JPS62102184U - - Google Patents

Info

Publication number
JPS62102184U
JPS62102184U JP19466985U JP19466985U JPS62102184U JP S62102184 U JPS62102184 U JP S62102184U JP 19466985 U JP19466985 U JP 19466985U JP 19466985 U JP19466985 U JP 19466985U JP S62102184 U JPS62102184 U JP S62102184U
Authority
JP
Japan
Prior art keywords
speed
sensed object
sensing device
frequency
local oscillation
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
JP19466985U
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 JP19466985U priority Critical patent/JPS62102184U/ja
Publication of JPS62102184U publication Critical patent/JPS62102184U/ja
Pending legal-status Critical Current

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Landscapes

  • 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図は本考案に係る超音波式速度判別感知装
置の一実施例を示すブロツク図、第２図は超音波
送受器から被感知物体に向けて超音波を放射した
状態を示す超音波放射図、第３図は帯域フイルタ
における帯域幅の一実施例を示す図である。 ５：混合器、１１：処理手段、Ａ：被感知物体
。 Fig. 1 is a block diagram showing an embodiment of the ultrasonic speed discrimination and sensing device according to the present invention, and Fig. 2 is a block diagram showing the state in which ultrasonic waves are emitted from an ultrasonic transmitter/receiver toward a sensed object. FIG. 3 is a diagram showing an example of the bandwidth in a bandpass filter. 5: Mixer, 11: Processing means, A: Object to be sensed.

Claims (1)

【実用新案登録請求の範囲】 被感知物体Ａに向けて放射された送信波(f)Ｈ
ｚと、前記被感知物体Ａにあたつて反射した受信
波(f±Δf)Ｈｚとの差(±Δf)Ｈｚから前記被感
知物体Ａの通過速度を判定するドツプラ効果を利
用した超音波式速度判別感知装置において、 前記受信波(f±Δf)Ｈｚと局部発振周波数(fs)
Ｈｚとを混合し、かつ低速通過あるいは高速通過
等の任意な速度帯域を有する前記被感知物体Ａを
、前記局部発振周波数(fs)Ｈｚを変えることによ
りドツプラ偏位周波数(±Δf)を含んだ中間周波
数(fd)Ｈｚのみを抽出する処理手段１１で検出す
ることのできる混合器５を設けたことを特徴する
超音波式速度判別感知装置。[Scope of claim for utility model registration] Transmitted wave (f)H radiated toward sensed object A
Ultrasonic method using the Doppler effect that determines the passing speed of the sensed object A from the difference (±Δf)Hz between the received wave (f±Δf)Hz that hit the sensed object A and reflected. In the speed discrimination sensing device, the received wave (f±Δf) Hz and the local oscillation frequency (fs)
By changing the local oscillation frequency (fs) Hz, the sensed object A having an arbitrary speed band such as low-speed passage or high-speed passage can be mixed with Doppler deviation frequency (±Δf). An ultrasonic speed discrimination and sensing device characterized by being provided with a mixer 5 that can be detected by a processing means 11 that extracts only an intermediate frequency (fd) Hz.
JP19466985U 1985-12-18 1985-12-18 Pending JPS62102184U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19466985U JPS62102184U (en) 1985-12-18 1985-12-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19466985U JPS62102184U (en) 1985-12-18 1985-12-18

Publications (1)

Publication Number Publication Date
JPS62102184U true JPS62102184U (en) 1987-06-29

Family

ID=31151849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19466985U Pending JPS62102184U (en) 1985-12-18 1985-12-18

Country Status (1)

Country Link
JP (1) JPS62102184U (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141573A (en) * 1980-04-07 1981-11-05 Toshin Denki Kk Ground speed meter
JPS58122483A (en) * 1982-01-14 1983-07-21 Hitachi Ltd Sound listening system of active sonar
JPS58135478A (en) * 1982-02-04 1983-08-12 Hitachi Heating Appliance Co Ltd Ultrasonic speedometer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56141573A (en) * 1980-04-07 1981-11-05 Toshin Denki Kk Ground speed meter
JPS58122483A (en) * 1982-01-14 1983-07-21 Hitachi Ltd Sound listening system of active sonar
JPS58135478A (en) * 1982-02-04 1983-08-12 Hitachi Heating Appliance Co Ltd Ultrasonic speedometer

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