球墨铸铁件水冷温控系统的设计与研究6.doc

毕业设计（论文） 球墨铸铁件水冷温控系统的设计与研究 摘 要 对工件的水处理温度要求严格控制。对于不同控制系统，其适宜的水质温度总是在一个范围。超过这个范围，系统或许会停止运行或遭受破坏，所以我们必须能实时获取温度变化。 本文介绍的球墨铸铁件水冷温控系统，基于传感器原理，由NRF241L01通信感应电路、电动阀电路、显示模块，自检电路等组成。该系统设置了上位机和下位机进行通信的交换，当物体温度达到感应区域内时，下位机里的温度传感器通过nRF241L01通信发出无限信号，通过集成线路内的微电脑处理后信号发送给脉冲电动阀，电动阀接受信号后按指定的指令打开阀门来控制喷水口出水；反之则自动关闭水源。且系统设有自检模块，当系统发生故障时，装置面板上的指示灯会闪烁，蜂鸣器报警。上位机的显示模块能够显示当前工作状态物件的温度。 关键词：无线数据传输 89C52单片机 多点温度采集 Abstract The water temperature requirements of strict control of workpiece. For the different control system, the suitable water temperature is in a range of. Beyond this range, the system may stop running or destroyed, so we must be able to obtain the real-time temperature changes. Design and development of inductive water valve is described in this paper, based on the principle of the sensor, the nRF241L01 communication circuit, the electric valve circuit, display module, self checking circuit. Exchange the system sets the upper and lower bit machine communication, when the object temperature reaches the induction region, temperature sensor in a lower machine infinite signal through nRF241L01 communication, through the microcomputer processing integrated circuit in the signal to the pulse electric valve, electric valve after receiving signals according to the specified command to open the valve. Control valve outlet; vice versa automatically shut off the water supply. And the system is provided with a self-test module, when a fault occurs, indicating device panel exhibit of lanterns flicker, buzzer alarm. The PC display module can display the current state of the temperature of an object. Water control valve through the design and software of water, the water time. Keywords: wireless data transmission chip 89C52 multipoint temperature collecting 目录 摘要 I 绪论 1 第一章 任务与要求 2 1.1研究背景 2 1.2论文研究目标和意义 2 1.3 论文章节安排 2 第二章 硬件系统相关技术介绍 2 2.1系统总体框架图 2 2.2单片机最小系统电路 4 2.2.1键盘电路 5 2.2.2数码管和指示灯显示电路及报警电路 6 2.3 AT89C52 单片机 8 2.4温度采集模块 11 2.5 NRF24L01无线模块 12 第三章 软件部分 18 3.1报警程序流程 18 3.2键盘扫描程序流程