Circuit for automatically identifying and analyzing insulin pen injection sound

Abstract

The invention provides a circuit for automatically identifying and analyzing insulin pen injection sounds. The circuit can automatically pick up an audio signal of insulin pen rotation, processes the audio signal through identification and analysis, and obtains an insulin injection dose through calculating the number of times that square waves occur. With the adoption of the low-cost and low-power-consumption design, a mechanical insulin pen can have the automatic recording capability by using cheap accessories, thereby facilitating diabetic patients to perform long-term management on their health.

Description

technical field [0001] The invention relates to a circuit for insulin pen injection sound, in particular to a circuit for automatically identifying and analyzing the insulin pen injection sound. Background technique [0002] By analyzing the use process of the mechanical insulin pen, we found that when it injects insulin, the internal mechanical gear of the pen meshes, and it will make a sound of "click" every time a unit of insulin is injected, and the "click" sound appears through recording calculation analysis The number of times, you can know how many units of insulin injections. The method of traditional speech recognition is to first convert the sound into a digital signal with high-precision sampling, and then find out a series of feature points of the "click" sound signal. By identifying and matching the number of occurrences of similar feature points, the occurrence of the "click" sound can be obtained. The number of times, that is, the number of times the gears me...

AI Technical Summary

Problems solved by technology

Due to the high accuracy of sound sampling and the heavy workload of matching calculations, high-cost and high-power DSP is generally required for calculation and processing. The power consumption is at least 50mA, and the hardware cost is generally at least 20 US dollars.

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