Patent Publication Number: US-11654590-B2

Title: Control of a cutting tool

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a continuation of Ser. No. 17/024,588, filed Sep. 27, 2020, which is a continuation of U.S. application Ser. No. 16/670,441, filed Oct. 31, 2019, now U.S. Pat. No. 10,792,832, issued Oct. 6, 2020, which is a continuation of U.S. application Ser. No. 15/370,908, filed Dec. 6, 2016, now U.S. Pat. No. 10,471,618, issued Nov. 12, 2019, which claims priority to, and the benefit of, U.S. provisional patent application No. 62/264,622, filed Dec. 8, 2015, which is incorporated herein by reference in its entirety. 
    
    
     FIELD 
     The present disclosure relates generally to control of a cutting tool. 
     BACKGROUND 
     A cutting tool may include one or more movable blades that are actuatable by a hydraulic or electromechanical actuation system. By providing power to the actuation system, the blades move relative to each other to perform operations such as cutting, crimping, separation, blanking, etc. 
     SUMMARY 
     The present disclosure describes embodiments that relate to apparatuses and methods associated with control of a cutting tool. In a first example implementation, the present disclosure describes a cutting tool. The cutting tool includes a body; two blades coupled to the body; an actuator coupled to the body and configured to cause the two blades to move relative to each other; and a controller coupled to the body. The controller is in wireless communication with a remote device, and the controller is configured to perform operations. The operations include: (i) receiving a first signal from the remote device indicating a request to operate the cutting tool remotely; (ii) receiving information indicating that a trigger coupled to the body has been locked in an “on” state; (iii) sending a second signal to the remote device indicating that the trigger has been locked in the “on” state; and (iv) in response to receiving a third signal from the remote device, causing the actuator to move the two blades relative to each other to cut a cable placed therebetween. 
     In a second example implementation, the present disclosure describes a device configured to remotely control a cutting tool. The device includes a user interface comprising a plurality of user interface items; at least one processor; and date storage comprising instructions that, when executed by the at least one processor, cause the device to perform operations. The operations include: (i) receiving information indicative of actuation of a first user interface item of the plurality of interface items; (ii) responsively, sending a first signal to the cutting tool so as to request enabling the cutting tool to be operated remotely; (iii) receiving a second signal from the cutting tool indicating that the cutting tool is ready to perform a cutting operation; (iv) receiving information indicative of actuation of a second user interface item of the plurality of interface items; and (v) responsively, sending a third signal to the cutting tool so as to cause the cutting tool to perform the cutting operation. 
     In a third example implementation, the present disclosure describes a system. The system includes a cutting tool that includes a body, two blades coupled to the body, and an actuator coupled to the body and configured to cause the two blades to move relative to each other. The system also includes a device configured to remotely control the cutting tool. The device includes a user interface comprising a plurality of user interface items. In response to receiving information indicative of actuation of a first user interface item of the plurality of interface items, the device sends a first signal to the cutting tool so as to request enabling the cutting tool to be operated remotely. Also, in response to (i) receiving the first signal, and (ii) actuation of a trigger coupled to the cutting tool, the cutting tool sends a second signal to the device indicating that remote operation of the cutting tool has been enabled. Further, the cutting tool receives information indicating that the trigger has been locked in an “on” state, and responsively sends a third signal to the device indicating that the cutting tool is ready to perform a cutting operation. The device then receives information indicative of actuation of a second user interface item of the plurality of interface items, and responsively, sends a fourth signal to the cutting tool so as to cause the cutting tool to perform the cutting operation. 
     In a fourth example implementation, the present disclosure describes performing the following operations: (i) enabling a cutting tool to be operated remotely in response to receiving a first signal from a remote device, where the cutting tool includes a body, two blades coupled to the body, and an actuator coupled to the body and configured to cause the two blades to move relative to each other, and where the cutting tool is in wireless communication with the remote device; (ii) receiving information indicating that a trigger coupled to the body of the cutting tool has been locked in an “on” state; (iii) sending a second signal to the remote device indicating that the trigger has been locked in the “on” state; and (iv) in response to receiving a third signal from the remote device, causing the actuator to move the two blades relative to each other to cut a cable placed therebetween. 
     In a fifth example implementation, the present disclosure describes performing the following operations: (i) receiving information indicative of actuation of a first user interface item of a plurality of interface items of a device configured to remotely control a cutting tool; (ii) responsively, sending a first signal to the cutting tool so as to request enabling the cutting tool to be operated remotely; (iii) receiving a second signal from the cutting tool indicating that remote operation of the cutting tool has been enabled; (iv) receiving a third signal from the cutting tool indicating that the cutting tool is ready to perform a cutting operation; (v) receiving information indicative of actuation of a second user interface item of the plurality of interface items; and (vi) responsively, sending a fourth signal to the cutting tool so as to cause the cutting tool to perform the cutting operation. 
     In a sixth example implementation, the present disclosure describes a non-transitory computer readable medium having stored therein instructions that, when executed by a computing device, cause the computing device to perform operations in accordance with the fourth example implementation. In a seventh example implementation, the present disclosure describes a non-transitory computer readable medium having stored therein instructions that, when executed by a computing device, cause the computing device to perform operations in accordance with the fifth example implementation. Further additional example implementations are described as well that include any combination of the implementations. 
     The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the figures and the following detailed description. 
    
    
     
       BRIEF DESCRIPTION OF THE FIGURES 
         FIG.  1    illustrates a system, in accordance with an example implementation. 
         FIG.  2    illustrates a user interface of a device, in accordance with an example implementation. 
         FIG.  3    illustrates a simplified block diagram of a controller or a device, in accordance with an example implementation. 
         FIGS.  4 A,  4 B,  4 C,  4 D,  4 E,  4 F,  4 Q and  4 H  illustrate procedure for enabling remote-cut mode, in accordance with an example implementation. 
         FIGS.  5 A,  5 B,  5 C, and  5 D  illustrate procedure for arming a cutting tool, in accordance with an example implementation. 
         FIGS.  6 A,  6 B,  6 C,  6 D,  6 E,  6 F, and  6 G  illustrate procedure for performing a remote cutting operation, in accordance with an example implementation. 
         FIG.  7    illustrates exclusive one-to-one pairing between a cutting tool and a device, in accordance with an example implementation. 
         FIG.  8    illustrates a device communicating exclusively with a cutting tool, in accordance with an example implementation. 
         FIG.  9    illustrates a cutting tool communicating with a particular device while excluding other devices, in accordance with an example implementation. 
         FIG.  10    is a flow chart, in accordance with an example implementation. 
         FIG.  11    is another flow chart, in accordance with an example implementation. 
     
    
    
     DETAILED DESCRIPTION 
     The following detailed description describes various features and functions of the disclosed systems and methods with reference to the accompanying figures. The illustrative system and method embodiments described herein are not meant to be limiting. It may be readily understood that certain aspects of the disclosed systems and methods can be arranged and combined in a wide variety of different configurations, all of which are contemplated herein. 
     Further, unless context suggests otherwise, the features illustrated in each of the figures may be used in combination with one another. Thus, the figures should be generally viewed as component aspects of one or more overall implementations, with the understanding that not all illustrated features are necessary for each implementation. 
     Additionally, any enumeration of elements, blocks, or steps in this specification or the claims is for purposes of clarity. Thus, such enumeration should not be interpreted to require or imply that these elements, blocks, or steps adhere to a particular arrangement or are carried out in a particular order. 
     By the term “substantially” it is meant that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to skill in the art, may occur in amounts that do not preclude the effect the characteristic was intended to provide. 
     I. Overview 
     In examples, electrical equipment may be maintained while operating at high voltages. An example maintenance operation may involve cutting a live line. In this example, it is desirable to perform a cable cutting operation by way of a remotely controlled cutting tool so as to insulate workers from any electrical hazards. 
     In other examples, the line might not be easily reachable. For instance, the cable may be in an underwater environment, and may thus be cut via remote control of the cutting tool. Disclosed herein are systems, devices, and methods for remote control of a cutting tool to insulate workers from hazardous environments. 
     II. Example Systems 
       FIG.  1    illustrates a cutting tool system  100 , in accordance with an example implementation. The system  100  includes a cutting tool  102 , and a device  104  configured to remotely control the cutting tool  102 . The cutting tool  102  includes a body  106  and one or more blades  108 . The cutting tool  102  may also include a trigger  110 . In one preferred arrangement, the trigger  110  is physically onboard the cutting tool. The trigger  110  is capable of being actuated to as to initiate a cutting operation of the cutting tool  102 . 
     In examples, the cutting tool may be electromechanically actuated. For instance, the cutting tool  102  may include an electric motor configured to cause a spindle to rotate, thus causing an actuator coupled to the spindle to move linearly. The actuator may be coupled to at least one of the blades  108 , and may cause the blades  108  to move relative to each other to cut a cable disposed therebetween. The motor, spindle, and actuator may be coupled to the body  106 . 
     In another example, the cutting tool may be hydraulically actuated. For instance, a motor may be configured to drive a hydraulic pump, which pressurizes hydraulic fluid and provides the pressurized fluid to an actuator (e.g., a linear hydraulic cylinder). A piston of the actuator may be coupled to at least one of the blades  108  such that motion of the piston may cause the blades  108  to move relative to each other. Other actuation mechanisms are possible. 
     Also, in examples, the cutting tool  102  may be powered by a battery  112 . However, the cutting tool  102  may be coupled to an electric line that provides power to the cutting tool  102 . 
     In examples, the cutting tool  102  may include two blades  108 . In an example, motion of the actuator may cause both blades  108  to move relative to each other. In another example, the actuator may cause one blade to move, while the other blade remains stationary. In still another example, the cutting tool  102  may include only one blade  108  movable by the actuator. 
     Further, the cutting tool  102  may include a controller coupled to or embedded within the body  106 . The controller may be configured to operate the cutting tool  102 . For example, the controller may be in communication with sensors coupled to the cutting tool  102 . The controller may also be in communication with the trigger  110  and components of the actuation mechanism of the cutting tool  102 . For instance, if the trigger  110  is pulled, the controller may, in response cause power from the battery  112  to be provided to the actuation mechanism. The controller may further operate the actuation mechanism based on sensor inputs. Example sensor inputs include position sensor information indicating position of an actuator, pressure sensor information indicating hydraulic pressure in chambers of a hydraulic actuator, etc. 
     Additionally, the cutting tool  102  may include one or more antennae that facilitate sending and receiving messages to and from other devices, such as the device  104 . 
     The device  104  can be, for example, a mobile phone, personal digital assistant (PDA), laptop, notebook, or netbook computer, tablet computing device, etc. The device  104  may have a user interface to interact with operators/users. 
       FIG.  2    illustrates a user interface  200  of the device  104 , in accordance with an example implementation. The user interface  200  may include a plurality of user interface items. For instance, the user interface  200  may include user-selectable buttons  202 A,  202 B,  202 C,  202 D,  202 E, and  202 F. These buttons may be mechanically actuatable, or may be on-screen touch buttons. The user interface  200  may also include a display  204  configured to display messages and accept inputs from a user. The user interface  200  may also include indicators  206 A,  206 B, and  206 C. Each of these indicators may, for example, emit light of a particular color to indicate a particular status of the cutting tool  102  or the device  104 . These user interface items are examples for illustration only, and other user interface items and configurations are possible. 
       FIG.  3    is a simplified block diagram of a controller or a device, in accordance with an example implementation.  FIG.  3    shows some of the components that may be included in the device  104  or the controller of the cutting tool  102  to facilitate carrying out operations described herein. 
     As shown in  FIG.  3   , the device includes a communication interface  302 , a processing unit  304 , and non-transitory data storage  306 , all of which may be communicatively linked together by a system bus, network, or other connection mechanism  308 . Further, although these components are shown as discrete blocks in the figure, the components could be integrated together in various ways and/or distributed, replicated, or arranged in some other manner. 
     The communication interface  302  may operate to facilitate communication with various other entities. For instance, if the device  300  represents the device  104 , then the communication interface  302  facilitates transmitting signals/messages from the device  104  to the cutting tool  102  and receiving signals/messages from the cutting tool  102 . Similarly, if the device  300  represents the controller of the cutting tool  102 , then the communication interface  302  facilitates transmitting signals/messages from the controller to the device  104  and receiving signals/messages from the device  104 . 
     As such, the communication interface  302  may include one or more network communication interface modules, such as Ethernet network communication interface modules for instance, or may take any of a variety of other forms, supporting wireless and/or wired communication according to any of a variety of network communication protocols such as Bluetooth, Near Field Communication (NFC), etc. Further, the device  300  may include one or more antennae to facilitate communication with other devices. 
     Processing unit  304  may include one or more general purpose processors (such as microprocessors) and/or one or more special purpose processors (e.g., application specific integrated circuits). The data storage  306  may comprise one or more volatile and/or non-volatile storage components, such as optical, magnetic, or flash storage. As shown, the data storage  306  may hold program instructions  310  that are executable by processing unit  304  to carry out various operations described herein. 
     The cutting tool  102  may be configured to operate in at least two operating modes: a normal mode and a remote-cut mode. In the normal mode, an operator may place a cable between the blades  108  and pull the trigger  110  causing the actuator to move the blades  108  relative to each other and cut the cable. As long as the operator is pulling the trigger  110 , the actuation mechanism is powered, e.g., power is provided to the motor that controls motion of the actuator. But, as the operator releases the trigger  110 , power is disconnected from the actuation mechanism. Thus, this normal mode of operation may be safe if the cable is not energized as the operator stays close to the cutting tool  102 , possibly holding the cutting tool  102 , while the cutting operation is being performed. 
     In the remote-cut mode, however, the cutting tool  102  may be remotely controlled via the device  104 . The cutting tool  102  may be in wireless communication with the device  104 . Thus, the cutting tool  102  and the device the device  104  may exchanges signals and messages associated with performance of a cutting operation. Particularly, the device  104  may be used to remotely control the cutting tool  102  to perform a cutting operation while an operator is away from the cutting tool  102 . 
     A first step associated with the remote-cut mode may involve verifying that a user or operator wants to start a remote-cut operation.  FIGS.  4 A- 4 H  illustrate procedure for enabling remote-cut mode, in accordance with an example implementation. As shown in  FIG.  4 A , an operator may press the button  202 A of the device  104  to initiate enabling the remote-cut mode. In response, a processor of the device  104  may generate a display of a message, e.g., “Enable Remote Cut,” on the display  204  to alert the operator that the  202 A button has been pressed or selected. 
     To ensure that the button  202 A has been pressed intentionally, the device  104  may request a confirmation from the operator. As such, the device  104  may prompt the operator for a second enable criterion in addition to pressing the button  202 A. For instance, a display of a message, e.g., “Press ‘ 202 D’ to Activate Remote Cut,” may be generated on the display  204  as shown in  FIG.  4 B . The operator may then press the button  202 D to confirm that the operate intended to enable the remote-cut mode. Additionally, the device  104  may also determine an amount of time that elapsed between pressing the button  202 A and pressing the button  202 D. If the amount of time is less than a threshold period of time, e.g., 10 seconds, then the device  104  determines that the operator intends to initiate the remote-cut mode. If the period of time exceeds the threshold period of time, then the device  104  discards the previous pressing or selection of the button  202 A, and does not initiate enabling the remote-cut mode. 
     Assuming that the button  202 D was pressed within the threshold amount of time, the device  104  verifies the operator&#39;s intention to initiate the remote-cut mode. In response, the device  104  may then transmit or send a signal  400  to the cutting tool  102 , as shown in  FIG.  4 C , to command the controller of the cutting tool  102  to prepare for a remote-cut operation. 
     Further, as shown in  FIG.  4 D , the device  104  may request a third enable criterion from the operator. Particularly, a display of a message, e.g., “Confirm Remote Cut Pull Tool Trigger,” may be generated on the display  204  to prompt the operator to actuate or pull the trigger  110  as shown in  FIG.  4 E . If the operator pulls the trigger  110 , the controller of the cutting tool  102  may send a signal/message  402  to the device  104  to confirm that the trigger  110  has been pulled and that the cutting tool  102  is in the remote-cut mode, as shown in  FIG.  4 F . The exchange of signals between the cutting tool  102  and the device  104  further serves to verify that communication therebetween is established. 
     It should be noted that if the cutting tool  102  is in the normal mode of operation, pulling the trigger  110  may cause the actuator of the cutting tool  102  to be powered and the blades  108  to move relative to each other. However, because the cutting tool  102  had received the signal  400  from the device  104  that commands the cutting tool  102  to prepare for the remote-cut mode, pulling the trigger  110  in  FIG.  4 E  does not cause the actuator to be powered. If the signal  400  was not received correctly at the cutting tool  102  due to, for example, communication faults, pulling the trigger  110  might cause the actuator to be powered. This indicates to the operator that communication has not been established or that the procedure for enabling the remote-cut mode might not have been followed correctly. 
     In addition to sending the signal  402  to the device  104 , the cutting tool  102  may provide an indication to the operator that the cutting tool  102  is now in the remote-cut mode (e.g., the cutting tool  102  switched from a normal mode of operation to the remote-cut mode of operation). For instance, the cutting tool  102  may have a light emitting diode (LED) indicator  404  shown in  FIG.  4 G  The controller of the cutting tool  102  may cause the LED indicator  404  to flash or emit light intermittently at a particular frequency (e.g., 2 flashes/second) to notify the operator that the remote-cut mode is enabled. 
     In an example, the controller may further start a timer upon sending the message  402  to the device  104 . If a threshold period of time (e.g., 2 minutes) lapses from the start of the timer without receiving further communications from the device  104 , the controller may cause the cutting tool  102  to disable or exit the remote-cut mode and switch back to the normal mode of operation. 
     Upon receiving the signal  402  at the device  104 , a display of a message, e.g., “Remote Cut Enabled” as shown in  FIG.  4 H , may be generated on the display  204  to further confirm to the operator that the remote-cut mode is enabled. 
     Now that the remote-cut mode is enabled, the operator may next prepare the cut location at the cutting tool  102 . For instance, the operator may place a cable between the blades  108 . Flashing of the LED indicator  404  indicates to the operator that the cutting tool  102  is still in the remote-cut model. 
     A second step associated with the remote-cut mode may involve arming or readying the cutting tool  102  before the operator exits the cut location to avoid any hazards.  FIGS.  5 A- 5 D  illustrate procedure for arming the cutting tool  102 , in accordance with an example implementation. As shown in  FIG.  5 A , the cutting tool  102  may further include a trigger lock  500 . If the trigger  110  is pulled, and then the trigger lock  500  is actuated, e.g., pressed down, then the trigger  110  is locked in an “on” state. The “on” state of the trigger  110  could also be referred to as an “active” or “enabled” state. This process may require both hands of the operator: one hand to pull the trigger  110 , and a second hand to actuate the trigger lock  500 . This is a safety precaution as the operator cannot lock the trigger  110  in the “on” state accidently by one hand. 
       FIG.  5 B  illustrates a simplified electric circuit for the cutting tool  102 , in accordance with an example implementation. A switch  502  is controlled by a main control unit (MCU), i.e., the controller of the cutting tool  102 . As shown by the electric circuit, both the trigger  110  and the switch  502  need to be activated for a relay  504  to be energized, and thus deliver power to the actuator of the cutting tool  102 . 
     Thus, to operate the cutting tool  102  remotely, the trigger  110  has to stay in the “on” state, i.e., stayed pulled. In this manner, when the controller activates or turns on the switch  502 , power would be delivered to the actuator, thus causing the cutting tool  102  to perform a cutting operation. When the trigger lock  500  is pushed by the operator while the trigger  110  is pulled, the trigger lock  500  mechanically locks the trigger  110  in the “on” state. In this case, the cutting tool  102  is armed, such that when the controller turns on the switch  502 , power is delivered to the actuator of the cutting tool  102 . 
     In an example, the controller of the cutting tool  102  may start a timer when the trigger  110  is locked in the “on” state by the trigger lock  500 . If the trigger  110  or the trigger lock  500  remains depressed for a threshold period of time (e.g., 20 seconds), the controller confirms that the operator intends to arm the cutting tool  110 . The operator can disarm the cutting tool  110  with one hand by disengaging the trigger lock  500 . 
     When the controller confirms that the operator intends the cutting tool  102  to be armed, the controller sends a signal  506 , as shown in  FIG.  5 C , to the device  104  to inform the device  104  that the trigger  110  is held in the “on” state and the cutting tool  102  is armed. In response, a display of a message, e.g., “Tool Armed! Press Start to Begin Cut,” may be generated on the display  204 . Further, the device  104  may cause one of the indicators, such as the light indicator  206 B, as shown in  FIG.  5 D , to flash with a particular color (e.g., red) to further indicate to the operator that the cutting tool  102  is armed and ready to perform a cutting operation. 
     In an example, the controller of the cutting tool  102  may start a timer when the cutting tool  102  is armed. If controller does not receive an indication from the device  104  to start a cutting operation within a threshold period of time (e.g., 2 minutes), the controller may disarm the cutting tool  102 . The cutting tool  102  may then stay in the remote-cut mode and wait for a re-arming procedure, or the controller may cause the cutting too to revert back to the normal operating mode. 
     A third step associated with the remote-cut mode may involve starting the cutting operation. Now that the cutting tool  102  is armed and ready to perform the cutting operation, the operator exits or has already exited the cutting location to avoid any hazards. The operator can control the cutting tool remotely via the device  104 . 
       FIGS.  6 A- 6 G  illustrate procedure for performing a remote cutting operation, in accordance with an example implementation. To confirm that the operator intends to command the cutting tool  102  to cut a cable placed between the blades  108 , the operator may be required to press and hold one or more buttons for a particular period of time (e.g., 3 seconds). 
       FIG.  6 A  illustrates an operator pressing the buttons  202 B and  202 E to starting the cutting operation remotely. The buttons  202 B and  202 E are placed on the user interface  200  of the device  104  so as to ensure that the operator uses both hands to command starting the cutting operation, which further confirms the operator&#39;s intention. The buttons  202 B and  202 E may be pressed at substantially the same time (e.g., the operator may begin pressing the button  202 B and then within a threshold period of time, such as 100 milli seconds, begins pressing the other button  202 E). Requiring the operator to use both hands to send the cutting command further ensures that the operator&#39;s hands are away from the cutting tool  102  and thus further enhances operator safety. 
     If the device  104  confirms that the operator intends to start the cutting operation by pressing both buttons  202 B and  202 E substantially simultaneously for a particular period of time, the device  104  sends a signal  600 , as shown in  FIG.  6 B , to the cutting tool  102 . In response to receiving the signal  600 , the controller of the cutting tool  102  may turn on the switch  502  to start the cutting operation. A display of a message, e.g., “Remote Cut Starting—Cutting” may be generated on the display  204  of the device  104 , as shown in  FIG.  6 A , to show the operator that the cutting operation started or is about to start. 
     In some examples, the operator may desire to stop the cutting operation before completion. For instance, a tool failure may occur, the cable may be displaced while the operation is performed, or any other event might occur that would prompt the operator to stop the ongoing cutting operation. 
     As shown in  FIG.  6 C , the operator may press the button  202 C to indicate the operator&#39;s request to stop the cutting operation. In response, a display of a message, such as “Remote Cut Started—Stop Cut,” may be generated on the display  204  as shown in  FIG.  6 C , to indicate the operator&#39;s request. Further, the device  104  may send a signal  602 , as shown in  FIG.  6 D , to the cutting tool  102  commanding the controller of the cutting tool  102  to stop the cutting operation. All or a subset of the steps described above may have to be repeated to restart a remote cutting operation. 
     Additionally, the cutting tool  102  and the device  104  may provide the operator with a status of a cutting operation. The controller of the cutting tool  102  may receive information indicating that a cutting operation has been performed successfully. For instance, a hydraulic pressure within the cutting tool  102  may reach a threshold or target pressure value indicating that the actuator reached a limit of its travel stroke and thus the cut was successfully performed. As another example, the actuator may have a position sensor that might indicate to the controller that the actuator reached the end of its travel stroke. Other indicators are also possible. 
     On the other hand, the controller may also determine that a failure occurred during the cutting operation. For instance, the controller may determine or receive sensor information indicating that the actuator has stalled or that the battery  112  is overloaded, or any other event that might indicate fault with the cutting tool  102 . 
     Whether the cutting operation is successful or an error has occurred, the controller of the cutting tool  102  may send a signal  604 , as shown in  FIG.  6 E , to the device  104  to indicate the status of the cutting operation. When the device  104  receives the signal  604 , the device  104  may provide indications to the operator regarding the status of the cutting operation. For instance, if the cutting operation has been successful, a display of a message “Cut Complete!” may be generated on the display  204  as shown in  FIG.  6 F . Further, the light indicator  206 A may flash at a particular frequency with a green light to indicate success of the cutting operation. 
     On the other hand, if a fault has occurred and the cutting operation has been stopped, a display of a message “System Fault!” may be generated on the display  204 , as shown in  FIG.  6 G  Further, the light indicator  206 B may flash at a particular frequency with a red light to indicate system fault or failure of the cutting operation. 
     Upon completion of the cutting operation, the controller of the cutting tool  102  may cause the cutting tool  102  to switch back to the normal mode of operation. As mentioned above, in the normal mode of operation, if the operator pulls the trigger  110 , the actuator of the cutting tool  102  would be powered. 
     To enhance safety of the system described above, it is desirable to ensure exclusive one-to-one pairing between the device  104  and the cutting tool  102 . In other words, the cutting tool  102  may be configured to respond only to signals received from the device  104 , and thus not respond to signals from any other devices. Similarly, the device  104  may be configured to communicate exclusively with the cutting tool  102 . In this manner, unintended signals from other devices would not interfere with operation of the cutting tool  102  and the device  104 . 
       FIG.  7    illustrates exclusive one-to-one pairing between the cutting tool  102  and the device  104 , in accordance with an example implementation. As shown in  FIG.  7   , the cutting tool  102  has exclusive one-to-one pairing with the device  104  via a communication channel  700 . Similarly, a cutting tool  702  has exclusive one-to-one pairing with a device  704  via a communication channel  706 , and a cutting tool  708  has exclusive one-to-one pairing with a device  710  via a communication channel  712 . However, communication channels  714  and  716  are not available. As such, the cutting tool  102  cannot communicate with either the device  704  or  710 . Similarly, there are no communication channels between the device  104  and either of the cutting tools  702  or  708 . In this manner, no unintended communications or interference can occur between unpaired cutting tools and devices, and thus system&#39;s safety is enhanced. 
     In an example, to ensure exclusive one-to-one pairing between the cutting tool  102  and the device  104 , the cutting tool  102  may be assigned a unique identifier, such as a particular communication address. Further, the device  104  may have a memory (e.g., the data storage  306 ) coupled to processor(s), and configured to store the unique identifier of the cutting tool  102 . The device  104  may be configured to receive signals and communications in general only from a cutting tool having that stored unique identifier, i.e., the cutting tool  102 . An example unique identifier may in a communication address such as a media access control (MAC) address. 
       FIG.  8    illustrates the device  104  communicating exclusively with the cutting tool  102 , which has a particular MAC address, in accordance with an example implementation. As shown in  FIG.  8   , the cutting tool  102  has a MAC address of (00:07:80:33:DB:76), which is stored in a memory of the device  104 . Thus, the device  104  would exclusively receive and transmit communications to and from the cutting tool  102 . 
     Other cutting tools are assigned different MAC addresses. Particularly, a cutting tool  800  is assigned a MAC address (00:07:80:33:1B:65); cutting tool  802  is assigned a MAC address (00:07:80:23:AB:44); cutting tool  804  is assigned a MAC address (00:07:80:63:2B:34); cutting tool  806  is assigned a MAC address (00:07:80:33:FF:76); and cutting tool  808  is assigned a MAC address (00:07:80:33:BB:00). The device  104  would not accept any communications from the cutting tools  800 ,  802 ,  804 ,  806 , and  808  as their respective MAC addresses are not stored in the memory of the device  104 . 
       FIG.  9    illustrates the cutting tool  102  communicating with the device  104  while excluding other devices, in accordance with an example implementation. The cutting tool  102  also has the same MAC address (00:07:80:33:DB:76) stored in its memory, and would pair only with the device  104 , which is assigned the same MAC address. A device  900  is assigned a MAC address (01:27:80:33:44:26); device  902  is assigned a MAC address (00:07:80:33:FB:26); and device  904  is assigned a MAC address (00:07:80:33:DB:77). The cutting tool  102  would not accept any communications from the devices  900 ,  902 , and  908  as their respective MAC addresses are not are not stored in the memory of the cutting tool  102 . 
     III. Example Methods 
       FIG.  10    is a flow chart  1000 , in accordance with an example implementation. The flow chart  1000  may include one or more operations, or actions as illustrated by one or more of blocks  1002 - 1008 . Although the blocks are illustrated in a sequential order, these blocks may in some instances be performed in parallel, and/or in a different order than those described herein. Also, the various blocks may be combined into fewer blocks, divided into additional blocks, and/or removed based upon the desired implementation. 
     In addition, for the flow chart  1000  and other processes and operations disclosed herein, the flow chart shows operation of one possible implementation of present examples. In this regard, each block may represent a module, a segment, or a portion of program code, which includes one or more instructions executable by a processor or a controller for implementing specific logical operations or steps in the process. The program code may be stored on any type of computer readable medium or memory, for example, such as a storage device including a disk or hard drive. The computer readable medium may include a non-transitory computer readable medium or memory, for example, such as computer-readable media that stores data for short periods of time like register memory, processor cache and Random Access Memory (RAM). The computer readable medium may also include non-transitory media or memory, such as secondary or persistent long term storage, like read only memory (ROM), optical or magnetic disks, compact-disc read only memory (CD-ROM), for example. The computer readable media may also be any other volatile or non-volatile storage systems. The computer readable medium may be considered a computer readable storage medium, a tangible storage device, or other article of manufacture, for example. In addition, for the flow chart  1000  and other processes and operations disclosed herein, one or more blocks in  FIG.  10    may represent circuitry or digital logic that is arranged to perform the specific logical operations in the process. 
     The operations of the flow chart  1000  may be implemented by, for example, the controller of the cutting tool  102  as described above. 
     At block  1002 , the flow chart  1000  includes enabling a cutting tool to be operated remotely in response to receiving a first signal from a remote device. In line with the discussion above, a cutting tool (e.g., the cutting tool  102 ) includes a body, two blades coupled to the body, and an actuator coupled to the body and configured to cause the two blades to move relative to each other. The cutting tool is in wireless communication with a remote device (e.g., the device  104 ). For instance, the cutting tool, or a controller of the cutting tool, may be in communication via a wireless protocol such as Bluetooth with the remote device. 
     The cutting tool may be configured to operate in at least two operating modes: a normal mode and a remote-cut mode. In the normal mode, an operator may place a cable between the blades and pull a trigger causing the actuator to move the blades relative to each other and cut the cable. In the remote-cut mode, however, the cutting tool may be remotely controlled via the remote device. 
     The controller may enable the cutting tool to operate in the remote-cut mode in response to one or more signals from the device. For instance, an operator may press a button (e.g., the button  202 A) of a user interface of the device to initiate operating the cutting tool remotely. This first press may be considered by the device as a first enabling criterion. The device may request or wait for a second press on a second button (e.g., the button  202 D) within a threshold period of time from the first press to confirm that the operator intends to operate the cutting tool remotely. The second press is considered as a second enabling criterion. In response to both the first and second enabling criteria, the device may send a signal (e.g., the signal  400 ) to the cutting tool to inform the controller of the cutting tool to prepare for operating remotely. 
     To emphasize safety, the controller may not place the cutting tool in a remote-cut mode until the controller receives a third enabling criterion. For instance, the operator may be requested to press on a trigger (e.g., the trigger  110 ) coupled to the cutting tool to confirm the operator&#39;s intention to operate the cutting tool remotely. Once the controller receives an indication of this third enabling criterion, the controller enables the cutting tool to operate in a remote-cut mode. The controller may further send a signal (e.g., the signal  402 ) to inform the device that the cutting tool is now operating in a remote-cut mode. 
     The cutting tool may further have a light indicator. The controller may cause the light indicator to flash at a particular frequency to alert the operator that the cutting tool is now operating in a remote-cut mode. 
     At block  1004 , the flow chart  1000  includes receiving information indicating that a trigger coupled to the body of the cutting tool has been locked in an “on” state. After enabling the cutting tool to be operated remotely, the next step is to arm or ready the cutting tool to perform a cutting operation. As an example, the operator may lock the trigger in an “on” state to arm the cutting tool. For instance, the cutting tool may have a trigger locking mechanism (e.g., the trigger lock  500 ) that enables locking the trigger in the “on” state. 
     At block  1006 , the flow chart  1000  includes sending a second signal to the remote device indicating that the trigger has been locked in the “on” state. The controller may receive an indication that the trigger is locked in the “on” state, and in response send a signal (the signal  506 ) to the remote device to inform it that the trigger has been locked in the “on” state. This signal further informs the remote device that the cutting tool is armed and ready to perform the cutting operation. 
     At block  1008 , the flow chart  1000  includes, in response to receiving a third signal from the remote device, causing the actuator to move the two blades relative to each other to cut a cable placed therebetween. The operator may press one or more buttons (e.g., the buttons  202 B and  202 E) to starting the cutting operation. Responsively, the device sends a signal (e.g., the signal  600 ) to the cutting tool. When the controller of the cutting tool receives an indication of this signal. The controller commands the cutting tool to start the cutting operation. For instance, the controller provides power to an actuation mechanism that drives the actuator and causes the blades to move relative to each other and cut a cable placed therebetween. 
     Further, if the operator desires to stop the cutting operation for any reason, the operator may press a button (e.g., the button  202 C) and the device may send another signal (e.g., the signal  602 ) to the cutting tool. The controller stops the cutting tool in response to receiving such signal. The controller may also send one or more signals during the cutting operation to inform the device, and thus the operator, about the status of the cutting operation, e.g., whether the cutting operation is successful or a fault has occurred. 
       FIG.  11    is another flow chart  1100 , in accordance with an example implementation. The flow chart  1100  may include one or more operations, or actions as illustrated by one or more of blocks  1102 - 1112 . Although the blocks are illustrated in a sequential order, these blocks may in some instances be performed in parallel, and/or in a different order than those described herein. Also, the various blocks may be combined into fewer blocks, divided into additional blocks, and/or removed based upon the desired implementation. 
     In addition, for the flow chart  1100  and other processes and operations disclosed herein, the flow chart shows operation of one possible implementation of present examples. In this regard, each block may represent a module, a segment, or a portion of program code, which includes one or more instructions executable by a processor or a controller for implementing specific logical operations or steps in the process. The program code may be stored on any type of computer readable medium or memory, for example, such as a storage device including a disk or hard drive. The computer readable medium may include a non-transitory computer readable medium or memory, for example, such as computer-readable media that stores data for short periods of time like register memory, processor cache and Random Access Memory (RAM). The computer readable medium may also include non-transitory media or memory, such as secondary or persistent long term storage, like read only memory (ROM), optical or magnetic disks, compact-disc read only memory (CD-ROM), for example. The computer readable media may also be any other volatile or non-volatile storage systems. The computer readable medium may be considered a computer readable storage medium, a tangible storage device, or other article of manufacture, for example. In addition, for the flow chart  1100  and other processes and operations disclosed herein, one or more blocks in  FIG.  11    may represent circuitry or digital logic that is arranged to perform the specific logical operations in the process. 
     The operations of the flow chart  1100  may be implemented by, for example, the device  104  (or a processing unit of the device  104 ) as described above. 
     At block  1102 , the flow chart  1100  includes receiving information indicative of actuation of a first user interface item of a plurality of interface items of a device configured to remotely control a cutting tool. A device such as the device  104  may have an interface (e.g., the user interface  200 ) having buttons, indicators, and a display. An operator may press one or more buttons (e.g., the buttons  202 A and  202 D) to activate a remote-cut mode of a cutting tool (e.g., the cutting tool  102 ). The processing unit of the device may then receive an indication that the operator pressed the buttons. 
     At block  1104 , the flow chart  1100  includes responsively, sending a first signal to the cutting tool so as to request enabling the cutting tool to be operated remotely. In response to receiving the information indicating that the operator pressed the button(s), the device may then send a signal (e.g., the signal  400 ) to the cutting tool requesting that the cutting tool be enabled to be operated remotely. 
     At block  1106 , the flow chart  1100  includes receiving a second signal from the cutting tool indicating that remote operation of the cutting tool has been enabled. After a controller of the cutting tool receives the first signal, the controller may further receive another indication or confirmation that the operator desires to operate the cutting tool in the remote-cut mode. The confirmation may include, for example, the operator pulling a trigger of the cutting tool. The controller then sends a second signal (e.g., the signal  402 ) to the device to confirm that the remote-cut mode has been enabled for the cutting tool. The processing unit of the device may generate a display of a message on a display of the device that the remote-cut mode is enabled. 
     At block  1108 , the flow chart  1100  includes receiving a third signal from the cutting tool indicating that the cutting tool is ready to perform a cutting operation. After enabling the remote-cut model, the operator may arm or ready the cutting tool for a cutting operation. For instance, the operator may lock a trigger of the cutting tool in an “on” state. Then, the controller may send a signal (e.g., the signal  506 ) to inform the device that the cutting tool is armed and ready to perform the cutting operation. The processing unit of the device may generate a display of a message on a display of the device that the cutting tool is armed. 
     At block  1110 , the flow chart  1100  includes receiving information indicative of actuation of a second user interface item of the plurality of interface items. Once the operator sees a message or is informed that the cutting tool is armed, the operator may select or actuate a user interface item (press the buttons  202 B and  202 E) to command starting the cutting operation. The processing unit of the device receives an indication that the operator selected the user interface item. 
     At block  1112 , the flow chart  1100  includes, responsively, sending a fourth signal to the cutting tool so as to cause the cutting tool to perform the cutting operation. In response to receiving an indication that the operator commanded starting the cutting operation, the device sends a signal (e.g., the signal  600 ) commanding the cutting tool to starting the cutting operation. The device may thereafter receive signals from the cutting tool  102  regarding status of the cutting operation, i.e., whether the cutting operation is successful or a fault has occurred. 
     IV. Conclusion 
     It should be understood that arrangements described herein are for purposes of example only. As such, those skilled in the art will appreciate that other arrangements and other elements (e.g., machines, interfaces, orders, and groupings of operations, etc.) can be used instead, and some elements may be omitted altogether according to the desired results. 
     While various aspects and implementations have been disclosed herein, other aspects and implementations will be apparent to those skilled in the art. The various aspects and implementations disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope being indicated by the following claims, along with the full scope of equivalents to which such claims are entitled. It is also to be understood that the terminology used herein is for the purpose of describing particular implementations only, and is not intended to be limiting.