CN201955387U - Zero-crossing detecting circuit with low power consumption for carrier wave communication - Google Patents
Zero-crossing detecting circuit with low power consumption for carrier wave communication Download PDFInfo
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- CN201955387U CN201955387U CN2011200438696U CN201120043869U CN201955387U CN 201955387 U CN201955387 U CN 201955387U CN 2011200438696 U CN2011200438696 U CN 2011200438696U CN 201120043869 U CN201120043869 U CN 201120043869U CN 201955387 U CN201955387 U CN 201955387U
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Abstract
The utility model relates to a zero-crossing detecting circuit and provides a zero-crossing detecting circuit with low power consumption for carrier wave communication. The zero-crossing detecting circuit comprising a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C1, a capacitor C2, a diode D1, a diode D2, an NPN (Negative-Positive-Negative) type triode BG1, a PNP (Positive-Negative-Positive) triode BG2 and a photoelectric coupler OP1, wherein the terminal N of the zero-crossing detecting circuit with low power consumption for carrier wave communication is connected with a null line input and the terminal L of the same is connected with a live wire input. The power consumption of the zero-crossing detecting circuit in the utility model can be reduced to the half of that of the traditional zero-corssing detecting circuit by applying a half-wave rectification principle; an input circuit and an output circuit are electrically and completely insulated from each other and have strong anti-interference capability; the circuit precision is slightly influenced by temperature, voltage and discreteness of the photoelectric coupler, the zero-crossing detecting error is less than 60 microseconds and the precision is improved by one order of magnitude.
Description
Technical field
The utility model relates to a kind of zero cross detection circuit, particularly a kind of carrier communication low-power consumption zero cross detection circuit.
Background technology
Power line carrier, PLC technical development at present is rapid, and in order to realize the synchronism of carrier data transmission, the zero crossing detection accuracy of ac grid voltage seems even more important.It is too simple that zero cross detection circuit in the market has, and then reliability is low, poor anti jamming capability; What have is too complicated, and then cost is higher.
Summary of the invention,
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art part, and a kind of carrier communication low-power consumption zero cross detection circuit is provided, and its circuit structure is simple, and has low-power consumption, high precision, characteristics such as antijamming capability is strong.
The purpose of this utility model realizes by following technical measures: carrier communication low-power consumption zero cross detection circuit, comprise resistance R 1 ~ resistance R 8, capacitor C 1, capacitor C 2, diode D1, diode D2, NPN type triode BG1, positive-negative-positive triode BG2, photoelectrical coupler OP1, its described carrier communication is imported with the N termination zero line of low-power consumption zero cross detection circuit, the input of L termination live wire; L holds input end 1 pin that is connected to photoelectrical coupler OP1 through diode D1, resistance R 1, resistance R 2, diode D2, resistance R 3, and capacitor C 2 is connected in parallel on the two ends of resistance R 3; The positive pole of diode D1 meets L end, negative pole connecting resistance R1; L holds the base stage B that is connected to triode BG1 through diode D1, resistance R 4, resistance R 5, and the collector C of triode BG1 is connected to input end 2 pin of photoelectrical coupler OP1; The emitter E of triode BG1 is connected to the N end; Resistance R 6 one ends are connected the base stage B of triode BG1, and an end is connected the N end; Capacitor C 1 one ends are connected to the negative pole of diode D2, and an end is connected to the N end; Output terminal 4 pin of photoelectrical coupler OP1 are connected to operating voltage VCC; The emitter E of triode BG2 is connected to operating voltage VCC, and triode BG2 base stage B is connected to output terminal 3 pin of photoelectrical coupler OP1, and triode BG2 collector C is connected to the GND end through resistance R 8; Output terminal 3 pin of photoelectrical coupler OP1 are connected to the GND end through resistance R 7.
In technique scheme, described carrier communication is the P1 end with the output test side of low-power consumption zero cross detection circuit, and the P1 end links to each other with the collector C of triode BG2.
The utility model carrier communication is with the beneficial effect of low-power consumption zero cross detection circuit: 1. input circuit and output circuit are isolated on electric fully, and antijamming capability is strong; 2. using the half-wave rectification principle makes the power consumption of zero cross detection circuit be reduced to original half; 3. influenced by the discreteness of temperature, voltage, photoelectrical coupler less for the circuit precision, and the zero passage detection error is in 60 μ s, and precision improves an order of magnitude.
Description of drawings
Fig. 1 is the circuit connection diagram of the utility model carrier communication with the low-power consumption zero cross detection circuit.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of carrier communication low-power consumption zero cross detection circuit that present embodiment provides, comprise resistance R 1 ~ R8, capacitor C 1, C2, diode D1, D2, NPN type triode BG1, positive-negative-positive triode BG2, photoelectrical coupler OP1, its described carrier communication is imported with the N termination zero line of low-power consumption zero cross detection circuit, the input of L termination live wire; L holds input end 1 pin that is connected to photoelectrical coupler OP1 through diode D1, resistance R 1, R2, diode D2, resistance R 3, and capacitor C 2 is a speed-up capacitor, is connected in parallel on the two ends of resistance R 3; The positive pole of diode D1 meets L end, negative pole connecting resistance R1; L holds the base stage B that is connected to triode BG1 through diode D1, resistance R 4, resistance R 5, and the collector C of triode BG1 is connected to input end 2 pin of photoelectrical coupler OP1; The emitter E of triode BG1 is connected to the N end; Resistance R 6 one ends are connected the base stage B of triode BG1, and an end is connected the N end; Capacitor C 1 is a commutation capacitor, and an end is connected to the negative pole of diode D2, and an end is connected to the N end, and capacitor C 1 also has the effect of energy storage simultaneously; Output terminal 4 pin of photoelectrical coupler OP1 are connected to operating voltage VCC; The emitter E of triode BG2 is connected to operating voltage VCC, and triode BG2 base stage B is connected to output terminal 3 pin of photoelectrical coupler OP1, and triode BG2 collector C is connected to the GND end through resistance R 8; Output terminal 3 pin of photoelectrical coupler OP1 are connected to the GND end through resistance R 7.Described carrier communication is the P1 end with the output test side of low-power consumption zero cross detection circuit, and the P1 end links to each other with the collector C of triode BG2.
When alternating current is the positive half cycle of sine wave, diode D1 conducting, electric current is through live wire input end L place in circuit, and electric current one tunnel is connected to input end 1 pin of photoelectrical coupler OP1 through resistance R 1, R2, diode D2, resistance R 3; One the tunnel through resistance R 4, the R5 base stage B end to triode BG1, makes triode BG1 conducting, and input end 2 pin of photoelectrical coupler OP1 are connected to zero line input end N; Thereby make photoelectrical coupler OP1 conducting, this moment, triode BG2 ended, and output test side P1 is output as low level.When alternating current was the negative half period of sine wave, diode D1 ended, photoelectrical coupler OP1 input end no current, and triode BG2 conducting this moment, output test side P1 is output as high level.
In this embodiment circuit, because the existence of capacitor C 1, when alternating current was the positive half cycle of sine wave, diode D2 output end voltage generally maintained about 4V.Simultaneously, diode D2 has protective effect to circuit, capacitor C 1 discharge when preventing that alternating current from being sinusoidal wave negative half period.
This embodiment circuit application half-wave rectification principle makes the power consumption of zero cross detection circuit be reduced to original half, and input circuit and output circuit isolate on electric fully, and antijamming capability is stronger.
Speed-up capacitor C2 and triode BG1 have guaranteed the quick conducting of photoelectrical coupler OP1, in conjunction with triode BG2 the circuit error are reduced in the 60 μ s, and precision improves an order of magnitude.
Claims (2)
1. carrier communication low-power consumption zero cross detection circuit, comprise resistance R 1 ~ resistance R 8, capacitor C 1, capacitor C 2, diode D1, diode D2, NPN type triode BG1, positive-negative-positive triode BG2, photoelectrical coupler OP1, it is characterized in that: described carrier communication is imported with the N termination zero line of low-power consumption zero cross detection circuit, the input of L termination live wire; L holds input end 1 pin that is connected to photoelectrical coupler OP1 through diode D1, resistance R 1, resistance R 2, diode D2, resistance R 3, and capacitor C 2 is connected in parallel on the two ends of resistance R 3; L holds the base stage B that is connected to triode BG1 through diode D1, resistance R 4, resistance R 5, and the collector C of triode BG1 is connected to input end 2 pin of photoelectrical coupler OP1; The emitter E of triode BG1 is connected to the N end; Resistance R 6 one ends are connected the base stage B of triode BG1, and an end is connected the N end; Capacitor C 1 one ends are connected to the negative pole of diode D2, and an end is connected to the N end; Output terminal 4 pin of photoelectrical coupler OP1 are connected to operating voltage VCC; The emitter E of triode BG2 is connected to operating voltage VCC, and triode BG2 base stage B is connected to output terminal 3 pin of photoelectrical coupler OP1, and triode BG2 collector C is connected to the GND end through resistance R 8; Output terminal 3 pin of photoelectrical coupler OP1 are connected to the GND end through resistance R 7.
2. carrier communication low-power consumption zero cross detection circuit according to claim 1 is characterized in that: described carrier communication is the P1 end with the output test side of low-power consumption zero cross detection circuit, and the P1 end links to each other with the collector C of triode BG2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200438696U CN201955387U (en) | 2011-02-22 | 2011-02-22 | Zero-crossing detecting circuit with low power consumption for carrier wave communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200438696U CN201955387U (en) | 2011-02-22 | 2011-02-22 | Zero-crossing detecting circuit with low power consumption for carrier wave communication |
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| CN201955387U true CN201955387U (en) | 2011-08-31 |
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| CN2011200438696U Expired - Fee Related CN201955387U (en) | 2011-02-22 | 2011-02-22 | Zero-crossing detecting circuit with low power consumption for carrier wave communication |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323472A (en) * | 2011-09-08 | 2012-01-18 | 广州市金矢电子有限公司 | Voltage zero crossing detection device and zero crossing fling-cut switch |
| CN102508014A (en) * | 2011-12-09 | 2012-06-20 | 上海翊昊微电子有限公司 | Power line carrier communication zero-crossing detection system and method thereof |
| CN102520239A (en) * | 2012-01-05 | 2012-06-27 | 重庆市电力公司电力科学研究院 | Power consumption testing system for communication module of electricity information acquisition system |
| CN102662104A (en) * | 2012-04-18 | 2012-09-12 | 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 |
| CN102323472B (en) * | 2011-09-08 | 2016-12-14 | 广州市金矢电子有限公司 | Voltage zero-cross detection device and operating passing zero switch |
| CN107831357A (en) * | 2017-11-27 | 2018-03-23 | 深圳市锐钜科技有限公司 | Single-phase alternating current zero cross detection circuit and detection method based on light-coupled isolation |
| CN109061278A (en) * | 2018-06-19 | 2018-12-21 | 飞雕电器集团有限公司 | A kind of zero cross detection circuit of super low-power consumption |
| CN114252689A (en) * | 2021-12-08 | 2022-03-29 | 杭州联芯通半导体有限公司 | Zero-crossing detection circuit |
-
2011
- 2011-02-22 CN CN2011200438696U patent/CN201955387U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323472A (en) * | 2011-09-08 | 2012-01-18 | 广州市金矢电子有限公司 | Voltage zero crossing detection device and zero crossing fling-cut switch |
| CN102323472B (en) * | 2011-09-08 | 2016-12-14 | 广州市金矢电子有限公司 | Voltage zero-cross detection device and operating passing zero switch |
| CN102508014A (en) * | 2011-12-09 | 2012-06-20 | 上海翊昊微电子有限公司 | Power line carrier communication zero-crossing detection system and method thereof |
| CN102508014B (en) * | 2011-12-09 | 2013-11-27 | 上海翊昊微电子有限公司 | Power line carrier communication zero-crossing detection system and method thereof |
| CN102520239A (en) * | 2012-01-05 | 2012-06-27 | 重庆市电力公司电力科学研究院 | Power consumption testing system for communication module of electricity information acquisition system |
| 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 |
| CN107831357A (en) * | 2017-11-27 | 2018-03-23 | 深圳市锐钜科技有限公司 | Single-phase alternating current zero cross detection circuit and detection method based on light-coupled isolation |
| CN109061278A (en) * | 2018-06-19 | 2018-12-21 | 飞雕电器集团有限公司 | A kind of zero cross detection circuit of super low-power consumption |
| CN109061278B (en) * | 2018-06-19 | 2020-11-13 | 飞雕电器集团有限公司 | Zero-crossing detection circuit with ultralow power consumption |
| CN114252689A (en) * | 2021-12-08 | 2022-03-29 | 杭州联芯通半导体有限公司 | Zero-crossing detection circuit |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20190222 |