WO2020238702A1 - Procédé permettant de tester un amplificateur de puissance - Google Patents

Procédé permettant de tester un amplificateur de puissance Download PDF

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Publication number
WO2020238702A1
WO2020238702A1 PCT/CN2020/091113 CN2020091113W WO2020238702A1 WO 2020238702 A1 WO2020238702 A1 WO 2020238702A1 CN 2020091113 W CN2020091113 W CN 2020091113W WO 2020238702 A1 WO2020238702 A1 WO 2020238702A1
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WO
WIPO (PCT)
Prior art keywords
test
device under
under test
control terminal
channel signal
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PCT/CN2020/091113
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English (en)
Chinese (zh)
Inventor
张坤
Original Assignee
晶晨半导体(上海)股份有限公司
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Application filed by 晶晨半导体(上海)股份有限公司 filed Critical 晶晨半导体(上海)股份有限公司
Publication of WO2020238702A1 publication Critical patent/WO2020238702A1/fr

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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

Definitions

  • the invention relates to the field of hardware testing, in particular to a testing method of a power amplifier.
  • a test method aimed at effectively detecting whether the voice recognition of the intelligent voice system is normal and detecting a high-efficiency power amplifier is provided.
  • a test method for a power amplifier is connected to a control terminal and a test terminal respectively, the control terminal is connected to the test terminal; the control terminal controls the test terminal to test the device under test;
  • the test method includes the following steps:
  • the control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, if yes, execute step S2; if not, execute step S7;
  • the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, if yes, execute step S3; if not, execute step S7;
  • the control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, if yes, execute step S4; if not, execute step S7;
  • the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, if yes, execute step S5; if not, execute step S7;
  • the control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, if yes, execute step S6; if not, execute step S7;
  • the device under test and the test terminal are connected in a Bluetooth mode
  • the control terminal is used to send audio to the device under test to control the device under test to output audio signals;
  • the control terminal is also used to control the test terminal to test the device under test.
  • the control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, including:
  • the control terminal performs a sound channel test on the device under test through the test terminal.
  • the control terminal controls the device under test to play audio with a first preset frequency and adjusts the output volume of the device under test to a volume threshold.
  • the test terminal collects the channel signal output by the device under test, and judges whether the channel signal meets the first preset condition;
  • the first preset condition includes:
  • the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, including:
  • the control terminal performs a total harmonic distortion plus noise test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a second preset frequency, and the test terminal collects the output of the device under test Channel signal, judging whether the channel signal meets the second preset condition;
  • the second preset condition includes: whether the decibel of the channel signal is within the first decibel threshold range.
  • control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, including:
  • the control terminal performs a crosstalk test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a third preset frequency, and the test terminal collects the channel signal output by the device under test and determines Whether the channel signal meets the third preset condition;
  • the third preset conditions include:
  • the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, including:
  • the control terminal performs an amplitude-frequency response test of the device under test through the test terminal, the control terminal controls the device under test to play audio with a fourth preset frequency, and the test terminal collects the channel signal output by the device under test , Judge whether the channel signal meets the fourth preset condition;
  • the fourth preset conditions include:
  • the control terminal performs phase difference and level difference tests on the device under test through the test terminal, the control terminal controls the device under test to play audio with a fifth preset frequency, and the test terminal collects the output of the device under test Channel signal, judge whether the channel signal meets the fifth preset condition;
  • the fifth preset conditions include:
  • phase difference test whether the phase difference between the left channel and the right channel is within the preset difference range
  • the control terminal performs a noise ratio test on the device under test to identify whether the output channel signal meets the sixth preset condition, including:
  • the control terminal performs a noise ratio test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a sixth preset frequency, and the test terminal collects the channel signal output by the device under test, Determine whether the channel signal meets the sixth preset condition;
  • the sixth preset condition includes:
  • the end of generating the test result includes:
  • control terminal is used to control the test terminal to proceed sequentially according to the test rules to check whether the power amplifier of the device under test is normal, so as to guarantee the normal operation of the voice recognition function of the device under test, and quickly and accurately locate the device under test
  • the fault location of the equipment improves the detection effect.
  • Fig. 1 is a flowchart of an embodiment of the power amplifier testing method according to the present invention
  • Fig. 2 is a test block diagram of an embodiment of the power amplifier test method according to the present invention.
  • this application proposes an effective detection intelligence Whether the speech recognition of the speech system is normal or not, it is a test method to detect the high efficiency power amplifier.
  • the device under test 1 is connected to the control terminal 2 and the test terminal 3 respectively, and the control terminal 2 is connected to the test terminal 3; the control terminal 2 controls The test terminal 3 tests the device under test 1;
  • the device under test 1 and the test terminal 3 can be connected by Bluetooth;
  • the device under test 1 can be connected to the control terminal 2 through a data line or WIFI communication mode;
  • the control terminal 2 is also used to control the test terminal 3 to test the device under test 1.
  • the control terminal performs a sound channel test on the device under test to determine whether the output sound channel signal meets the first preset condition, if yes, execute step S2; if not, execute step S7;
  • step S1 includes:
  • the control terminal performs a sound channel test on the device under test through the test terminal.
  • the control terminal controls the device under test to play audio with a first preset frequency and adjusts the output volume of the device under test to a volume threshold.
  • the test terminal collects the channel signal output by the device under test, and judges whether the channel signal meets the first preset condition;
  • the channel signal includes a left channel signal and a right channel signal.
  • step S1 when the channel test is performed, the voltage values of the left channel and the right channel are judged separately; the power values of the left channel and the right channel are judged at the same time, if the left channel and the right channel have At least one that does not meet the threshold range is regarded as a test failure, and step S7 is executed.
  • the control terminal performs a total harmonic distortion plus noise test on the device under test to determine whether the output channel signal meets the second preset condition, if yes, execute step S3; if not, execute step S7;
  • step S2 includes:
  • the second preset condition includes: whether the decibel of the channel signal is within the first decibel threshold range.
  • the control terminal performs a crosstalk test on the device under test to determine whether the output channel signal meets the third preset condition, if yes, execute step S4; if not, execute step S7;
  • step S3 includes:
  • the control terminal performs a crosstalk test on the device under test through the test terminal, the control terminal controls the device under test to play audio with a third preset frequency, and the test terminal collects the channel signal output by the device under test and determines Whether the channel signal meets the third preset condition;
  • the third preset conditions include:
  • the control terminal performs an amplitude-frequency response test on the device under test to determine whether the output channel signal meets the fourth preset condition, if yes, execute step S5; if not, execute step S7;
  • step S4 includes:
  • the fourth preset conditions include:
  • step S4 when the amplitude-frequency response test is performed, the maximum decibels of the left and right channels are judged separately; if at least one of the maximum decibels of the left and right channels does not meet the threshold range, the test is regarded as a failure Step S7 is executed.
  • the control terminal performs phase difference and level difference tests on the device under test to determine whether the output channel signal meets the fifth preset condition, if yes, execute step S6; if not, execute step S7;
  • step S5 includes:
  • the control terminal performs phase difference and level difference tests on the device under test through the test terminal, the control terminal controls the device under test to play audio with a fifth preset frequency, and the test terminal collects the output of the device under test Channel signal, judge whether the channel signal meets the fifth preset condition;
  • the fifth preset conditions include:
  • phase difference test whether the phase difference between the left channel and the right channel is within the preset difference range
  • step S5 if at least one of the phase difference test and the level difference test fails, it is deemed that the test has failed and step S7 is executed.
  • control terminal performs a noise ratio test on the device under test, identifies whether the output channel signal meets the sixth preset condition, and executes step S7;
  • step S6 includes:
  • the sixth preset condition includes:
  • the device under test can be a smart TV, a smart set-top box, a smart speaker and other electronic products that require voice control.
  • control terminal is used to control the test terminal to proceed sequentially according to the test rules to check whether the power amplifier of the device under test is normal, so as to provide guarantee for the normal operation of the voice recognition function of the device under test, which can quickly and accurately locate the device under test.
  • the fault location of the testing equipment improves the detection effect, avoids repeated debugging, saves time and cost, and avoids waste of resources.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)

Abstract

L'invention concerne un procédé permettant de tester un amplificateur de puissance, lequel procédé appartient au domaine du test de matériel. Dans la présente invention, une extrémité de commande est utilisée pour commander une extrémité de test pour effectuer de manière séquentielle, selon une règle de test, des tests sur un dispositif à tester, de manière à vérifier si un amplificateur de puissance du dispositif à tester est normal, ce qui permet de fournir une garantie de fonctionnement normal d'une fonction de reconnaissance vocale du dispositif à tester, de localiser rapidement et avec précision une position de défaut du dispositif à tester et d'améliorer l'effet de détection.
PCT/CN2020/091113 2019-05-24 2020-05-19 Procédé permettant de tester un amplificateur de puissance WO2020238702A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910441346.8A CN110099350A (zh) 2019-05-24 2019-05-24 功放的测试方法
CN201910441346.8 2019-05-24

Publications (1)

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WO2020238702A1 true WO2020238702A1 (fr) 2020-12-03

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WO (1) WO2020238702A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110099350A (zh) * 2019-05-24 2019-08-06 晶晨半导体(上海)股份有限公司 功放的测试方法
CN110913323A (zh) * 2019-11-30 2020-03-24 航天科技控股集团股份有限公司 车载功放散热性能的检测方法

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CN1696720A (zh) * 2004-05-11 2005-11-16 建兴电子科技股份有限公司 利用音讯分析仪测试音讯播放器的方法及其装置
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Publication number Priority date Publication date Assignee Title
CN101192182A (zh) * 2006-12-01 2008-06-04 鸿富锦精密工业（深圳）有限公司 音频放音测试装置及方法
CN101207943A (zh) * 2006-12-18 2008-06-25 英业达股份有限公司 音讯特性的自动测量方法及其电脑可读取存储媒介
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CN101355829A (zh) * 2007-07-25 2009-01-28 鹏智科技(深圳)有限公司 减小噪音影响的发声设备测试装置及测试方法
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