Wind turbine climbing device bluetooth control switch and control method

Abstract

The application discloses a wind turbine climbing device Bluetooth control switch and a control method, which comprises a Bluetooth control switch host, a mobile control terminal and a safety interface module. The host is installed in the climbing device control box and comprises a low-power Bluetooth communication module, a main controller, an isolated input acquisition unit, an isolated output driving unit and a safety relay unit. The main controller receives the control command sent by the mobile terminal after identity authentication, and drives the direction relay to control the climbing device to run through the isolated output driving unit. The main controller also executes the keep-alive frame monitoring. When a predetermined number of keep-alive frames are continuously lost, the Bluetooth signal strength is lower than the set threshold or the link is disconnected, the output of all direction relays is immediately disconnected to stop the climbing device. The application realizes the authorized control of the climbing device by the maintenance personnel at any position of the tower drum, and prevents the unauthorized operation and the continuous running risk caused by the communication interruption through the multiple identity authentication and the disconnection protection mechanism.

Description

Technical Field

[0001] This document relates to the field of non-crawler control technology, and in particular to a Bluetooth control switch and control method for a non-crawler wind turbine. Background Technology

[0002] Existing non-climbing devices mainly rely on wired control boxes fixed to the device body for control. Operators must operate the device at its stopping position. When personnel are at the bottom of the tower, the nacelle platform, or the middle platform of the tower while the non-climbing device is stopped at the opposite end, another person is needed to assist or climb to the control position, resulting in low maintenance efficiency.

[0003] While some solutions employ wireless communication technologies like LoRa for remote control of the climber, such as Xu Pengcheng et al.'s "Control System Design of a Climber-Free Wind Turbine Tower Based on STM32 and LoRa," their communication methods only achieve one-way remote control switching transmission, lacking operator authentication and authorization mechanisms, resulting in a high risk of unauthorized personnel accidentally triggering the system. Furthermore, existing wireless control solutions lack communication interruption protection mechanisms for manned lifting equipment. When the wireless signal experiences multipath attenuation or a short-term interruption within the steel tower, the climber may continue operating, posing a significant safety hazard. In addition, existing solutions lack two-way confirmation of the climber's limit state, emergency stop state, and braking feedback, leading to insufficient control reliability. Summary of the Invention

[0004] This invention provides a Bluetooth control switch and control method for a wind turbine generator that is free from crawling, aiming to solve the above-mentioned problems.

[0005] According to an embodiment of the present invention, a Bluetooth control switch for a wind turbine generator without crawling is provided, comprising: The Bluetooth control switch host is installed in the crawler-free control box. The Bluetooth control switch host includes a low-power Bluetooth communication module, a main controller, an isolated input acquisition unit, an isolated output drive unit, and a safety relay unit. A mobile control terminal is used to establish a Bluetooth communication connection with the Bluetooth control switch host and send control commands to it. The security interface module is used to electrically connect the Bluetooth control switch host to the security interface terminal block of the original control box of the crawl-free device; The main controller is configured to perform the following operations: The control command sent by the mobile control terminal is received through the low-power Bluetooth communication module. The control command includes at least an uplink command, a downlink command, and a stop command. When the control command is the uplink command or the downlink command, the corresponding direction relay output is driven by the isolation output drive unit to control the uplink or downlink of the crawler. The main controller authenticates the mobile control terminal and executes the control command after successful authentication. The main controller also performs hold frame monitoring. When a predetermined number of hold frames are lost consecutively, the Bluetooth signal strength is lower than a set threshold, or the Bluetooth link is disconnected, the output of all directional relays is immediately disconnected to stop the crawler.

[0006] According to an embodiment of the present invention, a Bluetooth control method for a wind turbine generator without crawling is provided, comprising: The mobile control terminal establishes a Bluetooth communication connection with the Bluetooth control switch host, which is installed in the crawler-free control box and includes a low-power Bluetooth communication module, a main controller, an isolated input acquisition unit, an isolated output drive unit, and a safety relay unit. The main controller performs identity authentication on the mobile control terminal; After successful authentication, the main controller receives control commands sent by the mobile control terminal through the Bluetooth Low Energy communication module. The control commands include at least an uplink command, a downlink command, and a stop command. When the control command is the uplink command or the downlink command, the main controller drives the corresponding direction relay output through the isolation output drive unit to control the uplink or downlink of the crawler. The main controller performs hold frame monitoring. When a predetermined number of hold frames are lost consecutively, the Bluetooth signal strength is lower than a set threshold, or the Bluetooth link is disconnected, the output of all directional relays is immediately disconnected to stop the crawler.

[0007] Using this invention, maintenance personnel can authorize and control the climb-free device from the tower base, nacelle platform, or intermediate tower platform, retrieving or recalling the device without additional climbing, significantly improving maintenance efficiency. Multiple verifications effectively prevent unauthorized terminal connections, replay attacks, and forged commands. Employing mechanisms such as inching hold frames, communication timeout shutdown, RSSI distance constraints, and link disconnection shutdown, the climb-free device defaults to stopping rather than remaining operational when the Bluetooth signal is interrupted, avoiding the safety risk of device loss of control during wireless communication packet loss. Both uplink and downlink have software and hardware interlocks to prevent directional relays from malfunctioning simultaneously. The Bluetooth control circuit is isolated from the original climb-free device safety chain, ensuring that existing safety protections such as emergency stop, limit switches, fall protection, and braking are not bypassed. When the host power fails or malfunctions, the output contacts release, and the device is in a safe stop state.

[0008] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in one or more embodiments of this specification or in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A schematic diagram of the Bluetooth control switch for the wind turbine's non-crawling device, as described in an embodiment of the invention; Figure 2 This is a flowchart of a Bluetooth control method for a wind turbine generator that is not crawlable, according to an embodiment of the present invention. Detailed Implementation

[0011] To enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this document.

[0012] Device Examples According to an embodiment of the present invention, a Bluetooth control switch for a wind turbine generator without the need for crawling is provided. Figure 1 This is a schematic diagram of the Bluetooth control switch for the wind turbine's non-crawler device, according to an embodiment of the present invention. Figure 1 As shown, the Bluetooth control switch for the wind turbine's crawler-free device in this embodiment of the invention specifically includes: The Bluetooth control switch host is installed in or near the original control box of the climb-free device, preferably in the protective box on the upper part of the climb-free device's electrical control box inside the tower.

[0013] The Bluetooth control switch host includes a low-power Bluetooth communication module, a main controller, an isolated input acquisition unit, an isolated output drive unit, a safety relay unit, a power conversion unit, a non-volatile storage unit, an audible and visual prompt unit, and an antenna.

[0014] The low-power Bluetooth communication module adopts the BLE 5.0 or higher protocol and supports GATT service, link layer encryption, whitelist connection, adjustable transmit power and RSSI sampling.

[0015] The main controller is used to perform pairing authentication, command parsing, status judgment, interlocking logic, watchdog protection, and fault logging. It is preferably an STM32 series microcontroller.

[0016] The isolated input acquisition unit is used to acquire upper limit signal, lower limit signal, emergency stop circuit signal, local operation box occupancy signal, brake release feedback signal, motor operation feedback signal and safety door closing feedback signal.

[0017] The isolated output driver unit is used to output uplink control signals, downlink control signals, and stop control signals.

[0018] The safety relay unit uses normally open contact output, so that the Bluetooth control switch host will be disconnected by default when power is lost or malfunction occurs, without changing the original crawler's emergency stop, limit and braking safety chain.

[0019] The antenna adopts an external or semi-external structure and is installed on the non-metallic window of the control box, the tower platform, or the guide rail side of the climber. The antenna feed line adopts a shielded cable and is equipped with a waterproof connector to adapt to the metal enclosed environment of the wind turbine tower.

[0020] The mobile control terminal is used to establish a Bluetooth communication connection with the Bluetooth control switch host and send control commands to it.

[0021] The mobile control terminal can be a mobile phone, tablet, dedicated Bluetooth remote control, or a badge-style controller equipped with a Bluetooth module carried by maintenance personnel. The mobile control terminal has a control application installed to perform identity authentication, command sending, status query, and log reading functions.

[0022] The security interface module is used to electrically connect the Bluetooth control switch host to the security interface terminal block of the original control box of the crawl-free device.

[0023] The safety interface terminal block includes at least a power terminal, an uplink input terminal, a downlink input terminal, a stop input terminal, an upper limit feedback terminal, a lower limit feedback terminal, an emergency stop feedback terminal, a braking feedback terminal, a motor running feedback terminal, and a local occupancy feedback terminal.

[0024] The uplink input terminal and the downlink input terminal are respectively connected to the original uplink control circuit and downlink control circuit of the crawler-free device. If the original control box is in the form of push-button contacts, the uplink output contacts are connected in parallel with the original uplink push-button contacts, and the downlink output contacts are connected in parallel with the original downlink push-button contacts; if the original control box provides PLC terminals, the uplink input terminal, downlink input terminal, and stop input terminal of the PLC are connected in a dry contact manner.

[0025] The main controller is configured to perform the following operations: The control commands sent by the mobile control terminal are received through the low-power Bluetooth communication module. The control commands include at least an uplink command, a downlink command, and a stop command.

[0026] The control commands include a jog hold command and a short-time automatic run command. The jog hold command requires the mobile control terminal to continuously send hold frames at a period of 200 milliseconds to 500 milliseconds. When the main controller loses 2 to 3 hold frames consecutively, the RSSI falls below a set threshold, the link is disconnected, or the mobile control terminal releases the button, it immediately disconnects the direction relay and outputs a stop.

[0027] The default duration of the short-term automatic operation command is no more than 5 to 15 seconds, and execution must meet the following conditions before execution: emergency stop not triggered, limit switch not triggered, braking feedback normal, local handle not occupied, and speed feedback normal. It will automatically stop after exceeding the specified duration or reaching the limit. The short-term automatic operation command is applicable to unloaded recalls or low-risk position adjustments. For manned operation, only the inching hold mode is allowed, and the up or down button on the terminal interface must be continuously pressed.

[0028] The main controller authenticates the mobile control terminal and executes the control command after successful authentication.

[0029] The authentication mechanism includes a tiered authorization mechanism: the Bluetooth control switch host is programmed with a unique device identifier, a random seed, and a root key digest at the factory; during installation and debugging, the administrator terminal completes the initial binding and generates a device key specific to the crawler, and writes the administrator role, maintenance personnel role, and temporary authorizer role, along with their corresponding terminal identifiers, into the whitelist of the Bluetooth control switch host; when the mobile control terminal initiates a connection request to the Bluetooth control switch host, the main controller determines whether the mobile control terminal's address, certificate digest, or dynamic token is in the whitelist, and if authentication fails, only the device number and fault message are allowed to be read, while control feature values ​​are not accessed.

[0030] After successful authentication, the mobile control terminal and the Bluetooth control switch host perform a challenge-response authentication: the main controller generates a first random number and sends it to the mobile control terminal; the mobile control terminal uses a session key to calculate a first message authentication code using the first random number, terminal number, first timestamp, and command counter, and returns it to the main controller; after verifying the first message authentication code, the main controller generates a second random number and returns it to the mobile control terminal; after verifying the second message authentication code returned by the main controller, the mobile control terminal establishes the current session key. Each subsequent control command includes fields for command type, target direction, hold time, command sequence number, terminal role, timestamp, RSSI lower limit, and message authentication code. The main controller only executes control commands with incrementing command sequence numbers, timestamps within the allowed window, correct message authentication codes, and satisfactory role permissions.

[0031] The control data frame format is as follows: 2-byte frame header, 1-byte protocol version, 4-byte device number, 4-byte terminal number, 1-byte command type, 1-byte direction, 2-byte hold time, 4-byte command sequence number, 4-byte timestamp, 1-byte RSSI threshold, 2-byte status mask, and 16-byte MAC. Command types include connection commands, authentication commands, uplink hold commands, downlink hold commands, stop commands, no-load recall commands, status query commands, log read commands, and management configuration commands. Each bit in the status mask represents the upper limit, lower limit, emergency stop, local occupancy, brake release, motor operation, power undervoltage, relay sticking, and communication quality anomaly, respectively.

[0032] When the control command is the uplink command or the downlink command, the corresponding direction relay output is driven by the isolation output drive unit to control the uplink or downlink of the crawler.

[0033] The isolated output drive unit includes an uplink relay and a downlink relay, and a double interlock is provided between the uplink relay and the downlink relay.

[0034] The hardware interlock is as follows: the normally closed auxiliary contact of the up relay is connected in series with the drive circuit of the down relay, and the normally closed auxiliary contact of the down relay is connected in series with the drive circuit of the up relay.

[0035] The software interlock is as follows: the main controller only allows one of three mutually exclusive output states within the same control cycle: uplink output state, downlink output state, and stop output state. Any command that contains both uplink and downlink meanings is judged as an illegal command and immediately enters the stop output state.

[0036] The main controller executes a security state machine. The security state machine includes: In idle state, all relays are released; Authentication status only processes pairing and challenge responses; Standby state, allowing status queries and control preparation; In the upward operation state, only the upward relay is allowed to engage; In downlink operation, only the downlink relay is allowed to engage; In fault-stop mode, all outputs in all directions are released and fault codes are recorded. Local priority mode is entered when an emergency stop, local handle, or control box button is active.

[0037] The state transition conditions are as follows: authentication failure leads to the idle state; successful authentication leads to the standby state; receiving a valid uplink command and the upper limit switch is not triggered leads to the uplink running state; receiving a valid downlink command and the lower limit switch is not triggered leads to the downlink running state; any hold frame timeout, insufficient RSSI, limit switch triggering, emergency stop triggering, abnormal braking feedback, abnormal motor feedback, or abnormal relay feedback leads to the fault stop state; when local control is occupied, it enters the local priority state, and returns to the standby state after local control is released and re-authenticated.

[0038] The isolated input acquisition unit acquires the upper limit signal, lower limit signal, emergency stop circuit signal, local operation box occupancy signal, brake release feedback signal, motor operation feedback signal, and safety door closing feedback signal.

[0039] The main controller continuously verifies the upper limit signal, the lower limit signal, the emergency stop circuit signal, the brake release feedback signal, and the motor operation feedback signal before each output direction relay and during operation. If any signal is abnormal, the output is stopped immediately.

[0040] The safety priorities, from highest to lowest, are: mechanical emergency stop and original safety chain, upper / lower limit switches, brake feedback, local wired control box, Bluetooth stop command, Bluetooth uplink command, and Bluetooth downlink command. The Bluetooth control switch must not bypass the original emergency stop and limit safety chain. When local control and Bluetooth control occur simultaneously, local control takes priority, and Bluetooth directional output is disabled.

[0041] The main controller imposes distance constraints based on RSSI and connection quality: when RSSI falls below a threshold and persists for more than a set time, it stops executing uplink and downlink commands; when RSSI recovers, the operator must reissue control commands, and operation cannot resume automatically.

[0042] The Bluetooth control switch host also includes a non-volatile storage unit. The main controller writes the terminal number, role, start time, end time, command direction, runtime, limit trigger status, emergency stop trigger status, number of communication interruptions and fault codes for each connection into the non-volatile storage unit.

[0043] The administrator terminal reads the logs in the non-volatile storage unit for tracing operational responsibility and analyzing equipment faults. The main controller periodically self-checks for relay sticking, input acquisition abnormalities, power undervoltage, and memory abnormalities. When relay sticking is detected, the auxiliary contact feedback determines that the output contact has not been released as commanded, and prohibits power-on operation again.

[0044] Using this invention, maintenance personnel can authorize and control the climb-free device from the tower base, nacelle platform, or intermediate tower platform, retrieving or recalling the device without additional climbing, significantly improving maintenance efficiency. Multiple verifications effectively prevent unauthorized terminal connections, replay attacks, and forged commands. Employing mechanisms such as inching hold frames, communication timeout shutdown, RSSI distance constraints, and link disconnection shutdown, the climb-free device defaults to stopping rather than remaining operational when the Bluetooth signal is interrupted, avoiding the safety risk of device loss of control during wireless communication packet loss. Both uplink and downlink have software and hardware interlocks to prevent directional relays from malfunctioning simultaneously. The Bluetooth control circuit is isolated from the original climb-free device safety chain, ensuring that existing safety protections such as emergency stop, limit switches, fall protection, and braking are not bypassed. When the host power fails or malfunctions, the output contacts release, and the device is in a safe stop state.

[0045] Method Implementation Examples According to an embodiment of the present invention, a Bluetooth control method for wind turbine generators without the need for crawling is provided. Figure 2 This is a flowchart of a wind turbine non-crawler Bluetooth control method according to an embodiment of the present invention. Figure 2 As shown, the Bluetooth control method for wind turbine generators without crawling, according to an embodiment of the present invention, specifically includes: The mobile control terminal establishes a Bluetooth communication connection with the Bluetooth control switch host, which is installed in the crawler-free control box and includes a low-power Bluetooth communication module, a main controller, an isolated input acquisition unit, an isolated output drive unit, and a safety relay unit. The main controller performs identity authentication on the mobile control terminal; After successful authentication, the main controller receives control commands sent by the mobile control terminal through the Bluetooth Low Energy communication module. The control commands include at least an uplink command, a downlink command, and a stop command. When the control command is the uplink command or the downlink command, the main controller drives the corresponding direction relay output through the isolation output drive unit to control the uplink or downlink of the crawler. The main controller performs hold frame monitoring. When a predetermined number of hold frames are lost consecutively, the Bluetooth signal strength is lower than a set threshold, or the Bluetooth link is disconnected, the output of all directional relays is immediately disconnected to stop the crawler.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Bluetooth control switch for a wind turbine generator without the need for crawling, characterized in that, include: The Bluetooth control switch host is installed in the crawler-free control box. The Bluetooth control switch host includes a low-power Bluetooth communication module, a main controller, an isolated input acquisition unit, an isolated output drive unit, and a safety relay unit. A mobile control terminal is used to establish a Bluetooth communication connection with the Bluetooth control switch host and send control commands to it. The security interface module is used to electrically connect the Bluetooth control switch host to the security interface terminal block of the original control box of the crawl-free device; The main controller is configured to perform the following operations: The control command sent by the mobile control terminal is received through the low-power Bluetooth communication module. The control command includes at least an uplink command, a downlink command, and a stop command. When the control command is the uplink command or the downlink command, the corresponding direction relay output is driven by the isolation output drive unit to control the uplink or downlink of the crawler. The main controller authenticates the mobile control terminal and executes the control command after successful authentication. The main controller also performs hold frame monitoring. When a predetermined number of hold frames are lost consecutively, the Bluetooth signal strength is lower than a set threshold, or the Bluetooth link is disconnected, the output of all directional relays is immediately disconnected to stop the crawler.

2. The wind turbine non-crawler Bluetooth control switch according to claim 1, characterized in that, The identity authentication includes a tiered authorization mechanism: The Bluetooth control switch host is written with a unique device identifier, random seed, and root key digest at the factory. During installation and debugging, the administrator terminal completes the initial binding and generates a device key dedicated to the crawler. The administrator role, maintenance personnel role, and temporary authorized personnel role, along with their corresponding terminal identifiers, are written into the whitelist of the Bluetooth control switch host. When the mobile control terminal initiates a connection request to the Bluetooth control switch host, the main controller determines whether the address, certificate digest, or dynamic token of the mobile control terminal is in the whitelist. If the authentication fails, only the device number and fault prompt information are allowed to be read, but the control feature value is not opened.

3. The wind turbine non-crawler Bluetooth control switch according to claim 2, characterized in that, After successful authentication, the mobile control terminal and the Bluetooth control switch host perform a challenge-response authentication: The main controller generates a first random number and sends it to the mobile control terminal; The mobile control terminal uses the session key to calculate the first message authentication code using the first random number, the terminal number, the first timestamp, and the command counter, and returns it to the main controller. After the main controller verifies that the first message authentication code passes, it generates a second random number and returns it to the mobile control terminal. After the mobile control terminal verifies the second message authentication code returned by the main controller, it establishes the session key for this session. Each subsequent control command includes fields for command type, target direction, hold time, command sequence number, terminal role, timestamp, RSSI lower limit, and message authentication code. The main controller only executes control commands with incrementing command sequence number, timestamp within the allowed window, correct message authentication code, and satisfactory role permissions.

4. The Bluetooth control switch for the wind turbine generator's non-crawling device according to claim 1, characterized in that, The isolated output drive unit includes an uplink relay and a downlink relay, and a double interlock is provided between the uplink relay and the downlink relay: Hardware interlock: The normally closed auxiliary contact of the up relay is connected in series with the drive circuit of the down relay, and the normally closed auxiliary contact of the down relay is connected in series with the drive circuit of the up relay. Software interlock: The main controller only allows one of three mutually exclusive output states within the same control cycle: uplink output state, downlink output state, and stop output state. Any command that contains both uplink and downlink meanings is judged as an illegal command and immediately enters the stop output state.

5. The Bluetooth control switch for the wind turbine generator's non-crawling device according to claim 1, characterized in that, The control commands include jog hold commands and short-time automatic run commands: The jog hold command requires the mobile control terminal to continuously send hold frames at a period of 200ms to 500ms. When the main controller loses 2 to 3 hold frames in a row, the RSSI is lower than the set threshold, the link is disconnected, or the mobile control terminal releases the button, it immediately disconnects the direction relay and outputs stop. The default duration of the short-term automatic operation command does not exceed 5s to 15s, and before execution, the following conditions must be met: emergency stop not triggered, limit switch not triggered, braking feedback normal, local handle not occupied, and speed feedback normal. It will automatically stop after the duration is exceeded or the limit is reached.

6. The Bluetooth control switch for the wind turbine generator's non-crawling device according to claim 1, characterized in that, The main controller executes a security state machine, which includes: Idle state: All relays are released; Authentication status: Only pairing and challenge response are being processed; Standby status: Allows status queries and control preparation; Upward operation status: Only the upward relay is allowed to engage; Downlink operation status: Only the downlink relay is allowed to engage; Fault Stop Status: All directional outputs are released and fault codes are recorded; Local priority mode: Entered when emergency stop, local handle, or control box button is active; The state transition conditions are as follows: authentication failure leads to the idle state; successful authentication leads to the standby state; receiving a valid uplink command and the upper limit switch is not triggered leads to the uplink running state; receiving a valid downlink command and the lower limit switch is not triggered leads to the downlink running state; any hold frame timeout, insufficient RSSI, limit switch triggering, emergency stop triggering, abnormal braking feedback, abnormal motor feedback, or abnormal relay feedback leads to the fault stop state; when local control is occupied, it enters the local priority state, and returns to the standby state after local control is released and re-authenticated.

7. The Bluetooth control switch for the wind turbine generator's non-crawling device according to claim 1, characterized in that, The isolated input acquisition unit is used to acquire the upper limit signal, lower limit signal, emergency stop circuit signal, local operation box occupancy signal, brake release feedback signal, motor operation feedback signal and safety door closing feedback signal; The main controller continuously verifies the upper limit signal, the lower limit signal, the emergency stop circuit signal, the brake release feedback signal, and the motor operation feedback signal before each output direction relay and during operation. If any signal is abnormal, the output is stopped immediately. The safety priorities, from highest to lowest, are: mechanical emergency stop and original safety chain, upper / lower limit switch, brake feedback, local wired control box, Bluetooth stop command, Bluetooth uplink command, and Bluetooth downlink command; the Bluetooth control switch must not bypass the original emergency stop and limit safety chain; when local control and Bluetooth control occur simultaneously, local control takes priority, and Bluetooth directional output is disabled.

8. The Bluetooth control switch for the wind turbine generator's non-crawling device according to claim 1, characterized in that, The Bluetooth Low Energy communication module adopts BLE 5.0 or higher protocol, supports GATT service, link layer encryption, whitelist connection, adjustable transmit power and RSSI sampling; the antenna of the Bluetooth Low Energy communication module adopts an external structure and is installed on the non-metallic window of the control box, the tower platform or the side of the non-climbing device rail, and the antenna feed line adopts shielded wire and is equipped with waterproof connector; The main controller imposes distance constraints based on RSSI and connection quality: when RSSI falls below a threshold and persists for more than a set time, it stops executing uplink and downlink commands; when RSSI recovers, the operator must reissue control commands, and operation cannot resume automatically.

9. The Bluetooth control switch for the wind turbine generator's non-crawling device according to claim 1, characterized in that, The Bluetooth control switch host also includes a non-volatile storage unit. The main controller writes the terminal number, role, start time, end time, command direction, runtime, limit trigger status, emergency stop trigger status, number of communication interruptions and fault codes for each connection into the non-volatile storage unit. The administrator terminal reads the logs in the non-volatile storage unit to trace operational responsibility and analyze equipment failures; The main controller periodically self-checks for relay sticking, input acquisition abnormalities, power supply undervoltage, and memory abnormalities. When relay sticking is detected, the auxiliary contact feedback determines that the output contact has not been released as commanded, and prohibits power-on operation again.

10. A Bluetooth control method for a wind turbine generator without crawling, characterized in that, include: The mobile control terminal establishes a Bluetooth communication connection with the Bluetooth control switch host, which is installed in the crawler-free control box and includes a low-power Bluetooth communication module, a main controller, an isolated input acquisition unit, an isolated output drive unit, and a safety relay unit. The main controller performs identity authentication on the mobile control terminal; After successful authentication, the main controller receives control commands sent by the mobile control terminal through the Bluetooth Low Energy communication module. The control commands include at least an uplink command, a downlink command, and a stop command. When the control command is the uplink command or the downlink command, the main controller drives the corresponding direction relay output through the isolation output drive unit to control the uplink or downlink of the crawler. The main controller performs hold frame monitoring. When a predetermined number of hold frames are lost consecutively, the Bluetooth signal strength is lower than a set threshold, or the Bluetooth link is disconnected, the output of all directional relays is immediately disconnected to stop the crawler.

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