Other

Robert A Barton

Ben J Wild

Ravneet Bajwa

The present technology may be directed a system for determining an angle and distance between a positioning node and secondary device using a plurality of acoustic transmitters to transmit acoustic ranging signals that are modulated using ranging sequences, respectively. The system includes an acoustic receiver to detect the acoustic ranging signals, and a signal processor to calculate times of arrival and a plurality of aliased angles of arrival of the acoustic ranging signals. An anti-aliasing module may select an angle of arrival from the calculated plurality of aliased angles using the times of arrival of the acoustic ranging signals. A time of flight may be calculated from a comparison of times of arrival for radio signals and the acoustic signals. The time of flight may be used to calculate the distance between the positioning node and secondary device.

Device positioning using acoustic and radio signals

A mobile device is described for tracking an object and sensing an environment of the object. The mobile device includes a circuit board that is loaded with radio frequency (RF) transmitters and receivers for finding the device position and communicating data about the device, the ambient environment of the device, and/or the position of the device. Sensor on the device may measure data about the device and about the ambient environment of the device. Flexible antennas increases the effective volume for a plurality of antennas for increased range and/or reduced power. An adjustable impedance circuit provides for real-time tuning and impedance matching of the antennas.

Circuit and antenna design for small form factor internet of things devices

A safety device is incorporated within conventional lighting fixtures, such as table lamps, floor lamps, wall lighting fixtures, ceiling lighting fixtures, chandeliers, recessed lighting fixtures, and decorative lighting fixture structural members such as ceiling medallions. The safety device incorporates several safety function response mechanisms within conventional lighting fixtures to conceal or obfuscate their presence. The safety device provides power failure lighting, alert signals in response to gas, smoke, fire, intrusion, and any other externally generated alarm signal. It may also provide night lighting. The safety device may include a safety module having a light and/or audio source, a power sensing circuit, a control circuit, and a light sensing circuit.

Safety system and method for conventional lighting fixtures

A concealed safety light is described where the light source is integrated and mounted into a switch or power outlet wiring device form factor () to replace conventional electric wiring devices. The light source () is controlled by a power and control circuit () that derives power from the primary power supply or an alternate power supply. The circuit can detect light levels and turn on the light source when it is dark and also detect power failures to turn on the safety light in the event of a power failure using the alternate power supply The safety light is also capable of responding to an alarm condition from other systems. The resulting safety light is conceyaled in a standard wiring junction box and trimmed with a wall cover plate in the same way as conventional electric wiring devices, allowing it to be concealed while in plain view and provide safety lighting in a variety of ways including power failure, night light and alarm conditions.

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Grafton, MA, United States of America

Robert A Barton