KR100749606B1 - Vehicle device control system, unit on the vehicle and portable device - Google Patents

Abstract

The main control ECU 4 determines the opening / closing state of the luggage room door 15 on the condition that the holder of the portable device 1 has operated the ignition switch. When the luggage room door is in the closed state, the rear part transmitter 2g is instructed to transmit the first request signal, and when the luggage room door is in the open state, the second request signal is instructed. The portable device ECU 1c determines the type of the request signal received by the receiver 1a (S110), and when determined to be the second request signal, the transmission output of the response signal transmitted from the transmitter 1b is lower than the normal output. Adjust to the second transmission output (S140).

Portable ECU, Receiver, Transmitter, Luggage Room Door, Main Control ECU

Description

In-vehicle device control system, vehicle side unit and mobile device {VEHICLE DEVICE CONTROL SYSTEM, UNIT ON THE VEHICLE AND PORTABLE DEVICE}

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the in-vehicle device control system in 1st Embodiment.

Fig. 2 is a flowchart showing processing for executing door unlock control and engine start permission control of the vehicle side unit.

Fig. 3 is a flowchart showing the process of the portable device at the time of mutual communication with the vehicle side unit.

4 is a schematic diagram showing a communication area in the luggage room when the luggage room door is opened.

Fig. 5 is a schematic diagram showing the communication area in the luggage room when the luggage room door is opened.

Fig. 6 is a flowchart showing processing of the vehicle side unit in the second embodiment.

Fig. 7 is a flowchart showing processing of the portable device in the second embodiment.

Fig. 8 is a flowchart showing processing of the vehicle side unit in the third embodiment.

Fig. 9 is a flowchart showing processing of the portable device in the third embodiment.

<Explanation of symbols for the main parts of the drawings>

1: mobile

2a to 2e: car outdoor transmitter

2f: car indoor transmitter

2g: rear transmitter

4: main control ECU

6a to 6e: door handle

6a1 to 6e1: touch sensor

6a2 to 6e2: door lock switch

7: steering lock ECU

8: engine ECU

10: vehicle

11a to 15a: door cut lamp switch

15: Luggage Room Door

100: vehicle side unit

[Document 1] Japanese Unexamined Patent Publication No. 2000-104429

The present invention relates to an on-vehicle device control system for controlling the operation of the on-vehicle device by mutual communication between the on-vehicle unit and the portable device, and the vehicle-side unit and the portable device.

Background Art Conventionally, as a vehicle-mounted device control system, for example, as described in JP2000-104429A, each of the portable electronic keys (mobile) is based on a comparison result of the ID code by mutual wireless communication between the vehicle side unit, Controlling the state of door locking or unlocking is switched. In addition, a system is known that permits the release of the steering lock and the start of the engine when the holder of the portable device is in the car interior.

The vehicle side unit includes a vehicle outdoor transmitter that transmits a request signal to a mobile device, a vehicle indoor transmitter, a rear transmitter in a luggage room, a receiver that receives a response signal from the mobile device, and a door or the like based on a result of the transmission and reception with the mobile device. It consists of a main control ECU that controls the vehicle's onboard equipment. The vehicle outdoor transmitter, the vehicle interior transmitter, and the rear transmitter each have a communication area capable of mutual communication with a mobile device in a predetermined range around the vehicle, the vehicle interior, and the luggage room. As a result, the holder of the portable device can detect the approach to the vehicle, the riding on the vehicle, and the getting off from the vehicle.

For example, when the holder of the portable device approaches the vehicle for boarding the vehicle and enters a communication area with the vehicle outdoor transmitter, the portable device transmits a response signal including the ID code to the vehicle side unit in response to the request signal. . When the vehicle-side unit determines that the predetermined relationship is satisfied, such as the ID code acquired from the portable device, such as a registration ID code, the control unit gives a control signal to unlock the doors to the door lock unit as the on-vehicle device. do. When the holder of the mobile device rides on the vehicle and the communication area with the mobile device is moved from the outside of the vehicle to the interior of the vehicle, the vehicle side unit is controlled by the vehicle-mounted device based on the result of matching the ID code to release the steering lock or start the engine. Grant permission.

By the way, the communication area of the rear part transmitter may be enlarged so as to cover a part of the interior of the car, and the communication part of the rear part transmitter may be configured to be able to communicate with the mobile device in all areas of the car interior. When matching of the ID code by mutual communication between the transmitter and the portable device is established, the main control ECU controls to perform steering lock release or engine start permission.

In addition, there may be a case where a baggage such as a bag in a luggage room and a portable device are used as one, and the vehicle is used while the portable device is placed in the luggage room. In this case as well, when steering confirmation of the ID code by mutual communication between the rear transmitter and the portable device is established, steering lock release and engine start permission are performed.

However, if the engine is allowed to start based on the identification result of the ID code by the communication between the transmitter and the portable device in the luggage room, the shield of the radio wave is removed when the luggage room door is opened and the rear transmitter is Communication area by the vehicle is expanded outside. As a result, the engine can be started even if there is a portable device outside the vehicle. Then, for example, when the holder of the portable device opens the luggage room door and performs loading and unloading operations, there is a fear that the engine may be started by a third party and the security is deteriorated.

An object of the present invention is to provide an on-vehicle device control system, a vehicle side unit, and a portable device capable of improving security.

In the present invention, the portable device adjusts the transmission output of the response signal lower than when receiving the first request signal when receiving the second request signal transmitted from the vehicle side unit when the luggage room is in the open state. As a result, even when the luggage room door is opened, the communication area does not extend to the outside of the vehicle, and mutual communication from the outside of the vehicle becomes impossible. Therefore, for example, when the holder of the portable device opens the luggage room door and performs loading and unloading operations, it is possible to prevent the third party from starting the engine, thereby improving security.

In the present invention, the vehicle side unit adjusts the transmission output of the request signal transmitted from the transmitter of the vehicle side unit to be lower than the normal output according to the opening / closing state of the luggage room door. Thereby, the same effect as the above can be acquired. In addition, since the same thing as the conventional one can be used for a portable device, cost reduction can be aimed at the whole system.

Moreover, in this invention, the reception sensitivity of the response signal in a portable device is adjusted according to the opening / closing state of the luggage room door. In other words, the reception sensitivity when the luggage room door is in the open state is lower than the reception sensitivity when the luggage room door is in the closed state. Thereby, even if the luggage room door is in the open state, it is possible to prevent the communication area between the vehicle-side unit and the portable unit from expanding out of the vehicle.

<First Embodiment>

As shown in Fig. 1, the on-vehicle device control system is based on the result of checking the identification of the ID code by mutual communication between the mobile device (electronic key) 1 and the vehicle-side unit 100 installed in the vehicle 10. Thus, the main control ECU 4 provided in the vehicle side unit 100 mounts the vehicle such as control of the locked and unlocked states of the doors 11 to 15, control of the steering lock state, and permit / prohibit engine starting. The control of the device is performed.

The vehicle-side unit 100 is provided in the vehicle 10, and the car outdoor transmitters 2a to 2e installed in the doors 11 to 14 leading to the interior of the car and the luggage room door 15 leading to the luggage room and the car The vehicle interior transmitter 2f installed indoors and the rear part transmitter 2g installed in the luggage room are provided. These car outdoor transmitters 2a to 2e, car interior transmitter 2f and in- luggage transmitters (rear transmitters) 2g in the luggage room are requested on the basis of the transmission instruction signal from the main control ECU 4. Send the signal.

Among these, the car outdoor transmitters 2a to 2e and the car indoor transmitter 2f transmit the first request signal as a request signal. In addition, the rear part transmitter 2g is capable of selectively transmitting two types of signals, a first request signal and a second request signal, and these first and request signals function as an instruction means. The switching is performed based on the transmission instruction signal from the.

Around each door 11-15, the communication area | region which enables mutual communication with the portable apparatus 1 is formed by the vehicle outdoor transmitters 2a-2e, and is carried by the vehicle interior transmitter 2f inside the vehicle interior. The communication area | region which becomes mutual communication with the machine 1 is formed.

In the luggage room, a communication area is formed in which the rear part transmitter 2g enables mutual communication with the mobile device 1. The communication area set by the rear part transmitter 2g is not limited to the luggage room, and the communication area may be enlarged to cover a part of the vehicle interior. In this case, therefore, the entire vehicle interior is covered as the communication area by the vehicle interior transmitter 2f and the rear transmitter 2g. This is because the interior communication area set by the vehicle interior transmitter 2f may not cover the entire vehicle interior, and the rear part transmitter 2g supplements the uncovered area.

In addition, the vehicle-side unit is installed in the vehicle interior or luggage room of the vehicle 10, and in a state capable of receiving a response signal in synchronization with the output of the transmission instruction signal to the transmitters 2a to 2g, the portable device 1 It has a receiver (3) for receiving a response signal transmitted from. The response signal received by the receiver 3 is output to the main control ECU 4, and the main control ECU 4 based on the matching result of the ID code included in the received response signal to unlock / unlock the door. It is judged whether or not to control the state or the like.

Moreover, the vehicle side unit is provided in each door 11-15 of the vehicle 10, and has the door lock control parts 5a-5e which lock-unlock the doors 11-15. The door lock control units 5a to 5e operate in accordance with an instruction signal from the main control ECU 4.

The touch sensors 6a1 to 6e1 are provided on the door handles 6a to 6e of the doors 11 to 15 of the vehicle 10, and the holder of the mobile device 1 is attached to the door handles 6a to 6e. It is possible to detect that the contact is made and the unlock operation is performed on the door handles 6a to 6e. When the unlock operation for the door handles 6a to 6e is detected, the response doors 11 to 15 are unlocked. The door handles 6a2 to 6e2 are also provided on the door handles 6a to 6e. When the door lock switches 6a2 to 6e2 are operated, the response doors 11 to 15 can be locked. The door handles 6a to 6e also serve as antennas of the above-described outdoor transmitters 2a to 2e.

In addition, each door 11-15 is provided with the door cut lamp switches 11a-15a which detect the opening / closing state, respectively. These switches 11a to 15a transmit different detection signals to the main control ECU 4 in the open state and the closed state of the door. The main control ECU 4 functions as a determination means for receiving the detection signals of the door cut lamp switches 11a to 15a and determining the open / closed states of the doors 11 to 15.

On the other hand, the portable device 1 is a receiver 1a for receiving a request signal from the car outdoor transmitters 2a to 2e, the car indoor transmitter 2f or the rear transmitter 2g, and responds to the reception of the request signal. And a transmitter 1b for transmitting a response signal including an ID code and the like, and a portable device ECU 1c connected to the receiver 1a and the transmitter 1b described above and executing various control processes.

The portable device ECU 1c determines the presence or absence of the request signal on the basis of the received signal of the receiver 1a, or generates a response signal including an ID code or the like from the transmitter 1b in response to the request signal. Send it. The portable device ECU 1c also functions as an output adjusting means for adjusting the transmission output of the transmitter 1b in accordance with the type of the received request signal. The function as the output adjusting means adjusts the transmission output of the response signal transmitted from the transmission section 1b to the first transmission output when the first request signal is received at the reception section 1a. When the second request signal is received, the second transmission output is adjusted to be lower than the first transmission output.

Here, the first transmission output may allow the receiver 3 to receive a response signal from the portable device 1 when the portable device 1 is in a vehicle outdoor communication area set by the vehicle outdoor transmitters 2a to 2e. It is a transmission output. The second transmission output is a transmission output that allows the receiver 3 to receive a response signal from the portable device 1 when the portable device 1 is in a luggage room or a car interior.

The vehicle device control system according to the present embodiment includes a steering lock ECU 7 and an engine ECU 8 to improve security of the vehicle 10. The steering lock ECU 7 and the engine ECU 8 also switch on / off the steering lock or switch control of permitting or prohibiting engine starting based on the instruction signal from the main control ECU 4. The processing by the steering lock ECU 7 and the engine ECU 8 will be described below.

When the doors 11 to 14 are opened and closed, and the holder of the mobile device 1 rides on the vehicle 10 to operate the ignition switch installed in the vehicle 10, the main control ECU 4 causes the vehicle to be installed inside the vehicle. The indoor transmitter 2f, the rear transmitter 2g, and the receiver 3 are used to communicate with the portable device 1 to collate ID codes. On the other hand, the steering lock ECU 7 confirms with the main control ECU 4 whether the steering lock may be released. When the matching result of the ID code is OK, the main control ECU 4 responds to the steering lock ECU 7 to permit release of the steering lock. The steering lock ECU 7 unlocks the steering lock based on the response. In this way, control of the steering lock state is performed. At this time, the main control ECU 4 outputs an instruction signal to permit the engine ECU 8 to start up at the same time.

Thus, when the rear part transmitter 2g and the portable device 1 mutually communicate and when the identification code is collated, if the steering lock is released and the engine is allowed to be allowed, baggage such as a bag in the luggage room may be used. With the portable device 1 as one, the vehicle 10 can be used while the portable device 1 is placed in the luggage room, and the convenience of the holder of the portable device 1 can be improved. .

The process shown in FIG. 2 is executed by the main control ECU 4 on the condition that the holder of the mobile device 1 rides on the vehicle 10 and operates the ignition switch installed in the vehicle 10.

The main control ECU 4 determines the open / closed state of the luggage room door 15 on the basis of the detection signal from the door cut switch 15a. Here, when the luggage room door 15 is closed (NO at step S10), the first request signal is transmitted from the vehicle interior transmitter 2f and the rear transmitter 2g (step S20), Waiting for reception of the response signal from the portable device 1. When the response signal is received by the receiver 3 (YES in step S40), the ID code and the registration ID code included in the response signal are matched (compared), and in contrast, OK (a valid mobile device). YES in S50), the steering lock is released and the engine is started (step S60).

On the other hand, when the luggage room door 15 is in an open state (YES in step S10), the vehicle interior transmitter 2f transmits the first request signal, but the second request from the rear transmitter 2g. The signal is transmitted (step S30), and the reception of the response signal from the portable device 1 is awaited. When the response signal is received at the receiver 3 (YES in step S40), the ID code included in this response signal is matched with the registration ID code, and if the check is OK (YES in step S50), the steering lock Is released and the engine is allowed to start (step S60).

On the contrary, when the response signal is not received at the receiver 3 (NO at step S40) or when it is determined that the matching of the ID code and the registration ID code is NG even if the response signal is received (NO at step S50) "), The above process is executed again without granting the release of the steering lock and permitting the engine to start.

The portable device 1 determines whether the request signal is received at the receiver 1a, and if the request signal is received, determines the type of the request signal. And the transmission output of the response signal transmitted from the transmission part 1b is adjusted according to the kind of request signal received.

As shown in Fig. 3, it is judged whether or not the request signal from the transmitters 2a to 2g has been received at the receiver 1a (step S110). When the request signal is received (YES in step S110), the portable device ECU 1c determines whether the type of the request signal received at the receiver 1a, that is, the first request signal or the second request signal. (Step S120).

Here, when it is determined that the received request signal is the first request signal (step S120), the transmission output of the response signal transmitted from the transmission section 1b is adjusted to the first transmission output, and the transmission is instructed (step S130). . On the other hand, when it is determined that the received request signal is the second request signal (step S120), the transmission output of the response signal transmitted from the transmission unit 1b is adjusted to the second transmission output and the transmission is instructed (step S140). .

Therefore, when the luggage room door 15 is in the open state, when the mobile device 1 and the rear part transmitter 2g communicate with each other, a response is transmitted from the transmitting part 1b of the mobile device 1. The transmission output of the signal becomes a second transmission output which is lower than the first transmission output. Thereby, the communication area CA of the rear part transmitter 2g and the portable device 1 is limited to the luggage room R at the rear of a vehicle interior, without expanding to the exterior of a vehicle as shown in FIG.

If there is no transmission output control, even if the door 15 is in an open state, when the transmission output of the transmission part 1b of the portable device 1 is set as the 1st transmission output, it is from the rear part transmitter 2g. The shield of the request signal transmitted is removed. As a result, as shown in Fig. 5, the communication area CA by the rear part transmitter 2g extends to the outside of the vehicle behind the luggage room R further. Therefore, even if the holder of the portable device 1 exists outside the vehicle, mutual communication between the vehicle-side unit and the portable device 1 is established. Then, even if the portable device 1 exists outside the vehicle, the steering lock may be released and the engine may be allowed to be started. For example, it becomes possible for a third party to start the engine when the holder of the mobile device is loading the luggage in the luggage room R or unloading the luggage room R.

In the present embodiment, when the luggage room door 15 is in the open state, the transmission output of the response signal transmitted from the mobile device 1 is lowered, so that the communication area by the rear part transmitter 2g is opened in the luggage room door 15. It is fixed in the luggage room regardless of opening / closing). As a result, the communication area can be prevented from extending out of the vehicle, and the security can be further improved.

<2nd embodiment>

In the second embodiment, the main control ECU 4 has an output adjustment function for adjusting the transmission output of the request signal transmitted from the rear part transmitter 2g.

Specifically, instead of the process of step S20 and step S30 of the flowchart shown in FIG. 2, the process of step S21 and step S31 shown in FIG. 6 is performed. That is, when the door 15 is in the closed state, the main control ECU 4 adjusts the transmission output of the request signal transmitted from the rear transmitter 2g to the first transmission output and instructs the transmission (step). S21). On the other hand, when the door 15 is in the open state, the transmission output of the request signal transmitted from the rear transmitter 2g is adjusted to the second transmission output lower than the first transmission output, and the transmission is instructed (step). S31).

Here, the first transmission output is a transmission output capable of receiving a request signal when the mobile device 1 is in a communication area set by each transmitter 2a to 2g, and the second transmission output is a rear transmitter 2g. In the mutual communication with), it is a transmission output capable of receiving a request signal from the rear transmitter 2g only when the mobile device 1 is in the luggage room.

Further, the processing of the portable device 1 determines whether or not a request signal has been received at the reception unit 1a as shown in Fig. 7, and when it is received (YES in step S210), it responds from the transmission unit 1b. The signal is transmitted (step S220). The transmission output of the response signal transmitted from the transmission section 1b is the first transmission output described in the above embodiment.

Third Embodiment

In the third embodiment, the reception sensitivity of the receiver 1a of the mobile device 1 is adjusted in accordance with the open / closed state of the luggage room door 15. First, the communication procedure in mutual communication between the transmitters 2a to 2g and the mobile device 1 will be described. In addition, in the following description, the case where the portable device 1 communicates with the rear part transmitter 2g is demonstrated as an example.

Before the communication is started, the portable device 1 is in a sleep state. Therefore, the rear part transmitter 2g transmits a start request signal for waking up the portable device 1. The portable device 1 wakes up by this start request signal and returns a first response signal (ACK signal). When the receiver 3 receives the first ACK signal, the outdoor vehicle transmitter 2a includes a different vehicle ID code for each vehicle, and in the case of having the same vehicle ID code, the first transmission request requesting the return of the second ACK signal. Send the signal. When the portable device 1 receives the first transmission request signal, it carries a second ACK signal when it has the same vehicle ID code as the vehicle ID code included in the first transmission request signal.

When the receiver 3 receives the second ACK signal, the rear part transmitter 2g transmits a second transmission request signal that includes a different code for each transmitter and requests transmission of an ID code. The portable device 1 creates a response code using a code included in the second transmission request signal, and transmits a response signal including the response code and the ID code. Also, if the first and second ACK signals are not returned from the portable device 1 when the vehicle outdoor transmitter 2g transmits the start request signal and the first transmission request signal, the portable device 1 exists in the communication area. It assumes that it does not and terminates the communication.

As described above, since the response code is generated by using a different code for each transmitter, the main control ECU 4 determines from which response the portable device 1 transmits a response signal in response to the signal from which transmitter. I can figure it out. In addition, in the above-described communication processing, the first and second transmission request signals correspond to request signals transmitted from the transmitter, and the response signals correspond to response signals transmitted from the portable device 1.

However, as described above, even if a different code is not used for each transmitter, for example, by shifting the timing of transmitting a response signal from each transmitter, the portable device 1 returns a response signal in response to a request signal from which transmitter. It is also possible to grasp. In the above-described communication procedure, the transmission of the first transmission request signal from the vehicle side unit and the transmission of the second ACK signal from the portable device 1 corresponding thereto may be omitted.

When the response signal including the ID code is received from the mobile device 1 in accordance with the above-described communication procedure, the main control ECU 4 causes a predetermined relationship such that the ID code included in the response signal matches the registered ID code. Determine whether or not to satisfy. If the predetermined relationship is satisfied, it is determined that the ID code is collated OK, and if it is not satisfied, it is collated NG of the ID code.

Subsequently, a process for lowering the reception sensitivity of the receiver 1a of the portable device 1 will be described. The main control ECU 4, which is a setting signal transmitting means, selects a start request signal A (first sensitivity setting signal) or a start request signal B (second sensitivity setting signal) from the rear transmitter 2g as a start request signal. Send it. Among these, the start request signal A is a signal transmitted when the luggage room door 15 is in the closed state, and the start request signal B is a signal transmitted when the luggage room door 15 is in the open state. In addition, only the start request signal A is transmitted from the transmitters 2a to 2f.

On the other hand, the portable device 1 adjusts the reception sensitivity of the receiver 1a in accordance with the type of the activation request signal received. When the start-up request signal A is received by the reception section 1a, the portable device ECU 1c serving as the reception sensitivity adjusting means adjusts the reception sensitivity of the reception section 1a to the first reception sensitivity, and the start-up request signal B receives it. If so, the second reception sensitivity is set lower than the first reception sensitivity. In order to adjust this reception sensitivity low, for example, what is necessary is just to reduce the amplification sensitivity of the amplifier of the reception signal in the receiver 1a. Of course, you may reduce reception sensitivity by other techniques.

Here, the first transmission / reception sensitivity is a reception sensitivity capable of receiving a request signal when the mobile device 1 is in a communication area set by each transmitter 2a to 2g, and the second transmission output is a rear transmitter 2g. ), The reception sensitivity is such that the request signal from the rear transmitter 2g can be received only when the mobile device 1 is in the luggage room.

As shown in Fig. 8, the main control ECU 4 determines the open / closed state of the luggage room door 15 based on the detection signal from the door cut lamp switch 15a (step S300). When it is determined that the luggage room door 15 is closed (NO in step S300), the start request signal A is transmitted from the rear part transmitter 2g (step S310). When the first ACK signal is received by the receiver 3 in response to the start request signal A (YES in step S320), the first and second transmission request signals are transmitted from the rear transmitter 2g (step S330). ). Subsequently, when a response signal from the mobile device 1 is received in response to these first and second transmission request signals (YES in step S370), the ID code and registration ID code included in this response signal. In contrast, if the check is OK (YES in step S380), the steering lock is released and the engine is started (step S390).

On the other hand, when it is determined that the luggage room door is open (YES in step S300), the start request signal B is transmitted from the rear part transmitter 2g (step S340). When the first ACK signal is received by the receiver 3 in response to the start request signal B (YES in step S350), the first and second transmission request signals are transmitted from the rear transmitter 2g (step S360). ). Subsequently, when a response signal from the mobile device 1 is received in response to these first and second transmission request signals (YES in step S370), the ID code and registration ID code included in this response signal. When the control is OK, if the control is OK (YES in step S380), the steering lock is released and the engine is started (step S390).

In addition, when the first ACK signal in response to the start request signals A and B is not received (NO in step S320), and when the response signals in response to the first and second transmission request signals are not received (step S320). If NO in S370 or the matching of the ID code and the registered ID code is NG (NO in step S380), the above process is executed again without releasing the steering lock and allowing the engine to start.

In the portable device 1, the process shown in Fig. 9 is executed. First, it is determined whether or not the start request signal has been received by the receiving section 1a (step S400). Until the reception of the start request signal is determined, the portable device 1 executes only functions necessary for reception and reception determination of the start request signal, and other functions remain in a stopped state (sleep state). If it is determined that the start request signal has been received (YES in step S400), the first ACK signal is transmitted from the transmission unit 1b (step S410). Then, it is determined whether the received start request signal was either signal A or signal B (step S420). When the start request signal is determined to be a signal A (A in step S420) by this determination process, the reception sensitivity of the reception unit 1a is set to the first reception sensitivity (step S430). On the other hand, when it is determined that the received start request signal is the signal B (B in step S420), the reception sensitivity of the reception unit 1a is set to the second reception sensitivity (step S440).

Then, it is determined whether or not the first and second transmission request signals have been received at the set reception sensitivity (step S450). When the first and second transmission request signals are received (YES in step S450), the response signals are sent from the transmission unit 1b (step S460), and when they are not received (NO in step S450). The process is executed again.

Accordingly, when the portable device 1 communicates with the rear transmitter 2g, when the luggage room door 15 is in the closed state, the reception sensitivity is adjusted to the first reception sensitivity, and vice versa. When the base room door 15 is in the open state, the reception sensitivity is adjusted to a second reception sensitivity lower than the first reception sensitivity. Thereby, the communication area between the rear part transmitter 2g and the portable device 1 is fixed in the luggage room without expanding out of the vehicle as shown in FIG.

<Other embodiments>

This invention is not limited to embodiment described by the above-mentioned description and drawing, It can variously change and implement.

That is, the communication area is reduced by simultaneously lowering two or more of the transmission output of the transmitter 1b provided in the mobile device 1, the reception sensitivity of the receiver 1a, or the transmission output of the rear transmitter 2g. It is good also as a structure to adjust.

According to the present invention, an on-vehicle device control system, a vehicle side unit, and a portable device can be provided that can improve security.

Claims (8)

The vehicle side unit 100 provided in the vehicle 10 and the portable device 1 communicate with each other by the portable device in response to a request signal transmitted from the vehicle side unit. In the in-vehicle device control system, the in-vehicle device control system that controls the operation of the on-vehicle device based on the communication result, The vehicle side unit 100, A transmitter 2g for selectively transmitting a first request signal and a second request signal as the request signal, A receiver 3 for receiving the response signal; Determination means (4) for determining the open / closed state of the luggage room door (15), The determination means instructs the transmitter to transmit the first request signal when the luggage room door is determined to be closed, and when the luggage room door is determined to be open, the second request signal is sent. And indicating means 4 for instructing, The mobile device 1, A receiver 1a capable of receiving the first and second request signals; A transmitter 1b for transmitting the response signal; And an output adjusting means (1c) for adjusting the transmission output of the response signal transmitted from the transmitting unit to a lower level than when the first request signal is received when the second request signal is received at the receiving unit. Onboard instrument control system. The vehicle-side unit 100 and the portable device 1 provided in the vehicle 10 communicate with each other at least the luggage room of the vehicle in response to the request signal transmitted from the vehicle-side unit. In the in-vehicle device control system, the in-vehicle device control system that controls the operation of the on-vehicle device based on the communication result, The vehicle side unit 100, A transmitter 2g for transmitting the request signal; A receiver 3 for receiving the response signal; Determination means (4) for determining the open / closed state of the luggage room door (15), Output determination means 4 for adjusting the transmission output of the request signal transmitted from the transmitter to be lower than when the luggage room door is in a closed state when the determination means determines that the luggage room door is in an open state; On-vehicle device control system comprising a. The vehicle-side unit 100 and the mobile device 1 provided in the vehicle 10 include at least a luggage room of the vehicle for mutual communication in which the mobile device carries a response signal in response to a request signal transmitted from the vehicle-side unit. In the in-vehicle device control system, which is performed in the communication area and controls the operation of the on-vehicle device based on the communication result, The vehicle side unit 100, A transmitter 2g for transmitting the request signal; A receiver 3 for receiving the response signal; Determination means (4) for determining the open / closed state of the luggage room door (15), The determination means transmits a first sensitivity setting signal from the transmitter to the portable device when it is determined that the luggage room door is in a closed state, and a second sensitivity setting signal when the luggage room door is determined to be in an open state. And setting signal transmitting means (4) for transmitting The mobile device 1, A receiver 1a capable of receiving the request signal and the first and second sensitivity setting signals, A transmitter 1b for transmitting the response signal; When the second sensitivity setting signal is received at the receiver, reception sensitivity adjusting means 1c is provided to adjust the reception sensitivity of the request signal at the receiver to be lower than when the first sensitivity setting signal is received. In-vehicle device control system, characterized in that. In response to the request signal, the portable device 1 carries out mutual communication in the communication area including the luggage room of the vehicle 100 at least, and controls the operation of the on-vehicle device on the basis of the communication result. The vehicle side unit 100 used in the on-vehicle device control system, Selectively requesting, as the request signal, a first request signal for transmitting a response signal to the portable device at a first transmission output, and a second request signal for transmitting a response signal at a second transmission output lower than the first transmission output. A transmitter (2g) to transmit, A receiver 3 for receiving the response signal; Determination means (4) for determining the open / closed state of the luggage room door (15), The determination means instructs the transmitter to transmit the first request signal when it is determined that the luggage room door is closed, and when the luggage room door is determined to be open, And an instruction means (4) for instructing transmission. In response to the request signal, the mobile device 1 carries out mutual communication in which the mobile device 1 carries the response signal in at least a communication area including the luggage room of the vehicle 10, and controls the operation of the on-vehicle device based on the communication result. The vehicle side unit 100 used in the on-vehicle device control system, A transmitter 2g for transmitting the request signal to the luggage room, A receiver 3 for receiving the response signal; Determination means (4) for determining the open / closed state of the luggage room door (15), An output adjusting means for adjusting the transmission output of the request signal transmitted from the transmitter to be lower than when the luggage room door is in a closed state when the determination means determines that the luggage room door is in an open state ( And 4) a vehicle side unit. In response to the request signal, the mobile device 1 carries out mutual communication in which the mobile device 1 carries the response signal in at least a communication area including the luggage room of the vehicle 10, and controls the operation of the on-vehicle device based on the communication result. The vehicle side unit 100 used in the on-vehicle device control system, A transmitter 2g for transmitting the request signal; A receiver 3 for receiving the response signal; Determination means (4) for determining the open / closed state of the luggage room door (15), When the determination means determines that the luggage room door is closed, the transmitter transmits a first sensitivity setting signal for setting the reception sensitivity of the request signal to the first reception sensitivity from the transmitter to the portable device, And a setting signal transmitting means (4) for transmitting a second sensitivity setting signal for setting to a second reception sensitivity lower than the first reception sensitivity when it is determined that the known room door is in an open state. . A portable device 1 which communicates with the vehicle-side unit 100 in a communication area including a luggage room of the vehicle 10, A receiving unit 1a which receives from the vehicle side unit a first request signal transmitted when the luggage room door 15 of the vehicle is in a closed state and a second request signal transmitted when the luggage room door is in an open state; , A transmitter 1b which transmits a response signal to the vehicle side unit in response to the first and second request signals; And an output adjusting means (1c) for adjusting the transmission output of the response signal transmitted from the transmitting unit to a lower level than when the first request signal is received when the second request signal is received at the receiving unit. Mobile. A portable device 1 which communicates with the vehicle-side unit 100 in a communication area including a luggage room of the vehicle 10, The first sensitivity setting signal and the luggage room door that are transmitted when the luggage room door of the vehicle is closed, the same as the request signal transmitted from the vehicle side unit, and are transmitted from the vehicle side unit. Receiving unit 1a capable of receiving a second sensitivity setting signal transmitted when A transmitter 1b for transmitting a response signal in response to the request signal; When the second sensitivity setting signal is received at the receiver, reception sensitivity adjusting means 1c is provided to adjust the reception sensitivity of the request signal at the receiver to be lower than when the first sensitivity setting signal is received. Characterized in that the mobile device.

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