笔记本电脑防盗装置的设计

Design of Laptop Antitheft Device

设计了一种基于陀螺仪加速度计传感器的笔记本防盗装置为防止笔记本电脑失窃.采用低功耗的单片机作为主控芯片,通过集成了3轴陀螺仪和3轴加速度计MPU6050芯片对笔记本位移变化进行复杂演算,运用16位的模拟数字转换器将被测位移变化量转化为数字量,并降低了单片机的运动处理运算负荷.该防盗装置通过配合上位机和下位机软件,用串口通信发送请求触发下位机串口中断,当下位机接收到请求时,将储存的加速度数据通过串口通信发送到上位机,然后上位机每隔一定时间获取下位机存储的加速度数据并对其进行分析,超过阈值发出警报从而达到防盗目的.

We designed the laptop antitheft device based on gyroscope and acceleration transducer for reducingthe theft of laptops. The main control chip with low power consumption was used as the main control chip andthe laptop displacement change was intricately calculated by MPU6050 chip that was integrated the three- axisgyroscope and three- axis acceleration, and then the calculated displacement change was converted into digitalquantity by an 16-channel analog-to-digital converter, which reduced the movement processing operation load ofsingle chip microcomputer. The antitheft device was cooperated with the upper computer and lower computersoftware. When the lower computer received the request sent by serial communication to trigger a serial interrupt,the stored acceleration data could be sent to the personnel computer（PC） through serial port communication, andthen the stored acceleration data of lower computer was analyzed by the PC at regular intervals. If the accelerationdata exceed a predefined threshold, the theft warning would be sent for antitheft.