Title:
【発明の名称】気化器パネルの監視方法
Document Type and Number:
Japanese Patent JP3075382
Kind Code:
B2
Abstract:
PURPOSE:To automatize decision of the fault of water film prick by comparing a temperature of each part of a temperature picture picked up by an infrared ray camera with an ice depositted temperature for each pixel and to prevent the deformation of an evaporation panel caused by the fault. CONSTITUTION:A processing means 9 applies pre-processing to a temperature picture of an evaporator panel 5 obtained by an infrared ray camera 7 to obtain a temperature picture in a predetermined monitor range. Then a temperature of each part of the temperature picture is compared with an ice deposition temperature for each pixel to obtain the number of pixels whose temperature is less than the ice deposition temperature. Then the obtained number of pixels is compared with a setting number to decide a water film prick fault. Thus, the decision of the water film prick fault on the evaporator panel 5 is not affected by a change in a sea water temperature on each season or change in an LNG flow rate and high speed processing is attained by a simple device. Furthermore, when a setting temperature compared with a temperature of the pixel is a temperature adding a predetermined temperature difference to the ice deposition temperature, production of ice deposition is detected just before to raise an alarm early.
Inventors:
Takaaki Tanaka
Masahiro Arakawa
Ichiro Kasama
Ikko Nukui
Takayoshi Yamamoto
Shigeru Kamada
Tatsuo Yoshioka
Masahiro Arakawa
Ichiro Kasama
Ikko Nukui
Takayoshi Yamamoto
Shigeru Kamada
Tatsuo Yoshioka
Application Number:
JP34200092A
Publication Date:
August 14, 2000
Filing Date:
December 22, 1992
Export Citation:
Assignee:
東京瓦斯株式会社
バブコック日立株式会社
株式会社日立製作所
バブコック日立株式会社
株式会社日立製作所
International Classes:
G08B21/00; H04N5/225; H04N7/18; (IPC1-7): H04N7/18; G08B21/00; H04N5/225
Domestic Patent References:
| JP477599A | ||||
| JP3162188A |
Attorney, Agent or Firm:
Koji Misaki