Low Tire Pressure Warning System

Presented By Suma M R

Low Tire Pressure Warning System

It is a warning system for low tire pressure that works when the car is in motion.

It utilizes a tire-mounted pressure sensor.

This pressure sensor signals a loss in tire pressure and alert the driver to stop safely before the condition worsen.

Hypothetical system for low tire pressure warning system

Concepts that can be utilizedIn a hypothetical system, tire pressure sensor continually measures the tire pressure and the signals from the sensor mounted on the rolling tire is coupled by a media to the signal processor.

As the pressure drops below critical limit, a warning is sent to the display panel that the tire has low pressure.

The difficult part of this system in the link between sensors and processors. It requires major modification to wheel-axle assembly and is often not accepted.

Low tire pressure warning systemThe difficult part of this system is the link from the tire

pressure sensor mounted on rotating tire to the processor

Link can be provided by using small radio transmitter mounted on tire.

Transmitter sends signal to receiver in the car body.

The distance from the transmitter to receiver is a few feet ,low power required.

Low Tire pressure warning systemAnother concept is to link the sensor and signal processor

by the use of radio transmitter and receiver assembly.

Using modern solid state electronic technology , very low power consumption is achieved.

Problem with this method is electrical power for transmitter, so a tiny battery is made in use which provide enough power for its operation

Low Pressure Sensor Concept Blocks

Low pressure sensor conceptThis scheme uses a sensor switch which is usually held open by normal tire pressure on a manually connected diaphragm. Low pressure allows spring-loaded switch to close thereby turning on the micro transmitter .

The signal processor then activates a warning lamp for the driver and remains on until the driver manually resets it through instrument panel.

Transmitter will remain on until the whole battery drains out, but due to the use of signal processor, the low-pressure status can be stored in processor memory and warning can be given if the transmitter quits operating

Low tire pressure warning systemTransmitter will remain on until the whole battery drains

out, but due to the use of signal processor, the low-pressure status can be stored in processor memory and warning can be given if the transmitter quits operating

It helps driver to know the tire pressure status when the vehicle parked is turned on

Another scheme for monitoring tire pressure is to have a transmitter/receiver mounted on the car.

In this scheme the tire pressure sensor is a form of passive transponder that is interrogated by the transmitter/receiver system

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