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1. WO2002021107 - DEPOSIT DETECTOR AND CONTROLLER USING THE DETECTOR

Publication Number WO/2002/021107
Publication Date 14.03.2002
International Application No. PCT/JP2001/007809
International Filing Date 07.09.2001
Chapter 2 Demand Filed 28.01.2002
IPC
B60S 1/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
1Cleaning of vehicles
02Cleaning windscreens, windows, or optical devices
04Wipers or the like, e.g. scrapers
06characterised by the drive
08electrically driven
G01N 21/43 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
41Refractivity; Phase-affecting properties, e.g. optical path length
43by measuring critical angle
G01N 21/47 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
G01N 21/55 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
55Specular reflectivity
G01N 21/94 2006.01
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
84Systems specially adapted for particular applications
88Investigating the presence of flaws, defects or contamination
94Investigating contamination, e.g. dust
CPC
B60S 1/0818
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
1Cleaning of vehicles
02Cleaning windscreens, windows or optical devices
04Wipers or the like, e.g. scrapers
06characterised by the drive
08electrically driven
0818including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
B60S 1/0833
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
SSERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
1Cleaning of vehicles
02Cleaning windscreens, windows or optical devices
04Wipers or the like, e.g. scrapers
06characterised by the drive
08electrically driven
0818including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
0822characterized by the arrangement or type of detection means
0833Optical rain sensor
G01N 2021/435
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
41Refractivity; Phase-affecting properties, e.g. optical path length
43by measuring critical angle
435Sensing drops on the contact surface
G01N 2021/556
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
55Specular reflectivity
556Measuring separately scattering and specular
G01N 2021/945
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
84Systems specially adapted for particular applications
88Investigating the presence of flaws or contamination
94Investigating contamination, e.g. dust
945Liquid or solid deposits of macroscopic size on surfaces, e.g. drops, films, or clustered contaminants
G01N 21/43
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
41Refractivity; Phase-affecting properties, e.g. optical path length
43by measuring critical angle
Applicants
  • NIPPON SHEET GLASS CO., LTD. [JP]/[JP] (AllExceptUS)
  • KOBAYASHI, Fumitoshi [JP]/[JP] (UsOnly)
  • TSUNETOMO, Keiji [JP]/[JP] (UsOnly)
  • IMANISHI, Hideki [JP]/[JP] (UsOnly)
  • YOSHIDA, Harunobu [JP]/[JP] (UsOnly)
  • WAKISAKA, Masahide [JP]/[JP] (UsOnly)
  • TOKUDA, Tatsumi [JP]/[JP] (UsOnly)
Inventors
  • KOBAYASHI, Fumitoshi
  • TSUNETOMO, Keiji
  • IMANISHI, Hideki
  • YOSHIDA, Harunobu
  • WAKISAKA, Masahide
  • TOKUDA, Tatsumi
Agents
  • IKEUCHI, Hiroyuki
Priority Data
2000-27396308.09.2000JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) DEPOSIT DETECTOR AND CONTROLLER USING THE DETECTOR
(FR) DETECTEUR DE DEPOT ET DISPOSITIF DE COMMANDE COMPRENANT CE DETECTEUR
Abstract
(EN)
A deposit detector capable of estimating the presence or absence of the deposit adhered to a detected surface, type of the deposit, and the state of the deposit and a controller using the detector, wherein a light beam through the detected surface is focused by a lens and received by a light receiving element part formed of a plurality of micro light receiving elements disposed parallel with each other, the total reflection light beams from the detected surface are received by the light receiving element part in the deposit detection mode, each element is disposed at such an angle that the light beam is totally reflected when deposit is absent and the total reflection conditions are not satisfied when the deposit is present, the scattered light beams from the detected surface are received by the light receiving element part in the light scattering deposit detection mode, the detection signal levels of the micro light receiving elements are joined to each other according to the arrangement of the micro light receiving elements to provide a signal pattern, and the increased portion or lowered portion of the signal pattern produced according to the presence or absence of deposit and a state difference are analyzed to estimate the type and state of deposit such as rain drop, slurry, clouding, and icing.
(FR)
La présente invention concerne un détecteur de dépôt qui est capable d'estimer la présence ou l'absence d'un dépôt qui adhère sur une surface détectée, le type du dépôt et l'état du dépôt ainsi qu'un dispositif de commande comprenant le détecteur. Dans ce système, un faisceau de lumière traversant la surface détectée est focalisé par une lentille et reçu par une partie de réception de la lumière qui est formée d'une pluralité de micro-éléments de réception de la lumière disposés parallèlement les uns aux autres, les faisceaux de lumière de réflexion totale renvoyés par la surface détectée sont reçus par la partie de réception de la lumière dans le mode de détection de dépôt, chaque élément étant disposé suivant un angle tel que le faisceau de lumière est entièrement réfléchi lorsque le dépôt est absent et que les conditions de réflexion totale ne sont pas satisfaites lorsque le dépôt est présent; les faisceaux de lumière diffusés provenant de la surface détectée étant reçus par la partie de réception de la lumière dans le mode de détection de dépôt par diffusion de lumière. Dans ce système, les niveaux du signal de détection des micro-éléments de réception de la lumière sont reliés les uns aux autres en fonction de la disposition des micro-éléments de réception de la lumière pour produire une forme de signal et la partie augmentée ou réduite de la forme du signal produite suivant qu'un dépôt existe ou non et selon la différence d'état sont analysés pour estimer le type et l'état du dépôt lequel peut être par exemple, de la pluie, de la boue, du givre ou de la glace.
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