TIRE INFLATION PRESSURE MONITORING APPARATUS
First Claim
1. :
- A tire inflation pressure monitoring apparatus comprising;
a tire inflation pressure obtaining unit which obtains tire inflation pressure;
an inflation pressure storing unit which stores a tire inflation pressure after start of travel of a vehicle as an after-travel inflation pressure;
a pressure reduction determining unit which determines reduction in the tire inflation pressure based on the tire inflation pressure obtained;
a reference pressure setting unit which sets larger one of the after-travel inflation pressure and a predetermined lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is determined, and sets the lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is not determined; and
an alarm unit which generates an alarm when the tire inflation pressure becomes below an alarm pressure threshold which is determined from the reference pressure.
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Abstract
A tire inflation pressure obtaining unit obtains tire inflation pressure. An inflation pressure storing unit stores a tire inflation pressure after start of travel of a vehicle as an after-travel inflation pressure. A pressure reduction determining unit determines reduction in the tire inflation pressure based on the tire inflation pressure obtained. A reference pressure setting unit sets larger one of the after-travel inflation pressure and a predetermined lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is determined, and sets the lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is not determined. An alarm unit generates an alarm when the tire inflation pressure becomes below an alarm pressure threshold which is determined from the reference pressure.
14 Citations
3 Claims
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1. :
- A tire inflation pressure monitoring apparatus comprising;
a tire inflation pressure obtaining unit which obtains tire inflation pressure; an inflation pressure storing unit which stores a tire inflation pressure after start of travel of a vehicle as an after-travel inflation pressure; a pressure reduction determining unit which determines reduction in the tire inflation pressure based on the tire inflation pressure obtained; a reference pressure setting unit which sets larger one of the after-travel inflation pressure and a predetermined lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is determined, and sets the lowest reference pressure as a reference pressure of tire inflation pressure determination when reduction in the tire inflation pressure is not determined; and an alarm unit which generates an alarm when the tire inflation pressure becomes below an alarm pressure threshold which is determined from the reference pressure. - View Dependent Claims (2, 3)
- A tire inflation pressure monitoring apparatus comprising;
Specification