DE2620437A1 - Ultrasonic range finder for reflection free operation - has separate remote transmitter triggered from receiver via transmission link - Google Patents

Ultrasonic range finder for reflection free operation - has separate remote transmitter triggered from receiver via transmission link

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Publication number
DE2620437A1
DE2620437A1 DE19762620437 DE2620437A DE2620437A1 DE 2620437 A1 DE2620437 A1 DE 2620437A1 DE 19762620437 DE19762620437 DE 19762620437 DE 2620437 A DE2620437 A DE 2620437A DE 2620437 A1 DE2620437 A1 DE 2620437A1
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DE
Germany
Prior art keywords
ultrasonic
units
transmitter
unit
coupled
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.)
Pending
Application number
DE19762620437
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German (de)
Inventor
Roland Trautmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PFEIFF WERNER
Original Assignee
PFEIFF WERNER
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by PFEIFF WERNER filed Critical PFEIFF WERNER
Priority to DE19762620437 priority Critical patent/DE2620437A1/en
Publication of DE2620437A1 publication Critical patent/DE2620437A1/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/74—Systems using reradiation of acoustic waves, e.g. IFF, i.e. identification of friend or foe
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

The ultrasonic range-finder reduces errors due to multiple-path reflections, and comprises separate transmit and receive units - placed at either limit of the distance being measured. The receiver unit comprises an ultrasonic detector (UE) whose output is connected to a measuring circuit. The time delay measured is proportional to distance and is displayed in a suitable form (F). A trigger pulse from a 'press-to-measure' button (T) is sent to an ultrasonic transmitter (US) at the remote location. The transmitter can be triggered by cable, light beam or radio link. The trigger pulse also starts the timing circuit (M). The timing sequence is stopped on receipt of the ultrasonic signal from the remote transmitter.

Description

Roland Trautmann, Maiengrund 193,Roland Trautmann, Maiengrund 193,

7790 Meßkirch 2 und Werner Pfeife, Fittingstraß e 17, 7700 Singen Gerät zur Distanzmessung Die Erfindung betrifft ein Gerät zur Distanzmessung zwischen einem Meßobjekt und einem beim Gerät liegenden Nullpunkt mittels eines Ultraschallsenders und eines Ultraschallempfängers, wobei die Signallaufzeit im Gerät genau ermittelt, in Längenmaße umgesetzt und als solche auf ein Anzeigefeld des Geräts übertragen wird.7790 Meßkirch 2 and Werner Pfeife, Fittingstrasse 17, 7700 Singen Distance measurement device The invention relates to a device for measuring distance between a measurement object and a zero point lying at the device by means of a Ultrasonic transmitter and an ultrasonic receiver, with the signal transit time im Device precisely determined, converted into linear dimensions and as such on a display field of the device.

Nach der Patentanmeldung P 25 15 087.2 wurde bereits vorgeschlagen, ein derartiges Gerät im Taschenformat mit mindestens einer Sender/Empfänger-Kombination auszurüsten, das mit einer Zieleinrichtung versehen sein kann. Vom Sender aus wird das Signal gegen das Meßobjekt gerichtet, wird dann von diesem reflektiert und zum Geräteempfänger zurückgeworfen.According to the patent application P 25 15 087.2 it has already been proposed such a pocket-sized device with at least one transmitter / receiver combination to equip, which may be provided with an aiming device. From the transmitter the signal directed towards the measurement object, is then reflected by this and to the Device receiver thrown back.

Die Zeitdauer des Signallaufs kann mittels einer Frequenzuhr gemessen werden, die die Schwingungsimpulse z.B. eines Quarzes zählt und deren Anzahl im errechneten Verhältnis als Distanzangabe z.B. in Zentimetern auf dem Anzeigefeld angibt.The duration of the signal run can be measured by means of a frequency clock which counts the oscillation impulses e.g. of a quartz and their number in Calculated ratio as distance information, e.g. in centimeters on the display field indicates.

Der Nullpunkt der Messung liegt vorteilhafterweise in der Ebene der Geräterückwand.The zero point of the measurement is advantageously in the plane of the Rear panel of the device.

Der Nachteil dieser Geräte liegt in der Unsicherheit des Meßergebnisses, da das Signal auch von anderen Gegenständen reflektiert werden kann. Falls diese nahe dem Meßobjekt liegen kann die Falschmessung unbemerkt bleiben und sekundäre Schäden verursachen.The disadvantage of these devices is the uncertainty of the measurement result, as the signal can also be reflected by other objects. If this If the measurement object is close to the measurement object, the incorrect measurement can go unnoticed and secondary Cause damage.

Der Erfindung liegt die Aufgabe zugrunde, ein Gerät der vorbeschriebenen Art so auszubilden, daß Falschmessungen infolge von Reflexionen an anderen Gegenständen mit Sicherheit ausgeschaltet sind.The invention is based on the object of a device of described above Art to be trained in such a way that incorrect measurements as a result of reflections on other objects are definitely turned off.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Gerät in zwei voneinander getrennte, in unabhängige Gehäuse untergebrachte, eigengespeiste Aggregate aufgeteilt ist, deren erstes den Ultraschallempfänger, die Meßuhr mit den Auswertungselementen und das Anzeigefeld und deren zweites den Ultraschallsender aufweist, während beide Aggregate so verkoppelt sind, daß der von der Auslösetaste ausgehende Startimpuls gleichzeitig den Start der Meßuhr beim ersten Aggregat und die Abgabe des Ultraschallsignals beim zweiten Aggregat bewirkt. Die Verkoppelung der beiden Aggregate kann durch Kabel wie auch durch Licht- oder Funkkopplung erfolgen.This object is achieved in that the device in two separate, self-powered, housed in independent housings Aggregates is divided, the first of which with the ultrasonic receiver, the dial gauge the evaluation elements and the display panel and the second, the ultrasonic transmitter has, while both units are coupled so that the release button outgoing start impulse at the same time the start of the dial gauge on the first unit and causes the delivery of the ultrasonic signal at the second unit. The coupling the two units can be done by cable as well as by light or radio coupling.

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.Several embodiments of the invention are shown in the drawing and are described in more detail below.

Es zeigt Fig. 1 ein Beispiel mit Kabelkopplung, Fig. 2 ein Beispiel mit Lichtkopplung, Fig. 3 ein Beispiel mit Funkkopplung und Fig. 4 ein Ablaufdiagramm des Meßvorgangs beim Beispiel mit Funkkopplung.1 shows an example with cable coupling, FIG. 2 shows an example with light coupling, FIG. 3 shows an example with radio coupling and FIG. 4 shows a flow chart of the measuring process in the example with radio coupling.

Das erste Aggregat Al enthält die Auslösetaste T, die Meßuhr M samt den Auswertungselementen sowie den Ultraschallempfänger UE, während das zweite Aggregat A2 den Ultraschallsender US aufweist. Die Aggregate sind als Funktionsgruppe mit Meßuhr und Auswertungselementen so geschalw tet, daß die Nullpunkte der Messung jeweils in der Gehäuserückwand des betreffenden AgRgats Al, A2 liegen, wie die Zeichnung die Distanz D in Fig. l zeigt.The first unit Al contains the release button T, the dial gauge M. including the evaluation elements and the ultrasonic receiver UE, while the second Unit A2 has the ultrasonic transmitter US. The aggregates are as a functional group with dial gauge and evaluation elements switched so that the zero points of the measurement each in the rear wall of the housing of the relevant AgRgats Al, A2, as shown in the drawing shows the distance D in FIG.

Das erste Beispiel ist elektronisch am einfachsten aufgebaut, bedarf jedoch einer Kabelverbindung K, damit mit dem Tastendruck T gleichzeitig mit dem Starten der Meßuhr M der Ultrasdi allsender US das Signal aussendet, dessen Dauer dadurch gemessen wird, daß der Ultraschallempfänger UE die Meßuhr M stoppt und zugleich die Auswertung einleitet.The first example is the easiest to use electronically however, a cable connection K, so pressing the T button simultaneously with the Starting the dial gauge M of the Ultrasdi all transmitter US sends out the signal, the duration of which is measured in that the ultrasonic receiver UE stops the dial gauge M and at the same time initiates the evaluation.

Kabelunabhängig und daher vollig frei bewegbar sind die beiden anderen Beispiele, bei denen die Auslösung des Ultraschallsenders US von einem im zweiten Aggregat A2 eingebauten Empfänger LE bzs. FE erfolgt, dessen Funk- oder Lichtsignal von einem Licht- oder Funksender LS bzw. FS vom ersten Aggregat aus gesendet wird, der seinen Impuls von der Taste T erhält. Da die Kabel-, Licht- oder Funkübertragung bei den hier infrage kommenden Distanzen praktisch unverzögert sind, ist die gleichzeitige Auslösung der Meßuhr M und des Ultraschallsenders US stets optimal gewährleistet. Zeitlich meßbar sind praktisch nur die Längen sl des Ultraschalisignals 7gl. Diagramm Fig. 43.The other two are cable-independent and therefore completely free to move Examples in which the triggering of the ultrasonic transmitter US by one in the second Unit A2 built-in receiver LE or FE takes place, its radio or light signal is sent by a light or radio transmitter LS or FS from the first unit, which receives its impulse from the T key. As the cable, light or radio transmission are practically instantaneous at the distances in question here, is the simultaneous Triggering of the dial gauge M and the ultrasonic transmitter US is always optimally guaranteed. Practically only the lengths sl of the ultrasonic signal 7gl can be measured over time. diagram Fig. 43.

Die Vorteile der Erfindung liegen darin, daß alle durch die Signalreflexion verursachte Ungenauigkeiten, Fehler Schrägmessungen, Falschreflexionen etc. voll ausgeschaltet sind.The advantages of the invention are that all of the signal reflection caused inaccuracies, errors in oblique measurements, false reflections etc. fully are turned off.

Von besonderem Vorteil ist es z.B. bei Absteckungsarbeiten, daß ein reflektierendes Meßobjekt gar nicht vorhanden sein muß. Es könen zudem auch z.B. Absteckungsarbeiten in freier Landschaft mit Bäumen und sonstigen ohne Einfluß bleiben sollenden Gegenständen durchgeführt werden, was eine Messung mit reflektierenden Signalen völlig unmöglich macht.It is of particular advantage, e.g. when setting out, that a reflective target does not have to be present. It can also e.g. Staking out work in the open countryside with trees and others remain unaffected objects to be carried out, what a measurement with reflective Makes signals completely impossible.

Das Gerät nach der Erfindung kann natürlich beliebig erweitert werden, so daß z.B. beide Aggregate sich gleichen und Messungen von jedem Aggregat aus erlauben. Die Aggregate können auch so ausgebildet sein, daß sie sowohl Messungen der vorbeschriebenen Art wie auch solche mit reflektierenden Signalen ermöglichen, wenn z.B. das eingangs beschpiebene Gerät mit zusätzlichem Licht- oder Funksender und -empfänger ausgerüstet und entsprechend geschaltet wird. Natürlich können bei dieser Erfindung auch die Erfindungsmerkmale der Parat lelanmeldung (Vertreterakte T 521-76) derselben Anmelder mit den dort beschriebenen Vorteilen angewendet werden. Daß es keine Schwierigkeiten bereitet, die Aggregate Al,A2 auf Stative, Lafetten, optische Bänke etc. zu montieren, mit Fernaaslösung zu versehen oder eine Ausgabeschnittstelle der Meßwerte für digitale und analoge Weiterverarbeitung an Druckern, Displays Bildschirmen, Computern ete. vorzusehen, wenn Werte an Steckleisten gegeben und zusätzliche Sychronisationssignale erzeugt werden. L e e r s e i t eThe device according to the invention can of course be expanded as desired, so that, for example, both units are the same and allow measurements from each unit. The units can also be designed so that they both measurements of the above Kind as well as those with reflective signals, e.g. if that at the beginning The device described is equipped with an additional light or radio transmitter and receiver and is switched accordingly. Of course, in this invention, the Features of the invention of the Parat lelanmeldung (representative file T 521-76) by the same applicant can be used with the advantages described there. That there is no difficulty prepares to mount the units Al, A2 on tripods, mounts, optical benches, etc., to be provided with a remote solution or an output interface for the measured values for digital and analog processing on printers, displays, screens, computers, etc. to be provided if values are given on connector strips and additional synchronization signals be generated. L e r s e i t e

Claims (6)

Patentansprüche: 1.t Gerät zur Distanzmessung zwischen einem Meßobjekt und einem beim Gerät liegenden Nullpunkt mittels eines Ultraschallsenders u-:d eines Ultraschallempfängers, wobei die Signallaufzeit im Gerät genau ermittelt in Längenmaße umgesetzt und als solche auf ein Anzeigefeld des Geräts übertragen wird, dadurch gekennzeichnet, daß das Gerät in zwei voneinander getrennte, in unabhängige Gehäuse untergebrachte, eigengespeiste Aggregate (A, A2) aufgeteilt ist, deren erstes den Ultraschallempfäger (UE), die Meßuhr (M) mit den Auswertungselementen und das Anzeigefeld (F) und deren zweites den Ultraschallsender (US) aufweist, während beide Aggregate (Ai,A2) so verkoppelt sind, daß der von der AusLösetaste (T) ausgehende Startimpuls gleichzeitig den Start der Meßuhr (M) beim ersten Aggregat (Al) und die Abgabe des Ultraschallsignals (US) beim zweiten Aggregat (A2) bewirkt. Claims: 1.t device for distance measurement between a measurement object and a zero point at the device by means of an ultrasonic transmitter u-: d one Ultrasonic receiver, whereby the signal transit time in the device is precisely determined in terms of length implemented and transferred as such to a display panel of the device, thereby characterized in that the device in two separate, in independent housing housed, self-fed units (A, A2) is divided, the first of which is the Ultrasonic receiver (UE), the dial gauge (M) with the evaluation elements and the display panel (F) and the second has the ultrasonic transmitter (US), while both units (Ai, A2) are coupled in such a way that the start pulse emanating from the release button (T) at the same time the start of the dial gauge (M) at the first unit (Al) and the delivery of the Ultrasonic signal (US) caused by the second unit (A2). 2./ Gerät nach Anspruch 1, dadurch gekennzeichnet* daß beide Aggregate (A,AZ) durch ein Kabel (K) verkoppelt sind.2. / Device according to claim 1, characterized * that both units (A, AZ) are coupled by a cable (K). 3./ Gerät nach Anspruch 1, dadurch gekennzeichnet, daf beide Aggregate ('A1,A2) durch eine Lichtkopplung (LS,LF) miteinaner verkoppelt sind.3. / Device according to claim 1, characterized in that both Aggregates ('A1, A2) are coupled together by a light coupling (LS, LF). 4./ Gerät nach Anspruch 1, dadurch gekennzeichnet, daß beide Aggregate (A1,Å2) durch eine Funkkopplung (FS,FE) miteinwander verkoppelt sind.4. / Apparatus according to claim 1, characterized in that both units (A1, Å2) are coupled with one another by a radio link (FS, FE). 5./ Gerät nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß in jedem Aggregant (A1,A2) sämtliche Elemente beider Aggregate enthalten sind.5. / Device according to one of claims 1 to 4, characterized in that that in each aggregate (A1, A2) all elements of both aggregates are contained. 6.f Gerät nach Anspruch 5, dadurch gekennzeichnet, daß jedes Aggregat auch zur wahlweise einschaltbaren Messung nach dem Signalreflexsystem ausgerüstet und gestaltet ist.6.f device according to claim 5, characterized in that each unit also equipped for optionally switchable measurement according to the signal reflex system and is designed.
DE19762620437 1976-05-08 1976-05-08 Ultrasonic range finder for reflection free operation - has separate remote transmitter triggered from receiver via transmission link Pending DE2620437A1 (en)

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DE19762620437 DE2620437A1 (en) 1976-05-08 1976-05-08 Ultrasonic range finder for reflection free operation - has separate remote transmitter triggered from receiver via transmission link

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DE19762620437 DE2620437A1 (en) 1976-05-08 1976-05-08 Ultrasonic range finder for reflection free operation - has separate remote transmitter triggered from receiver via transmission link

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029115A1 (en) * 1979-08-01 1981-02-19 Morita Mfg METHOD AND DEVICE FOR STORING, READING AND REPRODUCING THE DISTANCE OF COMPONENTS TO BE CONTROLLED
DE3144994A1 (en) * 1980-11-12 1982-06-16 Ingeniörsfirma N.D.C. Netzler & Dahlgren Co AB, Särö DEVICE FOR DISPLAYING A CERTAIN APPROACH BETWEEN MOVABLE UNITS
DE3210470A1 (en) * 1982-03-22 1983-09-29 Siemens AG, 1000 Berlin und 8000 München Ultrasonic sensor
DE3442686A1 (en) * 1984-11-23 1986-05-28 Hanns 4750 Unna-Massen Rump Apparatus and method for the contact-free positioning and measurement of the distance between any desired points in space
DE3790018T1 (en) * 1986-01-28 1988-10-27
EP0305780A1 (en) * 1987-08-20 1989-03-08 Wolfgang Brunner Method and apparatus for error reduction in the measurement of the spatial movement of points to be measured by means of ultrasonic signals
DE4322849C1 (en) * 1993-07-08 1994-12-08 Sick Optik Elektronik Erwin Method for determining the propagation time (delay time) of sound signals, and a sound-wave propagation-time determining device
DE19929984C1 (en) * 1999-06-30 2000-10-26 Schmersal K A Gmbh & Co Position detection device for elevator cabin uses evaluation of signal coupled to signal line extending along elevator shaft via periodically triggered signal coupler attached to elevator cabin
DE10310857A1 (en) * 2003-03-11 2004-09-23 Universität Bonn Triangulation system for measuring spatial positions, e.g. for determining the positions of users within a virtual reality system, wherein both user and reference units are equipped with ultrasound transmitters and receivers
DE10331321A1 (en) * 2003-07-10 2005-02-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Three-dimensional object detection device e.g. for archeological sites and buildings, has acoustic wave transmitter as well as antenna for radiating electromagnetic waves
WO2011066662A1 (en) * 2009-12-01 2011-06-09 Enrico Geiler Procedure for detecting the movements of an ultrasound emitter and device detecting the three-dimensional movements of an ultrasound emitter

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029115A1 (en) * 1979-08-01 1981-02-19 Morita Mfg METHOD AND DEVICE FOR STORING, READING AND REPRODUCING THE DISTANCE OF COMPONENTS TO BE CONTROLLED
DE3144994A1 (en) * 1980-11-12 1982-06-16 Ingeniörsfirma N.D.C. Netzler & Dahlgren Co AB, Särö DEVICE FOR DISPLAYING A CERTAIN APPROACH BETWEEN MOVABLE UNITS
DE3210470A1 (en) * 1982-03-22 1983-09-29 Siemens AG, 1000 Berlin und 8000 München Ultrasonic sensor
DE3442686A1 (en) * 1984-11-23 1986-05-28 Hanns 4750 Unna-Massen Rump Apparatus and method for the contact-free positioning and measurement of the distance between any desired points in space
DE3790018T1 (en) * 1986-01-28 1988-10-27
EP0305780A1 (en) * 1987-08-20 1989-03-08 Wolfgang Brunner Method and apparatus for error reduction in the measurement of the spatial movement of points to be measured by means of ultrasonic signals
DE4322849C1 (en) * 1993-07-08 1994-12-08 Sick Optik Elektronik Erwin Method for determining the propagation time (delay time) of sound signals, and a sound-wave propagation-time determining device
DE19929984C1 (en) * 1999-06-30 2000-10-26 Schmersal K A Gmbh & Co Position detection device for elevator cabin uses evaluation of signal coupled to signal line extending along elevator shaft via periodically triggered signal coupler attached to elevator cabin
DE10310857A1 (en) * 2003-03-11 2004-09-23 Universität Bonn Triangulation system for measuring spatial positions, e.g. for determining the positions of users within a virtual reality system, wherein both user and reference units are equipped with ultrasound transmitters and receivers
DE10331321A1 (en) * 2003-07-10 2005-02-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Three-dimensional object detection device e.g. for archeological sites and buildings, has acoustic wave transmitter as well as antenna for radiating electromagnetic waves
DE10331321B4 (en) * 2003-07-10 2006-05-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Device and method for three-dimensional object detection
WO2011066662A1 (en) * 2009-12-01 2011-06-09 Enrico Geiler Procedure for detecting the movements of an ultrasound emitter and device detecting the three-dimensional movements of an ultrasound emitter

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