JPH0856063A - Vehicle control device - Google Patents

Abstract

PURPOSE:To provide a vehicle control device capable of miniaturizing and cutting down the cost of said device by us a subboard making common circuits a sub-board for piurality of vehicle models. CONSTITUTION:This vehicle control device is provided with a subboard 7 for mounting common circuit as well as a mother board 8 for mounting an exclusive circuit and the subboard 7 corresponding to the vehicle models. Besides interfaces corresponding to arbitrary vehicle models are fitted to expansion slots 10-13 while the subboard 7 is mounted on the mother board 8. On the other hand, any signals from censors etc., are inputted to a CPU 3 through the intermediary of an interface 2 and the other interface fitted to the expansion slots 10-13. At this time, the CPU 3 outputs the signals controlling the objective elements of control according to the inputted signals. A control circuit 4 drive- controls a motor according to the control signals. Furthermore, the control signals are outputted to an actuator etc., through the intermediary of an ouput circuit 5 or the interfaces fitted to the slots 10-13 so that the actuator etc.,may be actuated according to the control signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle controller for processing signals from various sensors and switches, and more particularly to a vehicle controller for a plurality of vehicle types.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a conventional vehicle control device. The vehicle control device has a substrate 1,
On the substrate 1, an input interface 2 for inputting signals from switches, sensors, etc., a CPU 3 for controlling a controlled object based on the input signals, and a control circuit 4 for driving and controlling a motor by the control signals from the CPU 3. , CPU3
An output circuit 5 that outputs a control signal from the device to a motor, an actuator, and the like, and a power supply circuit 6 that supplies electric power to each unit are mounted. The vehicle control device is configured to support all vehicle types.

Next, the operation will be described. Electric power is supplied from the power supply circuit 6 to each unit. Then, signals from switches, sensors, etc. are sent to the CP via the input interface 2.
Input to U3. The CPU 3 outputs a control signal for controlling a control target such as a motor or an actuator based on the input signal. Control circuit 4 for receiving this control signal
Controls the drive of the motor based on this control signal. Further, this control signal is output to the motor, actuator, etc. by the output circuit 5, and the motor, actuator, etc. operate based on this control signal.

[0004]

As described above, in the conventional vehicle control device, the common circuit common to all vehicles and the plurality of types of dedicated circuits corresponding to each vehicle type are all arranged on the substrate 1. Since it is configured to be compatible with all vehicle types, there is a problem that the size of the board itself becomes large and the position where the board is arranged is limited.

The present invention has been made in order to solve the above problems, and a vehicle control in which the size of the device and the cost can be reduced by sub-boarding a common circuit common to a plurality of vehicle types. The purpose is to provide a device.

[0006]

According to a vehicle control device of the present invention, a common circuit common to a plurality of vehicle types is mounted on a sub board, and a dedicated circuit corresponding to an arbitrary vehicle type is detachably mounted on a motherboard. The sub board is mounted on a mother board.

[0007]

In the vehicle control device according to the present invention, the common circuit common to a plurality of vehicle types is mounted on the sub-board, the dedicated circuit corresponding to any vehicle type is detachably mounted on the motherboard, and the sub-board is mounted on the motherboard. Since it is mounted, the area occupied by the substrate can be reduced, the device can be downsized, and it is not necessary to mount an unnecessary circuit on the mother board, and the cost can be reduced.

[0008]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the vehicle control device is equipped with a sub-board 7 having a common circuit common to a plurality of vehicle types, a dedicated circuit corresponding only to each vehicle type, and a motherboard 8 capable of having the sub-board 7 mounted thereon. And a dedicated circuit corresponding to any vehicle type is mounted on the motherboard, and the sub-board 7 is mounted on the motherboard 8.

As shown in FIG. 2, the sub board 7 has an interface 9 for inputting a signal from a sensor or the like, a CPU 3 for controlling a control target based on a signal input through the interface 9, and a control from the CPU 3. A control circuit 4 for driving and controlling the motor by a signal is mounted. In addition, the sub board 7 has a plurality of terminals a to f,
The terminal a is connected to the interface 9, the CPU 3, and the control circuit 4, and the terminal b is connected to the interface 9. Further, the terminals c, e, f are connected to the CPU 3, and the terminal d is connected to the control circuit 4.

On the mother board 8, a power supply circuit 6 connected to the terminal a and supplying electric power to the respective parts, an output circuit 5 connected to the terminal c and outputting a control signal from the CPU 3 to an actuator or the like, and a terminal expansion slots 10 and 11 connected to e and capable of mounting dedicated circuits corresponding to respective vehicle types, and expansion slots capable of mounting dedicated circuits connected to terminals f and corresponding only to respective vehicle types, such as interfaces and drivers Slots 12 and 13 are mounted. In addition, the motherboard 8 has a plurality of terminals A to
F, the terminal A is connected to the power supply circuit 6, and the terminal B is connected to the terminal b. Furthermore, the terminal C is connected to the output circuit 5, and the terminal D is connected to the control circuit 4 at the terminal d. The terminal E is connected to the expansion slots 10 and 11, and the terminal F is connected to the expansion slot 1
2 and 13 are connected.

For example, as shown in FIG. 3, BAT, IGN, GND, solar radiation sensor,
Outside temperature sensor, motor 1 output plus, motor 1 output minus, motor 2 output plus, motor 2 output minus, R
When connecting / DEF SW and vehicle speed sensor, BAT, IGN, GND, solar radiation sensor, outside air temperature sensor, motor 1 output plus and motor 1 output minus are connected in common for all vehicle types A to F. The corresponding interface 9, control circuit 4, etc. are mounted on the sub board 7. Further, since the motor 2 output plus, the motor 2 output minus, the R / DEF SW, and the vehicle speed sensor are dedicated circuits corresponding to only specific vehicle types, the expansion slot 10,
A predetermined interface or the like is attached to 11, 12, and 13 to connect them. In the vehicle types A and B, in order to connect the motor 2 output plus and the motor 2 output minus, the output interface corresponding to the motor 2 output plus is installed in the expansion slot 10, and the output interface corresponding to the expansion slot 11 motor 2 output minus is provided. Installing. Further, in the vehicle types E and F, since the vehicle speed sensor is connected, the expansion slots 10 to 1
An interface corresponding to the vehicle speed sensor is attached to any one of the three.

Next, the operation will be described. An interface corresponding to an arbitrary vehicle type is mounted in the expansion slots 10 to 13 of the motherboard 8 and the sub board 7 is mounted on the motherboard 8. At this time, since the program differs depending on the function of each vehicle type, the program corresponding to the vehicle type is written in the CPU 3. Then, the motherboard 8 is held at a predetermined position, and the terminals A to F are electrically connected to another device. Then, power is supplied from the battery to the power supply circuit 6 via the terminal A, converted into a predetermined voltage by the power supply circuit 6, and power is supplied from the power supply circuit 6 to each part on the sub board 7. Then, signals from switches, sensors, etc. are input to the CPU 3 via the terminals B, b and the input interface 2. The CPU 3 outputs a control signal for controlling the controlled object based on the input signal. The control circuit 4 which receives this control signal drives and controls the motor based on the control signal via the terminals d and D. Further, this control signal is output from the output circuit 5 to the actuator or the like via the terminal C, and the actuator or the like operates based on this control signal. Further, the device connected to the terminals E and F sends the control signal output from the CPU 3 to the expansion slot 1
Received via the interface attached to 0-13,
It is driven based on a control signal, or sends a detection signal or the like from the terminals E and F to the CPU 3 via an interface mounted in the expansion slots 10 to 13.

[0013]

As described above, according to the present invention, the common circuit common to a plurality of vehicle types is mounted on the sub board, and the dedicated circuit corresponding to any vehicle type is detachably mounted on the motherboard. Since the sub board is configured to be mounted on the board, the size of the board can be reduced, the device can be downsized, and it is not necessary to mount an unnecessary circuit on the mother board, and the cost can be reduced. There is. As a result, when designing vehicle control devices for different vehicle types, only the motherboard needs to be designed, the number of design steps can be reduced, and the cost can be reduced.

Since the sub board which is a small current system and the mother board which is a large current system are separated from each other, the influence of noise can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a vehicle control device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a vehicle control device according to an embodiment of the present invention.

FIG. 3 is a diagram showing devices connected to respective vehicle types.

FIG. 4 is a block diagram showing a conventional vehicle control device.

[Explanation of symbols]

 3 CPU 4 Control circuit 5 Output circuit 6 Power supply circuit 7 Sub board 8 Motherboard 9 Interface 10-13 Expansion slots af, AF terminals

Claims (1)

[Claims] 1. A sub-board having a common circuit common to a plurality of vehicle types, and a motherboard to which a dedicated circuit corresponding only to each vehicle type can be detachably mounted and on which the sub-board can be mounted. A vehicle controller.