Wired integrated control system of fan

Abstract

The invention relates to the field of fan control, in particular to a fan wired integrated control system. The control panel is provided with a plurality of cooling fans, the independent control box is electrically connected with the control panel through a cable, the control box comprises a multi-path RD signal processing module, a dial switch array, a state indication module, a fault output interface, a programmable speed regulation module and the like, and the control box is further provided with an RS485 communication interface and the like. A physical switch of the dial switch array correspondingly controls the state monitoring function of the cooling fan, the double-color LED array indicates the running state of the fan, and a fault output interface is uploaded to an upper computer through an interface circuit when the fan breaks down. Effective control and state monitoring of the fan are achieved, the state of the fan can be adjusted according to actual requirements, the effects of electrical isolation, rapid fault response and the like are achieved, meanwhile, the communication rate is adjustable, and the system adapts to different application scenes.

Description

Technical Field

[0001] The present application relates to the field of fan control, and in particular to a wired integrated control system for a fan. Background Art

[0002] In numerous scenarios, such as industrial production and electronic equipment operation, heat dissipation is a key factor in ensuring stable and efficient equipment operation. With the continuous advancement of technology, the demand for heat dissipation is increasing, and cooling systems that utilize multiple cooling fans working in concert have become widely used. A well-functioning heat dissipation system can effectively reduce equipment temperature, extend its lifespan, and improve its performance and reliability, thereby driving the sustainable development of various industries. For example, in data centers, the heat generated by the large number of servers requires an efficient cooling system to ensure stable server operation and safeguard the security and normal transmission of data.

[0003] In traditional multi-fan cooling systems, monitoring the operating status of each fan typically involves assigning a relay and LED indicator to each fan. This approach requires each fan to be equipped with a complete monitoring component. From a hardware perspective, the relay and LED indicator are mounted directly on the fan, forming an independent monitoring unit. This makes each fan a relatively independent entity, facilitating precise individual fan monitoring. Furthermore, this approach allows for rapid identification of faulty fans, as each fan has its own independent display and control components.

[0004] However, this traditional solution has significant drawbacks. Since each cooling fan requires its own independent relay and LED light, the entire cooling system requires a large number of monitoring components, which undoubtedly increases the production cost of the cooling fans. As the number of cooling fans increases, this cost issue becomes more pronounced, placing a significant financial burden on the company. Furthermore, the excessive number of components increases system complexity, making maintenance more difficult and the probability of failures greater. Summary of the Invention

[0005] The purpose of this application is to overcome the above technical problems and provide a wired integrated control system for wind turbines. A wired integrated control system for a wind turbine, comprising: A control panel with several cooling fans installed, and an independent control box electrically connected to the control panel via a cable; The control box comprises: Multi-channel RD signal processing module receives the RD signal of each cooling fan and performs electrical isolation processing. Each RD signal corresponds to an LED indicator; A DIP switch array, including physical switches corresponding to the number of cooling fans, with the enabled / disabled state of each switch corresponding to the status monitoring function of the corresponding cooling fan; A status indicator module includes a two-color LED array corresponding to the number of cooling fans, configured to display green when operating normally and switch to red when a fault occurs; The fault output interface is configured to remain disconnected when all cooling fans are normal, and to upload the fault information to the host computer through the interface circuit when any cooling fan fails; The control box further includes a programmable speed control module, which is connected to the cooling fan via a PWM signal line. The enabling state of the module is controlled by an external jumper selector.

[0006] By adopting the above technical solution, the cooling fan is installed on the control panel, and the LED light is integrated into the independent control box, which can save the production cost of the cooling fan. The control box can visually monitor the working status of the cooling fan; the multi-channel RD signal processing module performs electrical isolation processing on the RD signal to ensure signal stability and equipment safety; the DIP switch array can flexibly control the status monitoring function of each cooling fan; the status indication module intuitively displays the operating status of the cooling fan through the dual-color LED array; the fault output interface can accurately feedback the fault situation; the programmable speed regulation module can be connected to the cooling fan through the PWM signal line, and the activation status is controlled by the external jumper selector, so as to flexibly adjust the cooling fan speed.

[0007] Preferably, the number of physical switches in the DIP switch array strictly corresponds to the number of cooling fans, and the ON / OFF state of each switch directly controls the enabling / disabling of the RD signal processing channel of the corresponding cooling fan.

[0008] By adopting the above technical solution, multiple cooling fans are installed on a control panel, which is electrically connected to an independent control box. The control box is equipped with a multi-channel RD signal processing module, a dip switch array, a status indication module, a fault output interface, etc. The control box also has a programmable speed regulation module. The number of physical switches in the dip switch array strictly corresponds to the number of cooling fans. The ON / OFF state of each switch directly controls the enablement / disablement of the RD signal processing channel of the corresponding cooling fan. The status monitoring function of each cooling fan can be flexibly controlled according to actual needs, which can not only save the production cost of the cooling fans, but also visually monitor the working condition of each cooling fan, and can effectively electrically isolate the RD signals of each cooling fan to meet the monitoring needs under different working conditions.

[0009] Preferably, the display logic configuration of the dual-color LED array is determined by the working state of the fan, with a green light on when the fan is running and a red light on when the fan stops.

[0010] Preferably, the PWM signal output terminal of the programmable speed control module is connected to the fan busbar through a cable, and the internal PWM signal output circuit is automatically disconnected when an external speed control signal input is detected.

[0011] By adopting the above technical solution, the programmable speed control module can flexibly adjust the speed of the cooling fan. When an external speed control signal input is detected, the internal PWM signal output circuit is automatically disconnected to avoid signal conflicts, making the system speed control more intelligent and reliable.

[0012] Preferably, the power input port of the control box shares a DC power supply with the cooling fan, and power supply isolation is achieved through an LC filter circuit including a 10 μH inductor and a 220 μF capacitor.

[0013] By adopting the above technical solution, the power input port of the control box and the cooling fan share a DC power supply, which can simplify the design of the power supply system and reduce costs. The use of an LC filter circuit containing a 10μH inductor and a 220μF capacitor to achieve power supply isolation can reduce the interference of power supply noise on the control system and improve the stability and reliability of the system.

[0014] Preferably, the RD signal processing module adopts a PC817X series optocoupler isolator, the input side of which is connected to the RD signal of the cooling fan, and the output side is electrically isolated from the control module circuit board.

[0015] By adopting the above technical solution, the cooling fans are installed on the control panel, which is electrically connected to the independent control box. This can save the production cost of the cooling fans and realize visual monitoring. The multi-channel RD signal processing module receives the RD signal of each cooling fan and performs electrical isolation processing. The DIP switch array can control the status monitoring function of the corresponding cooling fan. The status indication module can intuitively display the cooling fan status. The fault output interface can promptly reflect cooling fan faults. On this basis, the RD signal processing module adopts PC817X series optocoupler isolators, which can further enhance the electrical isolation effect between the input side cooling fan RD signal and the output side control module circuit board.

[0016] Preferably, the physical position of the DIP switch forms a spatial mapping relationship with the dual-color LED indicator light, and the LED driving current corresponding to the switch in the disabled state is limited to below 5 mA.

[0017] By adopting the above technical solution, the cooling fan is installed on the control board, the LED light is integrated on the control box, and the control board is electrically connected to the control box, which saves the production cost of the cooling fan and can visually monitor the working condition of the cooling fan; the control box contains a programmable speed regulation module and the enabling state is controlled by an external jumper selector, which can flexibly select whether to enable the speed regulation module; the number of physical switches in the DIP switch array corresponds to the number of cooling fans, and the switch state control corresponds to the enabling / disabling of the cooling fan RD signal processing channel, which can be targeted to control the status monitoring function of each cooling fan; the physical position of the DIP switch and the two-color LED indicator form a spatial mapping relationship, which facilitates and intuitively understands the corresponding relationship between each switch and the indicator; the LED driving current corresponding to the disabled state switch is limited to less than 5mA, which can reduce energy consumption.

[0018] Preferably, the enabling state of the programmable speed control module is controlled by an external jumper selector, and the PWM signal output function of the SPEED+ and SPEED- terminals is activated when the jumper is connected.

[0019] By adopting the above technical solution, the enabling status of the programmable speed regulation module can be flexibly controlled by an external jumper selector. When the jumper is connected, the PWM signal output function of the SPEED+ and SPEED- terminals can be activated. Combined with other technical features, it can effectively monitor and control the working status of multiple cooling fans, reduce the production cost of cooling fans, and realize visual monitoring of the working status of each cooling fan through the control box.

[0020] Preferably, the control box is equipped with an RS485 communication interface, and uses a MAX3485 chip to implement Modbus RTU protocol communication. The communication rate is adjustable in four gears: 9600 / 19200bps via a dip switch group.

[0021] By adopting the above technical solution, the cooling fan is installed on the control panel, and the control panel is electrically connected to the independent control box, thereby saving the production cost of the cooling fan; the cooling fan can be adjusted in speed; the dip switch array can control the status monitoring function of the cooling fan; the status indication module can intuitively display the operating status of the cooling fan; the fault output interface can prompt the cooling fan failure; the RD signal processing module is electrically isolated by adopting the PC817X series optocoupler isolator; the physical position of the dip switch has a spatial mapping relationship with the two-color LED indicator light; the enabling state of the programmable speed regulation module is controlled by an external jumper selector; on this basis, the control box is equipped with an RS485 communication interface and uses the MAX3485 chip to implement Modbus RTU protocol communication, which can realize data communication, and the communication rate is adjustable in four gears of 9600 / 19200bps through the dip switch group, which can flexibly adjust the communication speed to meet different needs.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The cooling fan is installed on the control panel, and the LED light is integrated into an independent control box, saving the production cost of the cooling fan; 2. The control box's multi-channel RD signal processing module receives the RD signals from each cooling fan and performs electrical isolation processing, enabling visual monitoring of the operating status of each cooling fan; 3. The fault output interface is configured to remain disconnected when all cooling fans are operating normally. If any cooling fan fails, the signal is uploaded to the host computer through the interface circuit, making it easy to monitor the I / O of an external PC or PLC. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a principle block diagram of the wired integrated control system of the wind turbine in the embodiment of the present application.

[0024] Figure 2 This is a schematic diagram of the LCD display circuit of the wired integrated control system for the wind turbine according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-Figure 2 This application is described in further detail.

[0026] Example 1: Reference Figure 1 and Figure 2 The fan wired integrated control system provided in the embodiment of the present application includes a control board on which several cooling fans are installed, and an independent control box electrically connected to the control board through cables. The control board and the control box cooperate with each other to realize centralized control and monitoring of multiple cooling fans, reduce system cost and complexity, and facilitate maintenance and management.

[0027] Specifically, the control board is used to mount the cooling fan, providing physical support and electrical connections. The cooling fan can be any type of brushless DC blower, operating at voltages ranging from 12V to 24V, adapting to different operating environments and cooling requirements. The cooling fan's mounting method can be selected based on actual needs, such as bolt fastening or snap-on fastening, ensuring the fan is securely installed and easily removed and replaced.

[0028] The independent control box includes a multi-channel RD signal processing module, a DIP switch array, a status indication module, a fault output interface, and a programmable speed control module.

[0029] The multi-channel RD signal processing module receives and electrically isolates the RD signals from each cooling fan. Each RD signal corresponds to an LED indicator. By collecting and processing RD signals, the multi-channel RD signal processing module provides real-time monitoring and feedback of the cooling fan's operating status. The monitoring results are intuitively displayed using signal LED indicators, making it easier for users to identify and address faults promptly.

[0030] The DIP switch array contains physical switches corresponding to the number of cooling fans. The enabled / disabled state of each switch corresponds to the corresponding cooling fan's status monitoring function. The number of physical switches in the DIP switch array strictly corresponds to the number of cooling fans. The on / off state of each switch directly controls the enabling / disabling of the corresponding cooling fan's RD signal processing channel. Operators can flexibly control the status monitoring function of each cooling fan by toggling the DIP switch according to actual needs. For example, if a cooling fan does not need to be monitored temporarily, the corresponding DIP switch can be turned off to reduce unnecessary resource usage and energy consumption. By rationally configuring the switch states, the DIP switch array enables flexible control of the cooling fan status monitoring function, improving the system's adaptability and operability.

[0031] The status indicator module includes a dual-color LED array corresponding to the number of cooling fans, configured to display green during normal operation and red in the event of a fault. The dual-color LED array's display logic is configured as follows: when the corresponding cooling fan's RD signal current value is between 5 and 20 mA, it displays green; outside this range, it switches to red and triggers the closure of the fault output interface. The dual-color LED array utilizes high-brightness, high-contrast LEDs, enabling it to clearly display the cooling fan's operating status under varying lighting conditions. For example, in dimly lit environments, the dual-color LED array still emits bright light, making it easier for operators to observe. The status indicator module intuitively displays the cooling fan's operating status through the dual-color LED array, providing users with clear and accurate feedback and facilitating the timely detection and resolution of faults.

[0032] The programmable speed control module connects to the cooling fan via a PWM signal line, with the module's activation state controlled by an external jumper selector. The PWM signal output of the programmable speed control module is connected to the fan busbar via a cable. Upon detecting an external speed control signal input, the module automatically disconnects the internal PWM signal output circuit. The programmable speed control module precisely adjusts the cooling fan speed based on actual needs to meet varying cooling requirements. For example, when cooling requirements are low, the fan speed can be reduced to reduce energy consumption and noise; when cooling requirements are high, the fan speed can be increased to enhance cooling effectiveness. The programmable speed control module enables flexible adjustment of the cooling fan speed via PWM signals, improving the system's energy efficiency and adaptability.

[0033] The implementation principle of this embodiment is as follows: the wired integrated control system for the fan realizes the centralized control and monitoring of multiple cooling fans by installing multiple cooling fans on the control panel and integrating the monitoring and control components in an independent control box. The multi-channel RD signal processing module processes and electrically isolates the RD signals of the cooling fans, and uses a two-color LED indicator to intuitively display the working status of the fans. The DIP switch array can flexibly control the status monitoring function of each fan. The status indication module displays the working status of the fan in real time through the two-color LED array. The fault output interface can send a signal in time when a fan fails. The programmable speed control module can adjust the speed of the fan according to actual needs. This integrated design greatly reduces the production cost and complexity of the cooling system, improves the reliability and maintainability of the system, and also facilitates the management and control of the cooling system by the operator. Compared with the traditional solution of one fan corresponding to a set of monitoring components, it has obvious advantages and is an important improvement to the existing cooling system monitoring technology.

[0034] Example 2 This embodiment differs from the previous one in that the physical location of the DIP switch forms a spatial mapping relationship with the dual-color LED indicator, and the LED drive current for the disabled switch is limited to less than 5mA. This spatial mapping and current limiting allows for more precise control of the LED indicator display, preventing the LED from illuminating when the switch is disabled, reducing unnecessary energy consumption and interference. When the DIP switch is disabled, the circuit design limits the drive current of the corresponding LED indicator to a low level, preventing it from illuminating. The indicator only displays normally when the switch is enabled and the fan status changes.

[0035] The implementation principle of this embodiment is to establish a spatial mapping relationship between the DIP switch and the dual-color LED indicator, and limit the LED drive current in the disabled state. This improves the accuracy and reliability of the system display, reduces misjudgments and unnecessary energy consumption. This design optimizes the system's display logic, allowing operators to more clearly and accurately obtain information about the cooling fan's operating status. It also reduces overall system energy consumption, improves energy efficiency, and further enhances system performance and stability, effectively improving and optimizing the existing system.

[0036] Example 3 This embodiment differs from the previous embodiment in that the control box is equipped with an RS485 communication interface, using the MAX3485 chip to implement Modbus RTU protocol communication. The communication rate is adjustable via a DIP switch, with four settings: 9600 / 19200 bps. The RS485 communication interface offers advantages such as long communication distance and strong anti-interference capabilities, enabling reliable communication between the control box and external devices (such as PCs or PLCs). The MAX3485 chip is a commonly used RS485 transceiver chip that effectively supports the Modbus RTU protocol, ensuring accurate data transmission. The DIP switch allows for convenient setting of the communication rate to suit varying communication needs.

[0037] The implementation principle of this embodiment is as follows: configuring an RS485 communication interface and using the MAX3485 chip to implement Modbus RTU protocol communication enables the control box to effectively exchange data with external devices, realizing remote monitoring and control. The adjustable communication rate increases the flexibility and adaptability of the system, allowing the appropriate communication rate to be selected according to the actual communication environment and requirements, ensuring the stability and efficiency of data transmission. This expansion of communication functions improves the system's intelligence level and remote management capabilities, facilitates users to comprehensively monitor and control the cooling system, and further enhances the system's overall performance and application value.

[0038] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A wired integrated control system for a wind turbine, characterized in that: include: A control panel with several cooling fans installed, and an independent control box electrically connected to the control panel via a cable; The control box comprises: Multi-channel RD signal processing module receives the RD signal of each cooling fan and performs electrical isolation processing. Each RD signal corresponds to an LED indicator; A DIP switch array, including physical switches corresponding to the number of cooling fans, with the enabled / disabled state of each switch corresponding to the status monitoring function of the corresponding cooling fan; A status indicator module includes a two-color LED array corresponding to the number of cooling fans, configured to display green when operating normally and switch to red when a fault occurs; The fault output interface is configured to remain disconnected when all cooling fans are normal, and to upload the fault information to the host computer through the interface circuit when any cooling fan fails; The control box also includes a programmable speed control module, which is connected to the cooling fan via a PWM signal line. The enabling state of the module is controlled by an external jumper selector.

2. A wired integrated control system for a wind turbine according to claim 1, characterized in that: The number of physical switches in the DIP switch array strictly corresponds to the number of cooling fans, and the ON / OFF state of each switch directly controls the enablement / disablement of the corresponding cooling fan's RD signal processing channel.

3. A wired integrated control system for a wind turbine according to claim 2, characterized in that: The display logic configuration of the dual-color LED array is determined by the working state of the fan. When the fan is running, the green light is on, and when the fan stops, the red light is on.

4. A wired integrated control system for a wind turbine according to claim 1, characterized in that: The PWM signal output end of the programmable speed control module is connected to the fan busbar through a cable, and the internal PWM signal output circuit is automatically disconnected when an external speed control signal input is detected.

5. A wired integrated control system for a wind turbine according to claim 4, characterized in that: The power input port of the control box shares a DC power supply with the cooling fan, and power supply isolation is achieved through an LC filter circuit including a 10μH inductor and a 220μF capacitor.

6. A wired integrated control system for a wind turbine according to claim 1, characterized in that: The RD signal processing module adopts PC817X series optocoupler isolator, the input side is connected to the cooling fan RD signal, and the output side is electrically isolated from the control module circuit board.

7. A wired integrated control system for a wind turbine according to claim 6, characterized in that: The physical position of the DIP switch forms a spatial mapping relationship with the dual-color LED indicator light, and the LED driving current corresponding to the switch in the disabled state is limited to below 5mA.

8. A wired integrated control system for a wind turbine according to claim 6, characterized in that: The enabling state of the programmable speed control module is controlled by an external jumper selector. When the jumper is connected, the PWM signal output function of the SPEED+ and SPEED- terminals is activated.

9. A wired integrated control system for a wind turbine according to claim 6, characterized in that: The control box is equipped with an RS485 communication interface and uses a MAX3485 chip to implement Modbus RTU protocol communication. The communication rate is adjustable to four levels: 9600 / 19200 / 38400 / 115200 bps via a dip switch group.

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