CN202903933U - Fault indication circuit of control and protection electric appliance - Google Patents
Fault indication circuit of control and protection electric appliance Download PDFInfo
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- CN202903933U CN202903933U CN 201220630537 CN201220630537U CN202903933U CN 202903933 U CN202903933 U CN 202903933U CN 201220630537 CN201220630537 CN 201220630537 CN 201220630537 U CN201220630537 U CN 201220630537U CN 202903933 U CN202903933 U CN 202903933U
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Abstract
A fault indication circuit of a control and protection electric appliance belongs to the low-voltage electric appliance technology field. The fault indication circuit comprises a master control circuit and a fault query circuit. The circuit is characterized in that the fault query circuit is formed by an energy storage circuit, a switch circuit, a control circuit and a display circuit; a power supply output terminal of the master control circuit is connected with an input terminal of the energy storage circuit and the input terminal of the control circuit; the output terminal of the energy storage circuit is connected with the input terminal of the switch circuit; the output terminal of the switch circuit is connected with the put terminal of the control circuit; a signal input terminal of the control circuit is connected with a signal output terminal of the master control circuit; the output terminal of the control circuit is connected with the display circuit. The circuit has the following advantages that usage convenience of a user is increased; power supply reliability of a fault query circuit can be guaranteed.
Description
Technical field
The utility model belongs to the low voltage electrical apparatus technology field, is specifically related to a kind of control and the failure indicating circuit of protecting electrical equipment
Background technology
The function of isolating switch, contactor and motor protector that control and protective switching device is integrated has that volume is little, breaking capacity is high, the life-span is long, the comprehensive characteristics of defencive function, is a staple product of electrical technology field.Control and protective switching device in the market mainly is the failure cause of inquiring about distribution system by pilot lamp or liquid crystal panel, but since in most of the cases after distribution system breaks down primary power can be cut off, thereby cause the control and protective switching device dead electricity, cause the user can't carry out fault inquiry; Perhaps need after the accessory power supply power supply, to inquire about again, thereby cause certain trouble to the user.The circuit of a kind of " electric motor control protector " is disclosed such as Chinese utility model patent Granted publication CN100413170C; control protection module wherein receives the signal of isolating switch, contactor and the input of current monitoring module and communicates the reception steering order with the host computer that is connected on the network; then through signal conversion and analytical calculation; export corresponding instruction to isolating switch and contactor; export simultaneously all kinds of parameters; be included in display system state and failure message on the display, and upload to host computer.But after system's dead electricity, if there is not external accessory power supply, this circuit will quit work, and can't carry out any operation, comprise demonstration and the inquiry of all kinds of parameters.
In view of above-mentioned prior art, be necessary to be improved, for this reason, the applicant has done useful design, and technical scheme described below produces under this background
Summary of the invention
It is a kind of after the distribution system dead electricity that task of the present utility model is to provide, and do not need external accessory power supply also can carry out the demonstration of all kinds of parameters and the control and the failure indicating circuit of protecting electrical equipment of inquiry.
Task of the present utility model is finished like this; a kind of control and the failure indicating circuit of protecting electrical equipment; comprise governor circuit and fault inquiry circuit; it is characterized in that: described fault inquiry circuit is by tank circuit; on-off circuit; control circuit and display circuit form; the power output end of governor circuit is connected with the input end of the input end of tank circuit and control circuit; the output terminal of tank circuit is connected with the input end of on-off circuit; the output terminal of on-off circuit is connected with the input end of control circuit; the signal input part of control circuit is connected with the signal output part of governor circuit, and the output terminal of control circuit is connected with display circuit.
In a specific embodiment of the present utility model, described fault inquiry circuit comprises single-chip microcomputer IC, diode D1～D3, electric capacity E1, resistance R 1～R4, touch-switch SW1 and LED 1～LED3, wherein, single-chip microcomputer IC and diode D2 are used for the composition control circuit, electric capacity E1, resistance R 4 and diode D3 are used for forming tank circuit, touch-switch SW1 and diode D1 are used for forming on-off circuit, and LED 1～LED3 and resistance R 1～R3 are used for forming display circuit.
The utility model is owing to adopted said structure, and control and protective switching device can be indicated dependent failure before the distribution system dead electricity, also can realize the fault inquiry function by not external accessory power supply after the distribution system dead electricity, has increased user's ease of use; Further, owing to power supply and the unidirectional isolation of governor circuit of fault inquiry circuit, can guarantee the power supply reliability of fault inquiry circuit.
Description of drawings
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is fault inquiry circuit diagram of the present utility model.
Embodiment
In order to make the public can fully understand technical spirit of the present utility model and beneficial effect; the applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but the applicant is not restriction to technical scheme to the description of embodiment, anyly makes form and immaterial variation all should be considered as protection domain of the present utility model according to the utility model design.
See also Fig. 1; a kind of control and the failure indicating circuit of protecting electrical equipment; comprise governor circuit and fault inquiry circuit; described governor circuit receives the signal of isolating switch, contactor and the input of current monitoring module; through signal conversion and analytical calculation; export corresponding instruction to isolating switch and contactor, and on display display system state and failure message, export simultaneously corresponding failure message to the fault inquiry circuit.
Described fault inquiry circuit is comprised of tank circuit, on-off circuit, control circuit and display circuit, the power circuit of governor circuit is connected with the input end of the input end of tank circuit and control circuit, the output terminal of tank circuit is connected with the input end of on-off circuit, the output terminal of on-off circuit is connected with the power input of control circuit, the signal input part of control circuit is connected with the signal output part of governor circuit, and the output terminal of control circuit is connected with display circuit.The unidirectional isolation of the power supply of described fault inquiry circuit and governor circuit, be that governor circuit is to the fault inquiry circuit supply, and the fault inquiry circuit is not powered to governor circuit, therefore, when the fault inquiry circuit carries out fault inquiry after dead electricity, tank circuit need not be powered to governor circuit, guarantees the reliable power supply of fault inquiry circuit.
See also Fig. 2, described fault inquiry circuit comprises single-chip microcomputer IC, diode D1～D3, electric capacity E1, resistance R 1～R4, touch-switch SW1 and LED 1～LED3, wherein, single-chip microcomputer IC and diode D2 are used for the composition control circuit, electric capacity E1, resistance R 4 and diode D3 are used for forming tank circuit, touch-switch SW1 and diode D1 are used for forming on-off circuit, and LED 1～LED3 and resistance R 1～R3 are used for forming display circuit.In the present embodiment, single-chip microcomputer IC is with E2PROM, and concrete model is R5F211B, and resistance R 1～R4 is current-limiting resistance.Particularly, one end of the resistance R 4 of tank circuit connects the negative pole of diode D3, the other end of resistance R 4 is connected with the positive pole of electric capacity E1, and be connected to the end of the touch-switch SW1 of on-off circuit, the other end of touch-switch SW1 is connected with the positive pole of diode D1, the negative pole of the diode D2 of the negative pole of diode D1 and control circuit is connected to 7 pin of single-chip microcomputer IC jointly, 1 pin of single-chip microcomputer IC is connected with an end of the resistance R 1 of display circuit, the other end of resistance R 1 is connected with the positive pole of LED 1,20 pin of single-chip microcomputer IC are connected with an end of the resistance R 2 of display circuit, the other end of resistance R 2 is connected with the positive pole of LED 2,19 pin of single-chip microcomputer IC are connected with an end of the resistance R 3 of display circuit, the other end of resistance R 3 is connected with the positive pole of LED 3, the positive pole of the positive pole of the diode D3 of tank circuit and the diode D2 of control circuit connects the working power VCC of governor circuit output, the negative pole of the electric capacity E1 of tank circuit jointly, the negative pole of 5 pin of the single-chip microcomputer IC of control circuit and the LED 1 of display circuit, the negative pole of light emitting diode LED2, the negative pole common ground of light emitting diode LED3.
Please consult Fig. 1, when the control and protective switching device system worked, governor circuit was powered to tank circuit again, gave electric capacity E1 charging by diode D3, resistance R 4, powered simultaneously to control circuit, powered to single-chip microcomputer IC by diode D2.14,15,17,18 pin of single-chip microcomputer IC are connected to governor circuit, receive the fault-signal of governor circuit output, and failure message stored among the E2PROM that carries, simultaneously by the I/O mouth, namely 1 pin, 20 pin and 19 pin output high level are lighted respectively corresponding LED 1～LED3 after resistance R 1～R3 current limliting; After system's dead electricity, single-chip microcomputer IC quits work, and LED 1～LED3 extinguishes.When needs inquiry failure message, press touch-switch SW1, the electric capacity E1 of tank circuit powers to single-chip microcomputer IC by diode D1, single-chip microcomputer IC gets electric work, the failure message that is stored in E2PROM is read, by corresponding I/O mouth, namely 1 pin, 20 pin and 19 pin are exported high level, light corresponding LED 1～LED3 and carry out indicating fault, in the present embodiment, LED 1～LED3 is corresponding overload, short circuit and melting welding fault respectively
Claims (2)
1.
A kind of control and the failure indicating circuit of protecting electrical equipment; comprise governor circuit and fault inquiry circuit; it is characterized in that: described fault inquiry circuit is by tank circuit; on-off circuit; control circuit and display circuit form; the power output end of governor circuit is connected with the input end of the input end of tank circuit and control circuit; the output terminal of tank circuit is connected with the input end of on-off circuit; the output terminal of on-off circuit is connected with the input end of control circuit; the signal input part of control circuit is connected with the signal output part of governor circuit, and the output terminal of control circuit is connected with display circuit.
2.
A kind of control according to claim 1 and the failure indicating circuit of protecting electrical equipment; it is characterized in that described fault inquiry circuit comprises single-chip microcomputer IC, diode D1～D3, electric capacity E1, resistance R 1～R4, touch-switch SW1 and LED 1～LED3; wherein; single-chip microcomputer IC and diode D2 are used for the composition control circuit; electric capacity E1, resistance R 4 and diode D3 are used for forming tank circuit; touch-switch SW1 and diode D1 are used for forming on-off circuit, and LED 1～LED3 and resistance R 1～R3 are used for forming display circuit
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630537 CN202903933U (en) | 2012-11-26 | 2012-11-26 | Fault indication circuit of control and protection electric appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220630537 CN202903933U (en) | 2012-11-26 | 2012-11-26 | Fault indication circuit of control and protection electric appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903933U true CN202903933U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220630537 Expired - Lifetime CN202903933U (en) | 2012-11-26 | 2012-11-26 | Fault indication circuit of control and protection electric appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903933U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869195A (en) * | 2014-03-31 | 2014-06-18 | 国电科学技术研究院银川电力技术分院 | Engine rotor over-voltage protection device tester |
| CN105527525A (en) * | 2016-01-26 | 2016-04-27 | 江苏才易电子科技有限公司 | Intelligent test board compatible with rapid charger and test method |
| CN107870846A (en) * | 2016-09-23 | 2018-04-03 | 伊姆西Ip控股有限责任公司 | Fault element indicating means, equipment and system |
-
2012
- 2012-11-26 CN CN 201220630537 patent/CN202903933U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103869195A (en) * | 2014-03-31 | 2014-06-18 | 国电科学技术研究院银川电力技术分院 | Engine rotor over-voltage protection device tester |
| CN103869195B (en) * | 2014-03-31 | 2017-03-22 | 国电科学技术研究院银川电力技术分院 | Engine rotor over-voltage protection device tester |
| CN105527525A (en) * | 2016-01-26 | 2016-04-27 | 江苏才易电子科技有限公司 | Intelligent test board compatible with rapid charger and test method |
| CN107870846A (en) * | 2016-09-23 | 2018-04-03 | 伊姆西Ip控股有限责任公司 | Fault element indicating means, equipment and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |