CN115333647B

CN115333647B - Testing system and testing method for electronic equipment

Info

Publication number: CN115333647B
Application number: CN202210707180.1A
Authority: CN
Inventors: 方冠臻
Original assignee: Hangzhou Tuya Information Technology Co Ltd
Current assignee: Hangzhou Tuya Information Technology Co Ltd
Priority date: 2022-06-21
Filing date: 2022-06-21
Publication date: 2025-02-21
Anticipated expiration: 2042-06-21
Also published as: CN115333647A

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

Test system and test method of electronic equipment

Technical Field

The present application relates to the field of testing electronic devices, and in particular, to a testing system and a testing method for an electronic device.

Background

With the development of technology, various electronic devices are continuously emerging and developing, and many electronic devices can output various signals, so that people can live more conveniently and better. For example, the playing device can play sound, information can be transmitted through sound, and music can also be played, so that people can feel rich and good life through the sound to perceive the world. The ultrasonic wave emitting device can emit ultrasonic waves, and people can explore unknown by utilizing the ultrasonic waves. The radio transmitting device can transmit radio, and people can remotely transmit information by using the radio

Often, a wireless signal output function of an electronic device needs to be tested, for example, a manufacturer of a playing device may perform finished product detection on the produced playing device to meet product standards. At present, electronic devices are often tested one to one, that is, an electronic device to be tested is tested through a standard wireless signal receiving device, whether the electronic device to be tested is qualified or not is judged, and testing efficiency is low.

Disclosure of Invention

The application mainly solves the technical problem of providing a test system and a test method for electronic equipment, which can improve the test efficiency of the electronic equipment.

In order to solve the technical problems, the first technical scheme adopted by the application is as follows: the method comprises the steps of respectively inputting positive signals and negative signals which are opposite in phase and identical in energy level to the corresponding electronic equipment groups to be tested into the standard electronic equipment groups, wherein the standard electronic equipment groups and the electronic equipment groups to be tested are identical in specification and are oppositely placed in the same test space. And when the standard electronic equipment set receives the positive signal and the electronic equipment set to be tested receives the negative signal and respectively outputs the wireless signals, the signal receiving equipment which is positioned in the test space and is positioned between the standard electronic equipment set and the electronic equipment set to be tested is utilized to receive the wireless signals of the test space. And comparing the wireless signal with a preset wireless signal to judge whether the electronic equipment group to be tested meets the test requirement.

The method for testing the playing equipment comprises the steps of respectively inputting positive signals and negative signals which are opposite in phase and identical in energy level to the standard playing equipment group and the playing equipment group to be tested, wherein the standard playing equipment group and the playing equipment group to be tested are identical in specification and are placed in the same test space in a relative mode. And when the standard playing equipment receives the positive signal and the playing equipment to be tested receives the negative signal and respectively plays the sound, the sound collecting equipment which is positioned in the test space and is positioned between the standard playing equipment group and the playing equipment group to be tested is used for collecting the sound signals of the test space. And comparing the intensity of the sound signal with the preset intensity to judge whether the playing equipment group to be tested meets the test requirement.

In order to solve the technical problems, the second technical scheme adopted by the application is to provide a test system for testing the wireless signal output performance of electronic equipment, wherein the test system comprises signal output equipment, signal receiving equipment and an upper computer. The signal output device is used for outputting positive signals to the standard electronic equipment group and outputting negative signals to the electronic equipment group to be tested, which has the same specification as the standard electronic equipment group, wherein the positive signals and the negative signals are opposite in phase and have the same energy level. The signal receiving device is positioned in the same test space as the standard electronic device group and the electronic device group to be tested and positioned between the standard electronic device group and the electronic device group to be tested during testing, and is used for receiving the wireless signals in the test space when the standard electronic device group receives positive signals and the electronic device group to be tested receives negative signals and respectively outputs wireless signals. The upper computer is used for comparing the wireless signal with a preset wireless signal so as to judge whether the electronic equipment group to be tested meets the test requirement.

The test system comprises a power amplifier device, a sound collecting device and an upper computer. The power amplifier device is used for outputting positive signals to the standard playing device group and outputting negative signals to the playing device group to be tested, which has the same specification as the standard playing device group, wherein the positive signals and the negative signals are opposite in phase and the energy level is the same. The sound collecting device is used for collecting sound signals in the test space when the standard playing device group receives positive signals and the playing device group to be tested respectively plays negative signals. The upper computer is used for comparing the intensity of the sound signal with the preset intensity so as to judge whether the playing equipment group to be tested meets the test requirement.

The application has the advantages that, unlike the prior art, the standard electronic equipment group and the electronic equipment group to be tested are respectively input with positive signals and negative signals which have opposite phases and the same energy level, the standard electronic equipment group and the electronic equipment group to be tested are relatively placed in the same test space, when the standard electronic equipment group receives positive signals and the electronic equipment group to be tested receive negative signals and respectively output wireless signals, the wireless signals in the test space and the signal receiving equipment positioned in the middle of the standard electronic equipment group and the electronic equipment group to be tested are utilized to receive the wireless signals of the test space, the wireless signals are compared with the preset wireless signals to judge whether the electronic equipment group to be tested meets the test requirement, in general, the signal receiving equipment can acquire the wireless signals of the test space, the interference signals of the standard electronic equipment group and the interference signals of the electronic equipment group to be tested under the condition, and the interference signals of the electronic equipment group to be tested are known and meet the requirement, if the output performance of the electronic equipment group to be tested is not met, the interference signals can be simultaneously generated by utilizing the preset signals, the test equipment can be tested by utilizing the test equipment to realize the test of whether the multiple pieces of equipment can meet the test requirements. In addition, the electronic equipment groups to be tested are all in the same test space and output wireless signals together, signal isolation processing is not needed, the requirement on signal isolation environment is reduced, the environment requirement of the test is reduced, the test efficiency is improved, the test of electronic equipment with various power, types and sensitivity can be met, and good compatibility is achieved.

The method comprises the steps of respectively collecting sound signals of a test space by utilizing sound collecting equipment which is positioned in the test space and positioned between the standard playing equipment group and the playing equipment group to be tested when the standard playing equipment group is used for receiving positive signals and the playing equipment group to be tested are respectively playing sounds when the standard playing equipment group is used for receiving negative signals, wherein the positive output signals output by the standard playing equipment group and the negative output signals output by the playing equipment group to be tested can be mutually offset, in general, the sound collecting equipment collects space noise signals of the test space, noise signals of the standard playing equipment group and noise signals of the playing equipment group to be tested under the condition, and the noise signals of the standard playing equipment group to be tested are known and meet the requirements. In addition, the playing equipment groups to be tested are all in the same test space and play the sound together, so that sound insulation treatment is not needed, the requirements on sound insulation environment are reduced, the environmental requirements of the test are reduced, the test efficiency is improved, the testing of the playing equipment with various power, types and sensitivity can be met, and good compatibility is achieved.

Drawings

FIG. 1 is a schematic diagram of the system components of an embodiment of a test system for an electronic device according to the present application;

FIG. 2 is a schematic diagram of system components of an embodiment of a testing system of a playback device according to the present application;

FIG. 3 is a partial schematic block diagram of the test system shown in FIG. 2;

FIG. 4 is a flowchart of an embodiment of a testing method of an electronic device according to the present application;

fig. 5 is a flowchart of an embodiment of a testing method of a playback device according to the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Through long-term research, the inventor finds that people often need to test the wireless signal output function of the electronic equipment, and at present, often one-to-one test is performed on the electronic equipment, namely, the electronic equipment to be tested is tested through a standard wireless signal receiving device, so that whether the electronic equipment to be tested is qualified or not is judged, and the test efficiency is low. For example, a manufacturer of the playback device may perform product inspection on the manufactured playback device to meet product standards. At present, people often need to test the sound playing equipment, if one sound collecting equipment is directly used for testing a plurality of sound playing equipment, the plurality of sound playing equipment are mutually interfered, and the consistency test is meaningless. At present, most of the most strict tests of finished products of playing equipment are one-to-one tests, namely, one standard sound collecting equipment and one set standard product are used for testing, the same sound collecting equipment is used for testing other sound playing equipment after test results are derived, and whether the finished products of the playing equipment are qualified or not is judged by comparing the test results with the test results of the standard product. However, the efficiency of testing the same batch of playing devices one by one is too low, and introducing a spot test or performing a manual subjective test can lead to flowing out of more non-uniform devices. One-to-one testing of a batch of playing devices also results in increased cost of sound insulation environment. In order to solve the above technical problems, the present application provides the following embodiments.

FIG. 1 is a schematic diagram of the system components of an embodiment of a test system for an electronic device according to the present application. As shown in fig. 1, the test system 1 of the electronic device may include at least a signal output device 10, a signal receiving device 20, and a host computer 30, for example, for testing wireless signal output performance of the electronic device.

The signal output device 10 is configured 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 having the same specification as the standard electronic device group 40, where the positive signal and the negative signal are opposite in phase and the energy level is the same.

The electronic device to be tested 50 is a test object of the test system 1, and the electronic device to be tested 50 may include a plurality of electronic devices to be tested 51, and has a wireless signal output function, and may convert an electrical signal into a wireless signal and output the wireless signal to a test space. The wireless signals include various signals transmitted without wires as opposed to wired signals, such as wireless signals, ultrasonic waves, radio waves, and the like. The test space includes various test scenarios for testing, such as a test laboratory, etc. The test system 1 may test one electronic device 51 to be tested, or may test the electronic device group 50 to be tested including a plurality of electronic devices 51 to be tested at the same time.

When the test system 1 tests the electronic device set 50 to be tested, the standard electronic device set 40 can be used for matching the test. The standard electronics set 40 may be the same size as the electronics set 50 to be tested. The standard electronic device group 40 may include a plurality of standard electronic devices 41 having a wireless signal output function for converting an electric signal into a wireless signal and outputting the wireless signal to the test space. The standard electronic device 41 is an electronic device known to satisfy the electronic device standard, or the standard electronic device 41 may be regarded as the electronic device 51 to be tested which has been tested and has satisfied the electronic device standard. The standard electronic device set 40 may be used as a reference device set for a testing process, and if the difference between the electronic device set 50 to be tested and the standard electronic device set 40 is within a preset range, the electronic device set 50 to be tested may be considered to meet the testing requirement.

The signal output device 10 may output a positive signal to the standard electronic device group 40, and the standard electronic device group 40 may 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 apparatus 10 may output a negative signal to the electronic device under test group 50, and the electronic device under test group 50 may output a negative output signal corresponding to the negative signal after receiving the negative signal output by the signal output apparatus 10. The standard electronic device set 40 and the electronic device set 50 to be tested can have the same signal output condition, and if the electronic device set 50 to be tested is the same as the standard electronic device set 40, the positive output signal corresponding to the positive signal output by the standard electronic device set 40 and the negative output signal corresponding to the negative signal output by the electronic device set 50 to be tested are also opposite in phase and the energy level is the same.

The signal receiving apparatus 20 is in the same test space as the standard electronic device group 40 and the electronic device group 50 to be tested and is located in the middle of the standard electronic device group 40 and the electronic device group 50 to be tested in the test, and is used for receiving the wireless signals in the test space when the standard electronic device group 40 receives the positive signals and the electronic device group 50 to be tested receives the negative signals and outputs the wireless signals respectively.

The signal receiving apparatus 20 may have a function of converting a wireless signal into other signals. Alternatively, the signal receiving apparatus 20 may collect wireless signals in the test space and then convert the wireless signals in the test space into electrical signals.

Alternatively, the signal receiving apparatus 20 may be located at an intermediate position of the standard electronic device group 40 and the electronic device group 50 to be tested, and then may receive 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 at the same time. The standard electronic device set 40 can generate the interference signal of the standard electronic device set 40 in addition to outputting the positive output signal when the standard electronic device set 40 outputs the wireless signal, and can generate the interference signal of the electronic device set 50 to be tested in addition to outputting the negative output signal when the electronic device set 50 to be tested outputs the wireless signal. The test space may also be present with an inherent test space disturbance signal. The signal receiving apparatus 20 can receive the wireless signal in the test space when the standard electronic device group 40 and the electronic device group 50 to be tested each output wireless. The wireless signals in the test space collected by the signal receiving apparatus 20 may include a superposition of a positive output signal output by the standard electronic device group 40, a negative output signal output by the electronic device group 50 to be tested, an interference signal of the standard electronic device group 40, an interference signal of the electronic device group 50 to be tested, and a test space interference signal.

The upper computer 30 is configured to compare the wireless signal with a preset wireless signal to determine whether the electronic device set 50 to be tested meets the testing requirement. The signal receiving device 20 may be connected to the upper computer 30 through a circuit, the signal receiving device 20 may input an electrical signal converted from a wireless signal in the test space to the upper computer 30, and the upper computer 30 may determine whether the electronic device group 50 to be tested meets the test requirement through an electrical signal corresponding to the wireless signal in the test space.

Alternatively, the signal output device 10 includes the power amplifier device 100, the standard electronic device group 40 includes the standard playing device group 400, the electronic device group to be tested 50 includes the playing device group to be tested 500 having the same specification as the standard playing device group 400, the signal receiving device 20 includes the sound collecting device 200, and the wireless signal includes the sound signal.

Alternatively, the standard electronic equipment set 40 includes a standard radio transmission equipment set (not shown), the electronic equipment set to be tested 50 includes a radio transmission equipment set to be tested (not shown) having the same specification as the standard radio transmission equipment set (not shown), the signal receiving device 20 includes a radio receiving device (not shown), and the wireless signal includes a radio signal.

Alternatively, the standard electronic equipment set 40 includes a standard ultrasonic wave transmitting equipment set (not shown), the electronic equipment set to be tested 50 includes an ultrasonic wave transmitting equipment set (not shown) to be tested having the same specification as the standard ultrasonic wave transmitting equipment set (not shown), the signal receiving equipment 20 includes an ultrasonic wave receiving equipment (not shown), and the wireless signal includes an ultrasonic wave signal.

By respectively inputting positive signals and negative signals which are opposite in phase and identical in energy level to the standard electronic equipment set 40 and the electronic equipment set 50 to be tested, the standard electronic equipment set 40 and the electronic equipment set 50 to be tested are placed in the same test space in a relative mode, when the standard electronic equipment set 40 receives the positive signals and the electronic equipment set 50 to be tested receives the negative signals and respectively outputs wireless signals, the wireless signals in the test space are received by using the signal receiving equipment 20 which is located in the middle of the standard electronic equipment set 40 and the electronic equipment set 50 to be tested, the wireless signals are compared with preset wireless signals to judge whether the electronic equipment set 50 to be tested meets the test requirements, and because the wireless signals respectively output by the standard electronic equipment set 40 and the electronic equipment set 50 to be tested can be mutually offset, in general, the wireless signals in the test space, the interference signals of the standard electronic equipment set 40 and the interference signals of the electronic equipment set 50 to be tested are acquired under the conditions, and the interference signals of the standard electronic equipment set 40 are known and meet the requirements, if the output performance of the electronic equipment set 50 to be tested does not meet the requirements, the test requirements can be realized by using the electronic equipment set 20 to be tested, and the test equipment to be tested can realize that if the test cost of the electronic equipment set to be greatly reduced is higher, and the test equipment to be tested can be tested by using the equipment to receive the interference signals. In addition, the electronic equipment groups 50 to be tested are all in the same test space and output wireless signals together, signal isolation processing is not needed, the requirement on signal isolation environment is reduced, the environment requirement of test is reduced, the test efficiency is improved, the test of electronic equipment with various power, model and sensitivity can be met, and good compatibility is achieved.

Fig. 2 is a schematic diagram of system components of a test system embodiment of a playback device according to the present application. As shown in fig. 2, the test system 2 of the playing device may include at least a power amplifier device 100, a sound collecting device 200, and an upper computer 300, for example.

By the test system 2 of the playing device, the power amplifier device 100 is used for outputting a positive signal to the standard playing device group 400 and outputting a negative signal to the playing device group 500 to be tested, which has the same specification as the standard playing device group 400, the positive signal and the negative signal have opposite phases and the same energy level, the sound collecting device 200 is used for being positioned in the same test space as the standard playing device group 400 and the playing device group 500 to be tested and in the middle of the standard playing device group 400 and the playing device group 500 to be tested during test, for collecting sound signals in the test space when the standard playing device group 400 receives the positive signal and the playing device group 500 to be tested receive the negative signal and respectively play sound, the upper computer 300 is used for comparing the intensity of the sound signals with preset intensity to judge whether the playing device group 500 to be tested meets the test requirement, because the positive output signal output by the standard playing device set 400 and the negative output signal output by the playing device set 500 to be tested can cancel each other, in general, the sound collecting device 200 collects the spatial noise signal of the test space, the noise signal of the standard playing device set 400 and the noise signal of the playing device set 500 to be tested under this condition, since the noise signals of the standard playing device set 400 as the standard are known and meet the requirements, if the playing performance of the playing device set 500 to be tested is not met, the noise signal generated by the playing device set 500 to be tested is larger, so that the comparison of the intensity of the sound signal collected by the sound collecting device 200 and the preset intensity can be utilized to further judge whether the intensity of the noise signal of the playing device set 500 to be tested meets the test requirement, the simultaneous test of a plurality of playing devices 510 to be tested by one sound collecting device 200 can be realized, the test efficiency of testing a plurality of to-be-tested playing devices 510 is improved, and the test cost is reduced. In addition, the playing equipment groups 500 to be tested are all in the same test space and play sound together, so that sound insulation treatment is not needed, the requirements on sound insulation environment are reduced, the environment requirements of the test are reduced, the test efficiency is improved, the testing of playing equipment with various power, models and sensitivity can be met, and good compatibility is achieved.

FIG. 3 is a partial schematic block diagram of the test system shown in FIG. 2. As shown in fig. 3, the power amplifier device 100 is configured to output a positive signal to the standard playback device group 400 and output a negative signal to the playback device group 500 to be tested having the same specification as the standard playback device group 400, where the positive signal and the negative signal are opposite in phase and the energy level is the same. The power amplifier device 100 may include a signal input 150, and a preset sound source signal may be input to the power amplifier device 100 through the signal input 150 for the power amplifier device 100 to process the preset sound source signal. The power amplification apparatus 100 may amplify the preset sound source signal and output the amplified preset sound source signal to the standard playback apparatus set 400 and the playback apparatus set 500 to be tested.

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

The playback device to be tested 500 is a test object of the test system 2, and the playback device to be tested 500 may include a plurality of playback devices to be tested 510, and has a sound playing function, and may convert an electrical signal into a sound signal, and output the sound signal to the test space. The test system 2 may test one playback device to be tested 510, or may test a playback device group to be tested 500 including a plurality of playback devices to be tested 510 at the same time.

When the test system 2 tests the playing device set 500 to be tested, the standard playing device set 400 can be used for matching the test. The standard playback device group 400 may be the same as the playback device group 500 to be tested. The standard playback device group 400 may include a plurality of standard playback devices 410 having a sound playback function that converts an electrical signal into a sound signal and outputs the sound signal to the test space. The standard playback device 410 is a playback device known to meet the playback device standard, or the standard playback device 410 may be considered to be a playback device 510 to be tested that has been tested and has met the playback device standard. The standard playing device set 400 may be used as a reference device set in a testing process, and if the difference between the playing device set 500 to be tested and the standard playing device set 400 is within a preset range, the playing device set 500 to be tested may be considered to meet the testing requirement.

Under the same playing conditions, the difference between the sound signal output by the standard playing device set 400 and the sound signal output by the playing device set 500 to be tested is within the preset range, so that the playing device set 500 to be tested can be considered to meet the testing requirement.

The power amplification device 100 may output a positive signal to the standard playback device group 400, and the standard playback device group 400 may output a positive output signal corresponding to the positive signal after receiving the positive signal output by the power amplification device 100. The power amplification apparatus 100 may output a negative signal to the to-be-tested playback apparatus group 500, and the to-be-tested playback apparatus group 500 may output a negative output signal corresponding to the negative signal after receiving the negative signal output by the power amplification apparatus 100. The standard playing device set 400 and the playing device set 500 to be tested can have the same playing condition, and if the playing device set 500 to be tested is the same as the standard playing device set 400, the positive output signal corresponding to the positive signal output by the standard playing device set 400 and the negative output signal corresponding to the negative signal output by the playing device set 500 to be tested are also opposite in phase and the energy level is the same.

Optionally, the power amplifier device 100 includes a power amplifier circuit 160 and a differential circuit 110, where the power amplifier circuit 160 is configured to amplify a preset audio signal, and the differential circuit 110 may output differential signals with the same amplitude and opposite phases. The differential circuit 110 is configured to differentially output the preset audio signal amplified by the power amplifier circuit 160, so as to output a positive signal and a negative signal. After the preset audio signal is input to the differential circuit 110, the differential circuit 110 may 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.

Optionally, the power amplifier device 100 includes a frequency dividing circuit 120, where the frequency dividing circuit 120 is configured to divide a preset audio signal amplified by the power amplifier circuit 160, output a plurality of single-frequency point signals with different frequencies, and the differential circuit 110 is configured to sequentially perform differential output on each single-frequency point signal, so as to output a positive signal and a negative signal with different frequencies.

Alternatively, the number of the power amplifier circuits 160, the number of the differential circuits 110, and the number of the frequency dividing circuits 120 may be plural, and each of the power amplifier circuits 160, the differential circuits 110, and the frequency dividing circuits 120 may be a group, that is, constitute the power amplifier assembly 170. In other words, the power amplifier assembly 170 may include the power amplifier circuit 160, the differential circuit 110, and the frequency dividing circuit 120.

Optionally, each power amplifier module 170 is correspondingly connected with a standard playing device 410 and a playing device 510 to be tested. Of course, one power amplifier assembly 170 may be correspondingly connected to a plurality of standard playing devices 410 and a plurality of playing devices 510 to be tested at the same time, or one power amplifier assembly 170 may be correspondingly connected to the whole standard playing device set 400 or the whole playing device set 500 to be tested at the same time.

Alternatively, the frequency dividing circuit 120 may divide the frequency band of the preset audio signal according to the effective frequency ranges of the audio signal played by the standard playing device group 400 and the playing device to be tested 500 to output a single-frequency point signal. Alternatively, the frequency dividing circuit 120 may perform frequency division output of half an octave on the frequency band, and may output different single-frequency point signals, for example, may output signals of 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 16000 Hz. Different single-frequency point signals of 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 16000Hz and the like can be respectively input into the playing device group 500 to be tested, and the playing device group 500 to be tested is tested under the input signals of corresponding frequencies. In this way, the test system 2 can perform multi-frequency point test on the play device set 500 to be tested.

Alternatively, the power amplifying device 100 includes a positive signal output terminal 130 and a negative signal output terminal 140, the positive signal output terminal 130 outputting a positive signal and the negative signal output terminal 140 outputting a negative signal. The positive signal output 130 is connected to the positive terminal of the standard playback device 410, the negative signal output 140 is connected to the positive terminal of the playback device under test 510, and the negative terminals of the standard playback device group 400 and the playback device under test 500 are commonly connected.

Alternatively, the power amplifying device 100 may output a positive signal through the positive signal output terminal 130 and a negative signal through the negative signal output terminal 140, and may output the same single frequency point signal with the positive signal and the negative signal at the same time, where the phases of the positive signal and the negative signal are opposite and the energy levels are the same. The positive signal output terminal 130 corresponds to the negative signal output terminal 140, and outputs the same single frequency point signal.

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 to be tested 500, and the negative signal output by the differential circuit 110 is output to the playback device group to be tested 500 through the negative signal output terminal 140. The negative terminal of the standard playback device set 400 and the negative terminal of the playback device set 500 to be tested may both be connected to the same ground, such that the negative terminal of the standard playback device set 400 and the negative terminal of the playback device set 500 to be tested are at the same level. The negative terminal of the standard playing device set 400 and the negative terminal of the playing device set 500 to be tested are in the same level, the signals input to the positive terminal of the standard playing device set 400 and the positive terminal of the playing device set 500 to be tested by the power amplifier device 100 are opposite in phase and the same in energy level, and if the playing device set 500 to be tested is the same as the standard playing device set 400 and has the same playing condition, the positive output signal corresponding to the positive signal output by the standard playing device set 400 and the negative output signal corresponding to the negative signal output by the playing device set 500 to be tested are opposite in phase and the same in energy level.

Alternatively, the number of the positive signal output terminals 130 may be plural, the number of the negative signal output terminals 140 may be plural, the number of the positive signal output terminals 130 is the same as the number of the negative signal output terminals 140, the number of the positive signal output terminals 130 is the same as the number of the standard playback devices 410 of the standard playback device group 400, and the number of the negative signal output terminals 140 is the same as the number of the playback devices 510 to be tested of the playback device group 500 to be tested. For example, each power amplifier module 170 has one positive signal output 130 and one negative signal output 140, i.e., the number of power amplifier modules 170 is the same as the number of positive signal outputs 130 and the number of negative signal outputs 140.

Each positive signal output terminal 130 corresponds to one negative signal output terminal 140, and differential output is performed on the same single-frequency point signal.

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

The number of the positive signal output terminals 130 is the same as the number of the negative signal output terminals 140, and accordingly, the number of the plurality of standard playing devices 410 and the number of the plurality of playing devices 510 to be tested, to which the power amplifier device 100 is connected, is the same. The plurality of standard playback devices 410 and the plurality of playback devices 510 to be tested may be placed in a one-to-one correspondence relative to each other. The plurality of standard playback devices 410 and the plurality of playback devices to be tested 510 may all be connected to the same ground, such that the negative terminals of the plurality of standard playback devices 410 and the plurality of playback devices to be tested 510 are at the same level.

Optionally, the test system 2 includes a ground wire interface 600, and the ground wire interface 600 is connected to the negative terminals of the standard playing device set 400 and the playing device set to be tested 500 at the same time, so that the standard playing device set 400 and the playing device set to be tested 500 are commonly connected. The standard playing device set 400 and the playing device set 500 to be tested are connected with the ground wire interface 600 through the negative terminal, so that the negative terminal of the standard playing device set 400 and the negative terminal of the playing device set 500 to be tested can be connected to the same ground wire, and the negative terminal of the standard playing device set 400 and the negative terminal of the playing device set 500 to be tested are at the same level. Alternatively, the ground interface 600 may connect the negative terminals of the plurality of standard playback devices 410 and the plurality of playback devices 510 to be tested.

The sound collecting device 200 is used for being in the same test space as the standard playing device group 400 and the playing device group 500 to be tested and being positioned between the standard playing device group 400 and the playing device group 500 to be tested in test, and is used for collecting sound signals in the test space when the standard playing device group 400 receives positive signals and the playing device group 500 to be tested receives negative signals and respectively plays sounds.

During the test, the standard playing device set 400 and the playing device set 500 to be tested may be placed relatively, and the sound production device 200 may be located at an intermediate position between the standard playing device set 400 and the playing device set 500 to be tested. The power amplifier device 100 may output a positive signal to the standard playback device group 400, and may output a negative signal to the playback device group 500 to be tested, and the standard playback device group 400 may play a sound after receiving the positive signal, output a positive output signal corresponding to the positive signal, and the playback device group 500 to be tested may play a sound after receiving the negative signal, and output a negative output signal corresponding to the negative signal.

The sound production apparatus 200 may have a function of converting a sound signal into other signals. Alternatively, the sound pickup apparatus 200 may collect sound signals in the test space and then convert the sound signals in the test space into electrical signals.

Alternatively, the sound pickup apparatus 200 may be located at an intermediate position between the standard playback apparatus set 400 and the playback apparatus set 500 to be tested, and then the positive output signal output by the standard playback apparatus set 400 and the negative output signal output by the playback apparatus set 500 to be tested may be received at the same time. The standard playing device set 400 can generate a noise signal of the standard playing device set 400 in addition to outputting a positive output signal when playing sound, and can generate a noise signal of the playing device set 500 to be tested in addition to outputting a negative output signal when playing sound. The test space may also have an inherent test space noise signal. The sound collecting device 200 may collect sound signals in the test space when the standard playback device group 400 and the playback device group 500 to be tested each play sound. The sound signals in the test space collected by the sound collecting device 200 may include a superposition of a positive output signal output by the standard playing device group 400, a negative output signal output by the playing device group 500 to be tested, a noise signal of the standard playing device group 400, a noise signal of the playing device group 500 to be tested, and a noise signal of the test space.

Alternatively, the standard playing device set 400 may be located 2 meters away from the playing device set 500 to be tested, and the sound pickup device 200 may be located at an intermediate position between the standard playing device set 400 and the playing device set 500 to be tested, i.e. the sound pickup device 200 is located 1 meter away from both the standard playing device set 400 and the playing device set 500 to be tested. For example, the standard playback device group 400 and the playback device to be tested 500 may be placed relatively on a circumference having a radius of 1 meter centered on the sound pickup device 200 such that the standard playback device 410 and the playback device to be tested 510 are located at a distance of 1 meter from the sound pickup device 200.

Alternatively, when the test system 2 is connected to the plurality of standard playing devices 410 and the plurality of playing devices to be tested 510, so that the plurality of playing devices to be tested 510 are tested at the same time, the sound signals in the test space collected by the sound collecting device 200 may include the superposition of the positive output signals output by the plurality of standard playing devices 410, the negative output signals output by the plurality of playing devices to be tested 510, the noise signals of the plurality of standard playing devices 410, the noise signals of the plurality of playing devices to be tested 510 and the noise signals of the test space.

The upper computer 300 is configured to compare the intensity of the sound signal with a preset intensity to determine whether the playing device set 500 to be tested meets the testing requirement. The sound collecting device 200 can be connected with the upper computer 300 through a circuit, the sound collecting device 200 can input an electric signal converted from a sound signal in the test space into the upper computer 300, and the upper computer 300 can judge whether the playing device group 500 to be tested meets the test requirement through the electric signal corresponding to the sound signal in the test space.

Optionally, the upper computer 300 may include a processor (not shown) and a memory (not shown), where the processor may control the sound collecting device 200 to collect sound information, and may also determine whether the playing device set 500 to be tested meets the test requirement according to the sound information. The memory may store preset intensity related information, and the processor may invoke the preset intensity related information to compare the intensity of the sound signal with the preset intensity, so as to determine whether the playing device set 500 to be tested meets the test requirement.

Fig. 4 is a flowchart of an embodiment of a testing method of an electronic device according to the present application. As shown in FIG. 4, the method for testing the electronic device according to the embodiment of the present application may be used for testing the wireless signal output performance of the electronic device, and includes S10, respectively inputting positive signals and negative signals with opposite phases and same energy level to the corresponding standard electronic device group and the electronic device group to be tested, where the standard electronic device group and the electronic device group to be tested have the same specification and are placed in the same test space. And S20, when the standard electronic equipment receives positive signals and the electronic equipment to be tested receives negative signals and respectively outputs wireless signals, the signal receiving equipment which is positioned in the test space and is positioned between the standard electronic equipment group and the electronic equipment group to be tested is used for receiving the wireless signals of the test space. S30, comparing the wireless signal with a preset wireless signal to judge whether the electronic equipment group to be tested meets the test requirement.

Fig. 5 is a flowchart of an embodiment of a testing method of a playback device according to the present application. As shown in FIG. 5, the test method of the playing device according to the embodiment of the present application may include S100, respectively inputting positive signals and negative signals with opposite phases and same energy levels to the standard playing device group and the playing device group to be tested, where the standard playing device group and the playing device group to be tested have the same specification and are placed in the same test space. And S200, when the standard playing equipment receives positive signals and the playing equipment to be tested receives negative signals, respectively playing sounds, collecting the sound signals of the test space by utilizing sound collecting equipment which is positioned in the test space and is positioned between the standard playing equipment group and the playing equipment group to be tested. S300, comparing the intensity of the sound signal with the preset intensity to judge whether the playing device group to be tested meets the test requirement.

The sound signal of the test space is collected by the sound collecting device 200 which is located in the test space and is located between the standard playing device group 400 and the playing device group 500 to be tested, and finally the intensity of the sound signal is compared with the preset intensity to judge whether the playing device group 500 to be tested meets the test requirement, because the positive output signal output by the standard playing device group 400 and the negative output signal output by the playing device group 500 to be tested can cancel each other, in general, the noise signal of the test space, the noise signal of the standard playing device group 400 and the noise signal of the playing device group 500 to be tested are collected under the condition, and because the noise signal of the standard playing device group 400 is known and meets the requirement, if the playing performance of the playing device group 500 does not meet the test requirement, the sound signal can be collected by the sound collecting device 200 to be tested by the plurality of the standard playing device group 400, and the sound signal can be tested by the plurality of devices to be tested, and the sound signal to be tested can be tested by the plurality of devices to realize the effect that the sound collecting device to be tested has the same time, and the sound signal to be tested by the plurality of the sound collecting devices to be tested has the same test efficiency, and the sound signal to be tested by the sound signal to be tested can be tested by the noise signal to be tested has the noise signal with the noise signal to be tested by the test intensity. In addition, the playing equipment groups 500 to be tested are all in the same test space and play sound together, so that sound insulation treatment is not needed, the requirements on sound insulation environment are reduced, the environment requirements of the test are reduced, the test efficiency is improved, the testing of playing equipment with various power, models and sensitivity can be met, and good compatibility is achieved.

Hereinafter, a cleaning method embodiment of the cleaning device of the present application will be described in detail.

And S100, respectively inputting positive signals and negative signals which are opposite in phase and identical in energy level to the standard playing equipment set and the playing equipment set to be tested, wherein the standard playing equipment set and the playing equipment set to be tested are identical in specification and are oppositely placed in the same test space.

The playback device to be tested 500 is a test object of the test system 2, and the playback device to be tested 500 may include a plurality of playback devices to be tested 510, and has a sound playing function, and may convert an electrical signal into a sound signal, and output the sound signal to the test space. The test system 2 may test one piece of the playing device 510 to be tested, or may test a plurality of pieces of the playing device 510 to be tested at the same time.

When the test system 2 tests the playing device set 500 to be tested, the standard playing device set 400 can be used for matching the test. The standard playback device group 400 may include a plurality of standard playback devices 410 having a sound playback function, which converts an electrical signal into a sound signal and outputs the sound signal to the test space. The standard playback device 410 is a playback device known to meet the playback device standard. The standard playing device set 400 may be used as a reference device set in a testing process, and if the difference between the playing device set 500 to be tested and the standard playing device set 400 is within a preset range, the playing device set 500 to be tested may be considered to meet the testing requirement.

Alternatively, the standard playback device set 400 may be the same as the playback device set 500 to be tested. Under the same playing conditions, the difference between the sound signal output by the standard playing device set 400 and the sound signal output by the playing device set 500 to be tested is within the preset range, so that the playing device set 500 to be tested can be considered to meet the testing requirement.

Alternatively, the plurality of standard playback devices 410 and the plurality of playback devices to be tested 510 may all be connected to the same ground, such that the negative terminals of the plurality of standard playback devices 410 and the plurality of playback devices to be tested 510 are at the same level.

A positive signal may be input to the positive terminal of the standard playback device 410 of the standard playback device group 400, and the standard playback device group 400 may output a positive output signal corresponding to the positive signal after receiving the positive signal. A negative signal may be input to the positive terminal of the playback device to be tested 510 of the playback device to be tested set 500, and a negative output signal corresponding to the negative signal may be output after the playback device to be tested set 500 receives the negative signal. The negative terminal of the standard playing device set 400 and the negative terminal of the playing device set 500 to be tested are at the same level, and the signals input to the positive terminal of the standard playing device 410 and the positive terminal of the playing device 510 to be tested by the power amplifier 100 are opposite in phase and the same in energy level, if the playing device set 500 to be tested is identical to the standard playing device set 400 and has the same playing condition, the positive output signal corresponding to the positive signal output by the standard playing device set 400 and the negative output signal corresponding to the negative signal output by the playing device set 500 to be tested are opposite in phase and the same in energy level.

Alternatively, the standard playback device group 400 and the playback device group 500 to be tested may be placed in a one-to-one correspondence with each other in the same test space. When the positive output signal output by the standard playing device set 400 and the negative output signal output by the playing device set 500 to be tested are opposite in phase and identical in energy level, the positive output signal output by the standard playing device set 400 and the negative output signal output by the playing device set 500 to be tested can cancel each other at the middle position of the standard playing device set 400 and the playing device set 500 to be tested. Alternatively, a plurality of standard playback devices 410 and a plurality of playback devices 510 to be tested may be placed in a one-to-one correspondence relative to each other in the same test space. When the positive output signals output by the standard playing devices 410 and the negative output signals output by the playing devices 510 to be tested are opposite in phase and same in energy level, the positive output signals output by the standard playing devices 410 and the negative output signals output by the playing devices 510 to be tested can be offset from each other at the middle positions of the standard playing devices 410 and the playing devices 510 to be tested.

Alternatively, how to input the positive signal and the negative signal having opposite phases and the same energy level to the standard playback device group 400 and the playback device group 500 to be tested, respectively, can be specifically referred to the following steps included in step S100:

s110, generating positive signals and negative signals by using power amplification equipment, and respectively inputting the positive signals to the standard playing equipment set and the negative signals to the playing equipment set to be tested by using the power amplification equipment.

The power amplifier device 100 may be used to generate a positive signal and a negative signal, which are opposite in phase and the same in energy level. A positive signal may be output to the standard playback device group 400 and a negative signal may be output to the playback device group 500 to be tested by the power amplification device 100. The power amplification apparatus 100 may amplify the preset sound source signal and output the amplified preset sound source signal to the standard playback apparatus set 400 and the playback apparatus set 500 to be tested.

Alternatively, the plurality of positive signal output terminals 130 of the power amplifying device 100 may be used to connect to the plurality of standard playing devices 410 and output positive signals to the plurality of standard playing devices 410 at the same time. The plurality of negative signal output terminals 140 of the power amplifier device 100, which are the same as the number of the positive signal output terminals 130, can be used to connect to the plurality of playing devices to be tested 510, and simultaneously output negative signals to the plurality of playing devices to be tested 510. In this way, the test system 2 can test multiple playing devices 510 to be tested at the same time.

Alternatively, if He Li generates a positive signal and a negative signal with the power amplifier device 100, the following steps are included in step S110:

S111, receiving a preset sound source signal by using power amplification equipment, outputting the preset sound source signal in a differential mode, and outputting a positive signal and a negative signal.

The signal input end 150 of the power amplifier device 100 may be used to input a preset sound source signal to the power amplifier device 100 for the power amplifier device 100 to process the preset sound source signal. The preset sound source signal may be differentially output by using the differential circuit 110 included in the power amplifying apparatus 100 to output a corresponding positive signal and negative signal. After the preset audio signal is input to the differential circuit 110, the differential circuit 110 may 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.

Alternatively, how to output the positive signal and the negative signal differentially to the preset sound source signal can be referred to as the following steps included in step S111:

differential output to preset sound source signal, output positive signal and negative signal, include:

S112, frequency division processing is carried out on the preset sound source signal by using power amplification equipment so as to output a plurality of single-frequency point signals with different frequencies.

Alternatively, the frequency dividing circuit 120 of the power amplifier device 100 may be used to divide the frequency of the preset audio signal and output a plurality of single-frequency point signals with different frequencies.

Alternatively, the frequency dividing circuit 120 may be used to divide the frequency band of the preset audio signal according to the effective frequency ranges of the audio signal played by the standard playing device set 400 and the playing device to be tested 500, and output a single-frequency point signal. Alternatively, the frequency dividing circuit 120 may perform frequency division output of half an octave on the frequency band, and may output different single-frequency point signals, for example, may output signals of 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 16000 Hz. Single-frequency point signals with different frequencies of 32Hz, 63Hz, 125Hz, 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz, 8000Hz, 16000Hz and the like can be respectively input into the playing device group 500 to be tested, and the playing device group 500 to be tested is tested under the input signals with corresponding frequencies. In this way, the test system 2 can perform multi-frequency point test on the play device set 500 to be tested.

And S113, utilizing power amplification equipment to sequentially perform differential output on each single-frequency point signal so as to output a positive signal and a negative signal of each single-frequency point signal.

Alternatively, the differential circuit 110 may be used to sequentially perform differential output on each single-frequency signal, so as to output a positive signal and a negative signal with different frequencies. The power amplifier device 100 may output a positive signal through the positive signal output terminal 130 and a negative signal through the negative signal output terminal 140, and may output the same single frequency point signal with the positive signal and the negative signal at the same time, where the phases of the output positive signal and the output negative signal are opposite and the energy levels are the same. The positive signal output terminal 130 corresponds to the negative signal output terminal 140, and outputs the same single frequency point signal.

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 to be tested 500, and the negative signal output by the differential circuit 110 is output to the playback device group to be tested 500 through the negative signal output terminal 140.

And S200, when the standard playing equipment receives positive signals and the playing equipment to be tested receives negative signals, respectively playing sounds, collecting the sound signals of the test space by utilizing sound collecting equipment which is positioned in the test space and is positioned between the standard playing equipment group and the playing equipment group to be tested.

Alternatively, when the standard playing device set 400 receives a positive signal and the playing device set 500 to be tested receives a negative signal, each playing sound may be performed, and the sound collecting device 200 may collect a sound signal of the test space to test the playing device set 500 to be tested. The sound collecting device 200 may be located at an intermediate position between the standard playing device group 400 and the playing device group 500 to be tested, and when the standard playing device group 400 receives a positive signal and the playing device group 500 to be tested receives a negative signal, and each sound is played, the sound collecting device 200 may simultaneously receive a positive output signal output by the standard playing device group 400 and a negative output signal output by the playing device group 500 to be tested. The standard playing device set 400 can generate a noise signal of the standard playing device set 400 in addition to outputting a positive output signal when playing sound, and can generate a noise signal of the playing device set 500 to be tested in addition to outputting a negative output signal when playing sound. The test space may also have an inherent test space noise signal. The sound collecting device 200 may collect sound signals in the test space when the standard playback device group 400 and the playback device group 500 to be tested each play sound. The sound signals in the test space collected by the sound collecting device 200 may include a superposition of a positive output signal output by the standard playing device group 400, a negative output signal output by the playing device group 500 to be tested, a noise signal of the standard playing device group 400, a noise signal of the playing device group 500 to be tested, and a noise signal of the test space.

Alternatively, the standard playing device set 400 may be located 2 meters away from the playing device set 500 to be tested, and the sound pickup device 200 may be located at an intermediate position between the standard playing device set 400 and the playing device set 500 to be tested, i.e. the sound pickup device 200 is located 1 meter away from both the standard playing device set 400 and the playing device set 500 to be tested.

The sound collecting device 200 can simultaneously receive the positive output signal output by the standard playing device set 400 and the negative output signal output by the playing device set 500 to be tested, which are opposite in phase and same in energy level, and the sound collecting device 200 is located at the middle position of the standard playing device set 400 and the playing device set 500 to be tested, so that the positive output signal output by the standard playing device set 400 and the negative output signal output by the playing device set 500 to be tested can cancel each other.

Alternatively, when the test system 2 is connected to the plurality of standard playing devices 410 and the plurality of playing devices to be tested 510, so that the plurality of playing devices to be tested 510 are tested at the same time, the sound signals in the test space collected by the sound collecting device 200 may include the superposition of the positive output signals output by the plurality of standard playing devices 410, the negative output signals output by the plurality of playing devices to be tested 510, the noise signals of the plurality of standard playing devices 410, the noise signals of the plurality of playing devices to be tested 510 and the noise signals of the test space. The positive output signal from the plurality of standard playback devices 410 and the negative output signal from the plurality of playback devices 510 to be tested may cancel each other out.

S300, comparing the intensity of the sound signal with the preset intensity to judge whether the playing device group to be tested meets the test requirement.

Optionally, the host computer 300 may be used to compare the intensity of the sound signal with a preset intensity to determine whether the playing device set 500 to be tested meets the test requirement. The sound collecting device 200 can be connected with the upper computer 300 through a circuit, the sound collecting device 200 can input an electric signal converted from a sound signal in the test space into the upper computer 300, and the upper computer 300 can judge whether the playing device group 500 to be tested meets the test requirement through the electric signal corresponding to the sound signal in the test space.

Alternatively, the preset intensity may be obtained based on a signal standard value, which may be from an enterprise standard, an industry standard, a national standard, or an international standard.

Alternatively, the processor of the host computer 300 may be used to control the sound collecting device 200 to collect sound information, and also determine whether the playing device set 500 to be tested meets the test requirement according to the sound information. The memory of the upper computer 300 may be used to store preset intensity related information, and the processor may call the preset intensity related information to compare the intensity of the sound signal with the preset intensity, so as to determine whether the playing device set 500 to be tested meets the test requirement.

The space noise signal of the test space can interfere the test process, so that the test accuracy is reduced, and the interference of the space noise signal of the test space is required to be controlled in the test process, so that the interference of the space noise signal to the test process is reduced. Optionally, before the positive signal and the negative signal with opposite phases and same energy level are respectively input to the standard playing device set 400 and the playing device set 500 to be tested, the spatial noise signal of the test space may be collected to reduce the interference that the spatial noise signal may generate on the test process, which may be specifically referred to as the following steps included in step S300:

S310, when the standard playing device group 400 and the playing device group to be tested do not play the sound signals, the sound collecting device is used for collecting the space noise signals of the test space.

Optionally, in the test space, when the standard playing device set 400 and the playing device set 500 to be tested do not play the sound signals, the sound collecting device 200 is used to collect the sound signals of the test space, and the collected sound signals are the space noise signals of the test space.

The opposite signals with the same phase can cancel each other, the spatial noise signal can be changed into a known signal through testing, and the noise signal of the standard playing device set 400 is also known, so that the sound difference between the playing device set 500 to be tested and the non-playing sound in the test space, that is, the noise signal of the playing device set 500 to be tested, can be collected by the sound collecting device 200.

And S320, generating preset intensity based on the intensity of the space noise signal.

To reduce interference of the spatial noise signal with the testing process, a preset intensity compared to the intensity of the sound signal may be generated based on the intensity of the spatial noise signal. For example, the signal standard value and the spatial noise signal intensity value may be added as the preset intensity.

The space noise signal is tested, and the unknown space noise signal can be changed into known data, so that the interference of the space noise signal on a test result can be reduced or even eliminated, the accuracy of the test result is improved, and the requirement on a sound insulation environment can be reduced. The test process and the result have stronger noise immunity to a relatively stable noise environment.

Comparing the intensity of the sound signal with the preset intensity to determine whether the playing device set 500 to be tested meets the test requirement, including:

s330, if the intensity of the sound signal is larger than the preset intensity, judging that the playing device group to be tested does not meet the test requirement.

Optionally, the sound signal in the test space collected by the sound collecting device 200 may include a positive output signal output by the standard playing device group 400, a negative output signal output by the playing device group 500 to be tested, a noise signal of the standard playing device group 400, a superposition of the noise signal of the playing device group 500 to be tested and the noise signal of the test space, where the positive output signal output by the standard playing device group 400 and the negative output signal output by the playing device group 500 to be tested may cancel each other, the interference of the spatial noise signal of the test space may be controlled, and the difference between the intensity of the sound signal and the preset intensity is the superposition of the noise signal of the standard playing device group 400 and the noise signal of the playing device group 500 to be tested.

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

Alternatively, when the intensity of the sound signal is higher than the preset intensity, it may be determined that there are playback devices 510 to be tested in the playback device group 510 to be tested that do not meet the test requirements.

Alternatively, when it is determined that the playback devices to be tested 510 that do not meet the test requirements exist in the playback device to be tested group 500, the playback devices to be tested 510 may be divided into two groups, and each group of playback devices to be tested 510 may be tested separately. For example, if the number of the to-be-tested playing device groups 510 is 20, the 20 to-be-tested playing devices 510 may be divided into two groups of 10, and the two groups are tested to determine which group has the to-be-tested playing devices 510 that do not meet the test requirement. Similarly, if it is determined that the to-be-tested playing devices 510 that do not meet the test requirements exist in the to-be-tested playing device groups 500 of 10 groups, the to-be-tested playing devices 510 of 10 groups may be subdivided into 5 groups of 5 groups, and the to-be-tested playing device groups 500 of 5 groups may be tested again until the to-be-tested playing devices 510 that do not meet the test requirements are picked up. Alternatively, the defective products may be determined by analyzing the frequency of the sound production file.

And S340, if the intensity of the sound signal is smaller than or equal to the preset intensity, judging that the playing equipment group to be tested meets the test requirement.

Because the opposite signals with the same phase can cancel each other, in general, the sound collecting device 200 collects the spatial noise signal of the test space, the noise signal of the standard playing device set 400 and the noise signal of the playing device set 500 to be tested under this condition, and because the noise signal of the standard playing device set 400 is known and meets the requirements, if the playing performance of the playing device set 500 to be tested is not met, the generated noise signal will be larger, so that the comparison between the intensity of the sound signal collected by the sound collecting device 200 and the preset intensity can be utilized, and further, whether the intensity of the noise signal of the playing device set 500 to be tested meets the test requirements can be judged. When the collected noise signal of the to-be-tested playing device group 500 is lower than the preset noise intensity, the noise signal of the to-be-tested playing device group 500 can be considered to meet the standard, and the test requirement is met.

If the intensity of the sound signal is smaller than the preset intensity, it can be regarded that the noise signal intensity of the playback device set 500 to be tested meets the test requirement. When the plurality of playing devices to be tested 510 are tested, the noise signal intensity of the plurality of playing devices to be tested 510 can be judged to meet the test requirement when the intensity of the sound signal is lower than the preset intensity.

Alternatively, a consistency test may be performed on a plurality of playback devices to be tested 510 whose noise signal strength meets the test requirement in turn. Alternatively, the frequency response test can be performed on the multiple playing devices to be tested 510 with noise signal strength satisfying the test requirement in turn, the test can be performed without adding an independent sound insulation structure, and the test process and the result have stronger noise resistance to a relatively stable noise environment.

In summary, the embodiment can test multiple to-be-tested playing devices 510 simultaneously by using one sound collecting device 200, so that the testing efficiency of testing multiple to-be-tested playing devices can be improved, and the testing cost can be reduced.

The foregoing is only illustrative of the present application and is not to be construed as limiting the scope of the application, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present application and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the application.

Claims

1. A test system, characterized in that it is used to test the wireless signal output performance of an electronic device, and the test system comprises:

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 device group includes a standard playback device group, and the electronic device 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 collection device; and 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 it is applied to the test system according to any one of claims 1 to 7, and is used to test the wireless signal output performance of the electronic device, the method comprising:

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 collection device; and 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 it is applied to the test system according to claim 8 and is used to test the wireless signal output performance of the electronic device, the method comprising: