DK150837B - PULSE DOES - Google Patents
PULSE DOES Download PDFInfo
- Publication number
- DK150837B DK150837B DK291377AA DK291377A DK150837B DK 150837 B DK150837 B DK 150837B DK 291377A A DK291377A A DK 291377AA DK 291377 A DK291377 A DK 291377A DK 150837 B DK150837 B DK 150837B
- Authority
- DK
- Denmark
- Prior art keywords
- light
- emitting means
- light emitting
- screen
- sensitive
- Prior art date
Links
- 230000002779 inactivation Effects 0.000 claims 2
- 230000003213 activating effect Effects 0.000 claims 1
- 230000004913 activation Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000002834 transmittance Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
- G01F15/063—Indicating or recording devices for remote indication using electrical means
-
- 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
- G01D5/32—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 with attenuation or whole or partial obturation of beams of light
- G01D5/34—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 with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
- G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells
- G01G23/37—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting
- G01G23/375—Indicating the weight by electrical means, e.g. using photoelectric cells involving digital counting during the movement of a coded element
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/22—Analogue/digital converters pattern-reading type
- H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
- H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
- H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental
- H03M1/303—Circuits or methods for processing the quadrature signals
- H03M1/305—Circuits or methods for processing the quadrature signals for detecting the direction of movement
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/60—Analogue/digital converters with intermediate conversion to frequency of pulses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Optical Transform (AREA)
- Measuring Volume Flow (AREA)
- Radiation-Therapy Devices (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Fire-Detection Mechanisms (AREA)
Description
i 150837in 150837
Opfindelsen angår en impulsgiver af den i krav l's indledning angivne art.The invention relates to an impulse generator of the kind specified in the preamble of claim 1.
Fotoelektriske impulsgivere benyttes i mange forbindelser til drift af binære tælleværker til ved hjælp af måle-5 organer at indikere målte kvantiteter, såsom vægt og rum fang, og til indikering af prisen af den målte kvantitet. Impulsgiverne er imidlertid mekanisk koblet til måleanordningerne, hvilken kobling overfører vibrationer fra drivorganer, såsom pumper, stempler, motorer og ineffek-10 tive spærreorganer til impulsgiveren, hvilke vibrationer ved f.eks. afbrydelse af impulsgiveren får denne til at passere sine tilslutnings- og afbrydelsesstillinger og derigennem fortsætte med at afgive impulser, hvilket medfører fejlindikering på tælleværket.Photoelectric pulse sensors are used in many connections for the operation of binary counting devices to indicate measured quantities, such as weight and space, by means of measuring means, and to indicate the price of the measured quantity. However, the pulse sensors are mechanically coupled to the measuring devices, which switch transmits vibrations from drive means such as pumps, pistons, motors and ineffective locking means to the pulse sensor, which vibrations at e.g. interrupting the encoder causes it to pass through its connection and interrupt positions and thereby continue to emit impulses, which causes error indication on the counter.
15 Opfindelsens formål er at tilvejebringe en impulsgiver, som væsentligt reducerer dette problem.The object of the invention is to provide an impulse generator which substantially reduces this problem.
Formålet er ifølge opfindelsen opnået ved, at den indledningsvis angivne impulsgiver er ejendommelig ved det i krav l's kendetegnende del angivne.The object according to the invention is achieved in that the impulse encoder initially stated is characterized by the characteristic part of claim 1.
20 Opfindelsen skal i det følgende nærmere beskrives med henvisning til tegningen, hvorpå fig. 1 viser en hulskive til en impulsgiver ifølge opfindelsen, og fig. 2 viser et koblingsskema til impulsgiveren.The invention will now be described in more detail with reference to the drawing, in which 1 shows a hollow disc for an impulse sensor according to the invention, and FIG. 2 shows a circuit diagram of the encoder.
25 For enkelheds skyld antages i det følgende, at det be skrevne udførelseseksempel er indrettet til tilsut-ning til en strømningsmåler i et væskeafgivelsessystem med en pumpe, hvorved impulserne fra impulsgiveren kan udnyttes til indikering af den ved hjælp af pumpen 150837 2 afgivne væskes volumen og/eller pris.For the sake of simplicity, it is assumed in the following that the described embodiment is adapted for connection to a flow meter in a liquid delivery system with a pump, whereby the pulses from the impulse can be utilized to indicate the volume of the liquid delivered by the pump 150837 2. / or price.
Impulsgiveren omfatter til dette formål en af lysuigennemtrængeligt materiale bestående cirkulær skive 1, som med en centeråbning 2 skal fastgøres på en ikke vist, ved 5 hjælp af strømningsmåleren roterbar aksel. På kendt måde har skiven 1 en med sin centeråbning koaksial række af identiske ens, ækvidistante huller 3a, som begrænses af stolper 3b i skiven, og er indrettet til at indsættes i et fotoelektrisk aftastningssystem, d.v.s. imel-10 lem et fast, lysemitterende element og et fast, lysfølsomt element, således at hulrækken ligger i niveau med disse elementer. I eksmplet er hullerne 3a firkantede og tilspidser imod skivens centrum.For this purpose, the impulse sensor comprises a circular disc 1 of light-impermeable material which, with a center opening 2, must be secured to a shaft rotatable by means of the flow meter. In known manner, the disc 1 has with its center aperture a coaxial row of identical, equidistant holes 3a, which is limited by posts 3b in the disc, and is adapted to be inserted into a photoelectric sensing system, i.e. In between, a solid, light-emitting element and a fixed, light-sensitive element such that the hollow row is level with these elements. In the example, the holes 3a are square and tapering towards the center of the disc.
Ifølge opfindelsen har skiven 1 en med nævnte hulrække 15 koncentrisk anden række af identisk ens, firkantede og ækvidistante huller 4a, som begrænses af stolper 4b i skiven. I det viste eksempel er den anden hulrække anbragt indenfor den førstnævnte hulrække, og dens huller 4a er i det væsentlige lige brede og i antal lig 20 med, men set i omdrejningsretningen smallere end den første rækkes huller 3a. Symmetriakserne i radial retning for hvert hul 3a og det indenfor beliggende hul 4a ligger på en og samme skiveradie.According to the invention, the disc 1 has a concentric second row of identical, square and equidistant holes 4a with said hole row 15, which is limited by posts 4b in the disc. In the example shown, the second row of holes is positioned within the first mentioned row of holes, and its holes 4a are substantially equal and in number equal to 20, but seen in the direction of rotation narrower than the first row of holes 3a. The axes of symmetry in the radial direction for each hole 3a and the inside hole 4a lie on one and the same radius of slices.
Den anden hulrække fører på samme måde som den første 25 . hulrække til et fotoelektrisk aftastningssystem, d.v.s., at den er indrettet til at placeres imellem og i niveau med et fast, lysemitterende element og et fast, lysfølsomt element.The second row leads in the same way as the first 25. holes for a photoelectric sensing system, i.e., it is arranged to be positioned between and level with a fixed, light-emitting element and a fixed, light-sensitive element.
I fig. 2 vises et koblingsskema for impulsgiveren, hvor hul-30 lerne repræsenteres af punkterede linier 3 og 4. Det til disse huller hørende lysemitterende element, f.eks. en 150837 3 lysdiode, har henvisningsbetegnelserne 5 respektivt 6.In FIG. 2 shows a circuit diagram of the encoder where the holes are represented by dashed lines 3 and 4. The light emitting element of these holes, e.g. a LED, the reference numerals 5 and 6 respectively have.
Det tilsvarende lysfølsomme element 7 respektivt 8, f.eks. en fotodiode, -transistor eller -modstand danner indgange til en forstærker 9 af i og for sig kendt 5 type, f.eks. SIEMENS TCA 105, som har en digital direkte udgang 10 og en digital inverteret udgang 11. Den direkte udgang 10, hvorfra impulserne videreføres til volumen/prisindikatoren, er ved hjælp af en leder 12 forbundet til det lysemitterende element 5, og den in-10 verterede udgang 11 er ved hjælp af en leder 13 forbundet med det lysemitterende element 6. Disse lysemitterende elementer 5 og 6 strømforsynes fra en jævnspændingskilde 14.The corresponding photosensitive element 7 and 8, e.g. a photodiode, transistor or resistor provides inputs to an amplifier 9 of a type known per se, e.g. SIEMENS TCA 105, which has a digital direct output 10 and a digital inverted output 11. The direct output 10, from which the pulses are passed to the volume / price indicator, is connected by means of a conductor 12 to the light emitting element 5, and the in-10 digested output 11 is connected by means of a conductor 13 to the light emitting element 6. These light emitting elements 5 and 6 are supplied from a DC source 14.
Med det lysfølsomme element 7 af en sådan type, som er 15 følsom for overgang fra lys til mørke, d.v.s. fra et hul 3a til en stolpe 3b, og det lysfølsomme element 8 af en sådan type, som er følsom for overgangen fra mørke til lys, d.v.s. fra en stolpe 4b til et hul 4a, bliver impulsgiverens funktion umiddelbart klar og 20 følgende:With the photosensitive element 7 of such type which is sensitive to transition from light to dark, i.e. from a hole 3a to a post 3b, and the photosensitive element 8 of such type which is sensitive to the transition from dark to light, i.e. from a post 4b to a hole 4a, the function of the impulse sensor becomes immediately clear and the following:
Ved svingning af lyset fra hul 3a til stolpe 3b går den direkte udgang 10 fra tilstanden 0 til 1, hvorved denne impuls via lederen 12 inaktiverer det lysemitterende element 5. Den inverterede udgang 11 undergår derved 25 tilstandsændringen 1 til 0 og aktiverer, via lederen 13, det lysemitterende element 6. Elementets 5 inak-tiverede tilstand og elementets 6 aktiverede tilstand varer, indtil lyset fra det lysemitterende element 6 træffer det efterfølgende - i rotationsretningen for 30 skiven 1 - hul 4a i den indre hulrække, hvorved udgangene 10 og 11 underkastes tilstandsændringen 1 til 0 respektivt 0 til 1, således at elementet 5 aktiveres, og elementet 6 inaktiveres, indtil lyset fra det til den ydre hulrække hørende lysemitterende element 5 150837 .By switching the light from hole 3a to pole 3b, the direct output 10 goes from state 0 to 1, whereby this impulse via the conductor 12 inactivates the light-emitting element 5. The inverted output 11 thereby undergoes the state change 1 to 0 and activates, via the conductor 13 , the light-emitting element 6. The inactivated state of the element 5 and the activated state of the element 6 last until the light from the light-emitting element 6 subsequently hits - in the rotational direction of the disc 1 - hole 4a in the inner hole row, whereby the outputs 10 and 11 are subjected. the state change 1 to 0 and 0 to 1, respectively, so that the element 5 is activated and the element 6 is inactivated until the light from the light emitting element 5 associated with the outer cavity.
'4 svinger over overgangen fra hul 3a til stolpe 3b.'4 turns over the transition from hole 3a to post 3b.
Ovennævnte funktionsbeskrivelse angiver umiddelbart, at hvis skiven 1 efter afbrydelse af pumpen får vibrationer f.eks. fra pumpemotoren, således at den i sit 5 plan drejer sig frem og tilbage omkring sin midteraksel, kan den, eftersom lyset fra elementet 5 svinger over et hul 3a til nærmeste stolpe 3b, drej'e sig i vinkelområdet a, d.v.s. vinkelområdet, som begrænses af en stolpe 4b, uden at nogen impuls opnås på 10 den direkte udgang 10. Ligeledes kan skiven, når lyset fra elementet 6 er svinget over fra en stolpe 4b til nærmeste hul 4a, dreje sig i vinkelområdet β, d.v.s. vinkelområdet, som begrænses af et huls 3a begrænsningssider, uden at et signal opnås på den direk-15 te udgang 10.The above functional description immediately indicates that if the disc 1 after the pump is switched off, vibrations e.g. from the pump motor, so that in its plane 5 it rotates back and forth about its center axis, it can, as the light from the element 5 swings over a hole 3a to the nearest post 3b, rotate in the angular region a, i.e.. the angular region, which is limited by a pole 4b, without any impulse being obtained on the direct output 10. Similarly, when the light from the element 6 is pivoted from a pole 4b to the nearest hole 4a, the disc can rotate in the angular region β, i.e. the angular range, which is limited by the restriction sides of a hole 3a, without obtaining a signal at the direct output 10.
Impulsgiveren ifølge opfindelsen er i virkeligheden et effektivt komplement til forekommende træge returspærringer, d.v.s. spærringer, som har til formål at forhindre skivedrejning imod den tilsigtede modsatte 20 retning og derved fejlindikering.The pulse sensor according to the invention is in fact an effective complement to occurring sluggish return barriers, i.e. barriers which are intended to prevent disc rotation against the intended opposite direction and thereby error indication.
Opfindelsen kan f.eks. modificeres på en sådan måde, at skiven kan bestå af en lysgennemtrængelig skive med sværtninger i stedet for stolper til opnåelse af lysugennemtrængeligt felt. Skiftevis efter hinanden 25 anbragte lysgennemtrængelige og lysuigennemtrænge lige felter kaldes ofte, ligesom i kravene, raster.The invention may e.g. is modified in such a way that the wafer may consist of a light-permeable wafer with blemishes instead of posts to obtain light-impervious field. Alternatively, light-permeable and light-emitting equal fields arranged in succession 25 are often called, as in the claims, breaks.
Rasterne behøver naturligvis ikke at være cirkelformede eller være anbragt på en cirkulær skive, de kan lige så godt være båndformede og være anbragt på en - 30 strimmel, som kan bevæge sig forbi de fotoelektriske aftasningselementer.Of course, the grids do not need to be circular or arranged on a circular disc, they may as well be band-shaped and placed on a strip which can move past the photoelectric scanning elements.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7607443A SE400002B (en) | 1976-06-30 | 1976-06-30 | ALTERNATIVE ELECTRONIC PULSE SENSOR |
SE7607443 | 1976-06-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK291377A DK291377A (en) | 1977-12-31 |
DK150837B true DK150837B (en) | 1987-06-29 |
DK150837C DK150837C (en) | 1988-01-18 |
Family
ID=20328336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK291377A DK150837C (en) | 1976-06-30 | 1977-06-29 | PULSE DOES |
Country Status (6)
Country | Link |
---|---|
DE (1) | DE2722844C2 (en) |
DK (1) | DK150837C (en) |
FI (1) | FI63126C (en) |
GB (1) | GB1563642A (en) |
NO (1) | NO144028C (en) |
SE (1) | SE400002B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4841316A (en) * | 1988-02-17 | 1989-06-20 | The Gerber Scientific Instrument Company | Photohead system for positioning an aperture wheel and method of making an aperture disc |
DE3942857C1 (en) * | 1989-12-23 | 1991-05-16 | Schwelm Tanksysteme Gmbh, 5830 Schwelm, De | Petrol pump with rotating piston measurer - driving light-interrupting disc for control generating light pulses for price calculator |
-
1976
- 1976-06-30 SE SE7607443A patent/SE400002B/en not_active IP Right Cessation
-
1977
- 1977-05-20 DE DE2722844A patent/DE2722844C2/en not_active Expired
- 1977-06-14 GB GB24839/77A patent/GB1563642A/en not_active Expired
- 1977-06-16 NO NO772127A patent/NO144028C/en unknown
- 1977-06-21 FI FI771935A patent/FI63126C/en not_active IP Right Cessation
- 1977-06-29 DK DK291377A patent/DK150837C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI771935A (en) | 1977-12-31 |
DE2722844C2 (en) | 1982-10-28 |
SE400002B (en) | 1978-03-06 |
NO144028B (en) | 1981-02-23 |
GB1563642A (en) | 1980-03-26 |
DK150837C (en) | 1988-01-18 |
DK291377A (en) | 1977-12-31 |
DE2722844A1 (en) | 1978-01-05 |
SE7607443L (en) | 1977-12-31 |
NO144028C (en) | 1981-06-03 |
FI63126B (en) | 1982-12-31 |
NO772127L (en) | 1978-01-02 |
FI63126C (en) | 1983-04-11 |
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PBP | Patent lapsed |