Fan fault feedback and speed regulation control integrated module

Abstract

The utility model belongs to the technical field of fan regulation and control, and particularly relates to a fan fault feedback and speed regulation control integrated module which comprises a main control module, a fan fault detection module, a fan speed regulation control module, an LED display control module, a communication circuit module, an address setting module and a multi-channel independent control circuit module. The fan speed regulation and fault feedback integrated module can independently regulate the speed and control fans, accurately detect fan faults and visually display the working state and system communication of each path of fan through a double-color LED, and is a 24-channel module integrating fan fault feedback, LED red and green double-color indication, PWM speed regulation and communication functions. And remote speed regulation and real-time accurate wind and rock fault monitoring can be easily realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan control technology field, concretely relates to a fan fault feedback and speed regulation control comprehensive module. BACKGROUND

[0002] The host computer issues an instruction to the PWM speed regulation box, and the speed regulation box outputs a PWM duty cycle to the corresponding channel fan according to the host computer instruction to realize speed regulation. Fan fault feedback: the LED indicator light plate judges whether the fan has a fault through the high and low level of each fan RD port, and if there is a 1-channel fan fault, the indicator light plate relay is disconnected, and a feedback signal is given to the host computer while the 1-channel fan LED is red.

[0003] In a multi-channel fan cooling system, fan fault detection, speed regulation control and state display are key to ensuring stable operation of the system. The traditional detection method is easily affected by line voltage drop, large current or signal interference, resulting in false fault reports. In addition, the existing technology is limited by I / O ports, cannot remotely control the speed of the fan in the multi-channel fan cooling system, cannot independently view the fan state, lacks an intuitive state display method, and it is difficult to quickly locate the faulty fan. Therefore, a circuit capable of realizing multi-channel independent speed control, accurately detecting faults and intuitively displaying the state and having communication function is needed. SUMMARY

[0004] The utility model provides a kind of fan fault feedback and speed regulation control comprehensive module, with can independently speed-regulated control fan, accurately detect fan fault, and the working state of each channel fan and system communication are directly displayed by bicolor LED.

[0005] The utility model provides the following technical scheme: a kind of fan fault feedback and speed regulation control comprehensive module, including main control module, fan fault detection module, fan speed regulation control module, LED display control module, communication circuit module, address setting module, multi-channel independent control circuit module;

[0006] The main control module includes fault signal input and output end; receive the signal of fan fault detection module, judge whether fan is faulty by MCU (micro control unit);According to the judgment result, output signal to communication protocol module, send fault code to PLC host computer by communication port, using 485 communication, communication protocol uses MODBUS protocol widely used in industrial control.

[0007] The fan fault detection module includes multi-channel feedback detection;For receiving the fault signal of multi-channel fan, and whether fan is faulty according to signal voltage;Clamp circuit is used to filter voltage fluctuation generated by line voltage drop or signal interference, to avoid false fault reports.

[0008] The fan speed control module comprises a multi-channel LED display circuit and a double-color LED lamp, which is used for intuitively displaying the working state of each fan and facilitating quick positioning of the faulty fan.

[0009] The LED display control module comprises a multi-channel LED display circuit and a double-color LED lamp, which is used for intuitively displaying the working state of each fan and facilitating quick positioning of the faulty fan; the MCU judges whether the fan is faulty according to the voltage signal input by the fault detection module, outputs a corresponding control signal to the corresponding channel, and controls the double-color LED lamp to display the fan state; when the fan is normal, the double-color LED lamp is green; when the fan is abnormal, the double-color LED lamp is red.

[0010] The communication circuit module is used for communication with the PLC host computer or the middle computer, and MODBUS protocol communication.

[0011] The address setting module supports 64-bit address setting, is used for cooperative control and feedback of multiple heat dissipation systems, and is used for multi-bit address setting.

[0012] The main control module further comprises a plurality of signal input pins and a signal output pin; the signal input pins receive signals from the fan fault detection module, the main control module judges whether the fan is faulty, and outputs signals to the communication module.

[0013] The fan fault detection module is connected with at least two fans, receives the fault signals of the fans, and outputs corresponding voltage signals according to the fault signals and the clamping circuit; the MCU controls the LED indicator lamp to display the working state of the fan.

[0014] The fan speed control module outputs a PWM control signal through the MCU, and independently controls the PWM speed of at least one or more fans; the clamping circuit clamps the high level that may be contacted by the PWM end, so as to avoid damaging the MCU.

[0015] The multi-channel independent control circuit module is connected with the main control module, is used for selecting the number of fans to be detected, and can individually close the channel that does not need to be detected.

[0016] The circuit of the fan fault detection module comprises resistors R107, R108, capacitors C93, C95, diodes D2 and D26; when the fan is normal, the fan feedback signal is grounded through the triode, a low-level signal is input to the MCU through the resistors R107, R108, capacitors C93, C95, diodes D2 and D26, the MCU outputs a signal to control the double-color LED FAN1 to be green, and when the fan is abnormal, the fan feedback signal is suspended, a high-level signal is input to the MCU through the resistors R107, R108, capacitors C93, C95, diodes D2 and D26, and the MCU outputs a signal to control the double-color LED FAN1 to be red.

[0017] The circuit of the fan speed control module comprises a communication control module U4, capacitors C92 and C91, resistors R102, R103 and R104, diodes TVS1, TVS2 and TVS3, an MCU U2.1 and a diode D50 and a resistor R173.

[0018] The circuit of the LED display control module comprises a diode LED1, a resistor R1, a switch SW1, an IC U3, capacitors C9 and C21.

[0019] The circuit of the communication circuit module comprises an IC U1, capacitors C92 and C91, resistors R102, R103 and R104, diodes TVS1, TVS2 and TVS3 and a terminal CN4.

[0020] The address setting module comprises an address setting circuit comprising an IC U1, a capacitor C10, an IC U5, a resistor R8 and a switch SW4.

[0021] The utility model discloses the beneficial effect is:

[0022] 1. High-precision detection: through the clamping circuit filter interference signal, avoid false alarm failure;

[0023] 2. Multi-speed control: through MCU to one position or multiple position fan output PWM speed control signal, realize fan PWM stepless speed control;

[0024] 3. Directly display: directly display each fan state through double-color LED lamp, facilitate fast positioning fault fan;

[0025] 4. Multi-path compatible: support multi-path fan detection and display, suitable for complex fan system;

[0026] 5. Communication function: adopt 485 communication, communication protocol adopts MODBUS protocol widely used in industrial control, realize remote real-time monitoring to multi-path fan working state;

[0027] 6. Energy saving and noise reduction, prolong fan life: through real-time monitoring of system, issue instruction through communication port to one or more position fan, control fan speed, when system temperature is low, control fan speed through PWM, or directly close fan, realize energy saving, reduce system noise, prolong fan life;

[0028] Fan speed fault feedback integrated module is 24-channel integrated fan fault feedback, LED red-green double-color indication, PWM speed regulation and communication function module, can easily realize remote speed regulation and real-time accurate fan fault monitoring.

[0029] The part not involved in the device is the same as the prior art or can be realized by using the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the multi-path fan fault detection, speed regulation control, LED display and communication control module of the utility model;

[0031] Figure 2 It is the multi-path fan fault detection circuit schematic diagram of the utility model;

[0032] Figure 3 It is the double-color LED display control circuit schematic diagram of the utility model;

[0033] Figure 4 It is the speed regulation control circuit schematic diagram of the utility model;

[0034] Figure 5 It is the address setting circuit schematic diagram of the utility model;

[0035] Figure 6 It is the communication control circuit schematic diagram of the utility model;

[0036] Figure 7 It is the multi-channel independent control circuit schematic diagram of the utility model;

[0037] Figure 8 It is the speed regulation module and fault feedback module schematic diagram in the utility model;

[0038] Figure 9 The control principle structure framework of the utility model; DETAILED DESCRIPTION

[0039] Please refer to Figures 1-9 The utility model provides the following technical scheme: a fan fault feedback and speed regulation control comprehensive module, including host computer module, fan fault detection module, fan speed regulation control module, LED display control module, communication circuit module, address setting module, multichannel independent control circuit module;

[0040] The host computer module includes fault signal input and output end, receives the signal of the fan fault detection module, judges whether the fan is faulty through MCU (micro control unit), outputs the signal to the communication protocol module according to the judgment result, sends the fault code to PLC host computer through the communication port, adopts 485 communication, and the communication protocol adopts MODBUS protocol widely used in industrial control.

[0041] The fan fault detection module includes multichannel feedback detection, is used to receive the fault signal of multichannel fan, and judges whether the fan is faulty according to signal voltage;Clamp circuit is used to filter the voltage fluctuation caused by line voltage drop or signal interference, to avoid false failure.

[0042] The fan speed regulation control module includes multichannel LED display circuit and double-color LED lamp, is used to directly show the working condition of each channel fan, and is convenient for quickly positioning fault fan.

[0043] The LED display control module includes multichannel LED display circuit and double-color LED lamp, is used to directly show the working condition of each channel fan, and is convenient for quickly positioning fault fan;MCU judges whether the fan is faulty through the voltage signal input of the fault detection module, outputs corresponding control signal to the corresponding channel, controls double-color LED lamp to show the fan state;When the fan is normal, double-color LED bright green light;When the fan is abnormal, double-color LED bright red light;

[0044] The communication circuit module is used for communication with PLC host computer or mid machine, and is used for MODBUS protocol communication.

[0045] The address setting module supports up to 64-bit address setting, is used for the collaborative control and feedback of multiple heat dissipation systems, and is used for multiple address setting.

[0046] The host computer module further includes multichannel signal input pin and a signal output pin, receives the signal of the fan fault detection module, judges whether the fan is faulty, and outputs the signal to the communication module.

[0047] The fan fault detection module is connected with at least two fans, and receives a fault signal sent by the fan; according to the fault signal and a corresponding voltage signal output by a clamping circuit, the MCU controls an LED indicator lamp to display a working state of the fan.

[0048] The fan speed control module outputs a PWM control signal through an MCU, and independently controls the speed of at least one or more fans through PWM; the clamping circuit clamps a high level possibly contacted by a PWM end, so as to avoid damaging the MCU.

[0049] The multi-channel independent control circuit module is connected with the main control module, and is used for selecting the number of fans to be detected, and can independently close a channel not needed to be detected.

[0050] The circuit of the fan fault detection module comprises resistors R107 and R108, capacitors C93 and C95, diodes D2 and D26; when the fan is normal, a feedback signal of the fan is grounded through a triode, a low-level signal is input to the MCU through the resistors R107 and R108, the capacitors C93 and C95, and the diodes D2 and D26, and the MCU outputs a signal to control the double-color LED FAN1 to be green; when the fan is abnormal, the feedback signal of the fan is suspended, a high-level signal is input to the MCU through the resistors R107 and R108, the capacitors C93 and C95, and the diodes D2 and D26, and the MCU outputs a signal to control the double-color LED FAN1 to be red.

[0051] The circuit of the fan speed control module comprises a communication control module U4, capacitors C92 and C91, resistors R102, R103 and R104, diodes TVS1, TVS2 and TVS3, an MCU U2.1, a diode D50 and a resistor R173; the communication module receives a single-channel or multi-channel fan speed control instruction sent by an upper computer or a middle computer, and transmits the single-channel or multi-channel fan speed control instruction to the MCU through a communication end, so that the MCU controls a circuit to output a PWM control signal to a corresponding single-channel or multi-channel fan speed control port through D5 and R173, and controls the fan to be steplessly speed-adjusted through PWM.

[0052] The circuit of the LED display control module comprises a diode LED1, a resistor R1, a switch SW1, an IC U3, capacitors C9 and C21; VCC supplies power to the diode LED1 through the IC U3, the capacitors C9 and C21, the switch SW1 and the resistor R1, the MCU outputs a corresponding channel control signal according to a voltage signal fed back by a single or multiple fault detection modules, and controls the corresponding channel LED to display; when the fan feedback is faulty, the LED1 displays a red light, and when the fan feedback signal is normal, the LED1 displays a green light.

[0053] The circuit of the communication circuit module includes IC U1, capacitors C92 and C91, resistors R102, R103 and R104, diodes TVS1, TVS2 and TVS3, and terminal CN4. The upper computer or the middle computer sends a control signal to the input end of the communication IC U1 via the diodes TVS1, TVS2 and TVS3, the resistors R102, R103 and R104, the capacitors C91 and C92, and the IC U1 receives the control signal and outputs the control signal to the MCU communication. The 485 communication is adopted, and the MODBUS protocol widely used in industrial control is adopted as the communication protocol.

[0054] The address setting module includes an address setting circuit including IC U1, capacitor C10, IC U5, resistor R8 and switch SW4. The IC U1 is used for voltage reduction, the capacitor C10 is used for power filtering, the IC U5 and the resistor R8 are powered, and the switch SW4 is used for outputting different voltage signals to the IC U5 to form 64-bit address setting and output signals to the main control MCU U2.1 by being set at different positions.

[0055] The fault feedback working principle is as follows: when any one or more of the multiple fans fail, the fault feedback detection module receives the fault signal, filters the interference signal through the clamping circuit, ensures the accuracy of fault judgment, the main control module judges whether the fan fails according to the received voltage signal, and outputs a signal to the communication protocol module to feed back the fault code to the PLC middle computer or the upper computer.

[0056] The speed control working principle is as follows: when the system temperature sensor detects that the temperature of one position or multiple positions in the heat dissipation system is abnormal, the speed signal is sent by the upper computer or the middle computer through the communication port to independently or simultaneously control the speed of the fan at one position or multiple positions. After the MCU receives the signal, the PWM speed control signal is output to the fan at one position or multiple positions to realize the PWM stepless speed control of the fan.

[0057] The LED display control working principle is as follows: when any one or more of the multiple fans fail, the fault detection port detects the fan fault feedback signal, the MCU controls the output control signal, and the LED display control module controls the double-color LED lamp according to the fault signal to directly display the working state of each fan.

[0058] The communication working principle is as follows: the 485 communication is adopted, and the MODBUS protocol widely used in industrial control is adopted as the communication protocol.

[0059] The utility model discloses a working principle and use flow: save I / O resource: adopt a I / O mouth to realize multichannel fan fault detection and speed regulation control, has solved traditional multichannel fan fault detection and speed regulation control in I / O mouth resource occupation too many problems, quick positioning fault: through the fan state of direct-view display of bicolor LED lamp, has solved multichannel fan system in difficult quick positioning fault fan problem, energy saving and noise reduction, prolong the life of fan: through the real -time monitoring of system, to one or more position fan carries out speed regulation control, when the system temperature is low, through PWM speed regulation control and adjusts low fan speed, or directly closes the fan, realizes the energy saving, prolongs the life of fan and reduces the system noise when the operation of multiple fan, utilizes MCU to one or more position fan carries out speed regulation control, when the system temperature is low, through PWM speed regulation control and adjusts low fan speed, or directly closes the fan, realizes the energy saving, reduces the system noise, prolongs the life of fan. Through every fan connection a fault feedback unit, when fan failure, fault feedback unit exports fault signal, and according to fault signal generates corresponding voltage signal transmission to MCU chip's signal input pin. Through fault detection and LED display control circuit output voltage signal, MCU can judge whether fan exists fault according to voltage signal. At the same time, through the display of bicolor LED lamp, can directly reflect the working condition of every channel fan, is convenient for quick positioning fault fan position. Through communication control module output signal connects PLC host computer or mid -level machine, realizes remote communication and real -time accurate fault feedback. Through address setting module, realizes the linkage cooperation communication feedback of most 64 heat dissipation systems.

Claims

1. A comprehensive module for wind turbine fault feedback and speed control, characterized in that: It includes a main control module, a fan fault detection module, a fan speed control module, an LED display control module, a communication circuit module, an address setting module, and a multi-channel independent control circuit module; The main control module includes fault signal input and output terminals; The wind turbine fault detection module includes multi-channel feedback detection; The fan speed control module includes a multi-channel LED display circuit and dual-color LED lights; The LED display control module includes multi-channel LED display circuits and dual-color LED lights; The communication circuit module is used for communication with the PLC host computer or intermediate computer; The address setting module supports up to 64-bit address settings for coordinated control and feedback of multiple heat dissipation systems.

2. The integrated module for wind turbine fault feedback and speed control according to claim 1, characterized in that: The main control module also includes multiple signal input pins and one signal output pin.

3. The integrated module for wind turbine fault feedback and speed control according to claim 1, characterized in that: The wind turbine fault detection module is connected to at least two wind turbines and receives fault signals from the wind turbines.

4. The integrated module for wind turbine fault feedback and speed control according to claim 1, characterized in that: The fan speed control module outputs a PWM control signal through the MCU to perform independent PWM speed control on at least one or more fans.

5. The integrated module for wind turbine fault feedback and speed control according to claim 1, characterized in that: The multi-channel independent control circuit module is connected to the main control module.

6. The integrated module for wind turbine fault feedback and speed control according to claim 3, characterized in that: The circuit of the wind turbine fault detection module includes resistors R107 and R108, capacitors C93 and C95, and diodes D2 and D26.

7. The integrated module for wind turbine fault feedback and speed control according to claim 4, characterized in that: The circuit of the fan speed control module includes a communication control module U4, capacitors C92 and C91, resistors R102, R103 and R104, diodes TVS1, TVS2 and TVS3, MCU U2.1, diode D50, and resistor R173.

8. The integrated module for wind turbine fault feedback and speed control according to claim 1, characterized in that: The circuit of the LED display control module includes diode LED1, resistor R1, switch SW1, IC U3, capacitor C9, and capacitor C21.

9. The integrated module for wind turbine fault feedback and speed control according to claim 1, characterized in that: The communication circuit module includes IC U1, capacitors C92 and C91, resistors R102, R103, and R104, diodes TVS1, TVS2, and TVS3, and terminal CN4.

10. The integrated module for wind turbine fault feedback and speed control according to claim 1, characterized in that: The address setting module includes an address setting circuit comprising IC U1, capacitor C10, IC U5, resistor array R8, and switch SW4.

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