JP2003108383A - Electronic control device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for arranging an exclusive control device that is different every specification of a plurality of electronic equipment for vehicle, to reduce the management man-hours, to improve assembly work, test or the like, also to dispense with components of cable or the like by using radio waves, thereby reducing failure/replacement of components. SOLUTION: First electronic equipment mounted and arranged on a vehicle is provided with a receiving means that can receive control data for a plurality of electronic equipment for vehicle as radio waves, a data discriminating means for determining whether the received control data is effective, and a transmitting means for transmitting the data when having determined that the data are effective. A communication means is arranged for enabling the serial communication between the plurality of electronic equipment and the first electronic equipment. Either one of the electronic equipment is selected as second electronic equipment from among the plurality of electronic equipment for vehicle. The second electronic equipment has a second reception means for receiving the data transmitted from the first electronic equipment via the communications means and a storage means that can write the data received by the second reception means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle electronic control device, and more particularly, it differs depending on the specifications of a plurality of vehicle electronic devices when writing data to a vehicle electronic device (vehicle controller) and testing a vehicle. The present invention relates to a vehicle electronic control device that does not require a dedicated electronic device (control device).

[0002]

2. Description of the Related Art In recent years, electronic control has been advanced in vehicles, and electronic equipment for vehicles (vehicle controller) (ECU)
For example, a plurality of in-vehicle electronic devices (ECU) such as an engine controller (ECM), a transmission controller (TCM), an antilock brake system (ABS) controller, and a torque control controller are mounted.

Similarly, in a vehicle, an audio device including a radio receiver also has a microprocessor (MCU) as an entertainment system and simply receives radio waves and outputs sound from a speaker. Instead, for example, receiving traffic information carried by FM multiplex waves (signals) or traffic congestion information by road traffic information communication system (VICS) and displaying it on a display or reflecting it on a navigation device. Is becoming possible, and further, it is becoming an important position in the vehicle by being integrated with the function carried by other electronic equipment (ECU) other than the audio device. Each of these electronic devices (ECU) is mainly connected by, for example, a serial communication line (cable) as a communication means in order to realize a higher value-added function, and each electronic device (EC) is connected.
Data communication is performed between U). Each of these electronic devices (ECU) is not a single specification, but each electronic device (EC
There are a large number of specifications depending on the model, export destination, grade, etc. of U) specifications.

That is, as shown in FIG. 13, in the vehicle electronic control unit 904 of the vehicle 902, the radio receiver 90 is used.
The electronic device (controller) 908 connected to 6 and a plurality of vehicle-mounted electronic devices (vehicle-mounted controller) 910 such as an engine controller, a transmission controller, an anti-lock brake system controller, and a torque control controller are installed in the vehicle 902. An electronic device 908 / on-vehicle electronic device 910 that is mounted and has an external device (external program device) 912 provided separately from the vehicle 902 and connected to the radio receiver 906.
Connector device 91 for connecting the external device 912 with the external device 912
No. 4 is provided in the vehicle 902, and bidirectional data communication is possible as a communication means for connecting the electronic device 908 / vehicle-mounted electronic device 910 connected to the radio receiver 906 and the vehicle-side connection connector 914A of the connector device 914. An in-vehicle serial communication line (cable) 916 is installed in the vehicle 902, and an in-vehicle serial communication line capable of two-way data communication as a communication means for connecting the external device 912 and the external device side connector 914B of the connector device 914 ( Cable) 918 is provided.

As a result, in the production line of the vehicle 902, when the designated vehicle 902 arrives at the required position on the line, the external device 912 is connected to the outside serial communication line 9
18 and the connector device 914, the electronic device 908 and the vehicle-mounted electronic device 910 connected to the radio receiver 906 of the vehicle 902 are connected, and after the connection to the vehicle 902, the external device 912 is connected to the vehicle 902. The data according to the specifications of the electronic device 908 and the in-vehicle electronic device 910 connected to the radio receiver 906 are stored in the radio receiver 906.
Device 908 / vehicle electronic device 91 connected to
0, and the data is transmitted to the vehicle-mounted electronic device 9
It is written in a non-volatile memory such as a flash ROM or an EEPROM as a storage means (ROM) 10. Since the outside-vehicle serial communication line 918 is capable of bidirectional data communication, after completion of writing the data in the storage means, a writing completion message is returned from each vehicle-mounted electronic device 910 to the external device 912.

Further, such an electronic control device for a vehicle is disclosed in, for example, Japanese Patent Application Laid-Open Nos. 11-143720 and 7-31603. JP-A-1
The one described in Japanese Patent Laid-Open No. 1-143720 is a rewritable storage means for storing a control program, and a storage means for receiving information of a control program after version upgrade via a communication line and storing it in the storage means. And a wireless receiving unit that receives information of a control program to be used in the first in-vehicle device as a radio wave, and information received by the wireless receiving unit. A second vehicle-mounted device having a transmission means for transmitting to the first vehicle-mounted device via a communication line is provided, eliminating the need to remove the vehicle-mounted device from the instrument panel and upgrading the version of the vehicle-mounted device control program. It is easy to implement. The one described in Japanese Patent Application Laid-Open No. 7-31163 compares a code received from the outside at a predetermined timing before entrusting control to a transfer program with a code previously stored in a specific address of a rewritable storage means. In the case of disagreement, rewrite control means for stopping the rewrite mode is provided to improve program confidentiality and protection.

[0007]

However, in the conventional electronic control unit for a vehicle, when a large number of specifications occur depending on the model, export destination, and grade of the specifications of a plurality of vehicle-mounted electronic devices. On the production line side, a plurality of electronic devices (ECU) are stored in storage containers prepared for each specification.
Thus, as the specifications increase, each of these electronic devices (E
(CU) inventory and storage space will increase, and when the specifications of the parts to be mounted on the vehicle will increase, it will take time for the operator to confirm, install the wrong specifications, and order / accept management costs for the parts. There was a problem that it also increased.

In order to solve this problem, for example, in an electronic equipment (ECU) having common hardware and different software specifications, parts having different specifications are left unset and are used as common parts. Delivered to the factory,
Before and after mounting on a vehicle, data is written for each specification via a serial communication line (cable) outside the vehicle.

However, in such a case, it is necessary to install a serial communication line (cable) outside the vehicle, which is an obstacle to work at the time of assembling and testing, and the connectable work area is limited. On the production line, the connection can be left for only a very short time, and when writing data in separate steps, it is necessary to reconnect the serial communication line outside the vehicle. If it increases, the management man-hour will increase, the parts ordering / acceptance management cost will increase, and in the external serial communication line that connects the vehicle and the external device, the number of times the external device side connector is attached / detached will increase the number of connectors. There was an inconvenience that it was damaged and the connector had to be replaced.

[0010]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention provides a first receiving means capable of receiving control data of a plurality of vehicle-mounted electronic devices as a radio wave, and the first receiving means. First data identifying means for determining whether the control data received by the receiving means is valid data, and the control data received by the first receiving means by the first data identifying means is valid. A first means provided with a transmitting means for transmitting the data when the data is determined to be data
The electronic device is mounted on the vehicle, and a communication unit is provided for enabling serial communication between the plurality of vehicle-mounted electronic devices and the first electronic device. The first electronic device is the first electronic device. An electronic device is selected as the second electronic device from the plurality of vehicle-mounted electronic devices for each control data received by the receiving means, and the second electronic device is transmitted from the first electronic device. It has a second receiving means for receiving the data from the communication means, and a storage means capable of writing the data received by the second receiving means.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a first electronic device that receives control data of a plurality of vehicle-mounted electronic devices as radio waves and data from the first electronic device is received and stored by serial communication. Since the second electronic device, which is an electronic device selected from among the plurality of vehicle electronic devices, is provided, the plurality of vehicle electronic devices (engine controller, transmission controller, antilock brake system controller, torque control controller) It is not necessary to provide a dedicated electronic device (control device) different for each specification), and the serial communication line (cable) outside the vehicle is not required, and the management man-hours can be reduced, thus assembling the factory. It improves workability, facilitates assembly, testing, etc., and also uses wireless waves to transmit control data for multiple in-vehicle electronic devices. Since signal, and unnecessary parts of the cable or the like as the communication means, it is possible to reduce the damage and replacement of parts.

[0012]

Embodiments of the present invention will be described in detail and specifically with reference to the drawings. 1 to 12 show an embodiment of the present invention. In FIG. 2, 2 is a vehicle.
The vehicle 2 is provided with a vehicle electronic control unit 4.

In the vehicle electronic control unit 4, FIG.
As shown in FIG. 2, the first electronic device 6 and the second electronic device 8 are mounted on the vehicle 2, and an external device (external program device) 10 is provided separately from the vehicle 2. The first electronic device 6 and the second electronic device 8 are provided by being connected by a serial communication line (cable) 12 capable of bidirectional data communication as a communication means capable of serial communication. A vehicle-side connector 14 is connected to the serial communication line 12 and provided.

The first electronic device 6 is provided with a radio receiver (tuner) 16 connected thereto. The radio receiver 16 includes a receiving antenna 1 attached to the vehicle 2.
8 is provided in contact. The radio receiver 16 itself can be used as the first electronic device 6.

The second electronic device 8 is selected from among a plurality of vehicle-mounted electronic devices (vehicle-mounted controllers) such as an engine controller, a transmission controller, an anti-lock brake system controller, a torque controller, and the like. One of the selected electronic devices.

The external device 10 is provided with a transmitting antenna 20 and, as shown in FIGS.
It is provided by contacting 2. The transmission data instruction device 22 communicates with the production management database 24. The external device 10 inputs control data of a plurality of vehicle-mounted electronic devices from the production management database 24 from the transmission data instruction device 22 and transmits the control data from the transmission antenna 20 to the reception antenna 18 as a radio wave. .

As a result, in the vehicle electronic control unit 4, in the production line, when the designated vehicle 2 arrives at a predetermined position on the line, as shown in FIG. 3, a plurality of on-vehicle electronic devices are controlled. Data is transmitted from the external device 10 as a radio wave such as an FM multiplex wave, and the control data of the vehicle-mounted electronic device is received by the radio receiver 16 of the vehicle 2 and is connected to the radio receiver 16. First electronic device 6
To the second electronic device 8 according to the specifications of the second electronic device 8 which is one of the electronic devices selected from the plurality of vehicle-mounted electronic devices mounted on the vehicle 2. The data is a flash ROM or an EEPROM as a writing storage means 8D of the second electronic device 8 which will be described later.
Etc. is written in a non-volatile memory. When the writing of data to the writing storage means 8D of the second electronic device 8 is completed, the setting is notified by a warning light 26, for example, in an instrument panel (not shown) as a display means.

In the first electronic device 6 connected to the radio receiver 16, as shown in FIG. 1, the first receiving means (communication means) as the receiving means capable of receiving the control data from the external device 10 as a radio wave. Port) 6A, a decoder means 6B for decoding and outputting a signal from the first receiving means 6A, a first central processing unit (CPU) 6C in communication with the decoder means 6B, and a first central part of this. A first transmission means (communication port) 6D that communicates with the processing device (CPU) 6C is provided. First central processing unit (C
PU) 6C has a first data identifying means 6C-1 for determining whether the data received by the first receiving means 6A is valid data and a control received by the first receiving means 6A. Selection means 6C for selecting one of the plurality of vehicle-mounted electronic devices as the second electronic device 8 for each data.
-2 and are provided. Further, when the data identifying means 6C-1 determines that the control data received by the first receiving means 6A is valid data, the transmitting means 6D transmits the data to the second electronic device 8. It is a thing. One side of the serial communication line 12 is connected to the transmitting means 6D.

As a result, in the first electronic device 6 connected to the radio receiver 16, the radio wave (message) of the control data transmitted from the external device 10 is sent to the first receiving means 6A, The data from the first receiving means 6A is decoded by the decoder means 6B and taken into the first central processing unit 6C. This data includes the source address (identifies to which in-vehicle electronic device the data is sent)
And an identifier (identifying a command number or the like) for distinguishing the contents of data are included. Then, the first electronic device 6
Transmits a message of this data to, for example, the engine controller of the desired second electronic device 8 according to the content of the data. Then, the completion of writing in the second electronic device 8 is notified by using the warning light 26. Generally, the warning light 26 is connected to the engine controller of the second electronic device 8. This engine controller inquires of each electronic device about the completion of data writing at regular intervals. At this time, if it is recognized that there is an uncompleted electronic device, the warning light 26 is made to blink. On the other hand, when the writing of data is completed, the warning light 2
Turn off 6 Due to fear of illegal modification, the same function must be working after it is put on the market. In order to prevent this, the in-vehicle electronic device (controller) that has completed writing data refuses to receive the writing again.

Further, in the second electronic device 8, FIG.
As shown in FIG. 1, the data writable configuration is
Serial communication line 12 to connect to the electronic device 6 of
Second receiving means (communication port) 8A connected to the other side
And an input processing device 8B for inputting a signal from the vehicle-mounted sensor 28 to perform waveform processing, and a second receiving means 8A, and an optimum control amount for target control based on the signal from the input processing device 8B. A second central processing unit (CPU) that performs a calculation and outputs a control signal based on the calculation result
8C and a writing storage means 8D (ROM) including a block rewritable non-volatile memory that stores a control program and data (a flash ROM or an EEPROM (for electrically erasable / writable ROM when programming in a factory) )) And a second central processing unit (CPU) 8
A storage unit (RAM) 8E for storing data for C to perform calculation, and a second central processing unit (CPU) 8C
And an output control device 8F for driving the actuator 30 in response to the control signal from. The second receiving means 8A is capable of receiving data that can be distinguished from other vehicles 2. Also, a second central processing unit (CPU) 8C
Is a second data identifying means 8C-1 for judging whether or not the data received by the second receiving means 8A is required data.
Is equipped with.

As a result, when a program is carried out on the assembly line of the vehicle 2, a flash ROM is used as the writing storage means 8D and the common program portion has already been written. There are two methods, one is to write a part and the other is to write only a flag indicating which software is selected after writing all possible non-common parts.

Therefore, in this embodiment, the first receiving means 6A capable of receiving the control data of a plurality of vehicle-mounted electronic devices as radio waves and the control data received by the first receiving means 6A are effective. The first data identifying means 6C-1 for determining whether or not it is data, and the control data received by the first receiving means 6A by the first data identifying means 6C-1 is determined to be valid data. First electronic device 6 provided with transmitting means 6D for transmitting data when
Is mounted on the vehicle 2 to provide a plurality of on-vehicle electronic devices and a first electronic device.
Means 12 for enabling serial communication with the electronic device 6 of
The first electronic device 6 is provided with a second electronic device from among a plurality of vehicle electronic devices for each control data received by the first receiving means 6A.
Any one of the electronic devices is selected as the electronic device 8 of the second electronic device 8, and the second electronic device 8 receives the data transmitted from the first electronic device 6 from the communication means 12 by the second receiving means 8A.
And a storage means 8D in which the data received by the second receiving means 8A can be written.

The first receiving means 6A and the first receiving means 6A are capable of receiving control data as a radio wave in which at least a part of data of a plurality of on-vehicle electronic devices has a unique part for each specification. The destination information of the received control data and the destination information by the first data identification means 6C-1 for judging whether or not the data unique to the vehicle side matches A plurality of vehicle-mounted electronic devices, the first electronic device 6 including a transmitting unit 6D that transmits data when it is determined that the unique data of the vehicle and the unique data of the vehicle match. And a first electronic device 6 are provided with a communication means 12 that enables serial communication, and the first electronic device 6 selects the first from among a plurality of vehicle-mounted electronic devices for each control data received by the first receiving means 6A. 2 as electronic device 8 Or select the electronic apparatus Re, the second
The electronic device 8 is capable of receiving data that can be distinguished from other vehicles, and determines whether the data received by the second receiving means 8A is necessary data. When the second data identifying means 8C-1 and the second data identifying means 8C-1 determine that the data received by the second receiving means 8A is necessary data, the second receiving means 8A receives it. Storage device 8D capable of writing the stored data.

Next, the operation of this embodiment will be described.

In the vehicle electronic control unit 4, when the self-identification number is written in the vehicle 2, the vehicle 2 needs to judge whether or not the transmitted control data is transmitted to itself. is there. Therefore, it is necessary to obtain the vehicle proof (ID) for recognizing the self, and then take in necessary data and write it in the writing storage means (ROM) 8D.

A generally considered vehicle proof (ID) is
Vehicle number (the same number as the vehicle number stamped on the vehicle:
(VIN) or a classification number for recognizing the specifications, and the amount of data is small, so the data communication time / writing time in this step is very short.

Further, the distance between the transmission antenna 20 of the external device (external program device) 10 for writing the self-identification number and the vehicle 2 is made as short as possible, and the radio wave to be transmitted is weakened and transmitted. By applying a system in which the directivity of the credit antenna 20 is narrowed down to the relevant vehicle 2, it is necessary to prevent the self-identification numbers from being mistakenly written in the vehicles 2 before and after the line. For example, as shown in FIG.
There is a system in which the transmitting antenna 20 is hung from the upper part of the vehicle line, and the information in the production control database 24 is sent from the external device 10 to the transmitting antenna 20. In addition, in case of being unable to write the self-identification number at one time due to some trouble, the transmitting antenna 2 is provided at a plurality of locations.
In some cases, 0 is set. The self-identification number of the vehicle 2 in this step (below the transmitting antenna 20) is
It is searched from the production management database 24 of the factory.

The process of writing the self-identification number by the external device 10 is performed as follows.

As shown in FIG. 4, when the vehicle 2 arrives below the transmitting antenna 20 (step 102), the external device 10 receives the self-identification number of the vehicle 2 as control data from the production management database 24 (step 102). 10
4) Then, the received self-identification number is included in the command for writing the self-identification number, and the command is transmitted to the first electronic device 6 connected to the radio receiver 16 (step 106),
Return to step 102.

When the first electronic device 6 connected to the radio receiver 16 receives the data transmitted from the external device 10 as shown in FIG. 5 (step 202),
It is judged whether or not the command data for writing the self-identification number has been received (step 204), and this step 2
When 04 is NO and the data of the command for writing the self-identification number is not received, control is performed according to the content of the received data (step 206), while step 204
Is YES, and if the data of the command to write the self-identification number is received, the command to write the self-identification number is transmitted to the engine controller (ECM) of the second electronic device 8 that stores the self-identification number. (Step 20
8) and returns to step 202.

Then, in the writable second electronic device 8 which is supposed to write the self-identification number, the first electronic device 8 connected to the radio receiver 16 as shown in FIG.
When the data transmitted from the electronic device 6 is received (step 302), it is determined whether the data of the command for writing the self-identification number is received (step 304).
If this step 304 is NO and the data of the command for writing the self-identification number is not received, control is performed according to the content of the received data (step 306), while
If YES in step 304 and the data of the command for writing the self-identification number is received, the self-identification number is written in the flash ROM or the EEPROM serving as the writing storage unit 8D (step 308), and the process returns to step 302.

On the other hand, in the writable second electronic device 8 in which the self-identification number is not written, the first electronic device 8 connected to the radio receiver 16 as shown in FIG.
When the data transmitted from the electronic device 6 is received (step 402), it is determined whether the data of the command for writing the self-identification number is received (step 404),
When this step 404 is NO and the command for writing the self-identification number has not been received, control is performed according to the content of the received data (step 406), while on the other hand, when step 404 is YES, the self-identification number is written. If the command data has been received, the write request for the self-identification number is ignored (step 408), and step 40
Return to 2.

Next, in the vehicle program / constant writing process, as shown in FIG. 8, a plurality of transmitting antennas 20-1 to 20-4 are arranged on the line at predetermined intervals,
The external devices 10-1 to 10-4 are arranged corresponding to the transmitting antennas 20-1 to 20-4, for example, corresponding to an engine controller, a transmission controller, an antilock brake system controller, and a torque control controller, respectively. Then, the transmission data instructing device 22 transmits the respective control data of the production management database 24 from the external devices 10-1 to 10-4, respectively.

The process of writing the vehicle program / constant is carried out after the above-mentioned "process of writing the self-identification number to the vehicle". Since the identification number is written, even if the external device 10 transmits a radio wave over a wide range, erroneous data will not be written in the vehicle 2 other than the designated one.
In addition, since the amount of data is larger than the writing of the self-identification number, it takes time to send / receive and write the data. Therefore, it is necessary to transmit radio waves over a wide range to some extent so that data is not interrupted. Further, in consideration of the line tact, the transmission data instructing device 2 is configured so that the data is downloaded in any one of the areas in charge of the external devices 10.
2 determines the data to be transmitted to each external device 10 with reference to the production management database 24.

That is, as shown in FIG. 9, in the transmission data instructing device 22 for writing the vehicle program / constant, the vehicle arriving from the production management database 24 in the next step of "writing the program / constant into the vehicle". 2, retrieves the self-identification number and the data (program or control constant) to be written (step 502), and
It is determined in which transmission area of the external device 10 the data will be transmitted (step 504), the self-identification number and the data to be written (program or control constant) are transmitted to this external device 10 (step 506), and step 502. Return to.

Then, in the external device 10, FIG.
As shown in, a self-identification number and data to be written (program or control constant) are received from the transmission data instruction device 22 (step 602), and a data write command including the self-identification number and data to be written is received by radio in the area in charge. It transmits to the 1st electronic equipment 6 connected to the machine 16 (step 604), and returns to step 602.

In the first electronic equipment 6 connected to the radio receiver 16, as shown in FIG.
The data transmitted from the device is received (step 702), and it is determined whether the data is a data write command data (step 704). If this step 704 is NO and the data write command data is not received, the received data is received. Control according to the contents of
6) On the other hand, when step 704 is YES and the data is the data of the data write command, the self-identification number is obtained from the engine controller (ECM) of the second electronic device 8 storing the self-identification number. (Step 7
08), and it is judged whether or not it matches the self-identification number (step 710), and this step 710 is NO.
If it does not match the self-identification number, the process returns to step 702. On the other hand, if step 710 is YES and the self-identification number matches, the data (self-identification number and data to be written (program or program Control constant)) is transmitted to the writable second electronic device 8 according to the content of the data (step 712) and the process returns to step 702.

Then, in the writable second electronic device 8, as shown in FIG.
The data transmitted from the first electronic device 6 connected to is received (step 802), it is determined whether or not it is a data write command to itself (step 804), and if this step 804 is NO, If it is not a data write command, control is performed according to the content of the received data (step 806). On the other hand, if step 804 is YES and the command is a data write command to itself, data (self-identification number) And the data (program and control constants) to be written into the flash ROM or the EEPROM as the writing storage unit 8D (step 808), and the process returns to step 802.

As a result, first receiving means 6A capable of receiving control data of a plurality of vehicle-mounted electronic devices as radio waves,
First data identifying means 6 for judging whether or not the control data received by the first receiving means 6A is valid data.
C-1 and transmitting means 6D for transmitting data when the first data identifying means 6C-1 determines that the control data received by the first receiving means 6A is valid data.
The first electronic device 6 provided with is installed in the vehicle 2 and the communication means 12 for serially communicating the plurality of vehicle-mounted electronic devices with the first electronic device 6 is provided. The device 6 selects any one of the plurality of vehicle-mounted electronic devices as the second electronic device 8 for each control data received by the first receiving means 6A, and the second electronic device 8
The data transmitted from the first electronic device 6 is transmitted to the communication means 12
Second receiving means 8A for receiving data from the second receiving means, and storage means 8D capable of writing data received by the second receiving means 8A.
Since it has the above, it is not necessary to provide a dedicated electronic device (control device) different for each specification of a plurality of vehicle-mounted electronic devices (engine controller, transmission controller, antilock brake system controller, torque control controller, etc.), In addition, the serial communication line (cable) outside the vehicle is not required, and the management man-hours can be reduced. Therefore, the workability of assembling in the factory is improved, the assembling and the testing are facilitated, and the wireless communication enables multiple communication. Since the control data of the in-vehicle electronic device is transmitted, parts such as a cable are unnecessary as communication means, and damage / replacement of parts can be reduced. That is, vehicle 2
Since the settings for each specification are made after it is installed in the, the number of specifications of the electronic device is reduced. In this way, when the number of specifications of the electronic device is reduced, the inventory of the electronic device is also reduced, and the ordering /
When the delivery management cost is reduced and the number of specifications of electronic devices is reduced, the complexity of the work of mounting the device on the vehicle 2 is alleviated, erroneous assembly is also reduced, and another assembly for data communication is performed. Test work becomes possible, data can be written to the vehicle and control instructions can be given even while the vehicle is moving, and the completion of the work can be confirmed by the warning light 26. It is unnecessary, and it is possible to eliminate damage and replacement.

Further, the first receiving means 6A capable of receiving control data as a radio wave in which at least a part of data of a plurality of vehicle-mounted electronic devices has a unique part for each specification, and the first receiving means 6A. The destination information of the received control data and the destination information by the first data identification means 6C-1 for judging whether or not the data unique to the vehicle side matches A plurality of vehicle-mounted electronic devices, the first electronic device 6 including a transmitting unit 6D that transmits data when it is determined that the unique data of the vehicle and the unique data of the vehicle match. And a first electronic device 6 are provided with a communication means 12 that enables serial communication, and the first electronic device 6 selects the first from among a plurality of vehicle-mounted electronic devices for each control data received by the first receiving means 6A. 2 as electronic device 8 Or select the electronic apparatus Re, the second
The electronic device 8 is capable of receiving data that can be distinguished from other vehicles, and determines whether the data received by the second receiving means 8A is necessary data. When the second data identifying means 8C-1 and the second data identifying means 8C-1 determine that the data received by the second receiving means 8A is necessary data, the second receiving means 8A receives it. The control data to be transmitted is stored in the storage means 8D capable of writing the stored data.
There is no need to worry about writing anything other than the correct vehicle to send,
It is highly reliable and can be used even on a factory assembly line.

Further, since the radio receiver 16 is connected to the first electronic device 6, a dedicated receiver is not required separately and the number of parts can be reduced.

The present invention is not limited to the above-mentioned embodiment, and it is needless to say that various application modifications can be made.

That is, first, after the completion of all the data writing steps, in the layout as shown in FIG. 3, by sending a control command to each electronic device instead of the self-identification number, the engine is automatically operated. Start / automatic stop,
It is possible to automate the work. Further, in the completion inspection of the vehicle, it is possible to reduce the number of inspection steps by remotely controlling the self-diagnosis program of each electronic device. Secondly, when there is a problem in the program of the electronic equipment of the vehicle collected in the factory premises after the line-out at the factory and the program has to be rewritten, It is possible to prepare the same equipment as shown, further increase the transmission output, and rewrite the vehicles in the factory premises in a short time. Therefore, it becomes unnecessary to search for the vehicle or move the vehicle. In other words, in addition to writing data, for example, it can be used for remote automatic start / stop of the engine on the vehicle production line, or on the completion inspection of the vehicle at every rest time, on the engine of the completion inspection line. It is also possible to start and stop each one and use it for automation. Also,
It can also be used for automatic / starting of an on-vehicle self-diagnosis device (OBD) or forcibly starting a specific on-vehicle self-diagnosis device (OBD) monitor for a vehicle arriving at this process.

In addition, a vehicle on the production line is equipped with a portable electronic device in which unique data of the corresponding self-recognition of the vehicle is stored, and each data of the production process is reported from the portable electronic device as well as the on-vehicle electronic device. It is also possible to write a program in the device and control the production of the vehicle by the portable electronic device when the vehicle is completed. Further, in the middle of the production line, it is possible to exchange various kinds of vehicle-related data between the vehicle-mounted electronic device and a plurality of external persons. As a result, the process control of vehicle production is simplified, and the value using radio waves can be derived.

[0045]

As is apparent from the above detailed description, according to the present invention, a first electronic device that receives control data of a plurality of vehicle-mounted electronic devices as a radio wave and data from the first electronic device are received. By providing a second electronic device which is an electronic device selected from among a plurality of in-vehicle electronic devices that are received and stored by serial communication, a plurality of in-vehicle electronic devices (engine controller, transmission controller, It is no longer necessary to provide a dedicated electronic device (control device) that differs for each specification of the lock brake system controller, torque control controller, etc., and no external serial communication line (cable) is required.
It is possible to reduce the management man-hours, thus improving the workability of assembling the factory, facilitating the assembling and the test, and transmitting the control data of a plurality of in-vehicle electronic devices by radio waves. Parts such as cables are unnecessary as communication means, and damage / replacement of parts can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram of an electronic control unit for a vehicle.

FIG. 2 is a side view of a vehicle including an electronic control unit for the vehicle.

FIG. 3 is a system configuration diagram when writing a self-identification number.

FIG. 4 is a flowchart by an external device when writing a self-identification number.

FIG. 5 is a flowchart by the first electronic device connected to the radio receiver when writing the self-identification number.

FIG. 6 is a flowchart of a second electronic device when writing a self-identification number.

FIG. 7 is a flowchart by the second electronic device when a self-identification number is not written.

FIG. 8 is a system configuration diagram when writing a program / control constant.

FIG. 9 is a flowchart of a transmission data instruction device when writing a program / control constant.

FIG. 10 is a flowchart of an external device when writing a program / control constant.

FIG. 11 is a flowchart by the first electronic device connected to the radio receiver when writing a program / control constant.

[FIG. 12] The second when writing a program / control constant
3 is a flowchart of the electronic device of FIG.

FIG. 13 is a side view of a vehicle including a conventional electronic control unit for a vehicle.

[Explanation of symbols]

2 vehicles 4 Vehicle electronic control unit 6 First electronic equipment 8 Second electronic equipment 10 External device 16 radio receiver 18 Receiving antenna 20 transmitting antenna

Claims (3)

[Claims] 1. A first receiving means capable of receiving control data of a plurality of vehicle-mounted electronic devices as a radio wave, and determining whether or not the control data received by the first receiving means is valid data. And a transmitting means for transmitting the data when the first data identifying means determines that the control data received by the first receiving means is valid data. A first electronic device is provided on the vehicle, and a communication unit is provided that enables serial communication between the plurality of vehicle-mounted electronic devices and the first electronic device. The first electronic device is the first electronic device. One electronic device is selected as the second electronic device from the plurality of vehicle-mounted electronic devices for each control data received by the first receiving means, and the second electronic device is selected from the first electronic device. The transmitted data can be Second receiving means for receiving from the stage,
An electronic control unit for a vehicle, comprising: a storage unit capable of writing the data received by the second receiving unit. 2. A first receiving means capable of receiving control data having at least a part of data of a plurality of vehicle-mounted electronic devices as a radio wave having a unique part for each specification, and the first receiving means. First data identifying means for determining whether or not the destination information of the control data and the unique data possessed by the vehicle side, and the destination information and the unique possessed by the vehicle by the first data identifying means A first electronic device provided with a transmission means for transmitting the data when it is determined that the data matches the data of 1., the plurality of vehicle-mounted electronic devices and the first electronic device. And a communication means for serially communicating with each other, wherein the first electronic device is any one of the plurality of vehicle-mounted electronic devices as a second electronic device for each control data received by the first receiving device. Select the electronic device The second electronic device determines whether the data received by the second receiving means can receive data that can be distinguished from other vehicles, and whether the data received by the second receiving means is necessary data. The second data identifying means for judging and the data received by the second receiving means when the second data identifying means judges that the data received by the second receiving means is necessary data. An electronic control unit for a vehicle, comprising: a writable storage unit. 3. The vehicle electronic control device according to claim 1, wherein the first electronic device is an electronic device connected to a radio receiver.