CN102565582B - Test device of radio frequency identification equipment - Google Patents
Test device of radio frequency identification equipment Download PDFInfo
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- CN102565582B CN102565582B CN201110454192.XA CN201110454192A CN102565582B CN 102565582 B CN102565582 B CN 102565582B CN 201110454192 A CN201110454192 A CN 201110454192A CN 102565582 B CN102565582 B CN 102565582B
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Abstract
The invention provides a test device of radio frequency identification equipment. The test device is characterized by comprising a programmable control unit, and a wireless emission test unit, a wireless receiving test unit, a wired emission test unit and a wired receiving test unit which are respectively connected with the programmable control unit, wherein the wireless emission test unit is used for testing wireless emission parameters of the radio frequency identification equipment; the wireless receiving test unit is used for testing wireless receiving parameters of the radio frequency identification equipment; the wired emission test unit is used for testing wired emission working parameters of the radio frequency identification equipment; and the wired receiving test unit is used for testing wired receiving working parameters of the radio frequency identification equipment. The test device disclosed by the invention can be used for automatically testing the performance of various pieces of radio frequency identification equipment according to a preset test instruction under the control of the programmable control unit, realizes test automation, greatly reduces manual intervention, improves the test efficiency and guarantees the test repeatability.
Description
Technical field
The present invention relates to circuit structure, relate in particular to a kind of proving installation of radio frequency identification equipment.
Background technology
Radio-frequency (RF) identification (Radio Frequency Identification, RFID) technology is a kind of contactless automatic identification technology, its ultimate principle is carry out energy and information taking electromagnetic field as medium mutual, realizes the automatic identification to target object.With other automatic identification technology as compared with bar code, magnetic card, Contact Type Ic Card etc., the plurality of advantages such as that REID has is untouchable, read or write speed is efficient and convenient, memory capacity is large, recognition efficiency is high, security performance is good, has been widely used in logistics, gate inhibition, medical treatment, traffic, the field such as false proof, military.
As shown in Figure 1, existing RFID equipment mainly comprises personal computer (Personal Computer, PC) 101, read write line 102, reading and writing device antenna 103, label chip 104 and the large assembly of label antenna 105 5.Wherein, read write line is a typical transceiver system, and the single antenna mode that can adopt the double antenna mode of transmitting-receiving separation or adopt transmitting-receiving to merge is worked, and carries out Energy Transfer and exchanges data with label.Conventionally, label chip and label antenna composition label, label chip is the data carrier of RFID equipment, can storing commodity or the essential information of object.Enter within the scope of the work place of reading and writing device antenna when being attached with the object of label, read write line and label are realized data interaction between the two by the mode of electric field or magnetic Field Coupling.
According to the frequency of operation difference of RFID equipment, can be divided into low frequency (Low Frequency, LF), high frequency (High Frequency, HF), ultrahigh frequency (Ultra High Frequency, and four frequency ranges such as microwave (Microwave, MW) UHF).Frequency range difference, operating characteristic is also different.Conventionally, the ultimate principle of the RFID equipment of low frequency and high frequency based on inductive coupling, its communication distance is shorter; The RFID equipment of ultrahigh frequency and microwave frequency band is based on the backscattered ultimate principle of electromagnetic coupled, and its communication distance is longer; The RFID equipment of ultrahigh frequency is owing to having compared with decipherment distance far away, traffic rate and being used widely compared with little antenna size faster.
The equipment putting into effect before coming into operation, RFID equipment (as label, read write line) all needs it to test, so that can normally use.The test of RFID equipment comprises that read write line is tested and label is tested two kinds.Wherein, read write line is tested the performance that transmits and receives of general measure read write line; And the performance of test label and antenna thereof is not only wanted in label test, also want the performance of single label chip in test label.Therefore, how to improve measuring accuracy, testing efficiency and ensure that the repeatability of test becomes the very crucial technology of current detection radio frequency identification equipment.
Proving installation of the prior art utilizes robotization control software and testing apparatus to realize the automatic test to radio frequency identification equipment mostly.But, test target (as a certain running parameter of a certain running parameter of read write line, label) difference, the annexation of peripheral components (as power amplifier, power splitter, numerical-control attenuator etc.) is also different, need thus manual demolition connecting line in the past, and according to new testing scheme connecting test circuit.
That is to say, different with the test circuit structure to read write line for the test circuit of label chip, label.In actual test process, need the annexation that manually changes each peripheral components could realize the test to various distinct devices; But the annexation that manually changes peripheral components can bring test error large, the problem that repeatability is low and spended time is long.
Summary of the invention
For the defect of prior art, the invention provides a kind of proving installation of radio frequency identification equipment.
The proving installation of the radio frequency identification equipment that one aspect of the present invention provides, it comprises: control able to programme unit and the wireless transmit test cell that is connected respectively described control able to programme unit, wireless receiving test cell, wired transmission test unit, wired reception test cell;
Described wireless transmit test cell, for the wireless transmit parameter of testing radio frequency identification equipment;
Described wireless receiving test cell, for testing the wireless receiving parameter of described radio frequency identification equipment;
Described wired transmission test unit, for testing wired transmitting running parameter of described radio frequency identification equipment;
Described wired reception test cell, for testing wired reception running parameter of described radio frequency identification equipment;
Wherein, one link of the one or more test cells in described wireless transmit test cell, wireless receiving test cell, wired transmission test unit and wired reception test cell is connected radio frequency identification equipment to be measured, and other links (link in each test cell except connecting radio frequency identification equipment to be measured) connect utility appliance;
Described control able to programme unit is tested described radio frequency identification equipment respectively according to wireless transmit test cell, wireless receiving test cell, wired transmission test unit, wired reception test cell described in the test instruction control of user's input.
As shown from the above technical solution, the proving installation of radio frequency identification equipment of the present invention automatically completes the test of the performance of various radio frequency identification equipments under the control of control able to programme unit according to default test instruction, realize the robotization of test, greatly reduce manual intervention, improve testing efficiency and ensure the repeatability of testing.In addition, on above-mentioned proving installation, be integrated with testing radio frequency identification equipment all peripheral components used.
Brief description of the drawings
Fig. 1 is the structural representation of radio frequency identification equipment in prior art;
The structural representation of the proving installation of the radio frequency identification equipment that Fig. 2 provides for one embodiment of the invention;
The structural representation of the proving installation of the radio frequency identification equipment that Fig. 3 A provides for another embodiment of the present invention;
The structural representation of the proving installation of the radio frequency identification equipment that Fig. 3 B provides for another embodiment of the present invention;
The structural representation of the proving installation of the radio frequency identification equipment that Fig. 4 provides for another embodiment of the present invention.
Embodiment
In the present invention, radio frequency identification equipment comprises the read write line of dual-port, the read write line of single port, label, label chip etc.
The read write line of single port is that emission port and receiving port are same port; The read write line of dual-port is that emission port and receiving port are read write line separately; Label is made up of label chip and antenna.
As shown in Figure 2, Fig. 2 shows the structural representation of the proving installation of the radio frequency identification equipment that one embodiment of the invention provides, the proving installation of the radio frequency identification equipment of the present embodiment comprises: control able to programme unit 201 and the wireless transmit test cell 203 that is connected control able to programme unit 201, wireless receiving test cell 204, wired transmission test unit 205 and wired reception test cell 206.
Wherein, one link of the one or more test cells in wireless transmit test cell 203, wireless receiving test cell 204, wired transmission test unit 205 and wired reception test cell 206 is connected radio frequency identification equipment to be measured, and other links (other links at this place are the link that does not connect each test cell of radio frequency identification equipment to be measured) connect utility appliance.For instance, the output terminal of wired transmission test unit 205 connects label chip to be measured, now the input end of wired transmission test unit 205 can connect known read write line, and the link of other test cells also can connect utility appliance as radio-frequency signal source, frequency spectrograph, load etc. simultaneously.Certainly, in the present embodiment, utility appliance can comprise known read write line, known label, known label chip etc.All can belong to the utility appliance of the present embodiment for the equipment of subtest radio frequency identification equipment to be measured.
In addition, wireless transmit test cell 203 is for the wireless transmit parameter of testing radio frequency identification equipment (as read write line, label); Wireless receiving test cell 204 is for the wireless receiving parameter (as receiving sensitivity, reception maximal input etc.) of testing radio frequency identification equipment (as read write line, label); Wired transmission test unit 205 for example, for wired transmitting running parameter (, emissive power and frequency accuracy etc.) of testing radio frequency identification equipment; Wired reception test cell 206 is for wired reception running parameter of testing radio frequency identification equipment.
Control able to programme unit 201 in the present embodiment is tested radio frequency identification equipment respectively according to test instruction control wireless transmit test cell 203, wireless receiving test cell 204, wired transmission test unit 205, wired reception test cell 206 of user's input.
Especially, for improving the accuracy rate of measuring radio frequency identification equipment (read write line, label), the proving installation in the present embodiment also comprises: the alignment unit 202 that connects control able to programme unit 201; This alignment unit also connects respectively wireless transmit test cell 203, wireless receiving test cell 204, wired transmission test unit 205 and wired reception test cell 206; It is for obtaining wireless transmit test cell 203, wireless receiving test cell 204, and the signal attenuation of wired transmission test unit 205 and wired reception test cell 206 is the signal attenuation on the circuit/circuit at each test cell place.
In actual applications, alignment unit 202 can connect the output terminal of the output terminal of wireless transmit test cell 203, the input end of wireless receiving test cell 204, wired transmission test unit 205, the input end of wired reception test cell 206.
The proving installation of the radio frequency identification equipment in the present embodiment can also all be integrated into all peripheral components of using (as the first numerical-control attenuator, power splitter, power amplifier etc.) in proving installation, thereby under the control of control able to programme unit, automatically complete the test of the performance of various radio frequency identification equipments according to default test instruction, realize the robotization of test, reduce manual intervention, improved testing efficiency and ensured the repeatability of testing.
As shown in Figure 3A, Fig. 3 A shows the structural representation of the proving installation of the radio frequency identification equipment that one embodiment of the invention provides, and the proving installation of the radio frequency identification equipment of the present embodiment is a particular circuit configurations exemplifying.Proving installation in the present embodiment mainly comprises: the first circulator 301, the second circulator 303, multiple switch (K1 to K13 as shown in Fig. 3 A; S61, S62; S41, S42) and multiple peripheral components (power amplifier as shown in Fig. 3 A, the first power splitter, the second power splitter, the first numerical-control attenuator, second numerical-control attenuator etc.).
Proving installation in the present embodiment is mainly to utilize control able to programme unit 201 to control the partly or entirely closed or disconnection of switch in this proving installation, to realize the switching of each test cell, and then can complete the test to various radio frequency identification equipments to be tested (as read write line, label), realize the robotization of radio frequency identification equipment test.
From Fig. 3 A, also can know, in the present embodiment, the emitting side of the proving installation of circuit structure and receiver side can be symmetrical circuit structure, and its axis of symmetry can be the straight line that the first circulator is connected with the second circulator.That is to say, can be symmetrical with the circuit in order to realize wireless receiving test cell function in order to realize the circuit of wireless transmit test cell function, also can be symmetrical with the circuit in order to realize wired reception test cell function in order to realize the circuit of wired transmission test Elementary Function.Especially, in the circuit of the wireless transmit test cell in Fig. 3 A, be serially connected with the power amplifier transmitting for method.
Shown in Fig. 2 and Fig. 3 A, the first interface n of the first circulator 301 in the present embodiment connects the input end that read write line 302, the second interface p connect wired transmission test unit 205, and the 3rd interface q connects the output terminal of wired reception test cell 206;
The first interface n of the second circulator 303 connects the label to be measured of radio frequency identification equipment, and the second interface p connects the output terminal of wired transmission test unit 205, and the 3rd interface q connects the input end of wired reception test cell 206.Will be appreciated that, aforesaid wired transmission test unit 205 and wired reception test cell 206 can be preferably will be transmitted and receive signal and separate by the first circulator, the second circulator.Conventionally, the first circulator 301, the second circulator 303 first interface separately all for connecting the equipment (this equipment can be radio frequency identification equipment or utility appliance) that can transmit and receive signal, as read write line, label, label chip etc. simultaneously.If the first interface of the first circulator connects read write line to be measured, the first interface of the second circulator can connect known label.
As shown in Figure 3A, in concrete circuit structure, wired transmission test unit can comprise: the first K switch 2, second switch S61, the 3rd switch S 41, at least one peripheral components; Wherein, the first K switch 2, second switch S61, the 3rd switch S 41 all have multiple contact jaws are connected control able to programme unit control end with one;
Control unit controls the first K switch 2 able to programme, second switch S61, the 3rd switch S 41 form at least one first signal transmitting path; At least one peripheral components is serially connected in first signal transmitting path; The receiving end of the first signal transmitting path at this place connects the second interface p of the first circulator 301, and the output terminal of first signal transmitting path connects the second interface p of the second circulator 303.Between one contact jaw of a contact jaw of the second switch S61 shown in Fig. 3 A and the 3rd switch S 41, connect one for changing the first numerical-control attenuator of the signal attenuation in first signal transmitting path.
For instance, for the read write line of single port, the circuit of realizing wired transmission test unit 205 functions can comprise the first K switch 2 shown in Fig. 3 A, second switch S61 and the 3rd switch S 41; For the read write line of dual-port, the circuit of realizing wired transmission test unit 205 functions can comprise minion pass K1, the first K switch 2, second switch S61 and the 3rd switch S 41 shown in Fig. 3 A.
As shown in Figure 3A, in the path that the first K switch 2, second switch S61, the 3rd switch S 41 form, also can comprise at least one peripheral components (as the first numerical-control attenuator).In the path that minion pass K1, the first K switch 2, second switch S61 and the 3rd switch S 41 form, also comprise at least one peripheral components (as the first power splitter).
Second switch S61 in the present embodiment is for having the switch of six contact jaws (a, b as shown in FIG., c, d, e, f contact jaw), and control end m connects control able to programme unit 201 (not shown control able to programme unit in Fig. 3 A); The 3rd switch S 41 is for having the switch of three contact jaws (a, b as shown in Fig. 3 A, c contact jaw), control end m connects control able to programme unit 201, the first K switch 2 and minion are closed K1 and are have two contact jaws switch of (a as shown in Fig. 3 A, b contact jaw), and control end m connects control able to programme unit 201.
Between an e contact jaw of second switch S61 shown in Fig. 3 A and a c contact jaw of the 3rd switch S 41, connect one for changing the first numerical-control attenuator 304 of the signal attenuation in first signal transmitting path.Certainly, in other embodiments, it is six switches more than contact jaw that second switch S61 can be set, the 3rd switch S 41 is three switches more than contact jaw, can between the contact jaw of second switch S41 and the contact jaw of the 3rd switch S 61, arrange thus other for testing the peripheral components of transmitting running parameter of read write line.Will be appreciated that, between the contact jaw d of the second switch S61 shown in Fig. 3 A and the contact jaw b of the 3rd switch S 41, do not connect peripheral components, this setting is for this path of the convenient calibration of alignment unit, to improve the precision of measurement.
Correspondingly, wired reception test cell comprises: the 4th K switch 4, the 5th switch S 62, the 6th switch S 42, at least one peripheral components; Wherein, the 4th K switch 4, the 5th switch S 62, the 6th switch S 42 all have multiple contact jaws are connected control able to programme unit control end with one.Control unit controls the 4th K switch 4 able to programme, the 5th switch S 62, the 6th switch S 42 form at least one first signal receiving path.At least one peripheral components (as the second numerical-control attenuator 305 in Fig. 3 A) is serially connected in first signal receiving path; For instance, between a contact jaw of the 5th switch S 62 and a contact jaw of the 6th switch S 42, connect one for changing the second numerical-control attenuator of the signal attenuation in first signal receiving path.The receiving end of first signal receiving path connects the 3rd interface of the second circulator; The output terminal of first signal receiving path connects the 3rd interface of the first circulator.
For the read write line of single port, the circuit of realizing wired reception test cell 206 functions can comprise the 4th K switch 4, the 5th switch S 62 and the 6th switch S 42 shown in Fig. 3 A; For the read write line of dual-port, the circuit of realizing wired reception test cell 206 functions can comprise the 8th switch K3 shown in Fig. 3 A, the 4th K switch 4, the 5th switch S 62 and the 6th switch S 42.
For instance, the 5th switch S 62 shown in Fig. 3 A is for having the switch of five contact jaws (a, b as shown in Fig. 3 A, c, d, e contact jaw), and control end m connects control able to programme unit 201; The 6th switch S 42 is for having the switch of three contact jaws (a, b as shown in Fig. 3 A, c contact jaw), and control end m connects control able to programme unit 201; The 4th K switch 4 and the 8th switch K3 are for having the switch of two contact jaws (a as shown in Fig. 3 A, b contact jaw), and control end m connects control able to programme unit 201.
Between one b contact jaw of the 5th switch S 62 and an a contact jaw of the 6th switch S 42, connect one second numerical-control attenuator 305.Certainly, the contact jaw of (increase or reduce) aforesaid arbitrary switch in other embodiments, can be set according to actual needs, to meet the connection requirement of the reception running parameter of test read write line or the peripheral components of transmitting running parameter.
Shown in Fig. 2 and Fig. 3 A, comprise in order to the circuit of realizing wireless transmit test cell 203 functions: minion is closed K1, the first K switch 2, second switch S61.The minion at this place is closed K1 and is had multiple contact jaws are connected control able to programme unit control end with one.Wherein, control able to programme unit 201 is controlled minion and is closed K1, the first K switch 2, second switch S61 and form at least one secondary signal transmitting path; The receiving end of secondary signal transmitting path connects emission port or the utility appliance (as radio-frequency signal source or the transmitter 306 as shown in Fig. 3 A) of radio frequency identification equipment, and the output terminal of secondary signal transmitting path connects emitting antenna or utility appliance (as load).
That is to say, the input end of the wireless transmit test cell 203 in the present embodiment connects the emission port of radio frequency identification equipment, and the output terminal of wireless transmit test cell 203 connects penetrates emitting antenna 307.
Accordingly, comprise in order to the circuit of realizing wireless receiving test cell 204 functions: the 8th switch K3, the 4th K switch 4 and the 5th switch S 62.The 8th switch K3 at this place has multiple contact jaws are connected control able to programme unit 201 control end with one.Wherein, control unit controls the 8th switch K3 able to programme, the 4th K switch 4, the 5th switch S 62 form at least one secondary signal receiving path; The receiving end of secondary signal receiving path connects receiving antenna or utility appliance, and the output terminal of secondary signal receiving path connects receiving port or the utility appliance (receiver 309 as shown in Fig. 3 A) of radio frequency identification equipment.
That is to say, in the present embodiment, the input end of wireless receiving test cell 204 connects receiving antenna 308, and the output terminal of wireless receiving test cell 204 connects the receiving port of radio frequency identification equipment.
Can in the circuit of realizing wireless transmit test cell, be connected in series in actual applications a power amplifier 310, with so that the signal of transmission antennas transmit can be exaggerated, further can test preferably emitting antenna and/parameter such as sensitivity, antijamming capability of receiving antenna.
It should be noted that, in the time that radio frequency identification equipment is only label chip to be measured, can use known read write line to be connected to the first interface n of the first circulator, label chip to be measured is connected to the first interface n of the second circulator.Now aforesaid emission port is connected to known radio-frequency signal source, emitting antenna uses the load of 50 ohm to substitute; Accordingly, receiving antenna also uses the load of 50 ohm to substitute, and aforesaid receiving port connects known frequency spectrograph, is illustrated in fig. 4 shown below.
Further, shown in Fig. 2 and Fig. 3 B, in proving installation shown in Fig. 3 B, also comprise the circuit of the function that realizes alignment unit 202, this alignment unit 202 comprises: multiple the 9th switches (K5, K6 as shown in Figure 3 B, K7, K8, K9, K10, K11, K12, K13), the 9th switch can have multiple contact jaws are connected described control able to programme unit control end with one.
Each shown in Fig. 3 B the 9th switch is the switch with two contact jaw a, b, and control end m connects described control able to programme unit 201.Multiple the 9th switches at this place can be used for the output terminal of wireless transmit test cell 203 to be connected with the input end of wireless receiving test cell 204; Or, for the output terminal of wireless transmit test cell 203 is connected with the input end of wired reception test cell 206; Or, for the output terminal of wired transmission test unit 205 is connected with the input end of wireless receiving test cell 204.
For instance, control able to programme unit 201 is controlled a contact jaw of the 9th K switch 5, the b contact jaw of K6, the b contact jaw of K11, a contact jaw, a contact jaw of K9 and the b contact jaw of K10 of K12 and is communicated with successively, can realize the output terminal of wireless transmit test cell 203 is connected with the input end of wireless receiving test cell 204; And then can know to realize the damping capacity P on the circuit of wireless transmit test cell 203
1, and can know to realize the damping capacity P on the circuit of wireless receiving test cell 204
2.
Correspondingly, control able to programme unit 201 is controlled a contact jaw of the 9th K switch 5, the b contact jaw of K6, the b contact jaw of K11, a contact jaw of K12, a contact jaw, a contact jaw of K10 and the b contact jaw of K8 of K9 and is communicated with successively, can realize the just output terminal of wireless transmit test cell 203 and be connected with the input end of wired reception test cell 206; And then can know the damping capacity P of the circuit of realizing wired reception test cell 206
4.
Further, the b contact jaw of the 9th K switch 2, the d contact jaw of S61, the b contact jaw of S41, a contact jaw of K8, a contact jaw of K7, the b contact jaw of K13, the b contact jaw of K12, a contact jaw of K9, the b contact jaw connection of K10 are controlled in control able to programme unit 201, can realize the output terminal of wired transmission test unit 205 is connected with the input end of wireless receiving test cell 204; And then can know the damping capacity P of the circuit of realizing wired transmission test unit 205
3,
For example, can obtain according to following formula the damping capacity of the circuit of dependence test unit:
The damping capacity of the circuit of wireless transmit test cell 203: P
1=P
12/ 2;
The damping capacity of the circuit of wireless receiving test cell 204: P
2=P
12/ 2;
The damping capacity of the circuit of wired transmission test unit 205: P
3=P
32-P
12/ 2;
The damping capacity of the circuit of wired reception test cell 206: P
4=P
14-P
12/ 2.
It should be noted that, in the time of the aforesaid each test cell of calibration, the input end of wireless transmit test cell 203 connects known radio-frequency signal source (being that emission port connects radio-frequency signal source), and the output terminal of wireless receiving test cell 204 connects frequency spectrograph (being that receiving port connects frequency spectrograph).Will be appreciated that, in the present embodiment, can think that wireless transmit test cell 203 is identical with the circuit structure of wireless receiving test cell 204, therefore can think P
1=P
2=(1/2) P
12.Certainly,, in the time of the read write line of test single port, can use standard/known label to coordinate; In the time of test label, can use standard/known read write line to coordinate.
It should be noted that, in Fig. 3 A and Fig. 3 B, also shown with the first power splitter and the second power splitter, it is for synthesizing the power of two circuits the power stage of one circuit.In actual test process, the connection of peripheral components can be set as required.
From the description of above-described embodiment, the circuit structure that proving installation in the present embodiment consists of multiple switches has been realized the function of each test cell, and the peripheral components of needs can be connected, and then can under the control of control able to programme unit, automatically complete the test of the performance of various radio frequency identification equipments according to default test instruction, realize the robotization of test, greatly reduce manual intervention, improve testing efficiency and ensure the repeatability of testing.
Especially, above-mentioned proving installation can complete the self calibration of each test cell, and then obtains the damping capacity of each test cell, to improve the measuring accuracy to radio frequency identification equipment, and can ensure the repeatability of test.
In actual application scenarios, aforesaid proving installation can complete the transmitting-receiving relevant test of dual-port read write line separately; Further, because the proving installation in the present embodiment is circumscribed with emitting antenna 307 and receiving antenna 308, and then can realize preferably the dependence test of the radio frequency identification equipment to double antenna.Especially, when control able to programme unit forwards K switch 8 to K switch 10, proving installation can complete the dependence test of the radio frequency identification equipment to single antenna.The test cell that the test cell that receiving antenna 308 connects is connected with emitting antenna 307 can be tested label, and wired transmission test unit and wired reception test cell can be tested label chip.
It should be noted that the each accompanying drawing in the embodiment of the present invention is only explanation embodiments of the invention, the contact jaw of the switch shown in its figure is only for illustrating, and the present invention does not limit the quantity of the contact jaw of each switch.
Shown in Fig. 4, Fig. 4 shows the structural representation of the proving installation of the radio frequency identification equipment that another embodiment of the present invention provides, and exemplifies explanation with the circuit structure shown in Fig. 4 for the sensitivity of test label chip.
Particularly, label chip to be measured is connected to the first interface n of the second circulator, and known read write line is connected to the first interface n of the first circulator.Now, connect known radio-frequency signal source at the input end of wireless transmit test cell, adopt the load of 50 ohm to substitute at emitting antenna place; Connect known frequency spectrograph at the output terminal of wireless receiving test cell, adopt the load of 50 ohm to substitute at receiving antenna place.The object that frequency spectrograph, radio-frequency signal source are set in the present embodiment is the each test cell for calibrated tester, and obtains the damping capacity corresponding to circuit structure of each test cell.It is for preventing that extraneous signal from disturbing that emitting antenna, receiving antenna place arrange 50 ohm load.
First, the closed or disconnection of each switch in proving installation is adjusted in control able to programme unit, proving installation is calibrated, to obtain the damping capacity corresponding to circuit structure of each test cell.For example, obtain from radio-frequency signal source to label chip to be measured damping capacity the path of process be P
1'; Further, the damping capacity that the first numerical-control attenuator, the second numerical-control attenuator are set is 20dB, to prevent that powerful read write line from damaging label.
Secondly, be communicated with the circuit structure of function of realizing wired transmission test unit, if the circuit flow in Fig. 4 is to being: read write line, the first circulator, K switch 2, switch S 61, the first numerical-control attenuator, switch S 41, the second circulator, K switch 8, K switch 7, label chip to be measured.Now, if read write line can not detect label chip, reduce the damping capacity of the first numerical-control attenuator, until the critical point of label chip can be detected; If read write line can detect label chip, increase the damping capacity of the first numerical-control attenuator until the critical point of label chip can be detected.
It should be noted that repeatability and degree of accuracy in order to ensure test, can adopt communication success ratio (such as 50% success ratio) to demarcate critical point now.Be greater than 50% communication success ratio, damping capacity increases; Be less than 50% communication success ratio, damping capacity reduces, and obtains final critical attenuation amount P with this
mid.Afterwards by the emissive power P of read write line
0deduct the damping capacity P of the first numerical-control attenuator
midand P
1' be the sensitivity of label chip to be measured.
In actual applications, in order to ensure the accuracy of test result, before test, need the emissive power P to read write line
0demarcate.The emissive power P of read write line
0demarcation also can in proving installation, adopt control unit controls proving installation able to programme to obtain, the emissive power P of read write line sent into frequency spectrograph and obtains by the path that forms by multiple switches of for example read write line can being transmitted
0.
Calibration to each switch and attenuator in above-mentioned proving installation, test are all to adopt control able to programme unit to realize, thereby reach the object of automatic test.Thus, can reduce the manual intervention in various test processs, reduce the wiring mistake probability in circuit handoff procedure, greatly reduce the test duration, and ensure the repeatability of all tests.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can complete by the relevant hardware of programmed instruction.Aforesaid program can be stored in a computer read/write memory medium.This program, in the time carrying out, is carried out the step that comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. the proving installation of a radio frequency identification equipment, it is characterized in that, comprise: control able to programme unit and the wireless transmit test cell that is connected respectively described control able to programme unit, wireless receiving test cell, wired transmission test unit, wired reception test cell;
Described wireless transmit test cell, for the wireless transmit parameter of testing radio frequency identification equipment;
Described wireless receiving test cell, for testing the wireless receiving parameter of described radio frequency identification equipment;
Described wired transmission test unit, for testing wired transmitting running parameter of described radio frequency identification equipment;
Described wired reception test cell, for testing wired reception running parameter of described radio frequency identification equipment;
Wherein, a link of the one or more test cells in described wireless transmit test cell, wireless receiving test cell, wired transmission test unit and wired reception test cell is connected radio frequency identification equipment to be measured, and other links connect utility appliance;
Described control able to programme unit is tested described radio frequency identification equipment respectively according to wireless transmit test cell, wireless receiving test cell, wired transmission test unit, wired reception test cell described in the test instruction control of user's input;
Also comprise: for transmitting and the first circulator, the second circulator that receive signal and separate;
The first interface of described the first circulator connects the equipment that can transmit and can receive signal, and the second interface connects the input end of described wired transmission test unit, and the 3rd interface connects the output terminal of described wired reception test cell;
The first interface of described the second circulator connects the equipment that can transmit and can receive signal, and the second interface connects the output terminal of described wired transmission test unit, and the 3rd interface connects the input end of described wired reception test cell;
Described wired transmission test unit comprises: the first switch (K2), second switch (S61), the 3rd switch (S41), at least one peripheral components;
Wherein, described the first switch (K2), second switch (S61), the 3rd switch (S41) all have multiple contact jaws are connected described control able to programme unit control end with one;
Described in described control unit controls able to programme, the first switch (K2), second switch (S61), the 3rd switch (S41) form at least one first signal transmitting path;
At least one peripheral components is serially connected in described first signal transmitting path;
The receiving end of described first signal transmitting path connects the second interface of described the first circulator, and the output terminal of described first signal transmitting path connects the second interface of described the second circulator.
2. proving installation according to claim 1, it is characterized in that, also comprise: connect the alignment unit of described control able to programme unit, described alignment unit also connects respectively described wireless transmit test cell, wireless receiving test cell, wired transmission test unit, wired reception test cell;
Described alignment unit, for obtaining described wireless transmit test cell, wireless receiving test cell, the signal attenuation of wired transmission test unit and wired reception test cell.
3. proving installation according to claim 1 and 2, it is characterized in that, between a contact jaw of described second switch (S61) and a contact jaw of described the 3rd switch (S41), connect one for changing the first numerical-control attenuator of the signal attenuation in described first signal transmitting path.
4. proving installation according to claim 1 and 2, is characterized in that, described wired reception test cell comprises: the 4th switch (K4), the 5th switch (S62), the 6th switch (S42), at least one peripheral components;
Wherein, described the 4th switch (K4), described the 5th switch (S62), described the 6th switch (S42) all have multiple contact jaws are connected described control able to programme unit control end with one;
Described in described control unit controls able to programme, the 4th switch (K4), the 5th switch (S62), the 6th switch (S42) form at least one first signal receiving path;
At least one peripheral components is serially connected in described first signal receiving path;
The receiving end of described first signal receiving path connects the 3rd interface of described the second circulator; The output terminal of described first signal receiving path connects the 3rd interface of described the first circulator.
5. proving installation according to claim 4, it is characterized in that, between a contact jaw of described the 5th switch (S62) and a contact jaw of described the 6th switch (S42), connect one for changing the second numerical-control attenuator of the signal attenuation in described first signal receiving path.
6. proving installation according to claim 1 and 2, is characterized in that, described wireless transmit test cell comprises: minion is closed (K1), described the first switch (K2) and described second switch (S61);
Described minion is closed (K1) and is had multiple contact jaws are connected described control able to programme unit control end with one;
Described in described control unit controls able to programme, minion is closed (K1), the first switch (K2), second switch (S61) forms at least one secondary signal transmitting path;
The receiving end of described secondary signal transmitting path connects emission port or the utility appliance of described radio frequency identification equipment, and the output terminal of described secondary signal transmitting path connects emitting antenna or utility appliance.
7. proving installation according to claim 4, is characterized in that, described wireless receiving test cell comprises: the 8th switch (K3), described the 4th switch (K4), the 5th switch (S62);
The 8th switch (K3) has multiple contact jaws are connected described control able to programme unit control end with one;
Described in described control unit controls able to programme, the 8th switch (K3), the 4th switch (K4), the 5th switch (S62) form at least one secondary signal receiving path;
The receiving end of described secondary signal receiving path connects receiving antenna or utility appliance, and the output terminal of described secondary signal receiving path connects receiving port or the utility appliance of described radio frequency identification equipment.
8. proving installation according to claim 2, is characterized in that, described alignment unit comprises:
Multiple the 9th switches (K5, K6, K7, K8, K9, K10, K11, K12, K13), described the 9th switch has multiple contact jaws are connected described control able to programme unit control end with one;
Described multiple the 9th switch is for being connected the output terminal of wireless transmit test cell with the input end of wireless receiving test cell; Or, for the output terminal of described wireless transmit test cell is connected with the input end of described wired reception test cell; Or, for the output terminal of described wired transmission test unit is connected with the input end of described wireless receiving test cell.
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| CN106487464B (en) * | 2015-08-31 | 2019-06-18 | 联芯科技有限公司 | A kind of mutual interference authentication center and mutual interference verification method |
| CN105447535B (en) * | 2015-10-30 | 2018-03-09 | 无锡职业技术学院 | Warehouse sluice gate gated data collecting test system |
| CN105277828A (en) * | 2015-11-10 | 2016-01-27 | 成都天奥测控技术有限公司 | Multi-functional RFID testing instrument and testing method thereof |
| CN106199296B (en) * | 2016-09-08 | 2023-03-24 | 南京国睿安泰信科技股份有限公司 | Method for rapidly testing frequency response characteristic of RFID (radio frequency identification) tag |
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| CN108337668B (en) * | 2018-03-13 | 2019-11-12 | 华中科技大学 | A kind of Bluetooth label configurator |
| CN108495323B (en) * | 2018-03-13 | 2019-09-27 | 华中科技大学 | A kind of Bluetooth label detector with a variety of detection patterns |
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