We congratulate Golden Harish Devadhas to his degree in Electrical engineering and information technology at the Hochschule Karlsruhe, University of Applied Sciences with excellent results. His work was part of the Sensor Systems Technology Program and was supported by BeST Berliner Sensortechnik GmbH.

From left to right: Jonas Remmert, Prof. Harald Sehr, Golden Harish Devadhas, Oliver Völckers
Title of his thesis: “A Minaturised, Energy efficient Force and Dislocation
sensor for a hand crimping tool”.

The oral examination with presentation took place on Wednesday, 22 January 2025 at Hochschule Karlsruhe. Examinators: Prof. Harald Sehr, Prof. Thorsten Leize. Assessors: Jonas Remmert, Oliver Völckers
Abstract:
"Crimping tools play a critical role in various industries, ensuring secure connections between wires, connectors, and terminals. However, assessing the quality of crimps remains a challenge, with current methods either being manual, inefficient, or relying on expensive equipment. This thesis presents the development of a miniaturized, energy-efficient sensor system for real-time quality assessment in crimping tools. The proposed system integrates Hall sensors (TMAG5273) and capacitive sensors (FDC1004) to measure both crimping force and mechanical dislocations, ensuring precise detection of faulty crimps.
The sensor system is designed to be low-cost and highly responsive, capable of capturing mechanical displacements as small as 1-2 mm with 10-bit resolution. The sensors operate at a sampling rate of 50 Hz, making the solution suitable for handheld crimping tools used in industrial settings. Data from the sensors is processed and evaluated to distinguish between good and bad crimps, helping reduce the likelihood of errors in electrical and mechanical connections.
This thesis also explores the integration of the sensor system for improved efficiency and accuracy. The work demonstrates a significant step forward in real-time quality assurance, offering a viable solution for improving manufacturing processes in the cable industry."


