LDL Technology Tire Watch Tire Pressure Monitoring System
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© © September, 2007 Copyright LDL Technology All rights reserved 1 SPORT TIRE WATCH TIRE WATCH SPORT FOR SPORT FOR CAR Presentation CAR Presentation
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Transcript of LDL Technology Tire Watch Tire Pressure Monitoring System
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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TIRE WATCHTIRE WATCH SPORT FOR SPORT FOR CAR PresentationCAR Presentation
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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IncreaseIncrease (Tyres) performance(Tyres) performance
-50
-45
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-25
-20
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-10
-5
0
-30 -20 -10 0 10 20 30
Delta P from tire reference (%)
Tir
e l
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-60 -50 -40 -30 -20 -10 0 10 20 30 40
Delta P from tire reference (%)
Fu
el
co
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(%
)
Insure tire pressure level controlwith high accuracy (+/- 20 m bar)
Insure tire carcass temperature level control (accuracy : +/- 2°°°°C)
1. Road-holding
2. Precision
3. Abrasion
4. Tire choice
Result :
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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Architecture PresentationArchitecture Presentation
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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Main Features
• Pressure & temperature information for each wheel
(LCD display)
• P & T° thresholds adjustable
• Visual alarm when a defect is detected
Wireless System descriptionWireless System description
Wheel unit sensor (WUS)
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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TW system enables you to pre-equipped up to 4 tire sets (total 16 wheels: 4 for each location ����Unique ID code learned manually on the display)
Rear Left Set
Front Left Set
Rear Right Set(4 wheels)
Front Right Set
+
+
+
+
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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Change menu (Pressure or Temperature)Alert thresholds value settingBack light
Visual alertON/OFF
MenuValidationBack light
Pressure BAR / PSI or Temperature °°°°C / °°°°F
pressure valuesfor each tire Temperature values
for each tire
Wireless LCD display descriptionWireless LCD display description
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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Mechanical
• 35 x 20 mm LCD Screen
• 70 x 45 x 25 mm Housing
• Weight < 85g
• CR 2450 battery
Wireless LCD displayWireless LCD display
Power supply descriptionPower supply description
Fixing descriptionFixing description
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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WUS conceptWUS concept
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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RF Stage
Micro controller8 Bit RISC
PressureSensor
Power Management
Battery
TemperatureSensor
RF Antenna
Battery Monitor
Acceleration SensorLF Stage
(learning/Diagnosisprocedure
Life time : > 12 months at 100% transmission (≈ 5 race seasons)
Monitored temperature range : - 40°C to +125°C (temperature scenario)
Measuring pressure range : 0 to 3,5 bar
Monitored acceleration range : 0 to 2000G (360 km/h @ 19’)
Wheel unit weight : 47 g
Pressure accuracy : ± 20 m bar
Temperature accuracy : ± 2°C
Emission RF : FSK Manchester 434 MHz (CEE), 9.6 k bits/s
Application schematic
Wheel Unit Sensor (WUS) FeaturesWheel Unit Sensor (WUS) Features
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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LF TRIGGERLF TRIGGER
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LF Trigger FeaturesLF Trigger Features
LF Trigger permits to switch ON and OFF your WUS in order to preserve battery life duration.
ON BUTTON = LF Wake-up
Push ON button (more than 20 sec) to wake up your WUS and activate the permanent transmission (5s on parking mode and 1s when driving > 20km/h). The Paddock survey or LCD display will display data as soon as it receives the desired frame.
FORCE BUTTON :
Enable you to learn ID on display by sending an LF request to the sensor
OFF BUTTON : LF Sleep
Push OFF button (more than 20 sec) to switch off (no RF transmission) your WUS. At this time, the pressure and temperature information will not be available on the paddock survey or LCD display after more than 20 seconds.
©©September, 2007 Copyright LDL TechnologyAll rights reserved
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2. Start trig the first wheel
1. Start the trig procedure of the four wheel unitsSensor to switch to 5s transmission mode
3. Forced RF PeriodicTransmission (every 5s)of the first wheel unit sensor
4. Repeat the operation untilall wheels are trigged
5. WUS are wake upP & T°°°° information available
6. To force on sleep mode,repeat the operation
7. TW system fully asleep
LF Trigger : Step descriptionLF Trigger : Step description To use the trigger on the best way, place yourself the nearest you can to the wheel unit sensor in line with the external side of the rim. Then push during 20 seconds on ON or OFF button without slackening.
