A non-contact automatic temperature monitoring system and method for motors

Abstract

This invention discloses a non-contact automatic motor temperature monitoring system and method. The system includes an electrical control system housed within a protective enclosure and an audible and visual alarm mounted on the enclosure. The protective enclosure has a connector for connecting an infrared temperature sensor. The infrared temperature sensor detects the surface temperature data of the motor and is connected to the electrical control system via the connector. The output of the electrical control system is connected to the audible and visual alarm, and the electrical control system drives the alarm to emit an alarm signal based on the motor temperature data collected by the infrared temperature sensor. The advantages of this invention are: it is suitable for non-contact, continuous, real-time online monitoring and display of the temperature of various parts of a motor in industrial environments, automatically comparing real-time data with set values, and outputting a signal to drive the audible and visual alarm if the set value is exceeded, thus alerting the operator to pay attention and take appropriate action.

Description

Technical Field

[0001] This invention relates to the field of automatic motor temperature detection, and in particular to a non-contact automatic motor temperature monitoring system and method. Background Technology

[0002] Currently, motor temperature monitoring typically involves embedding a temperature sensor in the motor coil or inserting a resistance rod into the bearing surface, requiring contact with the part being measured. This method has three main problems: First, motor temperature monitoring requires contact with the object being measured and relies on a display instrument or control system to show the temperature. This involves a cumbersome process such as laying cables, wiring, and programming configuration, which cannot be completed by non-professionals. Second, when the temperature sensor fails, the machine must be stopped and the motor casing disassembled for replacement, disrupting production and wasting time and effort. Third, some motors are shipped without a temperature sensor, making temperature monitoring impossible and preventing timely detection of motor faults, potentially leading to accidents.

[0003] Non-contact temperature measurement can be used for temperature detection, but in industrial production sites, how to design the detection and alarm of non-contact temperature sensors, and how to ensure non-contact temperature monitoring, protection, and alarm actions are technical problems that need to be solved. Moreover, non-contact detection can only detect surface temperature. In fact, when protecting motors, internal temperature data also needs to be considered. How to comprehensively consider and realize non-contact motor temperature monitoring, and thus effectively protect the electrodes, is a technical problem that existing technologies cannot solve. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a non-contact motor temperature automatic monitoring system and method. The non-contact motor temperature monitoring system uses infrared light to perform non-contact temperature detection on the measured part of the motor. Through various processes such as signal isolation, temperature data acquisition, analog-to-digital conversion, data processing, temperature display, parameter setting, over-limit alarm, trend recording, signal remote transmission, and protection action, the system realizes automatic real-time monitoring and protection of the operating motor.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a non-contact automatic motor temperature monitoring system, comprising an electrical control system installed inside a protective enclosure and an audible and visual alarm installed on the protective enclosure; the protective enclosure is provided with a connector for connecting an infrared temperature sensor; the infrared temperature sensor is used to detect the surface temperature data of the motor, and it is connected to the electrical control system through the connector; the output end of the electrical control system is connected to the audible and visual alarm, and the electrical control system is used to drive the audible and visual alarm to issue an alarm signal based on the motor temperature data collected by the infrared temperature sensor.

[0006] The electronic control system includes a signal isolator, a data acquisition and control module, and a display. The motor surface temperature data collected by the infrared sensor is filtered out by the signal isolator and then sent to the data acquisition and control module. The data acquisition and control module is used to process the temperature data collected by the infrared temperature sensor to obtain the motor surface temperature and / or internal predicted temperature. The output of the data acquisition and control module is connected to the display to drive the display to show the motor surface temperature and / or internal predicted temperature.

[0007] The output of the data acquisition and control module is connected to the audible and visual alarm. The data acquisition and control module drives and controls the working state of the audible and visual alarm based on the surface temperature of the motor and the predicted internal temperature.

[0008] The data acquisition and control module outputs analog signals to the remote monitoring system to enable remote monitoring of motor data.

[0009] The data acquisition and control module outputs a switching signal to the motor protection circuit based on the motor surface temperature and the internal predicted temperature, in order to protect the motor from abnormal temperature.

[0010] The display screen is a touch screen, which is used to display data in real time and set alarm temperature threshold parameters and cancel alarm signals on the touch screen.

[0011] The protective enclosure is equipped with a glass window, through which users can observe the information displayed on the screen inside the enclosure.

[0012] A non-contact method for automatic monitoring of motor temperature includes a parameter setting step and a monitoring and alarm step; wherein the parameter setting step includes: inputting setting parameters via a touch screen;

[0013] Monitoring and alarm steps: The temperature data transmitted by the infrared sensor is processed to obtain the surface temperature data and internal temperature data of the motor, which are then displayed on the touch screen; the alarm status of the motor is determined by comparing the surface temperature and internal temperature data of the motor with their corresponding temperature thresholds, and an alarm signal is issued.

[0014] The monitoring method also includes a manual inspection step: the data acquisition and control module processes the temperature data collected and uploaded by the infrared sensor to obtain and store the surface and internal temperature data of the motor; during inspection, the alarm temperature data and the corresponding temperature change curve are displayed through the touch screen, or the alarm is cleared by operating the touch screen.

[0015] When the motor is determined to be in a temperature alarm state based on the collected infrared sensor temperature data, the data acquisition and control module outputs a shutdown control signal to the motor protection circuit to shut down the motor's operating circuit.

[0016] Based on the temperature data collected by the infrared sensor, the collected temperature data is used as the motor surface temperature data. The data acquisition and control module predicts and outputs the motor's internal temperature data based on the surface temperature data. Different alarms are triggered for the motor based on the surface temperature data and the internal temperature data. Specific alarms include:

[0017] If the internal temperature of the motor exceeds the first temperature threshold, an abnormal motor temperature alarm is triggered. Otherwise, the system further checks if the surface temperature of the motor exceeds the second temperature threshold. If it does, an abnormal motor temperature alarm is triggered. Otherwise, the system further checks if the surface temperature of the motor exceeds the internal temperature of the motor. If the surface temperature exceeds the internal temperature, an abnormal motor temperature warning is triggered. If the surface temperature does not exceed the internal temperature, the motor temperature is considered normal.

[0018] When the alarm state is determined to be abnormal motor temperature, the alarm is issued through the alarm device, the output switch signal is sent to the motor protection circuit to disconnect the motor and send a remote alarm signal.

[0019] If an abnormal motor temperature is detected, a predictive strategy is employed to send a remote warning signal to the monitoring system, reminding the user to process the warning signal promptly and further coordinating with cooling equipment to cool the motor's operating environment.

[0020] Motor temperature abnormality alarms and motor temperature abnormality warnings are displayed on the on-site touch screen, providing basic reference information for inspection.

[0021] The internal temperature prediction uses a pre-trained neural network model. The neural network model is trained with the input parameters being the motor surface temperature and the ambient temperature of the motor, and the output being the internal temperature of the motor. The internal and external temperature data of the motor and the ambient temperature data of the motor are obtained through pre-experimentation as training sets to train and test the neural network model. After updating the network model parameters, the trained neural network model is deployed in the data acquisition and control module. When predicting the internal temperature of the motor, the neural network model is called to predict and output the corresponding predicted temperature data.

[0022] The advantages of this invention are: it is suitable for non-contact, uninterrupted real-time online monitoring and display of the temperature of various parts of a motor in industrial environments, and automatically compares the real-time data with set values. If the set value is exceeded, an output signal drives the audible and visual alarm on the device to alert the operator. After confirming the alarm, the on-site operator can cancel the alarm on the touch screen. Alarm limits can be set on the touch screen. Simultaneously, it can also output switch signals to the motor protection circuit for motor protection. All temperature monitoring signals support remote transmission to other automation systems. This invention is easy to install, simple and practical, requiring no instruments or sensors to be installed on the motor, no cabling, wiring, or programming configuration. It allows for real-time online temperature monitoring of various parts of the motor without affecting motor operation or the original overall structure, displaying real-time temperature, providing over-limit alarms, and protecting the motor's safe operation. Simultaneously, the detection data can be transmitted to other systems. Furthermore, this invention can be used in all occasions and equipment requiring uninterrupted temperature monitoring. The economic benefits are considerable. Attached Figure Description

[0023] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0024] Figure 1 This is a schematic diagram of the control system structure of the present invention;

[0025] Figure 2 This is a schematic diagram illustrating the early warning and alarm status judgment of the present invention;

[0026] Figure 3 This is a schematic diagram of the housing and glass window of the present invention.

[0027] The markings in the above figures are: 1. Box body; 2. Glass window. Detailed Implementation

[0028] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0029] The primary objective of this embodiment is to achieve non-contact motor temperature measurement, and to perform monitoring alarms and protection actions based on the measured temperature, as well as to acquire internal temperature and trigger protection alarms, thereby achieving more accurate and reliable monitoring. This embodiment employs a non-contact motor temperature monitoring system, utilizing infrared light for non-contact temperature detection of the motor's measured components. Through signal isolation, temperature data acquisition, analog-to-digital conversion, data processing, temperature display, parameter setting, over-limit alarm, trend recording, signal remote transmission, and protection actions, the system achieves automatic real-time monitoring and protection of the operating motor, while also meeting the need for remote transmission of monitoring data. This invention eliminates the need for installing any instruments or sensors on the motor, requires no cabling, wiring, or programming configuration, and does not affect the normal operation of the motor. It allows for free real-time online temperature monitoring of various parts of the motor, safeguarding its safe operation.

[0030] like Figure 1-3 As shown in this embodiment, a non-contact automatic motor temperature monitoring system and method are provided, wherein the system part includes an electrical control system installed inside a protective enclosure and an audible and visual alarm installed on the protective enclosure.

[0031] The protective enclosure is equipped with connectors for connecting infrared temperature sensors. These sensors detect the surface temperature of the motor and connect to the electrical control system via the connectors. The output of the electrical control system connects to an audible and visual alarm, which is activated based on the motor temperature data collected by the infrared temperature sensors. The audible and visual alarm is installed outside the protective enclosure for easy monitoring by personnel. The electrical control system, housed within the enclosure, protects the electrical components from the impact of complex factory environments on their lifespan and accuracy. The infrared sensors, needing to be aligned with the motor being measured, are located outside the enclosure. A standard connector is used to connect the infrared sensors to the internal electrical control system. The number of connectors corresponds one-to-one with the number of infrared sensors. However, multiple infrared sensors are typically used, allowing multiple sensors to collect temperature data from a single motor or multiple sensors to collect temperature data from multiple motors.

[0032] The electrical control system, as the core component of this application, is used to process the temperature data collected by the infrared sensor, and to trigger alarms and protective actions based on the processing results. To ensure its safe and reliable operation, it is housed in a protective enclosure to enhance the system's safety performance. The electrical control system includes a signal isolator, a data acquisition and control module, and a display. The motor surface temperature data collected by the infrared sensor is filtered by the signal isolator to remove interference signals before being sent to the data acquisition and control module. The data acquisition and control module processes the temperature data collected by the infrared temperature sensor to obtain the motor surface temperature and / or internal predicted temperature. The output of the data acquisition and control module is connected to the display to drive the display to show the motor surface temperature and / or internal predicted temperature. The displayed internal and external motor data provides accurate data support for monitoring personnel. The data acquisition and control module performs filtering, sampling, analog-to-digital conversion, data storage, and calculation on the detection signal, outputting a standard analog signal for remote transmission, an alarm signal for the alarm, and a contact signal for the motor protection circuit. Simultaneously, the data acquisition and control module displays the real-time temperature on a touchscreen via communication.

[0033] In this embodiment, the display screen is a touchscreen, which can display data, allow for manual data entry, and perform some manual operations. Because the touchscreen is located inside the protective enclosure, a glass window is provided on the enclosure to allow users to view temperature data without opening the enclosure. This glass window essentially replaces a portion of the enclosure with glass, so the enclosure remains a complete protective shell, but a part of it is transparent, allowing a view of the internal display screen. In this embodiment, the protective enclosure has an openable door, and the interior is hollow, used to house the electrical control system. Opening the door allows for operation of the touchscreen. The glass window on the door allows users to view the information on the touchscreen inside the enclosure, enabling them to see motor temperature data, etc., without opening the enclosure door.

[0034] The temperature threshold for motor alarms can be set via the touchscreen. The system compares the temperature threshold to determine the current motor temperature alarm or warning status, then drives the audible and visual alarm to issue an alarm signal. The output of the data acquisition and control module is connected to the audible and visual alarm, and the module drives the alarm's operation based on the motor's surface temperature and / or predicted internal temperature. When a motor temperature alarm or warning is detected, the alarm is activated in different states. For example, in an abnormal motor temperature alarm state, the audible and visual alarm emits a red light and a continuous alarm sound; in an abnormal motor temperature warning state, the alarm emits a yellow light and an intermittent alarm sound. After issuing an alarm signal, the monitoring personnel can cancel the alarm signal using the cancel alarm button on the touchscreen.

[0035] For judging alarm and warning status, such as Figure 2 As shown, if the internal temperature of the motor is greater than the first temperature threshold, it is determined to be an abnormal motor temperature alarm; otherwise, it is further determined whether the surface temperature of the motor is greater than the second temperature threshold. If so, it is determined to be an abnormal motor temperature alarm; otherwise, it is further determined whether the surface temperature of the motor is greater than the internal temperature of the motor. If the surface temperature of the motor is greater than the internal temperature of the motor, it is determined to be an abnormal motor temperature warning; if at this time it is determined that the surface temperature of the motor is not greater than the internal temperature of the motor, it is determined that the motor temperature is normal.

[0036] The data acquisition and control module outputs analog signals to the remote monitoring system for remote monitoring of motor data. The remote monitoring system includes a remote server, a large monitoring screen, and a remote monitoring mobile app, used to remotely monitor and view temperature and alarm data, facilitating remote monitoring of the motor temperature.

[0037] The data acquisition and control module outputs a switch signal to the motor protection circuit based on the motor's surface temperature and internal predicted temperature to protect the motor from temperature anomalies. When a motor temperature anomaly alarm is detected, a switch signal is output to the motor protection circuit to cut off power to the motor and stop its operation. If a temperature anomaly warning is detected, a timer begins at the start of the warning. If the timer reaches a set threshold and the warning is not cleared via the touchscreen or the temperature warning status remains unchanged, the motor temperature anomaly warning is changed to a temperature anomaly alarm. This temperature anomaly alarm then drives the motor protection circuit to protect the motor. The motor protection circuit includes a motor protection relay, which drives the power supply to control the motor's operation, thereby achieving the protective action.

[0038] The display screen is a touch screen, which is used to display data in real time, set alarm temperature threshold parameters and clear alarm signals on the touch screen. At the same time, it can display the recorded motor temperature data as a temperature change curve, which is convenient for users to view and use.

[0039] This embodiment also provides a monitoring method based on the automatic monitoring system in the above embodiments, a non-contact automatic monitoring method for motor temperature, including parameter setting steps, monitoring and alarm steps, and manual inspection steps, wherein:

[0040] The parameter setting steps include: inputting setting parameters via the touchscreen, including a first temperature threshold and a second temperature threshold, which are used for comparison to determine temperature abnormalities; simultaneously, using the touchscreen to control and display the temperature curve, and using the touchscreen to clear the alarm status, thus realizing the alarm clearing operation.

[0041] The monitoring and alarm process includes: processing temperature data transmitted from infrared sensors to obtain surface and internal temperature data of the motor, and displaying this data on a touchscreen; determining the motor's alarm status and issuing an alarm signal by comparing the surface and internal temperature data with their corresponding temperature thresholds; processing and displaying the data in the monitoring and alarm process; issuing an alarm signal based on the processed surface and internal temperature data to drive the alarm; simultaneously sending an alarm signal to the remote control system to achieve remote alarm and remote monitoring; and sending corresponding switching signals to the motor protection circuit to control the motor after an alarm, thereby achieving safety protection operations such as high-temperature power-off protection.

[0042] The manual inspection process includes: the data acquisition and control module processes the temperature data collected and uploaded by the infrared sensor to obtain and store the surface and internal temperature data of the motor; during inspection, the alarm temperature data and the corresponding temperature change curve are displayed via the touch screen, or the alarm is cleared by operating the touch screen.

[0043] When the motor is detected to be in a temperature alarm state based on the collected infrared sensor temperature data, the data acquisition control module outputs a shutdown control signal to the motor protection circuit to shut down the motor's operating circuit. Based on the temperature data collected by the infrared sensor, the collected temperature data is used as the motor's surface temperature data. The data acquisition control module then predicts and outputs the motor's internal temperature data based on the surface temperature data and the internal temperature data. Different alarms are triggered based on these two data points, including:

[0044] If the internal temperature of the motor exceeds the first temperature threshold, a motor temperature abnormality alarm is triggered. Otherwise, the system further checks if the motor surface temperature exceeds the second temperature threshold. If it does, a motor temperature abnormality alarm is triggered. Otherwise, the system further checks if the motor surface temperature exceeds the internal temperature. If the surface temperature exceeds the internal temperature, a motor temperature abnormality warning is triggered. If the surface temperature does not exceed the internal temperature, the motor temperature is considered normal. The first and second temperature data are entered into the Tonggong touchscreen and can be adjusted according to the motor's operating parameters.

[0045] When the alarm state is determined to be abnormal motor temperature, the alarm is issued through the alarm device, the output switch signal is sent to the motor protection circuit to disconnect the motor and send a remote alarm signal.

[0046] If an abnormal motor temperature warning is detected, a predictive strategy is employed to send a remote warning signal to the monitoring system, reminding the user to process the warning signal promptly. Further, coordinated cooling equipment, including air conditioners and fans, is activated to cool the motor's operating environment, reducing the external surface temperature of the motor. If the duration reaches a time threshold and the surface temperature remains in the warning state without being detected and the alarm being cleared via the touchscreen, the motor temperature warning state transitions to a motor temperature alarm state. The alarm strategy for the motor alarm state is then applied to trigger an alarm, thus promptly alerting the user to the abnormal temperature situation.

[0047] Motor temperature anomaly alarms and warnings are displayed on a touchscreen, providing basic reference information for inspection. Internal temperature prediction utilizes a pre-trained neural network model. The model is trained with input parameters of motor surface temperature and ambient temperature, and output as the motor's internal temperature. Pre-testing is conducted to obtain internal and external motor temperature data, along with ambient temperature data, as a training set to train and test the neural network model. The trained model is then deployed in the data acquisition and control module. When predicting the motor's internal temperature, the neural network model is invoked to output the predicted temperature data. During prediction, an infrared sensor acquires motor surface temperature data, and an ambient temperature sensor collects ambient temperature data. These two inputs are processed and sent to the data acquisition and control module. The control module then uses the neural network model, taking the ambient temperature and motor surface temperature as inputs, to predict the motor's internal temperature.

[0048] The non-contact motor temperature monitoring provided in this embodiment can not only achieve non-contact monitoring, but also predict the internal temperature based on the monitored surface temperature, and perform different alarm controls based on the temperature difference between the surface and internal temperatures, thereby achieving more accurate temperature monitoring and alarm.

[0049] This invention is a non-contact automatic motor temperature monitoring system, consisting of six parts arranged in a single enclosure made of stainless steel, suitable for wall mounting. It effectively adapts to harsh industrial environments. An audible and visual alarm is fixed to the top of the enclosure. Four pluggable infrared temperature sensor connectors are located at the bottom of the enclosure, allowing direct insertion of the infrared temperature sensors for easy installation and replacement. The enclosure has two protective doors. The outer door has a glass window on the front, allowing direct observation of the real-time temperature data displayed on the touchscreen on the inner door. The inner door has a fixed touchscreen and power button on the front; pressing the power button automatically starts the system without any additional operation, making it extremely convenient to use. Opening the inner door reveals the interior of the enclosure, which contains a circuit breaker, power conversion module, signal isolator, data acquisition and control module, intermediate relays, and terminal blocks, all connected via internal wiring. Once started, the entire system can perform non-contact temperature detection of various parts of the motor using infrared temperature sensors without affecting motor operation or the original overall structure. It features temperature display, parameter setting, over-limit alarm, trend recording, remote signal transmission, and protective actions, among other functions.

[0050] This invention discloses a non-contact automatic motor temperature monitoring system. The system comprises six parts, as detailed below:

[0051] 1. Infrared Temperature Sensor. The infrared temperature sensor uses the principle of infrared temperature sensing to perform non-contact temperature detection on the part to be monitored. This system is initially set with 4 infrared temperature sensors (more can be added if needed). It uses infrared to monitor the temperature of parts such as the motor housing and bearings in real time. The infrared temperature sensors are connected to the wiring terminals inside the box via plug-in connectors.

[0052] 2. Signal Isolator. The infrared temperature sensor directly outputs a 4-20mA standard signal to the signal isolator through the system terminals. The signal isolator filters out interference signals and sends the detection signal to the data acquisition and control module.

[0053] 3. Data Acquisition and Control Module. The data acquisition and control module performs filtering, sampling, analog-to-digital conversion, data storage, and computation on the detected signals. It outputs a standard analog signal for remote transmission, an alarm signal for the alarm unit, and a contact signal for the motor protection circuit. Simultaneously, the data acquisition and control module displays the real-time temperature on a touchscreen via communication.

[0054] 4. Touchscreen (Display). The touchscreen displays real-time temperature, stores temperature data, and allows users to view and view temperature change trends. Alarm limits and other parameters can be set and alarms can be cleared on the touchscreen.

[0055] 5. Alarm. The real-time temperature is compared with the alarm limit set on the touch screen. If the limit is exceeded, the data acquisition and control module outputs a signal to the alarm, generating an audible and visual alarm to alert relevant personnel to handle the abnormality.

[0056] 6. Power Supply. Mains power or UPS power is used, and the power conversion module converts it into the system's operating power.

[0057] This system primarily provides non-contact, continuous, real-time online monitoring and display of temperatures across various parts of a motor in industrial environments. It automatically compares real-time data with set values; if the set value is exceeded, a signal is output to activate an audible and visual alarm on the device, alerting the operator to take action. After confirming the alarm, the operator can cancel it via a touchscreen. Alarm limits can be set on the touchscreen. Simultaneously, it can output switch signals to the motor protection circuit for motor protection. All temperature monitoring signals can be remotely transmitted to other automation systems.

[0058] This system can provide at least two days of historical and real-time temperature trend records for easy retrieval and review. Temperature data is stored in the memory and can be displayed via a touchscreen for convenient viewing.

[0059] This invention is easy to install, simple and practical. It requires no instruments or sensors installed on the motor, and eliminates the need for cabling, wiring, or programming configuration. It allows for real-time online temperature monitoring of various parts of the motor without affecting motor operation or the original overall structure, displaying real-time temperature, issuing over-limit alarms, and ensuring safe motor operation. Simultaneously, the monitoring data can be transmitted to other systems. Furthermore, this invention can be used in all situations and equipment requiring uninterrupted temperature monitoring. The economic benefits are considerable.

[0060] 1. In this embodiment, a box structure needs to be designed, including a stainless steel box with two protective doors. One door opens on one side and has a glass observation window. The temperature display on the touch screen fixed on the inner door can be observed without opening the door. An alarm is installed on the top of the box, which will generate an audible and visual alarm when triggered.

[0061] 2. Open the outer casing door. An opening on the inner door reveals a touchscreen and power button. Pressing the start button will automatically start the system. The touchscreen allows manual switching between temperature display, alarm settings, and temperature trend displays. Alarm silencing is also available.

[0062] 3. Open the inner door of the box. Inside the box, there is a guide rail, on which are installed a power switch, a power conversion module, an isolator, a data acquisition and control module, an intermediate relay, and wiring terminals.

[0063] 4. Configure the data acquisition and control module and touch screen, and write basic programs.

[0064] 5. The components are connected by wires to form a system.

[0065] The above structure enables the design and installation of the enclosure structure of this application, thereby realizing the specific design and implementation of the monitoring system and solution corresponding to this embodiment.

[0066] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A non-contact automatic motor temperature monitoring system, characterized in that: The device includes an electronic control system housed within a protective enclosure and an audible and visual alarm mounted on the enclosure. The protective enclosure is equipped with a connector for an infrared temperature sensor. The infrared temperature sensor detects the surface temperature of the motor and is connected to the electronic control system via the connector. The output of the electronic control system is connected to the audible and visual alarm, and the electronic control system drives the alarm to emit an alarm signal based on the motor temperature data collected by the infrared temperature sensor. The electronic control system includes a signal isolator, a data acquisition and control module, and a display. The motor surface temperature data collected by the infrared temperature sensor is filtered by the signal isolator to remove interference signals before being sent to the data acquisition and control module. The data acquisition and control module is used to process the temperature data collected by the infrared temperature sensor to obtain the motor surface temperature and the internal predicted temperature. The output of the data acquisition and control module is connected to the display to drive the display to show the motor surface temperature and / or the internal predicted temperature.

2. The non-contact automatic motor temperature monitoring system as described in claim 1, characterized in that: The output of the data acquisition and control module is connected to the audible and visual alarm. The data acquisition and control module drives and controls the working state of the audible and visual alarm based on the surface temperature of the motor and the predicted internal temperature.

3. The non-contact automatic motor temperature monitoring system as described in claim 1 or 2, characterized in that: The data acquisition and control module outputs analog signals to the remote monitoring system to enable remote monitoring of motor data.

4. A non-contact automatic motor temperature monitoring system as described in claim 1 or 2, characterized in that: The data acquisition and control module outputs a switching signal to the motor protection circuit based on the motor surface temperature and the internal predicted temperature, in order to protect the motor from abnormal temperature.

5. The non-contact automatic motor temperature monitoring system as described in claim 1, characterized in that: The display screen is a touch screen, which is used to display data in real time and to set alarm temperature threshold parameters and cancel alarm signals on the touch screen.

6. A non-contact automatic motor temperature monitoring system as described in claim 1 or 2, characterized in that: The protective enclosure is equipped with a glass window, through which users can observe the information displayed on the screen inside the enclosure.

7. A non-contact automatic temperature monitoring method for motors, wherein the monitoring method is used in a non-contact automatic temperature monitoring system for motors as described in any one of claims 1-6; characterized in that: The monitoring method includes parameter setting steps and monitoring alarm steps; The parameter setting steps include: inputting and setting parameters via touchscreen; Monitoring and alarm steps: The temperature data transmitted by the infrared sensor is processed to obtain the surface temperature data and internal temperature data of the motor, which are then displayed on the touch screen; the alarm status of the motor is determined by comparing the surface temperature and internal temperature data of the motor with their corresponding temperature thresholds, and an alarm signal is issued.

8. The non-contact automatic temperature monitoring method for motors as described in claim 7, characterized in that: The monitoring method also includes a manual inspection step: the data acquisition and control module processes the temperature data collected and uploaded by the infrared sensor to obtain and store the surface and internal temperature data of the motor; during inspection, the alarm temperature data and the corresponding temperature change curve are displayed through the touch screen, or the alarm is cleared by operating the touch screen.

9. A non-contact automatic motor temperature monitoring method as described in claim 6 or 7, characterized in that: When the motor is determined to be in a temperature alarm state based on the collected infrared sensor temperature data, the data acquisition and control module outputs a shutdown control signal to the motor protection circuit to shut down the motor's operating circuit.

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