DE735005C - Procedure for distance measurement in any media by rhythmically sending pulses - Google Patents
Procedure for distance measurement in any media by rhythmically sending pulsesInfo
- Publication number
- DE735005C DE735005C DED70152D DED0070152D DE735005C DE 735005 C DE735005 C DE 735005C DE D70152 D DED70152 D DE D70152D DE D0070152 D DED0070152 D DE D0070152D DE 735005 C DE735005 C DE 735005C
- Authority
- DE
- Germany
- Prior art keywords
- pulse
- rhythmically
- procedure
- distance measurement
- pulses
- 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
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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
- G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
- G01S15/101—Particularities of the measurement of distance
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
Verfahren zur Abstandsmessung in beliebigen Medien durch rhythmisches Senden von Impulsen Die Schallgeschwindigkeit in Wasser beträgt etwa 1500 m pro Sekunde. Erfolgen z. B. zehn Lotungen pro Sekunde, so beträgt der maximale Meßbereich 75 m. Der Vorteil einer so großen Lotfolge pro Zeiteinheit ist eine stehende Anzeige für den Beobachter, d. h. die zehn oder mehr in einer Sekunde aufeinanderfolgenden Lotungen sind für das Auge nicht mehr als einzelne Lottmgen zu erkennen, sondern lerwecken den Eindruck eines Zeigers, der sich kontinuierlich mit der sich ändernden Tiefe mitbewegt. Gleichzeitig wird eine große Meßgenauigkeit erzielt. Mit den bekannten Verfahren, bei denen zehn und mehr Lotungen in der Sekunde ausgeführt werden, kann man jedoch nicht Tiefen über 75 m loten. Beträgt z. B. die zu messende Tiefe 100 m, so erfolgt bei einer Impulsfolge von 10 Lotungen in der Sekunde die Echoanzeige, nachdem der Zeiger zum ersten Male den Nullpunkt der Skala überschritten hat.Method for distance measurement in any media by rhythmic Sending pulses The speed of sound in water is about 1500 m per Second. Success z. B. ten plumbing per second, the maximum measuring range is 75 m. The advantage of such a large plumbing sequence per unit of time is a standing display for the observer, d. H. the ten or more consecutive in one second The eye can no longer recognize soundings as individual lots, but rather They give the impression of a pointer that changes continuously with the changing Depth moves with it. At the same time, a high level of measurement accuracy is achieved. With the known Methods in which ten or more plumbing can be carried out per second However, you do not plumb depths over 75 m. Is z. B. the depth to be measured 100 m, the echo is displayed with a pulse train of 10 soundings per second, after the pointer has crossed the zero point of the scale for the first time.
Es würden also auf der Skala etwa 25 m angezeigt werden. Würden 500 m zu loten sein, so würden zwischen der sechsten und siebenten Lotung, also in dem Bereich zwisehen 450 und 525 m auf der Skala etwa 5o m angezeigt werden. Es vergeht also hierbei vom ersten Sendeimpuls ab bis zur Ankunft des zugehörigen Echos einmalig die Zeit von 2/S Sekunde. Dann folgen jedoch die Echos mit einer Geschwindigkeit von 10 pro Sekunde Um dies!en Nachteil zu vermeiden, werden bei derartigen Verfahren zur Abstandsmessung Abstände, welche größer sind als der durch den Ablauf einer Impulsfolge gegebene NVhert (z. B. größer als 75m bei einer Impulsfrequenz von 10 pro Sekunde und Wasser als Medium), unter Abzählung der Sendeimpulse zwischen dem ersten Sendeimpuls und dem ersten Echo in Verbindung mit der oben besehriehenen optischen Meßeinrichtung für schnelle Impulsfolge gemessen. Diese Abzählung erfolgt mittels einer geeigneten Zählvorrichtung; die z. B. als Grobmeßeinrichtung für den Absolutwert der Tiefe ausgebildet ist. - B-ei der zuletzt erwähnten Ausbildung der Zählvorrichtung werden die Impulse, die bei der Durchführung des Meßverfahrens zwischen der Aussendung seines Impulses und dem Empfang des diesem Sendeimpuls entsprechenden reflektierten Impulses ausgesendet werden, indirekt gezählt. So it would be about 25 m on the scale. Would 500 m to be plumbed, so would be between the sixth and seventh plumbing, i.e. in the The range between 450 and 525 m is displayed on the scale around 50 m. It goes away in this case once from the first transmission pulse until the arrival of the associated echo the time of 2 / S second. But then the echoes follow at one speed of 10 per second In order to avoid this disadvantage, such methods For distance measurement, distances that are greater than that caused by the expiry of a Pulse sequence given NVhert (e.g. greater than 75m with a pulse frequency of 10 per second and water as medium), counting the transmission pulses between the first transmission pulse and the first echo in connection with the above mentioned optical measuring device for fast pulse train measured. This counting takes place by means of a suitable counting device; the z. B. as a coarse measuring device for the Absolute value of the depth is formed. - For the last-mentioned training of the Counting device are the pulses that are used when performing the measuring process between sending out his impulse and the reception of this transmission pulse corresponding reflected pulse are emitted, counted indirectly.
Bei einer Lotfolge von Io pro Sekunde fallen bei Messungen von Tiefen, gleich oder größer als 75 m, die Werte 75 m, 150 m, 225 m, 300 m usw. mit dem Sendeimpuls zusammen. Um diese Werte zu erfassen. kann die Lotfolge von 10 pro Sekunde auf z. B. 11 umgeschaltet werden. With a plumbing sequence of Io per second, measurements of depths equal to or greater than 75 m, the values 75 m, 150 m, 225 m, 300 m etc. with the transmission pulse together. To capture these values. can the solder sequence from 10 per second to z. B. 11 can be switched.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED70152D DE735005C (en) | 1935-04-16 | 1935-04-16 | Procedure for distance measurement in any media by rhythmically sending pulses |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED70152D DE735005C (en) | 1935-04-16 | 1935-04-16 | Procedure for distance measurement in any media by rhythmically sending pulses |
Publications (1)
Publication Number | Publication Date |
---|---|
DE735005C true DE735005C (en) | 1943-05-04 |
Family
ID=7060474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED70152D Expired DE735005C (en) | 1935-04-16 | 1935-04-16 | Procedure for distance measurement in any media by rhythmically sending pulses |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE735005C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE919869C (en) * | 1951-11-16 | 1954-11-04 | Electroacustic Ges M B H | Echo sounder device with device for setting a partial sounding range |
DE1225522B (en) * | 1959-02-23 | 1966-09-22 | Leendert Meijer | Method and device for echo sounder with sound pulses changeable sound sequence |
-
1935
- 1935-04-16 DE DED70152D patent/DE735005C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE919869C (en) * | 1951-11-16 | 1954-11-04 | Electroacustic Ges M B H | Echo sounder device with device for setting a partial sounding range |
DE1225522B (en) * | 1959-02-23 | 1966-09-22 | Leendert Meijer | Method and device for echo sounder with sound pulses changeable sound sequence |
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