Internet of Things Architecture

EPCIS data within a so-called EPCIS record can be divided in several
categories as follows^8 (see also Table 35 ):

 Static Data: class level and instance level data, which do not change

over time during the physical object life span

o Class Level Data: there remain identical to any object which is an

instance of that class;

o Instance-Level Data: the data may vary within objects instance of

a class. Typical examples are lot number, expiry date, number

within a lot, S/N etc...

 Transactional Data: which changes and grows over the physical object

life span, possibly created by more than one actor along a supply chain

for instance:

o Instance observation: it records events concerning the Physical

Objects and often relates to dimensions like time, location, other

EPC, and business process steps;

o Quantity observation: records events concerned with measuring

the quantity of objects within a particular class. 5 dimensions:

time, location, object class, quantity, business step;

o Business Transaction Observation: records association

between one or more EPC and a business transaction. 4

dimensions time, one or more EPCs, business process step,

business transaction id.

EPCglobal

Concept

IoT Ref. Model

Concept

Comments

RFID Tag Device/Tag Virtual entity representing RFID tag

associated with the Physical Entity

EPC Virtual Entity Electronic Product Code. It is encoded on

the RFID tag

EPCIS Event Value Might be just a wrapping of IPCIS data in

the form of an event...

EPCIS Data Value Is the data associated with the Physical

Object and therefore contained in the

EPCIS Virtual Entity

(^8) Excerpt from the EPCglobal Architecture document.