CN206226724U - A kind of loudspeaker box testing device - Google Patents

Abstract

The utility model provides a sound box testing device, which comprises a first connection terminal, an overcurrent protection module, a comparator, a rectifier circuit, a power transformer, an input power supply, a single chip microcomputer, an infrared receiving module, a button control module, a digital display module, and a relay switch and the second connection terminal, the first connection terminal is connected with the overcurrent protection module and the relay switch respectively, the overcurrent protection module is connected with the comparator, the comparator is connected with the single-chip microcomputer, and the single-chip microcomputer is respectively connected with the The infrared receiving module, the button control module, the digital display module are connected with the relay switch, the relay switch is connected with the second connection terminal, the input power is connected with the power transformer, the power transformer is connected with the rectifier circuit, and the rectifier The circuit is respectively connected with a single chip microcomputer, an overcurrent protection module and a comparator. In summary, the utility model not only has simple structure, fast test speed, convenient control, but also multiple functions.

Description

A speaker testing device

technical field

The utility model relates to the technical field of sound box testing equipment, in particular to a sound box testing device.

Background technique

The speaker is the terminal of the entire audio system, and its function is to convert audio power into corresponding sound energy and radiate it into the space. It is an extremely important part of the audio system, because it is responsible for the key task of converting electrical signals into acoustic signals for human ears to listen directly to. It has to deal directly with human hearing, which is very sensitive. And it has a strong ability to distinguish the timbre of complex sounds. Since the human ear's subjective experience of sound is the most important criterion for evaluating the sound quality of an audio system, it can be considered that the performance of the speaker plays a key role in the playback quality of an audio system.

In the prior art, speaker test devices can only test speakers, generally there is only one input terminal and one output terminal, so that only one speaker can be tested at a time during the test, and multiple speakers cannot be tested at one time. If the speaker is tested by the existing test device, the test speed will be very slow, which cannot meet the factory test requirements, and the test device can only be controlled by the button to switch the test device, making the control very inconvenient during the test.

Utility model content

The purpose of the utility model is to provide a sound box testing device with simple structure, fast testing speed, convenient control and various functions.

In order to achieve the above object, the utility model provides the following technical solutions:

A speaker testing device, comprising a first connection terminal, an overcurrent protection module, a comparator, a rectifier circuit, a power transformer, an input power supply, a single-chip microcomputer, an infrared receiving module, a button control module, a digital display module, a relay switch and a second connection terminal , the first connecting terminal is connected with the overcurrent protection module and the relay switch respectively, the overcurrent protection module is connected with the comparator, the comparator is connected with the single-chip microcomputer, and the single-chip microcomputer is respectively connected with the infrared receiving module, the button The control module, the digital display module are connected with a relay switch, the relay switch is connected with the second connection terminal, the input power supply is connected with a power transformer, and the power transformer is connected with a rectifier circuit, and the rectifier circuit is connected with a single chip microcomputer, a The overcurrent protection module is connected with the comparator.

Further, the model of the power transformer is EI48.

Further, the button control module includes a switch button, a mute button, a first button for switching the previous signal interface, and a second button for switching the next signal interface.

Further, an infrared remote controller is also included, and the infrared remote controller controls the single-chip microcomputer through the infrared receiving module.

Further, the infrared remote controller is provided with a switch button, a mute button, a previous signal switch button, a next signal switch button, a first sound signal output button, a second sound signal output button, a third sound signal output button and The fourth sound signal output button.

Further, the first connecting terminal includes a first left channel signal input and output interface and a first right channel signal input and output interface, and the second connecting terminal includes a second left channel signal input and output interface, a third left Channel signal input and output interface, fourth left channel signal input and output interface, fifth left channel signal input and output interface, second right channel signal input and output interface, third right channel signal input and output interface, fourth right channel signal input and output interface, A channel signal input and output interface and a fifth right channel signal input and output interface.

The beneficial effects of the utility model are: by setting the first connection terminal, which includes the first left channel signal input and output interface and the first right channel signal input and output interface, the first connection terminal can be connected to an audio signal, through After the current protection module, comparator, single-chip microcomputer and relay switch, output through the second terminal, and the second terminal can be connected to four speakers to output the audio signal. In this way, the switching button of the button control module can be used to switch the audio signal during the test. Output from the four speakers, so that the quality of the four speakers can be quickly tested; and an infrared receiving module and a remote control are also provided, so that the speaker test device can be controlled remotely without using the button control module, so that people can It is more convenient to control the speaker testing device; the utility model can not only test the speaker, but also test the sound quality of different audio signals. By connecting the speaker to the first terminal, four different audio signal quality can be connected to the second connection Terminals, so that different sound quality can be tested from the same speaker output, and the connection can test the quality of different sound quality. In summary, the utility model not only has simple structure, fast test speed, convenient control, but also multiple functions.

Description of drawings

Fig. 1 is a block diagram of the utility model;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is a schematic structural view of the utility model during testing.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

A speaker testing device as shown in Figures 1 to 3, comprising a first terminal 1, an overcurrent protection module 2, a comparator 3, a rectifier circuit 4, a power transformer 5, an input power supply 6, a single-chip microcomputer 7, and an infrared receiving module 13. Button control module 14, digital display module 15, relay switch 8 and second connection terminal 9, the first connection terminal 1 is connected to the overcurrent protection module 2 and the relay switch 8 respectively, and the overcurrent protection module 2 Be connected with comparator 3, described comparator 3 is connected with single-chip microcomputer 7, and described single-chip microcomputer 7 is connected with infrared receiving module 13, button control module 14, digital display module 15 and relay switch 8 respectively, and described relay switch 8 With the second connection terminal 9, the input power supply 6 is connected with the power transformer 5, and the power transformer 5 is connected with the rectifier circuit 4, and the rectifier circuit 4 is respectively connected with the single chip microcomputer 7, the overcurrent protection module 2 and the comparator 3 The first connection terminal 1 includes a first left channel signal input and output interface 11 and a first right channel signal input and output interface 12, and the second connection terminal 9 includes a second left channel signal input and output interface 91. The third left channel signal input and output interface 92, the fourth left channel signal input and output interface 93, the fifth left channel signal input and output interface 94, the second right channel signal input and output interface 95, the third right sound channel signal input and output interface 96, the fourth right channel signal input and output interface 97 and the fifth right channel signal input and output interface 98.

Further, the model of the power transformer 5 is EI48.

Further, the button control module 14 includes a switch button 16, a mute button 17, a first button 18 for switching the previous signal interface, and a second button 19 for switching the next signal interface.

Further, an infrared remote controller 20 is also included, and the infrared remote controller controls the single-chip microcomputer 7 through the infrared receiving module 13 .

Further, the infrared remote controller 20 is provided with a switch button, a mute button, a previous signal switching button, a next signal switching button, a first sound signal output button, a second sound signal output button, and a third sound signal output button and the fourth sound signal output button.

During the test, through the first connection terminal 1 provided, which includes the first left channel signal input and output interface 11 and the first right channel signal input and output interface 12, the first connection terminal 1 can be connected to an audio signal, and after The current protection module 2, the comparator 3, the single-chip microcomputer 7 and the rear switch 8 of the relay are output through the second terminal 9, and the second terminal 9 can be connected to four speakers to output the audio signal, so that the switching of the module 14 is controlled by the button during the test. button, which can switch the output of the audio signal from the four speakers, so that the quality of the four speakers can be quickly tested; and an infrared receiving module 13 and a remote controller 20 are also provided, so that the remote control module can be remotely controlled without using buttons. The speaker test device is controlled, so that people can control the speaker test device more conveniently; the utility model can not only test the speaker, but also test the sound quality of different audio signals. By connecting the speaker to the first terminal, four different The sound quality of the audio signal is connected to the second connection terminal, so that different sound quality can be tested from the same speaker output, and the connection can test the quality of different sound quality. To sum up, this embodiment not only has simple structure, fast test speed, convenient control, but also multiple functions.

The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the scope of the technical solution of the present invention.

Claims (6)

1. A sound box testing device, characterized in that: comprising the first connection terminal, overcurrent protection module, comparator, rectifier circuit, power transformer, input power supply, single-chip microcomputer, infrared receiving module, button control module, digital display module, relay A switch and a second connection terminal, the first connection terminal is respectively connected with an overcurrent protection module and a relay switch, the overcurrent protection module is connected with a comparator, the comparator is connected with a single-chip microcomputer, and the single-chip microcomputer is respectively It is connected with the infrared receiving module, the button control module, the digital display module and the relay switch, the relay switch is connected with the second connection terminal, the input power supply is connected with the power transformer, the power transformer is connected with the rectifier circuit, and the The rectification circuit is respectively connected with the single chip microcomputer, the overcurrent protection module and the comparator. 2. A sound box testing device according to claim 1, characterized in that: the model of the power transformer is EI48. 3. A sound box testing device according to claim 1, characterized in that: the button control module includes a switch button, a mute button, a first button for switching the last signal interface and a button for switching the next signal interface of the second button. 4 . The sound box testing device according to claim 1 , further comprising an infrared remote controller, and the infrared remote controller controls the single-chip microcomputer through an infrared receiving module. 5. A sound box testing device according to claim 4, characterized in that: said infrared remote controller is provided with a switch button, a mute button, a previous signal switch button, a next signal switch button, a first sound signal output button, a second sound signal output button, a third sound signal output button and a fourth sound signal output button. 6. A sound box testing device according to claim 1, characterized in that: said first connection terminal comprises a first left channel signal input and output interface and a first right channel signal input and output interface, said second The connection terminal includes the second left channel signal input and output interface, the third left channel signal input and output interface, the fourth left channel signal input and output interface, the fifth left channel signal input and output interface, the second right channel signal input output interface, the third right channel signal input and output interface, the fourth right channel signal input and output interface and the fifth right channel signal input and output interface.