GB931527A - Apparatus for sensing of hot moving material - Google Patents
Apparatus for sensing of hot moving materialInfo
- Publication number
- GB931527A GB931527A GB465761A GB465761A GB931527A GB 931527 A GB931527 A GB 931527A GB 465761 A GB465761 A GB 465761A GB 465761 A GB465761 A GB 465761A GB 931527 A GB931527 A GB 931527A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cell
- capacitor
- resistor
- radiation
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 title abstract 9
- 230000005855 radiation Effects 0.000 abstract 6
- 239000003990 capacitor Substances 0.000 abstract 5
- 239000012809 cooling fluid Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 230000001052 transient effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/028—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring lateral position of a boundary of the object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/12—End of product
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Abstract
931,527. Photo-electric control devices. M. C. PFISTER. Feb. 8, 1961 [Feb. 20, 1960], No. 4657/61. Class 40 (3). In apparatus for signifying the presence or absence of a material in a zone through which the material is moved longitudinally and which is wider than the width of the material, a radiation focusing device repeatedly scans the zone in a direction transverse to the direction of movement of the material and focuses radiation emanating from the material on to a radiation sensitive cell once during each scanning movement, and an electrical receiver connected between the cell and a switching device responds to the presence in the output of the cell of electrical impulses, each significant of the incidence of focused radiation thereon, by switching the switching device from a first state to a second state so signifying the presence of material in the zone and from which the switching device is arranged to be returned to the first state by the absence of the electrical pulses in the output from the cell. A prior art statement refers to known apparatus in which a lead sulphide cell is followed by an electrical differentiating network. The signal from the apparatus may be used to operate a deflector or shears, or to initiate an operation in an electronically controlled rolling mill. The invention is stated to obviate false operation due to transient departures of the material from the field of view and due to the presence of regions in the material of low radiation level (" black " regions). In the embodiment, a sensing head comprises a revolving reflector 2 having concave side walls each forming a mirror to focus radiation emitted by horizontallytravelling hot wire 5 on to a photo-conductive cell 4; air or water cooling fluid is led through pipe 6. The cell impulses are applied to a cathode-follower 8, in the sensing head, which feeds a pre-amplifier 11 and thence a valve 15 ; a capacitor 16 charges through a resistor 17 and each time valve 15 conducts the capacitor is discharged. Thus each positive pulse at the input of valve 15 produces the same sawtooth wave shape irrespective of pulse amplitude and duration within wide limits. The sawtooth waveform is coupled to diode-connected triode 22 via a capacitor 21, and each time the diode cuts off a constant charging current flows to capacitor 21 through resistor 33 to generate a positive bias voltage which is applied to the control grid of a pentode 23; the control grid is also connected via resistor 33 to a voltage derived from a rectifier bridge 31. It is arranged that only small increases in positive bias, during flow of intermittent charging current through capacitor 21, are sufficient to increase anode current sufficiently in valve 23 to cause operation of a relay 24; a resistor 38 is thereby introduced into the screen grid circuit to so reduce anode current than any further fall thereof, caused by removal of bias generated across resistor 33, ensures de-energization of the relay. A signal lamp 27 is thereby deenergized and a control circuit to terminal 102 is made. The polygonal mirror may be replaced by a vibrating mirror or a lens drum.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP0024479 | 1960-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB931527A true GB931527A (en) | 1963-07-17 |
Family
ID=7369680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB465761A Expired GB931527A (en) | 1960-02-20 | 1961-02-08 | Apparatus for sensing of hot moving material |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH388229A (en) |
FR (1) | FR1280424A (en) |
GB (1) | GB931527A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2447889A1 (en) * | 1979-02-06 | 1980-08-29 | Owens Illinois Inc | DEVICE FOR DETECTING VERY HOT GLASS DROPS IN A GLASS ARTICLE FORMING MACHINE |
CN114669655A (en) * | 2022-05-31 | 2022-06-28 | 四川跃航智能设备制造有限公司 | Constructional steel member stamping device and controlling means thereof |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8801818A (en) * | 1988-07-18 | 1990-02-16 | Hoogovens Groep Bv | Device and method for rolling out a series of billets. |
DE102022126635A1 (en) * | 2022-10-13 | 2024-04-18 | Maag Germany Gmbh | Method and device for contactless temperature determination of a conveyed material flow and granulating device with such a contactless temperature determination device |
-
1961
- 1961-02-02 CH CH124461A patent/CH388229A/en unknown
- 1961-02-08 GB GB465761A patent/GB931527A/en not_active Expired
- 1961-02-17 FR FR7088A patent/FR1280424A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2447889A1 (en) * | 1979-02-06 | 1980-08-29 | Owens Illinois Inc | DEVICE FOR DETECTING VERY HOT GLASS DROPS IN A GLASS ARTICLE FORMING MACHINE |
CN114669655A (en) * | 2022-05-31 | 2022-06-28 | 四川跃航智能设备制造有限公司 | Constructional steel member stamping device and controlling means thereof |
Also Published As
Publication number | Publication date |
---|---|
FR1280424A (en) | 1961-12-29 |
DE1677159A1 (en) | 1970-12-03 |
CH388229A (en) | 1965-02-28 |
DE1677159B2 (en) | 1972-11-09 |
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