In my view it should. 

Thanks so much for your reply Prof.Harekrishna Misra, but Could you pleased explain more based on your opinion?

Dear Pagon,

In information sciences an ontology is the specification of the conceptualisation on the domain of interest. You just need to trust your conceptions (and thus, your conceptualisations) and attempt to describe things in the way they are and you see them. 

Any idea can be conceptualised in an ontology, so the trust concept can be included in IoT ontologies by being careful how this concept is related to others in that domain. The common issue with ontologies is that there are too many with different scope and purpose. My recommendation is to reuse and extend (if exist on th IoT field) well-known ontologies; or design your own ontology with possibilities to be reused by others. Reutilization is one of the advantages of ontologies.  

Thanks all of you so much. 

Jorge Calvillo, your comment is very helpful for me. Btw, Do you know any exist IoT ontologies that extended with trust? 

Not, sorry, but I am sure that there are numerous papers using onotologies on the IoT field

it's OK. Thanks so much for your info. I have also read many papers about using ontologies in IoT but haven't found about extended ontologies with Trust yet.

what is the ontology of IoT? I have developed an ontology of big data  analytics, you can read it entitled big data analytics as a service for BI

Thanks so much