CN117629435A - A temperature measurement system for substation electrical equipment based on radio frequency identification sensing - Google Patents
A temperature measurement system for substation electrical equipment based on radio frequency identification sensing Download PDFInfo
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- CN117629435A CN117629435A CN202311613603.4A CN202311613603A CN117629435A CN 117629435 A CN117629435 A CN 117629435A CN 202311613603 A CN202311613603 A CN 202311613603A CN 117629435 A CN117629435 A CN 117629435A
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/0772—Physical layout of the record carrier
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10297—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
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- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Security & Cryptography (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention discloses a transformer substation electrical equipment temperature measurement system based on radio frequency identification sensing, which comprises a UHF-RFID electronic tag, a reader-writer and a background management analysis system, wherein a temperature sensing module and an A/D converter are arranged in the UHF-RFID electronic tag, the A/D converter converts a signal value of the temperature sensing module into a digital signal, the reader-writer internally realizes the discovery and filtration of the UHF-RFID electronic tag, and the reader-writer demodulates and decodes the received signal and then sends the signal to a background main system for processing. The invention can realize non-contact passive accurate detection of key equipment and positions of the transformer substation.
Description
Technical Field
The invention relates to a transformer substation electrical equipment temperature measurement system based on radio frequency identification sensing, which is used in the field of transformer substation temperature monitoring.
Background
With the development of economy, the variety and number of basic equipment of the power system are gradually increased, and the requirements on the reliability of the equipment are also higher. Abnormal operation or faults of the electric equipment are usually represented as abnormal changes of temperature, so that the temperature monitoring of the electric equipment is the most effective and economic mode for safety monitoring of the electric equipment, and has great significance for the safe operation of the electric equipment. The power system is inspected by timely equipment, so that the normal operation of the power transmission and transformation system is directly influenced, and the normal operation of the power distribution and utilization system, or even the whole power system, is influenced. In the conventional temperature measurement technology at the present stage, the contact temperature measurement is mainly a thermocouple technology, and although the technology can accurately measure the temperature, the electrified detection cannot be realized due to the wired connection of the sensors. The infrared temperature measurement technology commonly used for non-contact temperature measurement is greatly influenced by field test conditions, and a single infrared temperature measurement technology is high in price. The active wireless temperature sensor can partially meet the temperature measurement requirement of a transformer substation, but the sensor of the type is large in general size and weight, and can be difficult to maintain for a long time due to the fact that battery power supply is needed, and in addition, the risk of liquid leakage and explosion can be brought by the application of the battery, so that popularization is not facilitated.
In recent years, RFID tag technology has been developed for a long time because of its advantages such as non-contact automatic identification, environmental protection, and wide application range. The RFID tag can carry out timely equipment inspection on the power system, and directly affects the normal operation of the power transmission and transformation system, the normal operation of the power distribution and power utilization system and even the whole power system. Each large operation power supply company has a plurality of substations, the number of monitoring points of primary equipment of each substation is hundreds to thousands, and the manual inspection amount and the recorded data amount are huge. The inspection of primary equipment monitoring points of a transformer substation is mainly to collect temperature data of key points of the equipment, state information such as the temperature of the transformer substation with identification information is collected through analysis, early warning is achieved, normal, abnormal and serious state judgment of the equipment is achieved according to related inspection rules, and inspection period and inspection strategy suggestions are provided. At present, a related product of a temperature measurement system of electrical equipment of a transformer substation based on radio frequency identification sensing does not exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a transformer substation electrical equipment temperature measurement system based on radio frequency identification sensing, which can realize non-contact passive accurate detection of key equipment and positions of a transformer substation.
The technical scheme for achieving the purpose is as follows: a transformer substation electrical equipment temperature measurement system based on radio frequency identification sensing comprises a UHF-RFID electronic tag, a reader-writer and a background management analysis system;
the UHF-RFID electronic tag is internally provided with a temperature sensing module and an A/D converter, the A/D converter converts the signal value of the temperature sensing module into a digital signal, the radio frequency module in the reader-writer realizes the discovery and filtration of the UHF-RFID electronic tag, and the reader-writer demodulates and decodes the received signal and then sends the signal to a background main system for processing.
Furthermore, the chip packaging overall frame of the UHF-RFID electronic tag is formed into a closed cavity by the HTCC ceramic shell and the metal cover plate.
Further, the UHF-RFID electronic tag has two input ends distributed on the chip, one end of the lead wire is bonded to the input end of the chip, the other end is bonded to the antenna feed end, and the two lead wires are distributed in the same plane.
Further, the UHF-RFID electronic tag chip is placed in the nitrogen environment of the closed cavity.
Furthermore, the PAD salient points of the UHF-RFID electronic tag chip are communicated with an external ceramic antenna through gold balls and ceramic shell metal through holes.
Furthermore, ACA conductive adhesive is arranged between the antenna feed point and the PAD salient point of the radio frequency identification chip.
Furthermore, the UHF-RFID electronic tag chip adopts a dual-band working mode, which is respectively an energy acquisition frequency band and a chip communication frequency band.
Furthermore, the reader-writer preferentially transmits the energy acquisition frequency band electromagnetic wave to discover and filter the UHF-RFID electronic tag, and transmits the chip communication frequency band electromagnetic wave to the UHF-RFID electronic tag after the UHF-RFID electronic tag is discovered, so that a temperature reading command is sent.
Further, the energy acquisition frequency band electromagnetic wave is 2.45GHz electromagnetic wave, and the chip communication frequency band electromagnetic wave is 915MHz electromagnetic wave.
Furthermore, the background management analysis system receives and applies big data in the transformer substation, including equipment type, real-time load, field temperature, field humidity, weather, wind speed, illumination and measuring point material data, builds a big data analysis and judgment model, and realizes diagnosis and early warning of abnormal heating of the electrical equipment caused by faults through data training.
The invention meets the actual field operation requirement of an electric company, can greatly improve the temperature measurement monitoring efficiency of electric equipment, can save a great deal of manpower and material resources compared with the current mainstream optical fiber temperature measurement mode, effectively improves the working efficiency and the maintenance quality, reduces the maintenance cost, has good social benefit and economic benefit, and has the following positive effects:
the temperature measuring system of the electrical equipment of the transformer substation uses a non-contact automatic identification technology to avoid faults caused by contact; the reading distance is far (the furthest can reach more than 5 m); the power supply is not needed, maintenance and maintenance are not needed, the service life can be as long as 10 years, and the price is low; can realize complete sealing, thus having good waterproof, dustproof, antifouling, electromagnetic interference preventing performances and the like.
Drawings
Fig. 1 is a schematic diagram of UHF-RFID electronic tag packaging of a temperature measurement system of electrical equipment of a transformer substation based on radio frequency identification sensing;
fig. 2 is a general frame diagram of an implanted radio frequency identification chip of the temperature measurement system of electrical equipment of a transformer substation based on radio frequency identification sensing.
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is given by way of specific examples:
please refer to fig. 1 and 2. The invention discloses a transformer substation electrical equipment temperature measurement system based on radio frequency identification sensing, which comprises a UHF-RFID electronic tag, a reader-writer and a background management analysis system.
The UHF-RFID electronic tag is internally provided with a temperature sensing module and an A/D converter, the A/D converter converts the signal value of the temperature sensing module into a digital signal, the radio frequency module in the reader-writer is designed according to the ISO18000-6C standard, the UHF-RFID electronic tag is found and filtered, and the reader-writer demodulates and decodes the received signal and then sends the signal to a background main system for processing. The equipment main control module can realize operations such as multiple identity authentication on the passive chip tag based on SM7 algorithm recommended by the national password administration, so as to ensure safety, stability and high efficiency of the communication process. The outside of the equipment adopts various communication interfaces, and can realize a communication mode based on PCSC communication so as to be used by a cross-platform multi-system. The temperature sensing module, the tag chip, the antenna and the supporting capacitor are packaged to form a novel miniaturized and metal-resistant electronic tag (passive wireless temperature sensor). The UHF-RFID temperature measuring chip adopts a dual-band working mode, namely, the chip energy acquisition and the chip communication are respectively carried out by adopting 2 frequency bands, so that the problem of insufficient single-band energy supply is solved, and the communication distance is increased. The UHF-RFID electronic tag and the reader-writer realize the spatial (non-contact) coupling of radio frequency signals through the coupling element, and realize the energy transfer and the data exchange in the coupling channel according to the time sequence relationship.
The tag chip wire bonding is mainly used for hard substrate antenna tags, such as PCB and ceramic-based ultrahigh frequency tags. The tag chip is relatively distributed with two input ends, one end of the lead wire is bonded to the input end of the chip, the other end is bonded to the feed end of the antenna, and the two lead wires are approximately in a plane. A single bonding wire with the diameter of 1mi generates parasitic inductance of about 0.3nH in the frequency band of 1GHz, the parasitic resistance is almost zero and can be ignored, and the influence of the length of the bonding wire is small. In the 900MHz band where the UHF tag operates, the calculated impedance is about 1Ω, with little effect relative to the matching impedance of about 200Ω. Therefore, the influence of wire bonding on impedance matching of the tag chip and the antenna is small, the tag performance is hardly affected, and the overall frame of the chip package is formed into a closed cavity by the HTCC ceramic shell and the metal cover plate. The radio frequency identification chip is placed in the nitrogen environment of the closed cavity, the PAD salient points of the chip are communicated with the external ceramic antenna through the metal through holes of the metal ball and the ceramic shell, and the metal cover plate and the metal layer of the ceramic inner wall form a metal shielding metal cavity which plays a role in blocking an electric field and a magnetic field, so that the intensity of an electromagnetic field generated by the external environment in the vertical direction relative to the radio frequency identification chip is cut off. And simultaneously, electromagnetic signals excited by the radio frequency identification chip can be received and transmitted through the ceramic antenna. The structure ensures normal operation of the high-temperature environment and has the advantage of strong electromagnetic interference resistance.
The ACA conductive adhesive is a mixed jelly of conductive metal particles and polymers, and is solidified under the action of pressure and heat, so that the connection between the antenna 4 and the radio frequency identification chip is realized. The bonding of the ACA conductive adhesive 1 is shown in figure 1, the electrical connection is realized by physical contact between metal particles and antenna feed points and radio frequency identification chip bumps 2, metallurgical bonding is not formed among the conductive particles, between the conductive particles and the antenna feed points and between the conductive particles and the chip bumps, and the periphery of the conductive path 3 is filled with polymer dielectrics. Thus, the junction forms a capacitance model, such that parasitic capacitance exists.
The overall frame of the radio frequency identification chip package is formed by an HTCC ceramic shell 5 and a metal cover plate 6 into a closed cavity, as shown in fig. 2. The radio frequency identification chip 7 is arranged in the nitrogen environment of the closed cavity, and the PAD salient points of the chip are communicated with the external antenna 4 through the metal through holes of the metal ball and the ceramic shell, and the metal cover plate and the metal layer of the ceramic inner wall form a metal shielding metal cavity which plays a role in blocking an electric field and a magnetic field, so that the intensity of an electromagnetic field generated relative to the external environment in the vertical direction of the radio frequency identification chip is cut off. And simultaneously, electromagnetic signals excited by the radio frequency identification chip can be received and transmitted through the ceramic antenna. The structure ensures normal operation of the high-temperature environment and has the advantage of strong electromagnetic interference resistance.
The UHF-RFID chip accords with international standards ISO18000-6C and EPC Class Gen2, adopts a dual-band working mode (915 MHz and 2.45 GHz), namely, the chip energy acquisition and the chip communication are respectively carried out by adopting 2 frequency bands, thereby solving the problem of insufficient single-band energy supply and improving the communication distance. Energy harvesting is a critical component in passive sensors that converts magnetic or electromagnetic energy induced on an antenna into internally applicable electrical energy, as well as an ac to dc conversion. The conversion efficiency directly influences the working distance of the tag chip and the accuracy of communication. The UHF-RFID electronic tag is driven by electromagnetic field energy from a fixed reader command signal, which greatly reduces the cost of the tag, but the reader command signal is an instantaneous signal, and the provided energy is limited, so that the reading distance is limited. By combining the power temperature inspection work, the UHF-RFID electronic tag energy acquisition mode is improved, the passive temperature sensor chip adopts a dual-band work mode, namely, the chip energy acquisition and the chip communication are respectively carried out by adopting two frequency bands of 2.45GHz and 915 MHz. When a patrol personnel arrives at the transformer substation site, the reader continuously radiates 2.45GHz electromagnetic waves to the area with the radius of about 30m, the UHF-RFID tag analog front end continuously collects and stores the energy in a longer period of time, the energy is far greater than the instantaneous energy provided by a command signal of the reader in a traditional mode, and when the fixed reader transmits a temperature reading command through 915MHz, the temperature data returns through a 915MHz frequency channel. Therefore, the problem of insufficient single-band energy supply is solved by the working mode, and the communication distance is increased.
The physical architecture of the temperature monitoring and analyzing system comprises arrangement of energy supply modules, formulation of a communication protocol, a data analyzing module and the like. By means of the internet of things technology, state information such as multi-equipment monitoring and inspection of the transformer substation with identification information is collected, and the system has the functions of state early warning, state evaluation, overhaul suggestion and the like. The temperature measuring system mainly comprises a passive temperature measuring chip, a communication antenna, a data server, terminal data processing and the like.
The monitoring system adopts layered design to form a service development and operation support environment of a substation electrical equipment key point temperature test technology based on a unified technical architecture, provides basic service and universal service functions for various service systems, and realizes information resource sharing and service coordination.
The temperature collector is used for collecting temperature data of the sensor and uploading the data to the host. The temperature collector is composed of a DSP processor, a radio frequency transmitter module, a receiver module, a receiving/transmitting switching and antenna selecting switch module, an RS485 interface module and a power supply module. The DSP works in a time division multiple access and time division multiple access mode and collects all the sensors in turn.
The monitoring system adopts a background C/S architecture design, can realize the functions of measuring the current temperature value of the electrical equipment, judging whether to alarm, recording and analyzing the collected historical temperature value, and setting the upper limit and the lower limit of the temperature alarm of each equipment key point. The method can analyze and sort the requirements of the transformer substation staff, and extract the temperature monitoring system according to the principles of rapidness, accuracy, convenience and good operation and identification.
In order to realize the reading of the substation total station temperature sensor and reduce the deployment of the read-write terminal as much as possible, the read-write terminal of the system adopts a high-gain omni-directional antenna scheme, the antenna adopts circular polarization design, and as many passive temperature sensors near the cover terminal as possible, and the omni-directional read-write terminal mainly comprises a main control module, an RF transceiver module, a display module, a real-time clock module, an expansion memory module, a USB interface module, a serial communication interface module, an Ethernet interface module, a power supply system and the like. The patrol personnel completes the acquisition and display of the temperature information of the radio frequency tag in a certain area, stores corresponding data in a memory of the reader-writer, and transmits the corresponding data to a background server through a serial communication interface after being connected with a computer.
By analyzing the heating principle, the heating positions and the corresponding possible faults of each equipment of the transformer substation, the reasonable sensor deployment principle of each equipment of the transformer substation is summarized, the optimal monitoring effect is obtained on the premise of effectively reducing the consumption of the sensors, and the deployment points select key positions of the transformer substation. And after the sensor and the read-write terminal are installed, temperature monitoring can be carried out. The method specifically comprises the steps that in the safety distance of a test site, a fixed read-write terminal is close to a temperature sensor, the distance and the direction between the terminal and the sensor are adjusted until stable temperature and ID data are displayed, and the temperature of each device of the transformer substation is obtained in real time in an electrified mode.
The basic working flow of the passive temperature test system provided by the invention is as follows:
the read-write terminal sends a radio frequency signal with a certain frequency through the transmitting antenna, when the radio frequency card enters the working area of the transmitting antenna, an induction current is generated, and the radio frequency card obtains energy to be activated; the radio frequency card sends out information such as self-coding and the like through a built-in transmitting antenna of the card; the system receiving antenna receives a carrier signal sent from the radio frequency card, the carrier signal is transmitted to the read-write terminal through the antenna regulator, and the read-write terminal demodulates and decodes the received signal and then transmits the signal to the background main system for relevant processing; the background main system judges the legitimacy of the card according to logic operation, performs corresponding processing and control for different settings, and sends out instruction signals to control the action of the executing mechanism. The background management analysis system receives and applies big data in the transformer substation, including equipment type, real-time load, field temperature, field humidity, weather, wind speed, illumination and measuring point material data, builds a big data analysis and judgment model, and realizes diagnosis and early warning of abnormal heating of the electrical equipment caused by faults through data training.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.
Claims (10)
1. The utility model provides a transformer substation electrical equipment temperature measurement system based on radio frequency identification sensing, includes UHF-RFID electronic tags, reader-writer and backstage management analysis system, its characterized in that:
the UHF-RFID electronic tag is internally provided with a temperature sensing module and an A/D converter, the A/D converter converts the signal value of the temperature sensing module into a digital signal, the radio frequency module in the reader-writer realizes the discovery and filtration of the UHF-RFID electronic tag, and the reader-writer demodulates and decodes the received signal and then sends the signal to a background main system for processing.
2. The substation electrical equipment temperature measurement system based on radio frequency identification sensing according to claim 1, wherein the UHF-RFID electronic tag chip packaging overall frame is a closed cavity formed by the HTCC ceramic shell and the metal cover plate.
3. The substation electrical equipment temperature measurement system based on radio frequency identification sensing according to claim 2, wherein the chip of the UHF-RFID electronic tag is provided with two input ends, one end of the lead wire is bonded to the input end of the chip, the other end of the lead wire is bonded to the antenna feed end, and the two lead wires are distributed in the same plane.
4. The substation electrical equipment temperature measurement system based on radio frequency identification sensing according to claim 2, wherein the UHF-RFID electronic tag chip is placed in the nitrogen environment of the closed cavity.
5. The substation electrical equipment temperature measurement system based on radio frequency identification sensing according to claim 4, wherein the chip PAD salient point of the UHF-RFID electronic tag is communicated with an external ceramic antenna through a gold ball and a ceramic shell metal through hole.
6. The temperature measurement system of electrical equipment of a transformer substation based on radio frequency identification sensing according to claim 5, wherein ACA conductive adhesive is arranged between the antenna feeding point and the PAD bump of the radio frequency identification chip.
7. The substation electrical equipment temperature measurement system based on radio frequency identification sensing according to claim 1, wherein a chip of the UHF-RFID electronic tag adopts a dual-band working mode, and is respectively an energy acquisition frequency band and a chip communication frequency band.
8. The system for measuring the temperature of electrical equipment of a transformer substation based on radio frequency identification sensing according to claim 7, wherein the reader/writer preferentially transmits electromagnetic waves in an energy acquisition frequency band to discover and filter the UHF-RFID electronic tag, and transmits electromagnetic waves in a chip communication frequency band to the UHF-RFID electronic tag after the UHF-RFID electronic tag is discovered, so that a temperature reading command is sent.
9. The system for measuring the temperature of electrical equipment of a transformer substation based on radio frequency identification sensing according to claim 8, wherein the electromagnetic wave in the energy acquisition frequency band is 2.45GHz electromagnetic wave, and the electromagnetic wave in the chip communication frequency band is 915MHz electromagnetic wave.
10. The substation electrical equipment temperature measurement system based on radio frequency identification sensing according to claim 1, wherein the background management analysis system receives and applies substation internal big data including equipment type, real-time load, field temperature, field humidity, weather, wind speed, illumination and measuring point material data, builds a big data analysis and judgment model, and realizes diagnosis and early warning of abnormal heating of electrical equipment caused by faults through data training.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120542448A (en) * | 2025-05-21 | 2025-08-26 | 长江大学 | A low-power UHF RFID sensing system based on radio frequency switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509908A (en) * | 2015-11-26 | 2016-04-20 | 云南电网有限责任公司昭通供电局 | Passive temperature test system for key point of primary equipment in substation |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509908A (en) * | 2015-11-26 | 2016-04-20 | 云南电网有限责任公司昭通供电局 | Passive temperature test system for key point of primary equipment in substation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120542448A (en) * | 2025-05-21 | 2025-08-26 | 长江大学 | A low-power UHF RFID sensing system based on radio frequency switch |
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