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ITS REVIEW
28 January 2015
Automotive Telemetry System
designed at Coventry University
Arst version of a telemetry
system, designed by students,
comprises 18 sensors and a
GPS receiver. e short range
communication between a car and a
base-station has been implemented
using a radio modem which transmits
the data using the spread-spectrum
modulation method (also known as
the equency-hopping method). is
allows one to avoid the interference
between several transmiers which
can work in the same time on
dierent cars during the cars racing
competition on the same racing track.
Additionally, this type of a transmier
provides the high security of the
data-communication due to the fact
that both devices (a transmier on a
car and a receiver on a base-station)
are automatically synchronised on the
same equency and in the same time.
us, it is not possible to decode the
transmied information by people
om other cars racing teams, rather
than by people who are operating
these particular devices in this
particular team.
e telemetry system includes a
GPS receiver and integrated INS.
is system’s integration allows
one to continuously monitor the
vehicle’s position even in the case
when a signal om the GPS receiver
disappears. It is well known fact that
the signal om GPS satellites may
not penetrate concrete structures
(buildings in the City and tunnels),
thus the information about a car’s
position may not be determined.
When such the situation happens,
then the INS (which is based on
a gyroscope and odometer) can
compensate the missing information
for the vehicle’s navigation.
Another version of the telemetry
system is based on the GSM/GPRS
modem which allows one to transmit
the information om vehicle’s sensors
via the mobile-phone network.
us, these data can be monitored
anywhere in the world and anytime.
e complete telemetry system, based
on the GSM/GPRS modem, consists of
four nodes:
Node-1 (the pedal and steering wheel
position monitoring);
Node-2 (the water/oil temperature
and pressure monitoring, ont
At Coventry University in the
Department of Mechanical
and Automotive Engineering
I have designed and taught
new modules: “Intelligent
Transport Systems”
(om the year 2006) and
“Telematics” (om the year
2009) for the Automotive
Engineering course. In
order to supplement the
theoretical material with
practical exercises on these
modules, I developed several
practical courseworks,
such for example, as:
modelling and simulation
of road trac networks
in Coventry City using
experimental data; design
of an autonomous vehicle; a
telemetry system based on
the Controller Area Network
(CAN-bus); design of an
automotive cluster for the
monitoring of parameters
om vehicle’s sensors on a
car’s dash-board; design of
an automotive telematics
system for the monitoring of
vehicle’s parameters in the
real-time using the data-
acquisition hardware and
GPS receiver; and design of
the telemetry system based
on a short-range radio
transmier and receiver.
Also, students did nal year
projects on the above topics
under my supervision.
In this article I would
like to emphasise on some
of the above projects,
i.e. automotive telemetry
system design based on
the CAN-bus, GPS receiver,
INS (Inertial Navigation
System), wireless data
communication based
on a short range radio
transmier, and a telemetry
system based on the GPRS
modem via the mobile-
phone network.
Yuri A. Vershinin
Senior Lecturer
in Automotive
Electronics,
Intelligent
Transport
Systems and
Telematics
Applied
Research
Group,
Coventry
University
A car with a
wireless telemetry
system on the
Bruntingthorpe
Proving Ground
www.its-ukreview.org 29
suspension position, lambda sensor,
and exhaust fumes temperature);
Node-3 (a GPS receiver);
Node-4 (the rear suspension position
monitoring and a GSM/GPRS modem).
e information between nodes is
transmied via the CAN-bus, which
is specically implemented for this
system in order to reduce numbers of
connection wires.
e data is then transmied via the
GSM/GPRS modem to the mobile-
phone network. e special data-
server has been designed in order to
collect the transmied data. ese
data can be extracted om the server
and provided in the form of graphs on
the computer display for a required
period of time for the post-processing
data analysis.
Another system has been designed
for the monitoring of a driver’s ECG.
e system can be used to assess the
driver performance in dierent driving
conditions (such for example, as – due
to the dierent road trac conditions
or driving in dierent environmental
conditions), the long driving time, or
the driver behaviour under dierent
medical conditions. ◆
Preparation
of a wireless
telemetry system
on a racing car
e Graphic
User Interface
on a computer
monitor
e display for
car’s parameters
om a data-base