Dual technology sensor device with range gated sensitivity
First Claim
1. A method of detecting an intruder in a region, with a security device having a microwave sensor and a PIR sensor operatively coupled to a processor, comprising the steps of:
- a. determining distance information of an object in the region with the microwave sensor, b. processing the distance information to adapt a frequency response of the PIR sensor to provide a frequency adapted PIR signal, and c. determining if the object is an intruder by using the frequency adapted PIR signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and device for detecting an intruder in a region with increased performance and decreased false alarms. The security device has a microwave sensor and a PIR sensor operatively coupled to a processor. To increase the performance of the security device the device determines distance information of an object in the region with the microwave sensor, processes the distance information to adapt a frequency response of the PIR sensor to provide a frequency adapted PIR signal, and determines if the object is an intruder by using the frequency adapted PIR signal.
-
Citations
22 Claims
-
1. A method of detecting an intruder in a region, with a security device having a microwave sensor and a PIR sensor operatively coupled to a processor, comprising the steps of:
-
a. determining distance information of an object in the region with the microwave sensor, b. processing the distance information to adapt a frequency response of the PIR sensor to provide a frequency adapted PIR signal, and c. determining if the object is an intruder by using the frequency adapted PIR signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A security device for detecting an intruder in a region comprising:
-
a. a microwave sensor for providing a microwave signal, b. a PIR sensor for providing a PIR signal, and c. processing circuitry, said processing circuitry operatively coupled to said microwave sensor and said PIR sensor, adapted to;
i. determine distance information of an object in the region using said microwave signal, ii. process the distance information to adapt a frequency response of the PIR sensor to provide a frequency adapted PIR signal, and iii. determine if the object is an intruder by using the frequency adapted PIR signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
-
Specification