Tire monitoring system

• US 20040095231A1
• Filed: 11/19/2002
• Published: 05/20/2004
• Est. Priority Date: 09/05/2001
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Ichinose, Hidemi
• Granted Patent: US 7,019,628 B2
• Time in Patent Office: Days
• US Class Current: 340/442
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver

Abstract

Door opening and closing control information transmitted from a portable transmitter 3 is received at a receiving apparatus 20 to drive a door locking mechanism 4. A tire sensor unit 10 mounted on each tire 2 detects tire pressure and tire internal temperature and radio-transmits those data and identification information. A signal transmitted from the tire sensor unit 10 is received at the receiving device 20 to be supplied to a display device 30. A tire abnormality judging section 31 lights a warning lamp 32 when the air pressure drops to the lower level than an air pressure drop detecting threshold value and the temperature is higher than a temperature rise detecting threshold value. The tire abnormality judging section 31 also sounds an alarm buzzer 33 to inform the tire abnormality.

Claims

1. A tire monitoring system comprising:

a tire sensor unit mounted on each tire of a car to transmit the information on a tire condition by radio;

a receiving device provided on the side of a car body to receive the information on the tire condition transmitted from the tire sensor unit; and

a display device for displaying the tire condition based on the information on the tire condition received at the receiving device,

characterized in that the receiving device is constructed by utilizing a receiver for a keyless entry system for the car, and the tire sensor unit is designed to transmit in a radio signal method whereby the receiver for the keyless entry system can receive.

2. A tire monitoring system comprising:

a tire sensor unit mounted on each tire of a car to transmit the information on a tire condition by radio;

a receiving device provided on the side of a car body to receive the information on the tire condition transmitted from the tire sensor unit; and

a display device for displaying the tire condition based on the information on the tire condition received at the receiving device;

characterized in that the receiving device is constructed by utilizing a receiver for a keyless entry system for the car, and the tire sensor unit is designed to transmit the car identification information for identifying the car, the tire identification information for identifying the tire, and the information on the tire condition in a radio signal method whereby the receiver for the keyless entry system can receive.

3. The tire monitoring system according to claim 2, wherein the display device is designed to display the abnormality of a tire condition for each tire based on the information on the tire condition received at the receiving device.

4. The tire monitoring system according to claim 2, wherein the tire sensor unit is provided with a pressure sensor for detecting tire pressure and a temperature sensor for detecting the temperature inside a tire and radio-transmits the information on the tire pressure and the temperature inside the tire as the information on the tire condition, and wherein the display device is designed to display the abnormality of tire pressure and the abnormality of temperature for each tire based on the information on the tire pressure and the temperature inside the tire received via the receiving device.

5. The tire monitoring system according to claim 2, wherein the tire sensor unit is provided with a pressure sensor for detecting tire pressure and a temperature sensor for detecting the temperature inside a tire and radio-transmits the information on the tire pressure and the temperature inside the tire as the information on the tire condition, and wherein the display device is designed to display the tire to be abnormal in the case where the tire pressure is lower than a predetermined value and the temperature inside the tire is higher than a predetermined value, based on the information on the tire pressure and the temperature inside the tire received via the receiving device.

6. The tire monitoring system according to claim 2, wherein the tire sensor unit is provided with a pressure sensor for detecting the tire pressure and a temperature sensor for detecting the temperature inside a tire and designed to transmit the tire abnormality information in the case where the tire pressure is lower than a predetermined value and the temperature inside the tire is higher than a predetermined value.

7. The tire monitoring system according to claim 2, wherein the tire sensor unit is provided with an identification information storage section for storing a car identification information for identifying a car and a tire identification information for identifying a tire and designed to be able to renew the car identification information and the tire identification information stored in the identification information storage section via a data communication section.