JPH0248886U - - Google Patents

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Publication number
JPH0248886U
JPH0248886U JP12742188U JP12742188U JPH0248886U JP H0248886 U JPH0248886 U JP H0248886U JP 12742188 U JP12742188 U JP 12742188U JP 12742188 U JP12742188 U JP 12742188U JP H0248886 U JPH0248886 U JP H0248886U
Authority
JP
Japan
Prior art keywords
frequency
ultrasonic
ultrasonic element
resonant frequency
driving frequency
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
Application number
JP12742188U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP12742188U priority Critical patent/JPH0248886U/ja
Publication of JPH0248886U publication Critical patent/JPH0248886U/ja
Pending legal-status Critical Current

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  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例による超音波装置
を示すブロツク接続図、第２図は第１図のブロツ
ク各部の信号を示すタイミングチヤート図、第３
図はこの考案による駆動周波数の変化帯域幅を示
す駆動レベル―駆動周波数特性図、第４図は時間
分解能が高い場合に設定されるデータ列の実施を
説明する表図、第５図は超音波素子の共振周波数
の変化状況を示す電気音響変換効率―共振周波数
特性図である。 ３…駆動周波数変化回路、５…超音波素子。 FIG. 1 is a block connection diagram showing an ultrasonic device according to an embodiment of this invention, FIG. 2 is a timing chart showing signals of each part of the block in FIG. 1, and FIG.
The figure is a drive level-drive frequency characteristic diagram showing the change bandwidth of the drive frequency according to this invention, Figure 4 is a table explaining the implementation of data strings set when the time resolution is high, and Figure 5 is an ultrasonic wave. FIG. 3 is an electroacoustic conversion efficiency vs. resonance frequency characteristic diagram showing changes in the resonance frequency of the element. 3... Drive frequency change circuit, 5... Ultrasonic element.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 所定の共振周波数を持つ超音波素子と、上記共
振周波数を含む一定の周波数帯域幅内で、上記超
音波素子の駆動周波数を時間とともに変化させる
駆動周波数変化回路とを備えた超音波装置。 An ultrasonic device comprising: an ultrasonic element having a predetermined resonant frequency; and a driving frequency changing circuit that changes the driving frequency of the ultrasonic element over time within a certain frequency bandwidth that includes the resonant frequency.
JP12742188U 1988-09-30 1988-09-30 Pending JPH0248886U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12742188U JPH0248886U (en) 1988-09-30 1988-09-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12742188U JPH0248886U (en) 1988-09-30 1988-09-30

Publications (1)

Publication Number Publication Date
JPH0248886U true JPH0248886U (en) 1990-04-04

Family

ID=31379843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12742188U Pending JPH0248886U (en) 1988-09-30 1988-09-30

Country Status (1)

Country Link
JP (1) JPH0248886U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209192A (en) * 1984-04-02 1985-10-21 Omron Tateisi Electronics Co Ultrasonic body detector
JPS62131622A (en) * 1985-12-03 1987-06-13 Fujitsu Ltd Programmable variable wavelength oscillator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209192A (en) * 1984-04-02 1985-10-21 Omron Tateisi Electronics Co Ultrasonic body detector
JPS62131622A (en) * 1985-12-03 1987-06-13 Fujitsu Ltd Programmable variable wavelength oscillator

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