Patent Publication Number: US-8994548-B2

Title: Automobile location detector

Description:
BACKGROUND 
     Owners of automobiles frequently have difficulty locating their vehicles when parked in a parking lot, parking garage, or on the street. At times, this can be the result of the driver forgetting where they parked or a larger vehicle blocking the view of their vehicle. The problem can further be compounded when the parking area or street is crowded by other vehicles, particularly when the other vehicles may be of similar make, model, and/or color as the vehicle the owner is trying to locate. Historically, when attempting to locate a vehicle in a crowded parking lot, the vehicle owner has traditionally relied on either pressing a panic button or double-pressing a lock button on a portable remote to activate either the vehicle alarm system or a soft chirp respectively. The vehicle owner may then listen for the audible response produced by the vehicle to locate the vehicle. Neither the panic nor the lock button, however, were designed or intended for such use. The panic button was designed to be intentionally loud and harsh to draw attention and alert others to the vehicle. Using the panic button in this fashion makes the alarm system less effective due to the high usage and annoyance factor of the alarm triggering. The chirp from pressing the lock button was designed to be soft and pleasing to the listener to confirm that the vehicle is locked, and thus, may not be loud enough to be heard from a distance. 
     SUMMARY 
     A system includes a receiver configured to receive a signal representing a sequence of user inputs to a portable electronic device and an audible device configured to generate a sound based at least in part on the sequence of user inputs. A duration and volume of the sound is based at least in part on the sequence of user inputs received within a predetermined time interval. 
     A method includes receiving the signal provided to the portable electronic device within a predetermined time interval and generating the sound based at least in part on the sequence of user inputs. The duration and volume of the sound is based at least in part on the sequence of user inputs received within the predetermined time interval. 
     A vehicle includes a receiver that receives the signal representing the sequence of user inputs provided to a portable electronic device and an audible device configured to generate a sound based at least in part on the sequence of user inputs. The duration and volume of the sound is based at least in part on the sequence of user inputs received within a predetermined time interval. The vehicle further includes a control unit that receives the signal and generates a control signal in accordance with the sequence of user inputs provided to the portable electronic device. The audible device is configured to generate the sound based on the control signal. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates an exemplary audible vehicle locator system including a portable electronic device and a control unit. 
         FIG. 2  illustrates a flowchart of an exemplary process that may be implemented by the vehicle locator system of  FIG. 1 . 
         FIG. 3  illustrates a front view of an exemplary portable electronic device. 
         FIG. 4  illustrates a front view of another exemplary portable electronic device. 
         FIG. 5  illustrates a flowchart of an exemplary process for locating the vehicle. 
     
    
    
     DETAILED DESCRIPTION 
     Parking garages are just one of many areas where an individual may become separated from their vehicle and forget where it is parked and/or located. One way an individual may attempt to find their vehicle is by carrying a small portable electronic device capable of communicating with the vehicle, and instructing the vehicle to produce an audible or visual signal to aid the individual in locating the vehicle. 
       FIG. 1  illustrates an exemplary vehicle locator system  100  configured to receive a signal based on a user input and produce a sound using an audible device  120  to aid the user in finding a vehicle. In  FIG. 1 , a vehicle locator system  100  having a portable electronic device  105 , a control transceiver  110 , a control unit  115 , and an audible device  120 , communicates a signal from the portable electronic device  105  to the control unit  115 . The signal may be indicative of the volume and duration of the sound to be produced by the audible device  120 . The control unit  115  may include a processor  140  and a memory device  145 , and may be in communication with a number of peripheral devices, such as an audible device  120 , a sensor  150 , a lock actuator  165 , or a light actuator  170 . The system may take many different forms and include multiple and/or alternate components and facilities. The exemplary components illustrated in the Figures are not intended to be limiting. Indeed, additional or alternative components and/or implementations may be used. 
     The vehicle locator system  100  may be included in any type of passenger or commercial vehicle, such as a car, truck, sport utility vehicle, cross-over vehicle, van, minivan, tractor-trailer, or the like. Other types of vehicles may include a motorcycle, boat, airplane, or train. 
     The portable electronic device  105  may include a keypad  125 , a controller  130 , and a transceiver  135 . An exemplary portable electronic device  105  may be a remote keyless entry fob, a remote transmitter, cell phone, or other mobile device capable of transmitting data across a radio frequency, such as an ultra-high frequency (UHF). The portable electronic device  105  may include various input and output devices, as discussed in greater detail below. One example output device may include a light output, such as a light emitting diode (LED) configured to provide a visual confirmation to the user that an input provided to, e.g., the keypad  125  was received. 
     The keypad  125  may include multiple buttons and be configured to allow a user to input a sequence into the controller  130  (discussed below). The buttons may be provided via conventional physical switches, capacitive sensors, biometric sensors, or other sensing technologies. The buttons may be labeled with alphanumeric characters for inputting a PIN or password, or may be labeled by a picture identifying a function, such as locking or unlocking a vehicle. For example, the keypad may include lock, unlock, and panic buttons (see  FIG. 3 ). A user may press, e.g., the lock button, or any other button on the keypad  125 , a number of times within in a predetermined time frame, and the number of times the button on the keypad  125  is pressed may represent the volume and duration of the sound to be produced by the audible device  120  (discussed in greater detail below). In one exemplary configuration, each subsequent press of the button on the keypad  125  increases the volume and duration of the sound produced by the audible device  120 . For example, after a user presses the button three times, each subsequent press within 5 seconds of the previous press may instruct the control unit  115  to have the audible device  120  increase the volume of the sound produced or the duration of the sound produced. The volume or duration may continue to increase for each subsequent press within, e.g., 5 seconds of the previous press. In addition, the keypad  125  may be used to control the duration and/or brightness of the vehicle lights. 
     The controller  130  may be configured to receive the sequence of inputs from the keypad  125  as entered by the user, and to encode the sequence as a signal including a command to be communicated to the control unit  115  via the transceiver  135 . For instance, the controller  130  may receive an input from the keypad  125  representative of the number of times a user has pressed, e.g., the lock button, and may generate a signal, based representative of the volume and duration of the sound to be produced by the audible device  120  based on the number of times the user pressed the lock button. As an example, the user may press the lock button two times within five seconds to lock the car and for the audible device  120  to produce a sound at a predefined level  1 , signaling the vehicle is locked. If the user were to press the lock button a third time within five seconds of the second press, the controller  130  may be configured to generate the signal to command the audible device  120  to produce a sound at a predefined level  2 , which commands the sound to have a greater volume, duration, or both, relative to the sound generated at predefined level  1 . If the user were to subsequently press the lock button a fourth time within five seconds of the third press, the controller  130  may be configured to generate the signal to command the audible device  120  to produce a sound at a volume and duration associated with a predefined level  3 . At the predefined level  3 , the volume and duration may be greater than at predefined levels  1  and  2 . This process may continue, increasing the level of the sound produced by the audible device  120  with each subsequent press of the lock button by the user. The control unit  115  may be programmed with as many predefined sound levels as needed, and may be programmed to increase in any increment of volume and duration as needed, and to step-up the level in time windows greater or less than 5 seconds between pushes. 
     Furthermore, the controller  130  may be configured to store the sequence for a predetermined amount of time, and upon the user subsequently pressing a button on the keypad  125  within the predetermined amount of time, the controller  130  may be configured to resend the signal to the control unit  115 . For example, the controller  130  may receive an input from the keypad  125  that the user has pressed, e.g., the lock button three times. The controller  130  may encode the sequence of three presses of the lock button as a signal to be communicated to the control unit  115 , as well as store the signal for a period of time, such as 30 seconds, whereas if the user presses the lock button again after 5 second of the prior press but before 30 seconds has elapsed, the controller  130  will resend the signal to the control unit  115 . The signal generated by the controller  130  may also include an instruction for the control unit  115  to transmit a command to a lock actuator  165  configured to lock and/or unlock a vehicle door and/or a light actuator  170  configured to turn at least a subset of interior or exterior lights of the vehicle on or off. 
     The transceiver  135  may be configured to communicate with the control unit  115  via the control transceiver  110 . The transceiver  135  may be configured to communicate the signal from the portable electronic device  105  to the control unit  115  and vice versa. For example, the transceiver  135  may communicate a signal, generated by the controller  130 , including a command representing the volume of the sound to be produced by the audible device  120 . As another example, the transceiver  135  may be configured to receive the GPS location of the vehicle from the GPS module  160  of the control unit  115  upon the user pressing the lock button on the portable electronic device  105 . 
     The control transceiver  110  may be configured to communicate with the transceiver  135  of the portable electronic device  105 . As an example, the control transceiver  110  may be configured to receive a signal, including a command representing the volume of the sound to be generated by the audible device  120 , from the portable electronic device  105 . The control transceiver  110  may be further configured to communicate the signal received from the portable electronic device  105  across a network, such as a controller area network (CAN), to the control unit  115 . The control transceiver may also be configured to receive the location of the control unit  115  from the processor  140  executing a global positioning system (GPS) module  160  (discussed in greater detail below), and transmit the GPS location of the control unit  115  to the portable electronic device  105 . The location of control unit  115  may also be established or supplemented by other means and methods such as cellular tower triangulation by a vehicle modem, dead reckoning via the vehicle dynamics module, triangulation off TV towers, WiFi Hot spots, camera recognition, and other means of establishing a location electronically. 
     The control unit  115  may include a processor  140  and a memory device  145 . The control unit  115  may also be in communication with peripheral devices such as an audible device  120  or a sensor  150 . The processor  140 , embodied in the control unit  115 , may be configured to receive various inputs and generate outputs based on the inputs received or computer executable instructions stored in a memory device  145 . One possible output may include a control signal, such as a pulse-width modulation signal, that can be used to control the operation of the audible device  120 . The processor  140  may be in communication with a memory device  145  configured to store computer-executable program code, such as the instructions of a received signal strength module  155  and a global positioning system (GPS) module  160 . 
     The control unit  115 , executing the instructions of the received signal strength module  155  on a processor  160 , may be configured to determine approximately how far the portable electronic device  105  is from the control unit  115  based on the signal received. The received signal strength module  155  may be configured to determine the distance between the portable electronic device  105  and the control unit  115  by counting the number of redundant messages received by the control unit  115  from the portable electronic device  105 . For example, the portable electronic device  105  may be configured to send out three redundant messages to the control unit  115  and the received signal strength module  155  may be configured to count those messages. If the received signal strength module  155  receives all three messages sent by the portable electronic device  105 , the received signal strength module  155  may conclude that the portable electronic device  105  is near the control unit  115 , and that no further action is required. But, if the received signal strength module  155  only receives one of the three messages from the portable electronic device  105 , the received signal strength module  155  may conclude that the portable electronic device  105  is a greater distance away from the control unit  115  or that there is an object obstructing the signal, and instruct the processor  140  to alter the control signal for the audible device  120  accordingly, i.e., increase the volume of the sound produced above the volume that was requested by the portable electronic device  105 . 
     Furthermore, the control unit  115 , executing the instructions of the GPS module  160  on a processor  160 , may be configured to determine approximately how far the portable electronic device  105  is from the control unit  115  based on the GPS location of the control unit  115  relative to the portable electronic device  105 . The GPS module  160  may be configured to determine the distance between the portable electronic device  105  and the control unit  115  by storing the GPS location of the control unit  115  via the GPS module  160  when the user presses the lock button after exiting the vehicle. At some time later, when the user is attempting to locate their vehicle, the user may press the lock button a number of time signaling the vehicle to produce a sound. The portable electronic device  105  may determine the GPS location of the portable electronic device  105  by using its own portable GPS module  140  (if equipped) or by communicating with the user&#39;s smart phone or other portable device having GPS capability via, e.g., a Wi-Fi or Bluetooth® connection. The GPS location of the portable device may also be established by other means such as cellular tower triangulation, WiFi spot recognition, and other electronic means. The GPS location of the portable electronic device  105  may be included in the signal transmitted to the control unit  115 , where the control unit  115  may then determine the distance between the vehicle and the portable electronic device  105 . If the control unit  115  determines that the portable electronic device  105  is a great distance away from the vehicle, for example, over 50 yards away, the processor  140  may alter the control signal for the audible device  120  accordingly, i.e., increase the volume of the sound produced above the volume that was requested by the portable electronic device  105 . 
     Another exemplary technique for determining the GPS location of the vehicle is through a user&#39;s mobile phone. The control unit  115  may be configured to communicate with the user&#39;s mobile phone via, e.g., a Wi-Fi or Bluetooth® connection. Under this configuration, when the user exits the vehicle and presses, e.g., the lock button on the portable electronic device  105 , the control unit  115  may request the GPS location of the user&#39;s mobile phone over the Bluetooth® connection and store the location for later use. As described above, at some later time, when the user attempts to locate their vehicle, the portable electronic device  105  may request the current GPS location of the user&#39;s mobile phone and include the location in the signal transmitted to the control unit  115 , so that the control unit  115  may be configured to alter the volume and duration of the sound produced by the audible device  120  is required. In another exemplary configuration for determining the GPS location of the control unit  115 , the portable electronic device  105  may be the users mobile phone configured to automatically send the GPS location to the control unit  115  upon the user pressing the lock button. When the portable electronic device  105  is the user&#39;s mobile phone, the portable electronic device  105  may be configured to include the GPS location of the phone in the signal communicated to the control unit  120 , and the control unit may go through the same process as described above in determining how far the portable electronic device  105  is from the control unit  120  and alter the control signal to the audible device  120  if required. 
     The audible device  120  may include any device capable of producing a sound, such as a horn or speaker or piezoelectric device. For example, the audible device  120  may be a car horn configured to receive a control signal from the control unit  115 , the control signal may command the horn  120  to produce sound at a commanded volume and duration. Increasing the magnitude and/or duration of the control signal sent to the horn  120  may increase the loudness of the sound produced by horn  120 . The volume of the sound produced may be a function of the time of day. For instance, the control unit  115  may command a louder sound from the audible device  120  during the daytime and a quieter sound at night. Further, the volume of the sound may be proportional to ambient noise. For instance, the vehicle may include a microphone configured to detect ambient noise, and the control unit  115  may command a louder sound from the audible device  120  when ambient noise is high (e.g., exceeds a predetermined level). Moreover, the sounds produced by the horn  120  may be customized to play representations of songs. In some exemplary approaches, the user may select the sound played by the audio device  120  in response to the signals received from the portable electronic device  105 . The volume of the sound produced may be a function of vehicle battery voltage or the voltage of the control signal output by the processor  140  to the audible device  120 . 
     The vehicle locator system  100  may also include sensor(s)  150  in communication with the control unit  115 . The sensor(s)  150  may be configured to collect information regarding the surrounding environment of the vehicle, and to communicate the information to the control unit  115 . The control unit  115  may be configured to analyze the information provided by the sensor  150  and alter the instruction communicated to the other peripheral devices, such as the audible device  120 . For example, the sensor  150  may include a camera configured to observe the physical surroundings of the vehicle and communicate that information to the control unit  115  for processing. The control unit  115  may be configured to analyze the visual information provided by the camera to determine if there are any objects that may interfere with the sound produced by the audible device  120 . For example, if the control unit  115  determines that the vehicle is parked near a sound absorbing medium, such as a shrub, based on the information received from the sensor  150 , the control unit  115  may be configured to increase the magnitude and duration of the control signal sent to the audible device  120  above what was requested by the portable electronic device  105  in order to compensate for the dampening effect of the sound absorbing medium. Alternatively, if the control unit  115  determines that the vehicle is parked near a sound reflecting medium, such as a brick wall, based on the data from the sensor  150 , the control unit  115  may be configured to decrease the magnitude and duration of the control signal sent to the audible device  120  below what was requested by the portable electronic device  105  in order to compensate for the reflective and/or magnifying effect of the sound reflecting medium. 
     Alternatively, the sensor  150  may include an antenna configured to detect the location of the portable electronic device  105  in relation to the vehicle. For example, there may be separate antennas, one located at the front of the vehicle and a second located at the rear of the vehicle. Upon the user pressing a button on the portable electronic device  105 , such as the lock button, the antennas may send out a pulsating signal that is detected by the portable electronic device  105 , and the portable electronic device  105  upon receiving the signal transmits a signal back to the antennas. The antennas may communicate to the control unit  115  when each antenna received the signal from the portable electronic device  105 , and based on whichever signal was received first, the control unit  115  may be configured to determine direction from which the user departed the vehicle. For example, if the control unit  115  determines that the user departed moving away from the rear of the vehicle based on the information from the sensor  150 , assuming the audible device  120  is directed toward the front of the vehicle, the control unit  115  may be configured to increase the magnitude and duration of the control signal sent to the audible device  120  above what was requested by the portable electronic device  105  in order to compensate for audible device  120  being oriented such that the signal will be loudest traveling in the direction opposite of that which the user departed from the vehicle. Alternatively, if the control unit  115  determines that the user departed moving away from the front of the vehicle based on the information from the sensor  150 , the control unit  115  may be configured to decrease the magnitude and duration of the control signal sent to the audible device  120  below what was requested by the portable electronic device  105  to compensate for the audible device  120  being oriented in the same direction that the user departed from the vehicle. 
     Another possible sensor  150  may include a thermometer configured to determine the ambient temperature or the temperature of the audible device  120 . Sound travels faster at higher ambient temperatures, resulting in a shorter pulse producing a sound at a similar decibel level as a longer pulse at a colder ambient temperature. Furthermore, a similar result will occur when the temperature of the audible device  120  is warmer. An audible device  120  with a warmer temperature will produce a sound at a higher decibel level than a colder audible device  120  despite both receiving a control signal of similar magnitude and duration. 
     The lock actuator  165  may be configured to lock and unlock the vehicle. For example, the lock actuator  165  may be configured to receive an in instruction from the control unit  115  to lock the vehicle when the user has pressed the lock button on the portable electronic device  105 . As another example, the lock actuator  165  may be configured to receive an instruction from the control unit  115  to unlock the vehicle when the user has pressed the unlock button on the portable electronic device  105 . Furthermore, the lock actuator  165  may be configured to unlock all of the doors, or only a single specific door of the vehicle based on the user selection at the portable electronic device  105 . For example, if the user presses the unlock button on the portable electronic device  105  once, the lock actuator  165  may be configured to unlock only the driver&#39;s door, whereas if the user presses the unlock button twice within a predetermined time frame, the lock actuator  165  may be configured to unlock all of the vehicles doors. 
     The light actuator  170  may be configured to control the operation of the lights of the vehicle. For example, the light actuator  170  may be configured to receive an instruction from the control unit  115  to flash the light(s) of the vehicle when the user has pressed the lock button or the unlock button on the portable electronic device  105 . In some instances, the light actuator  170  may be used to generate a visual signal of the location of the vehicle  100 . The visual signal may be generated in addition to or instead of the audible signal discussed above. The light actuator  170  may be configured to control, e.g., the duration and/or brightness of the vehicle lights. The brightness of the lights may be related to ambient light levels. That is, the control unit  115  may cause the lights to be dimmer in low light conditions (e.g., at night) and brighter during instances of high amounts of ambient light (e.g., during daylight hours). The control unit  115  may determine the amount of ambient light using a clock and geographical coordinates of the vehicle or from a sensor (not shown). 
     Whether the vehicle responds with a visual signal, an audible signal, or both, may be determined from the signal sent from the portable electronic device  105 . For instance, the portable electronic device  105  may be configured to receive an input from the user indicating the user&#39;s preference for the response from the vehicle. The portable electronic device  105  may allow the user to select a visual signal, in which case the vehicle will respond by manipulating vehicle lights, an audible signal, in which case the vehicle will respond through a sound produced by the audible device  120 , or both, in which case the vehicle will respond by manipulating the vehicle lights and producing a sound. 
       FIG. 2  illustrates an exemplary process  200  of activating a vehicle locator system  100 . The process  200  may be performed by one or more components of the vehicle or external components such as the control unit  115 , the portable electronic device  105 , and the audible device  120 . 
     At block  205 , the control unit  115  receives a signal. For example, the control transceiver  110  may be configured to receive a signal from a portable electronic device  105  and communicate the signal to the control unit  115 . The signal may represent a sequence of user inputs provided to the keypad  125  of the portable electronic device  105  that represent the user&#39;s request for the audible device  120  to produce a sound for locating the vehicle. 
     At block  210 , the control unit  115  generates the control signal representing a command for the audible device  120  to generate sound based on the signal received at block  205 . For example, if the signal to the control unit  115  from the portable electronic device  105  represents an instruction for the audible device  120  to produce a sound at a predefined level, the control unit  115  will generate the control signal representative of the volume and duration of the sound to be produced by the audible device  120  to create the sound at the predefined level. 
     At block  215 , the control unit  115  provides the control signal to the audible device  120 . For example, the control unit  115  may be configured to provide the generated control signal to the audible device  120  facilitating the user&#39;s interaction with the audible device  120  as the user attempts to locate their vehicle. 
       FIG. 3  illustrates an exemplary remote control or fob system  300 . In  FIG. 3 , a remote system  300 , including a portable electronic device  105  having a lock button  305 , an unlock button  310 , and a panic button  315  is shown. 
     The lock button  305  may be configured to lock the vehicle when pressed by a user. Furthermore, the lock button  305  may be configured to lock the vehicle, signal the audible device  120  to generate a sound, and flash the light(s) of the vehicle. For example, when the lock button  305  is pressed by a user, the control unit may send a command to the lock actuator  165  to lock all of the doors of the vehicle, as well as a command to the light actuator  170  to flash the lights and control signal to the audible device  120  to signal to the user that the vehicle is locked. 
     Alternatively, the unlock button  310  may be configured to unlock the vehicle when the button is pressed. The unlock button  310  may further be configured to unlock all of the vehicle doors, or only a specific door, such as the driver door. For example, if the user presses the unlock button  310  once, the control unit  115  may command the lock actuator  165  to only unlock the driver door of the vehicle. If the user presses the unlock button  310  twice, the control unit  115  may command the lock actuator  165  to unlock all of the doors of the vehicle. As described above, the light actuator  170  and the audible device  120  may be configured to provide visual and/or audible confirmation that the vehicle has been unlocked. 
     The panic button  315  may be configured to activate the security system and signal the audible device  120  to produce a sound at its highest programmed level in order to draw attention to the vehicle. The panic button  315  may further cause the audible device  120  to beep repeatedly for a predetermined amount of time or, e.g., until the panic button  315  is pressed again. 
       FIG. 4  illustrates an alternative exemplary remote system  400 . In  FIG. 4 , a remote system  400 , including a portable electronic device  105  having a lock button  405 , an unlock button  410 , a panic button  415 , a rear-hatch button  420  and a key portion  425  is shown. The remote system  400  may also include a key portion. 
     The lock button  405 , unlock button  410 , and panic button  415  as shown in system  400  function similarly to the lock button  305 , unlock button  310 , and panic button  315  described in  FIG. 3 . The lock button  405  may be configured to lock the vehicle when pressed by a user. Furthermore, the lock button  405  may be configured to lock the vehicle, signal the audible device  120  to generate a sound, and flash the light(s) of the vehicle. The unlock button  410  may be configured to unlock the vehicle when the button is pressed. The unlock button  310  may further be configured to unlock all of the vehicle doors, or only a specific door, such as the driver door. The panic button  415  may be configured to activate the security system and signal the audible device  120  to produce a sound at its highest programmed level in order to draw attention to the vehicle. 
     The rear-hatch button  420  may be configured to unlock or open the trunk, rear hatch, or rear window of the vehicle when pressed, e.g., once or twice. That is, if the user presses the rear-hatch button  420  once, the rear window may open. If, however, the user presses the rear-hatch button  420  twice, the trunk of the vehicle may open instead of, e.g., the rear window. 
     The key portion  425  may be configured to start the vehicle. For example, the key portion  425  may be cut in a pattern to correspond with the ignition system of the vehicle. 
       FIG. 5  illustrates an exemplary process  500  of locating the vehicle. The process  500  may be performed by various devices of the system shown in  FIGS. 1 ,  3 , and  4 , such as by the portable electronic device  105  communicating a signal including a command to be executed by the control unit  115 . 
     At block  505 , the controller  130  receives a sequence of inputs from the keypad  125  as entered by the user. For example, the user may press the lock button on the keypad  125  of the portable electronic device  105  three times, and each successive press of the lock button may be received within a predetermined amount of time since the prior press, such as within five seconds of each other. 
     At block  510 , the controller  130  encodes the sequence of inputs received from the keypad  125  as a signal including a command to be executed by the control unit  115 . For example, the controller  130  may receive a sequence from the keypad  125  that indicates the user pressed the lock button three times. The controller  130  may be configured to encode that sequence as a signal including a command for the control unit  115  to generate a control signal representative of a sound at a predefined volume and duration. The control signal may be transmitted to the audible device  120  which in turn will produce a sound at the predefined volume correlating to the number of times the lock button was pressed by the user. The signal may also include an instruction for the control unit  115  to transmit a command to a lock actuator  165  and/or a light actuator  170 . 
     At block  515 , the controller  130  communicates the signal to the control unit  115  via the transceiver  135  transmitting the signal to the control transceiver  110 . For example, the controller  130  may communicate the generated element of data to the transceiver  135 , and the transceiver  135  may transmit the signal across an ultra-high radio frequency to the control transceiver  110 . The control transceiver  110  may be configured to communicate the signal received from the portable electronic device  105  to the control unit  115  across a network, such as a controller area network (CAN). 
     At block  520 , the control unit  115  generates a control signal based on the signal received from the portable electronic device  105 . For example, the control unit  115  may be configured to generate a control signal that represents a sound to be produced by the audible device  120  at a predefined volume and duration based on the signal received from the portable electronic device  105 . As another example, the control unit  115  may be configured to generate a command based on the signal for an actuator, such as a lock actuator  165  or a light actuator  170 , to lock or unlock the doors of the vehicle or flash the lights of the vehicle. 
     At block  525 , the control unit  115  receives data from the sensor(s)  150 . For example, the control unit  115  may receive visual data from a camera sensor  150  attached to the vehicle. The control unit  115  may be configured to analyze the visual data received from the camera sensor  150  and determine whether the surrounding environment includes a sound absorbing medium, such as a shrub, or a sound reflecting or magnifying medium, such as a brick wall. The control unit  115  may also receive temperature data from a heat sensor  150 . The heat sensor  150  may be configured to record the ambient temperature or the temperature of the electronic device. 
     At decision point  530 , the control unit  115  determines whether there are any environmental conditions present that would require the volume and duration of the sound, as requested by the portable electronic device  105 , to be altered prior to being transmitted to the audible device  120 . The control unit  115  may be configured to analyze visual data received from a camera sensor(s)  150  attached vehicle to determine whether a sound absorbing medium or a sound reflecting or magnifying medium is located near the vehicle. For example, based on the visual data provided by the camera sensor  150 , the control unit  115  may be configured to determine whether there is a sound absorbing medium or a sound reflecting or magnifying medium in the area. A sound absorbing medium, such as a tree or shrub, may dampen the sound produced by the audible device  120 . Alternatively, a sound magnifying or reflecting medium, such as a rock or ceiling in a parking garage, may magnify the sound produced by the audible device  120 . Furthermore, the control unit  115  may be configured to analyze temperature data provided by a heat sensor  150  to determine whether the environmental conditions may improve or inhibit the travel of sound waves. For example, based on the temperature data provided by the heat sensor  150 , the control unit  115  may be configured to determine whether the ambient conditions will affect the travel of the sound waves produced by the audible device  120 . As an example, if the ambient temperature is above a predefined temperature, such as 60 degrees Fahrenheit, the sound waves produced by the audible device  120  may travel faster and as a result be capable of being heard from a greater distance away. Alternatively, if the ambient temperature is below a predefined temperature, such as 30 degrees Fahrenheit, the sound waves produced by the audible device  120  may travel slower and as a result have a reduced range. The process  500  may continue with block  535  if the control unit  115  determines that the temperature conditions fall outside a predefined range, such as above 60 degrees Fahrenheit or below 30 degrees Fahrenheit, or if a sound absorbing or sound magnifying medium is detected near the vehicle. Otherwise, the process  500  may continue to block  545 . 
     At block  535 , the control unit  115  alters the control signal to be transmitted to the audible device  120  based on the set of data received from the sensor(s)  150 . For example, if the control unit  115  determines that based on the visual data from a sensor  150  that a sound absorbing medium is located near the vehicle, the control unit  115  may increase the magnitude and duration of the control signal transmitted to the audible device  120  in order to compensate for the dampening effect of the sound absorbing medium. Alternatively, if the control unit  115  determines that a sound reflecting or sound magnifying medium is located near the vehicle, the control unit  115  may decrease the magnitude and duration of the control signal transmitted to the audible device  120 . As another example, based on the temperature data provided by a heat sensor  150 , the control unit  115  may be configured to alter the magnitude and duration of control signal transmitted to the audible device  120  in relation to the signal received from the portable electronic device  105 . If the control unit  115  determines that the ambient temperature is above predefined temperature, such as 60 degrees Fahrenheit, the control unit  115  may decrease the volume and duration of the control signal transmitted to the audible device  120  in order to compensate for warm environment allowing sound waves to travel faster. Alternatively, if the control unit  115  determines that the ambient temperature is below a predefined temperature, such as 30 degrees Fahrenheit, the control unit  115  may increase the magnitude and duration of the control signal transmitted to the audible device  120 . Similarly, the control unit  115  may be configured to alter the magnitude and duration of the control signal transmitted to the audible device  120  based on the temperature of the audible device  120 , such as a horn. 
     At block  540 , the control unit  115  provides the altered control signal to the audible device  120 , indicative of the magnitude and duration of the sound to be produced by the audible device  120 . For example, the control unit  115  may be configured to transmit a control signal to the audible device  120 , causing the audible device to produce a sound at a predefined volume and duration based on the signal received from the portable electronic device  105  as altered by the control unit  115  based on the data received from the sensor(s)  150 . The process  500  may end after block  540 . 
     At block  545 , the control unit  115  provides the generated control signal to the audible device  120 , indicative of a volume and duration of the sound to be produced by the audible device. For example, the control unit  115  may be configured to transmit a control signal to the audible device  120 , causing the audible device to produce a sound at a predefined volume and duration based on the signal received from the portable electronic device  105 . 
     The process may end after block  545 . 
     In sum, the vehicle locator system  100  may be configured to locate a user&#39;s vehicle through the use of an audible signal being produced by an audible device  120  attached to the vehicle. The volume and duration of the sound produced by the audible device  120  is determined based on a user&#39;s input to a portable electronic device  105  carried by the user. Thus, depending on how many times a user presses a button on the keypad  125  of the portable electronic device  105  will be representative of how loud the sound produced by the audible device  120  at the vehicle should be. Further, the control unit  115  may alter the volume and duration of the sound requested by the portable electronic device  105  based on features of the surrounding environment, such as ambient temperature or sound alter mediums. 
     While the vehicle locator system  100  is described in terms of a system for locating a vehicle, other examples are possible. For instance, the features of the control unit  115  described in the vehicle locator system  100  may be implemented by other types of portable or mobile devices capable of being lost or misplaced by the user, such as an MP3 player, a portable satellite computer, laptop, smartphone or other type of media player. For example, a laptop may include a control unit  115  and audible device  120  as described and be configured to communicate with a user&#39;s portable electronic device  105 , such as a smart phone, capable of communicating a signal to the control unit  115  requesting the audible device  120  to produce a sound when the user is trying to locate their laptop. 
     With regard to the processes, systems, methods, heuristics, etc. described herein, it should be understood that, although the steps of such processes, etc. have been described as occurring according to a certain ordered sequence, such processes could be practiced with the described steps performed in an order other than the order described herein. It further should be understood that certain steps could be performed simultaneously, that other steps could be added, or that certain steps described herein could be omitted. In other words, the descriptions of processes herein are provided for the purpose of illustrating certain embodiments, and should in no way be construed so as to limit the claims. 
     Accordingly, it is to be understood that the above description is intended to be illustrative and not restrictive. Many embodiments and applications other than the examples provided would be apparent upon reading the above description. The scope should be determined, not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. It is anticipated and intended that future developments will occur in the technologies discussed herein, and that the disclosed systems and methods will be incorporated into such future embodiments. In sum, it should be understood that the application is capable of modification and variation. 
     All terms used in the claims are intended to be given their broadest reasonable constructions and their ordinary meanings as understood by those knowledgeable in the technologies described herein unless an explicit indication to the contrary in made herein. In particular, use of the singular articles such as “a,” “the,” “said,” etc. should be read to recite one or more of the indicated elements unless a claim recites an explicit limitation to the contrary.