A wireless remote controller with a protection function

Abstract

The utility model relates to wireless remote control technical field, concretely is a kind of wireless remote control controller with protection function, including hand control box and the host computer installed on crane and with the hand control box between through wireless communication connection, voltage monitoring module is connected on the power input end of the host computer, current monitoring module and temperature monitoring module are connected between the signal input end of the host computer and the motor of the crane, the utility model discloses real-time monitoring power input voltage by voltage monitoring module, current monitoring module and temperature monitoring module monitor the current and temperature of motor respectively, these monitoring data are processed after host computer, can be fed back to hand control box by wireless communication, simultaneously, host computer makes corresponding control adjustment according to abnormal data, solve the problem that current wireless remote control controller lacks motor voltage, current and temperature monitoring, realize the protection purpose of multidimensional to crane motor.

Description

Technical Field

[0001] This utility model relates to the field of wireless remote control technology, specifically a wireless remote control controller with protection functions. Background Technology

[0002] Electric hoists and light-duty cranes, along with their matching controllers, are connected to the main unit via a cable. The main unit is typically mounted on or next to the crane's motor structure. With traditional wired controllers, operators must stand at or below the scaffolding, posing significant safety risks. To overcome these issues, a wireless remote control eliminates the cable connection between the handheld control box and the main unit, allowing for crane control via wireless signals. This design extends the control distance, enabling operators to control the crane without standing beside it, greatly improving operational convenience and safety, and expanding its application scenarios.

[0003] Despite the numerous advantages of wireless remote controls, current products still have some drawbacks. For example, most wireless remote controllers only control the forward and reverse rotation of the crane's motor, without monitoring the motor's operating voltage, current, and temperature. Common issues at construction sites include unstable power supply and incorrect voltage level connections, which can lead to machine damage. When the crane is overloaded, its operating current will exceed the rated current, causing the motor temperature to rise rapidly and potentially burn out. Furthermore, when the motor temperature exceeds the rated operating temperature, there is no over-temperature warning to alert operators to stop operation or improve cooling, resulting in prolonged overheating and damage to the motor. Utility Model Content

[0004] The purpose of this invention is to provide a wireless remote control controller with protection functions to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is: a wireless remote control controller with protection function, including a hand control box and a host installed on the crane and connected to the hand control box via wireless communication. A voltage monitoring module is connected to the power input terminal of the host, and a current monitoring module and a temperature monitoring module are connected between the signal input terminal of the host and the motor of the crane.

[0006] The effects achieved by the above components are as follows: the voltage monitoring module monitors the power input voltage in real time, while the current monitoring module and temperature monitoring module monitor the motor current and temperature respectively. After processing by the host, these monitoring data can be fed back to the hand control box via wireless communication. At the same time, the host makes corresponding control adjustments based on abnormal data, which solves the problem that existing wireless remote controllers lack monitoring of motor voltage, current and temperature, and achieves the purpose of multi-dimensional protection for the crane motor, increasing the safety of motor operation and improving the service life of the crane.

[0007] Preferably, the host includes a host MCU and a host-end radio frequency unit that communicates wirelessly with the hand control box-end radio frequency unit. The host MCU is connected to a motor control interface that is connected to the motor of the crane. A motor drive circuit is provided between the motor control interface and the host MCU. The voltage monitoring module is located between the host MCU and the power input terminal. The current monitoring module and the temperature monitoring module are located between the host MCU and the motor of the crane.

[0008] The aforementioned components achieve the following effects: By connecting the host MCU with the host-side RF unit, motor control interface, motor drive circuit, voltage monitoring module, current monitoring module, and temperature monitoring module, and through wireless communication between the host-side RF unit and the handheld control box's RF unit, a complete host control and monitoring system is constructed. The host MCU receives control commands from the handheld control box through the host-side RF unit, processes them, and then controls the motor operation through the motor drive circuit and motor control interface. Simultaneously, the voltage, current, and temperature monitoring modules transmit monitoring data to the host MCU, which analyzes and judges the data, realizing the integration of motor control and multi-parameter monitoring. This ensures timely response when parameters are abnormal, increases the host's integrated control capabilities, and improves the efficiency of handling abnormal motor conditions.

[0009] Preferably, the voltage monitoring module includes a PT voltage transformer connected to the host MCU and the power input terminal, and a voltage detection circuit is provided between the PT voltage transformer and the host MCU.

[0010] The aforementioned components achieve the following effects: By connecting the host MCU and the power input terminal through a PT voltage transformer, and setting a voltage detection circuit between the PT voltage transformer and the host MCU, a precise voltage monitoring subsystem is formed: the PT voltage transformer collects the voltage signal from the power input terminal, performs signal processing (such as filtering, amplification, rectification, etc.) through the voltage detection circuit, and then transmits it to the host MCU. The host MCU analyzes the voltage data, realizing accurate monitoring of the power input voltage, and can promptly detect abnormal conditions such as overvoltage and undervoltage, providing reliable voltage protection for the motor, increasing the accuracy of voltage monitoring, and improving the motor's protection capability in the event of voltage abnormalities.

[0011] Preferably, the current monitoring module includes a CT current transformer connected to the host MCU and the motor of the crane, and a current detection circuit is provided between the CT current transformer and the host MCU.

[0012] The aforementioned components achieve the following effects: By connecting the host MCU and the crane motor through the CT current transformer, and setting a current detection circuit between the CT current transformer and the host MCU, an effective current monitoring subsystem is formed: the CT current transformer senses the current signal when the motor is running, which is then processed by the current detection circuit and converted into an electrical signal that can be recognized by the host MCU. The host MCU analyzes the current data in real time, solving the problem of not being able to monitor current abnormalities such as motor overload in a timely manner, realizing real-time monitoring of motor current, increasing protection against motor overload, and improving the stability of motor operation.

[0013] Preferably, the temperature monitoring module includes an NTC temperature sensor connected to the host MCU and the crane motor, and a temperature detection circuit is provided between the NTC temperature sensor and the host MCU.

[0014] The aforementioned components achieve the following effects: By connecting the host MCU and the crane motor through an NTC temperature sensor, and setting up a temperature detection circuit between the NTC temperature sensor and the host MCU, a sensitive temperature monitoring subsystem is formed. The NTC temperature sensor changes its resistance value as the motor temperature changes, and the temperature detection circuit converts the resistance change into an electrical signal and transmits it to the host MCU. The MCU uses this signal to determine whether the motor temperature is abnormal, thus realizing real-time monitoring of the motor temperature. It can issue early warnings or take control measures in a timely manner when the motor temperature is too high, solving the problem of easy damage to the motor due to overheating, increasing the motor's temperature protection function, and improving the motor's safe operating coefficient.

[0015] Preferably, the hand control box includes a hand control box MCU and a hand control box-side radio frequency unit, control buttons, LED status indicator lights, LCD display module, and battery power management unit connected to the hand control box MCU.

[0016] The aforementioned components achieve the following effects: By connecting the hand-held control box MCU with the hand-held control box radio frequency unit, control buttons, LED status indicators, LCD display module, and battery power management unit, a fully functional hand-held control box system is formed. The hand-held control box MCU receives commands from the control buttons and sends them to the host through the hand-held control box radio frequency unit. At the same time, it receives feedback information from the host, drives the LCD display module to display relevant data, and the LED status indicators to indicate the working status. The battery power management unit ensures a stable power supply to the hand-held control box, realizing remote control, status display, and autonomous power management of the crane by the hand-held control box. This increases the functionality and ease of use of the hand-held control box and improves the operator's understanding of the crane's status.

[0017] Preferably, an EMC protection circuit is provided between the PT voltage transformer and the power input terminal. The EMC protection circuit is connected in sequence to an AC / DC converter and a DC / DC converter. The DC / DC converter is connected to the host MCU and the motor drive circuit.

[0018] The effects achieved by the above components are as follows: By setting an EMC protection circuit between the PT voltage transformer and the power input terminal, and by connecting the EMC protection circuit in sequence to the AC / DC converter and the DC / DC converter, a stable and interference-resistant power supply system is formed. The EMC protection circuit reduces the impact of external electromagnetic interference on voltage monitoring and power supply. The AC / DC converter converts alternating current to direct current, and the DC / DC converter further converts the voltage to a working voltage suitable for the host MCU and motor drive circuit. This ensures that the components of the host can obtain a stable power supply in complex electromagnetic environments, while ensuring the accuracy of voltage monitoring, increasing the host's anti-electromagnetic interference capability, and improving the reliable operation of the equipment in harsh environments.

[0019] Preferably, the signal input terminal of the host MCU is connected to a control handle with a button, a control circuit is provided between the control handle and the host MCU, the signal output terminal of the host MCU is connected to an indicator module for the crane's operating status, and a status indicator circuit is provided between the indicator module and the host MCU signal.

[0020] The aforementioned components achieve the following effects: By connecting the host MCU to a control handle with buttons (via a control circuit) and to an indicator module (via a status indicator circuit), an auxiliary control and status display mechanism is formed on the host side. The operation commands of the control handle are transmitted to the host MCU via the control circuit, serving as a supplement to the control box. The indicator module displays the crane's operating status under the drive of the status indicator circuit, realizing diversified control methods. In case of a malfunction in the control box, emergency operation can be performed via the control handle. At the same time, status information is displayed from multiple angles, increasing the flexibility and reliability of operation and improving the comprehensive perception of the crane's operating status.

[0021] This utility model provides an improved wireless remote control controller with protective functions, which has the following improvements and advantages compared with the prior art:

[0022] This invention connects a voltage monitoring module to the power input terminal of the main unit, and a current monitoring module and a temperature monitoring module to the signal input terminal of the main unit and the motor of the crane. The handheld control box is also wirelessly connected to the main unit, forming a comprehensive monitoring and control system. The voltage monitoring module monitors the power input voltage in real time, while the current and temperature monitoring modules monitor the motor current and temperature respectively. After processing by the main unit, this monitoring data is fed back to the handheld control box via wireless communication. Simultaneously, the main unit makes corresponding control adjustments based on abnormal data, solving the problem of existing wireless remote controllers lacking monitoring of motor voltage, current, and temperature, and achieving multi-dimensional protection for the crane motor. Attached Figure Description

[0023] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0024] Figure 1 This is a structural block diagram of the present invention;

[0025] Figure 2 This is a structural block diagram of the hand control box in this utility model;

[0026] Figure 3 This is a structural block diagram of the host computer in this utility model. Detailed Implementation

[0027] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0028] This utility model provides an improved wireless remote control controller with protective functions. The technical solution of this utility model is as follows:

[0029] In embodiments of this utility model, such as Figures 1-3As shown, a wireless remote control controller with protection function includes a hand control box and a host installed on a crane and connected to the hand control box via wireless communication. The host includes a host MCU and a host-side radio frequency unit that communicates wirelessly with the radio frequency unit at the hand control box. The host MCU is connected to a motor control interface that is connected to the crane's motor. A motor drive circuit is set between the motor control interface and the host MCU. A voltage monitoring module is set between the host MCU and the power input terminal. A current monitoring module and a temperature monitoring module are set between the host MCU and the crane's motor. Through the connection between the host MCU and the host-side radio frequency unit, the motor control interface, the motor drive circuit, the voltage monitoring module, the current monitoring module, and the temperature monitoring module, as well as the wireless communication between the host-side radio frequency unit and the radio frequency unit at the hand control box, a complete host control and monitoring system is constructed: The host MCU receives control commands from the hand control box through the host-side radio frequency unit, processes them, and controls the motor to run through the motor drive circuit and the motor control interface. At the same time, the voltage, current, and temperature monitoring modules transmit monitoring data to the host MCU. The MCU analyzes and judges the data, realizing the integration of motor control and multi-parameter monitoring, ensuring timely response when parameters are abnormal.

[0030] The handheld control box includes a handheld control MCU, a handheld control-side radio frequency unit connected to the MCU, control buttons, LED status indicators, an LCD display module, and a battery power management unit. Through the connection of the handheld control MCU with the handheld control-side radio frequency unit, control buttons, LED status indicators, LCD display module, and battery power management unit, a fully functional handheld control box system is formed: the handheld control MCU receives commands from the control buttons and sends them to the host via the handheld control-side radio frequency unit; simultaneously, it receives feedback information from the host, drives the LCD display module to display relevant data, the LED status indicators to indicate the working status, and the battery power management unit to ensure a stable power supply to the handheld control box. This enables remote control and status monitoring of the crane by the handheld control box. Display and autonomous power supply management; the control buttons are the corresponding function control buttons of the remote control, including power on, power off, up, down, left, right, etc., according to the actual control requirements of the crane. The MCU central processing unit communicates with the host via the radio frequency wireless signal transceiver unit. Based on the operating information fed back by the host, the results are displayed on the hand-held LCD screen. The host operating information includes: host motor voltage, host motor current, and host motor temperature. When the hand-held control box is powered on, pressing any button will cause the indicator light to flash green and send the corresponding control radio frequency signal. When the hand-held control box is powered off, pressing any button will cause the indicator light to flash red. The LED indicator and the LCD screen status indication work together and complement each other.

[0031] In this embodiment of the invention, a voltage monitoring module is connected to the power input terminal of the host, and a current monitoring module and a temperature monitoring module are connected between the signal input terminal of the host and the motor of the crane. The voltage monitoring module includes a PT voltage transformer connected to the host MCU and the power input terminal. A voltage detection circuit is set between the PT voltage transformer and the host MCU. The host MCU and the power input terminal are connected through the PT voltage transformer, and a voltage detection circuit is set between the PT voltage transformer and the host MCU, forming a precise voltage monitoring subsystem: the PT voltage transformer collects the voltage signal of the power input terminal, and after signal processing (such as filtering, amplification, rectification, etc.) by the voltage detection circuit, it is transmitted to the host MCU. The host MCU analyzes the voltage data, realizing accurate monitoring of the power input voltage, and can detect abnormal conditions such as overvoltage and undervoltage in a timely manner, providing reliable voltage protection for the motor.

[0032] The current monitoring module includes a CT current transformer connected to the host MCU and the crane motor. A current detection circuit is set between the CT current transformer and the host MCU. The connection between the host MCU and the crane motor via the CT current transformer and the current detection circuit between the CT current transformer and the host MCU constitutes an effective current monitoring subsystem: the CT current transformer senses the current signal when the motor is running, and after processing by the current detection circuit, it is converted into an electrical signal that can be recognized by the host MCU. The host MCU analyzes the current data in real time, which solves the problem of not being able to monitor current abnormalities such as motor overload in a timely manner, and realizes real-time monitoring of motor current.

[0033] The temperature monitoring module includes an NTC temperature sensor connected to both the host MCU and the crane motor. A temperature detection circuit is installed between the NTC temperature sensor and the host MCU. This forms a sensitive temperature monitoring subsystem: the NTC temperature sensor changes its resistance value with the motor temperature, and the temperature detection circuit converts this resistance change into an electrical signal, which is transmitted to the host MCU. The MCU then determines whether the motor temperature is abnormal, enabling real-time monitoring of the motor temperature. This allows for timely warnings or control measures when the motor temperature is too high, solving the problem of motor damage due to overheating. Alternatively, an NTC sensor with mounting ears can be used, which can be directly pressed onto the motor housing through screw holes to detect motor temperature. Since different parts of the motor generate different amounts of heat, the NTC sensor's sensing head can be fixed to any location where temperature needs to be detected using screws, making installation very flexible and convenient.

[0034] In this embodiment of the invention, an EMC protection circuit is provided between the PT voltage transformer and the power input terminal. The EMC protection circuit is sequentially connected to an AC / DC converter and a DC / DC converter. The DC / DC converter is connected to the host MCU and the motor drive circuit. By providing an EMC protection circuit between the PT voltage transformer and the power input terminal, and by sequentially connecting the EMC protection circuit to the AC / DC converter and the DC / DC converter, a stable and interference-resistant power supply system is formed. The EMC protection circuit reduces the impact of external electromagnetic interference on voltage monitoring and power supply. The AC / DC converter converts alternating current to direct current, and the DC / DC converter further converts the voltage to a suitable operating voltage for the host MCU and the motor drive circuit, ensuring... The system ensures stable power supply to all components of the main unit in complex electromagnetic environments. The main unit's MCU signal input is connected to a control handle with buttons. A status indication circuit is installed between the control handle and the main unit's MCU signal module. The connection between the main unit's MCU and the control handle (via the control circuit), and between the control handle and the indication module (via the status indication circuit), forms an auxiliary control and status display mechanism for the main unit. The control handle's operation commands are transmitted to the main unit's MCU via the control circuit, supplementing the hand-held control box. The indication module, driven by the status indication circuit, displays the crane's operating status, achieving diversified control methods. In case of a hand-held control box malfunction, emergency operation can be performed via the control handle, while simultaneously displaying status information from multiple angles.

[0035] The working principle of the wireless remote control controller with protection function provided by this utility model is as follows: A voltage monitoring module is connected to the power input terminal of the main unit. A current monitoring module and a temperature monitoring module are connected between the signal input terminal of the main unit and the motor of the crane. The handheld control box is wirelessly connected to the main unit, forming a comprehensive monitoring and control system: The voltage monitoring module monitors the power input voltage in real time. The PT voltage transformer collects the voltage signal from the power input terminal. After signal processing (such as filtering, amplification, rectification, etc.) by the voltage detection circuit, the signal is transmitted to the main unit MCU. The main unit MCU analyzes the voltage data, achieving accurate monitoring of the power input voltage and enabling timely detection of abnormal conditions such as overvoltage and undervoltage, providing reliable voltage protection for the motor. The current monitoring module and the temperature monitoring module monitor the motor current and temperature respectively. The CT current transformer senses the current signal during motor operation, and... The current detection circuit processes the data and converts it into an electrical signal that can be recognized by the host MCU. The host MCU analyzes the current data in real time, solving the problem of not being able to monitor abnormal currents such as motor overload in a timely manner. The NTC temperature sensor changes its resistance value with the change of motor temperature. The temperature detection circuit converts the resistance change into an electrical signal and transmits it to the host MCU. The MCU judges whether the motor temperature is abnormal based on this signal, realizing real-time monitoring of motor temperature. It can issue early warnings or take control measures in a timely manner when the motor temperature is too high. After processing by the host, this monitoring data can be fed back to the hand control box through wireless communication. The host motor voltage, host motor current, and host motor temperature are displayed on the LCD screen of the hand control box. At the same time, the host makes corresponding control adjustments based on abnormal data, solving the problem that existing wireless remote controllers lack monitoring of motor voltage, current, and temperature, and achieving the purpose of multi-dimensional protection for the crane motor.

[0036] 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 controller with protection function, comprising a hand control box and a host computer installed on a crane and wirelessly connected to the hand control box, characterized in that: A voltage monitoring module is connected to the power input terminal of the host, and a current monitoring module and a temperature monitoring module are connected between the signal input terminal of the host and the motor of the crane.

2. A wireless remote control controller with protection function according to claim 1, characterized in that: The host includes a host MCU and a host-side radio frequency unit that communicates wirelessly with the hand control box-side radio frequency unit. The host MCU is connected to a motor control interface that is connected to the motor of the crane. A motor drive circuit is provided between the motor control interface and the host MCU. The voltage monitoring module is located between the host MCU and the power input terminal. The current monitoring module and the temperature monitoring module are located between the host MCU and the motor of the crane.

3. A wireless remote control controller with protection function according to claim 2, characterized in that: The voltage monitoring module includes a PT voltage transformer connected to the host MCU and the power input terminal, and a voltage detection circuit is provided between the PT voltage transformer and the host MCU.

4. A wireless remote control controller with protection function according to claim 2, characterized in that: The current monitoring module includes a CT current transformer connected to the host MCU and the crane motor, and a current detection circuit is provided between the CT current transformer and the host MCU.

5. A wireless remote control controller with protection function according to claim 2, characterized in that: The temperature monitoring module includes an NTC temperature sensor connected to the host MCU and the crane motor, and a temperature detection circuit is provided between the NTC temperature sensor and the host MCU.

6. A wireless remote control controller with protection function according to claim 1, characterized in that: The hand control box includes a hand control box MCU, a hand control box-side radio frequency unit connected to the hand control box MCU, control buttons, LED status indicators, an LCD display module, and a battery power management unit.

7. A wireless remote control controller with protection function according to claim 3, characterized in that: An EMC protection circuit is provided between the PT voltage transformer and the power input terminal. The EMC protection circuit is connected in sequence to an AC / DC converter and a DC / DC converter. The DC / DC converter is connected to the host MCU and the motor drive circuit.

8. A wireless remote control controller with protection function according to claim 2, characterized in that: The signal input terminal of the host MCU is connected to a control handle with a button. A control circuit is provided between the control handle and the host MCU. The signal output terminal of the host MCU is connected to an indicator module for the crane's operating status. A status indicator circuit is provided between the indicator module and the host MCU signal.

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