JPH0167589U - - Google Patents
Info
- Publication number
- JPH0167589U JPH0167589U JP1987163385U JP16338587U JPH0167589U JP H0167589 U JPH0167589 U JP H0167589U JP 1987163385 U JP1987163385 U JP 1987163385U JP 16338587 U JP16338587 U JP 16338587U JP H0167589 U JPH0167589 U JP H0167589U
- Authority
- JP
- Japan
- Prior art keywords
- fan
- axis
- phase difference
- receiver
- plane
- 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.)
- Granted
Links
- 241000251468 Actinopterygii Species 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000002592 echocardiography Methods 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の魚体長判別用魚群探知機の実
施例のブロツク図、第２図はＡ受波器の実施例の
構成図、第３図は位相差検出の原理説明図、第４
図はクロスフアンビームの説明参考図であり、図
ａはクロスフアンビームの詳細図、図ｂは同一距
離にあるエコーの受信説明図、第５図はクロスフ
アンビームの狭い範囲を使用する魚体長判別用魚
群探知機のブロツク図である。
１，１′……送波器、２……Ａ受波器、２′…
…受波器、３……Ｂ受波器、４……送信部、５…
…Ｙ１受信部、６……Ｙ２受信部、７……Ｘ１受
信部、８……Ｘ２受信部、９……受信部、１０…
…Ｙ軸位相差検出部、１１……Ｘ軸位相差検出部
、１２……位相ゲート部、１３……表示器、１４
……Ｘ２受波器の中心軸、１５……Ｘ１受波器の
中心軸、１６……Ｘ軸受波器全体の中心軸、１７
―１〜１７―７……超音波振動子、１８……送波
ビーム、１９……受波ビーム、２１……Ｘ１受波
器、２２……Ｘ２受波器、２３……魚のいる方向
。
Fig. 1 is a block diagram of an embodiment of the fish finder for determining fish body length of the present invention, Fig. 2 is a configuration diagram of an embodiment of the A receiver, Fig. 3 is a diagram explaining the principle of phase difference detection, and Fig. 4
The figure is an explanatory reference diagram of the cross-fan beam. Figure a is a detailed diagram of the cross-fan beam, Figure b is a diagram explaining the reception of echoes at the same distance, and Figure 5 is the length of the fish that uses the narrow range of the cross-fan beam. It is a block diagram of a fish finder for discrimination. 1, 1'... Transmitter, 2... A receiver, 2'...
...Receiver, 3...B receiver, 4...Transmitter, 5...
...Y 1 receiving section, 6...Y 2 receiving section, 7...X 1 receiving section, 8...X 2 receiving section, 9... receiving section, 10...
... Y-axis phase difference detection section, 11 ... X-axis phase difference detection section, 12 ... Phase gate section, 13 ... Display, 14
...... X 2 central axis of the receiver, 15... X 1 central axis of the receiver, 16... X axis central axis of the entire receiver, 17
-1~17-7...Ultrasonic transducer, 18...Transmitting beam, 19...Receiving beam, 21... X1 receiver, 22... X2 receiver, 23...Fish present direction.
Claims (1)
探知機において、送波フアンビームを形成する送
波器と；該送波器が形成する送波フアンビームと
扇面が互いに直交し指向軸が該指向軸をもつビー
ムの扇面と直角をなす方向に所定間隔離隔した２
つまたは３つの受波フアンビームを形成するよう
に複数の振動子が配列された第１の受波器と；前
記送波器が形成する送波フアンビームと扇面が互
いに直交し、送波フアンビームの扇面と直角をな
す方向に前記受波フアンビームの指向軸と所定間
隔離隔した指向軸の受波フアンビームを形成する
ように配置された第２の受波器と；目標物の方向
が前記送波フアンビームの中心軸となす角の、扇
面と直角をなす面上における、角度成分を検出す
るＹ軸位相差検出部と；目標物の方向が前記第１
の受波器または第２の受波器で形成された受波フ
アンビームの中心軸となす角の、扇面と直角をな
す面上における、角度成分を検出するＸ軸位相差
検出部と；前記Ｘ軸位相差検出部とＹ軸位相差検
出部で検出された位相差が所定の位相差範囲にあ
ればゲートを開き受信したエコー信号を通過させ
る位相ゲート部と；を具備することを特徴とする
魚体長判別用魚群探知機。 A fish finder that detects fish using a crossed fan beam includes a transmitter that forms a transmitted fan beam; the transmitted fan beam formed by the transmitter and the fan surface are perpendicular to each other, and the directional axis is 2 spaced apart by a predetermined distance in the direction perpendicular to the fan plane of the beam with
a first receiver in which a plurality of transducers are arranged to form one or three receiving fan beams; a second wave receiver arranged to form a receiving fan beam with a directional axis spaced a predetermined distance from the directional axis of the receiving fan beam in a direction perpendicular to the fan plane of the beam; a Y-axis phase difference detection unit that detects an angular component of an angle formed with the central axis of the transmitted fan beam on a plane perpendicular to the fan plane;
an X-axis phase difference detection unit that detects an angular component on a plane perpendicular to the fan surface of an angle formed with the central axis of the received fan beam formed by the receiver or the second receiver; A phase gate section that opens a gate and allows the received echo signal to pass if the phase difference detected by the X-axis phase difference detection section and the Y-axis phase difference detection section is within a predetermined phase difference range; Fish finder for determining fish length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16338587U JPH0643748Y2 (en) | 1987-10-26 | 1987-10-26 | Fish finder for fish length discrimination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16338587U JPH0643748Y2 (en) | 1987-10-26 | 1987-10-26 | Fish finder for fish length discrimination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0167589U true JPH0167589U (en) | 1989-05-01 |
| JPH0643748Y2 JPH0643748Y2 (en) | 1994-11-14 |
Family
ID=31448066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16338587U Expired - Lifetime JPH0643748Y2 (en) | 1987-10-26 | 1987-10-26 | Fish finder for fish length discrimination |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643748Y2 (en) |
-
1987
- 1987-10-26 JP JP16338587U patent/JPH0643748Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0643748Y2 (en) | 1994-11-14 |
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