WO2013044602A1 - Circuit de détection de signal de passage à zéro - Google Patents

Circuit de détection de signal de passage à zéro Download PDF

Info

Publication number
WO2013044602A1
WO2013044602A1 PCT/CN2012/070395 CN2012070395W WO2013044602A1 WO 2013044602 A1 WO2013044602 A1 WO 2013044602A1 CN 2012070395 W CN2012070395 W CN 2012070395W WO 2013044602 A1 WO2013044602 A1 WO 2013044602A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
zero
resistor
crossing signal
diode
Prior art date
Application number
PCT/CN2012/070395
Other languages
English (en)
Chinese (zh)
Inventor
张健能
袁兴建
鹿红伟
吴民安
李宗怀
曹永平
Original Assignee
海信科龙电器股份有限公司
广东科龙空调器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 海信科龙电器股份有限公司, 广东科龙空调器有限公司 filed Critical 海信科龙电器股份有限公司
Publication of WO2013044602A1 publication Critical patent/WO2013044602A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero

Definitions

  • the utility model belongs to the field of air conditioning detecting devices, and particularly relates to a zero-crossing signal detecting circuit.
  • the indoor unit cross flow fan generally uses a PG motor, and the PG
  • the driving of the motor is generally realized by the thyristor.
  • the commonly used thyristor in the air conditioning circuit belongs to the zero-crossing automatic shutdown type. The opening of the thyristor needs to input the current signal to the control pin, and the zero-crossing signal detection circuit is Input a current signal for the thyristor, find a reference point for its turn-on,
  • the zero-crossing signal circuit used in air conditioners is mainly based on resistor buck or power frequency transformer step-down sampling.
  • the resistor buck power consumption is large, while the power frequency transformer step-down requires a special transformer.
  • the power supply is not suitable.
  • the object of the present invention is to provide a zero-crossing signal detecting circuit with a simple structure and low power consumption of the circuit.
  • a zero-crossing signal detecting circuit comprises a zero-crossing signal detecting circuit, a signal converting circuit and a single-chip microcomputer which are sequentially connected, and the zero-crossing signal detecting circuit is further connected with a power frequency alternating current, and the zero-crossing signal detecting circuit comprises a resistor-capacitor step-down circuit and
  • the half-wave rectifying circuit includes a triode amplifying output circuit, and one end of the resistive-capacitor step-down circuit is connected with the power frequency alternating current, and the other end of the resistive-capacitor buck circuit is connected with the input end of the half-wave rectifying circuit, and the half-wave rectifying circuit is The output end is connected to the input end of the triode amplification output circuit, and the output end of the triode amplification output circuit is connected to the single chip as an output end of the zero-crossing signal.
  • the RC circuit includes a capacitor C1, a resistor R1 and a resistor R2, and one end of the capacitor C1 is connected to the power frequency AC, and the capacitor The other end of C1 is connected to one end of resistor R2, and the other end of resistor R2 is connected to the input of half-wave rectifier circuit, and resistor R1 is connected in parallel with capacitor C1.
  • the zero-crossing signal detecting circuit further includes a current limiting voltage dividing resistor, and an output end of the half-wave rectifying circuit is connected to an input end of the triode amplifying output circuit through a current limiting voltage dividing resistor.
  • the signal conversion circuit further includes an optocoupler communication circuit, and the input end of the triode amplification output circuit is connected to the current limiting voltage dividing resistor through the optocoupler communication circuit.
  • the optocoupler communication circuit includes an optocoupler B1 and a resistor R3.
  • the first end of the optocoupler B1 is connected to the current limiting resistor, and the optocoupler
  • the second end of the B1 is connected to the half-wave rectifying circuit
  • the third end of the optocoupler B1 is connected to the input end of the triode amplifier output circuit
  • the third end of the optocoupler B1 is also connected to the power ground through the resistor R3, the optocoupler B1
  • the fourth end is connected to the power source.
  • the power frequency alternating current is provided with a live line L and a neutral line N, and the fire L is connected to the resistor-capacitor step-down circuit, and the neutral line N Connected to a half-wave rectifier circuit.
  • the half-wave rectification circuit includes a diode V1, a diode V2, and a diode V3, and a fire line L
  • the anode of the diode V1 is also connected to the cathode of the diode V2 through the RC capacitor, and the cathode of the diode V1 is connected to the current limiting resistor, the neutral line N and the diode V2.
  • the anode is connected, the anode of diode V2 is also connected to the cathode of diode V3, and the anode of diode V3 is connected to the second end of optocoupler B1.
  • the triode amplification output circuit includes a triode V4, a resistor R4, a resistor R5, and a triode V4.
  • the base of the base is connected to the fourth end of the photocoupler B1 through the resistor R4, the emitter of the transistor V4 is connected to the power ground, and the collector of the transistor V4 is connected to the single chip as the output of the zero-crossing signal, the transistor V4 The collector is also connected to the power supply via resistor R5.
  • the utility model has the advantages of simple structure, reduces the power consumption of the circuit by using the resistance-resisting step-down circuit, has good energy saving effect and low cost.
  • Figure 1 is a schematic block diagram of the utility model
  • FIG. 2 is a circuit diagram of the present invention
  • Figure 3 is the zero-crossing signal output waveform of the present invention.
  • a zero-crossing signal detecting circuit comprises a power frequency alternating current and zero-crossing signal detecting circuit connected in sequence. , signal conversion circuit 2 , single chip 3 , zero - crossing signal detection circuit 1 including resistance-resistance step-down circuit 11 , half-wave rectifier circuit 12 and current limiting resistor 13 , signal conversion circuit 2
  • the transistor output circuit 21 and the optocoupler communication circuit 22 are included, and one end of the RC circuit 11 is connected to the power frequency AC, and the other end of the RC circuit 11 and the half wave rectification circuit 12
  • the input end is connected, the output end of the half-wave rectifying circuit 12 is connected to one end of the current limiting voltage dividing resistor 13, and the other end of the current limiting voltage dividing resistor 13 is connected to the input end of the optocoupler communication circuit 22, and the optocoupler communication circuit 22
  • the output terminal is connected to the input terminal of the transistor amplifying output circuit 21, and the output terminal of the triode amplifying output circuit 21 is connected
  • the power frequency AC power is set with the fire line L and the zero line N;
  • the RC circuit 11 includes a capacitor C1, a resistor R1 and a resistor R2;
  • the half-wave rectifier circuit 12 includes a diode V1, a diode V2, and a diode V3;
  • the optocoupler communication circuit 22 includes an optocoupler B1 and a third resistor R3.
  • the triode amplification output circuit 21 includes a triode V4, a resistor R4, and a resistor R5;
  • the capacitor C1 is connected to the power line L of the power frequency AC, and the other end of the capacitor C1 is connected to the resistor R2. Connected at one end, the other end of the resistor R2 is connected to the anode of the diode V1 of the half-wave rectifier circuit 12, and the resistor R1 is connected in parallel with the capacitor C1.
  • capacitor C1 is the capacitor step-down and resistor R1 is the capacitor. C1 discharge, resistor R2 prevents current surge.
  • the anode of the diode V1 is connected to the cathode of the diode V2, and the cathode of the diode V1 is connected to the current limiting resistor. 13 connection, diode V2 anode is connected to neutral line N, diode V2 anode is also connected to diode V3 cathode, diode V3 anode and optocoupler communication circuit 22 optocoupler B1 The second end of the connection.
  • the first end of the optocoupler B1 is connected to the current limiting voltage dividing resistor 13, and the second end of the optocoupler B1 and the half wave rectifying circuit
  • the anode of V3 is connected to the anode of V3.
  • the third end of the optocoupler B1 is connected to the transistor V4 through the resistor R4 of the triode amplifier output circuit 21.
  • the third end of the optocoupler B1 also passes through the resistor R3.
  • the fourth end of optocoupler B1 is connected to the power supply, which is +12 volts.
  • the base of the transistor V4 is connected to the fourth end of the photocoupler B1 through a resistor R4, and the transistor V4 The emitter is connected to the power ground.
  • the collector of the transistor V4 is connected to the microcontroller 3 as the output of the zero-crossing signal.
  • the collector of the transistor V4 is also connected to the power supply through the resistor R5.
  • the power supply is +5. Volt.
  • the current direction is as follows: L ⁇ C1 ⁇ R2 ⁇ V1 ⁇ 13 ⁇ B1 ⁇ V3 ⁇ N.
  • the optocoupler B1 is forwarded, and outputs a high level signal to the triode amplification output circuit 21, and the triode amplification output circuit 21 outputs a high level to the single chip microcomputer 3 .
  • the current direction is as follows: N ⁇ V2 ⁇ R2 ⁇ C1 ⁇ L.
  • Optocoupler B1 withstands the reverse voltage and does not conduct, outputs a low-level signal to the triode amplifier output circuit 21, and the triode amplifier output circuit 21 outputs a low level to the microcontroller 3 .
  • the power frequency AC waveform and the triode amplifier output circuit are tested for the actual use of the oscilloscope.
  • the waveform wherein the sine wave is a power frequency alternating current waveform, and the square wave is a waveform of the triode amplifying output circuit 21.
  • the voltage lags behind the current.
  • the detected zero-crossing signal is delayed by 5ms than the actual zero-crossing signal, and the high-level signal outputted to the MCU 3 is delayed by 5ms from the positive half cycle of the AC sine wave, and output to the MCU 3
  • the low level signal is delayed by 5ms from the negative half cycle of the AC sine wave.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

L'invention concerne un circuit de détection de signal de passage à zéro relevant du domaine des dispositifs de détection pour climatiseur, et comprend un circuit de détection de signal de passage à zéro (1), un circuit de conversion de signal (2) et une machine monopuce (3), qui sont connectés séquentiellement. Le circuit de détection de signal de passage à zéro (1) est en outre connecté à un courant alternatif à la fréquence du secteur. Le circuit de détection de signal de passage à zéro (1) comprend un circuit abaisseur à résistance-capacité (11) et un circuit redresseur demi-onde (12). Le circuit de conversion de signal (2) comprend un circuit de sortie amplificateur à triode (21). Une extrémité du circuit abaisseur à résistance-capacité (11) est connectée au courant alternatif à la fréquence du secteur. L'autre extrémité du circuit abaisseur à résistance-capacité (11) est connectée à une borne d'entrée du circuit redresseur demi-onde (12). Une borne de sortie du circuit redresseur demi-onde (12) est connectée à une borne d'entrée du circuit de sortie amplificateur à triode (21). Une borne de sortie du circuit de sortie amplificateur à triode (21) joue le rôle de borne de sortie de signaux de passage à zéro, et est connectée à la machine monopuce (3). Le circuit de détection présente une structure simple et présente une faible consommation.
PCT/CN2012/070395 2011-09-30 2012-01-16 Circuit de détection de signal de passage à zéro WO2013044602A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201120373379 CN202256476U (zh) 2011-09-30 2011-09-30 一种过零信号检测电路
CN201120373379.2 2011-09-30

Publications (1)

Publication Number Publication Date
WO2013044602A1 true WO2013044602A1 (fr) 2013-04-04

Family

ID=46117695

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/070395 WO2013044602A1 (fr) 2011-09-30 2012-01-16 Circuit de détection de signal de passage à zéro

Country Status (2)

Country Link
CN (1) CN202256476U (fr)
WO (1) WO2013044602A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103499732A (zh) * 2013-09-29 2014-01-08 湘潭大学 一种双向过零检测电路及其方法
CN103743940A (zh) * 2014-01-24 2014-04-23 镇江天力变压器有限公司 一种精准的高频除尘电源谐振电流的过零检测电路
CN107345989A (zh) * 2017-08-03 2017-11-14 合肥华耀电子工业有限公司 一种三相输入电源缺相检测电路
CN107425834A (zh) * 2017-06-26 2017-12-01 青岛东软载波科技股份有限公司 电力线过零点调制电路
CN108005942A (zh) * 2018-01-02 2018-05-08 成都前锋电子有限责任公司 一种燃气快速热水器交流风机控制系统
CN108279053A (zh) * 2018-01-26 2018-07-13 厦门拓宝科技有限公司 一种抗地线干扰的房车水箱水位检测装置
CN108988830A (zh) * 2018-08-03 2018-12-11 中国电子科技集团公司第二十四研究所 一种可编程边沿时间的脉冲信号发生电路
CN110043502A (zh) * 2019-05-28 2019-07-23 深圳市泛邦通用科技有限公司 吊扇及其控制器
CN110095737A (zh) * 2018-01-31 2019-08-06 上海安浦鸣志自动化设备有限公司 一种交流伺服驱动器控制电源掉电检测的电路及方法
CN114184830A (zh) * 2021-11-01 2022-03-15 杭州涂鸦信息技术有限公司 过零检测电路及电子设备
CN115407118A (zh) * 2022-09-03 2022-11-29 迈思普电子股份有限公司 一种隔离型输出方波的ac过零检测线路

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103683956A (zh) * 2013-12-23 2014-03-26 上海贝岭股份有限公司 低功耗电容型交流电压信号转换电路
CN107525961A (zh) * 2016-06-22 2017-12-29 南京理工大学 交流信号过零点检测装置
CN108872695B (zh) * 2018-07-04 2020-08-14 广东省测试分析研究所（中国广州分析测试中心） 双相过零信号检测电路及光纤信号传输系统
CN111736009A (zh) * 2020-07-21 2020-10-02 追创科技(苏州)有限公司 过零检测电路及电子设备

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004279278A (ja) * 2003-03-17 2004-10-07 Sharp Corp 電源装置
CN201110615Y (zh) * 2007-10-29 2008-09-03 珠海格力电器股份有限公司 空调控制器的过零信号检测电路及一种空调
CN201150035Y (zh) * 2007-12-29 2008-11-12 深圳和而泰智能控制股份有限公司 一种具有过零检测功能的阻容降压电源电路
CN101738535A (zh) * 2008-11-21 2010-06-16 上海电机学院 用于功率因数校正控制电路的交流电压过零检测电路
CN102012455A (zh) * 2010-11-03 2011-04-13 苏州合欣美电子科技有限公司 一种过零检测电路
CN102062810A (zh) * 2010-12-14 2011-05-18 江苏大学 一种交流电源过零点检测电路及检测方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004279278A (ja) * 2003-03-17 2004-10-07 Sharp Corp 電源装置
CN201110615Y (zh) * 2007-10-29 2008-09-03 珠海格力电器股份有限公司 空调控制器的过零信号检测电路及一种空调
CN201150035Y (zh) * 2007-12-29 2008-11-12 深圳和而泰智能控制股份有限公司 一种具有过零检测功能的阻容降压电源电路
CN101738535A (zh) * 2008-11-21 2010-06-16 上海电机学院 用于功率因数校正控制电路的交流电压过零检测电路
CN102012455A (zh) * 2010-11-03 2011-04-13 苏州合欣美电子科技有限公司 一种过零检测电路
CN102062810A (zh) * 2010-12-14 2011-05-18 江苏大学 一种交流电源过零点检测电路及检测方法

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103499732A (zh) * 2013-09-29 2014-01-08 湘潭大学 一种双向过零检测电路及其方法
CN103743940A (zh) * 2014-01-24 2014-04-23 镇江天力变压器有限公司 一种精准的高频除尘电源谐振电流的过零检测电路
CN107425834A (zh) * 2017-06-26 2017-12-01 青岛东软载波科技股份有限公司 电力线过零点调制电路
CN107425834B (zh) * 2017-06-26 2023-07-07 青岛东软载波科技股份有限公司 电力线过零点调制电路
CN107345989B (zh) * 2017-08-03 2023-05-23 合肥华耀电子工业有限公司 一种三相输入电源缺相检测电路
CN107345989A (zh) * 2017-08-03 2017-11-14 合肥华耀电子工业有限公司 一种三相输入电源缺相检测电路
CN108005942A (zh) * 2018-01-02 2018-05-08 成都前锋电子有限责任公司 一种燃气快速热水器交流风机控制系统
CN108005942B (zh) * 2018-01-02 2023-11-24 成都前锋电子有限责任公司 一种燃气快速热水器交流风机控制系统
CN108279053A (zh) * 2018-01-26 2018-07-13 厦门拓宝科技有限公司 一种抗地线干扰的房车水箱水位检测装置
CN108279053B (zh) * 2018-01-26 2024-04-12 厦门拓宝科技有限公司 一种抗地线干扰的房车水箱水位检测装置
CN110095737A (zh) * 2018-01-31 2019-08-06 上海安浦鸣志自动化设备有限公司 一种交流伺服驱动器控制电源掉电检测的电路及方法
CN108988830A (zh) * 2018-08-03 2018-12-11 中国电子科技集团公司第二十四研究所 一种可编程边沿时间的脉冲信号发生电路
CN110043502A (zh) * 2019-05-28 2019-07-23 深圳市泛邦通用科技有限公司 吊扇及其控制器
CN110043502B (zh) * 2019-05-28 2024-04-12 深圳市泛邦通用科技有限公司 吊扇及其控制器
CN114184830A (zh) * 2021-11-01 2022-03-15 杭州涂鸦信息技术有限公司 过零检测电路及电子设备
CN115407118A (zh) * 2022-09-03 2022-11-29 迈思普电子股份有限公司 一种隔离型输出方波的ac过零检测线路

Also Published As

Publication number Publication date
CN202256476U (zh) 2012-05-30

Similar Documents

Publication Publication Date Title
WO2013044602A1 (fr) Circuit de détection de signal de passage à zéro
US9837928B1 (en) Single fire-wire phase-front dynamic AC power fetching module
CN201110615Y (zh) 空调控制器的过零信号检测电路及一种空调
CN104896687B (zh) 空调器、室外机及其供电通信控制系统
CN104864564B (zh) 空调器、室外机及其供电通信控制系统
CN202077009U (zh) 一种可控硅的隔离触发电路
CN110417251A (zh) Pfc电路及空调器
CN104007709B (zh) 一种电器设备及其控制装置和控制方法
CN104110763B (zh) 一种空调器室内机及其交流过电压检测装置
CN202309510U (zh) 无桥pfc系统的采样装置
CN201867443U (zh) 一种家用电器及其市电强电信号检测电路
CN110133359B (zh) 空调器过零检测电路、电控装置和空调器
CN103973134A (zh) 直流电源装置及提高其功率因数的pwm脉冲控制方法
CN208127984U (zh) 一种太阳能一体化路灯摄像头系统
CN111856116A (zh) 一种无桥pfc电流采样电路及其应用
CN202395655U (zh) 一种无桥pfc系统的采样装置
CN104633849A (zh) 基于物联网技术的空调节能控制装置
CN108110732A (zh) 交流风机驱动装置及空调器
CN209930126U (zh) 驱动控制电路和家电设备
CN212364406U (zh) 一种半周期交流电流采样电路
CN104990197B (zh) 空调器、室外机及其供电控制系统
CN108599601B (zh) 同步变压器实现隔离式无源自驱光耦三相同步整流电路及其方法
CN204886375U (zh) 一种风机控制器的电源电路
CN204719579U (zh) 电子式交流稳压器控制电路
CN204923262U (zh) 温差发电的变频空调器

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12835574

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12835574

Country of ref document: EP

Kind code of ref document: A1