A novel motor control protection system

Abstract

The utility model relates to motor protection technical field, concretely relates to a novel motor control protection system, including wireless temperature sensor, wireless gateway, monitoring server, host computer, motor protection module. The signal output end of wireless temperature sensor and the signal receiving end of wireless gateway are wirelessly connected, and the data that wireless temperature sensor collected is transmitted to wireless gateway, wireless gateway receives the data from multiple wireless temperature sensors and transmits the data of multiple wireless temperature sensors received to monitoring server, monitoring server stores, analyzes and processes the temperature data collected, and transmits the data to host computer and motor protection module, host computer is used for real -time display each motor's real -time temperature data, historical trend, set temperature alarm threshold value. The utility model solves the technical problem that cannot detect the temperature of key position of motor in time in the prior art, adopts wired communication and cannot take protective measures in time when temperature is abnormal.

Description

Technical Field

[0001] This utility model relates to the field of motor protection technology, and more specifically, to a novel motor control and protection system. Background Technology

[0002] Electric motors are indispensable power equipment in modern industry, widely used in various production fields, including manufacturing, transportation, energy, construction, and automation equipment. They convert electrical energy into mechanical energy, providing power to various mechanical devices and are an important component of modern production and social life. The normal operation of electric motors is crucial for ensuring production efficiency, improving product quality, reducing energy consumption, and ensuring equipment safety. During operation, electric motors can experience various malfunctions due to overheating, which may lead to equipment shutdowns, production interruptions, or even safety accidents.

[0003] While existing motor protection technologies can ensure the safe operation of motors to a certain extent, some defects and shortcomings still exist in practical applications. Motor temperature change is a crucial operating parameter, but traditional protection devices may fail to detect abnormal temperatures in critical motor components (windings or bearings) in a timely manner, causing the motor to continue operating under overheating conditions and leading to malfunctions. Furthermore, most existing motor protection systems use wired communication, which can result in complex wiring, high costs, and signal interference in some industrial environments. Additionally, they cannot automatically take protective measures when abnormal temperatures occur, affecting the system's reliability and stability. Summary of the Invention

[0004] The purpose of this application is to provide a novel motor control and protection system that solves the technical problems existing in the prior art, such as the inability to detect the temperature of key parts of the motor in a timely manner, the use of wired communication, and the inability to take timely protective measures when the temperature is abnormal.

[0005] To solve the above-mentioned technical problems, the solution adopted in this application is as follows: A novel motor control and protection system includes a wireless temperature sensor, a wireless gateway, a monitoring server, and a motor protection module. Wireless temperature sensors are deployed at key temperature measurement points of each motor to collect temperature data of each motor in real time. The motor protection module is installed inside the power control cabinet of the monitored motor; The signal output end of the wireless temperature sensor and the signal receiving end of the wireless gateway are wirelessly connected. The wireless temperature sensor transmits the collected temperature data, wireless temperature sensor ID, and motor number to the wireless gateway via wireless signal. The data output end of the wireless gateway is wirelessly connected to the data input end of the monitoring server. The wireless gateway sends the data collected by the wireless temperature sensor to the monitoring server in the form of wireless signals. The signal input terminal of the motor protection module is connected to the signal output terminal of the monitoring server, and the monitoring server transmits the alarm signal to the motor protection module. The motor protection module is connected between the motor and the motor power supply, controlling the connection and disconnection of the circuit between the motor power supply and the motor; the motor protection module receives alarm signals from the monitoring server and executes the disconnection of the circuit between the motor power supply and the motor. The motor protection module includes a wireless communication unit, a microprocessor, and a power control unit; The wireless communication unit is used to communicate with the monitoring server and receive alarm signals transmitted by the monitoring server. The data receiving end of the wireless communication unit and the data sending end of the monitoring server are wirelessly connected. The wireless communication unit is electrically connected to the microprocessor via an SPI serial port, transmitting alarm signals to the microprocessor. The microprocessor then outputs instructions based on the alarm signals to control the power supply to the motor. The signal input terminal of the power control unit is electrically connected to the GPIO interface of the microprocessor, and is used to receive instructions output by the microprocessor and execute instructions to control the power supply to the motor. The power control unit includes a relay U1 and its driving circuit; the GPIO pins of the microprocessor are connected to the control signal input terminals of the driving circuit; the relay U1 is connected in series on the power input side of the motor, one end of the switch S1 of the relay U1 is connected to the power input terminal of the motor, and the other end of the switch S1 of the relay U1 is connected to the motor; the driving circuit includes transistors Q1 and Q2; when the microprocessor outputs a low level, transistors Q2 and Q1 are cut off, the switch S1 of the relay U1 is opened, the motor power is cut off, and the motor stops running; when the microprocessor outputs a high level, transistors Q1 and Q2 are turned on, the motor power is turned on, and the motor runs normally.

[0006] Preferably, the novel motor control and protection system further includes a host computer; the signal receiving end of the host computer is wirelessly connected to the signal output end of the monitoring server for receiving data transmitted by the monitoring server; the signal transmitting end of the host computer is wirelessly connected to the signal receiving end of the monitoring server, and the host computer sends the alarm threshold to the monitoring server in the form of a wireless signal; the host computer is also used to display temperature data, wireless temperature sensor ID, and motor number in real time; when the host computer receives an alarm signal from the monitoring server, the host computer issues an audible alarm and sends alarm information to the user.

[0007] Preferably, the microprocessor is an STM32F407ZGT6.

[0008] Preferably, the wireless temperature sensor is an EM500-PT100-T500 sensor.

[0009] Preferably, the wireless gateway is model ZG2025.

[0010] The technical solution of this application has at least the following advantages and beneficial effects: 1. This utility model uses a wireless temperature sensor, which is deployed at the key temperature measurement parts of the motor. It can collect temperature data of the motor in real time during operation. The wireless temperature sensor has high measurement accuracy and a wide range, and can accurately reflect the temperature changes of the motor, providing reliable data support for assessing the health status of the motor. The wireless temperature sensor has a battery life of more than 10 years, which greatly reduces the frequency of battery replacement and maintenance workload.

[0011] 2. In this invention, the wireless temperature sensor, wireless gateway, monitoring server, and host computer are all wirelessly connected, and the modules communicate wirelessly with each other. Compared with existing wired communication methods, this wireless connection method eliminates the need for complex wiring and is lower in cost. Furthermore, this system offers flexible scalability. When the number of motor devices requiring temperature monitoring increases, adding wireless temperature sensors enables temperature monitoring of the motors. Through this modular and scalable design, the system can adapt to industrial application scenarios of different scales and types.

[0012] 3. The monitoring server and host computer of this utility model work closely together. The monitoring server stores, analyzes, and processes the collected temperature data, and calculates statistical values ​​such as the average temperature, maximum temperature, and minimum temperature of the motor in real time, analyzing temperature change trends. By comparing and analyzing historical data, the system can promptly detect temperature anomalies, providing a basis for predictive maintenance. Users can set temperature alarm thresholds through the host computer. When the motor temperature exceeds the normal range, the system will immediately trigger an alarm, alerting the user via sound and SMS to ensure timely action and prevent the fault from escalating.

[0013] 4. The motor protection module of this utility model is installed in the power control cabinet of the monitored motor. The motor protection module is equipped with a wireless communication unit, a microprocessor and a power control unit. The motor protection module can control the power supply of the monitored motor according to the alarm signal. When the motor temperature is abnormal, it can cut off the motor power supply in time to achieve the protection effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is the circuit diagram for the power control unit. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. The terms "center," "upper," "lower," "inner," and "outer," indicating orientation or positional relationships based on the orientation or positional relationships shown in the figures, or the orientation or positional relationships commonly used when the product is in use, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Example

[0017] Please refer to Figure 1 This utility model provides a novel motor control and protection system, including a wireless temperature sensor, a wireless gateway, a monitoring server, a host computer, and a motor protection module.

[0018] The signal output end of the wireless temperature sensor is wirelessly connected to the signal receiving end of the wireless gateway, transmitting the temperature data, wireless temperature sensor ID, and motor number collected by the wireless temperature sensor to the wireless gateway. The wireless gateway receives data from multiple wireless temperature sensors. The data output end of the wireless gateway is wirelessly connected to the data input end of the monitoring server, transmitting the data received from multiple wireless temperature sensors to the monitoring server. The data output end of the monitoring server is wirelessly connected to the data receiving end of the host computer. The monitoring server stores, analyzes, and processes the collected temperature data, and transmits the temperature data of multiple motors collected by multiple wireless temperature sensors, the wireless temperature sensor ID, and the motor number to the host computer. The monitoring server determines whether the motor temperature is normal based on a preset temperature alarm threshold. When the motor temperature is abnormal, the monitoring server generates an alarm signal and transmits the signal to the host computer. The motor protection module is used to cut off the motor power supply when the motor temperature is abnormal. The signal input end of the motor protection module is wirelessly connected to the signal output end of the monitoring server, receiving the alarm signal transmitted by the monitoring server. The host computer is used to display the real-time temperature data, historical trends, and set temperature alarm thresholds of each motor.

[0019] Furthermore, wireless temperature sensors are deployed at key temperature measurement points on each motor (motor windings, bearings, etc.) to collect real-time temperature data from each motor. The wireless temperature sensors have a measurement range of -50℃ to 500℃, a measurement accuracy of ±0.5℃, and a temperature measurement resolution of 0.1℃, accurately measuring the real-time temperature of the motor. The wireless temperature sensors are powered by a 19000mAh lithium battery (ER34615), providing up to 10 years of battery life and avoiding frequent battery replacements. The wireless temperature sensors can be installed using wall mounting, pole mounting, DIN rail mounting, and other convenient and quick installation methods, allowing for flexible installation options based on the motor's structure.

[0020] Specifically, the wireless temperature sensor is installed at the temperature measurement point of the motor, making close contact with the motor under test. When the temperature of the motor changes, the wireless temperature sensor detects the temperature change and generates a corresponding electrical signal. The wireless temperature sensor used in this solution has a built-in microprocessor. The microprocessor digitizes the electrical signal to obtain a digital electrical signal, which is then encoded by the microprocessor.

[0021] Specifically, the signal output end of the wireless temperature sensor and the signal receiving end of the wireless gateway are wirelessly connected. The wireless temperature sensor has a built-in LoRa wireless communication module. The LoRa wireless communication module modulates the digital electrical signal after the temperature data is encoded onto a specific radio frequency band and transmits it wirelessly to the wireless gateway through an antenna.

[0022] It should be noted that the wireless temperature sensor used in this solution is the Milesight EM500-PT100-T500 sensor. This sensor has local storage capabilities, capable of storing 1000 sensor data points, and supports data retransmission and data backhaul functions after network outages, ensuring information traceability and preventing data loss. It has a long communication range, up to 15 kilometers in open environments and up to 2 kilometers in urban areas, and an IP67 protection rating, supporting various waterproof and outdoor applications.

[0023] Furthermore, the wireless gateway has a built-in wireless communication module. The data receiving antenna of the wireless communication module continuously listens for signals on a specific frequency band. When it receives data sent by the wireless temperature sensor, it temporarily stores it in the data receiving buffer. The wireless gateway then parses the received data to extract temperature data, the ID number of the wireless temperature sensor, the motor number, and other data.

[0024] Specifically, the data output end of the wireless gateway and the data input end of the monitoring server are wirelessly connected. The wireless gateway encapsulates data such as temperature data, the ID number of the wireless temperature sensor, and the motor number, and sends it to the monitoring server as a wireless signal.

[0025] It should be noted that the wireless gateway used in this solution is the ZG2025 wireless gateway from Zhirong Technology. This wireless gateway is designed specifically for the Industrial Internet of Things, supports multiple wireless protocols, has powerful data processing capabilities, and is suitable for distributed temperature monitoring systems.

[0026] Furthermore, the monitoring server is the core of the entire system. It is responsible for receiving, storing, analyzing, and processing data such as temperature data, wireless temperature sensor ID numbers, and motor numbers transmitted from the wireless gateway, and interacting with the host computer software.

[0027] Specifically, the data receiving end of the monitoring server and the data output end of the wireless gateway are wirelessly connected. The wireless gateway transmits temperature data to the monitoring server via wireless signals. The monitoring server stores the received data in its database in real time. The received data includes motor temperature data, wireless temperature sensor ID, measurement time, and motor number.

[0028] Specifically, the monitoring server analyzes the received temperature data in real time, calculates the average temperature of each motor, compiles statistics such as the highest and lowest temperatures, and analyzes temperature change trends to determine if there are any abnormal temperature increases or decreases. The monitoring server also performs historical comparative analysis of the temperature data, comparing it with normal operating data over a past period to determine if the current temperature is within a reasonable range.

[0029] Specifically, the monitoring server determines in real time whether the temperature of each motor exceeds the normal range based on the preset temperature alarm threshold for each motor. If the temperature of a motor exceeds the temperature alarm threshold, the monitoring server generates an alarm signal for that motor and transmits this alarm signal to the host computer and the motor protection module. Alarm signal types include over-temperature alarm, under-temperature alarm, and excessively rapid temperature change alarm. The alarm signal content includes the motor number and alarm signal type. Alarm signals are recorded in the database in log form and notified to operators via the host computer. Notification methods can include pop-up reminders, audible and visual alarms, SMS notifications, or email reminders. The temperature alarm threshold for each motor can be flexibly set via the host computer; different temperature alarm thresholds can be set for different motors or different operating states.

[0030] Furthermore, the motor protection module is equipped with a wireless communication unit, a microprocessor, and a power control unit.

[0031] Specifically, the motor protection module is installed inside the power control cabinet of the monitored motor to directly control the motor's power supply circuit. It should be noted that existing motor power supply circuits generally include a stop circuit to control the motor to stop running, but existing circuits... The main power control methods for motors are mechanical braking, regenerative braking, energy-consumption braking, and direct power cut-off. However, none of these methods allow for centralized control and management through a monitoring server. The motor protection module designed in this invention uses a relay as the switching device for the power control unit, connecting it in series with the motor's power input. The original power circuit of the motor remains unchanged. Without interfering with the normal operation of the original power circuit, the motor protection module receives alarm signals from the monitoring server and controls the motor upon receiving an alarm signal. During normal operation, the relay switch is closed, and the motor power supply is normal. When an alarm signal is received, the relay switch opens, cutting off the motor power supply.

[0032] Specifically, the wireless communication unit is used to communicate with the monitoring server. The data receiving end of the wireless communication unit and the data sending end of the monitoring server are wirelessly connected. The wireless communication unit is in a continuous listening state, constantly receiving wireless signals from the surrounding environment. When it receives an alarm signal sent by the monitoring server, the wireless communication unit captures the alarm signal and converts the electromagnetic wave alarm signal into an electrical signal alarm signal.

[0033] It should be noted that the wireless communication unit in this utility model is a remote spread spectrum wireless module with model number M-SX1278S2 developed by DreamLNK (Junye Technology).

[0034] Specifically, the wireless communication unit connects to the microprocessor via an SPI serial port, transmitting the alarm signal, converted into an electrical signal, to the microprocessor. Upon receiving the alarm signal, the microprocessor verifies its integrity and accuracy. After confirming the alarm signal is complete and accurate, it compares the motor number contained in the alarm signal with the motor number it controls. If the motor number in the alarm signal matches the motor number it controls, it outputs a power-off command to the power control unit. If the motor number in the alarm signal does not match the motor number it controls, it does not output a power-off command and maintains its original operating state.

[0035] It should be noted that the microprocessor in this utility model is the STM32F407ZGT6 MCU developed by STMicroelectronics.

[0036] Specifically, refer to Figure 2 The power control unit includes a relay U1 and its driving circuit. The driving circuit includes resistors R1, R2, R3, R4, and R5, transistors Q1 and Q2, diode D1, Zener diode D2 and D3, and capacitor C1.

[0037] More specifically, resistor R4 is connected to the base of transistor Q2; resistors R3, R5, and Zener diode D2 are connected in series to the collector of transistor Q2; resistor R2 is connected to the base of transistor Q1; the collector of transistor Q1 is connected to ground through resistor R1; diode D1 and capacitor C1 are connected in series between the collector and emitter of transistor Q1; Zener diode D3 is connected to terminal 2 of the coil of relay U1; and terminal 1 of the coil of relay U1 is connected to the positive terminal of capacitor C1.

[0038] More specifically, relay U1 is connected in series on the power input side of the motor. One end of the switch S1 of relay U1 is connected to the power input terminal of the motor, and the other end of the switch S1 of relay U1 is connected to the motor. The switch S1 of relay U1 is closed when the motor is working normally.

[0039] More specifically, the microprocessor's GPIO pins are connected to the control signal input terminal IN of the drive circuit. When the motor temperature is abnormal, the microprocessor outputs a power-off command, which is low level; when the motor is running normally, the microprocessor outputs a high level.

[0040] More specifically, when the microprocessor outputs a low level, transistor Q2 is cut off, cutting off the current flowing to the base of transistor Q1. Transistor Q1 is also cut off, the coil of relay U1 is de-energized, the magnetic field disappears, and the armature of relay U1 returns to its initial position under the action of its spring and other reset devices. Switch S1 of relay U1 is opened, the motor power supply is cut off, and the motor stops running. At this time, neither Zener diodes D2 nor D3 emits light, and the indicator circuit is in a stopped state. Conversely, when the microprocessor outputs a high level, transistors Q1 and Q2 are turned on, the motor power supply is turned on, and the motor runs normally. Thus, motor control and protection can be achieved when the motor temperature is abnormal.

[0041] Furthermore, the host computer is used to enable interaction between the user and the entire system, providing the user with an intuitive operating interface, making it convenient for the user to monitor motor temperature in real time, manage alarm information, and configure system parameters.

[0042] Specifically, users can set temperature alarm thresholds for each motor via a host computer. These thresholds include an upper temperature limit, a lower temperature limit, and a rate of temperature change. The host computer's signal transmitter and the monitoring server's signal receiver are wirelessly connected. The host computer sends the set alarm thresholds to the monitoring server via wireless signals. After receiving the alarm threshold settings, the monitoring server updates its internal alarm signal generation rules and begins monitoring temperature data and determining alarms according to the new thresholds. When an alarm occurs, the host computer will display an alarm window and send an audible alarm and SMS notification to the user. Users can view detailed alarm information on the host computer, including alarm time, alarm motor number, and alarm reason.

[0043] Specifically, the host computer's signal receiver and the monitoring server's signal output are wirelessly connected. The host computer communicates with the monitoring server to obtain real-time motor temperature data and displays it on the display interface. Furthermore, the host computer displays a temperature trend graph, showing the motor temperature changing over time. Users can intuitively observe the motor temperature fluctuation trend, promptly detect abnormalities when abnormal temperature fluctuations begin to appear, effectively predict motor failures, and notify staff to take preventative measures.

[0044] Specifically, users can query historical temperature data over a period of time through the host computer software, filtering by time range, motor number, wireless temperature sensor ID, and other criteria. The host computer provides trend analysis functionality for historical data, helping users analyze the temperature variation patterns of the motor and assess its health status. Furthermore, the host computer can generate historical data reports, which can be exported in Excel, PDF, and other formats for further analysis and archiving.

[0045] Therefore, by deploying wireless temperature sensors at the temperature measurement points of the motors, these sensors collect the motor temperature in real time. The temperature data, along with the wireless temperature sensor ID and motor number, are encoded and transmitted to a wireless gateway wirelessly connected to the sensors. The gateway's signal transmitter and the monitoring server's signal receiver are wirelessly connected. The gateway decodes the received data and transmits it to the monitoring server. The monitoring server stores and processes the data, then transmits the temperature data, wireless temperature sensor ID, and motor number to a host computer wirelessly connected to the monitoring server for real-time display. If the temperature or temperature change rate exceeds the alarm threshold, the monitoring server generates an alarm signal and outputs it to the host computer and the motor protection module. The host computer alerts the user via sound and SMS. Upon receiving the alarm signal, each motor protection module controls the power supply to its corresponding motor based on the alarm signal content. Furthermore, users can view the real-time temperature and temperature change rate of each motor through a host computer, and set temperature and temperature change rate alarm thresholds via the host computer. These alarm thresholds are transmitted to the monitoring server. After receiving the alarm threshold settings, the monitoring server updates its internal alarm rules and begins monitoring and alarming according to the new thresholds. Through the connection and cooperation of these components, this new motor control and protection system can achieve real-time monitoring of the motor and analysis of data for fault prediction. When abnormal temperatures such as excessively high temperatures or excessively rapid temperature changes occur, the system can promptly cut off the motor power supply to protect the motor and prevent further failures and losses.

[0046] It should be noted that all the electronic devices mentioned in the above embodiments are available in domestic and international markets.

[0047] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solution of this utility model based on the above description. The scope of this utility model is defined by the appended claims.

Claims

1. A novel motor control and protection system, characterized in that: Includes wireless temperature sensors, wireless gateways, monitoring servers, and motor protection modules; Wireless temperature sensors are deployed at key temperature measurement points of each motor to collect temperature data of each motor in real time. The motor protection module is installed inside the power control cabinet of the monitored motor; The signal output end of the wireless temperature sensor and the signal receiving end of the wireless gateway are wirelessly connected. The wireless temperature sensor transmits the collected temperature data, wireless temperature sensor ID, and motor number to the wireless gateway via wireless signal. The data output end of the wireless gateway is wirelessly connected to the data input end of the monitoring server. The wireless gateway sends the data collected by the wireless temperature sensor to the monitoring server in the form of wireless signals. The signal input terminal of the motor protection module is connected to the signal output terminal of the monitoring server, and the monitoring server transmits the alarm signal to the motor protection module. The motor protection module is connected between the motor and the motor power supply, controlling the connection and disconnection of the circuit between the motor power supply and the motor; the motor protection module receives alarm signals from the monitoring server and executes the disconnection of the circuit between the motor power supply and the motor. The motor protection module includes a wireless communication unit, a microprocessor, and a power control unit; The wireless communication unit is used to communicate with the monitoring server and receive alarm signals transmitted by the monitoring server. The data receiving end of the wireless communication unit and the data sending end of the monitoring server are wirelessly connected. The wireless communication unit is electrically connected to the microprocessor via an SPI serial port, transmitting alarm signals to the microprocessor. The microprocessor then outputs instructions based on the alarm signals to control the power supply to the motor. The signal input terminal of the power control unit is electrically connected to the GPIO interface of the microprocessor, and is used to receive instructions output by the microprocessor and execute instructions to control the power supply to the motor. The power control unit includes a relay U1 and its driving circuit; the GPIO pins of the microprocessor are connected to the control signal input terminals of the driving circuit; the relay U1 is connected in series on the power input side of the motor, one end of the switch S1 of the relay U1 is connected to the power input terminal of the motor, and the other end of the switch S1 of the relay U1 is connected to the motor; the driving circuit includes transistors Q1 and Q2; when the microprocessor outputs a low level, transistors Q2 and Q1 are cut off, the switch S1 of the relay U1 is opened, the motor power is cut off, and the motor stops running; when the microprocessor outputs a high level, transistors Q1 and Q2 are turned on, the motor power is turned on, and the motor runs normally.

2. The novel motor control and protection system according to claim 1, characterized in that... It also includes a host computer; the host computer's signal receiving end and the monitoring server's signal output end are wirelessly connected to receive data transmitted by the monitoring server; the host computer's signal transmitting end and the monitoring server's signal receiving end are wirelessly connected, and the host computer sends the alarm threshold to the monitoring server via wireless signal; the host computer is also used to display temperature data, wireless temperature sensor ID, and motor number in real time; when the host computer receives an alarm signal from the monitoring server, it issues an audible alarm and sends alarm information to the user.

3. The novel motor control and protection system according to claim 2, characterized in that, The microprocessor is an STM32F407ZGT6.

4. A novel motor control and protection system according to claim 3, characterized in that, The wireless temperature sensor is model EM500-PT100-T500.

5. A novel motor control and protection system according to claim 4, characterized in that, The wireless gateway is model ZG2025.

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