JPS6357590U - - Google Patents
Info
- Publication number
- JPS6357590U JPS6357590U JP15021286U JP15021286U JPS6357590U JP S6357590 U JPS6357590 U JP S6357590U JP 15021286 U JP15021286 U JP 15021286U JP 15021286 U JP15021286 U JP 15021286U JP S6357590 U JPS6357590 U JP S6357590U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- averaging
- frequencies
- detection
- added
- 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
Links
- 238000012935 Averaging Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 241000251468 Actinopterygii Species 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000003321 amplification Effects 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図は第１図の各部における出力波形図、第３図は
従来の受信装置のブロツク図である。
１１〜４３…送信機、２１〜２３…送受波器、
３１〜３３…前置増幅器、４０〜４３…固定利得
回路、５０〜５３……ＴＶＧ回路、６０…周波数
発生回路、７１〜７３…変調回路、８１〜８３…
検波回路、９０，１１０…第１、第２の加算平均
回路、１００…制御回路。
Fig. 1 is a block diagram of an embodiment of the present invention;
The figure is an output waveform diagram of each part of FIG. 1, and FIG. 3 is a block diagram of a conventional receiving device. 11-43...Transmitter, 21-23...Transducer/receiver,
31-33...Preamplifier, 40-43...Fixed gain circuit, 50-53...TVG circuit, 60...Frequency generation circuit, 71-73...Modulation circuit, 81-83...
Detection circuit, 90, 110...first and second averaging circuits, 100...control circuit.
Claims (1)
式による計量用魚群探知機において、該複数の周
波数に対応する前置増幅器の感度補正された出力
を第１の加算平均回路に加えるようにし、この加
算平均波を１チヤンネルで構成される固定利得回
路及ＴＶＧ回路を通して規定の増幅率で増幅し、
かつ魚群等水中浮遊物の距離に対応した拡散減衰
及び吸収減衰した出力を、元の周波数対応の変調
回路及び検波回路に供給し、これら複数の検波出
力を第２の加算平均回路に加え加算平均検波出力
を得るようにしたことを特徴とする超音波受信装
置。 In a weighing fish finder using a frequency diversity method using a plurality of frequencies, the sensitivity-corrected output of the preamplifier corresponding to the plurality of frequencies is added to a first averaging circuit, and this averaging wave is Amplify at a specified amplification factor through a fixed gain circuit and TVG circuit consisting of one channel,
Then, outputs that have undergone diffusion attenuation and absorption attenuation corresponding to the distance of floating objects such as schools of fish are supplied to a modulation circuit and a detection circuit corresponding to the original frequency, and these multiple detection outputs are added to a second averaging circuit and averaged. An ultrasonic receiving device characterized in that it obtains a detection output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15021286U JPS6357590U (en) | 1986-09-30 | 1986-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15021286U JPS6357590U (en) | 1986-09-30 | 1986-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6357590U true JPS6357590U (en) | 1988-04-16 |
Family
ID=31066149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15021286U Pending JPS6357590U (en) | 1986-09-30 | 1986-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6357590U (en) |
-
1986
- 1986-09-30 JP JP15021286U patent/JPS6357590U/ja active Pending
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