Testing system and testing method for electronic equipment

Abstract

The present application discloses a test system and a test method for an electronic device. The test system for an electronic device includes a signal output device, a signal receiving device and a host computer. The signal output device is used to output a positive signal to a standard electronic device group and a negative signal to an electronic device group to be tested with the same specifications as the standard electronic device group, and the positive signal and the negative signal are opposite in phase and have the same energy level. During the test, the signal receiving device is in the same test space as the standard electronic device group and the electronic device group to be tested and is located in the middle of the standard electronic device group and the electronic device group to be tested, and is used to receive a wireless signal in the test space when the standard electronic device group receives a positive signal and the electronic device group to be tested receives a negative signal and each outputs a wireless signal. The host computer is used to compare the wireless signal with a preset wireless signal to determine whether the electronic device group to be tested meets the test requirements. Through the above method, the test efficiency of the electronic device can be improved.

Description

Technical Field

[0001] The present application relates to the field of electronic equipment testing, and in particular to a testing system and a testing method for electronic equipment. Background Art

[0002] With the rapid development of science and technology, various electronic devices continue to emerge and develop. Many electronic devices can output various signals, making people's lives more convenient and better. For example, playback devices can play sounds, transmit information through sounds, or play music. People can perceive the world through these sounds and feel the richness and beauty of life. Ultrasonic transmitters can emit ultrasonic waves, and people can use them to explore the unknown. Radio transmitters can emit radio, and people can use radio to transmit information remotely.

[0003] People often need to test the wireless signal output function of electronic equipment. For example, the manufacturer of playback equipment will test the finished playback equipment to ensure that it meets the product standards. Currently, electronic equipment is often tested one-to-one, that is, a standard wireless signal receiving device is used to test the electronic equipment to be tested to determine whether the electronic equipment to be tested is qualified. The test efficiency is low. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a testing system and a testing method for electronic equipment, which can improve the testing efficiency of the electronic equipment.

[0005] In order to solve the above technical problems, the first technical solution adopted by the present application is: to provide a testing method for electronic equipment, which is used to test the wireless signal output performance of the electronic equipment, and the method includes: respectively inputting positive signals and negative signals with opposite phases and the same energy level to the standard electronic equipment group and the electronic equipment group to be tested, and the standard electronic equipment group and the electronic equipment group to be tested have the same specifications and are placed relative to each other in the same test space. When the standard electronic equipment group receives a positive signal and the electronic equipment group to be tested receives a negative signal and each outputs a wireless signal, a signal receiving device in the test space and located between the standard electronic equipment group and the electronic equipment group to be tested receives the wireless signal in the test space. Compare the wireless signal with the preset wireless signal to determine whether the electronic equipment group to be tested meets the test requirements.

[0006] Among them, it includes providing a testing method for playback equipment, including inputting positive signals and negative signals with opposite phases and the same energy level to the standard playback equipment group and the playback equipment group to be tested respectively, the standard playback equipment group and the playback equipment group to be tested have the same specifications and are placed opposite to each other in the same test space. When the standard playback equipment group receives a positive signal and the playback equipment group to be tested receives a negative signal and each plays a sound, a sound signal in the test space is collected by a sound collection device located in the test space and between the standard playback equipment group and the playback equipment group to be tested. The intensity of the sound signal is compared with the preset intensity to determine whether the playback equipment group to be tested meets the test requirements.

[0007] To solve the above technical problems, the second technical solution adopted in the present application is: a test system is provided for testing the wireless signal output performance of electronic equipment, and the test system includes a signal output device, a signal receiving device and a host computer. The signal output device is used to output a positive signal to a standard electronic equipment group and output a negative signal to an electronic equipment group to be tested with the same specifications as the standard electronic equipment group, and the positive signal and the negative signal are opposite in phase and have the same energy level. The signal receiving device is in the same test space as the standard electronic equipment group and the electronic equipment group to be tested during the test and is located in the middle of the standard electronic equipment group and the electronic equipment group to be tested, and is used to receive the wireless signal in the test space when the standard electronic equipment group receives a positive signal and the electronic equipment group to be tested receives a negative signal and each outputs a wireless signal. The host computer is used to compare the wireless signal with the preset wireless signal to determine whether the electronic equipment group to be tested meets the test requirements.

[0008] The invention provides a test system for a playback device, which includes a power amplifier, a sound collection device and a host computer. The power amplifier is used to output a positive signal to a standard playback device group and a negative signal to a playback device group to be tested with the same specifications as the standard playback device group, and the positive signal and the negative signal are in opposite phases and have the same energy level. The sound collection device is used to be in the same test space as the standard playback device group and the playback device group to be tested and is located between the standard playback device group and the playback device group to be tested during the test, and is used to collect sound signals in the test space when the standard playback device group receives a positive signal and the playback device group to be tested receives a negative signal. The host computer is used to compare the intensity of the sound signal with the preset intensity to determine whether the playback device group to be tested meets the test requirements.

[0009] The beneficial effects of the present application are as follows: different from the prior art, by respectively inputting positive signals and negative signals with opposite phases and the same energy levels to the standard electronic equipment group and the electronic equipment group to be tested, the standard electronic equipment group and the electronic equipment group to be tested have the same specifications and are relatively placed in the same test space, when the standard electronic equipment group receives the positive signal and the electronic equipment group to be tested receives the negative signal and each outputs a wireless signal, a signal receiving device in the test space and between the standard electronic equipment group and the electronic equipment group to be tested receives the wireless signal in the test space, and compares the wireless signal with a preset wireless signal to determine whether the electronic equipment group to be tested meets the test requirements, since the standard electronic equipment group and the electronic equipment group to be tested each output a wireless signal The wireless signals can cancel each other out. Generally speaking, the signal receiving device in this case collects the wireless signals in the test space, the interference signals of the standard electronic equipment group and the interference signals of the electronic equipment group to be tested. Since the interference signals of the standard electronic equipment group as the standard are known and meet the requirements, if the output performance of the electronic equipment group to be tested does not meet the requirements, then the interference signals it will generate will be larger. In this way, the wireless signals received by the signal receiving device can be compared with the preset wireless signals, and then it can be determined whether the interference signals of the electronic equipment group to be tested meet the test requirements. It can be realized that multiple electronic devices can be tested at the same time using one signal receiving device, which improves the test efficiency of multiple electronic devices and reduces the test cost. Moreover, the electronic equipment groups to be tested are all in the same test space and output wireless signals together, so there is no need for signal isolation processing, which reduces the requirements for the signal isolation environment, reduces the environmental requirements for the test, improves the test efficiency, and can meet the test of electronic equipment of various power, models, and sensitivities, and has good compatibility.

[0010] Among them, by respectively inputting positive signals and negative signals with opposite phases and the same energy level to a standard playback device group and a playback device group to be tested that have the same specifications and are relatively placed in the same test space, and playing sounds when the standard playback device group receives a positive signal and the playback device group to be tested receives a negative signal, a sound collection device located in the test space and between the standard playback device group and the playback device group to be tested is used to collect the sound signal of the test space. Since the positive output signal output by the standard playback device group and the negative output signal output by the playback device group to be tested can cancel each other, generally speaking, the sound collected by the sound collection device in this case is the sound of the test device. The spatial noise signal of the test space, the noise signal of the standard playback device group, and the noise signal of the playback device group to be tested. Since the noise signal of the standard playback device group as a standard is known and meets the requirements, if the playback performance of the playback device group to be tested does not meet the requirements, then the noise signal it will generate will be larger. In this way, the intensity of the sound signal collected by the sound collection device can be compared with the preset intensity to determine whether the intensity of the noise signal of the playback device group to be tested meets the test requirements. It is possible to use a sound collection device to test multiple playback devices at the same time, improve the test efficiency of multiple playback devices, and reduce the test cost. Moreover, the playback device group to be tested is in the same test space and plays sound together, so there is no need for sound insulation treatment, which reduces the requirements for the sound insulation environment, reduces the test environment requirements, improves the test efficiency, and can meet the test of playback devices of various power, models, and sensitivities, with good compatibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the system composition of an embodiment of a test system for an electronic device of the present application;

[0012] Figure 2 A schematic diagram of the system composition of an embodiment of a test system for a playback device of the present application;

[0013] Figure 3 for Figure 2 A partial schematic block diagram of the test system shown;

[0014] Figure 4 This is a flow chart of an embodiment of a method for testing an electronic device of the present application;

[0015] Figure 5 This is a flow chart of an embodiment of a testing method for a playback device of the present application. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0017] After long-term research, the inventors found that people often need to test the wireless signal output function of electronic equipment. At present, electronic equipment is often tested one-to-one, that is, the electronic equipment to be tested is tested by a standard wireless signal receiving device to determine whether the electronic equipment to be tested is qualified, and the test efficiency is low. For example, the manufacturer of the playback equipment will perform finished product testing on the playback equipment produced to meet the product standards. At present, people often need to test the sound playback equipment. If a sound collection device is directly used to test multiple sound playback devices, it will cause multiple sound playback devices to interfere with each other, resulting in the meaninglessness of the consistency test. At present, the most stringent test of most finished playback equipment products is a one-to-one test, that is, a standard sound collection device and a set standard product are used to test, and the test results are derived and then the same sound collection device is used to test other sound playback devices. By comparing with the test results of the standard product, it is determined whether the finished playback equipment is qualified. However, the efficiency of testing the same batch of playback equipment one by one is too low, and the introduction of random testing or manual subjective testing will lead to the outflow of more non-consistent equipment. One-to-one testing of a batch of playback equipment will also lead to an increase in the cost of the sound insulation environment. In order to solve the above technical problems, the present application provides the following embodiments.

[0018] Figure 1 Schematic diagram of the system composition of the electronic device testing system embodiment of the present application. Figure 1 As shown, the electronic device test system 1 may include at least a signal output device 10, a signal receiving device 20 and a host computer 30, for example, and is used to test the wireless signal output performance of the electronic device.

[0019] The signal output device 10 is used to output a positive signal to the standard electronic device group 40 and a negative signal to the electronic device group 50 to be tested with the same specifications as the standard electronic device group 40. The positive signal and the negative signal have opposite phases and the same energy level.

[0020] The electronic device group 50 to be tested is the test object of the test system 1. The electronic device group 50 to be tested may include multiple electronic devices 51 to be tested, have a wireless signal output function, can convert electrical signals into wireless signals, and output wireless signals to the test space. Wireless signals include various signals that are not transmitted through lines and are opposite to wired signals, such as wireless signals, ultrasonic waves, and radio. The test space includes various test scenarios for testing, such as a test laboratory. The test system 1 can test one electronic device 51 to be tested, and can also test the electronic device group 50 to be tested including multiple electronic devices 51 to be tested at the same time.

[0021] When the test system 1 tests the electronic device group 50 to be tested, the standard electronic device group 40 can be used to cooperate with the test. The standard electronic device group 40 can have the same specifications as the electronic device group 50 to be tested. The standard electronic device group 40 may include a plurality of standard electronic devices 41, which have a wireless signal output function, can convert electrical signals into wireless signals, and output wireless signals to the test space. The standard electronic device 41 is a known electronic device that meets the electronic device standard, or the standard electronic device 41 can be considered to be an electronic device 51 to be tested that has been tested and meets the electronic device standard. The standard electronic device group 40 can be used as a reference device group for the test process. If the difference between the electronic device group 50 to be tested and the standard electronic device group 40 is within a preset range, it can be considered that the electronic device group 50 to be tested meets the test requirements.

[0022] The signal output device 10 can output a positive signal to the standard electronic device group 40, and the standard electronic device group 40 can output a positive output signal corresponding to the positive signal after receiving the positive signal output by the signal output device 10. The signal output device 10 can output a negative signal to the electronic device group 50 to be tested, and the electronic device group 50 to be tested can output a negative output signal corresponding to the negative signal after receiving the negative signal output by the signal output device 10. The standard electronic device group 40 and the electronic device group 50 to be tested can have the same signal output conditions. If the electronic device group 50 to be tested is the same as the standard electronic device group 40, the positive output signal corresponding to the positive signal output by the standard electronic device group 40 and the negative output signal corresponding to the negative signal output by the electronic device group 50 to be tested are also opposite in phase and have the same energy level.

[0023] During testing, the signal receiving device 20 is in the same test space as the standard electronic device group 40 and the electronic device group to be tested 50 and is located between the standard electronic device group 40 and the electronic device group to be tested 50, and is used to receive wireless signals in the test space when the standard electronic device group 40 receives a positive signal and the electronic device group to be tested 50 receives a negative signal and each outputs a wireless signal.

[0024] The signal receiving device 20 may have the function of converting wireless signals into other signals. Optionally, the signal receiving device 20 may collect wireless signals in the test space and then convert the wireless signals in the test space into electrical signals.

[0025] Optionally, the signal receiving device 20 may be located in the middle of the standard electronic device group 40 and the electronic device group 50 to be tested, so that the positive output signal output by the standard electronic device group 40 and the negative output signal output by the electronic device group 50 to be tested can be received at the same time. When the standard electronic device group 40 outputs a wireless signal, in addition to outputting a positive output signal, it can also generate an interference signal of the standard electronic device group 40. When the electronic device group 50 to be tested outputs a wireless signal, in addition to outputting a negative output signal, it can also generate an interference signal of the electronic device group 50 to be tested. There may also be inherent test space interference signals in the test space. When the standard electronic device group 40 and the electronic device group 50 to be tested each output a wireless signal, the signal receiving device 20 can receive the wireless signal in the test space. The wireless signal in the test space collected by the signal receiving device 20 may include the positive output signal output by the standard electronic device group 40, the negative output signal output by the electronic device group 50 to be tested, the interference signal of the standard electronic device group 40, the interference signal of the electronic device group 50 to be tested, and the superposition of the test space interference signal.

[0026] The host computer 30 is used to compare the wireless signal with the preset wireless signal to determine whether the electronic device group 50 to be tested meets the test requirements. The signal receiving device 20 can be connected to the host computer 30 through a circuit, and the signal receiving device 20 can convert the wireless signal in the test space into an electrical signal and input it into the host computer 30. The host computer 30 can determine whether the electronic device group 50 to be tested meets the test requirements through the electrical signal corresponding to the wireless signal in the test space.

[0027] Optionally, the signal output device 10 includes a power amplifier device 100, the standard electronic device group 40 includes a standard playback device group 400, the electronic device group 50 to be tested includes a playback device group 500 to be tested having the same specifications as the standard playback device group 400, the signal receiving device 20 includes a sound collection device 200, and the wireless signal includes a sound signal.

[0028] Optionally, the standard electronic equipment group 40 includes a standard radio transmitting equipment group (not shown), the electronic equipment group to be tested 50 includes a radio transmitting equipment group to be tested (not shown) with the same specifications as the standard radio transmitting equipment group (not shown), the signal receiving device 20 includes a radio receiving device (not shown), and the wireless signal includes a radio signal.

[0029] Optionally, the standard electronic device group 40 includes a standard ultrasonic transmitting device group (not shown), the electronic device group to be tested 50 includes an ultrasonic transmitting device group to be tested (not shown) with the same specifications as the standard ultrasonic transmitting device group (not shown), the signal receiving device 20 includes an ultrasonic receiving device (not shown), and the wireless signal includes an ultrasonic signal.

[0030] By respectively inputting a positive signal and a negative signal with opposite phases and the same energy level to the standard electronic device group 40 and the electronic device group 50 to be tested, the standard electronic device group 40 and the electronic device group 50 to be tested have the same specifications and are placed opposite to each other in the same test space. When the standard electronic device group 40 receives a positive signal and the electronic device group 50 to be tested receives a negative signal and each outputs a wireless signal, a signal receiving device 20 in the test space and between the standard electronic device group 40 and the electronic device group 50 to be tested receives the wireless signal in the test space, and compares the wireless signal with a preset wireless signal to determine whether the electronic device group 50 to be tested meets the test requirements. Since the wireless signals output by the standard electronic device group 40 and the electronic device group 50 to be tested can be Mutual cancellation. Generally speaking, the signal receiving device 20 in this case collects the wireless signal of the test space, the interference signal of the standard electronic device group 40 and the interference signal of the electronic device group 50 to be tested. Since the interference signal of the standard electronic device group 40 as a standard is known and meets the requirements, if the output performance of the electronic device group 50 to be tested does not meet the requirements, then the interference signal it generates will be larger. In this way, the wireless signal received by the signal receiving device 20 can be compared with the preset wireless signal, and then it can be determined whether the interference signal of the electronic device group 50 to be tested meets the test requirements. It can be realized that a signal receiving device 20 can be used to test multiple electronic devices at the same time, improve the test efficiency of multiple electronic devices, and reduce the test cost. Moreover, the electronic device group 50 to be tested is in the same test space and outputs wireless signals together, so there is no need for signal isolation processing, which reduces the requirements for the signal isolation environment, reduces the environmental requirements for the test, and improves the test efficiency. It can also meet the test of electronic devices of various power, models, and sensitivities, and has good compatibility.

[0031] Figure 2 Schematic diagram of the system composition of the test system embodiment of the playback device of the present application. Figure 2 As shown, the test system 2 of the playback device may include at least a power amplifier device 100 , a sound collection device 200 and a host computer 300 , for example.

[0032] Through the test system 2 of the playback device, the power amplifier device 100 is used to output a positive signal to the standard playback device group 400 and a negative signal to the playback device group 500 to be tested which has the same specifications as the standard playback device group 400, the positive signal and the negative signal are opposite in phase and have the same energy level, the sound collection device 200 is used to be in the same test space as the standard playback device group 400 and the playback device group 500 to be tested during the test and is located between the standard playback device group 400 and the playback device group 500 to be tested, and is used to collect the sound signal in the test space when the standard playback device group 400 receives a positive signal and the playback device group 500 to be tested receives a negative signal and each plays a sound, the host computer 300 is used to compare the intensity of the sound signal with the preset intensity to determine whether the playback device group 500 to be tested meets the test requirements, because the positive output signal output by the standard playback device group 400 and the playback device group to be tested are The negative output signals output by the test playback device group 500 can cancel each other out. Generally speaking, the sound collection device 200 in this case collects the spatial noise signal of the test space, the noise signal of the standard playback device group 400 and the noise signal of the playback device group 500 to be tested. Since the noise signal of the standard playback device group 400 as a standard is known and meets the requirements, if the playback performance of the playback device group 500 to be tested does not meet the requirements, then the noise signal it generates will be larger. In this way, the intensity of the sound signal collected by the sound collection device 200 can be compared with the preset intensity to determine whether the intensity of the noise signal of the playback device group 500 to be tested meets the test requirements. This enables the use of one sound collection device 200 to simultaneously test multiple playback devices 510 to be tested, thereby improving the test efficiency of multiple playback devices 510 to be tested and reducing the test cost. Moreover, the playback device group 500 to be tested are all in the same test space and play sounds together, so there is no need for sound insulation treatment, which reduces the requirements for the sound insulation environment, reduces the environmental requirements for the test, improves the test efficiency, and can meet the testing of playback devices of various power, models, and sensitivities, with good compatibility.

[0033] Figure 3 for Figure 2 The following is a partial schematic diagram of the test system. Figure 3 As shown, the power amplifier device 100 is used to output a positive signal to the standard playback device group 400 and a negative signal to the playback device group 500 to be tested with the same specifications as the standard playback device group 400, and the positive signal and the negative signal are opposite in phase and have the same energy level. The power amplifier device 100 may include a signal input terminal 150, and a preset sound source signal may be input into the power amplifier device 100 through the signal input terminal 150 so that the power amplifier device 100 processes the preset sound source signal. The power amplifier device 100 may amplify the preset sound source signal, and output the amplified preset sound source signal to the standard playback device group 400 and the playback device group 500 to be tested.

[0034] The power amplifier device 100 may include one or more power amplifier components 170. The number of the power amplifier components 170 may be the same as the number of the standard playback devices 410 of the standard playback device group 400 and the same as the number of the playback devices to be tested 510 of the playback device group to be tested 500. That is, the standard playback device group 400 may include one or more standard playback devices 410, and the playback device group to be tested 500 may include one or more playback devices to be tested 510.

[0035] The playback device group 500 to be tested is the test object of the test system 2. The playback device group 500 to be tested may include multiple playback devices 510 to be tested, which have a sound playback function, can convert electrical signals into sound signals, and output sound signals to the test space. The test system 2 can test one playback device 510 to be tested, and can also test the playback device group 500 to be tested including multiple playback devices 510 to be tested at the same time.

[0036] When the test system 2 tests the playback device group 500 to be tested, the standard playback device group 400 can be used to cooperate with the test. The standard playback device group 400 can have the same specifications as the playback device group 500 to be tested. The standard playback device group 400 can include multiple standard playback devices 410, which have a sound playback function and can convert electrical signals into sound signals and output sound signals to the test space. The standard playback device 410 is a known playback device that meets the playback device standard, or it can be considered that the standard playback device 410 is a playback device 510 to be tested that has been tested and meets the playback device standard. The standard playback device group 400 can be used as a reference device group for the test process. If the difference between the playback device group 500 to be tested and the standard playback device group 400 is within a preset range, it can be considered that the playback device group 500 to be tested meets the test requirements.

[0037] Under the same playback conditions, if the difference between the sound signal output by the standard playback device group 400 and the sound signal output by the playback device group 500 to be tested is within a preset range, it can be considered that the playback device group 500 to be tested meets the test requirements.

[0038] The power amplifier device 100 can output a positive signal to the standard playback device group 400, and the standard playback device group 400 can output a positive output signal corresponding to the positive signal after receiving the positive signal output by the power amplifier device 100. The power amplifier device 100 can output a negative signal to the playback device group 500 to be tested, and the playback device group 500 to be tested can output a negative output signal corresponding to the negative signal after receiving the negative signal output by the power amplifier device 100. The standard playback device group 400 and the playback device group 500 to be tested can have the same playback conditions. If the playback device group 500 to be tested is the same as the standard playback device group 400, the positive output signal corresponding to the positive signal output by the standard playback device group 400 and the negative output signal corresponding to the negative signal output by the playback device group 500 to be tested are also opposite in phase and have the same energy level.

[0039] Optionally, the power amplifier device 100 includes a power amplifier circuit 160 and a differential circuit 110, the power amplifier circuit 160 is used to amplify the preset sound source signal, and the differential circuit 110 can output differential signals with the same amplitude and opposite phases. The differential circuit 110 is used to differentially output the preset sound source signal after amplification by the power amplifier circuit 160, so as to output corresponding positive signals and negative signals. After the preset sound source signal is input to the differential circuit 110, the differential circuit 110 can output differential signals with the same amplitude and opposite phases, that is, output positive signals and negative signals with opposite phases and the same energy level.

[0040] Optionally, the power amplifier device 100 includes a frequency division circuit 120, which is used to divide the preset sound source signal after being amplified by the power amplifier circuit 160, and output multiple single-frequency point signals of different frequencies. The differential circuit 110 is used to differentially output each single-frequency point signal in turn to output positive signals and negative signals of different frequencies.

[0041] Optionally, the number of power amplifier circuits 160, the number of differential circuits 110, and the number of frequency division circuits 120 may be multiple, and each power amplifier circuit 160, differential circuit 110, and frequency division circuit 120 may be used as a group, that is, a group power amplifier component 170. In other words, the power amplifier component 170 may include a power amplifier circuit 160, a differential circuit 110, and a frequency division circuit 120.

[0042] Optionally, each power amplifier component 170 is connected to one standard playback device 410 and one playback device to be tested 510. Of course, one power amplifier component 170 can also be connected to multiple standard playback devices 410 and multiple playback devices to be tested 510 at the same time, or one power amplifier component 170 can be connected to the entire standard playback device group 400 or the entire playback device group 500 at the same time.

[0043] Optionally, the frequency division circuit 120 can divide the frequency band of the preset sound source signal according to the effective frequency range of the sound signal played by the standard playback device group 400 and the playback device group 500 to be tested, and output a single frequency point signal. Optionally, the frequency division circuit 120 can divide the frequency band by half an octave and output different single frequency point signals, for example, signals of 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, and 16000Hz can be output. Different single frequency point signals such as 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, and 16000Hz can be input to the playback device group 500 to be tested, and the playback device group 500 to be tested can be tested under the input signal of the corresponding frequency. In this way, the test system 2 can perform a multi-frequency test on the playback device group 500 to be tested.

[0044] Optionally, the power amplifier device 100 includes a positive signal output terminal 130 and a negative signal output terminal 140, the positive signal output terminal 130 outputs a positive signal, and the negative signal output terminal 140 outputs a negative signal. The positive signal output terminal 130 is connected to the positive terminal of the standard playback device 410, the negative signal output terminal 140 is connected to the positive terminal of the playback device to be tested 510, and the negative terminals of the standard playback device group 400 and the playback device group to be tested 500 are connected to a common ground.

[0045] Optionally, the power amplifier device 100 can output a positive signal through the positive signal output terminal 130 and output a negative signal through the negative signal output terminal 140, and can output a positive signal and a negative signal at the same time for the same single frequency point signal, and the output positive signal and negative signal have opposite phases and the same energy level. The positive signal output terminal 130 and the negative signal output terminal 140 correspond to each other and output the same single frequency point signal at the same time.

[0046] The positive signal output terminal 130 is connected to the positive terminal of the standard playback device 410, and the positive signal output by the differential circuit 110 is output to the standard playback device group 400 through the positive signal output terminal 130. The negative signal output terminal 140 is connected to the negative terminal of the playback device group 500 to be tested, and the negative signal output by the differential circuit 110 is output to the playback device group 500 to be tested through the negative signal output terminal 140. The negative terminal of the standard playback device group 400 and the negative terminal of the playback device group 500 to be tested can be connected to the same ground line, so that the negative terminal of the standard playback device group 400 and the negative terminal of the playback device group 500 to be tested are at the same level. The negative end of the standard playback device group 400 and the negative end of the playback device group 500 to be tested are at the same level, and the signals input by the power amplifier device 100 to the positive end of the standard playback device group 400 and the positive end of the playback device group 500 to be tested are opposite in phase and have the same energy level. If the playback device group 500 to be tested is the same as the standard playback device group 400 and has the same playback conditions, then the positive output signal corresponding to the positive signal output by the standard playback device group 400 and the negative output signal corresponding to the negative signal output by the playback device group 500 to be tested can also be opposite in phase and have the same energy level.

[0047] Optionally, the number of positive signal output terminals 130 may be multiple, the number of negative signal output terminals 140 may be multiple, the number of positive signal output terminals 130 is the same as the number of negative signal output terminals 140, the number of positive signal output terminals 130 is the same as the number of standard playback devices 410 of the standard playback device group 400, and the number of negative signal output terminals 140 is the same as the number of playback devices to be tested 510 of the playback device group to be tested 500. For example, each power amplifier component 170 has one positive signal output terminal 130 and one negative signal output terminal 140, that is, the number of power amplifier components 170 is the same as the number of positive signal output terminals 130 and the number of negative signal output terminals 140.

[0048] Each positive signal output terminal 130 corresponds to a negative signal output terminal 140 , and performs differential output on the same single frequency signal.

[0049] The power amplifier device 100 may include multiple positive signal output terminals 130, and accordingly, the power amplifier device 100 may be connected to multiple standard playback devices 410, and simultaneously output positive signals to the multiple standard playback devices 410. The power amplifier device 100 may include multiple negative signal output terminals 140, and accordingly, the power amplifier device 100 may be connected to multiple playback devices to be tested 510, and simultaneously output negative signals to the multiple playback devices to be tested 510. In this way, the test system 2 can test multiple playback devices to be tested 510 at the same time.

[0050] The number of positive signal output terminals 130 is the same as the number of negative signal output terminals 140. Accordingly, the number of multiple standard playback devices 410 and multiple playback devices to be tested 510 connected to the power amplifier device 100 is the same. Multiple standard playback devices 410 and multiple playback devices to be tested 510 can be placed opposite to each other in a one-to-one correspondence. Multiple standard playback devices 410 and multiple playback devices to be tested 510 can all be connected to the same ground line, so that the negative terminals of the multiple standard playback devices 410 and the negative terminals of the multiple playback devices to be tested 510 are at the same level.

[0051] Optionally, the test system 2 includes a ground interface 600, which is connected to the negative terminals of the standard playback device group 400 and the playback device group 500 to be tested at the same time, so that the standard playback device group 400 and the playback device group 500 to be tested are connected to the ground. The standard playback device group 400 and the playback device group 500 to be tested are connected to the ground interface 600 through the negative terminals, so that the negative terminals of the standard playback device group 400 and the playback device group 500 to be tested can be connected to the same ground wire, and the negative terminals of the standard playback device group 400 and the playback device group 500 to be tested are at the same level. Optionally, the ground interface 600 can be connected to the negative terminals of multiple standard playback devices 410 and multiple playback devices 510 to be tested.

[0052] The sound collection device 200 is used to be in the same test space as the standard playback device group 400 and the playback device group 500 to be tested during testing and is located between the standard playback device group 400 and the playback device group 500 to be tested. It is used to collect sound signals in the test space when the standard playback device group 400 receives a positive signal and the playback device group 500 to be tested receives a negative signal and when each plays a sound.

[0053] During the test process, the standard playback device group 400 and the playback device group 500 to be tested can be placed opposite to each other, and the sound collection device 200 can be located in the middle of the standard playback device group 400 and the playback device group 500 to be tested. The power amplifier device 100 can output a positive signal to the standard playback device group 400, and can output a negative signal to the playback device group 500 to be tested. After receiving the positive signal, the standard playback device group 400 can play a sound and output a positive output signal corresponding to the positive signal. After receiving the negative signal, the playback device group 500 to be tested can play a sound and output a negative output signal corresponding to the negative signal.

[0054] The sound collection device 200 may have the function of converting sound signals into other signals. Optionally, the sound collection device 200 may collect sound signals in the test space and then convert the sound signals in the test space into electrical signals.

[0055] Optionally, the sound collection device 200 may be located in the middle of the standard playback device group 400 and the playback device group 500 to be tested, so that the positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested can be received at the same time. When the standard playback device group 400 plays sound, in addition to outputting the positive output signal, it can also generate a standard playback device group 400 noise signal. When the playback device group 500 to be tested plays sound, in addition to outputting the negative output signal, it can also generate a noise signal of the playback device group 500 to be tested. The test space may also have an inherent test space noise signal. When the standard playback device group 400 and the playback device group 500 to be tested each play sound, the sound collection device 200 can collect the sound signal in the test space. The sound signal in the test space collected by the sound collection device 200 may include the superposition of the positive output signal output by the standard playback device group 400, the negative output signal output by the playback device group 500 to be tested, the noise signal of the standard playback device group 400, the noise signal of the playback device group 500 to be tested, and the noise signal of the test space.

[0056] Optionally, the standard playback device group 400 and the playback device group 500 to be tested may be placed relative to each other at a distance of 2 meters, and the sound collection device 200 may be located in the middle of the standard playback device group 400 and the playback device group 500 to be tested, that is, the sound collection device 200 is located 1 meter away from both the standard playback device group 400 and the playback device group 500 to be tested. For example, the standard playback device group 400 and the playback device group 500 to be tested may be placed relative to each other on a circle with a radius of 1 meter and the sound collection device 200 as the center, so that the distance between the standard playback device 410 and the playback device 510 to be tested and the sound collection device 200 is 1 meter.

[0057] Optionally, when the test system 2 is connected to multiple standard playback devices 410 and multiple playback devices 510 to be tested, so as to test multiple playback devices 510 to be tested at the same time, the sound signals in the test space collected by the sound collection device 200 may include the positive output signals output by multiple standard playback devices 410, the negative output signals output by multiple playback devices 510 to be tested, the noise signals of multiple standard playback devices 410, the noise signals of multiple playback devices 510 to be tested and the superposition of the noise signals of the test space.

[0058] The host computer 300 is used to compare the intensity of the sound signal with the preset intensity to determine whether the playback device group 500 to be tested meets the test requirements. The sound collection device 200 can be connected to the host computer 300 through a circuit, and the sound collection device 200 can convert the sound signal in the test space into an electrical signal and input it into the host computer 300. The host computer 300 can determine whether the playback device group 500 to be tested meets the test requirements through the electrical signal corresponding to the sound signal in the test space.

[0059] Optionally, the host computer 300 may include a processor (not shown) and a memory (not shown), and the processor may control the sound collection device 200 to collect sound information, and may also determine whether the playback device group 500 to be tested meets the test requirements based on the sound information. The memory may store information related to preset strength, and the processor may call the information related to preset strength to compare the strength of the sound signal with the preset strength to determine whether the playback device group 500 to be tested meets the test requirements.

[0060] Figure 4 This is a flow chart of an embodiment of a method for testing an electronic device of the present application. Figure 4 As shown, the test method embodiment of the electronic device of the present application, which describes a test method that can be used to test the wireless signal output performance of the electronic device, includes: S10: respectively inputting positive signals and negative signals with opposite phases and the same energy levels to the standard electronic device group and the electronic device group to be tested, the standard electronic device group and the electronic device group to be tested have the same specifications and are placed relative to each other in the same test space. S20: When the standard electronic device group receives a positive signal and the electronic device group to be tested receives a negative signal and each outputs a wireless signal, a signal receiving device in the test space and located between the standard electronic device group and the electronic device group to be tested receives the wireless signal in the test space. S30: Compare the wireless signal with the preset wireless signal to determine whether the electronic device group to be tested meets the test requirements.

[0061] Figure 5 This is a flow chart of an embodiment of the testing method for a playback device of the present application. Figure 5 As shown, the test method described in the embodiment of the test method of the playback device of the present application may include: S100: inputting positive signals and negative signals with opposite phases and the same energy level to the standard playback device group and the playback device group to be tested respectively, the standard playback device group and the playback device group to be tested have the same specifications and are placed relative to each other in the same test space. S200: When the standard playback device group receives a positive signal and the playback device group to be tested receives a negative signal and each plays a sound, a sound collection device in the test space and located between the standard playback device group and the playback device group to be tested is used to collect the sound signal of the test space. S300: Compare the intensity of the sound signal with the preset intensity to determine whether the playback device group to be tested meets the test requirements.

[0062] By inputting positive and negative signals with opposite phases and the same energy level to the standard playback device group 400 and the playback device group 500 with the same specifications and placed relatively in the same test space, respectively, and playing sounds when the standard playback device group 400 receives the positive signal and the playback device group 500 receives the negative signal, the sound signal of the test space is collected by using the sound collection device 200 located in the test space and between the standard playback device group 400 and the playback device group 500 to be tested, and finally comparing the intensity of the sound signal with the preset intensity to determine whether the playback device group 500 to be tested meets the test requirements. Since the positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested can cancel each other, generally speaking, the sound collection device 200 is used to collect the sound signal of the test space. In this case, the sound device 200 collects the spatial noise signal of the test space, the noise signal of the standard playback device group 400, and the noise signal of the playback device group 500 to be tested. Since the noise signal of the standard playback device group 400 as a standard is known and meets the requirements, if the playback performance of the playback device group 500 to be tested does not meet the requirements, then the noise signal it generates will be larger. In this way, the intensity of the sound signal collected by the sound collection device 200 can be compared with the preset intensity to determine whether the intensity of the noise signal of the playback device group 500 to be tested meets the test requirements. It can be achieved by using a sound collection device 200 to test multiple playback devices 510 to be tested at the same time, improve the test efficiency of multiple playback devices 510 to be tested, and reduce the test cost. Moreover, the playback device group 500 to be tested is in the same test space and plays sound together, so there is no need for sound insulation treatment, which reduces the requirements for the sound insulation environment, reduces the environmental requirements for the test, improves the test efficiency, and can meet the test of playback devices of various power, models, and sensitivities, with good compatibility.

[0063] The following is a detailed description of an embodiment of a cleaning method for the cleaning device of the present application.

[0064] S100: respectively inputting positive signals and negative signals with opposite phases and the same energy level to the standard playback device group and the playback device group to be tested. The standard playback device group and the playback device group to be tested have the same specifications and are placed opposite to each other in the same test space.

[0065] The playback device group 500 to be tested is the test object of the test system 2. The playback device group 500 to be tested may include multiple playback devices 510 to be tested, which have a sound playback function, can convert electrical signals into sound signals, and output sound signals to the test space. The test system 2 can test one playback device 510 to be tested, and can also test multiple playback devices 510 to be tested at the same time.

[0066] When the test system 2 tests the playback device group 500 to be tested, the standard playback device group 400 can be used to cooperate with the test. The standard playback device group 400 may include a plurality of standard playback devices 410 with a sound playback function, which can convert electrical signals into sound signals and output sound signals to the test space. The standard playback device 410 is a known playback device that meets the playback device standard. The standard playback device group 400 can be used as a reference device group for the test process. If the difference between the playback device group 500 to be tested and the standard playback device group 400 is within a preset range, it can be considered that the playback device group 500 to be tested meets the test requirements.

[0067] Optionally, the standard playback device group 400 may have the same specifications as the playback device group to be tested 500. Under the same playback conditions, if the difference between the sound signal output by the standard playback device group 400 and the sound signal output by the playback device group to be tested 500 is within a preset range, it can be considered that the playback device group to be tested 500 meets the test requirements.

[0068] Optionally, the multiple standard playback devices 410 and the multiple playback devices to be tested 510 may all be connected to the same ground line, so that the negative ends of the multiple standard playback devices 410 and the negative ends of the multiple playback devices to be tested 510 are at the same electrical level.

[0069] A positive signal can be input to the positive end of the standard playback device 410 of the standard playback device group 400, and the standard playback device group 400 can output a positive output signal corresponding to the positive signal after receiving the positive signal. A negative signal can be input to the positive end of the playback device 510 to be tested of the playback device group 500 to be tested, and the playback device group 500 to be tested can output a negative output signal corresponding to the negative signal after receiving the negative signal. The negative end of the standard playback device group 400 and the negative end of the playback device group 500 to be tested are at the same level, and the signals input to the positive end of the standard playback device 410 and the positive end of the playback device 510 to be tested by the power amplifier device 100 are opposite in phase and have the same energy level. If the playback device group 500 to be tested is the same as the standard playback device group 400 and has the same playback conditions, the positive output signal corresponding to the positive signal output by the standard playback device group 400 and the negative output signal corresponding to the negative signal output by the playback device group 500 to be tested can also be opposite in phase and have the same energy level.

[0070] Optionally, in the same test space, the standard playback device group 400 and the playback device group 500 to be tested can be placed relative to each other in a one-to-one correspondence. When the positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested are opposite in phase and have the same energy level, then at the middle position between the standard playback device group 400 and the playback device group 500 to be tested, the positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested can cancel each other. Optionally, in the same test space, multiple standard playback devices 410 and multiple playback devices 510 to be tested can be placed relative to each other in a one-to-one correspondence. When the positive output signal output by the multiple standard playback devices 410 and the negative output signal output by the multiple playback devices 510 to be tested are opposite in phase and have the same energy level, then at the middle position between the multiple standard playback devices 410 and the multiple playback devices 510 to be tested, the positive output signal output by the multiple standard playback devices 410 and the negative output signal output by the multiple playback devices 510 to be tested can cancel each other.

[0071] Optionally, how to input positive signals and negative signals with opposite phases and the same energy level to the standard playback device group 400 and the playback device group to be tested 500 respectively, specifically, can refer to the following steps included in step S100:

[0072] S110: Generate a positive signal and a negative signal by using a power amplifier device, and input the positive signal to the standard playback device group and the negative signal to the playback device group to be tested respectively through the power amplifier device.

[0073] The power amplifier device 100 can be used to generate positive signals and negative signals, which have opposite phases and the same energy levels. The power amplifier device 100 can output positive signals to the standard playback device group 400 and negative signals to the playback device group to be tested 500. The power amplifier device 100 can amplify the preset sound source signal and output the amplified preset sound source signal to the standard playback device group 400 and the playback device group to be tested 500.

[0074] Optionally, multiple positive signal output terminals 130 of the power amplifier device 100 may be used to connect multiple standard playback devices 410, and simultaneously output positive signals to the multiple standard playback devices 410. Multiple negative signal output terminals 140 of the power amplifier device 100, which are the same number as the positive signal output terminals 130, may be used to connect multiple playback devices 510 to be tested, and simultaneously output negative signals to the multiple playback devices 510 to be tested. In this way, the test system 2 can test multiple playback devices 510 to be tested at the same time.

[0075] Optionally, how to use the power amplifier device 100 to generate a positive signal and a negative signal may be specifically referred to the following steps included in step S110:

[0076] S111: Receive a preset audio source signal using a power amplifier device, and differentially output the preset audio source signal to output a positive signal and a negative signal.

[0077] The preset sound source signal can be input into the power amplifier device 100 through the signal input terminal 150 of the power amplifier device 100 so that the power amplifier device 100 can process the preset sound source signal. The preset sound source signal can be differentially output by the differential circuit 110 included in the power amplifier device 100 to output corresponding positive and negative signals. After the preset sound source signal is input into the differential circuit 110, the differential circuit 110 can output differential signals with the same amplitude and opposite phases, that is, output positive and negative signals with opposite phases and the same energy level.

[0078] Optionally, how to differentially output the preset sound source signal, outputting a positive signal and a negative signal, may be specifically referred to the following steps included in step S111:

[0079] Differential output of preset audio source signals, outputting positive and negative signals, including:

[0080] S112: Using a power amplifier device to perform frequency division processing on the preset audio source signal to output multiple single-frequency point signals with different frequencies.

[0081] Optionally, the frequency division circuit 120 of the power amplifier device 100 may be used to divide the preset audio source signal to output a plurality of single-frequency point signals of different frequencies.

[0082] Optionally, the frequency division circuit 120 can be used to divide the frequency band of the preset sound source signal according to the effective frequency range of the sound signal played by the standard playback device group 400 and the playback device group 500 to be tested, and output a single frequency point signal. Optionally, the frequency division circuit 120 can divide the frequency band by half an octave and output different single frequency point signals, for example, signals of 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, and 16000Hz can be output. Single frequency point signals of different frequencies such as 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, and 16000Hz can be input to the playback device group 500 to be tested, and the playback device group 500 to be tested can be tested under the input signal of the corresponding frequency. In this way, the test system 2 can perform a multi-frequency test on the playback device group 500 to be tested.

[0083] S113: using a power amplifier device to perform differential output on each single frequency point signal in sequence, so as to output a positive signal and a negative signal of each single frequency point signal.

[0084] Optionally, the differential circuit 110 can be used to differentially output each single frequency point signal in turn to output positive signals and negative signals of different frequencies. The power amplifier device 100 can output a positive signal through the positive signal output terminal 130 and output a negative signal through the negative signal output terminal 140 at the same time. The same single frequency point signal can output a positive signal and a negative signal at the same time, and the output positive signal and negative signal have opposite phases and the same energy level. The positive signal output terminal 130 and the negative signal output terminal 140 correspond to each other and output the same single frequency point signal at the same time.

[0085] The positive signal output terminal 130 is connected to the positive terminal of the standard playback device 410, and the positive signal output by the differential circuit 110 is output to the standard playback device group 400 through the positive signal output terminal 130. The negative signal output terminal 140 is connected to the negative terminal of the playback device group 500 to be tested, and the negative signal output by the differential circuit 110 is output to the playback device group 500 to be tested through the negative signal output terminal 140.

[0086] S200: When the standard playback device group receives a positive signal and the playback device group to be tested receives a negative signal and each plays a sound, a sound collection device located in the test space and between the standard playback device group and the playback device group to be tested is used to collect the sound signal of the test space.

[0087] Optionally, when the standard playback device group 400 receives a positive signal and the playback device group 500 to be tested receives a negative signal and each plays a sound, the sound collection device 200 can be used to collect the sound signal of the test space to test the playback device group 500 to be tested. The sound collection device 200 can be located in the middle of the standard playback device group 400 and the playback device group 500 to be tested. When the standard playback device group 400 receives a positive signal and the playback device group 500 to be tested receives a negative signal and each plays a sound, the sound collection device 200 can simultaneously receive the positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested. When the standard playback device group 400 plays a sound, in addition to outputting a positive output signal, it can also generate a standard playback device group 400 noise signal. When the playback device group 500 to be tested plays a sound, in addition to outputting a negative output signal, it can also generate a playback device group 500 noise signal to be tested. The test space can also have an inherent test space noise signal. When the standard playback device group 400 and the playback device group 500 to be tested play sounds respectively, the sound collection device 200 can collect sound signals in the test space. The sound signals in the test space collected by the sound collection device 200 may include the positive output signal output by the standard playback device group 400, the negative output signal output by the playback device group 500 to be tested, the noise signal of the standard playback device group 400, the noise signal of the playback device group 500 to be tested, and the superposition of the noise signal of the test space.

[0088] Optionally, the standard playback device group 400 and the playback device group 500 to be tested can be placed opposite to each other at a distance of 2 meters, and the sound collection device 200 can be located in the middle of the standard playback device group 400 and the playback device group 500 to be tested, that is, the sound collection device 200 is 1 meter away from both the standard playback device group 400 and the playback device group 500 to be tested.

[0089] The sound collecting device 200 can simultaneously receive the positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested, which have opposite phases and the same energy levels. The sound collecting device 200 is located in the middle position between the standard playback device group 400 and the playback device group 500 to be tested, so the positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested can offset each other.

[0090] Optionally, when the test system 2 is connected to multiple standard playback devices 410 and multiple playback devices to be tested 510, so as to test multiple playback devices to be tested 510 at the same time, the sound signal in the test space collected by the sound collection device 200 may include the positive output signals output by multiple standard playback devices 410, the negative output signals output by multiple playback devices to be tested 510, the noise signals of multiple standard playback devices 410, the noise signals of multiple playback devices to be tested 510 and the superposition of the noise signals in the test space. The positive output signals output by multiple standard playback devices 410 and the negative output signals output by multiple playback devices to be tested 510 may cancel each other.

[0091] S300: Compare the strength of the sound signal with a preset strength to determine whether the playback device group to be tested meets the test requirements.

[0092] Optionally, the host computer 300 can be used to compare the strength of the sound signal with a preset strength to determine whether the playback device group 500 to be tested meets the test requirements. The sound collection device 200 can be connected to the host computer 300 through a circuit, and the sound collection device 200 can convert the sound signal in the test space into an electrical signal and input it into the host computer 300. The host computer 300 can determine whether the playback device group 500 to be tested meets the test requirements through the electrical signal corresponding to the sound signal in the test space.

[0093] Optionally, the preset strength may be obtained based on a signal standard value, and the signal standard value may be derived from an enterprise standard, an industry standard, a national standard or an international standard.

[0094] Optionally, the processor of the host computer 300 can be used to control the sound collection device 200 to collect sound information, and can also determine whether the tested playback device group 500 meets the test requirements based on the sound information. The memory of the host computer 300 can be used to store information related to preset strengths, and the processor can call the preset strength related information to compare the strength of the sound signal with the preset strength to determine whether the tested playback device group 500 meets the test requirements.

[0095] The spatial noise signal of the test space may interfere with the test process and reduce the accuracy of the test. During the test process, the interference of the spatial noise signal of the test space needs to be controlled to reduce the interference that the spatial noise signal may cause to the test process. Optionally, before respectively inputting positive signals and negative signals with opposite phases and the same energy level to the standard playback device group 400 and the playback device group to be tested 500, the spatial noise signal of the test space may be collected to reduce the interference that the spatial noise signal may cause to the test process. For details, see the following steps included in step S300:

[0096] S310: When the standard playback device group 400 and the playback device group to be tested are not playing sound signals, a sound collection device is used to collect spatial noise signals of the test space.

[0097] Optionally, in the test space, when the standard playback device group 400 and the playback device group to be tested 500 do not play sound signals, the sound collection device 200 is used to collect sound signals in the test space. The sound signals collected at this time are spatial noise signals in the test space.

[0098] Reverse signals of the same phase can cancel each other out, and the spatial noise signal can be converted into a known signal after testing. The noise signal of the standard playback device group 400 is also known. Therefore, the sound difference between the playback device group 500 to be tested and the sound not played in the test space can be collected by the sound collection device 200, that is, the noise signal of the playback device group 500 to be tested.

[0099] S320: Generate a preset intensity based on the intensity of the spatial noise signal.

[0100] To reduce the interference of the spatial noise signal on the test process, a preset strength compared with the strength of the sound signal can be generated based on the strength of the spatial noise signal. For example, the signal standard value and the spatial noise signal strength value can be added to form the preset strength.

[0101] Testing the spatial noise signal can turn the unknown spatial noise signal into known data, thereby reducing or even eliminating the interference of the spatial noise signal on the test results, improving the accuracy of the test results, and reducing the requirements for the sound insulation environment. The test process and results have a strong anti-noise ability for a relatively stable noise environment.

[0102] Comparing the strength of the sound signal with a preset strength to determine whether the playback device group 500 to be tested meets the test requirements includes:

[0103] S330: If the intensity of the sound signal is greater than the preset intensity, it is determined that the playback device group to be tested does not meet the test requirements.

[0104] Optionally, the sound signal in the test space collected by the sound collection device 200 may include the positive output signal output by the standard playback device group 400, the negative output signal output by the playback device group 500 to be tested, the noise signal of the standard playback device group 400, the noise signal of the playback device group 500 to be tested and the superposition of the noise signal of the test space. The positive output signal output by the standard playback device group 400 and the negative output signal output by the playback device group 500 to be tested can offset each other, and the interference of the spatial noise signal of the test space can be controlled. Then, the difference between the intensity of the sound signal and the preset intensity is the superposition of the noise signal of the standard playback device group 400 and the noise signal of the playback device group 500 to be tested.

[0105] If the noise signal of the standard playback device group 400 is known and meets the test requirements, the difference between the intensity of the sound signal and the preset intensity can be regarded as the noise signal of the playback device group to be tested 500. If the intensity of the sound signal is greater than the preset intensity, it can be regarded that the intensity of the noise signal of the playback device group to be tested 500 does not meet the test requirements.

[0106] Optionally, when the intensity of the sound signal is higher than a preset intensity, it can be determined that there is a to-be-tested playback device 510 in the to-be-tested playback device group 510 that does not meet the test requirements.

[0107] Optionally, when it is determined that there are playback devices 510 to be tested that do not meet the test requirements in the playback device group 500 to be tested, the playback device group 510 to be tested can be divided into two groups, and each group of playback devices 510 to be tested can be tested separately. For example, if the number of playback devices 510 to be tested is 20, the 20 playback devices 510 to be tested can be divided into two groups of 10, and the two groups can be tested separately to determine which group has playback devices 510 to be tested that do not meet the test requirements. Similarly, if it is determined that there are playback devices 510 to be tested that do not meet the test requirements in the playback device group 500 of 10 in each group, the multiple playback devices 510 to be tested in each group of 10 can be further divided into small groups of 5 in each group, and the playback device group 500 of 5 in each group can be tested again until the playback devices 510 to be tested that do not meet the test requirements are selected. Optionally, defective products can be determined by analyzing the frequency of the audio file.

[0108] S340: If the strength of the sound signal is less than or equal to the preset strength, it is determined that the playback device group to be tested meets the test requirements.

[0109] Since the reverse signals of the same phase can cancel each other out, generally speaking, what the sound collection device 200 collects in this case is the spatial noise signal of the test space, the noise signal of the standard playback device group 400, and the noise signal of the playback device group 500 to be tested. Since the noise signal of the standard playback device group 400 as a standard is known and meets the requirements, if the playback performance of the playback device group 500 to be tested does not meet the requirements, then the noise signal it generates will be larger. In this way, the intensity of the sound signal collected by the sound collection device 200 can be compared with the preset intensity to determine whether the intensity of the noise signal of the playback device group 500 to be tested meets the test requirements. When the collected noise signal of the playback device group 500 to be tested is lower than the preset intensity of the noise, it can be considered that the noise signal of the playback device group 500 to be tested meets the standard and meets the test requirements.

[0110] If the intensity of the sound signal is less than the preset intensity, it can be considered that the noise signal intensity of the tested playback device group 500 meets the test requirements. When testing multiple playback devices 510 to be tested, when the intensity of the sound signal is lower than the preset intensity, it can be determined that the noise signal intensity of the multiple playback devices 510 to be tested meets the test requirements.

[0111] Optionally, the consistency test can be performed on multiple playback devices 510 to be tested whose noise signal strength meets the test requirements in turn. Optionally, the frequency response test can be performed on multiple playback devices 510 to be tested whose noise signal strength meets the test requirements in turn. The test does not require the addition of an independent sound insulation structure, and the test process and results have a strong anti-noise ability for a relatively stable noise environment.

[0112] In summary, this embodiment can use one sound collection device 200 to test multiple playback devices 510 to be tested at the same time, which can improve the test efficiency of multiple playback devices and reduce the test cost. Since multiple playback devices 510 to be tested can be tested in the same space at the same time, there is no need to set up a separate soundproof space for each playback device 510 to be tested, which can reduce the soundproofing cost. It can also meet the testing of playback devices of various power, models, and sensitivities and has good compatibility.

[0113] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A testing system, characterized in that: Used to test the wireless signal output performance of electronic equipment, the test system includes: A signal output device, used to output a positive signal to a standard electronic device group and a negative signal to a group of electronic devices to be tested that have the same specifications as the standard electronic device group; a signal receiving device, which is in the same test space as the standard electronic device group and the electronic device group to be tested and is located between the standard electronic device group and the electronic device group to be tested during testing, and is used to receive wireless signals in the test space when the standard electronic device group receives the positive signal and the electronic device group to be tested receives the negative signal and each outputs a wireless signal, wherein the positive signal and the negative signal are set to have opposite phases and the same energy level, so that the wireless signal output by the standard electronic device group and the wireless signal output by the electronic device group to be tested cancel each other at the signal receiving device without interference; The host computer is used to compare the wireless signal received by the signal receiving device with a preset wireless signal to determine whether the electronic device group to be tested meets the test requirements.

2. The test system according to claim 1, characterized in that: The signal output device includes a power amplifier device, the standard electronic equipment group includes a standard playback device group, and the electronic equipment group to be tested includes a playback device group to be tested with the same specifications as the standard playback device group; The signal receiving device includes a sound collecting device; the wireless signal includes a sound signal; The power amplifier device is used to output the positive signal to the standard playback device group and output the negative signal to the playback device group to be tested; The sound collection device is in the same test space as the standard playback device group and the playback device group to be tested during the test and is located between the standard playback device group and the playback device group to be tested, and is used to collect the sound signal in the test space when the standard playback device group receives the positive signal and the playback device group to be tested receives the negative signal and each plays a sound; The host computer is used to compare the intensity of the sound signal collected by the sound collection device with a preset intensity to determine whether the playback device group to be tested meets the test requirements.

3. The test system according to claim 2, characterized in that: The power amplifier device includes a power amplifier circuit and a differential circuit. The power amplifier circuit is used to amplify a preset sound source signal. The differential circuit is used to differentially output the preset sound source signal after being amplified by the power amplifier circuit to output the corresponding positive signal and the negative signal.

4. The test system according to claim 3, characterized in that: The power amplifier device includes a frequency division circuit, which is used to divide the preset sound source signal after being amplified by the power amplifier circuit, and output multiple single-frequency point signals of different frequencies; the differential circuit is used to differentially output each of the single-frequency point signals in turn, so as to output the positive signal and the negative signal of each of the single-frequency point signals.

5. The test system according to claim 2, characterized in that: The power amplifier device includes a positive signal output terminal and a negative signal output terminal, the positive signal output terminal outputs the positive signal, the negative signal output terminal outputs the negative signal, the positive signal output terminal is connected to the positive terminal of the standard playback device group, the negative signal output terminal is connected to the positive terminal of the playback device group to be tested, and the negative terminal of the standard playback device group and the negative terminal of the playback device group to be tested are connected to a common ground.

6. The test system according to claim 5, characterized in that: The number of the positive signal output terminals is multiple, the number of the negative signal output terminals is multiple, the number of the positive signal output terminals is the same as the number of the negative signal output terminals, the number of the positive signal output terminals is the same as the number of the standard playback devices in the standard playback device group, and the number of the negative signal output terminals is the same as the number of the playback devices to be tested in the playback device group to be tested.

7. The test system according to claim 5, characterized in that: The test system includes a ground line interface, which is connected to the negative terminals of the standard playback device group and the playback device group to be tested at the same time, so that the negative terminal of the standard playback device group and the negative terminal of the playback device group to be tested are connected to a common ground.

8. The test system according to claim 1, characterized in that: The standard electronic equipment group includes a standard radio transmitting equipment group, the electronic equipment group to be tested includes a radio transmitting equipment group to be tested with the same specifications as the standard radio transmitting equipment group; the signal receiving device includes a radio receiving device; the wireless signal includes a radio signal; or, The standard electronic equipment group includes a standard ultrasonic transmitting equipment group, and the electronic equipment group to be tested includes an ultrasonic transmitting equipment group to be tested with the same specifications as the standard ultrasonic transmitting equipment group; the signal receiving equipment includes an ultrasonic receiving equipment; and the wireless signal includes an ultrasonic signal.

9. A method for testing an electronic device, characterized in that: The test system according to any one of claims 1 to 7 is used to test the wireless signal output performance of the electronic device, and the method comprises: Inputting positive signals and negative signals to the standard electronic equipment group and the electronic equipment group to be tested respectively, wherein the standard electronic equipment group and the electronic equipment group to be tested have the same specifications and are placed opposite to each other in the same test space; When the standard electronic device group receives the positive signal and the electronic device group to be tested receives the negative signal and each outputs a wireless signal, the signal receiving device located in the test space and between the standard electronic device group and the electronic device group to be tested receives the wireless signal in the test space, and the positive signal and the negative signal are set to have opposite phases and the same energy level, so that the wireless signal output by the standard electronic device group and the wireless signal output by the electronic device group to be tested cancel each other at the signal receiving device without interference; The wireless signal received by the signal receiving device is compared with a preset wireless signal to determine whether the electronic device group to be tested meets the test requirements.

10. The method according to claim 9, characterized in that: The standard electronic equipment group includes a standard playback equipment group, and the electronic equipment group to be tested includes a playback equipment group to be tested with the same specifications as the standard playback equipment group; The signal receiving device includes a sound collecting device; the wireless signal includes a sound signal; The step of inputting positive signals and negative signals to the standard electronic equipment group and the electronic equipment group to be tested respectively comprises: inputting the positive signals and negative signals with opposite phases and the same energy levels to the standard playback equipment group and the playback equipment group to be tested respectively; The method comprises: when the standard electronic device group receives the positive signal and the electronic device group to be tested receives the negative signal and each outputs a wireless signal, using the signal receiving device located in the test space and between the standard electronic device group and the electronic device group to be tested to receive the wireless signal of the test space, comprising: when the standard playback device group receives the positive signal and the playback device group to be tested receives the negative signal and each plays a sound, using the sound collecting device located in the test space and between the standard playback device group and the playback device group to be tested to collect the sound signal of the test space; The comparing of the wireless signal received by the signal receiving device with the preset wireless signal to determine whether the electronic device group to be tested meets the test requirements includes: comparing the intensity of the sound signal collected by the sound collecting device with the preset intensity to determine whether the playback device group to be tested meets the test requirements.

11. The method according to claim 10, characterized in that: The step of inputting the positive signal and the negative signal with opposite phases and the same energy level to the standard playback device group and the playback device group to be tested respectively comprises: The positive signal and the negative signal are generated by a power amplifier device, and the positive signal is input to the standard playback device group and the negative signal is input to the playback device group to be tested respectively through the power amplifier device.

12. The method according to claim 11, characterized in that: The step of generating the positive signal and the negative signal by using a power amplifier device comprises: The power amplifier device is used to receive a preset sound source signal, and the preset sound source signal is differentially output to output the positive signal and the negative signal.

13. The method according to claim 12, characterized in that: The differential output of the preset sound source signal to output the positive signal and the negative signal includes: Using the power amplifier device to perform frequency division processing on the preset sound source signal to output multiple single-frequency point signals of different frequencies; The power amplifier device is used to perform differential output on each of the single-frequency point signals in sequence, so as to output the positive signal and the negative signal of each of the single-frequency point signals.

14. The method according to claim 10, characterized in that: Before respectively inputting the positive signal and the negative signal with opposite phases and the same energy level to the standard playback device group and the playback device group to be tested, the method includes: When the standard playback device group and the playback device group to be tested do not play sound signals, using the sound collection device to collect spatial noise signals of the test space; The preset intensity is generated based on the intensity of the spatial noise signal.

15. The method according to claim 14, characterized in that: The comparing the intensity of the sound signal collected by the sound collecting device with a preset intensity to determine whether the playback device group to be tested meets the test requirements includes: If the intensity of the sound signal is greater than the preset intensity, it is determined that the playback device group to be tested does not meet the test requirement; If the intensity of the sound signal is less than or equal to the preset intensity, it is determined that the group of playback devices to be tested meets the test requirement.

16. A method for testing an electronic device, characterized in that: The test system according to claim 8 is used to test the wireless signal output performance of the electronic device, and the method comprises: Inputting positive signals and negative signals to the standard electronic equipment group and the electronic equipment group to be tested respectively, wherein the standard electronic equipment group and the electronic equipment group to be tested have the same specifications and are placed opposite to each other in the same test space; When the standard electronic device group receives the positive signal and the electronic device group to be tested receives the negative signal and each outputs a wireless signal, the signal receiving device located in the test space and between the standard electronic device group and the electronic device group to be tested receives the wireless signal in the test space, and the positive signal and the negative signal are set to have opposite phases and the same energy level, so that the wireless signal output by the standard electronic device group and the wireless signal output by the electronic device group to be tested cancel each other at the signal receiving device without interference; The wireless signal received by the signal receiving device is compared with a preset wireless signal to determine whether the electronic device group to be tested meets the test requirements.

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