Buildings.Obsolete.Controls.OBC.CDL.Logical

Package with obsolete models of logical blocks

Information

Package with obsolete blocks for elementary mathematical functions for boolean variables.

Package Content

Name Description
Buildings.Obsolete.Controls.OBC.CDL.Logical.Timer Timer Timer measuring the time from the time instant where the Boolean input became true
Buildings.Obsolete.Controls.OBC.CDL.Logical.Validation Validation Collection of models that validate the logical blocks of the CDL

Buildings.Obsolete.Controls.OBC.CDL.Logical.Timer Buildings.Obsolete.Controls.OBC.CDL.Logical.Timer

Timer measuring the time from the time instant where the Boolean input became true

Buildings.Obsolete.Controls.OBC.CDL.Logical.Timer

Information

Timer with option to accumulate time until it is reset by an input signal.

Each time the Boolean input u becomes true, the timer runs, otherwise it is dormant.

Extends from Modelica.Icons.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).

Parameters

TypeNameDefaultDescription
BooleanaccumulatefalseIf true, accumulate time until Boolean input 'reset' becomes true, otherwise reset timer whenever u becomes true

Connectors

TypeNameDescription
input BooleanInputuConnector for signal that switches timer on if true, and off if false
input BooleanInputresetConnector for signal that sets timer to zero if it switches to true. The input value will be ignored if the timer does not accumulate time
output RealOutputyTimer output [s]

Modelica definition

block Timer "Timer measuring the time from the time instant where the Boolean input became true" extends Modelica.Icons.ObsoleteModel; parameter Boolean accumulate = false "If true, accumulate time until Boolean input 'reset' becomes true, otherwise reset timer whenever u becomes true"; Buildings.Controls.OBC.CDL.Interfaces.BooleanInput u "Connector for signal that switches timer on if true, and off if false"; Buildings.Controls.OBC.CDL.Interfaces.BooleanInput reset "Connector for signal that sets timer to zero if it switches to true. The input value will be ignored if the timer does not accumulate time"; Buildings.Controls.OBC.CDL.Interfaces.RealOutput y( final quantity="Time", final unit="s") "Timer output"; protected discrete Modelica.SIunits.Time entryTime "Time instant when u became true"; discrete Modelica.SIunits.Time yAcc "Accumulated time up to last change to true"; Buildings.Controls.OBC.CDL.Interfaces.BooleanInput reset_internal( final start=false, final fixed=true) "Internal connector"; initial equation pre(entryTime) = time; yAcc = 0; equation if not accumulate then reset_internal = true; else reset_internal = reset; end if; when u and (not edge(reset_internal)) then entryTime = time; elsewhen reset then entryTime = time; end when; when reset then yAcc = 0; elsewhen (not u) then yAcc = pre(y); end when; if not accumulate then y = if u then time - entryTime else 0.0; else y = if u then yAcc + (time - entryTime) else yAcc; end if; end Timer;