Building Definition Language

A Sensor is a Component that measures or detects a physical, environmental, operational, or logical condition.

An Actuator is a Component that changes a physical or operational condition in response to an authorized command.

Every Sensor shall define:

Sensor Type and Instance IDs;

measured quantity;

unit;

range;

accuracy;

uncertainty;

resolution;

sample rate;

response time;

location;

orientation;

calibration;

data Interface;

diagnostic capability;

failure behavior.

Example:

sensor Node_Strain_Sensor_01 : StrainSensor {

id: "s05:sensor:node-strain-01";

installed_on: @Node_N01;

measurement_axis: @Node_N01_CS.x_axis;

range: [-2000 microstrain, 2000 microstrain];

accuracy: ±10 microstrain;

calibration: @Calibration_Record_001;

}

Every Actuator shall define:

controlled quantity or motion;

operating range;

maximum force or torque;

speed;

position feedback;

command Interface;

local interlocks;

safe state;

manual override;

failure behavior.

Example:

actuator Water_Shutoff_Actuator_01 {

controls: @Main_Water_Shutoff;

positions: [open, closed];

feedback: @Water_Shutoff_Position_Sensor;

safe_state: closed;

}