国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

At present, there is little research on the portable circuit board test device of VI (Voltage-Intensity) curve for aviation equipment, which can not meet the emergency test requirements in the field environment. In order to solve this problem, a design scheme of portable VI curve circuit board test device is proposed, which is placed in the portable case. FPGA(Field Programmable Gate Array) is used as the main control device to design the test board, the excitation signal that can be adjusted by given program, the current signal under various excitation signals is collected, and the voltage and current data are transmitted to the upper computer through USB interface. The upper computer adopts mini industrial control After receiving the data of voltage and current, the computer processes the data and draws the corresponding image information with voltage and current as the horizontal and vertical coordinates on the display screen in real time. The test results show that for different types of impedance components, the device can draw corresponding types of VI curves, so as to identify different states of components. The device is small, light and easy to operate. It can be used in the test and diagnosis of field airborne circuit board.