CN103063904A - Zero cross detection circuit - Google Patents
Zero cross detection circuit Download PDFInfo
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- CN103063904A CN103063904A CN201210584484XA CN201210584484A CN103063904A CN 103063904 A CN103063904 A CN 103063904A CN 201210584484X A CN201210584484X A CN 201210584484XA CN 201210584484 A CN201210584484 A CN 201210584484A CN 103063904 A CN103063904 A CN 103063904A
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Abstract
The invention relates to a zero cross detection circuit which comprises an isolation optical coupler E1, a drive triode Q10 and a second stage wave filtering circuit. A collector of the drive triode Q10 is connected with the isolation optical coupler E1 and used for controlling on-off of the isolation optical coupler E1. A first stage wave filtering circuit is connected with a power line and used for eliminating interference on the power line. The second stage wave filtering circuit is connected with a base electrode and an emitting electrode of the drive triode Q10 and used for preventing error break-over of the drive triode Q10. The zero cross detection circuit is simple in structure, low in cost, capable of inputting zero cross point moments of power frequency alternating current in a pulse mode to a carrier wave circuit module and providing the basis for zero cross communication and phase judgment, strong in anti-interference ability, and high in detection precision. Moreover, power consumption can be lowered to 0.025W.
Description
Technical field
The present invention relates to a kind of testing circuit, specifically, relate to a kind of zero cross detection circuit for power network power frequency component zero passage is detected.
Background technology
Present known zero cross detection circuit, great majority exist that circuit structure is complicated, cost is high, or the problem such as accuracy of detection is low, power consumption is large.The zero cross detection circuit that uses in the carrier module as shown in Figure 1, although this zero cross detection circuit is simple in structure, cost is low, but accuracy of detection is very low, only is used for the identification of carrier module place phase place, can not be used for the synchronizing signal of zero passage communication, and power consumption is very large, is approximately 0.2W.
Summary of the invention
The problems referred to above such as the present invention is directed to complex structure that existing zero cross detection circuit exists, cost is high, accuracy of detection is low, power consumption is large provide a kind of simple in structure, low in energy consumption, accuracy of detection is high and power consumption is little zero cross detection circuit.
Technical scheme of the present invention is: a kind of zero cross detection circuit, this circuit comprises isolation optocoupler E1, drives triode Q10 and secondary filter circuit, wherein, the collector that drives triode Q10 is connected with isolation optocoupler E1, be used for controlling the break-make of isolation optocoupler E1, first order filtering circuit is connected with line of electric force, is used for eliminating the interference on the line of electric force, second level filtering circuit is connected with emitter with the base stage that drives triode Q10, is used for preventing from driving triode Q10 and misleads.
Preferably, first order filtering circuit is the RC filtering circuit that is comprised of resistance R 51, resistance R 52 and capacitor C 51, and second level filtering circuit is the RC filtering circuit that is comprised of resistance R 54 and capacitor C 53.
Preferably, the input end of the first filtering circuit is in series with diode D51, and output terminal is parallel with divider resistance R53, and resistance R 51, resistance R 52 and divider resistance R53 form bleeder circuit.
Preferably, second level filtering circuit is associated with storage capacitor C52, is used to isolation optocoupler E1 that the maintenance electric current is provided.
Preferably, described storage capacitor C52 also is parallel with stabilivolt ZD1, and the voltage that is used for clamper C52 two ends is 5.1V.
Preferably, second level filtering circuit also is parallel with protection diode D52.
The invention has the beneficial effects as follows: the present invention is simple in structure, cost is low, the zero crossing of industrial-frequency alternating current can be inputed to the carrier current channel module in the mode of pulse constantly, thereby for zero passage communication and phase judgment provide foundation, strong anti-interference performance, accuracy of detection is high, low in energy consumption, power consumption can be reduced to 0.025W.
Description of drawings
Accompanying drawing 1 is the circuit theory diagrams of prior art.
Accompanying drawing 2 is the circuit theory diagrams of the specific embodiment of the invention.
Accompanying drawing 3 is the structured flowchart of the specific embodiment of the invention.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
A kind of zero cross detection circuit, this circuit comprises isolation optocoupler E1, drives triode Q10 and secondary filter circuit, wherein, the collector that drives triode Q10 is connected with isolation optocoupler E1, be used for controlling the break-make of isolation optocoupler E1, first order filtering circuit is connected with line of electric force, is used for eliminating the interference on the line of electric force, second level filtering circuit is connected with emitter with the base stage that drives triode Q10, is used for preventing from driving triode Q10 and misleads.
First order filtering circuit is the RC filtering circuit that is comprised of resistance R 51, resistance R 52 and capacitor C 51, and second level filtering circuit is the RC filtering circuit that is comprised of resistance R 54 and capacitor C 53.
The input end of the first filtering circuit is in series with diode D51, and output terminal is parallel with divider resistance R53, and resistance R 51, resistance R 52 and divider resistance R53 form bleeder circuit.
Second level filtering circuit is associated with storage capacitor C52, is used to isolation optocoupler E1 that the maintenance electric current is provided.
Above-mentioned storage capacitor C52 also is parallel with stabilivolt ZD1, and the voltage that is used for clamper C52 two ends is 5.1V.
Second level filtering circuit also is parallel with protection diode D52.
Claims (6)
1. zero cross detection circuit, it is characterized in that: this circuit comprises isolation optocoupler E1, drives triode Q10 and secondary filter circuit, wherein, the collector that drives triode Q10 is connected with isolation optocoupler E1, be used for controlling the break-make of isolation optocoupler E1, first order filtering circuit is connected with line of electric force, is used for eliminating the interference on the line of electric force, second level filtering circuit is connected with emitter with the base stage that drives triode Q10, is used for preventing from driving triode Q10 and misleads.
2. zero cross detection circuit according to claim 1 is characterized in that: the RC filtering circuit of first order filtering circuit for being comprised of resistance R 51, resistance R 52 and capacitor C 51, second level filtering circuit is the RC filtering circuit that is comprised of resistance R 54 and capacitor C 53.
3. zero cross detection circuit according to claim 2, it is characterized in that: the input end of the first filtering circuit is in series with diode D51, and output terminal is parallel with divider resistance R53, and resistance R 51, resistance R 52 and divider resistance R53 form bleeder circuit.
4. zero cross detection circuit according to claim 1, it is characterized in that: second level filtering circuit is associated with storage capacitor C52, is used to isolation optocoupler E1 that the maintenance electric current is provided.
5. zero cross detection circuit according to claim 4, it is characterized in that: described storage capacitor C52 also is parallel with stabilivolt ZD1, and the voltage that is used for clamper C52 two ends is 5.1V.
6. zero cross detection circuit according to claim 1 is characterized in that: second level filtering circuit also is parallel with protection diode D52.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584484XA CN103063904A (en) | 2012-12-30 | 2012-12-30 | Zero cross detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210584484XA CN103063904A (en) | 2012-12-30 | 2012-12-30 | Zero cross detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103063904A true CN103063904A (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210584484XA Pending CN103063904A (en) | 2012-12-30 | 2012-12-30 | Zero cross detection circuit |
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| CN (1) | CN103063904A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995176A (en) * | 2014-05-16 | 2014-08-20 | 南京能瑞自动化设备股份有限公司 | Zero-crossing signal generating method based on signal of coupling coil |
| WO2015139456A1 (en) * | 2014-03-18 | 2015-09-24 | 瑞斯康微电子（深圳）有限公司 | Zero-cross detection circuit for mains supply |
| CN105891589A (en) * | 2016-05-26 | 2016-08-24 | 宁波三星医疗电气股份有限公司 | Zero crossing detection circuit for power lines and manufacturing method of zero crossing detection circuit |
| CN107425834A (en) * | 2017-06-26 | 2017-12-01 | 青岛东软载波科技股份有限公司 | Power line zero crossing modulation circuit |
| CN108400799A (en) * | 2018-04-18 | 2018-08-14 | 深圳市全智芯科技有限公司 | A kind of method of novel unlatching wireless pairing |
| CN110244172A (en) * | 2018-12-28 | 2019-09-17 | 国网浙江长兴县供电有限公司 | A kind of zero firewire detection system of family table inlet wire and method |
| CN111413538A (en) * | 2020-03-31 | 2020-07-14 | 西安许继电力电子技术有限公司 | Detection circuit and detection method for bridge-free topology current zero-crossing point at wireless charging receiving side |
| CN112616218A (en) * | 2020-12-21 | 2021-04-06 | 广东思万奇科技有限公司 | Interference elimination method and device for dimmable LED lamp |
| CN113054968A (en) * | 2021-03-05 | 2021-06-29 | 苏州海鹏科技有限公司 | Optical coupler driving circuit with common-mode interference resistance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102012455A (en) * | 2010-11-03 | 2011-04-13 | 苏州合欣美电子科技有限公司 | Zero-crossing detection circuit |
| CN201955387U (en) * | 2011-02-22 | 2011-08-31 | 武汉盛帆电子股份有限公司 | Zero-crossing detecting circuit with low power consumption for carrier wave communication |
| CN102662898A (en) * | 2012-04-06 | 2012-09-12 | 华为技术有限公司 | Host-slave compatibility method, device and system for USB (universal serial bus) device |
| CN102662104A (en) * | 2012-04-18 | 2012-09-12 | 华为技术有限公司 | Zero-crossing detection method and circuit |
| CN203101495U (en) * | 2012-12-30 | 2013-07-31 | 青岛东软载波科技股份有限公司 | A zero-crossing detecting circuit |
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2012
- 2012-12-30 CN CN201210584484XA patent/CN103063904A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102012455A (en) * | 2010-11-03 | 2011-04-13 | 苏州合欣美电子科技有限公司 | Zero-crossing detection circuit |
| CN201955387U (en) * | 2011-02-22 | 2011-08-31 | 武汉盛帆电子股份有限公司 | Zero-crossing detecting circuit with low power consumption for carrier wave communication |
| CN102662898A (en) * | 2012-04-06 | 2012-09-12 | 华为技术有限公司 | Host-slave compatibility method, device and system for USB (universal serial bus) device |
| CN102662104A (en) * | 2012-04-18 | 2012-09-12 | 华为技术有限公司 | Zero-crossing detection method and circuit |
| CN203101495U (en) * | 2012-12-30 | 2013-07-31 | 青岛东软载波科技股份有限公司 | A zero-crossing detecting circuit |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015139456A1 (en) * | 2014-03-18 | 2015-09-24 | 瑞斯康微电子（深圳）有限公司 | Zero-cross detection circuit for mains supply |
| CN103995176A (en) * | 2014-05-16 | 2014-08-20 | 南京能瑞自动化设备股份有限公司 | Zero-crossing signal generating method based on signal of coupling coil |
| CN105891589A (en) * | 2016-05-26 | 2016-08-24 | 宁波三星医疗电气股份有限公司 | Zero crossing detection circuit for power lines and manufacturing method of zero crossing detection circuit |
| CN105891589B (en) * | 2016-05-26 | 2018-12-25 | 宁波三星医疗电气股份有限公司 | A kind of zero cross detection circuit and preparation method thereof for power line |
| CN107425834A (en) * | 2017-06-26 | 2017-12-01 | 青岛东软载波科技股份有限公司 | Power line zero crossing modulation circuit |
| CN107425834B (en) * | 2017-06-26 | 2023-07-07 | 青岛东软载波科技股份有限公司 | Power line zero-crossing modulation circuit |
| CN108400799A (en) * | 2018-04-18 | 2018-08-14 | 深圳市全智芯科技有限公司 | A kind of method of novel unlatching wireless pairing |
| CN108400799B (en) * | 2018-04-18 | 2024-02-13 | 深圳市全智芯科技有限公司 | Novel method for starting wireless pairing |
| CN110244172A (en) * | 2018-12-28 | 2019-09-17 | 国网浙江长兴县供电有限公司 | A kind of zero firewire detection system of family table inlet wire and method |
| CN111413538A (en) * | 2020-03-31 | 2020-07-14 | 西安许继电力电子技术有限公司 | Detection circuit and detection method for bridge-free topology current zero-crossing point at wireless charging receiving side |
| CN112616218A (en) * | 2020-12-21 | 2021-04-06 | 广东思万奇科技有限公司 | Interference elimination method and device for dimmable LED lamp |
| CN113054968A (en) * | 2021-03-05 | 2021-06-29 | 苏州海鹏科技有限公司 | Optical coupler driving circuit with common-mode interference resistance |
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Application publication date: 20130424 |