911 services and vital sign measurement utilizing mobile phone sensors and applications

摘要

Improved methods for utilizing 911 services, for implementing 911 dispatch protocols, and for measuring vital signs of a human, all by accessing mobile phone sensors and applications, are disclosed. Vital signs such as heart rate, breathing rate, breathing distress, and blood pressure can be measured using mobile phone sensors and applications. A method for differential estimation of blood pressure involves the synchronization of time between two mobile phones, locating an appropriate position for one cell phone and recording heart sounds, and recording video data from the finger tip of the subject using the other mobile phone.

主权项

1. A method for transmitting heart rate information of a subject to an emergency dispatcher, comprising:
placing a Voice over IP (“VOIP”) call to an emergency dispatcher using a mobile phone, wherein the mobile phone comprises an embedded camera with a lens, a flash, a WiFi receiver, a WiFi transmitter, VOIP software, wherein the VOIP software comprises modified signaling protocols which facilitate transmission of heart rate information in real-time, and an application for estimating heart rate information using the camera and flash, and wherein all subsequent steps are performed during the VOIP call; activating the application for estimating heart rate information; placing the finger tip of the subject on the lens of the camera; activating the flash of the camera to permit the application to capture a video containing information about the heart rate of the subject relating to variations in reflective index of light directed at the finger tip of the subject; using the application to analyze the video and estimate heart rate information of the subject, wherein the application utilizes Photo Plethysmography (“PPG”), wherein a low reflective index is represents a systolic phase and a high reflective index represents a diastolic phase, and wherein the step of using the application to analyze the video and estimate heart rate information of the subject comprises the steps of:
dividing frames of the video into multiple regions,splitting pixels of a region of the frames into red, blue, and green components;mapping intensity of the red component of the region over an interval of time Wt to determine a number of peaks n; andestimating heart rate information of the subject using an equation; and using the modified signaling protocols of the mobile phone to transmit the heart rate information of the subject to the emergency dispatcher via an Internet-based network in real-time during the VOIP call.