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Tyre burst sensor and tyre burst monitoring method

A tire puncture sensor and tire puncture technology, applied in the field of tire puncture monitoring and tire puncture sensor, can solve the problems of reduced battery service life, the working life cannot meet the requirements of tire puncture detection, etc., and achieves strong real-time performance and long-term low power consumption. The effect of stable work

Inactive Publication Date: 2011-08-10
GUILIN SICHAO AUTO TECH
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  • Summary
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AI Technical Summary

Problems solved by technology

The survival hope of the occupants depends on timely and effective safe deceleration measures within 2s to 3s after the tire bursts; if the air pressure detection cycle of the TPMS subsystem is shortened to 100ms (the minimum requirement for real-time performance) that can be tolerated by tire burst monitoring, The power consumption of the battery will be increased by nearly 30 times, and the service life of the battery of the TPMS subsystem will be greatly reduced
Therefore, the existing TPMS cannot meet the requirements of tire burst detection in terms of real-time performance and working life.

Method used

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  • Tyre burst sensor and tyre burst monitoring method
  • Tyre burst sensor and tyre burst monitoring method
  • Tyre burst sensor and tyre burst monitoring method

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Embodiment 2

[0017] In Embodiment 2, the air pressure sensing unit adopts a sealed metal diaphragm box 1b filled with a certain pressure of nitrogen inside. The direction is the same; the magnetic sensitive switch adopts the A3212 type micro-power Hall switch 3b, which is installed in the shell 4 where the metal film box 1b can drive the permanent magnet 2 to move along the axis to change the "on" or "off" state. The PCB of the shell 4 The board 41 is used for the insulation between the Hall switch 3b and the housing 4 and the connection of the signal output circuit.

[0018] The puncture sensor is connected with the TPMS subsystem installed in the same tire (see Figure 5 ), the SUP, OUT, and GND of the Hall switch 3b are connected to the VCC, INT, and GND of the TPMS subsystem. When the tire is not inflated, the metal film box 1b is affected by its internal air pressure P, so that the permanent magnet 2 is close to the Hall switch 3b, and the Hall switch 3b is turned on under the influe...

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Abstract

The invention designs a tyre burst sensor, comprising a pressure sensing unit, a permanent magnet, a magnetic sensitive switch and a shell. As the displacement caused by shape changes of the pressure sensing unit under the influence of pressure differences before and after the tyre burst is adopted to change the distance between the permanent magnet and the magnetic sensitive switch, the magneticsensitive switch can change the switching states under the influences of the permanent magnet so as to detect the tyre burst signals. The tyre burst sensor can detect the tyre burst signals at the first time of the tyre burst, which not only accords with the characteristic of strong real-time monitoring of tyre burst but also meets the requirements of the low power stable work of a detection system.

Description

technical field [0001] The invention relates to tire safety monitoring technology for pneumatic tires for vehicles, in particular to a tire burst sensor for tire burst monitoring and a realization method. Background technique [0002] In the existing air pressure detection technology that can be used for sports tires, the TPMS (Tire Pressure Monitoring System) using wireless communication is used to maintain the battery energy of its subsystems for several years. Check the air pressure once after sleep. The survival hope of the occupants depends on timely and effective safe deceleration measures within 2s to 3s after the tire bursts; if the air pressure detection cycle of the TPMS subsystem is shortened to 100ms (the minimum requirement for real-time performance) that can be tolerated by tire burst monitoring, Then the power consumption of the battery will be increased by nearly 30 times, and the service life of the battery of the TPMS subsystem will be greatly reduced. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L17/00G01M17/02
Inventor 彭世益彭彦均
Owner GUILIN SICHAO AUTO TECH
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