JP2000100271A - On-vehicle electronic part control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently utilize a substitute switch to a trouble of an auxiliary function switch based on the will of a user. SOLUTION: By recognizing it a trouble of switch panels 11, 12 exists or not in ECUs 13, 14, the trouble is informed to all the other switch panels 11, 12 from a trouble switch informing means in the case of trouble to function as a substitute switch for the troubled switch panel when emergency switches 15, 16 are operated in switch panels 11, 12. An operator operates the emergency switch 15, 16 based on the operator's will to function the switch panel 11, 12 as the substitute switch, thereby the substitute switch is utilized based on the operator's will.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle electronic component control system for controlling operation of on-vehicle electronic components connected by multiplex communication.

[0002]

2. Description of the Related Art Generally, wiring connection between electronic components having auxiliary functions other than the main function of a vehicle in a vehicle is performed by connecting a single cable C as shown in FIG. Many electronic components 1, 2, 4, 5,... Are connected by a bus, and signals between these electronic components 1, 2, 4, 5,. That is, for example, when the air conditioner motor 3 is controlled by an air control (hereinafter, abbreviated as “air conditioner”) switch 1 disposed in an instrument panel of an automobile, a control signal from the air conditioner switch 1 is transmitted to the cable C. The air conditioner ECU 2 controls the driving of the air conditioner motor 3 when the predetermined code in the control signal is recognized by the air conditioner electronic control device (hereinafter referred to as “air conditioner ECU”) 2. Alternatively, when the window is opened / closed by the power window, a control signal from the door switch 4 is output to the cable C, and a power window electronic control unit (hereinafter, referred to as a “door ECU”) 5 includes a predetermined signal in the control signal. When this code is recognized, the door ECU 5 controls the drive of the door motor (power window motor) 6 (conventional example 1).

[0003]

When the air conditioner motor 3 is controlled by the air conditioner switch 1, for example,
If the air conditioner switch 1 fails, the air conditioner ECU 2
Does not receive any control signal from the cable C, so that the air conditioner motor 3 is not driven at all. When controlling the door motor 6 with the door switch 4,
Similarly, when the door switch 4 fails, the door motor 6
Is not performed at all.

In order to solve such inconveniences, for example, in Japanese Patent Application Laid-Open No. Hei 8-181706 (prior art 2), when an input unit necessary for controlling auxiliary functions such as an air conditioner or a power window fails, another auxiliary function ECU 2 is used. , 5 perform an abnormality determination, and substitute the other auxiliary function ECUs 2, 5 and corresponding switches 1, 4 based on the information.
In some cases, auxiliary function control related to a failure can be continued.

That is, the air conditioner ECU 2 and the door ECU 5 diagnose failures of switches such as the air conditioner switch 1 and the door switch 4. For example, when the air conditioner ECU 2 detects a failure of the door switch 4, the door motor 6
The air conditioner switch 1 is used as a switch for driving and controlling the door motor 6, and the air conditioner switch 1 gives an operation instruction to the air conditioner ECU 2, and the air conditioner ECU 2 gives an operation instruction to the door ECU 5 to drive and control the door motor 6. Alternatively, if the door ECU 5 determines that the air conditioner switch 1 is out of order, the door switch 4 is substituted for the air conditioner control. An operation instruction is given from the ECU 5 to the air conditioner ECU 2 to drive and control the air conditioner motor 3.

However, in the method of the prior art 2, another switch 4 (1) is used instead of the failed switch 1 (4).
The operation is performed by using the ECU 5 and the switching is performed by the ECU 5 (2).
However, there is a disadvantage that the function of the switch 4 (1) is changed without permission of the user.

That is, even if the air conditioner switch 1 has a power window function as described above, the user does not notice the fact and intends to operate and control the air conditioner motor 3 using the air conditioner switch 1. The power window operation may be performed without permission. Conversely, when the user intends to perform the power window operation from the door switch 4, the air conditioner motor 3 may be operated, and the rear differential may operate arbitrarily, causing a situation in which the battery is consumed.

[0008] Incidentally, as an auxiliary function in an automobile,
In addition to the above-described air conditioner and power window, there are head lamp on / off, wiper, and the like. However, if a method as in Conventional Example 2 is adopted, for example, an auxiliary function device such as a head lamp or a wiper may be inadvertently operated. Inadvertent passing may cause inconvenience to the oncoming vehicle, or the wiper may operate on its own in fine weather to scratch the windshield, which may cause undesirable results.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a vehicle-mounted electronic component control system capable of efficiently utilizing a substitute switch for a failure of an auxiliary function switch based on a user's arbitrariness.

[0010]

Means for Solving the Problems In order to solve the above problems,
According to the first aspect of the present invention, a plurality of electronic control devices for driving various loads, and a plurality of switch panels associated with each of the electronic control devices are connected to the same cable, An inter-vehicle electronic component control system in which these intercommunications are performed by multiplex communication, wherein each of the switch panels or the electronic control devices recognizes whether or not each switch panel has a failure,
If any one of the switch panels has a failure, failure switch notification means for notifying the failed switch panel to all other switch panels is provided, and each of the switch panels is provided with a notification from the failure switch notification means. A substitute switch specifying circuit for storing which switch panel the faulty switch is, and an electronic control unit associated with the faulty switch panel in place of the faulty switch panel. An emergency switch that instructs the switch panel to function as a substitute switch, wherein each of the switch panels, when the emergency switch is operated on the switch panel, switches the faulty switch panel stored in the substitute switch specifying circuit. It functions as a substitute switch.

According to a second aspect of the present invention, in the substitute switch specifying circuit in each of the switch panels, a data table relating to all switch operations of all other switch panels is stored in advance, and the operation of the emergency switch is performed. When there is, the substitute switch specifying circuit of the switch panel checks the data table and functions the switch panel as the substitute switch.

According to a third aspect of the present invention, each of the electronic control units calls one switch panel associated with the electronic control unit and issues a call for instructing to check a failure state of the switch panel. Means, a failure state storage means for recognizing and storing a failure state of the switch panel based on a signal output from the one switch panel in response to a call from the calling means, and the failure state storage means The faulty switch notifying means for notifying all the switch panels that the one switch panel is faulty when it is recognized that the one switch panel is faulty according to the recognition result in the above, Operating function determining means for determining a function operated with respect to an operation signal from a switch panel or another switch panel functioning as the substitute switch; Based on the results discriminated by the discriminating means in which and a driving means for driving and controlling the load.

[0013]

FIG. 1 is a block diagram showing a vehicle-mounted electronic component control system according to one embodiment of the present invention. As shown in FIG. 1, the on-vehicle electronic component control system includes various electronic components 11, 12, 13, 14 for auxiliary functions.
Each switch 11a, which controls operations in multiplex communication between
.. 11n (12a, 12b,..., 11n) based on the failure information.
12n), other switches 12a, 12b,.
2n (11a, 11b,..., 11m) are used as substitute switches. In particular, emergency switches 15 and 16 for switching the switch functions are prepared in advance in each of the switch panels 11 and 12. By arbitrarily operating this emergency switch 16 (15),
The switches 12a, 12b,... 12 of the switch panel 12 (11) on which the emergency switch 16 (15) is installed
n (11a, 11b,... 11m) as substitute switches, and switches 11a, 11b,.
2a, 12b,... 12n).

The switches 11a, 11b,..., 11m, 12a, 12b,.
.. 12n are existing push-button switches generally used in vehicles. For example, FIG. 2 is a diagram illustrating an air conditioner switch panel 11, and FIG. 3 is a diagram illustrating a door switch panel 12, respectively. Preferably, each of the switches 11a, 11a, like the air conditioner switch panel 11 of FIG.
On the surface of b,... 11 m, operation names indicating roles and functions are displayed by silk printing or the like. Such a switch panel 1
The buses 1 and 12 are connected to one cable C via a bus, and can perform multiplex communication with the air conditioner ECU 13 and the door ECU 14. It should be noted that the cable C has electronic components 11 related to the air conditioner control and the power window control as described above,
In addition to the switches 12, 13, and 14, switches and an ECU for head lamp on / off control, wiper control, and the like are connected, but are not shown here.

Each of the switch panels 11 and 12 is
As will be described later, each ECU 1
Each switch 11 responds to a call signal from
a, 11b,..., 11m, 12a, 12b,..., 12n to the ECUs 13, 14, and which switch panel 11, 12 is the faulty switch to be substituted for. And a substitute switch specifying circuit 19 for storing the same.

The failure state transmission circuits 17, 18 are operated by calling signals from the ECUs 13, 14, which will be described later, and the switches 11a, 11b,... 11m, 12a, 12b,.
The disconnection state and short-circuit state of 2n are returned to the corresponding ECUs 13 and 14 as high / low state signals. The reply signal includes the destination ECU 1
A transmission destination ID for specifying 3, 14 is included.

The substitute switch specifying circuit 19 specifically uses a microcomputer chip having a storage element such as a ROM and a RAM and a CPU connected thereto, and includes therein all the switch panels 11 and 1
2, switches 11a, 11b,... 11m, 12
A substitute function data table in which operation functions a, 12b,... 12n are stored in advance is provided. When the emergency switches 15 and 16 are pressed, each switch 11
, 11m, 12a, 12b,... 12n, switches 11a, 11b,.
.. 11n, 12a, 12b,... 12n. Here, which of the switch panels 11 and 12 in the substitute function data table is specified and switched to is selected based on a signal given from each of the ECUs 13 and 14 through the cable C.

Each of the ECUs 13 and 14 has a ROM,
It has a CPU to which storage parts such as RAM are connected,
It operates according to a software program (driver) stored in a ROM or the like. In particular,
As shown in FIG. 4, each of the ECUs 13 and 14 includes a signal transmitting / receiving means 20 for receiving a signal from each of the switch panels 11 and 12, and switches 11a, 11b,. , 12b,
.., An operation function discriminating means 21 for discriminating operation signals at 12n for each operation function; And these function elements 20 to 22 basically control an existing general load control function.
Further, the ECUs 13 and 14 periodically diagnose the failure of each of the associated switch panels 11 and 12, and when the switch panels 11 and 12 are out of order,
All of the switch panels 11 and 12 have a function of notifying which switch panel 11 or 12 is the faulty switch panel.

More specifically, each of the ECUs 13 and 14 periodically transmits a call signal to the corresponding switch panels 11 and 12 in addition to the above-described functional elements 20 to 22 to make a call. Means 23 and a fault state for recognizing and storing fault state information obtained from the fault state transmission circuits 17 and 18 in the switch panels 11 and 12 through the cable C and the signal transmitting / receiving means 20 in response to the call. Based on the recognition result in the storage unit 24 and the failure state storage unit 24, all the switch panels 11 and 12 determine which switch panel 11 or 12 is in failure.
Switch notifying means 2 for notifying the user through cable C
5 is further provided.

The emergency switches 15 and 16 include:
A self-returning push button is applied, and the switches 11a and 1 are simultaneously pressed while pressing the emergency switches 15 and 16.
1b,... 11m, 12a, 12b,... 12n are operated only when the switches 11a, 11b,.
, 12n function as substitute switches.

The operation of the on-vehicle electronic component control system configured as described above will be described.

First, each of the switches 11a, 11b,.
When m, 12a, 12b,... 12n operate normally,
When the operator selects one of the switches 11a, 11b,.
When n, 12a, 12b,... 12n are operated (step S01 in FIG. 5), in step S02 in FIG.
The substitute switch specifying circuit 19 determines whether or not the emergency switches 15 and 16 have been pressed. When the emergency switches 15 and 16 are not pressed, an operation signal is generated by the original function related to the switch operation as shown in step S03 in FIG. It is transmitted (step S04 in FIG. 5).

FIG. 7 shows the data format of the operation signal. As shown in FIG. 7, a 4-byte signal is used as each operation signal, and the switches 11a and 1
1b,... 11m, 12a, 12b,.
1, a 1-byte destination ID 32 for specifying the destination associated with 1, a 1-byte data ID 33 indicating the specified quantitative information, and any one of the switches 11a, 11b, ... 11m, 12
a, 12b,..., 12n are included in the data flags D1 to D8 each indicating 1 bit.

More specifically, for example, when an operation signal is given from the air conditioner switch panel 11, as shown in FIG.
11m, the code of the air conditioner ECU 13 in the transmission destination ID 32, the information indicating the air volume in the data ID 33, the "AUTO" indicating fully automatic operation in the data flags D1 to D8, and the function stop, respectively. “OFF”, “S / F” for instructing air blow to the sides and feet, “F-DEF” for front defroster, “R-DEF” for rear defroster, and “A” for air conditioning
/ C ”,“ MOD ”indicating mode switching, and an extra bit (Filer) are stored and data is generated.

When the operation signal is transmitted to the cable C, the ECUs 13 and 14 receive the operation signal by the signal transmission / reception means 20 and then transmit the destination ID 3 in the operation signal.
The operation function determining means 21 determines whether or not 2 matches its own code. If the codes match, the function operated based on the data ID33 and the information in the data flags D1 to D8 is determined, and the drive of the motor M1 (M) is controlled through the drive unit 22.

For example, when an operation signal from the power window switch panel 12 is given, as shown in FIG. 9, the source ID 31 in the operation signal includes the codes of the power window switches 12a, 12b,. , The destination ID 32 is the code of the door ECU 14, the data ID 33 is the power window switch data,
The data flags D1 to D8 indicate "FR-UP" for instructing the closing operation of the front right window, "FR-DOWN" for instructing the opening operation of the right front window, and the closing operation of the left window for the front seat, respectively. "FL-UP", "FL-DOWN" instructing the opening operation of the front left window, "RR-UP" instructing the closing operation of the rear right window, and "RR-UP" instructing the opening operation of the rear right window. RR
-DOWN ", which instructs the closing operation of the rear left window" RL-
UP "and" RL-DO "for instructing the opening operation of the rear left window.
WN "is stored and transmitted, and based on this, the door EC
The drive of the motor M2 is controlled similarly to the case where U14 is the air conditioner ECU13.

Although not shown in FIGS. 1 and 4, for example, when an operation signal is given from a lamp switching column switch lever near the handle, as shown in FIG. ID31 is the code of the column switch, the destination ID32 is the code of the lamp ECU, the data ID33 is the column switch data, and the data flags D1 to D8 are "OFF" indicating function stop, respectively. "HLP-LO", which indicates lighting at an angle, "HLP-HI", which indicates lighting at an upward angle of the headlamp, and "PAS", which indicates passing.
S "," TURN-R "indicating a right-turn instruction," TURN-L "indicating a left-turn instruction, and a first surplus bit (Filer
1) and the second surplus bit (Filer2) are stored and transmitted, and lamp switching drive control is performed through a lamp ECU (not shown).

When an operation signal is given from the wiper instructing lever, as shown in FIG. 11, the source ID 31 in the operation signal includes the code of the wiper switch and the destination ID.
32, the code of the wiper ECU, the data ID 33, the wiper switch data, the data flags D1 to D8, respectively, "OFF" indicating stop of the function, and the "WIPER-INT" for instructing the intermittent intermittent operation of the wiper. "WIPER-LO" for low-speed operation, "WIPER-MID" for medium-speed operation, and "WIPER-MID" for high-speed operation.
"IPER-HI", "WASS" for instructing spraying of a washer fluid, "WASS &WIPER" for spraying washer fluid and instructing a wiper operation, and a surplus bit (Filer) are stored and transmitted. Drive control of the wiper and the washer is performed.

The data formats shown in FIGS. 8 to 11 are basically fixed-length data having the same data capacity.
They are used differently when interpreted in 3,14. Therefore, whether the operation on each of the switch panels 11 and 12 is transmitted as the operation signal in FIG. 8, the operation signal in FIG. 9, or the operation signal in FIG. 10 or FIG. This depends on the interpretation processing by the operation function determining means 21 in each of the ECUs 13 and 14. If the emergency switches 15 and 16 are pressed in step S02, the process proceeds to step S05.
However, since the information about the failed switch panels 11 and 12 to be substituted is not stored in the substitute switch specifying circuit 19, the generation of the operation signal data itself is stopped.

During the above operation, the calling means 23 of each of the ECUs 13 and 14 calls the corresponding switch panels 11 and 12 via the signal transmitting / receiving means 20 and the cable C for the fault state, and changes the fault state responded to. Although it is recognized by the state storage means 24 (see FIG. 6), here,
.. 11n, 12a, 12b,... 12n, no signal is output from the fault state storage means 24 to the fault switch notifying means 25. The switch notification means 25 does not operate.

Next, each of the switches 11a, 11b,.
A case where a failure has occurred in m, 12a, 12b,... 12n will be described.

The calling means 23 of each of the ECUs 13 and 14 periodically transmits a calling signal to the corresponding switch panels 11 and 12 to make a call (step S1 in FIG. 6).
1).

Here, any one of the switches 11a, 11b,.
If a failure has occurred in a, 12b,.
In response to the call from U13, U14, each fault state transmission circuit 17, 18 is driven, and each switch 11a, 11b,.
12n are returned to the corresponding ECUs 13 and 14 (step S1 in FIG. 6).
2).

Then, one of the switch panels 11,
, 11m, and any of the switches 11a, 11b,.
When there is a failure in 12a, 12b,... 12n, the failure state storage means 24 of the ECUs 13, 14 corresponding to the failure.
Recognizes and stores the information on the failure state (step S13 in FIG. 6), the failure switch notifying means 25 functions accordingly, and the switch panel in failure is any one of the switch panels 11 and 12. All switch panels 1 through the signal transmitting / receiving means 20 and the cable C.
1 and 12 (step S14 in FIG. 6).

Each of the substitute switch specifying circuits 19 on the side of the switch panels 11 and 12 is instructed as a substitute switch based on the notification information (ie, the emergency switch 1).
The functions of the switches to be switched when (5, 16 are pressed) are specified to those of the switch panels 11 and 12 involved in the failure.

In such a state, the operator operates any of the failed switches 11a, 11b,.
.. 12n, the motor M is not driven as intended by the operator, and the operator operates the switches 11a, 11b,.
b,... 12n are out of order. It should be noted that some of the switch panels 11 and 12 that are malfunctioning are displayed on the display.
Is desirably displayed because the operator can know in advance the switch panels 11 and 12 in failure.

At this time, the operator operates the other switch panel 1 (ie, other than the switch panels 11 and 12 related to the failure).
While pressing the emergency switches 15 and 16 in 1,12,
At the same time, the switches 11a, 11b,... In the switch panels 11, 12 where the emergency switches 15, 16 are installed.
Operate the switches 11m, 12a, 12b,... 12n as substitute switches (step S01 in FIG. 5).

Then, the switch panels 11, 1
The substitute switch specifying circuit 19 of step 2 in FIG.
In 02, it is determined whether or not the emergency switches 15, 16 have been operated. If the result of the determination is affirmative, in step S05, the functions of the switch panels 11 and 12 that have already been identified are taken in from the built-in substitute function data table, and the operation signal is generated in accordance with this. I do. In this case, the transmission destination ID 32 in FIG.
ECUs 13 and 1 corresponding to the failed switch panels 11 and 12, instead of the ECUs 13 and 14 corresponding to the ECUs 1 and 12.
4 are stored. The data ID 33 and the data flags D1 to D8 include the switches 11a, 11b,.
.. 12n, switches 11a, 11b,.
Operation information on 12a, 12b,... 12n is stored. Then, the generated operation signal is transmitted to the cable C (step S04 in FIG. 5).

The ECUs 13 and 14 corresponding to the malfunctioning switch panels 11 and 12 confirm that the code of the transmission destination ID 32 matches its own code, and then operate the operation function based on the operation signal at this time. Driving means 2
2 to control the drive of the motor M.

A specific operation example using the substitute switch will be described. For example, if any one of the switches 11a, 11b,... 11m of the air conditioner switch panel 11 is out of order, the switches 11a, 11b,.
The fault condition transmitting circuit 17 within 1 m detects the fault condition and transmits the fault condition to the fault condition storage means 24 in the air conditioner ECU 13 through the cable C. In response to this, the failure switch notifying unit 25 notifies all the switch panels 11 and 12 that the air conditioner switch panel 11 is out of order via the signal transmitting / receiving unit 20 and the cable C. In each of the switch panels 11 and 12, the information notified to the substitute switch specifying circuit 19 therein is taken. At this time, a signal is transmitted from the failure state storage means 24 in the air conditioner ECU 13 to a display device (not shown),
It may be displayed that the air conditioner switch panel 11 is out of order.

Next, the operator operates the air conditioner switch panel 1
, 11m, the failed switches 11a, 11b,.
When the is operated, the operation signal is not transmitted to the air conditioner ECU 13 due to the failure, so that the air conditioner motor M1 does not operate. The operator can use the switch 11
a, 11b,... 11m are out of order. Alternatively, when the display device (not shown) indicates that the air conditioner switch panel 11 is out of order, the operator can recognize from the display contents that the air conditioner switch panel 11 is out of order.

While pressing another switch panel arbitrarily selected, for example, the emergency switch 16 in the door switch panel 12, the switches 12a, 12b,... 12n in the door switch panel 12 are operated. Then, the substitute switch specifying circuit 19 in the door switch panel 12 refers to the substitute function data table,
The function of the operated switches 11a, 11b,... 11m is specified, and an operation signal is generated as data. At this time, the format of the operation signal is generated in accordance with the data format of FIG. 8 instead of the data format of FIG. In particular, regarding the transmission destination ID 32, the door ECU 14
Instead, the code of the air conditioner ECU 13 is stored.
Then, the generated operation signal is transmitted to the cable C.

Signal transmitting / receiving means 20 of air conditioner ECU 13
Then, after confirming that the code in the transmission destination ID 32 matches its own code, the operation function discriminating means 21 recognizes the data ID 33 and the operation function stored in the data flags D1 to D8, and recognizes it. The driving of the air conditioner motor M1 is controlled through the driving means 22 in accordance with the contents thus set.

Note that, as described above, the door switch panel 12
In the case where the emergency switch 16 is pressed and an operation signal is output, the door ECU 14 transmits the destination ID 3
Since the code of the door ECU 14 itself is not stored in 2, the signal transmission / reception means 20 does not receive the code, so that the door ECU 14 does not control the driving of the door motor M2.

As described above, the failed switches 11a, 1
.. 11n (12a, 12b,... 12n) instead of the other switches 12a, 12b,.
11b), the emergency switch 16 (15) for switching the switch function is arbitrarily operated on each of the switch panels 11 and 12 so that the switches can be operated in accordance with the operator's intention. There is the advantage that substitution can be made. In particular, by targeting the in-vehicle electronic component control system mounted in a car, when installing a switch panel etc. in a certain interior space in a car, installing a substitute switch without providing a dedicated switch panel There is an advantage that you can.

In the above embodiment, the drive control of the air conditioner and the power window has been mainly described as an example. However, it goes without saying that the same applies to various electronic components for other auxiliary functions such as a lamp and a wiper. .

In the above embodiment, the failure state storage means 24 and the failure switch notifying means 25 are provided by the ECU 13,
Although provided on the side 14, it may be provided in the switch panels 11 and 12. In this case, the calling means 23 is not required in the ECUs 13 and 14, and each switch panel 11, 1
2, a self-diagnosis of a failure state inside the switch panel may be performed periodically and spontaneously.

[0048]

According to the first to third aspects of the present invention, each switch panel is provided with faulty switch notifying means for recognizing the presence or absence of a fault in each switch panel and informing all other switch panels. Provided with a substitute switch specifying circuit and an emergency switch, so that when the emergency switch is operated in each switch panel, it functions as a substitute switch for substituting the faulty switch panel stored in the substitute switch specifying circuit. Therefore, there is an advantage that the operator can arbitrarily operate the emergency switch to make the switch panel function as a substitute switch, and substitute the switch according to the operator's intention. In particular, by targeting the in-vehicle electronic component control system mounted in a car, when installing a switch panel etc. in a certain interior space in a car, installing a substitute switch without providing a dedicated switch panel There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an outline of a vehicle-mounted electronic component control system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an air conditioner switch panel according to one embodiment of the present invention.

FIG. 3 is a diagram showing a door switch panel in one embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration in each ECU according to one embodiment of the present invention.

FIG. 5 is a flowchart showing a flow of a switch operation according to the embodiment of the present invention.

FIG. 6 is a flowchart showing a flow of a failure diagnosis according to one embodiment of the present invention.

FIG. 7 is a diagram showing a data format of an operation signal.

FIG. 8 is a diagram showing a data format of an operation signal related to air conditioner control.

FIG. 9 is a diagram illustrating a data format of an operation signal related to power window control.

FIG. 10 is a diagram showing a data format of an operation signal related to lamp control.

FIG. 11 is a diagram showing a data format of an operation signal related to wiper control.

FIG. 12 is a block diagram showing a wiring relationship of a conventional in-vehicle electronic component control system.

[Description of Signs] 11a, 11b,... 11m, 12a, 12b,.
Switch 11 Air conditioner switch panel 12 Door switch panel 13 Air conditioner ECU 14 Door ECU 15, 16 Emergency switch 17, 18 Failure state transmission circuit 19 Substitute switch specifying circuit 20 Signal transmission / reception means 21 Operation function determination means 22 Driving means 23 Calling means 24 Failure state storage means 25 Failure switch notification means 31 Source ID 32 Destination ID 33 Data ID M1 Air conditioner motor M2 Door motor

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiyuki Sonoda 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term in Harness Research Institute, Inc. 5G034 AB05 AC02 AE01

Claims (3)

[Claims] 1. A plurality of electronic control units for driving various loads and a plurality of switch panels associated with the electronic control units are connected to the same cable, and are connected to each other. An in-vehicle electronic component control system in which communication is performed by multiplex communication, wherein each of the switch panels or each of the electronic control devices recognizes the presence or absence of a failure of each of the switch panels, and any one of the switch panels has a failure. In the event of a failure, a failure switch notification means for notifying the failure switch panel to all other switch panels is provided, and in accordance with the notification from the failure switch notification means, each of the switch panels determines which of the switch panels And a substitute switch specifying circuit that stores whether the switch panel is faulty. An emergency switch instructing to function as a substitute switch for controlling an electronic control device associated with another failed switch panel, wherein each of the switch panels includes the emergency switch in the switch panel. An in-vehicle electronic component control system, which, when operated, functions as a substitute switch that substitutes a faulty switch panel stored in the substitute switch specifying circuit. 2. The on-vehicle electronic component control system according to claim 1, wherein the substitute switch specifying circuit in each of the switch panels includes a data table for all switch operations of all other switch panels in advance. When the emergency switch is stored and is operated, the substitute switch specifying circuit of the switch panel compares the data table and functions the switch panel as the substitute switch. Electronic component control system. 3. The on-vehicle electronic component control system according to claim 1, wherein each of the electronic control units calls one switch panel associated with the electronic control unit. Calling means for instructing to check the failure state of the switch panel; and recognizing the failure state of the switch panel based on a signal output from the one switch panel in response to a call from the calling means. Fault state storage means for storing, and when the one switch panel is recognized as faulty based on the recognition result of the fault state storage means, the fact that the one switch panel is faulty for all switch panels The failure switch notifying means for notifying the operation signal from the one switch panel or another switch panel functioning as the substitute switch. Automotive electronics control system including an operation function determining means, and driving means for the drive control of the load based on the results determined by the operation function determining means for determining a function.