题目基于STC89C52的磁场强度检测计的设计目录1绪论................................................................................................11.1设计背景.................................................................................................................11.2开发现状.................................................................................................................11.3设计的意义与目的...............................................................................................12系统方案设计....................................................................12.1系统运行概述........................................................................................................22.2无线传输模块的选择方案与论证...................................................................22.3微控制器的选择方案与论证.............................................................................33硬件设计..................................................................................43.1无线传输发射端...................................................................................................43.2控制模块.................................................................................................................43.3传感器与ADC0832接口电路.............................................................................73.4ADC0832与单片机接口电路.................................................................................73.5NRF24L01部分........................................................................................................73.5.1NRF24L01简介...............................................................................................73.5.2NRF24L01管脚特性......................................................................................83.5.3单片机与无线模块的接口—SPI总线........................................83.5.4NRF24L01和单片机接口电路...................................................................83.6无线传输接收端...................................................................................................93.7LCD1602与单片机接口电路.................................................................................93.8有线传输部分........................................................................................................103.9RS485传输部分........................................................................................................104单元模块设计.................................................................124.1蜂鸣器报警电路设计..........................................................................................124.2电源自锁开关系统设计......................................................................................124.3按键系统设计........................................................................................................134.4电压调节部分设计...............................................................................................134.5LED状态指示部分设计......................................................................................145系统软件设计.................................................................145.1软件开发环境介绍...............................................................................................145.2系统总体流程图.........................
