混凝土空心砖材料冻融测试系统设计

Design of Freeze-thaw Testing System for Concrete Hollow Bricks Materials

基于LabWindows/CVI技术,构建了混凝土空心砖材料冻融测试系统.该系统由温度传感器、压力传感器、单片机、串口通信和计算机组成;采用LabWindows/CVI编程实现了冻融测试程序,可实现包括温度和液位数据的实时采集与分析、历史数据的储存与查询等系统功能.该系统通过采集温度、液位数据,根据设定程序对冻融测试环境进行自动控制.根据国家标准对某空心砖进行规定次数的冻融实验,根据实验结果确定其抗冻标号,验证了系统的可靠性.

Based on LabWindows/CVI technology, a freeze-thaw testing system for concrete hollow brick materials was constructed. It was composed of temperature sensors, pressure sensors, a microcontroller, serial communication, and a computer. With LabWindows/CVI technology, the testing program of freeze-thaw was realized, which achieved the functions of real-time data collection and analysis of temperature, historical data storage and query, etc. By collecting temperature information and level data, it can control the testing environment of freeze-thaw automatically based on default rule. Exprimental results of requsite hollow bricks tests showed that the frost-resistance mark was determined correctly. It shows that the freeze-thaw testing system is realiable.