WIRELESS TIRE PRESSURE MONITORING SYSTEM

• US 20090179749A1
• Filed: 12/10/2008
• Published: 07/16/2009
• Est. Priority Date: 01/15/2008
• Status: Active Grant

• Current Assignee: Mobiletron Electronics Co. Ltd.
• Original Assignee: Mobiletron Electronics Co. Ltd.
• Inventors: Huang, Shiao-Hwa, Tsai, Yu- Chang, Liao, Ming-Kaun
• Granted Patent: US 7,940,163 B2
• Time in Patent Office: Days
• US Class Current: 340/447
• CPC Class Codes: B60C 23/007 having multiple wheels arranged side by side
• CPC Class Codes: B60C 23/009 having wheels on a trailer
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
• CPC Class Codes: B60C 23/0442 the transmitted signal comprises further information, e.g. instruction codes, sensor characteristics or identification data
• CPC Class Codes: B60C 23/0479 Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations

Abstract

A wireless tire pressure monitoring system includes a monitoring main unit installed in the truck-tractor of a towing vehicle, a receiving antenna electrically connected to the monitoring main unit, and a register set in a location within the wireless communication transmission range of the receiving antenna and stored with an ID code and location code of each sensor at each wheel of the platform of the towing vehicle. When the register receives a triggering signal containing an identification code of the monitoring main unit, the register compares and matches the identification code and the location code of every wheel of the platform with the identification code of the monitoring main unit and then sends matched data in the form of a wireless packet to the receiving antenna for enabling the monitoring main unit to recognize the installation location of every wheel of the platform of the towing vehicle.

Claims

1. A wireless tire pressure monitoring system for installation in a truck-tractor and a platform of a towing vehicle for recognizing locations of wheels of the towing vehicle for enabling a driver of the towing vehicle to monitor the status of every wheel of the towing vehicle, the wireless tire pressure monitoring system comprising:

a monitoring main unit installed in the truck-tractor of said towing vehicle;

a plurality of sensors respectively installed in the wheels of said towing vehicle to detect a tire pressure of the respective wheel and to wirelessly output a respective packet containing a tire pressure data and an identification code of the respective wheel;

a receiving antenna electrically connected to said monitoring main unit through a transmission line and capable of receiving the packet outputted by each said sensor for enabling said monitoring main unit to indicate an operation status of each wheel of the platform of said towing vehicle; and

a register stored with an identification code and a location code of each said sensor installed in each wheel of the platform;

wherein when said register receives a triggering signal containing an identification code of said monitoring main unit, said register compares and matches the identification code and the location code of every wheel of the platform of said towing vehicle with the identification code of said monitoring main unit and then sends matched data in the form of a wireless packet to said receiving antenna for enabling said monitoring main unit to recognize the installation location of every wheel of the platform of said towing vehicle.

2. The wireless tire pressure monitoring system as claimed in claim 1, wherein when said register sends said wireless packet to said receiving antenna, said receiving antenna is located at the truck-tractor of said towing vehicle.

3. The wireless tire pressure monitoring system as claimed in claim 2, wherein after said register sends said wireless packet to said receiving antenna, said receiving antenna is moved to be located at the platform of said towing vehicle for receiving the packets from the sensors installed in the wheels of the platform of said towing vehicle.

4. The wireless tire pressure monitoring system as claimed in claim 3, further comprising a truck-tractor receiving antenna mounted to the truck-tractor of said towing vehicle for receiving the packets from the sensors installed in the wheels of the truck-tractor of said towing vehicle.

5. The wireless tire pressure monitoring system as claimed in claim 4, wherein said truck-tractor receiving antenna is electrically connected to a truck-tractor monitoring main unit through a transmission line so that said truck-tractor monitoring main unit indicates the operation status of every wheel of the truck-tractor of said towing vehicle.

6. The wireless tire pressure monitoring system as claimed in claim 4, wherein said receiving antenna and said truck-tractor receiving antenna are electrically connected to said monitoring main unit such that said monitoring main unit indicates the operation status of every wheel of the truck-tractor and the platform of said towing vehicle.

7. The wireless tire pressure monitoring system as claimed in claim 1, further comprising a trigger stored with the identification code of said monitoring main unit, and said triggering signal received by said register is sent by said trigger.

8. A wireless tire pressure monitoring system installation procedure of the wireless tire pressure monitoring system of claim 1, comprising the steps of:

installing said register on a location of said towing vehicle within an effective wireless communication transmission range of said receiving antenna;

sending the triggering signal containing the identification code of said monitoring main unit to said register; and

arranging said receiving antenna to a location of said towing vehicle within an effective wireless communication transmission range of the sensors at the wheels of the platform of said towing vehicle.

9. The wireless tire pressure monitoring system installation procedure as claimed in claim 8, wherein said triggering signal is sent by a trigger that is stored with the identification code of said monitoring main unit and can output said triggering signal wirelessly.

10. The wireless tire pressure monitoring system installation procedure as claimed in claim 9, wherein a wireless communication frequency range of said triggering signal sent by said trigger is smaller than a wireless communication frequency range of said receiving antenna.

11. The wireless tire pressure monitoring system installation procedure as claimed in claim 8, wherein said triggering signal is directly sent to said register through buttons on a face panel at said register.