CN102164057A - Device and method for automatically testing communication module - Google Patents
Device and method for automatically testing communication module Download PDFInfo
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- CN102164057A CN102164057A CN2011100663824A CN201110066382A CN102164057A CN 102164057 A CN102164057 A CN 102164057A CN 2011100663824 A CN2011100663824 A CN 2011100663824A CN 201110066382 A CN201110066382 A CN 201110066382A CN 102164057 A CN102164057 A CN 102164057A
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Abstract
The invention relates to a device for automatically testing a communication module, which comprises a test computer, a data acquisition card and a test fixture, wherein the test computer is used for operating testing software installed on the test computer, outputting test control signals or test signals to each part of the device, and acquiring and analyzing the operation result data of each part of the device for the test signals; the data acquisition card is used for connecting the test computer and the test fixture; and the test fixture is used for installing the communication module, and supplying the communication module with power and interfaces used for connecting other device. The invention also relates to a method for automatically testing communication module. The method and device for automatically testing a communication module provided by the invention have the advantages that the audio test on the communication module can be implemented without special audio test equipment.
Description
Technical field
The present invention relates to communication field, more particularly, relate to a kind of automatic testing equipment and method of testing of communication module.
Background technology
Communication module typically refers to the module that is used for bearing on the miscellaneous equipment communication function (particularly wireless communication function, for example GSM, 3G), need carry out comprehensive performance test before above-mentioned other equipment are finished or are installed in production, to guarantee the performance of product.Owing to be communication module, it comprises voice-grade channel, just sound is converted to the signal of telecommunication according to certain rules and sends maybe the signal of telecommunication that will receive and be converted to the signal circuit of sound, therefore, when above-mentioned test, need test the audio performance of communication module according to certain rules; Simultaneously because most communication modules are used for mobile device, it is mainly by powered battery, so the current drain during its shutdown is just important.But, in existing technology, all be to use special-purpose audio-frequency test equipment to test the audio performance of above-mentioned communication module usually, not only need high cost of equipment, it is consuming time also longer; In addition, its current consumption value is smaller when quitting work owing to module, uses existing method of testing also to be difficult to obtain the current consumption value of shutting down comparatively accurately.
Summary of the invention
The technical problem to be solved in the present invention is, need to use the special audio measuring equipment to measure the defective of communication module audio performance at the above-mentioned of prior art, a kind of automatic testing equipment and method of testing that does not need a kind of communication module of special audio measuring equipment is provided.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of automatic testing equipment of communication module, comprise test computer, data collecting card and test fixture; Wherein:
Test computer: be used to move testing software mounted thereto, the result data of described device each several part for the operation or the processing of described test signal gathered and analyzed to output test control signal or the test signal each several part in the described device;
Data collecting card: be used to connect described test computer and described test fixture, the audio excitation signal that described data collecting card is set described testing software by the link of setting outputs to the input of the communication module sound intermediate frequency passage that is installed on the described test fixture, and gathers the status data of the dateout and the described communication module operating state of expression of described voice-grade channel by the interface of setting;
Test fixture: be used to install described communication module, for described communication module provides power supply and and other apparatus connection interfaces.
In communication module automatic testing equipment of the present invention, described device also comprises GPIB card and programmable power supply, and described programmable power supply output is connected with described test fixture, for being installed in the communication module power supply on the described test fixture; Described GPIB card connection between described test computer and described programmable power supply control input end, be used to export described test computer to the control signal of described programmable power supply and when described test computer reads described programmable power supply output current value as data transmission channel.
In communication module automatic testing equipment of the present invention, described test fixture comprise be connected respectively on the data collecting card, be used for that the data on the described communication module are outputed to the Data Input Interface of described data collecting card and be used for the control signal input interface that control signal or test signal with described data collecting card output are input to described communication module; Described test fixture comprises that also the link that is used for described data output interface and described control signal input interface is connected to the switching circuit board on the communication module respective terminal that is installed on the described test fixture.
In communication module automatic testing equipment of the present invention, described data output interface comprises that respectively output is installed in the communication module voice-grade channel upper speaker output on the described test fixture and the loudspeaker audio output and the earpiece audio output of the signal on the earphone output.
In communication module automatic testing equipment of the present invention, described control signal input interface comprises the audio excitation signal input of the 1KHz sine wave signal that receives described data collecting card output, and described audio excitation signal input is connected with a plurality of microphone inputs on the described communication module by first selector switch that is arranged on the described switching circuit board.
In communication module automatic testing equipment of the present invention, described data collecting card comprises the bus inserted card interface that is used for being connected with the bus slot of described test computer, be used for first interface that is connected with data output interface on the described test fixture and second interface that is used for being connected with control signal input interface on the described test fixture.
The invention still further relates to a kind of communication module automatic test method, comprise the steps:
A) test computer is exported the 1KHz audio excitation signal to the microphone signal input that is installed in the communication module voice-grade channel on the described test fixture by data collecting card;
B) obtain the loud speaker output of setting quantity or the audio output signal of earphone output by data collecting card with the sample frequency of setting, and be transferred to described test computer;
C) test computer calculates the RMS and the THD value of described communication module voice-grade channel according to described audio excitation signal and the voice data that collects;
D) whether the voice-grade channel of judging described communication module according to RMS that obtains and THD value is normal.
In communication module automatic test approach of the present invention, also comprise the steps:
E) described test computer outputs a control signal to programmable power supply by the GPIB card, and the output of cutting off the electricity supply makes described communication module shutdown quit work;
F) regularly read the current output current value of described programmable power supply, and get its mean value, obtain the shutdown current value of described communication module;
G) described test computer is by described data collecting card output control signal, control the switch on the switching circuit board on the described test fixture, make that the signal output part of appointment is connected with the general I/O end of described communication module respectively on the described test fixture;
H) when described specification signal output is connected with described general input/output terminal respectively, reads the magnitude of voltage on it and be sent to described test computer.
In communication module automatic test approach of the present invention, described steps A) further comprise in:
A1) described test computer output control signal, the port of selecting described audio excitation signal to connect with the switching circuit board of crossing on the described test fixture is connected with microphone link on the described communication module;
A2) described audio excitation signal of output and certain time.
In communication module automatic test approach of the present invention, described step B) sample frequency of data collecting card is 100KHz in; Its number of samples is 5000 times.
Implement the automatic testing equipment and the method for testing of a kind of communication module of the present invention, has following beneficial effect: can and collect audio frequency by data collecting card output audio pumping signal and lead to response to above-mentioned audio excitation signal owing to operate in testing software on the test computer, and the data that collect are analyzed by test computer, and then obtain the voice-grade channel performance of communication module, so, do not need special-purpose audio-frequency test equipment just can obtain the audio-frequency test of communication module.
Description of drawings
Fig. 1 is the structural representation of automatic testing equipment among the automatic testing equipment of a kind of communication module of the present invention and the method for testing embodiment;
Fig. 2 is a test fixture interface structure schematic diagram among the described embodiment;
Fig. 3 a, Fig. 3 b and Fig. 3 c are the circuit theory diagrams of switching circuit board in the test fixture among the described embodiment;
Fig. 4 is the method flow diagram of testing audio performance among the described embodiment;
Fig. 5 is the method flow diagram of test shutdown electric current, I/O terminal voltage among the described embodiment.
Embodiment
Embodiments of the present invention is further illustrated below in conjunction with accompanying drawing.
As shown in Figure 1, in the automatic testing equipment and method of testing embodiment of a kind of communication module of the present invention, this automatic testing equipment is made up of test computer 1, data collecting card 2, test fixture 3, GPIB card 5 and programmable power supply 6, tested communication module 4 is placed on the above-mentioned test fixture 3, and the interface on the test clamp 3 is connected with programmable power supply 6 with above-mentioned data collecting card 2.Analytical test computer 1 is used to move testing software mounted thereto in the present embodiment, output test control signal or test signal are in above-mentioned data collecting card 2 or GPIB card 5, and gather and analyze the result data of tested communication module 4 for the operation or the processing of described test signal by data collecting card 2, or obtain the current value of above-mentioned programmable power supply 6 under communication module 4 shutdown situations, in the present embodiment, above-mentioned test computer 1 can also be obtained the magnitude of voltage of assigned address on the tested communication module 4 by above-mentioned data collecting card 2, so that finish the full test for tested communication module 4.
Data collecting card 2 is used to connect above-mentioned test computer 1 and above-mentioned test fixture 3, interim, data collecting card 2 is connected by the bus slot on the above-mentioned test computer 1 with test computer 1, and data collecting card 2 is connected by the interface that is separately positioned on it with test computer 1; The audio excitation signal that data collecting card 2 is set above-mentioned testing software by the link of setting outputs to the input of the communication module 4 sound intermediate frequency passages that are installed on the test fixture 3, and gathers the status data (voltage on each test point in the normally above-mentioned tested communication module 4) of the dateout and the described communication module operating state of expression of above-mentioned voice-grade channel by the interface of setting; Test fixture 3 is used for installing or placing above-mentioned tested communication module 4, and reaches and other apparatus connection interfaces for communication module 4 provides power supply.
In the present embodiment, as shown in Figure 2, above-mentioned test fixture 3 comprise be connected respectively on the data collecting card 2, be used for that the data on the communication module 4 are outputed to the data output interface 34 of data collecting card 2 and be used for the control signal input interface 33 that control signal or test signal with data collecting card 2 outputs are input to (comprising audio excitation signal) communication module 4; Be used for data output interface 34 and control signal input interface 33 are connected to switching circuit board 31 on communication module 4 respective terminal that are installed on the test fixture 3; Specifically, be exactly that data output interface 34 is connected with said switching circuit plate 31 respectively with control signal input interface 33, and switching circuit board 31 is connected with the test point that is arranged on tested communication module 4 by probe or contact chip 35, when communication module 4 is fixed on the above-mentioned test fixture 3, the included link of data output interface 34 and control signal input interface 33 just with above-mentioned communication module 4 on test point link together.In addition, in Fig. 2, also comprise a power input interface 32, this power input interface 32 is connected with the output of programmable power supply 6, for said switching circuit plate 31 and tested communication module 4 provide power supply.
In the present embodiment, above-mentioned data output interface 34 comprises that respectively output is installed in the communication module 4 voice-grade channel upper speaker outputs on the test fixture 3 and the loudspeaker audio output (not shown) and the earpiece audio output (not shown) of the signal on the earphone output.That is to say, in above-mentioned data output interface 34, it is to connect by said switching circuit plate 31 to be connected to loud speaker output test point (position that promptly connects loud speaker) on the tested communication module 4 that two links are arranged, and also has two links to be connected to earphone output test point (position that promptly connects earphone) on the tested communication module 4 by said switching circuit plate 31 in addition.The effect of these links is to obtain input owing to audio excitation signal to be added to audio signal on loud speaker or the earphone.
Simultaneously, in the present embodiment, control signal input interface 33 comprises the audio excitation signal input (not shown) of the 1KHz sine wave signal that receives data collecting card 2 outputs, and the audio excitation signal input is connected with a plurality of microphone inputs on the communication module 4 by first selector switch (not shown among Fig. 2) that is arranged on the switching circuit board 31.That is to say, in fact the audio excitation signal that is transported on the communication module 4 by data collecting card 2, control signal input interface 33 can be connected to different microphone inputs (tie point that just connects microphone) under the control of first selector switch, and above-mentioned first selector switch is the particular location of being controlled its connection by the control signal of control signal input interface 33 input equally.
In addition, in the present embodiment, data collecting card 2 has 3 connecting interfaces, one is used for being connected with test computer 1, two are used for being connected with test fixture 3, are specially the bus inserted card interface that is used for being connected with the bus slot of test computer 1, are used for first interface that is connected with data output interface 34 on the test fixture 3 and second interface that is used for being connected with control signal input interface 33 on the test fixture 3.
As previously mentioned, in the automatic testing equipment that present embodiment disclosed, this device also comprises GPIB card 5 and programmable power supply 6, programmable power supply 6 outputs are connected with test fixture 3, particularly be to be connected on the power input interface 32 of test fixture 3, for said switching circuit plate 31 is tested communication module with the communication module 4(that is installed on the test fixture 3) power supply; And GPIB card 5 is connected between the control input end of test computer 1 and programmable power supply 6, is connected with programmable power supply 6 with above-mentioned test computer 1 respectively, is used to export the control signal of 1 pair of programmable power supply 6 of test computer; Simultaneously, during consumed current value when above-mentioned test computer 1 reads 4 shutdown of above-mentioned communication module (output current value of programmable power supply 6 during communication module 4 shutdown just), as data transmission channel.
Certainly, in the present embodiment, above-mentioned test is not whole tests of making for communication module 4, in fact, in the present embodiment, by above-mentioned data output interface 34 and control signal input interface 33 can be obtained magnitudes of voltage more, expression communication module 4 operating states, also can realize the reading of voltage on the general output/output port on the communication module 4, and then judge whether this general input is working properly by above-mentioned cooperation with the variable connector on data output interface 34 and control signal input interface 33, the switching circuit board 31.These test events comprise UART, GPIO, ADC, RTC checking, audio frequency THD(harmonic distortion), audio frequency RMS, charging current test, shutdown functional test, Power On/Power Off electric current, Power ON pin voltage, Reset pin voltage, Vbat voltage, Vbackup voltage, vdd voltage, hardware, software version, MSN inspection, Power On/Power Off Pin pin function, Sleep function and Sleep testing current, Egold Internal thermistor temp check or the like.Fig. 3 a, Fig. 3 b and Fig. 3 c are the electrical schematic diagrams of switching circuit board 31 in the present embodiment, and it has clearly illustrated the formation of this switching circuit board 31, simultaneously, have shown the function that this automatic testing equipment can be realized to a certain extent.
In the present embodiment, also relate to a kind of communication module automatic test method that realizes on said apparatus, as shown in Figure 4, when above-mentioned communication module was carried out audio-frequency test, its step was as follows:
Step S41 test computer output control signal, select the pumping signal input point on the communication module: in this step, the testing software of operation output control signal on the test computer 1, be transferred on the test fixture 3 by data collecting card 2, relevant parameter to the switching circuit board on the test fixture 3 31 is configured, select the pumping signal input point on the communication module, prepare the beginning audio-frequency test.Before this, tested communication module 4 has been placed on the above-mentioned test fixture 3 and has fixed, simultaneously, may also carry out other test, so, when carrying out this step, need to postpone certain hour, be convenient under the situation of carrying out other tests, can obtain test result comparatively accurately.Be to set in advance this time of delay, for example, can be set at 4 seconds.Specifically, in this step, be actually and set above-mentioned audio excitation signal after being input to test fixture 3, which will be transported on the microphone incoming junction of communication module 4, owing in communication module 4, have a plurality of microphones, for example, may have the microphone on the earphone, therefore, above-mentioned setting is necessary.In addition, in the present embodiment, test computer 1 is also exported the gain that control signal is used to control above-mentioned selected microphone input place voice-grade channel.After finishing above-mentioned each setting.All postpone certain hour, for example, 200ms.
Step S42 imports audio excitation signal: in this step, the tested computer of audio excitation signal 1 produces, and is transferred in the communication module 4 input of chosen microphone in above-mentioned steps by data collecting card 2, and keeps certain hour.In the present embodiment, audio excitation signal is the sine wave of 1Khz, and it is held time to up to finishing data sampling.
Step S43 obtains the response data of voice-grade channel on the communication module: be imported into the microphone input of selection at above-mentioned audio excitation signal after, it will initiation reaction in above-mentioned voice-grade channel, existing to that book audio excitation signal of telling a lie just, in this step, obtain the response data of this voice-grade channel exactly.For example, having selected the input of earphone MIC as audio excitation signal, selected the output of earphone as audio signal, in this step, is exactly the tie point continuous sampling to earphone, obtains audio signal on it, that be transported to headset earpiece.In the present embodiment, adopt the sample frequency of 100Khz, continuous 5000 times continuously to the audio volume control on the tie point of that book headset earpiece of telling a lie.
Step S44 transmits response data and arrives test computer: in this step, the data of above-mentioned sampling are transported to test computer 1 by data collecting card 2, and the testing software of giving operation on test computer 1 handles.
Step S45 calculates RMS and THD: in this step, above-mentioned testing software is after receiving above-mentioned data, give testing software with it and handle, and the testing software calling functional modules, calculate the RMS(mean value of above-mentioned data) and THD(harmonic distortion).
Step S46 judges whether voice-grade channel is normal: according to the RMS(mean value that obtains) and THD(harmonic distortion) judge whether the voice-grade channel of above-mentioned selection is normal, if these values are in allowed band, above-mentioned voice-grade channel is normal, otherwise voice-grade channel is just undesired.
In above-mentioned step, pointer is tested a voice-grade channel and is judged; If there are a plurality of voice-grade channels in the said apparatus, then according to above-mentioned steps, it is just passable to repeat above-mentioned steps.
In addition, as noted earlier, in the present embodiment, the test that can realize not merely is an audio-frequency test, when shutdown testing current that carries out communication module and general input test, as shown in Figure 5, comprises the steps:
It is little range that step S51 test computer is provided with the programmable power supply current range by the GPIB card, so that measure Weak current: in this step, test computer 1 arrives above-mentioned programmable power supply 6 by GPIB card 5 transmission of control signals, the output of cutting off the electricity supply, module shutdown.
Step S52 regularly reads the current electric current of programmable power supply and is sent to test computer: when above-mentioned communication module 4 shuts down, in fact also have the micro-current of any to exist, timing is read the current electric current of programmable power supply 6 and is sent in the test computer 1 in this step.Repeatedly the results added of Ce Lianging and get its mean value just obtains the current value that shuts down.
Step S53 is restarted communication module: in this step, restart communication module 4;
Step S54 exports control signal by data collecting card, the specific data output is connected to I/O ends different on the communication module on the selection test fixture: in this step, by data collecting card 31 output control signals, this control signal is transferred to test fixture 3, with control above-mentioned data designated input with the different I/O end on the above-mentioned communication module 4.
Step S55 reads on the different I/O ends voltage respectively and is sent to test computer: in this step, when the specific data output is connected to I/O ends different on the communication module 4 on the above-mentioned test fixture 3, gather the voltage data of this input output.
At present embodiment, can also carry out other test automatically certainly, for example test starup current, after the module start, time-delay a period of time (set in the program, acquiescence is 1 second); Change the programmable power supply range so that test mA level electric current: SendCommand (" SENS:CURR:RANG MAX "); Read primary current every 50ms, read 20 times and average.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the automatic testing equipment of a communication module is characterized in that, comprises test computer, data collecting card and test fixture; Wherein:
Test computer: be used to move testing software mounted thereto, the result data of described device each several part for the operation or the processing of described test signal gathered and analyzed to output test control signal or the test signal each several part in the described device;
Data collecting card: be used to connect described test computer and described test fixture, the audio excitation signal that described data collecting card is set described testing software by the link of setting outputs to the input of the communication module sound intermediate frequency passage that is installed on the described test fixture, and gathers the status data of the dateout and the described communication module operating state of expression of described voice-grade channel by the interface of setting;
Test fixture: be used to install described communication module, for described communication module provides power supply and and other apparatus connection interfaces.
2. the automatic testing equipment of communication module according to claim 1, it is characterized in that, described device also comprises GPIB card and programmable power supply, and described programmable power supply output is connected with described test fixture, for being installed in the communication module power supply on the described test fixture; Described GPIB card connection between described test computer and described programmable power supply control input end, be used to export described test computer to the control signal of described programmable power supply and when described test computer reads described programmable power supply output current value as data transmission channel.
3. the automatic testing equipment of communication module according to claim 2, it is characterized in that, described test fixture comprise be connected respectively on the data collecting card, be used for that the data on the described communication module are outputed to the data output interface of described data collecting card and be used for the control signal input interface that control signal or test signal with described data collecting card output are input to described communication module; Described test fixture comprises that also the link that is used for described data output interface and described control signal input interface is connected to the switching circuit board on the communication module respective terminal that is installed on the described test fixture.
4. the automatic testing equipment of communication module according to claim 3, it is characterized in that described data output interface comprises that respectively output is installed in the communication module voice-grade channel upper speaker output on the described test fixture and the loudspeaker audio output and the earpiece audio output of the signal on the earphone output.
5. the automatic testing equipment of communication module according to claim 4, it is characterized in that, described control signal input interface comprises the audio excitation signal input of the 1KHz sine wave signal that receives described data collecting card output, and described audio excitation signal input is connected with a plurality of microphone inputs on the described communication module by first selector switch that is arranged on the described switching circuit board.
6. the automatic testing equipment of communication module according to claim 5, it is characterized in that described data collecting card comprises the bus inserted card interface that is used for being connected with the bus slot of described test computer, be used for first interface that is connected with data output interface on the described test fixture and second interface that is used for being connected with control signal input interface on the described test fixture.
7. on device as claimed in claim 1, realize automatic test method for one kind, it is characterized in that, comprise the steps:
A) test computer is exported the 1KHz audio excitation signal to the microphone signal input that is installed in the communication module voice-grade channel on the described test fixture by data collecting card;
B) obtain the loud speaker output of setting quantity or the audio output signal of earphone output by data collecting card with the sample frequency of setting, and be transferred to described test computer;
C) test computer calculates the RMS and the THD value of described communication module voice-grade channel according to described audio excitation signal and the voice data that collects;
D) whether the voice-grade channel of judging described communication module according to RMS that obtains and THD value is normal.
8. method according to claim 7 is characterized in that, also comprises the steps:
E) described test computer outputs a control signal to programmable power supply by the GPIB card, and the output of cutting off the electricity supply makes described communication module shutdown quit work;
F) regularly read the current output current value of described programmable power supply, and get its mean value, obtain the shutdown current value of described communication module;
G) described test computer is by described data collecting card output control signal, control the switch on the switching circuit board on the described test fixture, make that the signal output part of appointment is connected with the general I/O end of described communication module respectively on the described test fixture;
H) when described specification signal output is connected with described general input/output terminal respectively, reads the magnitude of voltage on it and be sent to described test computer.
9. method according to claim 8 is characterized in that, described steps A) in further comprise:
A1) described test computer output control signal, the port of selecting described audio excitation signal to connect with the switching circuit board of crossing on the described test fixture is connected with microphone link on the described communication module;
A2) described audio excitation signal of output and certain time.
10. method according to claim 9 is characterized in that, described step B) in the sample frequency of data collecting card be 100KHz; Its number of samples is 5000 times.
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Application publication date: 20110824 |