JP2000184466A - Wiring system for input/output device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To miniaturize a control module and to reduce the weight of electric wires between the control module and input/output devices by linking plural input/output modules together with a control signal line against the control module. SOLUTION: The output devices of turn signal lamps 17 and 20 and tail amps 18 and 19 are connected to a rear integrated module(RIM) 6 being a control module through output modules 13-16. RIM 6 and the respective modules 13-16 are connected by control signal lines CL. The control signal lines CL connect the output modules 13-16 by series connection, namely, in a string. Since power is supplied to the control modules of VCM 3 and FIM 7 by a power line PL, a power source line can be reduced. Since the output modules 13-16 are connected in the string, the number of connection points of connectors can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring system for an input / output device of a vehicle, and more particularly, to a method of supplying power from a power source such as a battery of an automobile or the like to a plurality of electric loads according to turning on / off of a switch. The present invention relates to a wiring system for an input / output device of a vehicle suitable for a vehicle.

[0002]

2. Description of the Related Art In a conventional vehicle power supply device, for example, a vehicle power supply device, in order to supply electric power from a battery to electric loads such as lamps, motors, sensors, and the like, the electric power is supplied between each electric load and the battery. Are connected by a power supply line. Modern vehicles have a higher number of electrical loads than traditional vehicles, and as a result,
The number of power lines is increasing. In addition, since the power supply line needs to be connected not only between each electric load and the battery, but also with a switch for controlling the electric load,
The total extension distance of the power line has also become longer. An increase in the number of power supplies and an increase in the total extension distance lead to an increase in the weight of the vehicle body, which deteriorates fuel efficiency.

[0003] Therefore, for example, International Publication No. 96/265.
As described in pamphlet No. 70 (1996), a plurality of relay circuits (control modules) are connected to a loop-shaped power supply line, and a plurality of electric loads are connected to each of these relay circuits to reduce power. Supplies have been proposed.

[0004]

However, the control modules and the electric loads are connected one-to-one, and the number of electric loads is increasing in order to improve the performance of automobiles. Therefore, the number of wires and the weight of the wires between the battery and the control module are known from WO 96/26570.
However, there is a problem that the wire weight between the control module and the electric load has not been reduced yet.
Also, if the connection between the control module and the electric load is made one-to-one, the number of connection contacts of the connector increases in proportion to the number of loads,
Even if the size of the control module is reduced due to the high integration of the electric circuit, the number of contacts of the connector is increased, and thus the control module cannot be downsized.

An object of the present invention is to provide a wiring system for a vehicle input / output device that can reduce the size of a control module and reduce the weight of electric wires between the control module and the input / output device.

[0006]

(1) In order to achieve the above object, the present invention comprises a control module and an input / output module to which a plurality of input / output devices are respectively connected. The plurality of input / output modules are connected in a daisy chain by control signal lines. An object of the present invention is to reduce the size of the control module and to reduce the weight of the electric wire between the control module and the input / output device.

(2) In the above (1), preferably,
The control signal line is a signal line for transmitting control data, device address data, and a clock signal.

(3) In the above (2), preferably,
The control data output from the control module is output in the order of the input / output devices connected in series.

(4) In the above (2), preferably,
The input / output module outputs a pulse signal indicating device address data output from the control module,
When the input device transmits or receives the output device, the duty ratio of the pulse signal is changed.

(5) In the above (1), preferably,
The control module compares a signal output from the control module with a returned input signal to confirm that transmission and reception are being performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Wiring of a vehicle input / output device according to one embodiment of the present invention will be described below with reference to FIGS. First, the overall configuration of the vehicle input / output device wiring system according to the present embodiment will be described with reference to FIG. FIG. 1 is a system block diagram showing the overall configuration of a wiring system for a vehicle input / output device according to an embodiment of the present invention.

The battery 1 is connected via a power line PL to a front integration module (FIM) 7, a body control module (BCM) 3, a driver door module (DDM) 4, and a rear integration module (RIM). 6) and supplies power to each of the modules 7, 6, and 3.

A front integrate module (FIM) 7 is installed in front of the engine room.
The FIM 7 is connected to input means such as a turn signal lamp, such as a burnout diagnosis signal, and is also connected to lamps such as left and right headlamps and turn signal lamps and electric loads such as horns. The FIM 7 has a built-in microcontroller.

Body control module (BC)
M) 3 is installed near the dashboard. BCM3
The switch is connected to input means such as a switch near the steering wheel and a remote control receiving circuit, and is also connected to an electric load such as an indicator, a solenoid, a buzzer, and a lamp serving as an interior light. The BCM 3 has a built-in arithmetic processing unit (CPU).

[0015] Rear integrated module (RI
M) 6 is installed behind the rear seat. RIM6 is
Input means such as power window switches provided on the left and right doors on the rear seat side are connected, and motors such as a power window motor and a door lock motor, and left and right turn signal lamps 17 and 20 are provided.
And electric loads such as solenoids for opening the trunk, and lamps such as the taillights 18 and 19. In the present embodiment, the turn signal lamps 17 and 2
Output devices such as 0 and tail lights 18 and 19 are output from the RIM 6 via output modules 13, 14, 15 and 16.
It is connected to the. RIM 6 and each output module 13,
14, 15, and 16 are connected by a control signal line CL. The control signal line CL is connected to the output modules 13 and 1
4, 15, and 16 are connected in series, that is, connected in a daisy chain. The power line PL is connected to each of the output modules 13, 14, 15, and 16, and stops the supply of power to the lamps 17, 20, 18, and 19 as output devices by the operation of a switch in the output module. The detailed configuration and operation of the output modules 13, 14, 15, 16 will be described with reference to FIG. The RIM 6 has a built-in microcontroller.

Further, a driver door module (DDM) 4 is installed inside the door on the driver's seat side.
The DDM4 is an output device to which input devices such as a power window switch and a door mirror switch are connected via an input module, and which is an electric load such as a motor such as a power window motor and a door lock motor. Are connected via an output module.

Although not shown, motors such as power window motors and door lock motors and output devices such as solenoids connected to the RIM 6 are also connected to the RIM 6 via output modules. I have. An input device such as a turn signal lamp connected to the FIM 7 for diagnosing a broken ball of a turn signal lamp is connected via an input module. An output device, which is a load, is connected via an output module. Similarly, an input device such as a switch near the steering wheel or a remote control receiving circuit connected to the BCM 3 is connected via an input module, and is an electric load such as an indicator, a solenoid, a buzzer, or a lamp serving as a vehicle interior light. The output device is connected via an output module.

Further, although not shown, the power line P
L has a passenger door module (PDM)
Are also connected, and power is supplied from the battery 1. PD
M is installed inside the door on the driver's seat side. PDM is
Input devices such as power window switches and door mirror switches are connected via input modules, and output devices which are electric loads such as motors such as power window motors and door lock motors are output. Connected via module.

A signal input from the input device to a control module other than the BCM 3 via the input module is:
The BCM is controlled by a built-in microcontroller of each control module,
3 is taken into the CPU inside. BCM3 CPU
Performs necessary signal processing, and transmits the signal to each control module via a signal line. The control module controls an output device via the output module.

In the present embodiment, since the control modules such as the BCM 3 and the FIM 7 supply power through the power line PL, the number of power lines can be reduced.
Output modules 13 and 1 for controlling output devices
4,15,16 are connected by rosary
Since only two control signal lines CL are output from M6,
The number of contacts of the connector of the RIM 6 can be reduced.

Next, the principle configuration of the wiring system for the input / output device of the vehicle according to the present embodiment will be described with reference to FIG. FIG. 2 is a block diagram showing a basic configuration of a wiring system for a vehicle input / output device according to an embodiment of the present invention.

In the example shown, the microcontroller 60
Are output modules 61 and 63 and an input module 62
, Two lamps 64 and 66 as output devices
And one switch 65 as an input device. The microcontroller 60 has an arithmetic function,
It has a port that can perform data transfer with an external device using a pulse signal. The microcontroller 60 includes pulse output ports 77 and 78 as transfer terminals for pulse signal data.
, Pulse input ports 79 and 80, and a clock signal output terminal C.

The address signal 69 output from the pulse output port 78 of the microcontroller 60 and the data signal 70 output from the pulse output port 77 are input to the input terminal of the output module 61. Next, the address signal 71 and the data signal 72 output from the output terminal of the output module 61 are input to the input terminal of the input module 62. Further, the address signal 73 and the data signal 74 output from the output terminal of the input module 62 are input to the input terminal of the output module 63. The address signal 75 and the data signal 76 output from the output terminal of the output module 63 are respectively
Are input to the pulse input ports 79 and 80. The clock signal 68 output from the clock signal output terminal C of the microcontroller 60 is output to the output module 61, respectively.
, A common terminal of the input module 62, and a common terminal of the output module 63. The positive terminal of the battery 1 is connected to the power terminal VB of the microcontroller 60 and the output module 6 by the power line PL.
1 and a common terminal of the input module 62 and a common terminal of the output module 63, and supplies power in a bus format.

Next, the configuration of the output module used in the wiring system for the input / output device of the vehicle according to the present embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing a configuration of an output module used in a wiring system for a vehicle input / output device according to an embodiment of the present invention.

The output module 61 has an output logic circuit 61A and an output circuit 61B. Output circuit 61
B is composed of a semiconductor switching element such as a power MOS-FET. The output logic circuit 61A
The detailed configuration will be described later with reference to FIG.

When its output module is designated by the address signal 69 input to the analog input terminal A-I, the output logic circuit 61A outputs a signal based on the data signal 70 input to the digital input terminal D-I. A control output OUT for turning on / off the semiconductor switch element in the output circuit 61B is output. The output circuit 61 has a control output O
The power is turned on / off based on the UT, and the power supplied from the power line PL via the terminal P is supplied to the lamp 64 or cut off. The clock terminal C has a clock signal 68
Enter.

The output logic circuit 61A outputs an address signal 71 and a data signal 72 from the analog output terminal A-O and the digital output terminal D-O without changing the address signal 69 and the data signal 70 for other input / output modules. Output as The output module 63 shown in FIG. 2 has the same configuration as the output module 61.

Next, the configuration and operation of the output logic circuit 61A used in the output module 61 of the vehicle input / output device wiring system according to the present embodiment will be described with reference to FIGS. FIG. 4 is a block diagram showing a configuration of an output logic circuit used in an output module of a wiring system for an input / output device of a vehicle according to an embodiment of the present invention, and FIG. 5 is a time chart illustrating an operation of an output logic circuit used in an output module of a wiring system of an output device.

As shown in FIG. 4, the output logic circuit 61
A is a 6-bit address shift register 220;
Data register 221, latch pulse width detection circuit 22
2, a reset signal detection circuit 223, a data latch circuit 225, a logic circuit 226, and a data latch flag output circuit 235.

The address shift register 220 shifts an address signal input from the address input terminal 230 to the data terminal D by 6 bits using a clock signal input to the clock terminal C, and shifts the address signal by an address output terminal 233.
Output from The data register 221 holds the data signal input from the data input terminal 231 to the data terminal D, and inverts and outputs the value. The reason for inversion will be described later.

The latch pulse width detection circuit 222 detects the pulse width of an address signal input from the address input terminal 230 to the data terminal D. Here, as described later with reference to FIG. 5, the address signal has a duty of 2/3.
Pulse signal (High level is width of 4 clocks)
And a duty 1/3 pulse signal (High level has a width of two clocks), and detects that an address signal of a duty 2/3 pulse has been input. The reset signal detection circuit 223 detects a reset signal from an address signal input from the address input terminal 230. In addition,
As described later with reference to FIG. 5, the reset signal is a low-level signal for 6 bits.

The data latch circuit 225 latches the data signal input to the data input terminal 231 according to the output signal of the logic circuit 226. The logic circuit 226 outputs a high-level output when the output of the latch pulse width detection circuit 222 is at a low level and the output of the data latch flag circuit 235 is at a high level. The data latch flag output circuit 235 is set by the output of the latch pulse width detection circuit 222,
Reset at output 23.

Next, the operation of the output logic circuit 61A according to the present embodiment will be described with reference to FIGS. 5A shows the clock signal 68 shown in FIG. 2, FIG. 5B shows the address signal 69 shown in FIG. 2, and FIG. 5C shows the clock signal 68 shown in FIG. , The data signal 70 shown in FIG. FIG. 5 (D)
5 shows the address signal 71 shown in FIG.
(E) shows the data signal 72 shown in FIG.
FIG. 5F shows the address signal 73 shown in FIG. 2, and FIG. 5G shows the data signal 7 shown in FIG.
4 is shown. FIG. 5H shows the address signal 75 shown in FIG. 2, and FIG. 5I shows the data signal 76 shown in FIG.

As shown in FIG. 5B, the address signal 69 output from the microcontroller 60 is composed of four slots from 0 to 3 slots, and is a signal that is repeated. One slot is shown in FIG.
As shown in (A), it has six clock widths.
As shown in FIG. 2, when the output module 61, the input module 62, and the output module 63 are sequentially connected in a daisy chain from the microcontroller 60, 1
The slot acts as an address signal designating the output module 61, the two slots act as address signals designating the input module 62, and the three slots act as address signals designating the output module 63. 1
The slots 3 to 3 are signals of ／ duty (High level is equivalent to 4 clocks, where one slot is equivalent to 6 clocks, and High level is equivalent to 4 clocks). The 0 slot is a signal whose Low level is continuous for 6 clocks, and is a signal for resetting the output logic circuit 61A and the input logic circuit.

When the address signal of slot 0 in FIG. 5B is input to the address input terminal 230 shown in FIG. 4, the reset signal detecting circuit 223 outputs L for six clocks.
Since the signal is at the low level, it is detected that the reset signal has been input, and the output Q is set to the high level. The output Q resets the data latch flag circuit 235.

Next, when the address signal of one slot shown in FIG. 5B is input to the address input terminal 230 shown in FIG. 4, the latch pulse width detection circuit 222 determines that the High level is for four clocks. , The output Q is set to a high level. The output Q causes the data latch flag circuit 2
35 is set, and the output of the logic circuit 226 becomes High level.

When the output of the logic circuit 226 goes high, the data latch circuit 225 switches to the data input terminal 2
The data input from 31 is latched. That is, FIG.
The data (lamp 0 data) of one slot in (C) is latched. When the lamp 0 data is at the Low level, if the lamp 64 shown in FIG. 3 is to be turned off, the output Q of the data latch circuit 225 is output from the output terminal OUT205, and the output circuit 61B shown in FIG. Is turned off, and the power supply to the lamp 64 is cut off.

When the output of the logic circuit 226 goes high, the address shift register 220 resets bits 2-5. Therefore, the address signal 71 output from the address output terminal 233 is
As shown in one slot (D), the signal is converted into a signal of 1/3 duty. In the figure, ● indicates that the duty is 2
This indicates that conversion from / 3 to 1/3 has been performed. In other output circuits and input circuits, the duty of the address signal is 2/3.
At this time, since it is determined that the address signal designates itself, by converting the duty to 1/3,
The address signal of one slot is not used as an address signal for specifying another input / output module.

When the output of the logic circuit 226 becomes High level, the data register 221 converts the data signal (data of one slot in FIG. 5C) input from the data input terminal 231 into FIG. As shown, the data is inverted and output from the data output terminal 234. Since the inverted data is finally returned to the microcontroller 60, the microcontroller 60 compares the inverted data with the first output state. It can be determined that the control based on the data has been executed.

Next, the configuration of the input module used in the wiring system of the input / output device of the vehicle according to the present embodiment will be described with reference to FIG. FIG. 6 is a block diagram showing a configuration of an input module used in a wiring system for a vehicle input / output device according to an embodiment of the present invention.

The input module 62 has an input logic circuit 62A and an input circuit 62B. Input circuit 62
B is composed of a pull-up resistor RPU connected to the power line PL. The detailed configuration of the input logic circuit 62A will be described later with reference to FIG.

When the input logic circuit 62A specifies its own input module by the address signal 71 input to the analog input terminals AI, the input logic circuit 62A operates as follows.
Using B, the o on / off state of the switch 65 is fetched from the input terminal IN. The clock signal 68 is input to the clock terminal C.

The input logic circuit 62A is provided with an address signal 71 and a data signal 72 for other input / output modules, similarly to the output circuit 61A described in FIG.
Are directly supplied from the analog output terminal A-O and the digital output terminal DO to the address signal 73 and the data signal 74.
Output as

Next, the configuration and operation of the input logic circuit 62A used in the input module 62 of the vehicle input / output device wiring system according to the present embodiment will be described with reference to FIGS. FIG. 7 is a block diagram illustrating a configuration of an input logic circuit used in an input module of a wiring system for a vehicle input / output device according to an embodiment of the present invention.

As shown in FIG. 7, the input logic circuit 62
A is a 6-bit address shift register 200;
Data register 201, select circuit 202, latch pulse width detection circuit 203, reset signal detection circuit 2
04, a 6-bit data select register 205,
A data latch circuit 206 and a data latch flag output circuit 207 and a logic circuit 208 are provided.

The address shift register 200 shown in FIG.
Similarly to the address shift register 220 shown in FIG. 2, the address signal input from the address input terminal 210 to the data terminal D is shifted by 6 bits using the clock signal input to the clock terminal C, and the address output terminal 21 is shifted.
Output from 3. The data register 201 holds the data signal input to the data terminal D from the data input terminal 211 selected by the selector circuit 202 or the data latched by the data latch circuit 206, and outputs the value.

The selector circuit 202 selects data to be input according to the output of the data select register 205. The latch pulse width detection circuit 203 detects the pulse width of the address signal input from the address input terminal 210 to the data terminal D, similarly to the latch pulse width detection circuit 223 shown in FIG.

The reset signal detection circuit 204 detects a reset signal from an address signal input from the address input terminal 210, similarly to the reset signal detection circuit 223 shown in FIG. The data select register 205 is a register in which data transmission timing is set. For example, if the input logic circuit 62A transmits data to the second slot, the bit corresponding to the second slot is set to “1”. To

The data latch circuit 206 latches the data signal of the switch 65 input to the data input terminal 215 according to the output signal of the logic circuit 208. The data latch flag output circuit 207 is set by the output of the latch pulse width detection circuit 202,
It is reset by the output of 4. The logic circuit 208 outputs an output at a high level when the output of the latch pulse width detection circuit 202 is at a low level and the output of the data latch flag circuit 207 is at a high level.

Next, the operation of the input logic circuit 62A according to the present embodiment will be described with reference to FIGS. When the address signal of slot 0 in FIG. 5D is input to the address input terminal 210 shown in FIG. 7, the reset signal is input to the reset signal detection circuit 204 because it is a Low level signal for six clocks. Is detected, the output Q is set to High level. This output Q resets the data latch flag circuit 207.

Next, when the two-slot address signal of FIG. 5D is input to the address input terminal 210 shown in FIG. 7, the latch pulse width detection circuit 202 determines that the High level is for four clocks. , The output Q is set to a high level. The output Q causes the data latch flag circuit 2
07 is set, and the output of the logic circuit 208 becomes High level.

When the output of the logic circuit 208 goes high, the data latch circuit 206 switches to the data input terminal 2
The data input from 11 is latched. That is, FIG.
The data (lamp 0 data) of one slot in (C) is latched. When the lamp 0 data is at the low level, if the lamp 64 shown in FIG. 3 is to be turned off, the output Q of the data latch circuit 206 is output from the output terminal OUT206 and the input circuit 62B shown in FIG. Is turned off, and the power supply to the lamp 64 is cut off.

When the output of the logic circuit 208 goes high, the data select register 205 sets the transmission timing. Data select register 20
5, the set data is sequentially shifted by a clock signal, and at a predetermined timing, the selector circuit 202
From the data input terminal 211 side to the data latch circuit 20
6, the data indicating the open / closed state of the switch 65 latched by the data latch circuit 206 is held in the data register 201, and the data output terminal 214
Output from

When the output of the logic circuit 208 goes high, the address shift register 200 resets bits 2 to 5. Therefore, the address signal 73 output from the address output terminal 213 is
As shown in the two slots (F), the signal is converted into a signal of 1/3 duty.

Next, an example in which the wiring system of the vehicle input / output device according to the present embodiment is applied to the DDM 4 will be described with reference to FIG. FIG. 8 is a block diagram showing an example of a configuration in which a wiring system for a vehicle input / output device according to an embodiment of the present invention is applied to a DDM.

The DDM 4 includes a microcontroller 66, and is connected to other control modules via the signal line 31 by multiplex communication. Output devices connected to the DDM 4 include a front right power window motor 23, a front right door lock motor 35, a right mirror left / right drive motor 37, a right mirror up / down drive motor 39, and a right mirror storage motor 41. , A mirror heater 43, and a power window switch illumination 30. The output modules 100,..., 111 are arranged between these output devices and the microcontroller 66, and are connected in a daisy chain by an output serial bus Bo.
The configuration of the output modules 100,..., 111 is as described in FIG. The output serial bus Bo is
This is a control signal line to which the address signal, the data signal, and the clock signal described in FIG. 3 are supplied. Power is supplied to each of the output modules 100,..., 111 from the power line PL, and is supplied to the output devices 33, 35, 37, 39, 41 via the output modules 100,.

The input devices connected to the DDM 4 include a front right lock detection switch 46, a power window domain switch 47, a door lock switch 48, a door unlock switch 49, and a front right power window lock detection switch 50. is there. An input module 1 is provided between each of these input devices and the microcontroller 66.
, 133 are arranged and connected in a daisy chain by an input serial bus Bi. Input module 12
The configuration of 0,..., 133 is as described in FIG. The input serial bus Bi is a control signal line to which the address signal, the data signal, and the clock signal described with reference to FIG. 5 are supplied. Power is supplied from the power line PL to each of the input modules 120,..., 133, and the states of the input devices 46,.

The microcontroller 66 outputs one 6-clock 0 level signal and 1
An address signal of 13 slots composed of two 2/3 duty pulse signals is output. The data signal of each slot is as follows: 1 slot is an up signal of the P / W motor 23; 2 slot is a down signal of the P / W motor 23;
The slot outputs a blinking signal of the P / WSW illumination 30.

The input serial bus address signal is composed of one 6-clock 0 level signal and 14 2/0 signals.
An address signal of 15 slots composed of 3 duty pulse signals is output. The data signal returned to the microcontroller 66 includes a lock detection SW 46,
The slot is the P / W main switch 47, and the last is the signal of the P / W lock detection signal 50. Here, the data signal transmitted on the input side is an inverted signal of the previously input data. When there is no data change by this operation, the data update can be checked. In the illustrated example, the bus is divided into two systems for input and output. However, when the data update speed may be long, the buses can be combined into one.

Here, in order to connect the DDM 4 and the output device, the DDM 4 is provided with output terminals Co1 and Co2, and the number of connection points for the output device is two. In order to connect the DDM 4 to the input device, the DDM 4 is provided with input terminals Ci1 and Ci2, and the number of connection points for the input device is two.
Even when the number of output devices is increased and the number of input devices is increased, the number of connection points is two each, and connection points for connecting a control module such as a DDM to an input / output device are provided. Since only four points are required, the number of connection points of the connector of the control module can be reduced. Therefore, the size of the control module can be reduced. In addition, the power line for supplying power to the input / output device can be configured by directly arranging the power line from the original power line to the output module, so that the weight of the power line can be reduced.

Here, the wiring configuration between the DDM 4 and the input / output device according to the conventional method will be described for reference with reference to FIG. The same reference numerals as those in FIG. 8 indicate the same parts. FIG. 9 is a block diagram showing an example of a configuration in which a conventional wiring system is applied to a DDM.

The DDM 4 has a microcontroller 66
, A power supply circuit 45, an input circuit, and an output circuit. The microcontroller 66 is connected to the signal line 31
It is connected to the. The microcontroller 66 converts the data input from the input means into a BC
Transmit to M3. Also, the microcontroller 66
It takes in data transmitted through the signal line 31 and outputs it to the output circuit 32 and the like.

The power supply circuit 45 is connected to the power line PL, converts the power supplied from the battery to a predetermined voltage, supplies a drive voltage for the microcontroller 66, and takes in an input signal in the input circuit. A voltage is supplied, and a driving voltage for an electric load connected to the output circuit 32 and the like is supplied.

Input terminal # 3 of microcontroller 66
Is connected to a door lock detection SW 46. A door unlock SW 49 is connected to the input terminal # 5 of the microcontroller 66. The input terminal # 4 of the microcontroller 66 includes a door lock SW46.
Is connected. In addition, a power window domain switch 47 and a power window lock detection switch 50 are connected to the input terminal of the microcontroller 66.

That is, the number of input terminals of the microcontroller 66 is 14, as shown. On the other hand, in the example of this embodiment, as described in FIG. 8, the number of contacts connected to the input device can be reduced to two.

On the other hand, the output circuit 36 outputs an HBD (H_Bridge_Drive) based on output signals output from output terminals # 29 and # 30 of the microcontroller 66.
r: H_bridge circuit) to control the door lock motor to an electric load. The output terminal # 30 of the microcontroller 66 is an HBD that drives a door unlock.
(H_bridge circuit) 32 is connected to the input terminal 2. The output terminal # 29 of the microcontroller 66 has
It is connected to an input terminal 1 of an HBD (H_bridge circuit) 32 that drives a door unlock. Similarly, the output circuits 32, 34, 48, 40, 42 and the power window switch illumination 44 are connected to the output terminal of the microcontroller 66.

That is, the number of output terminals of the microcontroller 66 is 12, as shown in the figure. On the other hand, in the example of this embodiment, as described in FIG. 8, the number of contacts connected to the output device can be reduced to two.

As described above, according to the present embodiment, the number of connection points for connecting input / output devices is reduced,
The number of connection points of the connectors of the control module can be reduced, and the size of the control module can be reduced.
In addition, the power line for supplying power to the input / output device can be configured by directly arranging the power line from the original power line to the output module, so that the weight of the power line can be reduced.

[0069]

According to the present invention, the vehicle control module can be reduced in size and weight. Moreover, the weight of the power supply line in the vehicle power supply device can be reduced.

[Brief description of the drawings]

FIG. 1 is a system block diagram showing the overall configuration of a vehicle input / output device wiring system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a basic configuration of a wiring system for a vehicle input / output device according to an embodiment of the present invention.

FIG. 3 is a block diagram illustrating a configuration of an output module used in a wiring system for a vehicle input / output device according to an embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of an output logic circuit used in an output module of a wiring system for a vehicle input / output device according to an embodiment of the present invention.

FIG. 5 is a time chart showing an operation of an output logic circuit used in an output module of a wiring system for a vehicle input / output device according to an embodiment of the present invention.

FIG. 6 is a block diagram showing a configuration of an input module used in a wiring system for an input / output device of a vehicle according to an embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of an input logic circuit used in an input module of a wiring system for a vehicle input / output device according to an embodiment of the present invention.

FIG. 8 is a block diagram showing an example of a configuration in which a wiring system for a vehicle input / output device according to an embodiment of the present invention is applied to a DDM.

FIG. 9 is a block diagram showing an example of a configuration in which a conventional wiring system is applied to a DDM.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Battery 3 ... Body control module (BCM) 4 ... Driver door module (DDM) 6 ... Rear integrated module (RIM) 7 ... Front integrated module (FIM) 13, 14, 15, 16 , 61,63,100,10
1,102,103,104,105,106,10
7, 108, 109, 110, 111 output module 17, 20 turn signal lamp 18, 19 tail lamp 31 signal line 60, 66 microcontroller 62, 120, 121, 122, 123, 124, 12
5,126,127,128,129,130,13
1, 132, 133 ... input module 61A ... output logic circuit 61B ... output circuit 62A ... input logic circuit 62B ... input circuit 64, 66 ... lamp 65 ... switch PL ... power line

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tatsuya Yoshida 2520 Ojitakaba, Hitachinaka City, Ibaraki Prefecture Inside the Automotive Equipment Division of Hitachi, Ltd. (72) Inventor Mitsuru Konoi 2477 Takaba, Hitachinaka-shi, Ibaraki Prefecture Co., Ltd.Hitachi Car Engineering Co., Ltd. Hitachi Automotive Equipment Division (72) Inventor Yuichi Kuramochi 2520 Oji Takaba, Hitachinaka City, Ibaraki Prefecture F-term in Hitachi Automotive Equipment Division 5K048 AA01 AA03 BA42 DC04 EB01 EB02 EB05 HA36

Claims (5)

[Claims] 1. A control module comprising: a control module; and an input / output module to which a plurality of input / output devices are respectively connected. The control module includes a plurality of input / output modules connected in a daisy chain by control signal lines. Characteristic vehicle input / output device wiring system. 2. The wiring system for a vehicle input / output device according to claim 1, wherein said control signal line is a signal line for transmitting control data, device address data, and a clock signal. Output device wiring system. 3. The wiring system for a vehicle input / output device according to claim 2, wherein the control data output from the control module is output in the order of the input / output devices connected in series. Vehicle input / output device wiring system. 4. The wiring system for a vehicle input / output device according to claim 2, wherein said input / output module outputs a pulse signal indicating device address data output from said control module.
A wiring system for an input / output device of a vehicle, wherein a duty ratio of a pulse signal is changed when an input device transmits or an output device receives. 5. The wiring system for a vehicle input / output device according to claim 1, wherein the control module performs transmission / reception by comparing a signal output from the control module with a returned input signal. A wiring system for an input / output device of a vehicle, characterized in that it is confirmed that: