摘要
为减少超速汽车使用“电子狗”提前减速以逃避惩罚的现象,基于动生和感生电动势的产生原理,设计了一种利用汽车压力作为测速启动信号的新型汽车速度检测装置,并进行了理论分析和实验验证。有压力作用于压电换能模块上时,该模块会通过永磁铁与金属线圈的电磁感应,将压力转化输出为类正弦交流电;该交流电经过降压稳流电路后,驱动红外发射电路编码后发射红外信号;信息采集部分接收到红外信号后,对其解调、解码后计算得到速度。模拟实验结果表明,该装置测量速度的准确度在95%以上,并可以拓展应用于检测具有一定重量任意物体的平移速度,是一种具有较高实用价值的新型测速装置。
In order to reduce the phenomenon of using "electronic dog" to slow down in advance for speeding vehicles to escape from speeding penalty, a new type of speed detection device is designed, which takes vehicle pressure as the starting signal of speed measurement. At the same time, theoretical analysis and experimental verification are carried out. When there is pressure acting on the piezoelectric energy exchange module, the module will convert the pressure into sinusoidal alternating current through the electromagnetic induction of permanent magnet and metal coil. This alternating current drives the infrared emission after passing through the step-down and current stabilization circuit. The infrared signal is transmitted after the circuit is encoded. After receiving the infrared signal, the information acquisition part calculates the speed after demodulating and decoding. The simulation experiment results show that the accuracy of the measurement speed of the device is more than 95%. It can be extended to detect the translation speed of any object with a certain weight. So, it’s a new type of velocity measuring device with high practical value.
作者
杨家赫
周欣鹏
朱宜昌
董亚萍
张亚萍
YANG Jiahe;ZHOU Xinpeng;ZHU Yichang;DONG Yaping;ZHANG Yaping(College of Science,China University of Petroleum(East China),Qingdao,Shandong 266580)
出处
《物理与工程》
2020年第6期121-126,共6页
Physics and Engineering
基金
教育部产学合作协同育人项目(201902282053)
中国石油大学(华东)混合式教学改革项目(HJ201813)
山东省大学生创新创业训练计划项目(S202010425003)。
关键词
电磁感应
压力发电
被动测速
红外线编码解码
能量收集
electromagnetic induction
pressure power generation
passive speed measurement
infrared coding and decoding
energy harvesting
