ETAS ES441.1 - 5 Functional Description; Measuring Sensor Signals; Acquisition and Conversion; Configuration and Adaptation

ES441.1 - User’s Guide 33
ETAS Functional Description
5 Functional Description
This chapter contains information on the following topics:
• "Measuring Sensor Signals" on page 33
• "Definitions" on page 35
• "Signal Sampling" on page 38
• "Overview of the Measuring Capabilities of the ES441.1" on page 39
• "Overflow" on page 39
• "Measuring Signal State" on page 40
• "Counter" on page 41
• "Time Measurement" on page 54
• "Frequency Measurement" on page 58
• "Timeout (Monitoring the Input Signal)" on page 63
• "Example" on page 65
5.1 Measuring Sensor Signals
5.1.1 Acquisition and Conversion
In the automotive sector, non-electrical variables, such as temperature, torque,
force, pressure, fluid level, course (distance) and flow often need to be mea-
sured. These non-electrical physical variables are converted to electric signals
using transducers and sensors and then further processed.
Acquiring these signals is the basis for determining information. The following
table contains a few examples:
5.1.2 Configuration and Adaptation
Configuring Signals in the Calibration Software
The signals acquired can, for example, be configured in accordance with the fol-
lowing criteria:
• name or
•unit or
• aquisition rate.
Measuring Capability Information to be Determined
Frequency measurement Revolutions per minute
Velocity
Counter measurement Flow rate
Position
PWM measurement Activation duration of servomotors
Control of heating elements