CN101699305A - Automatic circuit fault diagnosis and alarm device - Google Patents
Automatic circuit fault diagnosis and alarm device Download PDFInfo
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- CN101699305A CN101699305A CN200910208004A CN200910208004A CN101699305A CN 101699305 A CN101699305 A CN 101699305A CN 200910208004 A CN200910208004 A CN 200910208004A CN 200910208004 A CN200910208004 A CN 200910208004A CN 101699305 A CN101699305 A CN 101699305A
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Abstract
The invention discloses an automatic circuit fault diagnosis and alarm device, which is provided with a contactor circuit connected with a tested circuit and a fault diagnosis and alarm circuit, wherein the fault diagnosis and alarm circuit is provided with a plurality of comparers, inverters and light-emitting diodes. The device can automatically detect the state of a circuit (transmission line), can give a classified alarm according to fault types (contactor cut-off, short circuit, open circuit and the like), needs no manual field tests, is time-saving and labor-saving, and can reduce the running cost and improve the working efficiency. The contactor circuit can be arranged in an electric cabinet, while the fault diagnosis and alarm circuit is arranged in the other electric cabinet; and the two electric cabinets are connected with each other through a middle transmission line so as to prevent the contactor circuit and the fault diagnosis and alarm circuit from being destructed artificially and improve the operational reliability of instruments and equipment. The used appliance components have low costs and high reliability, and more importantly, the device has a compact layout and small occupation space, and is suitable for the integration of a plurality of paths of detection circuits.
Description
Technical field:
The present invention relates to a kind of circuit checker, especially a kind of simple in structure, cost is low, it is little to take up room, time saving and energy saving, testing circuit (transmission line) state and (short circuit, open circuit etc.) classified and reported to the police according to fault type automatic circuit fault diagnosis and alarm device automatically.
Background technology:
At present, for the detection of electric equipment circuit (circuit), the feedback signal that normally relies on the auxiliary contact of contactor to send back to will directly influence the realization of measuring ability if auxiliary contact break down.In addition, the artificial situation of changing or damaging the signals collecting circuit (as the signal line short circuit, open circuit or problem such as wiring error) appears in regular meeting when actual production is in service, only depend on the method for simple auxiliary contact feedback just to be difficult to judge particular problem, can make false judgment under a lot of situations, during by artificial short circuit, system all can be judged as the combined floodgate useful signal as signal line short circuit or contactor auxiliary contact; And under the situation that signal line opens circuit or the contactor auxiliary contact open circuit, it is effective that system can completely be judged as separating brake again.Because existing testing circuit does not have the function of fault diagnosis and warning, therefore also need manually further to detect, just can fix a breakdown, waste time and energy, influence work efficiency.
Summary of the invention:
The present invention is in order to solve the above-mentioned technical matters of existing in prior technology, provide a kind of simple in structure, cost is low, it is little to take up room, time saving and energy saving, testing circuit state and (short circuit, open circuit etc.) classified and reported to the police according to fault type automatic circuit fault diagnosis and alarm device automatically.
Technical solution of the present invention is: a kind of automatic circuit fault diagnosis and alarm device, the contactor circuit and the fault diagnosis warning circuit that join with circuit-under-test are arranged, described contactor circuit is provided with resistance R 12, the R13 that is in series, and the auxiliary contact KM of contactor is parallel to the two ends of resistance R 13; Described fault diagnosis warning circuit is provided with the stabilized voltage supply IC1 that joins with power supply E, the output of stabilized voltage supply IC1 respectively with resistance R 1, capacitor W1, W2, W3 joins, the other end of resistance R 1 joins by the inverting input of resistance R 2 with comparer IC2, join and join by the in-phase input end of resistance R 3 by the inverting input of resistance R 4 with comparer IC4 with comparer IC3, the in-phase input end of the moving contact of potentiometer W1 and comparer IC2 joins, the inverting input of the moving contact of potentiometer W2 and comparer IC3 joins, and the in-phase input end of the moving contact of potentiometer W3 and comparer IC4 joins; The output terminal of comparer IC2, IC3, IC4 joins by the input end of resistance R 5, R6, R7 and inverter ic 5, IC6, IC7 respectively, the output terminal of inverter ic 5 joins with the LED that is in series 1, resistance R 8, the output terminal of inverter ic 6 joins with the LED that is in series 2, resistance R 9, the output terminal of inverter ic 7 joins with the LED that is in series 3, resistance R 10, the input end of inverter ic 5 joins by the output terminal of forward diode D1 and inverter ic 7, and the other end of resistance R 8, R9, R10 and power supply E join.
The present invention compares with prior art, has following advantage:
1. testing circuit (transmission line) state and according to fault type (contactor cut-offs, line short, the line broken circuit etc.) warning of classifying automatically need not artificial on-the-spot the detection, and is time saving and energy saving, can reduce operating cost, work efficiency is provided.
2. contactor circuit can place in the electric cabinet, the fault diagnosis warning circuit then places another electric cabinet, two electric cabinets are connected by the intermediate conveyor circuit with electric cabinet, can avoid contactor circuit and fault diagnosis to report to the police by artificial destruction, have improved the operational reliability of instrument and equipment.
3. used electric elements cost is low and reliability is high, the more important thing is compact in design, takes up room for a short time, is fit to the integrated of multichannel testing circuit.
Description of drawings:
Fig. 1 is the schematic block circuit diagram of the embodiment of the invention.
Fig. 2 is the concrete wiring diagram of the embodiment of the invention.
Embodiment:
Below in conjunction with description of drawings the specific embodiment of the present invention: the present invention is provided with contactor circuit and the fault diagnosis warning circuit that joins with circuit-under-test as shown in Figure 1.Specifically circuit as shown in Figure 2: contactor circuit is provided with resistance R 12, the R13 that is in series, and the auxiliary contact KM of contactor is parallel to the two ends of resistance R 13; The fault diagnosis warning circuit is provided with the stabilized voltage supply IC1 (7809) that joins with power supply E (24V), the output of stabilized voltage supply IC1 respectively with resistance R 1 (2K), capacitor W1 (setting valve 5.5V), W2 (setting valve 7V), W3 (setting valve 3V) joins, the other end of resistance R 1 joins by the inverting input of resistance R 2 (2K) with comparer IC2 (LM324), join and join by the in-phase input end of resistance R 3 (2K) by the inverting input of resistance R 4 (2K) with comparer IC4 (LM324) with comparer IC3 (LM324), the in-phase input end of the moving contact of potentiometer W1 and comparer IC2 joins, the inverting input of the moving contact of potentiometer W2 and comparer IC3 joins, and the in-phase input end of the moving contact of potentiometer W3 and comparer IC4 joins; Comparer IC2, IC3, the output terminal of IC4 is respectively by resistance R 5 (2K), R6 (2K), R7 (2K) and inverter ic 5 (2003), IC6 (2003), the input end of IC7 (2003) joins, the output terminal of inverter ic 5 and the LED that is in series 1, resistance R 8 (1.6K) is joined, the output terminal of inverter ic 6 and the LED that is in series 2, resistance R 9R8 (1.6K) joins, the output terminal of inverter ic 7 and the LED that is in series 3, resistance R 10R8 (1.6K) joins, the input end of inverter ic 5 joins by the output terminal of forward diode D1 and inverter ic 7, resistance R 8, R9, the other end of R10 and power supply E join.
Fig. 1, Figure 2 shows that the circuit that a route road is detected.
Principle of work:
Supply voltage E is by stabilized voltage supply IC1 regulated output voltage, and output voltage is given voltage comparator through the different voltages of input behind the electric resistance partial pressure.Because the intermediate conveyor circuit has connection, opens circuit, three kinds of states of short circuit, the contact KM of contactor opens and closed two states, comparer is output as high level or low level, output level acts on light emitting diode one end through phase inverter again, light emitting diode is promptly can conducting luminous or end, and has played diagnosis and warning function to circuit.
The contact KM closure of contactor under the normal operation, A point current potential is 4.5V, this current potential respectively with the setting valve 5.5V/7V/3V of voltage comparator ic 2, IC3, IC4 relatively, the result is comparer IC2 output high level, and the equal output low level of comparer IC3, IC4 is again by inverter ic 5, IC6, IC7 level conversion, then LED 1 conducting is luminous, LED 2, LED3 are not luminous, show the contactor operate as normal, the circuit non-fault; Otherwise if the contact KM of contactor disconnects, then LED 1 is not by luminous, and LED 2, LED3 are luminous.When middle transmission line opens circuit, A point current potential is 9V, at this moment, comparer IC3 exports high level, comparer IC2, IC4 output low level, through inverter ic 5, IC6, IC7, LED 2 conductings are luminous, LED 1, LED3 all end, and show the circuit destruction of being opened circuit this moment; When middle transmission line short circuit (short circuit of a, b point), A point current potential is 0V, at this moment, comparer IC4 exports high level, comparer IC2, IC3 output low level, through inverter ic 5, IC6, IC7, LED 3 conductings are luminous, LED 1, LED2 all end, and show that this moment, circuit suffered that short circuit destroys.
Claims (1)
1. automatic circuit fault diagnosis and alarm device, it is characterized in that: the contactor circuit and the fault diagnosis warning circuit that join with circuit-under-test are arranged, described contactor circuit is provided with resistance R 12, the R13 that is in series, and the auxiliary contact KM of contactor is parallel to the two ends of resistance R 13; Described fault diagnosis warning circuit is provided with the stabilized voltage supply IC1 that joins with power supply E, the output of stabilized voltage supply IC1 respectively with resistance R 1, capacitor W1, W2, W3 joins, the other end of resistance R 1 joins by the inverting input of resistance R 2 with comparer IC2, join and join by the in-phase input end of resistance R 3 by the inverting input of resistance R 4 with comparer IC4 with comparer IC3, the in-phase input end of the moving contact of potentiometer W1 and comparer IC2 joins, the inverting input of the moving contact of potentiometer W2 and comparer IC3 joins, and the in-phase input end of the moving contact of potentiometer W3 and comparer IC4 joins; The output terminal of comparer IC2, IC3, IC4 joins by the input end of resistance R 5, R6, R7 and inverter ic 5, IC6, IC7 respectively, the output terminal of inverter ic 5 joins with the LED that is in series 1, resistance R 8, the output terminal of inverter ic 6 joins with the LED that is in series 2, resistance R 9, the output terminal of inverter ic 7 joins with the LED that is in series 3, resistance R 10, the input end of inverter ic 5 joins by the output terminal of forward diode D1 and inverter ic 7, and the other end of resistance R 8, R9, R10 and power supply E join.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910208004 CN101699305B (en) | 2009-09-30 | 2009-10-15 | Automatic circuit fault diagnosis and alarm device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920203828 | 2009-09-30 | ||
| CN200920203828.1 | 2009-09-30 | ||
| CN 200910208004 CN101699305B (en) | 2009-09-30 | 2009-10-15 | Automatic circuit fault diagnosis and alarm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101699305A true CN101699305A (en) | 2010-04-28 |
| CN101699305B CN101699305B (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910208004 Expired - Fee Related CN101699305B (en) | 2009-09-30 | 2009-10-15 | Automatic circuit fault diagnosis and alarm device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101699305B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288867A (en) * | 2011-08-02 | 2011-12-21 | 华文博 | Line break detection device of ship remote control equipment |
| CN103063971A (en) * | 2012-11-29 | 2013-04-24 | 惠州Tcl移动通信有限公司 | Drilling detection circuit and detection device using the same |
| CN105963891A (en) * | 2016-06-16 | 2016-09-28 | 蚌埠依爱消防电子有限责任公司 | Start-stop switching circuit controlled by two wires, terminal load, detection circuit and detection method |
| CN108957309A (en) * | 2018-08-27 | 2018-12-07 | 深圳众城卓越科技有限公司 | The circuit and method for being attracted situation for detecting contactor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2170531Y (en) * | 1993-07-07 | 1994-06-29 | 戴右铭 | Essence safety relay |
| CN2342507Y (en) * | 1998-09-17 | 1999-10-06 | 郑云辉 | Charging and discharging protector for DC operation power source |
| CN2612131Y (en) * | 2003-04-04 | 2004-04-14 | 薛爱儒 | Fault prewarning protector of equipment |
| CN201051127Y (en) * | 2007-05-23 | 2008-04-23 | 福建师范大学 | Automatic failure detection circuit for high-voltage induction sensor |
-
2009
- 2009-10-15 CN CN 200910208004 patent/CN101699305B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2170531Y (en) * | 1993-07-07 | 1994-06-29 | 戴右铭 | Essence safety relay |
| CN2342507Y (en) * | 1998-09-17 | 1999-10-06 | 郑云辉 | Charging and discharging protector for DC operation power source |
| CN2612131Y (en) * | 2003-04-04 | 2004-04-14 | 薛爱儒 | Fault prewarning protector of equipment |
| CN201051127Y (en) * | 2007-05-23 | 2008-04-23 | 福建师范大学 | Automatic failure detection circuit for high-voltage induction sensor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288867A (en) * | 2011-08-02 | 2011-12-21 | 华文博 | Line break detection device of ship remote control equipment |
| CN103063971A (en) * | 2012-11-29 | 2013-04-24 | 惠州Tcl移动通信有限公司 | Drilling detection circuit and detection device using the same |
| CN103063971B (en) * | 2012-11-29 | 2015-11-25 | 惠州Tcl移动通信有限公司 | A kind of testing circuit and adopt the checkout equipment of this boring testing circuit of holing |
| CN105963891A (en) * | 2016-06-16 | 2016-09-28 | 蚌埠依爱消防电子有限责任公司 | Start-stop switching circuit controlled by two wires, terminal load, detection circuit and detection method |
| CN108957309A (en) * | 2018-08-27 | 2018-12-07 | 深圳众城卓越科技有限公司 | The circuit and method for being attracted situation for detecting contactor |
| CN108957309B (en) * | 2018-08-27 | 2023-12-29 | 深圳众城卓越科技有限公司 | Circuit and method for detecting contactor suction condition |
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| Publication number | Publication date |
|---|---|
| CN101699305B (en) | 2013-05-01 |
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