摘要
设计一种基于CAN总线的智能型温湿度数据在线采集系统。该系统主要由两大模块构成:现场数据采集模块和USB-CAN转换接口模块。现场数据的采集是以AT89S52单片机为核心控制单元,外接温度传感器AD590和湿度传感器HM1500,通过CAN总线控制器SJA1000将数据发送到CAN总线上;USB-CAN转换接口模块是以ATmega 162芯片为控制单元,外接FT245BM USB通信芯片及SJA1000控制器,实现USB-CAN接口转换。整个系统的终端设备为监控PC机,用户软件采用VC++语言编写,可以实现现场状态监控、上下限报警和中断接收数据管理等功能。
An intelligent online acquisition system for humidity and temperature is designed. The system is mainly constituted by two modules：field data acquisition module and USB-CAN converter interface module. Field data collection is based on single chip AT89S52 as the core control unit, ADS90 temperature sensor and humidity sensor HM1500 as auxiliary devices. The data is sent CAN bus by the controller SJA1000. USB- CAN converter interface module is based on ATmega 162 chip as the control unit,FT245BM USB communications chip and SJA1000 controllers as auxiliary devices. Then, USB- CAN interface conversion has been achieved. The terminal device of the entire system is the monitoring PC. Client software is written by VC^＋＋ language, and it can achieve the monitoring for status in field,alarming for the site of upper or lower limits, management of the receiving data for disruption and so on.
出处
《现代电子技术》
2010年第1期126-128,共3页
Modern Electronics Technique
