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System for obtaining vehicular traffic flow data from a tire pressure monitoring system

  • US 9,349,287 B1
  • Filed: 09/15/2015
  • Issued: 05/24/2016
  • Est. Priority Date: 09/16/2014
  • Status: Active Grant
First Claim
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1. A system to estimate traffic flow data used in conjunction with a vehicle having at least four (4) wheels on which the vehicle travels, a tire pressure monitoring system (TPMS) which includes a Tire Pressure Monitor (TPM) electric control unit (ECU) inside the vehicle, a separate tire pressure monitor (TPM) sensor respectively installed in at least four wheels of the vehicle, a visual tire pressure information member positioned to provide TPM information from the TMP ECU received from each TPM sensor to a driver while the vehicle is being driven, each TPM sensor having a unique identification code to periodically broadcast data of the current pressure and temperature in each respective tire and further broadcast a radio frequency (RF) signal from each respective TPM sensor in each respective one of the wheels of the vehicle to the TPM ECO (“

  • TPM installed vehicle”

    ), the system to estimate traffic flow data comprising;

    a. positioning a first encrypted TPM detection transceiver having a first given detection range at a first location where said TPM installed vehicle passes within the second given detection range, the first encrypted transceiver pre-programmed to capture and decode RF signals broadcast by said TPM installed vehicle'"'"'s TMP sensors and obtaining each unique identification code associated with each specific TPM sensor and time stamping each unique identification code (collectively first TPM sensor data) and transmitting the first TMP sensor data to said secure central server in a first encrypted data message;

    b. positioning a second encrypted TPM detection transceiver having a second given detection range at a second location where said TPM installed vehicle passes within the second given detection range, the second encrypted transceiver pre-programmed to capture and decode RF signals broadcast by said TPM installed vehicle'"'"'s TMP sensors and obtaining each unique identification code associated with each specific TPM sensor and time stamping each unique identification code (collectively second TPM sensor data) and transmitting the second TMP sensor data to said secure central server in a second encrypted data message; and

    c. when the same identification is transmitted in the first encrypted data message and the second encrypted data message, the central server converts the encrypted data messages to an estimate of travel time, delay and origination-destination information of said TMP installed vehicle.

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