CN205754860U - GSM audio test system - Google Patents
GSM audio test system Download PDFInfo
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- CN205754860U CN205754860U CN201620691636.XU CN201620691636U CN205754860U CN 205754860 U CN205754860 U CN 205754860U CN 201620691636 U CN201620691636 U CN 201620691636U CN 205754860 U CN205754860 U CN 205754860U
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Abstract
This utility model provides a kind of GSM audio test system, and including computer, main control module, circuit tester and gsm module, described gsm module includes that voice-frequency channel to be measured, described main control module include ADC unit；Described computer and described main control module and the communication connection of described circuit tester, the input of described circuit tester electrically connects with the outfan of described voice-frequency channel to be measured.GSM audio test system of the present utility model can send control instruction to main control module by computer, main control module sends the input of voice signal extremely voice-frequency channel to be measured, and the frequency of the voice signal by circuit tester acquisition outfan, the bias voltage of the input of the voice-frequency channel to be measured that computer obtains according to this frequency and ADC unit i.e. can get the distortion situation of voice-frequency channel internal amplifier to be measured.Visible, the audio-frequency test degree of accuracy utilizing test system of the present utility model to carry out gsm module is greatly improved.
Description
Technical field
This utility model relates to a kind of GSM audio test system.
Background technology
GSM (global system for mobile communications) module is the module that mobile terminal realizes that voice call is important, is coming into operation
Before gsm module need to be carried out audio-frequency test.The test mode of prior art is to hold input one section at the MIC (Mike) of gsm module
Voice, listens to, by human ear, the voice that SPK (speaker) pin from gsm module exports, and according to whether clearly judges GSM
Module is the most faulty.Visible, such test mode can only test the substantially audio-frequency function of gsm module, it is impossible to test module
Internal gain and distortion situation so that test inaccurate.It addition, take time and effort by the way of manual testing, testing efficiency
The lowest.
Utility model content
The technical problems to be solved in the utility model is to overcome in prior art, and gsm module is carried out audio-frequency test
During can not test gain and the distortion situation of inside modules so that test inaccurate defect, it is provided that a kind of GSM audio frequency is surveyed
Test system.
This utility model is to solve above-mentioned technical problem by following technical proposals:
A kind of GSM audio test system, its feature is, described GSM audio test system includes computer, master control mould
Block, circuit tester and gsm module, described gsm module includes that voice-frequency channel to be measured, described main control module include ADC (analog digital conversion
Device) unit；
Described computer and described main control module and the communication connection of described circuit tester, the input of described circuit tester is with described
The outfan electrical connection of voice-frequency channel to be measured；
Described computer is used for sending control instruction to described main control module；
Described main control module for sending the first voice signal to described audio frequency to be measured when receiving described control instruction
The input of path；The outfan of described voice-frequency channel to be measured is for output the second voice signal extremely described circuit tester；Described ten thousand
With table for obtaining the frequency of described second voice signal and described frequency being sent to described computer；
Described ADC unit is for obtaining the bias voltage of described input, and sends described bias voltage to described meter
Calculation machine.
It is preferred that described gsm module includes that some voice-frequency channels to be measured, the input of each voice-frequency channel to be measured include
MIC pin, outfan includes a SPK pin；Described main control module is provided with the 2nd SPK pin；
Described GSM audio test system also includes the first multiway analog switch, communicates to connect with described main control module；Described
First multiway analog switch includes first input end and some first outfans, and described first input end draws with described 2nd SPK
Foot electrically connects, each MIC pin and the electrical connection of one first outfan；
Described main control module is for sending described first voice signal to a MIC pin by described 2nd SPK pin；
Described GSM audio test system also includes the second multiway analog switch, communicates to connect with described main control module；Described
Second multiway analog switch includes the second outfan and some second inputs, and described second outfan is electrically connected with described circuit tester
Connect, each SPK pin and the electrical connection of one second input.
It is preferred that described gsm module also includes that Digital I/O (input/output interface) pin and/or RTC (real-time clock) draw
Foot, described ADC unit is additionally operable to obtain described digital I/O pins and/or the magnitude of voltage of described RTC pin, and by described Digital I/O
The magnitude of voltage of pin and/or described RTC pin sends to described computer.
It is preferred that described GSM audio test system also includes the 3rd multiway analog switch, with described main control module communication link
Connect；Described 3rd multiway analog switch includes the 3rd outfan and some 3rd inputs, described 3rd outfan and described ADC
Unit electrically connects, and described MIC pin, described digital I/O pins and/or described RTC pin are electrically connected with one the 3rd input respectively
Connect.
It is preferred that described computer is communicated to connect with described circuit tester by RS232 (asynchronous transmission standard interface) interface.
It is preferred that described computer is communicated to connect with described main control module by RS232 interface.
It is preferred that described computer communicates to connect with described gsm module；
Described gsm module also include PWRKEY (startup switch) pin and/or EMERGE_OFF (shutdown switch) pin and/
Or first GPIO pin, described main control module also includes the 2nd GPIO (universal input/output interface) pin, and described PWRKEY draws
Foot and/or described EMERGE_OFF pin and/or described first GPIO pin all electrically connect with described second GPIO pin.
It is preferred that described main control module and described gsm module are all located in mobile terminal.
It is preferred that described mobile terminal also includes SIM (client identification module) card and/or SD (safe digital card) card, institute
State SIM and/or described SD card all communicates to connect with described gsm module.
Positive progressive effect of the present utility model is: GSM audio test system of the present utility model may utilize master control mould
The input of block transmission voice signal extremely voice-frequency channel to be measured, and obtain the frequency of the voice signal of outfan, according to this frequency
And the bias voltage of the input of voice-frequency channel to be measured i.e. can get the distortion situation of voice-frequency channel internal amplifier to be measured.Can
Seeing, the audio-frequency test degree of accuracy utilizing test system of the present utility model to carry out gsm module is greatly improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of the GSM audio test system of this utility model one preferred embodiment.
Detailed description of the invention
Name preferred embodiment, and combine accompanying drawing and become apparent from intactly illustrating this utility model.
As it is shown in figure 1, the GSM audio test system of the present embodiment includes computer 1, main control module 2, gsm module 3 and ten thousand
With table 4, wherein gsm module 3 includes that voice-frequency channel to be measured, main control module 2 include ADC unit 22.Computer 1 and main control module 2
Communicating to connect with circuit tester 4, the input of circuit tester 4 electrically connects with the outfan of voice-frequency channel to be measured.Concrete, the present embodiment
Computer communicated to connect with circuit tester 4 by RS232 interface, computer is by RS232 interface and main control module 2 communication link
Connect.Computer 1 is used for sending control instruction (usually AT instruction) to main control module 2.Main control module 2 is for receiving control
The first voice signal (can be the sine wave of 1KHz, naturally it is also possible to be the frequency that can identify of other human ear) is sent during instruction
Input to voice-frequency channel to be measured.The outfan of voice-frequency channel to be measured is for exporting the second voice signal to circuit tester 4；General-purpose
Table 4 is for obtaining the frequency of the second voice signal and sending frequency to computer 1.ADC unit 22 is for obtaining input
Bias voltage, and bias voltage is sent to computer 1.
Thus, the bias voltage according to the frequency of the second voice signal and the input of voice-frequency channel to be measured is the most available
The distortion situation of voice-frequency channel internal amplifier to be measured.Circuit tester 4 can also obtain the amplitude of the second voice signal, thus can obtain
Know the gain situation of amplifier.Visible, utilize the test system of the present embodiment to carry out the audio-frequency test degree of accuracy of gsm module significantly
Improve.
In the present embodiment, main control module 2 and gsm module 3 are all located in mobile terminal.The audio-frequency test mode of prior art
Need to utilize external devices by voice signal input to voice-frequency channel to be measured, and the present embodiment utilizes the parts in mobile terminal
(namely main control module) sends voice signal, and therefore the test level of integrated system of the present embodiment is high and has saved device resource.Separately
Outward, if main control module being arranged to timing send the mode of the first voice signal, then the gsm module test system of the present embodiment is also
Can be automated test.
If gsm module includes some voice-frequency channels to be measured, and needs when testing each by individually testing, then
GSM audio test system also includes that the first multiway analog switch 5 and the second multiway analog switch 6, both of which lead to main control module 2
Letter connects.Concrete, the input of each voice-frequency channel to be measured includes MIC pin 31, and outfan includes a SPK pin 32.
Main control module 3 is provided with the 2nd SPK pin 21.First multiway analog switch 5 includes first input end and some first outfans, the
One input and the 2nd SPK pin 21 electrically connect, each MIC pin and a first outfan electrical connection.Second multi-channel analog
Switch 6 includes the second outfan and some second inputs, and the second outfan electrically connects with circuit tester 4, each SPK pin
Electrically connect with one second input.Tester can (now this audio frequency leads to by the voice-frequency channel of computer input needs test
Road is voice-frequency channel to be measured), main control module 2 can control the first multiway analog switch 5 and the second multichannel mould according to relevant instruction
Intend switch 6 to switch accordingly, only make the input of voice-frequency channel to be measured and the 2nd SPK pin connect, outfan and general-purpose
Table connects, and main control module is then by sending the MIC pin of the first voice signal extremely voice-frequency channel to be measured by the 2nd SPK pin.
If gsm module also includes Digital I/O interface and/or RTC interface, then the gsm module test system of the present embodiment also may be used
For testing Digital I/O interface and/or the RTC interface of gsm module.Test mode is: ADC unit obtain digital I/O pins and/or
The magnitude of voltage of RTC pin, and the magnitude of voltage of digital I/O pins and/or RTC pin is sent to computer, computer is according to acquisition
Magnitude of voltage can draw Digital I/O interface and/or RTC interface whether fault, and can alert.
Owing to MIC pin, digital I/O pins, the test of RTC pin are both needed to carry out respectively, therefore GSM audio test system
Also include the 3rd multiway analog switch 7, communicate to connect with main control module 2.3rd multiway analog switch 7 include the 3rd outfan and
Some 3rd inputs, the 3rd outfan electrically connects with ADC unit 22, and MIC pin, digital I/O pins and/or RTC pin are respectively
Electrically connect with one the 3rd input.In the present embodiment, carry out switch switching by master control module controls the 3rd multiway analog switch,
Can realize MIC pin, digital I/O pins, RTC pin are tested respectively.
If gsm module also includes PWRKEY switch and/or EMERGE_OFF switch and/or GPIO switch, then this reality
Execute example gsm module test system can be additionally used in test gsm module PWRKEY switch and/or EMERGE_OFF switch and/or
Oneth GPIO switch.Main control module also includes the second GPIO pin, PWRKEY pin and/or EMERGE_OFF pin and/or
One GPIO pin all electrically connects with the second GPIO pin.Certainly, if mobile terminal includes SIM and/or SD card, the present embodiment
Gsm module test system can also be used for test SIM 8 and/or SD card 9, SIM 8 and/or described SD card 9 all with gsm module 3
Communication connection.
Although the foregoing describing detailed description of the invention of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and protection domain of the present utility model is defined by the appended claims.Those skilled in the art
On the premise of without departing substantially from principle of the present utility model and essence, these embodiments can be made various changes or modifications,
But these changes and amendment each fall within protection domain of the present utility model.
Claims (9)
1. a GSM audio test system, it is characterised in that described GSM audio test system include computer, main control module,
Circuit tester and gsm module, described gsm module includes that voice-frequency channel to be measured, described main control module include ADC unit；
Described computer and described main control module and the communication connection of described circuit tester, the input of described circuit tester is to be measured with described
The outfan electrical connection of voice-frequency channel；
Described computer is used for sending control instruction to described main control module；
Described main control module for sending the first voice signal to described voice-frequency channel to be measured when receiving described control instruction
Input；The outfan of described voice-frequency channel to be measured is for output the second voice signal extremely described circuit tester；Described circuit tester
For obtaining the frequency of described second voice signal and described frequency being sent to described computer；
Described ADC unit is for obtaining the bias voltage of described input, and sends described bias voltage to described computer.
2. GSM audio test system as claimed in claim 1, it is characterised in that described gsm module includes some audio frequency to be measured
Path, the input of each voice-frequency channel to be measured includes MIC pin, and outfan includes a SPK pin；Described main control module sets
There is the 2nd SPK pin；
Described GSM audio test system also includes the first multiway analog switch, communicates to connect with described main control module；Described first
Multiway analog switch includes first input end and some first outfans, described first input end and described 2nd SPK pin electricity
Connect, each MIC pin and the electrical connection of one first outfan；
Described main control module is for sending described first voice signal to a MIC pin by described 2nd SPK pin；
Described GSM audio test system also includes the second multiway analog switch, communicates to connect with described main control module；Described second
Multiway analog switch includes the second outfan and some second inputs, and described second outfan electrically connects with described circuit tester,
Each SPK pin and the electrical connection of one second input.
3. GSM audio test system as claimed in claim 2, it is characterised in that described gsm module also includes digital I/O pins
And/or RTC pin, described ADC unit is additionally operable to obtain described digital I/O pins and/or the magnitude of voltage of described RTC pin, and will
The magnitude of voltage of described digital I/O pins and/or described RTC pin sends to described computer.
4. GSM audio test system as claimed in claim 3, it is characterised in that described GSM audio test system also includes the
Three multiway analog switches, communicate to connect with described main control module；If described 3rd multiway analog switch include the 3rd outfan and
Dry 3rd input, described 3rd outfan electrically connects with described ADC unit, described MIC pin, described digital I/O pins and/
Or described RTC pin electrically connects with one the 3rd input respectively.
5. GSM audio test system as claimed in claim 1, it is characterised in that described computer passes through RS232 interface and institute
State circuit tester communication connection.
6. GSM audio test system as claimed in claim 1, it is characterised in that described computer passes through RS232 interface and institute
State main control module communication connection.
7. GSM audio test system as claimed in claim 1, it is characterised in that described computer and described gsm module communication
Connect；
Described gsm module also includes PWRKEY pin and/or EMERGE_OFF pin and/or the first GPIO pin, described master control
Module also includes the second GPIO pin, described PWRKEY pin and/or described EMERGE_OFF pin and/or a described GPIO
Pin all electrically connects with described second GPIO pin.
8. the GSM audio test system as described in any one in claim 1-7, it is characterised in that described main control module and
Described gsm module is all located in mobile terminal.
9. GSM audio test system as claimed in claim 8, it is characterised in that described mobile terminal also include SIM and/
Or SD card, described SIM and/or described SD card all communicate to connect with described gsm module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620691636.XU CN205754860U (en) | 2016-07-01 | 2016-07-01 | GSM audio test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620691636.XU CN205754860U (en) | 2016-07-01 | 2016-07-01 | GSM audio test system |
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| Publication Number | Publication Date |
|---|---|
| CN205754860U true CN205754860U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620691636.XU Active CN205754860U (en) | 2016-07-01 | 2016-07-01 | GSM audio test system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112367601A (en) * | 2020-10-26 | 2021-02-12 | 北京中科泛华测控技术有限公司 | Audio test circuit, method, device, system and chip |
| CN113766410A (en) * | 2021-09-22 | 2021-12-07 | 深圳市天视通视觉有限公司 | Audio detection circuit, audio detection device and audio detection system |
-
2016
- 2016-07-01 CN CN201620691636.XU patent/CN205754860U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112367601A (en) * | 2020-10-26 | 2021-02-12 | 北京中科泛华测控技术有限公司 | Audio test circuit, method, device, system and chip |
| CN112367601B (en) * | 2020-10-26 | 2022-06-28 | 北京中科泛华测控技术有限公司 | Audio test circuit, method, device, system and chip |
| CN113766410A (en) * | 2021-09-22 | 2021-12-07 | 深圳市天视通视觉有限公司 | Audio detection circuit, audio detection device and audio detection system |
| CN113766410B (en) * | 2021-09-22 | 2023-10-17 | 深圳市天视通视觉有限公司 | Audio detection circuit, audio detection device and audio detection system |
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