Detector for sunken condition of vehicle
First Claim
1. A detector for sunken condition of a vehicle, said detector comprising:
- a sensor for measuring air pressure inside a tire; and
a controller that monitors data on tire pressure data measured by said sensor and identifies a sunken condition of said vehicle when a specified rate of change in said data is momentarily observed.
1 Assignment
0 Petitions
Accused Products
Abstract
A sunken condition of a vehicle provided with a sensor for measuring air pressure inside a tire, a communication device that carries out wireless communications between a vehicle main body and a tire, a steering torque sensor that measures steering torque, a sensor for measuring rotary speeds of driver and follower wheels of the vehicle or a navigating apparatus including a global positioning system and a dead-reckoning device is detected by a detector having a controller without requiring a sensor for detecting the sunken condition. The controller identifies a sunken condition on the basis of a momentary change in detected data, the status of communication from the sensor, a drop in the measured steering torque, a relative drop of the rotary speed of a follower wheel with respect to that of a driver wheel or a disagreement in measured position data by the navigating apparatus.
23 Citations
14 Claims
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1. A detector for sunken condition of a vehicle, said detector comprising:
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a sensor for measuring air pressure inside a tire; and
a controller that monitors data on tire pressure data measured by said sensor and identifies a sunken condition of said vehicle when a specified rate of change in said data is momentarily observed. - View Dependent Claims (2, 3, 4)
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5. A detector for sunken condition of a vehicle, said detector comprising:
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a communication device that carries out wireless communications between a vehicle main body and a tire; and
a controller that monitors status of said wireless communications and identifies a sunken condition of said vehicle when a status wherein said wireless communications remain impossible continues over a specified length time or a specified number of times. - View Dependent Claims (6, 7, 8)
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9. A detector for sunken condition of a vehicle, said detector comprising:
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a steering torque sensor that measures steering torque; and
a controller that monitors data on steering torque measured by said steering torque sensor and identifies a sunken condition of said vehicle based on a drop in the measured steering torque. - View Dependent Claims (10)
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11. A detector for sunken condition of a vehicle, said detector comprising:
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a sensor for measuring rotary speeds of driver and follower wheels of said vehicle; and
a controller that monitors data outputted from said sensor and identifies a sunken condition of said vehicle based on a relative drop of rotary speed of a follower wheel. - View Dependent Claims (12)
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13. A detector for sunken condition of a vehicle, said detector comprising:
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a global positioning system;
a dead-reckoning device for sensing rotations of wheels of said vehicle and calculating motion and rotary angle of said vehicle based on said sensed rotations of said wheels; and
a controller that monitors position data of said vehicle obtained by said global positioning system and by said dead-reckoning device and identifies a sunken condition of said vehicle based on disagreement between said position data. - View Dependent Claims (14)
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Specification