Tire Pressure Monitoring System
Tire Pressure Monitoring Unit

RF signal from Tire Pressure Sensor is received by Tire Pressure Monitoring Unit(Tire Pressure Monitoring System Unit),The received RF signal is demodulated to baseband signal and processed by Tire Pressure Monitoring Unit. Then the processed tire data is delivered to instrument cluster to send warning signal by CAN network. Based on the warning signal on instrument cluster, driver will deal with abnormal case in time and the risk occurrence probability will be significantly reduced.

Feature and benefits

High pressure warning, Low pressure warning, High temperature warning, Sensor signal loss warning and Low battery warning.

CAN communication,UDS Diagnosis and Software-upgrading via Bootloader.

Manual learning in production line.

Auto learning function during aftermarket and repairing.

Auto temperature compensation function.

Easy layout and installation in vehicle due to small profile.

Light weight with the whole weight less than 65 gram.

Application

Tire pressure monitoring system(TPMS):Wireless communication link is made between TPS(Tire Pressure Sensor )and TPU(Tire Pressure Monitoring Unit) after the real-time tire pressure and temperature data is captured by TPS. If abnormal condition occurs such as high-pressure、low pressure and high temperature ,warning signal will be sent to instrument cluster by TPMS receiver. Thus, driver may deal with abnormal case in time and the risk occurrence probability will be significantly reduced.

 

 

Operation 

 

 

Basic principle

 

Continuous receiving TPS signal mode is entered as soon as TPU goes to “ON “ status. Tire pressure or temperature information of each tire is updated and shown on the instrument cluster in real-time .Exact tire location information along with the graphics、words or sound warning will also be indicated after the tire pressure or temperature threshold is exceeded.

 

Connection options

 

Connection system customized by customer requirement.

 

Packaging Options

 

Custom packaging can be provided to meet customer requirement, please contact KESENS Engineering for detail.

 

 

Functional Characteristics 

 

Parameters Condition Min Rated Max Unit
Modulation Mode FSK        
Baud Rate -40℃ ~ 85 ℃   9600

 

Bit/s
Code Format Manchester Code        
Center Frequency 25℃   433.92   MHz
Receiving Sensitivity      

-96

dBm
Operating Range   -40   85
Storage Range   -40   85
Operating Voltage   9   16 V
Operating Current       80 mA
Quiescent current       1.5 mA
Tire Pressure Sensor

Tire pressure sensor(TPS)mainly focus on data collection of tire pressure and temperature and transforming the collected analog signal to wireless RF modulated signal such that it can be received by Tire Pressure Monitoring System (TPMS) RF receiver.

Feature and benefits

TPS is the combination of sensor itself and valve stem without the additional valve; It is more fine and convenient in charge or discharge scenario. Also, better anti￾theft function is available.

Sensing of tire pressure、tire temperature and accelerated speed signal etc.

Auto learning function during aftermarket and repairing.

Manual learning in production line.

Enable to install to the tires with different size and type.

Light weight with the whole weight less than 25 gram.

Application

TPS is designed to application in most tubeless tire. TPS installed in the inside of tires can monitor tire pressure and tire temperature, then transmit the message with wireless signal to the tire pressure receiver.

 

 

Operation  

 

 

Basic principle

 

When TPS is in normal operation mode,these analog signal such as tire pressure、tire temperature、acceleration will be continuously sampled. After these analog signal is converted to digital signal inside the TPS, TPS will radiate the digitalized signal to the free space with enough power so that the TPS signal will be received by TPMS receiver efficiently.

 

Connection options

 

Metal or plastic valve cap available followed by customer requirement.

 

Packaging Options

 

Custom packaging can be provided to meet customer requirement, please contact KESENS Engineering for detail.

 

 

Functional Characteristics 

 

Parameters Condition Min Rated Max Unit
HF Modulation Mode FSK        
Baud Rate -40℃ ~ 85 ℃   9600

 

Bit/s
Code Format Manchester Code        
Center Frequency 25℃   433.92   MHz
RF Power @ 3m peak   70 75

77

dbuV/m
Transmission duration Frame Duration   8.53   ms
Operating Range   -40   85
Storage Range   -40   85
LF Carrier Frequency 25℃   125KHz    
LF Modulation Mode ASK        
Operating Current       8.5 mA
Quiescent current       400 nA