数字心率计的FPGA设计与实现

FPGA Design and Implementation of Digital Heart-rate Meter

数字心率计的测量准确度和性价比是衡量其性能的重要指标,为提高其性能指标,首先设计了高精度的模拟电路,抑制了心率信号采集处理过程中的干扰,得到了明显突出的脉冲心率信号。然后重点设计了基于先进FPGA技术的数字系统,设计中采用了有效方法,解决了瞬时心率计算如何节省FPGA资源的难题,实现了FPGA优化设计。通过对心率计的综合仿真,验证了系统设计的有效性和可行性,成功地用到了FPGA芯片中。心率计的设计实现了瞬时心率、平均心率的测量。经仿真证明,各种心率状态显示和报警等。为数字心率计FPGA的设计提供了技术依据,降低了成本和功耗,具有高性价比,符合功能要求。

In order to improve the measurement accuracy and cost performance ratio of digital heart-rate meter,firstly,high-precision analog circuit is designed to obtain the heart rate pulse signal by inhibiting the signal interference in the acquisition and processing.And then digital system is designed with emphasis based on advanced FPGA technology.The effective way is studied for the instantaneous heart rate calculation to solve the problem of FPGA resources saving,and optimal design of the FPGA is achieved.Finally,comprehensive simulation demonstrates the effectiveness and feasibility of the design.It is successfully downloaded to FPGA chip.The heart-rate meter achieves the measurement and digital show of instantaneous and average heart rate,variety status display and alarm functions of heart rate.The FPGA design of digital heart-rate meter is technology advanced,measurement is accuracy,the cost and power consumption is reduced and cost performance ratio is high.