DE3834158A1 - Ultrasound sensor system having a regulated amplifier and sectors whose attenuation is limited in a defined manner - Google Patents
Ultrasound sensor system having a regulated amplifier and sectors whose attenuation is limited in a defined mannerInfo
- Publication number
- DE3834158A1 DE3834158A1 DE19883834158 DE3834158A DE3834158A1 DE 3834158 A1 DE3834158 A1 DE 3834158A1 DE 19883834158 DE19883834158 DE 19883834158 DE 3834158 A DE3834158 A DE 3834158A DE 3834158 A1 DE3834158 A1 DE 3834158A1
- Authority
- DE
- Germany
- Prior art keywords
- damping
- limited
- sensor system
- defined manner
- ultrasound sensor
- 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.)
- Ceased
Links
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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/523—Details of pulse systems
- G01S7/526—Receivers
- G01S7/527—Extracting wanted echo signals
- G01S7/5273—Extracting wanted echo signals using digital techniques
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
Aus der Anmeldung P 36 20 783.7 sind Verfahren bekannt, bei denen die Verstärkung an beliebigen Punkten der Zeitachse sich zeitin tegriert selbsttätig einregelt.Methods are known from the application P 36 20 783.7, in which the gain at any point on the timeline is temporal tegrates automatically.
Aus der Anmeldung P 36 20 783.7 ist ferner bekannt, daß der Ver stärkungsverlauf über die Zeit Einfluß auf den Öffnungswinkel von Ultraschall-Sensoren nach dem Impuls-Echo-Laufzeitverfahren hat.From the application P 36 20 783.7 it is also known that the Ver strengthening course over time influence on the opening angle of Has ultrasonic sensors according to the pulse-echo transit time method.
Es wird oft gewünscht, daß der Öffnungswinkel maximal ist, wobei gleichzeitig die Einrichtung wirkungsvoll den eigenen Sendeimpuls zu unterdrücken hat, Verstärkungstoleranzen der Verstärker auf fangen soll, sich an unterschiedliche Umgebungsgeräuschpegel an passen soll und gleichzeitig keinesfalls starke Echo's, wie sie z. B. von Personen verursacht werden können, ausregeln darf.It is often desired that the opening angle be maximum, where at the same time, the device effectively sends its own pulse has to suppress, amplification tolerances of the amplifier should start at different ambient noise levels should fit and at the same time not strong echoes like them e.g. B. can be caused by people.
Die Aufgabe der Erfindung ist demnach, ein Verfahren vorzustel len, dasThe object of the invention is therefore to present a method len, that
- - automatisch den Sendeimpuls unterdrückt und dabei auf sich z. B. durch Temperatur-Einfluß ändernde Pegel flexibel rea giert,- Automatically suppresses the transmission impulse while doing so e.g. B. by temperature-influencing level flexibly rea yaws,
- - die maximale Verstärkung den Umgebungsbedingungen anpassen soll,- adapt the maximum gain to the ambient conditions should,
- - die Unterdrückung wichtiger Ziele jedoch verhindern soll.- should prevent the suppression of important goals.
Das erfindungsgemäße Verfahren benötigt die in Fig. 1 beschrie benen Einrichtungen:The method according to the invention requires the facilities described in FIG. 1:
Ein Mikroprozessor oder eine vergleichbare Logikanordnung (4) erzeugt in einer Sendeschaltung (8) einen Sendeimpuls, der über geeignete Wandler (9) abgestrahlt wird.A microprocessor or a comparable logic arrangement ( 4 ) generates a transmission pulse in a transmission circuit ( 8 ) which is emitted by suitable converters ( 9 ).
Ein Empfangswandler (1) empfängt die Echo's, die über ein vom Mikroprozessor gesteuertes Dämpfungsglied (2) durch einen Ver stärker (3) verstärkt und digitalisiert werden.A receiving transducer ( 1 ) receives the echoes, which are amplified and digitized by a amplifier ( 3 ) controlled by a microprocessor-controlled attenuator ( 2 ).
Im Prozessor ergibt sich für jeden Punkt auf der Zeitachse eine Regelspannung (7), die über eine Vielzahl von Messungen itterativ gebildet wird und prinzipiell jedes Echo absolut unterdrücken kann. Der Prozessor gibt die Regelspannung über einen A/D-Wandler (6) heraus. A control voltage ( 7 ) results in the processor for each point on the time axis, which is formed iteratively over a large number of measurements and can in principle absolutely suppress any echo. The processor outputs the control voltage via an A / D converter ( 6 ).
Wie in Fig. 2 dargestellt, sind auf der Zeitachse Sektoren ein geteilt, denen eine beliebige maximale Dämpfung zugeordnet ist.As shown in Fig. 2, sectors are divided on the time axis, which is assigned any maximum damping.
Vorteilhaft wird dadurch erreicht, daß die Dämpfung in den ein zelnen Sektoren so begrenzt bzw. eingerichtet werden kann, daß die geforderten Aufgaben erfüllt werden.It is advantageously achieved that the damping in the individual sectors can be limited or set up so that the required tasks are fulfilled.
In der Start-Phase (10) kann die Dämpfung z. B. 100% betragen. Die permanent vorhandenen Einkopplungen des eigenen Sensorsignals werden insofern wirkungsvoll unterdrückt, wobei vorteilhaft ein angepaßter Dämpfungswert entsteht, der sich auf die bekannten temperaturabhängigen Wirkungsgrade der Schallwandler insbesondere bei tiefen Temperaturen einstellen kann.In the start phase ( 10 ), the damping z. B. 100%. The permanent coupling of the own sensor signal is effectively suppressed, which advantageously results in an adapted damping value that can adjust to the known temperature-dependent efficiencies of the sound transducers, especially at low temperatures.
In der Nah-Phase (11) können in einigen Fällen Nachschwinger des Sendeimpulses auftreten, die jedoch schwächer sind. Hier reicht es aus, die mögliche Dämpfung auf 50% zu begrenzen. Damit wird erreicht, daß vorteilhaft ohne Abgleich und selbsttätig der störende Einfluß unterdrückt wird, die tatsächlichen Echo's üb licher Objekte jedoch erkannt werden.In the near phase ( 11 ), post-oscillation of the transmission pulse can occur in some cases, but these are weaker. Here it is sufficient to limit the possible damping to 50%. This ensures that the disturbing influence is suppressed advantageously without adjustment and automatically, but the actual echoes usual objects are recognized.
In der entfernten Distanz ist die mögliche Dämpfung noch gerin ger. Hier dient die erfindungsgemäße Einrichtung im wesentlichen dazu, die denkbaren Hintergrundgeräusche abzufangen.At a distance, the possible damping is still low ger. Here the device according to the invention essentially serves to intercept the conceivable background noise.
Vereinfacht gesagt, wird an den jeweiligen Punkten auf der Zeit achse die Verstärkung so eingeregelt, daß sie den Umständen nach maximal ist, wobei eine vorwählbare Dämpfung in den einzelnen Sektoren jedoch nicht überschritten werden kann, so daß übliche Objekte im Meßbereich stets einen Alarm auslösen. Weiter wird vorgeschlagen, bei Inbetriebnahme unmittelbar eine fest einge prägte Regelspannungskurve zu erzeugen, die den Anforderungen nach aller Erfahrung entspricht. Die erforderliche optimale Kurve wird verfahrensgemäß im Verlauf der nächsten Meßzyklen gebildet.Put simply, time is at the respective points axis the gain adjusted so that it depends on the circumstances is maximum, with a selectable damping in the individual Sectors, however, cannot be crossed, making usual Objects in the measuring range always trigger an alarm. Will continue proposed to have a permanently turned on when commissioning embossed control voltage curve that meet the requirements according to all experience. The optimal curve required is formed according to the method in the course of the next measuring cycles.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883834158 DE3834158A1 (en) | 1988-10-07 | 1988-10-07 | Ultrasound sensor system having a regulated amplifier and sectors whose attenuation is limited in a defined manner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19883834158 DE3834158A1 (en) | 1988-10-07 | 1988-10-07 | Ultrasound sensor system having a regulated amplifier and sectors whose attenuation is limited in a defined manner |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3834158A1 true DE3834158A1 (en) | 1990-04-12 |
Family
ID=6364605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883834158 Ceased DE3834158A1 (en) | 1988-10-07 | 1988-10-07 | Ultrasound sensor system having a regulated amplifier and sectors whose attenuation is limited in a defined manner |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3834158A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4003774A1 (en) * | 1990-02-08 | 1991-08-14 | Fraunhofer Ges Forschung | Sound intensity compensation system for ultrasonic range sensor - uses measurement of spatial sound field to obtain values for compensation voltage characteristic |
DE19844855A1 (en) * | 1998-09-30 | 2000-04-27 | Pil Sensoren Gmbh | Operating method for circuit for receiving ultrasonic signals involves detecting noise pulses, regulating gain of amplifier so that only useful pulse appears at circuit output |
DE102012200991A1 (en) * | 2012-01-24 | 2013-07-25 | Robert Bosch Gmbh | Environment detecting device and associated method for determining the position and / or movement of an object |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2009071A1 (en) * | 1969-05-27 | 1970-12-03 | Burroughs Corp., Detroit, Mich. (V.St.A.) | Quantization system with adaptable automatic fixed character suppression |
DE2435006A1 (en) * | 1974-07-20 | 1976-02-05 | Licentia Gmbh | Altering amplification of radar receiver - using amplifier damper altered by output voltage of control generator |
DE2915069A1 (en) * | 1978-04-14 | 1979-10-31 | Eg & G Int | TIME-REGULATED AMPLIFIER FOR SIDE SCAN SONAR |
DE3022857A1 (en) * | 1979-08-29 | 1981-04-02 | EUMIG Elektrizitäts- und Metallwaren-Industrie GmbH, Wiener Neudorf | DEVICE FOR MEASURING TIME |
DE2755556C3 (en) * | 1977-12-13 | 1981-11-19 | ELP-Electronic & Plastic's GmbH, 5880 Lüdenscheid | Device for contactless distance measurement |
DE2923979C2 (en) * | 1979-06-13 | 1982-12-09 | ELP-Electronic & Plastic's GmbH, 5880 Lüdenscheid | Device for contactless distance measurement |
DE3133080A1 (en) * | 1981-08-21 | 1983-03-10 | Honeywell-Elac-Nautik Gmbh, 2300 Kiel | CIRCUIT ARRANGEMENT FOR Echo Sounders |
DE3133079A1 (en) * | 1981-08-21 | 1983-03-10 | Honeywell-Elac-Nautik Gmbh, 2300 Kiel | Circuit arrangement for the improved reproduction of a close succession of echoes in an echo sounder |
DE3405915A1 (en) * | 1984-02-18 | 1985-08-22 | Bayerische Motoren Werke AG, 8000 München | SWITCHING ARRANGEMENT FOR AN ULTRASONIC DISTANCE METER |
DE3511563A1 (en) * | 1985-03-29 | 1986-10-02 | Hanns 4750 Unna-Massen Rump | Apparatus and device for the purpose of distance measurement using ultrasound with compensation of the temperature-induced errors in signal amplitude |
JPS62197776A (en) * | 1986-02-25 | 1987-09-01 | Nec Corp | Target signal detecting circuit |
DE3620783A1 (en) * | 1986-06-20 | 1987-12-23 | Hanns Rump | Apparatus and method for suppressing interference signals in ultrasound pulse-echo apparatuses |
-
1988
- 1988-10-07 DE DE19883834158 patent/DE3834158A1/en not_active Ceased
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2009071A1 (en) * | 1969-05-27 | 1970-12-03 | Burroughs Corp., Detroit, Mich. (V.St.A.) | Quantization system with adaptable automatic fixed character suppression |
DE2435006A1 (en) * | 1974-07-20 | 1976-02-05 | Licentia Gmbh | Altering amplification of radar receiver - using amplifier damper altered by output voltage of control generator |
DE2755556C3 (en) * | 1977-12-13 | 1981-11-19 | ELP-Electronic & Plastic's GmbH, 5880 Lüdenscheid | Device for contactless distance measurement |
DE2915069A1 (en) * | 1978-04-14 | 1979-10-31 | Eg & G Int | TIME-REGULATED AMPLIFIER FOR SIDE SCAN SONAR |
DE2923979C2 (en) * | 1979-06-13 | 1982-12-09 | ELP-Electronic & Plastic's GmbH, 5880 Lüdenscheid | Device for contactless distance measurement |
DE3022857A1 (en) * | 1979-08-29 | 1981-04-02 | EUMIG Elektrizitäts- und Metallwaren-Industrie GmbH, Wiener Neudorf | DEVICE FOR MEASURING TIME |
DE3133080A1 (en) * | 1981-08-21 | 1983-03-10 | Honeywell-Elac-Nautik Gmbh, 2300 Kiel | CIRCUIT ARRANGEMENT FOR Echo Sounders |
DE3133079A1 (en) * | 1981-08-21 | 1983-03-10 | Honeywell-Elac-Nautik Gmbh, 2300 Kiel | Circuit arrangement for the improved reproduction of a close succession of echoes in an echo sounder |
DE3405915A1 (en) * | 1984-02-18 | 1985-08-22 | Bayerische Motoren Werke AG, 8000 München | SWITCHING ARRANGEMENT FOR AN ULTRASONIC DISTANCE METER |
DE3511563A1 (en) * | 1985-03-29 | 1986-10-02 | Hanns 4750 Unna-Massen Rump | Apparatus and device for the purpose of distance measurement using ultrasound with compensation of the temperature-induced errors in signal amplitude |
JPS62197776A (en) * | 1986-02-25 | 1987-09-01 | Nec Corp | Target signal detecting circuit |
DE3620783A1 (en) * | 1986-06-20 | 1987-12-23 | Hanns Rump | Apparatus and method for suppressing interference signals in ultrasound pulse-echo apparatuses |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4003774A1 (en) * | 1990-02-08 | 1991-08-14 | Fraunhofer Ges Forschung | Sound intensity compensation system for ultrasonic range sensor - uses measurement of spatial sound field to obtain values for compensation voltage characteristic |
DE19844855A1 (en) * | 1998-09-30 | 2000-04-27 | Pil Sensoren Gmbh | Operating method for circuit for receiving ultrasonic signals involves detecting noise pulses, regulating gain of amplifier so that only useful pulse appears at circuit output |
DE102012200991A1 (en) * | 2012-01-24 | 2013-07-25 | Robert Bosch Gmbh | Environment detecting device and associated method for determining the position and / or movement of an object |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |