CN103487676A - Method and device used for testing performance of RFID electronic tag - Google Patents
Method and device used for testing performance of RFID electronic tag Download PDFInfo
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Abstract
The invention provides a method and device used for testing the performance of an RFID electronic tag. The testing method comprises the following steps that (1) an activation signal is sent to the electronic tag at the testing distance S, a replying signal fed back by the electronic tag is received, and the distinguish data about the performance of the electronic tag are obtained; (2) the distinguish data are compared with the reference data used for determining the performance of the electronic tag; (3) the performance of the electronic tag is determined according to the comparison result of the distinguish data and the preset data. By means of the method and device used for testing the performance of the RFID electronic tag, the performance of the electronic tag can be tested, the performance of the electronic tag can be accurately judged, management loopholes caused when the information of the electronic tag installed on a car can not be read are prevented, and the testing method is simple and efficient.
Description
Technical field
The present invention relates to a kind of method of testing, relate in particular to a kind of method and device thereof of testing RFID electronic tag performance.
Background technology
At intelligent transportation field, the collection that utilizes intelligent wireless radio frequency identification (RFID) technology to carry out transport information is found broad application, its basic principle of work is: the electronic tag (radio-frequency card) formed after relevant traffic management informations such as utilizing passive label input vehicle and driver is installed on vehicle, then the road surface point of arranging is in advance installed read write line at each, read write line generates electromagnetic signal and launches to passive electronic label with certain power by the read-write antenna, the label antenna of passive electronic label receives this signal and is activated, after electronic tag (radio-frequency card) is activated, the information of vehicles stored in radio-frequency card is fed back to read write line in the mode of electromagnetic signal, thereby read write line obtains information of vehicles by processing procedures such as demodulation, due to electronic tag when dispatching from the factory, may there be flaw in the performance of the label of different batches, after electronic tag is installed in vehicle, often occur extruding, the factor such as folding in installation process, easily cause radio-frequency card to damage, and at present, also there is no the method that can carry out quality testing to the electronic tag after installing, therefore, easily cause information of vehicles to be identified, administrative vulnerability easily occurs.
In view of this, need to propose a kind of method and device that the performance of the electronic tag after installing is detected, can the performance of electronic tag be detected, and accurately judge the performance of electronic tag, the information that prevents from being arranged on the electronic tag on vehicle can't read and the administrative vulnerability that occurs, and method of testing is simply efficient.
Summary of the invention
In view of this, method and the device of a kind of testing RFID electronic tag performance that the present invention proposes, can the performance of electronic tag be detected, and accurately judge the performance of electronic tag, the information that prevents from being arranged on the electronic tag on vehicle can't read and the administrative vulnerability that occurs, and method of testing is simply efficient.
The method of a kind of testing RFID electronic tag performance disclosed by the invention, described detection method comprises the steps:
A. launch activation signal at measuring distance S to electronic tag, and receive the answer signal of electronic tag feedback and obtain the differentiation data of electronic tag performance;
B. will differentiate data and preset compare for the reference data of determining the electronic tag performance;
C. determine the performance of electronic tag according to the comparative result of differentiating data and initialize data;
Further, in step a, described differentiation data are included in the successful receiving rate of answer signal of different distance and the energy value of answer signal;
Further, in step b, described reference data is included in the successful receiving rate basic parameter of answer signal of different distance and the energy value basic parameter of answer signal;
Further, in step c, determine that the performance of electronic tag comprises:
The successful receiving rate of the answer signal that C1. comparative result in step b is current distance S is higher than the success ratio basic parameter, and the energy value of answer signal, higher than the energy value basic parameter, determines that the performance of RFID electronic tag is normal;
The successful receiving rate of the answer signal that C2. comparative result in step b is current distance S is higher than the success ratio basic parameter, the energy value of answer signal is lower than the energy value basic parameter, the performance of determining the RFID electronic tag is normal, but answer signal is subject to external interference.
The successful receiving rate of the answer signal that C3. comparative result in step b is current distance S is lower than the success ratio basic parameter, the energy value of answer signal is higher than the energy value basic parameter, the performance of determining the RFID electronic tag is normal, but activation signal is subject to external interference.
The successful receiving rate of the answer signal that C4. comparative result in step b is current distance S is lower than the success ratio basic parameter, the energy value of answer signal is lower than the energy value basic parameter, adjust the distance of test point and tested radio-frequency card, return to step a and continue test;
Further; step C4 further comprises: the successful receiving rate of the answer signal that the comparative result in step b is current distance S is lower than the success ratio basic parameter; the energy value of answer signal is lower than the energy value basic parameter; in the distance of adjusting test point and tested electronic tag; return when step a continues test the number of times that returns to step a is added up; when the number of times that returns to step a is added to prevalue N, the performance of determining the RFID electronic tag is abnormal or damages.
The device of a kind of testing RFID electronic tag performance provided by the invention comprises:
The radiofrequency signal Transmit-Receive Unit, for sending activation signal and the answer signal of RFID electronic tag being received to tested RFID electronic tag; Central processing module, calculated for the answer signal of received RF signal Transmit-Receive Unit output the successful receiving rate and the energy value that are received answer signal, and compared and export comparative result according to success ratio basic parameter and the energy value basic parameter of result of calculation and preset answer signal;
Further, described central processing module comprises:
The success ratio computing unit, be electrically connected to described radiofrequency signal Transmit-Receive Unit, for calculating success ratio the output that receives answer signal;
Answer signal energy value measuring unit, be electrically connected to described radiofrequency signal transmitting-receiving power supply, for energy value the output of calculating answer signal;
Central processing unit, be electrically connected to and preset success ratio basic parameter and the energy value basic parameter of answer signal with described success ratio computing unit and answer signal energy value test cell, for the energy value that receives the successful receiving rate of answer signal and answer signal and compare with preset success ratio basic parameter and energy value basic parameter, and the output comparative result;
Further, described central processing module also comprises the counter of being counted with the number of times for to returning to step a be electrically connected to of described central processing unit, when counter is added to while being more than or equal to prevalue N, the totalizer zero clearing is also to CPU (central processing unit) output reset signal;
Further, also comprise for measuring the range sensor of current measuring distance S, described range sensor is electrically connected to and exports distance signal to central processing unit with described central processing unit;
Further, also comprise the display unit be electrically connected to described central processing unit, shown for the parameter to testing RFID electronic tag performance.Beneficial effect of the present invention: by method and the device of testing RFID electronic tag performance disclosed by the invention, can the performance of electronic tag be detected, and accurately judge the performance of electronic tag, the information that prevents from being arranged on the electronic tag on vehicle can't read and the administrative vulnerability that occurs, and method of testing is simply efficient; Corresponding proving installation provided by the present invention, be easy to carry, and uses flexibly, hand-holdablely carries out test job to detection position, saved human cost.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the process flow diagram of the method for test electronic tag performance.
Fig. 2 is the structural representation of the device of test electronic tag performance.
Embodiment
Fig. 1 is the process flow diagram of the method for test electronic tag performance, and Fig. 2 is the structural representation of the device of test electronic tag performance, as shown in the figure, the method for a kind of testing RFID electronic tag performance disclosed by the invention, described detection method comprises the steps:
A. launch activation signal at measuring distance S to electronic tag, and receive the answer signal of electronic tag feedback and obtain the differentiation data of electronic tag performance; Wherein, measuring distance S is the distance between test point and tested electronic tag, and measuring distance S can need to be adjusted according to test;
B. will differentiate data and preset compare for the reference data of determining the electronic tag performance;
C. determine the performance of electronic tag according to the comparative result of differentiating data and initialize data;
In the present embodiment, in step a, described differentiation data are included in the successful receiving rate of answer signal of different distance and the energy value of answer signal; Wherein, the success ratio that receives answer signal refers to the total degree and the ratio that sends the activation signal total degree that receives answer signal in interval at one time; The energy value of answer signal refers to the energy value at the answer signal at current measuring distance S place.
In the present embodiment, in step b, described reference data is included in the successful receiving rate basic parameter of answer signal of different distance and the energy value basic parameter of answer signal; Wherein, the factor that should be taken into account external interference when arranging of successful receiving rate basic parameter, because the annoyance level that the test environment of different distance is suffered is different, the performance of label is subject to the impact of distance factor; Therefore, according to different distance, described success ratio basic parameter arranges respectively because distance is different with the energy value basic parameter.For example, in the present embodiment, choose the 3m scope and tested, the successful receiving rate basic parameter should be not less than 70% of the total emitting times of activation signal; The energy value basic parameter of answer signal should be taken into account the factor due to electromagnetic signal decay in transmittance process, external interference and measuring distance when arranging, such as, when dispatching from the factory, electronic tag set the emissive power after label is activated, therefore, energy value at electronic tag emission answer signal is determined, the energy value when basic parameter of answer signal should be less than electronic tag emission answer signal when arranging so.
In the present embodiment, in step c, determine that the performance of electronic tag comprises:
The successful receiving rate of the answer signal that C1. comparative result in step b is current distance S is higher than the success ratio basic parameter, and the energy value of answer signal, higher than the energy value basic parameter, determines that the performance of RFID electronic tag is normal;
The successful receiving rate of the answer signal that C2. comparative result in step b is current distance S is higher than the success ratio basic parameter, the energy value of answer signal is lower than the energy value basic parameter, the performance of determining the RFID electronic tag is normal, but answer signal is subject to external interference, due to successful receiving rate higher than the success ratio basic parameter, can illustrate that activation signal can be activated electronic tag effectively, and electronic tag can normal response under the effect of activation signal, thereby answer signal is decayed under extraneous interference, the excessive answer signal energy value that causes is lower than the energy value basic parameter,
The successful receiving rate of the answer signal that C3. comparative result in step b is current distance S is lower than the success ratio basic parameter, the energy value of answer signal is higher than the energy value basic parameter, the performance of determining the RFID electronic tag is normal, but activation signal is subject to external interference, receive external interference owing to activating For haven's sake, the activation signal that is not each emission can both the active electron label, once but activation signal can the active electron label, answer signal be not interfered can value all can be higher than the energy value basic parameter, therefore, cause successful receiving rate lower than the success ratio basic parameter,
The successful receiving rate of the answer signal that C4. comparative result in step b is current distance S is lower than the success ratio basic parameter, the energy value of answer signal is lower than the energy value basic parameter, adjust the distance of test point and tested electronic tag, return to step a and continue test, adjustment apart from the time, be generally the distance that shortens test point and tested electronic tag, step C4 further comprises: the successful receiving rate of the answer signal that the comparative result in step b is current distance S is lower than the success ratio basic parameter, the energy value of answer signal is lower than the energy value basic parameter, in the distance of adjusting test point and tested radio-frequency card, return when step a continues test the number of times that returns to step a is added up, the number of times that returns to step a is added up by counter, when the number of times that returns to step a is added to prevalue N, the performance of determining the RFID electronic tag is abnormal or damages, wherein, the setting of the prevalue N of cumulative number, can set according to site testing data.
Correspondingly, the device of a kind of testing RFID electronic tag performance provided by the invention comprises:
The radiofrequency signal Transmit-Receive Unit, for sending activation signal and the answer signal of RFID electronic tag being received to tested RFID electronic tag;
Central processing module, for the answer signal of received RF signal Transmit-Receive Unit output the successful receiving rate and the energy value that are received answer signal, calculated, and compare and export comparative result according to success ratio basic parameter and the energy value basic parameter of result of calculation and preset answer signal, determine the performance of electronic tag by comparative result.
In the present embodiment, described central processing module comprises:
The success ratio computing unit, with described radiofrequency signal Transmit-Receive Unit, be electrically connected to, for calculating success ratio the output that receives answer signal, described success ratio computing unit carries out statistical computation by the reception total degree of the emission total degree to activation signal and answer signal, and the ratio of the total degree of the reception total degree of answer signal and activation signal emission is exported as the success ratio signal;
Answer signal energy value measuring unit, with described radiofrequency signal transmitting-receiving power supply, be electrically connected to, for energy value the output of calculating answer signal, the energy value signal is measured and exported to the energy value of the answer signal that answer signal energy value measuring unit receives current measuring distance S place;
Central processing unit, be electrically connected to and preset success ratio basic parameter and the energy value basic parameter of answer signal with described success ratio computing unit and answer signal energy value test cell, for the energy value that receives the successful receiving rate of answer signal and answer signal and compare with preset success ratio basic parameter and energy value basic parameter, and the output comparative result.
In the present embodiment, described central processing module also comprises the counter of being counted with the number of times for to returning to step a be electrically connected to of described central processing unit, and the number of times that counter will return to step a is sent to central processing unit, central processing unit compares current accumulative frequency and prevalue N, when the counter accumulative frequency is more than or equal to prevalue N, central processing unit sends clear command and makes counter O reset to counter, the result of determination of now central processing unit output electronic tag performance also judges that the performance of electronic tag is abnormal or damage, when the counting accumulated value of counter is less than prevalue N, adjust the distance of current test point and tested electronic tag, test again, and the technology of counter adds 1.
In the present embodiment, also comprise for measuring the range sensor of current measuring distance S, described range sensor is electrically connected to and exports distance signal to central processing unit with described central processing unit, distance signal is tested and exported to range sensor to the distance of current detection point and tested electronic tag, when needs are readjusted measuring distance, distance signal is measured and exported to the distance of range sensor after adjusting to central processing unit.In the present embodiment, also comprise the display unit be electrically connected to described central processing unit, shown for the parameter to testing RFID electronic tag performance, be convenient to that the tester observes intuitively and the drawing of conclusion; This proving installation also be provided with power supply unit and storage unit, power supply unit can adopt accumulator, also can adopt by civil power and be converted to powered by direct current, but, for the ease of carrying and moving, the general storage battery power supply that adopts, storage unit records and puts on record the parameter in test process.Certainly, this device also can arrange the keyboard (not marking in figure) be connected with described central processing unit, and described keyboard, at test environment, described success ratio basic parameter and energy value basic parameter being arranged, is convenient to input and the change of instruction.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. the method for a testing RFID electronic tag performance, it is characterized in that: described detection method comprises the steps:
A. launch activation signal at measuring distance S to electronic tag, and receive the answer signal of electronic tag feedback and obtain the differentiation data of electronic tag performance;
B. will differentiate data and preset compare for the reference data of determining the electronic tag performance;
C. determine the performance of electronic tag according to the comparative result of differentiating data and initialize data.
2. the method for testing RFID electronic tag performance according to claim 1 is characterized in that: in step a, described differentiation data are included in the successful receiving rate of answer signal of different distance and the energy value of answer signal.
3. the method for testing RFID electronic tag performance according to claim 2 is characterized in that: in step b, described reference data is included in the successful receiving rate basic parameter of answer signal of different distance and the energy value basic parameter of answer signal.
4. the method for testing RFID electronic tag performance according to claim 3 is characterized in that: in step c, determine that the performance of electronic tag comprises:
The successful receiving rate of the answer signal that C1. comparative result in step b is current distance S is higher than the success ratio basic parameter, and the energy value of answer signal, higher than the energy value basic parameter, determines that the performance of RFID electronic tag is normal;
The successful receiving rate of the answer signal that C2. comparative result in step b is current distance S is higher than the success ratio basic parameter, the energy value of answer signal is lower than the energy value basic parameter, the performance of determining the RFID electronic tag is normal, but answer signal is subject to external interference.
The successful receiving rate of the answer signal that C3. comparative result in step b is current distance S is lower than the success ratio basic parameter, the energy value of answer signal is higher than the energy value basic parameter, the performance of determining the RFID electronic tag is normal, but activation signal is subject to external interference.
The successful receiving rate of the answer signal that C4. comparative result in step b is current distance S is lower than the success ratio basic parameter, the energy value of answer signal is lower than the energy value basic parameter, adjust the distance of test point and tested radio-frequency card, return to step a and continue test.
5. the method for testing RFID electronic tag performance according to claim 4; it is characterized in that: step C4 further comprises: the successful receiving rate of the answer signal that the comparative result in step b is current distance S is lower than the success ratio basic parameter; the energy value of answer signal is lower than the energy value basic parameter; in the distance of adjusting test point and tested electronic tag; return when step a continues test the number of times that returns to step a is added up; when the number of times that returns to step a is added to prevalue N, the performance of determining the RFID electronic tag is abnormal or damages.
6. the device of a testing RFID electronic tag performance is characterized in that: comprising:
The radiofrequency signal Transmit-Receive Unit, for sending activation signal and the answer signal of RFID electronic tag being received to tested RFID electronic tag;
Central processing module, calculated for the answer signal of received RF signal Transmit-Receive Unit output the successful receiving rate and the energy value that are received answer signal, and compared and export comparative result according to success ratio basic parameter and the energy value basic parameter of result of calculation and preset answer signal.
7. the device of testing RFID electronic tag performance according to claim 6, it is characterized in that: described central processing module comprises:
The success ratio computing unit, be electrically connected to described radiofrequency signal Transmit-Receive Unit, for calculating success ratio the output that receives answer signal;
Answer signal energy value measuring unit, be electrically connected to described radiofrequency signal transmitting-receiving power supply, for energy value the output of calculating answer signal;
Central processing unit, be electrically connected to and preset success ratio basic parameter and the energy value basic parameter of answer signal with described success ratio computing unit and answer signal energy value test cell, for the energy value that receives the successful receiving rate of answer signal and answer signal and compare with preset success ratio basic parameter and energy value basic parameter, and the output comparative result.
8. the device of testing RFID electronic tag performance according to claim 7, it is characterized in that: described central processing module also comprises the counter of being counted with the number of times for to returning to step a be electrically connected to of described central processing unit, when counter is added to while being more than or equal to prevalue N, the totalizer zero clearing is also to CPU (central processing unit) output reset signal.
9. the device of testing RFID electronic tag performance according to claim 8, it is characterized in that: also comprise for measuring the range sensor of current measuring distance S, described range sensor is electrically connected to and exports distance signal to central processing unit with described central processing unit.
10. the device of testing RFID electronic tag performance according to claim 9, is characterized in that: also comprise the display unit be electrically connected to described central processing unit, shown for the parameter to testing RFID electronic tag performance.
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