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湖北天健建设集团有限公司网站,北京制作小程序,服务好的岑溪网站开发,html素材免费下载车内滞留儿童远程报警系统设计 摘要 在汽车广泛普及的当下#xff0c;车内滞留儿童引发的安全事故频发#xff0c;密闭环境中温度骤变与 CO₂浓度升高对儿童生命安全构成严重威胁。由于儿童自救能力薄弱#xff0c;传统依赖人工检查的方式易因疏忽导致悲剧#xff0c;因此研…车内滞留儿童远程报警系统设计摘要在汽车广泛普及的当下车内滞留儿童引发的安全事故频发密闭环境中温度骤变与 CO₂浓度升高对儿童生命安全构成严重威胁。由于儿童自救能力薄弱传统依赖人工检查的方式易因疏忽导致悲剧因此研发一种能实时监测车内人员状态与环境参数并在危险时自动响应的远程报警系统具有重要现实意义。本设计提出一种基于 STC89C52 单片机的车内滞留儿童远程报警系统。系统核心功能包括通过 HX711 传感器检测驾驶员是否离车为后续监测触发提供判断依据借助 D203S 人体热释电传感器监测车内是否有儿童滞留在检测到驾驶员离开且车内有人时自动启动环境监测模式。通过 SGP30 传感器实时监测车内 CO₂浓度当检测到儿童滞留且 CO₂浓度超过安全阈值时立即触发声光报警模块发出警示同时通过 ULN2003A 驱动步进电机自动打开车门并由 4G 模块向预设手机号发送报警短信通过 DS18B20 温度传感器采集车内温度若儿童滞留且温度超出安全范围过高或过低同样触发声光报警、车门自动开启及 4G 短信报警。当 CO₂浓度与温度同时异常时系统同步执行多重响应措施。LCD1602 显示屏实时展示车内温度、CO₂浓度、人员状态及设备工作信息用户可通过按键切换至阈值设置界面调整安全参数或手动控制车门开关状态。该系统的作用在于构建 “人员检测 - 环境监测 - 多维度响应” 的安全防护体系。通过精准的人员存在判断与环境参数监测实现危险的早期识别声光报警模块在车内形成直接警示4G 模块则突破空间限制实现远程预警步进电机驱动车门开启为儿童提供逃生通道。为车内滞留儿童提供了主动防护与快速救援的技术保障有效降低安全事故发生率为家长和监护人提供可靠的安全辅助守护儿童乘车安全。关键词STC89C52车内滞留远程报警环境监测声光报警4G 通信Design of Remote Alarm System for Children Trapped in CarsAbstractIn the current era of widespread popularity of automobiles, safety accidents caused by children being stranded in cars are frequent, and sudden temperature changes and elevated CO ₂ concentrations in enclosed environments pose a serious threat to childrens life safety. Due to the weak self rescue ability of children, the traditional reliance on manual inspection can easily lead to tragedies due to negligence. Therefore, the development of a remote alarm system that can monitor the status of passengers and environmental parameters in real-time and automatically respond in case of danger is of great practical significance.This design proposes a remote alarm system for children stranded in a car based on STC89C52 microcontroller. The core functions of the system include: detecting whether the driver has left the vehicle through the HX711 sensor, providing a judgment basis for subsequent monitoring triggers; By using the D203S human body pyroelectric sensor to monitor whether there are children stuck in the car, the environmental monitoring mode will be automatically activated when the driver leaves and there are people in the car. Real time monitoring of CO ₂ concentration inside the vehicle through SGP30 sensor. When a child is detected to be stranded and the CO ₂ concentration exceeds the safety threshold, the sound and light alarm module is immediately triggered to issue a warning. At the same time, the ULN2003A drives the stepper motor to automatically open the car door, and the 4G module sends an alarm message to the preset mobile phone number; Collecting the temperature inside the car through the DS18B20 temperature sensor, if a child is stranded and the temperature exceeds the safe range (too high or too low), it will also trigger an audible and visual alarm, automatic door opening, and 4G SMS alarm. When the concentration of CO ₂ and temperature are both abnormal, the system synchronously executes multiple response measures. The LCD1602 display screen displays real-time information on the temperature inside the car, CO ₂ concentration, personnel status, and equipment operation. Users can switch to the threshold setting interface by pressing buttons to adjust safety parameters, or manually control the door switch status.The function of this system is to build a security protection system of personnel detection environment monitoring multi-dimensional response. By accurately assessing personnel presence and monitoring environmental parameters, early identification of hazards can be achieved; The sound and light alarm module forms a direct warning inside the car, while the 4G module breaks through space limitations to achieve remote warning. The stepper motor drives the door to open, providing an escape route for children. Provided active protection and rapid rescue technical support for children stranded in vehicles, effectively reducing the incidence of safety accidents, providing reliable safety assistance for parents and guardians, and safeguarding the safety of children while riding.KeywordsSTC89C52; Stuck in the car; Remote alarm; Environmental monitoring; Sound and light alarm; 4G communication目 录1 绪论1.1 研究背景及意义1.2 国内外研究现状1.3 主要内容2 系统总体方案设计2.1系统总体设计2.2 主要模块方案选择3系统硬件设计3.1 总体硬件框架3.2 主控模块电路设计3.3 驾驶员检测模块电路设计3.4 儿童滞留检测模块电路设计3.5 环境监测模块电路设计3.6 显示模块电路设计3.7 按键模块电路设计3.8 声光报警模块电路设计3.9 车门控制模块电路设计3.10 4G 通信模块电路设计4 系统程序设计4.1 编程软件介绍4.2 系统主流程设计4.3 独立按键4.4 LCD1602液晶显示子流程4.5 称重模块子流程设计4.6 SGP30模块子流程设计4.7 温度检测模块子流程设计4.8 步进电机子流程设计5实物制作与功能测试5.1 实物制作5.2 人员检测与显示功能测试5.3 环境监测与车门控制功能测试5.4 声光报警功能测试5.5 4G 远程报警功能测试5.6 按键设置与阈值调整功能测试6 总结参考文献致谢附录A 原理图附录B PCB附录C 主程序