Blog : Use Case

Night time monitoring for child care

We parents all fear the same. A sleepwalking child who wanders in the house and eventually injure him/herself. This is especially true with toddlers since installing a smaller locked door is no longer effective.

Different sensors for multiple events

There are a multitude of sensor and solutions in the market that can be used to detect when a child is sleeping, standing, moving in the room, leaving the room and so on. However, each product focuses on one specific area be it the bed, the room or the door. Furthermore, even when it is possible to combine such diversity of products together, they still are limited to the events they were made for. Therefore, it is hard to detect events that could be more specific to a given child and not foreseen by the products themselves.

Real time accurate localisation is enough

A solution is to focus not on detecting events, but child position and correlating it with the location of key room elements like the bed, the door and alike. When it could be possible to distinguish if the position is close to the bed, on the bed, at what distance from the door and so on, it would be possible to detect events like sleeping, sitting, walking, standing, exiting the room and alike.
Furthermore, by combining sequences of such events of positions, it would be possible to determine more complex event detection such as sleep walking, wandering, child going to the bathroom.
We at Xetal have developed such tracking technology and are applying it with partners to the detection of these types of events and patterns. The technology has already proved effective in field such as senior care and is showing already promising results for child care.

This is just an example of how the information provided by a Xetal system could be used to determine not only presence and number of people, but also their interaction level without invading their privacy.  Subscribe to the mailing list to know more.

Making a Smart TV smart about us

Making a Smart TV smart about us

A Smart TV should be able to understand what happens around them to provide more personalised show schedules, avoid irrelevant advertisement, block channels the current viewers should not watch, and so on. Such a Smart TV would also be able to provide better parental control features, children activity monitoring, and adaptive sound and lighting.

A Smart TV must be able to understand if one or more persons are present, what they do and the type of interaction with the TV, which can be classified into focused (TV is the primary activity), monitoring(TV is secondary activity) or idling  (TV is simply background).

We need to know what people do

To get further insight on what is truly happening in front of the television, we need to be able to monitor the entire area in front of it. This can be done to a very limited extent with technologies such as cameras. However, these are considered intruding personal privacy as demonstrated by the recent backslash against smart TV equipped with them. Using information coming from personal devices nearby, like smartphones or smart watches, has also shown to be ineffective. Unfortunately, when at home they are often not in the proximity of the viewer and activity on them cannot be captured.

Simple temperature sensors can be enough

At Xetal we have developed a technology able to detect presence and position people in real time. The detection accuracy is high enough for understanding person activities such as walking, standing, sit on a sofa and so on. The technology uses only simple temperature sensors that can be embedded in existing devices such a TV set, a decoder or a TV Sound Bar. The technology is non-intrusive and allows to extract data without privacy concerns.

As an illustration of its use, a recent study was conducted using the new Xetal Development kit on a family of four (two adults and two kids). Activity was monitored when the TV was active. The figure above shows one of the several data set obtained. It illustrates the probability of viewers to be present when the TV is active. We can easily recognize two position where two viewers are most likely sitting and two most likely laying down. By combining such positional data with data on the displayed content, we have been able to determine that the sitting viewers are the children and the laying ones are the adults. Furthermore, the study has shown how children tend to watch TV more attentively that the adults, who prefer to lay down and use portable devices like tablets. Trajectory data has also been used to evaluate the TV set was active but nobody was watching, something happening mostly with adults.

This is just an example of how the information provided by a Xetal system could be used to determine not only presence and number of people, but also their interaction level without invading their privacy.