An isolated data acquisition system for high voltage applications

Conference · Tue Oct 01 00:00:00 EDT 1985 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:6112154

Waitz, A; Donaldson, A

This report describes the design and operation of a microcomputer controlled system for acquisition of both analog and binary data within the high voltage stages of a linac modulator. The system is comprised of a microprocessor Controller which communicates with the remote data Acquisition circuits via an optical bus. The bus, which uses a 1 MHz Manchester II format, is configured as a loop, starting at the Controller, daisy-chaining the remote cards and terminating back at the Controller. Upon receiving a linac timing pulse, the Controller sends addressed commands to the individual remote cards and receives data back. It then passes this data to the linac control system through a Multibus connection. Each remote circuit can return 16 binary sense and 7 (12 bit) analog parameters within 270 us. This speed is possible because of a pipelined design where one word is transmitted while another is being converted. A data conversion cycle is initiated when a remote data acquisition card receives the proper command and address from the controller.

• Research Organization: Fermi National Accelerator Laboratory, Batavia, IL
• OSTI ID: 6112154
• Report Number(s): CONF-850504-
• Journal Information: IEEE Trans. Nucl. Sci.; (United States), Vol. NS-32:5; Conference: Particle accelerator conference, Vancouver, Canada, 13 May 1985
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
LINEAR ACCELERATORS
DATA ACQUISITION SYSTEMS
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
DATA PROCESSING
EQUIPMENT INTERFACES
MICROPROCESSORS
ACCELERATORS
CONTROL SYSTEMS
ELECTRONIC CIRCUITS
MICROELECTRONIC CIRCUITS
PROCESSING
430100* - Particle Accelerators- Design
Development
& Operation