Method and apparatus for self-powered vehicular sensor node using magnetic sensor and radio transceiver
First Claim
1. A circuit apparatus comprisinga vehicle sensor node configured to sense a presence of a vehicle, comprising:
- a clock timer configured to maintain a clock count to create a task trigger and a task identifier;
a radio transceiver and a magnetic sensor, both configured to operate based upon said task identifier, when said task trigger is active.
3 Assignments
0 Petitions
Accused Products
Abstract
The invention includes a vehicular sensor node, circuit apparatus and their operations. Power from power source is controlled for delivery to radio transceiver and magnetic sensor, based upon a task trigger and task identifier. The radio transceiver and the magnetic sensor are operated based upon the task identifier, when the task trigger is active. The power source, radio transceiver, magnetic sensor, and circuit apparatus are enclosed in vehicular sensor node, placed upon pavement and operating for at least five years without replacing the power source components. Magnetic sensor preferably uses the magnetic resistive effect to create magnetic sensor state. Radio transceiver preferably implements version of a wireless communications protocol. The circuit apparatus may further include light emitting structure to visibly communicate during installation and/or testing, and second light emitting structure used to visibly communicate with vehicle operators. Making filled shell and vehicular sensor node from circuit apparatus.
17 Citations
20 Claims
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1. A circuit apparatus comprising
a vehicle sensor node configured to sense a presence of a vehicle, comprising: -
a clock timer configured to maintain a clock count to create a task trigger and a task identifier; a radio transceiver and a magnetic sensor, both configured to operate based upon said task identifier, when said task trigger is active. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A vehicular sensor node for sensing a presence of a vehicle, comprising:
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a radio transceiver; a magnetic sensor; a computer coupled with a clock timer to maintain a clock count to create a task trigger and a task identifier; and said computer coupled to a radio transceiver and a magnetic sensor to operate said radio transceiver and said magnetic sensor based upon said task trigger and said task identifier. - View Dependent Claims (19, 20)
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Specification