Patent Publication Number: US-11029134-B2

Title: Target carrier system having advanced functionality

Description:
TECHNICAL FIELD 
     The present invention relates generally to the field of firearm shooting ranges, and more particularly to a system for detecting strikes or hits to a target and/or a target carrier and for providing remote information responsive to the strikes. 
     BACKGROUND 
     In range shooting, it is important to provide multiple different scenarios to train a shooter (often a soldier or law enforcement officer) to react properly in a number of different situations—thereby protecting both the trainee and the public at large. Target equipment, such as target retrievers, are installed on the ranges to give versatility in training and ease in placing and returning a target. Target retrievers and the like are typically expensive to install and maintain. An inaccurate shooter can cause a retriever to be out of sync with other retrievers and can even do significant damage to a target retriever that may be costly to repair. Further, servicing a target system can typically only be done after closing or when the rest of the range is shut down, due to the danger of entering a range while shooters are active. Thus, it is beneficial if the target equipment and system requires very little servicing. 
     It can also be difficult to determine which shooter hit the equipment. Even the actual shooter may not know that they hit the target retriever, etc. One current method for detecting whether a target retriever has been hit is for a range worker to spray paint the target retriever prior to each use, and then manually inspect the target retriever after each shooter to determine if any spray paint has been removed by a bullet hit. This can be time consuming and difficult. Additionally, this method does not determine if the hit came from the shooter in the lane of the specific target retriever, or if it came from a shooter on another lane. Accordingly, there is a need to provide an improved method of detecting whether a target carrier has been hit. There is also a need to protect the target carrier from further damage if multiple hits are sustained. It is also beneficial if target systems are programmable to automatically protect the target carrier. 
     It may also be difficult for a shooter to determine if, during the shooting scenario, they have correctly hit the target which was presented. For example, if the target is downrange several yards, it may be difficult for the shooter to have a visual indication of where, or even if, the shooter hit the target. Thus, there is a need to provide a shooter with a real-time visual indication of a target. 
     SUMMARY OF INVENTION 
     The present invention relates to systems and methods for detecting strikes to a target carrier and taking protective measures in response to such strikes. In one embodiment, the system comprises a target carrier, the target carrier having a sensor disposed thereon. The sensor may be in communication with a controller, and the controller may be in control of and/or in communication with the necessary equipment on the carrier to effectuate a response or corrective measure when the sensor detects a strike to the target carrier. 
     The present invention also relates to a camera system onboard a target carrier. According to one aspect, the camera may be mounted to the target carrier behind a bullet proof steel plate. A piece of rubber or other impact-absorbing material may be placed between the camera and the steel plate to absorb impacts and dampen vibrational energy. According to another configuration, the camera may be provided with a bulletproof case. 
     In another configuration, the camera may be directed at an angle to view a target carried by the target carrier. The camera may be in communication with a controller to transmit the image of the target in real time to a screen located near the shooter and/or located in a control room. In some configurations, the camera image may be provided with keystone correction. According to another aspect, the camera may be provided with a tilt-shift lens. 
     According to one configuration, the controller may be in communication with a target carrier motor such that the target carrier may be sent to a “home” position in response to a strike signal received at the controller from the sensor. According to another configuration, the controller may be in communication with a target actuator such that the target may be turned  90  degrees (or placed on edge with respect to a shooter) in response to a strike signal received at the controller from the sensor. 
     According to another aspect, the sensor may be in communication with a range server such that a range operator is alerted when the sensor detects a strike to the target carrier. 
     According to another aspect, the system may further comprise a shooter interface that alerts the shooter when the sensor detects a strike to the target carrier. 
     According to another aspect, the system may comprise a range controller interface which may allow a range operator to select default settings for corrective actions to be taken when a predetermined threshold of strike signals are generated by the sensor, and/or select custom settings for an individual shooter. 
     According to another aspect, the system may be implemented on a single target carrier without connection to a range server and/or range network. The controller of the target carrier may implement corrective measures in response to a strike signal received from the sensor. 
     According to yet another aspect, any suitable sensor may be used. In some configurations, more than one sensor and/or more than one type of sensor may be used. For example, the sensor(s) may comprise one or more of an accelerometer, a piezo electric sensor, a microphone, a thermocouple, and a strain gauge sensor. 
     A method is also described herein to sense hits to a target carrier, and take corrective measures after a predetermined number of hits are detected. Such corrective measures may include actuating a carrier motor to move the carrier to a home position, edging or otherwise altering the position of a target held by the carrier, changing the lighting on the lane of the carrier, sending a signal to the shooter&#39;s user interface, and/or sending a signal to the range operator. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       The following drawings illustrate what are currently considered to be specific representative configurations for carrying out the invention and are not limiting as to embodiments which may be made in accordance with the present invention. The components in the drawings are not necessarily to scale relative to each other. Like reference numerals designate corresponding parts throughout the several views. 
       The drawings are illustrative and not limiting of the scope of the invention which is defined by the appended claims. The various elements of the invention accomplish various aspects and objects of the invention. Not every element of the invention can be clearly displayed in a single drawing, and as such not every drawing shows each element of the invention. 
       It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present subject matter. Similarly, it will be appreciated that any flow charts, flow diagrams, state transition diagrams, pseudo code, and the like represent various processes which may be substantially represented in computer readable medium and so executed by a computer or processor, whether or not such computer or processor is explicitly shown. 
         FIG. 1  illustrates a block diagram of exemplary implementation of carrier strike sensor, implemented in a shooting range network, according to an embodiment of the present disclosure; 
         FIG. 2  illustrates a side schematic view of a target carrier having a strike sensor when a target is in a first, presented position; 
         FIG. 3  illustrates the side schematic view of a target carrier having a strike sensor of  FIG. 2  when a target is in a second, non-presented position in response to one or more strikes to the target carrier; 
         FIG. 4  is a flowchart illustrating a method of detecting strikes to a target carrier, according to one exemplary embodiment; 
         FIG. 5  is a flowchart illustrating a method of detecting strikes to a target carrier, according to one exemplary embodiment; 
         FIG. 6  is a flowchart illustrating a method of detecting strikes to a target carrier, according to one exemplary embodiment; 
         FIG. 7  is a table illustrating exemplary corrective measures which may be taken based on the number of strikes detected to the target carrier, according to one example configuration; 
         FIG. 8  is a block diagram of an exemplary implementation of a target carrier having a camera onboard; 
         FIG. 9  is a schematic view of a target carrier having an onboard camera; 
         FIG. 10  is a perspective view of a target carrier and docking station; and 
         FIG. 11  is a bottom view of the target carrier and docking station of  FIG. 10 , and  FIG. 12  shows a kit for allowing a target carrier to detect and react to being struck. 
       The following provides a detailed description of particular embodiments of the present invention. Reference will now be made to the drawings in which the various elements of the illustrated configurations will be given numerical designations and in which the invention will be discussed so as to enable one skilled in the art to make and use the invention. It is to be understood that the following description is only exemplary of the principles of the present invention, and should not be viewed as narrowing the scope of the claims which follow, which claims define the full scope of the invention. 
     
    
    
     It will be appreciated that various aspects discussed in one drawing may be present and/or used in conjunction with the embodiment shown in another drawing, and each element shown in multiple drawings may be discussed only once. For example, in some cases, detailed description of well-known items or repeated description of substantially the same configurations may be omitted. The reason is to facilitate the understanding of those skilled in the art by avoiding the following description from being unnecessarily redundant. The accompanying drawings and the following description are provided in order for those skilled in the art to fully understand the present disclosure, and these are not intended to limit the gist disclosed in the scope of claims. 
     For a firmware, and/or software implementation of the target carrier strike detection system described herein, the methodologies can be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. Any machine readable medium tangibly embodying instructions can be used in implementing the methodologies described herein. For example, software codes and programs can be stored in a memory and executed by a processing unit. Memory can be implemented within the processing unit or may be external to the processing unit. As used herein the term “memory” refers to any type of long term, short term, volatile, nonvolatile, or other storage devices and is not to be limited to any particular type of memory or number of memories, or type of media upon which memory is stored. 
     In another firmware and/or software implementation, the functions may be stored as one or more instructions or code on a non-transitory computer-readable medium. Examples include computer-readable media encoded with a data structure and computer- readable media encoded with a computer program. Computer-readable media may take the form of an article of manufacturer. Computer-readable media includes physical computer storage media. A storage medium may be any available medium that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, flash memory, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media. 
     In addition to storage on computer readable medium, instructions and/or data may be provided as signals on transmission media included in a communication apparatus. For example, a communication apparatus may include a transceiver having signals indicative of instructions and data. The instructions and data are configured to cause one or more processors to implement the functions outlined in the claims. That is, the communication apparatus includes transmission media with signals indicative of information to perform disclosed functions. At a first time, the transmission media included in the communication apparatus may include a first portion of the information to perform the disclosed functions, while at a second time the transmission media included in the communication apparatus may include a second portion of the information to perform the disclosed functions. 
     It should be noted that the description merely illustrates the principles of the present subject matter. It will thus be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described herein, embody the principles of the present subject matter and are included within its spirit and scope. Furthermore, all examples recited herein are principally intended expressly to be only for pedagogical purposes to aid the reader in understanding the principles of the invention and the concepts contributed by the inventor(s) to furthering the art, and are to be construed as being without limitation to such specifically recited examples and conditions. Moreover, all statements herein reciting principles, aspects, and embodiments of the invention, as well as specific examples thereof, are intended to encompass equivalents thereof. 
     The present disclosure generally relates to a system including a carrier having one or more sensors that allow a hit or strike to the carrier to be detected. The system may automatically indicate if a hit has occurred and take further action (such as edging the target and/or returning the carrier to the home position). As used herein, the term “carrier” is used to refer to any type of target carrier, such as a target retriever, runner, or the like. 
     The following provides a detailed description of a single target carrier provided with one or more hit detection sensors. It is understood, however, that two or more carriers may be used together to provide a plurality of carriers with hit detection to be used on a shooting range with multiple lanes. Typically, one target carrier will be provided for each lane of a shooting range. 
     The functions of the various elements shown in the figures, including any functional blocks labeled as “controller(s),” may be provided through the use of dedicated hardware as well as hardware capable of executing software in association with appropriate software. When provided by a controller, the functions may be provided by a single dedicated controller, by a single shared controller, or by a plurality of individual controllers, some of which may be shared. Moreover, explicit use of the term “controller” should not be construed to refer exclusively to hardware capable of executing software, and may implicitly include, without limitation, digital signal processor (DSP) hardware, network processor, application specific integrated circuit (ASIC), field programmable gate array (FPGA), read only memory (ROM) for storing software, random access memory (RAM), non-volatile storage. Other hardware, conventional and/or custom, may also be included. 
     One particular embodiment of the present disclosure is shown and described in  FIG. 1 .  FIG. 1  shows a block diagram of some components of one type of system (generally indicated at  10 ) to detect hits to a target carrier  20 . The system  10  may generally comprise a target carrier  20 , the target carrier having a sensor  25  disposed thereon. The sensor  25  may be in communication with a controller  30 , and the controller  30  may be in control of and/or in communication with the necessary equipment on the carrier  20  (such as a target carrier motor  32  and/or a target actuator  35 ) to effectuate a response or corrective measure when the sensor  25  detects a strike to the target carrier  20 . 
     In the implementation shown in  FIG. 1 , the system  10  includes one or more controller(s)  30 . The controller  30  may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuitries, and/or any devices that manipulate signals based on operational instructions. Among other capabilities, the controller(s) is configured to fetch and execute computer-readable instructions stored in the memory. Such instructions may include, for example, instructions to move the target carrier  20  via the motor  32  to a home position after one or more strikes to the target carrier  20  are sensed by the sensor  25 , and/or move the target actuator  35  to turn target  38 , for example, from a presented position to a non-presented position. 
     The sensor  25  may be any suitable sensor known in the art to detect hits directly to the target carrier  20 . The sensor  25  may be able to distinguish between motion of the target carrier  20  due to a bullet strike to the target carrier  20  and motion due to other forces (such as motion which may be caused by motor  32  moving the target carrier  20  over a track, motion caused by movement of target actuator  35  and/or motion caused by hits to target  38 ). This distinguishing can be accomplished, for example, by calibration/tuning of the sensor  25 . The carrier  20  may also be equipped with additional sensor(s) at multiple locations to distinguish the cause of motion of the target carrier  20 . In one configuration, the sensor  25  is located behind a front plate of the target carrier  20 . In another configuration, the sensor  25  is located on the main printed circuit board of the controller  30 . Placement of the sensor(s)  25  may depend on the type of sensor(s) used. Suitable sensors include accelerometers, piezo electric sensors, microphones, thermocouples, strain gauge sensors, etc. Any suitable sensor known in the art may be used. 
     The sensor  25  may be in communication with the controller (for example, as stated above, the sensor  25  may be attached to the main printed circuit board of the controller) either directly or indirectly, and may send a strike signal to the controller when the sensor  25  detects a hit to the target carrier  20 . The controller may effect a change to the target  38  in response to the strike signal (or in response to a predetermined threshold of strike signals) received from the sensor  25 . As will be discussed in additional detail below, the predetermined threshold may be based on the number of strike signals indicated (i.e. a threshold zero, on, etc., where exceeding the threshold causes the controller to affect a corrective measure). Alternatively, the predetermined threshold may be based on cumulative force sensed. Thus, for example, the target carrier could be hit by several small caliber, low impact rounds (i.e. .22 long rifle) or a glancing blow without surpassing the threshold, while a single direct hit from a .45 bullet or a 30-06 may exceed the predetermined threshold and cause corrective measures to be taken. 
     The controller may also send a signal to a range server  40  over a network  50  to alert range operators that a target carrier  20  has been hit. The signal sent from the target carrier controller  30  to the range server may include information, for example, the lane number of the carrier, the number of strikes the carrier has received during a particular shooter&#39;s session, the shooting scenario selected by the particular shooter, the type of weapon being used, information relating to the particular shooter, etc. 
     The network  50  connecting the target carrier controller  30 , range server  40 , and interfaces  42 ,  48  may be a wireless or a wired network, or a combination thereof. Depending on the technology, the network  50  includes various network entities, such as gateways, routers, etc.; however, such details have been omitted for ease of understanding. 
     The range server  40  may have one or more controller(s)  45 . Like the controller  30  of the target carrier  20 , the range server controller(s)  45  may be implemented as one or more microprocessors, microcomputers, microcontrollers, digital signal processors, central processing units, state machines, logic circuitries, and/or any devices that manipulate signals based on operational instructions. Among other capabilities, the range server controller(s)  45  may be configured to fetch and execute computer-readable instructions stored in the memory. Such instructions may include, for example, instructions to send a signal to a target carrier controller  30  to move the target carrier  20  to a home position after one or more strike signals are received at the range server  40 , and/or send a signal to a target carrier controller  30  to move a target  38  to present the edge to the shooter so that the target face is no longer visible after one or more strikes signals are received at the range server  40 . It will be appreciated that instructions to send the target carrier  20  to a home position and/or edge the target  38  could be affected either by the controller  30  in the target carrier  20 , or by a signal from the range server  40  to the controller  30  in the target carrier  20 . 
     The range server  40  may also comprise a corrective measures module  47  in communication with the controller  45 . The corrective measures module  47  may allow range operators to set default corrective measures and/or set unique corrective measures for a particular user. 
     As explained above, the target carrier  20 , may receive a hit as detected by one or more sensors  25  that results in a corrective measure being taken to address a detected strike to the target carrier  20 . This may be a user-selectable option by the range operator(s), and may be modified based on user selectable options. Selection of such options may be provided to the range operator(s) via a menu or other graphical user interface  48  to modify and/or program the corrective measures module  47 . For example, the range operator(s) may select to allow only one strike to a carrier before a corrective measure is taken, such as placing the target on edge. Alternatively, the range operator(s) may select to allow multiple hits or may select to turn off the option to automatically take corrective measure when the target carrier is hit. Other options include sending a warning to the shooter interface  42  when the target carrier  20  is hit. A default may be set, for example, to take corrective measures after two strikes are detected. Subsequent unique settings for an individual shooter may be changed from the default by the range operator(s). In use the sensors may be configured to estimate the location of the shooter who impacted the target. In some scenarios, the shooter hitting the target carrier  20  may be the shooter in the lane in which the target carrier is operating. One or more strikes may indicate that the shooter is shooting carelessly and is likely to damage or cause excessive wear to the target carrier. Thus, the shooter interface  42  may display a message to the shooter that he or she has struck the target carrier too many times and that the shooter&#39;s session had ended. The sensors  25 , however, may detect that the impact is coming from a bullet traveling at an angle to the target carrier  20  inconsistent with being fired in the same lane. By determining the location of the target carrier and the direction at which the force impacts the target carrier  20 , the system can determine which shooter is likely responsible. For example, the seniors  25  on the target carrier  20  in lane  3  may detect an impact which, when considering the location of the target carrier and the direction of force indicates that the bullet hitting the target carrier actually came from the shooter in lane  1 . The shooter interface on claim  1  may then flash a warning to the shooter in that lane that the session with be terminated if the shooter is responsible for another strike to one of the target carriers. Additionally, the same sensors  25  can detect the force of the hit so that the controllers  30 / 45  may determine whether it is advisable to turn off the target carrier, or simply mark the target carrier for inspection at the end of the day. 
     According to an implementation of the present disclosure, each of the carriers  20  may be connected to one system  10 . However, in another implementation, each of the carriers  20  may include an individual system  10  capable of controlling the target actuator and/or motor of the carrier, etc. associated with that carrier. 
     Turning now to  FIG. 2 , there is shown a schematic side view of an alternate system  10 ′ as it may appear during a shooting scenario for a shooter in a particular lane at a shooting range. In this system  10 ′, there is no communication to a range server, but rather all the instructions and protection for the target carrier  20  may reside on the controller  30  of the target carrier  20 . Target carrier  20  is shown in dashed lines in  FIG. 2  so that interior structures, such as sensor  25 , controller  30 , and actuator  35  may be seen.  FIG. 2  shows a schematic side view of how the system  10 ′ may look as a shooter is actively engaged in a shooting scenario. The shooter may select their scenario, for example, by using a shooter interface  42  (shooter interface  42  not shown in  FIG. 2  for clarity, but may be similar to the shooter interface shown in  FIG. 1 ) which may allow selection from a variety of shooting scenarios. Thus, for example, the shooter interface may be a touch screen located in the shooting stall and visible to the shooter. The screen may receive instructions from the shooter and may provide information to the shooter, including whether or not the target carrier has been hit. The target carrier  20  may then move along a track  52  according to the shooting scenario and present a target  38  to the shooter. 
     As the shooter proceeds, if the target carrier  20  is struck by a bullet, the processor may receive a signal from the sensor  25  that a strike has occurred. In some configurations, a single strike may cause the controller  30  to take corrective measures, such as by sending the target to the “home” position as shown in  FIG. 3 . In  FIG. 3 , the target has moved to the very end of the track  52  and has been placed on edge relative to the shooter. In other configurations, the controller  30  is programmed to allow a predetermined number of strikes to occur before the target is sent to a home position and the shooting scenario is ended. 
     As seen in  FIG. 3 , the controller  30  received the predetermined number of strikes and actuated the target motor  32  to move the target carrier  20  rearwardly away from the shooter (it will be appreciated that in other configurations the controller  30  may also move the target carrier  20  forwardly until it reaches the docking station  58 ). In  FIG. 3 , the controller  30  has also actuated the target actuator  35  to turn the target  38  from its presented position ( FIG. 2 ) to an edged position in which the target is turned about 90 degrees so the edge is facing the shooter. In this position, the target is not presented to the shooter, clearly indicating that the shooting scenario is over. The shooter may be advised that the shooting session is over because he or she struck the target carrier more times than was permitted and may be required to take lessons, pay a fine, attend a training, etc., before being allowed to use the target retrieval system again. 
     Turning now to  FIG. 4 , there is shown an exemplary method (generally indicated at  100 ) for detecting of a strike to a target carrier and subsequent correction actions which may be taken. The order in which the method  100  is described is not intended to be construed as a limitation, and any number of the described method blocks can be combined in any order to implement the method  100 , or alternative methods. Additionally, individual blocks may be deleted from the methods without departing from the spirit and scope of the subject matter described herein. Furthermore, the method  100  can be implemented in any suitable hardware, software, firmware, or combination thereof. 
     After a start  105 , the system may move the target carrier to a first, presented position  110  or through a training scenario, etc. The sensor  25  may check for strikes to the target carrier  115 . The sensor may perform this check nearly continuously, such as every 0.01 seconds, or as often as desired. It will be appreciated that the logic of the sensor may be programmed to perform this check as often as desired. The sensor then determines if it has detected a hit to the target carrier ( 120 ). Where no hit is detected, the sensor may loop to  115  and check again to detect a strike to the target carrier. The loop of checking for strikes and determining if a strike is detected ( 115 ,  120 ) may repeat continuously until the sensor detects a hit to the target carrier. Alternatively, controllers could be passive and only respond to a signal generated by the sensors when impacted by a bullet. 
     When the sensor detects a hit to the target carrier, the sensor may then send a strike signal from the sensor to the controller ( 125 ). The number of strikes signals may be incremented by one ( 130 ). The controller may determine if the number of strike signals is less than the predetermined maximum ( 135 ). As stated above, the system may have a default setting that allows, for example, three strike signals before corrective measures are taken. Or, a custom setting may be selected (for example, at the range server a custom setting may be selected for a particular shooter). When the number of strike signals is less than the maximum, the system may return to the loop  115 ,  120 . When the number of strike signals is equal to or greater than the maximum, corrective measures may be taken ( 140 ). 
     The sensors  25  may also be able to detect the magnitude of the strike and use the magnitude of the impact in the calculation as well. For example, a 30-06 bullet will impact the target carrier with far greater force than will a .22 bullet at the same distance due both to the mass of the bullet and the velocity at which it travels for most common rounds. A target carrier we may be hit by 10 rounds fired from a .22 without concern, while a single impact from a 30-06 or more powerful round may suggest deactivating the target carrier until it can be inspected. 
     Exemplary corrective measures may be sending the target carrier  20  to a home position (such as at either the near end or far end of a track), placing the target  38  on edge so it is no longer presented, sending a signal to the range server  40 , sending a message to the shooter interface  42 , etc. It will be appreciated that the system may be programmed to have one or more default corrective measures happen at the same time or in a particular order, and/or the system may be programmable by a person in charge of the range to customize the corrective measures for a particular shooter. 
     Turning now to  FIG. 5 , there is shown a method  100 ′ wherein the controller  30  sends a warning message to the shooter interface ( 145 ) for each strike received that is less than the maximum allowed. This step may be taken immediately after step  120 , or at any other point after  120 . The warning message sent to the user interface may comprise one or more of an audible sound, a visual warning on the user interface, and/or other visual indications (such as a change in the lighting on the lane of the shooter). While shown in FIG. as being based on the number of strikes  130  which impact the target, the corrective measures  140  could also be based on a cumulative impact force or exceeding a predetermined threshold of force. Thus, for example, the corrective measures could be applied only when an impact significant enough to cause damage has been received, or when the accumulated force of the impacts suggest that the target carrier should be inspected. It will be appreciated that the threshold, etc., at which corrective action may be taken will likely be tied to the durability of the target carrier. 
     Similarly,  FIG. 6  shows an alternate method  100 ″ wherein a warning message is sent to the range server ( 150 ) for each strike received that is less than the maximum allowed. It will be appreciated that the steps shown in  FIGS. 4-6  could be done simultaneously—with both the shooter and the range server receiving warnings prior to shut down of the target receiver. 
       FIG. 7  shows a table  160  illustrating various corrective measures which may be taken after each subsequent strike to the target carrier  20  is detected, according to one configuration wherein three strikes to the target carrier is the maximum number of strikes permitted. For example, after one hit is detected  165   a , the corrective measure may be to display a warning message on a shooter&#39;s graphical user interface, and also send a signal to the range server to alert a range operator of the strike  168   a . After a second hit is detected ( 165   b ), the warning message may again be displayed on the shooter&#39;s graphical user interface, and the signal sent to the range server to alert a range operator of the strike, and additionally flashing the lights on the shooter&#39;s lane  168   b . After a third hit is detected  165   c , the system may turn the shooter&#39;s target on edge, send the target carrier to a home position, and send a signal to the range server alerting the range operator that the maximum number of strikes has been reached and the shooter&#39;s lane has been shut down. As with  FIGS. 4 and 5 , the method could also be conducted using a threshold of force received by rounds hitting the target carrier, with the various corrective measures occurring each time a predetermined threshold is passed. 
     Various embodiments described also can be practiced without some of the specific details described herein, or with other specific details, such as changes with respect to the ordering of the code flow shown in the figures, different code flows, and the like. Thus, the scope of the techniques and/or functions described are not limited by the particular order, selection, or decomposition of steps described with reference to any particular module, component, or routine. 
     As mentioned above, in some configurations, the system may be programmed to not only detect a hit or no hit, but the relative force of the hit, and take appropriate corrective steps. For example, if a shooter was using a low impact round such as .22 long rifle, or the hit is minor because it is only a glancing blow as opposed to a direct hit, the system may only send a message to the shooter, having determined that the hits are unlikely to cause significant damage. Thus, the system may allow a greater number of such low-impact hits. In contrast, if the sensors detect a hit from a larger caliber round (such as a .45 caliber or a high velocity round with substantial inertia), such a detected hit may have enough force to cause the target retriever to shut down even if the predetermined number of hits has not been detected. Additionally, while the number of hits allowed has been discussed as three, the actual number of hits used can be decided by the range based on their use profiles, type of equipment, etc., and may be 1, 2 3, 4, 5, or any other number or a combination of a number and detected force of the impact. 
     According to another aspect of the present disclosure, the target carrier  20  may comprise an onboard camera  60 . As seen in  FIG. 8 , the camera  60  may be in communication with the controller(s) and thereby in communication with a shooter interface  42  and/or a range server  40 , as discussed in more detail below. 
     The camera  60  may be placed at any suitable location on the target carrier  20 . In one configuration, the camera is placed behind a steel plate  64  (see  FIGS. 9-11 ) which may be disposed at a downward angle to deflect projectiles away from the functional components of the carrier, such as target actuator  35 . Mounting behind the steel plate  64  may offer protection to the camera from bullets. A piece of shock absorbing material  68  may be placed between the camera  60  and the steel plate  64  (such as a shock absorbing polymer, visco-elastic polymer, visco polymers or simply polymers, rubber, neoprene, silicone, Sorbothane®, urethane foam, etc.). In other configurations, the camera may be additionally or alternatively provided with a bullet proof case. 
     The camera  60  may direct its view towards a target  38  mounted on the target carrier  20 . Because the target  38  may typically be located at an angle below camera  60 , the camera image output may be provided with keystone correction. Keystone correction may allow the image to be flattened for presentation on a screen as the image would appear if the camera  60  were directly in front of target  38  (instead of located above target  38 ). In other configurations, the camera  60  may be provided with a tilt-shift lens for optimizing the view of the target  38 . 
     In configurations where the camera  60  is in communication with the target carrier controller  30  (it will be appreciated that the camera  60  may be provided with its own controller or may use the controller of the carrier), the image viewed by the camera  60  may be transmitted in real time to a remote screen. For example, the image may be sent to a screen proximal to a shooter. This may allow the shooter to closely examine the target (which is often several yards away) to see hits to the target. 
     Additionally, software may be provided which analyzes the visual output of camera  60  to automatically determine if a hit has occurred in a desired area. Such software may also be programmed to send a visual and/or audible alert to the shooter to indicate a hit. For example, when the software determines a hit has occurred, the screen located near the shooter may flash a large message that says “HIT,” and/or provide an auditory signal, such as a beep or chime. Other indicators include flashing the lights on the shooter&#39;s lane, etc. Similarly, the software may be able to automatically assign a score to a shooter for a particular shooting scenario. This may simplify training scenarios and make it easier for shooters to identify mistakes made during the scenario. 
     In another configuration, the camera output may be transmitted to a range server  40  for remote viewing. For example, when the training scenario is for police officers, a training officer in a remote room may have access to the camera images of each target for review and analysis. 
     While the invention has been described in particular with reference to certain illustrated configurations, such is not intended to limit the scope of the invention. The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described configurations are to be considered as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope. 
     Described herein is a system for detecting hits to a target carrier, which may comprise: a carrier, the carrier comprising a sensor to detect a strike to the carrier and send a strike signal to a controller in response to the strike signal; the controller in communication with the sensor and a actuator, the controller configured to actuate the actuator when the controller receives a predetermined number of strike signals from the sensor. The actuator may comprise a target actuator and wherein the target actuator turns a target on edge relative to the shooter when the controller receives the predetermined number of strike signals from the sensor. The system may further comprise a target controlled by the actuator, wherein the target has a first, presented position and a second, non-presented position. The actuator may be configured to move the target from the first, presented position to the second, non-presented position when the controller receives the predetermined number of strike signals from the sensor. 
     According to another aspect, the actuator may comprise a motor and the motor may move the carrier to a home position when the controller receives the predetermined number of strike signals from the sensor. 
     In some configurations, the sensor comprises a first sensor and a second sensor. The sensor may comprise one or more of: an accelerometer, a piezo electric sensor, a microphone, a thermocouple, and a strain gauge sensor. 
     The system may further comprise a shooter interface in communication with the controller, wherein the controller is configured to send a warning message to the shooter interface when the controller receives the strike signal from the sensor. The warning message may comprise one or more of an audible sound and a visual alert. 
     The system may further comprise a range server in communication with the controller, and wherein the controller is configured to send a warning message to the range server when the controller receives the strike signal from the sensor. 
     Also described herein is a method for protecting a target carrier from hits to the target carrier, the method may comprise: selecting a carrier, the carrier having a strike sensor located thereon; providing a controller in communication with the carrier and the strike sensor, sensing on the strike sensor a strike to the target carrier, and sending a strike signal from the strike sensor to the controller; and taking at least one corrective measure when the controller receives a predetermined number of strike signals from the strike sensor. 
     The step of selecting a carrier may comprise selecting a carrier having a target actuator for turning a target between a first, presented position and a second, non-presented position. The method may further comprise the step of incrementing the number of strike signals by one for each strike signal received by the controller, and comparing the number of strike signals to a predetermined number of strike signals. 
     According to one aspect, the method may include the step of sending a warning message to a range server when the controller receives at least one strike signal from the strike sensor. The method may also include the step of sending a warning message to a user interface when the controller receives at least one strike signal from the strike sensor. 
     The step of taking at least one corrective measure when the controller receives a predetermined number of strike signals from the strike sensor may comprise actuating the actuator to turn the target from the first, presented position to the second, non-presented position. 
     The step of selecting a carrier may comprise selecting a carrier having a motor and wherein the step of taking at least one corrective measure when the controller receives a predetermined number of strike signals from the strike sensor comprises actuating the motor to move the carrier to a home position. The method may further comprise the step of providing at least one light for a lane of the carrier and controlling the at least one light with the controller, and also the step of the controller making a change to the at least one light of the lane of the carrier when the controller receives the strike signal from the strike sensor. 
     The predetermined number of strike signals may be, for example, as low as one. According to other configurations, the predetermined number of strike signals may be 1, 2, 3, 4, 5, etc. 
     According to another aspect, as shown in  FIG. 12 , a kit  200  is disclosed which may be used to adapt a target carrier  20  that is not capable of detecting hits into a target carrier capable of detecting hits. Such a kit  200  may comprise: a sensor  25  configured to be connected to a controller  30  of the target carrier  20 , computer readable storage medium  210  comprising instructions to be carried out by a processor (processor  220  or controller  30 ) in communication with the sensor and the target carrier, said instructions comprising: the sensor  25  sending a strike signal to the controller  30  when the sensor detects a hit to the target carrier  20 ; and the processor  30 / 210  sending a signal to take at least one corrective measure when the controller receives a predetermined number of strike signals. The sensor of the kit may comprise an accelerometer. 
     The various embodiments described above can be combined to provide further embodiments. All of the U.S. patents, U.S. patent application publications, U.S. patent applications, foreign patents, foreign patent applications and non-patent publications referred to in this specification and/or listed in the Application Data Sheet are incorporated herein by reference, in their entirety. Aspects of the embodiments can be modified, if necessary, to employ concepts of the various patents, applications and publications to provide yet further embodiments. 
     These and other changes can be made to the embodiments in light of the above-detailed description. In general, in the following claims, the terms used should not be construed to limit the claims to the specific embodiments disclosed in the specification and the claims, but should be construed to include all possible embodiments along with the full scope of equivalents to which such claims are entitled.