Semiconductor devices - Part 19-2: Smart sensors - Indication of specifications of sensors and power supplies to drive smart sensors for low power operation

IEC TS 60747-19-2:2021 provides a guideline of indication of specifications of a low-power sensor being a device or a module allowing autonomous power supply operation, which contributes to the low-power design of a smart sensing unit. Here, the smart sensing unit comprises a smart sensor, a terminal module, and a power supply, which can send output data of the smart sensor to the outside. This part also provides a guideline of indication of specifications of the power supply to drive the smart sensor(s) in the smart sensing unit. Based on these, the three components of the smart sensing unit can be easily selected and combined from the point-of-view of newly designed, low-power, smart sensing units.

General Information

Status
Published
Publication Date
20-May-2021
Current Stage
PPUB - Publication issued
Completion Date
21-May-2021
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IEC TS 60747-19-2:2021 - Semiconductor devices - Part 19-2: Smart sensors - Indication of specifications of sensors and power supplies to drive smart sensors for low power operation
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IEC TS 60747-19-2
Edition 1.0 2021-05
TECHNICAL
SPECIFICATION
Semiconductor devices –
Part 19-2: Smart sensors – Indication of specifications of sensors and power
supplies to drive smart sensors for low power operation
IEC TS 60747-19-2:2021-05(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC TS 60747-19-2
Edition 1.0 2021-05
TECHNICAL
SPECIFICATION
Semiconductor devices –
Part 19-2: Smart sensors – Indication of specifications of sensors and power
supplies to drive smart sensors for low power operation
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.080.99 ISBN 978-2-8322-9803-9

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TS 60747-19-2:2021  IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 8

4 Indication of specifications of low-power smart sensors ................................................... 8

4.1 Datasheet description of current consumption – time characteristics ....................... 8

4.2 Datasheet description of information regarding under voltage lock out circuit ........ 10

5 Indication of specifications of power supplies to drive smart sensors ............................. 10

Annex A (informative) Practical example of datasheet description of specifications of

smart sensors ....................................................................................................................... 12

Annex B (informative) Hardware configuration examples of a power supply to drive

smart sensor(s) in a smart sensing unit ................................................................................. 14

Annex C (informative) Supplementary explanations of various signals among the

storage device, the battery and the power generation device ................................................ 16

Annex D (informative) Practical example of datasheet description of specifications of

power supply to drive smart sensor(s) ................................................................................... 18

Figure 1 – Block diagram of components in a smart sensing unit ............................................ 5

Figure 2 – Example of detailed block diagram of a smart sensing unit ..................................... 6

Figure 3 – Example of datasheet description of current consumption–time

characteristics (timing chart) with continuous periodic operations of the low-power

smart sensor ........................................................................................................................... 9

Figure A.1 – Practical example of datasheet description of specifications of smart

accelerometer ....................................................................................................................... 13

Figure B.1 – Hardware configuration examples of a power supply to drive smart

sensor(s) in a smart sensing unit .......................................................................................... 15

Figure C.1 – Practical examples of hardware configurations of several signal lines

among the storage, the battery and the power generation device .......................................... 17

Table 1 – Example of datasheet description of current consumption–time

characteristics table with continuous periodic operations of the low-power smart sensor ....... 10

Table D.1 – Practical example of datasheet description of specifications of power

supply to drive smart sensor(s) ............................................................................................. 18

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IEC TS 60747-19-2:2021  IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SEMICONDUCTOR DEVICES –
Part 19-2: Smart sensors – Indication of specifications of sensors
and power supplies to drive smart sensors for low power operation
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

IEC TS 60747-19-2 has been prepared by subcommittee 47E: Discrete semiconductor devices,

of IEC technical committee 47: Semiconductor devices. It is a Technical Specification.

The text of this Technical Specification is based on the following documents:
DTS Report on voting
47E/693/DTS 47E/742/RVDTS

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.

The language used for the development of this Technical Specification is English.

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– 4 – IEC TS 60747-19-2:2021  IEC 2021

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.

A list of all parts in the IEC 60747 series, published under the general title Semiconductor

devices, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC TS 60747-19-2:2021  IEC 2021 – 5 –
INTRODUCTION

The development of smart sensors which integrate analogue-to-digital conversion and digital

processing of the captured sensor signal(s) is in progress. A smart sensing unit, which

comprises a smart sensor; a terminal module, to control the smart sensor and perform wireless

communication; and a power supply for the smart sensor and the terminal module, can send

the output data of the smart sensor wirelessly to the outside. Here, the power supply may be a

plug-in power supply, a battery, an energy harvester, or their combination. A smart sensing

network where a large number of smart sensing units are located in manufacturing factories,

offices, and stores has been examined. With this network, environmental monitoring, sensing

operational situations of manufacturing equipment and sensing other various events contribute

to the realization of the following outcomes by analysing the collected sensing data. Namely,

energy saving, improvement in factory productivity such as operation rate, shortening of

production lead time, preventive equipment maintenance, and product quality improvement can

be achieved.

However, as to the three components of the smart sensing unit, namely, smart sensor, terminal

module, and power supply, standardization regarding control schemes to connect the

components mutually and regarding indication of specifications of the components has not been

sufficiently established yet. This issue leads to the present situation, where the development of

each component in the smart sensing unit has not proceeded efficiently. (Figure 1 shows the

block diagram of the components in the smart sensing unit and Figure 2 shows an example of

the detailed block diagram of the smart sensing unit.)
Key:
1 smart sensing unit
2 smart sensor
3 terminal module
4 power supply
5 electrical connections
Figure 1 – Block diagram of components in a smart sensing unit
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– 6 – IEC TS 60747-19-2:2021  IEC 2021
Key:
1 smart sensing unit 8 data processing circuit
2 smart sensor 9 wireless communication circuit
3 sensor element 10 autonomous power supply module
4 analogue-to-digital converting circuit 11 power generation element
5 digital processing circuit 12 power storage element
6 terminal module 13 power management circuit
7 smart sensor control unit 14 electrical connections
Figure 2 – Example of detailed block diagram of a smart sensing unit

The IEC 60747-19 series aims to address this issue. The IEC 60747-19 series comprises two

parts and its structure is currently conceived as follows:
Part 19-1 – Control scheme of smart sensors

Part 19-2 – Indication of specifications of sensors and power supplies to drive smart sensors

for low power operation

Part 19-1 specifies a control scheme of the smart sensor from the terminal module in the smart

sensing unit. Generally, the manufacturers of sensors have incorporated into the sensors

various parameters and conditions for sensing operations to fulfil various requests and needs

of the users. Therefore, it has been quite difficult for the users to understand how to set the

parameters and conditions adequately and master the use of sensors. This issue has been a

considerable obstacle in designing the smart sensing unit and smart sensing system. The main

objective of IEC 60747 Part 19-1 is to solve this obstacle for future expansion of the smart

sensors and smart sensing network systems.
---------------------- Page: 8 ----------------------
IEC TS 60747-19-2:2021  IEC 2021 – 7 –

This document aims to provide a guideline to indicate information that is required when the

smart sensing unit is newly designed. When the smart sensing unit is newly designed especially

using an autonomous power supply, the designers have to appropriately arrange selection of

the components of the unit and their usage conditions to satisfy that power capability of the

power supply successfully exceeds total power budget to be consumed in the unit as a whole.

First, information about the detailed power consumption characteristics of the smart sensors is

indispensable for this achievement. Namely, information about time-variation power

consumption characteristics which is not necessarily described in the datasheet of sensors is

essential when intermittent sensing operations are often adopted and a careful lower power

design including time-variation characteristics to allow adoption of an autonomous power supply

is needed in IoT (Internet of Things) applications. Therefore, this document discusses an

indication of smart sensors’ time-variation power consumption characteristics. Second,

information about total power capability of the power supply to drive the unit and the smart

sensor(s) is essential. This power supply as a module comprises (a) primary battery(ies),

and(or) (a) secondary battery (ies), and (or) (an) energy harvester(s), or their combinations. To

accomplish proper configuration, the information of specifications of power supply is needed.

Thus this document also discusses indication of specification of power supply. With the

establishments of the appropriate indication, the three components of the smart sensing unit

can be easily selected and combined from the point-of-view of a low-power design, when the

smart sensing unit is newly designed and the overall design of the smart sensing unit itself can

be facilitated. If the telecommunication between smart sensor unit and autonomous power

supply unit is done well, the both units work optimally.

Regading smart sensors, many kinds of operation modes are equipped with the availability of

various functions by digital processing. When developing these smart sensors, a careful and

precise power consumption design including time-variation characteristics and depending on

each operation mode become essential. Therefore, the guideline specified in this document is

essential for developing low-power smart sensors and their related devices.
Because the corresponding market has been evolving, and the requirements of the

specifications of the components can be slightly changed during this process, guidelines are

reported in this document as a Technical Specification (TS) to design the smart sensing unit

and its components.
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– 8 – IEC TS 60747-19-2:2021  IEC 2021
SEMICONDUCTOR DEVICES –
Part 19-2: Smart sensors – Indication of specifications of sensors
and power supplies to drive smart sensors for low power operation
1 Scope

This part of IEC 60747 provides a guideline of indication of specifications of a low-power sensor

being a device or a module allowing autonomous power supply operation, which contributes to

the low-power design of a smart sensing unit. Here, the smart sensing unit comprises a smart

sensor, a terminal module, and a power supply, which can send output data of the smart sensor

to the outside. This part also provides a guideline of indication of specifications of the power

supply to drive the smart sensor(s) in the smart sensing unit. Based on these, the three

components of the smart sensing unit can be easily selected and combined from the point-of-

view of newly designed, low-power, smart sensing units.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies.

For undated references, the latest edition of the referenced document (including any

amendments) applies.
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
autonomous power supply
standalone power supply with batteries and (or) energ
...

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