基于BMP085的精密数字气压计设计

为克服现有常规数字气压计结构繁琐,成本高等缺陷,提出了一种基于BMP085数字气压传感器的精密数字气压计设计方案,并完成系统的软硬件设计。硬件设计部分采用单片机为主控芯片,对传感器采集的气压和温度信息经处理后进行数据显示。软件部分采用C语言编程。此设计能同时检测气压和温度,具备低功耗,低成本,小型化,温度显示与报警等优点。测试表明,温度测试精度可达1%,气压测试精度可达0.1%。

Design of a precise digital barometer based on BMP085

To simplify the complex structure of conventional digital barometer and reduce its high cost, a digital Barometer based on the precise digital pressure sensor BMP085 is proposed in this paper. The hardware applies a single chip microcom- puter as the main control chip to process the pressure and temperature information collected by the sensors in this design, and results are finally displayed on the LCD. The software system adopts the C language for programming environment. This design provides a kind of digital barometer design that can detect pressure and temperature simultaneously, and possesses many advantages such as low power consumption, low cost, compact, high accuracy, temperature display and alarm. It is showed that temperature precision of 1%, pressure precision of 0.1% can be achieved from the measurements.