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Automotive telemetry system designed at Coventry University

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Abstract

Published in The ITS UK Annual Review Magazine, January 2015.
ITS REVIEW
28 January 2015
Automotive Telemetry System
designed at Coventry University
Arst 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 transmiers which
can work in the same time on
dierent cars during the cars racing
competition on the same racing track.
Additionally, this type of a transmier
provides the high security of the
data-communication due to the fact
that both devices (a transmier 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
transmied 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 trac 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
transmier 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
transmier, 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
transmied via the CAN-bus, which
is specically implemented for this
system in order to reduce numbers of
connection wires.
e data is then transmied via the
GSM/GPRS modem to the mobile-
phone network. e special data-
server has been designed in order to
collect the transmied 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 dierent driving
conditions (such for example, as – due
to the dierent road trac conditions
or driving in dierent environmental
conditions), the long driving time, or
the driver behaviour under dierent
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
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