Nopeusanturilta

Nopeusanturilta is a Finnish term used in engineering and automotive contexts to refer to the data, signal, or information derived from a speed sensor. The compound is formed from nopeus (speed) and anturi (sensor), with the suffix -ilta indicating the source or origin (from). Thus, nopeusanturilta literally means "from the speed sensor" and is used to describe the sensor output as a data source in measurements and control systems.

In practice, the expression denotes the electrical or digital signal produced by a speed sensor, such as a wheel speed sensor or transmission sensor. In automotive applications, such signals are typically used by engine control units (ECUs) and anti-lock braking systems (ABS) to estimate vehicle speed. The sensor often produces a pulsed signal with a frequency proportional to speed; the ECU or a data logger converts pulses to velocity via wheel circumference and gearing factors.

Signal quality is a common concern: noise, missed pulses, or intermittent grounding can corrupt nopeusanturilta data, leading to incorrect speed estimates. Faults may arise from sensor wear, wiring faults, or electromagnetic interference. Data processing often includes filtering, debouncing, and calibration to maintain accuracy.

Related concepts include wheel speed sensor, vehicle speed sensor, tachometer, ABS, and data acquisition. The term is primarily used in Finnish-language technical documentation and discussions of sensor data pipelines.