WO2021217727A1 - 一种用于弱电控制强电的电气隔离电路 - Google Patents
一种用于弱电控制强电的电气隔离电路 Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/14—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
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- the utility model relates to an electrical isolation circuit used for weak current control strong current.
- the weak current control method is widely used in the strong current system, which promotes the improvement of safety in the operation of the strong current system, and it is more convenient in actual operation; the weak current control technology in the existing technology is in progress.
- phase interference will occur, which may easily cause faults such as grounding.
- An electrical isolation circuit for weak current control to strong current is provided to solve the above-mentioned problems.
- An electrical isolation circuit for weak current control and strong current is used to include: a power supply protection output module, a modulation isolation module, and a filter switch module.
- the modulation isolation module includes: photoelectric isolator U3, amplifier U2, integrated circuit U4, resistor R5, resistor R6, diode D3, resistor R7, transistor Q4, polar capacitor C5, resistor R8, capacitor C6, resistor R9, resistor R10, resistor R11, capacitor C7, capacitor C8, capacitor C9, capacitor C10; wherein, the pin 4 of the amplifier U2 is simultaneously connected to one end of the polar capacitor C5 and the photoelectric isolator The No. 1 pin of U3 is connected, the No. 1 pin of the amplifier U2 is connected to one end of the resistor R5 and one end of the resistor R6 at the same time, and the No.
- the 7th pin of the opto-isolator U3 is simultaneously connected to one end of the capacitor C6 and the One end of the resistor R9 is connected, the No. 7 pin of the integrated circuit U4 is connected to the other end of the capacitor C6, the No. 2 pin of the integrated circuit U4 is connected to one end of the resistor R10, and the integrated circuit U4 Pin No. 1 is simultaneously connected to one end of the capacitor C7, the other end of the resistor R10 and the No. 3 pin of the amplifier U3, and the No. 5 pin of the integrated circuit U4 is connected to one end of the capacitor C8 ,
- the No. 14 pin of the integrated circuit U4 is connected to one end of the capacitor C9, and the No. 3 and No.
- the 4 pins of the integrated circuit U4 are respectively connected to the other end of the resistor R1 and the capacitor C10. One end is connected, the emitter of the transistor Q4 is simultaneously connected to the other end of the resistor R7, the other end of the resistor R9, the other end of the capacitor C7, the other end of the capacitor C8, and the other end of the capacitor C9. One end and the other end of the capacitor C10 are connected and grounded; the modulation isolation module is used to effectively eliminate the demodulated signal generated when the circuit is working by using the photoelectric isolator when the weak point is controlled by the strong current, without reducing Working performance, while the integrated circuit U4 can control the working time of the circuit, so that when multiple circuits work, they can be better electrically isolated.
- the filter switch module includes: an integrated circuit U1, a resistor R1, a resistor R2, a resistor R3, a transistor Q1, a Zener diode D1, a resistor R4, a transistor Q2, a capacitor C3, a capacitor C2, a transistor Q3, The inductor 1, the diode D2, and the polar capacitor C4; wherein the No. 4 pin of the integrated circuit U1 is connected to one end of the resistor R1, and the No. 2 and No. 5 pins of the integrated circuit U1 are connected to all the terminals at the same time. One end of the capacitor C1, the other end of the resistor R1 and one end of the resistor R2 are connected, and the No.
- the emitter of the transistor Q3 is simultaneously connected to one end of the inductor L1 and the negative electrode of the diode D2, and the pin 8 of the integrated circuit U1 is simultaneously connected to one end of the resistor R3 and the resistor R2.
- the other end, the other end of the capacitor C2, and the collector of the transistor Q3 are connected, and the No.
- the 6 pin of the integrated circuit U1 is simultaneously connected to the collector of the transistor Q1, the other end of the resistor R3, and the The emitter of the transistor Q2, the anode of the diode D2 and one end of the polar capacitor C4 are connected, and the other end of the resistor R4 is simultaneously connected to the other end of the polar capacitor C4 and the other end of the inductor L1 And output; the filter switch module performs dynamic balance of voltage output to ensure voltage stability, and the output voltage is stable within a set voltage value, thereby protecting working equipment and circuit components.
- the power protection output module includes: a transformer TR1, a rectifier bridge BR1, a capacitor C15, a diode D5, a diode D6, a capacitor C13, a capacitor C14, a resistor R13, a controllable precision voltage regulator source D4, and a transistor Q6 , Capacitor C11, resistor R12, field effect transistor Q5, varistor VR1, capacitor C12, resistor R14; wherein the input end of the rectifier bridge BR1 is simultaneously connected to the output end of the transformer TR1 and one end of the capacitor C15
- the input end of the transformer TR1 is connected to the power supply, the positive output end of the rectifier bridge BR1 is simultaneously connected to one end of the capacitor C14, the positive electrode of the diode D5, and one end of the capacitor C13, and the negative electrode of the diode D5 At the same time, it is connected to the other end of the capacitor C15 and the anode of the diode D6, and the cathode of the dio
- the other end of the electricity R13 is simultaneously connected to the cathode of the controllable precision voltage stabilizing source D4, the gate of the field effect transistor Q5 and the collector of the transistor Q6, and the base of the transistor Q6 is simultaneously connected Connected to the drain of the field effect transistor Q5 and one end of the resistor R12, and the emitter of the transistor Q6 is connected to the other end of the resistor R12, one end of the varistor VR1 and the capacitor C12 at the same time. One end is connected and output.
- the negative output end of the rectifier bridge BR1 is simultaneously connected to the other end of the capacitor C14, the anode of the controllable precision voltage stabilizing source D4 and one end of the capacitor C11.
- the reference electrode of the voltage source D4 is simultaneously connected to the other end of the capacitor C11, the other end of the varistor VR1 and one end of the resistor R14, and the other end of the resistor R14 is connected to the other end of the capacitor C12 And output;
- the power supply protection output module performs conversion of mains voltage input, performs rectification and stabilized output, and at the same time performs output voltage, can better divide the voltage, so as to protect the circuit for voltage supply.
- the model of the photoelectric isolator U3 is FPA108
- the model of the amplifier U2 is LM124
- the model of the integrated circuit U4 is NE567
- the model of the integrated circuit U1 is NE555
- the model of D4 is TL431.
- the utility model uses a modulation isolation module to control strong currents at weak points.
- the photoelectric isolator can effectively eliminate the demodulation signal generated when the circuit is working without reducing the working performance.
- the integrated circuit U4 can pass the control circuit Working time, so that when multiple circuits work, better electrical isolation;
- the power protection output module performs the conversion of the mains voltage input, rectifies and stabilizes the output, and at the same time, the output voltage can be better divided , So as to protect the circuit for voltage supply;
- the filter switch module performs dynamic balance of the voltage output to ensure that the voltage is stable, and the output voltage is stable within the set voltage value, thereby protecting the working equipment and circuit components; so the utility model can be used in When multiple circuits are working at the same time, the generated phase interference is eliminated, thereby reducing faults such as grounding.
- Figure 1 is a working circuit diagram of the utility model.
- FIG. 2 is a circuit diagram of the filter switch module of the present invention.
- FIG. 3 is a circuit diagram of the modulation isolation module of the present invention.
- FIG. 4 is a circuit diagram of the power supply protection output module of the present invention.
- An electrical isolation circuit used for weak current to control strong current including:
- Modulation isolation module includes: photoelectric isolator U3, amplifier U2, integrated circuit U4, resistor R5, resistor R6, diode D3, resistor R7, transistor Q4, polar capacitor C5, resistor R8, capacitor C6, resistor R9, resistor R10, resistor R11, capacitor C7, capacitor C8, capacitor C9, capacitor C10;
- the filter switch module includes: integrated circuit U1, resistor R1, resistor R2, resistor R3, transistor Q1, Zener diode D1, resistor R4, transistor Q2, capacitor C3, capacitor C2, transistor Q3, inductor 1, diode D2, polar capacitor C4;
- the power protection output module includes: transformer TR1, rectifier bridge BR1, capacitor C15, diode D5, diode D6, capacitor C13, capacitor C14, resistor R13, controllable precision voltage regulator source D4, transistor Q6, capacitor C11, resistor R12, field effect Tube Q5, varistor VR1, capacitor C12, resistor R14.
- the No. 4 pin of the integrated circuit U1 is connected to one end of the resistor R1, and the No. 2 and No. 5 pins of the integrated circuit U1 are connected to one end of the capacitor C1 at the same time.
- the other end of the resistor R1 is connected to one end of the resistor R2
- the No. 1 pin of the integrated circuit U1 is simultaneously connected to the other end of the capacitor C1 and the emitter of the transistor Q1, and the base of the transistor Q1
- the electrode is connected to the anode of the Zener diode D1
- the cathode of the Zener diode D1 is connected to one end of the resistor R4
- the No. 3 and No. 7 pins of the integrated circuit U1 are connected to the transistor Q2.
- the base is connected.
- the collector of the transistor Q2 is connected to one end of the capacitor C3, and the base of the transistor Q3 is connected to one end of the capacitor C2 and the other end of the capacitor C3 at the same time.
- the emitter is connected to one end of the inductor L1 and the negative electrode of the diode D2 at the same time, and the pin 8 of the integrated circuit U1 is connected to one end of the resistor R3, the other end of the resistor R2, and the capacitor C2 at the same time.
- the other end of the transistor Q3 is connected to the collector of the transistor Q3, and the No.
- 6 pin of the integrated circuit U1 is simultaneously connected to the collector of the transistor Q1, the other end of the resistor R3, the emitter of the transistor Q2, and the
- the anode of the diode D2 is connected to one end of the polar capacitor C4, and the other end of the resistor R4 is simultaneously connected to the other end of the polar capacitor C4 and the other end of the inductor L1 for output.
- the No. 4 pin of the amplifier U2 is simultaneously connected to one end of the polar capacitor C5 and the No. 1 pin of the opto-isolator U3, and the No. 1 pin of the amplifier U2 is simultaneously connected to the One end of the resistor R5 is connected to one end of the resistor R6, the No. 2 pin of the amplifier U2 is simultaneously connected to the anode of the diode D3, the season of Q4, one end of the resistor R5, the One end of the resistor R6 is connected to one end of the resistor R7, the No. 11 pin of the amplifier U2 is connected to the cathode of the diode D3 and the other end of the resistor R7 at the same time, the No.
- 1 pin of the integrated circuit U4 is connected to one end of the capacitor C7 and the resistor R10 at the same time.
- the other end is connected to the No. 3 pin of the amplifier U3, the No. 5 pin of the integrated circuit U4 is connected to one end of the capacitor C8, and the No. 14 pin of the integrated circuit U4 is connected to one end of the capacitor C9 ,
- the input end of the rectifier bridge BR1 is simultaneously connected to the output end of the transformer TR1 and one end of the capacitor C15, the input end of the transformer TR1 is connected to a power source, and the positive output of the rectifier bridge BR1 is The terminal is simultaneously connected to one end of the capacitor C14, the anode of the diode D5, and one end of the capacitor C13, the cathode of the diode D5 is simultaneously connected to the other end of the capacitor C15 and the anode of the diode D6, so The cathode of the diode D6 is simultaneously connected to the other end of the capacitor C13, one end of the resistor R13, and the source of the field effect transistor Q5, and the other end of the electricity R13 is simultaneously connected to the controllable precision voltage regulator source
- the cathode of D4, the gate of the field effect tube Q5 and the collector of the transistor Q6 are connected, and the base of the transistor Q6 is simultaneously connected to the drain of the field effect tube Q5 and one end of
- the other end of C14, the anode of the controllable precision voltage stabilization source D4 and one end of the capacitor C11 are connected, and the reference electrode of the controllable precision voltage stabilization source D4 is simultaneously connected to the other end of the capacitor C11 and the voltage
- the other end of the sensitive resistor VR1 is connected to one end of the resistor R14, and the other end of the resistor R14 is connected to the other end of the capacitor C12 and outputs.
- Field effect transistor Q5 cooperates with capacitor C12 for filtering output; when the output voltage drops, the voltage at one end of resistor R13 drops, thereby controlling the precision voltage regulator source D4
- the cathode voltage rises, so that the voltage at the other end of the varistor VR1 rises, so as to perform a regulated output; thus the voltage is electrically isolated through the modulation isolation module, and the voltage input is input through the photoelectric isolator U3 and fed through the resistor R8
- Transistor Q4 supplies power, while amplifier U2 inputs the operating voltage, amplifies the voltage signal value through operation, and divides the output through pin 1 of amplifier U2.
- the base of transistor Q4 is energized and the voltage signal is input.
- the transistor The emitter Q4 of Q1 conducts conduction output.
- integrated circuit U4 cooperates with resistor R11 and capacitor C10 to form a voltage controlled oscillation circuit, which can adjust the circuit frequency output, capacitor C8 and capacitor C9 for circuit filtering and decoupling, capacitor C6 and resistor R9 Parallel to eliminate the spike voltage, so as to protect the circuit work; when multiple circuits are working at the same time, the filter switch module is used to eliminate the generated interference, and the voltage is divided by the resistor R2 and the resistor R3.
- the set of the transistor Q1 The electrode is energized, so that the base of the transistor Q1 is energized, and the voltage-stabilizing crisis sense D1 has a large impedance at this time, and the resistance R4 forms a loop, so that the emitter of the transistor Q1 outputs voltage, the transistor Q1 is turned on, and the integrated circuit U1 is reset.
- the integrated circuit U1 cooperates with the capacitor C2 and the capacitor C3 to form an oscillating circuit.
- the transistor Q2 and the transistor Q3 perform output inductance. When multiple circuits are working, the output can be effectively limited and the input and output can be controlled.
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Abstract
一种用于弱电控制强电的电气隔离电路，包括：电源保护输出模块、调制隔离模块以及滤波开关模块；光电隔离器可以有效地消除电路工作时产生的解调信号，同时又不降低工作性能，从而多个电路工作时，可以更好地电气隔离；电源保护输出模块进行市电电压输入的转换，进行整流稳压输出，同时在进行输出电压的同时，可以更好地进行分压；滤波开关模块进行电压输出的动态平衡，保证电压稳定，且输出的电压稳定在设定的电压值内，从而保护工作设备与电路元器件。
Description
本实用新型涉及一种用于弱电控制强电的电气隔离电路。
随着我国电气自动化控制技术发展速度的不断加快，在电气生产过程中的各个领域都开始广泛应用弱电控制强电的控制方法，但是由于弱电具有的控制技术简单且操作方便，因此在电气自动化控制及多个领域都应用广泛，同时在操作过程中其安全性比较高。
现阶段，强电系统中开始广泛应用弱电控制方式，促使安全性在强电系统运行中有所提升，在实际操作中也更加便捷；现有技术中的弱电控制强电技术，在进行多个电路同时工作时，会产生相会干扰，容易造成接地等故障。
提供一种用于弱电控制强电的电气隔离电路，解决上述提到的问题。
一种用于弱电控制强电的电气隔离电路用于，包括：电源保护输出模块、调制隔离模块、以及滤波开关模块。
在进一步的实施例中，所述调制隔离模块包括：光电隔离器U3、放大器U2、集成电路U4、电阻R5、电阻R6、二极管D3、电阻R7、三极管Q4、极性电容C5、电阻R8、电容C6、电阻R9、电阻R10、电阻R11、电容C7、电容C8、电容C9、电容C10；其中，所述放大器U2的4号引脚同时与所述极性电容C5的一端和所述光电隔离器U3的1号引脚连接，所述放大器U2的1号引脚同时与所述电阻R5的一端和所述电阻R6的一端连接，所述放大器U2的2号引脚同时与所述二极管D3的正极、所十三结果Q4的季节、所述电阻R5的一端、所述电阻R6的一端和所述电阻R7的一端连接，所述放大器U2的11号引脚同时与所述二极管D3的负极和所述电阻R7的另一端连接，所述光电隔离器U3的2号引脚与所述电阻R8的一端连接，所述三极管Q4的集电极与所述电阻R8的另一端连接，所述光电隔离器U3的8号引脚同时与所述电阻R11的一端和所述集成电路U6的6号引脚连接，所述光电隔离器U3的7号引脚同时与所述电容C6的一端和所述电阻R9的一端连接，所述集成电路U4的7号引脚与所述电容C6的另一端连接，所述集成电路U4的2号引脚与所述电阻R10的一端连接，所述集成电路U4的1号引脚同时与所述电容C7的一端、所述电阻R10的另一端和所放大器U3的3号引脚连接，所述集成电路U4的5号引脚与所述电容C8的一端连接，所述集成电路U4的14号引脚与所述电容C9的一端连接，所述集成电路U4的3号引脚、4号引脚分别与所述电阻R1的另一端和所述电容C10的一端连接，所述三极管Q4的发射极同时与所述电阻R7的另一端、所述电阻R9的另一端、所述电容C7的另一端、所述电容C8的另一端、所述电容C9的另一端、所述电容C10的另一端连接且接地；所述调制隔离模块用于在进行弱点控制强电时，利用光电隔离器可以有效的消除电路工作时，产生的解调信号，同时又不降低工作性能，同时集成电路U4可以通过控制电路工作时间，从而多个电路工作时，可以更好的电气隔离。
在进一步的实施例中，所述滤波开关模块包括：集成电路U1、电阻R1、电阻R2、电阻R3、三极管Q1、稳压二极管D1、电阻R4、三极管Q2、电容C3、电容C2、三极管Q3、电感1、二极管D2、极性电容C4；其中，所述集成电路U1的4号引脚与所述电阻R1的一端连接，所述集成电路U1的2号引脚、5号引脚同时与所述电容C1的一端、所述电阻R1的另一端和所述电阻R2的一端连接，所述集成电路U1的1号引脚同时与所述电容C1的另一端和所述三极管Q1的发射极连接，所述三极管Q1的基极与所述稳压二极管D1的正极连接，所述稳压二极管D1的负极与所述电阻R4的一端连接，所述集成电路U1的3号引脚、7号引脚与所述三极管Q2的基极连接，所述三极管Q2的集电极与所述电容C3的一端连接，所述三极管Q3的基极同时与所述电容C2的一端和所述电容C3的另一端连接，所述三极管Q3的发射极同时与所述电感L1的一端和所述二极管D2的负极连接，所述集成电路U1的8号引脚同时与所述电阻R3的一端、所述电阻R2的另一端、所述电容C2的另一端和所述三极管Q3的集电极连接，所述集成电路U1的6号引脚同时与所述三极管Q1的集电极、所述电阻R3的另一端、所述三极管Q2的发射极、所述二极管D2的正极和所述极性电容C4的一端连接，所述电阻R4的另一端同时与所述极性电容C4的另一端和所述电感L1的另一端连接且输出；所述滤波开关模块进行电压输出的动态平衡，保证电压稳定，且输出的电压稳定在设定的电压值内，从而保护工作设备与电路元器件。
在进一步的实施例中，所述电源保护输出模块包括：变压器TR1、整流桥BR1、电容C15、二极管D5、二极管D6、电容C13、电容C14、电阻R13、可控精密稳压源D4、三极管Q6、电容C11、电阻R12、场效应管Q5、压敏电阻VR1、电容C12、电阻R14；其中，所述整流桥BR1的输入端同时与所述变压器TR1的输出端和所述电容C15的一端连接，所述变压器TR1的输入端接电源，所述整流桥BR1的正极输出端同时与所述电容C14的一端、所述二极管D5的正极、所述电容C13的一端连接，所述二极管D5的负极同时与所述电容C15的另一端和所述二极管D6的正极连接，所述二极管D6的负极同时与所述电容C13的另一端、所述电阻R13的一端和所述场效应管Q5的源极连接，所述电R13的另一端同时与所述可控精密稳压源D4的阴极、所述场效应管Q5的栅极和所述三极管Q6的集电极连接，所述三极管Q6的基极同时与所述场效应管Q5的漏极和所述电阻R12的一端连接，所述三极管Q6的发射极同时与所述电阻R12的另一端、所述压敏电阻VR1的一端和所述电容C12的一端连接且输出，所述整流桥BR1的负极输出端同时与所述电容C14的另一端、所述可控精密稳压源D4的阳极和所述电容C11的一端连接，所述可控精密稳压源D4的参考极同时与所述电容C11的另一端、所述压敏电阻VR1的另一端和所述电阻R14的一端连接，所述电阻R14的另一端与所述电容C12的另一端连接且输出；所述电源保护输出模块进行市电电压输入的转换，进行整流稳压输出，同时在进行输出电压的同时，可以更好的进行分压，从而保护电路进行电压供给。
在进一步的实施例中，所述光电隔离器U3的型号为FPA108，所述放大器U2的型号为LM124，所述集成电路U4的型号为NE567；所述集成电路U1的型号为NE555；所述可控精密稳压源D4的型号为TL431。
本实用新型通过调制隔离模块用于在进行弱点控制强电时，利用光电隔离器可以有效的消除电路工作时，产生的解调信号，同时又不降低工作性能，同时集成电路U4可以通过控制电路工作时间，从而多个电路工作时，可以更好的电气隔离；电源保护输出模块进行市电电压输入的转换，进行整流稳压输出，同时在进行输出电压的同时，可以更好的进行分压，从而保护电路进行电压供给；滤波开关模块进行电压输出的动态平衡，保证电压稳定，且输出的电压稳定在设定的电压值内，从而保护工作设备与电路元器件；从而本实用新型可以在进行多个电路同时工作时，消除产生的相会干扰，从而减少造成接地等故障。
图1是本实用新型的工作电路图。
图2是本实用新型的滤波开关模块电路图。
图3是本实用新型的调制隔离模块电路图。
图4是本实用新型的电源保护输出模块电路图。
在下文的描述中，给出了大量具体的细节以便提供对本实用新型更为彻底的理解。然而，对于本领域技术人员而言显而易见的是，本实用新型可以无需一个或多个这些细节而得以实施；在其他的例子中，为了避免与本实用新型发生混淆，对于本领域公知的一些技术特征未进行描述。
一种用于弱电控制强电的电气隔离电路，包括：
调制隔离模块包括：光电隔离器U3、放大器U2、集成电路U4、电阻R5、电阻R6、二极管D3、电阻R7、三极管Q4、极性电容C5、电阻R8、电容C6、电阻R9、电阻R10、电阻R11、电容C7、电容C8、电容C9、电容C10；
滤波开关模块包括：集成电路U1、电阻R1、电阻R2、电阻R3、三极管Q1、稳压二极管D1、电阻R4、三极管Q2、电容C3、电容C2、三极管Q3、电感1、二极管D2、极性电容C4；
电源保护输出模块包括：变压器TR1、整流桥BR1、电容C15、二极管D5、二极管D6、电容C13、电容C14、电阻R13、可控精密稳压源D4、三极管Q6、电容C11、电阻R12、场效应管Q5、压敏电阻VR1、电容C12、电阻R14。
如图二所示，所述集成电路U1的4号引脚与所述电阻R1的一端连接，所述集成电路U1的2号引脚、5号引脚同时与所述电容C1的一端、所述电阻R1的另一端和所述电阻R2的一端连接，所述集成电路U1的1号引脚同时与所述电容C1的另一端和所述三极管Q1的发射极连接，所述三极管Q1的基极与所述稳压二极管D1的正极连接，所述稳压二极管D1的负极与所述电阻R4的一端连接，所述集成电路U1的3号引脚、7号引脚与所述三极管Q2的基极连接，所述三极管Q2的集电极与所述电容C3的一端连接，所述三极管Q3的基极同时与所述电容C2的一端和所述电容C3的另一端连接，所述三极管Q3的发射极同时与所述电感L1的一端和所述二极管D2的负极连接，所述集成电路U1的8号引脚同时与所述电阻R3的一端、所述电阻R2的另一端、所述电容C2的另一端和所述三极管Q3的集电极连接，所述集成电路U1的6号引脚同时与所述三极管Q1的集电极、所述电阻R3的另一端、所述三极管Q2的发射极、所述二极管D2的正极和所述极性电容C4的一端连接，所述电阻R4的另一端同时与所述极性电容C4的另一端和所述电感L1的另一端连接且输出。
如图三所示，所述放大器U2的4号引脚同时与所述极性电容C5的一端和所述光电隔离器U3的1号引脚连接，所述放大器U2的1号引脚同时与所述电阻R5的一端和所述电阻R6的一端连接，所述放大器U2的2号引脚同时与所述二极管D3的正极、所十三结果Q4的季节、所述电阻R5的一端、所述电阻R6的一端和所述电阻R7的一端连接，所述放大器U2的11号引脚同时与所述二极管D3的负极和所述电阻R7的另一端连接，所述光电隔离器U3的2号引脚与所述电阻R8的一端连接，所述三极管Q4的集电极与所述电阻R8的另一端连接，所述光电隔离器U3的8号引脚同时与所述电阻R11的一端和所述集成电路U6的6号引脚连接，所述光电隔离器U3的7号引脚同时与所述电容C6的一端和所述电阻R9的一端连接，所述集成电路U4的7号引脚与所述电容C6的另一端连接，所述集成电路U4的2号引脚与所述电阻R10的一端连接，所述集成电路U4的1号引脚同时与所述电容C7的一端、所述电阻R10的另一端和所放大器U3的3号引脚连接，所述集成电路U4的5号引脚与所述电容C8的一端连接，所述集成电路U4的14号引脚与所述电容C9的一端连接，所述集成电路U4的3号引脚、4号引脚分别与所述电阻R1的另一端和所述电容C10的一端连接，所述三极管Q4的发射极同时与所述电阻R7的另一端、所述电阻R9的另一端、所述电容C7的另一端、所述电容C8的另一端、所述电容C9的另一端、所述电容C10的另一端连接且接地。
如图四所示，所述整流桥BR1的输入端同时与所述变压器TR1的输出端和所述电容C15的一端连接，所述变压器TR1的输入端接电源，所述整流桥BR1的正极输出端同时与所述电容C14的一端、所述二极管D5的正极、所述电容C13的一端连接，所述二极管D5的负极同时与所述电容C15的另一端和所述二极管D6的正极连接，所述二极管D6的负极同时与所述电容C13的另一端、所述电阻R13的一端和所述场效应管Q5的源极连接，所述电R13的另一端同时与所述可控精密稳压源D4的阴极、所述场效应管Q5的栅极和所述三极管Q6的集电极连接，所述三极管Q6的基极同时与所述场效应管Q5的漏极和所述电阻R12的一端连接，所述三极管Q6的发射极同时与所述电阻R12的另一端、所述压敏电阻VR1的一端和所述电容C12的一端连接且输出，所述整流桥BR1的负极输出端同时与所述电容C14的另一端、所述可控精密稳压源D4的阳极和所述电容C11的一端连接，所述可控精密稳压源D4的参考极同时与所述电容C11的另一端、所述压敏电阻VR1的另一端和所述电阻R14的一端连接，所述电阻R14的另一端与所述电容C12的另一端连接且输出。
工作原理：当进行弱点控制强电时，市电输入220V/380V电压，通过电源保护输出模块进行转换电压输出，通过变压器TR1进行降压输出，发送至整流器BR1上，整流后的电压通过由二极管D5、二极管D6、电容C15和电容C13组成的陪压电路，输出陪压电压，电阻R14与压敏电阻VR1组成分压电路，电阻R13配合可控精密稳压源D4组成取样放大电路，将电压信号进行采集放大输出，同时电阻R2与三极管Q6组成限流保护电路，场效应管Q5配合电容C12进行滤波输出；当输出电压下降时，电阻R13的一端电压下降，从而可控精密稳压源D4的阴极电压升高，从而压敏电阻VR1的另一端电压升高，从而进行稳压输出；从而电压通过调制隔离模块进行电气隔离，电压输入，通过光电隔离器U3进行输入，通过电阻R8进给三极管Q4进行供电，同时放大器U2进行输入工作电压，通过进行运算放大电压信号值，并通过放大器U2的1号管脚进行分压输出，同时三极管Q4的基极得电并且输入电压信号，同时三极管Q1的发射极Q4进行导通输出，同时集成电路U4配合电阻R11与电容C10组成电压控制振荡电路，可以进行调节电路频率输出，电容C8与电容C9进行电路滤波和去耦，电容C6与电阻R9并联进行消除尖峰电压，从而保护电路工作；当进行多个电路同时工作时，通过滤波开关模块进行消除产生的相会干扰，电压通过电阻R2与电阻R3进行分压输出，此时三极管Q1的集电极得电，从而三极管Q1的基极得电，稳压危机感D1此时阻抗很大，配合电阻R4构成回路，从而三极管Q1的发射极输出电压，三极管Q1导通，从而集成电路U1进行复位，三极管Q1截止后，集成电路U1配合电容C2与电容C3组成振荡电路，三极管Q2与三极管Q3进行输出电感，当多个电路进行工作时，可以有效的限制输出和进行控制输入与输出，从而实现动态平衡，且二极管D2进行导通输出，电感L1配合极性电容C4进行增大感抗与滤波输出，从而使输出电压稳定在工作所需的电压值，从而消除产生的相会干扰。
以上结合附图详细描述了本实用新型的优选实施方式，但是，本实用新型并不限于上述实施方式中的具体细节，在本实用新型的技术构思范围内，可以对本实用新型的技术方案进行多种等同变换，这些等同变换均属于本实用新型的保护范围。
Claims (6)
- 一种用于弱电控制强电的电气隔离电路，其特征在于，包括：电源保护输出模块、调制隔离模块、以及滤波开关模块；其中，所述调制隔离模块包括：光电隔离器U3、放大器U2、集成电路U4、电阻R5、电阻R6、二极管D3、电阻R7、三极管Q4、极性电容C5、电阻R8、电容C6、电阻R9、电阻R10、电阻R11、电容C7、电容C8、电容C9、电容C10；其中，所述放大器U2的4号引脚同时与所述极性电容C5的一端和所述光电隔离器U3的1号引脚连接，所述放大器U2的1号引脚同时与所述电阻R5的一端和所述电阻R6的一端连接，所述放大器U2的2号引脚同时与所述二极管D3的正极、所十三结果Q4的季节、所述电阻R5的一端、所述电阻R6的一端和所述电阻R7的一端连接，所述放大器U2的11号引脚同时与所述二极管D3的负极和所述电阻R7的另一端连接，所述光电隔离器U3的2号引脚与所述电阻R8的一端连接，所述三极管Q4的集电极与所述电阻R8的另一端连接，所述光电隔离器U3的8号引脚同时与所述电阻R11的一端和所述集成电路U6的6号引脚连接，所述光电隔离器U3的7号引脚同时与所述电容C6的一端和所述电阻R9的一端连接，所述集成电路U4的7号引脚与所述电容C6的另一端连接，所述集成电路U4的2号引脚与所述电阻R10的一端连接，所述集成电路U4的1号引脚同时与所述电容C7的一端、所述电阻R10的另一端和所放大器U3的3号引脚连接，所述集成电路U4的5号引脚与所述电容C8的一端连接，所述集成电路U4的14号引脚与所述电容C9的一端连接，所述集成电路U4的3号引脚、4号引脚分别与所述电阻R1的另一端和所述电容C10的一端连接，所述三极管Q4的发射极同时与所述电阻R7的另一端、所述电阻R9的另一端、所述电容C7的另一端、所述电容C8的另一端、所述电容C9的另一端、所述电容C10的另一端连接且接地。
- 根据权利要求1所述一种用于弱电控制强电的电气隔离电路，其中特征在于，所述滤波开关模块包括：集成电路U1、电阻R1、电阻R2、电阻R3、三极管Q1、稳压二极管D1、电阻R4、三极管Q2、电容C3、电容C2、三极管Q3、电感1、二极管D2、极性电容C4；其中，所述集成电路U1的4号引脚与所述电阻R1的一端连接，所述集成电路U1的2号引脚、5号引脚同时与所述电容C1的一端、所述电阻R1的另一端和所述电阻R2的一端连接，所述集成电路U1的1号引脚同时与所述电容C1的另一端和所述三极管Q1的发射极连接，所述三极管Q1的基极与所述稳压二极管D1的正极连接，所述稳压二极管D1的负极与所述电阻R4的一端连接，所述集成电路U1的3号引脚、7号引脚与所述三极管Q2的基极连接，所述三极管Q2的集电极与所述电容C3的一端连接，所述三极管Q3的基极同时与所述电容C2的一端和所述电容C3的另一端连接，所述三极管Q3的发射极同时与所述电感L1的一端和所述二极管D2的负极连接，所述集成电路U1的8号引脚同时与所述电阻R3的一端、所述电阻R2的另一端、所述电容C2的另一端和所述三极管Q3的集电极连接，所述集成电路U1的6号引脚同时与所述三极管Q1的集电极、所述电阻R3的另一端、所述三极管Q2的发射极、所述二极管D2的正极和所述极性电容C4的一端连接，所述电阻R4的另一端同时与所述极性电容C4的另一端和所述电感L1的另一端连接且输出。
- 根据权利要求1所述一种用于弱电控制强电的电气隔离电路，其中特征在于，所述电源保护输出模块包括：变压器TR1、整流桥BR1、电容C15、二极管D5、二极管D6、电容C13、电容C14、电阻R13、可控精密稳压源D4、三极管Q6、电容C11、电阻R12、场效应管Q5、压敏电阻VR1、电容C12、电阻R14；其中，所述整流桥BR1的输入端同时与所述变压器TR1的输出端和所述电容C15的一端连接，所述变压器TR1的输入端接电源，所述整流桥BR1的正极输出端同时与所述电容C14的一端、所述二极管D5的正极、所述电容C13的一端连接，所述二极管D5的负极同时与所述电容C15的另一端和所述二极管D6的正极连接，所述二极管D6的负极同时与所述电容C13的另一端、所述电阻R13的一端和所述场效应管Q5的源极连接，所述电R13的另一端同时与所述可控精密稳压源D4的阴极、所述场效应管Q5的栅极和所述三极管Q6的集电极连接，所述三极管Q6的基极同时与所述场效应管Q5的漏极和所述电阻R12的一端连接，所述三极管Q6的发射极同时与所述电阻R12的另一端、所述压敏电阻VR1的一端和所述电容C12的一端连接且输出，所述整流桥BR1的负极输出端同时与所述电容C14的另一端、所述可控精密稳压源D4的阳极和所述电容C11的一端连接，所述可控精密稳压源D4的参考极同时与所述电容C11的另一端、所述压敏电阻VR1的另一端和所述电阻R14的一端连接，所述电阻R14的另一端与所述电容C12的另一端连接且输出。
- 根据权利要求1所述一种用于弱电控制强电的电气隔离电路，其中特征在于，所述光电隔离器U3的型号为FPA108，所述放大器U2的型号为LM124，所述集成电路U4的型号为NE567。
- 根据权利要求2所述一种用于弱电控制强电的电气隔离电路，其中特征在于，所述集成电路U1的型号为NE555。
- 根据权利要求3所述一种用于弱电控制强电的电气隔离电路，其中特征在于，所述可控精密稳压源D4的型号为TL431。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412356A (en) * | 1980-01-14 | 1983-10-25 | Iowa State University Research Foundation, Inc. | Light actuated remote control security system |
| CN202580240U (zh) * | 2012-05-09 | 2012-12-05 | 黄婷瑜 | 一种自动放水控制装置 |
| CN203776701U (zh) * | 2013-12-30 | 2014-08-20 | 湖南信息科学职业学院 | 一种基于红外检测的自动咖啡机控制电路 |
| CN205022530U (zh) * | 2015-10-18 | 2016-02-10 | 西安外事学院 | 一种小型汽车保护报警装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412356A (en) * | 1980-01-14 | 1983-10-25 | Iowa State University Research Foundation, Inc. | Light actuated remote control security system |
| CN202580240U (zh) * | 2012-05-09 | 2012-12-05 | 黄婷瑜 | 一种自动放水控制装置 |
| CN203776701U (zh) * | 2013-12-30 | 2014-08-20 | 湖南信息科学职业学院 | 一种基于红外检测的自动咖啡机控制电路 |
| CN205022530U (zh) * | 2015-10-18 | 2016-02-10 | 西安外事学院 | 一种小型汽车保护报警装置 |
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