Concealed wireless sensor with external antenna
First Claim
1. A wireless security device comprising:
- a. a housing suitable for being embedded within a structure comprising;
i. a security sensor circuit adapted to generate an alarm signal when activated;
ii. a radio frequency transmitter connected to the security sensor circuit for transmitting a radio frequency signal when the alarm signal is generated; and
iii. a power source for supplying operating power to the security sensor circuit and the radio frequency transmitter; and
b. a substantially flat surface mountable strip located in proximity to the housing and suitable for being mounted outside the structure, comprising an antenna coupled to the radio frequency transmitter for emitting electromagnetic energy corresponding to the radio frequency signal.
4 Assignments
0 Petitions
Accused Products
Abstract
A wireless security device, such as a door or window motion sensor, that can be mounted almost entirely within a recess of a door, window or frame, with only the antenna mounted on the surface of the door or window jamb. The wireless security device has a housing suitable for being embedded within a structure such as a door, window or frame. In the housing are a security sensor circuit adapted to generate an alarm signal when activated, a radio frequency (RF) transmitter connected to the security sensor circuit for transmitting an RF signal when the alarm signal is generated, and a power source (such as a battery, piezoelectric element, solar cell or fuel cell) for supplying operating power to the security sensor circuit and the RF transmitter. A substantially flat surface mountable strip is located in proximity to the housing and is suitable for being mounted outside (i.e. along the surface of the structure). The surface mountable strip has an antenna that is coupled to the RF transmitter for emitting electromagnetic energy corresponding to the RF signal from the transmitter. In addition, the embedded antenna provides a predictable transmission pattern resulting in increased range and reliability.
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Citations
46 Claims
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1. A wireless security device comprising:
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a. a housing suitable for being embedded within a structure comprising;
i. a security sensor circuit adapted to generate an alarm signal when activated;
ii. a radio frequency transmitter connected to the security sensor circuit for transmitting a radio frequency signal when the alarm signal is generated; and
iii. a power source for supplying operating power to the security sensor circuit and the radio frequency transmitter; and
b. a substantially flat surface mountable strip located in proximity to the housing and suitable for being mounted outside the structure, comprising an antenna coupled to the radio frequency transmitter for emitting electromagnetic energy corresponding to the radio frequency signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 45, 46)
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23. A method of installing a wireless security device comprising the steps of:
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a. providing a housing suitable for being embedded within a structure comprising;
i. a security sensor circuit adapted to generate an alarm signal when activated;
ii. a radio frequency transmitter connected to the security sensor circuit for transmitting a radio frequency signal when the alarm signal is generated; and
iii. a power source for supplying operating power to the security sensor circuit and the radio frequency transmitter;
b. embedding the housing within a recess of a structure; and
c. locating, on the surface of the structure in proximity to the housing, a substantially flat surface mountable strip comprising an antenna coupled to the radio frequency transmitter for emitting electromagnetic energy corresponding to the radio frequency signal. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification