CN102033156A - Zero-crossing detection circuit of ecological house - Google Patents
Zero-crossing detection circuit of ecological house Download PDFInfo
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- CN102033156A CN102033156A CN 201010540881 CN201010540881A CN102033156A CN 102033156 A CN102033156 A CN 102033156A CN 201010540881 CN201010540881 CN 201010540881 CN 201010540881 A CN201010540881 A CN 201010540881A CN 102033156 A CN102033156 A CN 102033156A
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- triode
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Abstract
The invention relates to a zero-crossing detection circuit of an ecological house, which is formed by connecting two diodes (D1 and D2), four resistors (from R1 to R4), a triode Q and a capacitor C. Since the circuit has repeated breakover and cut-off effects on signals, an output section waveform is formed so that a CPU (Central Processing Unit) judges the zero joint according to the waveform.
Description
Technical field
The present invention relates to circuit field, particularly a kind of zero cross detection circuit of ecological room.
Background technology
Ecological room design of Controller theory is that imitation meets human body more a good life, rest environment arise at the historic moment technology-imitation natural ecological environments such as application message electronics, the effect that can play beauty treatment, skin care, takes care of health.Be integrated into a control system with these more existing practical techniques and realize that total system is divided three modules: air-conditioning control module, central controll block, human-computer interaction module, realize mutually by communication modes between three control modules between the information transmission.
But the zero cross detection circuit that always lacks so far, a kind of not only simple but also effective ecological room.
Summary of the invention
The present invention provides a kind of zero cross detection circuit of simple and effective ecological room in order to overcome the deficiency of above technology.
The present invention realizes by following measure:
The zero cross detection circuit in a kind of ecological room of the present invention is formed by connecting by two diodes (D1, D2), four resistance (R1-R4), a triode Q, a capacitor C:
A end signal input port connects the positive pole of diode D1, and B end signal input port connects the positive pole of diode D2, and the negative pole of diode D1 links to each other with the negative pole of diode D2, and simultaneously, the negative pole of diode D1 links to each other with the base stage of triode Q with resistance R 2 series connection backs,
Be connected across after resistance R 3 and the capacitor C parallel connection between the base stage and emitter of triode Q, and between the emitter of the negative pole of diode D1 and triode Q also cross-over connection resistance R 1 is arranged, simultaneously, the grounded emitter of triode Q,
The collector of triode Q connects and draws resistance R 4, and the current collection of triode Q signal output part C very.
The invention has the beneficial effects as follows: to the conducting repeatedly of signal, by effect, form the deferent segment waveform by this circuit, CPU judges zero point by this waveform.
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 preferred embodiment of the present invention and conjunction with figs. describes 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 schematic diagram of zero cross detection circuit of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is made specific description.
The zero cross detection circuit in a kind of ecological room of the present invention is formed by connecting by two diodes (D1, D2), four resistance (R1-R4), a triode Q, a capacitor C:
A end signal input port connects the positive pole of diode D1, and B end signal input port connects the positive pole of diode D2, and the negative pole of diode D1 links to each other with the negative pole of diode D2, and simultaneously, the negative pole of diode D1 links to each other with the base stage of triode Q with resistance R 2 series connection backs,
Be connected across after resistance R 3 and the capacitor C parallel connection between the base stage and emitter of triode Q, and go back cross-over connection between the emitter of the negative pole of diode D1 and triode Q resistance R 1 is arranged, simultaneously, the grounded emitter of triode Q, the collector of triode Q connects and draws resistance R 4, and the current collection of triode Q signal output part C very.
The physical circuit of the zero cross detection circuit in ecological room of the present invention is described below:
Diode D1 and D2 voltage are taken from transformer time utmost point A, B 2 points, form Rectified alternating current through diode D1 and D2 full-wave rectification, through capacitor filtering, leach the waveform that HFS forms triode Q1 base stage behind the electric resistance partial pressure, when base voltage during greater than 0.7V, triode Q1 conducting, current collection is low level very, otherwise, when base voltage during less than 0.7V, Q2 ends, and current collection is high level very.Conducting so repeatedly, by just forming the deferent segment waveform, CPU judges zero point by this waveform.
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 (1)
1. the zero cross detection circuit in an ecological room is characterized in that, is formed by connecting by two diodes (D1, D2), four resistance (R1-R4), a triode Q, a capacitor C:
A end signal input port connects the positive pole of diode D1, and B end signal input port connects the positive pole of diode D2, and the negative pole of diode D1 links to each other with the negative pole of diode D2, and simultaneously, the negative pole of diode D1 links to each other with the base stage of triode Q with resistance R 2 series connection backs,
Be connected across after resistance R 3 and the capacitor C parallel connection between the base stage and emitter of triode Q, and between the emitter of the negative pole of diode D1 and triode Q also cross-over connection resistance R 1 is arranged, simultaneously, the grounded emitter of triode Q,
The collector of triode Q connects and draws resistance R 4, and the current collection of triode Q signal output part C very.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010540881 CN102033156A (en) | 2010-11-11 | 2010-11-11 | Zero-crossing detection circuit of ecological house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010540881 CN102033156A (en) | 2010-11-11 | 2010-11-11 | Zero-crossing detection circuit of ecological house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102033156A true CN102033156A (en) | 2011-04-27 |
Family
ID=43886314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010540881 Pending CN102033156A (en) | 2010-11-11 | 2010-11-11 | Zero-crossing detection circuit of ecological house |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102033156A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115453187A (en) * | 2022-09-14 | 2022-12-09 | 联桥科技有限公司 | Non-isolated alternating voltage zero-crossing detection circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864700Y (en) * | 2005-11-01 | 2007-01-31 | 海信集团有限公司 | Zero-cross detecting circuit and refrigerator employing same |
| 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 |
| CN101738535A (en) * | 2008-11-21 | 2010-06-16 | 上海电机学院 | Alternating voltage zero-crossing detection circuit for power factor correction control circuit |
| CN201926701U (en) * | 2010-11-11 | 2011-08-10 | 苏州合欣美电子科技有限公司 | Zero crossing detection circuit of ecological house |
-
2010
- 2010-11-11 CN CN 201010540881 patent/CN102033156A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864700Y (en) * | 2005-11-01 | 2007-01-31 | 海信集团有限公司 | Zero-cross detecting circuit and refrigerator employing same |
| 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 |
| CN101738535A (en) * | 2008-11-21 | 2010-06-16 | 上海电机学院 | Alternating voltage zero-crossing detection circuit for power factor correction control circuit |
| CN201926701U (en) * | 2010-11-11 | 2011-08-10 | 苏州合欣美电子科技有限公司 | Zero crossing detection circuit of ecological house |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115453187A (en) * | 2022-09-14 | 2022-12-09 | 联桥科技有限公司 | Non-isolated alternating voltage zero-crossing detection circuit |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110427 |