Vehicle-mounted electronic control device

A vehicle-mounted electronic control and main control circuit technology, applied in the direction of program control, computer control, general control system, etc., can solve the problems of slow downlink communication speed, difficult processing speed, inability to drive and control, etc., and achieve miniaturization and high speed Effects of processing performance and reduction in the number of input terminals

Active Publication Date: 2017-04-19
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] According to Patent Document 1, since the downlink communication speed is slow and the downlink communication period is long, there are the following problems: the first electrical load group 12a cannot be driven and controlled by using the downlink communication information DND, and the number of output terminals of the main control circuit part 20A There are many, so it is large and expensive, and it is difficult to improve the processing speed with the increase in size

Method used

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Embodiment approach 1

[0041] The overall structural block diagram of the vehicle-mounted electronic control device according to Embodiment 1 of the present invention is figure 1 structure in detail.

[0042] figure 1 Among them, the vehicle-mounted electronic control device 100A includes a main control circuit unit 120A and a dual-purpose control circuit unit 130A. The vehicle-mounted electronic control device 100A is connected to the vehicle-mounted battery, that is, an external power source 101 via a power switch not shown in the figure, and is connected to the external power source 101 via an internal constant-voltage power source 111. To obtain the control voltage Vcc and operate. The plurality of direct switch sensors 102 are, for example, engine crank angle sensors or vehicle speed sensors, and are input in parallel to digital input ports of the main control circuit unit 120A as direct input signals DIH via the first digital input interface circuit 112 . The high-speed analog sensor 103 is,...

Embodiment approach 2

[0141] with figure 1 Focusing on the differences, the overall structural block diagram of the vehicle-mounted electronic control device in Embodiment 2 of the present invention is Figure 7 structure is described. In addition, in each figure, the same reference numerals represent the same or corresponding parts, figure 1 and Figure 7 The main difference is that the main control circuit part 120B is used instead of the main control circuit part 120A, and the dual-purpose control circuit part 130B is used instead of the dual-purpose control circuit part 130A, and the dual-purpose control circuit part 130B is changed from the logic control circuit SCNT to the auxiliary microprocessor SCPPU . In addition, an abnormal information register 134e is added to the dual-purpose control circuit unit 130B, and if abnormal information is stored therein, a read request signal REQ is generated to the main control circuit unit 120B through a dedicated line.

[0142] Figure 7 Among them,...

Embodiment approach 3

[0186] with figure 1 Focusing on the differences, the overall structural block diagram of the vehicle-mounted electronic control device in Embodiment 3 of the present invention is Figure 9 structure in detail.

[0187] In addition, in each figure, the same reference numerals represent the same or corresponding parts, figure 1 and Figure 9 The main difference is that the main control circuit unit 120C is used instead of the main control circuit unit 120A, and the dual-purpose control circuit unit 130C is used instead of the dual-purpose control circuit unit 130A. The main control circuit unit 120C only has a high-speed AD converter 124 and does not have Built-in multiplexer 125b (refer to figure 2 ) to select the multi-channel AD converter 125 of the input channel. Therefore, the medium-speed analog input signal ANM and the low-speed analog input signal ANL are input to a specific channel of the high-speed AD converter 124 via the extended indirect multiplexer 145C capab...

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Abstract

Down-link communication data DND from a main control circuit unit 120A to a combination control circuit unit 130A are divided into first and second down-link data, and high-speed communication is performed using a down-link clock signal CLD and a transmission start command signal STD. A high-speed load 108b that has been directly driven from the main control circuit unit 120A is indirectly high-speed driven from the combination control circuit unit 130A using the first down-link data. A low-speed analog input signal ANL that has been indirectly input to the combination control circuit unit 130A is input to a specific input channel of a multi-channel AD converter 125 in the main control circuit unit 120A via an indirect multiplexer 115b. By performing channel selection using the down-link communication data DND, the loading of analog signal is performed without depending on the low-speed up-link communication, and the number of points of a medium-speed analog input signal ANM that has conventionally been directly input to the main control circuit unit 120A is decreased, whereby the number of the input and output terminals of the main control circuit unit is decreased and a decrease in size is achieved.

Description

technical field [0001] The present invention relates to the improvement of, for example, an on-vehicle engine control device, that is, an on-vehicle electronic control device, in which a first integrated circuit element as a main control circuit part and a second integrated circuit element as a dual-purpose control circuit part perform serial communication with each other to cooperate. In particular, it relates to an in-vehicle electronic control device capable of reducing the number of input and output terminals of a main control circuit unit to be compact and capable of high-speed processing. Background technique [0002] The electronic control device in which the main control circuit part and the dual-purpose control circuit part are connected in series to cooperate with each other has been widely used. One of the functions of the dual-purpose control circuit part is to limit the number of input and output terminals of the main control circuit part. For the number of unit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02G05B19/042G06F13/38
CPCF02D41/20F02D41/22F02D41/266F02D2041/281F02D2041/286F02D35/027F02D41/26F02D9/105F02D35/028F02M51/061F02P1/083
Inventor 岩上祐希多田准士山本智树
Owner MITSUBISHI ELECTRIC CORP
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