Project Deliverable D50 Report on Best Practices Workshop - Ifremer
Project Deliverable D50 Report on Best Practices Workshop - Ifremer
Project Deliverable D50 Report on Best Practices Workshop - Ifremer
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This Reference Model has the objective to take in account a wide range of possible<br />
implementati<strong>on</strong>s. In real world, we will find more simplified observatories where some of the<br />
blocks can be bypassed.<br />
The following descripti<strong>on</strong>s apply to figure 7.<br />
Standards and protocols are proposed to communicate different main blocks or sec<strong>on</strong>dary<br />
blocs:<br />
Main Blocks: Sec<strong>on</strong>dary Blocks<br />
Instrument Sensor, ADC, Processing, Calibrati<strong>on</strong>, Storage<br />
C<strong>on</strong>centrator<br />
Sea Stati<strong>on</strong> C<strong>on</strong>troller, Buffer<br />
Node or Juncti<strong>on</strong> Box Switch, Modem<br />
Shore Stati<strong>on</strong> Modem, C<strong>on</strong>troller<br />
Crystal, CLK<br />
Operators<br />
Clients<br />
Archive<br />
Main communicati<strong>on</strong> protocols and initiatives to take into account in order to communicate<br />
different blocs are:<br />
RS232, CAN, RS485, RS422, Ethernet, USB, RF, Acoustic, Satellite and over this physical<br />
layers CANopen, TCP/IP, UDP, 1451.0, PUCK, Sensor Web Enable (SWE), Sensor<br />
Observati<strong>on</strong> Service(SOS), Sensor Alert Services(SAS), Sensor Planning Services (SPS),<br />
ZeroC<strong>on</strong>f, NMEA, PPS; IEEE1588 and NTP.<br />
Reference Model brief Descripti<strong>on</strong><br />
An instrument is composed by theses main blocs: primary sensors, ADC functi<strong>on</strong>,<br />
Calibrati<strong>on</strong>, Processing, storage, and/or Power Supply.<br />
a: c<strong>on</strong>necti<strong>on</strong> a represents communicati<strong>on</strong> between primary sensor to ADC. It will be mainly<br />
analog communicati<strong>on</strong> even if could be digital if the primary sensor is digital or quasi-digital.<br />
Different Instruments can be c<strong>on</strong>nected point to point or in a multi-drop network to a<br />
c<strong>on</strong>centrator.<br />
b: c<strong>on</strong>necti<strong>on</strong> b represents this point to point or multi-drop network to a c<strong>on</strong>centrator.<br />
Different C<strong>on</strong>centrators can be c<strong>on</strong>nected to a Main C<strong>on</strong>troller (Sea Stati<strong>on</strong>) where a buffer<br />
memory can be used to assure data storage while communicati<strong>on</strong> with shore stati<strong>on</strong> is off.<br />
c: c<strong>on</strong>necti<strong>on</strong> c represents the c<strong>on</strong>necti<strong>on</strong> between different c<strong>on</strong>centrator and the Sea Stati<strong>on</strong><br />
C<strong>on</strong>troller.<br />
Different Sea Stati<strong>on</strong> C<strong>on</strong>trollers will communicate with shore stati<strong>on</strong> through a Node or<br />
Juncti<strong>on</strong> Box, composed by a switch and a modem.<br />
d: c<strong>on</strong>necti<strong>on</strong> d represents the c<strong>on</strong>necti<strong>on</strong> between Sea Stati<strong>on</strong> C<strong>on</strong>trollers and a<br />
communicati<strong>on</strong> Switch.<br />
<str<strong>on</strong>g>Deliverable</str<strong>on</strong>g> #50 - update October 2010 30