Sensor

A class to represent a Sensor in the manufacturing system.

Sensors are devices that monitor and collect data about Resources, Locations, or other manufacturing system components. They provide real-time or periodic measurements of various parameters like temperature, pressure, position, speed, etc.

Sensors are connected to various components in the manufacturing system:

• Resources they monitor (machines, tools, conveyors)
• Locations they observe
• Products they inspect
• Parts they measure

Best Practices:

• Define clear measurement ranges and units
• Set appropriate sampling frequencies
• Maintain calibration schedules
• Monitor sensor health
• Handle measurement errors
• Track data history
• Set alert thresholds
• Validate measurements

Attributes:

Name	Data Type	Description
name	str	Human-readable name of the Sensor
sensor_type	str	Type of sensor (temperature, pressure, etc.)
measurement_unit	str	Unit of measurement (°C, bar, mm, etc.)
range_min	float	Minimum measurable value
range_max	float	Maximum measurable value
accuracy	float	Measurement accuracy (± value)
sampling_rate	float	Measurements per second
last_reading	float	Most recent measurement
last_reading_time	datetime	Timestamp of last measurement
alert_min	float	Lower threshold for alerts
alert_max	float	Upper threshold for alerts
status	str	Current sensor status (active, fault, etc.)
calibration_date	datetime	Last calibration timestamp
calibration_due	datetime	Next calibration due date
id	str	Unique identifier
location	Location or Resource	Physical location of the sensor
creation_date	datetime	Timestamp when sensor was created
last_modified	datetime	Timestamp of last modification

Example Configuration:

# Temperature sensor for a CNC machine
temp_sensor = Sensor(
    name="CNC-1 Spindle Temperature",
    sensor_type="temperature",
    measurement_unit="°C",
    range_min=0.0,
    range_max=150.0,
    accuracy=0.1,
    sampling_rate=1.0,  # Hz (readings per second)
    alert_min=10.0,     # alert if below 10°C
    alert_max=120.0,    # alert if above 120°C
    resource=cnc_machine_1
)

# Vibration sensor for predictive maintenance
vib_sensor = Sensor(
    name="Robot-2 Vibration Monitor",
    sensor_type="vibration",
    measurement_unit="mm/s",
    range_min=0.0,
    range_max=50.0,
    accuracy=0.01,
    sampling_rate=100.0,  # 100 Hz sampling
    alert_max=30.0,       # alert if vibration too high
    resource=robot_arm_2
)

# Position sensor for an AGV
pos_sensor = Sensor(
    name="AGV-1 Position Tracker",
    sensor_type="position",
    measurement_unit="m",
    range_min=0.0,
    range_max=100.0,
    accuracy=0.005,
    sampling_rate=10.0,  # 10 Hz position updates
    resource=agv_1
)

note

Sensors are used for monitoring manufacturing processes.

Constructor

def __init__(self, /, *args, **kwargs):

Initialize self. See help(type(self)) for accurate signature.

Example Usage

# Create a new Sensor instance
Sensor(
    args=<_empty>
    kwargs=<_empty>
)