便携式多功能检测器设计

以单片机AT89C51为核心,设计了一个用于建筑物内温度、湿度、有害气体浓度等参数采集、存储、显示的多功能数字显示表。该系统硬件部分包括温度、湿度、有害气体的浓度检测电路、接口电路、键盘显示器接口电路等,外接并行I/O接口、A/D转换接口等;软件设计部分采用模块化结构,主要模块有中断服务程序、给定值计算程序、采样程序、数字滤波程序等。采用便携式多功能显示表来对这些参数信号进行检测,不仅具有体积小、简单灵活、灵敏度高、携带方便的优点而且检测精度高。稍加改造,该系统还可以用于其他参数的处理。

The design of portable intelligent multi-function detection instrument

Based on the single-chip microcomputer,designed a portable multi-function digital demonstration instrument for gathering ,storing and demonstrating the temperature,humidity and harmful gas density parameter in the building.There are two major parts in the system design :the hardware and the software.The hardware of the design includes:temperature,humidity,noxious gas density detection circuit,connection circuit,keyboard monitor connection circuit and so on;in addition ,the parallel I/O connection ,the A/D transformation connection circuit is designed in detail.The software design part uses the modular structure,The main module includes:the interrupt service program;given value computational program,sampling program;digital filter program and so on.There are many advantages such as the volume is slight,the function is simple and nimble,the sensitivity is high,the method is convenient and so on when detect the temperature,humidity and harmful gas density parameter by the portable multi-function digital demonstration instrument.The system also can be used in other parameters detecttion after changing a little.