CN202167234U - Voice frequency anti-interference automated test system of vehicle-mounted multi-media system - Google Patents
Voice frequency anti-interference automated test system of vehicle-mounted multi-media system Download PDFInfo
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- CN202167234U CN202167234U CN2011201474863U CN201120147486U CN202167234U CN 202167234 U CN202167234 U CN 202167234U CN 2011201474863 U CN2011201474863 U CN 2011201474863U CN 201120147486 U CN201120147486 U CN 201120147486U CN 202167234 U CN202167234 U CN 202167234U
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Abstract
The utility model discloses a voice frequency anti-interference automated test system of a vehicle-mounted multi-media system, which comprises a controller, a program controlled circuit, a voice frequency analyzer, a signal generator and a voice frequency interferometer, wherein the controller is respectively connected with the program controlled circuit, the voice frequency analyzer and the signal generator. The voice frequency interferometer is connected with the voice frequency analyzer. The controller sends control signals to the program controlled circuit, the signal generator and the voice frequency interferometer so as to test the voice frequency of a vehicle-mounted multi-media system to be tested. The voice frequency interferometer is connected with a direct current power supply. The program controlled circuit is in line control connection with the vehicle-mounted multi-media system to be tested. The signal generator sends multi-media signals to the vehicle-mounted multi-media system to be tested through a simulation antenna head. The voice frequency anti-interference automated test system achieves automation of voice frequency anti-interference automated test of the vehicle-mounted multi-media system, is convenient to operate, greatly reduces test time, and saves manual labor.
Description
Technical field
The utility model relates to audio test device, particularly the anti-interference automatization test system of in-vehicle multi-media system audio frequency.
Background technology
The anti-interference testing principle of existing in-vehicle multi-media system audio frequency is following: at first the signal of 20Hz-20KHz being added to through amplification inputs to in-vehicle multi-media system on the in-vehicle multi-media system power supply; Test the noise level of in-vehicle multi-media system audio frequency output, thereby assess the antijamming capability of this in-vehicle multi-media system; The concrete following steps that adopt: after behind manual frequency modulation rate of signal generator and level, regulating audio analyzer again, regulating the pattern and typical problem that machine to be measured need test, go modulation; Measuring the end of machine to be measured makes an uproar; Then the audio disturbances appearance is opened, after the generation signals frequency and level in the adjusting audio analyzer, write down the level of current machine audio frequency output to be measured; After test is accomplished, continue according to said method to test other pattern again.
Existing in-vehicle multi-media system proving installation is when testing audio disturbs, and each frequency all needs manual adjustments level and affirmation, and testing efficiency is slow.
The utility model content
In order to overcome the deficiency of prior art, the utility model provides a kind of in-vehicle multi-media system audio frequency anti-interference automatization test system.
The purpose of the utility model realizes through following technical scheme: the anti-interference automatization test system of a kind of in-vehicle multi-media system audio frequency, comprise controller, programme control circut, audio analyzer, signal generator, and the audio disturbances appearance; Said controller connects said programme control circut, said audio analyzer and said signal generator respectively; Said audio disturbances appearance is connected with said audio analyzer.Said controller transmits control signal to said programme control circut, said signal generator and the said audio disturbances appearance stated, and treats measuring car and carries multimedia system and carry out audio-frequency test.
Said programme control circut receives the control signal of said controller, controls in-vehicle multi-media system to be measured and switches various playing functions, and said signal generator is used for the control signal according to said controller, sends multi-media signal to in-vehicle multi-media system to be measured; Said audio disturbances appearance is used for to in-vehicle multi-media system output audio undesired signal to be measured, and its effect is that the power end that is added to after sound signal is amplified inputs to in-vehicle multi-media system to be measured, treats measuring car and carries the multimedia system interference effect thereby play; Said audio analyzer is used to receive the audio frequency output of in-vehicle multi-media system to be measured, and the analyzing audio test result.
Preferably, the anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises the direct supply that connects said audio disturbances appearance, and the direct supply input is provided.
Preferably, the anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises line traffic control, and said programme control circut connects in-vehicle multi-media system to be measured through said line traffic control.Through using line traffic control, need not get into the needed function of controller main frame deactivation, but, practice thrift some trivial step directly through the selected function of simple key.
Preferably, the anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises the artificial antenna head, and said signal generator sends multi-media signal through the artificial antenna head to said in-vehicle multi-media system to be measured.Can simulate signals such as FM, AM, satisfy dissimilar functional test needs.
Preferably, said controller connects said programme control circut, said audio analyzer and said signal generator through USB interface respectively.
With respect to prior art; The utlity model has following advantage and effect: the utility model is realized the control to audio analyzer, signal generator, audio disturbances appearance and in-vehicle multi-media system to be measured through controller and programme control circut; Automatically accomplish test to in-vehicle multi-media system audio frequency antijamming capability; And easy to operate, shortened the test duration greatly, saved hand labor power.
Description of drawings
Fig. 1 is the structural representation of the anti-interference automatization test system of in-vehicle multi-media system audio frequency of the utility model.
Fig. 2 is the course of work synoptic diagram of the anti-interference automatization test system of in-vehicle multi-media system audio frequency of the utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done to specify further, but the embodiment of the utility model is not limited thereto.
Embodiment
As shown in Figure 1, the anti-interference automatization test system of in-vehicle multi-media system audio frequency of the utility model comprises controller, programme control circut, audio analyzer, signal generator, and the audio disturbances appearance.In the present embodiment, said controller is user PC.Said controller connects said programme control circut, said audio analyzer and said signal generator respectively; Said audio disturbances appearance is connected with said audio analyzer.Said controller transmits control signal to said programme control circut, said signal generator and the said audio disturbances appearance stated, and treats measuring car and carries multimedia system and carry out audio-frequency test.
Said programme control circut receives the control signal of said controller, controls in-vehicle multi-media system to be measured and switches various playing functions, and said signal generator is used for the control signal according to said controller, sends multi-media signal to in-vehicle multi-media system to be measured; Said audio disturbances appearance is used for to in-vehicle multi-media system output audio undesired signal to be measured, and its effect is that the power end that is added to after sound signal is amplified inputs to in-vehicle multi-media system to be measured, treats measuring car and carries the multimedia system interference effect thereby play; Said audio analyzer is used to receive the audio frequency output of in-vehicle multi-media system to be measured, and the analyzing audio test result.
In the present embodiment, the anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises the direct supply that connects said audio disturbances appearance, and the direct supply input is provided.
The anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises line traffic control, and said programme control circut connects in-vehicle multi-media system to be measured through said line traffic control.Through using line traffic control, need not get into the needed function of controller main frame deactivation, but, practice thrift some trivial step directly through the selected function of simple key.
The anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises the artificial antenna head, and said signal generator sends multi-media signal through the artificial antenna head to said in-vehicle multi-media system to be measured.Can simulate signals such as FM, AM, satisfy dissimilar functional test needs.
In one embodiment, said controller connects said programme control circut, said audio analyzer and said signal generator through USB interface respectively.
CD Player and wireless audio frequency antijamming capability with the test in-vehicle multi-media system is example below; The course of work of the in-vehicle multi-media system audio disturbances automatization test system of the utility model is described: as shown in Figure 2; In the present embodiment; Said controller is a common computer, and the anti-interference automatization test system of in-vehicle multi-media system audio frequency and the in-vehicle multi-media system to be measured of the utility model connected each port and communicate laggard capable initialization, and beginning is according to the audio frequency antijamming capability of the in-vehicle multi-media system of following steps test; Need in advance to confirm audio analyzer frequency generator and the corresponding data of output level and formulate correspondence table; Guarantee that the audio disturbances appearance is 100mVrms at 20Hz～200Hz, is the output amplitude of 500mVrms at 200Hz～20KHz that it is that 10Hz increases progressively that the frequency step of its audio-frequency generator is set at 30Hz～100Hz, and be that 100Hz increases progressively at 100Hz～1KHz; At 1KHz～10KHz is that 1KHz increases progressively, and the mode of last 20KHz changes:
(1) the programme control circut CD player of controlling in-vehicle multi-media system to be measured transfers the CD pattern to and plays the first first song;
(2) audio frequency signal amplitude of computer control audio analyzer test CD player output;
(3) programme control circut control CD player is play second first song and the repeat play;
(4) computer control audio analyzer test noise level and record data;
(5) audio-frequency generator of audio analyzer is opened, and be 20Hz with its frequency configuration, level is-20dBV;
(6) test and record audio analyser noise level at this moment;
(7) set corresponding occurrence frequency and output level step by step according to the correspondence table of audio-frequency generator occurrence frequency and output level after, the noise level of test and record audio analyser this moment;
(8) judge whether to accomplish test CD function; In this way, then carry out step (9),, then carry out step (7,8) again as not.
(9) the programme control circut radio of controlling in-vehicle multi-media system to be measured is made as the FM state, and selected wireless frequency is 98MHz;
(10) the computer control signal generator is made as 98MHz with its frequency, and its incoming level is made as 66dBuV, and FM modulates OFF;
(11) the computer control audio analyzer is opened, and the audio-frequency generator that said audio analyzer is set is opened for 20Hz, and level is made as-20dBV;
(12) computer control audio analyzer test noise level and record;
(13) set corresponding occurrence frequency and output level step by step according to the correspondence table of audio-frequency generator occurrence frequency and output level;
(14) computer control audio analyzer test noise level and record;
(15) judge whether to accomplish test FM function; In this way, then carry out step (16),, then carry out step (14,15) again as not
(16) programme control circut control radio is made as the AM state, and selected wireless frequency is 1053KHz; Begin to test wireless audio frequency antijamming capability;
(17) the computer control signal generator is made as 1053KHz with its frequency, and its incoming level is made as 66dBuV, and signal generator AM modulation is made as OFF;
(18) the computer control audio analyzer is opened, and the audio-frequency generator that said audio analyzer is set is opened for 20Hz, and level is made as-20dBV;
(19) computer control audio analyzer test noise level and record;
(20) set corresponding occurrence frequency and output level step by step according to the correspondence table of audio-frequency generator occurrence frequency and output level;
(21) computer control audio analyzer test noise level and record;
(22) judge whether to accomplish test AM function; In this way, then accomplish test and record data and generate EXCEL,, then carry out step (21,22) again as not
The foregoing description is the utility model preferred implementation; But the embodiment of the utility model is not limited by the examples; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of the utility model.
Claims (5)
1. the anti-interference automatization test system of in-vehicle multi-media system audio frequency is characterized in that, comprises controller, programme control circut, audio analyzer, signal generator, and the audio disturbances appearance; Said controller connects said programme control circut, said audio analyzer and said signal generator respectively; Said audio disturbances appearance is connected with said audio analyzer;
Said controller transmits control signal to said programme control circut, said signal generator and said audio disturbances appearance, treats measuring car and carries multimedia system and carry out audio-frequency test.
2. the anti-interference automatization test system of in-vehicle multi-media system audio frequency according to claim 1 is characterized in that, the anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises the direct supply that connects said audio disturbances appearance.
3. according to claim 1 or the anti-interference automatization test system of 2 described in-vehicle multi-media system audio frequency; It is characterized in that; The anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises the artificial antenna head, and said signal generator sends multi-media signal through the artificial antenna head to said in-vehicle multi-media system to be measured.
4. according to claim 1 or the anti-interference automatization test system of 2 described in-vehicle multi-media system audio frequency; It is characterized in that; The anti-interference automatization test system of said in-vehicle multi-media system audio frequency also comprises line traffic control, and said programme control circut connects in-vehicle multi-media system to be measured through said line traffic control.
5. according to claim 1 or the anti-interference automatization test system of 2 described in-vehicle multi-media system audio frequency, it is characterized in that said controller connects said programme control circut, said audio analyzer and said signal generator through USB interface respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201474863U CN202167234U (en) | 2011-05-10 | 2011-05-10 | Voice frequency anti-interference automated test system of vehicle-mounted multi-media system |
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| CN2011201474863U CN202167234U (en) | 2011-05-10 | 2011-05-10 | Voice frequency anti-interference automated test system of vehicle-mounted multi-media system |
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| CN202167234U true CN202167234U (en) | 2012-03-14 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539955A (en) * | 2012-03-22 | 2012-07-04 | 深圳市金凯博自动化测试有限公司 | Automation testing system of vehicle-mounted multimedia |
| CN103326798A (en) * | 2013-06-26 | 2013-09-25 | 惠州市德赛西威汽车电子有限公司 | Test circuit conducting test on performance of products for restraining multi-path signal interference |
| CN104219005A (en) * | 2014-07-31 | 2014-12-17 | 惠州市凯越电子有限公司 | Vehicle-mounted radio anti-interference testing system and method |
| CN106973352A (en) * | 2017-03-13 | 2017-07-21 | 合肥极友软件开发有限公司 | Vehicle audio test system based on GPIB |
| CN109144031A (en) * | 2018-08-31 | 2019-01-04 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle mounted multimedia response steering wheel line traffic control function test system |
-
2011
- 2011-05-10 CN CN2011201474863U patent/CN202167234U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539955A (en) * | 2012-03-22 | 2012-07-04 | 深圳市金凯博自动化测试有限公司 | Automation testing system of vehicle-mounted multimedia |
| CN103326798A (en) * | 2013-06-26 | 2013-09-25 | 惠州市德赛西威汽车电子有限公司 | Test circuit conducting test on performance of products for restraining multi-path signal interference |
| CN104219005A (en) * | 2014-07-31 | 2014-12-17 | 惠州市凯越电子有限公司 | Vehicle-mounted radio anti-interference testing system and method |
| CN106973352A (en) * | 2017-03-13 | 2017-07-21 | 合肥极友软件开发有限公司 | Vehicle audio test system based on GPIB |
| CN109144031A (en) * | 2018-08-31 | 2019-01-04 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle mounted multimedia response steering wheel line traffic control function test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HUIZHOU DESAY SV AUTO. ELECTRONICS CO., LTD. Free format text: FORMER OWNER: HUIZHOU DESAY AUTOMOTIVE ELECTRONICS CO., LTD. Effective date: 20121218 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121218 Address after: 516006 Guangdong province Huizhou Zhongkai hi tech Industrial Development Zone Pearl River Road No. 1 Patentee after: Huizhou Desay SV Auto. Electronics Co., Ltd. Address before: 516006 Guangdong province Huizhou Zhongkai hi tech Industrial Development Zone No. 15 District Patentee before: Huizhou Desay Automotive Electronics Co., Ltd. |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20140510 |