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Location context sensitive augmented motion sensing to coordinate smarter automatic responses Disclosure Number: IPCOM000198585D
Publication Date: 2010-Aug-10
Document File: 3 page(s) / 95K

Publishing Venue

The Prior Art Database


This article describes a generic mechanism for coordinating multiple sensors with location information so as to provide more flexible, and powerful, monitoring and control solutions.

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Location context sensitive augmented motion sensing to coordinate smarter automatic responses

Motion sensors are becoming increasingly common as part of building environmental control systems. They are used for any number of functions such as lighting control, security alarm activation, and heating and ventilation control. Typically these sensors are limited to controlling a particular function and often rely on the use of a timer to subsequently deactivate. This poses a number of common inconveniences such as lights that deactivate in a relatively empty office when someone is sitting at their desk for some time. Work-arounds for this problem include installing additional sensors to cover more locations or using uneconomically long times from activation to shutdown.

    Instead of using detection information to simply trigger an action the information can be coordinated with some location data to provide a more usable context. For instance, by placing motion sensors in doorways a count of people entering or leaving a room can be kept. In this case the lights or other triggered action can be deactivated once everyone has left the room, for example, instead of after a fixed time after the last motion was detected. Additionally by correlating the sensor with a room type it would be possible to improve the effectiveness of the sensed information. For example in a bedroom it would expected for there to be to be long periods of no motion when a person is sleeping, but the equivalent behaviour in a shower would be quite unusual. Using this logic it would be possible to raise a panic alarm and call for help if someone entered a shower, but then didn't move at all for 5 minutes, which would likely be an indication that they had slipped and fallen and require help. This would be particularly useful for vulnerable people living alone and provide them with additional independence without unduly hindering their safety.

    To implement this system a plurality of motion sensors, each with a unique identifier, would be deployed in a network connected to a central control system. The central control system would be updated to include location information for each sensor id. When any networked sensor detects motion the relevant sensor information is sent along with the sensor id to the control system. Correlation between the sensor id and the installed location data in the control system gives the sensed motion a location context. This information can be passed into any number of different control algorithms.

Figure 1 below shows a simple diagram of the major components of this disclosure. These can be described as follows:

Sensors: sensor located in a particular location which will detect a certain type of input (e.g. motion) and generate output information which includes data
about the input and a sensor id which uniquely references the sensor. E.g. sensor1
Control System: comprises the logic which can aggregate the information from a number of sensors an...