Pressure monitoring system

A technology for air pressure monitoring and air pressure measurement, which is used in inflation body pressure measurement, signal transmission system, tire measurement, etc., and can solve problems such as no longer meaningful

Inactive Publication Date: 2004-05-19
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In addition, even in the case where the ID code of each sensor unit is registered in the monitoring unit in a state related to the tire position through the above operation, if the vehicle user rotates the position of the tire in order to keep the wear condition of the tire consistent, Then the relationship between the registered ID code and the tire position is no longer meaningful

Method used

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Embodiment Construction

[0025] An embodiment of the present invention will be described below with reference to the accompanying drawings. This embodiment relates to an example of applying the tire pressure monitoring system according to the present invention to a four-wheeled passenger vehicle. However, it is also possible to apply the tire pressure monitoring system according to the present invention to other vehicles such as delivery trucks and buses.

[0026] figure 1 A structure of the tire pressure monitoring system according to this embodiment is schematically shown. Such as figure 1 As shown, a tire pressure monitoring system conventionally designated by reference numeral 1 includes sensor units 10, 20, 30 and 40 disposed in vehicle tires 51, 52, 53 and 54, respectively, for measuring tire pressure and for Send a signal containing barometric pressure measurements. In addition, the tire pressure monitoring system includes a monitoring unit 100 located on the side of the vehicle for receivi...

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Abstract

Provided is a tire air pressure monitoring system capable of grasping the tire positions where there are sensor units even in the case of tire rotation. In the tire air pressure monitoring system, a trigger signal is transmitted from a transmission coil antenna to only the corresponding sensor unit in a manner such that a magnetic field is used as a medium and, upon receipt of the trigger signal, the sensor unit measures a tire air pressure and others and transmits a transmission signal including the measurement values to a monitoring unit. The monitoring unit makes a decision on the tire position where there is the sensor unit on the basis of the transmission signal from the sensor unit.

Description

technical field [0001] The invention relates to a tire air pressure monitoring system, which is used for monitoring the air pressure state of each tire of a vehicle. Background technique [0002] Hitherto, various types of systems for monitoring the air pressure of each tire of a vehicle have been proposed. Such a tire pressure monitoring system is disclosed in Japanese Patent No.3212311, in which a sensor unit is arranged in each tire, and the system also has a monitoring unit; wherein, the sensor unit includes a a sensor for measuring tire pressure and a transmitter for transmitting tire pressure measurements; and a monitoring unit for receiving signals from the sensor unit to provide a warning when each tire pressure measurement falls below a predetermined value. [0003] In such a conventional tire pressure monitoring system, in order to grasp the position of the tire on which each sensor unit is mounted, the designated ID code assigned to each sensor unit is registered...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L17/00B60C19/00B60C23/00B60C23/02B60C23/04B60C23/20G08C17/02
CPCB60C23/0408B60C23/00
Inventor 奥村亮三
Owner DENSO CORP
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