JPH02104447U - - Google Patents
Info
- Publication number
- JPH02104447U JPH02104447U JP1195789U JP1195789U JPH02104447U JP H02104447 U JPH02104447 U JP H02104447U JP 1195789 U JP1195789 U JP 1195789U JP 1195789 U JP1195789 U JP 1195789U JP H02104447 U JPH02104447 U JP H02104447U
- Authority
- JP
- Japan
- Prior art keywords
- cpu
- direct communication
- station
- control
- electrical components
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Debugging And Monitoring (AREA)
Description
第１図は、自動車の電装品制御システムの回路
図、第２図は、同システムの作動を説明するため
のタイムチヤートである。
符号の説明、１……自動車の電装品制御システ
ム、３……ＣＰＵ、４……直接交信コード発生回
路、５……異常判定手段、６……セーフテイ手段
、７……自動車の電装品制御システムのフエイル
セーフ回路、１０……送信出力の「１」，「０」
監視カウンタ、１１……送信出力の「０」監視カ
ウンタ、ＴＸＣ……送信出力、ＴＸＤ……直接交
信指示信号、ＣＤＳＴＰ……異常検知信号、ＤＣ
Ｈ……ゲートコントロール信号、ＴＸＧＯ……直
接交信スタート信号。
FIG. 1 is a circuit diagram of an automobile electrical component control system, and FIG. 2 is a time chart for explaining the operation of the system. Explanation of symbols, 1...Automotive electrical component control system, 3...CPU, 4...Direct communication code generation circuit, 5...Abnormality determination means, 6...Safety means, 7...Automotive electrical component control system Fail-safe circuit, 10...Transmission output "1", "0"
Monitoring counter, 11... Transmission output "0" monitoring counter, TXC... Transmission output, TXD... Direct communication instruction signal, CDSTP... Abnormality detection signal, DC
H...Gate control signal, TXGO...Direct communication start signal.
Claims (1)
けられ、各グループに属する電装品はグループご
とに対応して設けられた各制御ステーシヨンに接
続され、且つ、それら各制御ステーテヨンは相互
に協働可能とするべく伝送路で接続されてなる自
動車の電装品制御システムにおいて、制御ステー
シヨンの１つをマスターステーシヨンとし、他を
リモートステーシヨンとし、且つ、リモートステ
ーシヨン間での直接交信を指示する直接交信指示
信号を所定時間間隔で伝送路に出力しうる直接交
信指示手段を具備し、この直接交信期間中、マス
ターステーシヨンのＣＰＵの送信ラインを監視し
、その間に、データが、設定回数１，０を繰り返
すか、設定期間０レベルを継続すればＣＰＵ異常
と判定する異常判定手段と、異常と判定された時
ＣＰＵからの送信を止めて、異常検出コードを他
の制御ステーシヨンに送出するセーフテイ手段と
を設けたことを特徴とする自動車の電装品制御シ
ステムのフエイルセーフ回路。 A large number of electrical components of an automobile are divided into two or more groups, and the electrical components belonging to each group are connected to each control station provided correspondingly to each group, and each control station can cooperate with each other. In a control system for automotive electrical components connected by a transmission line, one of the control stations is designated as a master station, the other as a remote station, and a direct communication instruction signal is provided that instructs direct communication between the remote stations. During this direct communication period, the transmission line of the CPU of the master station is monitored and the data repeats 1 and 0 a set number of times during this direct communication period. , an abnormality determination means that determines that the CPU is abnormal if the 0 level continues for a set period, and a safety means that stops transmission from the CPU and sends an abnormality detection code to other control stations when it is determined that the CPU is abnormal. A fail-safe circuit for an automobile electrical component control system, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195789U JPH02104447U (en) | 1989-02-02 | 1989-02-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1195789U JPH02104447U (en) | 1989-02-02 | 1989-02-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02104447U true JPH02104447U (en) | 1990-08-20 |
Family
ID=31220971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1195789U Pending JPH02104447U (en) | 1989-02-02 | 1989-02-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02104447U (en) |
-
1989
- 1989-02-02 JP JP1195789U patent/JPH02104447U/ja active Pending
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