DS18B20温度测量、报警系统的设计
上传时间： 2014-12-26
上传用户：ZJX5201314
针对盘山路存在的转弯盲区，即在转弯时司机无法得知弯路对面是否有车辆通过，设计一种基于C8051F310的山路转弯预防警示系统。该系统利用一阶滤波算法检测山路转弯时是否有车辆通过。运用该算法可增强系统检测的实时性，提高检测机动车辆的灵敏度，同时大大减少环境温度对检测的干扰。试验表明该系统能够正确指示出在山路转弯时是否有车辆通过，目前该系统已安装在盘山路上，可大大减少事故的发生率。 Abstract: Aiming at passing hilly road，there is a turn blind spot.Motormen usually do not know if the passing of vehicles pass the road.So a system of defending accident on hilly road is designed,which is based on MCU C8051F310.The sys-tem uses the first-order filter algorithm to detect whether there are passing vehicles.This algorithm enhances the real-time detection and improves the sensitivity of detection vehicles.Meanwhile,it reduces the detection interference of environmen-tal temperature.The experimental results show that this system can exactly indicate if there are passing vehicles.At present,the system has been successfully applied to hilly road.The system can greatly decrease accident.
上传时间： 2013-10-10
上传用户：归海惜雪
为满足矿井安全生产要求，介绍了一种以AT89C51单片机为主控器，对环境空气的温度、有毒易燃气体的浓度等进行检测的监控系统。该系统配合外围电路能实现对上述环境指标的控制并存储相关数据与上位PC机通信。它采用硬件抗干扰和软件抗干扰技术，以确保整个系统工作的准确性。 Abstract: In order to meet the needs of mine produce safety，a kind of intellignet mine ambient monotoring and control system based on AT89C51 is introduced.This system can detect the temperature of ambient of mine，the density of poisonous inflammable gas,combined external circuit.With its function part， this system can change above-mentioned elements.
上传时间： 2013-11-10
上传用户：wendy15
介绍一种基于单片机的多路温度采集及监控系统，能够测量6路温度信号，具有计算机联网功能，各测量点可以单独监控和设置，可根据用户的需求自动控制。测量温度范围为-10 ℃～200 ℃，控制方式采用模拟量调压模式。该系统具有控制精度高、冲击小等特点。 Abstract: A temperature collecting and surveillance-controlling system based on sing-chip microcomputer is introduced. It can measure 6 channel signal of the temperature,and it has a function of network connection.The temperature measure points can be monitored and located, it can be controlled automatic according to user’s demand.The temperature range is -10℃ to 200℃.The model of control is adjustable voltage with simulation. It features high precision and little impact.
上传时间： 2013-10-23
上传用户：bjgaofei
为了提高环境参数采集的自动化水平，提升效率，设计了无线传感器系统。本系统运用了传感器技术、通信技术和单片机技术，实现了对环境温度、湿度、光照度以及可燃性气体浓度等参数的检测。它能够实时地与上位机进行无线通信，满足对环境参数实时监测的要求。 Abstract: In order to increase the degree of automation and improve the efficiency of the environment monitoring parameters，the wireless sensor system was developed.Combining with the technique of sensor,automatic monitoring，communication and single-chip microcomputer，it realized real-time monitoring environment parameters,such as temperature，humidity，illumination，concentration of com- bustible gas and so on.At the same time it can communicate with upper personal computers，satisfy the desire of real-time monitoring.
上传时间： 2013-11-22
上传用户：longlong12345678
为解决输油管道温度压力参数实时监测的问题，设计了以C8051F930单片机作为控制核心的超低功耗输油管道温度压力远程监测系统。现场仪表使用高精度电桥采集数据，通过433 MHz短距离无线通信网络与远程终端RTU进行通信，RTU通过GPRS网络与PC上位机进行远程数据传输，在上位机中实现数据存储和图形化界面显示，从而实现输油管道温度压力参数的实时监测和异常报警。经实验证明，该系统的12位数据采集精度满足设计要求，漏码率小于1%，正常工作时间超过5个月，能实时有效地监测输油管道的温度压力参数，节省大量人工成本，有效预防管道参数异常造成的经济损失和环境污染。 Abstract: In order to solve the problems on real-time monitoring of pipeline temperature and pressure parameters， the ultra-low power remote pipeline temperature and pressure monitoring system was designed by using the single chip processor C8051F930 as the control core. The high-precision electric bridge was used in field instruments for data collection， the 433MHz short-range wireless communication network was used to make communication between field instrument and RTU， the GPRS was used by the RTU to transmit data to the PC host computer， and the data was stored and displayed in the PC host computer， so the real-time monitoring and exception alerts of pipeline temperature and pressure parameters were achieved. The experiment proves that the system of which error rate is less than 1% over five months working with the 12-bit data acquisition accuracy can effectively monitor the pipeline temperature and pressure parameters in real time， it saves a lot of labor costs and effectively prevents environmental pollution and economic losses caused by abnormal channel parameters.
上传时间： 2013-11-07
上传用户：cuibaigao
在研究车内有害气体成份的基础上，设计了一个基于PICl6F877A的车内有害气体检测控制系统。对该系统的控制方案、电源电路、复位电路、振荡电路、传感器检测电路、车窗控制电路、语音控制电路和相应的控制软件进行了设计。试验表明，该系统能有效检测车内确定的有害气体成份，并能对车内有害气体浓度进行有效调节，可改善车内空气质量。
上传时间： 2013-11-05
上传用户：lijinchuan
［摘要］系统主要分为两大部分：上位机通过测控管理软件实现对多个库房温度数据的巡回采集、处理、实时显示和控制系统的管理；下位机通过,!-单片机控制各个测温点完成温度转换、发送能调信号并与上位机实现多机通信。此外，各下位机还具有独立显示温度的功能，避免因通信网络故障而造成整个系统的瘫痪。［关键词：PIC单片机；冷库；温度测控
上传时间： 2013-10-18
上传用户：molo
摘要：文章介绍了单片机控制系统温度“数字化”的概念，描述了温度“数字化”与“数字处理”的—般方法的过程与系-e3Ui案，阐述了一种新颖温度“数字化”的思路与方法并归纳了这种方法的主要特点。关键词：温度；数字化；数字处理
上传时间： 2013-11-05
上传用户：lyy1234
摘要:以AT89S52单片机和单总线数字温度传感器DS18B20及步进电机为主要器件制作测控电路。上位机以温度为主要参数,通过串口控制步进电机的正转、反转和加速、减速。C51程序实现对传感器的数据采集和与上位机的串行通信,LabVIEW实现测温波形动态显示、数据存储、越限报警和电机控制。经实际运行,系统能够较好地控制步进电机,可用于需要及时检测温度并进行步进电机控制的场合。关键词:单片机;LabVIEW;DS18B20;步进电机
上传时间： 2013-11-23
上传用户：671145514
