CN105553754A - Wireless communication equipment testability design method - Google Patents
Wireless communication equipment testability design method Download PDFInfo
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- CN105553754A CN105553754A CN201510893972.2A CN201510893972A CN105553754A CN 105553754 A CN105553754 A CN 105553754A CN 201510893972 A CN201510893972 A CN 201510893972A CN 105553754 A CN105553754 A CN 105553754A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/04—Processing captured monitoring data, e.g. for logfile generation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/06—Generation of reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
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Abstract
The invention discloses a design method for testability of wireless communication equipment, which comprises the following steps: the functional units of the wireless communication equipment are divided, and the wireless communication equipment comprises a voice and panel unit, a processor unit, a baseband signal processing unit, a radio frequency unit, a power amplifier unit, a filter unit and a backboard unit, wherein the voice and panel unit, the baseband signal processing unit, the radio frequency unit, the power amplifier unit and the filter unit are respectively connected with the processor unit through a backboard through respective control interfaces and data communication interfaces, and the voice and panel unit externally provides an equipment internal unit program upgrading interface and a maintenance interface. When the equipment is electrified, main faults of all units are automatically diagnosed, and when the faults occur, a test command is input through the maintenance interface, so that test signals are looped back step by step through all the internal units, and the faults among all the units are automatically diagnosed. The invention has the advantages that the hardware resources of the equipment are utilized, the testability design of the equipment is realized by adding test software, the faults in the equipment are accurately positioned, and the debugging, testing and maintenance cost of the equipment is greatly reduced.
Description
Technical field
The present invention relates to a kind of Wireless Telecom Equipment design method of testability, belong to electronic product design for testability field.
Background technology
In digital wireless communication field, communication equipment becomes increasingly complex, integrated level is more and more higher, function from strength to strength, physical dimension is more and more less, corresponding production test and maintainability test difficulty more and more higher, rely on traditional test means cannot solve this difficult problem, therefore, propose and increase Testability Design requirement while functions of the equipments design.
At present, major part product does not carry out the Testability Design planning of system, the testability of product is poor, existing method normally adopts boundary scan technique, but the method can only carry out the interconnected fault detect between chip-scale fault and such device for the device with jtag interface type, its detectability is limited, detection speed and efficiency lower; In addition, BIT technology in some equipment employing machine, special hardware testing circuit, special test bus and special detection interface is increased for the fault location of equipment and maintenance conditions at device interior, this will certainly increase equipment cost, reduce equipment dependability, can not adapt to device miniaturization development trend.
In a certain command communications system, wireless communication device features is powerful, and equipment volume is little, veneer is complicated, and equipment quantity is many.Scheduling and planning, test and Support difficulty are large, and cost is high, when complete machine or veneer break down, and cannot fast detecting and localizing faults.
Summary of the invention
The object of the invention is to solve Wireless Telecom Equipment testability ability, production link veneer and machine debugging, test inconvenience, efficiency is low, maintenance support link failure diagnosis difficulty, the shortcoming that Support cost is high, therefore propose a kind of design method of testability of Wireless Telecom Equipment from system perspective.
In order to realize foregoing invention object, technical scheme of the present invention is:
A kind of Wireless Telecom Equipment design method of testability: comprise speech and panel unit, processor unit, baseband signal processing unit, radio frequency unit, power amplifier unit, filter cell and backboard unit, wherein speech and panel unit, baseband signal processing unit, radio frequency unit, power amplifier unit, filter cell are connected with processor unit through backboard unit respectively by respective control interface, data communication interface;
Described Wireless Telecom Equipment externally provides the maintenance interface of standard, program upgrade interface and tone signal output interface: the RS232 interface of processor unit and Ethernet interface are connected to speech and panel unit, speech and panel unit are installed general connector be convenient to be connected with external general-purpose computer, RS232 maintenance interface realizes the input of test command and the display translation of test result, Ethernet interface realizes the program updates upgrading of device interior unit, radio frequency tone signal interface exports for exporting radio frequency tone signal, as the signal source that radio circuit detects;
Described Wireless Telecom Equipment power-on self-test, unit inside produces test data automatically, the test of complete cost-element internal components and device interconnect circuit thereof, judges that this unit component lost efficacy, rosin joint and short trouble, then initiatively to man-machine interface output from detection test result;
When described Wireless Telecom Equipment breaks down, enter diagnosis service mode, external general-purpose computer inputs various loopback test order by RS232 maintenance interface, speech and panel unit is allowed to produce fixed frequency tone signal, signal forms loopback step by step respectively through the voice encoding/decoding circuit of this unit, processor unit, baseband signal processing unit, radio frequency unit, power amplifier unit, filter cell, the tone signal detection module of then sending speech and panel unit back to carries out receiving and transmitting signal multilevel iudge, device interior fault is accurately located;
The inner unit printed board of described Wireless Telecom Equipment provides detailed test point, in order to more accurately locate unit chip-scale, discrete device level fault, printed board discrete has source class to provide not affect the Surface Mount circular pad of signal quality performance as test point, realize the introducing of external drive and the observation of key point signal condition on power supply signal, clock signal, reset signal, control signal and analog circuit are each.
Compared with prior art, the technique effect that the present invention can reach comprises:
1, the RS232 interface that the present invention is externally provided by panel realizes input and the test result display translation of test maintaining order as maintenance interface, realize controllability and the observability of internal element; The Ethernet interface externally provided by panel realizes program updates upgrading, avoids complete machine to dismantle and unpacks, and improves device program and upgrades upgrading efficiency; The radio frequency tone signal externally provided by panel exports as signal source input during this equipment radio frequency circuit test, without the need to external general signal generator;
2, the present invention passes through startup power on self detection, make before equipment uses at every turn, the hardware of the inner unit of automatic finishing equipment detects automatically, and report self-detection result, guarantee equipment use at every turn before fault-free or prompting user of service need to change out of order unit, ensure equipment use time integrity;
3, when equipment breaks down, make equipment enter diagnosis service mode, input loopback test order at different levels by RS232 maintenance interface of the present invention, make close beta data respectively through different hardware circuit link, accurate positioning equipment internal fault.This method is without the need to additionally increasing too many hardware circuit, based on existing hardware resource, carry out the classifying rationally of functional unit, fault detect and location is realized with the method increasing software test program, the reliability of equipment can not be reduced, improve fault detection efficiency and fault location accuracy rate, reduce factory test difficulty and Support cost;
4, the present invention also specify that the design method of testability of the inner unit printed board of Wireless Telecom Equipment, the each group of each discrete source class that has of power supply signal, clock signal, reset signal, control signal and analog circuit is all provided with the test point of the detection for external instrument, ensure controllability and the observability of unit intralamellar part important node, guarantee cell board inside fault location more accurately.
Accompanying drawing explanation
Fig. 1, internal hardware unit composition frame chart of the present invention.
Fig. 2, method for designing embodiment theory diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described, a kind of Wireless Telecom Equipment design method of testability, and its method is as follows:
According to the hardware resource of equipment, functional unit division is carried out to Wireless Telecom Equipment, comprise processor unit (1), speech and panel unit (2), baseband signal processing unit (3), radio frequency unit (4), power amplifier unit (5), filter cell (6) and backboard unit (7), wherein speech and panel unit (1), baseband signal processing unit (3), radio frequency unit (4), power amplifier unit (5), filter cell (6) is respectively by respective control interface, data communication interface is connected with processor unit (2) through backboard unit (7), wherein, the RS232 interface of processor unit (2) and Ethernet interface are connected on speech and panel unit (1), at speech and panel unit (1) upper installation general-purpose interface connector, be connected to all-purpose computer with interface cable, speech and panel unit (1) externally provide radio frequency tone signal to export simultaneously.Its testability method implementation step is as follows:
After first equipment started shooting and powered up, each unit completes power-on self-test respectively, wherein:
1) speech and panel unit (1) test this unit power supply status automatically; Tone signal generation module (101) produces fixed frequency tone signal automatically simultaneously, be looped back to tone signal detection module (102) through voice encoding/decoding circuit (103) to carry out receiving and transmitting signal and compare, automatically test voice encoding/decoding fault;
2) host CPU (201) of processor unit (2) initiatively and carry out the writing and reading of data between memory (202), automatically tests host CPU (201), memory (202) and interconnection fault therebetween; Host CPU (201) initiatively and between FPGA (203) carries out reading in and reading of data, automatically tests host CPU (201), FPGA (203) and interconnection fault therebetween;
3) DSP (303) of baseband signal processing unit (3) initiatively and carry out the writing and reading of data between memory (304), automatically tests DSP (303), memory (304) and interconnection fault therebetween; DSP(303) initiatively and between FPGA (302), carry out the writing and reading of data, automatically test DSP(303), FPGA (302) and the interconnection fault of the two; The writing and reading of data are carried out, automatic test channel CPU (301), FPGA (302) and the interconnection fault of the two between channel CPU (301) active and FPGA (302);
4) FPGA (401) of radio frequency unit (4) initiatively produces test data, transceiver (404) is delivered to by I/Q will be sent out after D/A change-over circuit (402), I/Q will be sent out in transceiver (404) inside and be looped back to receipts I/Q, then send FPGA (401) back to by A/D change-over circuit (403) to carry out transceiving data and compare, the FPGA (401) of automatic decision radio frequency unit (4), D/A change-over circuit (402), A/D change-over circuit (403), transceiver (404) and the line fault between them;
5) the power amplifier current detection circuit (5010) of power amplifier unit (5) and power amplifier temperature sensing circuit (5011) detect power amplifier electric current and power amplifier temperature respectively automatically; Carry out this cell voltage state-detection simultaneously;
6) voltage status of filter cell (6) this unit of active detecting and tuning state;
7) each unit initiatively reports self-detection result to processor unit (2), and self-detection result is shown on general purpose PC by RS232 maintenance interface, or inquires about self-detection result on the display screen of speech and panel unit (2).
When Wireless Telecom Equipment breaks down, input special maintenance command on computers, make Wireless Telecom Equipment be in diagnosis service mode, its step is as follows:
1) the tone signal generation module (101) controlling speech and panel unit (1) inside produces the tone signal of fixed frequency, tone signal is through speech coding circuit (103), loopback is formed at chip internal, then output to tone signal detection module (102) to enter receiving and transmitting signal and compare, judge whether voice encoding/decoding chip has fault;
2) input test order is continued, speech coding circuit (103) is allowed to be in normal operating conditions, the code stream of tone signal after voice encoding/decoding circuit (103) sends into the FPGA(203 of processor unit (2)), pass through FPGA(203) be looped back to the tone signal detection module (102) of speech and panel unit (1), judge whether speech and the circuit between panel unit (1) and processor unit (2) have fault;
3) order of input next stage loopback test is continued, cancel the loopback of tone signal in FPGA (203) inside, the FPGA (302) tone signal being sent into baseband signal processing unit (3) is inner, inner by tone signal loopback at FPGA (302), then carry out receiving and transmitting signal at tone signal detection module (102) to compare, whether the circuit between decision processor unit (2) and baseband signal processing unit (3) has fault;
4) order of input next stage loopback test is continued, cancel the loopback of tone signal in FPGA (302) inside, the FPGA (401) tone signal being sent into radio frequency unit (4) is inner, inner by tone signal loopback at FPGA (401), then carry out receiving and transmitting signal at tone signal detection module (102) to compare, judge whether the circuit between baseband signal processing unit (3) and radio frequency unit (4) has fault;
5) order of input next stage loopback test is continued, cancel the loopback of tone signal in FPGA (401) inside, the transceiver (404) tone signal being sent into radio frequency unit (4) is inner, inner by tone signal loopback in receipts transceiver (404), then carry out receiving and transmitting signal at tone signal detection module (102) to compare, judge whether the circuit between radio frequency unit (4) inner FPGA (401) and transceiver (404) has fault;
6) input next stage test command is continued, cancel tone signal and receive the inner loopback of transceiver (404), tone signal is sent into power amplifier unit (5), the antenna opening of filter cell (6) accesses 30dB dead load, then calculate respectively to send out coupler (405) and send out the upper performance number exported of coupler (503) in the FPGA (401) of radio frequency unit (4) and compare with the performance number of critical field, judge whether the transmitting path that the amplifying circuit (502) exporting power amplifier unit (5) to from transceiver (404) exports exists fault, receiving path direction, add between circulator (505) and protective circuit (508) and receive coupler (506), backward power size is detected, for judging whether filter cell (6) has fault by backward power testing circuit (507),
7) input next stage test command is continued, the antenna opening of the radio frequency single-tone delivery outlet of speech and panel unit (1) and (6) of filter cell is connected with RF cable, control radio frequency tone signal after filtering device unit (6) delivers to the receiving path of power amplifier unit (5), control RF switch (501) and RF switch (407) are switched to receiving path, by the receipts coupler (406) of radio frequency unit (4), Received signal strength is delivered to the performance number that transmitting-receiving power-sensing circuit (408) detects input signal, compare with the performance number of pre-value, judge the protective circuit (508) of radio frequency reception path, whether amplifying circuit (509) has fault.
When carrying out debugging single board or maintenance, in speech and panel unit (1) printed board thereof, processor unit (2) printed board, baseband signal processing unit (3) printed board, radio frequency unit (4) printed board, power amplifier unit (5) printed board, in filter cell (6) printed board and backboard unit (7) printed board, wherein each group of power supply signal, clock signal, reset signal, control signal and each discrete source class that has of analog circuit are provided with the test point detected for external instrument, external testing instrument can be introduced excitation by these test points or be observed the waveform state of circuit by these test points, then intrinsic with current test point Wave data compares, the fault of accurate judgement unit intralamellar part chip-scale.
Claims (5)
1. a Wireless Telecom Equipment design method of testability, it is characterized in that: according to the hardware resource of equipment, functional unit division is carried out to equipment, comprise speech and panel unit (1), processor unit (2), baseband signal processing unit (3), radio frequency unit (4), power amplifier unit (5), filter cell (6) and backboard unit (7), wherein speech and panel unit (1), baseband signal processing unit (3), radio frequency unit (4), power amplifier unit (5), filter cell (6) is respectively by respective control interface, data communication interface is connected with processor unit (2) through backboard unit (7).
2. speech and panel unit (1) externally provide the RS232 interface of standard as maintenance interface according to claim 1, externally provide the Ethernet interface of standard as the interface of inner unit program upgrade, the signal source input that radio frequency tone signal delivery outlet is tested as radio circuit is externally provided.
3. after Wireless Telecom Equipment powers up according to claim 1, each unit completes power-on self-test respectively, and initiatively reports self-detection result to man-machine interface, and its method is:
Speech and panel unit (1) test this unit power supply status automatically; Tone signal generation module (101) produces fixed frequency tone signal automatically simultaneously, be looped back to tone signal detection module (102) through voice encoding/decoding circuit (103) to carry out receiving and transmitting signal and compare, automatically test voice encoding/decoding fault;
Carry out the writing and reading of data between host CPU (201) active of processor unit (2) and memory (202), automatically test host CPU (201), memory (202) and interconnection fault therebetween; Host CPU (201) initiatively and between FPGA (203) carries out reading in and reading of data, automatically tests host CPU (201), FPGA (203) and interconnection fault therebetween;
Carry out the writing and reading of data between DSP (303) active of baseband signal processing unit (3) and memory (304), automatically test DSP (303), memory (304) and interconnection fault therebetween; DSP(303) initiatively and between FPGA (302), carry out the writing and reading of data, automatically test DSP(303), FPGA (302) and the interconnection fault of the two; The writing and reading of data are carried out, automatic test channel CPU (301), FPGA (302) and the interconnection fault of the two between channel CPU (301) active and FPGA (302);
The FPGA (401) of radio frequency unit (4) initiatively produces test data, transceiver (404) is delivered to by I/Q will be sent out after D/A change-over circuit (402), I/Q will be sent out in transceiver (404) inside and be looped back to receipts I/Q, then send FPGA (401) back to by A/D change-over circuit (403) to carry out transceiving data and compare, the FPGA (401) of automatic decision radio frequency unit (4), D/A change-over circuit (402), A/D change-over circuit (403), transceiver (404) and the interconnect circuit fault between them;
The power amplifier current detection circuit (5010) of power amplifier unit (5) and power amplifier temperature sensing circuit (5011) detect power amplifier electric current and power amplifier temperature respectively automatically; Carry out this cell voltage state-detection simultaneously;
The voltage status of filter cell (6) this unit of active detecting and tuning state;
Each unit initiatively reports self-detection result to processor unit (2), and self-detection result is shown on general purpose PC by RS232 maintenance interface, or inquires about self-detection result on the display screen of speech and panel unit (2).
4., according to claim 1, when Wireless Telecom Equipment breaks down, by RS232 maintenance interface access all-purpose computer, input special maintenance command on computers, make Wireless Telecom Equipment be in diagnosis service mode, its step is as follows:
The tone signal generation module (101) controlling speech and panel unit (1) inside produces the tone signal of fixed frequency, tone signal is through coding circuit (103), loopback is formed at chip internal, then output to tone signal detection module (102) to enter receiving and transmitting signal and compare, judge whether voice encoding/decoding chip has fault;
Continue input test order, voice encoding/decoding circuit (103) is allowed to be in normal operating conditions, the code stream of tone signal after speech coding circuit (103) sends into the FPGA(203 of processor unit (2)), pass through FPGA(203) be looped back to the tone signal detection module (102) of speech and panel unit (1), judge whether speech and the circuit between panel unit (1) and processor unit (2) have fault;
Continue the order of input next stage loopback test, cancel the loopback of tone signal in FPGA (203) inside, the FPGA (302) tone signal being sent into baseband signal processing unit (3) is inner, inner by tone signal loopback at FPGA (302), then carry out receiving and transmitting signal at tone signal detection module (102) to compare, whether the circuit between decision processor unit (2) and baseband signal processing unit (3) has fault;
Continue the order of input next stage loopback test, cancel the loopback of tone signal in FPGA (302) inside, the FPGA (401) tone signal being sent into radio frequency unit (4) is inner, inner by tone signal loopback at FPGA (401), then carry out receiving and transmitting signal at tone signal detection module (102) to compare, judge whether the circuit between baseband signal processing unit (3) and radio frequency unit (4) has fault;
Continue the order of input next stage loopback test, cancel the loopback of tone signal in FPGA (401) inside, the transceiver (404) tone signal being sent into radio frequency unit (4) is inner, inner by tone signal loopback in receipts transceiver (404), then carry out receiving and transmitting signal at tone signal detection module (102) to compare, judge whether the circuit between radio frequency unit (4) inner FPGA (401) and transceiver (404) has fault;
Continue input next stage test command, cancel tone signal and receive the inner loopback of transceiver (404), tone signal is sent into power amplifier unit (5), the antenna opening of filter cell (6) accesses 30dB dead load, then calculate respectively to send out coupler (405) and send out the upper performance number exported of coupler (503) in the FPGA (401) of radio frequency unit (4) and compare with the performance number of critical field, judge whether the transmitting path that the amplifying circuit (502) exporting power amplifier unit (5) to from transceiver (404) exports exists fault, receiving path direction, add between circulator (505) and protective circuit (508) and receive coupler (506), backward power size is detected, for judging whether filter cell (6) has fault by backward power testing circuit (507),
Continue input next stage test command, the antenna opening of the radio frequency single-tone delivery outlet of speech and panel unit (1) and (6) of filter cell is connected with RF cable, control radio frequency tone signal after filtering device unit (6) delivers to the receiving path of power amplifier unit (5), Received signal strength is delivered to the performance number that transmitting-receiving power-sensing circuit (408) detects input signal by the receipts coupler (406) finally by radio frequency unit (4), compare with the performance number of pre-value, judge the protective circuit (508) of radio frequency reception path, whether amplifying circuit (509) has fault.
5. according to claim 1 in speech and panel unit (1) printed board thereof, processor unit (2) printed board, baseband signal processing unit (3) printed board, radio frequency unit (4) printed board, power amplifier unit (5) printed board, in filter cell (6) printed board and backboard unit (7) printed board, wherein each group of power supply signal, clock signal, reset signal, control signal and analog circuit is each discrete has source class surface-mount type circular pad as test point, external testing instrument can be introduced excitation by these test points or be observed the waveform state of circuit by these test points, then intrinsic with current test point Wave data compares, judge the fault of unit intralamellar part chip-scale.
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