JPS6258759U

JPS6258759U -

Info

Publication number: JPS6258759U
Application number: JP14636386U
Authority: JP
Priority date: 1986-09-24
Filing date: 1986-09-24
Publication date: 1987-04-11

Description

[Brief explanation of drawings]

図面は本考案の実施例に係り、第１図は電子フ
オーカスの原理を説明するため、直線状に配列さ
れたトランスデユーサ素子とそれに接続された遅
延素子とを示した図、第２図は本考案に係るスイ
ツチマトリクスを使用した超音波送受信回路のブ
ロツク図、第３ａ図乃至第３ｅ図は本考案のスイ
ツチマトリクスを使用してトランスデユーサ素子
と遅延素子との間の接続を形成した５つの場合を
示す図、第４図は本考案の要部を示すスイツチマ
トリクスの回路図、第５図はスイツチマトリクス
の制御回路の回路図である。１，２，３，４，５，６，７……ｎ：電気音響
トランスデユーサ素子、２０：付勢中のグループ
を順次ずらしてゆくための手段の一例たる選択回
路、Ｖ_１，Ｖ_２，Ｖ_３，Ｖ_４……Ｖ_１２：遅延素
子、２４，３４：スイツチマトリクス、Ｔ_１１，
Ｔ_１２，Ｔ_１３，Ｔ_１４，Ｔ_２１，Ｔ_２２，Ｔ_２
３，Ｔ_２４，Ｔ_３１，Ｔ_３２，Ｔ_３３，Ｔ_３４，
Ｔ_４１，Ｔ_４２，Ｔ_４３，Ｔ_４４：半導体スイツ
チ、Ｋ_１，Ｋ_２，Ｋ_３，Ｋ_４：入力線、Ｒ_１，Ｒ
_２，Ｒ_３，Ｒ_４：出力線、Ｌ_１，Ｌ_２，Ｌ_３，Ｌ
_４：制御線、５０：制御回路。 The drawings relate to an embodiment of the present invention, and FIG. 1 is a diagram showing transducer elements arranged in a straight line and delay elements connected thereto in order to explain the principle of electronic focus, and FIG. FIGS. 3a to 3e are block diagrams of an ultrasonic transmitter/receiver circuit using a switch matrix according to the present invention, in which a connection between a transducer element and a delay element is formed using a switch matrix according to the present invention. FIG. 4 is a circuit diagram of a switch matrix showing the main part of the present invention, and FIG. 5 is a circuit diagram of a control circuit of the switch matrix. 1, 2, 3, 4, 5, 6, 7...n: electroacoustic transducer element, 20: selection circuit as an example of means for sequentially shifting the energized groups, V ₁ , V ₂ , V ₃ , V ₄ ...V ₁₂ : Delay element, 24, 34: Switch matrix, T ₁₁ ,
T ₁₂ , T ₁₃ , T ₁₄ , T ₂₁ , T ₂₂ , T _{2
3} , T ₂₄ , T ₃₁ , T ₃₂ , T ₃₃ , T ₃₄ ,
T ₄₁ , T ₄₂ , T ₄₃ , T ₄₄ : Semiconductor switch, K ₁ , K ₂ , K ₃ , K ₄ : Input line, R ₁ , R
₂ , R ₃ , R ₄ : Output line, L ₁ , L ₂ , L ₃ , L
₄ : control line, 50: control circuit.

Claims

[Claims for Utility Model Registration] A plurality of arranged electroacoustic transducer elements for transmitting or receiving ultrasonic signals, and energizing a predetermined group of the arranged electroacoustic transducer elements. and means for sequentially shifting the energized groups, and means for delaying the output signal of the electroacoustic transducer element generated by the received ultrasonic signal so as to delay the output signal of each electroacoustic transducer element of the energized group. In a switch matrix used in an ultrasonic transmitting/receiving device, the switch matrix includes an input terminal, an output terminal, and opening/closing control. a plurality of semiconductor switches arranged in a matrix and having control input terminals for the electroacoustic transducer elements belonging to the group and connected to the input terminals of the switches belonging to the same column; an input line to be connected to the output terminal of the switch belonging to the same row and an output line to be connected to the delay element, and one of the semiconductor switches belonging to each row. and a plurality of control lines connected to one switch belonging to each column so as not to overlap each other, and a connection state of the switches connected to the control line at the time when the group of transducer elements is energized. A switch matrix for an ultrasonic transmitting/receiving device, comprising: a control circuit that sends a signal to one of the control lines to change the switching matrix.