Patent ID: 9741235
Date: 2017-08-22
CPC Classifications: A61B,G01L,G08B,H04L,H04W

Claim:
1. A digital real security system comprising: abdominal pressure signal acquiring means for acquiring an abdominal pressure signal from an abdominal pressure sensor for detecting an abdominal pressure of personnel to which the abdominal pressure sensor is fitted; abdominal pressure signal extracting means for extracting from the acquired abdominal pressure signal an abdominal pressure pattern in which abdominal pressure changes and/or a number of breathing times per unit time; storage means for storing a normal-time abdominal pressure pattern and/or number of breathing times of the personnel extracted by the abdominal pressure signal extracting means in association with the personnel; abnormality determining means for matching the abdominal pressure pattern and/or number of breathing times extracted by the abdominal pressure signal extracting means to the personnel's normal-time abdominal pressure pattern and/or number of breathing times stored in the storage means, and determining whether it is abnormality based on the match result; and control means for reporting an abnormal situation according to the abnormality determination result by the abnormality determining means, wherein the abdominal pressure signal acquiring means further acquires a respiration signal from a respiration sensor for detecting breathing of the personnel, and the abdominal pressure signal extracting means subtracts the respiration signal component from the acquired abdominal pressure signal, and extracts an abdominal pressure pattern from an abdominal pressure signal with suppressed influence of respiration.