CN104796121A - Electronic switch - Google Patents
Electronic switch Download PDFInfo
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- CN104796121A CN104796121A CN201510185354.2A CN201510185354A CN104796121A CN 104796121 A CN104796121 A CN 104796121A CN 201510185354 A CN201510185354 A CN 201510185354A CN 104796121 A CN104796121 A CN 104796121A
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- circuit
- switch
- delay control
- control circuit
- signal
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- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 10
- 239000003381 stabilizer Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Electronic Switches (AREA)
Abstract
The invention provides an electronic switch. The electronic switch comprises a switch circuit, a first switch drive circuit, a power supply circuit, a delay control circuit, a sensing circuit, a signal detecting circuit and a detecting switch circuit, wherein the switch circuit and the power supply circuit are parallelly connected between a load end A and an alternating live wire L; the power supply circuit, the sensing circuit, the signal detecting circuit and the detecting switch circuit are respectively connected with the delay control circuit; the delay control circuit is sequentially connected with the first switch drive circuit and the switch circuit; when the switch circuit is connected, the delay control circuit disconnects the detecting switch circuit, and when the switch circuit is disconnected, the delay control circuit periodically connects the detecting switch circuit. By the arrangement, the signal detecting device can conveniently detect whether a power supply is connected to a forced turning-on control end C, and the current collecting effect passing the forced turning-on control end C is eliminated at the same time.
Description
Technical field
The present invention relates to a kind of electronic switch, specifically refer to a kind of electronic switch opened by force of meeting an urgent need.
Background technology
In order to take into account hommization and energy-conservation, between building ladder or the illumination of passage extensively adopt: the electronic switches such as infrared induction, controlled by sound and light, touch time delay.The common feature of this kind of switch is: open when meeting trigger condition, automatically closes after continuity a period of time.In order to security against fire, this kind of electronic switch is required to be designed to: except fire line terminal (L end) and face terminals (A end), must with enforced opening control terminal (C end).During installation, the enforced opening control terminal (C end) of all switches is connected in parallel on emergency power supply line, and emergency power supply line does not connect power supply at ordinary times, and electronic switch can normal switch.When running into fire-fighting or other accidents need illumination to ensure, enforced opening control terminal (C end) and fire line terminal (L end) access same emergency power supply, and all lighting loads being in closed condition will be forced to open, to ensure illumination.Controllable silicon commonly used by the switching circuit of current electronic switch is switch element.
The electronic switch of old scheme comprises: switching circuit, switch driving circuit, power supply circuits, delay control circuit, sensing circuit, (C end) signal deteching circuit, switching circuit in series is connected with switch driving circuit and delay control circuit output successively and controls by it in electricity consumption loop, sensing circuit (can be infrared induction, acoustic control, light-operated, remote control, various kinds of sensors or the sensor combinations such as touch) be connected for Time delay switch with the triggering signal input of delay control circuit; (C end) signal deteching circuit is connected between face terminals (A end) and enforced opening control terminal (C holds), its output is connected with switch driving circuit, electric current whether is had to flow through for detecting (C end), if electric current do not detected, delay switch normally uses, once detect that electric current is with regard to enforced opening switching circuit.
Result of use is: the enforced opening control terminal (C end) of all switches all links together when mounted, and (C end) is in vacant state at ordinary times, and electronic switch can normally work.When running into fire-fighting or other accidents need illumination to ensure, enforced opening control terminal (C end) access emergency power supply, the signal deteching circuit of now all electronic switches has all detected that electric current flows through (C end) so directly by switch driving circuit opening switch circuit.Because controllable silicon is designed to " non-full-shape conducting ", after electronic switch is opened, controllable silicon two ends still have electrical potential difference, and this electrical potential difference is used to provide ON state to power at ordinary times, now then take into account to maintain to continue normal on-mode.
This just determines existing scheme and has inevitable shortcoming: do not allow the fire-fighting equipments such as (C end) fire-fighting instruction in parallel with between zero line, fire alarm bell, because in the above-described state, even if when enforced opening control terminal (C end) does not access power supply, electronic switch is once open, voltage between load end (A end) and zero line will make electric current flow through (C holds) via above-mentioned fire-fighting equipment, cause (C end) testing circuit to report by mistake, making switch be in the normal on-mode of fire-fighting all the time cannot close.And the trend of (C end) fire-fighting equipment in parallel with between zero line design for fire protection exactly.
Patent of invention: CN201210257321.0 provides a kind of electronic switching technology started by force of meeting an urgent need allowing other loads in parallel with between zero line of emergency power supply line, as shown in Figure 1.
The technical scheme that this invention is taked is as follows: a kind of electronic switch, comprise switching circuit, drive circuit, delay control circuit, sensing circuit, signal deteching circuit, power supply circuits, the triggering signal input of delay control circuit is connected with sensing circuit, and output and switch driving circuit and switching circuit are connected with the whole group of control signal sent to it from being opened to time-delay closing successively; Power supply circuits provide power supply for other functional circuit; Signal deteching circuit is connected between enforced opening control end C and load end A, it is characterized in that: signal deteching circuit output is connected with the triggering signal input of delay control circuit.Delay control circuit gathers the output signal of fire-fighting signal deteching circuit and sensing circuit, and the situation according to two signals carries out break-make control to the main switch of switching circuit.Concrete control mode is as follows: automatically will disconnect after time delay by the mode control switch closing of circuit preset when the signal of delay control circuit triggering signal input collection reaches " activation threshold value ", the triggering signal from signal deteching circuit is blocked during described delay control circuit control switch closing of circuit, when its control switch circuit disconnects, detect the output signal of fire-fighting signal deteching circuit in real time.
Before this invention solves, technology does not allow (C end) fire-fighting in parallel with between zero line to indicate, the problem of the fire-fighting equipments such as fire alarm bell, but because it still adopts Real-Time Monitoring, and scheme sensitivity is lower selected by embodiment, when C end there being a large amount of switch in parallel, although the electric current flowing through respective testing circuit under switch-turn-ON states can be blocked, but under switching circuit closed condition, because power supply circuits still work, voltage between load end (A end) and (C holds) will make electric current flow through (C holds), these electric currents collect may allow load surprisingly work, especially day by day universal LED load.
Summary of the invention
For solving the problem, the invention provides a kind of electronic switch, comprising switching circuit, the first switch driving circuit, power supply circuits, delay control circuit, sensing circuit, signal deteching circuit, sense switch circuit; Switching circuit and power supply circuits are connected in parallel in load end A and exchange between live wire L; Power supply circuits connect delay control circuit, power to delay control circuit, controlled simultaneously, directly power when delay control circuit receives enforced opening information to load end A by delay control circuit; Delay control circuit is connected successively with the first switch driving circuit and switching circuit, by the first switch driving circuit control switch circuit, and then controls to exchange live wire L to the power supply of load end A; Sensing circuit connects delay control circuit, obtains working power from delay control circuit, collects process external signal and the triggering signal input of input time delay control circuit; Signal deteching circuit is connected with delay control circuit, and by sense switch circuit connected in series between enforced opening control end C and load end A, sends enforced opening information when detecting that enforced opening control end C has during plant-grid connection to delay control circuit; Sense switch circuit is connected with delay control circuit, control control circui sense switch circuit to disconnect when switching circuit conduction delay, enforced opening information is reported by mistake to avoid signal deteching circuit, when switching circuit disconnects, delay control circuit controls the property conducting of sense switch circuit period, so that signal deteching circuit detects enforced opening control end C whether have plant-grid connection, eliminate simultaneously flow through the electric current of enforced opening control end C collect effect.
Further, also comprise diode D1, enforced opening control end C is connected to signal deteching circuit by diode D1, to ensure circuit stability work; Diode D1 positive pole meets enforced opening control end C, and negative pole connects signal deteching circuit.
Preferably, signal deteching circuit comprises resistance R1 or electric capacity C1, and resistance R1 or electric capacity C1 is series between enforced opening control end C and load end A.
Further, also signal processing circuit is comprised; Delay control circuit is connected successively with signal processing circuit and sense switch circuit, signal processing circuit input time delay control circuit again after being processed by the signal that sense switch circuit exports, and improves stability and the reliability of electronic switch.
Preferred further, signal processing circuit comprises voltage stabilizing circuit and buffer circuit; The input connection signal testing circuit of voltage stabilizing circuit, buffer circuit is connected between voltage stabilizing circuit and delay control circuit, reliable to ensure the signal stabilization of input time delay control circuit.
Preferred further, voltage stabilizing circuit comprises voltage-stabiliser tube Z1, resistance R2, and voltage-stabiliser tube Z1 positive pole connects the cathode output end of signal deteching circuit, and voltage-stabiliser tube Z1 negative pole is by the cathode output end of resistance R2 connection signal testing circuit.
Preferred further, buffer circuit comprises optocoupler U1, resistance R3; The positive pole of optocoupler U1 is connected with the cathode output end of voltage stabilizing circuit by resistance R3, and negative pole connects the cathode output end of voltage stabilizing circuit, and the output of optocoupler U1 is connected with delay control circuit.
Preferably, sense switch circuit comprises second switch drive circuit and thyristor; Delay control circuit is connected successively with second switch drive circuit and thyristor, and delay control circuit controls the break-make of thyristor by second switch drive circuit, thus controls the break-make of sense switch circuit.
Preferred further, thyristor adopts triode Q1; Triode Q1 collector electrode connection signal testing circuit, emitter connects load end A, and collector electrode and base stage are connected with second switch drive circuit, and second switch drive circuit controls the break-make of sense switch circuit by the break-make controlled between collector and emitter.
Preferred further, sense switch circuit also comprises diode D2, and the collector electrode of triode Q1 is connected with second switch drive circuit by diode D2, to ensure circuit stability work; The positive pole of diode D2 connects the collector electrode of triode Q1, and negative pole connects second switch drive circuit.
Electronic switch provided by the invention is by controlling the property conducting of sense switch circuit period, eliminate flow through the electric current of enforced opening control end C collect effect, avoiding fire-fighting equipment in parallel surprisingly to work, further increasing stability and the reliability of switch simultaneously by increasing signal processing circuit.
Accompanying drawing explanation
Fig. 1 is electronic switch theory diagram disclosed in CN201210257321.0.
Fig. 2 is electronic switch theory diagram provided by the invention.
Fig. 3 is electronic switch embodiment block diagram provided by the invention.
Fig. 4 is electronic switch second embodiment schematic diagram provided by the invention.
Embodiment
For making those skilled in the art better understand the present invention, below in conjunction with accompanying drawing, embodiments of the present invention are further described.
As shown in Figure 2, electronic switch provided by the invention comprises switching circuit 1.1, first switch driving circuit 1.2, power supply circuits 1.3, delay control circuit 1.4, sensing circuit 1.5, signal deteching circuit 1.6, sense switch circuit 1.7, signal processing circuit 1.8; Switching circuit 1.1 and power supply circuits 1.3 are connected in parallel in load end A and exchange between live wire L; Power supply circuits 1.3, sensing circuit 1.5, sense switch circuit 1.7 are connected with delay control circuit respectively; Switching circuit 1.1 is connected successively with the first switch driving circuit 1.2, delay control circuit 1.4, signal processing circuit 1.8 and signal deteching circuit 1.6; During switching circuit 1.1 conduction delay, control circuit 1.4 controls sense switch circuit 1.7 and disconnects, when switching circuit 1.1 disconnects, delay control circuit 1.4 controls sense switch circuit 1.7 periodically conducting, so that signal deteching circuit 1.6 detects enforced opening control end C whether have plant-grid connection, eliminate simultaneously flow through the electric current of enforced opening control end C collect effect.
Be illustrated in figure 3 preferred embodiment, enforced opening control end C is connected to signal deteching circuit 1.6 by diode D1, and diode D1 positive pole meets enforced opening control end C, and negative pole connects signal deteching circuit 1.6; Signal processing circuit 1.8 comprises voltage stabilizing circuit 1.8.1 and buffer circuit 1.8.2; Voltage stabilizing circuit 1.8.1 comprises voltage-stabiliser tube Z1, resistance R2, and voltage-stabiliser tube Z1 positive pole connects the cathode output end of signal deteching circuit 1.6, and voltage-stabiliser tube Z1 negative pole is by the cathode output end of resistance R2 connection signal testing circuit 1.6; Buffer circuit 1.8.2 comprises optocoupler U1, resistance R3, and the positive pole of optocoupler U1 is connected with the cathode output end of voltage stabilizing circuit 1.8.1 by resistance R3, and negative pole connects the cathode output end of voltage stabilizing circuit 1.8.1, and the output of optocoupler U1 is connected with delay control circuit 1.4; Sense switch circuit 1.7 comprises second switch drive circuit 1.7.2, thyristor 1.7.1, diode D2; Delay control circuit 1.4 is connected successively with second switch drive circuit 1.7.2, diode D2 and thyristor 1.7.1; Thyristor 1.7.1 adopts triode Q1, triode Q1 collector electrode connection signal testing circuit 1.6 and being connected with second switch drive circuit 1.7.2 by diode D2, emitter connection load end A, and base stage is connected with second switch drive circuit 1.7.2; The positive pole of diode D2 connects the collector electrode of triode Q1, and negative pole connects second switch drive circuit 1.7.2; Signal deteching circuit 1.6 adopts resistance R1, and resistance R1 is series between enforced opening control end C and load end A.
Signal deteching circuit 1.6 also can adopt electric capacity C1, and as shown in Figure 4, electric capacity C1 is series between enforced opening control end C and load end A.
Be more than wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (10)
1. an electronic switch, comprises switching circuit, the first switch driving circuit, power supply circuits, delay control circuit, sensing circuit, signal deteching circuit, sense switch circuit; Described switching circuit and power supply circuits are connected in parallel in load end A and exchange between live wire L; Power supply circuits connect delay control circuit, power to delay control circuit, controlled simultaneously, directly power when delay control circuit receives enforced opening information to load end A by delay control circuit; Described delay control circuit is connected successively with the first switch driving circuit and switching circuit, by the first switch driving circuit control switch circuit, and then controls to exchange live wire L to the power supply of load end A; Described sensing circuit connects delay control circuit, obtains working power from delay control circuit, collects process external signal and the triggering signal input of input time delay control circuit; Described signal deteching circuit is connected with delay control circuit, and by sense switch circuit connected in series between enforced opening control end C and load end A, sends enforced opening information when detecting that enforced opening control end C has during plant-grid connection to delay control circuit; Described sense switch circuit is connected with delay control circuit, control control circui sense switch circuit to disconnect when switching circuit conduction delay, enforced opening information is reported by mistake to avoid signal deteching circuit, it is characterized in that: when switching circuit disconnects, delay control circuit controls the property conducting of sense switch circuit period, so that signal deteching circuit detects enforced opening control end C whether have plant-grid connection, eliminate simultaneously flow through the electric current of enforced opening control end C collect effect.
2., according to electronic switch described in claim 1, it is characterized in that: also comprise diode D1, enforced opening control end C is connected to signal deteching circuit by diode D1, to ensure circuit stability work; Described diode D1 positive pole meets enforced opening control end C, and negative pole connects signal deteching circuit.
3., according to electronic switch described in claim 1, it is characterized in that: described signal deteching circuit comprises resistance R1 or electric capacity C1, described resistance R1 or electric capacity C1 is series between enforced opening control end C and load end A.
4., according to electronic switch described in claim 1, it is characterized in that: also comprise signal processing circuit; Delay control circuit is connected successively with signal processing circuit and sense switch circuit, described signal processing circuit input time delay control circuit again after being processed by the signal that sense switch circuit exports, and improves stability and the reliability of electronic switch.
5., according to electronic switch described in claim 4, it is characterized in that: described signal processing circuit comprises voltage stabilizing circuit and buffer circuit; The input connection signal testing circuit of described voltage stabilizing circuit, described buffer circuit is connected between voltage stabilizing circuit and delay control circuit, reliable to ensure the signal stabilization of input time delay control circuit.
6. according to electronic switch described in claim 5, it is characterized in that: described voltage stabilizing circuit comprises voltage-stabiliser tube Z1, resistance R2, described voltage-stabiliser tube Z1 positive pole connects the cathode output end of signal deteching circuit, and voltage-stabiliser tube Z1 negative pole is by the cathode output end of resistance R2 connection signal testing circuit.
7., according to electronic switch described in claim 5, it is characterized in that: described buffer circuit comprises optocoupler U1, resistance R3; The positive pole of optocoupler U1 is connected with the cathode output end of voltage stabilizing circuit by resistance R3, and negative pole connects the cathode output end of voltage stabilizing circuit, and the output of optocoupler U1 is connected with delay control circuit.
8., according to electronic switch described in claim 1, it is characterized in that: described sense switch circuit comprises second switch drive circuit and thyristor; Delay control circuit is connected successively with second switch drive circuit and thyristor, and delay control circuit controls the break-make of thyristor by second switch drive circuit, thus controls the break-make of sense switch circuit.
9. according to electronic switch described in claim 8, it is characterized in that: described thyristor adopts triode Q1; Described triode Q1 collector electrode connection signal testing circuit, emitter connects load end A, and collector electrode and base stage are connected with second switch drive circuit, and second switch drive circuit controls the break-make of sense switch circuit by the break-make controlled between collector and emitter.
10. according to electronic switch described in claim 9, it is characterized in that: described sense switch circuit also comprises diode D2, the collector electrode of triode Q1 is connected with second switch drive circuit by diode D2, to ensure circuit stability work; The positive pole of described diode D2 connects the collector electrode of triode Q1, and negative pole connects second switch drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510185354.2A CN104796121A (en) | 2015-04-20 | 2015-04-20 | Electronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510185354.2A CN104796121A (en) | 2015-04-20 | 2015-04-20 | Electronic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104796121A true CN104796121A (en) | 2015-07-22 |
Family
ID=53560680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510185354.2A Withdrawn CN104796121A (en) | 2015-04-20 | 2015-04-20 | Electronic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104796121A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788363A (en) * | 2017-01-11 | 2017-05-31 | 惠州祺瑞电工有限公司 | A kind of electronic time-delay switch of achievable fault diagnosis |
| CN112134553A (en) * | 2019-06-25 | 2020-12-25 | 瑞昱半导体股份有限公司 | Switch control circuit and switch circuit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4757417A (en) * | 1984-04-19 | 1988-07-12 | The Nippon Signal Co., Ltd. | Monitoring system for load-driving switch circuits |
| CN102264168A (en) * | 2010-05-25 | 2011-11-30 | 合肥三川自控工程有限责任公司 | Induction lighting lamp and induction lighting system |
| CN102761324A (en) * | 2012-07-24 | 2012-10-31 | 惠州祺瑞电工有限公司 | Electric delay switch |
| CN202679334U (en) * | 2012-07-23 | 2013-01-16 | 惠州祺瑞电工有限公司 | A electronic switch which can be forcedly started in emergency |
| CN104333364A (en) * | 2014-11-04 | 2015-02-04 | 许蓬 | AC solid state relay and fault detecting method of load circuit of same |
| CN204442316U (en) * | 2015-04-20 | 2015-07-01 | 陈涛 | A kind of electronic switch |
-
2015
- 2015-04-20 CN CN201510185354.2A patent/CN104796121A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4757417A (en) * | 1984-04-19 | 1988-07-12 | The Nippon Signal Co., Ltd. | Monitoring system for load-driving switch circuits |
| CN102264168A (en) * | 2010-05-25 | 2011-11-30 | 合肥三川自控工程有限责任公司 | Induction lighting lamp and induction lighting system |
| CN202679334U (en) * | 2012-07-23 | 2013-01-16 | 惠州祺瑞电工有限公司 | A electronic switch which can be forcedly started in emergency |
| CN102761324A (en) * | 2012-07-24 | 2012-10-31 | 惠州祺瑞电工有限公司 | Electric delay switch |
| CN104333364A (en) * | 2014-11-04 | 2015-02-04 | 许蓬 | AC solid state relay and fault detecting method of load circuit of same |
| CN204442316U (en) * | 2015-04-20 | 2015-07-01 | 陈涛 | A kind of electronic switch |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788363A (en) * | 2017-01-11 | 2017-05-31 | 惠州祺瑞电工有限公司 | A kind of electronic time-delay switch of achievable fault diagnosis |
| CN106788363B (en) * | 2017-01-11 | 2023-11-17 | 惠州祺瑞电工有限公司 | Electronic time delay switch capable of realizing fault diagnosis |
| CN112134553A (en) * | 2019-06-25 | 2020-12-25 | 瑞昱半导体股份有限公司 | Switch control circuit and switch circuit |
| CN112134553B (en) * | 2019-06-25 | 2024-04-05 | 瑞昱半导体股份有限公司 | Switch control circuit and switch circuit |
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Effective date of registration: 20170303 Address after: Hui Tai Industrial Park in Guangdong province Huizhou city 516007 District No. 63 (Hengxin company plant) a building Applicant after: Huizhou Qirui Electric Co., Ltd. Address before: 516007 Huizhou Shuikou Town Health International New Town C1-08 Applicant before: Chen Tao |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20150722 |
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| WW01 | Invention patent application withdrawn after publication |