CN118739974A - A non-contact motor temperature automatic monitoring system and method - Google Patents
A non-contact motor temperature automatic monitoring system and method Download PDFInfo
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- CN118739974A CN118739974A CN202410819521.3A CN202410819521A CN118739974A CN 118739974 A CN118739974 A CN 118739974A CN 202410819521 A CN202410819521 A CN 202410819521A CN 118739974 A CN118739974 A CN 118739974A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/60—Controlling or determining the temperature of the motor or of the drive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/03—Arrangements for indicating or recording specially adapted for radiation pyrometers
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Emergency Alarm Devices (AREA)
Abstract
本发明公开了一种非接触式电机温度自动监控系统及方法，所述系统包括设置在保护箱体内的电控系统以及设置在保护箱体上的声光报警器；所述保护箱体上设置有红外温度传感器连接用的接头；所述红外温度传感器用于检测电机的表面温度数据，其通过接头连接至电控系统；所述电控系统的输出端连接至声光报警器，所述电控系统用于根据红外温度传感器采集的电机的温度数据进行驱动声光报警器发出报警信号。本发明的优点在于：适用于工业环境下对电机的各部位温度进行非接触式不间断实时在线检测并显示，并自动对实时数据与设定值进行比较，超过设定值则输出信号驱动装置上的声光报警器，以提醒操作人员关注并处理。
The present invention discloses a non-contact motor temperature automatic monitoring system and method, the system includes an electric control system arranged in a protective box and an audible and visual alarm arranged on the protective box; the protective box 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 is connected to the electric control system through the connector; the output end of the electric control system is connected to the audible and visual alarm, and the electric control system is used to drive the audible and visual alarm to send out an alarm signal according to the temperature data of the motor collected by the infrared temperature sensor. The advantages of the present invention are: it is suitable for non-contact, uninterrupted, real-time online detection and display of the temperature of various parts of the motor in an industrial environment, and automatically compares the real-time data with the set value. If the set value is exceeded, the audible and visual alarm on the output signal driving device is used to remind the operator to pay attention and handle it.
Description
Technical Field
The invention relates to the field of automatic detection of motor temperature, in particular to a non-contact automatic motor temperature monitoring system and method.
Background
At present, the temperature of a motor is generally monitored by embedding a temperature sensor in a motor coil and inserting a resistor rod into the surface of a bearing, and the temperature needs to be monitored by contacting a measured part. This monitoring approach has 3 problems: firstly, the motor temperature monitoring must contact the measured object and need to rely on a display instrument or a control system to display the temperature, and complicated processes such as cabling, wiring, programming configuration and the like are needed, which cannot be finished by non-professional staff. Secondly, when the temperature sensor fails, the motor shell must be shut down and disassembled for replacement, so that production is affected, and the replacement work is time-consuming and labor-consuming. And thirdly, some motors are not provided with temperature sensors when leaving the factory, so that temperature monitoring cannot be performed, motor faults cannot be found in time, and accidents are caused.
The non-contact temperature measurement is adopted to detect the temperature, but in the industrial production field, how to design the detection alarm of the non-contact temperature sensor and how to ensure the non-contact temperature monitoring protection and the alarm action is the technical problem to be solved; in addition, the non-contact detection can only detect the surface temperature, and in practice, when the motor is protected, the internal temperature data is also required to be considered, and how to comprehensively consider and realize the non-contact motor temperature monitoring, so that the effective protection of the electrode is a technical problem which cannot be solved in the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a non-contact motor temperature automatic monitoring system and a non-contact motor temperature automatic monitoring method, adopts the non-contact motor temperature monitoring system, the infrared ray is utilized to carry out non-contact temperature detection on the detected part of the motor, and the automatic real-time monitoring and protection of the running motor are realized through various processes of a system such as signal isolation, temperature data acquisition, analog-to-digital conversion, data processing, temperature display, parameter setting, overrun alarm, trend recording, signal remote transmission, protection action and the like.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the non-contact automatic motor temperature monitoring system comprises an electric control system arranged in a protective box body and an audible and visual alarm arranged on the protective box body; the protection box body is provided with a connector for connecting the infrared temperature sensor; the infrared temperature sensor is used for detecting surface temperature data of the motor and is connected to the electric control system through a joint; the output end of the electric control system is connected to the audible and visual alarm, and the electric control system is used for driving the audible and visual alarm to send an alarm signal according to the temperature data of the motor acquired by the infrared temperature sensor.
The electric control system comprises a signal isolator, a data acquisition control module and a display, wherein the motor surface temperature data acquired by the infrared sensor is used for filtering interference signals through the signal isolator and then sending signals to the data acquisition control module, the data acquisition control module is used for obtaining the motor surface temperature and/or the internal prediction temperature by data of the temperature data acquired by the infrared temperature sensor, and the output end of the data acquisition control module is connected to the display and used for driving the display to display the motor surface temperature and/or the internal prediction temperature.
The output end of the data acquisition control module is connected to the audible and visual alarm, and the data acquisition control module drives and controls the working state of the audible and visual alarm according to the surface temperature and the internal prediction temperature of the motor.
The data acquisition control module outputs analog quantity signals to the remote monitoring system and is used for realizing remote monitoring of motor data.
The data acquisition control module outputs a switching value signal to the motor protection loop according to the surface temperature and the internal prediction temperature of the motor, and is used for protecting the abnormal temperature of the motor.
The display screen is a touch screen, and the touch screen is used for displaying data in real time, setting alarm temperature threshold parameters on the touch screen and eliminating alarm signals through operation.
And the protection box body is provided with a glass window, and a user observes display screen information in the box body through the glass window.
A non-contact motor temperature automatic monitoring method comprises a parameter setting step and a monitoring alarm step; wherein the parameter setting step comprises: inputting setting parameters through a touch screen;
Monitoring and alarming: processing the temperature data transmitted by the infrared sensor to obtain surface temperature data and internal temperature data of the motor, and displaying the surface temperature data and the internal temperature data through a touch screen; and judging the alarm state of the motor by respectively comparing the surface temperature and the internal temperature data of the motor with the corresponding temperature threshold values and sending out alarm signals.
The monitoring method further comprises the step of manually checking: the data acquisition control module acquires and processes the uploaded temperature data according to the infrared sensor to obtain the surface and internal temperature data of the motor and stores the surface and internal temperature data; when the alarm temperature data is used for checking, the alarm temperature data and the corresponding temperature change curve are controlled to be displayed through the touch screen, or the alarm is eliminated through operating the touch screen.
When the motor is judged to be in temperature alarm according to the collected temperature data of the infrared sensor, the data collection control module outputs a turn-off control signal to the motor protection loop to turn off the motor working loop.
According to the temperature data that infrared sensor gathered, regard the temperature data that gathers as motor surface temperature data, the inside temperature data of motor is output in data acquisition control module prediction according to surface temperature data, carries out different warning to the motor based on motor surface temperature data and inside temperature data, and specific warning includes:
When the internal temperature of the motor is greater than a first temperature threshold, judging that the temperature of the motor is abnormal and alarming; otherwise, further judging whether the surface temperature of the motor is greater than a second temperature threshold value, if so, judging that the temperature of the motor is abnormal and alarming; if not, whether the surface temperature of the motor is greater than the internal temperature of the motor is further judged, and if so, abnormal early warning of the temperature of the motor is judged; if the surface temperature of the motor is not larger than the internal temperature of the motor, the motor is judged to be normal.
When the motor temperature abnormality alarming state is judged, an alarm is sent out through an alarm, and a switch signal is output to a motor protection loop to disconnect the motor and send out a remote alarm signal;
If the abnormal temperature early warning of the motor is judged, a prediction strategy is adopted at the moment, a remote early warning signal is sent to a monitoring system, a user is reminded of timely processing the early warning signal, and further linkage cooling equipment is used for cooling the working environment of the motor.
The motor temperature abnormality alarm and the motor temperature abnormality early warning display alarm information and types through a touch screen on site, and basic reference information is provided for inspection.
The internal prediction temperature adopts a pre-trained neural network model, the neural network model is trained, the input parameters of the configuration neural network model are the surface temperature of the motor, the environment temperature of the motor and the output of the configuration neural network model are the internal temperature of the motor, the internal and external temperature data of the motor and the environment temperature data of the motor are obtained through a pre-test and are used as a training set to train and test the neural network model, the trained neural network model is obtained by updating the network model parameters, the trained neural network model is deployed in a data acquisition control module, and the neural network model is called to predict and output corresponding prediction temperature data when the internal temperature of the motor is predicted.
The invention has the advantages that: the non-contact uninterrupted real-time on-line detection and display device is suitable for non-contact uninterrupted real-time on-line detection and display of the temperature of each part of the motor in an industrial environment, real-time data is automatically compared with a set value, and if the temperature exceeds the set value, an audible and visual alarm on a signal driving device is output so as to remind operators of paying attention to and processing the temperature. After confirming the alarm, the field operator can cancel the alarm by operating on the touch screen. An alarm limit may be set on the touch screen. Meanwhile, the switching value can be output to a motor protection loop to act on motor protection. All temperature monitoring signals support remote transmission to other automation systems. The invention has the advantages of convenient installation, simplicity and practicability, no need of installing any instrument and sensor on the motor, no need of cabling, wiring and programming configuration, capability of freely carrying out real-time online temperature monitoring on each part of the motor under the condition of not affecting the operation of the motor and the original integral structure, displaying real-time temperature, temperature overrun alarm and guard motor safe operation, and simultaneously being capable of remotely transmitting detection data to other systems. Besides, the invention can be used for all occasions and equipment with uninterrupted temperature monitoring requirements. The economic benefit is considerable.
Drawings
The contents of the drawings and the marks in the drawings of the present specification are briefly described as follows:
FIG. 1 is a schematic diagram of a control system according to the present invention;
FIG. 2 is a schematic diagram of early warning and alarm state judgment according to the present invention;
FIG. 3 is a schematic view of the box and glass window of the present invention.
The labels in the above figures are: 1. a case; 2. and (5) windowing glass.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings, which illustrate preferred embodiments of the invention in further detail.
The main purpose of the embodiment is to realize non-contact motor temperature measurement, and simultaneously monitor and alarm, protection action, internal temperature acquisition and protection alarm action based on the measured temperature, so as to realize the purpose of more accurate and reliable monitoring. In the embodiment, a non-contact motor temperature monitoring system is adopted, and the infrared rays are utilized to carry out non-contact temperature detection on a detected part of the motor, and the automatic real-time monitoring and protection of the running motor can be realized through various processes of systems such as signal isolation, temperature data acquisition, analog-to-digital conversion, data processing, temperature display, parameter setting, overrun alarm, trend recording, signal remote transmission, protection action and the like, and meanwhile, the requirement of monitoring data remote transmission can be met. According to the invention, any instrument and sensor are not required to be installed on the motor, no cable, wiring and programming configuration are required, the normal operation of the motor is not influenced, the real-time online temperature monitoring can be freely carried out on each part of the motor, and the safe operation of the motor is protected.
As shown in fig. 1-3, a non-contact automatic motor temperature monitoring system and method in this embodiment, wherein the system part includes an electric control system disposed in a protective case and an audible and visual alarm disposed on the protective case;
The protection box body is provided with a connector for connecting the infrared temperature sensor; the infrared temperature sensor is used for detecting surface temperature data of the motor and is connected to the electric control system through a joint; the output end of the electric control system is connected to the audible and visual alarm, and the electric control system is used for driving the audible and visual alarm to send an alarm signal according to the temperature data of the motor acquired by the infrared temperature sensor. The audible and visual alarm is arranged outside the protective box body, so that monitoring personnel can acquire alarm sounds or alarm lights in time; the electric control system part is arranged in the protection box body to protect the electric elements, so that the influence on the service life, the working accuracy and the like of the electric elements due to complex field environments such as factories and the like is avoided; the infrared sensor needs to be arranged outside the box body because the infrared sensor is to be aligned with the motor to be tested, and meanwhile, a connector is arranged for connecting the infrared sensor with an internal electric control system, and the connector is a standard connector and is used for connecting the electric control system with the infrared sensor. Wherein the number of the joints corresponds to the number of the infrared sensors one by one; the number of the infrared sensors is more than one, and a plurality of infrared sensors are arranged, so that the plurality of infrared sensors can collect the temperature of one motor or the plurality of infrared sensors can collect the temperature of a plurality of motors corresponding to the plurality of motors.
The electronic control system is used as a core component of the application and is used for processing the temperature data acquired by the infrared sensor, alarming, protecting and the like according to the processing result, and the electronic control system is arranged in the protecting box body for protecting in order to ensure the safe and reliable operation of the electronic control system, so that the safety performance of the system is improved. The electric control system comprises a signal isolator, a data acquisition control module and a display, wherein the motor surface temperature data acquired by the infrared sensor is filtered by the signal isolator to remove interference signals, then the signals are sent to the data acquisition control module, and the data acquisition control module is used for carrying out data on the temperature data acquired by the infrared temperature sensor to obtain the motor surface temperature and/or internal prediction temperature; the output end of the data acquisition control module is connected to the display and used for driving the display to display the surface temperature and/or the internal predicted temperature of the motor. The displayed internal and external data of the motor can provide accurate data support for monitoring personnel; the data acquisition control module carries out the processes of filtering, sampling, analog-to-digital conversion, data storage, operation and the like on the detection signals, outputs analog standard signals to remote transmission, outputs alarm signals to an alarm, and outputs contact signals to a motor protection loop. Meanwhile, the data acquisition control module displays real-time temperature on the touch screen in a communication mode.
The display screen adopts a touch screen in the embodiment, so that the display of data, the manual data input and some manual control can be realized; because the touch screen is arranged in the protective case, in order to facilitate a user to view temperature data without opening the case, a glass window is arranged on the case, and the glass window is actually to replace a part of the case with glass, so that the case is still a complete protective case, only a part of the case is transparent to glass, and the display screen inside the case can be seen; the touch screen can be controlled by opening the box door; the box door is provided with a glass window, information of a touch screen in the box body can be seen through the glass window, and temperature data of the motor can be seen under the condition that the box door is not required to be opened.
The temperature threshold value of the motor alarm can be set through the touch screen, the temperature alarm or early warning state of the motor at the moment can be judged according to the comparison of the temperature threshold value, and then the audible and visual alarm is driven and controlled to send out an alarm signal; the output end of the data acquisition control module is connected to the audible and visual alarm, and the data acquisition control module drives and controls the working state of the audible and visual alarm according to the surface temperature and/or the internal predicted temperature of the motor. When the motor temperature alarm or the motor temperature early warning is judged, respectively controlling the alarm to alarm through different states; when the temperature of the motor is abnormal and the alarm state is reached, the audible and visual alarm is driven to emit red light and emit continuous alarm sounds; when the temperature of the motor is abnormal and early-warned, the audible and visual alarm is driven to emit yellow light and emit intermittent alarm sounds. After sending out the alarm signal, the monitoring personnel cancel the alarm signal through a cancel alarm button on the touch screen.
For the judgment of the alarm and early warning states, as shown in fig. 2, when the internal temperature of the motor is greater than a first temperature threshold value, judging that the temperature of the motor is abnormal; otherwise, further judging whether the surface temperature of the motor is greater than a second temperature threshold value, if so, judging that the temperature of the motor is abnormal and alarming; if not, whether the surface temperature of the motor is greater than the internal temperature of the motor is further judged, and if so, abnormal early warning of the temperature of the motor is judged; if the surface temperature of the motor is not larger than the internal temperature of the motor, the motor is judged to be normal.
The data acquisition control module outputs analog quantity signals to a remote monitoring system for realizing remote monitoring of motor data. The remote monitoring system comprises a remote server, a large monitoring screen, a remote monitoring mobile phone app and other devices, and is used for monitoring and checking temperature data and alarm data remotely, so that remote monitoring operation on motor temperature is conveniently realized.
The data acquisition control module outputs a switching value signal to the motor protection loop according to the surface temperature and the internal prediction temperature of the motor, and is used for protecting the abnormal temperature of the motor. When judging that the motor temperature abnormality alarm exists, outputting a switching value signal to a motor protection loop, so as to perform power-off protection on the motor and stop the motor; when the motor judges that the temperature is abnormal and early-warning, timing is started aiming at the early-warning beginning, when the timing time reaches a set time threshold, the state of eliminating the early-warning or the temperature early-warning through the touch screen is still not detected to be unchanged, the temperature abnormal and early-warning of the motor is changed into temperature abnormal and early-warning at the moment, and a motor protection loop is driven to protect the motor through the temperature abnormal and early-warning. The motor protection loop comprises a motor protection relay, and the motor protection relay is used for driving and controlling the working power supply of the motor so as to realize the protection action of the motor.
The display screen is a touch screen, the touch screen is used for displaying data in real time, setting alarm temperature threshold parameters and operating elimination alarm signals on the touch screen, and meanwhile, the recorded motor temperature data can be displayed in a temperature change curve mode, so that a user can conveniently check and use the temperature.
The embodiment also provides a monitoring method corresponding to the automatic monitoring system based on the embodiment, and the non-contact motor temperature automatic monitoring method comprises a parameter setting step, a monitoring alarm step and a manual checking step, wherein:
The parameter setting step comprises the following steps: recording setting parameters through a touch screen, wherein the setting parameters comprise a first temperature threshold value and a second temperature threshold value, and the temperature threshold values are used for comparing to judge temperature abnormality; meanwhile, the temperature curve is controlled and invoked through the touch screen to display and view, and the alarm state is eliminated through controlling the touch screen, so that alarm elimination operation is realized.
The monitoring and alarming step comprises the following steps: processing the temperature data transmitted by the infrared sensor to obtain surface temperature data and internal temperature data of the motor, and displaying the surface temperature data and the internal temperature data through a touch screen; judging the alarm state of the motor and sending an alarm signal by respectively comparing the surface temperature and the internal temperature data of the motor with the corresponding temperature threshold values, processing and displaying the data in the monitoring alarm step, sending the alarm signal according to the processed surface temperature data and the internal temperature data of the motor, and driving the alarm to alarm; simultaneously, an alarm signal is sent to a remote control system to realize remote alarm and remote monitoring; and sending a corresponding switching value signal to the motor protection loop to control the motor to work after alarming so as to realize the safety protection operation such as high-temperature power-off protection of the motor.
The step of manually checking comprises the following steps: the data acquisition control module acquires and processes the uploaded temperature data according to the infrared sensor to obtain the surface and internal temperature data of the motor and stores the surface and internal temperature data; when the alarm temperature data is used for checking, the alarm temperature data and the corresponding temperature change curve are controlled to be displayed through the touch screen, or the alarm is eliminated through operating the touch screen.
When the motor is judged to be in temperature alarm according to the collected temperature data of the infrared sensor, the data collection control module outputs a turn-off control signal to the motor protection loop to turn off the motor working loop. According to the temperature data that infrared sensor gathered, regard the temperature data that gathers as motor surface temperature data, the inside temperature data of motor is output in data acquisition control module prediction according to surface temperature data, carries out different warning to the motor based on motor surface temperature data and inside temperature data, and specific warning includes:
When the internal temperature of the motor is greater than a first temperature threshold, judging that the temperature of the motor is abnormal and alarming; otherwise, further judging whether the surface temperature of the motor is greater than a second temperature threshold value, if so, judging that the temperature of the motor is abnormal and alarming; if not, whether the surface temperature of the motor is greater than the internal temperature of the motor is further judged, and if so, abnormal early warning of the temperature of the motor is judged; if the surface temperature of the motor is not larger than the internal temperature of the motor, the motor is judged to be normal. The first temperature data and the second temperature data are data input by a child touch screen, and the setting can be adjusted according to the working parameters of the motor.
When the motor temperature abnormality alarming state is judged, an alarm is sent out through an alarm, and a switch signal is output to a motor protection loop to disconnect the motor and send out a remote alarm signal;
If the abnormal early warning of the motor temperature is judged, a prediction strategy is adopted at the moment, a remote early warning signal is sent to a monitoring system, a user is reminded to timely process the early warning signal, further linkage cooling equipment is used for cooling the working environment of the motor, the linkage cooling equipment comprises cooling equipment such as an air conditioner and a fan, cooling of the outer surface temperature of the motor is realized, if the duration reaches a time threshold, the surface temperature is still in an early warning state and no alarm elimination through a touch screen is detected, the early warning state of the motor temperature is converted into an alarm state of the motor temperature at the moment, the alarm strategy in the alarm state of the motor is adopted for alarming, and therefore the abnormal condition of the motor temperature is timely reminded to the user.
The motor temperature abnormality alarm and the motor temperature abnormality early warning display alarm information and types through a touch screen on site, and basic reference information is provided for inspection. The internal prediction temperature adopts a pre-trained neural network model, the neural network model is trained, the input parameters of the configuration neural network model are the surface temperature of the motor, the environmental temperature data of the motor, the output is the internal temperature of the motor, the internal and external temperature data of the motor and the environmental temperature data are obtained through a pre-test, the training test is carried out on the neural network model by taking the pre-test as a training set, the network model parameters are updated to obtain the trained neural network model, the trained neural network model is deployed in a data acquisition control module, and the neural network model is called to predict and output corresponding prediction temperature data when the internal temperature of the motor is predicted. During prediction, the surface temperature data of the motor is acquired through the infrared sensor, the environmental temperature data is acquired through the environmental temperature sensor, the two inputs are processed and sent to the data acquisition control module, and the control module invokes the neural network model to realize the prediction output of the internal temperature of the motor through the input environmental temperature and the surface temperature of the motor.
The non-contact motor temperature monitoring provided by the embodiment not only can realize non-contact monitoring, but also can predict the internal temperature based on the monitored surface temperature, and different alarm control is performed based on the temperature difference between the surface and the internal temperature, so that more accurate temperature monitoring and alarm are realized.
The invention relates to a non-contact type automatic motor temperature monitoring system, which consists of 1 box body composed of 6 parts, wherein the box body is made of stainless steel materials and can be installed on a wall. Can effectively adapt to the severe environment of the industrial field. An audible and visual alarm is fixed at the top of the box body. 4 pluggable infrared temperature sensor connectors are distributed at the bottom of the box body, and the infrared temperature sensor can be directly plugged into the connectors, so that the sensor is convenient to install and replace. The box is equipped with 2 protective doors, and the outside door openly has glass to open the window, can direct observation internal door on the real-time temperature data that touch-sensitive screen shows, and the door openly is fixed with touch-sensitive screen and power button in the inside, and operating personnel presses power button and can start the system operation automatically and need not unnecessary operation, and it is extremely convenient to use. The inner door is opened, namely the inside of the box body, and is provided with an idle switch, a power supply conversion module, a signal isolator, a data acquisition control module, an intermediate relay, a wiring terminal and the like, which are connected through an internal wiring. After the whole system is started, the non-contact temperature detection can be carried out on each part of the motor through the infrared temperature sensor under the condition that the operation of the motor and the original integral structure are not affected, and the motor has the functions of temperature display, parameter setting, overrun alarm, trend recording, signal remote transmission, protection action and the like.
The invention relates to a non-contact motor temperature automatic monitoring system. The system comprises 6 parts, specifically the following:
1. An infrared temperature sensor. The infrared temperature sensor is aligned to the part to be monitored by utilizing the infrared temperature sensing principle to perform non-contact temperature sensing detection. The system is initially provided with 4 infrared temperature sensors (which can be increased if needed), the temperature of the motor shell, the bearing and other parts is monitored in real time in an infrared mode, and the infrared temperature sensors are connected into the connecting terminals in the box body through plug-in connectors.
2. A signal isolator. The infrared temperature sensor directly outputs a 4-20mA standard signal to the signal isolator through the system wiring terminal, and the signal isolator filters interference signals and sends detection signals to the data acquisition control module.
3. And the data acquisition control module. The data acquisition control module carries out the processes of filtering, sampling, analog-to-digital conversion, data storage, operation and the like on the detection signals, outputs analog standard signals to remote transmission, outputs alarm signals to an alarm, and outputs contact signals to a motor protection loop. Meanwhile, the data acquisition control module displays real-time temperature on the touch screen in a communication mode.
4. Touch screens (displays). The touch screen displays real-time temperature, stores temperature data, and reads and displays the temperature change trend. Parameters such as alarm limit value and the like can be set on the touch screen, and alarm operation is eliminated.
5. An alarm. The real-time temperature is compared with an alarm limit value set on the touch screen, and when the temperature exceeds the limit value, a data acquisition control module outputs a signal to an alarm to generate an audible and visual alarm to remind related personnel of processing abnormality.
6. And a power supply. And a commercial power or UPS power supply is adopted and is converted into a system working power supply through a power supply conversion module.
The system mainly carries out non-contact uninterrupted real-time online detection and display on the temperature of each part of the motor in an industrial environment, automatically compares real-time data with a set value, and outputs an audible and visual alarm on a signal driving device when the real-time data exceeds the set value so as to remind operators of paying attention to and processing the temperature. After confirming the alarm, the field operator can cancel the alarm by operating on the touch screen. An alarm limit may be set on the touch screen. Meanwhile, the switching value can be output to a motor protection loop to act on motor protection. All temperature monitoring signals support remote transmission to other automation systems.
The system can provide the historical trend and the real-time trend record of the temperature for the lowest 2 days, is convenient to retrieve and review, stores the temperature data in a memory, and retrieves related data for display through a touch screen, thereby facilitating the realization of review.
The invention has the advantages of convenient installation, simplicity and practicability, no need of installing any instrument and sensor on the motor, no need of cabling, wiring and programming configuration, capability of freely carrying out real-time online temperature monitoring on each part of the motor under the condition of not affecting the operation of the motor and the original integral structure, displaying real-time temperature, temperature overrun alarm and guard motor safe operation, and simultaneously being capable of remotely transmitting detection data to other systems. Besides, the invention can be used for all occasions and equipment with uninterrupted temperature monitoring requirements. The economic benefit is considerable.
1. In this embodiment, a box structure is required to be designed, 1 stainless steel box is designed, 2 protective doors are provided, one side of the box is opened, a glass observation window is arranged on the door, the temperature display on a touch screen fixed on the inner door can be observed without opening the door, an alarm is arranged above the box, and an audible and visual alarm is generated after the alarm is triggered.
2. The outer box door is opened, a touch screen and a power button are arranged on the opening of the inner door of the box body, and the system operation can be automatically started by pressing the starting button. The touch screen can be used for switching temperature display pictures, alarm setting pictures and temperature trend pictures in a hand touch manner. Can give an alarm and mute.
3. The inner door of the box body is opened, a guide rail is arranged in the box body, and a power switch, a power conversion module, an isolator, a data acquisition control module, an intermediate relay and a wiring terminal are arranged on the guide rail.
4. And the configuration data acquisition control module and the touch screen are used for writing a basic program.
5. The components are connected through wires to form a system.
Through the structure, the design and the installation of the box body structure can be realized, so that the specific design and the embodiment of the monitoring system and the scheme corresponding scheme of the embodiment are realized.
It is obvious that the specific implementation of the present invention is not limited by the above-mentioned modes, and that it is within the scope of protection of the present invention only to adopt various insubstantial modifications made by the method conception and technical scheme of the present invention.
Claims (10)
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| CN117928737A (en) * | 2023-12-21 | 2024-04-26 | 深圳供电局有限公司 | Non-contact temperature detection device for dry-type transformer |
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| CN105092058A (en) * | 2015-05-12 | 2015-11-25 | 江苏宝亨新电气有限公司 | On-line temperature monitoring system for high tension switchgear, and monitoring method thereof |
| CN208638017U (en) * | 2018-08-03 | 2019-03-22 | 苏州三星显示有限公司 | Motor intelligent alarm protection system |
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