CN205789723U - A kind of relay test protection circuit - Google Patents
A kind of relay test protection circuit Download PDFInfo
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- CN205789723U CN205789723U CN201620509643.3U CN201620509643U CN205789723U CN 205789723 U CN205789723 U CN 205789723U CN 201620509643 U CN201620509643 U CN 201620509643U CN 205789723 U CN205789723 U CN 205789723U
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Abstract
This utility model relates to a kind of relay test protection circuit; including relay; also include counting module and the temperature sensing module connecting relay; the outfan of counting module and temperature sensing module connects a processor MCU respectively; the outfan of described processor MCU connects display device, and the outfan of processor MCU is also connected with described relay.This utility model reasonable setting by circuit, it is achieved that relay detection mechanical life and temperature detection are carried out simultaneously, and when relay mechanical life and temperature reach a threshold value, control relay and disconnect, and output display information.Which system reduces the incidence rate of danger, it is ensured that the using effect of relay and safety.
Description
Technical field
This utility model relates to the detection protection circuit of a kind of relay.
Background technology
In prior art, relay would generally arrange temperature sensing circuit, but the circuit of rare its mechanical performance of detection, typically its on-off times will not be counted, and whether reach the limit values according to number of times and change relay.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, this utility model provides a kind of and with mechanical life, relay temperature detection is detected the detection protection device combined.
The technical scheme in the invention for solving the technical problem is:
A kind of relay test protection circuit; including relay; it is characterized in that: also include connecting counting module and the temperature sensing module of relay; described counting module and the outfan of temperature sensing module connect a processor MCU respectively; the outfan of described processor MCU connects display device, and the outfan of processor MCU is also connected with described relay.
As preferably, one termination power of the coil of relay, the other end connects the colelctor electrode of an audion, the base stage of audion connects the outfan of processor MCU by base resistance, the outfan of described relay connects load and connects the counting end of processor MCU, and described counting module is arranged in processor MCU.
As preferably, temperature sensing module includes the critesistor being arranged on relay, and one end of described critesistor connects power supply, and the other end connects the analog digital conversion end of processor MCU, and described critesistor is also by the resistance being connected in parallel and capacity earth.
When the temperature of himself or canning caused by this relay on-off action reaches certain value, temperature sensing module transmitting the signal of telecommunication, treated device MCU processes information, controls this relay and disconnects, and shows the signal identification that need to overhaul in a display device.When relay on-off action number of times is counted by counting module, when reaching certain limit, treated device MCU controls this relay and disconnects, and shows the signal identification that need to change in a display device.Which system reduces the incidence rate of danger, it is ensured that the using effect of relay and safety.
Detailed process is, when relay work, processor MCU exports high level, triode ON, and the two ends electric current of relay coil flows through, then relay adhesive, and load conduction works.Meanwhile, the counting end of relay output end connection processor MCU carries out counting once.When relay opening and closing number of times reaches certain limit, processor MCU output low level, audion disconnects, and relay disconnects.And processor MCU controls the signal labelling that display device display is changed.At work, critesistor changes relay according to the temperature of relay, and is gathered by the analog digital conversion end of processor MCU, and when its temperature reaches a threshold value, processor MCU output low level, audion disconnects, and relay disconnects.And processor MCU controls the signal labelling that display device display is changed.
The beneficial effects of the utility model are: this utility model reasonable setting by circuit, achieve relay detection mechanical life and temperature detection is carried out simultaneously, and when relay mechanical life and temperature reach a threshold value, control relay and disconnect, and output display information.Which system reduces the incidence rate of danger, it is ensured that the using effect of relay and safety.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model.
Fig. 2 is the electrical block diagram of Fig. 1.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1, 2; a kind of relay test protection circuit; including relay 1; also include counting module 2 and the temperature sensing module 3 connecting relay; described counting module and the outfan of temperature sensing module connect a processor MCU4 respectively; the outfan of described processor MCU connects display device, and the outfan of processor MCU is also connected with described relay.
One termination power of the coil of relay, the other end connects the colelctor electrode of an audion Q, the base stage of audion Q connects the outfan of processor MCU by base resistance, the outfan of described relay connects load and connects the counting end of processor MCU, and described counting module is arranged in processor MCU.Temperature sensing module includes the critesistor RT being arranged on relay, and one end of critesistor connects power supply, and the other end connects the analog digital conversion end of processor MCU, and critesistor RT is also by the resistance being connected in parallel and capacity earth.
When the temperature of himself or canning caused by this relay 1 on-off action reaches certain value, temperature sensing module transmitting the signal of telecommunication, treated device MCU processes information, controls this relay and disconnects, and shows the signal identification that need to overhaul in a display device.When relay on-off action number of times is counted by counting module, when reaching certain limit, treated device MCU4 controls this relay and disconnects, and shows the signal identification that need to change in a display device.Which system reduces the incidence rate of danger, it is ensured that the using effect of relay and safety.
Detailed process is, when relay work, processor MCU exports high level, and audion Q turns on, and the two ends electric current of relay coil flows through, then relay adhesive, and load conduction works.Meanwhile, the counting end of relay output end connection processor MCU carries out counting once.When relay opening and closing number of times reaches certain limit, processor MCU output low level, audion Q disconnects, and relay disconnects.And processor MCU controls the signal labelling that display device display is changed.At work, critesistor changes relay according to the temperature of relay, and is gathered by the analog digital conversion end of processor MCU, and when its temperature reaches a threshold value, processor MCU output low level, audion disconnects, and relay disconnects.And processor MCU controls the signal labelling that display device display is changed.
This utility model reasonable setting by circuit, it is achieved that relay detection mechanical life and temperature detection are carried out simultaneously, and when relay mechanical life and temperature reach a threshold value, control relay and disconnect, and output display information.Which system reduces the incidence rate of danger, it is ensured that the using effect of relay and safety.
Claims (3)
1. a relay test protection circuit; including relay; it is characterized in that: also include connecting counting module and the temperature sensing module of relay; described counting module and the outfan of temperature sensing module connect a processor MCU respectively; the outfan of described processor MCU connects display device, and the outfan of processor MCU is also connected with described relay.
A kind of relay test protection circuit the most according to claim 1; it is characterized in that: a termination power of the coil of described relay; the other end connects the colelctor electrode of an audion; the base stage of audion connects the outfan of processor MCU by base resistance; the outfan of described relay connects load and connects the counting end of processor MCU, and described counting module is arranged in processor MCU.
A kind of relay test protection circuit the most according to claim 2; it is characterized in that: described temperature sensing module includes the critesistor being arranged on relay; one end of described critesistor connects power supply; the other end connects the analog digital conversion end of processor MCU, and described critesistor is also by the resistance being connected in parallel and capacity earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620509643.3U CN205789723U (en) | 2016-05-31 | 2016-05-31 | A kind of relay test protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620509643.3U CN205789723U (en) | 2016-05-31 | 2016-05-31 | A kind of relay test protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205789723U true CN205789723U (en) | 2016-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620509643.3U Active CN205789723U (en) | 2016-05-31 | 2016-05-31 | A kind of relay test protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205789723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741991A (en) * | 2018-12-29 | 2019-05-10 | 深圳和而泰智能控制股份有限公司 | A kind of method, apparatus and electronic equipment controlling relay |
-
2016
- 2016-05-31 CN CN201620509643.3U patent/CN205789723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109741991A (en) * | 2018-12-29 | 2019-05-10 | 深圳和而泰智能控制股份有限公司 | A kind of method, apparatus and electronic equipment controlling relay |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |