摘要
设计了一种基于三轴加速度计ADXL345的桥涵防碰撞报警装置,它能够及时检测桥涵限高门架的碰撞及倾斜情况,并将碰撞信息发送至远程监控端。将装置安装在限高门架上,一旦碰撞加速度超过系统设定阈值,加速度计产生中断信号,微控制器联网报警。由于装置安装环境的特殊性,系统必须是一个无源系统。电能依靠锂电池提供,为延长系统的使用周期,采用太阳能充电。为进一步减少系统能耗,对电源模块进行管理。电源模块的设计保证系统能稳定持久地运行。
The paper has designed a anti-collision alarm device based on three-axis acceierometer ADXL345. It can detect collision and incline situation of bridges＇ and culverts＇ height-limit portals and send the information to the remote monitoring terminal. The device is installed on the height-limit portals, once the crash acceleration exceeds the setting threshold,the accelerometer generates interrupt signal to drive the microcontroller connect to the network and give an alarm. Due to the special nature of the device installation environment ,the system must be a passive system. The power is provided by the lithium battery which can also be charged by solar energy, at the same time the power module is managed to reduce the energy consumption further. This design of power module ensures stable and lasting operation.
出处
《传感技术学报》
CAS
CSCD
北大核心
2014年第9期1178-1182,共5页
Chinese Journal of Sensors and Actuators
关键词
三轴加速度计
碰撞
倾斜
无源系统
太阳能充电
three-axis accelerometer
collision
incline
passive system
solar charging
