CN109061443B - Electronic tag sensitivity test method for eliminating clamp influence - Google Patents
Electronic tag sensitivity test method for eliminating clamp influence Download PDFInfo
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- CN109061443B CN109061443B CN201810979799.1A CN201810979799A CN109061443B CN 109061443 B CN109061443 B CN 109061443B CN 201810979799 A CN201810979799 A CN 201810979799A CN 109061443 B CN109061443 B CN 109061443B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
- G01R31/2822—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere of microwave or radiofrequency circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses an electronic tag sensitivity test method for eliminating the influence of a clamp, which comprises the steps of placing an electronic tag on the clamp; configuring a radio frequency transmitting unit, and setting a frequency and power scanning interval; obtaining the minimum average power value corresponding to all the frequency points; replacing the electronic tag on the fixture at the same position with a standard receiving antenna with known gain; transmitting signals to a standard receiving antenna on the clamp; after the standard receiving antenna receives the signal, the power of the signal is analyzed by the receiving and analyzing unit, and the gain of the standard receiving antenna is subtracted to obtain the RIP power actually received by the electronic tag, wherein the RIP power is the sensitivity of the electronic tag. The invention uses the standard receiving antenna to replace the tested electronic tag in the clamp, and uses the power received by the standard receiving antenna to calibrate the sensitivity of the electronic tag, thereby eliminating the influence of the clamp on the test result and having high test accuracy.
Description
Technical Field
The invention relates to an electronic tag sensitivity test method for eliminating the influence of a clamp, and belongs to the technical field of electronic measurement.
Background
Along with the rapid development of the internet of things, the current society has also been widely applied to the application of radio frequency identification technology closely related to the internet of things, and the application of radio frequency identification technology is spread throughout various fields, such as: logistics transmission, article identification, internet of vehicles, identity identification and the like.
In order to enable various electronic tags to be rapidly, conveniently and accurately identified in practical application, strict testing is required to be carried out on the electronic tags in the production stage of the electronic tags.
The sensitivity of the electronic tag is an important index reflecting the quality of the tag, and the index has a great relation with the testing environment. In the electronic tag sensitivity test process, the electronic tag needs to be clamped by the clamp, however, the clamp can influence the sensitivity of the electronic tag, and how to eliminate the influence of the clamp is a problem which needs to be solved urgently in the current electronic tag sensitivity test process.
Disclosure of Invention
The invention aims to solve the problems that in the existing electronic tag sensitivity test process, an electronic tag needs to be clamped by a clamp, but the clamp can influence the sensitivity of the electronic tag and influence the test accuracy. According to the method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp, the standard receiving antenna is used for replacing the tested electronic tag in the clamp, and the power received by the standard receiving antenna is used for calibrating the sensitivity of the electronic tag, so that the influence of the clamp on a test result is eliminated, the test accuracy is high, the method is ingenious, the implementation is easy, and the application prospect is good.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a method for testing sensitivity of electronic tag for eliminating influence of clamp comprises the following steps,
step (A), placing the electronic tag on a clamp;
step (B), configuring a radio frequency transmitting unit, and setting a frequency and power scanning interval;
step (C), scanning and testing the electronic tag on the clamp through the configured radio frequency transmitting unit to obtain the minimum average power value corresponding to all frequency points;
step (D), replacing the electronic tag on the clamp at the same position with a standard receiving antenna with known gain;
step (E), the radio frequency transmitting unit transmits signals to the standard receiving antenna on the clamp according to the minimum average power value obtained in the step (C) and the frequency point corresponding to the average power value;
and (F) after the standard receiving antenna receives the signal, analyzing the power of the signal through a receiving and analyzing unit, and subtracting the gain of the standard receiving antenna to obtain the RIP power actually received by the electronic tag, wherein the RIP power is the sensitivity of the electronic tag.
The method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp comprises the following steps of (B) configuring a radio frequency emission unit, setting a frequency and power scanning interval,
(B1) Setting the upper limit, the lower limit and the frequency step of the central frequency of the radio frequency transmitting unit according to the protocol followed by the tested tag electronics to obtain a frequency interval to be tested;
(B2) The sensitivity of the type of electronic tag is predicted, a test interval containing the sensitivity is set, and power stepping of the radio frequency transmitting unit is configured to obtain a power scanning interval to be tested.
The step (C) of the method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp, which is characterized by scanning and testing the electronic tag on the clamp through the configured radio frequency transmitting unit, obtaining the minimum average power value corresponding to all frequency points, comprises the following steps,
(C1) Randomly selecting a certain frequency point in a frequency interval, scanning the power point from bottom to top according to a power scanning interval and power stepping, and recording a first power value at the moment under the frequency point when the response of the electronic tag occurs for the first time; also under the frequency point, scanning the power point from top to bottom according to the power scanning interval and the power stepping, and recording a second power value under the frequency point when the response of the electronic tag occurs for the first time;
(C2) Averaging the first power value and the second power value, wherein the average power value is the sensitivity at the frequency point;
(C3) Selecting the next frequency point upwards or downwards according to the frequency interval and the frequency step, and repeating (C1) - (C2) until all the frequency points in the frequency interval are tested;
(C4) And searching the minimum average power value corresponding to all the frequency points.
According to the method for testing the sensitivity of the electronic tag, which eliminates the influence of the clamp, (B1), the upper limit and the lower limit of the central frequency of the radio frequency transmitting unit are set to 960 MHz-860 MHz according to the protocol followed by the tested tag electronics, and the frequency step is set to 5MHz, so that a frequency interval to be tested is obtained.
In the method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp, (B2), the sensitivity of the electronic tag of the type is predicted, a testing interval containing the sensitivity is set to be-20 dBm-10 dBm, the power of the radio frequency transmitting unit is configured to step by 0.1dBm, and a power scanning interval to be tested is obtained to be 0 dBm-20 dBm.
In the method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp, the radio frequency transmitting unit is a PXIe-7762 radio frequency generator, and the transmitting antenna of the radio frequency generator is an S8658WPR right circularly polarized antenna.
In the foregoing method for testing sensitivity of an electronic tag for eliminating influence of a clamp, the receiving and analyzing unit is a satellite-focusing instrument T39106 radio-frequency transceiver.
According to the electronic tag sensitivity test method for eliminating the influence of the clamp, the standard receiving antenna is a 72001-07 dipole antenna.
The beneficial effects of the invention are as follows: according to the method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp, the standard receiving antenna is used for replacing the tested electronic tag in the clamp, and the power received by the standard receiving antenna is used for calibrating the sensitivity of the electronic tag, so that the influence of the clamp on a test result is eliminated, the test accuracy is high, the method is ingenious, the implementation is easy, and the application prospect is good.
Drawings
FIG. 1 is a flow chart of an electronic label sensitivity test method of the present invention for eliminating clamp effects;
FIG. 2 is a system block diagram of an electronic label sensitivity test system of the present invention that eliminates the effects of clamps.
Detailed Description
The invention will be further described with reference to the drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 1, the electronic tag sensitivity test method for eliminating the influence of the clamp of the present invention includes the steps of,
step (A), placing the electronic tag on a clamp;
step (B) of configuring a radio frequency transmitting unit, setting a frequency and power scanning interval, comprising the following steps,
(B1) Setting the upper limit, the lower limit and the frequency step of the central frequency of the radio frequency transmitting unit according to the protocol followed by the tested tag electronics to obtain a frequency interval to be tested;
(B2) The sensitivity of the type of electronic tag is predicted, a test interval containing the sensitivity is set, and power stepping of a radio frequency transmitting unit is configured to obtain a power scanning interval to be tested;
step (C), scanning and testing the electronic tag on the clamp through the configured radio frequency transmitting unit to obtain the minimum average power value corresponding to all frequency points;
(C1) Randomly selecting a certain frequency point in a frequency interval, scanning the power point from bottom to top according to a power scanning interval and power stepping, and recording a first power value at the moment under the frequency point when the response of the electronic tag occurs for the first time; also under the frequency point, scanning the power point from top to bottom according to the power scanning interval and the power stepping, and recording a second power value under the frequency point when the response of the electronic tag occurs for the first time;
(C2) Averaging the first power value and the second power value, wherein the average power value is the sensitivity at the frequency point;
(C3) Selecting the next frequency point upwards or downwards according to the frequency interval and the frequency step, and repeating (C1) - (C2) until all the frequency points in the frequency interval are tested;
(C4) Searching the minimum average power value corresponding to all the frequency points;
step (D), replacing the electronic tag on the clamp at the same position with a standard receiving antenna with known gain;
step (E), the radio frequency transmitting unit transmits signals to the standard receiving antenna on the clamp according to the minimum average power value obtained in the step (C) and the frequency point corresponding to the average power value;
and (F) after the standard receiving antenna receives the signal, analyzing the power of the signal through the receiving and analyzing unit, and subtracting the gain of the standard receiving antenna to obtain the RIP power actually received by the electronic tag, wherein the RIP power is the power received by the ideal monopole antenna for the radio frequency field intensity of which the tag can just work, and the RIP power is the sensitivity of the electronic tag.
The method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp is realized on a testing system shown in fig. 2, and the specific process is as follows: the clamp is provided with an electronic tag to be tested or a standard receiving antenna;
the radio frequency transmitting unit is used for setting an upper scanning frequency limit, a lower scanning frequency limit, scanning frequency stepping, an upper scanning power limit, a lower scanning power limit and scanning power stepping according to actual conditions; scanning the power from low to high at a certain frequency, recording the power value when the tag just responds, scanning the power from high to low, recording the power when the tag just does not respond, and averaging the two values to obtain the lowest power with response at the frequency; repeating the previous process until all the frequency points are scanned, obtaining the corresponding lowest power with response under each frequency point, taking the minimum value among the lowest powers to obtain nominal sensitivity, and recording the configuration of the radio frequency transmitting unit when the minimum value is obtained; and replacing the electronic tag with a standard receiving antenna, transmitting the same signal by using the configuration which is the same as the configuration of the radio frequency transmitting unit when the minimum value is obtained by using the recorded record, receiving a power by the receiving analysis unit, and subtracting the gain of the standard receiving antenna from the power to obtain the RIP power actually received by the electronic tag, namely the sensitivity of the electronic tag test.
Preferably, the radio frequency transmitting unit is a PXIe-7762 radio frequency generator, and a transmitting antenna of the radio frequency generator is an S8658WPR right circularly polarized antenna.
Preferably, the receiving and analyzing unit is a T39106 radio frequency transceiver.
Preferably, the standard receiving antenna is a 72001-07 dipole antenna.
In order to eliminate the influence of the clamp on the sensitivity test of the electronic tag, the method for testing the sensitivity of the electronic tag provided by the invention proposes to use a standard receiving antenna with known gain to equivalently replace the electronic tag to be tested, uses a radio frequency signal receiving processing unit to analyze the received power of the receiving antenna, and subtracts the known receiving antenna gain to obtain the RIP power actually received by the electronic tag to be tested, namely the sensitivity, and has high testing precision, convenience and reliability.
In summary, the method for testing the sensitivity of the electronic tag for eliminating the influence of the clamp disclosed by the invention uses the standard receiving antenna to replace the tested electronic tag in the clamp, and the power received by the standard receiving antenna is used for calibrating the sensitivity of the electronic tag, so that the influence of the clamp on a test result is eliminated, the test accuracy is high, the method is ingenious, the implementation is easy, and the application prospect is good.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A method for testing the sensitivity of an electronic tag for eliminating the influence of a clamp is characterized by comprising the following steps: comprises the steps of,
step (A), placing the electronic tag on a clamp;
step (B), configuring a radio frequency transmitting unit, and setting a frequency and power scanning interval;
and (C) scanning and testing the electronic tag on the clamp through the configured radio frequency transmitting unit to obtain the minimum average power value corresponding to all frequency points, wherein the method comprises the following steps of:
(C1) Randomly selecting a certain frequency point in a frequency interval, scanning the power point from bottom to top according to a power scanning interval and power stepping, and recording a first power value at the moment under the frequency point when the response of the electronic tag occurs for the first time; also under the frequency point, scanning the power point from top to bottom according to the power scanning interval and the power stepping, and recording a second power value under the frequency point when the electronic tag does not respond;
(C2) Averaging the first power value and the second power value, wherein the average power value is the sensitivity at the frequency point;
(C3) Selecting the next frequency point upwards or downwards according to the frequency interval and the frequency step, and repeating (C1) - (C2) until all the frequency points in the frequency interval are tested;
(C4) Searching the minimum average power value corresponding to all the frequency points;
step (D), replacing the electronic tag on the clamp at the same position with a standard receiving antenna with known gain;
step (E), the radio frequency transmitting unit transmits signals to the standard receiving antenna on the clamp according to the minimum average power value obtained in the step (C) and the frequency point corresponding to the average power value;
and (F) after the standard receiving antenna receives the signal, analyzing the power of the signal through a receiving and analyzing unit, and subtracting the gain of the standard receiving antenna to obtain the RIP power actually received by the electronic tag, wherein the RIP power is the sensitivity of the electronic tag.
2. The method for testing the sensitivity of the electronic tag by eliminating the influence of the clamp according to claim 1, wherein the method comprises the following steps: step (B) of configuring a radio frequency transmitting unit, setting a frequency and power scanning interval, comprising the following steps,
(B1) Setting the upper limit, the lower limit and the frequency step of the central frequency of the radio frequency transmitting unit according to the protocol followed by the tested tag electronics to obtain a frequency interval to be tested;
(B2) The sensitivity of the type of electronic tag is predicted, a test interval containing the sensitivity is set, and power stepping of the radio frequency transmitting unit is configured to obtain a power scanning interval to be tested.
3. The method for testing the sensitivity of the electronic tag by eliminating the influence of the clamp according to claim 2, wherein the method comprises the following steps: (B1) And setting the upper limit and the lower limit of the central frequency of the radio frequency transmitting unit to be 960 MHz-860 MHz and the frequency step to be 5MHz according to the protocol followed by the tested tag electronics, so as to obtain the frequency interval to be tested.
4. The method for testing the sensitivity of the electronic tag by eliminating the influence of the clamp according to claim 2, wherein the method comprises the following steps: (B2) The sensitivity of the electronic tag is predicted, a test interval containing the sensitivity is set to be-20 dBm-10 dBm, and the power of the radio frequency transmitting unit is configured to step by 0.1dBm, so that a power scanning interval to be tested is set to be 0 dBm-20 dBm.
5. The method for testing the sensitivity of the electronic tag by eliminating the influence of the clamp according to claim 1, wherein the method comprises the following steps: the radio frequency transmitting unit is a PXIe-7762 radio frequency generator, and a transmitting antenna of the radio frequency generator is a right circularly polarized antenna.
6. The method for testing the sensitivity of the electronic tag by eliminating the influence of the clamp according to claim 1, wherein the method comprises the following steps: the receiving and analyzing unit is a radio frequency transceiver.
7. The method for testing the sensitivity of the electronic tag by eliminating the influence of the clamp according to claim 1, wherein the method comprises the following steps: the standard receiving antenna is a 72001-07 dipole antenna.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810979799.1A CN109061443B (en) | 2018-08-27 | 2018-08-27 | Electronic tag sensitivity test method for eliminating clamp influence |
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| CN201810979799.1A CN109061443B (en) | 2018-08-27 | 2018-08-27 | Electronic tag sensitivity test method for eliminating clamp influence |
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| CN109061443B true CN109061443B (en) | 2023-06-20 |
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