3. Overview
Statement of need
Design goals
System structure
Design components
Architecture
Overview of code
Control software
Future scope
4. •Mobile command system is the heart of the BrahMos
missile system .
•The MCP controls four missile launchers and has the
capability to attach two more launchers incase the
situation warrants.
• There is a communication server provided to manage
different types of communication media .
•There is a communication rack consisting of TMS unit
as its subsystem.
5. .
Temperature monitoring system is designed to
collect the temperature data from eight different
equipments positioned at different sites and send
it to a single redundant host system consisting of
main and standby systems, thereby providing an
interface between external devices.
6. Can be used in an area where wide variety of
equipments have to be connected to a single
monitoring unit.
Different message formats and protocols of
equipments can be converted into a unified message
format using a single system.
Equipments with different baud rates can also be
handled (from a baud rate of 9600 to 57600 bps).
It has a host-end redundancy technique for doubling
the equipments from 8 ports to 16 ports.
7.
8. Host system
This consists of mainly 2 systems, the main system
and the stand by system.
This is the interface unit, called the Temperature
Monitoring System, in short TMS unit. It receives the
temperature information available in various formats
and protocols periodically, from different systems
(temperature channels) like Rugged VME chassis,
Rugged Flat-Panel Monitor and Routers.Equipments
are observed here.
9. The equipments are the different type of systems
which consists of sensor
There can be variety of equipments like RUGGED
routers,Barco monitors, work station(VME
Enclosure), etc.,
10. An interesting thing is that our TMS unit can handle
equipments of different codes of behavior. That is it
can take temperature information from these
equipments which may be of a variety of formats into
a single accordance which is known by the host
system that is agreed previously before hand.
12. FEATURES
• 8-bit Micro-controller
• ROM OF 8K(Flash)
• Internal RAM of 256 byte
•Thirty – two input /out put pins arranged
• Four 8 bits ports: P0 – P3
•Three 16 – bits timer/counters: T0, T1 and T2
•Full duplex serial port
On chip oscillator
13. Dual Universal Asynchronous Receiver/Transmitter
(DUART) is a single-chip MOS-LSI communication
device that provides two independent full-duplex
asynchronous receiver/transmitter channels in a
single package
Features
Dual full-duplex asynchronous receiver/transmitter.
Quadruple buffered receiver data registers.
Programmable data format.
– 5 to 8 data bits plus parity.
14. Programmable baud rate for each receiver and
transmitter selectable from
16-bit programmable Counter/Timer
-External 1X or 16X clock.
15. Erasable Programmable Read Only Memory
(EPROM) is an ultraviolet erasable read only
memory .
Serial port connection
RS232 is a common interface standard for
data communications equipment and
is needed to ensure reliable communication and
to enable the interconnection of equipment produced by
16. Decoder
The 74LS139 Decoder is used in TMS
designed to be used in memory decoding or data-routing
applications,
Have very short propagation delay times
17. Latch
The 8-bit registers feature 3-state outputs designed
specifically ,
for driving highly capacitive or relatively low-impedance loads
.
54LS373 latch is used in this
project to latch the higher order
address bytes from the
multiplexed address/data bus of
microcontroller.
18. Optical Isolators are incorporated for all the nine
serial ports in the design of TMS unit. It provides
optical connectivity for data transfer but at the same
time it provides electrical isolation between the
various RS-232 equipments and the host.
19. • Rugged, Reliable, Compact & PresentableHalts
and restarts an out-of-control microcontroller.
• Holds microcontroller in check during power
transients.
• Automatically restarts microcontroller after power
failure
• Monitors Push button for external; override.
• Accurate 5% or 10% microcontroller power
supply monitoring
21. Working Principle
Equipments whose temperature is to be monitored are
connected to the TMS unit.
Equipment is linked to the TMS unit at DUART’s
section. DUART
section consists of 4 DUART’s, as each DUART can
handle two equipments thus giving provision to connect
8 equipments.
The heart of the TMSC board is the microcontroller
89C52, as it plays the vital role of controlling all the
operations inside the board.
The data collected at the DUART’s may be of different
formats, which is converted by the microcontroller into a
particular format understood
22. Level converters are used to convert the standard RS-232
port levels of the serial ports to TTL. An EPROM and two
RAM’s are interfaced external to the microcontroller for
future use when expansion is required,
The XTAL1 and XTAL2 are used to generate clock pulses by
which all internal operations are synchronized .The crystal
frequency used here is 11.0592MHZ for micro controller and
3.6864MHz for DUART
TMS indicator glows in red/blue/yellow indicating the internal operation of the TMS unit as indicated below
1.Glows in red color while collecting temperature data from equipment.
2.Glows in green color while sending the temperature information to the host.
3.Glows in yellow color while doing internal operations.
23. Full-featured source code editor,
Device database for configuring the development tool
setting,
Project manager for creating and maintaining your
projects,
Integrated make facility for assembling, compiling, and
linking your embedded applications,
Dialogs for all development tool settings,
True integrated source-level Debugger with high-speed
CPU and peripheral simulator,
Advanced GDI interface for software debugging in the
target hardware and for connection to monitor-51.
24. Call ‘Initializing’ function.
Repeat the following steps continuously for ever.
Check for system receive flag.
If it is true, call system response function.
If command is ready go for ‘Restart’ function.
Read ‘Router’ function.
Call ‘System’ function
25. Future Scope
The future upgrade is to tie this system into the
master fiber-optic wide area network when the
network goes into service and to provide a link to the
Programmable Master Supervisory Control (PMSC)
system when delivered. Measurements can be made
remotely up to several kilometers via FO cable.
The PC monitor will be able to preserve the received
immediate message. Then, it extracts and analyzes
the historical data to provide a scientific basis for
control strategy.
