Huf Baolong Electronics Bretten TSS-DA4 Receiver of a Tire Pressure Monitoring System User Manual Titel

Huf Electronics Bretten GmbH Receiver of a Tire Pressure Monitoring System Titel

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Date Submitted2004-07-16 00:00:00
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TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
Abt. BEE
Dokument-Nr.:
Document no.:
3530 27 004 002
Änderungsstand:
Revision status:
Index:
Index:
00
freigegeben am /Date of release 15.04.03
Titel:
Bedienungsanleitung TSS-System Generation 1.5
Title:
User Manual TSS-System Generation 1.5
Dokument Nr.: 3530 27 004 002 00
Document no:
Projekt:
TSS-System Generation 1.5
Project:
Tire Safety System TSS system generation 1.5
Revision status:
Index:
Index:
Änd.stand:
Revision status
Beschreibung:
Description
Erstellt / Datum:
Created / Date:
Geprüft / Datum:
Checked / Date:
Freigegeben /
Datum:
Released / Date:
00
Revision
Saric/
03.04.03
Kühnle/
09.04.03
Kessler/
15.04.03
Geprüft / Datum:
Checked / Date:
Freigegeben /
Datum:
Released / Date:
Revision schedule:
Index:
Index:
Änd.stand:
Revision status
Beschreibung:
Description
Erstellt / Datum:
Created / Date:
00
Initial version
Kessler/
20.02.03
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
Abt. BEE
Dokument-Nr.:
Document no.:
3530 27 004 002
Änderungsstand:
Revision status:
00
Index:
Index:
freigegeben am /Date of release 15.04.03
SYSTEM AND FUNCTION DESCRIPTION ......................................................................................................3
1.1
SYSTEM DESCRIPTION .................................................................................................................................................4
FUNCTION DESCRIPTION .................................................................................................................................6
SYSTEM COMPONENTS .....................................................................................................................................8
3.1
CONTROL UNIT ...........................................................................................................................................................8
3.1.1
Temperature range ............................................................................................................................................8
3.1.2
Voltage range.....................................................................................................................................................8
3.1.3
Terminal assignment..........................................................................................................................................9
3.1.4
CAN bus interface ..............................................................................................................................................9
3.1.5
CAN interface data ............................................................................................................................................9
3.2
WHEEL ELECTRONICS ...............................................................................................................................................10
3.2.1
Fit space...........................................................................................................................................................10
3.2.2
Versions ...........................................................................................................................................................10
3.2.3
Temperature ranges .........................................................................................................................................10
3.2.4
Power supply....................................................................................................................................................10
3.2.5
Pressure measurement .....................................................................................................................................10
3.2.6
Temperature measurement...............................................................................................................................10
3.2.7
Battery monitoring ...........................................................................................................................................10
3.2.8
Transmission rate ............................................................................................................................................10
3.2.9
Block diagram..................................................................................................................................................11
3.3
ANTENNA .................................................................................................................................................................12
3.3.1
General dimensions and data ..........................................................................................................................12
3.3.2
433 MHz digital antenna .................................................................................................................................12
3.3.3
315 MHz digital antenna .................................................................................................................................12
3.3.4
Power supply....................................................................................................................................................12
3.3.5
LIN communication with TSS control unit.......................................................................................................12
3.3.6
Terminal assignment, socket connector ...........................................................................................................12
3.3.7
Block diagram..................................................................................................................................................13
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
Abt. BEE
Dokument-Nr.:
Document no.:
3530 27 004 002
Änderungsstand:
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Index:
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freigegeben am /Date of release 15.04.03
1 System and function 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 changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
1.1
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System description
The Tire Safety System (TSS) controls and monitors tire pressures.
The system comprises the following components:
• 1 TSS control unit
• 4 TSS wheel electronics units including valve
• 4 TSS digital antennas
The basic function of the system is to monitor tire pressure during driving.
An electronic unit fitted inside the tire measures the tire pressure and the temperature at
regular intervals and transmits the data telemetrically via a HF link to a reception antenna
fitted in the wheel housing. In the reception antenna the radio data telegram is decoded and
forwarded as a digital signal to the electronic control unit. The control unit evaluates the
received data and passes on the information as necessary to the driver, who is then made
aware of the need to adjust tire pressures or of a possible puncture situation.
Benefits of the Tire Safety System:
•
Safety
An early warning of rapid pressure loss is given.
Tire blowouts, resulting from excessive flexing energy caused by driving too fast at low
pressures, are avoided.
The driver is prompted to adjust the tire pressure as necessary.
•
Convenience
Checking of tires is simplified. It is only necessary to remove valve caps and use filling
station air dispensers when an adjustment of tire pressure is actually required.
•
Tire innovations
Tires with flat-running capabilities mean it is no longer necessary to change a wheel
immediately and make the spare wheel superfluous, but they do demand continuous
monitoring of tire pressure.
•
Durability and economy:
Tire wear is minimized because correct air pressure is maintained.
The system's major additional function is its automatic facility to learn the wheels belonging to
the vehicle in question (vehicle wheel identification) and the fitting positions of the vehicle
wheels (wheel position detection).
During normal driving this enables the system to match the wheels to the appropriate wheel
positions and set the correct pressures without involving the driver.
Optional additional functions cover tire pressure monitoring at standstill:
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
•
Flat tire alert before driving off
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TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
Abt. BEE
Dokument-Nr.:
Document no.:
3530 27 004 002
Änderungsstand:
Revision status:
00
Index:
Index:
freigegeben am /Date of release 15.04.03
2 Function description
The wheel electronics units are fitted inside the tires and measure the tire pressure and the
temperature of the wheel electronics. A transmitter in the wheel electronics transmits the
measured data from the wheel. For tire pressure monitoring a system with relatively
infrequent data transfer is adequate, provided it also has the facility to detect rapid pressure
loss. Consequently, the electronics in the wheel can be designed for minimal power
consumption and be battery operated.
Each wheel electronics unit has its own ID which is transmitted along with every data
transfer. The HF transmission is executed in the 433 MHz range, the so-called ISM band, or
in some countries in the 315 MHz range.
Each wheel electronics unit transmits data every 54 seconds. It also measures the tire
pressure and the wheel electronics temperature every 3 seconds. In the event of a pressure
loss of > 0.2 bar relative to the last pressure value transmitted, the wheel electronics
immediately switches to a fast-transmit mode, measuring and transmitting the data every 0.8
seconds.
This means the TSS measures and transmits a considerably greater volume of data than is
essential to ensure basic functioning. Consequently, it is able to utilize a data transmission
path which does not rely on error-free transfer of each individual data protocol. The data are
transferred from the wheel to the vehicle by unidirectional HF transmission. In this mode of
HF transmission data telegrams may be subject to disturbance from random external
interference sources or from statistical fluctuations in the reception amplitude resulting from
varying reception conditions in the wheel housing in respect of wheel rotation and position.
The data transmitted by the wheel electronics are received and decoded by the antennas
mounted in the vicinity of the wheel. The decoded data are transmitted via a digital interface
(LIN interface) to the control unit.
The control unit evaluates the received data and passes the information as required to the
driver information system, so making the driver aware of the need to adjust tire pressures or
of a possible puncture situation.
A central warning algorithm and wheel management algorithm
The vehicle-specific onboard power system interface and manufacturer-specific operator
control and display philosophy
The system's major additional function is its automatic facility to learn the wheels belonging to
the vehicle in question (vehicle wheel identification) and the fitting positions of the vehicle
wheels (wheel position detection).
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
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During normal driving this enables the system to match the wheels to the appropriate wheel
positions and set the correct pressures without involving the driver.
Optional additional functions cover tire pressure monitoring at standstill:
•
Flat tire alert before driving off
TSS-LIN-Bus
CAN bus
To driver
information system
TSS control
unit
CAN
interface
TSS-LIN
interface
Antenna 1
A 2
A 3
A 4
TSS-LIN
interface
HF
receiver
Function
software
Function
software
Wheel elec.
RE 2
Figure 1 - Block diagram, TSS system generation 1.5
RE 3
RE 4
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
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3 System components
The components of the TSS are presented in the following.
3.1
Control unit
The electronic control unit comprises a circuit board with a microprocessor control, a CAN
bus interface and a TSS-LIN bus interface.
The control unit captures and evaluates the tire information received from the digital
antennas. The pressure data, and warnings as and when required, are transmitted over the
CAN bus to the vehicle's display systems.
The data from the digital antennas are transmitted via a LIN communication link to the control
unit. The control unit is the LIN master, while the antennas operate as slaves. The following
sections set out the key data of the control unit.
3.1.1
Temperature range
Operating temperature:
Storage temperature:
3.1.2
-40°C ... +80°C
-40°C ... 120°C
Voltage range
Terminal 30, rated voltage:
Terminal 30, operating voltage:
Terminal 30, maximum voltage:
Voltage overload shutdown:
Low voltage shutdown:
12V
9V ... 16V
0... +27V, with inverse-polarity protection
Control unit shutdown at UB > 27V
Control unit shutdown at UB < 6V
Number of suppliable digital antennas: 5
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
3.1.3
3530 27 004 002
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Pin trough with 90° angled solderable pins
32 pins
Terminal 31 Gnd
Terminal 30 Battery positive 12V
------------------------------------------------------------------LIN GND RR
LIN_DATA_RR
LIN_DATA_HR
----------------------------------
10
11
12
13
14
15
16
LIN_DATA_HL
LIN_DATA_VR
LIN_GND_VL
LIN_DATA_VL
------------------------------------------------------------------CAN bus 1, high
CAN bus Gnd (= terminal 31)
17
18
19
20
21
22
23
----------------------------------------------------------------------------------------------------------------------------------------------------------------LIN_V1_RR
LIN_V1_HR
24
25
26
27
28
29
30
31
32
LIN_GND_HL
LIN_V1_HL
LIN_V1_VR
LIN_GND_VL
LIN_V1_VL
----------------------------------------------------------------CAN bus 2, low
---------------------------------
CAN bus interface
Bus:
Convenience CAN system
CAN specification:
CAN Low Speed Class B ISO DIS 11519
Communication partners: All systems on the convenience CAN,
particularly instrument cluster and CAN/CAN gateway
3.1.5
Index:
Index:
freigegeben am /Date of release 15.04.03
Terminal assignment
Design:
Number of contact pins:
3.1.4
Abt. BEE
Dokument-Nr.:
Document no.:
CAN interface data
Driver block:
Can H / Can L wire:
TJA1054
Short-proof against GND and +UB
CAN bit rate:
100 kBaud +/-5%
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
3.2
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Wheel electronics
The wheel electronics unit registers the tire pressure and the air temperature in the tire and
transmits it over a predefined radio link together with the remaining battery life and the ID to
the adjacent digital antenna.
3.2.1
Fit space
The wheel electronics unit is fitted together with a valve
on the wheel rim, and sits in the well base.
The BERU fitting instructions must be followed.
3.2.2
Versions
Because of the differing country-specific approval conditions for radio-assisted electronic
systems, based on local circumstances such as operation of military radio communications,
private mobile radio systems etc., different variants of the wheel electronics units transmitting
on different carrier frequencies are required.
433 MHz wheel electronics unit
315 MHz wheel electronics unit
3.2.3
Temperature ranges
Operating temperature:
3.2.4
Power supply
Battery life, averaged:
3.2.5
0 to 6.375 bar, absolute
Temperature measurement
Measuring range:
3.2.7
7 years
Pressure measurement
Measuring range:
3.2.6
-40°C ... +120°C
- 40°C to + 120°C
Battery monitoring
At the end of each transmission the remaining battery life is measured.
3.2.8
Transmission rate
9.6 k bps +/- 10%
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
3.2.9
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Block diagram
The adjacent diagram shows the basic electrical structure of
the wheel electronics.
For measurement of the absolute pressure a relatively low frequency of measurement data
transmissions is sufficient, but a pressure loss must be transmitted immediately. The wheel
electronics unit adjusts automatically to the various operating modes in order to carry out these
functions at minimum power consumption.
Transmitting intervals
1. Normally each wheel electronics unit measures the tire pressure and the approximate temperature
of the air in the tire every three seconds, but if the measured values are stable transmissions are
executed only every 54 seconds.
2. At a pressure loss of more than 0.2 bar per minute, the wheel electronics unit switches temporarily
to an alarm mode at a high transmission frequency.
It then measures and transmits data every 0.8 seconds. This power management system permits
battery-powered operation with adequate durability.
Safety instructions for battery:
Dispose of used batteries in accordance with local legislation.
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
3.3
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Antenna
The digital antenna has a built-in signal processor (decoding processor) to receive and
decode the HF signals transmitted by the wheel electronics. The processed information is
transmitted via a LIN communication link to the TSS control unit.
3.3.1
General dimensions and data
Receiver bandwidth:
550kHz @ -85dBm / 20°C
Modulation type:
FSK, hard keyed
Radio data rate:
9.6 kBaud +/- 10%
3.3.2
433 MHz digital antenna
Radio reception frequency:
3.3.3
315 MHz digital antenna
Radio reception frequency:
3.3.4
315.00 MHz +250kHz / - 250 kHz
Power supply
Supply cable:
Supply voltage:
3.3.5
433.92 MHz +250kHz / - 250 kHz
Two-wire cable, Ubatt , Gnd
for each digital antenna
> (Ubatt – 2V)
LIN communication with TSS control unit
The LIN communication of the antennas with the TSS control unit conforms to the LIN
Consortium specification, version 1.1. The TSS control unit operates in master mode and the
antennas in slave mode.
Key data:
LIN bit rate:
LIN driver:
3.3.6
10 kBaud +/-2%
Philips TJA 1020
Terminal assignment, socket connector
Design:
Number of contact pins:
Pin design:
Pitch:
Pin trough
4 pins
Sealed, gold-plated
2.54 x 2.54 mm
TSS-System Generation 1.5
Tire Safety System TSS system generation 1.5
Bedienungsanleitung TSS-System
Generation 1.5
User Manual TSS-System Generation 1.5
Pin:
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Signal:
LIN_GND
LIN_V1_XX
LIN_DATA_XX
LIN_GND
00
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Description:
Signal reference
LIN supply voltage
LIN data line
Signal reference
XX: Wheel position: Reference to control unit pin assignment
3.3.7
Index:
Index:
Block diagram
The diagram below shows the basic electrical structure of the antenna electronics.

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