Wireless detection and alarm system for monitoring human falls and entries into swimming pools by using three dimensional acceleration and wireless link energy data method and apparatus
First Claim
1. A system for determining the occurrence of abnormal motion of a surface, comprising:
- a wireless motion detector for measuring three-dimensional acceleration motion data of the surface and wireless communications channel link energy data;
a transmitter for transmitting the measured data;
a receiver for receiving and storing the data from the wireless motion detector;
a processor for processing the data to determine whether the surface has experienced abnormal motion by signal averaging, temporally smoothing the received data using dynamically sized moving average convolution filters, and comparing the processed data with stored data; and
an output device for outputting an indication of the occurrence of abnormal motion of the surface based on the comparison.
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Accused Products
Abstract
Disclosed is a method and apparatus for monitoring and analysis. The system (1000) includes a wireless detector (1040) within a body of water in combination with video cameras (1080) that surround a body of water. The wireless detector (130) sends acceleration data and the video cameras sends image data, both using a mesh-type wireless network, to a wireless Collector/Analyzer Server (1020). The Collector/Analyzer Server (1020) processes the received data and provides an alarm signal based on the results of comparisons of the different types of data to respective reference data. Image tracking video algorithms are used to create video fences around the swimming pool'"'"'s perimeter and using this as the boundary conditions for creating an alarm criteria.
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Citations
11 Claims
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1. A system for determining the occurrence of abnormal motion of a surface, comprising:
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a wireless motion detector for measuring three-dimensional acceleration motion data of the surface and wireless communications channel link energy data; a transmitter for transmitting the measured data; a receiver for receiving and storing the data from the wireless motion detector; a processor for processing the data to determine whether the surface has experienced abnormal motion by signal averaging, temporally smoothing the received data using dynamically sized moving average convolution filters, and comparing the processed data with stored data; and an output device for outputting an indication of the occurrence of abnormal motion of the surface based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for detecting entry of a person into a body of water by determining a condition of the water that indicates the entry of a person into the body of water, comprising:
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measuring the three dimensional acceleration data of a device in the body of water and the wireless water wave device communications channel link energy; transmitting the measured acceleration data to a processor; processing the transmitted data by signal averaging and temporally smoothing the transmitted acceleration data using dynamically sized moving average convolution filters; creating differential acceleration time derivatives from the processed data; comparing the created differential acceleration time derivatives to historical profiles including differential acceleration time derivatives that relate to conditions that indicate the entry of a person into a body of water; and providing an indication of the entry of a person into the body of water based on the comparison. - View Dependent Claims (10, 11)
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Specification