Title:
LIVING MATTER SLUDGE MONITORING DEVICE
Document Type and Number:
Japanese Patent JP3912535
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a living matter sludge monitoring device capable of measuring and monitoring automatically and continuously the existence state of the living matter sludge in a water purification device using the living matter sludge.
SOLUTION: This device comprises a sensor for outputting a detection signal corresponding to the concentration of living matter sludge slurry in water to be measured stirred uniformly, an operation means for acquiring at least one data of a means for determining average data determined by averaging the level of the detection signal outputted from the sensor at prescribed time intervals, a means for determining amplification data shown by the difference between the maximum value and the minimum value of the detection signal, a means for determining signal data of an envelope acquired by taking out the envelope of the detection signal, and a means for determining the amplification data of the signal of the envelope shown by the difference between the maximum value and the minimum value of the signal of the envelope, and a determination part for determining the state of the living matter sludge in the water to be measured from the data determined by the operation means.
Inventors:
Makoto Umura
Shigeki Sawada
Nobuaki Nagao
Shigeki Sawada
Nobuaki Nagao
Application Number:
JP2003112782A
Publication Date:
May 09, 2007
Filing Date:
April 17, 2003
Export Citation:
Assignee:
Kurita Water Industries Ltd.
International Classes:
G01N15/06; C02F3/12; G01N29/02; G01N21/59; (IPC1-7): G01N15/06; C02F3/12; G01N21/59; G01N29/02
Domestic Patent References:
| JP1199695A | ||||
| JP61212392A | ||||
| JP6028453A | ||||
| JP10239290A | ||||
| JP2002186956A |
Foreign References:
| WO1991000993A1 |
Attorney, Agent or Firm:
Koji Nagato
Junichi Yamanaka
Junichi Yamanaka