Multi-channel fan fault detection and LED display control circuit

Abstract

The utility model belongs to the technical field of heat dissipation system control, and particularly relates to a multi-channel fan fault detection and LED display control circuit in the field of multi-channel fan fault detection and LED display control circuits, which comprises a main control module, a fan fault detection module, an LED display control module and a multi-channel independent control circuit module. The main control module comprises a fault signal input end and a fault signal output end; the MCU (micro-control unit) receives a signal of the fan fault detection module, is used for judging a fault and controlling a relay to act, and judges whether the fan fails or not through the MCU (micro-control unit); the relay is controlled to be switched on or switched off according to a judgment result, and a signal is output to a PLC or other detection equipment; interference signals are filtered through a clamping circuit, false alarm faults are avoided, visual display is achieved, the state of each fan is visually displayed through a double-color LED lamp, the fault fan can be conveniently and rapidly positioned, multi-channel compatibility is achieved, multi-channel fan simultaneous detection and display are supported, and the system is suitable for a complex fan system.

Description

Technical Field

[0001] This utility model belongs to the field of heat dissipation system control technology, specifically involving multi-channel fan fault detection and LED display control circuit. Background Technology

[0002] In multi-fan systems, fault detection and status display of the fans are crucial for ensuring stable system operation. Traditional detection methods are susceptible to line voltage drops, high currents, or signal interference, leading to false alarms. Furthermore, existing technologies lack intuitive status display methods, making it difficult to quickly locate faulty fans. Therefore, a circuit capable of accurately detecting faults and intuitively displaying their status is needed. Utility Model Content

[0003] This utility model provides a multi-channel fan fault detection and LED display control circuit, which can accurately detect fan faults, distinguish system interference, and intuitively display the working status of each fan through dual-color LEDs.

[0004] This utility model provides the following technical solution: a multi-channel fan fault detection and LED display control circuit, characterized in that it includes a main control module, a fan fault detection module, an LED display control module, and a multi-channel independent control circuit module;

[0005] The multi-channel fan fault detection and LED display control circuit includes a main control module, a fan fault detection module, an LED display control module, and a multi-channel independent control circuit module. The main control module includes fault signal input and output terminals. It receives signals from the fan fault detection module to determine the fault and control the relay action. It uses an MCU (microcontroller unit) to determine whether the fan is faulty. Based on the determination result, it controls the closing or opening of the relay and outputs signals to a PLC or other detection equipment.

[0006] The wind turbine fault detection module includes a multi-channel feedback detection terminal and a clamping circuit; it is used to receive fault signals from multiple wind turbines and determine whether the wind turbine is faulty based on the signal voltage; the clamping circuit is used to filter voltage fluctuations caused by line voltage drop or signal interference to avoid false fault reports.

[0007] The LED display control module includes multi-channel LED display circuits and dual-color LED lights; it is used to intuitively display the working status of each fan, making it easy to quickly locate faulty fans.

[0008] The main control module also includes three signal output pins and one signal input pin; it receives signals from the fan fault detection module, determines whether the fan has a fault, and controls the relay to operate.

[0009] The wind turbine fault detection module is connected to at least two wind turbines and receives fault signals from the wind turbines. Based on the fault signals and the corresponding voltage signals output by the clamping circuit, it controls the LED indicator to display the wind turbine's operating status.

[0010] The LED display control module supports fault display for at least two fans, and displays the fan status through dual-color LEDs; when the fan is normal, the dual-color LEDs light up green; when the fan is abnormal, the dual-color LEDs light up red.

[0011] The multi-channel independent control circuit module is connected to the main control module; it is connected to the main control module and is used to select the number of fans to be detected, and can shut down channels that do not need to be detected individually.

[0012] This includes resistor R1, Zener diode ZD1, dual-color LED, diode D1, resistor R2, transistor Q2, and resistors R3 and R4. When the fan is normal, VCC is connected to R1, the fan feedback signal is grounded through the transistor, and the dual-color LED is green. When the fan is abnormal, the fan feedback signal is left floating, VCC is connected to ground through R1, ZD1, D1, R2, and R3, and the dual-color LED is red. At the same time, Q2 is turned on to send a fault signal to the MCU.

[0013] The main control module also includes an MCU control circuit, which includes a microcontroller, a resistor R30, a transistor Q4, a relay K3, and terminal X1. The microcontroller feeds back a voltage signal through the fault detection circuit to determine whether there is a fault in the fan, and outputs a level signal through the resistor R30 to turn on the transistor Q4, which in turn controls the relay K3 to open, and outputs the signal through terminal X1 to the PLC host computer or other detection equipment.

[0014] The beneficial effects of this utility model are: 1. High-precision detection: interference signals are filtered through clamping circuit to avoid false alarms.

[0015] 2. Intuitive display: The status of each fan is displayed intuitively through dual-color LED lights, making it easy to quickly locate the faulty fan.

[0016] 3. Multi-channel compatibility: Supports simultaneous detection and display of multiple fans, suitable for complex fan systems.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the multi-channel fan fault detection and dual-color LED display control circuit in this utility model;

[0019] Figure 2 This is a schematic diagram of the MCU control circuit and output feedback circuit in this utility model;

[0020] Figure 3 This is a structural framework diagram of the control principle in this utility model; Detailed Implementation

[0021] Please see Figures 1-3 This utility model provides the following technical solution: a multi-channel fan fault detection and LED display control circuit, including a main control module, a fan fault detection module, an LED display control module, and a multi-channel independent control circuit module; the main control module includes a fault signal input and output terminal; it receives signals from the fan fault detection module to determine the fault and control the relay to operate, and determines whether the fan is faulty through the MCU (microcontroller unit); it controls the closing or opening of the relay according to the judgment result, and outputs signals to the PLC or other detection equipment.

[0022] The wind turbine fault detection module includes a multi-channel feedback detection terminal and a clamping circuit; it is used to receive fault signals from multiple wind turbines and determine whether the wind turbine is faulty based on the signal voltage; the clamping circuit is used to filter voltage fluctuations caused by line voltage drop or signal interference to avoid false fault reports.

[0023] The LED display control module includes multi-channel LED display circuits and dual-color LED lights; it is used to intuitively display the working status of each fan, making it easy to quickly locate faulty fans.

[0024] The main control module also includes three signal output pins and one signal input pin; it receives signals from the fan fault detection module, determines whether the fan has a fault, and controls the relay to operate.

[0025] The fan fault detection module is connected to at least two fans and receives fault signals from the fans; based on the fault signals and the corresponding voltage signals output by the clamping circuit, it controls the LED indicator to display the fan's operating status.

[0026] The LED display control module supports fault display for at least two fans, and displays the fan status through dual-color LEDs; when the fan is normal, the dual-color LEDs light up green; when the fan is abnormal, the dual-color LEDs light up red.

[0027] The multi-channel independent control circuit module is connected to the main control module; it is connected to the main control module to select the number of fans to be detected and can shut down channels that do not need to be detected individually.

[0028] It also includes resistor R1, Zener diode ZD1, dual-color LED, diode D1, resistor R2, transistor Q2, and resistors R3 and R4. When the fan is normal, VCC is connected to R1, the fan feedback signal is grounded through the transistor, and the dual-color LED is green. When the fan is abnormal, the fan feedback signal is left floating, VCC is connected to ground through R1, ZD1, D1, R2, and R3, and the dual-color LED is red. At the same time, Q2 is turned on to send a fault signal to the MCU.

[0029] The main control module also includes an MCU control circuit, which includes a microcontroller, a resistor R30, a transistor Q4, a relay K3, and terminal X1. The microcontroller feeds back a voltage signal through the fault detection circuit to determine whether the fan has a fault, and outputs a level signal through the resistor R30 to turn on the transistor Q4, which in turn controls the relay K3 to open, and outputs the signal through terminal X1 to the PLC host computer or other detection equipment.

[0030] The working principle and usage process of this utility model are as follows: When any one of the multiple fans fails, the fault feedback detection module receives the fault signal and filters interference signals through a clamping circuit to ensure the accuracy of fault diagnosis. The main control module determines whether the fan is faulty based on the received voltage signal and controls the relay to operate. Simultaneously, the LED display control module controls dual-color LEDs based on the fault signal to visually display the operating status of each fan. Each fan is connected to a fault feedback unit. When a fan fails, the fault feedback unit outputs a fault signal and generates a corresponding voltage signal based on the fault signal, which is transmitted to the signal input pin of the MCU chip. Through the voltage signal output by the fault detection and LED display control circuit, the MCU can determine whether the fan is faulty based on the voltage signal. At the same time, the dual-color LED display can visually reflect the operating status of each fan, facilitating quick location of the faulty fan.

Claims

1. A multi-channel fan fault detection and LED display control circuit, characterized in that: The fan fault detection module, the LED display control module, and the multi-channel independent control circuit module are connected to the main control module. The main control module comprises a fault signal input and output end. The fan fault detection module comprises a multi-channel feedback detection end and a clamping circuit. The LED display control module comprises a multi-channel LED display circuit and a double-color LED lamp.

2. The multiple fan fault detection and LED display control circuit according to claim 1, wherein: The main control module further comprises three signal output pins and one signal input pin.

3. The multiple fan fault detection and LED display control circuit according to claim 1, wherein: The fan fault detection module is connected to at least two fans and receives the fault signals emitted by the fans.

4. The multiple fan fault detection and LED display control circuit of claim 1, wherein: The LED display control module supports the fault display of at least two fans and displays the fan state through a double-color LED lamp.

5. The multiple fan fault detection and LED display control circuit of claim 1, wherein: The main control module is connected to the multi-channel independent control circuit module.

6. The multiple fan fault detection and LED display control circuit of claim 4, wherein: The main control module further comprises an MCU control circuit, which comprises a microcontroller, a resistor R30, a triode Q4, and a relay K3 terminal X1.

7. The multiple fan fault detection and LED display control circuit of claim 1, wherein: ​

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