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0 Content version …
This publication TIC4.0 2021.001 contains the semantic, dataset roadmap, data model and 25 definitions on the topic of Power Source and Activity. This document explains the context for the application of the definitions, the semantics, dataset roadmap and the data model. To improve the readability of the document, the information included is kept at a high level. However, the reader can analyse the information in much more details by using the links in the document. The detailed information accessible through the links is extensive and give the reader a clear overview (depending on their needs from managers to developers), of the TIC4.0 standards for the cargo handling industry.
These 25 definitions are part of the ongoing work to develop a vocabulary for the cargo handling industry. The current list of definitions being worked on can be accessed on the digital platform of TIC4.0. This publication release describes the actual definitions and includes them in the TIC4.0 templates with the general approach on how to use this in data models, schemas and JSON formats as examples.
1 TIC 4.0 scope
The purpose of TIC4.0 is to define a common language that can be represented in an understandable format, including data and information elements suitable for digitization.
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To apply the words in each entry in several digital protocols, a Data Schema is needed. TIC 4.0 will propose Data Schema for each of the most common protocols, but the Data Schema can be used for any protocol. For the examples, TIC 4.0 usually uses JSON as it is very user friendly and easy to read.
2 Semantic
The semantic combines six basic elements: HEADER, SUBJECT, CONCEPT, OBSERVED PROPERTY, POINT OF MEASUREMENT and VALUE to represent a unique reality.
HEADER identifies the message in origin, (destination), time of reference for the message and unique reference.
SUBJECT (who) is the entity that is doing or being the CONCEPT.
CONCEPT (what is-does) refers always to a particular subject (or subject-subsystem) specifying what the subject is (status) or does (action-event)
OBSERVED PROPERTY (how much) is the magnitude of the concept (status, pieces, length, volume, weight, energy, time, speed, power, duration, acceleration…) represented in the value.
POINT OF MEASUREMENT (where) defines where in place and time (past, present, future) the value representing the concept observed property of the subject is measured and represented.
VALUE is the actual measured result for a specific combination of time of measurement + subject + concept + observed property + point of measurement. The same value can be represented in several units.
The combination of a SUBJECT with multiple combinations of CONCEPTs, OBSERVED PROPERTies and POINT OF MEASUREMENTs give us a unique meaning of a VALUE.
TIC 4.0 aims to define each of these elements.
An extensive detailed explanation of this semantic can be found in TIC 4.0 Semantic
3 Data set
The Data Set is just the database that contains the well-defined by TIC 4.0 list of data (a piece of reality). We represent this data as a combination of subject+concept+observed property, indicating what possible point of measurements and units are valid.
Data: represented in a flat format
Subject: including subject and sub-subjects
Concept: represented by the concept id
Observed Property (Obs Property)
Point of Measurement (PoM)
Value: possible units to be used for the data representation
Link to the definition: hyperlink to the definition template for each component of the data.
Workflow status (status): what is the status within the TIC 4.0 workflow
Version: expressed in “year.version”
Release: date of realising in “yyyymmdd” format
Short Description: to help provide a high-level understanding of the data. This short description is not enough to fully understand the data.
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The data set can be found in https://tic40.atlassian.net/l/c/FxmCAXxr
Road Map
This data set is increasing in size very quickly as the representation of the reality is complex. The data set contains not only the published data definition (status = published) but also the data in draft status to allow the developers to have as much visibility as possible to allow program and preparation of the systems in advance.
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4 Data model
For the digital formating of the semantic and data set we need a data model to structure the data and a data schema to define the details of the content like the validity of the format or the type of data (boolean, entire, real etc.), which data is mandatory or could be omitted etc.
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Following the semantic web standard (subject: object) the model has 3 main components: header, asset description and measurement.
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SUBJECT creates the hierarchy tree structure (we have sub-subjects) that helps to identify the boundary of the value. The hierarchy is fixed by TIC 4.0 for each kind of subject (CHE, TOS, Terminal) and can mix any type of subjects (e.g. machine.process = che.move). The subjects conform to an array defined by the (concept) metadata so many subjects identical but with different metadata (id or name or location or…) can be sent in the same message. (1 message with several CHEs or one CHE with several spreaders).
The CONCEPT'smetadata defines “what is” and the CONCEPT“what does”. Both are flat (no hierarchy, no arrays) and we can use as many as necessary. Also, two concepts can be combined with “and” or “or” creating a new concept that in fact is the condition that makes both true. E.g. “hoisting_and_trolleying” that represents the action of hoisting and trolleying at the same time (both statuses must be true).
OBSERVED PROPERTies define the magnitudes of the CONCEPT, are flat (no hierarchy) and can be used as many times as necessary per CONCEPT.
For each OBSERVED PROPERTies an array created by the combination of the different POINT OF MEASUREMENTs in time (actual, estimated, etc), place (input, iinput, ioutput, output), timestamps and the differents Units will give an array (a list) of VALUEs. The array could be as long as necessary per each message. The length will depend on the relation between the data frequency and the message frequency and also the amount of different POINT OF MEASUREMENTs that need to be represented.
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The Data Set is the content of the data model, a flat version without hierarchy or rules. Data Set is used for humans but the machines need the Data Model and the Data Schema to translate it to a digital format.
2021.001 DataModel example
Based on the 2021.001 Data Set road map an extensive JSON example has been completed with all possible data that can be used following the standards. This JSON will be extended as soon as it would be required to represent new subjects, concepts or observed properties.
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5 Definitions
The bricks that build the data set are made by individual elements that are defined by TIC 4.0 following a template. The below is an example of the TIC4.0 concept template.
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Subjects
The subject definitions are referring to the TIC4.0 semantic: SUBJECT (who) is the entity that is doing or being the CONCEPT.
In this 2021.001 we use a complete set of draft definitions subjects for CHE (physical devices) that are listed in the https://tic40.atlassian.net/l/c/FxmCAXxr but only 3 are completely ready for publication.
Release | Nº | Definition | Link | Short Description |
|---|---|---|---|---|
2021.001 | 1 | CHEs (Cargo Handling Equipment) are any machine designed to move (transport or lift) any cargo (including containers) from one location to another. | ||
2021.001 | 2 | A machine designed to convert energy into useful mechanical motion | ||
2021.001 | 3 | Tank used to store the Diesel Exhaust Fluid |
Concepts
The 2021.001 release includes the most relevant concepts for a CHE activity that represents the most important states, i.e. if it is “on”, “off”, “working” or “idle”. But these can be used for any subject including a process. Besides these “status” concepts a relevant set of definitions has been published for the PowerSource (engine) also valid for any kind of “engine” regardless of the type. We invite you to have a look at the https://tic40.atlassian.net/l/c/FxmCAXxr or if you prefer at the CHE JSON data model 2021.001 that includes the road map 2021 for any CHE.
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