Abstract: A compact wireless security sensor having a magnetically operated plunger switch. The compact nature of the sensor of the present invention makes it ideal for being substantially concealing into a door frame or window as part of a wireless security system. The sensor unit includes a housing having an inner end, an outer end, and a magnet positioned within a moveable plunger, and an antenna, preferably a flexible wire antenna. The housing further contains a sensor switch, a microprocessor with a PCB, a wireless transmitter, such as an RF transmitter, and a power source, such as a small coin cell battery, for emitting signals to a master station or controller when the plunger switch is depressed and activates the internal sensor switch.
Type:
Grant
Filed:
June 5, 2012
Date of Patent:
February 18, 2014
Assignee:
Ion Digital LLP
Inventors:
Dean David Schebel, Julian P. Carlson, Russell E. Vandevanter
Abstract: A compact wireless security sensor having a magnetically operated plunger switch. The compact nature of the sensor of the present invention makes it ideal for being substantially concealing into a door frame or window as part of a wireless security system. The sensor unit includes a housing having an inner end, an outer end, and a magnet positioned within a moveable plunger, and an antenna, preferably a flexible wire antenna. The housing further contains a sensor switch, a microprocessor with a PCB, a wireless transmitter, such as an RF transmitter, and a power source, such as a small coin cell battery, for emitting signals to a master station or controller when the plunger switch is depressed and activates the internal sensor switch.
Type:
Grant
Filed:
August 27, 2009
Date of Patent:
July 3, 2012
Assignee:
ION Digital LLP
Inventors:
Dean David Schebel, Julian P. Carlson, Russell E. Vandevanter
Abstract: A compact size wireless sensor for sensing a change of state that includes a sensor switch, a microprocessor, a wireless transmitter, a timer (e.g., a low power clock circuit), an antenna, and a coin cell battery power source. The coin cell battery, which is positioned in a stacking arrangement with the microprocessor, switch, and transmitter, allows the sensor to be of a significantly reduced size. Moreover, to provide long life despite a small battery, the microprocessor is run in a standby mode in which the microprocessor draws little power unless it actually samples the state of the sensor switch during select intervals. Various electronic components individually, or in combination, assist in the sampling (monitoring mode) in such a way as to reduce current consumption from the power source. The compact size makes the sensor ideally applicable for wireless intrusion systems embedded within hollow frames of windows and doors.
Abstract: An wireless security sensor system includes a window frame defining a window opening, a window sash movable relative to the window frame between open and closed positions; and a sensor unit embedded in the window frame. The sensor unit includes a housing having an inner end within the window frame, an outer end at a surface of the window frame and a flexible ¼ wave wire antenna extending e.g. longitudinally of the window frame from the housing. The housing contains a sensor switch, a microprocessor, and RF transmitter and a battery for emitting signals to a master station or controller and the wireless security sensor system includes a magnet mounted in the window sash for actuating the sensor switch. The window frame is made from a plastics material extrusion having a hollow interior and the housing has a peripheral flange at the outer end thereof which is seated on the surface of the window frame.