Air pressure detection device and method and dual-barometer fall detection system

Abstract

The invention provides an air pressure detection device and method and a dual-barometer fall detection system. The air pressure detection device is arranged at a fixed position and measures a first air pressure value at the fixed position, and a fall detection device is worn on a user and measures a second air pressure value at the position of the user through barometers therein. In a correction mode, the system sets a reference value according to an air pressure difference between the first air pressure value and the second air pressure value which are generated at present. In a detection mode, a real-time air pressure difference is calculated according to a first air pressure value and a second air pressure value which are measured in real time, and whether a falling event occurs or not is judged after comparison with the reference value.

Description

technical field [0001] The present invention relates to a fall detection technology, in particular to a related device, a method and a double barometer fall detection system for performing fall detection by using two barometers to obtain an air pressure difference. Background technique [0002] Long-term care is an important issue in an aging society. The common needs of long-term care are caregivers, and the care system can also use some technological methods, such as detecting whether the care recipient is in a critical state during home care. Among them, the care recipient Falls are often an endangered condition, so fall detection is an important long-term care need. [0003] There are many methods of fall detection known, and the common way is to wear a fall detection device on the body of the person being cared for. This device is equipped with an accelerometer. The accelerometer is also called a gravity sensor, which can measure several directions ( Acceleration value...

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Problems solved by technology

[0004] What's more, because of the detection device worn by the person who falls, there will be a height drop instantaneously, which can be measured by the barometer. However, if the barometer is used as the basis for the fall detection, there will be a great chance of misjudgment. The information of air pressure varies greatly, because the air pressure of different temperatures, locations and altitudes has a large error, so simply looking at the air pressure value to detect falls is not a reliable basis

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