Project Descriptions
GalleriaProä Film Printer, Mirus Industries Corporation:
Complete electronics and software design for a high resolution (8000 pixel x 5300 pixel x 24 bit color) desktop film imaging system. System connects to high-end PC and Macintosh computers via parallel or SCSI port. Digital electronics includes MC68340 microprocessor programmed in assembly language, and Xilinx FPGAs configured to provide high speed processing in the digital data path for precise pixel timing. System configuration parameters are controlled via D/A converters and saves in battery backed RAM . Analog electronics includes precision horizontal and vertical yoke drivers and brightness modulation circuit, dynamic focus correction, pin-cushion and rotation correction, and high stability, high voltage CRT power supplies.Flow-Logicä Net Weigher, Upper Limits Corporation: Firmware design and electronics integration for high speed net weigher. Firmware written in Borland C++ for PC compatible 486 based embedded system using TICS multitasking kernel. Electronics package consists of OEM and custom PC-104 boards as well as custom strain gage amplifier and A/D subsystem. System provides simultaneous closed-loop control of up to 36 channels of vibrator power with accelerometer feedback, 12 channels of 20 bit analog input for net weight, 48 digital I/O channels, and a touch-screen LCD control panel based graphical user interface. Provides up to 180 weighments per minute to accuracy of ± 0.1%.
Two Axis DC Position Servo and strain gauge amplifier, electronics and firmware design. Closed loop position control system featuring two optically isolated 100W PWM power supplies controlled by an MC68HC11 microcontroller. Position feedback via optical encoder on each axis. Loop closed in firmware using digital lead/lag compensation. Includes high gain low noise strain gauge amplifier with firmware controlled gain. Firmware written in 68HC11 assembler.
SupraVITä and VIT-Mateä Ophthalmic Surgical Instruments, MID Laboratories, Inc.: Firmware design for Intel 8052 based surgical instrument used in cataract and retinal surgery. Provides closed-loop control of several surgical hand-pieces including ultrasonic cutting tool, miniaturized probes and scissors, aspiration and irrigation pumps and ultrasound power. Firmware written in C for multiple 8052 processors under proprietary RTOS.
Implantable Defibrillator, firmware design and electronics support. Instrument used to detect and correct tachycardia and ventricular fibrillation in cardiac patients. Firmware written in assembly language on 8-bit microprocessor core embedded in custom IC. Software routines running on breadboard tested electronics design prior to implementation in custom IC. Designed to stringent software quality control requirements for FDA approval.
Blood Oxygen Saturation Monitor, support electronics design. Designed around Nellcor MP203 oxygen saturation module, support electronics used 80C51 microcontroller. Designed for battery operation, with low-power CMOS electronics throughout.