CN105445603A - Circuit-breaking detection device for load - Google Patents
Circuit-breaking detection device for load Download PDFInfo
- Publication number
- CN105445603A CN105445603A CN201510643363.1A CN201510643363A CN105445603A CN 105445603 A CN105445603 A CN 105445603A CN 201510643363 A CN201510643363 A CN 201510643363A CN 105445603 A CN105445603 A CN 105445603A
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- load
- controller
- power supply
- output terminal
- relay
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- 238000001514 detection method Methods 0.000 title abstract description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention relates to a circuit-breaking detection device for load. The detection device comprises a power supply and a load connected to the power supply. A rectifier bridge is connected between the power supply and the load; a photoelectric coupler is led out from the rectifier bridge; a signal output terminal of the photoelectric coupler is connected with a controller electrically; and a signal output terminal of the controller is connected with an alarm device. A transformer is connected to the power supply; and a power terminal of the controller and a power supply terminal of the alarm device are connected with an output terminal of a transformer electrically. Besides, the alarm device includes a loudspeaker; switching of the loudspeaker is connected by a relay; and a control terminal of the relay is connected with the output terminal of the controller electrically. The detection device has advantages of simple circuit connection structure convenient realization, and stable and reliable signal.
Description
Technical field
The present invention relates to electric power safety field, specifically a kind of load cut-off pick-up unit.
Background technology
Need in operation of power networks to use high voltage power distributing cabinet, in high voltage power distributing cabinet, in order to avoid humidity and temperature exceeds standard, need electrical heating and electric dehydrating unit are installed.For such electric heater unit, in concrete use, if when running into the situations such as heat load broken string or load do not connect, just there will be heating arrangement sky burns phenomenon, thus can cause heater failure phenomenon.In existing load thread break detector, usually control command is sent by central processing unit to the performance element be connected with load, performance element is generally relay or contactor, and the control command that central processing unit sends is applied to performance element, thus the access of control load or cut-out.In existing pick-up unit, the detection of whether breaking to load is all by connecting reometer between performance element and load, judges whether load breaks by observing reometer.Obviously, this kind of mode exists wastes time and energy and the insecure defect of testing result.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of circuit connection structure simple, realize convenient, detect reliable load cut-off pick-up unit.
For solving the problems of the technologies described above, the design feature of load broken thread detector of the present invention is the load comprising power supply and be connected on power supply, rectifier bridge is connected with between power supply and load, rectifier bridge leads to photoelectrical coupler, the signal output part of photoelectrical coupler is electrically connected with a controller, and the signal output part of controller is connected with warning device; Power supply is connected with transformer, and the power end of controller and the feeder ear of warning device are all electrically connected with the output terminal of transformer.
The electric power loop of described load is also connected with relay switch, and the control end of relay switch is electrically connected with the output terminal of controller.
Described warning device comprises loudspeaker, the switch of loudspeaker by Control and the control end of this relay be electrically connected with the output terminal of controller.
Described warning device comprises alarm lamp, the switch of alarm lamp by Control and the control end of this relay be electrically connected with the output terminal of controller.
Described warning device comprises alarm lamp and loudspeaker, and the switch of alarm lamp and loudspeaker all has relay and the control end of relay is electrically connected with the output terminal of controller.
Described alarm lamp is LED light emitting diode.
The invention has the beneficial effects as follows: by wire, two of rectifier bridge DC terminals are connected, when load normally works, voltage through rectifier bridge is certain value, photoelectrical coupler is transferred to controller after catching this voltage signal, when circuit power-off, the voltage through rectifier bridge is 0, and photoelectrical coupler catches less than voltage signal, controller sends alerting signal, and staff takes counter-measure after learning alerting signal in time; AC power after transformer for controller and warning device; Utilize audible alarm or light alarm or adopt sound and light alarm simultaneously, ensureing the reliability of alerting signal; Adopt light emitting diode as alarm lamp, circuit structure is simple, and cost is low.
In sum, the present invention have circuit connection structure simple, realize convenient and detect reliable advantage.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Fig. 1 is circuit theory schematic diagram of the present invention;
Fig. 2 is the physical circuit syndeton schematic diagram of rectifier bridge in the present invention.
Embodiment
With reference to accompanying drawing, the load 2 that load broken thread detector of the present invention comprises power supply 1 and is connected on power supply 1, rectifier bridge 3 is connected with between power supply 1 and load 2, rectifier bridge 3 leads to photoelectrical coupler 4, the signal output part of photoelectrical coupler 4 is electrically connected with a controller 5, the signal output part of controller 5 is connected with warning device 6; Power supply 1 is connected with transformer 7, the power end of controller 5 and the feeder ear of warning device 6 are all electrically connected with the output terminal of transformer 7.
With reference to accompanying drawing, the electric power loop of load 2 is also connected with relay switch 8, and the control end of relay switch 8 is electrically connected with the output terminal of controller 5.
With reference to accompanying drawing, warning device 6 comprises loudspeaker 61, the switch of loudspeaker 61 by Control and the control end of this relay be electrically connected with the output terminal of controller 5.
With reference to accompanying drawing, warning device 6 comprises alarm lamp 62, the switch of alarm lamp 62 by Control and the control end of this relay be electrically connected with the output terminal of controller 5.
With reference to accompanying drawing, warning device 6 comprises alarm lamp 62 and loudspeaker 61, and the switch of alarm lamp 62 and loudspeaker 61 all has relay and the control end of relay is electrically connected with the output terminal of controller 5.Wherein, above-mentioned alarm lamp 62 can adopt LED light emitting diode.
In said structure, by wire, two of rectifier bridge 3 DC terminals are connected, when load normally works, voltage through rectifier bridge is certain value, and photoelectrical coupler 4 is transferred to controller 5 after catching this voltage signal, when circuit power-off, voltage through rectifier 3 bridge is 0, photoelectrical coupler 4 catches less than voltage signal, and controller sends alerting signal, and staff takes counter-measure after learning alerting signal in time; AC power after transformer for controller 5 and warning device 6; Utilize audible alarm or light alarm or adopt sound and light alarm simultaneously, ensureing the reliability of alerting signal; Adopt light emitting diode as alarm lamp, circuit structure is simple, and cost is low.The present invention have circuit connection structure simple, realize convenient and detect reliable advantage.
In sum, the invention is not restricted to above-described embodiment.Those skilled in the art, in protection scope of the present invention, can carry out some changes and modification to concrete structure.Protection scope of the present invention should be as the criterion with claim of the present invention.
Claims (5)
1. a load broken thread detector, it is characterized in that the load (2) comprising power supply (1) and be connected on power supply (1), rectifier bridge (3) is connected with between power supply (1) and load (2), rectifier bridge (3) leads to photoelectrical coupler (4), the signal output part of photoelectrical coupler (4) is electrically connected with a controller (5), the signal output part of controller (5) is connected with warning device (6); Power supply (1) is connected with transformer (7), the power end of controller (5) and the feeder ear of warning device (6) are all electrically connected with the output terminal of transformer (7).
2. load broken thread detector as claimed in claim 1, is characterized in that described warning device (6) comprises loudspeaker (61), the switch of loudspeaker (61) by Control and the control end of this relay be electrically connected with the output terminal of controller (5).
3. load broken thread detector as claimed in claim 1, is characterized in that described warning device (6) comprises alarm lamp (62), the switch of alarm lamp (62) by Control and the control end of this relay be electrically connected with the output terminal of controller (5).
4. load broken thread detector as claimed in claim 1, it is characterized in that described warning device (6) comprises alarm lamp (62) and loudspeaker (61), the switch of alarm lamp (62) and loudspeaker (61) all has relay and the control end of relay is electrically connected with the output terminal of controller (5).
5. the load broken thread detector as described in claim 3 or 4, is characterized in that described alarm lamp (62) is for LED light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510643363.1A CN105445603A (en) | 2015-10-08 | 2015-10-08 | Circuit-breaking detection device for load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510643363.1A CN105445603A (en) | 2015-10-08 | 2015-10-08 | Circuit-breaking detection device for load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105445603A true CN105445603A (en) | 2016-03-30 |
Family
ID=55556031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510643363.1A Pending CN105445603A (en) | 2015-10-08 | 2015-10-08 | Circuit-breaking detection device for load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105445603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490305A (en) * | 2018-03-29 | 2018-09-04 | 华东理工大学 | A kind of wired broken string automatic testing method of automotive front baffle wire glass |
-
2015
- 2015-10-08 CN CN201510643363.1A patent/CN105445603A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490305A (en) * | 2018-03-29 | 2018-09-04 | 华东理工大学 | A kind of wired broken string automatic testing method of automotive front baffle wire glass |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |