CN215984840U

CN215984840U - A2B test box

Info

Publication number: CN215984840U
Application number: CN202121844601.2U
Authority: CN
Inventors: 沈生猛; 张平; 唐远华
Original assignee: Dongguan Huaze Electronic Technology Co ltd
Current assignee: Dongguan Huaze Electronic Technology Co ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-03-08
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses an A2B test box, which comprises a shell, a rear interface cover plate, a front interface cover plate, a main PCBA plate and an LED display plate, wherein the shell is formed by fixedly connecting an upper cover and a lower cover, the shell is of a cavity structure with openings at the front end and the rear end and hollow inside, the rear interface cover plate is arranged at the opening at the rear end of the shell, the rear interface cover plate is connected with the shell through a rear cover plate screw, the front interface cover plate is arranged at the opening at the front end of the shell and is connected with the shell through a front cover plate screw, the main PCBA plate and the LED display plate are arranged in the shell, the main PCBA plate is electrically connected with the LED display plate, a plurality of LED lamps are arranged on the LED display plate, and penetrate through the front interface cover plate and extend to the outer side of the front cover plate. The utility model has simple structure, is convenient for the test and the functional verification of the A2B product, can conveniently and visually demonstrate in Demo and can highlight the advantages of the A2B product.

Description

A2B test box

Technical Field

The utility model relates to the technical field of A2B product testing, in particular to an A2B testing box.

Background

With the development of automobile technology, people rely on household automobiles, and the requirements on the use environment of the automobiles are higher and higher. A quiet driving space is more and more urgent, the comfort level of an automobile is greatly improved due to the addition of active noise reduction, and the active noise reduction mainly adopts an on-automobile microphone ANC & RNC noise reduction technology. The increasing number of microphones required the A2B data bus solution is becoming more and more popular in vehicles. In response to the requirement of using the products of the A2B class in the field of automobiles, the products of the A2B microphone and the vibration sensor class are digital output, can not be directly tested in production, can not be intuitively demonstrated in Demo, generally needs a host computer of a third party to complete the work, and the existing A2B testing instrument is very expensive. Therefore, it is necessary to design an A2B test case of the A2B related product.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an A2B test box which has the advantages of simple structure, convenience in test and functional verification of an A2B product, convenience and intuition in Demo demonstration, capability of highlighting the advantages of the A2B product and capability of solving the problems brought forward by the technical background.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a A2B test box, shows the board including casing, back interface apron, preceding interface apron, main PCBA board and LED, the casing is formed by upper cover and lower cover fixed connection, and the casing has the inside hollow cavity structures of opening for both ends around, back interface apron sets up at the rear end opening part of casing, and back interface apron passes through the back shroud screw and is connected with the casing, preceding interface apron sets up the front end opening part at the casing to be connected with the casing through the front shroud screw, main PCBA board and LED show the board setting in the casing, main PCBA board and LED show board electric connection, LED shows to be provided with a plurality of LED lamps on the board, and is a plurality of the LED lamp runs through preceding interface apron to extend to the front interface apron outside.

Preferably, the upper cover and the lower cover are both provided with anti-skid grains.

Preferably, the rear interface cover plate is provided with a power supply interface and a plurality of communication interfaces, and the plurality of communication interfaces and the power supply interface penetrate through the rear interface cover plate from outside to inside and are connected with the main PCBA.

Preferably, the plurality of communication interfaces at least comprise a TYPE-C interface, an ADI-USBi interface, a TDM output interface, an A2B input interface and a 3.5 audio output interface which are arranged from left to right in sequence.

Preferably, the inner side of the front interface cover plate is provided with a fixing column, the fixing column is plugged with the LED display board and then locked with a fixing column nut, the outer side of the front interface cover plate is provided with a switch key and a plurality of audio input interfaces, and the switch key and the plurality of audio input interfaces penetrate through the front interface cover plate from outside to inside and then are connected with the main PCBA board.

Preferably, the main PCBA board at least comprises a main control MCU, a digital processing module, an A2B management module, a DAC data acquisition module and an ADC audio output module, the main control MCU is in communication connection with the digital processing module, the A2B management module, the DAC data acquisition module and the ADC audio output module through an I2C bus, respectively, and the A2B management module is connected with an A2B input interface.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model provides an A2B test box, which comprises a shell, a rear interface cover plate, a front interface cover plate, a main PCBA plate and an LED display plate, wherein the whole structure is simple, when an audio input interface is connected with an A2B microphone or vibration sensor device to be tested, a main control MCU on the main PCBA plate can automatically initialize the A2B microphone or vibration sensor device to be tested and control the operation of the microphone or vibration sensor device, an LED lamp on the LED display plate can be turned on during the operation, the quality of the A2B test product is judged through the LED lamp, the requirement that a user can conveniently and intuitively perform demonstration when Demo is met, and the advantages of the A2B product are highlighted.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a block diagram of the present invention;

FIG. 3 is a rear view of the present invention;

fig. 4 is a schematic block diagram of the present invention.

The reference numerals and names in the figures are as follows:

1. a housing; 11. an upper cover; 12. a lower cover; 2. a rear interface cover plate; 21. a power supply interface; 22. a communication interface; 221. a TYPE-C interface; 222. an ADI-USBi interface; 223. a TDM output interface; 224. an A2B input interface; 225. 3.5 audio output interface; 3. a front interface cover plate; 31. fixing a column; 32. a fixed column nut; 33. switching a key; 34. an audio input interface; 4. a main PCBA board; 41. a main control MCU; 42. a digital processing module; 43. A2B management module; 44. a DAC data acquisition module; 45. an ADC audio output module; 46. an I2C bus; 5. an LED display panel; 6. anti-skid lines; 7. a rear cover plate screw; 8. a front cover plate screw; 9. an LED lamp.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, an embodiment of the present invention includes: A2B test box comprises a shell 1, a rear interface cover plate 2, a front interface cover plate 3, a main PCBA plate 4 and an LED display plate 5, wherein the shell 1 is formed by fixedly connecting an upper cover 11 and a lower cover 12, the shell 1 is of a cavity structure with openings at the front end and the rear end, the interior of the cavity structure is hollow, the rear interface cover plate 2 is arranged at the rear end opening of the shell 1, the rear interface cover plate 2 is connected with the shell 1 through a rear cover plate screw 7, the front interface cover plate 3 is arranged at the front end opening of the shell 1 and is connected with the shell 1 through a front cover plate screw 8, the main PCBA plate 4 and the LED display plate 5 are arranged in the shell 1, the main PCBA plate 4 is electrically connected with the LED display plate 5, a plurality of LED lamps 9 are arranged on the LED display plate 5, the LED lamps 9 penetrate through the front interface cover plate 3 and extend to the outer side of the front interface cover plate 3, when the A2B test box is connected with a tested A2B product, a plurality of the LED lamps 9 can be lighted to display the test result, so that the user can conveniently check the test result.

Specifically, the upper cover 11 and the lower cover 12 are both provided with anti-skid grains 6.

Specifically, the rear interface cover plate 2 is provided with a power supply interface 21 and a plurality of communication interfaces 22, the plurality of communication interfaces 22 and the power supply interface 21 penetrate through the rear interface cover plate 2 from outside to inside and are connected with the main PCBA plate 4, the plurality of communication interfaces 22 at least comprise a TYPE-C interface 221, an ADI-USBi interface 222, a TDM output interface 223, an A2B input interface 224 and a 3.5 audio output interface 225 which are sequentially arranged from left to right, wherein the power supply interface 21 is used for connecting direct current 4.5V-9V voltage, the TYPE-C interface 221 is used as a PC USB digital interface, meanwhile, a USB can be used as a power supply, the ADI-USBi interface 222 is used for connecting an ADI simulator interface, the TDM output interface 223 is used for outputting TDM signals of a detected A2B product, the A2B input interface 224 is used for connecting detected A2B equipment, and the 3.5 audio output interface 225 is used for connecting a 3.5 earphone to monitor output audio.

Specifically, the inner side of the front interface cover plate 3 is provided with a fixing column 31, the fixing column 31 is plugged with the LED display panel 5 and then locked with a fixing column nut 32, the outer side of the front interface cover plate 3 is provided with a switch button 33 and a plurality of audio input interfaces 34, the switch button 33 and the plurality of audio input interfaces 34 penetrate through the front interface cover plate 3 from outside to inside and then are connected with the main PCBA plate 4, the plurality of audio input interfaces 34 are uniformly distributed on the front interface cover plate 3, and the plurality of audio input interfaces 34 are used for connecting a plurality of detected A2B devices.

Referring to fig. 4, the main PCBA board 4 at least includes a main control MCU41, a digital processing module 42, an A2B management module 43, a DAC data acquisition module 44, and an ADC audio output module 45, the main control MCU41 is respectively connected to the digital processing module 42, the A2B management module 43, the DAC data acquisition module 44, and the ADC audio output module 45 through an I2C bus 46, the A2B management module 43 is connected to an A2B input interface 224, wherein the digital processing module 42 is configured to convert a digital signal received by the main control MCU41 into a format required by the ADC audio output module 45, the A2B management module 43 is configured to analyze an audio signal input by the A2B input interface 224 and transmit the audio signal to the digital processing module 42, the DAC data acquisition module 44 converts a 4ch audio input into a digital signal, and may connect the MIC audio input to the digital processing module 42 and A2B device to be detected, the ADC audio output module 45 converts the digital audio signal into an 8ch analog audio signal to be output, for headphone listening or audio device analysis testing.

It should be noted that, in this embodiment, the model of the main control MCU41 is NUC123, the main control MCU41 of this model has a communication protocol of USB2.0 and Audio digital input and output, and can convert an external Audio into a USB Audio to record a sound to a computer or perform performance analysis by cooperating with Audio analysis software, and the main control MCU41 controls the operations of the digital processing module 42, the A2B management module 43, the DAC data acquisition module 44, and the ADC Audio output module 45 through the I2C bus 46.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An A2B test cassette characterized by: the LED display board comprises a shell (1), a rear interface cover plate (2), a front interface cover plate (3), a main PCBA board (4) and an LED display board (5), wherein the shell (1) is formed by fixedly connecting an upper cover (11) and a lower cover (12), the shell (1) is of a cavity structure with openings at the front end and the rear end, the interior of the cavity structure is hollow, the rear interface cover plate (2) is arranged at the rear end opening of the shell (1), the rear interface cover plate (2) is connected with the shell (1) through a rear cover plate screw (7), the front interface cover plate (3) is arranged at the front end opening of the shell (1) and is connected with the shell (1) through a front cover plate screw (8), the main PCBA board (4) and the LED display board (5) are arranged in the shell (1), the main PCBA board (4) is electrically connected with the LED display board (5), a plurality of LED lamps (9) are arranged on the LED display board (5), and the plurality of LED lamps (9) penetrate through the front cover plate (3), and extends to the outer side of the front interface cover plate (3).

2. An A2B test cassette of claim 1, wherein: the upper cover (11) and the lower cover (12) are both provided with anti-skid grains (6).

3. An A2B test cassette of claim 1, wherein: the rear interface cover plate (2) is provided with a power supply interface (21) and a plurality of communication interfaces (22), and the communication interfaces (22) and the power supply interface (21) penetrate through the rear interface cover plate (2) from outside to inside and are connected with the main PCBA plate (4).

4. A2B test cassette of claim 3, wherein: the communication interfaces (22) at least comprise a TYPE-C interface (221), an ADI-USBi interface (222), a TDM output interface (223), an A2B input interface (224) and a 3.5 audio output interface (225) which are arranged from left to right in sequence.

5. An A2B test cassette of claim 1, wherein: the LED display panel is characterized in that a fixing column (31) is arranged on the inner side of the front interface cover plate (3), the fixing column (31) is connected with the LED display panel (5) in an inserting mode and then locked with a fixing column nut (32), a switch key (33) and a plurality of audio input interfaces (34) are arranged on the outer side of the front interface cover plate (3), and the switch key (33) and the plurality of audio input interfaces (34) penetrate through the front interface cover plate (3) from outside to inside and then are connected with the main PCBA panel (4).

6. An A2B test cassette of claim 1, wherein: the main PCBA board (4) is at least composed of a main control MCU (41), a digital processing module (42), an A2B management module (43), a DAC data acquisition module (44) and an ADC audio output module (45), the main control MCU (41) is in communication connection with the digital processing module (42), the A2B management module (43), the DAC data acquisition module (44) and the ADC audio output module (45) through an I2C bus (46), and the A2B management module (43) is connected with an A2B input interface (224).