Instrumentation & Measurement Magazine 23-2 - 47

Beyond Pure Sensing:
IEEE 21450 in Digitalization
of the Development Cycle of
Smart Transducers
Tobias Mitterer and Hubert Zangl

T

he IEEE 21450 standard family [1] has been developed to ease the use of smart transducers in various
applications. The transducer electronic datasheet
(TEDS) defined in the standards provides descriptions of the
sensor and actuator channels in terms of physical quantities,
data representation, measurement range, uncertainty, calibration, etc. Consequently, such electronic datasheets can be seen
as a specification of a device and might therefore already be
conceptually developed in an early design phase.
In this article we illustrate the use of IEEE 21450 TEDS
throughout the design work-flow and how this can support,
for example, a transition from traditional v-model approach
for hardware development toward agile methods, which have
been used very successfully in software development. In addition to the refinement of requirements and specifications,
the datasheet can also be used as a standard format to retain
and exchange information during the design phase. A short
introduction to IEEE 21450 is given in [2] and [3], an example implementation of TEDS is shown in [4] and an example
of using TEDS to connect sensor nodes is shown in [5] and in
[6]. Information on TEDS being used in conjunction with accessing nodes over the internet using Simple Object Access
Protocol (SOAP) is shown in [7], and an example of an extended Network Capable Application Processor (NCAP) used
as a Universal Plug and Play (UPnP) host for automated access
to new nodes is described in [8].
We propose to combine these activities, making the Network Capable Application Processor (NCAP) a central
component in the system (Fig. 1) and the Transducer Electronic Datasheet a means for supporting easy connectivity
and documentation of the process. In this network, a sensor
(or transducer) that gets connected to an NCAP via a wireless or wired interface is made available within the network.

However, the approach is extended to non-IEEE 21451 devices
as it allows TEDS to be added for such physical or virtual devices as well. This procedure thus enables a unified, fast and
dynamic connection procedure for transducers to the network.
To have one common point for the management and configuration, the NCAP provides a web interface and, besides
connection to devices, also allows connections to legacy devices, simulation environments and laboratory setups. For
such connections, the TEDS is not stored in the device and
needs to be provided through the web interface or an API.
With respect to data usage the NCAP can act as a hub to middleware such as ROS or OPC-UA but can also directly write
the data to a file.

Typical Design Process
The way from a first concept of a new product to the final
productive system involves many steps. Market studies and
feedback from customers can be used to identify the needs of
the market for potential new products, functions and services.
Once such needs have been identified, the descriptions of what
is really needed is usually still rather vague. Consequently, in
the next phase the aim is to define user requirements and derive specifications for potential solutions. However, this is
frequently a cumbersome task as the potential user does not
yet know exactly what he needs or what would be possible.
Furthermore, the sensor system developers/concept engineers may even have more difficulties to correctly understand
the needs and match these with possible solutions. Consequently, it is not uncommon that certain functionality within
a solution is over-engineered, i.e., the performance in certain
respects exceeds the actual needs by far, while other functionality performs poorer than required or is even missing. This
may not be because there is no suitable solution but may be

The project was partially funded by the Carinthian Economic Promotion Fund (KWF), the Government of Styria
(Section 8 Health, Healthcare and Science) and the Styrian Business Promotion Agency (SFG) within the 2017 Call
Silicon!Alps-the call for R&D projects in the field of microelectronics in Carinthia and Styria and the Austrian Ministry
for Transport, Innovation and Technology (BMVIT) within the ICT of the Future Programme (4th call) of the Austrian
Research Promotion Agency (FFG) under grant agreement n. 864807 (AutoLOG).
April 2020	

IEEE Instrumentation & Measurement Magazine	47
1094-6969/20/$25.00©2020IEEE



Instrumentation & Measurement Magazine 23-2

Table of Contents for the Digital Edition of Instrumentation & Measurement Magazine 23-2

No label
Instrumentation & Measurement Magazine 23-2 - No label
Instrumentation & Measurement Magazine 23-2 - Cover2
Instrumentation & Measurement Magazine 23-2 - 1
Instrumentation & Measurement Magazine 23-2 - 2
Instrumentation & Measurement Magazine 23-2 - 3
Instrumentation & Measurement Magazine 23-2 - 4
Instrumentation & Measurement Magazine 23-2 - 5
Instrumentation & Measurement Magazine 23-2 - 6
Instrumentation & Measurement Magazine 23-2 - 7
Instrumentation & Measurement Magazine 23-2 - 8
Instrumentation & Measurement Magazine 23-2 - 9
Instrumentation & Measurement Magazine 23-2 - 10
Instrumentation & Measurement Magazine 23-2 - 11
Instrumentation & Measurement Magazine 23-2 - 12
Instrumentation & Measurement Magazine 23-2 - 13
Instrumentation & Measurement Magazine 23-2 - 14
Instrumentation & Measurement Magazine 23-2 - 15
Instrumentation & Measurement Magazine 23-2 - 16
Instrumentation & Measurement Magazine 23-2 - 17
Instrumentation & Measurement Magazine 23-2 - 18
Instrumentation & Measurement Magazine 23-2 - 19
Instrumentation & Measurement Magazine 23-2 - 20
Instrumentation & Measurement Magazine 23-2 - 21
Instrumentation & Measurement Magazine 23-2 - 22
Instrumentation & Measurement Magazine 23-2 - 23
Instrumentation & Measurement Magazine 23-2 - 24
Instrumentation & Measurement Magazine 23-2 - 25
Instrumentation & Measurement Magazine 23-2 - 26
Instrumentation & Measurement Magazine 23-2 - 27
Instrumentation & Measurement Magazine 23-2 - 28
Instrumentation & Measurement Magazine 23-2 - 29
Instrumentation & Measurement Magazine 23-2 - 30
Instrumentation & Measurement Magazine 23-2 - 31
Instrumentation & Measurement Magazine 23-2 - 32
Instrumentation & Measurement Magazine 23-2 - 33
Instrumentation & Measurement Magazine 23-2 - 34
Instrumentation & Measurement Magazine 23-2 - 35
Instrumentation & Measurement Magazine 23-2 - 36
Instrumentation & Measurement Magazine 23-2 - 37
Instrumentation & Measurement Magazine 23-2 - 38
Instrumentation & Measurement Magazine 23-2 - 39
Instrumentation & Measurement Magazine 23-2 - 40
Instrumentation & Measurement Magazine 23-2 - 41
Instrumentation & Measurement Magazine 23-2 - 42
Instrumentation & Measurement Magazine 23-2 - 43
Instrumentation & Measurement Magazine 23-2 - 44
Instrumentation & Measurement Magazine 23-2 - 45
Instrumentation & Measurement Magazine 23-2 - 46
Instrumentation & Measurement Magazine 23-2 - 47
Instrumentation & Measurement Magazine 23-2 - 48
Instrumentation & Measurement Magazine 23-2 - 49
Instrumentation & Measurement Magazine 23-2 - 50
Instrumentation & Measurement Magazine 23-2 - 51
Instrumentation & Measurement Magazine 23-2 - 52
Instrumentation & Measurement Magazine 23-2 - 53
Instrumentation & Measurement Magazine 23-2 - 54
Instrumentation & Measurement Magazine 23-2 - 55
Instrumentation & Measurement Magazine 23-2 - 56
Instrumentation & Measurement Magazine 23-2 - 57
Instrumentation & Measurement Magazine 23-2 - 58
Instrumentation & Measurement Magazine 23-2 - 59
Instrumentation & Measurement Magazine 23-2 - 60
Instrumentation & Measurement Magazine 23-2 - 61
Instrumentation & Measurement Magazine 23-2 - 62
Instrumentation & Measurement Magazine 23-2 - 63
Instrumentation & Measurement Magazine 23-2 - 64
Instrumentation & Measurement Magazine 23-2 - 65
Instrumentation & Measurement Magazine 23-2 - 66
Instrumentation & Measurement Magazine 23-2 - 67
Instrumentation & Measurement Magazine 23-2 - 68
Instrumentation & Measurement Magazine 23-2 - 69
Instrumentation & Measurement Magazine 23-2 - 70
Instrumentation & Measurement Magazine 23-2 - 71
Instrumentation & Measurement Magazine 23-2 - 72
Instrumentation & Measurement Magazine 23-2 - 73
Instrumentation & Measurement Magazine 23-2 - 74
Instrumentation & Measurement Magazine 23-2 - 75
Instrumentation & Measurement Magazine 23-2 - 76
Instrumentation & Measurement Magazine 23-2 - 77
Instrumentation & Measurement Magazine 23-2 - 78
Instrumentation & Measurement Magazine 23-2 - 79
Instrumentation & Measurement Magazine 23-2 - 80
Instrumentation & Measurement Magazine 23-2 - 81
Instrumentation & Measurement Magazine 23-2 - 82
Instrumentation & Measurement Magazine 23-2 - 83
Instrumentation & Measurement Magazine 23-2 - 84
Instrumentation & Measurement Magazine 23-2 - 85
Instrumentation & Measurement Magazine 23-2 - 86
Instrumentation & Measurement Magazine 23-2 - 87
Instrumentation & Measurement Magazine 23-2 - 88
Instrumentation & Measurement Magazine 23-2 - 89
Instrumentation & Measurement Magazine 23-2 - 90
Instrumentation & Measurement Magazine 23-2 - 91
Instrumentation & Measurement Magazine 23-2 - 92
Instrumentation & Measurement Magazine 23-2 - 93
Instrumentation & Measurement Magazine 23-2 - 94
Instrumentation & Measurement Magazine 23-2 - 95
Instrumentation & Measurement Magazine 23-2 - 96
Instrumentation & Measurement Magazine 23-2 - 97
Instrumentation & Measurement Magazine 23-2 - 98
Instrumentation & Measurement Magazine 23-2 - 99
Instrumentation & Measurement Magazine 23-2 - 100
Instrumentation & Measurement Magazine 23-2 - 101
Instrumentation & Measurement Magazine 23-2 - 102
Instrumentation & Measurement Magazine 23-2 - 103
Instrumentation & Measurement Magazine 23-2 - 104
Instrumentation & Measurement Magazine 23-2 - 105
Instrumentation & Measurement Magazine 23-2 - 106
Instrumentation & Measurement Magazine 23-2 - 107
Instrumentation & Measurement Magazine 23-2 - 108
Instrumentation & Measurement Magazine 23-2 - 109
Instrumentation & Measurement Magazine 23-2 - 110
Instrumentation & Measurement Magazine 23-2 - 111
Instrumentation & Measurement Magazine 23-2 - 112
Instrumentation & Measurement Magazine 23-2 - 113
Instrumentation & Measurement Magazine 23-2 - 114
Instrumentation & Measurement Magazine 23-2 - 115
Instrumentation & Measurement Magazine 23-2 - 116
Instrumentation & Measurement Magazine 23-2 - 117
Instrumentation & Measurement Magazine 23-2 - 118
Instrumentation & Measurement Magazine 23-2 - 119
Instrumentation & Measurement Magazine 23-2 - 120
Instrumentation & Measurement Magazine 23-2 - Cover3
Instrumentation & Measurement Magazine 23-2 - Cover4
https://www.nxtbook.com/allen/iamm/24-6
https://www.nxtbook.com/allen/iamm/24-5
https://www.nxtbook.com/allen/iamm/24-4
https://www.nxtbook.com/allen/iamm/24-3
https://www.nxtbook.com/allen/iamm/24-2
https://www.nxtbook.com/allen/iamm/24-1
https://www.nxtbook.com/allen/iamm/23-9
https://www.nxtbook.com/allen/iamm/23-8
https://www.nxtbook.com/allen/iamm/23-6
https://www.nxtbook.com/allen/iamm/23-5
https://www.nxtbook.com/allen/iamm/23-2
https://www.nxtbook.com/allen/iamm/23-3
https://www.nxtbook.com/allen/iamm/23-4
https://www.nxtbookmedia.com