Doppler radar motion detector for an outdoor light fixture
First Claim
1. A motion detector system for monitoring motion within a monitored area, comprising:
- an outdoor light fixture;
a Doppler radar sensor electrically coupled to the light fixture, wherein the sensor emits a first signal at a first frequency to a monitored area and receives a second signal at a second frequency from the monitored area, wherein the first and second frequencies are different; and
a microprocessor electrically coupled to the Doppler radar sensor, the microprocessor receiving and analyzing the second signal to determine whether a Doppler trigger event occurs.
6 Assignments
0 Petitions
Accused Products
Abstract
A motion detector system includes the ability to detect motion through the use of a Doppler radar sensor or a combination of PIR sensors and a Doppler radar sensor. The system includes an outdoor light fixture having one or more lamps and a housing coupled to the outdoor light fixture. The housing includes a Doppler radar sensor and a microprocessor for analyzing the signals received by the Doppler radar sensor. Alternatively, the housing includes a combination of PIR sensors and a Doppler radar sensor and a microprocessor for analyzing the signals received from these sensors. The lamps in the light fixture are activated when either the PIR sensor or the Doppler radar sensor generates a signal indicating motion within the monitored area. Alternatively, the lamps can be activated when either the PIR sensor or the Doppler radar sensor senses predetermined number of motion activities over a limited time period.
-
Citations
30 Claims
-
1. A motion detector system for monitoring motion within a monitored area, comprising:
-
an outdoor light fixture; a Doppler radar sensor electrically coupled to the light fixture, wherein the sensor emits a first signal at a first frequency to a monitored area and receives a second signal at a second frequency from the monitored area, wherein the first and second frequencies are different; and a microprocessor electrically coupled to the Doppler radar sensor, the microprocessor receiving and analyzing the second signal to determine whether a Doppler trigger event occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. An outdoor motion detector system for monitoring motion within a monitored area, comprising:
-
an outdoor light fixture; and a Doppler radar sensor electrically coupled to the outdoor lighting fixture, wherein the Doppler sensor emits a first signal to a monitored area and receives a second signal from the monitored area; at least one passive infrared (PIR) sensor electrically coupled to the outdoor light fixture, wherein the PIR sensor receives infrared signals from the monitored area; and a microprocessor electrically coupled to the Doppler radar sensor and the PIR sensor, the microprocessor receiving and analyzing the second signal to determine if a Doppler trigger event occurs and receiving and analyzing the infrared signals to determine if a PIR trigger event occurs. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for detecting motion within a monitored area with an outdoor light fixture having a Doppler radar sensor and a microprocessor, the method comprising the steps of:
-
emitting a first signal at a first frequency from the Doppler radar sensor into the monitored area; receiving a second signal at a second frequency at the Doppler radar sensor from the monitored area, wherein the first and second frequencies are different; comparing the first signal to the second signal; and determining if a Doppler trigger event occurs. - View Dependent Claims (20, 21, 22, 23)
-
-
24. A motion detector system for monitoring motion within a monitored area, comprising:
-
an outdoor light fixture; a housing coupled to the outdoor light fixture; a Doppler radar sensor disposed within the housing and electrically coupled to the light fixture, wherein the Doppler radar sensor emits a first signal to a monitored area and receives a second signal from the monitored area; and a microprocessor disposed within the housing and electrically coupled to the Doppler radar sensor, the microprocessor receiving and analyzing the second signal to determine whether a Doppler trigger event occurs. - View Dependent Claims (25, 26, 27)
-
-
28. A motion detector system for monitoring motion within a monitored area, comprising:
-
an outdoor light fixture; a Doppler radar sensor electrically coupled to the light fixture, wherein the sensor emits a first signal to a monitored area and receives a second signal from the monitored area; a microprocessor electrically coupled to the Doppler radar sensor, the microprocessor receiving and analyzing the second signal to determine whether a Doppler trigger event occurs; and at least one passive infrared (PIR) sensor electrically coupled to the microprocessor. - View Dependent Claims (29, 30)
-
Specification