In recent years,with the rapid development of China’s economy and the continuous improvement of people’s living standards,the number of motor vehicles and the number of drivers in the country have grown rapidly.Due ...In recent years,with the rapid development of China’s economy and the continuous improvement of people’s living standards,the number of motor vehicles and the number of drivers in the country have grown rapidly.Due to the increase in the number of vehicles and the number of motorists,the traffic accident rate is increasing,causing serious economic losses to society.According to the traffic accident statistics of the Ministry of Communications of China in 2009,more than 300,000 car accidents occurred in the year,most of which were caused by drunk driving.Therefore,this paper proposes a design scheme based on the Internet of Things-based vehicle alcohol detection system.The system uses STM8S003F3 single-chip microcomputer as the main control chip of the system,combined with alcohol sensor MQ-3 circuit,LCD1602 liquid crystal display circuit,buzzer alarm circuit and button circuit to form a complete alcohol detection module hardware system.The main functions of the system are as follows:the alcohol sensor in the car detects the driver’s alcohol concentration value,and displays the value on the LCD screen.The buzzer alarm is exceeded and the information is sent to the traffic police department and the family’s mobile phone through the GPRS module.The system can effectively make up for the shortcomings of traffic police detection,which has certain research significance.展开更多
针对智能家居终端设备的极大差异带来的网络接口不统一问题,设计了四线控制家电的RF通信模块,其接口简单,具有高兼容性。首先介绍了基于射频无线通信技术的智能家居系统,设计并实现了一款采用STM8S103F3单片机和CC1101无线收发器的通信...针对智能家居终端设备的极大差异带来的网络接口不统一问题,设计了四线控制家电的RF通信模块,其接口简单,具有高兼容性。首先介绍了基于射频无线通信技术的智能家居系统,设计并实现了一款采用STM8S103F3单片机和CC1101无线收发器的通信模块,重点论述了通信模块的硬件及软件设计。用软件模拟FIFO(first input first output,先入先出队列)缓冲区确保不丢失数据,且发送数据前检查同频电磁波实现防冲突功能。测试表明,该无线通信模块能够满足低成本、低功耗和远距离无线传输的要求。展开更多
针对低频射频识别(Radio frequency identification,RFID)智能锁的需求和现有智能锁存在的问题,提出了一种基于125kHz的RFID智能锁系统.该设计采用STM8s103F3单片机作为控制核心,使用AT24C02存储卡号信息.系统的主要特点为使用运算放大...针对低频射频识别(Radio frequency identification,RFID)智能锁的需求和现有智能锁存在的问题,提出了一种基于125kHz的RFID智能锁系统.该设计采用STM8s103F3单片机作为控制核心,使用AT24C02存储卡号信息.系统的主要特点为使用运算放大电路来读取电子标签上的信息,降低了成本、提高了解码速率.设计了相应的硬件电路,完成了射频信号的捕捉、放大和曼彻斯特码的解码以及相应的物理解锁动作,介绍了系统的解码算法和硬件的开发流程.系统应用与分析表明,该设计稳定可靠,运行效果良好.展开更多
基金This work was financially supported by the National Natural Science Foundation(No.61806088)Jiangsu Province Industry-University-Research Cooperation Project(No.BY2018191)Natural Science Fund of Changzhou(CE20175026)and Qing Lan Project of Jiangsu Province.
文摘In recent years,with the rapid development of China’s economy and the continuous improvement of people’s living standards,the number of motor vehicles and the number of drivers in the country have grown rapidly.Due to the increase in the number of vehicles and the number of motorists,the traffic accident rate is increasing,causing serious economic losses to society.According to the traffic accident statistics of the Ministry of Communications of China in 2009,more than 300,000 car accidents occurred in the year,most of which were caused by drunk driving.Therefore,this paper proposes a design scheme based on the Internet of Things-based vehicle alcohol detection system.The system uses STM8S003F3 single-chip microcomputer as the main control chip of the system,combined with alcohol sensor MQ-3 circuit,LCD1602 liquid crystal display circuit,buzzer alarm circuit and button circuit to form a complete alcohol detection module hardware system.The main functions of the system are as follows:the alcohol sensor in the car detects the driver’s alcohol concentration value,and displays the value on the LCD screen.The buzzer alarm is exceeded and the information is sent to the traffic police department and the family’s mobile phone through the GPRS module.The system can effectively make up for the shortcomings of traffic police detection,which has certain research significance.
文摘针对智能家居终端设备的极大差异带来的网络接口不统一问题,设计了四线控制家电的RF通信模块,其接口简单,具有高兼容性。首先介绍了基于射频无线通信技术的智能家居系统,设计并实现了一款采用STM8S103F3单片机和CC1101无线收发器的通信模块,重点论述了通信模块的硬件及软件设计。用软件模拟FIFO(first input first output,先入先出队列)缓冲区确保不丢失数据,且发送数据前检查同频电磁波实现防冲突功能。测试表明,该无线通信模块能够满足低成本、低功耗和远距离无线传输的要求。
文摘针对低频射频识别(Radio frequency identification,RFID)智能锁的需求和现有智能锁存在的问题,提出了一种基于125kHz的RFID智能锁系统.该设计采用STM8s103F3单片机作为控制核心,使用AT24C02存储卡号信息.系统的主要特点为使用运算放大电路来读取电子标签上的信息,降低了成本、提高了解码速率.设计了相应的硬件电路,完成了射频信号的捕捉、放大和曼彻斯特码的解码以及相应的物理解锁动作,介绍了系统的解码算法和硬件的开发流程.系统应用与分析表明,该设计稳定可靠,运行效果良好.
