JP3438498B2 - Vehicle communication device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular communication device, and more particularly to a vehicular communication device used for centrally controlling loads such as headlamps and power window motors mounted on an automobile.

[0002]

2. Description of the Related Art In recent years, as automobiles have become more multifunctional, a system for centrally controlling each function has been adopted. As such a control system, the LA in the vehicle has been conventionally used.
A vehicle communication device called N is often used. Such a vehicle communication device is disclosed in Japanese Patent Laid-Open No. 8-84376.
Those described in Japanese Patent Publication are known.

This system has only one master station and a plurality of slave stations, and the master station periodically performs data communication with each slave station to control the function of each slave station. The control signal is transmitted. In particular, each slave station identifies whether or not each function controlled by each slave station is operable and transfers an identification signal to the master station, while the master station uses the vehicle based on the identification signal from each slave station. The system specifications are determined, and the control specifications for each slave station are determined based on the determination result. In such a vehicle communication device, each slave station identifies an individual functional specification of the vehicle, and the identification result is determined by the master station. Therefore, there is an advantage that the same master station can be used for vehicle models having any specifications.

[0004]

As described above, in the conventional vehicle communication device, the individual specifications are identified on the slave station side prior to the determination of the control specifications by the master station. However, since the communication port of the master station is generally limited in the number of connections, when the slave station side has a wide variety of control specifications, it is difficult to comply with each control specification.

Further, when changing the optional parts connected to the outside of the slave station side, technical work such as harness connection has occurred. Furthermore, in order to express individual vehicle specifications on the slave station side, it was necessary to classify the specifications of optional parts to be attached. Furthermore, if the vehicle specifications are wide-ranging, the types of optional parts of the slave station will increase, and as a result, incorrect installation of optional parts will increase on the production line, and the control specifications of the master station will become the original vehicle specifications. There was a problem of causing incompatibility.

The present invention has been made in view of the above,
The purpose is to add new vehicle specification information corresponding to multiple vehicle specifications, change the control specifications of the master station easily, and configure the master station and slave stations. An object of the present invention is to provide a vehicular communication device that can be achieved by one simple configuration.

[0007]

[0008]

Means for Solving the Problems The invention according to claim 1,
In order to solve the above problems, the master station has only one master station and a plurality of slave stations, and the master station periodically performs data communication with each slave station to control the function controlled by each slave station. the vehicle communication device transmits a control signal, separately from the the master station and the slave station includes a transmitter for transmitting a specification information representing the vehicle specifications, one of the slave stations are transmitted from the transmitter Receiving specification information and the received specification information to the parent
And a first communication means for transferring to the station, the master station, before
A second communication means for receiving the specification information transferred from the slave station, a specification determining means for determining the specification of the vehicle based on the received specification information, and a control specification for each slave station based on the determination result. And a control specification determining means for determining.

[0009] According to a second aspect of the invention, for solving the above problems, the transmitter includes a storage means for storing a unique identification code for unlocking an individual vehicle and a vehicle specification code representing the vehicle specification And a transmission means for adding the identification code and the vehicle specification code to a radio wave signal and transmitting the radio wave signal.

In order to solve the above-mentioned problems, the transmitter according to the third aspect of the present invention stores the vehicle specification code indicating the vehicle specification, and the transmitter adds the vehicle specification code to a radio signal and transmits the radio signal. The gist is to have a transmission means.

[0011] The invention of claim 4, wherein, in order to solve the above problems, and a sole master station and a plurality of slave stations, the master station performs a periodic data communication with the slave station In a vehicle communication device that transmits a control signal for controlling a function controlled by each slave station, the master station and the slave station are separately connected to the master station.
Diagnosis for diagnosing various functions installed in the vehicle
Machine and specification information representing vehicle specifications are input to the diagnostic machine.
An input device, and the master station is input to the diagnostic machine.
The gist of the present invention is to have specification determining means for determining the specifications of the vehicle based on the specified specification information, and control specification determining means for determining the control specifications for the slave stations based on the result of the determination.

[0012]

[0013]

Effects of the Invention According to the present invention described in claim 1, apart from the master station and the slave station, providing a transmitter for transmitting specification information representing the vehicle specifications, one of the slave stations, transmitted from the transmitter While receiving the specified specification information and transferring the received specification information to the master station side, the master station receives the specification information transferred from the slave station side and determines the specifications of the vehicle based on the received specification information However, by determining the control specifications for each slave station based on this judgment result, new vehicle specification information corresponding to multiple vehicle specifications can be added, and the control specifications of the master station can be simplified. Can be changed .

According to the second aspect of the present invention, the transmitter stores the unique identification code for unlocking the individual vehicle and the vehicle specification code indicating the vehicle specification. Since the vehicle specification code is added to the radio signal and transmitted, the vehicle specification can be transmitted.

According to the third aspect of the present invention, the transmitter stores the vehicle specification code indicating the vehicle specification and adds the vehicle specification code to the radio signal for transmission. Vehicle specifications can be sent.

Further, according to the present invention as set forth in claim 4 , the master station is connected to a diagnostic machine for diagnosing various functions mounted on the vehicle, and the specification information indicating the vehicle specification is input from the input device. Is entered, the specification of the vehicle is judged based on the entered specification information, and the control specification for each slave station is decided based on this judgment result. information can be newly added, also, it is possible to easily change the control specification of the master station
It

As a result, even when there are various vehicle specifications as in the past, the number of types of option parts of the slave station does not increase, and as a result, it is possible to prevent erroneous installation of option parts on the production line. It is possible to prevent the control specifications of the master station from being incompatible with the original vehicle specifications.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) FIG. 1 is a diagram showing a system configuration of a vehicle communication device 1 according to a first embodiment of the present invention. FIG. 2 (a) is a transceiver 15 inside a vehicle. 2B is a block diagram of the transponder 19 inside the immobilizer key 11. FIG.

In FIG. 1, the immobilizer key 11 is a key having a transponder 19 for transmitting and receiving data to and from the vehicle antenna 13. The transponder 19 is shown in FIG.
As shown in (b), a charge conversion unit 19b for accumulating electric waves from the vehicle antenna 13 received by the key antenna 19a as electric charges in an internal capacitor, a unique identification code for unlocking an individual vehicle, and vehicle specifications. It is composed of an EEPROM 19d for storing the vehicle specification code shown therein, and a control section 19c for controlling the reading of the identification code and the vehicle specification code and the transmission / reception of radio waves.

In FIG. 1, the transceiver 15 transmits and receives radio waves to and from the immobilizer key 11 via the vehicle antenna 13. The transceiver 15 is, as shown in FIG.
A transmission / reception switch 15a for switching transmission / reception of radio waves, an oscillator 15b for outputting a carrier wave signal of transmission radio waves, a capacitor 15c for converting the reception radio waves into electric charges and accumulating them, and a demodulator 15d for demodulating the reception radio waves and outputting reception data. When,
It is composed of a transmission control unit 15e for controlling the timing of radio wave transmission.

The key cylinder 27 is an AC which is turned on when the immobilizer key 11 is inserted and operated to the accessory position.
C switch 29a and IGN switch 29b that is turned on when the immobilizer key 11 is operated to the ignition position.
And an ST switch 29c that is turned on when the immobilizer key 11 is operated to the starter position.

Immobilizer control unit 17
(Hereinafter, referred to as Immobility C / U) determines whether the identification code output from the transceiver 15 matches a code registered in advance. Immobili C / U17 has ACC
The switch 29a, the IGN switch 29b, and the ST switch 29c are connected. The immobilizer C / U 17 sends an engine start signal to, for example, an engine control unit (not shown) to start the engine only when the determination results match and the ST switch 29c is turned on. In addition, the immobilizer C / U17 can be used only when the above determination results match and the ST switch 29c is turned on.
The master station 3 receives the vehicle specification code received from the immobilizer key 11.
Output to 3.

The master station 33 is connected to the slave stations 35A, 35B, and 35C via the multiplex transmission line 43, and is also connected to the immobilizer C / U17. The parent station 33 is Imobi C /
A specification determination unit 37a that determines the specifications of the vehicle based on the vehicle specification code output from U17, and the slave stations 35A, 35B, 3 that specify the specifications of the vehicle based on the determination result.
Data communication is periodically performed via the multiplex transmission line 43 between the control specification determination unit 37b that determines the control specifications so that the 5C is compatible, and the communication unit provided in each slave station according to the determination result. The communication unit 39 transmits a control signal for controlling the function of each slave station. The specification determining unit 37a and the control specification determining unit 37b are set to C
You may comprise by the control part 37 which consists of PU, ROM, and RAM.

The slave station 35A has a communication section 41a for communicating with the master station 33 and is arranged on the driver side. The communication unit 41a is connected to the power window switch lighting LED. In addition, a tamper switch S1 that detects that the door key cylinder on the driver side has been pulled out, a lock switch S2 that operates when locking the door, and an unlock switch S3 that operates when unlocking the door.
Connected to.

The slave station 35B has a communication section 41b for communicating with the master station 33 and is arranged on the passenger seat side. The communication unit 41b includes a tamper switch S4 that detects that the passenger side door key cylinder has been pulled out, a lock switch S5 that operates when locking the door, and an unlock switch S6 that operates when unlocking the door. Connected to.

The slave station 35C has a communication section 41c for communicating with the master station 33. The communication unit 41c is connected to the door lock actuator 47 and a drive unit 45 for driving the anti-theft horn 49. Further, it is connected to door switches S7 to S10 for detecting whether each door of the vehicle is actually closed or opened.

Next, FIG. 3 (a) is a diagram showing the bit array of the vehicle specification code, and FIG. 3 (b) is a table showing the contents of the bits of the vehicle specification code. The vehicle specification code stored in the EEPROM 19d in the immobilizer key 11 will be described in detail with reference to FIG. As shown in FIG. 1, a vehicle specification code is stored in the EEPROM 19d in the immobilizer key 11, for example, in the form of 8-bit data. As shown in FIG. 3A, the effective bit of the vehicle specification code is, for example, a 5-digit binary number represented by B4 to B0.

As shown in FIG. 3 (b), B4 is a bit indicating the presence / absence of a door lock interlocking with the passenger's seat knob. The door lock of the passenger's seat is interlocked with ON / OFF operation of the door lock in the driver's seat. Represents whether or not to drive. B
Reference numeral 3 is a bit indicating whether or not there is a vehicle speed interlocking door lock, and indicates whether or not to lock each door when the vehicle speed V becomes V ≧ 25 km / h.

B2 is a bit indicating the presence or absence of the anti-theft system. The anti-theft system uses the lock switch S of the slave station A.
When the door on the driver's side opens even though 2 is ON, the anti-theft circuit operates due to the interlock with the switch S7 of the slave station C, and the anti-theft horn 49 operates to issue an alarm. , Indicates whether or not to activate this anti-theft circuit. B1 and B0 are 2 bits indicating the control specification of the room lamp timer. The specification A represents a specification in which the room lamp is turned off 15 seconds after the door is closed. In addition, the specification B represents a specification in which the room lamp is turned off 30 seconds after the door is closed. Further, the specification C represents a specification in which the room lamp is immediately turned off when the door is closed.

Next, the operation of the vehicle communication device 1 according to the first embodiment of the present invention will be described with reference to FIGS. Now, in a vehicle production plant, an identification code unique to the vehicle is registered for the first time in a vehicle communication device mounted on the vehicle. At this time, at the same time when the identification code is registered, the vehicle specification code indicating the vehicle specification is sent to the master station 33.
To determine the vehicle specifications. First, as shown in FIG. 1, when the immobilizer key 11 is inserted into the key cylinder 27, a radio wave of, for example, 120 kHz is transmitted from the vehicle antenna 13 to the immobilizer key 11. At the same time, the power supply switch 21 is closed in response to the contact between the immobilizer key 11 and the key cylinder 27.

As shown in FIG. 2A, this radio wave is received by the key antenna 19a, rectified inside the charge conversion section 19b, and stored as an electric charge in the internal capacitor. The charge conversion unit 19b converts the charges accumulated in the internal capacitor into a voltage and supplies the voltage to the control unit 19c and the power supply terminal B of the EEPROM 19d via the power supply switch 21. First, the control unit 19c controls the EEPROM 19
The identification code and the vehicle specification code are sequentially read from d and sequentially sent to the charge conversion unit 19b. Charge conversion unit 1
9b sequentially adds the identification code and the vehicle specification code to the radio signal and transmits it from the key antenna 19a.

Next, as shown in FIG. 1, the vehicle antenna 1
The radio wave received by 3 is sequentially demodulated by the demodulator 15d into an identification code and a vehicle specification code, and is output to the immobilizer C / U 17. The immobilizer C / U 17 registers the received identification code in the internal RAM. Next, the Immobilizer C / U 17 sets the received vehicle specification code to the master station 33.
It is handed over to the internal specification judgment unit 37a. Next, the specification determination unit 3
At 7a, the received vehicle specification code is temporarily registered in the internal RAM, and then the bit state set in this vehicle specification code is checked to determine the specification of the vehicle.

Next, in the control specification determining section 37b, the slave stations 35A and 35A are set to the specifications of the vehicle based on the result of this judgment.
Control specifications are determined so that B and 35C are compatible. Until the master station 33 determines the control specifications in this way,
As a predetermined default specification, for example, B4 to B0 = (0,0,0,0,0) may be used. Here, the specification determination unit 37a
When the vehicle specification code registered in is, for example, B4 to B0 = (1,0,0,0,0), the door lock ON / OF of the driver's seat is ON.
The door lock of the passenger seat can be driven in conjunction with F operation.

That is, when the unlock switch S3 provided on the driver's seat door is operated by the driver, the slave station 35
The master station 33 from the communication unit 41a of A through the multiplex transmission line 43.
The operation information of the unlock switch S3 is transmitted to the communication unit 39. Next, in the control specification determination unit 37b of the master station 33, it is determined in advance that the door lock of the passenger seat is driven in conjunction with ON / OFF operation of the door lock of the driver's seat. In response to the operation information from 35A, this operation information is output to the slave station 35B via the communication unit 39 and the multiplex transmission line 43.

In the slave station 35B provided in the passenger seat, the door lock actuator (not shown) is driven in accordance with the received operation information to operate the passenger door in the unlocked state. In this way, the master station 33 and the slave station 35A
Separately from ~ 35C, prepare an immobilizer key 11 as a transmitter for transmitting a vehicle specification code indicating a vehicle specification, and the master station 33 sends the vehicle specification code transmitted from the immobilizer key 11 to the transceiver 15 and the immobilizer C / U17. Received via
The specification of the vehicle is determined based on the vehicle specification code received by the specification determining unit 37a, and the control specification determining unit 37b
Based on this determination result, each slave station 35A to 35C
Since the control specification for the master station is determined, it is possible to newly add a vehicle specification code corresponding to a plurality of vehicle specifications, and it is possible to easily change the control specification of the master station 33. , Master station 33 and slave stations 35A to 35C
Each of the configurations can be achieved by one simple configuration.

Further, the immobilizer key 11 stores the unique identification code for unlocking the individual vehicle and the vehicle specification code indicating the vehicle specification in the EEPROM 19d, and adds the identification code and the vehicle specification code to the radio signal. Therefore, the vehicle specifications can be transmitted.

(Second Embodiment) FIG. 4 is a diagram showing a system configuration of a vehicle communication device 50 according to a second embodiment of the present invention. In this embodiment, the slave station 35
The configurations of A to 35C are the same as the configurations shown in FIG. 1, but the master station 33, the keyless transmitter 51, and the receiver 53 are different. In FIG. 4, the master station 33 receives the locking / unlocking code and the vehicle specification code from the receiver 53 via the multiplex transmission line 43 and the communication section 39.

The keyless transmitter 51 is usually carried by a driver. The keyless transmitter 51 includes a storage unit 51a that stores a unique identification code and a vehicle specification code that represents a vehicle specification, a switch 51b that locks or unlocks a vehicle door, and an identification code and an unlock code for a radio signal. And a transmission unit 51c for adding a vehicle specification code and outputting from the antenna 51d.

The receiver 53 mounted on the vehicle side receives an antenna 53a for collecting radio waves around the vehicle and a radio wave signal transmitted from the transmitter 51 carried by the driver to demodulate each code. Unit 53b and receiving unit 53c
When the identification code output from the device matches the code registered in advance, the control unit 53c that delivers the vehicle specification code that is continuously received to the communication unit 53d, and the communication that outputs the received vehicle specification code to the master station 33 It is composed of a section 39 and When the identification code output from the receiving unit 53b matches the pre-registered code, the control unit 53c opens or closes a vehicle door (not shown) in accordance with the lock / unlock code subsequently output. In order to lock, the lock / unlock code of the vehicle door is output to the master station 33 via the communication unit 53d. Further, since the receiver 53 has the communication unit 53d for the master station, it functions as a slave station.

Next, the operation of the vehicle communication device 50 according to the second embodiment of the present invention will be described with reference to FIGS. 3 and 4. The storage unit 51a of the keyless transmitter 51
Stores a vehicle specification code as shown in FIG. Now, in a vehicle production plant, an identification code unique to the vehicle is registered for the first time in a vehicle communication device mounted on the vehicle. At this time, simultaneously with the registration of the identification code, the vehicle specification code indicating the vehicle specification is registered in the master station 33 to determine the vehicle specification.

First, as shown in FIG. 4, when the switch 51b of the keyless transmitter 51 is pressed, the transmitter 51c
The identification code, the locking / unlocking code, and the vehicle specification code are sequentially read from the storage unit 51a, each code is added to the radio signal, and sequentially output from the antenna 51d. next,
The radio signal received by the antenna 53a is sequentially demodulated by the receiving unit 53b into an identification code, a locking / unlocking code, and a vehicle specification code, and is output to the control unit 53c. The control unit 53c registers the received identification code in the internal RAM and uses it as a reference for subsequent determination. Next, the control unit 53c passes the received vehicle specification code to the communication unit 53d, and from the communication unit 53d to the communication unit 39 in the master station 33 via the multiplex transmission line 43.

Next, the communication section 39 in the master station 33 delivers the vehicle specification code received via the multiplex transmission line 43 to the specification judging section 37a. Next, in the specification determination unit 37a,
The received vehicle specification code is temporarily registered in the internal RAM, and then the bit state set in this vehicle specification code is checked to determine the specification of the vehicle. Next, the control specification determination unit 37b determines the control specification based on the result of the determination so that the slave stations 35A, 35B, 35C conform to the specifications of the vehicle. It should be noted that, until the master station determines the control specifications in this way, the predetermined default specifications may be used in the same manner as in the first embodiment.

If the vehicle specification code registered in the specification determining section 37a is, for example, B4 to B0 = (0,1,0,0,0), the door is linked with the vehicle speed. The lock actuator can be driven. That is, the control unit 37
Is monitored by inputting a vehicle speed signal (not shown)
When the vehicle speed V becomes V ≧ 25 km / h, the control specification determination unit 37b of the master station 33 has previously determined to drive the door lock in association with the vehicle speed. In response to
This operation information is output to each slave station via the communication unit 39 and the multiplex transmission line 43.

For example, in the slave station 35B provided in the front passenger seat, the door lock actuator (not shown) of the front passenger seat is driven according to the received operation information to operate the front passenger door in the locked state. In this way, the master station 33 and the slave stations 3
In addition to 5A to 35C, a keyless transmitter 51 as a transmitter for transmitting a vehicle specification code indicating a vehicle specification is prepared, and one of the slave stations is a vehicle specification code indicating a vehicle specification transmitted from the keyless transmitter 51. Is received and the received vehicle specification code is transferred to the master station 33 side by the communication unit 53d, while the communication unit 39 of the master station 33 receives the vehicle specification code transferred from the slave station side, and the received vehicle specification code is received. The vehicle specification corresponding to a plurality of vehicle specifications is determined by the specification determination unit 37a based on the above-mentioned determination, and the control specification determination unit 37b determines the control specifications for each slave station based on the determination result. Information can be newly added, the control specifications of the master station 33 can be easily changed, and further, the master station 33 and the slave stations 35A to 3A.
Each of the 5C configurations can be achieved with one simple configuration.

Further, the keyless transmitter 51 stores the unique identification code for unlocking the individual vehicle and the vehicle specification code indicating the vehicle specification in the storage section 51a, and the transmission section 51a.
Since the identification code and the vehicle specification code are added to the radio wave signal in c and are transmitted, the vehicle specification code can be transmitted. A transmitter may be provided in place of the keyless transmitter 51, a vehicle specification code indicating vehicle specifications may be stored in the transmitter, and this vehicle specification code may be added to a radio signal and transmitted. In this case, Can also send the vehicle specification code.

(Third Embodiment) FIG. 5 is a diagram showing a system configuration of a vehicle communication device 60 according to a third embodiment of the present invention. In this embodiment, the master station 3
3. The configurations of the slave stations 35A to 35C are the same as the configurations shown in FIG. 1, and only the failure diagnosis device 61 is different.
In FIG. 5, a failure diagnosis device 61 is for diagnosing various functions mounted on the vehicle, and is usually used in a vehicle production plant, a dealer, or the like.

As shown in FIG. 6, the vehicle has an ECM (Engi
ne Control Module) 65 is installed. ECM6
5 is connected to a failure diagnosis device 61 via a diagnosis cable 71. The failure diagnosis device 61 is connected to the master station 33 of the vehicle communication device 60 via a diagnosis cable 73. In FIG. 6, the master station 33
It is assumed that each slave station (not shown) is connected. Figure 6
In the above, the ECM 65 is for performing various controls of an engine (not shown) mounted on the vehicle,
Sensor information is collected from various sensors 67 such as a crank angle sensor capable of detecting the engine speed, a water temperature sensor capable of detecting the engine water temperature, and a throttle sensor capable of detecting the throttle opening, and a fuel injection injector based on the information. Control for determining the control amount of various actuators 69 such as an idle rotation adjusting valve and a radiator fan,
Calculate and judge. The ECM 65 is connected to the failure diagnosis device 61 via a diagnosis cable 71. In this example, the communication medium is a wire type such as an electric wire or an optical cable, but may be a wireless type such as radio waves or infrared rays.

The failure diagnosing device 61 has an I / O interface 61a for inputting / outputting with the outside and a C for performing control, calculation and judgment according to a control program and control data.
A PU 61b, a RAM 61c having a rolling RAM for collecting and storing control data and sensor information from various sensors 67, a ROM 61d for storing a diagnostic program and control data, and a timer 61e for measuring elapsed time. There is.

The input device 75 is used by the operator to select a diagnostic system / diagnostic mode and to input diagnostic start / end in order to control a diagnostic program incorporated in the failure diagnostic device 61. It consists of a screen etc. The touch screen is also used as a display unit for inputting a failure diagnosis item, recording start, diagnosis end, and the like, and for displaying a diagnosis result. In the present embodiment, the identification code unique to the vehicle and the vehicle specification code indicating the vehicle specification are input from the input device 75. The display device 77 displays the output content from the failure diagnosis device 61. Also, the output device 79
Is a printer for arbitrarily printing out diagnostic results, various sensor information, and the like.

Next, referring to FIGS. 3, 5 and 6, the vehicle communication device 6 according to the third embodiment of the present invention.
The operation of 0 will be described. Now in the vehicle production plant,
It is assumed that the identification code unique to the vehicle is first registered in the vehicle communication device 60 mounted on the vehicle. At this time, simultaneously with the registration of the identification code, the vehicle specification code indicating the vehicle specification is registered in the master station 33 to determine the vehicle specification.

First, as shown in FIG. 6, an identification code unique to the vehicle and a vehicle specification code representing vehicle specifications are sequentially input from the input device 75 through the I / O interface 61a and stored in the RAM 61c. Next, CPU6
The 1b outputs an identification code to the ECM 65 via the I / O interface 61a and the diagnostic cable 71 to output an internal R
The ECM 65 is operated only when an identification code that matches the identification code of the vehicle stored in the internal RAM of the ECM 65 is input.

Next, the CPU 61b in the failure diagnosis device 61.
Is an I / O interface 61a and a diagnostic cable 73
The vehicle specification code is delivered to the specification determining section 37a in the master station 33 in the vehicle 63 via the. Next, the specification judging unit 37a temporarily registers the received vehicle specification code in the internal RAM, and then checks the bit states set in this vehicle specification code to judge the specification of the vehicle. Next, the control specification determination unit 37b determines the control specification based on the result of the determination so that the slave stations 35A, 35B, 35C conform to the specifications of the vehicle. It should be noted that, until the master station determines the control specifications in this way, the predetermined default specifications may be used in the same manner as in the first embodiment.

Here, when the vehicle specification code registered in the specification judging section 37a is, for example, B4 to B0 = (0,0,1,0,0), the above-mentioned antitheft system is driven. can do.

[0054] In other words, anti-theft system, that the lock switch S2 of the slave station 35A is turned ON, the slave station 35A
The switch state is transmitted from the communication unit 41a of the above to the communication unit 39 of the master station 33 via the multiplex transmission line 43. On the other hand, when the switch S7 of the slave station C attached to the driver's seat door is closed, the operation information is transmitted from the communication section 41c of the slave station 35c to the communication section 39 of the master station 33 via the multiplex transmission line 43. It

Next, in the control specification determination unit 37b of the master station 33, since it is determined in advance that the anti-theft system should be driven, the switch state from the slave station 35A and the slave station 3 are determined.
The alarm information is transmitted to the communication unit 3 in response to the operation information from the 5C.
9. Output to the slave station 35C via the multiplex transmission line 43. Next, the communication unit 41C of the slave station 35C receives the alarm information and drives the anti-theft horn 49 from the drive unit 45.
As a result, the anti-theft horn 49 is activated to give an alarm.

As described above, the master station 33 is connected to the failure diagnosis device 61 for diagnosing various functions mounted on the vehicle, and outputs the vehicle specification code indicating the vehicle specification output from the failure diagnosis device 61. The specification determining unit 37a determines the specifications of the vehicle based on the input vehicle specification code, and each of the slave stations 35A to 35C based on the determination result.
Since the control specification determining unit 37b determines the control specification for the vehicle, it is possible to newly add vehicle specification information corresponding to a plurality of vehicle specifications and easily change the control specification of the master station. Further, the configurations of the master station and the slave station can be achieved by one simple configuration.

[Brief description of drawings]

FIG. 1 is a diagram showing a system configuration of a vehicle communication device 1 according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a transceiver 15 inside a vehicle (a).
2 is a block diagram (b) of the transponder 19 inside the immobilizer key 11. FIG.

FIG. 3 is a diagram showing a bit arrangement of a vehicle specification code (a).
3 is a table (b) showing the contents of the bits of the vehicle specification code.

FIG. 4 is a diagram showing a system configuration of a vehicle communication device 50 according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a system configuration of a vehicle communication device 60 according to a third embodiment of the present invention.

FIG. 6 is a diagram showing a system configuration of a vehicle communication device 60.

[Explanation of symbols]

11 immobility 15 transceiver 17 Imobi C / U 33 Master station 33 35A-35C Each slave station 37a Specification judgment unit 37b Control specification determination unit

Claims (4)

(57) [Claims] 1. A control signal having a sole master station and a plurality of slave stations, the master station periodically performing data communication with each slave station and controlling a function controlled by each slave station. the vehicle communication device for transmitting, separately from said parent station and the slave station includes a transmitter for transmitting a specification information representing the vehicle specifications, one of said slave station, specification transmitted from the transmitter Receiving means for receiving information and first communication for transferring the received specification information to the master station
Means for receiving the specification information transferred from the slave station , the second communication comprising:
And determine the specifications of the vehicle based on the method and the specification information received
And a control specification determining unit that determines a control specification for each slave station based on the result of the determination. 2. The transmitter includes a unique identification code for unlocking an individual vehicle and a vehicle identification code.
Storage means for storing a vehicle specification code indicating
The identification code and vehicle specification code of
Claims, characterized in that a transmission means for transmitting Te
1. The vehicle communication device according to 1. Wherein the transmitter, according to claim characterized in that it has storage means for storing a vehicle specification code representing the vehicle specifications, and transmission means for transmitting by adding the vehicle specification code in the radio signal 1 The vehicle communication device described. 4. A master station having a sole master station and a plurality of slave stations
Periodically performs data communication with each slave station
For vehicles that send control signals to control functions controlled by
In the communication device, the master station and the slave station are separately connected to the master station and
A diagnostic machine that diagnoses various functions installed in the vehicle and
An input device for inputting the specification information indicating the condition to the diagnostic machine,
Has the master station, the car on the basis of the specification information entered in the diagnostic apparatus
Specification judging means for judging both specifications and control specifications for each slave station based on the judgment result
And a control specification determining means for controlling the vehicle communication device.