CN105812074A - Portable transponder error rate and error distribution tester and testing method - Google Patents
Portable transponder error rate and error distribution tester and testing method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
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Abstract
The invention discloses a portable transponder error rate and error distribution tester, comprising a processing unit, a demodulation unit and a power amplifier unit, wherein the processing unit is connected with the power amplifier unit and an A4 interface in sequence and sends an energy trigger signal to the power amplifier unit; and the processing unit is also connected with the demodulation unit and an A1 interface in sequence, receives baseband code stream sent by the demodulation unit and carries out error identification and statistics on the baseband code stream and displays a counted error rate and/or error distribution on a display module. The portable transponder error rate and error distribution tester disclosed by the invention is light in weight, is convenient to carry, can detect the error rate and/or error distribution of a transponder or an LEU installed on the circuit onsite, and can obtain first hand information under the influence of application environment factors, so the situation that a transponder fault cannot be reproduced when the transponder or the LEU is detached and conveyed back a factory or lab resulting from environment changes. The invention further discloses a portable transponder error rate and error distribution testing method.
Description
Technical field
The present invention relates to the dot-mode transponder of Source of Railway Communication and Signalling field train operation control system transmission system, especially a kind of portable transponder bit error rate and error code distribution detector and method of testing.
Background technology
Train operation whistle control system (CTCS-2 and CTCS-3) being applied in China's high speed passenger dedicated railway is dependent on landing ground transponder.Ground transponder (abbreviation transponder) is a kind of by the car ground information transmission technology, key position at circuit, the critical circuits data (being called message) that traffic safety is relevant are supplied to on-vehicle control apparatus, and the high-speed secure to realize automatization runs the point type equipment controlled.
The operation principle of transponder is: the various track datas (such as line length, the gradient, bend, kilometer post, commutation point etc.) on ground store by transponder；When train sails the zone of action of transponder into, vehicle-mounted BTM (the transponder transport module of train, the abbreviation of BaliseTransmissionModule) antenna radiates the energy of 27.095MHz earthward, after transponder obtains energy, immediately by the track data of its storage with the FSK mode of frequency regulation of carrier frequency 4.23M to train transmission, vehicle-mounted BTM antenna receive.After train receives the information of transponder, through amplifying, demodulating, decoding is finally realized automatically controlling car by train control system again.
Each big trunk railway and Line for Passenger Transportation it is widely used to due to transponder, if transponder occurs abnormal, light then impact driving efficiency, heavy then cause train operation accident, therefore the test request of transponder is more and more higher, to transponder means of testing, the agility of test process, convenience demand also more and more urgent.For the on-the-spot test of transponder, generally adopt transponder read and write device (also referred to as message read write line) to write message to transponder, then pass through the correctness reading the just message audit message of write.But message read write line volume is big, heavy, carry inconvenience and unit price is expensive；And be only capable of the correctness of the message of storage in transponder is tested, it is impossible to carry out detecting to many parameter characteristics (such as the bit error rate and error code distribution etc.) of transponder and judge.Once transponder itself breaks down or makes a mistake in transponder transmitting procedure, still influence whether driving efficiency and traffic safety.
The bit error rate is an important parameter of reflection transponder performance.The bit error rate refers to the ratio of the total bit number received in the abnormal bit number and this test process that in test process, test equipment receives.Bit error rate height may result in train and do not receive effective message (train needs to receive at least one complete message, namely the continuous print of the message of a frame 1023 1023 (or claiming bit) is all correct), cause obtaining the track data of storage in this transponder, consequently, it is possible to cause Train Stopping.Owing to the factor of transponder causes that train does not receive effective message, common reason is probably the hydraulic performance decline of transponder itself, install lack of standardization or surrounding (in such as periphery electromagnetic field, geology iron content, saline etc.) causes that on the impact of transponder the bit error rate is high.Test to the transponder bit error rate, current common practice is to transport transponder dismounting back laboratory to detect, and the method can not first get rid of the environmental factors impact on the transponder bit error rate before removing transponder.Still there is no portable, the transponder bit error rate can be carried out on-the-spot test equipment at present.
Error code distribution is another important parameter of reflection transponder performance.Error code distribution characterizes abnormal bit number position distribution in total bit number.Error code distribution influences whether that train is when passing through transponder, and within the set time activating transponder, vehicle-mounted BTM receives the time point of effective message of transponder, thus having influence on train to receive the actual time of effective message.Still there is no portable, the distribution of transponder error code can be carried out on-the-spot test equipment at present.
Summary of the invention
In order to solve the above-mentioned problem needing the transponder bit error rate to carry out on-the-spot test and error code distribution is tested, the invention provides a kind of portable transponder bit error rate and error code distribution detector and method of testing, it is possible to the bit error rate to transponder and error code distribution measurement at the scene that transponder breaks down.
A kind of portable transponder bit error rate and error code distribution detector, including processing unit, demodulating unit, at least one power amplifier unit, A4 interface, A1 interface, power module, display module；Described in described electric power source pair of module, processing unit, demodulating unit, power amplifier unit, display module are powered；Described display module is connected with described processing unit；
Described processing unit is connected with described power amplifier unit, A4 interfacing order；Described processing unit sends activated with energy signal to described power amplifier unit；
Described processing unit is also connected with described demodulating unit, A1 interfacing order；Described processing unit receives the base band code stream of demodulating unit transmission and it is carried out error code identification and statistics, and the bit error rate after statistics and/or error code distribution results are shown in display module；
Power amplifier unit, triggers signal in order to amplified energy and is issued A4 interface；
A4 interface, by electromagnetic coupled mode using the activated with energy signal of amplification that receives as excitation energy to emission；
A1 interface, in order to receive modulation signal, and is sent to described demodulating unit by modulation signal；
Described demodulating unit, in order to described modulation signal is demodulated into base band code stream, and is sent to described processing unit.
Preferably, described power amplifier unit is the first power amplifier unit；Also include that there is at least one second power amplifier unit having different gains from described first power amplifier unit；Described processing unit is connected with described first power amplifier unit and described second power amplifier unit respectively；Described processing unit selects a power amplifier unit, and sends activated with energy signal to selected power amplifier unit；Selected power amplifier unit is sent to A4 interface after being amplified by described activated with energy signal.
Preferably, the described portable transponder bit error rate and error code distribution detector, it is also possible to include motherboard and rf board；Described motherboard includes described processing unit；Described rf board includes described demodulating unit, power amplifier unit, A1 interface, A4 interface；Described power module powers to described motherboard and rf board.
Preferably, described motherboard can also include memory element；The bit error rate and/or error code distribution results are stored in described memory element by described processing unit.
A kind of portable transponder bit error rate and error code distribution detector, including processing unit, decoding unit, C interface, power module, display module；Described in described electric power source pair of module, processing unit, decoding unit, display module are powered；Described display module is connected with described processing unit；Described C interface receives the LEU DBPL code sent and is transferred to decoding unit；DBPL code from C interface is decoded as base band code stream by described decoding unit, and is sent to described processing unit；Described processing unit and described decoding unit, C interface are linked in sequence；Described processing unit receives the base band code stream of decoding unit transmission and it is carried out error code identification and statistics, and the bit error rate after statistics and/or error code distribution results are shown in display module.
Preferably, described processing unit carries out error code identification and refers to statistics: the base band code stream in the processing unit reception setting time, described base band stream packet is containing the figure place more than a frame message；First find the message that first frame is correct, be called first frame message；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%；Then sliding window is set along described base band code stream, many one of the length ratio one frame message length of described sliding window, the now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it is negated correct；Then, described sliding window moves one to position, end extreme direction, again contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct, repeat the above steps, until the end of sliding window is displaced to the last position of above-mentioned base band code stream；Calculate the total bit of error code, and by its with base band code stream in confess one's crime frame message first place to the last position of base band code stream total bit be used for the bit error rate；Statistics error code position distribution in base band code stream is distributed as error code.
A kind of method of testing based on the above-mentioned portable transponder bit error rate and error code distribution detector, comprises the steps:
S100: described processing unit sends activated with energy signal to described power amplifier unit；Described power amplifier unit amplifies described activated with energy signal and is issued A4 interface, and the activated with energy signal of the amplification received outwards is transmitted to tested transponder by electromagnetic coupled mode by described A4 interface as excitation energy；
S200: the modulation signal that the tested transponder of described A1 interface sends, and issue described demodulating unit, described modulation signal is demodulated into base band code stream by described demodulating unit, and sends it to described processing unit；
S300: described processing unit receives the base band code stream of demodulating unit transmission and it is carried out error code identification and statistics,
Described processing unit carries out error code identification and refers to statistics:
S310: processing unit receives the base band code stream in the setting time, and described base band stream packet is containing the figure place more than a frame message；
S320: find the message that first frame is correct, be called first frame message, perform step S330；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%；
S330: set sliding window along described base band code stream, many one of the length ratio one frame message length of described sliding window, the now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it is negated correct；
S340: described sliding window moves one to position, end extreme direction, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct
S350: repeated execution of steps S340, until the end of sliding window is displaced to the last position of above-mentioned base band code stream；
S360: calculate the total bit of error code, and by the bit error rate that is used for of the total bit of first place to the last position of base band code stream of frame message of confessing one's crime in itself and base band code stream, and/or add up error code position distribution in base band code stream as error code distribution；
S400: the bit error rate after statistics and/or error code distribution results are shown in display module.
A kind of method of testing based on the above-mentioned portable transponder bit error rate and error code distribution detector, comprises the steps:
S200: described C interface receives the LEU DBPL code sent and is transferred to decoding unit, and the DBPL code from C interface is decoded as base band code stream by described decoding unit, and is sent to described processing unit；
S300: described processing unit receives the base band code stream of decoding unit transmission and it is carried out error code identification and statistics,
Described processing unit carries out error code identification and refers to statistics:
S310: processing unit receives the base band code stream in the setting time, and described base band stream packet is containing the figure place more than a frame message；
S320: find the message that first frame is correct, be called first frame message；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%；
S330: set sliding window along described base band code stream, many one of the length ratio one frame message length of described sliding window, the now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it is negated correct；
S340: described sliding window moves one to position, end extreme direction, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct
S350: repeated execution of steps S340, until the end of sliding window is displaced to the last position of above-mentioned base band code stream；
S360: calculate the total bit of error code, and by the bit error rate that is used for of the total bit of first place to the last position of base band code stream of frame message of confessing one's crime in itself and base band code stream, and/or add up error code position distribution in base band code stream as error code distribution；
S400: the bit error rate after statistics and/or error code distribution results are shown in display module.
Beneficial effects of the present invention: the portable transponder bit error rate of the present invention and error code distribution detector, lightweight, be easy to carry, therefore can to fault transponder or LEU, or need the transponder overhauled or its bit error rate of LEU Site Detection and/or error code to be distributed, can obtain using the firsthand information under such environmental effects, thus decreasing the transponder because environment change causes or transponder fault cannot reappear when LEU dismantles back factory or laboratory situation.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 a is the structural representation of the portable transponder bit error rate of one embodiment of the invention and error code distribution detector.
Fig. 1 b is the portable transponder bit error rate of Fig. 1 a and error code distribution detector launches the schematic diagram in excitation energy process.
Fig. 1 c is the portable transponder bit error rate of Fig. 1 a and error code distribution detector receives the schematic diagram in modulation signal process.
Fig. 2 a is the schematic diagram of base band code stream.
Fig. 2 b is the schematic diagram of sliding window.
Fig. 3 a is the structural representation of the portable transponder bit error rate of one embodiment of the invention and error code distribution detector.
Fig. 3 b is the portable transponder bit error rate of Fig. 3 a and error code distribution detector launches the schematic diagram in excitation energy process.
Fig. 3 c is the portable transponder bit error rate of Fig. 3 a and error code distribution detector receives the schematic diagram in modulation signal process.
Fig. 4 is the structural representation of the portable transponder bit error rate of one embodiment of the invention and error code distribution detector.
Fig. 5 is the transponder input-output characteristic curve figure of the up-link field intensity of specification 036.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly clear and definite, below in conjunction with embodiment and accompanying drawing, the technical scheme in the embodiment of the present invention is described in further details.Obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.At this, the exemplary embodiment of the present invention and explanation thereof are mainly used in explaining the present invention, but not as a limitation of the invention.
A kind of portable transponder bit error rate and error code distribution detector, as shown in Figure 1a, including motherboard, rf board, power module, display module；Described motherboard includes processing unit；Described rf board includes demodulating unit, at least one power amplifier unit, A4 interface, A1 interface；Described electric power source pair of module motherboard, rf board, display module are powered, namely in motherboard, rf board each electronic functional module (namely processing unit, demodulating unit, power amplifier unit) power supply；Described display module is connected with described processing unit.
Described processing unit is connected with described power amplifier unit, A4 interfacing order.Launching the excitation energy stage, as shown in Figure 1 b, described processing unit sends activated with energy signal to described power amplifier unit.Power amplifier unit triggers signal in order to amplified energy and is issued A4 interface.A4 interface by electromagnetic coupled mode using the activated with energy signal of amplification that receives as excitation energy to emission.A4 interface is the interface providing power supply to transponder, it is also possible to represent the general designation of radio-frequency transmissions antenna.According to the requirement of CTCS (Train operation control system), A4 interface transponder earthward sends the excitation energy of 27.095MHz, provides energy for transponder, in order to activate transponder work.In the present invention, the excitation energy of the 27.095MHz that A4 interface sends activates the work of tested transponder, makes tested transponder send the message data of modulation.
In the modulation signal phase receiving tested transponder, as illustrated in figure 1 c, A1 interface is in order to receive described modulation signal.The message data of FSK or the PSK modulation that namely described modulation signal is sent by ground transponder；A1 interface is the interface of the modulation signal receiving transponder transmission, it is also possible to represent the general designation of message reception antenna.According to the requirement of CTCS, it be mid frequency is the carrier frequency of 4.234MHz that ground transponder sends the message data of FSK modulation, and namely the message data of this modulation receives via the A1 interface portable transponder bit error rate by mobile unit or the present invention and error code distribution detector.Described demodulating unit, in order to be demodulated into base band code stream (corresponding to the base band code stream of the square wave of 1,0 digital signal, as shown in Figure 2 a by described modulation signal；Base band code stream is also referred to as source code flow), and it is sent to described processing unit.Described processing unit is also connected with described demodulating unit, A1 interfacing order；Described processing unit receives the base band code stream of demodulating unit transmission and it is carried out error code identification and statistics, and the bit error rate after statistics and/or error code distribution results are shown in display module.
Described processing unit carries out error code identification and refers to statistics:
Processing unit receives the base band code stream (the described setting time is in order to determine the figure place of acquisition base band code stream, for instance can be set to the setting time time receiving 20 frame messages) in the setting time, and described base band stream packet is containing the figure place more than a frame message.Current domestic CTCS standard specifies that a frame message is 1023, and the base band code stream that namely application claims gathers should more than 1023；Take base band code stream in an embodiment of the invention and include 20 frame messages, then base band code stream should be about 20460 (i.e. bit or bits).First find the message that first frame is correct, the message that namely first continuous 1023 message length is all correct, be called first frame message；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%.CRC check (i.e. CRC CyclicRedundancyCheck) can be passed through and find described first frame message；In actual applications can also in strict accordance with " FFFISforEurobalise " (eurobalise pattern adaption function interface specification) subset-036 (3.0.0 version；2012.2.24 distribution) 4.3.4.1 to 4.3.4.3 of (hereinafter referred to as " specification 036 ") saves regulation and finds first frame (correctly) message.
Then sliding window, many one of the length ratio one frame message length of described sliding window are set along described base band code stream.When message length is 1023, then sliding window length is 1024, as shown in Figure 2 b.The now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window and the first (namely in above-mentioned example, the 1024th (position, end) of sliding window contrasts) with the first place of the sliding window i.e. first place of first frame message, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it negates and to correct (" negating " in binary system namely: become 1 by 0, or become 0 by 1).Then, described sliding window moves one to position, end extreme direction, repeat the above steps (namely contrasts the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct), until the end of sliding window is displaced to the last position of above-mentioned base band code stream；Calculate the total bit of error code, and by its with base band code stream in confess one's crime frame message first place to the last position of base band code stream total bit be used for the bit error rate；Statistics error code position distribution in base band code stream is distributed as error code.
Skilled artisan would appreciate that; the innovative point of the present invention does not lie in whether use motherboard, rf board; and which electronic functional module motherboard, rf board specifically comprise; therefore under the thinking of the present invention, whether use motherboard, rf board, and which electronic functional module/unit motherboard, rf board comprise all within protection scope of the present invention.
Preferably, the portable transponder bit error rate of one embodiment of the invention and error code distribution detector, as shown in Figure 3 a, including having the first power amplifier unit of different gains, the second power amplifier unit and the 3rd power amplifier unit.Described processing unit is connected with the first power amplifier unit, the second power amplifier unit, the 3rd power amplifier unit respectively.Can pass through to connect the mode of different power amplifier units at the different pins of described processing unit, enable described processing unit automatically or under external control, select some pin thus selecting the power amplifier unit being connected with this pin, and sending activated with energy signal to selected power amplifier unit.Same activated with energy signal is through the amplification of the power amplifier unit of different gains, it is thus achieved that the amplitude of excitation energy different.Processing unit can be passed through and connect multiple power amplifiers with different gains, it is achieved the detection (in such as transponder input-output characteristic curve figure and Fig. 5 of the up-link field intensity of " specification 036 " 4.2.4.4 joint, the magnetic flux of defined is the excitation energy corresponding to Φ d1, Φ d2, Φ d3) to tested transponder performance of the different excitation energies.Selected power amplifier unit is sent to A4 interface after described activated with energy signal is amplified to required excitation energy；Not selected power amplifier unit does not then work, therefore in this process also not to A4 interface output.Fig. 3 b show processing unit and chooses the situation of the first power amplifier unit.
Preferably, described motherboard can also include memory element；The bit error rate and/or error code distribution results can also be stored in described memory element by described processing unit, as shown in Fig. 1 a to 1c, Fig. 3 a to 3c.
The portable transponder bit error rate of one embodiment of the invention and error code distribution detector can also detect the bit error rate and the error code distribution of LEU LEU (also referred to as trackside electronic unit), as shown in Figure 4, including motherboard, rf board, power module, display module；Shown motherboard includes processing unit, it is shown that rf board includes decoding unit and C interface；Described in described electric power source pair of module, motherboard, rf board, display module are powered, namely to each electronic functional module (i.e. processing unit, the decoding unit) power supply in motherboard, rf board；Described display module is connected with described processing unit.
Shown C interface is message transmissions interface between LEU and active balise.The LEU cycle receives the message coming from station train control center, and it is continuously sent to active balise with DBPL (DifferentialBi-PhaseLevel) coded system.In the present invention, owing to replacing transponder to be connected the bit error rate to test LEU with LEU with the portable transponder bit error rate of the present invention and error code distribution detector and error code is distributed, therefore in the present invention, C interface is the interface between the portable transponder bit error rate of the present invention and error code distribution detector and LEU.Described C interface receives the LEU DBPL code sent and is transferred to decoding unit.DBPL code from C interface is decoded as base band code stream by described decoding unit, and is sent to described processing unit.Described processing unit and described decoding unit, C interface are linked in sequence.Described processing unit receives the base band code stream (also referred to as source code flow) of decoding unit transmission and it is carried out error code identification and statistics, the bit error rate after statistics and/or error code distribution results is shown in display module and/or is stored in memory element.
Described processing unit carries out error code identification with statistics as it has been described above, do not repeat herein.
The method of testing of a kind of portable transponder bit error rate based on above-mentioned test transponder and error code distribution detector, comprises the steps:
S100: described processing unit sends activated with energy signal to described power amplifier unit；Described power amplifier unit amplifies described activated with energy signal and is issued A4 interface, and the activated with energy signal of the amplification received outwards is transmitted to tested transponder as excitation energy by electromagnetic coupled mode by described A4 interface, as shown in Figure 1 b.
S200: the modulation signal that the tested transponder of described A1 interface sends, and issue described demodulating unit, described modulation signal is demodulated into base band code stream (the base band code stream corresponding to the square wave of 1,0 digital signal by described demodulating unit, as shown in Figure 2 a), and send it to described processing unit.
S300: described processing unit receives the base band code stream of demodulating unit transmission and it is carried out error code identification and statistics.
Described processing unit carries out error code identification and refers to statistics:
S310: processing unit receives the base band code stream in the setting time, and (the described setting time is in order to determine the figure place of acquisition base band code stream, such as the time receiving 20 frame messages can be set to the setting time), described base band stream packet is containing the figure place more than a frame message；Current domestic CTCS standard specifies that a frame message is 1023, and namely base band code stream should more than 1023；One embodiment of the invention takes base band code stream and includes 20 frame messages, then base band code stream should be about 20460 (i.e. bit or bits).
S320: find the message that first frame is correct, the message that namely first continuous 1023 message length is all correct, be called first frame message, perform step S330；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%, stops detection.CRC check (i.e. CRC CyclicRedundancyCheck) can be passed through and find described first frame message, in actual applications can also in strict accordance with " FFFISforEurobalise " (eurobalise pattern adaption function interface specification) subset-036 (3.0.0 version；2012.2.24 distribution) 4.3.4.1 to 4.3.4.3 of (hereinafter referred to as " specification 036 ") saves regulation and finds first frame (correctly) message.
S330: set sliding window, many one of the length ratio one frame message length of described sliding window along described base band code stream.When message length is 1023, then sliding window length is 1024.The now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window and the first (namely in above-mentioned example, the 1024th (position, end) of sliding window contrasts) with the first place of the sliding window i.e. first place of first frame message, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it negates and to correct (" negating " in binary system namely: become 1 by 0, or become 0 by 1).
S340: described sliding window moves one to position, end extreme direction, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct.
S350: repeated execution of steps S340, until the end of sliding window is displaced to the last position of above-mentioned base band code stream.
S360: calculate the total bit of error code, and by its with base band code stream in confess one's crime frame message first place to the last position of base band code stream total bit be used for the bit error rate；Statistics error code position distribution in base band code stream is distributed as error code.
S400: the bit error rate after statistics and/or error code distribution results are shown in display module.
The method of testing of a kind of portable transponder bit error rate based on above-mentioned test LEU and error code distribution detector, as shown in Figure 4, comprises the steps:
S200: described C interface receives the LEU DBPL code sent and is transferred to decoding unit, and the DBPL code from C interface is decoded as base band code stream by described decoding unit, and is sent to described processing unit；
S300: described processing unit receives the base band code stream of decoding unit transmission and it is carried out error code identification and statistics,
It is identical with the content of " error code identification and statistics " in the above-mentioned portable transponder bit error rate of test transponder and the method for testing of error code distribution detector with statistics that described processing unit carries out error code identification, does not repeat herein.
S400: the bit error rate after statistics and/or error code distribution results are shown in display module.
The processing unit of the present invention can be the hardware such as MCU (the miniature control unit of MicroControlUint), CPLD (ComplexProgrammableLogicDevice CPLD) or FPGA, DSP, ARM；Memory element can be the storage mediums such as EEPROM (ElectricallyErasableProgrammableRead-OnlyMemory, EEPROM), FLASH, SD card, TF card, USB flash disk；Power amplifier unit can be other electronic component that can play power amplifier effect in NPN type triode or prior art；Demodulating unit can be the hardware such as FPGA, DSP；Decoding unit can be the hardware such as FPGA, DSP.The beneficial effects of the present invention is, the portable transponder bit error rate of the present invention and error code distribution detector, lightweight, be easy to carry, therefore can to fault transponder or LEU, or need the transponder overhauled or its bit error rate of LEU Site Detection and/or error code to be distributed, can obtain using the firsthand information under such environmental effects, thus decreasing the transponder because environment change causes or transponder fault cannot reappear when LEU dismantles back factory or laboratory situation.
In a word, the foregoing is only the preferred embodiment of technical solution of the present invention, be not intended to limit protection scope of the present invention.All make within the spirit and principles in the present invention any amendment, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (8)
1. the portable transponder bit error rate and an error code distribution detector, including processing unit, demodulating unit, at least one power amplifier unit, A4 interface, A1 interface, power module, display module；Described in described electric power source pair of module, processing unit, demodulating unit, power amplifier unit, display module are powered；Described display module is connected with described processing unit；
Described processing unit is connected with described power amplifier unit, A4 interfacing order；Described processing unit sends activated with energy signal to described power amplifier unit；
Described processing unit is also connected with described demodulating unit, A1 interfacing order；Described processing unit receives the base band code stream of demodulating unit transmission and it is carried out error code identification and statistics, and the bit error rate after statistics and/or error code distribution results are shown in display module；
Power amplifier unit, triggers signal in order to amplified energy and is issued A4 interface；
A4 interface, by electromagnetic coupled mode using the activated with energy signal of amplification that receives as excitation energy to emission；
A1 interface, in order to receive modulation signal, and is sent to described demodulating unit by modulation signal；
Described demodulating unit, in order to described modulation signal is demodulated into base band code stream, and is sent to described processing unit.
2. the portable transponder bit error rate according to claim 1 and error code distribution detector, it is characterised in that described power amplifier unit is the first power amplifier unit；Also include that there is at least one second power amplifier unit having different gains from described first power amplifier unit；Described processing unit is connected with described first power amplifier unit and described second power amplifier unit respectively；Described processing unit selects a power amplifier unit, and sends activated with energy signal to selected power amplifier unit；Selected power amplifier unit is sent to A4 interface after being amplified by described activated with energy signal.
3. the portable transponder bit error rate according to claim 1 and 2 and error code distribution detector, it is characterised in that
Including motherboard and rf board；Described motherboard includes described processing unit；Described rf board includes described demodulating unit, power amplifier unit, A1 interface, A4 interface；Described power module powers to described motherboard and rf board.
4. the portable transponder bit error rate according to claim 3 and error code distribution detector, it is characterised in that described motherboard also includes memory element；The bit error rate and/or error code distribution results are stored in described memory element by described processing unit.
5. a portable transponder bit error rate and error code distribution detector, it is characterised in that
Including processing unit, decoding unit, C interface, power module, display module；Described in described electric power source pair of module, processing unit, decoding unit, display module are powered；Described display module is connected with described processing unit；
Described C interface receives the LEU DBPL code sent and is transferred to decoding unit；
DBPL code from C interface is decoded as base band code stream by described decoding unit, and is sent to described processing unit；
Described processing unit and described decoding unit, C interface are linked in sequence；Described processing unit receives the base band code stream of decoding unit transmission and it is carried out error code identification and statistics, and the bit error rate after statistics and/or error code distribution results are shown in display module.
6. according to the portable transponder bit error rate one of claim 1 to 5 Suo Shu and error code distribution detector, it is characterised in that described processing unit carries out error code identification and refers to statistics:
Processing unit receives the base band code stream in the setting time, and described base band stream packet is containing the figure place more than a frame message；First find the message that first frame is correct, be called first frame message；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%；Then sliding window is set along described base band code stream, many one of the length ratio one frame message length of described sliding window, the now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it is negated correct；Then, described sliding window moves one to position, end extreme direction, again contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct, repeat the above steps, until the end of sliding window is displaced to the last position of above-mentioned base band code stream；Calculate the total bit of error code, and by its with base band code stream in confess one's crime frame message first place to the last position of base band code stream total bit be used for the bit error rate；Statistics error code position distribution in base band code stream is distributed as error code.
7., based on a method of testing for the portable transponder bit error rate one of Claims 1-4 Suo Shu and error code distribution detector, comprise the steps:
S100: described processing unit sends activated with energy signal to described power amplifier unit；Described power amplifier unit amplifies described activated with energy signal and is issued A4 interface, and the activated with energy signal of the amplification received outwards is transmitted to tested transponder by electromagnetic coupled mode by described A4 interface as excitation energy；
S200: the modulation signal that the tested transponder of described A1 interface sends, and issue described demodulating unit, described modulation signal is demodulated into base band code stream by described demodulating unit, and sends it to described processing unit；
S300: described processing unit receives the base band code stream of demodulating unit transmission and it is carried out error code identification and statistics,
Described processing unit carries out error code identification and refers to statistics:
S310: processing unit receives the base band code stream in the setting time, and described base band stream packet is containing the figure place more than a frame message；
S320: find the message that first frame is correct, be called first frame message, perform step S330；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%；
S330: set sliding window along described base band code stream, many one of the length ratio one frame message length of described sliding window, the now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it is negated correct；
S340: described sliding window moves one to position, end extreme direction, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct
S350: repeated execution of steps S340, until the end of sliding window is displaced to the last position of above-mentioned base band code stream；
S360: calculate the total bit of error code, and by the bit error rate that is used for of the total bit of first place to the last position of base band code stream of frame message of confessing one's crime in itself and base band code stream, and/or add up error code position distribution in base band code stream as error code distribution；
S400: the bit error rate after statistics and/or error code distribution results are shown in display module.
8., based on a method of testing for the portable transponder bit error rate described in claim 5 and error code distribution detector, comprise the steps:
S200: described C interface receives the LEU DBPL code sent and is transferred to decoding unit, and the DBPL code from C interface is decoded as base band code stream by described decoding unit, and is sent to described processing unit；
S300: described processing unit receives the base band code stream of decoding unit transmission and it is carried out error code identification and statistics,
Described processing unit carries out error code identification and refers to statistics:
S310: processing unit receives the base band code stream in the setting time, and described base band stream packet is containing the figure place more than a frame message；
S320: find the message that first frame is correct, be called first frame message；If not finding a correct message of frame in whole base band code stream, then the bit error rate is directly designated as 100%；
S330: set sliding window along described base band code stream, many one of the length ratio one frame message length of described sliding window, the now first place of the first corresponding described first frame message of described sliding window, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the position in described base band code stream, the last position of now sliding window, and it is negated correct；
S340: described sliding window moves one to position, end extreme direction, contrast the last position of now sliding window with the first, if the two difference, think that now the last position of sliding window is error code, record the last position of now sliding window in the position of described base band code stream, and it is negated correct
S350: repeated execution of steps S340, until the end of sliding window is displaced to the last position of above-mentioned base band code stream；
S360: calculate the total bit of error code, and by the bit error rate that is used for of the total bit of first place to the last position of base band code stream of frame message of confessing one's crime in itself and base band code stream, and/or add up error code position distribution in base band code stream as error code distribution；
S400: the bit error rate after statistics and/or error code distribution results are shown in display module.
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