JPH01256242A - Control method for centralized wiring system - Google Patents

Abstract

PURPOSE:To improve the response of an input/output device by dividing plural terminal stations into input terminal stations for exclusive use of a measuring signal and output terminal stations for exclusive use of an operating signal respectively, using a master station and connecting and controlling corresponding input and output terminal stations. CONSTITUTION:An input terminal station (LCU) 111 fetches the state of input devices 130-132, incorporates the data into a transmission code 311 and returns the result to a master station (CCU) 101. When the CCU 101 receives a reception code 351, the CCU 101 finds out output exclusive LCUs 113, 114 connecting a corresponding output device from a data of an input device and an address data (representing LCU) in a received code, and sends a transmission code 312 including the output equipment control data to them. The output exclusive LCUs 113, 114 always monitors a signal transmission line 100 and fetches a transmission code 312 addressed to itself as reception codes 352, 353 respectively when the transmission code 312 addressed to itself appears. Thus, the output response with respect to the input is improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control method for an automobile centralized wiring system, and in particular to a control system for high-speed data processing when multiplexed data is transmitted between a master station and a plurality of terminal stations. This invention relates to a control method for a centralized wiring system suitable for

[Conventional technology]

The control method for the conventional centralized wiring system is based on Japanese Patent Application Laid-open No. 61-1.
As described in Publication No. 94942, a central control unit (Ce
ntral Control Unit; hereinafter referred to as CCU
) and multiple terminal processing devices (Local Con
trol units (hereinafter abbreviated as LCUs) are commonly connected by signal transmission lines, and each LCU is connected to input devices such as various switches and sensors, and output devices such as lamps and motors, and a CCU connects multiple LCUs. It monitors one unit at a time to capture input information, and at the same time passes output information to the LCU. The CCU processes the input information taken in,
The calculation results are classified by output device corresponding to the input device, held as output information of each LCU, and provided to the LCU as output information when sequentially monitoring the LCU. As described above, the conventional control method for the centralized wiring system is such that the CCU sequentially monitors and controls all the LCUs, as shown in FIG.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, the CCUs are arranged in a predetermined order.
Data is exchanged between input devices and output devices by monitoring the data, and as the number of devices to be controlled in a vehicle increases, and the total number of LCUs increases accordingly, the overall operating time for each device increases. There was a problem with the delay.

It is generally thought that this problem can be solved by increasing the transmission speed to a speed commensurate with the number of input/output devices.
When high-speed data transmission is performed in a car, a new problem arises in that noise is generated in radios, etc., and the above-mentioned problem cannot be solved by increasing the transmission speed.

An object of the present invention is to propose a control method for an integrated wiring system that guarantees responsiveness between related input and output devices even if the number of devices in a vehicle increases.

[Means to solve the problem]

The above purpose is to provide multiple terminal stations that input measurement signals from input devices and output operation signals to output devices.

In the control method for an integrated wiring system, the control method includes a master station that is connected to the plurality of terminal stations via a transmission path, performs arithmetic processing based on measurement signals from the terminal stations, and transmits control signals to the corresponding terminal stations. The plurality of terminal stations are each divided into an input terminal station dedicated to inputting the measurement signal and an output terminal station dedicated to outputting the operation signal, and the corresponding input terminal stations and output terminal stations are respectively connected by the master station. or by a control method of an integrated wiring system that controls at least one of the listed terminal stations, inputting the measurement signal from the input device and transmitting the operation signal to the output device having a predetermined relationship with the input device. This is achieved by controlling an integrated wiring system using a shared input/output terminal station that performs output and output.

[Effect]

A terminal that processes and supports multiple terminal stations that input measurement signals from input devices and output operation signals to output devices based on measurement signals transmitted from these multiple terminal stations via transmission paths. In a control method for an integrated wiring system controlled under a master station that transmits control signals to stations, the plurality of terminal stations are configured as an input terminal station exclusively for inputting measurement signals and an output terminal station exclusively for outputting operation signals. The corresponding input terminal station and output terminal station are connected and controlled by the master station.

Furthermore, when at least one of the terminal stations inputs a measurement signal from an input device and forms one unit with that input device, or when it is placed nearby, an operation signal is sent to an output device in a predetermined relationship. As an input/output terminal station for shared input and output, the master station connects and controls other corresponding terminal stations.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An explanation of the present invention and an embodiment thereof will be explained below with reference to FIGS. 1 and 2.

The integrated wiring system consists of an input-only LCU (input terminal station) that inputs signals from combination switch units, inhibitor switches, sensors, etc., and an output-only LCU that outputs operation signals to electronic meters, washer motors, lamps, etc.
CU, (output terminal station) and input/output-only LCU (input/output terminal station) when input/output signals such as a rear combination lamp switch with a disconnection detection function or a wiper unit with a stop position detection sensor are in the same device. An input-only LCU and an output-only LCU are divided into functions and connected to related input devices and output devices, and are controlled as a pair. As a result, information from the input device is immediately transferred to the output device, so responsiveness between input and output can be ensured.

FIG. 1 is a system block diagram representing one embodiment of the present invention. CCU (master station) 101 and input-only LCUII
I, 112 and output-only LCU 113゜114.115,
116, input/output shared LCU 117, 118, signal transmission line (transmission line) 100, and input-only LCUI 1.1, 11
Input devices 130, 131, 132, 13 connected to 2
3,134 and output-only LCU113,114,1.15
, 11.6, output devices 121, 122, 1 connected to
23゜124.1.25,126 and input/output shared LCU1
Input equipment 141, 142°1 connected to 17°118
45.146 and output equipment 143, 144, 147°14
Consists of 8. FIG. 2 is a flowchart showing the flow of messages during control in this embodiment, and is composed of transmission codes 310-320 and reception codes 350-362.

Next, details of the operation of the embodiment will be explained based on FIGS. 1 and 2.

In Figure 1, input-only LCUI 11 and output-only L
The CUs 113 and 114 are a pair of input/output devices. In other words, the input device 1 connected to the input-only LCUIII
The input information (measurement signals) generated from 30, 131, 132 is sent to the output device 121 of the output-only LCU 113, 114.
, 122, 123° 124, and similarly input-only LCU 112 and output-only LCU 112.
115° and 116 are input/output devices as a pair. On the other hand, it is assumed that the input/output devices of the input/output shared LCUs 117 and 118 are related to each other. Next, an example of system operation is shown.

The CCU 101 transmits a transmission code 310 to the input-only LCU III as an input information request.

LCUll always monitors the signal transmission line 100,
When it is determined that the transmission code 310 cursed on the signal transmission path 100 is addressed to itself, it is taken in as the reception code 350.

The LCUIII takes in the status of the input devices 130 to 132, inputs the data into the transmission code 311, and sends the data to the CCUIOI.
Reply to.

When the CCU 101 receives the received code 351, it connects the output device to the corresponding output device based on the address data (representing the LCU) in the received code and the data of the input device.
13 and 114, and transmits a transmission code 312 containing output device control data to them.

The output-only LCUs 113 and 114 also have a constant signal transmission line 100.
, and if a transmitted code 312 addressed to itself appears, it is taken in as received codes 352 and 353, respectively.

The output-only LCUs 113 and 114 have a reception code of 352°35
3, and turns on/off the output devices 121 to 124 connected to each one.

Similarly, the CCU 101 requests input information from the input-only LCU 112, transmits the input device data received from the input-only LCU 112 to the output-only LCUs 115 and 116 to which the corresponding output device is connected, and outputs the input information from the input-only LCU 112. The LCUs 115 and 116 turn on and off the output devices according to the control data.

The CCUIOI also controls the input/output shared LCUs 117 and 118 using the same procedure, and the LCU 11
The input information of 7 turns on and off the output devices 143 and 144 connected to the LCU 118, and also turns the LCU 118 on and off.
According to the input information of 118.

The output devices 147 and 148 of the LCU 117 are turned on and off.

According to this embodiment, the input-only LCU is converted into the output-only LCU.
By controlling each pair as a pair, the responsiveness of the output to the input can be improved.

Since the CCU monitors the LCU, input and output are performed in pairs, which improves response time, improves overall monitoring synchronization, and improves overall responsiveness.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

A plurality of terminal stations are divided into input terminal stations dedicated to inputting measurement signals and output terminal stations dedicated to outputting operation signals, and each corresponding input terminal station and output terminal station are connected and controlled by a master station. As a result, a corresponding operation signal can be immediately output based on the input of a measurement signal, and responsiveness between input and output devices can be improved.

Furthermore, the input device and the output device of at least one of the terminal stations are a single unit.

Alternatively, the total number of terminal stations can be reduced by using an input/output terminal station for shared input and output for input and output devices that have a predetermined relationship, such as when they are placed close to each other. Control cycle is improved.

[Brief explanation of the drawing]

FIG. 1 is a system block diagram showing one embodiment of the present invention, FIG. 2 is a control flow chart, and FIG. 3 is a control flow chart of a conventional example. 100...Signal transmission line, 101...CCU, 111
~112...Input-only LCU, 113-116...
Output-only LCU, 117.118...Input/output shared LC
U, 121-126... Output equipment, 130-134.
...Input device.

Claims (1)

[Scope of Claims] 1. A plurality of terminal stations that input measurement signals from an input device and output operation signals to an output device, and a plurality of terminal stations that are connected to the plurality of terminal stations via a transmission path and that perform measurements from the terminal stations. In a control method for an integrated wiring system, the plurality of terminal stations are connected to an input terminal station exclusively for inputting the measurement signal and the operation signal. divided into output terminal stations dedicated to output of
A control method for an integrated wiring system, characterized in that the corresponding input terminal station and the output terminal station are respectively connected and controlled by the master station. 2. At least one of the terminal stations is an input/output terminal that inputs the measurement signal from the input device and outputs the operation signal to the output device that has a predetermined relationship with the input device. 2. A control system for an integrated wiring system according to claim 1, wherein the central wiring system is a station.