From 9163f09b69769c0ec52adf337785fd700ace005d Mon Sep 17 00:00:00 2001 From: Blaise Thompson Date: Tue, 10 Apr 2018 20:14:00 -0500 Subject: 2018-04-10 20:13 --- acquisition/chapter.tex | 116 +++++++++++++++++++++++++++++++++++++----------- 1 file changed, 90 insertions(+), 26 deletions(-) (limited to 'acquisition') diff --git a/acquisition/chapter.tex b/acquisition/chapter.tex index 02be26a..803049e 100644 --- a/acquisition/chapter.tex +++ b/acquisition/chapter.tex @@ -94,6 +94,26 @@ between them. % % TODO: describe each of the sections of this chapter +In designing PyCMDS, I was inspired by the nervous system... + +\begin{dquote} + The autonomic nervous system, which innervates primarily the smooth musculature of all organs, + the heart and the glands, mediates the neuronal regulation of the internal milieu. % + The actions of this system, as its name implies, are in general not under direct voluntary + control. % + These characteristics distinguish the autonomic nervous system from the somatic nervous system, + which mediates afferent and efferent communication with the enviornment and, for the most part, + is subject to voluntary control and accessible to consciousness. % + + The autonomic and somatic systems operate hand in hand... + + The functions of the autnomic nervous system are to keep the internal milieu of the body constant + (homeostasis...) or adjust it as required by changing circumstances (e.g., mechanical work, food + intake, water deprivation, heat or cold). % + + \dsignature{W. J\"{a}nig, Autonomic Nervous System (1989) \cite{JanigW1989a}} +\end{dquote} + \clearpage \section{Graphical user interface} % ============================================================= @@ -385,6 +405,8 @@ which point \python{Driver.dequeue} will be called in the worker thread. % There is no way for the driver to command hardware to do something in the main thread, but the driver can trigger signals like \python{update_ui} and modify Mutexes. % +[PARENTS ARE VIRTUAL HARDWARE] + \begin{figure} \includepython{"acquisition/parent_hardware.py"} \caption[Parent to hardware and sensors.]{ @@ -409,8 +431,8 @@ The PyCMDS GUI must change depending on which exact hardware, sensors, and acqui being used on a given instrument and given day. % Internally, the GUI components are made to be modular and flexable to accommodate this requirement. % - -[programmatically defined GUI] +Rather than having each piece placed ``by hand'', the PyCMDS GUI is defined programmatically and, +as such, the full power of abstraction and inheritance is available to the GUI-defining code. % To keep things simple and easy to extend, PyCMDS is made up of only a few minimalist GUI elements. % @@ -460,6 +482,8 @@ delay stage. % PyCMDS uses pyqtgraph \cite{pyqtgraph} for interactive plotting. % pyqtgraph is great because it is optimized for speed and interactivity. % +Currently only line plots are supported (through the \python{PyCMDS.project.widgets.Plot1D} class), +but 2D plots are supported by pyqtgraph and could be added in future versions. % For those wanting to learn more, all graphical components are defined in \bash{PyCMDS/project/widgets.py}. % @@ -639,39 +663,83 @@ Old boxcar: 300 ns window, ~10 micosecond delay. Onset of saturation ~2 V. \section{Autonomic} \label{aqn:sec:autonomic} % ================================================== -\begin{dquote} - The autonomic nervous system, which innervates primarily the smooth musculature of all organs, - the heart and the glands, mediates the neuronal regulation of the internal milieu. % - The actions of this system, as its name implies, are in general not under direct voluntary - control. % - These characteristics distinguish the autonomic nervous system from the somatic nervous system, - which mediates afferent and efferent communication with the enviornment and, for the most part, - is subject to voluntary control and accessible to consciousness. % +The autonomic system is used to define ``reflexes'' for PyCMDS---operations that are automatically +applied when certain conditions are met. % +Currently the autonomic system has only functionality: \emph{offset} certain hardware as functional +of other hardware's positions. % - The autonomic and somatic systems operate hand in hand... +The classic example of autonomic offsets comes from spectral delay correction (see section +[ACT]). % +Spectral delay refers to the small delay changes that occur when OPAs change output frequency. % +To correct for spectral delay, the appropriate delay stages can simply be \emph{offset}. % - The functions of the autnomic nervous system are to keep the internal milieu of the body constant - (homeostasis...) or adjust it as required by changing circumstances (e.g., mechanical work, food - intake, water deprivation, heat or cold). % +In PyCMDS, the autonomic system is fully general---that is to say, any hardware can be offset +according to any other hardware. % +This means that spectral delay correction is possible for arbitrarily complex laser setups, and it +means that PyCMDS is prepared for corrections that have not yet been fully implemented, such as +automated power correction. % - \dsignature{W. J\"{a}nig, Autonomic Nervous System (1989) \cite{JanigW1989a}} -\end{dquote} +Simple plain-text \bash{.coset} files define the offset arrays. % +They are automatically generated using processing scripts in \python{attune} [CITE]. % +Their headers prevent them from being loaded in the wrong spot. % +These files are internally represented as instances of the \python{CoSet} class, which is capable +of linear interpolation and extrapolation at the edges. % -% TODO: concept of additive offsets +A single hardware can be offset by multiple other hardwares. % +In such cases, \emph{offsets always add}. % \begin{figure} - \caption[Representative spectral delay correction]{ - CAPTION TODO - } - \label{aqn:fig:sdc} + \caption{AUTONOMIC SDC SCREENSHOT} \end{figure} - + +\clearpage \section{Somatic} \label{aqn:sec:somatic} % ======================================================= In contrast with the autonomic system (\autoref{aqn:sec:autonomic}), the somatic system is all about voluntary, user specified motion. % This is where the fun stuff happens---the acquisitions! +PyCMDS uses the words ``scan'' and ``acquisition'' in very careful ways. % +\begin{ditemize} + \item An acquisition is a single user-defined, enqueable, instruction. + \item A scan is a single traversal in the multidimensional hardware space. % +\end{ditemize} +Each scan corresponds to one \bash{.data} file, and one WrightTools \python{Data} instance (see +section ...) % +There can be many scans within a single acquisition. % +And there can be many acquisitions in a queue. % + +PyCMDS saves the data that it is collecting within a nested folder structure +queue/acquisition/scan. % +A \bash{.queue} file holds everything needed to recreate the queue, \python{.aqn} files define each +acquisition in plain text and \python{.data} files hold the multidimensional data itself. % + +In this section I describe each component of the somatic system in greater detail. % + +\subsection{Queue manager} % --------------------------------------------------------------------- + +The queue manager keeps track of all enqueued acquisitions, and tells each acquisition when to +begin. % +A singleton \python{Queue} class lives in the main thread and handles interfacing to the +\bash{.queue} plain-text file. % +When a user appends new acquisitions, or changes their order, the \python{queue} instance makes +sure that those changes are reflected in the GUI and the file. % + +A special singleton \python{QueueStatus} keeps track of, well, the queue status: a series of +booleans \python{go}, \python{going}, \python{pause}, \python{paused}, \python{stop}, and +\python{stopped}. % +The verb booleans (\python{go}, \python{pause}, \python{paused}), are control flags, to be +written by the main thread. % +The present particple booleans (\python{going}, \python{paused}, \python{stopped}) are flags to be +written by the worker thread to indicate status of the current acquisition. % + +A singleton \python{Worker} class lives in the acquisition worker thread and carries out the actual +operation. % +The \python{queue} instance pushes operations to the \python{worker}, and the \python{worker} sends +a signal that causes \python{queue.on_action_complete} to be called. % +If there are more enqueued acquisitions, and \python{queue_status.go} is true, the \python{queue} +instance pushes the next operation to the \python{worker} and the process starts over again. % + \subsection{Scans} % ----------------------------------------------------------------------------- The central loop of scans in PyCMDS. % @@ -731,10 +799,6 @@ Automatically do appropriate scans and process as in chapter... Dedicated to poynting (get content from Kyle S)... -z\subsection{Queue manager} % --------------------------------------------------------------------- - -\subsection{The central loop of PyCMDS} % -------------------------------------------------------- - \subsection{The data file} % --------------------------------------------------------------------- Does not have the same dimensionality restrictions as prior acquisition software. % -- cgit v1.2.3