Physical Interoperability Task 3.1 Physical Interoperability
Digital transmission via analog channel – principle of operation HDW converter 4-20 mA IN Sensor Watermeter/Pulvimeter Analog /RS232 RS 232/ VOICE CB/TETRA STW converter HDW converter RS232/TCP/IP RS 232/UDP CB/TETRA VOICE/RS 232 OUT Issues related to the concept: CB channels used to telemetry and telecommand Packet Radio (KISS, AX.25) protocols legality in Regione Puglia Single node transmission range PC (SERVER)
Digital transmission via analog channel – realization concept Estimated hardware cost: 200 EUR per node
Digital transmission via analog channel – realization concept Estimated hardware cost: 250 EUR per node Main advantages of the solutions: Price of implementation Simplicity of operation Lack of costs related to further use of the system Main disadvantages of the solutions: Integration and synchronization of the system Lack of certainty of connection stability
Digital transmission via analog channel – example of realization on the basis of Polish ARPS network Polish ARPS network which allows wireless data exchange across the country. Communication is based on AX.25 protocol. Infrastructure allows connection for every user equipped with proper radio communication instruments.
GPRS based multisensory data acquisition – principle of operation Remote water meter reading 4-20 mA TELEMETRIC MODULE (AB MICRO) Sensor GSM/ GPRS Watermeter Pulvimeter Sensor 2 Issues related to the conceptions which are using GPRS: Costs of operation related to static SIM card IP address GPRS range map in Regione Puglia
GPRS based multisensory data acquisition – realization concept Estimated hardware cost: 130 – 450 EUR per node plus 500 EUR router cost
GPRS based multisensory data acquisition – realization concept Estimated hardware cost: 500 - 1000 EUR per node depends from router version Main advantages of the GPRS based solutions: No transmission range limitations Stability of the connection Higher baudrate than in radio communication Main disadvantages of the GPRS based solutions: Transmission dependent from mobile operator Higher price than CB/TETRA based solutions Additional costs related with constant SIM card IP address
Network based on licensed bands (frequencies from 433 to 868 MHZ) principle of operation Issues related to the conception: Costs related to licensed band frequency lease Minimum single node range
Network based on licensed bands (frequencies from 433 to 868 MHZ) realization concept Estimated hardware cost: 500 -1750 EUR per node Main advantages of the solution: The most stable communication link from presented concepts Network dedicated for the particular solution Costs related to network maintenance lower than GPRS solutions Main disadvantages of the solution: Node range highly dependent from topography and obstacles situated on radio signal way Hard and time consuming implementation and testing process Low baudrate
Network based on licensed bands (frequencies from 433 to 868 MHZ) example of usage on the basis of Polish SMOG system SMOG is the forecasting of air pollution propagation system. Structure of the system is based on SATEL radiomodems which allows communication in frequency of 433 MHz licensed band. System is running in Malopolska province. More information and current measurements values at: http://www.smog.imgw.pl/home
What do we have to know before implementation start? Summary Presented solutions are based on SECRICOM project ideas and conclusions All conceptions requires own software development and integration Tests will be the most time-consuming part of task realization What do we have to know before implementation start? Precise requirements concerned to physical layer of the system (measured magnitudes, number of sensors, data storage and visualization) Which of presented solutions is the most suitable to requirements Requirements related to single point transmission range Legality limitations related to wireless transmission (licensed bands, CB radio/TETRA telemetry channels) in Regione Puglia Is in the Regione Pugalia wireless radio network working, if it is, what requirements has to be met to connect to the network (certification, legality)