CN104181455A - Fault detection alarm circuit - Google Patents
Fault detection alarm circuit Download PDFInfo
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- CN104181455A CN104181455A CN201310200382.8A CN201310200382A CN104181455A CN 104181455 A CN104181455 A CN 104181455A CN 201310200382 A CN201310200382 A CN 201310200382A CN 104181455 A CN104181455 A CN 104181455A
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Abstract
The embodiment of the invention discloses a fault detection alarm circuit comprising an AND gate chip U1, a photoelectric coupler U3, a triode Q1, a relay K1, a buzzer LS, and resistors R1, R2, R3, and R4. A first pin of the U1 is connected with a first fault testing point; a second pin of the U1 is connected with a second fault testing point; a third pin of the U1 is connected with a ninth pin of the U1, a fourth pin of the U1 is connected with a third fault testing point; a fifth pin of the U1 is connected with a fourth fault test point; a sixth pin of the U1 is connected with a tenth pin of the U1; and an eighth pin of the U1 is connected with a second pin of the U3. A third pin of the U3 is respectively connected with a base electrode of the Q1 and one end of the R2; a fourth pin of the U3 is connected with one end of the R3, and a collector of the Q1 is connected with a second pin of the K1. According to the invention, the circuit has the following advantages: a fault in the circuit can be effectively detected; the user can be prompted by beeps of the buzzer; and fault removing can be carried out timely.
Description
Technical field
The present invention relates to a kind of testing circuit, relate in particular to a kind of fault detect warning circuit.
Background technology
Documents automatic circuit fault diagnosis and alarm device (Chinese Patent Application No. 200910208004.8), a kind of automatic circuit fault diagnosis and alarm device is disclosed, there are the contactor circuit and the fault diagnosis warning circuit that join with circuit-under-test, fault diagnosis warning circuit is provided with multiple comparers, phase inverter and light emitting diode, can automatic detection circuit (transmission line) state and according to fault type (contactor cut-offs, line short, the line broken circuit etc.) warning of classifying.
Foregoing circuit device is many, and circuit is more complicated, and cost is higher.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, a kind of fault detect warning circuit is provided.The effectively fault in testing circuit, and carry out reminding user by buzzer call, fix a breakdown in time, increase the repeat usage of power supply.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of fault detect warning circuit, comprises and door chip U1, photoelectrical coupler U3, triode Q1, relay K 1, hummer LS, resistance R 1, R2, R3, R4; U1 the 1st pin is connected with Fisrt fault test point; U1 the 2nd pin is connected with the second fault test point; U1 the 3rd pin is connected with U1 the 9th pin; U1 the 4th pin is connected with the 3rd fault test point; U1 the 5th pin is connected with the 4th fault test point; U1 the 6th pin is connected with U1 the 10th pin; U1 the 8th pin is connected with U3 the 2nd pin; U3 the 1st pin is connected with R1 one end; U3 the 3rd pin is connected with Q1 base stage and R2 one end respectively; U3 the 4th pin R3 one end connects; Q1 collector is connected with K1 the 2nd pin; Q1 emitter respectively with the R2 other end, LS one end and power supply be connected; K1 the 1st pin is connected with the R3 other end and the first power supply respectively; K1 the 3rd pin is connected with the LS other end; K1 the 5th pin is connected with R4 one end; The R1 other end is connected with second source; The R4 other end is connected with the 3rd power supply.
Further, in the time that in four fault test points, any one goes wrong, because three signals of one of them signal of U1 input end and other are not identical, make U1 the 8th pin output low level, U3 conducting, Q1 conducting owing to there being base bias voltage, K1 starts working, switch adhesive, LS conducting also pipes.
Further, described U1 model is 74LS08.
Further, described U3 model is PC817.
Implement the fault in the effective testing circuit of the embodiment of the present invention, and carry out reminding user by buzzer call, fix a breakdown in time, increase the repeat usage of power supply.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 be a kind of fault detect warning circuit of the present invention schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1, a kind of fault detect warning circuit, comprises and door chip U1, photoelectrical coupler U3, triode Q1, relay K 1, hummer LS, resistance R 1, R2, R3, R4; U1 the 1st pin is connected with Fisrt fault test point; U1 the 2nd pin is connected with the second fault test point; U1 the 3rd pin is connected with U1 the 9th pin; U1 the 4th pin is connected with the 3rd fault test point; U1 the 5th pin is connected with the 4th fault test point; U1 the 6th pin is connected with U1 the 10th pin; U1 the 8th pin is connected with U3 the 2nd pin; U3 the 1st pin is connected with R1 one end; U3 the 3rd pin is connected with Q1 base stage and R2 one end respectively; U3 the 4th pin R3 one end connects; Q1 collector is connected with K1 the 2nd pin; Q1 emitter respectively with the R2 other end, LS one end and power supply be connected; K1 the 1st pin is connected with the R3 other end and the first power supply respectively; K1 the 3rd pin is connected with the LS other end; K1 the 5th pin is connected with R4 one end; The R1 other end is connected with second source; The R4 other end is connected with the 3rd power supply.
In the time that any one goes wrong in four fault test points, because three signals of one of them signal of U1 input end and other are not identical, make U1 the 8th pin output low level, U3 conducting, Q1 conducting owing to there being base bias voltage, K1 starts working, switch adhesive, LS conducting also pipes.
In the time not going wrong in four fault test points, because four signals of U1 input end are identical, make U1 the 8th pin output high level, U1 the 8th pin high level voltage is identical with second source voltage, U3 cut-off, and Q1 is owing to not had base bias voltage to end, K1 quits work, LS cut-off.
In concrete enforcement, can adopt+12V of the first power supply voltage, second source can be identical with the 3rd power supply, all employing+5V voltage.
Described U1 model is 74LS08.
Described U3 model is PC817.
Fault in the effective testing circuit of the embodiment of the present invention, and carry out reminding user by buzzer call, fix a breakdown in time, increase the repeat usage of power supply.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can carry out the hardware that instruction is relevant by computer program to complete, described program can be stored in a computer read/write memory medium, this program, in the time carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (4)
1. a fault detect warning circuit, is characterized in that, comprises and door chip U1, photoelectrical coupler U3, triode Q1, relay K 1, hummer LS, resistance R 1, R2, R3, R4; U1 the 1st pin is connected with Fisrt fault test point; U1 the 2nd pin is connected with the second fault test point; U1 the 3rd pin is connected with U1 the 9th pin; U1 the 4th pin is connected with the 3rd fault test point; U1 the 5th pin is connected with the 4th fault test point; U1 the 6th pin is connected with U1 the 10th pin; U1 the 8th pin is connected with U3 the 2nd pin; U3 the 1st pin is connected with R1 one end; U3 the 3rd pin is connected with Q1 base stage and R2 one end respectively; U3 the 4th pin R3 one end connects; Q1 collector is connected with K1 the 2nd pin; Q1 emitter respectively with the R2 other end, LS one end and power supply be connected; K1 the 1st pin is connected with the R3 other end and the first power supply respectively; K1 the 3rd pin is connected with the LS other end; K1 the 5th pin is connected with R4 one end; The R1 other end is connected with second source; The R4 other end is connected with the 3rd power supply.
2. fault detect warning circuit according to claim 1, it is characterized in that, in the time that in four fault test points, any one goes wrong, because three signals of one of them signal of U1 input end and other are not identical, make U1 the 8th pin output low level, U3 conducting, Q1 conducting owing to there being base bias voltage, K1 starts working, switch adhesive, and LS conducting also pipes.
3. fault detect warning circuit according to claim 2, is characterized in that, described U1 model is 74LS08.
4. fault detect warning circuit according to claim 3, is characterized in that, described U3 model is PC817.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200382.8A CN104181455A (en) | 2013-05-27 | 2013-05-27 | Fault detection alarm circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200382.8A CN104181455A (en) | 2013-05-27 | 2013-05-27 | Fault detection alarm circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104181455A true CN104181455A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310200382.8A Pending CN104181455A (en) | 2013-05-27 | 2013-05-27 | Fault detection alarm circuit |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375107A (en) * | 1989-09-30 | 1994-12-20 | Deutsche Thomson-Brandt Gmbh | Track error control signal generation apparatus as for a disc player |
| CN2346009Y (en) * | 1998-11-13 | 1999-10-27 | 曹建华 | Electronic anti-theft alarm |
| JP2003218640A (en) * | 2002-01-24 | 2003-07-31 | Matsushita Electric Ind Co Ltd | Two-frequency mixer circuit |
| CN1952863A (en) * | 2005-10-18 | 2007-04-25 | 鸿富锦精密工业（深圳）有限公司 | Touch type induction system |
| CN201181924Y (en) * | 2007-09-21 | 2009-01-14 | 江西吉安电机制造有限责任公司 | Middle and small generator excitation integrated controller |
| CN201293816Y (en) * | 2008-10-15 | 2009-08-19 | 熊猫电子集团有限公司 | Rapid cable detector |
| CN201359617Y (en) * | 2007-06-11 | 2009-12-09 | 郑五星 | Measurement malfunction monitoring wireless remote data-transmission alarming electric energy meter |
| CN201838990U (en) * | 2010-10-20 | 2011-05-18 | 浙江吉利汽车研究院有限公司 | Electric automobile leakage protection system |
| CN202906133U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Leakage protective socket |
-
2013
- 2013-05-27 CN CN201310200382.8A patent/CN104181455A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5375107A (en) * | 1989-09-30 | 1994-12-20 | Deutsche Thomson-Brandt Gmbh | Track error control signal generation apparatus as for a disc player |
| CN2346009Y (en) * | 1998-11-13 | 1999-10-27 | 曹建华 | Electronic anti-theft alarm |
| JP2003218640A (en) * | 2002-01-24 | 2003-07-31 | Matsushita Electric Ind Co Ltd | Two-frequency mixer circuit |
| CN1952863A (en) * | 2005-10-18 | 2007-04-25 | 鸿富锦精密工业（深圳）有限公司 | Touch type induction system |
| CN201359617Y (en) * | 2007-06-11 | 2009-12-09 | 郑五星 | Measurement malfunction monitoring wireless remote data-transmission alarming electric energy meter |
| CN201181924Y (en) * | 2007-09-21 | 2009-01-14 | 江西吉安电机制造有限责任公司 | Middle and small generator excitation integrated controller |
| CN201293816Y (en) * | 2008-10-15 | 2009-08-19 | 熊猫电子集团有限公司 | Rapid cable detector |
| CN201838990U (en) * | 2010-10-20 | 2011-05-18 | 浙江吉利汽车研究院有限公司 | Electric automobile leakage protection system |
| CN202906133U (en) * | 2012-11-19 | 2013-04-24 | 重庆盾之王实业有限公司 | Leakage protective socket |
Non-Patent Citations (1)
| Title |
|---|
| 未知: "DSP的大功率开关电源的设计方案", 《电子发烧友》 * |
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Application publication date: 20141203 |