BioGraph Signal Element

Summary ¶

	BioGraph Signal
Info
Category:	Signal Acquisition		AddIn:	Signal Processing
Creator:	OkazoLab		Scope:	Experiment
Owns Snippets:	None		Usage:	Snippets

Properties ¶

Name	Description	Constraints	Type	On runtime change
Biograph Server
Biograph Server Address	Defines the address of a computer on which the Biograph server is running. Use '127.0.0.1', if the Biograph server runs on the same computer.	Design Time..	String
Biograph Port Number	Defines the port number of the Biograph server	Design Time..	Int32
Sampling Rate	Defines the requested sampling rate (in Hz) of the Biograph server	Design Time..	Double
Action Channel Info
Update Channel Info Now	Assign 'true' at the runtime, to update the channel info by code	Runtime Command..	Boolean
Channel Type	Returns an array of action channels types from the current configuration of the Biograph server.	Status..	cxcAct..
Threshold1	Returns a double array of the thresholds 1 from the current configuration of the Biograph server.	Status..	Double..
Threshold2	Returns a double array of the thresholds 2 from the current configuration of the Biograph server.	Status..	Double..
Scale Minimum	Returns a double array of the signal scale minimums from the current configuration of the Biograph server.	Status..	Double..
Scale Maximum	Returns a double array of the signal scale maximums from the current configuration of the Biograph server.	Status..	Double..
Signal Generator
Signal Source	Defines a source for the signal. The emulated rhythmes can be used for offline validation of the chosen analysis settings	Design Time..	enEmul..
Emulated Sampling Rate	Defines the emulation sampling rate (samples per second), when data is generated or streamed from a file.	Design Time..	Double
Primary Frequency	Defines the frequency of the primary rhythm in the generated signal, in Hz. Assign the zero to exclude the primary frequency from the generated signal.	Design Time..	Double
Secondary Frequency	Defines the frequency of the secondary rhythm in the generated signal, in Hz. The secondary frequency magnitude is a half of the primary frequency magnitude. Assign the zero to exclude the secondary frequency from the generated signal.	Design Time..	Double
Noise Level	Defines the noise level (in % to the norm magnitude of the primary frequency). The noise is added to the generated signal. Assign the zero the exclude the noise from the generated signal.	Design Time..	Double
External Datafile	Opens the dialog for selecting a data file containing a stream of double numbers representing a signal. If a file name without a path is defined, the data file will be picked up in the location of the experiment file.	Design Time..	String
Channel Configuration
Selected Channels	Defines what signal channels are selected for acquisition within EventIDE. Selected channels are registered in the EventIDE signal pool at runtime and become available for the signal analysis elements.	Design Time..	IList
Selected Channel Count	Indicates how many signal channels are currently selected for acquisition	Status..	Int32
Total Channel Count	Indicates how many signal channels are available for acquisition in the total	Status..	Int32
Buffer Size	Defines the size (in samples) of a circular buffer that stores incoming signal data.	Design Time..	Int32
Runtime Control
Reset Signals Now	Runtime commands that resets the signal buffers and data acquisition	Runtime Command..	Boolean
Control
Is Enabled	If set to false the element is completely omitted when the experiment is run	Design Time..	Boolean
Title	Title of the element	Design Time..	String

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Description ¶

Practical Use ¶

1. Make use that the Biograph server application is operational and connected to the EventIDE computer by a network (or, runs on the same computer).
2. Add a new Biograph Signal element to any event in your experiment (the element is global and works from the start to the end of experiment).
3. Select the new Biograph Signal element and browse its properties in the Property panel.
4. Set the Biograph Server Address and Biograph Port Number properties, if necessary.
5. Select the channels for acquisition and buffering via the Selected channels property.
6. Update the Action Channels Info by requesting the Biograph configuration with the Update Channel Info action
7. Once the channels are selected, you can access them with by of the signal processing elements.
   

Notes ¶

• Reading the Biograph signals performs in the main Control Loop of an EventIDE experiment. If the control loop interval exceeds 62.5 ms (e.g. during heavy graphical updates), some data samples can be lost. Normally, the control loop interval stays within 1ms, which is safe for loosless signal reading.