Continental Automotive 5WY7635 Tire Pressure Unit User Manual Manual
Continental Automotive GmbH Tire Pressure Unit Manual
Manual
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| Document ID | 533387 |
| Application ID | Fn6JsihfDyEdvzh+LGWWFA== |
| Document Description | Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 3.96kB (49502 bits) |
| Date Submitted | 2005-04-18 00:00:00 |
| Date Available | 2005-04-18 00:00:00 |
| Creation Date | 2005-04-13 09:43:46 |
| Producing Software | Acrobat Distiller 7.0 (Windows) |
| Document Lastmod | 2005-04-13 09:45:28 |
| Document Title | Microsoft Word - Annex No 5 Key; 5WY7635_Technical description, User Manual… |
| Document Creator | PScript5.dll Version 5.2 |
| Document Author: | Manfried Dudde |
Annex No.5 Technical Description Users Manual 5WY7635 SIEMENS VDO Automotive SV C BC P2 RF IC:267T-5WY7635 FCC ID:KR55WY7635 User Manual / Functional Description of the Siemens VDO Tire Pressure Generation TG1B-VL2 wheel unit Type 5WY7635 I:\POSTZULA\Tpms_TG\TG1B-VL2\Technische_Dokumente\functionnal description_5WY7635.doc 1 of 4 SIEMENS VDO Automotive SV C BC P2 RF IC:267T-5WY7635 1.1. FCC ID:KR55WY7635 SYSTEM OVERVIEW The TG1B-VL2 is a pressure sensor for Tire Pressure Monitoring System (TPMS) application. By several measurements and RF transmission, the driver is informed about the air pressure in his vehicle wheels. The following is a list of the wheel unit (WU) functions: • Pressure measurement • Temperature measurement • Motion measurement (centrifugal acceleration) • Battery status • Radio frequency RF emission • Low Frequency LF reception The system is made of an embedded WU that measures some parameters inside the tire and transmits them by RF at 315 MHz to a central unit (TGR) in the vehicle. In some cases, the TGR can trigger a RF emission from the WU by LF signal. Wheel1 WU1 Aerial 315 Mhz MHz TGR Aerial LF Wheel2 WU2 Wheel3 WU3 Wheel4 WU4 LF triggering is made by some specific LF drivers and antennas. RF reception is made by one antenna linked to the TGR. LF triggering is only used in case of axle localization. The WU is mounted inside the wheels, fixed to the rim, which is also a part of the System. I:\POSTZULA\Tpms_TG\TG1B-VL2\Technische_Dokumente\functionnal description_5WY7635.doc 2 of 4 SIEMENS VDO Automotive SV C BC P2 RF IC:267T-5WY7635 FCC ID:KR55WY7635 Tire Rim WU It is made of a PCB that supports the electronic hardware encapsulated inside a box and polyurethane foam. It is self-powered by a battery and includes all systems for measurements (pressure, temperature, centrifugal acceleration, and battery status), RF emission and LF reception. Theory of Operation The sensor function is to provide to the receiver by RF frames the state of pressure of the air in each one of the four tires of the car. The information given in the RF frame indicates exactly the state of the car (rotating wheel or not) and the state of the pressure in the tires. At any time, the sensor must be able to detect some changes of the wheel behavior. When the motion indicator is activated, the sensor enters the rotating mode. When the motion indicator is deactivated, the sensor enters the interim mode for maximum half an hour. During this period, the vehicle car return in rotating mode if it restarts before the end of the 30 minutes stopped period or after 30 minutes time in interim mode, the sensor goes automatically in stationary mode until it restarts and goes in rotating mode. I:\POSTZULA\Tpms_TG\TG1B-VL2\Technische_Dokumente\functionnal description_5WY7635.doc 3 of 4 SIEMENS VDO Automotive SV C BC P2 RF IC:267T-5WY7635 FCC ID:KR55WY7635 1.2. BLOCK DIAGRAM The block diagram below shows the main electronic units of the wheel unit: Pressure, temperature, acceleration, Sensor and µcontroller LF receiver RF emitter Lithium battery CR2450 1.3. VARIANTS Siemens type designation 5WY7635 Remarks Transmitter 315 MHz 1.4. TYPICAL USAGE PATTERN One burst of 4 frames of 10.41ms per minute => in one hour =4*0.0104*60=2.5 seconds of transmission duration. Transmitter ON 2.5 seconds / hour Transmitter OFF 3597.5 seconds / hour Duty Cycle: TON / T (ON+OFF) x 100% = 2.5 / 3600 x 100 % = 0.069 % I:\POSTZULA\Tpms_TG\TG1B-VL2\Technische_Dokumente\functionnal description_5WY7635.doc 4 of 4 SIEMENS VDO Automotive SV C BC P2 RF IC:267T-5WY7635 FCC ID:KR55WY7635 1.5. TECHNICAL DESCRIPTION VARIANT 5WY7635 Carrier Frequency Field strength Frequency shift Number of channel : Type of modulation : Antenna Voltage supply Voltage supply range : 315 MHz < 87 dBµV/m @ 3m (CW mode) ± 35 kHz target value (± 30 kHz min to ± 50 kHz max) FSK-ASK Integral 1 lithium battery 3V (CR2450) 2.1 up to 3.2 V 1.6. LABEL DESIGN CANADA, USA, MEXICO Siemens VDO 5WY7635 FCC ID:KR55WY7635 IC:267T-5WY7635 owner manual: warning statement This device complies with part 15 of the FCC Rules and RSS-210. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept interference received, including interference that may cause undesired operation. Note: Changes or modifications not expressly approved by the manufacturer could void the user's authority to operate the equipment. I:\POSTZULA\Tpms_TG\TG1B-VL2\Technische_Dokumente\functionnal description_5WY7635.doc 5 of 4
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