题目：压力传感器数据采集
摘要
压力传感器是自动控制中使用最多的测量装置之一。在大型的化工项目中,几乎包含了所有压的应用:差压、绝压、表压、高压、微差压、高温、低温,以及各种材质及特殊加工的远传法兰式压力。近年来压力传感器在市场上大热，在各类消费产品中都可以看到传感器的应用，既丰富了产品的功能
又提高了产品的方便性和易用性，成为吸引消费者关注的新亮点。压力传感
器具有全密封不锈钢焊接结构、小体积、高灵敏度、零点满度可调节应可用
于液压、压铸、中央空调系统、恒压供水、机车制动系统轻工、机械、冶金、石化、环保、空压机等其他自动控制系统。
无线技术能在短距离内用发射、接收模块代替有线电缆的连接。本文给
出了一种基于无线技术的智能压力传感器数据采集系统,由数据采集发射端
和接收端两部分组成。主要介绍了硬件结构设计、软件系统工作流程及测试
结果,并且应用多项式标准化拟合的方法对压力值作了热零点漂移补偿,提高
了传感器的测量精度及温度稳定性。该系统可以在一些特殊的场所实现信号
的采集、处理和发送,解决了复杂的现场连线,并且具有成本低、可靠性好、
实用性强等优点。
关键词：压力传感器无线技术数据采集
Abstract
Pressure sensor is one of the most frequently used measuring devices in automatic control. In large-scale chemical projects, including almost all the pressure sensor application: differential pressure, absolute pressure, gauge pressure, high pressure, differential pressure, high
temperature, low temperature, and a variety of materials and special processing transmission flange type pressure sensor. In recent years, pressure sensor in the market hot, in a wide range of consumer products can see sensor application, not only enrich the functions of the product and improve the products of the convenience and ease of use, become to attract consumer attention, a new bright spot. The pressure sensor has the whole sealing stainless steel welded structure, small volume, high sensitivity, zero full adjustable should be used for hydraulic,
die-casting, central air-conditioning system, constant pressure water supply, locomotive brake system light industry, machinery, metallurgy, petrochemical, environmental protection, air compressor and other automatic control system.
Wireless technology can be used in a short distance to transmit and receive module instead of cable connection. In this paper, a data acquisition system based on wireless technology is presented, which is composed of two parts, the transmitter and receiver. This paper mainly introduces the hardware structure design, software system work flow and test results, and applies the method of polynomial fitting. The thermal zero drift compensation is used to improve the measurement accuracy and temperature stability of the sensor. The system can realize the signal acquisition, processing and transmission in some special places, which can solve the complicated scene connection, and has the advantages of low cost, good reliability and strong practicability.
Key words: pressure sensor, wireless technology, data collection
目录
一、实验目的................................. 错误!未定义书签。
二、实验条件................................. 错误!未定义书签。
开发软件................................. 错误!未定义书签。
实验设备................................. 错误!未定义书签。
三、实验设计原理与步骤....................... 错误!未定义书签。
压力传感器信号采集设计原理............. 错误!未定义书签。
传感器的选用条件....................... 错误!未定义书签。
压力传感器的特点....................... 错误!未定义书签。
A/D转换原理............................ 错误!未定义书签。
无线发射部分........................... 错误!未定义书签。
无线接收部分........................... 错误!未定义书签。
软件部分设计........................... 错误!未定义书签。
四、实验结果分析及总结....................... 错误!未定义书签。参考文献.......................................... 错误!未定义书签。
