电子脉搏计数器的设计

第Ⅱ页Design of electronic pulse counterAbstractNowadays,the detection of pulse is becoming more and more common in life.Ordinarypeople can measure the pulse at home by themselves.The measurement of pulse has greatbenefits in diagnosing cardiovascular and cerebrovascular diseases.Today,electronic pulsecounters gradually replace traditional pulse diagnostic methods,which can reduce the mentalstress of medical workers,reduce the misdiagnosis caused by medical workers for certainreasons,and improve the "happiness"of medical workers and patients.Originally designed asan electronic pulse counter system,using a timer,a signal shaping amplifier circuit,and adisplay circuit composed of a counter,a decoder,and a digital tube that can display the pulsenumber,the electronic measurement of the human pulse is realized.Based on a clear design purpose and design background,combined with the developmentprospects of the electronic pulse counter system and the status quo at home and abroad,thisscheme sets up the digital pulse counter framework,clarifies the system's working principle,and focuses on the analysis of the monostable triggering working principle.The whole circuitdesign is completed through the sensor circuit,shaping amplifier circuit,frequency doublingcircuit,timing circuit,and counting decoding display circuit,and the simulation results areanalyzed.On this basis,after the hardware circuit is connected,the circuit test and PCB boardtest prove that the electronic pulse counter system can meet expectations and play a role,has astrong practicality,provides a reference for the prevention and treatment of diseases,and isbeneficial to the development of public health.[Key Words]Electronic pulse counter,timer,signal shaping amplifier,digital tube