JPH03109184U - - Google Patents
Info
- Publication number
- JPH03109184U JPH03109184U JP1761190U JP1761190U JPH03109184U JP H03109184 U JPH03109184 U JP H03109184U JP 1761190 U JP1761190 U JP 1761190U JP 1761190 U JP1761190 U JP 1761190U JP H03109184 U JPH03109184 U JP H03109184U
- Authority
- JP
- Japan
- Prior art keywords
- load
- voltage
- switching element
- power supply
- determining
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Description
第１図は本考案の第１の実施例を示す回路図、
第２図は本考案の第２の実施例を示す回路図、第
３図は従来の故障検出回路を示す回路図である。
図中、１２……マイコン、１１……Ａ／Ｄ変換
器、ＴＲ１……トランジスタ、Ｂ，Ｖｃｃ……電
源、Ｒ１〜Ｒ４……抵抗、Ｄ１，Ｄ２……ダイオ
ード、Ｌ１……ソレノイド。
FIG. 1 is a circuit diagram showing a first embodiment of the present invention;
FIG. 2 is a circuit diagram showing a second embodiment of the present invention, and FIG. 3 is a circuit diagram showing a conventional failure detection circuit. In the figure, 12... microcomputer, 11... A/D converter, TR1... transistor, B, Vcc... power supply, R1 to R4... resistor, D1, D2... diode, L1... solenoid.
Claims (1)
素子のオン／オフにより負荷への電力を制御する
回路の故障検出装置において、 該負荷が断線状態のときに、前記スイツチング
素子と負荷との接続点に第１電源の電圧と異なる
値の電圧を供給する第２電源と、 スイツチング素子をオフ制御したときに、前記
接続点の電圧が第１電源の電圧であればスイツチ
ング素子のシヨート故障であると判断すると共に
、前記接続点の電圧が第２電源の電圧であればソ
レノイドの断線であると判断する判断手段とを備
えたことを特徴とする故障検出回路。[Claims for Utility Model Registration] In a failure detection device for a circuit that controls power to a load by turning on/off a switching element interposed between a first power source and a load, when the load is in a disconnection state, a second power supply that supplies a voltage different from the voltage of the first power supply to a connection point between the switching element and the load; A failure detection circuit comprising determining means for determining that there is a short failure in a switching element, and determining that a solenoid is disconnected if the voltage at the connection point is the voltage of a second power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1761190U JPH03109184U (en) | 1990-02-23 | 1990-02-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1761190U JPH03109184U (en) | 1990-02-23 | 1990-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03109184U true JPH03109184U (en) | 1991-11-08 |
Family
ID=31520797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1761190U Pending JPH03109184U (en) | 1990-02-23 | 1990-02-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03109184U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10332759A (en) * | 1997-05-22 | 1998-12-18 | Robert Bosch Gmbh | Electric circuit device and inspection method thereof |
| JP2008034141A (en) * | 2006-07-26 | 2008-02-14 | Denso Corp | Heater device, and vehicular liquid crystal display device equipped with heater device |
| JP2011083161A (en) * | 2009-10-09 | 2011-04-21 | Ebara Corp | Waste heat power generator system |
-
1990
- 1990-02-23 JP JP1761190U patent/JPH03109184U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10332759A (en) * | 1997-05-22 | 1998-12-18 | Robert Bosch Gmbh | Electric circuit device and inspection method thereof |
| JP2008034141A (en) * | 2006-07-26 | 2008-02-14 | Denso Corp | Heater device, and vehicular liquid crystal display device equipped with heater device |
| JP2011083161A (en) * | 2009-10-09 | 2011-04-21 | Ebara Corp | Waste heat power generator system |