JP3438163B2 - In-vehicle electrical unit control method and system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle communication network (to be referred to as an in-vehicle LAN hereinafter) by connecting a plurality of electric units of an automobile.
The present invention relates to an in-vehicle electrical unit control method and system for performing control suitable for the system configured in a system that can be integratedly controlled by connecting the above.

[0002]

2. Description of the Related Art Conventionally, various electric equipment units are mounted in an automobile. The electrical unit is, for example, a seat control unit for controlling the front / rear or top / bottom of the driver seat or the reclining position, a steering control unit for controlling the tilt and telescopic for determining the steering position, and the angle of the left and right mirrors. It is a mirror control unit for doing so.

In recent years, a method has been developed in which a plurality of such electrical units are connected as an in-vehicle LAN and controlled as one system. One example is the car driving position function. This is to reproduce the position of the driver's seat, the position of the steering wheel, and the angles of the left and right mirrors as a whole by one-touch operation where the driver has stored them in advance.
In such a system, a master / slave control system is adopted. What is the master / slave control method?
In the case of the driving position, the master electrical equipment unit sends a command message to other slave electrical equipment units to perform integrated control as a system.

In this type of system, for example, some vehicles do not have a mirror control unit and some do not have a seat control unit, and the control target of the system is not necessarily uniform. Therefore, different systems are configured for each vehicle type. And it is necessary to correspond. Therefore, for example, a circuit for identifying the vehicle type has been added to the master electrical equipment unit so that the vehicle type can be identified and the system configuration can be made to correspond to each vehicle type.

[0005]

However, in such identification in which a circuit for identifying a vehicle type is added to the electrical component unit, even an electrical component unit having the same function must be manufactured as a different electrical component unit for each vehicle type. There has been a problem that the number of electrical component units to be manufactured is increased, which complicates the manufacturing process and inventory management. In addition, there is a problem that the cost increases because a circuit for identifying the vehicle type is added.

Therefore, it has been desired to realize a vehicle-mounted electrical unit control method and system that can be adapted to a system configured according to the vehicle type without being configured as a different electrical unit for each vehicle type.

[0007]

A method for controlling an on-vehicle electrical equipment unit according to the present invention is a method for connecting a plurality of on-vehicle electrical equipment units, each of which independently controls a movable part based on an instruction, through a communication network so as to function as a system. In-vehicle electrical unit control method capable of integrated control in
At least when power is supplied to each on-board electrical unit
Connection between the units stored in the on-board electrical unit
A step of initializing the relationship, and a step in which, when power is supplied to at least each on-vehicle electrical unit, a predetermined identification number for each type of on-vehicle electrical unit is transmitted by each on-vehicle electrical unit by including it in the message data. , When the destination in-vehicle electrical unit receives the message data, identifies the type of the in-vehicle electrical unit based on the identification number, stores the connection relation between the in-vehicle electrical units, and responds to the connection relation when operating as a system. And a process of performing integrated control. In the present invention, when power is supplied to at least the vehicle electrical units, each vehicle electrical
Initialize the connection relationship between units stored in the unit
Then, the communication data includes the identification number determined according to the type of the vehicle-mounted unit and transmits the communication data. Based on the identification number sent from each vehicle-mounted unit, identify the type of the vehicle-mounted electrical unit connected, store the identification number, store the connection relationship without adding a different circuit for each vehicle type, Performs system control according to the connection relationship.

Further, the vehicle-mounted electrical unit system according to the present invention is a vehicle-mounted electrical unit system in which a plurality of vehicle-mounted electrical units, each of which controls the position of a movable portion based on an instruction, are connected by a communication network and can be integrally controlled as a system. In the above, when power is supplied, message data with an address specified for each type of in-vehicle electrical unit for confirming connection is sent, and when a message for system control is received, the position stored in advance is stored. One or a plurality of slave electrical units for controlling, and a slave memory unit that stores a memory when power is supplied .
When the message data sent from one or more slave electrical equipment units is received , the connection relationship between the electrical equipment units is initialized, and the type of slave electrical equipment unit is identified and stored based on the source address in the message. And a master electric component unit that transmits message data for system control to the slave electric component unit based on the reproduction procedure when the reproduction procedure is determined and integrated control is performed. In the present invention, one or more slave electrical equipment units store when power is supplied.
After initializing the connection relationship between the onboard electrical components that are
Then, send a message to confirm the connection. The master unit is set in such a state that it recognizes that it is not connected to another slave electrical component unit. When the master unit receives a message transmitted from one or more slave electrical equipment units, it automatically identifies and stores the type of slave unit based on the source address included in the message, and determines the playback procedure. To do.
When performing integrated control as a system, message data for system control is transmitted to one or a plurality of slave electrical units based on the reproduction procedure thereof. When the slave electric component unit receives the message, the slave electric component unit performs the position control stored in advance.

[0009]

DETAILED DESCRIPTION OF THE INVENTION

Embodiment 1. FIG. 1 is a block diagram of an electrical component unit system for implementing a vehicle-mounted electrical component control method according to a first embodiment of the present invention. In the figure, reference numeral 10 denotes a steering control electric unit (hereinafter referred to as a steering unit), which not only performs a steering control function such as tilt and telescopic, but also performs a position control pre-stored in a driver at the time of a driving position function and other electric components. It has a master control function to control the unit. The steering unit 10 includes a master computer 11, a steering input circuit 12,
Steering output circuit 13, steering communication circuit 14
And a steering power supply circuit 15.

The master computer 11 executes at least a control program and carries out a control process, and a steering control section 11A, and an identification number (hereinafter referred to as an identification number) attached to the control program and an electric unit for steering function therein.
ROM 11B having a steering address),
A RAM 11C for storing an identification number transmitted from another unit, a steering position when performing a driving position function, an A / D converter 11D for converting an analog signal based on a voltage into a digital signal, and a timer for measuring time. It is composed of 11E. The steering input circuit 12 transmits to the master computer 11 a signal from a manual switch for operating the steering independently or a function switch for operating the driving position function. Further, the master computer 11 receives an analog signal representing the position of the steering wheel, which is input from a steering sensor (not shown).
Is to be sent to. The steering output circuit 13 is
The steering is controlled based on the steering control signal transmitted from the master computer 11. The steering communication circuit 14 serves as an interface portion in communication with another electric component unit (the electric seat unit 20 for controlling the seat in the present embodiment).
When receiving a message from another unit, the master computer 11 transmits necessary data to the master computer 11 (address of source unit and content data of message). Also, the master computer 1
When message data to be transmitted from 1 to another unit is transmitted, it is processed into a communication format and transmitted. When power is supplied from the battery of the automobile, the steering power supply circuit 15 receives power from the steering unit 10.
Supply the necessary power to. When power is supplied, the master computer 11 is reset by the power supply monitoring function to initialize the RAM 11C and the like.

Reference numeral 20 denotes an electric unit for controlling a driver's seat (hereinafter referred to as a seat unit), which receives a driving position control message from the computer 11 during the driving position function as well as the independent seat control function. It has a slave function that performs the position control function stored in advance in the driver. The seat unit 20 includes a seat slave computer 21, a seat input circuit 22, a seat output circuit 23, a seat communication circuit 24, and a seat power supply circuit 25.

The seat slave computer 21 executes at least a control program to perform control.
A, a ROM 21B having a seat control program and an identification number (hereinafter referred to as a seat address) attached to an electric unit for seat function, an identification signal transmitted from another unit, a driver for performing a driving position function R for storing the position of the seat
An AM 21C, an A / D converter 21D that converts an analog signal based on a voltage into a digital signal, and a timer 21E that measures time. The seat input circuit 22 transmits a signal from a manual switch for independently operating the driver seat and an analog signal indicating a position of the driver seat input from a seat sensor (not shown) to the seat slave computer 21. .
The seat output circuit 23 is the seat slave computer 2
The seat function is controlled based on the seat control signal transmitted from the No. 1. The seat communication circuit 24, like the steering communication circuit 14, serves as an interface portion in communication with another electric component unit (the steering control electric component unit 10 in the present embodiment). The seat power supply circuit 25 supplies power to the seat slave computer 21 when power is supplied from the battery of the vehicle. When power is supplied, the seat slave computer 21 is reset and initialized by the power supply monitoring function.

A communication line 40 connects the steering communication circuit 14 and the seat communication circuit 24. In this communication, for example, American Association of Automotive Engineers (SAE)
SAE-J1 which is a multiplex communication protocol adopted in
The 850 method is used. In the SAE-J1850 system, each electrical unit connected to the in-vehicle LAN is CSMA /
With the CD (Carrier Detection Multiple Access Method with Collision Detection) function, all electrical units can send equal messages. Therefore, each electrical unit sends a message as needed. In this embodiment, a basic master / slave control including a master unit and one slave unit will be described.

Next, the operation of the electric component unit when the battery is connected will be described. When power is supplied to the steering unit 10 from the battery of the automobile, the steering power supply circuit 15 resets the master computer 11 based on the power supply monitoring function to initialize the master computer 11. By this initialization, the connection state with other units stored in the RAM 11C is cleared, and it is recognized that there is no connection with other units. On the other hand, also in the seat unit 20, when power is supplied, the seat power supply circuit 25 resets the seat slave computer 21 based on the power supply monitoring function to initialize the seat slave computer 21. By this initialization, the connection state with other units stored in the RAM 21C is cleared, and it is recognized that there is no connection with other units. Further, the master computer 11 is caused to transmit a message for confirming the connection via the sheet communication circuit 24 and the like. This message includes at least the sheet address stored in the ROM 21B. The master computer 11 recognizes that the seat unit 20 is connected based on the seat address included in the connection confirmation message, and stores it in the RAM 11C.

Similarly, when the master computer 11 of the steering unit 10 which is a unit transmits a message to the seat slave computer 21 of the seat unit 20 which is a slave unit, at least the steering address stored in the ROM 11B is included. Send. In the seat slave computer 21,
Based on the steering address, it is recognized that the steering unit 10 is connected, and the RAM 21C
To remember.

As described above, according to the first embodiment,
RAM 11C of the steering unit 10 when power is supplied
Also, the RAM 21C of the seat unit 20 is initialized to clear the connection relationship between the electric component units, and the steering unit 10 and the seat unit 20 are determined for each type when communicating with other electric component units via the in-vehicle LAN. Since the unit that includes the address data and transmits it and receives it is designed to identify the connection relationship of the electrical unit based on the address data, it is not necessary to add a circuit for identifying the vehicle type in advance, so the cost is reduced. Since it is no longer necessary to separately manufacture electric components having the same function based on the vehicle type, it is not necessary to consider inventory management or the like.

Embodiment 2. FIG. 2 is a block diagram of an electrical component unit system for realizing the vehicle-mounted electrical component control method according to the second embodiment of the present invention. In the figure, those given the same reference numerals as those in FIG. 1 perform the same operations as those explained in the first embodiment, and therefore their explanations are omitted. Reference numeral 30 denotes an electric unit for controlling an electric mirror (hereinafter referred to as a mirror unit), and not only a single mirror control but also a position control stored in advance in a driver when a driving position control message is input from the master computer 11. It has a slave function to perform. The mirror unit 20 includes a mirror slave computer 31, a mirror input circuit 32, and a mirror output circuit 3.
3, a mirror communication circuit 34 and a mirror power supply circuit 35.

The mirror slave computer 31 executes at least a control program and controls the control section 31.
A, a ROM 31B having therein a seat control program and an identification number (hereinafter referred to as a mirror address) attached to an electric equipment unit having a mirror function, an identification signal transmitted from another unit, and a mirror for performing a driving position function RAM 31 for storing the position of
C, A / D converter 31D that converts an analog signal by voltage into a digital signal, and timer 3 that measures time
It is composed of 1E. The mirror input circuit 22 transmits to the mirror slave computer 31 a signal from a manual switch for independently operating the left and right mirrors and an analog signal input from a mirror sensor (not shown) indicating the positions of the left and right mirrors. Is. Mirror output circuit 3
3 controls the mirror function based on the mirror control signal transmitted from the mirror slave computer 31. The mirror communication circuit 34, like the steering communication circuit 14, serves as an interface portion in communication with other electrical units. The mirror power supply circuit 35 supplies power to the mirror slave computer 31 when power is supplied from the vehicle battery. When power is supplied, the mirror slave computer 31 is reset and initialized by the power supply monitoring function.

In this embodiment, in addition to the basic configuration of the unit and one slave unit as in the first embodiment, a mirror which becomes another slave unit is newly added in order to support different vehicle types. The system in which the unit 30 is connected will be described in more detail than the first embodiment, including not only the power supply but also the normal operation.

Next, the operation will be described. When power is supplied from the battery of the automobile to the steering unit 10, the connection state with the other unit stored in the RAM 11C is cleared, and it is recognized that there is no connection with the other unit. Further, the RAM 21C and RA are similarly applied to the seat unit 20 and the mirror unit 30.
The connection state of M31C is initialized. The computer of the slave unit, at least when powered,
A message is transmitted to the computer of the master unit (here, the master computer 11) via the communication circuit.

FIG. 3 is an example of a communication format transmitted from each communication circuit. This format is S
It is a format based on the AE-J1850 system.
The communication format includes a code section 41 and a transmission data section 42.
And a response address section 43. Table 1 describes the contents of each symbol. A method of designating a reception address is adopted for message transmission, and the communication circuit of each electrical unit receives a message transmission by having a physical address unique to each electrical unit and a functional address that can be assigned to each function. Address is your address (physical address or functional address)
It has a function to capture a message only when it matches and send it to a computer. In addition, it has a function called response transmission that returns its own physical address when it can be received normally in order to know whether the message transmission was successfully received.

[0022]

[Table 1]

In the code section 41, 41a is a communication start code, 41b is a cyclic code error correction code, 41c is a data end code, and 41d is a communication end code. In the transmission data section 42, 42a is a header A indicating the type of message to be transmitted, 42b is a header B designating a receiving (destination) address, 42 is a header C designating a source address, and 42d, 42e.
And 42f are the actual message data. The response physical address part 43 includes data of the received physical address of the electrical unit by the response transmission function. When there are a plurality of receiving electrical units, each physical address is included. The transmission of the message between each electric component unit is performed by this communication format, and the master electric component unit can receive all the messages from the slave electric component units.

Table 2 is a table of physical addresses and functional addresses. The address includes a physical address unique to the electric component unit and a functional address as a function of the system of the electric component unit. As the physical address, for example, 2h (h represents a hexadecimal number) is assigned to the steering unit, 3h to the seat unit, and 4h to the mirror unit. As the functional address, 1h is assigned to the master unit and Fh is assigned to the slave unit. Therefore, for example, 1h and 2h are assigned to the steering unit 10, which is a master unit, and the steering communication circuit 14 and the ROM 11 are allocated.
It is stored in B. The seat unit 20 has 3h
And Fh are assigned to the seat communication circuit 24 and ROM
21B is stored.

[0025]

[Table 2]

FIG. 4 is a flowchart of the message transmission timing from the slave unit to the master unit. A process in which the computer in the slave unit transmits a message to the master unit will be described with reference to FIG. It is determined whether or not the connection is started by the power supply when the battery is connected or the restart from the sleep state (S51).
If it is determined that the connection by power supply or restart has been started, the computer in the slave unit transmits message data for connection confirmation to each communication circuit. The communication circuit transmits the message to the steering unit 10, which is a unit (S52). If it is determined that the state is not the one at the start of the connection, it is determined whether the processing state has changed due to input of a signal from the manual switch or the like (S53). When the state has changed, the state change message is requested to be transmitted to the communication circuit and transmitted to the steering unit 10 (S54).
If there is no input and the state has not changed, it is determined whether the position is being controlled by the manual switch or the position is being stored or reproduced by the driving position function (S55). Further, it is determined whether or not the value of the timer for transmitting the operating message at a constant cycle is 0 (S56). When the position control operation is in progress and the timer value is 0, the in-operation message data is transmitted to the communication circuit and the steering unit 1
0 is sent the message (S57). Further, the timer is set to a predetermined value (S58), the countdown is performed, and when it is determined that the timer value is 0 again, if it is determined that the position control operation is in progress, the in-operation message is transmitted again. To

In addition to the message transmission from the slave unit to the master unit, transmission of a response message in response to the message transmission from the master unit can be considered.
The description is omitted here because it relates to communication after the connection relationship of the electrical units of the AN can be recognized.

FIG. 5 is a flow chart showing the processing for the master computer 11 to identify the slave units in the connection relationship. Here, a transmission source address having a physical address as data is used as the identification code. A method of identifying the connected slave unit will be described with reference to FIG. When the steering communication circuit 14, which is the communication circuit of the unit, determines that the message is sent to its own unit by the header B22b containing the destination address, the steering communication circuit 14 receives the message and sends the message data to the master computer 11. And send the source address. The master computer 11 uses the transmission source address as an identification code and determines whether or not it is "3h" indicating a sheet unit (S
61). If it is determined that the identification code is 3h, the RAM
The ID flag 3 is set in 11C (S62). If it is determined that the identification code is not 3, it is determined whether or not it is "4h" representing the mirror unit (S63). If it is determined that the identification code is 4h, the ID flag 4 is set in the RAM 11C (S64). The master computer 11 performs the identification processing of this connected unit every time a message is input so that the connection relationship can be identified even if another electrical unit is connected later. Although not normally done here, removing the electrical unit is treated as being performed when power is not being supplied from the battery, so the ID flag that was set once during power supply is There is no need to lower it.

The master unit identification signal is stored in the RAM of the slave unit so that when a message is transmitted from the master unit to the slave unit, the source address included in the message is stored similarly to the master computer 11. Leave.
As a result, the connection relationship in the system of the electrical equipment unit is set.

When a signal from a manual switch and an analog signal are input from the steering input circuit 12 as an instruction from the driver, the steering control section 11A causes the steering output circuit 13 to operate based on the control program stored in the ROM 11B. The steering control signal is output to and the steering position control is executed.
Even in the seat unit 20 or the mirror unit 30, since the independent position control by the manual switch has priority over the driving position function, when a signal and an analog signal for each position input are input from the manual switch via the input circuit. , Seat control unit 21A
Outputs a control signal to the output circuit based on the control program to execute the position control of the driver seat or the left and right mirrors.

When a signal from the function switch is input through the steering input circuit 13 as an instruction from the driver, the steering control section 11A causes the RO
Based on the control program stored in M11B, a driving position control message is transmitted to the seat communication circuit 24 via the steering communication circuit 14.
And RAM11C at the time of driving position function
In order to reproduce the steering position stored in, the steering position control signal is output and the steering position control is executed.

In the computer of the slave unit, when a message for driving position control is input from the communication circuit before the signal from the manual switch is input from the input circuit, the control unit displays the position stored in the RAM at the driving position. A control signal is output to the output circuit in order to reproduce, and the position control of the driver seat or the left and right mirrors is executed.

FIG. 6 is a flow chart showing the reproduction procedure selection processing of the master computer 11 when the driving position function is selected. When an input signal of a function switch for operating the driving position function is input, the steering control unit 11A causes the RAM 1 to operate.
It is determined whether the ID flag 3 is set in 1C (S71). Since the seat unit 20 has priority over the mirror unit 30 even in the same slave unit,
If the ID flag 3 is not set, error processing is performed and reproduction procedure processing is not executed (S75). I
If the D flag 3 is set, then it is determined whether the ID flag 4 is set in the RAM 11C (S72). If ID flag 4 is set, RO
The reproduction procedure A based on the program stored in the M11B is executed (S73), and the messages for the driving position control are transmitted in the order shown in the reproduction procedure A to the target slave unit (in the present embodiment, the seat unit). 20 or the mirror unit 30). In the slave unit, when the message is input, the driver reads the position stored by the driving position function from the RAM and executes the position control by the output circuit. If ID flag 4 is not set,
The reproduction procedure B based on the program stored in the ROM 11B is executed (S74), and the driving position control message is transmitted to the slave unit (the seat unit 20 in this embodiment). In the seat unit 20, when a message is input, the position stored by the driver is read from the RAM 21C, and driver seat control is executed.

Also, when performing the processing for storing the steering, seat, and mirror positions of the driving position function, which is performed on the premise of performing the reproduction procedure processing, the processing for identifying the slave unit to which the master computer 11 is connected is Since the same processing as this reproducing procedure is performed, the description is omitted.

As described above, according to the second embodiment,
RAM 11 of the steering unit 10 when power is supplied
C, the RAM 21C of the seat unit 20 and the RAM 31C of the mirror unit 30 are initialized to clear the connection relationship between the electrical units, and at least the seat unit 20 and the mirror unit 30, which are slave units, are used to confirm the connection in the in-vehicle LAN. Send the message transmission to the steering unit 10, which is the master unit,
Further, the steering unit 10 identifies the type of the slave unit connected by the identification signal determined for each type of the electrical equipment unit based on the transmission source address of the message, sets and stores the ID flag of the RAM 11C, and drives it. When the position function is instructed by the driver, the driving position reproduction procedure according to the connected unit is determined depending on whether or not the ID flag is set. Since it is not necessary to manufacture different electric component units each having a circuit for identifying the vehicle type for each vehicle type, the cost can be suppressed and the same production line can be used, so that inventory management and the like can be reduced. Further, since the connected electrical equipment unit is identified by the address determined for each type of electrical equipment unit, the identification can be performed without using a special communication format.

Embodiment 3. Although the slave unit is described as the seat unit 20 in the first embodiment and the seat unit 20 and the mirror unit 30 are described in the second embodiment, the present invention is not limited thereto. Alternatively, it is possible to increase the number of slave units. At that time, in FIG. 4, the judgment of reception of the identification code is increased. Also, in FIG. 5, the reproduction procedure is increased.

Embodiment 4. In addition, the above-mentioned embodiment,
Although the configuration of the unit at the time of manufacturing the vehicle has been described, the present invention is not limited to this, and the function can be easily added not only at the time of manufacturing but also as an option later.

Embodiment 5. Further, in the above-described embodiment, the example in which the RAM is used as the memory for temporary storage in the computer of each electric component unit has been described.
The present invention is not limited thereto, and for example, EEP
It is also possible to store it in a non-volatile memory such as a ROM.

Embodiment 6. Further, in the above-described embodiment, all the units are configured by computers, but the present invention is not limited to this. Except for the computer 10, the slave unit computers can be identified by other units. It can also be realized by an apparatus that can perform similar control.

[0040]

As described above, according to the present invention, at least when electric power is supplied to each on-vehicle electric component unit, each on-vehicle electric component unit stores the stored connection relation between the units.
The type of the connected in-vehicle electrical unit is identified based on the identification number that is initialized and transmitted from each in-vehicle electrical unit included in the communication data and is determined according to the type of that in-vehicle unit. Since the unit stores the identification number, the connection relation of the unit can be stored without adding a different circuit for each vehicle type, and the system control according to the connection relation can be performed, resulting in cost reduction. Can be achieved. Further, since it is not necessary to separately manufacture the electric component unit having the same function based on the vehicle type, it is not necessary to consider inventory management or the like in the electric component unit having the same function.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric component unit system for realizing a vehicle-mounted electric component control method according to a first embodiment of the present invention.

FIG. 2 is a block diagram of an electric component unit system for realizing a vehicle-mounted electric component unit control method according to a second embodiment of the present invention.

FIG. 3 is a diagram illustrating an example of a communication format transmitted from each communication circuit.

FIG. 4 is a flowchart of message transmission timing from a slave unit to a master unit.

FIG. 5 is a flowchart showing a process for the master computer 11 to identify a slave unit in a connection relationship.

FIG. 6 is a flowchart showing a reproduction procedure selection process of the master computer 11 when the driving position function is selected.

[Explanation of symbols]

10 Steering unit 11 master computer 11A control unit 11B ROM 11C RAM 11D A / D converter 11E timer 12 Steering input circuit 13 Steering output circuit 14 Steering communication circuit 15 Steering power circuit 20 seat units 21-seat slave computer 21A control unit 21B ROM 21C RAM 21D A / D converter 21E timer 22 sheet input circuit 23 Sheet output circuit 24 seat communication circuit 25 seat power circuit 30 mirror unit 31 mirror slave computer 31A control unit 31B ROM 31C RAM 31D A / D converter 31E timer 32 mirror input circuit 33 Mirror output circuit 34 Mirror communication circuit 35 Mirror power circuit 40 communication lines

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazushige Ochi 1-4-1 Chuo, Wako-shi, Saitama Inside of Honda R & D Co., Ltd. (56) Reference JP-A-3-295735 (JP, A) JP Hei 3-139025 (JP, A) JP-A-4-345237 (JP, A) JP-A-4-160940 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G05B 15 / 00-15/02 B60R 16/00-17/02

Claims (4)

(57) [Claims] 1. A vehicle-mounted electrical unit control method capable of performing integrated control when a plurality of vehicle-mounted electrical units that individually control movable parts based on an instruction are connected via a communication network and function as a system, At least when power is supplied to each on-board electrical unit
Between the units stored in the in-vehicle electrical unit
The step of initializing the connection relationship and at least when each on-vehicle electrical unit is supplied with electric power, each on-vehicle electrical unit sends a message including a predetermined identification number for each type of the on-vehicle electrical unit. And the destination in-vehicle electrical unit receives the message data, identifies the type of the in-vehicle electrical unit based on the identification number, stores the connection relationship between the in-vehicle electrical units, and as the system. And a step of performing integrated control according to the connection relationship when functioning, a vehicle-mounted electrical unit system control method. 2. The on-vehicle electrical unit control method according to claim 1, wherein the identification number is a number based on an address determined according to the type of each on-vehicle electrical unit. 3. A master electrical equipment unit serving as one master and one or a plurality of slave electrical equipment units serving as slaves are connected by a communication network, and each electrical equipment unit comprises:
Based on the instruction, it is possible to independently control each of the movable parts, and the master electrical component unit sends message data for controlling to the slave electrical component unit, and the slave electrical component unit is based on the message. In the vehicle-mounted electrical unit control method, in which the master electrical unit is capable of performing integrated control of the unit as a system by executing control in accordance with the above method, the master electrical unit is at least supplied with power. And a step in which the slave unit initializes the stored connection relationship between the units, and at least when power is supplied to each electrical unit, an identification number predetermined for each type of the electrical unit is added to the slave unit. The electrical unit sends to the master electrical unit. The master electrical component unit receives the transmitted identification number, identifies the type of the slave electrical component unit based on the identification number, and stores the connection relationship between the electrical component units; When the unit performs integrated control,
Selecting a control procedure based on the stored connection relationship and transmitting the message data to each slave electrical component unit based on the selected control procedure; and each slave electrical component unit transmitting the message electrical component to the transmitted message electrical component. And a step of performing control based on the control method. 4. An in-vehicle electrical unit system in which a plurality of in-vehicle electrical device units, each of which controls a position of a movable part based on an instruction, are connected by a communication network and can be integrally controlled as a system, at least when power is supplied. , One or more slaves that perform message control with a predetermined address for each type of vehicle-mounted electrical unit for confirming the connection, and that perform position control stored in advance when a message for system control is received The electrical unit and at least the stored slate when power is applied .
When the message data transmitted from the one or more slave electrical unit is received, the type of slave electrical unit is identified based on the source address in the message. A master electrical component unit for transmitting message data for system control to the slave electrical component unit based on the playback procedure when storing and determining the playback procedure and performing integrated control. In-vehicle electrical unit system.