CN113447729A - Test method of wireless radio frequency system and computer device - Google Patents
Test method of wireless radio frequency system and computer device Download PDFInfo
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Abstract
The invention provides a test method and a computer device of a wireless radio frequency system, wherein the method comprises the steps of communicating with at least one electronic tag through a wireless radio frequency antenna, and rotating the wireless radio frequency antenna along the axis of the wireless radio frequency antenna at a preset rotating speed; the electronic tag moves at a preset speed relative to the wireless radio frequency antenna; calculating the correct response times of the electronic tag forming correct communication data in the test time period, judging whether the correct response times of the electronic tag meet preset requirements, and if not, adjusting at least one of the following parameters: the rotation speed of the radio frequency antenna, the moving speed of the electronic tag, the area of the radio frequency antenna and the vertical distance between the radio frequency antenna and the electronic tag. The invention also provides a computer device for realizing the method. The invention can simulate the actual condition of the production line to test the wireless radio frequency system so as to ensure that the identification rate of the electronic tag meets the requirement.
Description
Technical Field
The invention relates to the technical field of wireless radio frequency, in particular to a testing method of a wireless radio frequency system and a computer device for realizing the method.
Background
The radio frequency communication system generally includes a radio frequency antenna and an electronic tag which are separated from each other, and the reader communicates with the electronic tag through a radio frequency chip, for example, to transmit data to the electronic tag or read data from the electronic tag. Radio frequency communication has been widely used in various fields, such as production of products, transportation and storage of goods, and the like.
As people demand personalized customized products increasingly, for example, more and more people like to customize personalized clothing, young families customize furniture for new residences, and the like. The personalized customization means that the number of products or parts of a certain specification is very small, even only one product or part is needed, which puts brand new technical requirements and management requirements on workshop manufacturing of a factory, and one feasible technical scheme is to introduce a UHF (ultra high frequency) radio frequency identification technology, namely an RFID technology. The RFID technology referred to herein below is UHF (ultra high frequency) RFID technology. When the RFID technology is applied to a production line, each customized product or its component needs to be bound (e.g., fixed, adhered or embedded by a binding wire) with a unique coded RFID tag, and identification and tracking are performed on a production line, a warehouse or a logistics link of a workshop in a flow line (single piece or multiple pieces) manner or in a batch (tens of pieces or even hundreds of pieces) manner by using an RFID identification system. Generally, management requires a tag identification rate of not less than 99.995%. The existing RFID identification technology and its system have difficulty in satisfying this requirement due to the limitation of production conditions.
The wireless radio frequency communication system mainly comprises an RFID electronic tag, an RFID reader-writer and an RFID antenna. The RFID electronic tag is also called as a radio frequency tag, a transponder and a data carrier and consists of a chip and an antenna, the types of the RFID electronic tag antenna comprise an etching antenna, a PCB (printed Circuit Board) copper-plated antenna, a ceramic antenna and the like, and the etching antenna has the advantages of lower cost and the disadvantage of the worst distance reading effect of the same pad distance; the PCB copper-plated antenna has the advantages of better reading distance and higher cost; the ceramic antenna has the advantage of best performance and the disadvantage of high cost.
At present, an electronic tag is a metal-resistant RFID tag, and is packaged by a special anti-magnetic wave-absorbing material, so that the problem that the electronic tag cannot be attached to a metal surface for use is technically solved, and the electronic tag can be waterproof, acid-proof, alkali-proof, anti-collision and high-temperature-resistant and can be used outdoors. The metal-resistant electronic tag can be attached to metal to obtain good reading performance even if the reading distance is longer than that of the metal-resistant electronic tag in the air. Due to the adoption of a special circuit design, the electronic tag can effectively prevent metal from interfering radio frequency signals, and has the following outstanding performances: the reading distance of the metal paste is farther than the recognition distance of the metal paste.
An RFID reader is a device for reading and writing an electronic tag, and usually requires an RFID antenna to realize communication with the electronic tag, the RFID antenna is also called a reader antenna or a wireless radio frequency antenna, and is used for transmitting radio frequency signals between the electronic tag and the reader, and the commonly used RFID antenna mainly includes a wired polarized antenna and a circularly polarized antenna.
The electronic tag and the RFID reader-writer realize space (non-contact) coupling of radio frequency signals through coupling elements of antennas of the electronic tag and the RFID reader-writer, and energy transfer and data exchange are realized in a coupling channel according to a time sequence relation. When the RFID system is adopted for wireless radio frequency identification, the RFID reader-writer sends out an inquiry signal through the wireless radio frequency antenna, after the electronic tag receives the inquiry signal, part of energy of the inquiry signal is used for a working power supply of an internal chip of the electronic tag, and the other part of the inquiry signal is modulated by an internal circuit of the electronic tag and then returns to the RFID reader-writer.
Therefore, whether the RFID reader can identify the electronic tag depends on whether the energy obtained by the antenna of the electronic tag is enough to activate the chip and the circuit inside the electronic tag. The larger the area of the electronic tag is, the larger the size of the electronic tag is, the stronger the energy obtaining capability is; the larger the distance between the RFID antenna and the antenna of the electronic tag, the smaller the energy obtained by the antenna of the electronic tag.
For a linearly polarized RFID antenna, when the polarization direction of the antenna of the electronic tag is consistent with the linear polarization direction of the RFID antenna, the induced signal is maximum, the identification distance of the RFID antenna is farthest at the moment, and the identification sensitivity is high; when the polarization direction of the antenna of the electronic tag deviates more and more from the linear polarization direction, the smaller the induced signal is, the smaller the identification distance at the moment is, and the identification sensitivity is deteriorated; when the polarization direction of the antenna of the electronic tag is orthogonal to the linear polarization direction, the induced signal is zero, and the electronic tag cannot be identified.
For an ideal circularly polarized RFID antenna, the induced signals are the same regardless of the polarization direction of the antenna of the electronic tag, and there is no difference, so that the circularly polarized RFID antenna is used in most applications. However, the actually produced circularly polarized RFID antenna cannot be in an ideal state, and important indexes such as lobe widths of different models also differ. The larger the lobe width is, the lower the requirement on the consistency of the polarization directions of the antenna of the electronic tag and the RFID antenna is, and the smaller the identification distance is; the smaller the lobe width is, the higher the requirement on the consistency of the polarization directions of the antenna of the electronic tag and the RFID antenna is, and the larger the identification distance is.
A line production wireless radio frequency identification system applied to a production line of a workshop, a warehouse, a logistics link and the like usually adopts a fixed RFID antenna. On one hand, due to the limitation of production conditions and the like, some electronic tags are required to be waterproof, corrosion-resistant and high-temperature resistant, some electronic tags are required to be small-sized, and the identification distance cannot be too small, and the like. On the other hand, the polarization directions of the antennas of one electronic tag bound on one piece of product or on one part of the product are random, and the polarization directions of each electronic tag antenna and the polarization directions of the RFID antennas are not consistent or tend to be consistent, so that the electronic tags are easy to miss reading in the case. On the other hand, the line production of the production line means that the identification time of each electronic tag is limited, and tens or hundreds of electronic tags need to be identified in a limited time slice, which brings extremely high requirements on the identification of the electronic tags. The factors of the three aspects are superposed, so that the existing RFID identification technology and the system thereof cannot meet the identification rate requirement of not less than 99.995% required by production management.
For this reason, it is necessary to test the performance of the electronic tag, for example, to test the influence of the identification distance and the polarization direction of the electronic tag on the identification energy, and as disclosed in the chinese patent application with publication number CN101750547A, a system and a method for measuring power lines such as a reader antenna are disclosed, the system includes a reader placed outside a microwave darkroom, a middleware, a turntable controller, a slider controller, an upper computer, and a drawing printer; an electronic tag, a rotary table, a horizontal guide rail, a support, two positioning sensors, a reader-writer antenna and a sliding block are arranged in the microwave darkroom. When the device is used for testing, the same power feedback point in the three-dimensional direction of the antenna of the reader-writer is measured. However, the device does not simulate the situation that a plurality of electronic tags move at a certain speed on a production line, and how to arrange reasonable RFID antennas on the production line or how to move at the certain speed to meet the situation of the identification rate requirement cannot be tested.
Disclosure of Invention
The first purpose of the present invention is to provide a method for testing a radio frequency system, which can simulate the radio frequency system under the mobile environment of an electronic tag on a production line.
The second objective of the present invention is to provide a computer apparatus for implementing the method for testing the wireless rf system.
In order to achieve the first object of the invention, the testing method of the wireless radio frequency system provided by the invention comprises the steps of communicating with at least one electronic tag through a wireless radio frequency antenna, wherein the wireless radio frequency antenna rotates along the axis of the wireless radio frequency antenna at a preset rotating speed; the electronic tag moves at a preset speed relative to the wireless radio frequency antenna, and the wireless radio frequency antenna is consistent with or tends to be consistent with the polarization direction of the antenna of the electronic tag at least once in a rotation period; calculating the correct response times of the electronic tag forming correct communication data in the test time period, judging whether the correct response times of the electronic tag meet preset requirements, and if not, adjusting at least one of the following parameters: the rotation speed of the radio frequency antenna, the moving speed of the electronic tag, the area of the radio frequency antenna and the vertical distance between the radio frequency antenna and the electronic tag.
According to the scheme, when the electronic tag is tested, the electronic tag moves relative to the radio frequency antenna at a certain speed, namely the actual condition of a production line is simulated, so that the test can be performed on a radio frequency system consisting of the radio frequency antenna and the electronic tag of the production line, and the arrangement of the radio frequency antenna and the design of the electronic tag meet the identification requirement of the production line on the electronic tag.
In addition, as the polarization direction of the radio frequency antenna is consistent with or tends to be consistent with the polarization direction of the antenna of the electronic tag at least once every rotation period of the radio frequency antenna, the radio frequency antenna can be ensured to correctly read signals sent by the electronic tag, the identification rate of the electronic tag can be effectively improved, the condition that each electronic tag is identified on a production line can be simulated accurately, and the radio frequency antenna on the production line has higher identification sensitivity.
In a preferred embodiment, the rotation of the rf antenna along its axis at a predetermined rotation speed includes: stopping the wireless radio frequency antenna for a preset time after the wireless radio frequency antenna rotates for a preset angle at a preset rotating speed; adjusting the rotation parameters of the radio frequency antenna comprises: adjusting the speed of the preset rotation, the angle of the preset rotation and the length of the preset time.
Because the wireless radio frequency system reads the data of the electronic tag in the preset time period, the time for the wireless radio frequency system to read the data of the electronic tag can be increased or reduced by adjusting the length of the preset time, so that the wireless radio frequency system can have enough time to read the data of the electronic tag, and the condition that the time for the wireless radio frequency antenna to cover the electronic tag is too long to reduce the normal flow rate of a production line can be ensured, thereby ensuring the production efficiency.
The further scheme is that if the correct response times of the electronic tag are confirmed not to meet the preset requirements, the moving speed of the electronic tag is not adjusted, and the area of the wireless radio frequency antenna is adjusted; or the area of the radio frequency antenna is not adjusted, and the moving speed of the electronic tag is adjusted.
Because the nature of production line is different, some production lines have specific requirements to the moving speed of product, and other production lines also have special requirements to the area of radio frequency antenna, consequently, under the condition that the moving speed of electronic tags can not change, through adjusting the area of radio frequency antenna, or under the condition that the area of radio frequency antenna can not adjust, adjust the moving speed of electronic tags, can ensure that radio frequency antenna can accurately read the electronic tags that satisfy the quantity requirement of presetting, and then satisfy the production demand of production line.
The further scheme is that the step of judging whether the correct response times of the electronic tag meet the preset requirements or not comprises the following steps: and calculating whether the correct response times of the electronic tag exceed a preset correct response time threshold value.
By setting the correct response time threshold as a reference value for judging whether the correct response time of the electronic tag meets the requirement, the test result of the wireless radio frequency system can be simply, accurately and quickly confirmed, and the test efficiency is improved.
Further, the adjusting the moving speed of the electronic tag comprises: and calculating the coverage time required by the radio frequency antenna for reading the data of the electronic tag, and adjusting the moving speed of the electronic tag by taking the passing time of the electronic tag in the reading range of the radio frequency antenna not less than the coverage time as a reference.
Therefore, the reasonable covering time is set, the moving speed of the electronic tag is adjusted according to the covering time, the moving speed of the electronic tag can be adjusted quickly and accurately, and the testing efficiency is improved.
Preferably, the coverage time is a ratio of an area of the radio frequency antenna to a moving speed of the electronic tag.
In a further aspect, the method further comprises: and acquiring TID codes of a plurality of electronic tags, and writing a unique ID code into the electronic tag corresponding to the TID code according to the acquired TID codes. Therefore, the test device can initialize a plurality of electronic tags at the same time, and the efficiency of initializing the electronic tags is improved.
In a further aspect, the method further comprises: and placing at least one electronic tag in the anti-interference area, calculating the identification times of the electronic tag interference data forming correct communication data in the test time period, and if the identification times of the electronic tag interference data exceed a preset interference time threshold, adjusting the anti-interference area.
Therefore, the wireless radio frequency system is subjected to interference test by placing a plurality of electronic tags in an anti-interference area, the identification condition of the wireless radio frequency antenna on the electronic tags in the anti-interference area can be tested, and then the anti-interference area is adjusted, or the size of the wireless radio frequency antenna is adjusted, so that the wireless radio frequency antenna cannot mistakenly read the electronic tags in the anti-interference area when the wireless radio frequency antenna is applied to a production line.
The further proposal is that the number of the electronic tags is more than two; the method further comprises the following steps: and calculating the correct response times of the electronic tag of each electronic tag in the test time period, and determining the quality grade of the electronic tag according to the correct response times of the electronic tag.
Therefore, the quality grade of each electronic tag is determined by calculating the correct response times of the electronic tag of each electronic tag in the test time period, the quality condition of each electronic tag can be determined quickly, the electronic tag with poor quality is prevented from being applied to a production line, and the identification rate of correctly identifying the electronic tag by the radio frequency antenna is improved.
In order to achieve the second objective, the present invention provides a computer device including a processor and a memory, wherein the memory stores a computer program, and the computer program implements the steps of the method for testing a radio frequency system when executed by the processor.
Drawings
Fig. 1 is a structural diagram of a testing apparatus to which an embodiment of a testing method of a radio frequency system of the present invention is applied.
Fig. 2 is a flowchart of an embodiment of a method for testing a radio frequency system according to the present invention.
Fig. 3 is a schematic view of a test interface of a test apparatus applying an embodiment of the test method of the radio frequency system of the present invention.
Fig. 4 is a flowchart illustrating a first antenna rotation method in an embodiment of a method for testing a radio frequency system according to the present invention.
Fig. 5 is a flowchart illustrating a second antenna rotation method in an embodiment of a method for testing a radio frequency system according to the present invention.
Fig. 6 is a flow chart of testing the identification distance of the electronic tag in the embodiment of the testing method of the radio frequency system of the present invention.
Fig. 7 is a flowchart of determining the quality level of the electronic tag in the embodiment of the testing method of the radio frequency system of the present invention.
Fig. 8 is a flowchart of a test for confirming an anti-interference area of an electronic tag in an embodiment of a method for testing a radio frequency system according to the present invention.
Fig. 9 is a flow chart illustrating a process of writing data to an electronic tag according to an embodiment of the method for testing a radio frequency system of the present invention.
Fig. 10 is a flowchart illustrating a method for testing a radio frequency system according to an embodiment of the present invention.
The invention is further explained with reference to the drawings and the embodiments.
Detailed Description
The testing method of the wireless radio frequency system is applied to a testing device of the wireless radio frequency system, the testing device of the wireless radio frequency system can test a wireless radio frequency antenna and an electronic tag, preferably, the testing device is provided with a processor and a memory, a computer readable storage medium is stored in the memory, and the testing method of the wireless radio frequency system can be realized when the processor executes the computer readable storage medium.
The embodiment of the test method of the wireless radio frequency system comprises the following steps:
the embodiment is applied to a testing device of a radio frequency system, and referring to fig. 1, the testing device of the radio frequency system includes a stand column 10, a control box 15 is arranged at the upper end of the stand column 10, a reader-writer is arranged in the control box 15, radio frequency antennas of the reader-writer are electrically connected, and the reader-writer transmits radio frequency signals to an electronic tag through the radio frequency antennas and receives the radio frequency signals fed back by the electronic tag.
A radio frequency antenna support plate 14 is arranged below the control box 15, and a radio frequency antenna is arranged on the lower surface of the radio frequency antenna support plate 14, and preferably, the radio frequency antenna is a circularly polarized antenna. A motor 18 is disposed above the rf antenna supporting plate 14, and the motor 18 can drive the rf antenna supporting plate 14 to rotate, for example, clockwise or counterclockwise, so as to drive the rf antenna to rotate forward or backward.
A display bracket 16 is arranged on one side of the upright post 15, and a display 17 is connected to one end of the display bracket 16.
The testing device of the radio frequency system is further provided with an electronic tag placing table 13, the electronic tag placing table 13 can move along the horizontal direction relative to the horizontal guide rail 11, and preferably, the electronic tag placing table 13 can move to be right below the radio frequency antenna support plate 14. The horizontal guide rail 11 is provided with a screw rod 22, the screw rod 22 is driven by a motor 21, the electronic tag placing table 13 is provided with a threaded hole, the screw rod 22 penetrates through the threaded hole and can rotate relative to the threaded hole, and when the screw rod 22 rotates, the electronic tag placing table 13 is driven to move along the horizontal guide rail 11. When the electronic tag is placed on the upper surface of the electronic tag placing table 13, the electronic tag can move relative to the radio frequency antenna along with the movement of the electronic tag placing table 13.
The upright post 10 is further provided with a screw rod 19, the screw rod 19 is driven by a motor 20, the horizontal guide rail 11 is provided with another threaded hole, and the screw rod 19 can penetrate through the threaded hole in the horizontal guide rail 11, so that when the screw rod 19 rotates, the horizontal guide rail 11 is driven to move along the extending direction of the upright post 10. In this embodiment, the upright column 10 extends in the vertical direction, so that the lead screw 19 can adjust the distance between the electronic tag placing table 13 and the radio frequency antenna supporting plate 14, that is, the vertical distance between the radio frequency antenna and the electronic tag.
The bottom end of the upright post 10 is provided with a chassis 23, and the lower end of the chassis 23 is provided with a plurality of rollers 24 so as to facilitate the movement of the testing device of the radio frequency system.
Preferably, the electronic tag placing table 13 is divided into a plurality of different areas according to the size of the radio frequency antenna. For example, if the size of the radio frequency antenna is 400 mm × 400 mm, the electronic tag placement table 13 is divided into an area a (a square with a side length of 200 mm), an area a1 (a square with a side length of 400 mm), an area B (a square with a side length of 600 mm), and an area C (a square with a side length of 800 mm), where the area a is a high-sensitivity identification area, the area a1 is a second-highest-sensitivity identification area, the area B is a low-sensitivity identification area, and the area C is an unidentifiable area. When the distance between the electronic tag placing table 13 and the radio frequency antenna support plate 14 is fixed, the identification sensitivity of the electronic tag is gradually weakened from the area a1 to the area C until the electronic tag is not identifiable.
Further, a three-axis controlled PLC and a driving module are arranged in the control box 15, and respectively control the motor 18 to operate, drive the wireless rf antenna supporting plate 14 to rotate, and control the motors 20 and 21 to operate, so as to drive the electronic tag placing table 13 to move in the horizontal direction and the vertical direction.
Further, the reader-writer is an RFID reader-writer of a multi-core CPU, communicates with a PLC in the control box 15 through an RS232/RS485 serial port and an I/O port, and is connected to the display 17 through an HDMI to display contents, and is also connected to a wireless keyboard and a mouse through a USB to input contents, and is connected to a WEB server through an RJ45 port network cable or a WLAN.
The operation flow of the present embodiment will be described with reference to fig. 2. First, one or more electronic tags to be tested are placed on the electronic tag placing table 13, and the front side of each electronic tag is arranged upward, that is, the antenna of the electronic tag faces the radio frequency antenna. Next, step S21 is executed to drive the rf antenna to rotate in a predetermined manner, in this embodiment, the rf antenna rotates around its axis in two different manners, which will be described in detail below.
Then, step S22 is performed to drive the tray to move at a preset speed, specifically, to drive the movement in the horizontal direction on the electronic label placing table 13. It should be noted that, in the present embodiment, the electronic tag moves at a certain speed relative to the radio frequency antenna, which means that the vertical distance between the radio frequency antenna and the electronic tag is kept unchanged, and the electronic tag only moves in the horizontal direction relative to the radio frequency antenna. The present embodiment does not adjust the vertical distance between the electronic tag and the radio frequency antenna unless the identification distance of the electronic tag is tested.
Then, step S23 is executed, the reader communicates with the electronic tag through the rf antenna, for example, the rf antenna writes data into the electronic tag, or the rf antenna reads data from the electronic tag, and step S24 is executed to calculate the number of times the electronic tag responds correctly. For example, when the wireless rf antenna reads data from the electronic tag, the number of times the electronic tag correctly transmits data to the reader/writer is counted. Then, step S25 is executed to determine whether the correct response times of the electronic tag exceed a preset correct response time threshold, and if so, it indicates that the current rotation speed of the radio frequency antenna, the moving speed of the electronic tag, the installation position of the radio frequency antenna, the size of the radio frequency antenna, and the vertical distance between the radio frequency antenna and the electronic tag are proper, and the parameters need not to be adjusted. Otherwise, step S26 is executed to adjust target parameters, where the target parameters include one or more of a rotation speed of the rf antenna, a moving speed of the electronic tag, a setting position of the rf antenna, a size of the rf antenna, and a vertical distance between the rf antenna and the electronic tag. After the target parameter is adjusted, the procedure returns to step S21, and the wireless radio frequency system is tested again with the adjusted target parameter.
The present embodiment may adjust one or more target parameters, that is, there are a plurality of different test modes, for which a plurality of different parameters and a plurality of different test options are displayed on the display 17, so as to facilitate the different test modes. Referring to fig. 3, a window of a plurality of functional modules, such as flow dynamic identification, quality inspection of electronic tags, parameter reading, parameter saving, test read distance, test write distance, single tag writing, multi-tag initialization, is displayed on a main menu page of the testing apparatus, and a tester can enter different windows and execute corresponding testing modes as required. For example, radio frequency antenna channel selection 1, output power selection 33dBm, frequency point type selection in the United states, frequency point selection 902.75MHz, protocol selection ISO 1800-6C, link parameter selection PR _ ASK/Miller4/250kHz, group read frequency input 40 pieces/second, identification selection EPC, and the like.
After the parameters are set, the flow operation environment of the production line can be simulated to test the radio frequency system, for example, the flow rate of the production line in a production workshop is 10 m/min, the manufacturing conditions only allow the corrosion-resistant cylindrical tag with the small size below phi 6 mm and capable of resisting the high temperature of 150 ℃, the identification distance of the electronic tag is not less than 900 mm, and the identification rate is not less than 99.995% as required by production management. In accordance with the aboveIn view of the small size of the electronic tag and the randomness of the antenna polarization direction of the electronic tag bound on the product on the production line, it is difficult to keep or tend to be consistent with the polarization direction of the radio frequency antenna, therefore, the concept of the invention is as follows: when flow velocity V of the production linerelativeAt a certain time, selecting or customizing the electronic tags meeting the application condition and the flow direction coverage size YflowA sufficiently large radio frequency antenna; when the flow direction of the radio frequency antenna covers the size YflowAt a certain time, the flow velocity V of the electronic tag is adjustedrelativeThereby ensuring that the electronic tag flowing through the wireless radio frequency antenna has enough coverage time TcoverAnd the matching relation satisfies: t iscover＝Yflow/Vrelative>n/freaderWherein: f. ofreaderFor the reading frequency of the reader-writer, the minimum effective reading time Tminvalue＝n/freader；n＝180/Lobewidth，LobewidthThe lobe width of the antenna.
Specifically, assuming that the identification distance of the test is 1000 mm, the electronic tag selects a metal-resistant UHF electronic tag with Φ 5 mm × H4 mm, the selection frequency range of the radio frequency antenna is 902MHz to 928MHz, the gain is 12dBi, and the lobe widths are respectively in the horizontal direction: 45 °, vertical direction: 45 degrees, and the coverage sizes of the transverse direction (section direction) and the flow direction (production line flow direction) are respectively 400 mm and 400 mm. And, the reading frequency f of the reader/writerreader40 times/sec.
Therefore, the antenna coverage time T of the electronic tag can be calculatedcoverThe dimension of the radio frequency antenna flow coverage is 400 mm/(10 m/min of the production line flow speed), 400/(10 × 1000/(60 × 1000)) ms, 2400 ms.
Because the lobe width of the radio frequency antenna is respectively in the horizontal direction: 45 °, vertical direction: for an electronic tag which comes to the coverage area randomly, if the radio frequency antenna rotates 45 degrees each time and stops rotating for a time slice, the polarization directions of the antenna of the electronic tag and the radio frequency antenna always coincide or tend to coincide after rotating for 4 times, and the coincidence is realizedTime slice T called label minimum effective reading time sliceminvalueT can be obtained by calculating the following formulaminvalueAs can be seen, the above calculation needs to satisfy T (180/45)/40 × 1000 ms (100 ms)cover>n/freaderThe requirements of (1).
In this embodiment, the rf antenna may operate in two different ways, i.e., two ways of rotation. Referring to fig. 4, the first rotation method of the rf antenna firstly performs step S40 to start the process of reading the electronic tag data, and then performs step S41 to stop rotating for a first time.
Then, the rf antenna rotates forward at a first rotation speed for a first angle, for example, rotates forward at 45 ° at 200 rpm, and step S43 is executed to determine whether the maximum angle, i.e., 360 °, is reached, if the maximum angle is not reached, the process returns to step S41, and if the maximum angle is reached, the process returns to step S44, and stops rotating for a first time TstopAnd reading the data of the electronic tag in the first time. For example, the first time TstopIs 200 milliseconds. Then, step S45 is executed, the rf antenna reverses the first angle at the first rotation speed, for example, reverses 45 ° at a rotation speed of 200 rpm, and step S46 is executed, it is determined whether the maximum angle, that is, 360 ° is reached, if the maximum angle is not reached, the process returns to step S44, if the maximum angle is reached, step S47 is executed, it is determined whether the test time is reached, for example, the preset test time is 2400 milliseconds, if the test time is not reached, the process returns to step S41, if the preset test time is reached, step S48 is executed, the process of reading the electronic tag data is ended, and step S49 is executed, and the number of correct responses of the electronic tag is calculated.
In this embodiment, the test device controls the rotation and the stop of the wireless rf antenna, and the reader-writer also synchronously reads the data of the electronic tag, and the wireless rf antenna and the reader-writer communicate with each other through an RS232/RS485 serial port and transmit parameters, so that the rotation of the wireless rf antenna and the reading of the data of the electronic tag by the reader-writer are executed in parallel.
Since in this embodiment Tvalue＝T stop200 milliseconds. According to the foregoing description, the reader-writer recognizes the frequency freaderIs 40 sheets/second, i.e. reads the tag every 25 ms, and therefore at TvalueThe reader-writer can read the label 8 times in 200 ms time slice. Because the radio frequency antenna rotates 180 degrees at every 4 times, namely about 800 milliseconds, the reader-writer can read the electronic tag 8 × 4-32 times, and when the radio frequency antenna covers the time slice TcoverWhen the time is 2400 milliseconds, the reader can read the electronic tag 8 × 4 × (2400/800) ═ 96 times. However, since the antenna orientation of the electronic tag is random, the sum of the number of electronic tags read by the group reading (i.e. the cyclic counting with anti-collision algorithm of the reader-writer) function or the number of times each electronic tag is read is always less than the ideal value of 96 times. In the practical application of the production line, the requirement of the electronic tag identification rate of the whole production line can be ensured as long as each electronic tag is identified once.
In practical application, parameters of actually matching the radio frequency antenna and the electronic tag need to be determined according to actual conditions, and the specifically determined parameters include: first time T for stopping rotation of wireless radio frequency antennastop(actually, the effective reading time T is adjustedvalue) Single rotation angle, maximum rotation angle, coverage time TcoverReading frequency f of reader-writerreaderAnd identifying the distance.
Referring to fig. 5, the second rotation method of the rf antenna first performs step S50 to start the process of reading the electronic tag data, and then performs step S51 to rotate the rf antenna forward by a second rotation speed by a second angle, for example, the second rotation speed is 0.625 rpm, and the second angle is 360 °. Then, step S52 is executed, and the radio frequency antenna stops rotating for a second time and reads the data of the electronic tag, where the second time is 40 milliseconds in this embodiment.
Next, step S53 is executed to reverse the second angle at a second rotation speed, for example, the second rotation speed is 0.625 rpm, and the second angle is 360 °. Then, step S54 is executed, and the radio frequency antenna stops rotating for a second time. Then, step S55 is executed to determine whether the preset test time, for example 2400 ms, has arrived, if not, the process returns to step S51, if the preset test time has arrived, step S56 is executed to end the process of reading the electronic tag data, and then step S57 is executed to calculate the number of times the electronic tag correctly responds.
In the second mode, the rotation of the radio frequency antenna is 0.625 rotation/s, i.e. 1600 ms per rotation time, 800 ms per 180 ° rotation time, the antenna lobe width is 45 °, therefore Tvalue800 mm/(180/45) 200 ms. In addition, the reader-writer reads the frequency freaderAt 40 sheets/second, i.e. reading the tag every 25 milliseconds, then at TvalueThe reader-writer can read the electronic tag 8 times within 200 milliseconds. Therefore, each time the radio frequency antenna rotates 180 degrees, the reader-writer can read the electronic tag for 8 × 4 ═ 32 times, and when the radio frequency antenna covers the time slice TcoverWhen 2400 milliseconds, the reader can recognize the electronic tag 96 times by 8 × 4 × (2400/800). However, due to the randomness of the antenna orientation of the electronic tags, the sum of the number of electronic tags read by the group reading function or the number of times each electronic tag is read is always less than the ideal value of 96 times. In the practical application of the production line, the requirement of the electronic tag identification rate of the whole production line can be ensured as long as each electronic tag is identified once.
In practical application, parameters of actually matching the radio frequency antenna and the electronic tag need to be determined according to actual conditions, and the specifically determined parameters include: rotation speed, rotation angle and coverage time T of wireless radio frequency antennacoverReading frequency f of reader-writerreaderAnd the identification distance of the electronic tag.
With the testing device of this embodiment, the identification distance of the electronic tag may also be tested, referring to fig. 6, when testing the identification distance of the electronic tag, step S61 is executed first, and the electronic tag to be tested is placed on the electronic tag placing table 13, where the electronic tag to be tested may be one or more, and of course, in order to improve the accuracy of the test, only one electronic tag may be tested at a time.
Then, step S62 is executed to determineThe rotation of the radio frequency antenna is performed in the first way or the second way, and then step S63 is executed to set the vertical distance between the radio frequency antenna and the electronic tag to be the minimum distance, i.e. the distance between the radio frequency antenna supporting plate 14 and the electronic tag placing table 13 to be the minimum value SminFor example 200 mm. It should be noted that, when testing the identification distance, the electronic tag placing table 13 does not move in the horizontal direction, but only moves in the vertical direction, and preferably, the electronic tag placing table 13 is located right below the radio frequency antenna support plate 14 to ensure that the electronic tag to be tested is always located right below the radio frequency antenna.
During testing, a variable i needs to be set, the initial value of the variable i is 0, and a testing distance S [ i ] is set]Preferably, S [ i ]]＝Smin+50 × (i-1). In the testing time period of 4800 ms, the reader circularly calls the EPC writing method to write a datum, such as the ID code 2021030600000000+ i, until the writing is successful, and the testing device automatically records the distance S [ i ] of each successful writing datum]And the variable i increments once. Therefore, after the step S63 is executed, the step S64 is executed to determine whether the data is successfully written into the electronic tag, and if so, the step S66 is executed to increase the vertical distance between the rf antenna and the electronic tag and write the data into the electronic tag again.
If the data cannot be successfully written, step S65 is executed, whether the variable i is 0 is determined, if so, it indicates that the electronic tag cannot successfully write the data at the minimum test distance, which indicates that the electronic tag performance is abnormal, the test is ended, and a prompt statement "the electronic tag cannot write and retry by changing to a tag" is issued. If the variable i is not 0, step S67 is executed, the last distance S [ i-1] is recorded, step S68 is executed, whether the preset number of tests is reached is determined, if the preset number of tests is not reached, step S70 is executed, the vertical distance between the radio frequency antenna and the electronic tag is reduced, for example, i is set to i-3 (if the calculation result is that i is set to 1, i is set to 0), and the process returns to step S64, and data is written into the electronic tag again. If the preset number of tests is reached, step S69 is executed, and the arithmetic mean of the maximum recognition distances obtained from the multiple tests is taken as the recognition distance of the electronic tag.
Of course, the above method is that the ID code written to the electronic tag every time is different, that is, the written ID code is incremented, and in practical application, the ID code written every time may be the same, and at this time, it is necessary to record the number N [ i ] of times the electronic tag is read within the quality inspection time (e.g., 2400 milliseconds) of the electronic tag, and record the current distance S [ i ].
The embodiment can also detect the quality levels of a plurality of electronic tags. Referring to fig. 7, first, step S71 is executed to place an electronic tag to be tested on an electronic tag placement table, where the electronic tag to be tested may be one electronic tag or multiple electronic tags, and the front surface of each electronic tag faces upward. Then, step S72 is executed to determine whether the rotation mode of the rf antenna is the first mode or the second mode, and step S73 is executed to enable the reader/writer to transmit signals, such as signals for reading the data of the electronic tags, to the electronic tags through the rf antenna. Then, step S74 is executed to record the reading times of each electronic tag responding correctly within a preset testing time period, where the testing time period may be the quality testing time Tqc of the electronic tag, such as 2400 milliseconds. If a plurality of electronic tags are tested simultaneously, the times of identification of each electronic tag in a testing time period, namely the reading times of correct response, are recorded respectively as N [ i ] (i is 1, 2.
Finally, step S75 is executed to determine the quality grade of each electronic tag according to the number of times of reading the correct response of the electronic tag. Assuming that all the electronic tags are placed in the area a and the distance between the electronic tag placing table 13 and the radio frequency antenna support plate 14 is 1000 mm, the minimum effective reading time slice T of the electronic tags is calculated according to the above calculation conditionsminvalue100 ms, that is, 2400 mm, theoretically, the upper limit of the number of correct responses of each electronic tag is 24, but the actual situation is consideredIn this case, the number of correct responses of the electronic tag cannot reach the upper limit value, and therefore, it is possible to set that the electronic tag is determined to be good when the number of correct responses of a certain electronic tag exceeds 15, the electronic tag is determined to be defective when the number of correct responses of a certain electronic tag is between 10 and 15, and the electronic tag is determined to be defective when the number of correct responses of a certain electronic tag is less than or equal to 5.
By using the quality grade testing method of the electronic tag, the matching test can be performed on the size of the radio frequency antenna and the moving speed of the electronic tag.
Specifically, a plurality of electronic tags are placed on the electronic tag placing table 13, and preferably, the plurality of electronic tags are all placed in the area a, and the antenna surfaces of the electronic tags face upward. Then, test parameters are set, for example, the distance between the electronic tag placing table 13 and the radio frequency antenna support plate 14 is 1000 mm, the quality inspection time Tqc of the electronic tag is set to 2400 milliseconds, and then the radio frequency antenna is selected to rotate in the first operation mode or the second operation mode. Meanwhile, the quality grade of each electronic tag is set, namely the correct response times exceed 15 times within the quality inspection time, the electronic tag is judged to be superior, the correct response times are 10 to 15 times and judged to be qualified, and the correct response times are less than or equal to 5 times and judged to be unqualified.
After the test is started, the radio frequency antenna rotates around the axis of the radio frequency antenna, the edge line of the area A of the electronic tag placing table 13 is aligned with the edge line of the radio frequency antenna, and the electronic tag placing table 13 moves at a relative speed VrelativeAnd moving along the horizontal direction, and starting the reader and sending a signal to the electronic tag. Then, the testing device will automatically record the correct response times of each label in the label quality inspection time, i.e. the times of the electronic label being correctly read, and respectively record the times as N [ i [ ]](i 1, 2.., n), where n is the number of electronic tags to be tested.
Finally, the quality grade of each electronic tag can be determined according to the correct response times of each electronic tag. Preferably, the quality rating of each electronic label is displayed in a display, for example in each respective window. Furthermore, the data of the test result can be uploaded to a server or transmitted to the monitoring equipment of the production line through a network, so that the production workshop can guide the layout of the radio frequency antenna according to the data or adjust the parameters of the production line.
Further, if a qualified product or an unqualified product appears in the plurality of electronic tags, that is, not all the electronic tags are good, parameters of the radio frequency system are adjusted, for example, the size of the radio frequency antenna, the rotation speed of the radio frequency antenna, the moving speed of the electronic tag, the vertical distance between the radio frequency antenna and the electronic tag, and the like are adjusted. Of course, due to the limitation of the existing equipment conditions of the production line, if the size and the rotation speed of the radio frequency antenna cannot be adjusted, the moving speed of the electronic tag needs to be adjusted, and if the moving speed of the electronic tag cannot be adjusted, the size and the rotation speed of the radio frequency antenna need to be adjusted.
Wherein, adjust the rotation of radio frequency antenna and can be the slew velocity of adjusting the radio frequency antenna rotation in-process, the turned angle of rotation each time, stall time, like this, when electronic tags is bound at the object of placing at random, when these electronic tags pass through the below of radio frequency antenna, the antenna of each electronic tags all can be unanimous or tend to unanimous with the polarization direction of radio frequency antenna to make electronic tags can be correctly read. For example, in the first rotation mode of the radio frequency antenna with a lobe width of 45 °, since the angle of rotation of the radio frequency antenna is 45 ° each time, there is always a case where the polarization directions of the antenna of the electronic tag and the radio frequency antenna are consistent or tend to be consistent in one rotation period.
When the moving speed of the electronic tag is adjusted, the covering time required for the wireless radio frequency antenna to read the data of the electronic tag needs to be calculated, and the moving speed of the electronic tag is adjusted on the basis that the passing time of the electronic tag in the reading range of the wireless radio frequency antenna is not less than the covering time, wherein the passing time is the time when the electronic tag flows in the reading range of the wireless radio frequency antenna, namely the time from the time when the electronic tag enters the reading range of the wireless radio frequency antenna to the time when the electronic tag leaves the reading range of the wireless radio frequency antenna.
In addition, the embodiment can also test the anti-interference capability of the wireless radio frequency system. Referring to fig. 8, when the tamper resistance test is performed, step S81 is first executed to place a plurality of electronic tags in the tamper resistant area of electronic tag placement table 13, for example, in zone C, with the antenna of each electronic tag facing upward. Then, step S82 is executed to determine the rotation mode of the rf antenna, such as the first operation mode or the second operation mode, and then step S83 is executed to enable the reader/writer to transmit a signal to the electronic tag through the rf antenna, such as a signal for reading the data of the electronic tag. Next, step S84 is executed, and the testing device automatically records the number of times each facing label is correctly read within the label quality inspection time, which is called the interference data identification number.
Then, step S85 is executed to determine whether the number of times of identification of the interference data of each electronic tag exceeds an interference number threshold, for example, in this embodiment, the interference number threshold is 1 time, that is, as long as the radio frequency antenna reads data responded by a certain electronic tag 1 time, it is determined that the electronic tag interferes with the operation of the radio frequency system. Preferably, the testing device records the number of times each electronic tag is correctly read, and if the number of times any electronic tag is correctly read does not exceed 1, it is determined that the radio frequency antenna is not interfered by the electronic tag placed in the C area, otherwise, as long as the number of times any electronic tag is correctly read exceeds 1, step S86 is executed to prompt that the interference-resistant area needs to be adjusted, for example, the length of the inner edge of the interference-resistant area is increased, or the size of the radio frequency antenna is reduced.
Actually, when the interference capability is tested, the interference capability and the quality level of the electronic tags can be used for realizing, that is, the quality level of each electronic tag placed in the C area is calculated, if any electronic tag is determined to be superior, qualified or unqualified, the interference of the radio frequency antenna on the electronic tag in the C area is represented, and if all the electronic tags placed in the C area do not respond correctly, the radio frequency antenna is considered not to be interfered by the electronic tag in the C area.
In addition, the embodiment may also initialize the electronic tag, that is, write initialization data into the electronic tag. Referring to fig. 9, if a single electronic tag is initialized, step S91 is first performed to place a tag in the area a of the electronic tag placing table 13, step S92 is performed to determine the rotation mode of the rf antenna, for example, the first operation mode or the second operation mode is performed, and step S93 is then performed to transmit a signal, for example, a signal for writing data to the electronic tag, to the electronic tag through the rf antenna. Such as write ID code 2021030600000000. Preferably, the distance between the electronic tag placing table 13 and the radio frequency antenna support plate 14 is set to 500 mm during initialization.
In step S93, the ID code 2021030600000000 is written by using the cyclic EPC writing method for 2 electronic tag quality inspection times, i.e., 4800 msec, until the writing is successful. Of course, step S94 needs to be executed to determine whether the data is successfully written, specifically, send a signal of a read signal to the electronic tag, and determine whether the data returned by the electronic tag is the data that has just been written, if so, the data is considered to be successfully written, otherwise, the data is considered to be failed to be written.
If the data writing fails, step S95 is executed, and a prompt is required, for example, a box pop prompt "electronic tag cannot be written, and electronic tag retry is changed". If the data writing is successful, prompt information of the successful data writing can be displayed on the display, and the data writing is carried out on the next electronic tag.
Of course, the present embodiment may also perform data writing on multiple electronic tags at the same time, that is, initialize the multiple electronic tags at the same time, for example, initialize the 12 electronic tags at the same time. Referring to fig. 10, step S101 is first executed to place a plurality of tags in the area a of the electronic tag placement table 13, step S102 is executed to determine a rotation manner of the radio frequency antenna, for example, to operate in the first operation manner or the second operation manner, and then step S103 is executed to start a data reading process for the electronic tags by the reader/writer, for example, within 4800 milliseconds, to read the TID codes of the electronic tags, which are unique identification codes for each electronic tag set by the electronic tag manufacturer, and are recorded as TID [ i ] (i is TID 0, 1. If the number of the read TID codes is equal to the number of the electronic tags to be written within 4800 milliseconds, step S104 is executed, otherwise, a prompt message is sent, for example, a sentence of "the current batch of tags cannot be completely read, please take away a part of tags or change a batch of tags" is displayed through a dialog window.
In step S104, the process of initializing the i (i ═ 0, 1., 11) th electronic tag is as follows: and in 4800 ms, the reader circularly calls a TID [ i ] filtering writing process to write the EPC, and writes a unique ID code into the EPC of the electronic tag corresponding to the TID [ i ] until the ID code of the electronic tag is successfully written. Of course, if the ID code cannot be written into the electronic tag within 4800 ms, it is recorded that the electronic tag has not successfully written the ID code.
Then, step S105 is executed to determine whether all the electronic tags successfully write data, if so, the operation of the radio frequency antenna is stopped, the data writing process of the reader is ended, and a prompt message indicating that all the electronic tags successfully write data is displayed. If the data is not successfully written into the electronic tag, step S106 is executed to search and mark the electronic tag in which the data is not correctly written.
Therefore, the method can simulate the actual running condition of the production line, such as the fact that the electronic tag is bound on an article and moves at a certain speed, and can calculate the times of correct response of each electronic tag so as to judge whether the wireless radio frequency system needs to be adjusted, such as the size, the rotating speed, the moving speed of the electronic tag, the distance between the electronic tag and the wireless radio frequency antenna and the like of the wireless radio frequency antenna on the production line. Once the identification rate of the electronic tag is reduced, the testing method can be used for adaptively adjusting each parameter so as to ensure that the identification rate of the electronic tag meets the set requirement.
The testing device of the radio frequency system used in the embodiment can detect a plurality of quality parameters such as the reading and writing distance, the reading and writing sensitivity and the like of the electronic tag, and can also detect an anti-interference area which causes interference to an adjacent radio frequency system, namely, detect whether the electronic tag in the interference area can cause interference to the radio frequency antenna. In addition, the testing device can also initialize a plurality of electronic tags efficiently, namely, the electronic tags are assigned with unique ID codes, so that the products or components can be bound with the electronic tags conveniently.
Compared with the traditional testing device of the wireless radio frequency system, the wireless radio frequency testing system used in the embodiment has low production cost, can test the wireless radio frequency system without special testing equipment of the wireless radio frequency system and a shielding room environment, is very convenient to install, only needs to be deployed at a certain station of a workshop or in an office of production management, and occupies a small area. In addition, the operation and use of the testing device are very simple, and special training operation is not required.
The embodiment of the computer device comprises:
the computer device of this embodiment is a device for testing a radio frequency system, and the computer device includes a radio frequency module, a processor, a memory, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the computer device implements the steps of the method for testing a radio frequency system.
For example, a computer program may be partitioned into one or more modules that are stored in a memory and executed by a processor to implement the modules of the present invention. One or more of the modules may be a series of computer program instruction segments capable of performing certain functions, which are used to describe the execution of the computer program in the terminal device.
The Processor may be a Central Processing Unit (CPU), or may be other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the terminal device and connecting the various parts of the entire terminal device using various interfaces and lines.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the terminal device by running or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory.
Computer-readable storage medium embodiments:
the computer program stored in the computer device may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, all or part of the flow in the method according to the above embodiments may be implemented by a computer program, which may be stored in a computer readable storage medium and used by a processor to implement the steps of the smart card writing method.
Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, such as the change of the rotation mode of the radio frequency antenna, or the change of the tested parameters, and the like, and the changes should be included in the protection scope of the claims.
Claims (10)
1. The test method of the wireless radio frequency system comprises the following steps:
the method comprises the steps that communication is carried out between the wireless radio frequency antenna and at least one electronic tag, and the wireless radio frequency antenna rotates along the axis of the wireless radio frequency antenna at a preset rotating speed;
the method is characterized in that:
the electronic tag moves at a preset speed relative to the wireless radio frequency antenna, and the wireless radio frequency antenna is consistent with or tends to be consistent with the polarization direction of the antenna of the electronic tag at least once in a rotation period;
calculating the correct response times of the electronic tag forming correct communication data in a test time period, judging whether the correct response times of the electronic tag meet preset requirements, and if not, adjusting at least one of the following parameters: the radio frequency identification device comprises a wireless radio frequency antenna, an electronic tag, an antenna, a wireless radio frequency antenna and a wireless radio frequency antenna, wherein the wireless radio frequency antenna is arranged on the electronic tag, and the wireless radio frequency antenna is arranged on the electronic tag.
2. The method of claim 1, wherein:
the wireless radio frequency antenna rotates along the axis of the wireless radio frequency antenna at a preset rotating speed and comprises: stopping the wireless radio frequency antenna for a preset time after the wireless radio frequency antenna rotates for a preset angle at a preset rotating speed;
adjusting the rotation parameters of the radio frequency antenna comprises: and adjusting the preset rotating speed, the preset angle and the preset time length.
3. The method of claim 1, wherein:
and if the correct response times of the electronic tag are confirmed not to meet the preset requirements, the moving speed of the electronic tag is not adjusted, and the area of the wireless radio frequency antenna is adjusted.
4. The method of claim 1, wherein:
and if the correct response times of the electronic tag are confirmed not to meet the preset requirements, the area of the wireless radio frequency antenna is not adjusted, and the moving speed of the electronic tag is adjusted.
5. The method for testing a radio frequency system according to any one of claims 1 to 4, wherein:
judging whether the correct response times of the electronic tag meet preset requirements or not comprises the following steps: and calculating whether the correct response times of the electronic tag exceed a preset correct response time threshold value.
6. The method for testing a radio frequency system according to any one of claims 1 to 4, wherein:
the adjusting of the moving speed of the electronic tag comprises: and calculating the coverage time required by the radio frequency antenna for reading the data of the electronic tag, and adjusting the moving speed of the electronic tag by taking the passing time of the electronic tag in the reading range of the radio frequency antenna not less than the coverage time as a reference.
7. The method for testing a radio frequency system according to any one of claims 1 to 4, wherein:
the method further comprises the following steps: and acquiring TID codes of a plurality of electronic tags, and writing a unique ID code into the electronic tag corresponding to the TID code according to the acquired TID codes.
8. The method for testing a radio frequency system according to any one of claims 1 to 4, wherein:
the method further comprises the following steps: and placing at least one electronic tag in an anti-interference area, calculating the identification times of the electronic tag interference data forming correct communication data in a test time period, and if the identification times of the electronic tag interference data exceed a preset interference time threshold, adjusting the anti-interference area.
9. The method for testing a radio frequency system according to any one of claims 1 to 4, wherein:
the number of the electronic tags is more than two;
the method further comprises the following steps: and calculating the correct response times of the electronic tag of each electronic tag in the test time period, and determining the quality grade of the electronic tag according to the correct response times of the electronic tag.
10. Computer arrangement, characterized in that it comprises a radio frequency module, a processor and a memory, said memory having stored thereon a computer program which, when executed by said processor, carries out the steps of the method for testing a radio frequency system according to any of claims 1 to 9.
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|---|---|---|---|---|
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050150102A1 (en) * | 2004-01-13 | 2005-07-14 | Bosco Edward M. | System and method for validating radio frequency identification tags |
| US20060049250A1 (en) * | 2004-09-09 | 2006-03-09 | Sullivan Michael S | RFID system performance monitoring |
| CN101750547A (en) * | 2009-07-08 | 2010-06-23 | 中国科学院自动化研究所 | Measuring system and measuring method for power contour of reader-writer antenna |
| CN101782608A (en) * | 2009-11-11 | 2010-07-21 | 中国科学院自动化研究所 | Radio frequency identification device (RFID) label response frequency standard test system and method |
| CN101782959A (en) * | 2009-12-16 | 2010-07-21 | 中国科学院自动化研究所 | Test system and method for radio-frequency application system performance of high-speed motion electronic tag |
| CN102445584A (en) * | 2011-09-22 | 2012-05-09 | 中国科学院自动化研究所 | System and method for testing working voltage of electronic tag |
| CN103279774A (en) * | 2013-04-17 | 2013-09-04 | 中国科学院自动化研究所 | System and method for detecting performance of mobile electronic tags |
| US20170219700A1 (en) * | 2014-10-23 | 2017-08-03 | Automaton, Inc. | Systems and methods for rfid tag locating using constructive interference |
-
2021
- 2021-06-04 CN CN202110627635.4A patent/CN113447729B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050150102A1 (en) * | 2004-01-13 | 2005-07-14 | Bosco Edward M. | System and method for validating radio frequency identification tags |
| US20060049250A1 (en) * | 2004-09-09 | 2006-03-09 | Sullivan Michael S | RFID system performance monitoring |
| CN101750547A (en) * | 2009-07-08 | 2010-06-23 | 中国科学院自动化研究所 | Measuring system and measuring method for power contour of reader-writer antenna |
| CN101782608A (en) * | 2009-11-11 | 2010-07-21 | 中国科学院自动化研究所 | Radio frequency identification device (RFID) label response frequency standard test system and method |
| CN101782959A (en) * | 2009-12-16 | 2010-07-21 | 中国科学院自动化研究所 | Test system and method for radio-frequency application system performance of high-speed motion electronic tag |
| CN102445584A (en) * | 2011-09-22 | 2012-05-09 | 中国科学院自动化研究所 | System and method for testing working voltage of electronic tag |
| CN103279774A (en) * | 2013-04-17 | 2013-09-04 | 中国科学院自动化研究所 | System and method for detecting performance of mobile electronic tags |
| US20170219700A1 (en) * | 2014-10-23 | 2017-08-03 | Automaton, Inc. | Systems and methods for rfid tag locating using constructive interference |
Non-Patent Citations (1)
| Title |
|---|
| 田志礼等: "电子标签在物流***中的应用设计", 《商场现代化》, 1 December 2006 (2006-12-01) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117474026A (en) * | 2023-12-28 | 2024-01-30 | 深圳汉德物联科技有限公司 | RFID handheld device data intelligent processing method |
| CN117474026B (en) * | 2023-12-28 | 2024-03-29 | 深圳汉德物联科技有限公司 | RFID handheld device data intelligent processing method |
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