基于蓝牙4.0低功耗的无线探鱼器系统

Wireless Fish Finder System Based on Bluetooth 4.0 with Low Power Consumption

在对超声波测距和目标判定原理分析的基础上,利用蓝牙4.0低功耗技术和手机应用程序与硬件相结合的方法设计出一探鱼系统。此系统利用集成芯片CC2540实现对超声换能器的信号收发控制,获得目标回波信号,A/D采样后将数据按自定义格式打包,再通过蓝牙4.0发送到具有蓝牙4.0功能的手机上。在手机端进行算法处理,分辨回波是鱼还是水底及目标深度,并直观地呈现在手机应用程序界面中。最终通过实际测试,验证了系统的可行性。

Based on the analysis of ultrasonic ranging and principle of objective judgment, a fish finder system was designed, using Bluetooth 4.0 low power consumption technology and combining mobile APP with hardware. An integrated chip CC2540 was used to control the receiving and sending signal of the ultrasonic transducers, and to obtain the target echo signal. After A/D sampling, the signal data was packaged in a custom format then sent to cell-phone with Bluetooth 4.0 function. Algorithm processing was completed in the mobile terminal to distinguish useful target signal（fish or underwater） ; and to calculate underwater depth of the target, which could present visu- ally through APP interface of the phone. Finally the feasibility of the system was verified through practical test.