User's Manual

Hi-G-Tek Ltd. Microelectronics & Asset Tracking Technology
103
5
System
5.7. System Planning.
When planning an application, attention should be paid to both
system operation and topology. Application requirements and
electromagnetic environment characteristics should also be taken
into account.
The system has 2 basic applications: Fixed Reader applications
and Mobile Reader applications.
The Fixed Reader applications are applications where the Readers
are mounted in a fixed site. The Mobile applications are situations
where the Reader is mounted on a vehicle for monitoring seals in
transit.
5.7.1. Electromagnetic Environment.
Radio frequency communications is the basic technology used by
the system. While this is a very robust method for communicating
with remote devices, several issues should be considered when
planning a site:
- Metal walls should not be used to shield the remote devices.
- Communication distance between remote devices is not a constant.
- Communication distance may vary according to one or more of
the following:
Line of sight between devices - existence and clearance.
Proximity to metal objects.
Indoor or Outdoor environment.
Antenna orientation between the devices.
It is recommended to map the site with actual devices for proper
coverage. When planning the site layout, safe margins should be
taken into account to ensure proper operation at all times. Possible
environmental changes should also be considered. System utilities
should be used to test and verify proper and reliable operation.