Respiration rate measuring method based on smart phone
By combining a smartphone camera and flash, the problem of high cost, large size, and complicated operation of traditional respiratory rate measurement devices has been solved, enabling fast and accurate respiratory rate measurement, improving user experience and the universality of measurement.
CN121154136APending Publication Date: 2025-12-19DALIAN UNIV OF TECH
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Patent Information
- Application Number
- CN202511357720.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2025-12-19
AI Technical Summary
Technical Problem
Traditional respiratory rate measurement devices are expensive, bulky, and complex to operate, making them difficult to widely apply in routine health monitoring.
Method used
By utilizing the rear camera and flash of a smartphone, rapid and accurate measurement of respiratory rate can be achieved through image acquisition, signal processing, and quality assessment.
Benefits of technology
It reduces measurement costs, improves universality and accessibility, is easy to operate, has a significant noise interference suppression effect, and ensures the accuracy and stability of measurements.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a breathing rate measuring method based on a smart phone. The method comprises the following steps: (1) presetting camera parameters, and collecting a user fingertip pulse photoplethysmography (PPG) signal; (2) processing the collected signals through a filtering method and the like to obtain breathing signals; (3) evaluating the respiratory signal quality based on a template matching method, and when the signal quality score is lower than a preset threshold value, not outputting a respiratory rate result and giving an operation suggestion; and (4) carrying out time domain peak valley detection on the high-quality signal to obtain a respiratory rate estimation value. According to the method, the breathing rate of the user is measured by using the rear camera and the flash lamp of the smart phone, additional medical equipment is not needed, the method is simple, convenient, rapid and efficient, the method can be widely applied to general common users, and a simple and feasible scheme is provided for personal health monitoring.
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