Knowledge-based fault detection and diagnosis in flow-injection analysis
β Scribed by Jens Brandt; Bernd Hitzmann
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 854 KB
- Volume
- 291
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
β¦ Synopsis
The reliable operation of flow-injection analysis systems (FI systems) demands a high degree of knowledge and experience. This a priori knowledge is of great importance, especially for a fast detection and diagnosis of faults. Transferring it into the form of a knowledge-based system and combining it with information received on-line from the recorded detector signal enables automatic operational supervision of FI systems. This contribution presents a real-time knowledge-based system for the supervision of FI systems applied in on-line bioprocess monitoring. The special conditions of real-time systems are explained and the basic structure of the knowledge base is illustrated. Examples of typical faults of the FI system are given to explain how symbolic knowledge processing can be combined with numerical analysis of data to perform a fast and reliable fault detection and fault diagnosis.
π SIMILAR VOLUMES
An ammonium detection system using ion-selective electrodes (ISEs) in flow-injection analysis (FIA) is described. Because of the low selectivity of the nonactin ammonium selective electrode toward some common ions, notably potassium, different selectivity enhancement techniques have been examined. A
## Abstract A flow injection (FI) method is reported for the determination of lβcysteine, based on its enhancement on chemiluminescence (CL) emission of luminol oxidized by sodium persulphate in alkaline solution. The calibration graph was linear over the range 1.0Β ΓΒ 10^β9^β5.0Β ΓΒ 10^β7^ mol/L (__r_
Many fluorescence immunoassays have indifferent limits of detection because of the background signals from biological samples. Scattered light contributes to this background, but can be eliminated by exciting conventional fluorescent labels via chemiluminescence reactions involving bi.s(2,4,6-trichl
An electrochemical detector based on a polyaniline conducting polymer chemically modified electrode (PAn CME) was developed for use in bow-injection analysis and ion chromato~aphy. Iodide, bromide, thiocyanate and G&Jsulphate are detected by using ion chromatography with a PAn CME electrochemical de