DE2455733A1 - Electronic and optical distance meter - uses infra-red radiation to determine the relative distance between two objects - Google Patents

Electronic and optical distance meter - uses infra-red radiation to determine the relative distance between two objects

Info

Publication number
DE2455733A1
DE2455733A1 DE19742455733 DE2455733A DE2455733A1 DE 2455733 A1 DE2455733 A1 DE 2455733A1 DE 19742455733 DE19742455733 DE 19742455733 DE 2455733 A DE2455733 A DE 2455733A DE 2455733 A1 DE2455733 A1 DE 2455733A1
Authority
DE
Germany
Prior art keywords
objects
red radiation
relative distance
electronic
transmitters
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.)
Withdrawn
Application number
DE19742455733
Other languages
German (de)
Inventor
Friedrich Sack
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19742455733 priority Critical patent/DE2455733A1/en
Publication of DE2455733A1 publication Critical patent/DE2455733A1/en
Withdrawn legal-status Critical Current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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

The device for measuring the relative distance between two objects, typically moving vehicles uses infra-red radiation. One vehicle has two transmitters (1, 2) for infra-red beams (B, C) which are 180 deg. out of phase. The reflected beam from the next vehicle returns to a receiver (3) between the two transmitters. The outgoing signals are at 1 khz. The returned signals are fed to a comparator actuated by a photodiode, on each side, so that the comparators give an output signal to a differential amplifier which is proportional to the relative displacement of the two vehicles.

Description

Beschreibung zum Beispiel 1 IR-Sender 1 strahlt z.B. mit 1 Khz.-Modulation den Strahl B aus.Description for example 1 IR transmitter 1 emits e.g. with 1 Khz modulation beam B.

IR-Sender 2 Strahlt z.B. mit 1 Khz.-Modulation den Strahl C aus.IR transmitter 2 emits beam C, e.g. with 1 kHz modulation.

(Dieser Strahl ist jedoch um # 180° phasenverschoben).(However, this ray is out of phase by # 180 °).

Der Empfänger 3 empfängt das vom Gegenstand D, E oder F-reflektierte IR-Licht, welches von der Fotodiode im Empfänger 3 in Spannung umgewandelt und vom Verstärker 4 verstärkt wird, um dann vom Komparator 7 und 8 weiter verarbeitet zu werden.The receiver 3 receives the reflected from the object D, E or F IR light, which is converted into voltage by the photodiode in the receiver 3 and transmitted by the Amplifier 4 is amplified in order to then be further processed by comparators 7 and 8 will.

Der Komparator 7 wird vom Pulser 1 5 getriggert (geöffnet).The comparator 7 is triggered (opened) by the pulser 1 5.

Der Komparator 8 wird vom Pulser 2 6 getriggert (geöffnet).The comparator 8 is triggered (opened) by the pulser 26.

Im Fall 1 trifft der IR-Strahl C nur den Gegenstand E, welcher über den Strahl A zur Fotodiode zurückreflektiert wird.In case 1, the IR beam C only hits the object E, which is above the beam A is reflected back to the photodiode.

Wenn der Trigger 2 den Komparator 8 gleichzeitig öffnet, erscheint bei der Auswertung 10 ein Signal von 1 Khz.If the trigger 2 opens the comparator 8 at the same time, appears in the evaluation 10 a signal of 1 Khz.

Der gleiche Vorgang ist im Fall 2 mit dem Gegenstand P in Verbindung mit dem Pulser 1 5 dem Komparator 7 und der Auswertung 9 möglich.The same process is in connection with the item P in case 2 with the pulser 15, the comparator 7 and the evaluation 9 possible.

Treffen nun beide Strahlen B und C den Gegenstand X, so entsteht durch Z';urtickreflektion beider Signale ein 2-Khz.-Signal, weil beide l-Khz.-Signale wiedergegeben werden, wobei aber das eine Signal vom Pulser 2 6 um 180° versetzt ausgestrahlt wird und somit bei Riickreflektian ein 2-Khz.-Signal entsteht Beim Beispiel 2 werden die oben beschriebenen Vorgänge als Auffahr-Warngerät im Kfz.-Bereich dargestellt.If both rays B and C hit the object X, then arises through Z '; urtickreflection of both signals a 2-Khz. Signal, because both 1-Khz. Signals are reproduced, but the one signal from the pulser 26 offset by 180 ° is emitted and thus a 2-Khz Example 2 uses the processes described above as a collision warning device in the motor vehicle sector shown.

Claims (5)

PatentansprücheClaims 1.) Einrichtung zur Durchführung des Verfahrens zur Messung der relativen Entfernung eines Objekts zu einem Bezugssystem unter erwendung eines optischen Infrarot-Empfdngers in Verbindung mit 2 Infrarot-Sendern, wobei während der Messung der Standort des Objekts zusätzlich angezeigt wird, d.h.« ob sich das Objekt linkst rechts oder genau in der Mitte der optischen Achse des Empfängers befindet.1.) Device for carrying out the method for measuring the relative Distance of an object to a reference system using an infrared optical receiver in connection with 2 infrared transmitters, whereby the location of the Object is also displayed, i.e. «whether the object is left to the right or exactly located in the middle of the optical axis of the receiver. 2.) Die bei dem benutzten Verfahren nach Bild l angewandte Phasendrehung der beiden IR-Sender um 1800 gegeneinander und die Auswertung der Reflektionen mittels Triggersignalen und 2 Komparatoren.2.) The phase rotation applied in the method used according to Figure 1 of the two IR transmitters around 1800 against each other and the evaluation of the reflections by means of Trigger signals and 2 comparators. 3.) Die Verwendung der Anordnung als Entferaungs-MeBgerät und Hindernisortung für Rlinde.3.) The use of the arrangement as a distance measuring device and obstacle location for bark. + Für Entfernungsmessungen bei gleichzeitig genauer Ausrichtung zum Objekt.+ For distance measurements with precise alignment to the Object. 5.) Als Einbruchssicherung bzw. Diebstahlsicherung für die Gegenstände D, E oder P. 5.) As burglary protection or theft protection for the objects D, E or P. LeerseiteBlank page
DE19742455733 1974-11-25 1974-11-25 Electronic and optical distance meter - uses infra-red radiation to determine the relative distance between two objects Withdrawn DE2455733A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19742455733 DE2455733A1 (en) 1974-11-25 1974-11-25 Electronic and optical distance meter - uses infra-red radiation to determine the relative distance between two objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742455733 DE2455733A1 (en) 1974-11-25 1974-11-25 Electronic and optical distance meter - uses infra-red radiation to determine the relative distance between two objects

Publications (1)

Publication Number Publication Date
DE2455733A1 true DE2455733A1 (en) 1976-05-26

Family

ID=5931685

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742455733 Withdrawn DE2455733A1 (en) 1974-11-25 1974-11-25 Electronic and optical distance meter - uses infra-red radiation to determine the relative distance between two objects

Country Status (1)

Country Link
DE (1) DE2455733A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728948A1 (en) * 1987-08-29 1989-03-09 Bayerische Motoren Werke Ag PARKING AID DEVICE
DE4004530A1 (en) * 1990-02-14 1991-08-22 Stefan Reich Optical distance measuring appts. - has light transmitters and receivers forming transducer pairs
EP0522520A1 (en) * 1991-07-12 1993-01-13 Bayerische Motoren Werke Aktiengesellschaft Distance measuring apparatus for vehicules
WO1998034131A1 (en) * 1997-01-30 1998-08-06 Sjoenell Goeran Signal warning device on vehicles to attract the driver's attention
EP0957376A2 (en) * 1998-05-13 1999-11-17 Olympus Optical Co., Ltd. Distance measuring apparatus
US6744353B2 (en) 1999-12-15 2004-06-01 Sjoenell Goeran Blind spot detector
US6864964B2 (en) 2002-07-03 2005-03-08 Optosys Sa Optical distance measuring device
US7394355B2 (en) 2004-02-02 2008-07-01 Sjoenell Goeran Vehicle collision detector

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728948A1 (en) * 1987-08-29 1989-03-09 Bayerische Motoren Werke Ag PARKING AID DEVICE
DE4004530A1 (en) * 1990-02-14 1991-08-22 Stefan Reich Optical distance measuring appts. - has light transmitters and receivers forming transducer pairs
DE4004530C2 (en) * 1990-02-14 1999-07-29 Stefan Reich Optical distance measurement
EP0522520A1 (en) * 1991-07-12 1993-01-13 Bayerische Motoren Werke Aktiengesellschaft Distance measuring apparatus for vehicules
WO1998034131A1 (en) * 1997-01-30 1998-08-06 Sjoenell Goeran Signal warning device on vehicles to attract the driver's attention
EP0957376A2 (en) * 1998-05-13 1999-11-17 Olympus Optical Co., Ltd. Distance measuring apparatus
EP0957376A3 (en) * 1998-05-13 2003-01-22 Olympus Optical Co., Ltd. Distance measuring apparatus
US6744353B2 (en) 1999-12-15 2004-06-01 Sjoenell Goeran Blind spot detector
US6864964B2 (en) 2002-07-03 2005-03-08 Optosys Sa Optical distance measuring device
US7394355B2 (en) 2004-02-02 2008-07-01 Sjoenell Goeran Vehicle collision detector
USRE44331E1 (en) 2004-02-02 2013-07-02 Livy SRVCS, Limited Liability Company Vehicle collision detector

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination