JPH0525288B
PURPOSE:To obtain a small-sized detector having high reliability regardless of the kind of a container receiving an object, by allowing an electromagnetic wave or ultrasonic wave variable in an expanse angle to be incident to an object and detecting the state of the object on the basis of the intens...
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| creator | HORIGUCHI CHOHARU |
| description | PURPOSE:To obtain a small-sized detector having high reliability regardless of the kind of a container receiving an object, by allowing an electromagnetic wave or ultrasonic wave variable in an expanse angle to be incident to an object and detecting the state of the object on the basis of the intensity of the reflected wave from the object. CONSTITUTION:When an electromagnetic wave is allowed to be vertically incident to the surface of a liquid 4 from a light source 2, the intensity I of the reflected light thereof is inversely proportional to the square of the distance L up to the surface of the liquid 4. By this, the reflected light incident to a photodetector 6 is taken out as a photocurrent to be converted to signal voltage and, when this voltage value coincides with a predetermined reference voltage value, it is judged that the distance L becomes a predetermined reference distance L0 and it can be decided that the liquid in a tank becomes a predetermined residual amount. Further, a light projecting lens 3 is moved with respect to the light source 2 and, by regulating the interval (a) between both of them, the expanse angle theta of emitted luminous flux can be set arbitrarily. By this, the intensity I of the reflected light can be made same regardless of the kind of the tank and, when the voltage value becomes the predetermined reference voltage value, it can be judged that the residual amount of the liquid becomes a predetermined value, without regulating the reference voltage value at all. |
| format | Patent |
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CONSTITUTION:When an electromagnetic wave is allowed to be vertically incident to the surface of a liquid 4 from a light source 2, the intensity I of the reflected light thereof is inversely proportional to the square of the distance L up to the surface of the liquid 4. By this, the reflected light incident to a photodetector 6 is taken out as a photocurrent to be converted to signal voltage and, when this voltage value coincides with a predetermined reference voltage value, it is judged that the distance L becomes a predetermined reference distance L0 and it can be decided that the liquid in a tank becomes a predetermined residual amount. Further, a light projecting lens 3 is moved with respect to the light source 2 and, by regulating the interval (a) between both of them, the expanse angle theta of emitted luminous flux can be set arbitrarily. By this, the intensity I of the reflected light can be made same regardless of the kind of the tank and, when the voltage value becomes the predetermined reference voltage value, it can be judged that the residual amount of the liquid becomes a predetermined value, without regulating the reference voltage value at all.</description><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ; ELECTRICITY ; GYROSCOPIC INSTRUMENTS ; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT ; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES ; MEASURING ; MEASURING DISTANCES, LEVELS OR BEARINGS ; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK ; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL ; METERING BY VOLUME ; NAVIGATION ; PHOTOGRAMMETRY OR VIDEOGRAMMETRY ; PHYSICS ; SEMICONDUCTOR DEVICES ; SURVEYING ; TESTING</subject><creationdate>1993</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930412&DB=EPODOC&CC=JP&NR=H0525288B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19930412&DB=EPODOC&CC=JP&NR=H0525288B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HORIGUCHI CHOHARU</creatorcontrib><title>JPH0525288B</title><description>PURPOSE:To obtain a small-sized detector having high reliability regardless of the kind of a container receiving an object, by allowing an electromagnetic wave or ultrasonic wave variable in an expanse angle to be incident to an object and detecting the state of the object on the basis of the intensity of the reflected wave from the object. CONSTITUTION:When an electromagnetic wave is allowed to be vertically incident to the surface of a liquid 4 from a light source 2, the intensity I of the reflected light thereof is inversely proportional to the square of the distance L up to the surface of the liquid 4. By this, the reflected light incident to a photodetector 6 is taken out as a photocurrent to be converted to signal voltage and, when this voltage value coincides with a predetermined reference voltage value, it is judged that the distance L becomes a predetermined reference distance L0 and it can be decided that the liquid in a tank becomes a predetermined residual amount. Further, a light projecting lens 3 is moved with respect to the light source 2 and, by regulating the interval (a) between both of them, the expanse angle theta of emitted luminous flux can be set arbitrarily. By this, the intensity I of the reflected light can be made same regardless of the kind of the tank and, when the voltage value becomes the predetermined reference voltage value, it can be judged that the residual amount of the liquid becomes a predetermined value, without regulating the reference voltage value at all.</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</subject><subject>ELECTRICITY</subject><subject>GYROSCOPIC INSTRUMENTS</subject><subject>INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT</subject><subject>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</subject><subject>MEASURING</subject><subject>MEASURING DISTANCES, LEVELS OR BEARINGS</subject><subject>MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK</subject><subject>MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL</subject><subject>METERING BY VOLUME</subject><subject>NAVIGATION</subject><subject>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</subject><subject>PHYSICS</subject><subject>SEMICONDUCTOR DEVICES</subject><subject>SURVEYING</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1993</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZOD2CvAwMDUyNbKwcOJhYE1LzClO5YXS3AxKbq4hzh66qQX58anFBYnJqXmpJfFIOpyMjIlSBAB9QhxO</recordid><startdate>19930412</startdate><enddate>19930412</enddate><creator>HORIGUCHI CHOHARU</creator><scope>EVB</scope></search><sort><creationdate>19930412</creationdate><title>JPH0525288B</title><author>HORIGUCHI CHOHARU</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH0525288BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1993</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR</topic><topic>ELECTRICITY</topic><topic>GYROSCOPIC INSTRUMENTS</topic><topic>INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT</topic><topic>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</topic><topic>MEASURING</topic><topic>MEASURING DISTANCES, LEVELS OR BEARINGS</topic><topic>MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK</topic><topic>MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL</topic><topic>METERING BY VOLUME</topic><topic>NAVIGATION</topic><topic>PHOTOGRAMMETRY OR VIDEOGRAMMETRY</topic><topic>PHYSICS</topic><topic>SEMICONDUCTOR DEVICES</topic><topic>SURVEYING</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>HORIGUCHI CHOHARU</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HORIGUCHI CHOHARU</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>JPH0525288B</title><date>1993-04-12</date><risdate>1993</risdate><abstract>PURPOSE:To obtain a small-sized detector having high reliability regardless of the kind of a container receiving an object, by allowing an electromagnetic wave or ultrasonic wave variable in an expanse angle to be incident to an object and detecting the state of the object on the basis of the intensity of the reflected wave from the object. CONSTITUTION:When an electromagnetic wave is allowed to be vertically incident to the surface of a liquid 4 from a light source 2, the intensity I of the reflected light thereof is inversely proportional to the square of the distance L up to the surface of the liquid 4. By this, the reflected light incident to a photodetector 6 is taken out as a photocurrent to be converted to signal voltage and, when this voltage value coincides with a predetermined reference voltage value, it is judged that the distance L becomes a predetermined reference distance L0 and it can be decided that the liquid in a tank becomes a predetermined residual amount. Further, a light projecting lens 3 is moved with respect to the light source 2 and, by regulating the interval (a) between both of them, the expanse angle theta of emitted luminous flux can be set arbitrarily. By this, the intensity I of the reflected light can be made same regardless of the kind of the tank and, when the voltage value becomes the predetermined reference voltage value, it can be judged that the residual amount of the liquid becomes a predetermined value, without regulating the reference voltage value at all.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY GYROSCOPIC INSTRUMENTS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS SEMICONDUCTOR DEVICES SURVEYING TESTING |
| title | JPH0525288B |
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