JP2006070663A - Method and computer program for controlling vehicle-mounted machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and a computer program for controlling a vehicle-mounted machine, which can enhance safety of a vehicle. <P>SOLUTION: In this control method for the vehicle-mounted machine 10, a transmitter, which is separated from the vehicle, outputs an unlocking signal or a locking signal in accordance with the presence or absence of reception of a constantly or periodically transmitted electromagnetic wave. The control method comprises: a step of judging whether a vehicle-mounted electric switch for supplying electric power to a vehicle-mounted electric component in the vehicle or stopping the supply of the electric power is in an ON-position or an OFF-position; and a step of outputting the locking signal when it is judged that the vehicle-mounted electric switch is put into the ON-position in the case where the vehicle is in an unlocked state. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for controlling an in-vehicle device and a computer program for controlling the in-vehicle device. In particular, the present invention relates to a method for unlocking and locking a vehicle and a computer program for executing the method.

  Conventionally, by inserting a key (manual key) into a key hole (manual key key hole) provided in the door of the vehicle and positioning the key at the unlocked position / locked position in the key hole, The user unlocks and locks the vehicle. However, if the user has a luggage in both hands, the user must place the luggage on the ground once to unlock and lock the vehicle. Therefore, in such a case, this unlocking / locking method is inconvenient. Therefore, recently, the vehicle-mounted device is controlled by electromagnetic waves transmitted from a transmitter separated from the vehicle, and the vehicle is unlocked / locked. The transmitter is usually carried by a vehicle user.

  For example, in Patent Document 1, as shown in FIG. 5, a receiving unit 52 that receives an output signal from a portable device (transmitter) via an antenna 51, and an input level of a signal received by the receiving unit 52 are shown. There is disclosed a master unit (vehicle-mounted device) 50 including an input level determination unit 53 for determination and a door key control unit 54 that controls a door key based on a determination result in the input level determination unit 53. . Specifically, the door key control unit 54 performs the unlocking operation when the input level of the received signal received by the receiving unit 52 is equal to or higher than the criterion, and the input level of the received signal is smaller than the criterion. Set to. Accordingly, it is described that the security mechanism can be automatically set and released (unlocked / locked, etc.) by simply moving the portable device while holding the portable device. When the base unit 50 receives a signal based on a user's manual action, the door key control unit 54 first operates based on the signal based on the user's manual action and based on a signal from the portable device. Pause control. Thereafter, when the operation based on the signal by the user's manual action is completed, the suspension of the control of the signal from the portable device is released. Thereby, when there is a set operation and release (unlocking / locking, etc.) of the security mechanism associated with the manual operation, the process associated with the manual operation and the subsequent state can be prioritized. Therefore, it is described that the state desired by the user can be achieved.

  When unlocking / locking a vehicle using the parent device 50 and the portable device disclosed in the above-mentioned Patent Document 1, the user carries the portable device even when the vehicle is in operation. At the same time, since the portable device transmits a signal all the time, the parent device 50 continuously receives electromagnetic waves from the portable device. As a result, the vehicle may be unlocked during driving.

In order to prevent the vehicle from being unlocked, a technology has been developed to prevent the vehicle from being unlocked when the ignition key is in the ACC (Accessory) position or the ON position. (Hereinafter, this technology is referred to as “on-vehicle device control method according to prior art A”)
JP 2003-74236 A

  However, even if the vehicle-mounted device is controlled as in the control method of the vehicle-mounted device in the prior art A, even if the vehicle controlling the vehicle-mounted device is a short vehicle such as a passenger car or a light truck, the heavy truck Even in the case of a vehicle having a long vehicle length such as the following, the following may occur.

  For example, a person carrying a portable device sets the ignition key to the OFF position or removes the ignition key from the keyhole, and removes / loads luggage without getting away from a vehicle such as a passenger car or a light / heavy truck. When the vehicle is performing, the vehicle is kept unlocked. Then, the person carrying the portable device forgets the unlocked state or is unaware of the unlocked state, and inserts the ignition key into the keyhole to turn on the ACC to turn on / off the air or listen to the radio. Alternatively, if the ignition key is set to the ON position in order to move with the vehicle, the in-vehicle device in the conventional technique A does not accept a signal from the portable device.

  Also, for example, if two or more people including a person carrying a portable device are working around an unlocked passenger car or an unlocked lightweight / heavy truck, If a person other than the person who is carrying the camera inserts the ignition key into the keyhole to set the ACC position or the ON position, the vehicle-mounted device in the prior art A will not accept a signal from the portable device.

  From the above, in both specific examples, the in-vehicle device in the related art A does not accept a signal from the portable device. At this time, the person carrying the portable device forgets that the in-vehicle device does not accept the signal from the portable device or is unaware of the state. I think it was locked by moving away from a heavy truck or other vehicle. However, actually, even if a person carrying the portable device moves away from the vehicle, the vehicle is kept unlocked without being locked. For this reason, there is a risk that an object loaded in a vehicle such as a passenger car or a light / heavy truck will be stolen. Moreover, when moving with the vehicle, it will move in an unlocked state, and there exists a possibility that a door may open during a movement. Therefore, the safety of the vehicle controlled by the vehicle-mounted device in the prior art A is extremely low.

  Further, in a vehicle having a long vehicle length such as a heavy truck, the vehicle-mounted device may be placed at the rear of the vehicle. In a vehicle in which such an in-vehicle device is placed at the rear of the vehicle, if the driver carries the portable device, the electromagnetic wave from the portable device reaches the in-vehicle device when the driver is seated in the driver's seat. As a result, it is locked. However, in the case where the in-vehicle device cannot receive the electromagnetic wave from the portable device as shown in the above two specific examples, the vehicle is not locked even if the driver is seated. Therefore, even though the driver thinks that he / she is locked by sitting in the driver's seat, the vehicle remains unlocked, and as a result, the vehicle's doors and loading platforms are moved while the vehicle is moving. There is a risk that the door will open. Therefore, there is a possibility that an object loaded in the vehicle will fall to the ground while moving by the vehicle, and the loaded object cannot be transported safely. Moreover, since the door opens and closes during operation, it is very dangerous.

  The present invention has been made in view of such points, and an object of the present invention is to provide a method for controlling an in-vehicle device and a computer program for controlling the in-vehicle device that can improve the safety of the vehicle. There is to do.

  The first method for controlling an in-vehicle device according to the present invention controls an in-vehicle device that outputs an unlocking signal or a locking signal according to the presence or absence of electromagnetic waves transmitted from a transmitter separated from a vehicle at all times or periodically. Determining whether the vehicle is in a parked state or the vehicle is in a state other than the parked state, and when the vehicle is in an unlocked state, the vehicle is in a state other than the parked state. A step of outputting the locking signal when it is determined that the state is in a state.

  The method for controlling the second vehicle-mounted device of the present invention controls the vehicle-mounted device that outputs an unlocking signal or a locking signal according to the presence or absence of reception of electromagnetic waves that are constantly or periodically transmitted from a transmitter separated from the vehicle. Determining whether an in-vehicle electrical switch that performs power supply to an in-vehicle electrical component in the vehicle or that stops power supply is in an ON position or whether the in-vehicle electrical switch is in an OFF position; and A step of outputting the locking signal when it is determined that the in-vehicle electrical switch is in the ON position when the vehicle is unlocked. Here, the on-vehicle electrical components include radios and air conditioners.

  In the method for controlling the first and second vehicle-mounted devices of the present invention, the transmitter being separated from the vehicle means, for example, being carried by a vehicle user.

  Moreover, the vehicle equipment is installed in the vehicle or the loading platform. The vehicle is unlocked when the in-vehicle device outputs an unlocking signal, and the vehicle is locked when the in-vehicle device outputs a locking signal. Once unlocked, the unlocked state is maintained even if the in-vehicle device subsequently outputs an unlock signal, and once locked, the in-vehicle device may subsequently output the lock signal. The locked state is maintained.

  Also, if the distance between the in-vehicle device and the transmitter is longer than a predetermined distance, the electromagnetic wave transmitted from the transmitter attenuates before reaching the in-vehicle device, and as a result, even if the electromagnetic wave is in-vehicle device Even if it reaches, the in-vehicle device cannot receive because it is a weak signal. However, as the distance between the in-vehicle device and the transmitter becomes shorter than a predetermined distance, the intensity of the electromagnetic wave reaching the in-vehicle device becomes gradually larger, and as a result, the in-vehicle device can receive the electromagnetic wave.

  In the first method for controlling an in-vehicle apparatus according to the present invention, when the vehicle is in an unlocked state and the vehicle is determined to be in a parked state, the lock signal is output due to the absence of reception of the electromagnetic wave. Preferably, the method further comprises a step. Further, in the second method for controlling an in-vehicle device according to the present invention, when it is determined that the in-vehicle electrical switch is in the OFF position when the vehicle is in the unlocked state, the locking is performed because the reception of the electromagnetic wave is lost. Preferably, the method further includes a step of outputting a signal.

  Moreover, the method for controlling the first vehicle-mounted device of the present invention includes a step of locking the vehicle when the vehicle is in an unlocked state when the vehicle is changed from the parked state to a state other than the parked state. It is preferable to provide. The second method for controlling an in-vehicle device of the present invention includes a step of locking the vehicle when the on-vehicle electrical switch is changed from the OFF position to the ON position when the vehicle is in an unlocked state. It is preferable.

  In a preferred embodiment of the method for controlling the first vehicle-mounted device of the present invention, the vehicle is in a parked state means that a side brake is in an ON position, and the vehicle is in a state other than the parked state. In this case, the side brake is in the OFF position. In another preferred embodiment of the method for controlling the first in-vehicle device of the present invention, the vehicle is in a parked state is that a shift position of an AT (automatic) vehicle is in a P position, The vehicle being in a state other than the parking state means that the shift position of the AT vehicle is in a position other than the P position.

  In a preferred embodiment of the method for controlling the second in-vehicle device according to the present invention, the in-vehicle electrical switch is in the ON position means that the ignition key is in the ACC position or the ON position, The switch being in the OFF position means that the ignition key is in the OFF position or that the ignition key is not inserted into the keyhole. Further, when the transmitter also has an ignition key function, the in-vehicle electrical switch is in the ON position means that the switch that only supplies power to the in-vehicle electrical component and stops the power supply is in the ON position. And the in-vehicle electrical switch is in the OFF position means that the switch is in the OFF position.

  The computer program for controlling the in-vehicle device of the present invention causes the in-vehicle device to execute the above-described method for controlling the in-vehicle device. This program is installed in the ROM of the in-vehicle device.

  The method for controlling the in-vehicle device of the present invention can improve the safety of the vehicle. Moreover, the safety of a vehicle improves by running the computer program which controls the vehicle equipment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited to embodiment shown below.

Embodiment 1 of the Invention
In the first embodiment, referring to FIGS. 1 and 2, when the vehicle is unlocked by electromagnetic waves transmitted from the transmitter constantly or periodically, the in-vehicle electrical switch is switched from the OFF position to the ACC position or the ON position. A method of automatically locking a vehicle when a transition is made is shown. 1 is a block diagram of the in-vehicle device 10 in the present embodiment, and FIG. 2 is a flowchart showing a method for controlling the in-vehicle device 10 in the present embodiment. In the present embodiment, the in-vehicle electrical switch is in the ON position means that the ignition key is in the ACC position or the ON position, and the in-vehicle electrical switch is in the OFF position means that the ignition key is in the OFF position or It means that it is not inserted in the keyhole.

  As shown in FIG. 1, the in-vehicle device 10 is demodulated by an antenna 11 that receives electromagnetic waves transmitted from a transmitter (not shown), a demodulation circuit 12 that demodulates electromagnetic waves received by the antenna 11, and a demodulation circuit 12. And a control circuit 13 for outputting an unlock signal or a lock signal according to the received signal.

  The transmitter transmits electromagnetic waves to the in-vehicle device 10, to be precise, to the antenna 11 of the in-vehicle device 10 constantly or periodically. However, the transmitter has an adjustment function for adjusting the transmission distance of the electromagnetic wave to be transmitted. And when a transmitter is arrange | positioned sufficiently away from the vehicle equipment 10, the vehicle parked in the vehicle mounting position of the vehicle equipment, the material of the body, the material of the loading platform, the building around the vehicle, and the vehicle periphery However, it is not possible to say unconditionally because of the influence of the above, but considering the adjustment function of the transmitter, the user of the vehicle carrying the transmitter is more than a few meters to 10 meters away from the vehicle. If it exists in the place, the electromagnetic waves transmitted from the transmitter will attenuate before reaching the vehicle-mounted device 10. Therefore, the in-vehicle device 10 cannot receive the electromagnetic wave. However, if the distance between the transmitter and the vehicle-mounted device 10 is about several meters to 10 m or less, the intensity of the electromagnetic wave reaching the vehicle-mounted device 10 increases, and as a result, the vehicle-mounted device 10 can receive the electromagnetic wave. Become. Further, the transmitter may be integrated with a key (hereinafter referred to as “manual key”) used for manually unlocking and locking the vehicle, or may be separate from the manual key. Furthermore, the transmitter may include a button for transmitting a signal for unlocking / locking the vehicle.

  The in-vehicle device 10 is disposed in the vehicle or on the loading platform, and is locked or unlocked by being controlled by a computer program described later.

  The demodulation circuit 12 extracts (demodulates) a signal necessary for unlocking the vehicle from the modulated signal received by the antenna 11.

  Connected to the control circuit 13 are an ACC input electric wire 13a, a locking signal output (lock output) electric wire 13b, and an unlocking signal output (unlock output) electric wire 13c. The ACC input wire 13a is electrically connected to a wire extending from a key cylinder (not shown) that monitors the position of the ignition key in the keyhole. Therefore, information regarding the position of the ignition key in the keyhole is transmitted from the key cylinder to the control circuit 13. The locking signal output wire 13b and the unlocking signal output wire 13c are electrically connected to an electric wire extending from a locking / unlocking device (not shown) that receives the locking signal or the unlocking signal and locks or unlocks the vehicle. It is connected to the. Therefore, the lock signal or the unlock signal is transmitted from the control circuit 13 to the lock / unlock device.

  Below, the method of controlling the vehicle equipment 10 is shown.

  First, a method for automatically unlocking a vehicle will be described with reference to FIG. First, as shown in step S101, when the vehicle is locked, a user of the vehicle approaches the vehicle while carrying the transmitter. At this time, the in-vehicle device 10 determines whether the electromagnetic wave is received or not. The transmitter transmits electromagnetic waves constantly or periodically, and the electromagnetic waves are received by the in-vehicle device 10 when the user approaches the vehicle to such an extent that the in-vehicle device 10 can receive the electromagnetic waves. The electromagnetic wave received by the in-vehicle device 10, more precisely, the electromagnetic wave received by the antenna 11 is demodulated by the demodulation circuit 12 and transmitted from the demodulation circuit 12 to the control circuit 13. Then, the process proceeds to step S102.

  In step S102, it is determined whether the ignition key (described as “vehicle key” in FIG. 2) is in the ACC position or the ON position, or whether the ignition key is in the OFF position or not inserted into the keyhole. To do. The position of the ignition key in the keyhole is determined based on a signal input from the key cylinder described above to the control circuit 13 through the electric wire 13a for ACC input.

  When it is determined that the ignition key is at the ACC position or the ON position, the on-vehicle electrical components such as the radio and the air conditioner are in the ON state, or the vehicle state is either immediately before starting driving, during driving, or immediately after driving ends. . In this state, if the vehicle is unlocked when the vehicle-mounted device 10 receives electromagnetic waves transmitted from the transmitter, the door opens during driving or the like, which is very dangerous. Therefore, in this case, the locked state of the vehicle is maintained as shown in FIG. Therefore, for example, even when the vehicle-mounted device 10 receives electromagnetic waves transmitted from the transmitter because the driver carries the transmitter while moving in the vehicle, the vehicle is erroneously unlocked. Absent.

  On the other hand, if it is determined that the ignition key is in the OFF position or the ignition key is not inserted into the keyhole, the vehicle engine is not running and the process proceeds to step S103.

  In step S103, the signal received by the antenna 11 and transmitted to the control circuit 13 via the demodulation circuit 12 is transmitted from the control circuit 13 to the above-described locking / unlocking device through the unlocking signal output wire 13c. That is, in this step, the unlocking signal is transmitted to the above-described locking / unlocking device through the unlocking signal output wire 13c. Then, the vehicle is unlocked as shown in step S104.

  Next, a method for automatically locking the vehicle will be described with reference to FIG. First, as shown in step S111, the vehicle is unlocked. Then, the process proceeds to step S112.

  In step S112, it is determined whether the ignition key is in the ACC position or the ON position, or whether the ignition key is in the OFF position or not inserted into the keyhole.

  When it is determined that the ignition key is at the ACC position or the ON position, the on-vehicle electrical components such as the radio and the air conditioner are in the ON state, or the vehicle state is either immediately before starting driving, during driving, or immediately after driving ends. . At this time, it is very dangerous for the vehicle to maintain the unlocked state. Therefore, if the ignition key is at the ACC position or the ON position, the process proceeds to step S115 and the vehicle is locked. Therefore, for example, even if the person carrying the transmitter sets the ignition key to the ACC position or the ON position, passenger cars, light weight / heavy trucks, etc. are locked. Also, when working with multiple people, if the ignition key is set to the ACC position or the ON position for a person other than the person carrying the transmitter to listen to the radio in the car or to switch on the air conditioning Even if the person carrying the transmitter is near a passenger car or a light / heavy truck, the vehicle is locked.

  In this case, even if the person carrying the transmitter did not notice that it was automatically locked and closed, the person is carrying the transmitter, so the manual key attached to the transmitter The vehicle can be unlocked manually by using or pressing the unlock button of the transmitter.

  On the other hand, if it is determined that the ignition key is in the OFF position or the ignition key is not inserted into the keyhole, the vehicle is parked and the process proceeds to step S113.

  In step S113, it is determined whether or not the vehicle user leaves the vehicle. Specifically, it is determined whether or not the in-vehicle device 10 receives an electromagnetic wave transmitted from the transmitter.

  When it is determined that the user does not leave the vehicle, the vehicle-mounted device 10 receives the electromagnetic wave from the transmitter, and thus the vehicle returns to step S112 without being locked. That is, the unlocked state is maintained.

  On the other hand, if it is determined that the user is moving away from the vehicle, the process proceeds to step S114 when the user moves away from the vehicle so that the electromagnetic wave transmitted from the transmitter is not received by the in-vehicle device 10.

  In step S114, a signal that the vehicle-mounted device 10 cannot receive the electromagnetic wave transmitted from the transmitter is transmitted from the control circuit 13 to the above-described locking / unlocking device through the locking signal output wire 13b. That is, in this step, the locking signal is transmitted to the above-described locking / unlocking device through the locking signal output wire 13b. Then, as shown in step S115, the vehicle is locked.

  And the method of controlling the above-mentioned vehicle equipment 10 is performed by the computer program which is controlling the vehicle equipment 10.

  A computer program for unlocking the vehicle when the vehicle is in a locked state, causing the computer controlling the vehicle-mounted device 10 to determine whether the vehicle-mounted electrical switch is in the ON position or the OFF position; A procedure for maintaining locking when it is determined that the in-vehicle electrical switch is in the ON position, and a procedure for outputting an unlock signal by receiving electromagnetic waves from the transmitter when it is determined that the in-vehicle electrical switch is in the OFF position; Is executed.

  The computer program for locking the vehicle includes a procedure for causing the computer that controls the vehicle-mounted device 10 to determine whether the vehicle-mounted electrical switch is in the ON position or the OFF position, and when the vehicle is in the unlocked state. When it is determined that the in-vehicle electrical switch is in the ON position, a procedure for outputting a locking signal is executed, and when it is determined that the in-vehicle electrical switch is in the OFF position when the vehicle is in the unlocked state, When the vehicle is in the unlocked state, the procedure for locking the vehicle when the vehicle-mounted electrical switch is changed from the OFF position to the ON position is executed.

  Furthermore, it is preferable that these computer programs cause the computer that controls the vehicle-mounted device 10 to execute a procedure for determining whether the vehicle is in a locked state or an unlocked state. The program is installed in the ROM of the in-vehicle device 10.

  As described above, since the method for controlling the vehicle-mounted device 10 in the present embodiment includes step S102, the vehicle can be prevented from being unlocked during driving.

  In addition, since the method for controlling the vehicle-mounted device 10 in the present embodiment includes step S112, as soon as the ignition key is not inserted into the keyhole or is in the OFF position, the vehicle becomes the ACC position or the ON position. Locked. For this purpose, for example, the person carrying the transmitter sets the ignition key to the OFF position or removes the ignition key from the keyhole and removes / loads luggage and gets on / off the person without leaving the passenger car or light / heavy truck For example, if you are working around a passenger car or around a lightweight / heavy truck in an unlocked state, the person forgets that the vehicle remains unlocked. The vehicle is locked when the person inserts the ignition key into the keyhole to the ACC position or the ON position, even if the user is not aware of the situation.

  Also, for example, when two or more people including the person carrying the transmitter are working around a passenger car or around a heavy / light truck, the person carrying the transmitter is not Even if the third party does not know that the ignition key has been inserted into the keyhole to the ACC position or the ON position, the vehicle is locked when the third party sets the ignition key to the ACC position or the ON position.

  Further, even in a vehicle in which the vehicle-mounted device is placed at the rear of the vehicle, the vehicle is locked when the driver or a third party sets the ignition key to the ACC position or the ON position.

  Therefore, in the method for controlling the in-vehicle device 10 in the present embodiment, when a passenger car or a light / heavy truck is unlocked, a person carrying the transmitter or a third party other than that person presses the ignition key. If the ACC position or the ON position is set, the vehicle is immediately locked. For this reason, the method for controlling the vehicle-mounted device 10 in the present embodiment is different from the method for controlling the vehicle-mounted device in the prior art A, so that an object loaded in the vehicle is not stolen and moved by the vehicle. The door or luggage door of the vehicle does not open inside, and an object loaded in the vehicle does not fall on the ground or the like during the movement. As a result, the method for controlling the in-vehicle device 10 in the present embodiment can improve the safety of the vehicle as compared with the method for controlling the in-vehicle device in the conventional technique A.

  Further, in the method for controlling the vehicle-mounted device 10 in the present embodiment, the safety of the vehicle is improved as described above by a simple method of changing the computer program that controls the vehicle-mounted device 10 from the conventional computer program. Can be made. Therefore, it is not necessary to prepare new in-vehicle electrical components in order to improve the safety of the vehicle, and the safety of the vehicle can be improved at a very low cost and simply.

  Further, in the method for controlling the vehicle-mounted device 10 in the present embodiment, the information regarding the position of the ignition key is transferred to the control circuit 13 by electrically connecting the ACC input wire 13a and the wire extending from the key cylinder. Sent. Also, the lock signal or the unlock signal is transmitted from the control circuit 13 by electrically connecting the lock signal output wire 13b and the unlock signal output wire 13c to the wire extending from the unlocking device. Is done. From the above, the vehicle-mounted device 10 can be controlled as long as the above-described electric wires are electrically connected to each other. Therefore, the in-vehicle device 10 according to the present embodiment can be retrofitted to the vehicle as an option, and thus can be applied to any type of vehicle.

  In the present embodiment, the in-vehicle electrical switch may be a switch for supplying power to the in-vehicle electrical component or stopping the supply.

<< Embodiment 2 of the Invention >>
In the second embodiment, when the vehicle is in an unlocked state due to electromagnetic waves constantly or periodically transmitted from the transmitter, the vehicle state transitions from the parking state to a state other than parking using FIGS. Shows how to automatically lock the vehicle. FIG. 3 is a block diagram of the in-vehicle device 20 in the present embodiment, and FIG. 4 is a flowchart showing a method for controlling the in-vehicle device 20 in the present embodiment. In the present embodiment, the vehicle being in a state other than the parking state means that the side brake is in the OFF position, and the vehicle being in the parking state means that the side brake is in the ON position. In the present embodiment, only the parts different from the first embodiment will be described.

  As shown in FIG. 3, the in-vehicle device 20 is demodulated by an antenna 11 that receives an electromagnetic wave transmitted from a transmitter (not shown), a demodulation circuit 12 that demodulates the electromagnetic wave received by the antenna 11, and a demodulation circuit 12. And a control circuit 23 for outputting an unlock signal or a lock signal according to the received signal.

  The control circuit 23 is connected to a lock signal output (lock output) electric wire 23a, an unlock signal (unlock output) output electric wire 23b, and a parking detection input electric wire 23c. Here, the lock signal output wire 23a and the unlock signal output wire 23b are the same as the lock signal output wire 13b and the unlock signal output wire 13c in the first embodiment, respectively. The electric wire 23c for parking detection input is electrically connected to an electric wire extending from a side brake device (not shown). Therefore, information regarding the position of the side brake is transmitted from the side brake device to the control circuit 23.

  A method for controlling the in-vehicle device 20 will be described below.

  First, a method for automatically unlocking a vehicle will be described with reference to FIG. First, as shown in step S201, when the vehicle is locked, a user of the vehicle approaches the vehicle while carrying the transmitter. And the electromagnetic wave is received by the vehicle equipment 20 when the user approaches the vehicle to such an extent that the vehicle equipment 20 can receive electromagnetic waves. The electromagnetic wave received by the in-vehicle device 20 is demodulated by the demodulation circuit 12 and transmitted from the demodulation circuit 12 to the control circuit 23. Then, the process proceeds to step S202.

  In step S202, it is determined whether the vehicle is in a parking state or in a state other than the parking state. In order to determine whether the vehicle is in a parked state or in a state other than the parked state, a signal input to the control circuit 23 from the side brake device through the parking detection input wire 23c. Based on the above, the position of the side brake may be determined.

  When it is determined that the side brake is in the OFF position, the vehicle is in a state immediately before starting driving, during driving, or immediately after driving. Therefore, in this state, since it is dangerous that the vehicle is unlocked, the locked state of the vehicle is maintained.

  On the other hand, if it is determined that the side brake is in the ON position, the vehicle is parked and the process proceeds to step S203.

  In step S203, the signal received by the antenna 11 and transmitted to the control circuit 23 through the demodulation circuit 12 passes through the wire 23b for unlocking signal output from the control circuit 23, and the locking / unlocking device described in the first embodiment. Sent to. Then, the vehicle is unlocked as shown in step S204.

  Next, a method for automatically locking the vehicle will be described with reference to FIG. First, as shown in step S211, the vehicle is unlocked. Then, the process proceeds to step S212.

  In step S212, it is determined whether the vehicle is in a parking state or in a state other than the parking state.

  When it is determined that the side brake is in the OFF position, the vehicle is in the state immediately before the start of driving, during driving, or immediately after the end of driving. Therefore, in this state, since it is dangerous that the vehicle is unlocked, the process proceeds to step S215, and the vehicle is locked.

  On the other hand, if it is determined that the side brake is in the ON position, the vehicle is parked and the process proceeds to step S213.

  In step S213, it is determined whether or not the vehicle user leaves the vehicle.

  If it is determined that the user does not leave the vehicle, the vehicle-mounted device 20 receives the electromagnetic wave from the transmitter, and therefore the vehicle returns to step S212 without being locked.

  On the other hand, when it is determined that the user is going away from the vehicle, if the user is away from the vehicle so that the electromagnetic wave transmitted from the transmitter is not received by the in-vehicle device 20, the process proceeds to step S214.

  In step S214, the signal indicating that the vehicle-mounted device 20 cannot receive the electromagnetic wave transmitted from the transmitter, that is, the locking signal passes through the lock signal output wire 23a from the control circuit 23, and is applied as described in the first embodiment. Sent to the lock device. Then, as shown in step S215, the vehicle is locked.

  And the method of controlling the above-mentioned vehicle equipment 20 is performed by the computer program which is controlling the vehicle equipment 20.

  The computer program for unlocking the vehicle when the vehicle is in the locked state causes the computer that controls the vehicle-mounted device 10 to determine whether the vehicle is in the parked state or in a state other than the parked state. When it is determined that the vehicle is in a state other than the parking state, the lock is maintained, and when the vehicle is determined to be in the parking state, an unlock signal is output by receiving electromagnetic waves from the transmitter. And execute the procedure.

  The computer program for locking the vehicle includes a procedure for causing the computer that controls the vehicle-mounted device 10 to determine whether the vehicle is in a parked state or in a state other than the parked state, and the vehicle is in an unlocked state. When it is determined that the vehicle is in a state other than the parking state, a procedure for outputting a locking signal is executed, and when it is determined that the vehicle is in the parking state when the vehicle is in the unlocked state A procedure for outputting a locking signal when no electromagnetic wave is received and a procedure for locking the vehicle when the in-vehicle electrical switch is changed from the OFF position to the ON position when the vehicle is unlocked are executed.

  As described above, since the method for controlling the vehicle-mounted device 20 in this embodiment includes step S212, the vehicle is locked as soon as the position of the side brake is changed from the ON position to the OFF position. Therefore, for example, even if the side brake is released in the unlocked state of the vehicle, the vehicle is immediately locked, so that the danger of driving the vehicle while maintaining the unlocked state can be avoided.

  Also, in general, since the side brake is set to the OFF position immediately before moving the vehicle, even when multiple people get in several times, the vehicle is locked after all people get on the vehicle. It becomes. Therefore, it is not necessary to unlock the vehicle using a manual key every time a person gets on the vehicle. As described above, the method for controlling the in-vehicle device 20 according to the present embodiment has the effects of the method for controlling the in-vehicle device 10 according to the first embodiment as well as the new effect of being excellent in convenience.

<< Embodiment 3 of the Invention >>
In Embodiment 3, using FIGS. 3 and 4, when the vehicle is in an unlocked state due to electromagnetic waves constantly or periodically transmitted from the transmitter, when the vehicle state transitions from a parking state to a state other than parking. A method of automatically locking a vehicle is shown. In the present embodiment, the vehicle being in a state other than the parking state means that the shift position of the AT vehicle is a position other than the P position. The fact that the vehicle is in a parked state means that the shift position of the AT vehicle is the P position. That is, this embodiment differs from the second embodiment only in the specific form of the parking state.

  The in-vehicle device 20 in the present embodiment is substantially the same as the in-vehicle device 20 in the second embodiment, but the parking detection input wire 23c connected to the control circuit 23 monitors the shift position of the AT vehicle. It is electrically connected to the electric wire extending from the shift position monitoring device.

  The method for controlling the in-vehicle device 20 in the present embodiment differs from the method for controlling the in-vehicle device 20 in the second embodiment only in step S202 and step S212. Therefore, only step S202 and step S212 are shown below.

  In step S202 in this embodiment, it is determined whether the vehicle is in a parking state or in a state other than the parking state. In order to determine whether the vehicle is in a state other than parking or in a parking state, a signal input to the control circuit 23 from the shift position monitoring device described above through the parking detection input wire 23c. Based on the above, the shift position of the AT vehicle can be determined.

  If it is determined that the shift position is at a position other than the P position, the vehicle engine is running, so the vehicle state is either immediately before the start of driving, during driving, or immediately after the end of driving. Therefore, in this state, it is dangerous that the vehicle is unlocked. In this case, the locked state of the vehicle is maintained as shown in FIG.

  On the other hand, if it is determined that the shift position is at the P position, the process proceeds to step S203 described in the second embodiment.

  In step S212 in this embodiment, it is determined whether the vehicle is in a parking state or in a state other than the parking state.

  When it is determined that the shift position is at a position other than the P position, the vehicle is in a state immediately before starting driving, during driving, or immediately after driving. At this time, it is very dangerous if the vehicle is unlocked. Therefore, the vehicle is locked.

  On the other hand, if it is determined that the shift position is at the P position, the vehicle is parked and the process proceeds to step S213 described in the second embodiment.

  And the method of controlling the vehicle equipment 20 in this embodiment is substantially the same as the effect which the method of controlling the vehicle equipment 20 in the said Embodiment 2 show | plays.

<< Other Embodiments >>
By using the method for controlling the in-vehicle devices 10 and 20 of the present invention, it is possible to control an in-vehicle device for a passenger car, an in-vehicle device for a lightweight / heavy truck, and the like. The vehicle type of the vehicle carrying the vehicle-mounted device controlled by this control method is not particularly limited.

  Further, the door to be unlocked / locked by the method of controlling the vehicle-mounted devices 10 and 20 may be a door of a passenger room or a door of a cargo bed.

  Moreover, the position in which the vehicle equipment 10 and 20 is arrange | positioned is not specifically limited. The in-vehicle devices 10 and 20 may be disposed at the rear of the vehicle.

  Further, the ACC input electric wire 13a may be electrically connected to the electric wire extending from the key cylinder using a coupling tool such as an electrotap, or may be electrically connected by welding or the like. Other electrical connections between the electric wires may be connected using an electrotap or the like, or may be connected by welding or the like.

  As described above, the present invention is useful for a method for automatically unlocking and locking a vehicle and a computer program for executing the method.

It is a block diagram of the vehicle equipment 10 in Embodiment 1. FIG. It is a flowchart which shows the method of controlling the vehicle equipment 10 in Embodiment 1. FIG. It is a block diagram of the vehicle equipment 20 in Embodiment 2 and 3. FIG. It is a flowchart which shows the method of controlling the vehicle equipment 20 in Embodiment 2 and 3. FIG. It is a block diagram of the main | base station 50 in a prior art example.

Explanation of symbols

10, 20 On-board machine

Claims (8)

A method for controlling an in-vehicle device that outputs an unlocking signal or a locking signal depending on the presence or absence of reception of electromagnetic waves transmitted from a transmitter separated from a vehicle at all times or regularly,
Determining whether the vehicle is in a parked state or the vehicle is in a state other than a parked state;
And a step of outputting the locking signal when it is determined that the vehicle is in a state other than the parking state when the vehicle is in an unlocked state. In the method of controlling the vehicle-mounted device according to claim 1,
An in-vehicle device further comprising a step of outputting the locking signal when reception of the electromagnetic wave is lost when it is determined that the vehicle is parked when the vehicle is unlocked; How to control. In the method for controlling the in-vehicle device according to claim 1 or 2,
That the vehicle is parked means that the side brake is in the ON position,
The method for controlling the vehicle-mounted device, wherein the vehicle is in a state other than the parking state means that the side brake is in an OFF position. In the method for controlling the in-vehicle device according to claim 1 or 2,
That the vehicle is parked means that the shift position of an automatic (AT) car is in the P position;
The method for controlling the vehicle-mounted device, wherein the vehicle is in a state other than the parking state is that the shift position of the AT vehicle is in a position other than the P position. A method for controlling an in-vehicle device that outputs an unlocking signal or a locking signal depending on the presence or absence of reception of electromagnetic waves transmitted from a transmitter separated from a vehicle constantly or periodically,
Determining whether an in-vehicle electrical switch that performs power supply to an in-vehicle electrical component in the vehicle or stops supplying power is in an ON position or whether the in-vehicle electrical switch is in an OFF position;
And a step of outputting the locking signal when it is determined that the in-vehicle electrical switch is in the ON position when the vehicle is in an unlocked state. In the method of controlling the in-vehicle device according to claim 5,
When the vehicle is in an unlocked state, the vehicle-mounted electrical switch further includes a step of outputting the lock signal when it is determined that the on-vehicle electrical switch is in the OFF position when the vehicle receives no electromagnetic waves. How to control the machine. In the method for controlling the vehicle-mounted device according to claim 5 or 6,
The in-vehicle electrical switch is in the ON position means that the ignition key is in the accessory (ACC) position or the ON position.
The method of controlling the vehicle-mounted device, wherein the vehicle-mounted electrical switch is in the OFF position means that the ignition key is in the OFF position or the ignition key is not inserted into the keyhole.   A computer program for controlling an in-vehicle device, which causes the in-vehicle device to execute the method for controlling the in-vehicle device described in any one of claims 1 to 7.

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