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为了解决高可靠性报警和识别个体,提出了基于三分量脚步信号的智能报警器,使用MMA7260Q采集脚步信号的X、Y、Z三个轴方向上的加速度,单片机STM32F103的AD采集到加速度传感器输出的信号后,采集信号一方面用来确定是否有脚步信号,如果确定有脚步信号,单片机STM32F103通过蜂鸣器进行报警;另一方面包采集到的脚步信号通过无线发射芯片发送到无线USB接口模块,将数据传送到PC机后进行处理,用于做个体的识别。
In order to solve the problem of high reliability alarm and identification of individuals, an intelligent alarm based on the three-component footstep signal is proposed. The accelerations of the three axes of X, Y and Z of the footstep signal are acquired by using the MMA7260Q. The AD of the STM32F103 is collected by the acceleration sensor Of the signal, the acquisition signal used to determine whether there is footstep signal on the one hand, if you determine the footstep signal, the microcontroller STM32F103 alarm through the buzzer; the other hand, the pace packet collected signal sent to the wireless USB chip through wireless transmit interface module , The data is sent to the PC for processing, for individual identification.