Patent ID: 7382238
Filing Date: 2008-06-03
Classification: G08G

Abstract:
1. A circuit apparatus for a wireless vehicular sensor node, comprising: means for maintaining a clock count to create a task trigger and a task identifier, both provided to a means for controlling the electrical power and a means for operating the node; an electrical coupling to a power source including at least one battery, providing electrical power to the means for maintaining, the means for controlling said electrical power, and the means for operating said node; said means for controlling said electrical power uses said task trigger and said task identifier to control electrical power distribution to a magnetic sensor, to a radio transceiver, a means for using said magnetic sensor; said means for operating said node by receiving said task trigger and said task identifier to perform transmitting with said radio transceiver a message based upon a vehicle sensor state of said magnetic sensor when a vehicle-present is asserted; and said means for using said magnetic sensor creates said vehicle sensor state of said magnetic sensor and creates said vehicle-present presented to said means for controlling and said means for operating said node to enable said transmitter to transmit said message.