文献类型：专利

英文题名：Building component prestressed tension automatic detecting AD converting circuit, has conversion chip that is connected with optical coupler

作者：XIA Y;LIU J;ZHAO W;HUANG Y;HU J

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN206775484-U

申请日：2017-04-06

公开日：2017-12-19

语种：英文

收录：DERWENT

摘要：NOVELTY - The utility model claims an AD conversion circuit, specifically relates to a building component prestressed tension automatic detection AD conversion circuit, for converting the voltage signal into frequency signal comprises A/D conversion chip. A/D conversion chip of the -IN pin through the 20k resistor AR38 is connected to the voltage input end, + IN pin is grounded through the 1k resistor AR39b, the VOUT pin and 2-methyl-3-chlorphenyl pin is connected with a capacitor AC26 of 1000pf, Cos pin through 100p capacitor AC28 is grounded; omega)).function.out pin is connected with one optical coupler and outputting the IO port of the single chip machine, and the A/D transformation chip adopts a 15V bipolar power supply. The utility model not only can do the F/V conversion also can be V/F conversion, the sampling time can satisfy the width number of accumulated pulse output frequency resolution to the resolution of the conversion mode can be infinitely high, it has high resolution, low power consumption and so on.