一种多位置多时刻同步采样系统设计与实现

基于某外场试验同步采集某装甲车内不同时刻多个位置气体样品的现实需求，依据电磁阀通电开阀断电关阀的工作原理和时间继电器的延时控制原理，运用电磁阀控制一定规格的真空负压采样瓶开始与停止采样、时间继电器控制多条采样线路按预设顺序自动开启采样的方法，采用多点分布式布设方式设计了一款气体采样系统。在预试验过程中，分为分系统测试和系统联调联试两个阶段，对系统工作的稳定性、采样的可靠性进行了全面测试。从测试结果来看，该系统工作稳定、采集的样品可信，样品量能够满足仪器分析需求，采样系统引入的试验误差小，试验结果真实可靠，系统完全能够满足在某行进装甲车内多位置多时刻自动同步采集气体样品的试验需求，为试验顺利实施提供了物质条件，有效解决了密闭空间气体多位置多时刻同步采集难题。

Design and Implementation of a Multi Location and Multi Time Synchronous Sampling System

Based on the realistic demand for simultaneous sampling of gas samples at multiple locations in an armored vehicle in an external field test, according to the working principle of the solenoid valve energizing valve opening and closing valve and the delay control principle of time relay, and using a solenoid valve to control a certain specification of vacuum negative pressure sampling bottle to start and stop sampling, time relay control multiple sampling lines to automatically start sampling in a preset order to design a gas sampling system based on multi-point distributed layout. In the pre-experimental process, it is divided into two stages: sub-system testing and system joint debugging. And the system stability and sampling reliability are tested comprehensively. From the test results, the system works stably, the sample collected is credible, the sample quantity can meet the instrument analysis requirements, the test error introduced by the sampling system is small, and the test result is real and reliable. The system can fully meet the test requirements of automatically collecting gas samples in multiple locations and multiple times in a certain armored vehicle. It provides material conditions for the smooth implementation of the test, and effectively solves the problem of multi-position and multi-time simultaneous acquisition of confined space gas..