The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Two Doppler radar occupancy sensor systems built with low-cost, low-power CC2530 are shown. One uses quadrature receiver, the other employs passive sensor node as receiver. The 12-minute experiment in which the quadrature sensor was exposed to a range of different presence/interference scenarios demonstrates such smart occupancy sensors can accurately detect the true presence occupancy by extracting...