IEEE
P1451.6
Terms and Definitions
What
is IEEE 1451?
The IEEE 1451 is a growing family of standards responsible for
the development of Smart Sensors. IEEE 1451 involves developing
technology for a seamless connection between smart sensors and
networks. This technology is standardized by the Institute of
Electrical and Electronics Engineers (IEEE), a world-wide
professional non-profit organization with over 360,000 members.
Read
more about the IEEE 1451 working groups on the NIST IEEE 1451
website.
What
is IEEE P1451.6?
The Proposed IEEE 1451.6 Standard is a developing standard that combines IEEE 1451
and Intrinsically Safe (IS) technologies for a CANopen
network.
Review
the IEEE 1451.6 model here.
TEDS:
A Transducer Electronic Datasheet (TEDS) is a table of parameters
that identify a transducer on a EEprom interrogation by external
electronics. IEEE 1451.4 defines the TEDS contained on a sensor.
Intrinsically
Safe: IS, is a condition of safety in a hazardous
environment, such as in areas where explosive gasses or other
flammable items exist. Any intrinsically safe instrument must not
cause any type of ignition in any form under normal operation. In
case of failure, it must not produce any form of 'hot spots'.
Review
the IS presentation here.
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Sensor:
an electronic device that produces electrical, optical, or
digital data derived from a physical condition or event.
Data produced from sensors is then
electronically transformed, by another device, into information
(output) that is useful in decision making done by 'intelligent'
devices or individuals (people).
Actuator:
a mechanical device that accepts a data signal and performs an
action based on that signal.
Transducer:
an electronic device that transforms energy from one form
to another.
(Examples: microphone, thermometers, antenna). For the purpose of
this standard, a transducer is a sensor and/or actuator.
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Smart
Sensor: a single device that combines the full
process of this data collection to the final stage of information
output. Smart sensors do not make judgments on the data unless it
is out of range.
CAN: Controller
Area Network (CAN) is a network protocol that was first developed
in 1986, by Robert Bosch, and is documented in ISO 11898 and ISO
11519. It is a bus topology of embedded microcontrollers that
connects devices, sensors and actuators in systems for real-time
control applications. Unlike Ethernet networks, each data message
contains a unique identifier that is broadcast to all network
nodes. The nodes use the identifier to determine the message's
priority for bus access. The CAN protocol prevents data
collisions and allows for an uninterrupted transmission.
More
technical information on CAN can be obtained from the CiA
website.
CANopen:
a higher level of the CAN protocol. CANopen was
"designed for motion-oriented machine control networks, such
as handling systems." It is currently used in medical,
transportation, maritime electronics, and many other
fields.
More
technical information on CANopen can be obtained from the CiA
website.
CiA:
CAN in Automation (CiA) is the international users and
manufacturers group that supports and develops CAN-based
protocols. The representatives of CiA support the standardization
of CAN protocols at national and international levels.
Read
more about CiA here.
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