Wireless remote control device for portable electric lift

Abstract

The utility model relates to a wireless remote control device for portable electric lift, including transmitting part and receiving part, CPU processor I in transmitting part is connected button and indicating lamp module, wireless communication module I and boost module respectively, boost module connects battery, CPU processor II in receiving part is connected isolation power module, motor drive and protection module, wireless communication module II and state and trouble display module respectively, motor drive and protection module are connected with the brushless DC motor in portable electric lift, isolation power module connects lithium cell, and all are equipped with built -in PCB antenna in wireless communication module I and wireless module II, and state and trouble display module connects 2.4 inch OLED display screen. The utility model has the beneficial effect that: to brushless DC motor adopts FOC magnetic field orientation control form, and control precision is high, and the anti -interference ability is strong, can work stably in 1000KV strong electric field.

Description

Technical Field

[0001] This utility model belongs to the field of wireless remote control technology, and in particular relates to a wireless remote control device for portable electric lifts. Background Technology

[0002] In the construction, operation, and maintenance of power lines and substations, it is often necessary to climb towers and ascend overhead lines. Traditionally, this is done manually on foot, which is physically demanding, inefficient, and relatively unsafe. A small number of companies are using electric lifts, typically used for rescue and disaster relief, to replace the traditional foot-only method. These lifts are primarily used to transport personnel or materials to work areas on overhead power lines, and there is significant demand for them in power construction, maintenance, testing, material transport, and rescue applications. When used for transporting materials, conventional manual operation is inconvenient. These lifts typically use permanent magnet synchronous motors, and the traditional control method uses square wave control, which suffers from poor control accuracy, excessive heat generation, and high noise levels.

[0003] In the power industry, electric lifts need to operate in 1000KV high-voltage electric fields. Entering and exiting these fields causes discharges and generates strong electromagnetic interference to the remote control device. Traditional wireless transmission control methods are highly susceptible to interference, leading to serious consequences such as signal transmission interruptions, system crashes, or equipment malfunctions. Therefore, existing electric lifts are generally unsuitable for the strong electric field environment of high-altitude power operations, hindering their expanded application and limiting on-site work efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a wireless remote control device for portable electric lifts, which overcomes the shortcomings of the prior art, optimizes the circuit structure, improves the adaptability to strong electric fields, enables the brushless DC motor on the portable electric lift to run smoothly, has strong anti-interference ability, improves operational safety, and has output protection and fault indication functions, and is used in conjunction with portable electric lifts.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] A wireless remote control device for a portable electric lift includes a transmitting section and a receiving section. The transmitting section includes a button and indicator light module, a wireless communication module I, a CPU processor I, a battery, and a boost module. The CPU processor I is connected to the button and indicator light module, the wireless communication module I, and the boost module, and the boost module is connected to the battery. The receiving section includes a CPU processor II, an isolated power supply module, a motor drive and protection module, the wireless communication module II, a status and fault display module, and a lithium battery. The CPU processor II is connected to the isolated power supply module, the motor drive and protection module, the wireless communication module II, and the status and fault display module. The motor drive and protection module is connected to the brushless DC motor inside the portable electric lift. The isolated power supply module is connected to the lithium battery. Both the wireless communication module I and the wireless module II have built-in PCB antennas. The status and fault display module is connected to a 2.4-inch OLED display screen. The compatible portable electric lift model is ALBDSZ-SZ.

[0007] Furthermore, the main chip model of both CPU processor I and CPU processor II is STM32L31F6P6.

[0008] Furthermore, the boost module includes an input filter circuit, an inductor energy storage circuit, and an output filter circuit, and the main chip of the boost module is a TPS62140.

[0009] Furthermore, both wireless communication module I and wireless communication module II include input filtering and energy storage circuits, with chip model WH-L101-L.

[0010] Furthermore, the isolated power supply module includes a surge protection circuit, an energy storage filter circuit, a transformer isolation circuit, and a low-dropout conversion circuit, and has two voltage levels of output: +5V and +3.3V. The main control chip models are WRB2405S-3WR2 and AMS1117.

[0011] Furthermore, the motor drive and protection module includes a MOSFET drive circuit, a bootstrap voltage boost circuit, an energy storage and filtering circuit, and a phase current sampling circuit, with control chips being IR2106, IRF341, and INA180A21DBVR.

[0012] Furthermore, the chip model of the status and fault display module is SER2.42-B.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1) The brushless DC motor adopts FOC field-oriented control, which has higher control accuracy, less heat generation, less noise and integrated overload and stall protection functions compared with traditional control methods.

[0015] 2) It has strong anti-interference capabilities and can work stably in a 1000KV strong electric field. The wireless signal adopts high anti-interference LORA modulation and built-in forward error correction (FEC) verification. Frequency hopping disperses the signal to multiple frequency points. Interference on a single channel only affects part of the data. The complete information can be recovered through forward error correction (FEC) to ensure reliable communication.

[0016] 3) It has high reliability and stability. The receiver adopts a clock monitoring system. When the CPU main clock fails, the CPU will immediately switch the internal clock to ensure stable system operation and run relevant protection operations.

[0017] 4) The OLED screen in the status and fault display module of the receiver can display the current operating status and fault records of the system, which facilitates quick maintenance work based on the prompts and improves work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic block diagram of the transmitting circuit in an embodiment of the present invention;

[0019] Figure 2 This is a schematic block diagram of the receiving end circuit in an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the boost module in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the circuit principle of the buttons and indicator lights in the embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the CPU processor I circuit in an embodiment of this utility model;

[0023] Figure 6 This is a schematic diagram of the wireless module circuit in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the isolation power supply module in an embodiment of this utility model;

[0025] Figure 8 This is a schematic diagram of the motor drive and protection module in an embodiment of this utility model;

[0026] Figure 9 This is a schematic diagram of the CPU processor II circuit in an embodiment of this utility model;

[0027] Figure 10 This is a schematic diagram of the status and fault display circuit in an embodiment of this utility model. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the specific embodiments used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some embodiments of this utility model. For those skilled in the art, other specific embodiments can be obtained based on these specific embodiments without creative effort.

[0030] The components of the present invention described and shown in the specific embodiments herein can be arranged and designed in numerous different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the claimed invention, but only to illustrate selected embodiments of the invention.

[0031] See Figure 1-10 This is a schematic diagram of an embodiment of the wireless remote control device for a portable electric lift, comprising a transmitting section and a receiving section. The transmitting section includes a button and indicator light module, a wireless communication module I, a CPU processor I, a battery, and a boost module. The CPU processor I is connected to the button and indicator light module, the wireless communication module I, and the boost module, and the boost module is connected to the battery. The receiving section includes a CPU processor II, an isolated power supply module, a motor drive and protection module, a wireless communication module II, a status and fault display module, and a lithium battery. The CPU processor II is connected to the isolated power supply module, the motor drive and protection module, the wireless communication module II, and the status and fault display module. The motor drive and protection module is connected to the brushless DC motor inside the portable electric lift. The isolated power supply module is connected to the lithium battery. Both the wireless communication module I and the wireless module II have built-in PCB antennas. The status and fault display module is connected to a 2.4-inch OLED display screen. The compatible portable electric lift model is ALBDSZ-SZ, manufactured by Anshan Electric Machinery Co., Ltd.

[0032] In this embodiment, the main chip of both CPU processor I and CPU processor II is STM32L31F6P6. The boost module includes an input filter circuit, an inductor energy storage circuit, and an output filter circuit; the main chip of the boost module is TPS62140. Both wireless communication module I and wireless communication module II include input filtering and energy storage circuits; the chip model is WH-L101-L. The isolated power supply module includes a surge protection circuit, an energy storage filter circuit, a transformer isolation circuit, and a low-dropout conversion circuit, with +5V and +3.3V output voltage levels; the main control chips are WRB2405S-3WR2 and AMS1117. The motor drive and protection module includes a MOSFET drive circuit, a bootstrap boost circuit, an energy storage and filtering circuit, and a phase current sampling circuit; the control chips are IR2106, IRF341, and INA180A21DBVR. The status and fault display module uses a SER2.42-B chip. The button and indicator module has three function buttons for rising, speed adjustment, and falling, and two indicator lights for running and speed.

[0033] The transmitting section is powered by two 1.5V batteries, which boost the voltage from 3V to 3.3V via a boost module to supply power to CPU processor I. The buttons use a cyclic scanning method. When CPU processor I detects an up or down button being pressed, it encodes the data and adds redundant check bits to the raw data via wireless communication module I. The transmitting and receiving sections synchronously switch channels, and frequency hopping disperses the signal across multiple frequency points. Interference from a single channel only affects a portion of the data, and complete information can be recovered through forward error correction (FEC). This LORA modulation technology possesses superior anti-interference capabilities.

[0034] When the wireless communication module II detects a signal, address matching and data ready signals notify the CPU processor II that an address and data packet have been received. The CPU processor II reads the data and parses the key code. The CPU processor II has a clock monitoring system; when the main clock of the CPU processor II fails, it immediately switches its internal clock to ensure stable system operation. Based on the received coded information, the CPU processor II generates a three-phase sinusoidal voltage using Space Vector Pulse Width Modulation (SVPWM), which drives the brushless DC motor smoothly through the motor drive and protection module, providing overload and stall protection. The isolated power supply module uses a 24V DC wide-range power supply with a voltage fluctuation range of 18V to 36V. Surge and spike pulse protection is achieved through varistors and TVS diodes. This power supply, after processing by the isolated power supply module, powers the CPU processor II. The 2.4-inch OLED screen has low power consumption and no backlight, clearly displaying the motor's operating status and faults, facilitating maintenance and troubleshooting.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wireless remote control device for a portable electric lift, characterized in that, The device includes a transmitting section and a receiving section. The transmitting section includes a button and indicator light module, a wireless communication module I, a CPU processor I, a battery, and a boost module. The CPU processor I is connected to the button and indicator light module, the wireless communication module I, and the boost module, and the boost module is connected to the battery. The receiving section includes a CPU processor II, an isolated power supply module, a motor drive and protection module, a wireless communication module II, a status and fault display module, and a lithium battery. The CPU processor II is connected to the isolated power supply module, the motor drive and protection module, the wireless communication module II, and the status and fault display module. The motor drive and protection module is connected to the brushless DC motor inside the portable electric lift. The isolated power supply module is connected to the lithium battery. Both the wireless communication module I and the wireless module II have built-in PCB antennas. The status and fault display module is connected to a 2.4-inch OLED display screen. The compatible portable electric lift model is ALBDSZ-SZ.

2. The wireless remote control device for a portable electric lift according to claim 1, characterized in that, The main chip model of both CPU processor I and CPU processor II is STM32L31F6P6.

3. The wireless remote control device for a portable electric lift according to claim 1, characterized in that, The boost module includes an input filter circuit, an inductor energy storage circuit, and an output filter circuit. The main chip of the boost module is a TPS62140.

4. The wireless remote control device for a portable electric lift according to claim 1, characterized in that, Both wireless communication module I and wireless communication module II include input filtering and energy storage circuits, and the chip model is WH-L101-L.

5. The wireless remote control device for a portable electric lift according to claim 1, characterized in that, The isolated power supply module includes a surge protection circuit, an energy storage filter circuit, a transformer isolation circuit, and a low-dropout conversion circuit. It has two voltage levels of output: +5V and +3.3V. The main control chip models are WRB2405S-3WR2 and AMS1117.

6. The wireless remote control device for a portable electric lift according to claim 1, characterized in that, The motor drive and protection module includes a MOSFET drive circuit, a bootstrap voltage boost circuit, an energy storage and filtering circuit, and a phase current sampling circuit. The control chips are IR2106, IRF341, and INA180A21DBVR.

7. The wireless remote control device for a portable electric lift according to claim 1, characterized in that, The chip model of the status and fault display module is SER2.42-B.

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