measures vi are blue

daqXML is in red

ROOT    :ext: :/cvsroot/daqxml/

PROTOCOL : secure Shell

SERVER  cvs.sourceforge.net

REPOSITORY DIRECTORY /cvsroot/daqxml/

the daqXML schema provides the deinition of all the elemnt that compose a session template file 

The current schema file is daqxml_0.2.xsd ,the current developement schema is  daqxml_0.2.dev.xsd

The schema  is used to describe a  measurement seesion. The data hyearachy structure consist of a session  tag that includes the head and one or more request.

The head section contains general information and setup parameters that are common to all the requests  included in the session.

The following tags are permitted

Name : the name of the measurment that will be performed

OriginalStation :  the URL of the station that is posting this template

Description : a description of the measurment

Session_id : can be used to differentiate sessions once executed, blank in the template

status : can be used to indicate the status of the station. blank in the template

execution : URL of the station that will perform the measurment

destination : URL of the datstore where the resulting data will be sent

user : identification as username/password if required

start  : can be used to program a start of the measurment

end  : can be used to program an end to the measurment

parameter : measurment parameters

The head section can be followed by one o more requests. Each request is composed by

description : description of the request

parameter : measurment parameters

data :   resulting dataset, added after the measurment

daqXML provides a standard to describe instruments and measurements. daqXML can be used in the design, the deployment and the operations of small to large, distributed, and heterogeneous, data acquisition systems.

At the foundation of the daqXML concept lies the daqML schema. This an open software developement promoted by Adance. The latest versions of the schema can be dowloaded from the daqXML web site, sourceforge and the xml.org registry

Associated to the daqXML schema, the process for designing, implementing, running data acquisition systems and the distribution of the data collected has been modeled using  UML

Following the schema, once can create a template request for a specific measurement station. The template request can be loaded into the station for execution. Once executed, the acquired data is appended t-o he the request file and the resulting file contains the data and the configuration description.

The template file can also be published, so other persons interested can retrieve, modify it and submit a valid request. XSL transformation can be used to create a form that users can use to customize the request.

A station that is on line can be fed a session template or it can retrieve one from a remote server.

An XSL transformation can be used to automatically generate a form that a user can fill to customize it's request.

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