Method and apparatus reporting a vehicular sensor waveform in a wireless vehicular sensor network
First Claim
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1. A method, comprising the step of:
- operating a wireless vehicular sensor node communicatively coupled to a sensor, comprising the steps of;
using a vehicle sensor state from said sensor to create a waveform characteristic and a vehicular waveform;
turning-on a vehicle presence based upon a rising edge in a latest of said waveform characteristics;
turning-off said vehicle presence based upon a falling edge in said latest of said waveform characteristics; and
generating a long report approximating said vehicular waveform for wireless transmission when said vehicle presence is turned on.
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Abstract
The application discloses using multiple wireless vehicular sensor nodes to wirelessly receive multiple, time-interleaved vehicular waveform reports from the nodes. Each vehicular waveform report approximates a raw vehicular sensor waveform observed by a magnetic sensor at the node based upon the presence of a vehicle. The vehicular waveform reports are products of this wirelessly receiving process. The application discloses apparatus supporting the above outlined process. The vehicular waveform reports may be time synchronized.
8 Citations
21 Claims
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1. A method, comprising the step of:
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operating a wireless vehicular sensor node communicatively coupled to a sensor, comprising the steps of; using a vehicle sensor state from said sensor to create a waveform characteristic and a vehicular waveform; turning-on a vehicle presence based upon a rising edge in a latest of said waveform characteristics; turning-off said vehicle presence based upon a falling edge in said latest of said waveform characteristics; and generating a long report approximating said vehicular waveform for wireless transmission when said vehicle presence is turned on. - View Dependent Claims (2, 3)
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4. A wireless vehicular sensor node, comprising:
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said wireless vehicular sensor node configured to use a vehicular sensor state from a sensor to create a vehicular sensor waveform and a waveform characteristic based upon said sensor observing the presence of a vehicle; and said wireless vehicular sensor node configured to operate a wireless transmitter based upon said waveform characteristic to send a long report across at least one wireless physical transport to approximate said vehicle sensor waveform. - View Dependent Claims (5, 6)
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7. An apparatus, comprising:
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said apparatus configured for wirelessly receiving a first vehicular waveform report from a first wireless vehicular sensor node time-interleaved based upon a time synchronization message with a second vehicular waveform report from a second wireless vehicular sensor node, whereby both said first wireless vehicular sensor node and said second wireless vehicular sensor node receive said time synchronization message; wherein said first vehicular waveform report approximates a first raw vehicular sensor waveform created by a first sensor observing the presence of a first vehicle; wherein said second vehicular waveform report approximates a second raw vehicular sensor waveform created by a second sensor observing the presence of a second vehicle; wherein said first wireless vehicular sensor node operates said first sensor; and
wherein said second wireless vehicular sensor node operates said second sensor. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An access point for wirelessly communicating with a first wireless vehicular sensor node and a second wireless vehicular sensor node, and comprising:
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said access point configured for wirelessly receiving a first vehicular waveform report from a first wireless vehicular sensor node time-interleaved with a second vehicular waveform report from a second wireless vehicular sensor node; wherein said first vehicular waveform report approximates a first raw vehicular sensor waveform created by a first sensor observing the presence of a first vehicle; wherein said second vehicular waveform report approximates a second raw vehicular sensor waveform created by a second sensor observing the presence of a second vehicle; wherein said first wireless vehicular sensor node operates said first sensor; and
wherein said second wireless vehicular sensor node operates said second sensor. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification