▎ 摘　　要

NOVELTY - Compressible wear-resistant finger plethysmography measuring device comprises a flexible graphene pressure detector (1), a signal processing system (2), a human-computer interaction system (3) and power supply system (4). The flexible graphene pressure detector is a three-dimensional graphene sponge, which is a passive device and has two terminals, which are defined as a anode and a cathode. The signal processing system is composed of a buffer (21), a preamplifier, a low pass filter, a post amplifier, and a reference voltage source. The buffer, the preamplifier, the low pass filter and the post amplifier are connected in a secondary connection. The buffer is connected to the positive terminal of the flexible graphene pressure detector. The reference voltage source provides a bias reference voltage for the preamplifier and the low pass filter post amplifier. The human-machine interaction system is composed of an LED and a protection resistor. USE - Used as compressible wear-resistant finger plethysmography measuring device. ADVANTAGE - The device amplifies, shapes and filters the collected weak signals, suppresses external interference, and improves the signal-to-noise ratio, provides a stable, low noise power supply to the unit and overcomes the problem of accuracy and immediacy of real-time monitoring of pulse heart rate. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the block diagram of compressible wear-resistant finger plethysmography measuring device. Flexible graphene pressure detector (1) Signal processing system (2) Human-computer interaction system (3) Power supply system (4) Buffer (21)