Title:
DATA COLLECTOR
Document Type and Number:
Japanese Patent JPS57127294
Kind Code:
A
Abstract:
Apparatus for gathering data about a plurality of chemical or physical conditions, e.g. on industrial plants, utilizes a plurality of passive optical sensors. Light for the sensors is provided by a common broadband source, and distributed by an optical fiber from which light of a selected color is withdrawn for each sensor in turn, the color selected for each sensor being different from that selected for the other sensors. Each color is modified by its respective sensor as a function of changes in the conditions applied to the sensor, and all the modified colors are conveyed along a common data bus to be demultiplexed and the data displayed. The colors may be supplied by the data bus to detection means simultaneously or sequentially. Passive optical sensors avoid electrical interference and incendiary risks due to electrical sparking, and color multiplexing avoids difficulties associated with other forms of multiplexing in plant environments.
More Like This:
| JPH0686152 | [Name of device] Measurement data collection device |
| JP6824565 | Measurement system |
| JP2006235967 | CRIME PREVENTION SYSTEM |
Inventors:
JIEEMUZU RICHIYAADO HARUSARU
ROBAATO TOOMASU MAREI
ROBAATO TOOMASU MAREI
Application Number:
JP20450581A
Publication Date:
August 07, 1982
Filing Date:
December 17, 1981
Export Citation:
Assignee:
ICI LTD
International Classes:
G08C15/00; H04B10/213; H04B10/22; H04J14/02; H04B10/00; H04J99/00; (IPC1-7): G08C15/00; G08C23/00; H04B9/00
Domestic Patent References:
| JPS5417044A | 1979-02-08 | |||
| JPS5542453A | 1980-03-25 |