A fan wired integrated control system

Abstract

The application relates to the field of fan control, in particular to a wired integrated control system of a fan. The wired integrated control system comprises a control panel provided with a plurality of cooling fans and a separate control box electrically connected with the control panel through a cable, the control box comprises a plurality of RD signal processing modules, a dial switch array, a state indication module, a fault output interface, a programmable speed regulation module and the like, and is further provided with an RS485 communication interface and the like. The physical switches of the dial switch array correspond to the control of the state monitoring function of the cooling fan, a double-color LED array indicates the running state of the fan, and the fault output interface transmits the fault of the fan to an upper computer through an interface circuit. The application can effectively control and monitor the state of the fan, can adjust the state of the fan according to actual requirements, has the effects of electrical isolation and rapid response to faults, and simultaneously has an adjustable communication rate, and is suitable for different application scenarios.

Description

Technical Field

[0001] This application relates to the field of wind turbine control, and in particular to a wired integrated control system for wind turbines. Background Technology

[0002] In numerous scenarios, including industrial production and electronic equipment operation, heat dissipation is a key factor in ensuring the stable and efficient operation of equipment. With continuous technological advancements, the demand for heat dissipation is increasing, leading to the widespread application of cooling systems with multiple cooling fans working in tandem. A good cooling system can effectively reduce equipment temperature, extend equipment lifespan, and improve equipment performance and reliability, thereby driving the sustainable development of various industries. For example, in data centers, the heat generated by a large number of servers requires efficient cooling systems to ensure stable server operation and guarantee data security and normal transmission.

[0003] In traditional multi-fan cooling systems, monitoring the operation of each fan typically involves assigning a separate relay and LED to each fan. This approach requires each fan to have its own complete monitoring system; from a hardware layout perspective, the relay and LED are directly mounted on the fan, forming an independent monitoring unit. This makes each fan a relatively independent entity, facilitating precise monitoring of individual fans. Furthermore, this method allows for quicker identification of faulty fans, as each fan has its own independent display and control components.

[0004] However, this traditional approach has significant drawbacks. Because each cooling fan requires its own independent relay and LED, the entire cooling system necessitates a large number of monitoring components, which undoubtedly increases the production cost of the cooling fans. As the number of cooling fans required increases, the cost issue becomes more pronounced, placing a significant economic burden on enterprises. Furthermore, the excessive number of components increases system complexity, raises maintenance difficulty, and increases the probability of failure. Summary of the Invention

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide a wired integrated control system for wind turbines. A wired integrated control system for wind turbines, comprising: A control board equipped with several cooling fans, and An independent control box electrically connected to the control board via a cable; The control box includes: The multi-channel RD signal processing module receives the RD signals from each cooling fan and performs electrical isolation processing. Each RD signal corresponds to an LED indicator. The DIP switch array contains physical switches corresponding to the number of cooling fans, and the enabled / disabled state of each switch corresponds to the status monitoring function of the corresponding cooling fan. 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 switch to red when there is a fault. The fault output interface is configured to remain disconnected when all cooling fans are working normally, and to transmit 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 activation status of this module is controlled by an external jumper selector.

[0006] By adopting the above technical solution, the cooling fan is mounted on the control board, and the LED lights are integrated into an independent control box, which can save on the production cost of the cooling fan. The control box can provide visual monitoring of the cooling fan's operation. The multi-channel RD signal processing module provides electrical isolation for the RD signals, ensuring signal stability and equipment safety. The DIP switch array can flexibly control the status monitoring function of each cooling fan. The status indicator module displays the operating status of the cooling fan intuitively through a dual-color LED array. The fault output interface can accurately report fault conditions. The programmable speed control module can be connected to the cooling fan via a PWM signal line, and its activation status can be controlled by an external jumper selector, flexibly adjusting 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 activation / deactivation of the corresponding cooling fan's RD signal processing channel.

[0008] By adopting the above technical solution, multiple cooling fans are installed on a control board, 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 indicator module, a fault output interface, etc. The control box also has a programmable speed control 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 activation / deactivation of the corresponding cooling fan's RD signal processing channel. The status monitoring function of each cooling fan can be flexibly controlled according to actual needs. This not only saves cooling fan production costs but also provides visual monitoring of the working status of each cooling fan and effectively performs electrical isolation processing on the RD signals of each cooling fan, meeting the monitoring needs under different working conditions.

[0009] Preferably, the display logic of the dual-color LED array is configured such that the light is green when the fan is running and red when the fan is stopped.

[0010] Preferably, the PWM signal output terminal of the programmable speed control module is connected to the fan busbar via a ribbon 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 is detected, the internal PWM signal output circuit is automatically disconnected to avoid signal conflict, 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 containing a 10μH inductor and a 220μF capacitor.

[0013] By adopting the above technical solutions, the power input port of the control box and the cooling fan share a DC power supply, which simplifies the design of the power supply system and reduces 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 uses a PC817X series optocoupler isolator, with its input side connected to the RD signal of the cooling fan and its output side electrically isolated from the control module circuit board.

[0015] By adopting the above technical solution, the cooling fan is mounted on the control board, which is electrically connected to an independent control box. This saves on the production cost of the cooling fan and enables visual monitoring. The multi-channel RD signal processing module receives the RD signals from 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 indicator module can intuitively display the status of the cooling fan, and the fault output interface can promptly reflect the cooling fan fault. On this basis, the RD signal processing module uses a PC817X series optocoupler isolator, 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, and the LED driving current corresponding to the switch in the disabled state is limited to below 5mA.

[0017] By adopting the above technical solution, the cooling fan is mounted on the control board, and the LED lights are integrated into the control box, with the control board and control box electrically connected. This saves on the production cost of the cooling fan and allows for visual monitoring of the cooling fan's operation. The control box includes a programmable speed control module, and its activation status is controlled by an external jumper selector, allowing for flexible selection of whether the speed control module is enabled or disabled. The number of physical switches in the DIP switch array corresponds to the number of cooling fans, and the switch status controls the activation / deactivation of the corresponding cooling fan's RD signal processing channel, allowing for targeted control of the status monitoring function of each cooling fan. The physical positions of the DIP switches and the dual-color LED indicator lights form a spatial mapping relationship, making it easy to intuitively understand the correspondence between each switch and the indicator light. In the disabled state, the LED drive current corresponding to the switch is limited to below 5mA, which reduces energy consumption.

[0018] Preferably, the activation 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.

[0019] By adopting the above technical solution, the activation status of the programmable speed control 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 is possible to effectively monitor and control the working status of multiple cooling fans, reduce the production cost of cooling fans, and realize the 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, uses a MAX3485 chip to implement Modbus RTU protocol communication, and the communication rate is adjustable in four levels (9600 / 19200bps) via a DIP switch group.

[0021] By adopting the above technical solution, the cooling fan is mounted on the control board, which is electrically connected to an independent control box, saving on the production cost of the cooling fan; the cooling fan speed can be adjusted; the DIP switch array can control the cooling fan's status monitoring function; the status indicator module can intuitively display the cooling fan's operating status; the fault output interface can indicate cooling fan faults; the RD signal processing module is electrically isolated by using a PC817X series optocoupler isolator; the physical position of the DIP switches has a spatial mapping relationship with the dual-color LED indicator; the programmable speed control module's activation status is controlled by an external jumper selector; based on this, the control box is equipped with an RS485 communication interface using a MAX3485 chip to implement Modbus RTU protocol communication, enabling data communication, and the communication rate can be adjusted to four levels (9600 / 19200bps) via the DIP switch group, allowing flexible adjustment of the communication speed to adapt to different needs.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By mounting the cooling fan on the control board and integrating the LED lights into a separate control box, the production cost of the cooling fan is saved; 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 operation of each cooling fan; 3. The fault output interface is configured to remain disconnected when all cooling fans are working properly, and to transmit the fault information to the host computer via the interface circuit when any cooling fan fails, so that the I / O of an external PC or PLC can monitor the fault. Attached Figure Description

[0023] Figure 1 This is a schematic block diagram of the wired integrated control system for a wind turbine according to an embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the LCD display circuit of the wired integrated control system for a fan according to an embodiment of this application. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0026] Example 1: Reference Figure 1 and Figure 2 The wired integrated control system for fans provided in this application includes a control board with several cooling fans installed, and an independent control box electrically connected to the control board via cables. The control board and the control box cooperate with each other to realize centralized control and monitoring of multiple cooling fans, reducing system cost and complexity, while facilitating maintenance and management.

[0027] Specifically, the control board is used to mount the cooling fan, providing physical support and electrical connections for it. The cooling fan can be any type of DC brushless fan, operating at voltages ranging from 12V to 24V, adaptable to different working environments and cooling requirements. The installation method for the cooling fan can be selected according to the actual situation, such as by bolt fixing or snap-fit ​​connection, ensuring the fan is securely installed and easy to disassemble and replace.

[0028] The independent control box includes a multi-channel RD signal processing module, a DIP switch array, a status indicator 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 acquiring and processing the RD signals, the multi-channel RD signal processing module enables real-time monitoring and feedback of the cooling fan's operating status. Simultaneously, the monitoring results are visually presented using the signal LED indicators, facilitating timely fault detection and handling by the user.

[0030] The DIP switch array contains physical switches corresponding to the number of cooling fans. The on / off state of each switch corresponds to the status monitoring function of the respective cooling fan. 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 activation / deactivation 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 switches as needed. For example, when a cooling fan does not require monitoring, its corresponding DIP switch can be set to the OFF state to reduce unnecessary resource occupation and energy consumption. By rationally configuring the switch states, the DIP switch array achieves 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 switch to red during a fault. The display logic of the dual-color LED array is configured as follows: green is displayed when the RD signal current value of the corresponding cooling fan is in the 5-20mA range; when it exceeds this range, it switches to red and triggers the fault output interface to close. The dual-color LED array uses high-brightness, high-contrast LED beads, enabling clear display of the cooling fan's operating status under different lighting conditions. For example, in dimly lit environments, the dual-color LED array still emits bright light, facilitating operator observation. The status indicator module intuitively displays the cooling fan's operating status through the dual-color LED array, providing users with clear and accurate information feedback, which helps in the timely detection and handling of faults.

[0032] The programmable speed control module connects to the cooling fan via a PWM signal line, and its activation status is controlled by an external jumper selector. The PWM signal output terminal of the programmable speed control module connects to the fan busbar via a ribbon cable, automatically disconnecting the internal PWM signal output circuit when an external speed control signal is detected. The programmable speed control module can precisely adjust the cooling fan speed according to actual needs to meet different cooling requirements. For example, when cooling demand is low, the fan speed can be reduced to decrease energy consumption and noise; when cooling demand is high, the fan speed can be increased to enhance cooling performance. The programmable speed control module achieves flexible adjustment of the cooling fan speed through PWM signals, improving the system's energy efficiency and adaptability.

[0033] The implementation principle of this embodiment is as follows: This wired integrated control system for the fan achieves centralized control and monitoring of multiple cooling fans by mounting them on a control board and integrating monitoring and control components into an independent control box. A multi-channel RD signal processing module processes and electrically isolates the RD signals of the cooling fans, and uses dual-color LED indicators to intuitively display the fan's operating status. A DIP switch array can flexibly control the status monitoring function of each fan, the status indicator module displays the fan's operating status in real time through a dual-color LED array, the fault output interface can promptly send a signal when a fan malfunctions, and the programmable speed control module can adjust the fan speed according to actual needs. This integrated design significantly reduces the production cost and complexity of the cooling system, improves the system's reliability and maintainability, and also facilitates the management and control of the cooling system by operators. Compared to the traditional scheme where one fan corresponds to one set of monitoring components, it has significant advantages and represents a major improvement in existing cooling system monitoring technology.

[0034] Example 2 The difference between this embodiment and the previous one is that the physical position of the DIP switch forms a spatial mapping relationship with the dual-color LED indicator. When the switch is disabled, the LED drive current is limited to below 5mA. This spatial mapping and current limitation allow for more precise control of the LED indicator, preventing accidental LED illumination when the switch is disabled and 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 the indicator from illuminating. It only displays normally when the switch is enabled and the fan status changes.

[0035] The implementation principle of this embodiment is as follows: by establishing a spatial mapping relationship between the DIP switch and the dual-color LED indicator, and limiting the LED drive current in the disabled state, the accuracy and reliability of the system display can be improved, and misjudgments and unnecessary energy consumption can be reduced. This design optimizes the system's display logic, enabling operators to obtain the operating status information of the cooling fan more clearly and accurately. It also reduces the overall energy consumption of the system, improves energy utilization efficiency, and further enhances the system's performance and stability, representing an effective improvement and optimization of the original system.

[0036] Example 3 The difference between this embodiment and the previous one is that the control box is equipped with an RS485 communication interface, using a MAX3485 chip to implement Modbus RTU protocol communication. The communication rate is adjustable in four levels (9600 / 19200bps) via a DIP switch group. The RS485 communication interface has advantages such as long communication distance and strong anti-interference capability, 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 communication rate can be easily set via the DIP switch group to adapt to different communication needs.

[0037] The implementation principle of this embodiment is as follows: An RS485 communication interface is configured, and a MAX3485 chip is used to implement Modbus RTU protocol communication, enabling the control box to effectively interact with external devices, achieving remote monitoring and control. The adjustable communication rate increases the system's flexibility and adaptability, allowing selection of an appropriate communication rate based on the actual communication environment and needs, ensuring the stability and efficiency of data transmission. This expanded communication function improves the system's intelligence level and remote management capabilities, facilitating comprehensive monitoring and control of the cooling system by users, further enhancing the system's overall performance and application value.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wired integrated control system for a wind turbine, characterized in that, include: A control board equipped with several cooling fans, and An independent control box electrically connected to the control board via a cable; The control box includes: The multi-channel RD signal processing module receives the RD signals from each cooling fan and performs electrical isolation processing. Each RD signal corresponds to an LED indicator. The DIP switch array contains physical switches corresponding to the number of cooling fans, and the enabled / disabled state of each switch corresponds to the status monitoring function of the corresponding cooling fan. 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 switch to red when there is a fault. The fault output interface is configured to remain disconnected when all cooling fans are working normally, and to transmit 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 activation status of this module is controlled by an external jumper selector. The RD signal current value of the cooling fan is green when it is in the range of 5-20mA, and switches to red when it exceeds this range and triggers the fault output interface to close. 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 activation / deactivation of the corresponding cooling fan's RD signal processing channel.

2. The wired integrated control system for a wind turbine according to claim 1, characterized in that, The display logic configuration of the dual-color LED array is as follows: it is determined by the working state of the fan; when the fan is running, the light is green, and when the fan stops, the light is red.

3. The wired integrated control system for a wind turbine according to claim 1, characterized in that, The PWM signal output terminal of the programmable speed control module is connected to the fan busbar via a ribbon cable. When an external speed control signal is detected, the internal PWM signal output circuit is automatically disconnected.

4. The wired integrated control system for a wind turbine according to claim 3, 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 containing a 10μH inductor and a 220μF capacitor.

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

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

7. A wired integrated control system for a wind turbine according to claim 5, characterized in that, The activation status 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.

8. A wired integrated control system for a wind turbine according to claim 5, 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 can be adjusted to four levels: 9600 / 19200 / 38400 / 115200bps via a DIP switch group.

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