Mustafa - Consultant ASSEMBLEUR

CONSULTANT

SENSOR PROJECT

Electronics Development Engineer
Context
 Corac is a technology and intellectual property company with expertise in the turbo machinery sector (********). Corac was planning to use non-contact proximity sensors for their Orbit Sensor to electronically monitor the displacement of the motor shaft.

Objectives
 The objectives were, firstly, to evaluate the suitability of different non-contact proximity sensors\technologies that can be used for the Orbit Sensor. Then, to carry out a design study, and finally a design/simulation of the modelling of the probe.
Results & Benefits
 A Market Research study report of non-contact displacement sensors was supplied. FEMM simulations has been performed and a finite element design study to optimise the Orbit Sensor was supplied

CURRENT TRANSDUCERS

Electronics Development Engineer
Context
 Corac was planning to build a Sensor Card for monitoring the current outputs from insulated gate bipolar transistor (IGBT) H-Bridges to the compressors motors. To that end, two Current Transducer Evaluation Boards had been purchased to be evaluated.

Objectives
 Corac’s objectives were, firstly, to define the design requirements for the Sensor Card, and secondly to evaluate which Current Transducer was the most suitable for measuring the current flowing in the motor winding.Results & Benefits
 A report about the requirements specification of the Sensor Card was supplied. A report about the performance of the Evaluations Boards was supplied. Finally, a design of the Sensor Card was submitted.

PHD PROJECT

Context
 The commercial tools available for MicroElectroMechanical Systems (MEMS) design such as MEMSCAP and ANSYS are not efficient yet to detect at the design stage, potential faults and defects within the manufacturing process. One cure is to implement simulation driven product development cycle to avoid the need of physical prototypes.
Objectives
 To develop a software package based on simulation driven development cycle.

Approach
 Demonstrate the usefulness of haptic sensing technology for MEMS
 Find an appropriate method for modelling MEMS and to reduce the computation cost.
 Demonstrate the validity of the modelling method with MEMS components
 I demonstrated that it was possible to do real-time simulation by implementing Cosserat theory into haptic sensing technology.
 Analysis functional, UML diagram
 For real-time simulation, optimized algorithms have been developed to meet the update requirements of the haptic system which consists of two loops: i) the haptic loop (also known as real time loop) which is updated at 1 KHz to avoid force artefacts since we are able to detect discrete event at less than 1 KHz and ii) the display loop (known as the scene graph loop) which is updated at 30 Hz since the Human Visual System (HVS) has a flicker fusion frequency around 30-60 Hz.
 Testing/Debugging
 I also developed a User-Friendly interface (C++) where cantilever, microbridge or membrane (plate) can be selected and enabling the user to interact with their MEMS components with force feedback rendering.
 The program was about 15 000 lines
Results & Benefits
 First one to investigate this in my field.
 A new approach has been developed for modelling MEMS components based on Cosserat theory which reduced the computation time and therefore enables real-time simulation.
 13 International Papers/Journals have been published

Objectives
 The objective of this project was to compare the performance, the efficiency and the reliability of different devices/sensors which can provide similar functions using different technologies. In this project, the analysis of the different devices was focused mainly for robot vehicle applications, and finally a small on board processing was also achieved with different boards built on it.

Approach
 Study the sensors
 Evaluate the performance of different sensors, e.g. ultrasonic sensors vs. infrared sensors to detect objects and avoid them.
 Integrate the sensors on a robot
 Testing/debuggingResults & Benefits
 Two vehicle robots have been built
 MSc dissertation submitted
 I completed this project successfully, marks obtained 75%

Objectives
 The aim of this project was to build a robot which was able to detect object, organise the search operation (to detect object) and create an on-screen map. A controlling computer (an IBM PC + serial I/O + ZComm) was used to connect to the vehicle via an umbilical cable.

Approach
 Integrate reflective object sensors to detect wheel position and to provide position sensing
 Write an algorithm to organise the search operation
 Program the controlling computer to send and receive data from the robot and to create an on-screen map
 Testing/Debugging

Objective
 The objective of the coursework was to design an FIR filter to isolate a single Dual Tone Multi-Frequency (DTMF)

Approach
 Write a MATLAB script that will generate a DTMF test signal representing a seven digit telephone number
 Design a Bandpass FIR Filter Design; using MATLAB the Bandpass FIR Filter coefficients was generated
 Testing the FIR Bandpass Filter using MATLAB
 Testing the Real-Time Implementation of a Bandpass FIR Filter using the C6711 DSK

Technical Environment
 Code Composer Studio (CCSTUDIO)
 C6711 DSK
 Matlab
 Oscilloscope
 Excel

Results & Benefits
 Report about the design of the FIR filter has been supplied
 I completed this project successfully, marks obtained 85%,

Objectives
 The aims were to design a microprocessor-based system. The objectives was to design, built, test and commission a 68HC001 microprocessor-based system, to manage a small team, plan a medium size team project, write an appropriate system software in 68HC001 assembly language and use appropriate test equipment.

 The network was intended to represent part of a car management unit, the system comprised three nodes and the data was to be transferred around the network from one node to the next node using asynchronous serial communications. This project was undertaken in a group of three students.
Approach

My responsibilities were to:
 Design/Build the serial communication board
 Write the appropriate software for reception and transmission of the data
 Program in VHDL the PLD (Programmable Logic Device)
 Test the serial communication board with the memory and interface boards