TPMS is short for Tire-Pressure Monitoring System, although it is commonly known as “tire pressure sensor“, which is a more common way of saying the same. The TPMS is one such active safety elements which while simple, avoids problems since it reminds us of the importance of tire pressure. In itself, the system function is this: warn the driver of a loss of air pressure in the tires. Let us remember that the tire is designed to operate with a certain pressure, which is indicated by the manufacturer. With an inadequate air pressure increases fuel consumption, tire tread wear is uneven, the vehicle loses grip the ground -mainly with wet-soil increases the braking distance and run the risk of losing stability and even There is a danger that the jump wheel rim and tire burst. The TPMS cuts the bud all these problems.
How does it work then?
How do you do it? Warning the driver, through light and acoustic signals when the air pressure is too low in terms of what is established in the system. To explain the operation of the tire pressure control should take into account that there is a direct TPMS and indirect TPMS.
TPMS, tire pressure sensor
Low pressure warning and fault warning in the system
In direct TPMS, one tire pressure sensor placed on each wheel measures air pressure and transmits the data to a control unit that can provide data broken down by each tire, a lump sum or simply can warn when the actual data do not match those that are programmed. As always, when it comes to electronic-based systems, everything is possible in the design of the control unit and each has their own methods.
The sensors incorporate a small battery which gives them autonomy to operate without relying on the power of the vehicle. These sensors can measure the pressure and the tire temperature, in addition to informing the system through low frequency waves, its position on the tire and the state of the battery. When changing tires, exchange them or perform any other maintenance operation it is necessary to recalibrate the sensors to avoid measuring problems.
iTPMS or indirect TPMS
The iTPMS employs no physical sensor to determine the tire pressure but measures the pressure indirectly from the rotational speed of each wheel together with other values that are obtained externally. For example, the first pressure iTPMS calculated from the difference in diameter featuring a deflated tire relative to another that has the correct pressure. For these calculations are employed ABS rotation sensors. Find more info here.
The second generation techniques employed iTPMS spectrum analysis using complex software applications that determine the relationship between the frequency variations as they appear in the tire due to the air pressure. Nowadays, the iTPMS is usually integrated into the control unit ABS and ESP and compares the tire rotation speed to determine when an error occurs in air pressure.
The bottom line.
The iTPMS offers therefore relative values, and this is a problem inherent in the system. As identifies a binary form, which is a problem. Furthermore, in poor grip conditions, can give wrong measurements if, during operation, adhesion loss is registered with the floor. At the end of the day, and more electronic aids we have, there’s nothing like a monthly inspection, done by ourselves, with the tire cold. We will take upon us the many problems with this simple operation. TPMS is very important
Always visit http://tiresensorwarehouse.com/ if you need more information.