CN212323930U - Motor intelligence fortune dimension system - Google Patents

Motor intelligence fortune dimension system Download PDF

Info

Publication number
CN212323930U
CN212323930U CN202021355815.9U CN202021355815U CN212323930U CN 212323930 U CN212323930 U CN 212323930U CN 202021355815 U CN202021355815 U CN 202021355815U CN 212323930 U CN212323930 U CN 212323930U
Authority
CN
China
Prior art keywords
motor
data acquisition
sensor
module
communication module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202021355815.9U
Other languages
Chinese (zh)
Inventor
孙康
李名殷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Rich Mechanical & Electric Manufacturing Co ltd
Shanghai Electric Group Shanghai Electric Machinery Co Ltd
Original Assignee
Shanghai Rich Mechanical & Electric Manufacturing Co ltd
Shanghai Electric Group Shanghai Electric Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Rich Mechanical & Electric Manufacturing Co ltd, Shanghai Electric Group Shanghai Electric Machinery Co Ltd filed Critical Shanghai Rich Mechanical & Electric Manufacturing Co ltd
Priority to CN202021355815.9U priority Critical patent/CN212323930U/en
Application granted granted Critical
Publication of CN212323930U publication Critical patent/CN212323930U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses an intelligent operation and maintenance system of a motor, which comprises a sensor and a controller, wherein the sensor is used for collecting monitored information in the motor; the data acquisition part is connected with the sensor; the processing center is connected with the data acquisition part; the data acquisition part is provided with a power module, a processor and a communication module, and the data acquisition module is respectively connected with the communication module, the sensor and the power module. The utility model discloses a sensor realizes the real-time collection to motor each item parameter, and data transmission after will gathering gives data acquisition portion, data conversion and processing are carried out through data acquisition portion, make data can be reliable in time carry out long-range transmission, and simultaneously, combine database and intelligent terminal's application, can high efficiency, accurate reliable running state to the motor monitors and judges in advance, timely overhaul and maintain the motor, be convenient for carry out periodic and normalized management to the motor, and low cost, reliable performance, and convenient to popularize and popularize.

Description

Motor intelligence fortune dimension system
Technical Field
The utility model relates to a motor fortune dimension technical field, more specifically say, in particular to motor intelligence fortune dimension system.
Background
With the continuous development of the scientific technology, the motor has close relation in industrial and agricultural production, power system and industrial departments, and becomes the necessary driving force in the current social production. The normal operation of the motor ensures the safety, high efficiency, high quality and low consumption in the production and manufacturing process, and has important significance for the development of social production and social economy. However, the abnormal operation of the motor will not only damage the motor itself, but also cause the interruption of the whole industrial production, which brings great influence to the production efficiency. The motor is used as the most widely applied driving equipment in the modern society, and the management and the maintenance of the whole life cycle of the motor can realize remarkable economic and social benefits.
At present, the cost for realizing the permanent state monitoring is very expensive, and a plurality of circuits and components have complex structures and cannot be popularized in most motors, so that a plurality of motors are operated until the motors break down.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a motor intelligence fortune dimension system to solve the problem that can't monitor the motor among the prior art.
The utility model provides a pair of motor intelligence fortune dimension system, include: the sensor is arranged in the motor and used for acquiring monitored information in the motor; the data acquisition part is connected with the sensor and is used for receiving and transmitting the information acquired by the sensor; and the processing center is connected with the data acquisition part and used for receiving and processing the information sent by the data acquisition part, wherein the data acquisition part comprises a power module, a data acquisition module and a communication module, and the data acquisition module is respectively connected with the communication module, the sensor and the power module.
Optionally, the sensor includes an acceleration sensor, a current sensor and a temperature sensor, the acceleration sensor is arranged on the motor and used for collecting vibration signals of the motor, the current sensor is connected with a power supply of the motor and used for monitoring the current of the power supply in real time, the health condition of the motor is judged through the current change of the motor in the operation process, and the temperature sensor is arranged in the motor and used for collecting real-time temperature data of a bearing and a stator in the motor and acquiring the temperature conditions of all parts of the bearing and the stator of the motor, so that the health condition of the motor is evaluated.
Optionally, a first-level alarm, a second-level alarm and a third-level alarm are arranged in the processing center, the first-level alarm responds to the abnormal signal condition of any one type of sensor in the sensors, the second-level alarm responds to the abnormal signal condition of any two types of sensors in the sensors, and the third-level alarm responds to the abnormal signal condition of all types of sensors.
Optionally, the communication module includes a wireless transmission module, and the wireless transmission module may be at least one of a Lora communication module, an NB-iot communication module, and a 4G communication module.
Optionally, the communication module further comprises an antenna for enhancing the communication capability of the wireless transmission module.
Optionally, the power module comprises a power management module, a charging socket and a battery.
Optionally, the charging socket is a USB charging socket, and the battery is a lithium battery.
Optionally, the processing center includes a database, the database is connected to the data acquisition unit, and each performance parameter of the motor is stored in the database.
Optionally, the database is connected with the data acquisition part through an industrial internet of things.
Optionally, the processing center further includes an intelligent terminal, and the intelligent terminal can acquire information of the database and compare the information acquired by the data acquisition unit with information stored in the database in real time.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a sensor realizes the real-time collection to motor each item parameter, and data transmission after will gathering gives data acquisition portion, data conversion and processing are carried out through data acquisition portion, make data can be reliable in time carry out long-range transmission, and simultaneously, combine database and intelligent terminal's application, can high efficiency, accurate reliable running state to the motor monitors and judges in advance, timely overhaul and maintain the motor, be convenient for carry out periodic and normalized management to the motor, and low cost, reliable performance, and convenient to popularize and popularize.
Drawings
Fig. 1 is an application layout diagram of the intelligent operation and maintenance system of the motor in the embodiment of the present invention;
fig. 2 is the embodiment of the utility model provides an in the embodiment local structure schematic diagram of motor intelligence fortune dimension system.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upstream," "downstream," and the like, indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
An intelligent operation and maintenance system 1 for motors shown in fig. 1-2 comprises: the sensor 10 is arranged in the motor 00 and used for collecting monitored information in the motor 00; the data acquisition part 11 is connected with the sensor 10 and is used for receiving and transmitting the information acquired by the sensor 10; and the processing center 12 is connected with the data acquisition part 11 and is used for receiving and processing information sent by the data acquisition part 11, wherein the data acquisition part 11 comprises a power module 14, a data acquisition module 110 and a communication module 111, and the data acquisition module 110 is respectively connected with the communication module 111, the sensor 10 and the power module 14.
That is to say, the motor intelligent operation and maintenance system 1 mainly comprises a sensor 10, a data acquisition part 11 and a processing center 12, wherein the sensor 10 can acquire various information of the motor 00, such as vibration information, temperature information and the like, and can transmit the acquired information to the data acquisition part 11 in real time. Be equipped with data acquisition module 110 and communication module 111 in the data acquisition portion 11, data acquisition module 110 is connected with sensor 10, can receive the information that sensor 10 gathered to can handle information, can transmit the information after handling for communication module 111 moreover, carry out teletransmission with information through communication module 111. The power module 14 is connected to the data acquisition module 110 and is configured to supply power to the data acquisition module 110 and other components. The processing center 12 can receive the data sent by the data acquisition part 11, analyze the data in real time, monitor and pre-judge the states of various performance parameters of the motor 00, remotely diagnose faults, position the faults and analyze reasons, and realize intelligent maintenance of the motor 00.
Referring to fig. 2, in the present embodiment, the sensor 10 includes an acceleration sensor 100, a current sensor 102 and a temperature sensor 101, the acceleration sensor 100 is disposed on the motor 00 and is configured to collect a vibration signal of the motor 00, the current sensor 102 is connected to a power supply of the motor 00 and is configured to monitor a current of the power supply in real time, and determine a health condition of the motor 00 according to a current change in an operation process of the motor 00, and the temperature sensor 101 is disposed in the motor 00 and is configured to collect real-time temperature data of a bearing 02 and a stator 01 in the motor 00 and acquire a temperature condition of each part of the bearing 02 and the stator 01 in the operation of the motor 00, so as to evaluate the health condition of the motor 00. Under the normal use condition of the motor 00, reasonable vibration data, temperature data and current data are provided, and when the sensor 10 monitors that one of the parameters is abnormal, the processing center 12 can find a problem and remind a worker to overhaul.
Specifically, in this embodiment, the acceleration sensor 100 is a three-axis acceleration sensor, and can detect signals of acceleration, speed, and displacement of the motor 00, so as to monitor the vibration condition of the motor 00. The processing center can acquire vibration data of the motor operation through the acceleration sensor 100, and evaluate the health state of the motor from a mechanical angle through a frequency domain analysis method. Specifically, the spectrum analysis technique: when the motor runs abnormally or in fault, such as unbalanced and misaligned rotors and faults of bearing abrasion, peeling and the like, the abnormal vibration is inevitably caused. Signal time domain analysis (such as amplitude, significance, kurtosis, etc.) can only monitor the faults that are more apparent in the middle and late stages. Frequency domain analysis may identify weak or potential faults at an early stage. The vibration signal is subjected to fourier transform, fault features are extracted from the complex detection signal, and data comparison is performed with the database 120 of the processing center 12, so that fault diagnosis is performed.
Specifically, in this embodiment, the temperature sensor 101 is PT100, and is disposed inside the motor 00, and is configured to acquire real-time temperature data of the bearing 02 and the stator 01 inside the motor 00, and acquire temperature conditions of various portions of the bearing 02 and the stator 01 inside the motor 00, so as to evaluate a health condition of the motor 00. The current sensor 102 is connected with a power supply of the motor 00 and is used for monitoring the current of the power supply in real time, judging the health condition of the motor 00 according to the current change in the running process of the motor 00,
in addition, in the present embodiment, the triaxial acceleration sensor 100, the current sensor 102 and the temperature sensor 101 are connected to the data acquisition module 110 through an I2C bus, the I2C bus has the advantages of simplicity and effectiveness, and the I2S bus avoids distortion induced by time difference by separating data and clock signals, thereby saving the cost of purchasing professional equipment for resisting audio jitter for users. The use of the I2C bus ensures reliable and efficient data transmission between the sensor 10 and the data acquisition unit 11.
Meanwhile, in this embodiment, the sensor 10 may be separately disposed on the motor 00, and may also be installed on the data collecting portion 11, and a part of the sensor may be disposed on the data collecting portion 11 and a part of the sensor may be disposed on the motor 00.
It should be noted that, the utility model discloses do not restrict data acquisition module, communication module, sensor and power module's concrete structure, can carry out reasonable selection according to actual need, as long as can ensure that each part matches each other, reliable and stable carries out work can.
Specifically, in the present embodiment, the data acquisition module 110 is an STM32L476 low power chip processor. The STM32L476 low-power chip processor has the advantages of low power consumption, low cost and stable performance, can be widely applied to various motors 00, and can accurately and efficiently process data acquired by the sensor 10. In other embodiments, the data acquisition module can also be other types, the utility model discloses do not limit this, as long as can accurate efficient handle the data that the sensor gathered.
Specifically, in the present embodiment, the communication module 111 includes a wireless transmission module 112, and the wireless transmission module 112 may be at least one of a Lora communication module, an NB-iot communication module, and a 4G communication module. That is, the data acquisition module 110 acquires information of the sensor 10, and can transmit the information to the processing center 12 through the wireless transmission module 112. Specifically, the wireless transmission module 112 may be any one or a combination of a Lora communication module, an NB-iot communication module, and a 4G communication module.
Preferably, in this embodiment, the wireless transmission module 112 is an NB-iot communication module, the NB-iot communication module has the advantages of wide coverage, capability of supporting massive connections, and lower power consumption, and can provide improved indoor coverage, under the same frequency band, NB-iot has a gain of 20dB compared with the existing network, the coverage area is enlarged by 100 times, one sector of the NB-iot communication module can support 10 ten thousand connections, support low latency sensitivity, ultra-low device cost, low device power consumption, and an optimized network architecture, and meanwhile, the standby time of the NB-iot communication module can be as long as 10 years, and has lower module cost.
In addition, in order to enhance the transmission capability of the wireless transmitting module 112, referring to fig. 2, in this embodiment, the communication module 111 further includes an antenna 113, and the antenna 113 can enhance the communication capability of the wireless transmitting module 112, so as to ensure that the data of the data collecting module 110 can be reliably and accurately transmitted.
Specifically, in this embodiment, the data acquisition module 110 and the communication module 111 are connected through an RS485 interface. The RS485 interface has the characteristics of good electrical characteristics, high transmission rate, long transmission distance and strong anti-interference capability, and can accurately and reliably transmit information between the data acquisition module 110 and the communication module 111.
In other embodiments, communication module can also be other structures, also can be connected through other forms with data acquisition module, is bluetooth module like communication module, through forms such as bluetooth signal and treater connection, the utility model discloses do not limit to this, can select and set up according to actual need.
Further, referring to fig. 2, in the present embodiment, the power supply module 14 includes a power supply management module 140, a charging socket 142 and a battery 141. That is to say, the power module 14 is composed of three parts, namely, a power management module 140, a charging socket 142 and a battery 141, wherein the charging socket 142 is used for supplying power to the device 1 from an external power source, the battery 141 is an internal power supply component, both the charging socket 142 and the battery 141 are connected with the power management module 140, and after the electric quantity is converted into a proper voltage or current by the power management module 140, the power is supplied to the components such as the data acquisition module 110, so that stable and reliable operation of each component can be ensured.
It should be noted that the utility model discloses do not restrict the concrete structure of charging socket and battery, as long as can be reliable and stable to each part power supply can. Specifically, in the present embodiment, the charging socket 142 is a USB charging socket, and the battery 141 is a lithium battery. In other embodiments, charging socket can also be other types, and the battery also can be other models, the utility model discloses do not do the restriction to this, as long as can be reliable and stable to each part power supply can.
Referring to fig. 1 in combination with fig. 2, in the present embodiment, the processing center 12 includes a database 120, the database 120 is connected to the data acquisition unit 11, and each performance parameter of the motor 00 is stored in the database 120. The database 120 is connected with the data acquisition part 11 through the industrial internet of things.
That is, the database 120 stores a large number of parameters of the conventional motor 00, such as conventional vibration parameters, current parameters, temperature parameters, etc., which may be different for the motor 00 applied in different occasions, but can provide reliable basis for data processing and pre-judging the performance of the motor 00.
It should be noted that the utility model discloses do not restrict the type of database, can carry out reasonable selection according to actual need. Specifically, the database 120 may be a cloud database, a hardware database, an independent database, or a leased shared database, as long as data storage and transmission can be stably, accurately, and reliably performed.
Further, referring to fig. 1, in the present embodiment, the processing center 12 further includes an intelligent terminal 13, and the intelligent terminal 13 can obtain the information of the database 120 and compare the information collected by the data collection part 11 with the data stored in the database 120 in real time.
That is, the data acquisition part 11 transmits each performance parameter of the motor 00 acquired in real time to the intelligent terminal 13 through the communication module 111, the intelligent terminal 13 can compare the performance parameter acquired in real time with the data in the database 120, and by comparing and analyzing the performance parameter acquired in real time with the data in the database 120, the use state of the motor 00 can be judged, and meanwhile, each performance parameter of the motor 00 can be judged in advance, so that a worker can be timely provided to overhaul and maintain the motor 00, the occurrence of motor faults is avoided, the stable and reliable operation of the motor 00 is ensured, and the intelligent maintenance of the motor is realized.
In this embodiment, intelligent terminal 13 can be the smart mobile phone, also can be the computer, can also be forms such as industrial computer, the utility model discloses do not injecing this, the staff can select suitable one or several kinds of intelligent terminal according to the application scenario, as long as can be accurate reliable monitor the motor can.
Further, referring to fig. 1, in the present embodiment, a primary alarm, a secondary alarm and a tertiary alarm are provided in the processing center 12, the primary alarm is in response to the abnormal signal condition of any one type of sensor, the secondary alarm is in response to the abnormal signal condition of any two types of sensors, and the tertiary alarm is in response to the abnormal signal condition of all types of sensors.
That is to say, the alarm 121 can perform alarm of different levels according to the abnormal signal of the sensor, specifically, in the three types of sensors of the embodiment, as long as one type of sensor generates the abnormal signal, the alarm 121 performs primary alarm to remind the worker to perform parameter adjustment and inspection; when two types of sensors have abnormal signals, the alarm 121 gives a secondary alarm to remind workers to stop the motor from running, and the detailed and comprehensive parameter adjustment and inspection are carried out on the motor; when all the three types of sensors have abnormal signals, the alarm 121 gives a third-level alarm to remind a worker to immediately shut down the motor, and a professional engineer needs to be requested to comprehensively maintain and overhaul the motor. Through setting up tertiary warning, can carry out different processing to different fault classes, more have specialty and pertinence, promote the fortune dimension efficiency of motor.
Generally speaking, the utility model discloses a sensor realizes the real-time collection to motor each item parameter, and data transmission after will gathering gives data acquisition portion, data conversion and processing are carried out through data acquisition portion, make data can be timely and reliable carry out long-range transmission, and simultaneously, processing center's database and intelligent terminal make up and use, can high efficiency, accurate reliable monitoring and prejudgement to the running state of motor, timely overhaul and maintain the motor, be convenient for carry out periodic and normalized management to the motor, and low cost, the dependable performance, and the facilitate promotion is with the popularization.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. An intelligent operation and maintenance system for a motor, comprising:
the sensor is arranged in the motor and used for acquiring monitored information in the motor;
the data acquisition part is connected with the sensor and is used for receiving and transmitting the information acquired by the sensor;
a processing center connected with the data acquisition part and used for receiving and processing the information sent by the data acquisition part, wherein,
the data acquisition part comprises a power module, a data acquisition module and a communication module, wherein the data acquisition module is respectively connected with the communication module, the sensor and the power module.
2. The intelligent operation and maintenance system of the motor according to claim 1, wherein the sensor comprises an acceleration sensor, a current sensor and a temperature sensor, the acceleration sensor is disposed on the motor and used for collecting vibration signals of the motor, the current sensor is connected to a power supply of the motor and used for monitoring the current of the power supply in real time, the health condition of the motor is judged according to the current change in the operation process of the motor, and the temperature sensor is disposed in the motor and used for collecting real-time temperature data of a bearing and a stator in the motor and obtaining the temperature conditions of the bearing and the stator of the motor in operation, so as to evaluate the health condition of the motor.
3. The motor intelligent operation and maintenance system according to claim 2, wherein a primary alarm, a secondary alarm and a tertiary alarm are arranged in the processing center, the primary alarm is used for responding to the condition that signals of any one type of the sensors are abnormal, the secondary alarm is used for responding to the condition that signals of any two types of the sensors are abnormal, and the tertiary alarm is used for responding to the condition that signals of all types of the sensors are abnormal.
4. The motor intelligent operation and maintenance system of claim 1, wherein the communication module comprises a wireless transmission module, and the wireless transmission module can be at least one of a Lora communication module, an NB-iot communication module and a 4G communication module.
5. The motor intelligent operation and maintenance system of claim 4, wherein the communication module further comprises an antenna for enhancing the communication capability of the wireless transmission module.
6. The motor intelligent operation and maintenance system of claim 1, wherein the power module comprises a power management module, a charging socket, and a battery.
7. The intelligent operation and maintenance system for the motor according to claim 6, wherein the charging socket is a USB charging socket, and the battery is a lithium battery.
8. The motor intelligent operation and maintenance system according to claim 1, wherein the processing center comprises a database, the database is connected with the data acquisition part, and each performance parameter of the motor is stored in the database.
9. The motor intelligent operation and maintenance system of claim 8, wherein the database is connected with the data acquisition part through an industrial internet of things.
10. The motor intelligent operation and maintenance system according to claim 8, wherein the processing center further comprises an intelligent terminal, and the intelligent terminal can acquire the information of the database and compare the information acquired by the data acquisition part with the information stored in the database in real time.
CN202021355815.9U 2020-07-12 2020-07-12 Motor intelligence fortune dimension system Expired - Fee Related CN212323930U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021355815.9U CN212323930U (en) 2020-07-12 2020-07-12 Motor intelligence fortune dimension system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021355815.9U CN212323930U (en) 2020-07-12 2020-07-12 Motor intelligence fortune dimension system

Publications (1)

Publication Number Publication Date
CN212323930U true CN212323930U (en) 2021-01-08

Family

ID=74028835

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021355815.9U Expired - Fee Related CN212323930U (en) 2020-07-12 2020-07-12 Motor intelligence fortune dimension system

Country Status (1)

Country Link
CN (1) CN212323930U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112953353A (en) * 2021-01-26 2021-06-11 山东师范大学 Motor control system and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112953353A (en) * 2021-01-26 2021-06-11 山东师范大学 Motor control system and control method thereof

Similar Documents

Publication Publication Date Title
CN107345857A (en) A kind of electro spindle condition monitoring and failure diagnosis system and its monitoring, diagnosing method
CN202710100U (en) Wind generating set remote on-line health state monitoring and fault diagnosing system
CN102200186A (en) Remote on-line state monitoring and fault diagnosis system of gear box of wind generating set
CN102901908B (en) Cable operation information monitoring system and implement method thereof
CN212323930U (en) Motor intelligence fortune dimension system
CN207096357U (en) A kind of high-tension cable operating state monitoring system
CN205879533U (en) Motor bearing on -line monitoring and intelligent early warning system
CN111324073A (en) Machine tool detection and analysis method and analysis platform thereof
CN107064743A (en) Power distribution network transient state ripple failure tracking method and device based on cloud analysis with identification
CN201600439U (en) Generator state monitoring system based on virtual instrument and wireless sensor network
CN202372630U (en) Wireless sensor network monitoring device for states of photovoltaic power station storage batteries
CN104310138A (en) Elevator vibration signal detection system based on GPRS (general packet radio service)
CN111835148A (en) Motor intelligence fortune dimension system
CN102497025B (en) Remote state monitoring method for automatic sectionalizer
CN202814597U (en) High-voltage power transmission line temperature measuring system
CN112904147A (en) Power transmission line fault and pre-discharge monitoring device and signal processing method
CN210577947U (en) Rapid positioning device for faults of looped network unit
CN202734864U (en) Monitoring system for wind-generating set
CN212933285U (en) Low-voltage motor intelligent monitoring device
CN202383267U (en) Storage battery state wireless network sensor node for DC (direct current) screen of transformer station
CN111162733A (en) Fault detection system of photovoltaic module
CN208818331U (en) A kind of transformer online monitoring device based on vibration
CN208572446U (en) Cable shaft operating status on-Line Monitor Device based on Internet of Things
CN102478616A (en) Intelligent overhead line failure alarm with self-adaptive function
CN202383266U (en) Wireless sensor network monitoring device of transformer substation DC (Direct Current) screen

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210108

Termination date: 20210712