Pulse Signal Acquisition Depending On SC0073A And Pulse Signal Analysis Depending On The Cycle Pulse Entropy

With the development of sensors and testing technology and signal processing technology, pulse-taking is asked to be more observable and more objective. In such an environment, the article tries to acquire and analyze the signal of pulse because pulse signal acquiring and pulse signal analyzing are two important parts in the process of visualization and objectification of pulse-taking.First of all, the piezoelectric sensor, SC0073 A, is used to acquire the signal of pulse. According to the output of SC0073 A, processing circuit is designed. Combine the data acquisition module, AD7606-F4, the single chip Microcomputer, PIC24F16KA102, and the communication module, LY-USB-TTL, into an acquisition module to acquire the signal of pulse and pass the acquisition to the computer.After getting the digital signal of pulse into computer, the digital signal of pulse should be preprocessed. Use wavelet denoising to denoise and smooth the digital signal. Use interpolation for baseline emendation to take base-line excursion from the signal. Then use the cycle integration method basing on the cycle pulse entropy to integrate the cycle of pulse signal, extract its representative cycle, its characteristic value K and its period. Then combine the results into history data, using the history data to analyze the pulse signal.Finally, combine all the works above into a pulse signal acquiring and analyzing system.