Version 2 (modified by 14 years ago) (diff) | ,
---|
Observation and Measurement
The values measured by sensors are exposed as Observation and Measurement values in SENSEI. That means the values are annotated by meta-data providing additional information on how to interpret the value. Required is the data type as well as the unit of measurement. Also a time stamp is given together with the measurement. Currently there is no standard for time stamp format. Using Unix time is considered also.
example for a light measurement
<?xml version='1.0' encoding='UTF-8'?> <!DOCTYPE rdf:RDF [ <!ENTITY rdf 'http://www.w3.org/1999/02/22-rdf-syntax-ns#'> <!ENTITY rdfs 'http://www.w3.org/2000/01/rdf-schema#'> <!ENTITY sensor 'http://www.ict-sensei.org/Sensor#'> <!ENTITY mo 'http://www.ict-sensei.org/MeasurementAndObservation#'> <!ENTITY provider456 'http://www.resource-provider-456.com/resources#'> ]> <rdf:RDF xmlns:rdf="&rdf;" xmlns:rdfs="&rdfs;" xmlns:provider456="&provider456;" xmlns:mo="&mo;" xmlns:sensor="&sensor;"> <sensor:Light rdf:about="&provider456;LightSensor15" mo:hasTimeStamp="Thu Jan 14 09:15:36 2009" mo:hasDecimalValue="0.23" mo:hasUnit="percent"> </sensor:Light> </rdf:RDF>
Attachments (7)
- Accel sensor phase3.png (10.1 KB) - added by 14 years ago.
- Actuators phase3.png (15.8 KB) - added by 14 years ago.
- Button sensor phase3.png (6.1 KB) - added by 14 years ago.
- Light sensor phase3.png (7.1 KB) - added by 14 years ago.
- NMIB phase3.png (27.8 KB) - added by 14 years ago.
- OaM sensors phase3.png (50.1 KB) - added by 14 years ago.
- OaM phase3.png (13.5 KB) - added by 14 years ago.
Download all attachments as: .zip