The digital data bus MILSTD 1553B was designed in early 1970's
to replace analog point to point wire bundles between electronic
instrumentations. The MILSTD 1553B has four main elements.
1. Bus controller
to manage information flow.
2. Remote terminals to interface one or more subsistence.
3. Bus monitor for data bus monitoring.
4. Data bus components. Including bus couplers, cabling, terminators
and connectors.
This is a
differential serial bus used in military and space equipments
comprised of multiple redundant bus connection and communicates
at one MBps. Bus has single active bus control and up to 31 remote
terminals. Data transfer contain up to 16 bit data word.
INTERFACE
DESCRIPTION
MILSTD 1553
is military standard that defines the electrical and protocol
characteristic for data bus. A data bus is used to provide a medium
for exchange of data between various systems. It is similar to
LAN in personal computers and office automation industry. A data
transmission medium which would allow all systems and subsistence
to share a common set of wires was needed. So MILSTD 1553 standard
redefines TDM as the transmission of data from several signal
sources through one communication system with different signal
samples staggered in time to form a composite pulse train.
HISTORY
In 1968 SAE
a technical body of military and industrial members estd a subcommittee
to define a serial data bus to meet the needs of military avionics
community under the project name A 2 - K. This subcommittee developed
first draft in 1970. In 1973 MILSTD 1553 was released through
F - 16 fighter plane.
Then MILSTD
1553 A was released in 1975 through air forces F 16 and army's
attack helicopter AH - 64 A Apache. 1553 B was released in 1978.
The SAE decided to freeze the standard to allow the component
manufacturers to develop real world 1553 products.
APPLICATIONS
Applied to
satellites as well as in space shuttles. Used in large transporters,
aerial refuelers and bombers, tactic fighters and helicopters.
It is even contained in missiles and may act as primary interface
between aircraft and missiles. Navy has applied this data bus
to surface and subsurface applications. Army has put 1553 in to
tanks.
Commercial
applications have applied standard to systems like manufacturing
production lines and BART (bay area rapid transport). UK has issued
standard 0018 P and NATO has published STANAG 3838 AVS both in
accordance to 1553 B. MILSTD 1760 A the air craft store interconnect
has 1553 B embedded in it.
