CN105978638A - Tester and test method for response time of portable transponder - Google Patents
Tester and test method for response time of portable transponder Download PDFInfo
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- CN105978638A CN105978638A CN201610511605.6A CN201610511605A CN105978638A CN 105978638 A CN105978638 A CN 105978638A CN 201610511605 A CN201610511605 A CN 201610511605A CN 105978638 A CN105978638 A CN 105978638A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention discloses a tester and a test method for a response time of a portable transponder. The test method comprises the following steps that a processing unit compares output voltage and a starting voltage value, and when the output voltage reaches the starting voltage value, a timer records the moment as a transponder startup moment t1; when the processing unit receives a code receiving signal, the timer records the moment as a code reception start moment t2; when a decoding unit decodes a first frame of correct message, the processing unit obtains a bit number of the first frame of correct message, so that the decoding time Tr=n*T of the first frame of correct message is obtained, wherein T is a symbol cycle; and the processing unit computes to obtain an output message response time Trsp=Tr-(t1-t2) of the transponder and displays the output message response time outwards. According to the tester and the test method for the response time of the portable transponder, the output message response time of the transponder can be measured on the transponder installation scene, so that the trouble of disassembling the transponder to a laboratory to detect is avoided, and the real working condition of the transponder on the scene can be reflected.
Description
Technical field
The present invention relates to the dot-mode transponder transmission system of Source of Railway Communication and Signalling field train operation control system, especially a kind of
Portable transponder response time tester and method of testing.
Background technology
The train operation whistle control system (CTCS-2 and CTCS-3) at China's high speed passenger dedicated railway is applied to be dependent on landing
Face transponder.Ground transponder (abbreviation transponder) is a kind of by the car ground information transmission technology, at the key position of circuit,
The critical circuits data (referred to as message) that traffic safety is relevant are supplied to on-vehicle control apparatus, to realize the high speed of automatization
The point type equipment of safety running control.
The operation principle of transponder is: the various track datas on ground (such as line length, the gradient, bend, kilometer post, change
Phase point etc.) stored by transponder；When train sails the zone of action of transponder into, (transponder passes the vehicle-mounted BTM of train
Defeated module, the abbreviation of Balise Transmission Module) antenna radiates the radio-frequency (RF) energy of 27MHz, response earthward
After device obtains energy, the track data stored immediately with the FSK mode of frequency regulation of carrier frequency 4.23M to train transmission, by car
Carry BTM antenna to receive.After train receives the information of transponder, last again by Train Control through amplifying, demodulate, decoding
System realizes automatically controlling car.
Owing to transponder is widely used to each big trunk railway and Line for Passenger Transportation, if transponder occurs abnormal, the most then affect
Driving efficiency, heavy then cause train operation accident, therefore more and more higher to the test request of transponder, to transponder test hands
Section, the agility of test process, convenience demand more and more urgent.For the test of transponder, generally use response
Device read write line (also referred to as message read write line, Balise Telegram Programmer are called for short BP) writes message to transponder,
Then by reading the correctness of the just message audit message of write.But message read write line volume is big, heavy is carried not
Convenient, and unit price is expensive, and be only capable of the correctness of the message of storage in transponder is tested, and lack transponder
The detection of parameter characteristic (such as transponder outgoing message response time etc.) own and judgement.Once there is event in transponder itself
Barrier or transponder transmitting procedure make a mistake, still influences whether drive a vehicle efficiency and traffic safety.
The outgoing message response time of transponder is a critically important parameter for transponder, refers to receive from transponder
The startup magnetic flux that energy is Φ d1 that vehicle-mounted BTM antenna sends starts, and receives transponder output to vehicle-mounted BTM antenna
4.23MHz fsk modulated signal till time (see " FFFIS for Eurobalise " (eurobalise pattern
Adaption function interface specification) subset-036 (3.0.0 version；2012.2.24 distribution) (hereinafter referred to as " specification 036 ")
5.2.2.9 joint).Wherein Φ d1 is to start magnetic flux, represents under the excitation of this magnetic flux, and transponder must start up.Due to
High ferro speed per hour has reached 350km/h at present, and the level of the transponder direction along ng a path used on current railroad track is effectively made
It is only 500mm to 600mm, say, that train is about 6ms through the time of transponder effective range by scope.
If within this period, the message of redundancy can not be sent to vehicle-mounted BTM and by mobile unit efficient coding, then by transponder
Transponder can be caused " to lose a little ", cause traffic safety accident or parking, directly affect traffic safety and driving efficiency.And it is current
Portable transponder response time tester does not the most possess the function of the outgoing message response time of test transponder.
Summary of the invention
In order to solve the above-mentioned test problem in transponder erecting bed to the outgoing message response time of transponder, the present invention
Provide a kind of portable transponder response time tester.
A kind of portable transponder response time tester, including processing unit, signal generator, gain control unit, merit
Put unit, A4 interface；A1 interface, filter amplification circuit, demodulating unit, code stream receive unit, decoding unit；Power supply
Module, display module；
Described processing unit includes timer, arithmetical unit, memorizer, described timer in order to record crucial moment, described pass
The key moment includes transponder Startup time t1, starts to receive code moment t2；Calculate first frame correct message decoding time described arithmetical unit
Tr；
Described processing unit is connected with gain control unit, power amplifier unit, A4 interfacing order；Described processing unit also with decoding
Unit, code stream receive unit, demodulating unit, filter amplification circuit, the connection of A1 interfacing order；Described processing unit also with code
Stream receives unit and connects；
Described processing unit sends activated with energy signal to gain control unit, timing by described timer record simultaneously
Moment；
Described signal generator is connected with gain control unit, and sends standard traffic energy signal to gain control unit；Institute
State the gain control unit activated with energy signal according to processing unit, modulation standard communication energy signal, and send it to merit
Put unit, thus adjust A4 interface and send radio-frequency (RF) energy；
Described processing unit makes A4 interface send the startup magnitude of voltage of startup magnetic flux phi d1 in calibration phase storage；Described place
Reason unit is at the output voltage of measuring phases Real-time Collection gain control unit, by described output voltage and described startup magnitude of voltage
Compare；When described output voltage has just reached described startup magnitude of voltage, this moment of described timer record is that transponder opens
Dynamic moment t1；
Described power amplifier unit, in order to carry out power amplification to the standard traffic energy signal of modulation and to send it to A4 interface；
Described A4 interface, by electromagnetic coupled mode using the modulation standard communication energy signal of the power amplification received as swashing
Send out energy to emission；
Described A1 interface, in order to receive the code stream modulated signal that tested transponder sends, and sends described code stream modulated signal
To described filter amplification circuit；
The described code stream modulated signal received is filtered, amplifies by described filter amplification circuit, is then believed by filter and amplification
Number it is sent to demodulating unit；
The filter and amplification signal received is demodulated into base band code stream by described demodulating unit, and base band code stream is sent to described code
Stream receives unit；
Described code stream receives the base band code stream that unit storage receives, position sequence number m of record base band code stream；Described code stream receives
Unit, while receiving first code element of base band code stream, sends receipts code signal to described processing unit；
Described processing unit is when receiving described receipts code signal, and this moment of described timer record is for starting to receive code moment t2；
Described decoding unit, in order to be decoded into transmission message by the described base band code stream received；Translating the first correct message of frame
Time, send correct decoding mode bit to processing unit；
Described processing unit after receiving the described correct decoding mode bit of decoding unit, obtain described code stream receive unit this
Time position sequence number m, institute's rheme sequence number m deduct a frame message length N, obtain position sequence number n of the first correct message of frame, from
And obtain first frame correct message decoding time Tr=n × T, wherein T is code-element period；
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, first frame correct message decoding
After time Tr, it is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder, and by described transponder
Outgoing message response time Trsp be shown to described display module and/or storage in described memorizer.
A kind of portable transponder response time tester, including processing unit, signal generator, gain control unit, merit
Put unit, A4 interface；A1 interface, filter amplification circuit, demodulating unit, code stream receive unit, decoding unit；Power supply
Module, display module；
Described processing unit includes timer, arithmetical unit, memorizer, described timer in order to record crucial moment, described pass
The key moment includes transponder Startup time t1, starts to receive code moment t2；Calculate first frame correct message decoding time described arithmetical unit
Tr；
Described processing unit is connected with gain control unit, power amplifier unit, A4 interfacing order；Described processing unit also with decoding
Unit, code stream receive unit, demodulating unit, filter amplification circuit, the connection of A1 interfacing order；Described processing unit also with code
Stream receives unit and connects；
Described processing unit sends activated with energy signal to gain control unit, timing by described timer record simultaneously
Moment；
Described signal generator is connected with gain control unit, and sends standard traffic energy signal to gain control unit；Institute
State the gain control unit activated with energy signal according to processing unit, modulation standard communication energy signal, and send it to merit
Put unit, thus adjust A4 interface and send radio-frequency (RF) energy；
Described processing unit makes A4 interface send the startup magnitude of voltage of startup magnetic flux phi d1 in calibration phase storage；Described place
Reason unit is at the output voltage of measuring phases Real-time Collection gain control unit, by described output voltage and described startup magnitude of voltage
Compare；When described output voltage has just reached described startup magnitude of voltage, this moment of described timer record is that transponder opens
Dynamic moment t1；
Described power amplifier unit, in order to carry out power amplification to the standard traffic energy signal of modulation and to send it to A4 interface；
Described A4 interface, by electromagnetic coupled mode using the modulation standard communication energy signal of the power amplification received as swashing
Send out energy to emission；
Described A1 interface, in order to receive the code stream modulated signal that tested transponder sends, and sends described code stream modulated signal
To described filter amplification circuit；
The described code stream modulated signal received is filtered, amplifies by described filter amplification circuit, is then believed by filter and amplification
Number it is sent to demodulating unit；
The filter and amplification signal received is demodulated into base band code stream by described demodulating unit, and base band code stream is sent to described code
Stream receives unit；
Described code stream receives the base band code stream that unit storage receives；Described code stream receives unit and is receiving the of base band code stream
While one code element, send receipts code signal to described processing unit；
Described processing unit is when receiving described receipts code signal, and this moment of described timer record is for starting to receive code moment t2；
Described decoding unit, in order to be decoded into transmission message by the described base band code stream received；Translating the first correct message of frame
Time, position sequence number n of the first correct message of frame is issued described processing unit；
Described processing unit, after position sequence number n receiving the described first correct message of frame, obtains first frame correct message decoding time
Tr=n × T, wherein T is code-element period；
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, the position of the first correct message of frame
After sequence number n, it is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder, and by described transponder
Outgoing message response time Trsp be shown to described display module and/or storage in described memorizer.
Preferably, position sequence number n of the described first correct message of frame is the position sequence number of the first code element of the first correct message of frame.
A kind of portable transponder response time method of testing, including calibration phase and test phase；
At calibration phase, the memorizer record of the portable transponder response time tester that one of claims 1 to 3 is described
Send with A4 interface and start the corresponding output voltage of magnetic flux phi d1 for starting magnitude of voltage；
Comprise the steps at test phase,
Described processing unit sends activated with energy signal to gain control unit, and record starts the moment of timing simultaneously；
The output voltage of Real-time Collection gain control unit, characterizes magnetic flux by the output voltage of gain control unit；And
Described output voltage is compared with described startup magnitude of voltage；When described output voltage has just reached described startup magnitude of voltage,
Recording this moment is transponder Startup time t1；
Described code stream reception unit, when receiving first code element of base band code stream, records this moment for starting to receive code moment t2；
Described gain control unit according to the activated with energy signal of processing unit, modulation standard communication energy signal, and by it
Give power amplifier unit, thus adjust A4 interface and send radio-frequency (RF) energy；
Until described A4 interface send out reach start magnetic flux phi d1 radio-frequency (RF) energy activate tested transponder, tested should
Answer device and receive described radio-frequency (RF) energy, transponder outgoing message is sent out in the way of code stream modulated signal；
The code stream modulated signal that the described tested transponder of A1 interface sends, the filtering of amplifying circuit, amplification after filtering,
The most demodulated unit is demodulated into base band code stream, then is sent to described decoding unit through described code stream reception unit；
The described base band code stream received is decoded into transmission message by described decoding unit；When translating the first correct message of frame, will
Position sequence number n of the described first correct message of frame issues described processing unit；Described processing unit is calculated the first correct message of frame and translates
Code time Tr=n × T, wherein T is code-element period；
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, the position of the first correct message of frame
After sequence number n, it is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder,
The outgoing message response time of described transponder is shown to described display module and/or stores in described memorizer.
Preferably, at described calibration phase, first send to a Standard balise with standard radio frequency energy source and there is startup magnetic flux
The radio-frequency (RF) energy of amount Φ d1, the standard sensing that record now induces on described Standard balise starts voltage；Then with
Portable transponder response time tester described in one of claims 1 to 3 replaces described standard radio frequency energy source to described
Standard balise sends radio-frequency (RF) energy, adjusts the size of radio-frequency (RF) energy, makes to induce on described Standard balise described standard
Sensing starts voltage, it is believed that the magnetic flux that now A4 interface sends right up to starts magnetic flux phi d1, and record is now described
The output voltage of the gain control unit of portable transponder response time tester is for starting magnitude of voltage, and stores it in place
On the memorizer of reason unit.
Preferably, position sequence number n of the described first correct message of frame is the position sequence number of the first code element of the first correct message of frame.
Beneficial effects of the present invention: the portable transponder response time tester of the present invention, it is possible in transponder erecting bed,
On the one hand the outgoing message response time of transponder is measured, avoids and transponder is dismantled back what laboratory carried out detecting
Trouble；On the other hand, in-site measurement can reflect transponder real work situation at the scene, it is to avoid is drawn by environmental factors
Rise, transponder goes wrong at the scene and cannot reappear the situation of problem after returning factory.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment the present invention is further detailed explanation:
Fig. 1 a is the structural representation of the portable transponder response time tester of one embodiment of the invention.
Fig. 1 b is the structural representation of the portable transponder response time tester of one embodiment of the invention.
Fig. 2 is the schematic diagram of the transponder outgoing message response time method of testing of the present invention.
Fig. 3 is the transponder input-output characteristic curve schematic diagram of the up-link field intensity of " specification 036 ".
Fig. 4 is the schematic diagram of base band code stream.
Fig. 5 a is the decoding unit of one embodiment of the invention, the operating diagram of code stream reception unit.
Fig. 5 b is the decoding unit of one embodiment of the invention, the operating diagram of code stream reception unit.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention more explicit, below in conjunction with embodiment and accompanying drawing to this
Technical scheme in bright embodiment is described in further details.Obviously, described embodiment is the part enforcement of the present invention
Example rather than all embodiment.Here, the exemplary embodiment of the present invention and explanation thereof are mainly used in explaining the present invention,
But it is not as a limitation of the invention.
A kind of portable transponder response time tester, as shown in Figure 1 b, including processing unit, signal generator, gain
Control unit, power amplifier unit, A4 interface；A1 interface, filter amplification circuit, demodulating unit, code stream receive unit, translate
Code unit；Power module, display module.
Described processing unit includes timer, arithmetical unit, memorizer, described timer in order to record crucial moment, described pass
The key moment includes transponder Startup time t1, starts to receive code moment t2；Calculate first frame correct message decoding time described arithmetical unit
Tr。
Described processing unit is connected with gain control unit, power amplifier unit, A4 interfacing order；Described processing unit also with decoding
Unit, code stream receive unit, demodulating unit, filter amplification circuit, the connection of A1 interfacing order；Described processing unit also with code
Stream receives unit and connects.Described processing unit is also connected with display module.
Described processing unit sends activated with energy signal to gain control unit, timing by described timer record simultaneously
In the moment, it is designated as the moment of t=0, as shown in Figure 2.
Described signal generator is connected with gain control unit, and sends standard traffic energy signal to gain control unit and (press
It is the radio-frequency (RF) energy of 27MHz according to Europe superscript)；Described gain control unit is according to the activated with energy signal of processing unit, modulation mark
Quasi-communication energy signal (wave amplitude of modulation standard communication energy signal), and send it to power amplifier unit, thus adjust A4
Interface sends the radio-frequency (RF) energy of the magnetic flux meeting test request.For the ease of measuring, the activated with energy signal of processing unit can
To be control level；Described processing unit controls A4 interface by control level and sends the radio frequency of the magnetic flux meeting test request
Energy.In side circuit, the electronic device such as audion, adjustable resistor or circuit can be used as gain control unit
Realize above-mentioned functions.Furthermore it is preferred that (correspondence " is advised such as respectively in the case of the gear having multiple control level
Model 036 " 5.2.2.6 joint in the transponder input-output characteristic of up-link field intensity of Figure 16 i.e. Fig. 3 of the present invention bent
The control level of three gears of three magnetic flux in line schematic diagram), can be (each by the gain control circuit of multiple parallel connections
Gain control circuit can be in series by gate circuit and resistance or audion) to control the input voltage of power amplifier unit, from
And adjust A4 interface by power amplifier unit and send the radio-frequency (RF) energy of the different magnetic flux that test needs.
No matter in test process or in real work, the magnetic flux of the radio-frequency (RF) energy that A4 interface sends is not moment to reach to open
Dynamic magnetic flux phi d1, and be intended to experience one as shown in Figure 3, by zero process increasing to start magnetic flux phi d1, at this
During, radio-frequency (RF) energy is not enough so that tested transponder works；The magnetic flux of the radio-frequency (RF) energy only sent at A4 interface is more than
After starting magnetic flux phi d1, energy could be provided for transponder so that transponder works.Therefore, what the present invention calculated should
Answering device outgoing message response time and should deducting A4 interface from just startup, radio-frequency (RF) energy is zero, to the magnetic flux of the radio-frequency (RF) energy sent
Amount just reaches to start (i.e. the t1 shown in " Φ d1 detection " progress bar in Fig. 2) during this period of time of magnetic flux phi d1.Due to
Pretreatment unit while sending activated with energy signal to gain control unit, as it has been described above, by described timer
Have recorded the moment i.e. moment of t=0 starting timing, just starting to start work, i.e. A4 interface as long as therefore re-recording transponder
The moment that the radio-frequency (RF) energy launched arrives startup magnetic flux phi d1, (i.e. t1 in Fig. 2, when being referred to as transponder startup in the present invention
Carve t1).In order to measure this transponder Startup time t1, when needing the portable transponder to the present invention to respond before testing
Between tester calibrate.
As a preferred embodiment, at calibration phase, can first send to a Standard balise with standard radio frequency energy source
Having the radio-frequency (RF) energy starting magnetic flux phi d1, the standard sensing that record now induces on described Standard balise starts
Voltage；Then replace above-mentioned standard radio frequency energy source to described standard with the portable transponder response time tester of the present invention
Transponder sends radio-frequency (RF) energy, adjusts the size of radio-frequency (RF) energy, makes to induce above-mentioned standard sense on described Standard balise
Voltage should be started, it is believed that the magnetic flux that now A4 interface sends right up to starts magnetic flux phi d1, records the most portable
On transponder response time tester, the output voltage of gain control unit is for starting magnitude of voltage, and stores it in processing unit
Memorizer on, complete calibration phase.It is to be understood that, above-described embodiment is not considered as scope
Limiting, any those skilled in the art can make described processing unit obtain also without creative work under the inspiration of prior art
Storage makes A4 interface send the calibration of the output voltage (present invention is defined as starting magnitude of voltage) starting magnetic flux phi d1
Mode, all within protection scope of the present invention.
The startup magnitude of voltage that described processing unit makes A4 interface send startup magnetic flux phi d1 in calibration phase storage (is i.e. increasing
The output voltage of benefit control unit is when reaching described startup magnitude of voltage, and the magnetic flux of the radio-frequency (RF) energy sent at A4 interface is for starting
Magnetic flux phi d1, in other words, starting magnitude of voltage is the threshold value that can activate transponder)；Described processing unit is measuring rank
The output voltage of section Real-time Collection gain control unit, compares described output voltage with described startup magnitude of voltage；Institute
Stating output voltage when just having reached described startup magnitude of voltage, this moment of described timer record is transponder Startup time t1, represents
The radio-frequency (RF) energy sent by A4 interface at this transponder Startup time t1 has startup magnetic flux phi d1, makes tested transponder open
Beginning work, the most described transponder Startup time t1 represents the moment that tested transponder is started working.
Described power amplifier unit, in order to carry out power amplification to the standard traffic energy signal of modulation and to send it to A4 interface.
Described A4 interface, by electromagnetic coupled mode using the modulation standard communication energy signal of the power amplification received as swashing
Send out energy to emission.
Described A1 interface, the code stream modulated signal sent in order to receive tested transponder (can be that FSK and/or PSK adjusts
Signal processed, embodiments of the invention explain with the fsk modulated signal meeting " specification 036 ", but should be with this modulation methods
Formula limits the scope of the invention), and described code stream modulated signal is sent to described filter amplification circuit.
The described code stream modulated signal received is filtered, amplifies by described filter amplification circuit, is then believed by filter and amplification
Number it is sent to demodulating unit.
The filter and amplification signal received is demodulated into the base band code stream of the square wave corresponding to 1,0 digital signal by described demodulating unit
(base band code stream as shown in Figure 3), and is sent to described code stream reception unit by also referred to as source code flow.
Described code stream receives the base band code stream that receives of unit storage, and described code stream reception unit is receiving the of base band code stream
While one code element, send receipts code signal to described processing unit.Code stream modulated signal is actually received due to A1 interface
The coil of antenna, owing to always having electromagnetic field in environment, therefore A1 interface can persistently receive the electromagnetism of periphery electromagnetic field and does
Disturb signal, as long as the circuit receiving signal end therefore opening the portable transponder response time tester of the present invention (is i.e. filtered
Ripple amplifying circuit, demodulating unit, code stream receive unit, decoding unit is connected and all opens), decoding unit will receive A1
The signal that interface sends.A1 interface start simply to receive noise signal (i.e. code stream receive that unit has just received first
Individual base band code stream effectively comes from the noise signal received when A1 interface is just started working), the most just can receive transponder
The fsk modulated signal sent, therefore can not just start the time receiving signal as corresponding to vehicle-mounted BTM days using A1 interface
Line receives the reception time of the fsk modulated signal that tested transponder sends, and can only translate correct transmission at decoding unit
Just can determine that during message that these transmission messages translated are the fsk modulated signals that tested transponder sends.But A1 interface
The code stream modulated signal received is sent to decoding unit and amplifying circuit, demodulating unit, code stream to receive unit after filtering
Deng circuit, and these circuit need the process of code stream modulated signal to consume the regular hour (i.e. in Fig. 2 when starting to receive code
Carve t2), and decoding unit is also required to the time to the decoding of code stream modulated signal, as shown in " decoding " progress bar of Fig. 2, institute
The A1 interface first frame to tested transponder is cannot function as with the decoding unit moment when translating the first correct message of frame
The moment of fsk modulated signal, but have a time delay.Therefore according to the outgoing message response time of above-mentioned transponder
Definition (from the beginning of transponder receives the startup magnetic flux that energy is Φ d1 that vehicle-mounted BTM antenna sends, to vehicle-mounted BTM
Time till the fsk modulated signal of the 4.23MHz that antenna receives transponder output, see the 5.2.2.9 of " specification 036 "
Joint), it is impossible to moment when directly translating the first correct message of frame with decoding unit deducts the magnetic flux of A4 interface transmission and reaches to open
The transponder Startup time t1 of dynamic magnetic flux phi d1 is as the outgoing message response time of transponder.Described transmission message is a string
Binary number (such as 1023 bit), each binary number of transmission message is referred to as code element, each binary system
Number has a position sequence number in order.
Described processing unit is when receiving described receipts code signal, and this moment of described timer record is for starting to receive code moment t2.
Described decoding unit, in order to be decoded into transmission message by the described base band code stream received；Translating the first correct message of frame
Time, position sequence number n of the described first correct message of frame is issued described processing unit.In order to accurately know that A1 interface is to tested
In the moment of the code stream modulated signal that transponder sends, the present invention make use of the feature of base band code stream self to be calculated dexterously should
Answer the outgoing message response time of device.As shown in Figure 4, each binary element has a sequence number to base band code stream, and at base
It is that order arranges and increases successively with position sequence number in code stream, and each code element of base band code stream has fixing code element week
Phase T, described code-element period saves definition according to the 5.2.2.2.3 of " specification 036 ", and code-element period T is mean data rate
Inverse, and the mean data rate of specification 036 regulation is 564.48kbit/s, i.e. code-element period T is 1/564.48 (kbit/s)
≈1.77μs.Thus method, it may not be necessary to measure the code stream modulated signal that A1 interface sends to tested transponder in real time
Moment, and by position sequence number n (that is, total code that decoding unit processes from starting to receive code moment t2 of the first correct message of frame
The product of the code-element period of unit number n) and every bit symbols calculates the time of " source code flow reception " progress bar learnt in Fig. 2
The most first frame correct message decoding time Tr of length.
Described code stream receives unit and receives the base band code stream in the setting time, and as shown in Figure 5 a, code stream receives unit as a list
To, single pass " sightseeing gallery ", the base band code stream of transmission message is as inner the most current at " sightseeing gallery "
Visitor, each " visitor " (i.e. code element) has the position sequence number sequentially increased successively.Described base band code stream can store more than one
The figure place of frame message (such as sets the base band code stream receiving 20 frame messages, if each frame message is 1023,20 frame messages
The total time of transmission is=1023 frame × 1.77, bit symbols × 20 μ s ≈ 36ms, then the time that setting A1 interface is opened is the most above-mentioned
" setting the time " is 36ms, then the message data received just is about 20 frame message lengths).Decoding unit is from code stream
Receiving unit and receive transmission message, code stream receives unit and enters decoding unit from right to left, as shown in Figure 5 a；Decoding unit is first
First the first frame message received is decoded, set the mobile figure place of sliding window along described base band code stream, if the first frame
Message decoding unsuccessful (owing to being all the environment noise that arrives of A1 interface when starting, generally mess code, logical when therefore starting
Often decoding is unsuccessful), then mobile figure place (Fig. 5 a, the figure of described sliding window is moved in a direction along base band code stream every time
5b moving for transmission message right-to-left, if setting the mobile figure place of sliding window as 1, being then equivalent in decoding unit
Transmission message be moved to the left 1 every time), (the position serial number of a most decoded frame message is from from left in decoding the most again
The 2nd be arranged in order to the right is to the 1024th), until translating the first correct message of frame (to assume the first correct message of frame such as Fig. 5 b
Shown in, then the position serial number of the correct message of first frame in decoding unit is from n to " n+1023 ")；If never translating correct
Message, then all base band code streams in the described setting time can all have been translated by decoding unit.If translating the first correct message of frame,
Then the mobile total bit of sliding window is exactly that position sequence number n of the first correct message of frame is (if the mobile figure place of described sliding window is 1
Position, moves 10 times, then the mobile total bit of sliding window is exactly 10, and position sequence number n of the corresponding first correct message of frame is also
It is 10；If the mobile figure place of described sliding window is 2, move 10 times, then the mobile total bit of sliding window is exactly
20, position sequence number n of the corresponding first correct message of frame is also 20), send it to memory element；If base band code stream is all translated
Do not translate a correct message of frame yet after complete, then send timeout signal " Time out ".
Owing to every frame message all includes that (in such as above-described embodiment, a frame message includes 1023 bits to multidigit code element, i.e.
At least 1023 bit symbols), in order to more accurately obtain the outgoing message response time of transponder, as one of the present invention
Preferred embodiment, position sequence number n of the first correct message of frame described in the position serial number of the first code element that can choose the first correct message of frame.
That bit symbols the most decoded in the first code element of one frame message i.e. this frame message.
Described processing unit is receiving position sequence number n of the described first correct message of frame (or the correct message of frame as above, first
After the position sequence number n) of the first code element, obtaining first frame correct message decoding time Tr=n × T, wherein T is code-element period, is
Refer to the time span of 1 bit symbols (or claiming data bit).
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, the position of the first correct message of frame
After sequence number n, according to the relation of t1, t2, Trsp, Tr of Fig. 2, it is calculated the outgoing message response time of transponder
Trsp=Tr-(t1-t2), and the outgoing message response time Trsp of described transponder is shown to described display module and/or
Store in described memorizer.
Another embodiment of the invention, can use different from decoding unit in above-described embodiment and code stream reception unit
Mode solves problem to be solved by this invention, and reaches effect same as the previously described embodiments.
Due to the present embodiment be only to decoding unit, code stream receive unit and and processing unit between signal relation use with
The mode that above-described embodiment is different, therefore, in order to save space, mainly explains part unlike the embodiments above,
The present embodiment is not made statement part or has stated part same as the previously described embodiments, with reference to above-described embodiment.
The portable transponder response time tester of the present embodiment, as shown in Figure 1a, including processing unit, signal generator,
Gain control unit, power amplifier unit, A4 interface；A1 interface, filter amplification circuit, demodulating unit, code stream reception unit,
Decoding unit；Power module, display module.The annexation of each assembly is same as the previously described embodiments (be can be found in and comparison diagram
1a and Fig. 1 b).
Described processing unit includes timer, arithmetical unit, memorizer.Described timer, arithmetical unit, memorizer effect with
Above-described embodiment is identical.Described processing unit is connected with gain control unit, power amplifier unit, A4 interfacing order；Described process
Unit is also connected with decoding unit, code stream reception unit, demodulating unit, filter amplification circuit, A1 interfacing order；Described place
Reason unit also receives unit with code stream and is connected.Described processing unit sends activated with energy signal to gain control unit, simultaneously by
Described timer record starts the moment of timing.The annexation of processing unit and other assembly and function and above-mentioned enforcement herein
Example is identical.
The annexation of described gain control unit and act on same as the previously described embodiments.
Described processing unit makes A4 interface send the startup magnitude of voltage of startup magnetic flux phi d1 in calibration phase storage；Described place
Reason unit is at the output voltage of measuring phases Real-time Collection gain control unit, by described output voltage and described startup magnitude of voltage
Compare；When described output voltage has just reached described startup magnitude of voltage, this moment of described timer record is that transponder opens
Dynamic moment t1.The effect of processing unit is same as the previously described embodiments herein.
The effect of described power amplifier unit is same as the previously described embodiments.
Described A4 interface, A1 interface, the annexation of filter amplification circuit, act on same as the previously described embodiments, the most not
Repeat.
The effect of described demodulating unit is same as the previously described embodiments.
The present embodiment essentially consists in the difference of above-described embodiment: described code stream receives the base band code stream that unit storage receives,
And record position sequence number m of base band code stream on code stream reception unit.
Described code stream reception unit, while receiving first code element of base band code stream, sends receipts code to described processing unit
Signal；Described processing unit is when receiving described receipts code signal, and this moment of described timer record is for starting to receive code moment t2.
The present embodiment also resides in the main distinction of above-described embodiment: described decoding unit, in order to the described base band that will receive
Code stream is decoded into transmission message；When translating the first correct message of frame, send correct decoding mode bit to processing unit, such as,
As shown in Figure 1a, representing decoded state position, the non-correct decoding of flag=0 interval scale with flag position, flag=1 interval scale is correctly translated
Code；When correctly translating first frame message, flag position, by " 0 " change " 1 ", is now sent correctly to processing unit by decoding unit
Decoded state position i.e. flag=1.Meanwhile, decoding unit is closed, and should close amplifier power supply, no longer launches radio-frequency (RF) energy.
Described processing unit after receive the described correct decoding mode bit of decoding unit, obtains described code stream and receives unit now
Position sequence number m (as shown in Figure 5 b), by institute's rheme sequence number m deduct a frame message length N (situation as shown in Figure 5 b,
One frame message length N=1023 position), position sequence number n obtaining the first correct message of frame (is i.e. moved into decoding single in Fig. 5 b
The position sequence number of the unit leftmost side), thus obtain first frame correct message decoding time Tr=n × T, wherein T is code-element period (this
Tr and T at place is same as the previously described embodiments).The situation of Fig. 5 b is considered as the decoding unit by Fig. 5 a and code stream receives single
Moving (n-1) bit symbols the most by turn has the most successfully translated the result of the first correct message of frame all simultaneously in unit.
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, first frame correct message decoding
After time Tr, it is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder, and by described transponder
Outgoing message response time Trsp be shown to described display module and/or storage in described memorizer.Herein with above-mentioned enforcement
Example is identical.
Preferably, position sequence number n of the described first correct message of frame is the position sequence number of the first code element of the first correct message of frame, i.e. such as figure
N shown in 5b.Owing to the code-element period T=1.77 μ s time is the shortest, therefore can essentially select in the correct message of this frame
A certain position and be not necessarily first position sequence number as the first correct message of frame, the most should not first with the first correct message of frame
The present invention is restricted by position sequence number, and the careless position sequence number in the N bit symbols of the i.e. first correct message of frame all can be as head
The position sequence number of the correct message of frame.
Present invention also offers a kind of portable transponder response time method of testing, including calibration phase and test phase；
At calibration phase, the memorizer record of above-mentioned portable transponder response time tester and A4 interface send startup magnetic
The corresponding output voltage of flux phi d1 is for starting magnitude of voltage.
As a preferred embodiment, at described calibration phase, first send to a Standard balise with standard radio frequency energy source
Having the radio-frequency (RF) energy starting magnetic flux phi d1, the standard sensing that record now induces on described Standard balise starts
Voltage；Then replace described standard radio frequency energy source to described standard with the portable transponder response time tester of the present invention
Transponder sends radio-frequency (RF) energy, adjusts the size of radio-frequency (RF) energy, makes to induce described standard sensing on described Standard balise
Start voltage, it is believed that the magnetic flux that now A4 interface sends right up to starts magnetic flux phi d1, records the most described portable
The output voltage of the gain control unit of formula transponder response time tester is for starting magnitude of voltage, and it is single to store it in process
On the memorizer of unit.
Comprise the steps: at test phase
Described processing unit sends activated with energy signal to gain control unit, and record starts the moment of timing simultaneously, is designated as t=0
Moment, as shown in Figure 2.
The output voltage of Real-time Collection gain control unit, characterizes magnetic flux by the output voltage of gain control unit；And
Described output voltage is compared with described startup magnitude of voltage；When described output voltage has just reached described startup magnitude of voltage,
Recording this moment is transponder Startup time t1.
Described code stream reception unit, when receiving first code element of base band code stream, records this moment for starting to receive code moment t2；
Described gain control unit is according to the activated with energy signal of processing unit, modulation standard communication energy signal (modulation standard
The wave amplitude of communication energy signal), and send it to power amplifier unit, thus adjust A4 interface and send radio-frequency (RF) energy.
Until described A4 interface send out reach start magnetic flux phi d1 radio-frequency (RF) energy activate tested transponder, tested should
Answer device and receive described radio-frequency (RF) energy, transponder outgoing message is sent out in the way of code stream modulated signal.
The code stream modulated signal (modulated signal of such as FSK and/or PSK) that the described tested transponder of A1 interface sends,
The filtering of amplifying circuit, amplification after filtering, more demodulated unit is demodulated into the square wave corresponding to 1,0 digital signal
Base band code stream, as it is shown on figure 3, again through described code stream receive unit be sent to described decoding unit.
The described base band code stream received is decoded into transmission message by described decoding unit；When translating the first correct message of frame, translate
Position sequence number n of the described first correct message of frame is directly issued described processing unit (such as the situation of Fig. 1 b), or code stream by code unit
Receive unit and position sequence number m of the code element that (will be sent to decoding unit) foremost of its base band code stream is made (m-N)
Calculating after by result n, (the position sequence number n) being i.e. calculated the correct message of first frame current in decoding unit issues processing unit
(such as the situation of Fig. 1 a, can code stream receive unit or processing unit make described in the computing of (m-N), wherein N's is general
Read with an aforesaid frame message length)；Described processing unit is calculated first frame correct message decoding time Tr=n × T, its
Middle T is code-element period.
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, the position of the first correct message of frame
Sequence number n (preferably, after can being the position sequence number n) of the first code element of the first correct message of frame, according to the t1 of Fig. 2, t2,
The relation of Trsp, Tr, is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder,
The outgoing message response time of described transponder is shown to described display module and/or stores in described memorizer.
The processing unit of the present invention can be MCU (the miniature control unit of Micro Control Uint), CPLD (Complex
Programmable Logic Device CPLD) or the hardware such as FPGA, DSP, ARM；Deposit
Reservoir can be EEPROM (Electrically Erasable Programmable Read-Only Memory, electrically erasable
Programmable read only memory), FLASH, SD card, TF card, the storage medium such as USB flash disk；Enumerator can be integrated counter
Cores etc., arithmetical unit can be microcontroller etc., and filter amplifier can be the active amplification electricity of electric capacity, resistance and amplifier composition
Road；Power amplifier unit can be other electronic component that can play power amplifier effect in NPN type triode or prior art；Demodulation is single
Unit can be the hardware such as FPGA, DSP；Decoding unit can be the hardware such as FPGA, DSP；Display module can be aobvious
Show device；A1 interface and A4 interface are wire coil.
The portable transponder response time tester of the present invention, it is possible to the output report in transponder erecting bed, to transponder
Literary composition response time measures, and on the one hand avoids and transponder is dismantled back the trouble that laboratory carries out detecting；On the other hand,
In-site measurement can reflect transponder real work situation at the scene, it is to avoid by caused by environmental factors, transponder existing
Field goes wrong and cannot reappear the situation of problem after returning factory.
In a word, the foregoing is only the preferred embodiment of technical solution of the present invention, be not intended to limit the protection of the present invention
Scope.All any modification, equivalent substitution and improvement etc. made within the spirit and principles in the present invention, should be included in this
Within the protection domain of invention.
Claims (6)
1. a portable transponder response time tester, including processing unit, signal generator, gain control unit,
Power amplifier unit, A4 interface；A1 interface, filter amplification circuit, demodulating unit, code stream receive unit, decoding unit；Electricity
Source module, display module；
Described processing unit includes timer, arithmetical unit, memorizer, described timer in order to record crucial moment, described pass
The key moment includes transponder Startup time t1, starts to receive code moment t2；Calculate first frame correct message decoding time described arithmetical unit
Tr；
Described processing unit is connected with gain control unit, power amplifier unit, A4 interfacing order；Described processing unit also with decoding
Unit, code stream receive unit, demodulating unit, filter amplification circuit, the connection of A1 interfacing order；Described processing unit also with code
Stream receives unit and connects；
Described processing unit sends activated with energy signal to gain control unit, timing by described timer record simultaneously
Moment；
Described signal generator is connected with gain control unit, and sends standard traffic energy signal to gain control unit；Institute
State the gain control unit activated with energy signal according to processing unit, modulation standard communication energy signal, and send it to merit
Put unit, thus adjust A4 interface and send radio-frequency (RF) energy；
Described processing unit makes A4 interface send the startup magnitude of voltage of startup magnetic flux phi d1 in calibration phase storage；Described place
Reason unit is at the output voltage of measuring phases Real-time Collection gain control unit, by described output voltage and described startup magnitude of voltage
Compare；When described output voltage has just reached described startup magnitude of voltage, this moment of described timer record is that transponder opens
Dynamic moment t1；
Described power amplifier unit, in order to carry out power amplification to the standard traffic energy signal of modulation and to send it to A4 interface；
Described A4 interface, by electromagnetic coupled mode using the modulation standard communication energy signal of the power amplification received as swashing
Send out energy to emission；
Described A1 interface, in order to receive the code stream modulated signal that tested transponder sends, and sends described code stream modulated signal
To described filter amplification circuit；
The described code stream modulated signal received is filtered, amplifies by described filter amplification circuit, is then believed by filter and amplification
Number it is sent to demodulating unit；
The filter and amplification signal received is demodulated into base band code stream by described demodulating unit, and base band code stream is sent to described code
Stream receives unit；
Described code stream receives the base band code stream that unit storage receives, position sequence number m of record base band code stream；Described code stream receives
Unit, while receiving first code element of base band code stream, sends receipts code signal to described processing unit；
Described processing unit is when receiving described receipts code signal, and this moment of described timer record is for starting to receive code moment t2；
Described decoding unit, in order to be decoded into transmission message by the described base band code stream received；Translating the first correct message of frame
Time, send correct decoding mode bit to processing unit；
Described processing unit after receiving the described correct decoding mode bit of decoding unit, obtain described code stream receive unit this
Time position sequence number m, institute's rheme sequence number m deduct a frame message length N, obtain position sequence number n of the first correct message of frame, from
And obtain first frame correct message decoding time Tr=n × T, wherein T is code-element period；
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, first frame correct message decoding
After time Tr, it is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder, and by described transponder
Outgoing message response time Trsp be shown to described display module and/or storage in described memorizer.
2. a portable transponder response time tester, including processing unit, signal generator, gain control unit,
Power amplifier unit, A4 interface；A1 interface, filter amplification circuit, demodulating unit, code stream receive unit, decoding unit；Electricity
Source module, display module；
Described processing unit includes timer, arithmetical unit, memorizer, described timer in order to record crucial moment, described pass
The key moment includes transponder Startup time t1, starts to receive code moment t2；Calculate first frame correct message decoding time described arithmetical unit
Tr；
Described processing unit is connected with gain control unit, power amplifier unit, A4 interfacing order；Described processing unit also with decoding
Unit, code stream receive unit, demodulating unit, filter amplification circuit, the connection of A1 interfacing order；Described processing unit also with code
Stream receives unit and connects；
Described processing unit sends activated with energy signal to gain control unit, timing by described timer record simultaneously
Moment；
Described signal generator is connected with gain control unit, and sends standard traffic energy signal to gain control unit；Institute
State the gain control unit activated with energy signal according to processing unit, modulation standard communication energy signal, and send it to merit
Put unit, thus adjust A4 interface and send radio-frequency (RF) energy；
Described processing unit makes A4 interface send the startup magnitude of voltage of startup magnetic flux phi d1 in calibration phase storage；Described place
Reason unit is at the output voltage of measuring phases Real-time Collection gain control unit, by described output voltage and described startup magnitude of voltage
Compare；When described output voltage has just reached described startup magnitude of voltage, this moment of described timer record is that transponder opens
Dynamic moment t1；
Described power amplifier unit, in order to carry out power amplification to the standard traffic energy signal of modulation and to send it to A4 interface；
Described A4 interface, by electromagnetic coupled mode using the modulation standard communication energy signal of the power amplification received as swashing
Send out energy to emission；
Described A1 interface, in order to receive the code stream modulated signal that tested transponder sends, and sends described code stream modulated signal
To described filter amplification circuit；
The described code stream modulated signal received is filtered, amplifies by described filter amplification circuit, is then believed by filter and amplification
Number it is sent to demodulating unit；
The filter and amplification signal received is demodulated into base band code stream by described demodulating unit, and base band code stream is sent to described code
Stream receives unit；
Described code stream receives the base band code stream that unit storage receives；Described code stream receives unit and is receiving the of base band code stream
While one code element, send receipts code signal to described processing unit；
Described processing unit is when receiving described receipts code signal, and this moment of described timer record is for starting to receive code moment t2；
Described decoding unit, in order to be decoded into transmission message by the described base band code stream received；Translating the first correct message of frame
Time, position sequence number n of the first correct message of frame is issued described processing unit；
Described processing unit, after position sequence number n receiving the described first correct message of frame, obtains first frame correct message decoding time
Tr=n × T, wherein T is code-element period；
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, the position of the first correct message of frame
After sequence number n, it is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder, and by described transponder
Outgoing message response time Trsp be shown to described display module and/or storage in described memorizer.
Portable transponder response time tester the most according to claim 1 and 2, it is characterised in that described first frame
Position sequence number n of correct message is the position sequence number of the first code element of the first correct message of frame.
4. a portable transponder response time method of testing, including calibration phase and test phase；
At calibration phase, the memorizer record of the portable transponder response time tester that one of claims 1 to 3 is described
Send with A4 interface and start the corresponding output voltage of magnetic flux phi d1 for starting magnitude of voltage；
Comprise the steps at test phase,
Described processing unit sends activated with energy signal to gain control unit, and record starts the moment of timing simultaneously；
The output voltage of Real-time Collection gain control unit, characterizes magnetic flux by the output voltage of gain control unit；And
Described output voltage is compared with described startup magnitude of voltage；When described output voltage has just reached described startup magnitude of voltage,
Recording this moment is transponder Startup time t1；
Described code stream reception unit, when receiving first code element of base band code stream, records this moment for starting to receive code moment t2；
Described gain control unit according to the activated with energy signal of processing unit, modulation standard communication energy signal, and by it
Give power amplifier unit, thus adjust A4 interface and send radio-frequency (RF) energy；
Until described A4 interface send out reach start magnetic flux phi d1 radio-frequency (RF) energy activate tested transponder, tested should
Answer device and receive described radio-frequency (RF) energy, transponder outgoing message is sent out in the way of code stream modulated signal；
The code stream modulated signal that the described tested transponder of A1 interface sends, the filtering of amplifying circuit, amplification after filtering,
The most demodulated unit is demodulated into base band code stream, then is sent to described decoding unit through described code stream reception unit；
The described base band code stream received is decoded into transmission message by described decoding unit；When translating the first correct message of frame, will
Position sequence number n of the described first correct message of frame issues described processing unit；Described processing unit is calculated the first correct message of frame and translates
Code time Tr=n × T, wherein T is code-element period；
Described processing unit is receiving described transponder Startup time t1, is starting to receive code moment t2, the position of the first correct message of frame
After sequence number n, it is calculated outgoing message response time Trsp=Tr-(t1-t2) of transponder,
The outgoing message response time of described transponder is shown to described display module and/or stores in described memorizer.
Portable transponder response time method of testing the most according to claim 4, it is characterised in that
At described calibration phase, first send to have to a Standard balise with standard radio frequency energy source and start magnetic flux phi d1
Radio-frequency (RF) energy, the standard sensing that record now induces on described Standard balise starts voltage；Then with claim 1
Replace described standard radio frequency energy source to described Standard balise to the portable transponder response time tester one of 3 described
Send radio-frequency (RF) energy, adjust the size of radio-frequency (RF) energy, make on described Standard balise, to induce described standard sensing and start electricity
Pressure, it is believed that the magnetic flux that now A4 interface sends right up to starts magnetic flux phi d1, records the most described portable response
The output voltage of the gain control unit of device response time tester is for starting magnitude of voltage, and stores it in depositing of processing unit
On reservoir.
6. according to the portable transponder response time method of testing described in claim 4 or 5, it is characterised in that
Position sequence number n of the described first correct message of frame is the position sequence number of the first code element of the first correct message of frame.
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