Design of electronic pulse counter
Abstract
Nowadays, the detection of pulse is becoming more and more common in life. Ordinary
people can measure the pulse at home by themselves. The measurement of pulse has great
benefits in diagnosing cardiovascular and cerebrovascular diseases. Today, electronic pulse
counters gradually replace traditional pulse diagnostic methods, which can reduce the mental
stress of medical workers, reduce the misdiagnosis caused by medical workers for certain
reasons, and improve the "happiness" of medical workers and patients. Originally designed as
an electronic pulse counter system, using a timer, a signal shaping amplifier circuit, and a
display circuit composed of a counter, a decoder, and a digital tube that can display the pulse
number, the electronic measurement of the human pulse is realized. .
Based on a clear design purpose and design background, combined with the development
prospects of the electronic pulse counter system and the status quo at home and abroad, this
scheme 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 circuit
design is completed through the sensor circuit, shaping amplifier circuit, frequency doubling
circuit, timing circuit, and counting decoding display circuit, and the simulation results are
analyzed. On this basis, after the hardware circuit is connected, the circuit test and PCB board
test prove that the electronic pulse counter system can meet expectations and play a role, has a
strong practicality, provides a reference for the prevention and treatment of diseases, and is
beneficial to the development of public health.
【Key Words】 Electronic pulse counter, timer, signal shaping amplifier, digital tube
