CN110913323A - Method for detecting heat dissipation performance of vehicle-mounted power amplifier - Google Patents
Method for detecting heat dissipation performance of vehicle-mounted power amplifier Download PDFInfo
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- CN110913323A CN110913323A CN201911208095.5A CN201911208095A CN110913323A CN 110913323 A CN110913323 A CN 110913323A CN 201911208095 A CN201911208095 A CN 201911208095A CN 110913323 A CN110913323 A CN 110913323A
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- vehicle
- power amplifier
- mounted power
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a method for detecting the heat dissipation performance of a vehicle-mounted power amplifier, belongs to the field of optics, and aims to design a method for automatically detecting the heat dissipation performance of the vehicle-mounted power amplifier to verify the quality of a vehicle-mounted power amplifier product. The method comprises the following steps: the method comprises the following steps that firstly, an upper computer reads initial data T0 of a temperature measurement sensor arranged on a vehicle-mounted power amplifier; step two, adjusting the vehicle-mounted power amplifier to the maximum volume, and enabling the vehicle-mounted power amplifier to play the audio and video file in a full load manner; step three, collecting output voltage signals of all sound channels of the vehicle-mounted power amplifier, judging whether the output state is normal or not, if so, executing time t according to the operation of the step two, and then executing the step four; if not, ending the detection process; and fourthly, reading the data T1 of the temperature measurement sensor by the upper computer, and acquiring the temperature rise of the vehicle-mounted power amplifier so as to judge the heat dissipation performance of the vehicle-mounted power amplifier.
Description
Technical Field
The invention belongs to the field of vehicle-mounted product detection, and relates to detection of heat dissipation performance of a vehicle-mounted power amplifier.
Background
In the vehicle-mounted terminal product industry, as market competition is continuously intense, customers pursue higher user experience, and accordingly, a large number of application functions need to be developed for the product, which is an examination on product performance.
The vehicle-mounted power amplifier is a product with high utilization rate, and the performance of the product is influenced by the temperature rise of the product caused by the increase of the load in the using process, so the heat radiation performance of the product is fully considered in the design process, and the part is subjected to key design. However, the heat dissipation performance of the vehicle-mounted power amplifier is limited to the design of tendency in the research and development process at present, and the project is rarely detected due to the problems of personnel investment and beat detection in the production process, namely, no later-stage detection technology for the heat dissipation performance of the vehicle-mounted power amplifier is provided at present.
Disclosure of Invention
The invention aims to design a method for automatically detecting the heat dissipation performance of a vehicle-mounted power amplifier to verify the quality of the vehicle-mounted power amplifier product.
The invention discloses a method for detecting the heat dissipation performance of a vehicle-mounted power amplifier, which comprises the following steps of:
the method comprises the following steps that firstly, an upper computer reads initial data T0 of a temperature measurement sensor arranged on a vehicle-mounted power amplifier;
step two, adjusting the vehicle-mounted power amplifier to the maximum volume, and enabling the vehicle-mounted power amplifier to play the audio and video file in a full load manner;
step three, collecting output voltage signals of all sound channels of the vehicle-mounted power amplifier, judging whether the output state is normal or not, if so, executing time t according to the operation of the step two, and then executing the step four; if not, ending the detection process;
and fourthly, reading the data T1 of the temperature measurement sensor by the upper computer, and acquiring the temperature rise of the vehicle-mounted power amplifier so as to judge the heat dissipation performance of the vehicle-mounted power amplifier.
Preferably, the time t of the third step is 60 seconds to 120 seconds.
Preferably, the process of collecting output voltage signals of all sound channels of the vehicle-mounted power amplifier in the third step and judging whether the output state is normal is as follows:
step three, collecting all sound channel output voltage signals V of the vehicle-mounted power amplifieri,i＝1,2,3,4...，
Step three and two, judging whether the output voltage of any sound channel meets the conditionVmin<Vi<VmaxIn which V isminFor the lower threshold of the output voltage of the sound channel, VmaxOutputting an upper threshold value for the sound channel output voltage;
if yes, judging that the output voltages of all sound channels are qualified, and then executing a third step; if not, ending the detection process;
step three, judging whether the difference between the maximum value and the minimum value in the output voltages of all the sound channels is less than 0.5V, if so, considering that the output of each sound channel is stable and the output state of each sound channel is normal; if not, the output of each sound channel is not stable, the output state of each sound channel is abnormal, and the detection process is ended.
Preferably, in the fourth step, when the temperature rise is greater than 7 ℃, the heat dissipation performance of the vehicle-mounted power amplifier is considered to be poor, otherwise, the heat dissipation performance is good.
The invention has the beneficial effects that: the method of the invention enables the vehicle-mounted power amplifier to run at full load under the condition that each sound channel outputs normally, monitors the temperature rise of the product after running for a period of time, and takes the temperature rise as a direct parameter for judging the heat dissipation performance. The detection method can realize automatic detection of the vehicle-mounted power amplifier, and further judge the heat radiation performance of the vehicle-mounted power amplifier.
Drawings
Fig. 1 is a flowchart of a method for detecting the heat dissipation performance of the vehicle-mounted power amplifier according to the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
The first embodiment is as follows: the following describes the present embodiment with reference to fig. 1, and the method for detecting the heat dissipation performance of the vehicle power amplifier in the present embodiment includes the following steps:
the method comprises the following steps that firstly, an upper computer reads initial data T0 of a temperature measurement sensor arranged on a vehicle-mounted power amplifier;
step two, adjusting the vehicle-mounted power amplifier to the maximum volume, and enabling the vehicle-mounted power amplifier to play the audio and video file in a full load manner;
step three, collecting output voltage signals of all sound channels of the vehicle-mounted power amplifier, judging whether the output state is normal, if so, executing the step four after executing the time t according to the operation of the step two, wherein the time t is 60-120 seconds; if not, ending the detection process;
the process is as follows:
step three, collecting all sound channel output voltage signals V of the vehicle-mounted power amplifieri,i＝1,2,3,4...，
Step three and two, judging whether the output voltage of any sound channel meets the condition Vmin<Vi<VmaxIn which V isminFor the lower threshold of the output voltage of the sound channel, VmaxOutputting an upper threshold value for the sound channel output voltage;
if yes, judging that the output voltages of all sound channels are qualified, and then executing a third step; if not, ending the detection process;
step three, judging whether the difference between the maximum value and the minimum value in the output voltages of all the sound channels is less than 0.5V, if so, considering that the output of each sound channel is stable and the output state of each sound channel is normal; if not, the output of each sound channel is not stable, the output state of each sound channel is abnormal, and the detection process is ended.
And step four, reading data T1 of the temperature measurement sensor by the upper computer, and acquiring the temperature rise of the vehicle-mounted power amplifier to judge the heat dissipation performance of the vehicle-mounted power amplifier, wherein the temperature rise △ T is T1-T0, when the temperature rise △ T is higher than 7 ℃, the heat dissipation performance of the vehicle-mounted power amplifier is considered to be poor, and otherwise the heat dissipation performance is good.
The detection process of the embodiment needs to be carried out under the following conditions:
adjusting the volume of the product to the maximum;
playing an audio and video file to enable each sound channel of the product to run;
each sound channel of the product is normally output;
under the condition of maximum load, the operation is carried out for 60 to 120 seconds.
The test method has to be operated for a period of time to be effective when the product load is maximum.
By adopting the detection method, the heat dispersion performance of the vehicle-mounted power amplifier design can be checked, the product power amplifier quality can be verified, and the product contact well can be verified.
Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The method for detecting the heat dissipation performance of the vehicle-mounted power amplifier is characterized by comprising the following steps of:
the method comprises the following steps that firstly, an upper computer reads initial data T0 of a temperature measurement sensor arranged on a vehicle-mounted power amplifier;
step two, adjusting the vehicle-mounted power amplifier to the maximum volume, and enabling the vehicle-mounted power amplifier to play the audio and video file in a full load manner;
step three, collecting output voltage signals of all sound channels of the vehicle-mounted power amplifier, judging whether the output state is normal or not, if so, executing time t according to the operation of the step two, and then executing the step four; if not, ending the detection process;
and fourthly, reading the data T1 of the temperature measurement sensor by the upper computer, and acquiring the temperature rise of the vehicle-mounted power amplifier so as to judge the heat dissipation performance of the vehicle-mounted power amplifier.
2. The method for detecting the heat dissipation performance of the vehicle-mounted power amplifier according to claim 1, wherein the time t in the third step is 60 seconds to 120 seconds.
3. The method for detecting the heat dissipation performance of the vehicle-mounted power amplifier according to claim 1, wherein the step three is to collect output voltage signals of all sound channels of the vehicle-mounted power amplifier, and the process of determining whether the output state is normal is as follows:
step three, collecting all sound channel output voltage signals V of the vehicle-mounted power amplifieri,i＝1,2,3,4...，
Step three and two, judging whether the output voltage of any sound channel meets the condition Vmin<Vi<VmaxIn which V isminFor the lower threshold of the output voltage of the sound channel, VmaxOutputting an upper threshold value for the sound channel output voltage;
if yes, judging that the output voltages of all sound channels are qualified, and then executing a third step; if not, ending the detection process;
step three, judging whether the difference between the maximum value and the minimum value in the output voltages of all the sound channels is less than 0.5V, if so, considering that the output of each sound channel is stable and the output state of each sound channel is normal; if not, the output of each sound channel is not stable, the output state of each sound channel is abnormal, and the detection process is ended.
4. The method for detecting the heat dissipation performance of the vehicle-mounted power amplifier according to claim 1, wherein in the fourth step, when the temperature rise is higher than 7 ℃, the heat dissipation performance of the vehicle-mounted power amplifier is considered to be poor, otherwise, the heat dissipation performance is good.
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| CN201911208095.5A CN110913323A (en) | 2019-11-30 | 2019-11-30 | Method for detecting heat dissipation performance of vehicle-mounted power amplifier |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2914549Y (en) * | 2006-02-09 | 2007-06-20 | 宁波东威电子有限公司 | Multicenter speaker lifetime and speech coil temperature monitoring instrument |
| CN103648075A (en) * | 2013-12-16 | 2014-03-19 | 惠州华阳通用电子有限公司 | Device and method for automatically detecting abnormality of power amplifier |
| CN205105400U (en) * | 2015-10-27 | 2016-03-23 | 常州中策仪器有限公司 | Speaker temperature rise test system |
| US9860660B1 (en) * | 2014-09-30 | 2018-01-02 | Apple Inc. | Electronic device with speaker cavity cooling |
| CN107623893A (en) * | 2017-08-30 | 2018-01-23 | 惠州市德赛西威汽车电子股份有限公司 | A kind of automobile audio temperature monitoring system based on LabVIEW |
| CN107734427A (en) * | 2017-09-13 | 2018-02-23 | 广州市迪士普信息科技有限公司 | A kind of guard method and device according to voice coil loudspeaker voice coil temperature rise adjust automatically speaker volume |
| CN108353238A (en) * | 2015-09-28 | 2018-07-31 | 思睿逻辑国际半导体有限公司 | Speaker protection circuit system and method |
| EP3448059A1 (en) * | 2017-08-22 | 2019-02-27 | Nxp B.V. | Audio processor with temperature adjustment |
| CN110099350A (en) * | 2019-05-24 | 2019-08-06 | 晶晨半导体(上海)股份有限公司 | The test method of power amplifier |
| CN209390372U (en) * | 2018-12-25 | 2019-09-13 | 常州英讯电子有限公司 | A kind of coil temperature rise test macro |
| CN110262921A (en) * | 2019-07-15 | 2019-09-20 | 广州小鹏汽车科技有限公司 | A kind of method for diagnosing faults, system and the device of the vehicle-mounted loudspeaker of vehicle |
-
2019
- 2019-11-30 CN CN201911208095.5A patent/CN110913323A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2914549Y (en) * | 2006-02-09 | 2007-06-20 | 宁波东威电子有限公司 | Multicenter speaker lifetime and speech coil temperature monitoring instrument |
| CN103648075A (en) * | 2013-12-16 | 2014-03-19 | 惠州华阳通用电子有限公司 | Device and method for automatically detecting abnormality of power amplifier |
| US9860660B1 (en) * | 2014-09-30 | 2018-01-02 | Apple Inc. | Electronic device with speaker cavity cooling |
| CN108353238A (en) * | 2015-09-28 | 2018-07-31 | 思睿逻辑国际半导体有限公司 | Speaker protection circuit system and method |
| CN205105400U (en) * | 2015-10-27 | 2016-03-23 | 常州中策仪器有限公司 | Speaker temperature rise test system |
| EP3448059A1 (en) * | 2017-08-22 | 2019-02-27 | Nxp B.V. | Audio processor with temperature adjustment |
| CN107623893A (en) * | 2017-08-30 | 2018-01-23 | 惠州市德赛西威汽车电子股份有限公司 | A kind of automobile audio temperature monitoring system based on LabVIEW |
| CN107734427A (en) * | 2017-09-13 | 2018-02-23 | 广州市迪士普信息科技有限公司 | A kind of guard method and device according to voice coil loudspeaker voice coil temperature rise adjust automatically speaker volume |
| CN209390372U (en) * | 2018-12-25 | 2019-09-13 | 常州英讯电子有限公司 | A kind of coil temperature rise test macro |
| CN110099350A (en) * | 2019-05-24 | 2019-08-06 | 晶晨半导体(上海)股份有限公司 | The test method of power amplifier |
| CN110262921A (en) * | 2019-07-15 | 2019-09-20 | 广州小鹏汽车科技有限公司 | A kind of method for diagnosing faults, system and the device of the vehicle-mounted loudspeaker of vehicle |
Non-Patent Citations (2)
| Title |
|---|
| 张新德: "《组合音响收录机故障速修2000例》", 31 May 1995 * |
| 魏富远: "《车载音响系统的开发》", 《汽车零部件》 * |
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