Wireless vehicle detection system and associated methods having enhanced response time
First Claim
1. A wireless vehicle detection system comprising:
- one or more spaced-apart sensor pods positioned in or below, and yet in close proximity to, a plane of a surface of a road, adapted to detect received communication signal strength, and operationally adapted to adjust transmitting power based upon said communication signal strength to thereby conserve power usage, each sensor pod including (1) a vehicle detector controller adapted to determine presence of one or more vehicles, (2) a communication controller connected to the vehicle detector and adapted to communicate data relating to the presence of one or more vehicles, the vehicle detector controller and the communication controller each having separate clock cycles and separately controlled sleep cycles for drawing power, (3) a battery, (4) a hybrid layer capacitor connected in parallel electrically to the battery to protect the battery from degradation at transmit power levels and extend the life of the battery; and
(5) a low profile antenna positioned in a substantially horizontal orientation when positioned within an enclosure of the sensor pod and adjacent a top end of the enclosure when the sensor pod is positioned in or below the surface of the road, the antenna adapted to allow for and support one or more communication frequencies in the 902-928 MHz ISM radio frequency band, the low profile antenna also having an antenna housing having a substantially hollow interior portion to allow communication circuitry components to be mounted at least partially within the antenna housing thereby decreasing vertical space requirements within the enclosure of the sensor pod;
a base station adapted to provide data processing and storage for the wireless vehicle detection system; and
an access point adapted to communicate with the base station wirelessly at a communication frequency of approximately 2.4 GHz or via one or more wires, and further adapted to communicate with the one or more sensor pods at one or more communication frequencies in the range of 902-928 Mhz.
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Accused Products
Abstract
Embodiments of the invention include a wireless vehicle detection systems and associated methods with extended range and battery life. The wireless vehicle detection system can include a plurality of sensor pods in communication with an access point without repeaters. Embodiments of the sensor pod can include a vehicle detector controller adapted to determine the presence of vehicles and a communication controller connected to the vehicle detector and adapted to transmit data 300 feet or more to an access point, which in turns communicates with the base station. To extend the battery life of the sensor pod, the sensor pod can be adapted to detect received communication signal strength and adjust transmitting power based upon said strength to thereby conserve power. Embodiments of the sensor pod can also include a battery connected in parallel to an HLC capacitor to further extend the life of the battery.
104 Citations
18 Claims
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1. A wireless vehicle detection system comprising:
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one or more spaced-apart sensor pods positioned in or below, and yet in close proximity to, a plane of a surface of a road, adapted to detect received communication signal strength, and operationally adapted to adjust transmitting power based upon said communication signal strength to thereby conserve power usage, each sensor pod including (1) a vehicle detector controller adapted to determine presence of one or more vehicles, (2) a communication controller connected to the vehicle detector and adapted to communicate data relating to the presence of one or more vehicles, the vehicle detector controller and the communication controller each having separate clock cycles and separately controlled sleep cycles for drawing power, (3) a battery, (4) a hybrid layer capacitor connected in parallel electrically to the battery to protect the battery from degradation at transmit power levels and extend the life of the battery; and
(5) a low profile antenna positioned in a substantially horizontal orientation when positioned within an enclosure of the sensor pod and adjacent a top end of the enclosure when the sensor pod is positioned in or below the surface of the road, the antenna adapted to allow for and support one or more communication frequencies in the 902-928 MHz ISM radio frequency band, the low profile antenna also having an antenna housing having a substantially hollow interior portion to allow communication circuitry components to be mounted at least partially within the antenna housing thereby decreasing vertical space requirements within the enclosure of the sensor pod;a base station adapted to provide data processing and storage for the wireless vehicle detection system; and an access point adapted to communicate with the base station wirelessly at a communication frequency of approximately 2.4 GHz or via one or more wires, and further adapted to communicate with the one or more sensor pods at one or more communication frequencies in the range of 902-928 Mhz. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless sensor pod adapted to be positioned in or below and yet in close proximity to a plane of a surface of a road, the sensor pod comprising:
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(1) a vehicle detector controller adapted to determine presence of one or more vehicles; (2) a communication controller adapted to detect received communication signal strength and operationally adapted to adjust transmitting power based upon said communication signal strength to thereby conserve power, the communication controller further adapted to transmit data 300 feet or more; (3) a battery; (4) a hybrid layer capacitor connected in parallel electrically to the battery to protect the battery from degradation at transmit power levels and extend the life of the battery; and (5) an antenna positioned in a substantially horizontal orientation when positioned within the sensor pod and when the sensor pod is positioned in or below the surface of the road, the antenna adapted to allow for and support 902-928 MHz ISM radio frequency band, the antenna also having an antenna housing having a hollow interior to allow communication circuitry components to be mounted at least partially inside the antenna housing thereby decreasing vertical space requirements. - View Dependent Claims (10, 11, 12)
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13. A method for detecting one or more vehicles, the method comprising the steps of:
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installing a sensor pod in or below and in close proximity to a plane of a surface of a road, the sensor pod adapted to detect and receive communication signal strength and operably adapted to adjust transmitting power based upon said communication signal strength to thereby conserve power, the sensor pod including (1) a vehicle detection controller adapted to determine presence of one or more vehicles, (2) a communication controller adapted to communicate data relating to the presence of one or more vehicles, (3) a battery, (4) a hybrid layer capacitor connected in parallel electrically to the battery to protect the battery from degradation at transmit power levels, and (5) an antenna positioned in a substantially horizontal orientation when positioned inside the sensor pod and when the sensor pod is positioned in or below the surface of the road, the antenna adapted to allow for and support one or more communication frequencies in the 902-928 MHz ISM radio frequency band, the antenna also having an antenna housing having a hollow interior to allow communication circuitry components to be mounted at least partially inside the antenna housing; transmitting data relating to the presence of one or more vehicles from the sensor pod to an access point positioned remote the sensor pod; and providing data processing to a traffic controller by a base station positioned remote from the access point and the sensor pod, the data processing being responsive to the base station receiving data from the access point. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification