在信号变化较慢,采样速率要求不高的高精度数据采集中,选用廉价的高位数双积分式A/D蕊片虽可降低系统造价,但在对多路数据采集并用分时法对各路信号进行A/D转换时,由于其转换速度较低致使采样周期过长,因而不能满足应用的要求。本文介绍一种廉价的多路并行A/D转换的方法,能同时对几十路信号进行高分辨率A/D转换,供读者参考 In the slow signal changes, the sampling rate of less demanding high-precision data acquisition, the use of low-cost high-order dual-integral type A / D chip although the system can reduce the cost, but in the multi-channel data acquisition and time-sharing Road signal A / D conversion, due to its lower conversion speed resulting in the sampling period is too long, which can not meet the application requirements. This article describes an inexpensive multi-channel parallel A / D conversion method that can dozens of high-resolution A / D signals simultaneously for readers reference