CN102012455A - Zero-crossing detection circuit - Google Patents
Zero-crossing detection circuit Download PDFInfo
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- CN102012455A CN102012455A CN 201010530765 CN201010530765A CN102012455A CN 102012455 A CN102012455 A CN 102012455A CN 201010530765 CN201010530765 CN 201010530765 CN 201010530765 A CN201010530765 A CN 201010530765A CN 102012455 A CN102012455 A CN 102012455A
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Abstract
The invention discloses a zero-crossing detection circuit. In the zero-crossing detection circuit, the live wire of a municipal electric power network is connected with the first pin of a bridge rectifier circuit D, the null line of the municipal electric power network is connected with the third pin of the bridge rectifier circuit D; the second pin of the bridge rectifier circuit D is connected with one input end of an optical coupler IC1 through a resistor R1; the fourth pin of the bridge rectifier circuit D is connected with the other input end of the optical coupler IC1; one output end of the optical coupler IC1 is connected with an power supply, the other output end of the optical coupler IC1 is connected with the base of a triode Q1 through a resistor R2 and is earthed through a resistor R5; the collector of the triode Q1 is connected with the base of the triode Q1 through a resistor R3; and the collector of the triode Q1 is connected with a detection port P1.0. The invention has simple circuit structure and is convenient to use.
Description
Technical field
The present invention relates to a kind of application circuit, be specifically related to a kind of zero cross detection circuit.
Background technology
Zero cross detection circuit in the existing circuit is varied of a great variety, but most complex structure, the function complexity, and only need under the application scenario of function singleness at some, adopt the zero cross detection circuit of complicated circuit construction to finish single zero passage detection function often, cost can increase so on the one hand, in addition on the one hand, after circuit structure was in a single day complicated, its labile factor was behind so just reducing product percent of pass virtually also increasing.
Summary of the invention
For overcoming deficiency of the prior art, the object of the present invention is to provide a kind of zero cross detection circuit simple in structure.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of zero cross detection circuit, the zero line that the live wire of electricity network connects the described electricity network of first pin of a bridge rectifier circuit D connects the 3rd pin of described bridge rectifier circuit D, second pin of described bridge rectifier circuit D connects the input end of an optocoupler IC1 by a resistance R 1, the 4th pin of described bridge rectifier circuit D connects another input end of described optocoupler IC1, the output termination power of described optocoupler IC1, another output terminal of described optocoupler IC1 connects the base stage of triode Q1 and passes through resistance R 5 ground connection by a resistance R 2, the collector of described triode Q1 is by the base stage of a resistance R 3 connection triode Q1, and the collector of described triode Q1 meets detection port P1.0.
Further, cross-over connection has resistance R 4 and capacitor C 1 between two input ends of described optocoupler IC1.
Further, the grounded emitter of described triode Q2, collector connect power supply by resistance R 6, and cross-over connection has resistance R 7 and capacitor C 2 between the base stage of described triode Q2 and the emitter.
Further, the collector of described triode Q1 connects power supply by resistance R 8.
The course of work of zero cross detection circuit of the present invention is as follows:
When described live wire L and zero line N two ends input 220V civil power, through bridge rectifier circuit D rectification, pass through optocoupler IC1 this moment again, make optocoupler IC1 conducting, transmit signals to the base stage of triode Q1 after optocoupler IC1 conducting, signal is delivered to triode Q12 with this signal again through the processing of triode Q1, finally deliver to detection port P1.0 by the collector output of triode Q2, detection chip detects zero cross signal by this circuit.
The present invention has the following advantages:
Zero cross detection circuit of the present invention simple in structure, easy to use.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the circuit theory diagrams of zero cross detection circuit of the present invention.
Number in the figure explanation: 1, first pin, 2, second pin, the 3, the 3rd pin, the 4, the 4th pin.
Embodiment
Below in conjunction with drawings and Examples technology implementation process of the present invention is described further.
Referring to shown in Figure 1, a kind of zero cross detection circuit, the live wire of electricity network connects first pin 1 of a bridge rectifier circuit D, the zero line of described electricity network connects the 3rd pin 3 of described bridge rectifier circuit D, second pin 2 of described bridge rectifier circuit D connects the input end of an optocoupler IC1 by a resistance R 1, the 4th pin 4 of described bridge rectifier circuit D connects another input end of described optocoupler IC1, the output termination power of described optocoupler IC1, another output terminal of described optocoupler IC1 connects the base stage of triode Q1 and passes through resistance R 5 ground connection by a resistance R 2, the collector of described triode Q1 is by the base stage of a resistance R 3 connection triode Q1, and the collector of described triode Q1 meets detection port P1.0.
Further, cross-over connection has resistance R 4 and capacitor C 1 between two input ends of described optocoupler IC1.
Further, the grounded emitter of described triode Q2, collector connect power supply by resistance R 6, and cross-over connection has resistance R 7 and capacitor C 2 between the base stage of described triode Q2 and the emitter.
Further, the collector of described triode Q1 connects power supply by resistance R 8.
The foregoing description just is to allow the one of ordinary skilled in the art can understand content of the present invention and enforcement according to this for technical conceive of the present invention and characteristics being described, its objective is, can not limit protection scope of the present invention with this.The variation or the modification of every equivalence that the essence of content has been done according to the present invention all should be encompassed in protection scope of the present invention.
Claims (4)
1. zero cross detection circuit, it is characterized in that: the live wire of electricity network connects first pin (1) of a bridge rectifier circuit D, the zero line of described electricity network connects the 3rd pin (3) of described bridge rectifier circuit D, second pin (2) of described bridge rectifier circuit D connects the input end of an optocoupler IC1 by a resistance R 1, the 4th pin (4) of described bridge rectifier circuit D connects another input end of described optocoupler IC1, the output termination power of described optocoupler IC1, another output terminal of described optocoupler IC1 connects the base stage of triode Q1 and passes through resistance R 5 ground connection by a resistance R 2, the collector of described triode Q1 is by the base stage of a resistance R 3 connection triode Q1, and the collector of described triode Q1 meets detection port P1.0.
2. zero cross detection circuit according to claim 1 is characterized in that: cross-over connection has resistance R 4 and capacitor C 1 between two input ends of described optocoupler IC1.
3. zero cross detection circuit according to claim 1 is characterized in that: the grounded emitter of described triode Q2, collector connect power supply by resistance R 6, and cross-over connection has resistance R 7 and capacitor C 2 between the base stage of described triode Q2 and the emitter.
4. zero cross detection circuit according to claim 1 is characterized in that: the collector of described triode Q1 connects power supply by resistance R 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010530765 CN102012455A (en) | 2010-11-03 | 2010-11-03 | Zero-crossing detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010530765 CN102012455A (en) | 2010-11-03 | 2010-11-03 | Zero-crossing detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102012455A true CN102012455A (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010530765 Pending CN102012455A (en) | 2010-11-03 | 2010-11-03 | Zero-crossing detection circuit |
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| CN (1) | CN102012455A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508453A (en) * | 2011-11-08 | 2012-06-20 | 江苏斯菲尔电气股份有限公司 | AC and DC digital input circuit |
| CN102662104A (en) * | 2012-04-18 | 2012-09-12 | 华为技术有限公司 | Zero-crossing detection method and circuit |
| WO2013044602A1 (en) * | 2011-09-30 | 2013-04-04 | 海信科龙电器股份有限公司 | Zero-crossing signal detection circuit |
| CN103063904A (en) * | 2012-12-30 | 2013-04-24 | 青岛东软载波科技股份有限公司 | Zero cross detection circuit |
| CN104333364A (en) * | 2014-11-04 | 2015-02-04 | 许蓬 | AC solid state relay and fault detecting method of load circuit of same |
| CN106841762A (en) * | 2017-02-08 | 2017-06-13 | 广东美的厨房电器制造有限公司 | Zero cross detection circuit and home appliance |
| CN108832703A (en) * | 2018-06-14 | 2018-11-16 | 珠海格力电器股份有限公司 | Capacitor charging circuit, air conditioner and control method |
| CN110146736A (en) * | 2019-06-11 | 2019-08-20 | 珠海格力电器股份有限公司 | Power supply zero-crossing detection circuit, motor control circuit, power supply zero-crossing detection method and motor driving method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201110615Y (en) * | 2007-10-29 | 2008-09-03 | 珠海格力电器股份有限公司 | Zero-crossing signal detection circuit of air conditioner controller and air conditioner |
| CN201548660U (en) * | 2009-11-04 | 2010-08-11 | 南京因泰莱配电自动化设备有限公司 | High-voltage switch synchronous closing experiment device |
| CN201569698U (en) * | 2009-08-04 | 2010-09-01 | 海信科龙电器股份有限公司 | Zero-crossing signal detection device for air conditioner switching power supply |
| CN201926700U (en) * | 2010-11-03 | 2011-08-10 | 苏州合欣美电子科技有限公司 | Zero-crossing detection circuit |
-
2010
- 2010-11-03 CN CN 201010530765 patent/CN102012455A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201110615Y (en) * | 2007-10-29 | 2008-09-03 | 珠海格力电器股份有限公司 | Zero-crossing signal detection circuit of air conditioner controller and air conditioner |
| CN201569698U (en) * | 2009-08-04 | 2010-09-01 | 海信科龙电器股份有限公司 | Zero-crossing signal detection device for air conditioner switching power supply |
| CN201548660U (en) * | 2009-11-04 | 2010-08-11 | 南京因泰莱配电自动化设备有限公司 | High-voltage switch synchronous closing experiment device |
| CN201926700U (en) * | 2010-11-03 | 2011-08-10 | 苏州合欣美电子科技有限公司 | Zero-crossing detection circuit |
Non-Patent Citations (1)
| Title |
|---|
| 《微计算机信息》 20061231 韩正伟等 一种基于MSP430单片机的交流频率检测*** 第22卷, 第10-2期 2 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013044602A1 (en) * | 2011-09-30 | 2013-04-04 | 海信科龙电器股份有限公司 | Zero-crossing signal detection circuit |
| CN102508453A (en) * | 2011-11-08 | 2012-06-20 | 江苏斯菲尔电气股份有限公司 | AC and DC digital input circuit |
| CN102508453B (en) * | 2011-11-08 | 2013-10-09 | 江苏斯菲尔电气股份有限公司 | AC and DC digital input circuit |
| CN102662104A (en) * | 2012-04-18 | 2012-09-12 | 华为技术有限公司 | Zero-crossing detection method and circuit |
| CN102662104B (en) * | 2012-04-18 | 2015-06-17 | 华为技术有限公司 | Zero-crossing detection method and circuit |
| CN103063904A (en) * | 2012-12-30 | 2013-04-24 | 青岛东软载波科技股份有限公司 | Zero cross detection circuit |
| CN104333364A (en) * | 2014-11-04 | 2015-02-04 | 许蓬 | AC solid state relay and fault detecting method of load circuit of same |
| CN104333364B (en) * | 2014-11-04 | 2017-09-26 | 许蓬 | A kind of fault detection method of ac solid relay and the relay load circuit |
| CN106841762A (en) * | 2017-02-08 | 2017-06-13 | 广东美的厨房电器制造有限公司 | Zero cross detection circuit and home appliance |
| CN108832703A (en) * | 2018-06-14 | 2018-11-16 | 珠海格力电器股份有限公司 | Capacitor charging circuit, air conditioner and control method |
| CN110146736A (en) * | 2019-06-11 | 2019-08-20 | 珠海格力电器股份有限公司 | Power supply zero-crossing detection circuit, motor control circuit, power supply zero-crossing detection method and motor driving method |
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Application publication date: 20110413 |