JPH0374325U - - Google Patents
Info
- Publication number
- JPH0374325U JPH0374325U JP13593589U JP13593589U JPH0374325U JP H0374325 U JPH0374325 U JP H0374325U JP 13593589 U JP13593589 U JP 13593589U JP 13593589 U JP13593589 U JP 13593589U JP H0374325 U JPH0374325 U JP H0374325U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- self
- cpu
- diagnosis
- signal
- 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.)
- Granted
Links
- 238000004092 self-diagnosis Methods 0.000 claims description 5
- 238000003745 diagnosis Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
Description
第１図はこの考案に係る車両用メータの自己診
断回路の一実施例を示す回路結線図、第２図は第
１図の動作を説明するフローチヤート、第３図は
第１図の動作を説明するフローチヤート、４図は
従来の車両用メータの自己診断回路である。
５……アンド回路、７……ＣＰＵ、８……不揮
発性メモリ、９，１１，１３……ドライバ、１０
……速度計、１２……エンジン回転計、１４……
燃料計。
Fig. 1 is a circuit connection diagram showing an embodiment of the vehicle meter self-diagnosis circuit according to this invention, Fig. 2 is a flow chart explaining the operation of Fig. 1, and Fig. 3 is a circuit diagram showing the operation of Fig. 1. The flowchart to be explained in FIG. 4 is a conventional self-diagnosis circuit for a vehicle meter. 5...AND circuit, 7...CPU, 8...Nonvolatile memory, 9, 11, 13...Driver, 10
...Speedometer, 12...Engine tachometer, 14...
fuel gauge.
Claims (1)
る選択信号とクロツク信号との論理積をとるアン
ド回路５と、このアンド回路よりのハイレベル出
力を起動信号として自己診断モードのプログラム
を実行するＣＰＵ７と、このＣＰＵの自己診断モ
ードのプログラムを実行するための交差コイルム
ーブメントの指示調整情報が書込まれた不揮発性
メモリ８と、上記ＣＰＵよりの指示に基づいて計
器１０，１２，１４を駆動する信号を出力して診
断を受けるドライバ９，１１，１３とを備えた車
両用メータの自己診断回路。 An AND circuit 5 which takes the logical product of the selection signal supplied from the sensor via the address decoder and the clock signal, a CPU 7 which executes a self-diagnosis mode program using the high level output from the AND circuit as a starting signal, and A non-volatile memory 8 in which cross coil movement instruction adjustment information is written to execute the CPU's self-diagnosis mode program, and a signal that drives the instruments 10, 12, 14 based on instructions from the CPU is output. A self-diagnosis circuit for a vehicle meter, comprising drivers 9, 11, and 13 that undergo diagnosis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989135935U JPH0648348Y2 (en) | 1989-11-22 | 1989-11-22 | Vehicle meter self-diagnosis circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989135935U JPH0648348Y2 (en) | 1989-11-22 | 1989-11-22 | Vehicle meter self-diagnosis circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374325U true JPH0374325U (en) | 1991-07-25 |
| JPH0648348Y2 JPH0648348Y2 (en) | 1994-12-12 |
Family
ID=31683170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989135935U Expired - Lifetime JPH0648348Y2 (en) | 1989-11-22 | 1989-11-22 | Vehicle meter self-diagnosis circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648348Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5486150U (en) * | 1977-11-30 | 1979-06-18 | ||
| JPS5614913A (en) * | 1979-07-19 | 1981-02-13 | Mitsubishi Electric Corp | Diagnosing method |
| JPS5940206A (en) * | 1982-08-31 | 1984-03-05 | Nippon Seiki Co Ltd | Display device for vehicle |
-
1989
- 1989-11-22 JP JP1989135935U patent/JPH0648348Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5486150U (en) * | 1977-11-30 | 1979-06-18 | ||
| JPS5614913A (en) * | 1979-07-19 | 1981-02-13 | Mitsubishi Electric Corp | Diagnosing method |
| JPS5940206A (en) * | 1982-08-31 | 1984-03-05 | Nippon Seiki Co Ltd | Display device for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648348Y2 (en) | 1994-12-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |