Motorsport TPMS: Tyre Pressure Monitoring Systems from Stack

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	v2

Stack TPMS:
Tyre Pressure Monitoring Systems

Stack TPMS - wireless, batteryless and compact. Completely re-defines tyre pressure monitoring in Motorsport: racing applications, cars, trucks & bikes.

Stack's wireless, batteryless and compact TPMS. Accurate tyre pressures are a proven performance enhancer, delivering consistent performance advantages in all levels of motorsport.

Accurate tyre pressures are a proven performance enhancer, delivering consistent performance advantages in all levels of motorsport. Dynamic tyre pressure monitoring while out on the track allows the team to optimise tyre performance over the whole lap and whole run.

Key Features

No battery or complicated sensor electronics - providing unrivalled reliability
No user maintenance required during full service life – significantly lower total life operating costs
Detect slow punctures long before the driver feels them, and long before catastrophic tyre failure
One module interrogates 1, 2 or 4 wheels – suitable for cars, trucks and bikes
Models available with 1Hz, 5Hz, or 10Hz sampling
Specialist high sampling rate modes – up to 40Hz on one wheel
Supports virtually unlimited number of wheel sets
Secure operation – each sensor has a unique serial number to ensure other teams cannot interrogate it remotely
Small, light sensor - 18 mm x 14mm; only 10g
Compact, lightweight module – 100mm x 72mm x 24mm; 140g
Pressure and Temperature data output on user configurable CAN bus.
52mm gauge provides comprehensive pressure and temperature information and alarm warnings
Calibration information is held in each sensor – no need to upload calibration tables into each interrogator module.

Stack’s Batteryless and wireless TPMS (Tyre Pressure and Temperature Monitoring System) completely re-defines tyre pressure monitoring in motorsport. Based on patented SAW sensor technology, the problems associated with mounting batteries and complicated electronics in sensors on wheels have at last been completely eliminated. Each wheel sensor comprises of a 2mm thick x 12mm diameter SAW pressure/temperature sensor and an antenna, in a 18mm diam. x 14mm cylindrical housing weighing 10g - the smallest and lightest sensor on the market!

We use, under exclusive licence for Motorsport, Transense Technologies' patented Surface Acoustic Wave (SAW) sensor technology which offers wireless, batteryless and compact operation. SAW Sensors are passive (no power required), wireless, low cost, rugged, and extremely small and lightweight, making them well suited for measuring pressure, temperature & torque (strain) in moving objects (e.g. tyres, drive shafts etc.). These characteristics offer significant advantages over technologies such as capacitive and piezoresistive sensors, which require operating power and additional electronics to make a wireless connection.

Benefit of "battery-less":

Smaller, lighter (less than 3g)
Technology much better suited to extreme conditions
Will not run out and require replacing
Does not damage tyre
Cheaper
No recycling issues in disposing of batteries

The SAW pressure & temperature sensor can be easily integrated into a racing wheel with excellent results. These systems enable the user to measure the pressure in each tyre up to 20 or more times per second. These higher sampling rates can be used to improve chassis set-up, as well as provide an early prediction of tyre failure.

Installation
TPMS isplay guage

Each wheel sensor is mounted internally on the wheel rim or valve. The Interrogator Module is mounted in a convenient location on the vehicle, and 4 antennas are each mounted locally to each wheel (within approx 0.5m of the wheel), and connected to the Interrogator Module by RF cable. The CAN data output can be connected to the 52mm colour LED display gauge or any standard data acquisition or driver display system supporting CAN.

Operation
The interrogator module takes readings of tyre pressure and sensor (air) temperature from each wheel sensor continuously at a pre-defined rate between 1Hz and 10Hz. Pressure and temperature data for each wheel is output on CAN bus, with user configurable CAN-ID messages.

System Schematic
TPMS Car Schematic

Applications

Motorsport - cars, trucks and bikes
Commercial vans & trucks
Military
Off road tactical vehicles
Personnel carriers
HDVs
Public transportation - buses and coaches.
4x4 and 6x6
Construction industry plant
Agricultural machinery

Specifications

	Pro	Lite	Units

PRESSURE MEASUREMENT
Range	0-45 or 0-150	0-45 or 0-150	PSI
Accuracy (45 PSI range at 1Hz)	± 0.125, 0.25 or 0.50	± 0.50	PSI
Resolution (45 PSI range at 1Hz)	± 0.05, 0.10 or 0.25	0.25	PSI

TEMPERATURE MEASUREMENT
Range	20-100,125 or 150	20-100, 125 or 150	°C
Accuracy (1Hz)	± 1.0	± 1.0	°C
Resolution (1Hz)	0.5	0.5	°C

OUTPUTS
CAN	✓	✓
Logger Output	✓	✓

ANTENNA

Type	Dual Band	Single Band
Dimensions (L x W x H)	140 x 60 x 23	115 x 20 x 3	mm
Connector	SMA	SMA

INTERROGATOR MODULE
Housing Material	Aluminium	Aluminium
Finishing, Colour	Hard Anodised, Black	Hard Anodised, Black
Main Connector	MIL AS 6 Pin	Mini Sureseal
RF Connectors	Panel SMA	Panel SMA
Size (L x W x H)	100 x 80 x 24	100 x 80 x 24	mm
Weight	140	140	g
Operating Temp	-20 to +80	0 to +70	°C
IP Rating	IP67	IP67
Supply Voltage	8-20	8-20	V
Average Current	360	360	mA
Peak Current	1200	500	mA

SYSTEM CONFIGURATION
PC Link	USB-Serial	USB-Serial
Maximum Wheelsets	Up to 100 x 4 wheels	Up to 3 x 4 wheels
Auto-detect Wheel Change	✓
Config. CAN MSG-Ids	✓	✓

SENSORS
Weight	10	10	g
Operating Temp Range	20 - 100, 125 or 150	20 - 100	°C
Antenna	Whip	Whip

MEASUREMENT RATES
Data Output Rate	1,5,10, 20, 40	1	Hz

DRIVER DISPLAY
Display Type	52mm LED Gauge	52mm LED Gauge
Individual Pressure/Temp. Display	✓	✓
Low/High Pressure Alarms	✓	✓
Low/High Temp. Alarms	✓	✓
Cold Tyres Warning	✓	✓

Product Details

TPMS Lite Monitoring System
ST9351	TPMS Lite 4 Wheel Tyre Pressure & Temperature Monitoring System

TPMS Lite Sensor Kits & Spare Parts
ST9302-4	Additional 4 wheel TPMS Sensor & Valve stem kit
ST9302	Replacement TPMS Lite Sensor (valve stem not included)

TPMS PRO Interrogator Modules
ST9311	4 Ch PRO 1Hz Interrogator Module (1Hz/ch; 0.25 PSI resolution)
ST9312	4 Ch PRO 1Hz Interrogator Module (1Hz/ch; 0.10 PSI resolution)
ST9313	4 Ch PRO 5Hz Interrogator Module (5Hz/ch; 0.10 PSI resolution)
ST9314	4 Ch PRO 10Hz Interrogator Module (10Hz/ch; 0.10 PSI resolution)
ST9316	4 Ch PRO 1Hz Interrogator Module (1Hz/ch; 0.05 PSI resolution)
ST9317	4 Ch PRO 5Hz Interrogator Module (5Hz/ch; 0.05 PSI resolution)
ST9318	4 Ch PRO 10Hz Interrogator Module (10Hz/ch; 0.05 PSI resolution)

45PSI / 3 Bar TPMS Sensors
ST9302	45PSI/3Bar, +/- 0.5PSI (@1Hz) TPMS Sensor (over 20-100C temp range)
ST9303	45PSI/3Bar, +/- 0.5PSI (@1Hz) TPMS Sensor (over 20-125C temp range)
ST9304	45PSI/3Bar, +/- 0.25PSI (@1Hz) TPMS Sensor (over 20-100C temp range)
ST9305	45PSI/3Bar, +/- 0.25PSI (@1Hz) TPMS Sensor (over 20-125C temp range)
ST9306	45PSI/3Bar, +/- 0.25PSI (@1Hz) TPMS Sensor (over 20-150C temp range)
ST9307	45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor (over 20-100C temp range)
ST9308	45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor (over 20-125C temp range)
ST9309	45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor (over 20-150C temp range)

150 PSI / 10 Bar TPMS Sensors
ST9352	150PSI/10Bar, +/- 0.5PSI (@1Hz) TPMS Sensor (over 20-100C temp range)
ST9353	150PSI/10Bar, +/- 0.5PSI (@1Hz) TPMS Sensor (over 20-125C temp range)
ST9354	150PSI/10Bar, +/- 0.25PSI (@1Hz) TPMS Sensor (over 20-100C temp range)
ST9355	150PSI/10Bar, +/- 0.25PSI (@1Hz) TPMS Sensor (over 20-125C temp range)
ST9356	150PSI/10Bar, +/- 0.25PSI (@1Hz) TPMS Sensor (over 20-150C temp range)
ST9357	150PSI/10Bar, +/- 0.125PSI (@1Hz) TPMS Sensor (over 20-100C temp range)
ST9358	150PSI/10Bar, +/- 0.125PSI (@1Hz) TPMS Sensor (over 20-125C temp range)
ST9359	150PSI/10Bar, +/- 0.125PSI (@1Hz) TPMS Sensor (over 20-150C temp range)

Display Module, Cables and Mounting Accessories
ST9330	52mm TPMS LED Display Gauge

Cables and display gauge mounting accessories available. Please contact your Stack dealer for details.

In the interests of continuous product improvement, we reserve the right to alter without notice the specifications and features described above. Please contact us for further information: sales@stackltd.com.

This page last revised

Frequently Asked Questions

Further information can be found in our Troubleshooting Knowledgebase and FAQ sections.

Your Stack dealer will be happy to assist you further.

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	In the interests of continuous product improvement, we reserve the right to alter without notice the specifications and features described above.