Huf Baolong Electronics Bretten TSS-RE3T Tire Pressure Monitoring System User Manual
Huf Electronics Bretten GmbH Tire Pressure Monitoring System
Users Manual
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
Status of
modification:
Index:
Index:
3530 27 004
003 00 c
Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
Titel: Bedienungsanleitung TSS 2. Generation, “AUDI B6 / C6”
Title: User Manual 2nd Generation “TSS AUDI B6 / C6”
Dokument Nr.: 3530 27 004 003 00
Document no:
Projekt: TSS 2. Generation, “AUDI B6 / C6”
Project: Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6”
Current status:
Index:
Index:
Änd.stand:
Status of
modification:
Beschreibung:
Description
Erstellt / Datum:
Prepared / date:
Geprüft / Datum:
Checked / date:
Freigegeben /
Datum:
Released / date:
c 00 Maintenance of WE transmitting
power according to FCC
Saric/
11.05.04
Köninger/
11.05.04
Denzler/
11.05.04
Revision service
Index:
Index:
Änd.stand:
Status of
modification:
Beschreibung:
Description
Erstellt / Datum:
Prepared / date:
Geprüft / Datum:
Checked / date:
Freigegeben /
Datum:
Released / date:
b 00
Maintenance of WE transmitting
power according to FCC
Saric/
11.05.04
Köninger/
11.05.04
Denzler/
11.05.04
a 00 First version Köninger/
07.05.04
Birringer/
10.05.04
Denzler/
10.05.04
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
Status of
modification:
Index:
Index:
3530 27 004
003 00 c
Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
Contents:
1 SYSTEM AND FUNCTIONAL DESCRIPTION.................................................................................................3
1.1 SYSTEM DESCRIPTION ................................................................................................................................................ 4
2 FUNCTIONAL DESCRIPTION............................................................................................................................6
3 WARNING ALGORITHM.....................................................................................................................................9
List of Figures:
Figure 1: Modular mimic display, 2nd Generation TSS System B6/ C6 LowLine ................................................ 7
Figure 2: Modular mimic display, 2nd Generation TSS System C6 HighLine ...................................................... 8
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
Status of
modification:
Index:
Index:
3530 27 004
003 00 c
Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
1 System and Functional Description
Section 15.19: Labeling requirements
This device complies with Part15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired
operation.
Section 15.21: Information to the user
The user manual or instruction manual for an intentional or unintentional radiator shall caution
the user that makes changes or modifications not expressly approved by the party responsible for compliance
could void the user’s authority to operate the equipment.
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
Status of
modification:
Index:
Index:
3530 27 004
003 00 c
Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
1.1 System Description
The Tire Safety System (TSS) controls and monitors tire pressures.
The system comprises the following components:
B6 System:
• 1 TSS control unit
• 4 sets of wheel electronics including valve
• 1 digital antenna
C6 System, Low Line variant: C6 System, High Line variant:
• 1 TSS control unit 1 TSS control unit
• 4 sets of wheel electronics including valve 4 sets of wheel electronics
including valve
• 1 digital antenna 1 digital antenna
4 trigger transmitters
The system's primary function is to monitor tire pressure during travel.
An electronic mechanism mounted inside the tire measures tire pressure and temperature at
regular intervals and transfers the values telemetrically via a HF transmission line to a
reception antenna. In the receiver antenna, the radio data telegram is decoded and
transferred to the control unit as a digital signal. The control unit evaluates the received data
and forwards the information to the driver as required. This provides the driver with
information on the necessary tire pressure or tire tension adjustments.
The C6 High Line System also offers a bi-directional communication with the wheel
electronics (trigger function).
The benefits offered by the tire pressure control system are:
• Safety
An early warning signal is triggered on sudden pressure loss.
“Blow-outs” caused by excessive flexing and then driving on inadequate tire pressure
are avoided.
The driver is prompted to adjust the tire pressure where necessary.
• Comfort
Tire handing is made simple. Using filling equipment at the fuel station and removing
the valve cap is necessary only for correcting the tire pressure.
• New tire developments
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
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modification:
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3530 27 004
003 00 c
Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
Tires with limp-home features avoid having to change a wheel immediately and render
the spare wheel superfluous. They do, however, require permanent monitoring of the
tire pressure.
• Service life and economy
Tire wear is minimized through correct air pressure.
The essential additional function is the self-learning system enabling the vehicle to detect
individual wheels (individual wheel detection). The C6 High Line System also detects the
installed position of the individual wheels (wheel position detection).
This enables the system, during normal driving operation, to clearly assign the wheels to the
wheel position and set the required reference pressures without operator intervention.
Optional additional functions relate to tire pressure monitoring when stood still:
• early warning of bursts prior to setting off (C6 HighLine System only)
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
Status of
modification:
Index:
Index:
3530 27 004
003 00 c
Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
2 Functional description
The wheel electronics are mounted within the tires and measure tire pressure, temperature
and wheel electronics. The measured data is sent from the wheel via a send stage in the
wheel electronics. A system with relatively seldom measured data transfer is adequate for tire
pressure monitoring provided it features the additional option of detecting sudden pressure
loss. This enables the electronics in the wheel to be designed for minimum power draw and
battery operation.
All wheel electronics have their own code (ID) that is forwarded with the data at each
transfer. The HF transfer occurs in the 433 MHz range, referred to as the ISM range and/or in
some countries in the 315 MHz range. The trigger functionality of the C6 High Line System is
achieved by a 125kHz LF channel.
All wheel electronics send measured values every 30 seconds if it detects a radial
acceleration > 11 g (vehicle moving). The wheel electronics send no data when the vehicle is
stood. With the C6 High Line system, the wheel electronics are called-up for sending data
messages by the control unit via the trigger sender every 54 s. Tire pressure and wheel
electronics temperature are also measured every 3 seconds. When a pressure loss 0.2 bar
on the last send pressure value is detected, the wheel electronics switch immediately to fast-
send mode. In this situation, the wheel electronics measure and send every 0.8.
The TSS measures and transfers considerably more data than is necessary to ensure
reliable basic function. It can therefore use a data transfer path that is not assigned for the
error-free transfer of each individual data protocol. The B6 and C6 LowLine systems send
measured data from wheel to vehicle using a unidirectional HF transfer. During this HF
transfer, data messages can be destroyed by incidental, external interference sources or
through statistical fluctuations of the receive amplitude due to varying receive relationships in
the wheelhouse for wheel rotation and wheel position. The C6 High Line system employs the
trigger functionality and requests again an implausible and/or non-received data message
from the corresponding wheel electronics.
The data sent by the wheel electronics are received via the digital antenna and decoded. The
decoded data are transferred onwards to the control unit via a digital interface (LIN interface).
In the B6, the antenna is installed in the rear bumper, in the C6, in the roofliner.
The control unit evaluates the received data and forwards the information to the driver
information system as required. This provides the driver with information on the necessary
tire pressure or tire tension adjustments.
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
Status of
modification:
Index:
Index:
3530 27 004
003 00 c
Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
The main functional characteristics of the control unit are:
- A central warning algorithm and an algorithm for the wheel manager
- The vehicle-specific connection for the power supply system and manufacturer-specific
operation and
display philosophy
The essential feature of wheel management is the self-learning system with automatic
individual wheel detection. The HighLine system also detects the installed position of the
individual wheels (wheel position detection).
This enables the system, during normal driving operation, to clearly assign the wheels to the
wheel position and set the required reference pressures without operator intervention.
Thanks to fast triggering of the wheel electronics when T 15 is ON, the HighLine system
detects a flat tire well before the start of a journey.
Figure 1: Modular mimic display, 2nd Generation TSS System B6/ C6 LowLine
CAN-bus
For Driver
Information
System
CAN-
Interface
TSS-LIN-
Interface
Function
software
TSS-LIN-
Interface
Function
software
HF
receiver
TSS
control unit
TSS-LIN-bus
Antenna
WE 1
WE 2
WE 3
WE 4
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
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modification:
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3530 27 004
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Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
Figure 2: Modular mimic display, 2nd Generation TSS System C6 HighLine
CAN-bus
For Driver
Information
System
CAN-
Interface
TSS-LIN-
Interface
Function
software
TSS-LIN-
Interface
Function
software
HF
receiver
TSS
control unit
TSS-LIN bus
Antenna
WE 1
WE 2
WE 3
WE 4
Trigger 1
Trigger 2
Trigger 3
Trigger4
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
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3530 27 004
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Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
3 Warning algorithm
The reference pressures to be monitored can be notified to the system by 2 different
methods.
a) Reference pressure specified via tabulated value
b) Reference pressure specified by calibration
If reference pressures are specified via tabulated values, the reference pressures to be
monitored are placed in a table.
If reference pressures are specified via calibration, the driver instructs the system through a
calibration command to accept the actual measured pressure as the reference pressure
value (calibration can be started by pressing a key or selecting a menu item).
The value is accepted for a specific position once the positions of the wheels are detected
and confirmed. The defined reference pressure is verified by the system for plausibility of the
pressure values prior to acceptance (comparison by axle of reference pressures with
HighLine, minimum pressure).
The tire pressure changes only slowly during normal operation. A gradual pressure drop
through diffusion is typical. A sudden pressure loss occurs only in isolated cases.
Spontaneous blow-outs without previous history are extremely rare; in this case the driver will
notice the reaction of the vehicle before even the fastest monitoring system can trigger a
warning.
The calculation of the warning limits uses the isochoric relationship between pressure and
temperature and thus enables the same warning precision to be achieved over a wide
temperature range.
In the case of slow temperature changes, the temperature of the wheel electronics is
equivalent to the average air temperature of the tire. The temperature of the wheel
electronics can therefore be used to calculate the isochoric linears. In the case of sudden
temperature changes (e.g. due to heavy braking), the temperature of the wheel electronics is
higher than the average air temperature of the tires due to the improved thermal coupling at
the rim. This correlation is considered in the control unit and corrected.
The tire temperature is considered in the comparison between current tire pressure and
reference pressure (isochoric evaluation, see Annex 1). During calibration, the system uses
reference pressure and temperature to calculate valid reference values for the current tire
temperature. There are two distinct warnings to indicate low pressure:
TSS 2. Generation, “AUDI B6 / C6”
Tire Safety System TSS 2nd. Generation,”AUDI B6 / C6” Dept. BEE
Dokument Nr.:
Document no.:
Änderungsstand:
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3530 27 004
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Bedienungsanleitung TSS 2.
Generation, “AUDI B6 / C6
User Manual 2nd Generation “TSS AUDI B6 / C
6
freigegeben am /date of release 11.05.04
• “Reminder” or soft warning
The “Reminder” operating status indicates low tire pressure, where driving safety
remains guaranteed. At the next “ignition on”, the driver is requested to correct the
pressure at the earliest opportunity (soft warning, “Check tire pressure” message.
• “Breakdown” or hard warning
The “Breakdown” operating status indicates that driving safety is no longer guaranteed.
The driver is requested to stop and check the condition of the tires. It is the driver's
responsibility to decide whether to continue the journey to the next repair station at low
speed or carry out the repair there and then.
If the limit values are underrun, the control unit will send the corresponding signals to the
Driver Information System in dependence of the pressure deviation.