论文部分内容阅读
传感器节点是构建无线传感器网络的基本硬件单元。为了扩展无线传感器网络的应用范围,本文为MICA2传感器节点设计了具有采集和播放语音能力的扩展模块。文章首先介绍该语音模块的逻辑结构和工作过程,然后给出模块中语音接口部分的FPGA设计。该设计采用了时钟门控和电路资源共享等技术,具有低功耗和高可靠性特点,只需对FPGA作少量修改即可适用于不同类型的传感器节点。
Sensor nodes are the basic hardware units for building wireless sensor networks. In order to extend the application range of wireless sensor networks, this paper designs an expansion module for MICA2 sensor nodes that has the capability of collecting and playing voice. The article first introduces the logical structure and working process of the voice module, and then gives the FPGA design of the voice interface part in the module. The design uses techniques such as clock gating and circuit resource sharing, low power consumption and high reliability features, just a small amount of changes to the FPGA can be applied to different types of sensor nodes.