Television board card test device

A test device and board technology, applied in the field of testing, can solve the problems of waste of resources, high cost, irrecoverable damage to the screen of the whole machine, etc., and achieve the effect of solving high cost

Active Publication Date: 2017-10-24
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The TV board is tested by connecting the whole TV. On the one hand, during the test, the test environment needs to be too high or too low as required, which will cause irreversible damage to the whole screen, so the cost is high and the resources are wasted seriously; on the other hand On the one hand, only from the video display to observe whether there is a problem with the TV board is to judge whether there is a problem with the TV board based on the subjective consciousness of the tester, and cannot accurately judge the performance of the TV board

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] figure 1 It is a schematic structural diagram of a TV board testing device provided in Embodiment 1 of the present invention. The TV board test device 100 includes: a screen interface 120 , an electronic load 110 and an MCU 130 .

[0021] Among them, the electronic load 110 includes a load regulation terminal CON, a power input terminal Vin and a sampling terminal OUT; the MCU includes a voltage output terminal A, a collection input terminal B, an external communication interface C and a signal detection terminal D.

[0022] The screen interface 120 is used for connecting the TV board 200 to be tested.

[0023] The signal detection terminal D of the MCU 130 is connected to the screen interface to receive the power signal or video signal output by the TV board 200 to be tested.

[0024] The voltage output terminal A of the MCU 130 is connected to the load regulation terminal CON of the electronic load 110, and outputs a control voltage corresponding to the signal recei...

Embodiment 2

[0031] figure 2 It is a schematic structural diagram of a TV board testing device provided in Embodiment 2 of the present invention. The TV board test device has all the technical features of the TV board test device 100 in Embodiment 1, and also includes: a first ADC collector 140, an FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) 150, The second ADC collector 170 and the display screen 160 . Among them, the ADC collectors 140 and 170 are electronic devices for converting input analog electrical signals into digital electrical signals for output.

[0032] The signal detection terminal D of the MCU 130 in this embodiment receives both the power signal and the video signal from the screen interface, that is, it includes a detection terminal D1 for receiving the power signal and a detection terminal D2 for receiving the video signal. In this embodiment, the MCU 130 judges the type of the whole machine connected to the TV board 200 according to the power s...

Embodiment 3

[0042] Figure 4 It is a schematic structural diagram of a TV board testing device provided in Embodiment 3 of the present invention. The difference between the TV board test device and the TV board test device provided in Embodiment 2 is that in the TV board test device, the signal detection terminal D of the MCU only receives the video signal from the screen interface, and the MCU according to the TV board test device The video signal output by the board judges the type of the whole machine connected when the TV board 200 is used, and outputs a corresponding control voltage. Therefore, compared with the second embodiment, this embodiment omits the first ADC collector 170 . The FPGA is connected between the screen interface 120 and the detection terminal D2 of the MCU, and the video signal of the TV board card to be tested received by the screen interface 120 is formatted and then output to the signal detection terminal D of the MCU, and the MCU outputs the video signal acco...

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PUM

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Abstract

The present invention discloses a television board card test device. The device comprises a screen interface, an electronic load and an MCU. The screen interface is configured to connect a television board card to be measured; and the signal detection end of the MCU is connected with the screen interface, the voltage output end of the MCU is connected with the load regulation end of the electronic load, the power input end of the electronic load is connected with the screen interface, the sampling end of the electronic load is connected with the collection input end of the MCU, and the external communication interface of the MCU is configured to connect with a computer. The television board card test device can break away from the whole machine to perform reliability test of the television board card, can monitor the electrical signal features of the television board card on the work process and can accurately determine the performances of the television board card.

Description

technical field [0001] The invention relates to testing technology, in particular to a TV board testing device. Background technique [0002] TV boards, such as TV boards used to provide power and video signals for home TVs, commercial displays, and smart interactive panels, need to undergo aging, high and low temperature, and temperature shock tests before leaving the factory to ensure the reliability of TV boards. Sex is high enough. [0003] In the prior art, the reliability test of the TV board is to judge whether there is a problem with the TV board by connecting the TV board to the whole TV set and observing the display of the video. [0004] The TV board is tested by connecting the whole TV. On the one hand, during the test, the test environment needs to be too high or too low as required, which will cause irreversible damage to the whole screen, so the cost is high and the resources are wasted seriously; on the other hand On the one hand, observing whether there is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/28
CPCG01R31/2825
Inventor 康延光
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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