无线温湿采集系统设计PPT课件

1、系统总体方案本系统由传感器和发射、接收芯片，以及显示芯片组成。无线发射、接收功能是由nRF905完成。第1页/共15页采集模块硬件电路设计采集模块硬件电路设计本系统采用数字式温湿度传感器SHT10测量温湿度，使用nRF905发送数据。第2页/共15页采集模块硬件电路设计采集模块硬件电路设计123456ABCD654321DCBA标 题图 号修 订尺 寸B日 期 :11-Jun-2010第 张 共 张文 件 :C:Documents and SettingsAdministrator桌 面 无 线 温 度 湿 度 数 据 采 集 CC .ddb制 图 人 :VC CP1.6P1.7R114.7K

2、VC CGND3DATA4SCK1VC C2U4SHT10123456ABCD654321DCBA标 题图 号修 订尺 寸B日 期 :11-Jun-2010第 张 共 张文 件 :C:Documents and SettingsAdministrator桌 面 无 线 温 度 湿 度 数 据 采 集 CC .ddb制 图 人 :Y112MHZC630PC730PVC CS1SW-PB+C510uFR210KP1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P1.01P1.12P1.23P1.34P1.45P1.56P1.67P1.78RESET9P3.010P3.111P3.21

3、2P3.313P3.414P3.515P3.616P3.717XTAL118XTAL219GND20P2.021P2.122P2.223P2.324P2.425P2.526P2.627P2.728PSEN29ALE/PROG30EA/Vpp31P0.732P0.633P0.534P0.435P0.336P0.237P0.138P0.039Vcc40U6AT89S52P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0P3.0P3.1P3.2P3.3P3.4P3.5P3.6P3.7VC CR31KR41KR51KR61KR101

4、KR71KR81KR91KP2.7VC C 温湿度传感器 单片机最小系统第3页/共15页nRF905nRF9051234ABCD4321DCBA标 题图 号修 订尺 寸A4日 期 :12-Jun-2010第 张 共 张文 件 :C:Documents and SettingsAdministrator桌 面 无 线 温 度 湿 度 数 据 采 集 CC .ddb制 图 人 :TRX_CE1PWR_UP2uPCLK3VDD4VSS5CD6AM7DR8VSS9MISO10MOSI11SCK12CSN13XC114XC215VSS16VDD17VSS18VDD_PA19ANT120ANT221VSS

5、22IREF23VSS24VDD25VSS26VSS27VSS28VSS29VSS30DVDD_1V231TXEN32NR F905E?C?22PFC?22PFY?16MHZR?1MVDDR?22KC?3.3NFC?C?4.7nFC?33PFVDDC?10.7nFTX_ENTRX_CEPWR_UPuPCLKCDAMDRMISOMOSISCKCSNC?33pF+C?10uFVC C12345678910111213J?CON13VDDTX_ENTRX_CEPWR_UPuPCLKCDAMDRMISOMOSISCKCSN123Loop antenna connection第4页/共15页nRF905

6、nRF905的接口的接口1、模式控制接口：该接口由 PWR 、TRX_CE、TX_EN组成控制由nRF905组成的高频头的四种工作模式：掉电和 SPI 编程模式；待机和SPI编程模式 ；发射模式；接收模式。2、SPI接口：SPI 接口由 CSN、SCK、MOSI以及MISO组成。在配置模式下单片机通过SPI接口配置高频头的工作参数；在发射/接收模式下单片机SPI接口发送和接收数据。3、状态输出接口：提供载波检测输出CD，地址匹配输出AM，数据就绪输出DR。第5页/共15页接收模块硬件电路设计接收模块硬件电路设计接收模块主要是由nRF905接收数据，再将温湿度数据由LCD1602显示出来。第6页

7、/共15页LCD液晶显示123456ABCD654321DCBA标 题图 号修 订尺 寸B日 期 :14-Jun-2010第 张 共 张文 件 :C:Documents and SettingsAdministrator桌 面 无 线 温 度 湿 度 数 据 采 集 CC .ddb制 图 人 :VC CP1.6P1.7R114.7KVC CGND1Vout2Vin3U2AMS1117VC C3.3VY112MHZC630PC730PVC CS1SW-PB+C510uFR210KP1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P1.01P1.12P1.23P1.34P1.45P1

8、.56P1.67P1.78RESET9P3.010P3.111P3.212P3.313P3.414P3.515P3.616P3.717XTAL118XTAL219GND20P2.021P2.122P2.223P2.324P2.425P2.526P2.627P2.728PSEN29ALE/PROG30EA/Vpp31P0.732P0.633P0.534P0.435P0.336P0.237P0.138P0.039Vcc40U6AT89S52P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0P3.0P3.1P3.2P3.3P3.4

9、P3.5P3.6P3.7VC CR31KR41KR51KR61KR101KR71KR81KR91KP2.7P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7LCD1602GND1VCC2V03RS4R/W5E6D07D18D29D310D411D512D613D714BLA15BLK16U7LCD1602VC CVC CP1.0P1.1P1.2R1210KGND3DATA4SCK1VC C2U4SHT10VC CD1BR IDGEVin1+5V3GND2U1LM7805C1470uFC3104FC2104FC410uFVD110uFR11KVC CT?TRANS1220V9VC8

10、47uFC910uF电源模块温湿度检测电压转换模块无线发射模块单片机最小系统液晶显示模块3.3VP2.6P2.5P2.4P3.5P3.2P3.3P2.0P2.1P2.2P2.3P3.4VC C1TX_EN2PWE_UP4uCLK5CD6AM7DR8MISO9MOSI10SCK11CSN12GND13GND14TRX_CE3U5NR F905模 块 在第3脚加一个10K的电位器，用来调整背光。 VL为液晶显示器对比度调整端，接正电源时对比度最弱，接地时对比度最高，对比度过高时会产生“鬼影”。第7页/共15页软件设计第8页/共15页发送流程nRF905第9页/共15页nRF905接收流程第10页/

11、共15页液晶显示流程图第11页/共15页123456ABCD654321DCBA标 题图 号修 订尺 寸B日 期 :11-Jun-2010第 张 共 张文 件 :C:Documents and SettingsAdministrator桌 面 无 线 温 度 湿 度 数 据 采 集 CC .ddb制 图 人 :VC CP1.6P1.7R114.7KVC CGND1Vout2Vin3U2AMS1117VC C3.3VY112MHZC630PC730PVC CS1SW-PB+C510uFR210KP1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P1.01P1.12P1.23P1.3

12、4P1.45P1.56P1.67P1.78RESET9P3.010P3.111P3.212P3.313P3.414P3.515P3.616P3.717XTAL118XTAL219GND20P2.021P2.122P2.223P2.324P2.425P2.526P2.627P2.728PSEN29ALE/PROG30EA/Vpp31P0.732P0.633P0.534P0.435P0.336P0.237P0.138P0.039Vcc40U6AT89S52P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0P3.0P3.1P3.2

13、P3.3P3.4P3.5P3.6P3.7VC CR31KR41KR51KR61KR101KR71KR81KR91KP2.7P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7LCD1602GND1VCC2V03RS4R/W5E6D07D18D29D310D411D512D613D714BLA15BLK16U7LCD1602VC CVC CP1.0P1.1P1.2R1210KGND3DATA4SCK1VC C2U4SHT10VC CD1BR IDGEVin1+5V3GND2U1LM7805C1470uFC3104FC2104FC410uFVD110uFR13KVC CT?TRANS1

14、220V9VC847uFC910uF电源模块温湿度检测电压转换模块无线发射模块单片机最小系统液晶显示模块3.3VP2.6P2.5P2.4P3.5P3.2P3.3P2.0P2.1P2.2P2.3P3.4VC C1TX_EN2PWE_UP4uCLK5CD6AM7DR8MISO9MOSI10SCK11CSN12GND13GND14TRX_CE3U5NR F905模 块 发射模块电路图发射模块电路图第12页/共15页接收模块电路图接收模块电路图123456ABCD654321DCBA标 题图 号修 订尺 寸B日 期 :11-Jun-2010第 张 共 张文 件 :C:Documents and Set

15、tingsAdministrator桌 面 无 线 温 度 湿 度 数 据 采 集 CC .ddb制 图 人 :Y112MHZC630PC730PVC CS1SW-PB+C510uFR210KP1.0P1.1P1.2P1.3P1.4P1.5P1.6P1.7P1.01P1.12P1.23P1.34P1.45P1.56P1.67P1.78RESET9P3.010P3.111P3.212P3.313P3.414P3.515P3.616P3.717XTAL118XTAL219GND20P2.021P2.122P2.223P2.324P2.425P2.526P2.627P2.728PSEN29ALE/P

16、ROG30EA/Vpp31P0.732P0.633P0.534P0.435P0.336P0.237P0.138P0.039Vcc40U4AT89S52GND1Vout2Vin3U2AMS1117VC C3.3VP0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7P2.6P2.5P2.4P2.3P2.2P2.1P2.0D1BR IDGEVin1+5V3GND2U1LM7805C1470uFC3104FC2104FC410uFVD110uFR13KVC CP3.0P3.1P3.2P3.3P3.4P3.5P3.6P3.7VC CR31KR41KR51KR61KR101KR71KR81KR91KP2.7P0.0P0.1P0.2P0.3P0.4P0.5P0.6P0.7LCD1602GND1VCC2V03RS4R/W5E6D07D18D29D310D411D512D613D714BLA15BLK16U5LCD1602VC CVC CP1.0P1.1P1.2R