All-operation-condition electrical testing method based on RFID, apparatus, and system

Abstract

An all-operation-condition electrical testing method based on RFID, an apparatus, and a system. The method comprises: in response to a wireless radio frequency signal sent by a reader-writer antenna, generating a coupling current between each electronic tag and a tag antenna corresponding thereto, such that each electronic tag is energized and activated, each electronic tag corresponding to one tag antenna (step S101); once each electronic tag is energized and activated, reading voltage acquisition data of a voltage sensor corresponding to each electronic tag, each electronic tag being correspondingly connected to one voltage sensor, and each voltage sensor acquiring one phase voltage from a device to undergo electrical testing (step S102); by means of the tag antenna, sending the voltage acquisition data read by each electronic tag, such that the reader-writer antenna receives the sent voltage acquisition data, and decodes the voltage acquisition data (step S103); and separately performing electrical testing determination on the decoded voltage acquisition data, thereby obtaining an electrification result of the device to undergo electrical testing (step S104).

Description

A full-condition electrical testing method, device and system based on RFID Technical Field

[0001] The present invention relates to the field of power electronics technology, and in particular to an RFID-based full-operating-condition electrical testing method, device, and system. Background Art

[0002] During electrical equipment testing, to avoid potential harm from step voltage or contact voltage caused by close physical contact, the use of out-of-area, non-contact testing is a crucial measure and technical means to prevent electric shock and ensure personal safety. Currently, in the power industry, wireless passive testing devices based on RFID technology enable out-of-area, non-contact testing.

[0003] Existing wireless passive electrical testing devices based on RFID technology use a single "source-sensing integrated probe" attached to (or touching) a conductor. This probe collects voltage signals via an electric field sensor, and, combined with the passive signal transmission characteristics of RFID tags, implements an out-of-area electrical testing mode that passively collects and wirelessly transmits signals from the conductor. Because the power system voltage is a 50Hz sinusoidal voltage, each phase voltage crosses zero twice (in amplitude) within each cycle. Currently used wireless passive electrical testing devices based on RFID technology use a single sensor attached to (or touching) a specific phase conductor to collect the instantaneous voltage of that phase. However, the voltage collection time is random, making it inevitable that the voltage will cross zero or near zero. This can cause the collected voltage to fall below the "power threshold" of the electric field sensor, resulting in an erroneous result of "powering on" being misinterpreted as off. This results in low electrical testing accuracy and large errors in electrical equipment testing. Summary of the Invention

[0004] The present invention provides an RFID-based full-operating-condition electrical testing method, device, and system to solve the technical problems in the prior art of low electrical testing accuracy and large electrical testing errors of electrical equipment.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an RFID-based full-operating-condition electrical testing method, comprising:

[0006] In response to the radio frequency signal sent by the reader antenna, a coupling current is generated between each electronic tag and its corresponding tag antenna, so that each electronic tag is powered on and activated; wherein each electronic tag corresponds to one tag antenna;

[0007] After each of the electronic tags is powered on and activated, the voltage data collected by the voltage sensor corresponding to each of the electronic tags is read; wherein each electronic tag is connected to a corresponding voltage sensor, and each voltage sensor collects a phase voltage in the device to be tested;

[0008] The voltage acquisition data read by each electronic tag is transmitted through the tag antenna, so that the reader antenna receives the transmitted voltage acquisition data and decodes the voltage acquisition data;

[0009] The decoded voltage acquisition data is tested and judged respectively, thereby obtaining the energized results of the equipment to be tested.

[0010] As a preferred solution, in response to the radio frequency signal sent by the reader antenna, a coupling current is generated between each electronic tag and its corresponding tag antenna, so that each electronic tag is powered on and activated, specifically:

[0011] In response to a user clicking on a device to be tested displayed in the electroscope, the reader / writer antenna is controlled to generate a wireless radio frequency signal corresponding to a tag antenna in the device to be tested; wherein the reader / writer antenna is disposed in the electroscope, and the device to be tested is provided with a tag antenna, an electronic tag connected to the tag antenna, and a voltage sensor connected to the electronic tag;

[0012] After each tag antenna receives the wireless radio frequency signal, a coupling current is generated between each tag antenna and the corresponding electronic tag, so that each corresponding electronic tag is powered on and activated by the coupling current.

[0013] As a preferred solution, after each of the electronic tags is powered on and activated, the voltage data collected by the voltage sensor corresponding to each of the electronic tags is read, specifically:

[0014] After each of the electronic tags is powered on and activated, an electrical signal communication connection is established between the electronic tag and its corresponding voltage sensor;

[0015] After each electronic tag is successfully connected to its corresponding voltage sensor, the corresponding voltage collection data is obtained in real time through the voltage sensor within a preset time in the future, so that each electronic tag reads the voltage collection data collected by the corresponding voltage sensor within the preset time period.

[0016] As a preferred solution, the voltage acquisition data read by each electronic tag is sent through the tag antenna so that the reader antenna receives the sent voltage acquisition data and decodes the voltage acquisition data, specifically:

[0017] After each electronic tag reads and obtains the corresponding voltage collection data, the tag antenna connected to the electronic tag packages and encodes the corresponding voltage collection data and the tag IP information, and sends the packaged and encoded data so that the reader antenna receives the packaged and encoded data; wherein each tag IP information corresponds to a tag antenna, its electronic tag, and a voltage sensor;

[0018] After the reader antenna receives the packaged and encoded data, it decodes and organizes the data to obtain voltage data collected by the voltage sensor corresponding to each tag IP information within a preset time period.

[0019] As a preferred solution, the decoded voltage acquisition data is subjected to electrical testing and judgment respectively, thereby obtaining the charged result of the device to be tested, specifically:

[0020] According to the preset power judgment conditions, the voltage data collected by the voltage sensor corresponding to each decoded tag IP information within the preset time period are tested and judged respectively;

[0021] If there are at least two phase voltage amplitudes greater than or equal to the preset phase voltage peak value in the voltage data collected by each voltage sensor, a signal is generated indicating that the electrical device to be tested is energized;

[0022] Otherwise, a signal is generated indicating that the electrical device to be tested is not powered.

[0023] As a preferred solution, the method for constructing the preset charged judgment condition includes:

[0024] According to the rotational symmetry relationship of the three-phase voltage, the voltage amplitude of each phase of the three-phase voltage is calculated;

[0025] According to the voltage amplitude of each phase voltage, it is calculated that the voltage amplitudes of any two phase voltages in each cycle are not less than a fixed value at the same time;

[0026] The preset phase voltage peak value is calculated based on the fixed value and the preset energized threshold value of the electroscope.

[0027] Accordingly, the present invention also provides an RFID-based full-operation-condition electrical testing device, comprising: a response module, a reading module, a sending module, and a judgment module;

[0028] The response module is configured to generate a coupling current between each electronic tag and its corresponding tag antenna in response to the wireless radio frequency signal sent by the reader antenna, so as to activate each electronic tag; wherein each electronic tag corresponds to one tag antenna;

[0029] The reading module is used to read the voltage data collected by the voltage sensor corresponding to each electronic tag after each electronic tag is powered on and activated; wherein each electronic tag is connected to a corresponding voltage sensor, and each voltage sensor collects a phase voltage of the electrical device to be tested;

[0030] The sending module is used to send the voltage acquisition data read by each electronic tag through the tag antenna, so that the reader antenna receives the sent voltage acquisition data and decodes the voltage acquisition data;

[0031] The judgment module is used to perform electrical testing judgment on the decoded voltage collection data, thereby obtaining the charged result of the device to be tested.

[0032] Accordingly, the present invention further provides an RFID-based full-operation-condition electrical testing system for executing any one of the RFID-based full-operation-condition electrical testing methods described above, comprising: an electrical testing reader, a device to be tested, and a tester provided on the device to be tested;

[0033] The electroscope reader includes an MCU module and a reader / writer antenna connected to the MCU module. The electroscope includes a plurality of phase electrical connection devices, each of which includes an electronic tag and a tag antenna and a voltage sensor connected to the electronic tag.

[0034] The reader antenna is used to send wireless radio frequency signals and receive the sent voltage acquisition data;

[0035] The MCU is used to decode the voltage acquisition data; perform electrical testing on the decoded voltage acquisition data to obtain the charged result of the device to be tested;

[0036] The tag antenna is used to generate a coupling current between each electronic tag and its corresponding tag antenna in response to the wireless radio frequency signal sent by the reader antenna, so that each electronic tag is powered on and activated; and transmit the voltage data collected by each electronic tag;

[0037] The electronic tag is used to read the voltage data collected by the corresponding voltage sensor;

[0038] The voltage sensor is used to collect the phase voltage of the electrical equipment to be tested.

[0039] As a preferred solution, the electrical inspection reader further includes: a power module, a keyboard module, a display module, a communication module and a tag reader;

[0040] The tag reader is used to read and decode the voltage data collected on the electronic tag;

[0041] The keyboard module is used to input the setting of the operating parameters of the electrometer reader;

[0042] The display module is used to display the electrical test results;

[0043] The communication module is used to connect to the external Internet of Things, thereby sending the electrical test results to the external Internet of Things;

[0044] The power supply module is used to provide the working voltage of the electrical test reader.

[0045] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0046] The technical solution of the present invention uses a wireless radio frequency signal sent by a reader antenna, so that the electronic tag can be powered on and activated without physical contact. At the same time, the wireless method improves the convenience of operation, reduces the complexity of wiring, and reduces maintenance costs. In addition, the voltage sensor connected to each electronic tag can collect phase voltage data of the device to be tested in real time, and the real-time data collection helps to timely detect voltage anomalies of the device, thereby improving the safety of the power system. After the electronic tag is powered on and activated, it can automatically read the collected data of the connected voltage sensor and send it to the reader antenna through the tag antenna, reducing manual intervention and improving the efficiency and accuracy of data processing. After the voltage collection data is received by the reader antenna, it can be decoded and analyzed, and then the decoded data can be used for electrical testing judgment. The energized result of the device to be tested can be quickly and accurately obtained, which helps to take corresponding measures in a timely manner, so as to realize the safe, convenient, accurate and reliable voltage collection of the device to be tested under all working conditions, outside the area, and non-contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG1 is a flowchart of a method for full-operation-condition electrical testing based on RFID provided in an embodiment of the present invention;

[0048] Figure 2 shows the RFID electrical testing process according to an embodiment of the present invention;

[0049] Figure 3 is a three-phase power frequency voltage vector diagram provided by an embodiment of the present invention;

[0050] FIG4 is a structural diagram of an RFID-based full-operation-condition electrical testing device provided by an embodiment of the present invention;

[0051] FIG5 is a structural diagram of the RFID-based full-operating-condition electrical testing system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0053] Example 1

[0054] Referring to FIG. 1 , a full-condition electrical testing method based on RFID is provided in an embodiment of the present invention, including the following steps S101-S104:

[0055] Step S101: In response to a radio frequency signal sent by a reader antenna, a coupling current is generated between each electronic tag and its corresponding tag antenna, so that each electronic tag is powered on and activated; wherein each electronic tag corresponds to one tag antenna.

[0056] As a preferred solution of this embodiment, in response to the wireless radio frequency signal sent by the reader antenna, a coupling current is generated between each electronic tag and its corresponding tag antenna, so that each electronic tag is powered on and activated, specifically:

[0057] In response to a user clicking on the electrical device to be tested displayed in the electroscope, the reader / writer antenna is controlled to generate a wireless radio frequency signal corresponding to the tag antenna in the electrical device to be tested; wherein, the reader / writer antenna is arranged in the electroscope, and the electrical device to be tested is provided with a tag antenna, an electronic tag connected to the tag antenna, and a voltage sensor connected to the electronic tag; after each tag antenna receives the wireless radio frequency signal, a coupling current is generated between each tag antenna and the corresponding electronic tag, thereby energizing and activating each corresponding electronic tag through the coupling current.

[0058] In this embodiment, a non-contact method is used to detect whether the device under test is energized, avoiding the safety risks associated with direct physical contact. This method is particularly suitable for testing high-voltage devices and reduces the risk of electric shock to operators during the test. Furthermore, a user simply clicks on the device under test in the electroscope to quickly activate the electronic tag connected to the device. Data is then transmitted via wireless radio frequency signals. This automated process significantly improves the efficiency of the test and simplifies operation. Furthermore, each electronic tag is connected to a voltage sensor that accurately captures the phase voltage data of the device under test. This data is wirelessly transmitted to a reader antenna and decoded and analyzed to accurately determine the device's energized state. Furthermore, traditional electroscopes may have blind spots during testing. However, the present invention, through the combination of wireless radio frequency signals and electronic tags, enables more comprehensive detection of the device's energized state, reducing safety hazards caused by blind spots.

[0059] In this embodiment, the operating status of high-voltage lines can be monitored over a long period of time. This is not only suitable for one-time electrical testing, but can also continuously monitor the operation of power lines, ensuring the stable operation of the power system. Furthermore, considering the need for outdoor operation, related equipment, such as the electroscope, can be designed to be waterproof and powered by AC or DC power, eliminating the need for battery replacement and making it more suitable for outdoor use. This will also help promote the development of intelligent and automated power equipment, improving the safety and reliability of power systems through technological means. The use of wireless technology and electronic tags reduces the need for physical wiring, lowering system maintenance costs and facilitating system upgrades and expansions.

[0060] In this embodiment, the tag antenna is typically designed as a multi-turn inductive coil. These coils and the parallel capacitors form a resonant circuit, which enables the antenna to resonate at a specific frequency (such as 13.56MHz commonly used by NFC tags). At the same time, the impedance of the tag antenna needs to match the internal tuning capacitor value to ensure resonance at a specific frequency. When the reader antenna emits electromagnetic waves, the coil of the tag antenna can capture this changing electromagnetic field. Due to the change in the electromagnetic field, an induced current is generated in the tag antenna coil.

[0061] Furthermore, the coupling between the tag antenna and the reader antenna can be magnetic coupling, electric coupling or electromagnetic coupling. Magnetic coupling mainly occurs in the near field area, and energy and data are transferred through the interaction of magnetic fields. Electric coupling and electromagnetic coupling involve the role of electric fields. In the near-field sensing system, the magnetic field generated by the reader antenna interacts with the coil of the tag antenna, and energy is transferred through inductive coupling, thereby activating the connected electronic tag and exchanging data. Once the electronic tag is activated, wireless communication with the reader can be carried out through the tag antenna to achieve data transmission and reception. Preferably, the number of electronic tags set on the electrical device to be tested is 3, and each electronic tag is used to detect the voltage of a phase in the electrical device to be tested. Three electronic tags can be used to detect the three-phase voltage of the electrical device to be tested, thereby avoiding the problem of misjudgment caused by random voltage acquisition by a single voltage sensor probe.

[0062] Step S102: After each electronic tag is powered on and activated, read the voltage data collected by the voltage sensor corresponding to each electronic tag; wherein each electronic tag is connected to a corresponding voltage sensor, and each voltage sensor collects a phase voltage in the device to be tested.

[0063] As a preferred solution of this embodiment, after each of the electronic tags is powered on and activated, the voltage data collected by the voltage sensor corresponding to each of the electronic tags is read, specifically:

[0064] After each of the electronic tags is powered on and activated, an electrical signal communication connection is established between the electronic tag and its corresponding voltage sensor; after the connection between each electronic tag and its corresponding voltage sensor is successful, the corresponding voltage collection data is obtained in real time through the voltage sensor within a preset time in the future, so that each of the electronic tags reads the voltage collection data collected by the corresponding voltage sensor within a preset time period.

[0065] In this embodiment, the integrated voltage sensor enables real-time monitoring and recording of voltage data within a preset timeframe. This real-time data collection helps promptly detect voltage anomalies in equipment and improves power system security. Utilizing RFID technology, the electronic tag and reader communicate via wireless signals, enabling data reading and transmission without physical contact. This reduces the difficulty and cost of equipment maintenance while improving data transmission efficiency. Once activated, the electronic tag automatically reads data collected by the connected voltage sensor and stores or transmits it. This automated data acquisition and processing reduces manual intervention and improves the accuracy and efficiency of data processing.

[0066] This embodiment supports the intelligentization of sensors, making engineering safety monitoring more convenient. Because intelligent sensors possess self-testing, self-calibration, self-diagnosis, and network communication capabilities, they enable standardized information collection, processing, and transmission. Furthermore, electronic tags, which integrate a radio frequency transceiver unit and a sensor acquisition unit, can be more easily integrated into existing monitoring systems, improving system integration and reliability. The combination of hardware structures such as wireless radio frequency modules, antennas, microcontrollers (MCUs), and sensors, along with optimized software architecture, ensures the stability and reliability of the electronic tags.

[0067] Step S103: The voltage acquisition data read by each electronic tag is transmitted via the tag antenna, so that the reader antenna receives the transmitted voltage acquisition data and decodes the voltage acquisition data.

[0068] As a preferred solution of this embodiment, the voltage acquisition data read by each electronic tag is sent through the tag antenna, so that the reader antenna receives the sent voltage acquisition data and decodes the voltage acquisition data, specifically:

[0069] After each electronic tag reads and obtains the corresponding voltage collection data, the corresponding voltage collection data and the tag IP information are packaged and encoded through the tag antenna connected to the electronic tag, and the packaged and encoded data are sent so that the reader antenna receives the packaged and encoded data; wherein, each tag IP information corresponds to a tag antenna and its electronic tag and voltage sensor; after the reader antenna receives the packaged and encoded data, the data is decoded and sorted to obtain the voltage collection data collected by the voltage sensor corresponding to each tag IP information within a preset time period.

[0070] In this embodiment, by packaging the voltage acquisition data with the tag's IP information, data integrity and accuracy are ensured, facilitating rapid identification and analysis of each sensor's data during subsequent data processing. Furthermore, encoding the data ensures the security and reliability of data transmission. Encoding reduces the impact of external interference on the data and improves data transmission efficiency. After the reader antenna receives the data, decoding it allows for rapid acquisition of the original voltage acquisition data, facilitating subsequent analysis. Furthermore, each electronic tag has a unique IP address, which helps accurately locate and identify each sensor within complex power systems.

[0071] In this embodiment, through real-time monitoring and early warning, it is possible to support real-time monitoring of voltage data and to issue early warnings based on preset thresholds or algorithms. Among them, the real-time monitoring and early warning mechanism helps to promptly detect abnormal conditions in the power system, so that corresponding measures can be taken to prevent accidents. The entire process of data collection, packaging, encoding, sending, receiving, decoding and sorting can be completed automatically, reducing the need for manual intervention. At the same time, the automated processing method improves the efficiency and accuracy of data processing, while also reducing labor costs. In addition, it can be easily integrated into the existing power monitoring system and is compatible with other monitoring equipment and systems. This integration and compatibility helps to build a unified power monitoring platform to achieve data sharing and collaborative work. At the same time, this solution has good scalability and can increase or decrease the number of electronic tags and sensors as needed. Scalability provides flexibility for the power system and can be adjusted and expanded according to actual needs.

[0072] Step S104: Conducting electrical tests on the decoded voltage acquisition data to obtain the charged result of the device to be tested.

[0073] As a preferred solution of this embodiment, the decoded voltage acquisition data is subjected to electrical testing and judgment respectively, thereby obtaining the charged result of the device to be tested, specifically:

[0074] According to the preset energized judgment conditions, the voltage collection data collected by the voltage sensor corresponding to each decoded tag IP information within the preset time period are respectively tested for electrical judgment; if there are at least two phase voltage amplitudes greater than or equal to the preset phase voltage peak value in the voltage collection data collected by each voltage sensor, a signal is generated indicating that the device to be tested is energized; otherwise, a signal is generated indicating that the device to be tested is not energized.

[0075] In this embodiment, the non-contact method for determining whether a device is energized reduces the safety risks faced by operators during electrical testing. Furthermore, by analyzing the amplitudes of at least two phase voltages, the accuracy of determining whether the device is energized is improved. The comprehensive determination of multi-phase voltages effectively avoids misjudgments caused by single-phase voltage anomalies. Automated processing enables the automatic collection, processing, and determination of voltage data, reducing the need for manual operation and improving the efficiency of electrical testing. This system is applicable to non-contact high-voltage energization determination in three-phase systems, demonstrating strong versatility and adaptability.

[0076] Furthermore, this embodiment can be combined with modern power inspection technologies such as drone inspections to further enhance the monitoring capabilities and efficiency of power systems. Based on the GIM model of transmission lines, this solution can be combined with three-dimensional route planning inspection methods to optimize inspection routes and improve the comprehensiveness and accuracy of inspections.

[0077] In this embodiment, please refer to Figure 2, which is the RFID electrical test process provided by the present invention. The tag reader sends a wireless radio frequency signal in the air medium through the "reader antenna". The electronic tags of the three sets of "RFID electrical test electronic tags" simultaneously obtain energy by coupling the induced current with the "tag antenna". The electronic tags are powered on and activated, and the electronic tags read the voltage collection result data of the corresponding voltage sensor. The product IP information and voltage collection result data stored in the chip are sent out through the tag antenna in the air medium. The tag reader receives and decodes the relevant data through the "reader antenna". The data is sent to the MCU processor for "OR gate logic" processing, and then the charged status is judged and displayed according to the processing results.

[0078] It should be noted that the data processing "OR gate logic": Simultaneous measurement of three-phase voltage U a 、U b 、U c The magnitude (absolute value), where U a 、U b 、U c They are three phase voltages of the electrical equipment to be tested. As long as one phase voltage amplitude is greater than or equal to Phase voltage peak value is higher than the "power threshold" of the voltage sensor, so the RFID power detection system determines that it is energized. a 、U b 、U c Among the amplitudes (absolute values), at least two phase voltage amplitudes are higher than the voltage sensor's "live threshold," and in the three-probe full-operation-condition electrical testing system, at least two phase voltage sensing probes indicate live voltage. This effectively prevents voltage misjudgment caused by random acquisition by a single probe, while also satisfying the "N-1" redundant configuration for calculating the "live threshold," thereby enabling safe, convenient, accurate, and reliable, non-contact, full-operation-condition, out-of-area, and non-contact voltage acquisition (electrical testing) of conductors through passive acquisition and passive wireless transmission.

[0079] As a preferred solution of this embodiment, the method for constructing the preset charged judgment condition includes:

[0080] According to the rotational symmetry relationship of the three-phase voltage, the voltage amplitude of each phase voltage of the three-phase voltage is calculated; according to the voltage amplitude of each phase voltage, it is calculated that the voltage amplitudes of any two phase voltages in each cycle are not less than a fixed value at the same time; according to the fixed value and the preset electrical threshold value of the electroscope, the preset phase voltage peak value is calculated.

[0081] In this embodiment, the voltage of the high and medium voltage power grid is a 50Hz power frequency sine wave voltage transmitted by three phases (lines). Under normal circumstances, the vector diagram of the three-phase voltage is rotationally symmetrical, and the phase difference between the three is (See Figure 3), assuming the phase voltage peak is U=1, then:

[0082] Phase A voltage amplitude (absolute value) |U a |=|U×sinα|=|sinα|;

[0083] Phase B voltage amplitude (absolute value)

[0084] Phase C voltage amplitude (absolute value)

[0085] At a random measurement moment in each cycle (2π interval), U a 、U b 、U c The distribution of the three-phase voltage amplitude (absolute value, the same below) is shown in the three-phase power frequency voltage vector diagram in Figure 3. In the interval 0≤α≤π, when When sinα and have the same sign (both are positive), so And when When sinα and The signs are opposite [sinα is positive, is negative], so

[0086] Therefore, in Range: Right now It can be seen that for any measurement moment, |U a |and|U c |It is impossible for all to be less than

[0087] exist Range: Right now It can be seen that for any measurement moment, |U a |and|U c |It is impossible for all to be less than

[0088] According to the properties of rotationally symmetric figures, at any measurement moment in the interval π≤α≤2π, |U a |and|U c |It is also impossible that they are all smaller than In summary, at any random measurement moment in each cycle (2π interval), |U a |and|U c |It is impossible for all to be less than Then we can get: at any random measurement moment in each cycle (2π interval), |U a |and|U b |It is impossible for all to be less than |U b |and|U c |It is impossible for all to be less than That is, at any moment in each cycle (2π interval), |U is measured simultaneously a |、|U b |and|U c |Three-phase voltage, then, at least two of the three phase voltage amplitudes are not less than (i.e. ≥):

[0089] In engineering, in order to eliminate the misjudgment of induced voltage caused by coupling induced voltage due to factors such as line installation on the same pole and cross-over, the "electric threshold" of the commonly used contact high-voltage electroscope is set to about one-third of its phase voltage value. For example, the phase voltage value of a 10kV system is One third of its "electric threshold" is Therefore, when a 10kV contact high-voltage tester is used to test electricity, if the tested voltage is higher than 2000V, the tester will show that the voltage is energized, and if the tested voltage is lower than 2000V, the tester will not show that the voltage is energized. Based on the above analysis results, at any moment in each voltage cycle (2π interval), if the "charge threshold" is used as Phase voltage value (1924V) voltage sensor, while measuring |U a |、|U b |and|U c |Three-phase voltage, then, at least two of the three phase voltage amplitudes are not less than (i.e. ≥): It is also higher than the "energized threshold" of the voltage sensor, so at least two phase voltage sensors show that they are energized.

[0090] It can be understood that the voltage data processing uses the preset power judgment conditions of "OR gate logic" to process and judge the power status, which can meet the "N-1" redundant configuration to calculate the "power threshold value", effectively improving the effectiveness and reliability of the RFID full-working condition power detection system.

[0091] The implementation of the above embodiment has the following effects:

[0092] The technical solution of the present invention uses a wireless radio frequency signal sent by a reader antenna, so that the electronic tag can be powered on and activated without physical contact. At the same time, the wireless method improves the convenience of operation, reduces the complexity of wiring, and reduces maintenance costs. In addition, the voltage sensor connected to each electronic tag can collect phase voltage data of the device to be tested in real time, and the real-time data collection helps to timely detect voltage anomalies of the device, thereby improving the safety of the power system. After the electronic tag is powered on and activated, it can automatically read the collected data of the connected voltage sensor and send it to the reader antenna through the tag antenna, reducing manual intervention and improving the efficiency and accuracy of data processing. After the voltage collection data is received by the reader antenna, it can be decoded and analyzed, and then the decoded data can be used for electrical testing judgment. The energized result of the device to be tested can be quickly and accurately obtained, which helps to take corresponding measures in a timely manner, so as to realize the safe, convenient, accurate and reliable voltage collection of the device to be tested under all working conditions, outside the area, and non-contact.

[0093] Example 2

[0094] Please refer to FIG4 , which shows an RFID-based full-condition electrical testing device according to an embodiment of the present invention, including: a response module 201 , a reading module 202 , a sending module 203 and a judgment module 204 ;

[0095] The response module 201 is configured to generate a coupling current between each electronic tag and its corresponding tag antenna in response to the radio frequency signal sent by the reader antenna, so as to activate each electronic tag; wherein each electronic tag corresponds to one tag antenna;

[0096] The reading module 202 is configured to read the voltage data collected by the voltage sensor corresponding to each electronic tag after each electronic tag is powered on and activated; wherein each electronic tag is connected to a corresponding voltage sensor, and each voltage sensor collects a phase voltage of the device to be tested;

[0097] The sending module 203 is used to send the voltage acquisition data read by each electronic tag through the tag antenna, so that the reader antenna receives the sent voltage acquisition data and decodes the voltage acquisition data;

[0098] The judgment module 204 is used to perform electrical testing on the decoded voltage acquisition data, thereby obtaining the charged result of the device to be tested.

[0099] As a preferred solution, in response to the radio frequency signal sent by the reader antenna, a coupling current is generated between each electronic tag and its corresponding tag antenna, so that each electronic tag is powered on and activated, specifically:

[0100] In response to a user clicking on a device to be tested displayed in the electroscope, the reader / writer antenna is controlled to generate a wireless radio frequency signal corresponding to a tag antenna in the device to be tested; wherein the reader / writer antenna is disposed in the electroscope, and the device to be tested is provided with a tag antenna, an electronic tag connected to the tag antenna, and a voltage sensor connected to the electronic tag;

[0101] After each tag antenna receives the wireless radio frequency signal, a coupling current is generated between each tag antenna and the corresponding electronic tag, so that each corresponding electronic tag is powered on and activated by the coupling current.

[0102] As a preferred solution, after each of the electronic tags is powered on and activated, the voltage data collected by the voltage sensor corresponding to each of the electronic tags is read, specifically:

[0103] After each of the electronic tags is powered on and activated, an electrical signal communication connection is established between the electronic tag and its corresponding voltage sensor;

[0104] After each electronic tag is successfully connected to its corresponding voltage sensor, the corresponding voltage collection data is obtained in real time through the voltage sensor within a preset time in the future, so that each electronic tag reads the voltage collection data collected by the corresponding voltage sensor within the preset time period.

[0105] As a preferred solution, the voltage acquisition data read by each electronic tag is sent through the tag antenna so that the reader antenna receives the sent voltage acquisition data and decodes the voltage acquisition data, specifically:

[0106] After each electronic tag reads and obtains the corresponding voltage collection data, the tag antenna connected to the electronic tag packages and encodes the corresponding voltage collection data and the tag IP information, and sends the packaged and encoded data so that the reader antenna receives the packaged and encoded data; wherein each tag IP information corresponds to a tag antenna, its electronic tag, and a voltage sensor;

[0107] After the reader antenna receives the packaged and encoded data, it decodes and organizes the data to obtain voltage data collected by the voltage sensor corresponding to each tag IP information within a preset time period.

[0108] As a preferred solution, the decoded voltage acquisition data is subjected to electrical testing and judgment respectively, thereby obtaining the charged result of the device to be tested, specifically:

[0109] According to the preset power judgment conditions, the voltage data collected by the voltage sensor corresponding to each decoded tag IP information within the preset time period are tested and judged respectively;

[0110] If there are at least two phase voltage amplitudes greater than or equal to the preset phase voltage peak value in the voltage data collected by each voltage sensor, a signal is generated indicating that the electrical device to be tested is energized;

[0111] Otherwise, a signal is generated indicating that the electrical device to be tested is not powered.

[0112] As a preferred solution, the method for constructing the preset charged judgment condition includes:

[0113] According to the rotational symmetry relationship of the three-phase voltage, the voltage amplitude of each phase of the three-phase voltage is calculated;

[0114] According to the voltage amplitude of each phase voltage, it is calculated that the voltage amplitudes of any two phase voltages in each cycle are not less than a fixed value at the same time;

[0115] The preset phase voltage peak value is calculated based on the fixed value and the preset energized threshold value of the electroscope.

[0116] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working process of the device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0117] The implementation of the above embodiment has the following effects:

[0118] The technical solution of the present invention uses a wireless radio frequency signal sent by a reader antenna, so that the electronic tag can be powered on and activated without physical contact. At the same time, the wireless method improves the convenience of operation, reduces the complexity of wiring, and reduces maintenance costs. In addition, the voltage sensor connected to each electronic tag can collect phase voltage data of the device to be tested in real time, and the real-time data collection helps to timely detect voltage anomalies of the device, thereby improving the safety of the power system. After the electronic tag is powered on and activated, it can automatically read the collected data of the connected voltage sensor and send it to the reader antenna through the tag antenna, reducing manual intervention and improving the efficiency and accuracy of data processing. After the voltage collection data is received by the reader antenna, it can be decoded and analyzed, and then the decoded data can be used for electrical testing judgment. The energized result of the device to be tested can be quickly and accurately obtained, which helps to take corresponding measures in a timely manner, so as to realize the safe, convenient, accurate and reliable voltage collection of the device to be tested under all working conditions, outside the area, and non-contact.

[0119] Example 3

[0120] Please refer to Figure 5, which is an RFID-based full-operating condition electrical testing system provided by an embodiment of the present invention, which is used to execute any of the RFID-based full-operating condition electrical testing methods described above, including: an electrical testing reader and an electrical device to be tested and an electrical tester arranged on the electrical device to be tested.

[0121] In this embodiment, the electrical test reader may be a handheld RFID electrical test reader, which is composed of components such as an MCU processor, a power module, a keyboard module, a display module, a communication module, a tag reader, and a reader antenna.

[0122] As a preferred solution of this embodiment, the electrical test reader further includes: a power module, a keyboard module, a display module, a communication module and a tag reader; the tag reader is used to read and decode the voltage collection data collected on the electronic tag; the keyboard module is used to set and input the operating parameters of the electrical test reader; the display module is used to display the electrical test results; the communication module is used to connect to an external Internet of Things, thereby sending the electrical test results to the external Internet of Things; the power module is used to provide the operating voltage of the electrical test reader.

[0123] Furthermore, the tag reader is used to read the voltage data collected on the RFID electrical inspection electronic tag, the reader antenna is used to send and receive radio waves, and the MCU is responsible for processing and managing the collected voltage data; the keyboard module can operate parameter setting input; the display module can display the measurement results; the communication module can be connected to the Internet of Things to realize remote analysis applications; the power module can provide working power for the MCU, keyboard module, display module, communication module, tag reader, and even electronic tags.

[0124] The electrometer reader includes an MCU module and a reader / writer antenna connected to the MCU module. The electrometer includes several phase electrical connection devices, each of which includes an electronic tag and a tag antenna and a voltage sensor connected to the electronic tag.

[0125] In this embodiment, the electrometer can be composed of several RFID electrometer tags. Preferably, the number of RFID electrometer tags is three. The RFID electrometer tags include: three sets of tag antennas, electronic tags, voltage sensors and other components, each set corresponding to the detection of one phase voltage.

[0126] The reader antenna is used to send wireless radio frequency signals and receive the sent voltage acquisition data.

[0127] The MCU is used to decode the voltage acquisition data; and perform electrical testing on the decoded voltage acquisition data to obtain the charged result of the device to be tested.

[0128] The tag antenna is used to generate a coupling current between each electronic tag and its corresponding tag antenna in response to the wireless radio frequency signal sent by the reader antenna, so that each electronic tag is powered on and activated; and transmit the voltage collection data read by each electronic tag.

[0129] The electronic tag is used to read the voltage acquisition data of the corresponding voltage sensor.

[0130] The voltage sensor is used to collect the phase voltage of the electrical equipment to be tested.

[0131] It can be understood that this embodiment adopts a three-probe full-operating-condition electrical testing method to realize the full-operating-condition, out-of-region, non-contact safe, convenient, accurate and reliable voltage collection of the conductor for passive collection and passive wireless transmission. At the same time, by arranging three "source-sensing integrated" voltage sensor probes, the tag reader sends a wireless radio frequency signal; the energy obtained by the electronic tag activates and reads the voltage data, and at the same time transmits the voltage data back; the tag reader receives the voltage data and sends it to the MCU processor; the MCU processor performs "OR gate logic" processing and judges and displays the charged state based on the processing results.

[0132] Furthermore, at any moment, the three-phase voltage U a 、U b 、U c Among the amplitudes (absolute values), at least two phase voltage amplitudes are higher than the "energized threshold" of the voltage sensor, and at least two phase voltage sensing probes in the three-probe full-operation test system show energized voltage. This can effectively prevent the problem of voltage misjudgment caused by random acquisition by a single probe, while also meeting the "N-1" redundant configuration to calculate the "energized threshold", thereby achieving safe, convenient, accurate and reliable voltage acquisition (electrical testing) of conductors in a full-operation, non-regional, and non-contact manner through passive acquisition and passive wireless transmission.

[0133] The implementation of the present invention has the following effects:

[0134] The embodiment of the present invention adopts a full-operating-condition electrical testing method with three or more probes to realize the safe, convenient, accurate and reliable voltage collection of conductors in all operating conditions, out of area, and non-contact manner through passive collection and passive wireless transmission. Moreover, by arranging a voltage sensor probe with "source-sensing-communication integration", the tag reader sends a wireless radio frequency signal; the energy obtained by the electronic tag activates and reads the voltage data, and at the same time transmits the voltage data back; the tag reader receives the voltage data and sends it to the MCU processor, so that the MCU processor processes the voltage collection data and judges and displays the charged state according to the processing results, thereby realizing the safe, convenient, accurate and reliable voltage collection of the electrical equipment to be tested in all operating conditions, out of area, and non-contact manner through passive collection and passive wireless transmission.

[0135] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A full-condition electrical inspection method based on RFID, characterized in that: include: In response to the radio frequency signal sent by the reader antenna, a coupling current is generated between each electronic tag and its corresponding tag antenna, so that each electronic tag is powered on and activated; wherein each electronic tag corresponds to one tag antenna; After each of the electronic tags is powered on and activated, the voltage data collected by the voltage sensor corresponding to each of the electronic tags is read; wherein each electronic tag is connected to a corresponding voltage sensor, and each voltage sensor collects a phase voltage in the device to be tested; The voltage acquisition data read by each electronic tag is transmitted through the tag antenna, so that the reader antenna receives the transmitted voltage acquisition data and decodes the voltage acquisition data; The decoded voltage acquisition data is tested and judged respectively, thereby obtaining the energized results of the equipment to be tested.

2. The RFID-based full-operation-condition electrical testing method according to claim 1, characterized in that: The step of generating a coupling current between each electronic tag and its corresponding tag antenna in response to the wireless radio frequency signal sent by the reader antenna, so as to activate each electronic tag, is specifically as follows: In response to a user clicking on a device to be tested displayed in the electroscope, the reader / writer antenna is controlled to generate a wireless radio frequency signal corresponding to a tag antenna in the device to be tested; wherein the reader / writer antenna is disposed in the electroscope, and the device to be tested is provided with a tag antenna, an electronic tag connected to the tag antenna, and a voltage sensor connected to the electronic tag; After each tag antenna receives the wireless radio frequency signal, a coupling current is generated between each tag antenna and the corresponding electronic tag, so that each corresponding electronic tag is powered on and activated by the coupling current.

3. The RFID-based full-operation-condition electrical testing method according to claim 2, characterized in that: After each of the electronic tags is powered on and activated, the voltage data collected by the voltage sensor corresponding to each of the electronic tags is read, specifically: After each of the electronic tags is powered on and activated, an electrical signal communication connection is established between the electronic tag and its corresponding voltage sensor; After each electronic tag is successfully connected to its corresponding voltage sensor, the corresponding voltage collection data is obtained in real time through the voltage sensor within a preset time in the future, so that each electronic tag reads the voltage collection data collected by the corresponding voltage sensor within the preset time period.

4. The RFID-based full-operation-condition electrical testing method according to claim 3, characterized in that: The voltage acquisition data read by each electronic tag is sent through the tag antenna so that the reader antenna receives the sent voltage acquisition data and decodes the voltage acquisition data, specifically: After each electronic tag reads and obtains the corresponding voltage collection data, the tag antenna connected to the electronic tag packages and encodes the corresponding voltage collection data and the tag IP information, and sends the packaged and encoded data so that the reader antenna receives the packaged and encoded data; wherein each tag IP information corresponds to a tag antenna, its electronic tag, and a voltage sensor; After the reader antenna receives the packaged and encoded data, it decodes and organizes the data to obtain voltage data collected by the voltage sensor corresponding to each tag IP information within a preset time period.

5. The RFID-based full-operation-condition electrical testing method according to claim 4, characterized in that: The decoded voltage acquisition data is subjected to electrical testing and judgment respectively, thereby obtaining the charged result of the device to be tested, specifically: According to the preset power judgment conditions, the voltage data collected by the voltage sensor corresponding to each decoded tag IP information within the preset time period are tested and judged respectively; If there are at least two phase voltage amplitudes greater than or equal to the preset phase voltage peak value in the voltage data collected by each voltage sensor, a signal is generated indicating that the electrical device to be tested is energized; Otherwise, a signal is generated indicating that the electrical device to be tested is not powered.

6. The RFID-based full-operation-condition electrical testing method according to claim 5, characterized in that: The method for constructing the preset charged judgment condition includes: According to the rotational symmetry relationship of the three-phase voltage, the voltage amplitude of each phase of the three-phase voltage is calculated; According to the voltage amplitude of each phase voltage, it is calculated that the voltage amplitudes of any two phase voltages in each cycle are not less than a fixed value at the same time; The preset phase voltage peak value is calculated based on the fixed value and the preset energized threshold value of the electroscope.

7. A full-condition electrical testing device based on RFID, characterized in that: include: Response module, reading module, sending module and judgment module; The response module is configured to generate a coupling current between each electronic tag and its corresponding tag antenna in response to the wireless radio frequency signal sent by the reader antenna, so as to activate each electronic tag; wherein each electronic tag corresponds to one tag antenna; The reading module is used to read the voltage data collected by the voltage sensor corresponding to each electronic tag after each electronic tag is powered on and activated; wherein each electronic tag is connected to a corresponding voltage sensor, and each voltage sensor collects a phase voltage of the electrical device to be tested; The sending module is used to send the voltage acquisition data read by each electronic tag through the tag antenna, so that the reader antenna receives the sent voltage acquisition data and decodes the voltage acquisition data; The judgment module is used to perform electrical testing judgment on the decoded voltage collection data, thereby obtaining the charged result of the device to be tested.

8. A full-condition electrical inspection system based on RFID, characterized in that: Used to perform the RFID-based full-condition electrical testing method according to any one of claims 1 to 6, comprising: an electrical testing reader, a device to be tested, and an electrical tester provided on the device to be tested; The electroscope reader includes an MCU module and a reader / writer antenna connected to the MCU module. The electroscope includes a plurality of phase electrical connection devices, each of which includes an electronic tag and a tag antenna and a voltage sensor connected to the electronic tag. The reader antenna is used to send wireless radio frequency signals and receive the sent voltage acquisition data; The MCU is used to decode the voltage acquisition data; perform electrical testing on the decoded voltage acquisition data to obtain the charged result of the device to be tested; The tag antenna is used to generate a coupling current between each electronic tag and its corresponding tag antenna in response to the wireless radio frequency signal sent by the reader antenna, so that each electronic tag is powered on and activated; and transmit the voltage data collected by each electronic tag; The electronic tag is used to read the voltage data collected by the corresponding voltage sensor; The voltage sensor is used to collect the phase voltage of the electrical equipment to be tested.

9. The RFID-based full-operation-condition electrical testing system according to claim 8, characterized in that: The electrical inspection reader further includes: a power module, a keyboard module, a display module, a communication module and a tag reader; The tag reader is used to read and decode the voltage data collected on the electronic tag; The keyboard module is used to input the setting of the operating parameters of the electrometer reader; The display module is used to display the electrical test results; The communication module is used to connect to the external Internet of Things, thereby sending the electrical test results to the external Internet of Things; The power supply module is used to provide the working voltage of the electrical test reader.

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