WO2017152366A1 - 一种用于风力发电机的采用光电计数的转速监测系统 - Google Patents

一种用于风力发电机的采用光电计数的转速监测系统 Download PDF

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WO2017152366A1
WO2017152366A1 PCT/CN2016/075888 CN2016075888W WO2017152366A1 WO 2017152366 A1 WO2017152366 A1 WO 2017152366A1 CN 2016075888 W CN2016075888 W CN 2016075888W WO 2017152366 A1 WO2017152366 A1 WO 2017152366A1
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resistor
operational amplifier
grounded
speed monitoring
monitoring system
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PCT/CN2016/075888
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English (en)
French (fr)
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马翼
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马翼
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Priority to PCT/CN2016/075888 priority Critical patent/WO2017152366A1/zh
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • the invention relates to a rotational speed monitoring system for photoelectric generators using photoelectric counting.
  • wind turbines are built in areas with abundant wind resources. Wind energy works on the blades and drives generators to generate electricity. During the rotation of the blades, real-time monitoring of the rotational speed is required to adjust the relevant parameters of the blades and improve the high performance of the wind power generation. At present, the measurement of the speed of the wind turbine is measured by the speed sensor, but because the electronic sensor is susceptible to electromagnetic interference during the working process, the reliability of the data acquisition is affected, and the reliability of the monitoring is lowered.
  • the technical problem to be solved by the present invention is that in order to overcome the deficiencies of the poor reliability of the monitoring capability of the prior art, a rotational speed monitoring system for photoelectric generators using photoelectric counting with high reliability of rotational speed monitoring is provided.
  • a rotation speed monitoring system for photoelectric generator using photoelectric counting comprising a rotating shaft, a plurality of blades and a fuselage, wherein the rotating shaft is disposed on one side of the fuselage
  • the fan blades are evenly distributed on the outer circumference of the rotating shaft, and the rotating blades are provided with rotating speed monitoring devices on both sides thereof.
  • the rotating speed monitoring device includes a transmitting mechanism and a receiving mechanism, and the transmitting mechanism and the receiving mechanism are located on both sides of the wind blade.
  • the receiving mechanism is disposed on the body;
  • the speed monitoring device is provided with a wireless communication module and a photoelectric counting module, and the photoelectric counting module includes a photoelectric technology circuit, and the photoelectric technology circuit includes a transformer, a rectifier bridge, a voltage regulator transistor, a first operational amplifier, and a second operational amplifier.
  • the output side of the transformer is connected to the input side of the rectifier bridge, one end of the output side of the rectifier bridge is grounded, and the other end of the output side of the rectifier bridge is connected to the input end of the voltage regulator transistor, and the input end of the voltage regulator transistor passes through
  • the first capacitor is grounded, the grounding end of the stabilizing transistor is grounded, the output end of the stabilizing transistor is grounded through a second capacitor, and the output end of the stabilizing transistor is grounded through a series circuit composed of a first resistor and an LED.
  • the cathode of the light-emitting diode is grounded, the output end of the voltage-stabilizing transistor is connected to the collector of the photo-transistor through a second resistor, the emitter of the photo-transistor is grounded, and the inverting input end of the first operational amplifier is photosensitive a collector connection of the triode, an inverting input terminal of the first operational amplifier is connected to an output end of the voltage stabilizing transistor through a fifth resistor, a non-inverting input terminal of the first operational amplifier is grounded, and an output of the first operational amplifier The terminal is connected to the inverting input terminal of the second operational amplifier, and the inverting input terminal of the second operational amplifier is passed through the sixth resistor An output terminal of the Zener diode is connected, and a non-inverting input terminal of the second operational amplifier is connected to an output end of the Zener diode through a series circuit of a third resistor and a fourth resistor, and the non-inverting input terminal of the second operational amplifier is grounded
  • the models of the first operational amplifier and the second operational amplifier are both LM393.
  • the triode is an NPN triode.
  • the type of the optocoupler is 4N35.
  • the transmitting mechanism is an infrared emitting head.
  • the receiving mechanism comprises an infrared receiver.
  • the invention has the beneficial effects that the speed monitoring system for photoelectric generators using photoelectric counting
  • the time when the receiving mechanism receives the infrared rays is changed by the rotation of the blades, so that the rotation speed is monitored in real time, and the data is wirelessly transmitted through the wireless communication module, thereby ensuring the remote real-time monitoring of the speed of the wind turbine by the worker, thereby improving the system.
  • FIG. 1 is a schematic structural view of a rotational speed monitoring system for photoelectric generators using photoelectric counting according to the present invention
  • FIG. 2 is a circuit schematic diagram of an optoelectronic technology circuit for a wind power generator using a photoelectric counting speed monitoring system of the present invention
  • a rotational speed monitoring system for a wind power generator using photoelectric counting includes a rotating shaft 3, a plurality of blades 2 and a fuselage 5, and the rotating shaft 3 is disposed on one side of the fuselage 5,
  • the blades 2 are evenly distributed in the axial direction on the outer circumference of the rotating shaft 3, and the rotating blades 2 are provided with rotation speed monitoring devices on both sides thereof.
  • the measuring device comprises a transmitting mechanism 1 and a receiving mechanism 4, the transmitting mechanism 1 and the receiving mechanism 4 are located on two sides of the blade 2, and the receiving mechanism 4 is disposed on the body 5;
  • the speed monitoring device is provided with a wireless communication module and a photoelectric counting module.
  • the photoelectric counting module includes a photoelectric technology circuit, and the photoelectric technology circuit includes a transformer T1, a rectifier bridge BR1, a voltage regulator transistor U1, and a first operational amplifier U2.
  • the second operational amplifier U3, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7, the eighth resistor R8, and the ninth resistor R9 The tenth resistor R10, the eleventh resistor R11, the first capacitor C1, the second capacitor C2, the light emitting diode D1, the phototransistor Q1, the transistor Q2 and the optocoupler N1, the output side of the transformer T1 and the input side of the rectifier bridge BR1 Connected, one end of the output side of the rectifier bridge BR1 is grounded, and the other end of the output side of the rectifier bridge BR1 is connected to the input end of the Zener diode U1, and the input end of the Zener diode U1 is grounded through the first capacitor C1.
  • the ground terminal of the Zener U1 is grounded, the output of the Zener U1 is grounded through a second capacitor C2, and the output of the Zener U1 is connected in series through the first resistor R1 and the LED D1.
  • the circuit is grounded, the cathode of the LED D1 is grounded, the output end of the Zener diode U1 is connected to the collector of the phototransistor Q1 through a second resistor R2, and the emitter of the phototransistor Q1 is grounded, the first operation
  • the inverting input terminal of the amplifier U2 is connected to the collector of the phototransistor Q1, and the inverting input terminal of the first operational amplifier U2 is connected to the output terminal of the Zener diode U1 through a fifth resistor R5, the first operational amplifier U2
  • the non-inverting input is grounded, the output of the first operational amplifier U2 is connected to the inverting input of the second operational amplifier U3, and the inverting input of the second operational amplifier U3 is passed through the sixth resistor R6 and the
  • the second operational amplifier U3 is in phase.
  • the input terminal is grounded, the output end of the second operational amplifier U3 is connected to the second end of the optocoupler N1, and the first end of the optocoupler N1 passes through the seventh resistor R7 and the output end of the Zener diode U1. Connection, the light
  • the fourth end of the coupling N1 is connected to the output end of the Zener U1 through the eighth resistor R8.
  • the third end of the optocoupler N1 is grounded through the ninth resistor R9, and the third end of the optocoupler N1 passes through the tenth resistor.
  • R10 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is grounded, and the collector of the transistor Q2 is connected to the output terminal of the Zener U1 through the eleventh resistor R11.
  • the models of the first operational amplifier U2 and the second operational amplifier U3 are both LM393.
  • the transistor Q2 is an NPN transistor.
  • the type of the photocoupler N1 is 4N35.
  • the transmitting mechanism 1 is an infrared emitting head.
  • the receiving mechanism 4 comprises an infrared receiver.
  • the transmitting mechanism 1 emits stable infrared rays, and the receiving mechanism 4 can receive infrared rays.
  • the blades 2 rotate, the blades 2 continuously block the receiving.
  • the mechanism 4 receives the infrared rays emitted by the transmitting mechanism 1 to perform calculation, and wirelessly transmits the data through the wireless communication module, thereby ensuring the remote real-time monitoring of the rotational speed of the wind power generator by the worker, thereby improving the intelligence of the system.
  • the working principle of the photoelectric detecting circuit in the rotational speed monitoring device is: when the phototransistor Q1 receives the infrared light emitted by the light emitting diode D1, the phototransistor Q1 is turned on, and the inverting input terminal of the second operational amplifier U3 is at a low level.
  • the output terminal of the second operational amplifier U3 outputs a high level, and is applied to the inverting input terminal of the first operational amplifier U2, so that the output terminal of the first operational amplifier U2 outputs a low level, and the light-emitting tube in the photocoupler N1 is lit.
  • the corresponding photoconductive tube is turned on, the triode Q2 is also turned on, and the collector Q2 of the triode is outputted at a low level.
  • the circuit uses a conventional element The device not only ensures the reliability of the monitoring, but also reduces the production cost and improves the practical value of the monitoring system.
  • the speed monitoring system for photoelectric generators using photoelectric counting changes the time when the receiving mechanism 4 receives the infrared rays through the rotation of the blades 2, thereby real-time monitoring of the rotational speed and simultaneously data through the wireless communication module.
  • the wireless transmission ensures the remote real-time monitoring of the speed of the wind turbine by the staff, which improves the intelligence of the system.
  • the conventional components are used, which not only ensures the monitoring. The reliability, while reducing production costs, increases the practical value of the monitoring system.

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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
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  • Chemical & Material Sciences (AREA)
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Abstract

一种用于风力发电机的采用光电计数的转速监测系统，包括转轴(3)和若干风叶(2)，所述转轴(3)设置在机身(5)一侧，所述风叶(2)轴向均匀分布在转轴(3)外周，所述风叶(2)两侧设有转速监测装置，所述转速监测装置包括发射机构(1)和接收机构(4)，所述发射机构(1)和接收机构(4)位于风叶(2)的两侧，该用于风力发电机的采用光电计数的转速监测系统通过风叶(2)转动改变接收机构(4)接收到红外线的时间，从而对转速进行实时监控，同时通过无线通讯模块对数据无线传输，保证了工作人员对风力发电机的转速进行远程实时监控，提高了该系统的智能化；以及，在转速监测装置中光电检测电路中，采用了常规的元器件，不仅保证了监测的可靠性，同时还降低了生产成本，提高了监测系统的实用价值。

Description

一种用于风力发电机的采用光电计数的转速监测系统 技术领域
本发明涉及一种用于风力发电机的采用光电计数的转速监测系统。
背景技术
在我国，风力发电机都是建设在风力资源丰富的地区，风能对风叶做功，驱动发电机发电。在风叶旋转过程中，需要对转速进行实时监测，从而来调节风叶的相关参数，提高风力发电的高性能。目前，对于风力发电机的转速测量都是通过转速传感器进行测量，但是由于电子传感器在工作过程中，容易受到电磁干扰，从而影响了数据采集的可靠性，降低了监测的可靠性。
发明内容
本发明要解决的技术问题是：为了克服现有技术监测能力可靠性差的不足，提供一种转速监测可靠性高的用于风力发电机的采用光电计数的转速监测系统。
本发明解决其技术问题所采用的技术方案是：一种用于风力发电机的采用光电计数的转速监测系统，包括转轴、若干风叶和机身，所述转轴设置在机身一侧，所述风叶轴向均匀分布在转轴外周，所述风叶两侧设有转速监测装置，所述转速监测装置包括发射机构和接收机构，所述发射机构和接收机构位于风叶的两侧，所述接收机构设置在机身上；
所述转速监测装置中设有无线通讯模块和光电计数模块，所述光电计数模块包括光电技术电路，所述光电技术电路包括变压器、整流桥、稳压三极管、第一运算放大器、第二运算放大器、第一电阻、第二电阻、第三电阻、第四电阻、第五电阻、第六电阻、第七电阻、第八电阻、第九电阻、第十电阻、第十一电阻、第一电容、第二电容、发光二极管、光敏三极管、三极管和光耦，所 述变压器的输出侧与整流桥的输入侧连接，所述整流桥输出侧的一端接地，所述整流桥输出侧的另一端与稳压三极管的输入端连接，所述稳压三极管的输入端通过第一电容接地，所述稳压三极管的接地端接地，所述稳压三极管的输出端通过第二电容接地，所述稳压三极管的输出端通过第一电阻和发光二极管组成的串联电路接地，所述发光二极管的阴极接地，所述稳压三极管的输出端通过第二电阻与光敏三极管的集电极连接，所述光敏三极管的发射极接地，所述第一运算放大器的反相输入端与光敏三极管的集电极连接，所述第一运算放大器的反相输入端通过第五电阻与稳压三极管的输出端连接，所述第一运算放大器的同相输入端接地，所述第一运算放大器的输出端与第二运算放大器的反相输入端连接，所述第二运算放大器的反相输入端通过第六电阻与稳压三极管的输出端连接，所述第二运算放大器的同相输入端通过第三电阻和第四电阻组成的串联电路与稳压三极管的输出端连接，所述第二运算放大器的同相输入端接地，所述第二运算放大器输出端与光耦的第二端连接，所述光耦的第一端通过第七电阻与稳压三极管的输出端连接，所述光耦的第四端通过第八电阻与稳压三极管的输出端连接，所述光耦的第三端通过第九电阻接地，所述光耦的第三端通过第十电阻与三极管的基极连接，所述三极管的发射极接地，所述三极管的集电极通过第十一电阻与稳压三极管的输出端连接。
作为优选，所述第一运算放大器和第二运算放大器的型号均为LM393。
作为优选，所述三极管为NPN三极管。
作为优选，所述光耦的型号为4N35。
作为优选，所述发射机构为红外线发射头。
作为优选，所述接收机构包括红外线接收仪。
本发明的有益效果是，该用于风力发电机的采用光电计数的转速监测系统 通过风叶转动改变接收机构接收到红外线的时间，从而对转速进行实时监控，同时通过无线通讯模块对数据无线传输，保证了工作人员对风力发电机的转速进行远程实时监控，提高了该系统的智能化；不仅如此，在转速监测装置中光电检测电路中，采用了常规的元器件，不仅保证了监测的可靠性，同时还降低了生产成本，提高了监测系统的实用价值。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明用于风力发电机的采用光电计数的转速监测系统的结构示意图；
图2是本发明用于风力发电机的采用光电计数的转速监测系统的光电技术电路的电路原理图；
图中：1.发射机构，2.风叶，3.转轴，4.接收机构，5.机身，T1.变压器，BR1.整流桥，U1.稳压三极管，U2.第一运算放大器，U3.第二运算放大器，R1.第一电阻，R2.第二电阻，R3.第三电阻，R4.第四电阻，R5.第五电阻，R6.第六电阻，R7.第七电阻，R8.第八电阻，R9.第九电阻，R10.第十电阻，R11.第十一电阻，C1.第一电容，C2.第二电容，D1.发光二极管，Q1.光敏三极管，Q2.三极管，N1.光耦。
具体实施方式
现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。
如图1和图2所示，一种用于风力发电机的采用光电计数的转速监测系统，包括转轴3、若干风叶2和机身5，所述转轴3设置在机身5一侧，所述风叶2轴向均匀分布在转轴3外周，所述风叶2两侧设有转速监测装置，所述转速监 测装置包括发射机构1和接收机构4，所述发射机构1和接收机构4位于风叶2的两侧，所述接收机构4设置在机身5上；
所述转速监测装置中设有无线通讯模块和光电计数模块，所述光电计数模块包括光电技术电路，所述光电技术电路包括变压器T1、整流桥BR1、稳压三极管U1、第一运算放大器U2、第二运算放大器U3、第一电阻R1、第二电阻R2、第三电阻R3、第四电阻R4、第五电阻R5、第六电阻R6、第七电阻R7、第八电阻R8、第九电阻R9、第十电阻R10、第十一电阻R11、第一电容C1、第二电容C2、发光二极管D1、光敏三极管Q1、三极管Q2和光耦N1，所述变压器T1的输出侧与整流桥BR1的输入侧连接，所述整流桥BR1输出侧的一端接地，所述整流桥BR1输出侧的另一端与稳压三极管U1的输入端连接，所述稳压三极管U1的输入端通过第一电容C1接地，所述稳压三极管U1的接地端接地，所述稳压三极管U1的输出端通过第二电容C2接地，所述稳压三极管U1的输出端通过第一电阻R1和发光二极管D1组成的串联电路接地，所述发光二极管D1的阴极接地，所述稳压三极管U1的输出端通过第二电阻R2与光敏三极管Q1的集电极连接，所述光敏三极管Q1的发射极接地，所述第一运算放大器U2的反相输入端与光敏三极管Q1的集电极连接，所述第一运算放大器U2的反相输入端通过第五电阻R5与稳压三极管U1的输出端连接，所述第一运算放大器U2的同相输入端接地，所述第一运算放大器U2的输出端与第二运算放大器U3的反相输入端连接，所述第二运算放大器U3的反相输入端通过第六电阻R6与稳压三极管U1的输出端连接，所述第二运算放大器U3的同相输入端通过第三电阻R3和第四电阻R4组成的串联电路与稳压三极管U1的输出端连接，所述第二运算放大器U3的同相输入端接地，所述第二运算放大器U3输出端与光耦N1的第二端连接，所述光耦N1的第一端通过第七电阻R7与稳压三极管U1的输出端连接，所述光 耦N1的第四端通过第八电阻R8与稳压三极管U1的输出端连接，所述光耦N1的第三端通过第九电阻R9接地，所述光耦N1的第三端通过第十电阻R10与三极管Q2的基极连接，所述三极管Q2的发射极接地，所述三极管Q2的集电极通过第十一电阻R11与稳压三极管U1的输出端连接。
作为优选，所述第一运算放大器U2和第二运算放大器U3的型号均为LM393。
作为优选，所述三极管Q2为NPN三极管。
作为优选，所述光耦N1的型号为4N35。
作为优选，所述发射机构1为红外线发射头。
作为优选，所述接收机构4包括红外线接收仪。
该用于风力发电机的采用光电计数的转速监测系统中，发射机构1发出稳定的红外线，而接收机构4则能够接收到红外线，当风叶2转动时，风叶2就会不断的挡住接收机构4接收发射机构1发出的红外线，从而进行计算，再通过无线通讯模块对数据无线传输，保证了工作人员对风力发电机的转速进行远程实时监控，提高了该系统的智能化。
该转速监测装置中光电检测电路的工作原理是：当光敏三极管Q1接收到发光二极管D1射来的红外光线时，光敏三极管Q1导通，第二运算放大器U3的反相输入端为低电平，第二运算放大器U3的输出端输出高电平，加到第一运算放大器U2的反相输入端，使第一运算放大器U2的输出端输出低电平，则光耦N1内的发光管点亮，对应的光敏管导通，三极管Q2也导通，三极管Q2集电极输出低电平。当有物体通过发光二极管D1和光敏三极管Q1之间，红外线被挡住，光敏三极管Q1截止，第一运算放大器U2的输出端输出高电平，光耦N1截止，三极管Q2截止，三极管Q2集电极输出高电平，故当有物体通过光敏三极管Q1时，便在三极管Q2集电极上输出计数脉冲信号。其中，该电路采用了常规的元 器件，不仅保证了监测的可靠性，同时还降低了生产成本，提高了监测系统的实用价值。
与现有技术相比，该用于风力发电机的采用光电计数的转速监测系统通过风叶2转动改变接收机构4接收到红外线的时间，从而对转速进行实时监控，同时通过无线通讯模块对数据无线传输，保证了工作人员对风力发电机的转速进行远程实时监控，提高了该系统的智能化；不仅如此，在转速监测装置中光电检测电路中，采用了常规的元器件，不仅保证了监测的可靠性，同时还降低了生产成本，提高了监测系统的实用价值。
以上述依据本发明的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内，进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。

Claims (6)

  1. 一种用于风力发电机的采用光电计数的转速监测系统，其特征在于，包括转轴(3)、若干风叶(2)和机身(5)，所述转轴(3)设置在机身(5)一侧，所述风叶(2)轴向均匀分布在转轴(3)外周，所述风叶(2)两侧设有转速监测装置，所述转速监测装置包括发射机构(1)和接收机构(4)，所述发射机构(1)和接收机构(4)位于风叶(2)的两侧，所述接收机构(4)设置在机身(5)上；
    所述转速监测装置中设有无线通讯模块和光电计数模块，所述光电计数模块包括光电技术电路，所述光电技术电路包括变压器(T1)、整流桥(BR1)、稳压三极管(U1)、第一运算放大器(U2)、第二运算放大器(U3)、第一电阻(R1)、第二电阻(R2)、第三电阻(R3)、第四电阻(R4)、第五电阻(R5)、第六电阻(R6)、第七电阻(R7)、第八电阻(R8)、第九电阻(R9)、第十电阻(R10)、第十一电阻(R11)、第一电容(C1)、第二电容(C2)、发光二极管(D1)、光敏三极管(Q1)、三极管(Q2)和光耦(N1)，所述变压器(T1)的输出侧与整流桥(BR1)的输入侧连接，所述整流桥(BR1)输出侧的一端接地，所述整流桥(BR1)输出侧的另一端与稳压三极管(U1)的输入端连接，所述稳压三极管(U1)的输入端通过第一电容(C1)接地，所述稳压三极管(U1)的接地端接地，所述稳压三极管(U1)的输出端通过第二电容(C2)接地，所述稳压三极管(U1)的输出端通过第一电阻(R1)和发光二极管(D1)组成的串联电路接地，所述发光二极管(D1)的阴极接地，所述稳压三极管(U1)的输出端通过第二电阻(R2)与光敏三极管(Q1)的集电极连接，所述光敏三极管(Q1)的发射极接地，所述第一运算放大器(U2)的反相输入端与光敏三极管(Q1)的集电极连接，所述第一运算放大器(U2)的反相输入端通过第五电阻(R5)与稳压三极管(U1)的输出端连接，所述第一运算放大器(U2)的同相输入端接地，所述 第一运算放大器(U2)的输出端与第二运算放大器(U3)的反相输入端连接，所述第二运算放大器(U3)的反相输入端通过第六电阻(R6)与稳压三极管(U1)的输出端连接，所述第二运算放大器(U3)的同相输入端通过第三电阻(R3)和第四电阻(R4)组成的串联电路与稳压三极管(U1)的输出端连接，所述第二运算放大器(U3)的同相输入端接地，所述第二运算放大器(U3)输出端与光耦(N1)的第二端连接，所述光耦(N1)的第一端通过第七电阻(R7)与稳压三极管(U1)的输出端连接，所述光耦(N1)的第四端通过第八电阻(R8)与稳压三极管(U1)的输出端连接，所述光耦(N1)的第三端通过第九电阻(R9)接地，所述光耦(N1)的第三端通过第十电阻(R10)与三极管(Q2)的基极连接，所述三极管(Q2)的发射极接地，所述三极管(Q2)的集电极通过第十一电阻(R11)与稳压三极管(U1)的输出端连接。
  2. 如权利要求1所述的用于风力发电机的采用光电计数的转速监测系统，其特征在于，所述第一运算放大器(U2)和第二运算放大器(U3)的型号均为LM393。
  3. 如权利要求1所述的用于风力发电机的采用光电计数的转速监测系统，其特征在于，所述三极管(Q2)为NPN三极管。
  4. 如权利要求1所述的用于风力发电机的采用光电计数的转速监测系统，其特征在于，所述光耦(N1)的型号为4N35。
  5. 如权利要求1所述的用于风力发电机的采用光电计数的转速监测系统，其特征在于，所述发射机构(1)为红外线发射头。
  6. 如权利要求1所述的用于风力发电机的采用光电计数的转速监测系统，其特征在于，所述接收机构(4)包括红外线接收仪。
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