CN203967720U - Low-voltage electrical apparatus protection system - Google Patents
Low-voltage electrical apparatus protection system Download PDFInfo
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- CN203967720U CN203967720U CN201420154199.9U CN201420154199U CN203967720U CN 203967720 U CN203967720 U CN 203967720U CN 201420154199 U CN201420154199 U CN 201420154199U CN 203967720 U CN203967720 U CN 203967720U
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Abstract
The utility model relates to a kind of low-voltage electrical apparatus protection system, include power circuit, overload detection circuit, switch triggering circuit, delay control circuit, audible alarm circuit, light prompt circuit, circuit breaker drive circuit, RFID module and handheld-type intelligent terminal, the output signal of described power circuit is transferred to overload detection circuit, the output signal of described overload detection circuit is sent to delay control circuit through switch triggering circuit, the output signal of described delay control circuit sends to respectively audible alarm circuit, light prompt circuit, circuit breaker drive circuit and RFID module, the output signal of described RFID module is sent to handheld-type intelligent terminal again, the utility model adopts technology of Internet of things, realize the intellectuality of low-voltage electrical apparatus protective device, there is networking simple, cost is low, intelligent program advantages of higher.
Description
Technical field
The utility model relates to electronic circuit field, particularly be a kind of low-voltage electrical apparatus protection system.
Background technology
Along with the demand for development of intelligent construction, need the electric elements of high-intelligentization; Low-voltage electrical apparatus comprises the elements such as circuit breaker, double-power supply switching device, isolating switch, but the intelligent degree of traditional low-voltage electrical apparatus protective device is low, and networking is complicated.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of low-voltage electrical apparatus protection system is provided.
The utility model solves the technical scheme that its technical problem adopts: low-voltage electrical apparatus protection system, include power circuit, overload detection circuit, switch triggering circuit, delay control circuit, audible alarm circuit, light prompt circuit, circuit breaker drive circuit, RFID module and handheld-type intelligent terminal, the output signal of described power circuit is transferred to overload detection circuit, the output signal of described overload detection circuit is sent to delay control circuit through switch triggering circuit, the output signal of described delay control circuit sends to respectively audible alarm circuit, light prompt circuit, circuit breaker drive circuit and RFID module, the output signal of described RFID module is sent to handheld-type intelligent terminal again.
Diode D7, resistance R and potentiometer W1 that described overload detection circuit is connected successively by current transformer LH and output thereof form.
Described switch triggering circuit adopts TWH8778 switch triggering module I C1.
Described delay control circuit adopts NE555 time base module IC2.
Described RFID module is made up of RFID electronic tag and rfid interrogator.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: the utility model adopts technology of Internet of things, realizes the intellectuality of low-voltage electrical apparatus protective device, have that networking is simple, cost is low, intelligent program advantages of higher.
Brief description of the drawings
Fig. 1 is frame assumption diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Further illustrate the utility model below in conjunction with the drawings and specific embodiments.
As Fig. 1, shown in Fig. 2, low-voltage electrical apparatus protection system of the present utility model, include power circuit, overload detection circuit, switch triggering circuit, delay control circuit, audible alarm circuit, light prompt circuit, circuit breaker drive circuit, RFID module and handheld-type intelligent terminal, the output signal of described power circuit is transferred to overload detection circuit, the output signal of described overload detection circuit is sent to delay control circuit through switch triggering circuit, the output signal of described delay control circuit sends to respectively audible alarm circuit, light prompt circuit, circuit breaker drive circuit and RFID module, the output signal of described RFID module is sent to handheld-type intelligent terminal again.
By diode, D1-D4 forms bridge rectifier, its output signal is through capacitor C 3 filtering, after voltage stabilizing didoe DW voltage stabilizing, for the machine provides operating voltage, the diode D7 that described overload detection circuit is connected successively by current transformer LH and output thereof, resistance R and potentiometer W1 form, phase line is passed to current transformer LH, in the time connecting load, current transformer H has alternating current to pass through, it is secondary just induced potential, and when the curent change that passes current transformer LH is larger, its secondary voltage of inducting is just higher, this voltage is through diode D7 rectification, capacitor C 2 filtering, after potentiometer W1 dividing potential drop as the triggering signal of switching circuit.Regulator potentiometer W1, can change control signal amplitude to adjust electricity consumption limit, for starting switch circuits for triggering provide suitable triggering level.When load power consumption exceedes when current value is set, H level of current transformer produces higher induced voltage, this voltage signal, through diode D7 rectification, capacitor C 2 filtering, after potentiometer W1 dividing potential drop, make TWH8778 switch triggering module I C1 triggering and conducting, it is the 1st years old, 3 pin conductings, also conducting of triode T1, the also forward conduction of diode D5 that triode T1 output connects, the 3rd pin of NE555 time base module IC2 transfers low level to by high level, the delay control circuit being formed by the NE555 time base module IC2 state of starting working, its the 3rd pin output high level, drive No. four control circuits simultaneously, first via output, through resistance R 7 current limlitings, make information ring device BDD obtain electric, send " ticking ... " alarm sound, represent that circuit has occurred, and overload fault has occurred, the second tunnel output high level, extinguishes LED 2, and Third Road output, makes the first controllable silicon SCR 1 enter triggering and conducting, connects shunt opening coil KM and sends and drive the action of threading off to circuit breaker, cuts off load power source, the output of Si road, make the second controllable silicon SCR 2 enter triggering and conducting, RFID module is made up of RFID electronic tag and read write line, because entering triggering and conducting, the second controllable silicon SCR 2 make the RFID electronic tag in RFID module outwards send warning message and label information, described RFID module is made up of RFID electronic tag and rfid interrogator, handheld-type intelligent terminal or System data management terminal (built-in rfid interrogator) receive after the warning message and label information of RFID electronic tag transmission, after processing by built-in microprocessor, orientation, display alarm address, thereby realize the digitlization of management, there is networking simple, cost is low, intelligent program advantages of higher.
Above-described is only a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented, and every equalization of doing according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (5)
1. low-voltage electrical apparatus protection system, it is characterized in that: include power circuit, overload detection circuit, switch triggering circuit, delay control circuit, audible alarm circuit, light prompt circuit, circuit breaker drive circuit, RFID module and handheld-type intelligent terminal, the output signal of described power circuit is transferred to overload detection circuit, the output signal of described overload detection circuit is sent to delay control circuit through switch triggering circuit, the output signal of described delay control circuit sends to respectively audible alarm circuit, light prompt circuit, circuit breaker drive circuit and RFID module, the output signal of described RFID module is sent to handheld-type intelligent terminal again.
2. low-voltage electrical apparatus protection system according to claim 1, is characterized in that: diode D7, resistance R and potentiometer W1 that described overload detection circuit is connected successively by current transformer LH and output thereof form.
3. low-voltage electrical apparatus protection system according to claim 1, is characterized in that: described switch triggering circuit adopts TWH8778 switch triggering module I C1.
4. low-voltage electrical apparatus protection system according to claim 1, is characterized in that: described delay control circuit adopts NE555 time base module IC2.
5. low-voltage electrical apparatus protection system according to claim 1, is characterized in that: described RFID module is made up of RFID electronic tag and rfid interrogator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154199.9U CN203967720U (en) | 2014-04-01 | 2014-04-01 | Low-voltage electrical apparatus protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420154199.9U CN203967720U (en) | 2014-04-01 | 2014-04-01 | Low-voltage electrical apparatus protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203967720U true CN203967720U (en) | 2014-11-26 |
Family
ID=51928264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420154199.9U Expired - Fee Related CN203967720U (en) | 2014-04-01 | 2014-04-01 | Low-voltage electrical apparatus protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203967720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221266A (en) * | 2016-12-21 | 2018-06-29 | 青岛海尔滚筒洗衣机有限公司 | A kind of heating control system of more washing machines |
-
2014
- 2014-04-01 CN CN201420154199.9U patent/CN203967720U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221266A (en) * | 2016-12-21 | 2018-06-29 | 青岛海尔滚筒洗衣机有限公司 | A kind of heating control system of more washing machines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20150401 |
|
| EXPY | Termination of patent right or utility model |