Test and screening platform that proves the accuracy of Hall Effect speed sensors and tachometers used in rail (including ERTMS) applications against a high-accuracy encoder reference — combining an STM32 ARM measurement layer with a Raspberry Pi touch interface. Comparing the device under test against the reference clearly separates faulty units from healthy ones.
Speed sensors and tachometers are critical components whose speed and motion measurements must be trusted, from rail systems to industrial drives — and their measurement accuracy must be proven regularly. The Speed Sensor - Tachometer Test Bench was developed by Planck R&D to standardize this verification process, meeting the high precision required by railway/ERTMS applications with a traceable test flow.
The system rests on a two-layer architecture connected over serial communication: an STM32 ARM measurement layer performing precise speed measurement, and a Raspberry Pi touch interface layer where the operator manages the test. Values of the device under test are compared against an encoder reference of known accuracy, the phase difference between encoder channels is analyzed, and pass/fail evaluation secures the quality control and screening process.
Objective validation by comparing the device under test against an encoder reference of known accuracy.
Coverage of both low and high speed regions through controlled motor speed scenarios.
Direction and signal integrity verified by measuring phase between tachometer encoder channels.
Assured quality control by decisively separating healthy and faulty units.
In-house engineering & manufacturing
Türkiye-based engineering company carrying out in-house manufacturing and software development for railway signaling, ETCS/ERTMS on-board systems and test equipment.
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