Fan manual variable pitch operation device based on wireless transmission technology

Abstract

The utility model discloses a fan manual variable pitch operation device based on the wireless transmission technology. The fan manual variable pitch operation device comprises a single chip microcomputer, a Bluetooth module, a power supply module, a control circuit, an interface module and a mobile terminal. The single-chip microcomputer is in communication connection with the mobile terminal through the Bluetooth module. The power supply module is connected with the Bluetooth module, the single-chip microcomputer and the control circuit. The single-chip microcomputer is connected with the control circuit. And the control circuit is connected with the fan variable pitch cabinet through the interface module. The cable fault risk is reduced, an operator does not need to enter the hub in the whole process, the operation risk in a closed space and a narrow space is reduced, a notebook computer does not need to be arranged, the tool cost is saved by about 30%, remote operation is achieved through a mobile phone APP, the interface is friendly, the operation complexity is reduced, the weight is light, and carrying is convenient.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine control equipment, specifically to a wind turbine manual pitch control device based on wireless transmission technology. Background Technology

[0002] Currently, manual pitch control of wind turbines in wind farms relies on traditional handheld control boxes or laptops, which presents the following problems:

[0003] (1) Poor portability: Traditional hand-operated boxes are bulky (approximately 260mm×160mm×90mm) and inconvenient to carry;

[0004] (2) High safety risks: Operators need to enter the inside of the wheel hub to perform pitch control operations, which poses risks of working in confined spaces and narrow spaces.

[0005] (3) Complex operation: It requires connection to wired devices or computers, the cables are easily damaged, and the operation interface is not intuitive;

[0006] (4) High cost: A dedicated laptop computer is required, which increases tool costs.

[0007] (5) There is no wireless control scheme for the pitch operation of wind turbine generator sets. Utility Model Content

[0008] In view of the fact that there is no wireless control scheme for the pitch operation of wind turbine generator sets in the existing technology, this utility model provides a wind turbine manual pitch operation device based on wireless transmission technology, which solves the problem of the lack of wireless control scheme for the pitch operation of wind turbine generator sets.

[0009] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0010] A wind turbine manual pitch control device based on wireless transmission technology is provided, which includes a microcontroller, a Bluetooth module, a power supply module, a control circuit, an interface module, and a mobile terminal.

[0011] The microcontroller communicates with the mobile terminal via a Bluetooth module;

[0012] The power supply module is connected to the Bluetooth module, the microcontroller, and the control circuit.

[0013] The microcontroller is connected to the control circuit;

[0014] The control circuit is connected to the wind turbine pitch control unit via an interface module.

[0015] Furthermore, the microcontroller includes an AT89S51 chip U1. Pins 31 and 40 of chip U1 are connected to the output of the power supply module. Pin 9 of chip U1 is connected to the negative terminal of a polarized capacitor C1 and a grounding resistor R2. The positive terminal of polarized capacitor C1 is connected to the output of the power supply module. Pins 1, 2, 3, and 4 of chip U1 are connected to the negative terminals of LEDs L1, L2, L3, and L4, respectively. The positive terminals of LEDs L1, L2, L3, and L4 are connected to one end of resistors R6, R7, R8, and R9, respectively. The other ends of resistors R6, R7, R8, and R9 are all connected to the output of the power supply module.

[0016] Pin 5 of chip U1 is connected to one end of relay K1 and one end of resistor R5; pin 6 of chip U1 is connected to one end of relay K2 and one end of resistor R4; pin 7 of chip U1 is connected to one end of relay K3 and one end of resistor R3; pin 8 of chip U1 is connected to one end of relay K4 and one end of resistor R1; the other ends of relays K1, K2, K3, and K4 are all grounded; the other ends of resistors R5, R4, R3, and R1 are all connected to the output terminal of the power supply module.

[0017] Pin 18 of chip U1 is connected to one end of capacitor C3 and one end of crystal oscillator Y1 respectively; pin 19 of chip U1 is connected to one end of capacitor C2 and the other end of crystal oscillator Y1 respectively; pin 20 of chip U1, the other end of capacitor C3 and the other end of capacitor C2 are all grounded.

[0018] Furthermore, the Bluetooth module includes a BCM chip. The TX and RX pins of the BCM chip are connected to pins 11 and 10 of chip U1, respectively. The PIO11 pin of the BCM chip is connected to one end of switch S6 and grounding resistor R21, respectively. The other end of switch S6 is connected to a 3.3V voltage. The PIO8 pin of the BCM chip is connected to the positive terminal of LED D6 through resistor R11. The negative terminal of LED D6 is grounded.

[0019] Furthermore, the control circuit includes a driver enable switch S1, a manual operation switch S2, a manual forward / reverse switch S3, a manual fast / slow speed switch S4, and a manual zeroing switch S5.

[0020] The driver enable switch S1 includes switches a and b connected in parallel. One end of switches a and b is connected to the 24V positive output terminal of the power supply module. The other end of switch a is connected to one end of the manual operation switch S2, one end of the manual forward / reverse switch S3, one end of the manual fast / slow speed switch S4, and one end of the manual zeroing switch S5, respectively. The other end of switch b is connected to the positive terminal of diode D1 and the 24V negative output terminal of the power supply module, respectively. The negative terminal of diode D1 is connected to the driver enable signal input terminal of the wind turbine pitch control unit.

[0021] The other end of the manual operation switch S2 is connected to the manual operation signal input terminal of the wind turbine pitch control unit; the on / off state of the manual operation switch S2 is controlled by relay K1.

[0022] The other end of the manual forward / reverse switch S3 is connected to the manual forward / reverse signal input terminal of the wind turbine pitch control unit; the on / off state of the manual forward / reverse switch S3 is controlled by relay K2.

[0023] The other end of the manual fast / slow speed switch S4 is connected to the manual fast / slow speed signal input terminal of the wind turbine pitch control unit; the on / off state of the manual fast / slow speed switch S4 is controlled by relay K3.

[0024] The other end of the manual zero-calibration switch S5 is connected to the manual zero-calibration signal input terminal of the wind turbine pitch control unit; the on / off state of the manual zero-calibration switch S5 is controlled by relay K4.

[0025] Furthermore, the interface module is an aviation plug.

[0026] Furthermore, the microcontroller, Bluetooth module, power supply module, and control circuit are all housed within the housing, which measures 80mm × 50mm × 50mm.

[0027] The beneficial effects of this utility model are as follows: This utility model uses a Bluetooth module as a communication device between a microcontroller and a mobile terminal, enabling control commands from the mobile terminal to be transmitted infinitely to the microcontroller. The microcontroller performs corresponding operations on the control circuit based on the received control commands, reducing the risk of cable failure. It eliminates the need for operators to enter the wheel hub for the entire process, reducing the risk of working in confined or narrow spaces. It also eliminates the need for a laptop computer, saving approximately 30% on tool costs. Remote operation is achieved through a mobile APP, which has a user-friendly interface, reduces operational complexity, and is lightweight and easy to carry. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the device;

[0029] Figure 2 This is a circuit diagram of chip U1 with model number AT89S51;

[0030] Figure 3 This is a circuit diagram of the Bluetooth module;

[0031] Figure 4 This is a schematic diagram of the control circuit;

[0032] Figure 5 This is a schematic diagram of the finished product of this device;

[0033] Figure 6 This is a schematic diagram of the mobile app interface. Detailed Implementation

[0034] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All inventions utilizing the concept of this utility model are protected.

[0035] like Figure 1 As shown, the wind turbine manual pitch control device based on wireless transmission technology includes a microcontroller, a Bluetooth module, a power supply module, a control circuit, an interface module, and a mobile terminal.

[0036] The microcontroller communicates with the mobile terminal via a Bluetooth module;

[0037] The power supply module is connected to the Bluetooth module, the microcontroller, and the control circuit.

[0038] The microcontroller is connected to the control circuit;

[0039] The control circuit is connected to the wind turbine pitch control unit via an interface module.

[0040] like Figure 2 As shown, the microcontroller includes an AT89S51 chip U1. Pins 31 and 40 of chip U1 are connected to the output of the power supply module. Pin 9 of chip U1 is connected to the negative terminal of polarized capacitor C1 and grounding resistor R2, respectively. The positive terminal of polarized capacitor C1 is connected to the output of the power supply module. Pins 1, 2, 3, and 4 of chip U1 are connected to the negative terminals of LEDs L1, L2, L3, and L4, respectively. The positive terminals of LEDs L1, L2, L3, and L4 are connected to one end of resistor R6, one end of resistor R7, one end of resistor R8, and one end of resistor R9, respectively. The other ends of resistors R6, R7, R8, and R9 are all connected to the output of the power supply module.

[0041] Pin 5 of chip U1 is connected to one end of relay K1 and one end of resistor R5; pin 6 of chip U1 is connected to one end of relay K2 and one end of resistor R4; pin 7 of chip U1 is connected to one end of relay K3 and one end of resistor R3; pin 8 of chip U1 is connected to one end of relay K4 and one end of resistor R1; the other ends of relays K1, K2, K3, and K4 are all grounded; the other ends of resistors R5, R4, R3, and R1 are all connected to the output terminal of the power supply module.

[0042] Pin 18 of chip U1 is connected to one end of capacitor C3 and one end of crystal oscillator Y1 respectively; pin 19 of chip U1 is connected to one end of capacitor C2 and the other end of crystal oscillator Y1 respectively; pin 20 of chip U1, the other end of capacitor C3 and the other end of capacitor C2 are all grounded.

[0043] In this embodiment, relay K1 represents manual operation of the pitch system and is set to "jog" in the program. When in the off state, the pitch system stops operating; when in the on state, the pitch system operates. Relay K2 represents pitch system open / feed switching and is set to "self-locking" in the program. When in the off state, pressing the "manual operation" button moves the blades in the open direction; when in the on state, pressing the "manual operation" button moves the blades in the feather direction. Relay K3 represents pitch system fast / slow switching and is set to "self-locking" in the program. When in the off state, pressing the "manual operation" button moves the blades slowly; when in the on state, pressing the "manual operation" button moves the blades fast. Relay K4 represents the zeroing execution button. When the "zeroing" button is pressed, the pitch system sets the current blade angle to "0" degrees. LEDs L1, L2, L3, and L4 are indicator lights corresponding to relays K1, K2, K3, and K4, respectively. When an LED is lit, it indicates that the corresponding relay is engaged.

[0044] like Figure 3 As shown, the Bluetooth module includes a BCM chip. The TX and RX pins of the BCM chip are connected to pins 11 and 10 of chip U1, respectively. The PIO11 pin of the BCM chip is connected to one end of switch S6 and grounding resistor R21, respectively. The other end of switch S6 is connected to a 3.3V voltage. The PIO8 pin of the BCM chip is connected to the positive terminal of LED D6 through resistor R11. The negative terminal of LED D6 is grounded.

[0045] In this embodiment, switch S6 is the Bluetooth module reset button. Pressing switch S6 illuminates LED D6, indicating a successful reset. LED D7 is the Bluetooth module's power indicator; LED D7 illuminating indicates that the Bluetooth module is operating normally. Figure 3 The IC1 section of the circuit is part of the power supply module, used to provide 3.3V voltage to the BCM chip. The BCM chip is a series of Bluetooth chips, and although the specific models of these chips are different, they are all suitable for this device, and will not be described in detail here.

[0046] like Figure 4 As shown, the control module includes a driver enable switch S1, a manual run switch S2, a manual forward / reverse switch S3, a manual fast / slow speed switch S4, and a manual zeroing switch S5.

[0047] The driver enable switch S1 includes switches a and b connected in parallel. One end of switches a and b is connected to the 24V positive output terminal of the power supply module. The other end of switch a is connected to one end of the manual operation switch S2, one end of the manual forward / reverse switch S3, one end of the manual fast / slow speed switch S4, and one end of the manual zeroing switch S5, respectively. The other end of switch b is connected to the positive terminal of diode D1 and the 24V negative output terminal of the power supply module, respectively. The negative terminal of diode D1 is connected to the driver enable signal input terminal of the wind turbine pitch control unit.

[0048] The other end of the manual operation switch S2 is connected to the manual operation signal input terminal of the wind turbine pitch control unit; the on / off state of the manual operation switch S2 is controlled by relay K1.

[0049] The other end of the manual forward / reverse switch S3 is connected to the manual forward / reverse signal input terminal of the wind turbine pitch control unit; the on / off state of the manual forward / reverse switch S3 is controlled by relay K2.

[0050] The other end of the manual fast / slow speed switch S4 is connected to the manual fast / slow speed signal input terminal of the wind turbine pitch control unit; the on / off state of the manual fast / slow speed switch S4 is controlled by relay K3.

[0051] The other end of the manual zero-calibration switch S5 is connected to the manual zero-calibration signal input terminal of the wind turbine pitch control unit; the on / off state of the manual zero-calibration switch S5 is controlled by relay K4.

[0052] The interface module is an aviation connector.

[0053] like Figure 5 As shown, this device (i.e., the wireless Bluetooth variable pitch manual control box) also includes a box body, and the microcontroller, Bluetooth module, power supply module and control circuit are all housed inside the box body. The dimensions of the box body are 80mm×50mm×50mm.

[0054] In one embodiment of this utility model, the microcontroller program is based on the Keil4 platform and programmed in C language to realize serial port interrupt communication and instruction parsing;

[0055] like Figure 6As shown, the APP on the mobile terminal (phone) is developed based on the Android platform and includes functions such as pitch control, zeroing, and status monitoring. The interface is simple and intuitive.

[0056] The working principle of this device is as follows:

[0057] (1) Operators send control commands (such as pitch angle adjustment and zeroing) via mobile APP;

[0058] (2) The Bluetooth module receives instructions and transmits them to the microcontroller;

[0059] (3) After the microcontroller parses the instructions, it drives the pitch actuator to adjust the blade angle.

[0060] (4) Real-time status (such as blade angle and pitch speed) is fed back to the nacelle cabinet panel for display.

[0061] In the actual implementation process, the serial communication protocol design between the Bluetooth module and the microcontroller was optimized:

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[0068] Based on the above code, the microcontroller can receive and process instructions, and then implement pitch control operation through the control circuit.

[0069] In practical implementation, this device can also add a timeout mechanism to prevent incomplete data frames. It can also support continuous transmission of multiple frames. Furthermore, it can increase the communication rate (by setting the baud rate to 115200).

[0070] In the manufacturing process, high-density PCB design can be used to reduce circuit board area. Surface mount components (such as SMD resistors and capacitors) can be used instead of through-hole components. Three-dimensional stacking is possible: circuit boards, batteries, and mechanical components are stacked in layers to make full use of space. Lightweight design is possible: lightweight materials (aluminum alloys, engineering plastics) are used to make the casing and mechanical components, reducing material usage while maintaining strength. Structural optimization is possible: hollow designs are used to reduce unnecessary weight, and topology optimization techniques are used to optimize the mechanical structure.

[0071] In summary, this invention improves portability and security by replacing wired connections with wireless communication; it simplifies the operation process by issuing commands through a mobile terminal, making the operation intuitive; and it can effectively reduce tool costs and improve work efficiency.

Claims

1. A manual pitch control device for wind turbines based on wireless transmission technology, characterized in that, It includes a microcontroller, Bluetooth module, power supply module, control circuit, interface module, and mobile terminal; The microcontroller communicates with the mobile terminal via a Bluetooth module; The power supply module is connected to the Bluetooth module, the microcontroller, and the control circuit. The microcontroller is connected to the control circuit; The control circuit is connected to the wind turbine pitch control unit via an interface module.

2. The wind turbine manual pitch control device based on wireless transmission technology according to claim 1, characterized in that, The microcontroller includes an AT89S51 chip U1. Pins 31 and 40 of chip U1 are connected to the output of the power supply module. Pin 9 of chip U1 is connected to the negative terminal of polarized capacitor C1 and grounding resistor R2. The positive terminal of polarized capacitor C1 is connected to the output of the power supply module. Pins 1, 2, 3, and 4 of chip U1 are connected to the negative terminals of LEDs L1, L2, L3, and L4, respectively. The positive terminals of LEDs L1, L2, L3, and L4 are connected to one end of resistors R6, R7, R8, and R9, respectively. The other ends of resistors R6, R7, R8, and R9 are all connected to the output of the power supply module. Pin 5 of chip U1 is connected to one end of relay K1 and one end of resistor R5; pin 6 of chip U1 is connected to one end of relay K2 and one end of resistor R4; pin 7 of chip U1 is connected to one end of relay K3 and one end of resistor R3; pin 8 of chip U1 is connected to one end of relay K4 and one end of resistor R1; the other ends of relays K1, K2, K3, and K4 are all grounded; the other ends of resistors R5, R4, R3, and R1 are all connected to the output terminal of the power supply module. Pin 18 of chip U1 is connected to one end of capacitor C3 and one end of crystal oscillator Y1 respectively; pin 19 of chip U1 is connected to one end of capacitor C2 and the other end of crystal oscillator Y1 respectively; pin 20 of chip U1, the other end of capacitor C3 and the other end of capacitor C2 are all grounded.

3. The wind turbine manual pitch control device based on wireless transmission technology according to claim 2, characterized in that, The Bluetooth module includes a BCM chip. The TX and RX pins of the BCM chip are connected to pins 11 and 10 of chip U1, respectively. The PIO11 pin of the BCM chip is connected to one end of switch S6 and grounding resistor R21. The other end of switch S6 is connected to a 3.3V voltage. The PIO8 pin of the BCM chip is connected to the positive terminal of LED D6 through resistor R11. The negative terminal of LED D6 is grounded.

4. The wind turbine manual pitch control device based on wireless transmission technology according to claim 2, characterized in that, The control circuit includes a driver enable switch S1, a manual run switch S2, a manual forward / reverse switch S3, a manual fast / slow speed switch S4, and a manual zeroing switch S5. The driver enable switch S1 includes switches a and b connected in parallel. One end of switches a and b is connected to the 24V positive output terminal of the power supply module. The other end of switch a is connected to one end of the manual operation switch S2, one end of the manual forward / reverse switch S3, one end of the manual fast / slow speed switch S4, and one end of the manual zeroing switch S5, respectively. The other end of switch b is connected to the positive terminal of diode D1 and the 24V negative output terminal of the power supply module, respectively. The negative terminal of diode D1 is connected to the driver enable signal input terminal of the wind turbine pitch control unit. The other end of the manual operation switch S2 is connected to the manual operation signal input terminal of the wind turbine pitch control unit; the on / off state of the manual operation switch S2 is controlled by relay K1. The other end of the manual forward / reverse switch S3 is connected to the manual forward / reverse signal input terminal of the wind turbine pitch control unit; the on / off state of the manual forward / reverse switch S3 is controlled by relay K2. The other end of the manual fast / slow speed switch S4 is connected to the manual fast / slow speed signal input terminal of the wind turbine pitch control unit; the on / off state of the manual fast / slow speed switch S4 is controlled by relay K3. The other end of the manual zero-calibration switch S5 is connected to the manual zero-calibration signal input terminal of the wind turbine pitch control unit; the on / off state of the manual zero-calibration switch S5 is controlled by relay K4.

5. The wind turbine manual pitch control device based on wireless transmission technology according to claim 1, characterized in that, The interface module is an aviation connector.

6. The wind turbine manual pitch control device based on wireless transmission technology according to claim 1, characterized in that, The microcontroller, Bluetooth module, power supply module, and control circuit are all housed inside the box, which measures 80mm × 50mm × 50mm.

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