1. EUDET MEASUREMENT SYSTEMS We distinguish 2 systems in EUDET: A measurement test bench based on : –Electric motor from BALDOR for motion. –B-sensors and ARM MCU for measurements. A permanent measurement system, based also on 2 b-sensors and ARM MCU.

2. EUDET Measurement System OVERVIEW

3. EUDET Applications There are four applications for EUDET: 1.Measurement Bench Application. 2.Permanent Acquisition Application. 3.Motion Control Application. 4.ARM MCU Application

4. Measurement Bench Application Written in C (console Application), running on rack PC under Win XP Communicates with both motion control system BALDOR (via USB) and ARM MCU(via RS232). Allows to set measurements steps by filling a formatted text file. Allows to set number of b-sensors involved in measurement by filling a formatted text file Acquires B-sensors settings, B-sensors Hall voltages and temperature for each reached position. Generates a formatted text file for each measurement session. Then this file is processed to get Magnetic Field values from voltages values for each measurement position.

5. Permanent Acquisition Application Written in C, (console Application) running on a PC from DESY, under Win XP. Is inherited from Measurement Bench application concerning Hall voltages, B-sensors settings… Based on 2 B-sensors installed in key-locations in EUDET Allows to set Acquisition period. Generates formatted measurement file. This file must be processed to get Magnetic Field Values from voltages values.

6. Motion Control Application Written in Basic with Baldor’s Mint environment. Communicates with Measurement Bench Application via USB protocol. Does homing (sets encoder value for a physical known position). Allows Relative and Absolute motions, with an accuracy inferior to 0.2 mm, based of encoder signal. Implements security layer via end-switches management as special events.

7. ARM MCU Application Written in C in KEIL environment. Communicates with Measurement Bench Application or Permanent Acquisition Application via RS232. Addresses B-sensors, Initializes them, sets registers in ADC, gets Hall voltages and temperatures via SPI from ADC.

8. For the future…. Add GUI layer for Permanent Acquisition Application :

9. For the future…. Add a bootloader in ARM MCU. It allows to update firmware in ARM via RS232, USB, without using expensive JTAG Programmer. Allows to load simply.hex file for EUDET users, sent by e-mail by us.