CN102495779B - Integrated sensor RFID (radio frequency identification device) system and mixed-mode interface performance test method thereof - Google Patents
Integrated sensor RFID (radio frequency identification device) system and mixed-mode interface performance test method thereof Download PDFInfo
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Abstract
The invention discloses an integrated sensor RFID (radio frequency identification device) system and a mixed-mode interface performance test method thereof. The method comprises the following steps of: connecting a logical analysis set to the mixed-mode interface of the integrated sensor RFID system, wherein the logical analysis set comprises an LA_Probe_E measurement line, an LA6000 logical analyzer and a host, an interface transmission signal goes through the measurement line, the logical analyzer and the host, and is decoded by upper computer software to obtain the characteristics of the interface transmission signal; checking with a signal transmission protocol to obtain the plug-and-play performance parameters of the mixed-mode interface; performing electrostatic discharge destructive test on a host interface and a sensor module interface on a mixed-mode interface bus respectively; and re-detecting the quality of independent communication and joint communication by using a plug-and-play validity test method to obtain an estimation result of the hot-plug performance of the mixed-mode interface. The performance indexes of the mixed-mode interface tested by the method mainly include plug-and-play speed, plug-and-play success rate and hot-plug success rate; and the plug-and-play validity and reliability of the mixed-mode interface can be monitored through the performance indexes, thereby conforming to the interface performance test requirements required by the development trend of the integrated intelligent sensor RFID system.
Description
Technical field
The present invention relates to intelligent sensor interface performance test field, relate in particular to a kind of integrated sensor rfid system and this system mixed mode interface performance test method.
Background technology
Along with this year Sensor Network in commercial Application, carried out energetically, based on the networked smart sensor of IEEE 1451 standards, owing to having, standardization, integrated level are high, low cost and other advantages, have obtained professional person's extensive attention.Especially be applicable to the appearance of the IEEE1451.4 mixed mode interface standard of mixed mode transmitter, network adapter (NCAP), increasing researchist and enterprise are put in the research of mixed mode interface, device fabrication field, and the various intelligent sensing equipment based on standard hybrid mode interface continues to bring out.This standard realizes sensor plug and play by unified sensor communication interfaces, supports the establishment of intelligent transducer, adopts the design philosophy of minimum memory span to realize simplification and the deployment of intelligent transducer.For embodying higher performance, guarantee the output data of sensor and high-quality and the correctness of input signal, IEEE 1451.4 standards have been used and have been compared early stage IEEE1451 standard communication interface still less, have simplified setting and the maintenance of surveying instrument system.But, different design proposals and manufacture craft have caused the intelligent sensing equipment mixed mode interface capability of different brands and model to have significant difference, and the interface capability parameter of different mixed mode interface intelligent sensing equipment institute nominals is all application demand and the method for testing based on different, between product, relatively lack a unified reference platform, this just carries out that effectively just laterally comparison and system integration application have brought difficulty mutually to the performance of like product performance.
Intelligent sensor interface capability is the basis that guarantee sensor is effectively exported data and reception signal.Validity and reliability when wherein, the key of test I EEE 1451 intelligent sensor interface capabilities is the access of test intelligent sensor.At present, still more blank to the research of IEEE 1451 intelligent sensor interface performance tests, and the research of intelligent sensing network in recent years and application upsurge, especially RFID sensing network have urgent performance requirement to the interface of intelligent sensor.Therefore, set up a kind of required interface performance test method of Integrated Intelligent Sensors rfid system development trend that meets and there is important Research Significance and perspective.
Summary of the invention
For solving the problem and blemish of above-mentioned middle existence, the invention provides a kind of integrated sensor rfid system and this system mixed mode interface performance test method.Described technical scheme is as follows:
A kind of integrated sensor rfid system mixed mode interface performance test method, comprising:
Interface performance test requirement while being articulated in 1-wire bus according to single sensor to be measured, passes through mixed mode interface and integrated sensor RFID equipment connection by single sensor to be measured;
By logic analyser, gather mixed mode interface digital signal in sensor access procedure to be measured, and this digital signal is carried out to decoding processing;
Digital data transmission agreement in decoded signal and intelligent sensor mixed mode interface standard is done to verification, obtain mixed mode interface plug and play performance parameter, and identify URN and read the command sequence in TEDS process according to 1-wire bus, judge that whether mixed mode interface plug and play is normal;
For the equipment of normally realizing mixed mode interface plug and play, signal after decoding is carried out to plug and play recognition time measurement;
The mixed mode interface that meets the test of plug and play recognition success ratio is carried out to reliability testing.
A kind of integrated sensor rfid system, described system comprises RFID reader module, integrated sensor RIFD label node module, described integrated sensor RFID label node module comprises intelligent sensor module STIM and network adapter NCAP;
Described STIM gather front end integrated the mixed mode interface of intelligent sensor, and be connected with NCAP by this mixed mode interface;
Described NCAP has incorporated wireless senser RF Transmit-Receive Unit in NCAP information processing rear end, thereby in order to support Zigbee communication to build multihop network;
Described RFID reader module comprises microprocessor, RFID reader, antenna, power supply and interface thereof; Wherein RFID reader realize to the Energy transfer of RFID label with communicate by letter; Communicating by letter between described Interface realization and rear end monitoring platform.
The beneficial effect of technical scheme provided by the invention is:
By application plug and play recognition speed, recognition success ratio, mixed mode interface is carried out to quantitative evaluation, realized the validity test to integrated sensor rfid system mixed mode interface capability;
By application hot plug success ratio, mixed mode interface is carried out to qualitative evaluation, realized the reliability testing to integrated sensor rfid system mixed mode interface capability.
Accompanying drawing explanation
Fig. 1 is integrated sensor rfid system mixed mode interface performance test method flow diagram;
Fig. 2 is integrated sensor rfid system mixed mode interface performance test schematic diagram;
Fig. 3 is integrated sensor rfid system figure;
Fig. 4 is plug and play performance test process flow diagram;
Fig. 5 is hot plug performance test process flow diagram.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail:
Referring to Fig. 1, the present embodiment provides a kind of integrated sensor rfid system mixed mode interface performance test method, said method comprising the steps of:
Interface capability when step 10 is articulated in bus according to single sensor to be measured, passes through mixed mode interface and integrated sensor RFID equipment connection by single sensor to be measured;
Interface capability when above-mentioned sensor to be measured is articulated in bus is the evaluation of carrying out on the basis of interface algorithm and interface locking equipment quantity not changing.
Its decoding processing is by digital signal is uploaded to main frame, by upper computer software, the digital signal gathering is carried out to decoding processing.
Described intelligent sensor adopts IEEE 1451.4 intelligent sensors, according to the command sequence of 1-wire bus, check that successively mixed mode digital interface identification URN and bus initialization order, bus host function request command and the bus line command read in TEDS process follow data etc., check the whether normally realization of mixed mode interface plug-and-play feature.
Adopt ESD gun respectively sensor assembly interface, 1-wire bus host interface to be carried out to contact discharge, atmospherical discharges destructive test, and adopt plug and play validity test way carry out independent communication and combine communication quality detection, test interface hot plug performance.
Before carrying out above-mentioned steps 10, also comprise: on integrated sensor rfid system mixed mode interface, connect logic analysis external member, comprising: slotted line, logic analyser, main frame, be equipped with logical signal analysis software on main frame.
Referring to Fig. 2, for the test philosophy of integrated sensor rfid system mixed mode interface performance test method, first by connect logic analysis external member on integrated sensor rfid system mixed mode interface, comprise LA_Probe_E slotted line, LA6000 logic analyser, main frame, interface signal transmission is through slotted line, logic analyser, main frame, by upper computer software decoding, obtain interface signal transmission feature, do verification with signal transfer protocol and obtain mixed mode interface plug and play performance parameter, secondly by the host interface on mixed mode interface bus and sensor assembly interface, carry out respectively esd immunity test and carry out independent communication and combine communication quality detection, obtain the hot plug Evaluation results of mixed mode interface.
Referring to Fig. 3, be integrated sensor rfid system, this system is divided into the double-layer structure of RFID reader module and integrated sensor RIFD label node module composition, and this system realizes data acquisition and the processing to bottom scene.Integrated sensor RFID label node adopts IEEE1451.4 intelligent sensor mixed mode interfacing, can be divided into intelligent sensor module (Smart Transducer Interface Module, STIM) and network adapter (Networked Capable Application Processor, NCAP), i.e. mixed mode interface bus main frame; Adopt the self-organizing network of the multi-hop of Zigbee network protocol construction based on IEEE 802.15.4 in WSN field, WSN network node (integrated sensor RFID label node module) is integrated passive RFID tags and sensor, is responsible for respectively gathering Item Information and environment parameter; Wherein, STIM gather front end integrated mixed mode interface in IEEE 1451.4, realized the intelligence expansion to traditional analog formula sensor; In addition, NCAP has incorporated wireless senser RF Transmit-Receive Unit in NCAP information processing rear end, thereby in order to support Zigbee communication to build multihop network.RFID reader module in integrated sensor RFID equipment comprises microprocessor, RFID reader, antenna, power supply and other interfaces; RFID reader can realize to the Energy transfer of RFID label with communicate by letter, other interfaces can be realized communicating by letter between the monitor supervision platform of rear end.
Referring to Fig. 4, be plug and play performance test process flow diagram, by IEEE 1451.4 intelligent sensor mixed mode interface data transmission agreements, testing process can be divided into two parts, URN identification and TEDS identification.Position and the token meaning of the mixed mode interface validity test Petri pessimistic concurrency control obtaining according to above design can be expressed as:
P1: logic analyser starts;
P2: sensor assembly accesses, waits for 5 seconds;
P3: upper computer software zlglogic has gathered echo shape;
P4: decoded;
P5a: Search ROM success;
P5b: Search ROM is unsuccessful;
P6a: check results is correct, URN value has been charged to active sheet;
P6b: check results mistake, active sheet is recorded as " check errors ";
P7a: coupling ROM success;
P7b: ROM is unsuccessful for coupling;
P8a: read application register success;
P8b: read application register unsuccessful;
P9a: coupling ROM success;
P9a: ROM is unsuccessful for coupling;
P10a: read data storer success;
P10b: read data storer is unsuccessful;
P11a: check results is 0, and verification is correct, basic TEDS, standard TEDS and user area TEDS have charged to active sheet;
P11b: the current array of form is recorded as " reading failure ";
P12: the recognition time has been charged to active sheet;
P13a: plug and play success;
P13b: plug and play failure.
Transition are implemented meaning and can be expressed as:
T1: connect mixed mode interface bus main frame, slotted line, logic analyser and main frame, enable logic analyser according to test block diagram;
T2: access sensor assembly;
T3: the waveform acquisition in 1-wire bus is returned by upper computer software zlglogic;
T4: click tools-plugin manager recalls plugin manager dialog box, chooses 1-wire bus analysis plug-in unit, and click arranges button ejection 1-wire bus encoding/decoding dialog box is set.It is 0ne-wire that signal name in dialog box is set, and speed is standard or high speed, rear click confirming button has been set and can have completed decoding;
T5: whether the beginning of inquiry decoded result successfully realizes Search ROM function, wherein first bus host sends reset pulse " RESET PULSE ", sensor assembly sends transponder pulse " PRESENCEPULSE ", then bus host sends Search ROM order " Search ROM[F0H] ", and last bus host reads in 8 byte URN successively;
T6: adopt the standard C RC method of calibration of generator polynomial x8+x5+x4+1 to carry out contrary verification to URN, wherein last byte is CRC check code, records check results;
T7: continue inquiry decoded result and whether successfully realize coupling ROM function, wherein bus host sends reset pulse " RESET PULSE ", sensor assembly sends transponder pulse " PRESENCE PULSE ", then bus host sends coupling ROM order " Match ROM[55H] ", and finally bus host sends 8 byte URN;
T8: continue inquiry decoded result and whether successfully realize and read application register function, and record measured value, wherein bus host sends reset pulse " RESET PULSE ", sensor assembly sends transponder pulse " PRESENCE PULSE ", then bus host sends and reads application register order " Read ApplicationRegister[C3H] ", bus host sends 8 bit data read start addresses again, and last bus host reads in the basic TEDS of 8 byte;
T9: continue inquiry decoded result and whether successfully realize coupling ROM function, wherein bus host sends reset pulse " RESET PULSE ", sensor assembly sends transponder pulse " PRESENCE PULSE ", then bus host sends coupling ROM order " Match ROM[55H] ", and finally bus host sends 8 byte URN;
T10: continue inquiry decoded result and whether successfully realize and read application register function, and record measured value, wherein bus host sends reset pulse " RESET PULSE ", sensor assembly sends transponder pulse " PRESENCE PULSE ", then bus host sends and reads EEPROM order " ReadMemory[0FH] ", bus host sends 8 bit data read start addresses again, last bus host reads in 32 byte datas, comprising the verification of first byte and and standard TEDS and the user area TEDS of remaining 31 bytes;
T11: TEDS data are carried out to verification and contrary check, by verification and byte and basic TEDS, standard TEDS and the each byte not-carry addition of user TEDS, record check results;
T12: decoded result is carried out to time series analysis, analyze initial time when reset pulse starts first, be the end moment that bus host reads in 32 byte EEPROM data the finish time, and the mistiming of initial time and the finish time is recorded as the recognition time;
T13: logging test results.
Devices to test is repeated to above-mentioned experiment 10 times, and the ratio that number of success is accounted for to experiment number is charged in test report form, and gets the recognition time average of all success experiments as the recognition speed of Devices to test.
Referring to Fig. 5, be hot plug performance test flow process, comprise atmospherical discharges test and contact discharge test.
Atmospherical discharges testing procedure comprises: 1., by be adjusted to ± 15KV of static gun voltage, select round end discharge head, adopt pattern air discharge; 2. by near rifle head rest sensor assembly mixed mode interface, with positive voltage, it is scanned; 3. by near rifle head rest sensor assembly interface, with negative voltage, it is scanned; 4. will be subject to the sensor assembly interface after esd immunity test to be connected and to communicate with the intact bus host interface that does not carry out esd immunity, adopt plug and play validity test method check communication quality quality; 5. the interface of mixed mode interface bus main frame is repeated to above-mentioned experiment, be connected with a sensor assembly that does not carry out esd immunity test, adopt plug and play validity test method communication check communication quality quality simultaneously; 6. tested sensor assembly is connected and is communicated with tested bus host, adopt plug and play validity test method check communication quality quality communication check communication quality quality.
Contact discharge testing procedure comprises: 1., by be adjusted to ± 8KV of static gun voltage, select tip discharge head, adopt contact discharge pattern; 2. by near rifle head rest sensor assembly interface, with positive voltage docking port electric discharge 10 times, interval 0.5s; 3. by near rifle head rest sensor assembly interface, with negative voltage docking port electric discharge 10 times, interval 0.5s; 4. sensor assembly interface is connected and is communicated with the intact bus host interface that does not carry out esd immunity test, adopt plug and play validity test method check communication quality quality; 5. bus host interface is repeated to above-mentioned experiment, be connected with a sensor assembly interface that does not carry out esd immunity test, adopt the quality of plug and play validity test method communication check communication quality simultaneously; 6. tested sensor assembly is connected with tested bus host, adopts plug and play validity test method communication check communication quality quality.
After aforesaid operations completes, if the tested equal communication of each interface is normal and communication process without extremely, show that mixed mode interface, by interface immunity experiment, has charged hot-swap capabilities; Otherwise this mixed mode interface does not possess hot-swap capabilities.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. an integrated sensor rfid system mixed mode interface performance test method, is characterized in that, described method comprises:
Interface performance test requirement while being articulated in 1-wire bus according to single sensor to be measured, passes through mixed mode interface and integrated sensor RFID equipment connection by single sensor to be measured;
By logic analyser, gather mixed mode interface digital signal in sensor access procedure to be measured, and this digital signal is carried out to decoding processing;
Digital data transmission agreement in decoded signal and intelligent sensor mixed mode interface standard is done to verification, obtain mixed mode interface plug and play performance parameter, and identify URN and read the command sequence in TEDS process according to 1-wire bus, judge that whether mixed mode interface plug and play is normal; According to the command sequence of 1-wire bus, check that successively mixed mode digital interface identification URN and bus initialization order, bus host function request command and the bus line command read in TEDS process follow data etc., check the whether normally realization of mixed mode interface plug-and-play feature;
For the equipment of normally realizing mixed mode interface plug and play, signal after decoding is carried out to plug and play recognition time measurement; Decoded result is carried out to time series analysis, analyze initial time when reset pulse starts first, be the end moment that bus host reads in 32 byte EEPROM data the finish time, and the mistiming of initial time and the finish time is recorded as the recognition time;
The mixed mode interface that meets the test of plug and play recognition success ratio is carried out to reliability testing.
2. method according to claim 1, is characterized in that, described mixed mode interface effective performance test adopts plug and play recognition speed and plug and play recognition success ratio as evaluation index; The reliability testing of mixed mode interface adopts hot plug success ratio as evaluation index.
3. method according to claim 1 and 2, is characterized in that, described mixed mode interface validity test adopts LA6000 logic analyser to extract plug and play procedural interface signal transmission, and described digital signal decoding processing is to realize by upper computer software.
4. method according to claim 1, is characterized in that, described intelligent sensor adopts IEEE1451.4 intelligent sensor.
5. method according to claim 1, it is characterized in that, described method also comprises that employing ESD gun carries out contact discharge to sensor assembly interface, 1-wire bus host interface respectively and atmospherical discharges destroys, and adopt plug and play validity test carry out independent communication and combine communication quality detection, test interface hot plug performance.
6. an integrated sensor rfid system, it is characterized in that, described system comprises RFID reader module, integrated sensor RIFD label node module, and described integrated sensor RFID label node module comprises intelligent sensor module STIM and network adapter NCAP;
Described STIM gather front end integrated the mixed mode interface of intelligent sensor, and be connected with NCAP by this mixed mode interface;
Described NCAP has incorporated wireless senser RF Transmit-Receive Unit in NCAP information processing rear end, thereby in order to support Zigbee communication to build multihop network;
Described RFID reader module comprises microprocessor, RFID reader, antenna, power supply and interface thereof; Wherein RFID reader realize to the Energy transfer of RFID label with communicate by letter; Communicating by letter between described Interface realization and rear end monitoring platform.
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| CN109655679A (en) * | 2017-10-11 | 2019-04-19 | 许继集团有限公司 | A kind of modularization high-tension apparatus plug & play sensor apparatus and system |
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