JPH0232062U - - Google Patents

Info

Publication number
JPH0232062U
JPH0232062U JP10951988U JP10951988U JPH0232062U JP H0232062 U JPH0232062 U JP H0232062U JP 10951988 U JP10951988 U JP 10951988U JP 10951988 U JP10951988 U JP 10951988U JP H0232062 U JPH0232062 U JP H0232062U
Authority
JP
Japan
Prior art keywords
flow velocity
circuit
velocity sensor
bridge circuit
sensor body
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
Application number
JP10951988U
Other languages
Japanese (ja)
Other versions
JPH065635Y2 (en
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 JP1988109519U priority Critical patent/JPH065635Y2/en
Publication of JPH0232062U publication Critical patent/JPH0232062U/ja
Application granted granted Critical
Publication of JPH065635Y2 publication Critical patent/JPH065635Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

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

第１図は本考案の一実施例による風速センサの
ブロツク図、第２図はその動作を示す波形図、第
３図は従来の風速センサの回路構成を示すブロツ
ク図である。 １……風速センサ素子、２……温度補償素子、
３……ブリツジ回路、４……定電圧源、５……差
動増幅器、１１……パルス幅変調器、１２……基
準クロツク発生器、１３……デユーテイ可変型パ
ルス発生回路、１４……スイツチ回路、２０……
プローブ、２１……風速センサ本体。 FIG. 1 is a block diagram of a wind speed sensor according to an embodiment of the present invention, FIG. 2 is a waveform diagram showing its operation, and FIG. 3 is a block diagram showing the circuit configuration of a conventional wind speed sensor. 1... Wind speed sensor element, 2... Temperature compensation element,
3... Bridge circuit, 4... Constant voltage source, 5... Differential amplifier, 11... Pulse width modulator, 12... Reference clock generator, 13... Variable duty pulse generation circuit, 14... Switch Circuit, 20...
Probe, 21...Wind speed sensor body.

Claims (1)

【実用新案登録請求の範囲】 (1) 流速によつて抵抗値が変化する流速センサ
素子をブリツジ回路の一辺に有するブリツジ回路
と、 前記ブリツジ回路の両端の電圧差を増幅する差
動増幅器と、 前記差動増幅器の出力に対応したデユーテイ比
を有するデユーテイ可変型パルス発生回路と、 前記デユーテイ可変型パルス発生回路の出力に
基づいて前記ブリツジ回路の電源の供給を制御す
るスイツチ回路と、を有することを特徴とする流
速センサ。 (2) 流速センサ本体とプローブとを具備し、前
記流速センサ本体は、前記スイツチ回路に供給す
る電源とブリツジ回路に流れる電流に基づいて流
速信号を処理する信号処理回路と、を有するもの
であり、 前記プローブは、前記ブリツジ回路及び前記ス
イツチ回路を含んで構成されていることを特徴と
する請求項１に記載の流速センサ。[Claims for Utility Model Registration] (1) A bridge circuit that has a flow velocity sensor element whose resistance value changes depending on the flow velocity on one side of the bridge circuit, and a differential amplifier that amplifies the voltage difference between both ends of the bridge circuit. A variable duty pulse generating circuit having a duty ratio corresponding to the output of the differential amplifier; and a switch circuit controlling power supply to the bridge circuit based on the output of the variable duty pulse generating circuit. A flow velocity sensor featuring: (2) The flow velocity sensor body includes a flow velocity sensor body and a probe, and the flow velocity sensor body has a power supply supplied to the switch circuit and a signal processing circuit that processes a flow velocity signal based on a current flowing through the bridge circuit. 2. The flow velocity sensor according to claim 1, wherein the probe includes the bridge circuit and the switch circuit.
JP1988109519U 1988-08-19 1988-08-19 Flow velocity sensor Expired - Lifetime JPH065635Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988109519U JPH065635Y2 (en) 1988-08-19 1988-08-19 Flow velocity sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988109519U JPH065635Y2 (en) 1988-08-19 1988-08-19 Flow velocity sensor

Publications (2)

Publication Number Publication Date
JPH0232062U true JPH0232062U (en) 1990-02-28
JPH065635Y2 JPH065635Y2 (en) 1994-02-09

Family

ID=31345837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988109519U Expired - Lifetime JPH065635Y2 (en) 1988-08-19 1988-08-19 Flow velocity sensor

Country Status (1)

Country Link
JP (1) JPH065635Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011527415A (en) * 2008-07-08 2011-10-27 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム Flow sensor system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145359A (en) * 1980-04-15 1981-11-12 Japan Electronic Control Syst Co Ltd Hot-wire type current meter
JPS59136620A (en) * 1982-12-30 1984-08-06 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Measuring device for flow rate of fluid
JPS639170A (en) * 1986-06-30 1988-01-14 Komatsu Ltd Gas laser device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56145359A (en) * 1980-04-15 1981-11-12 Japan Electronic Control Syst Co Ltd Hot-wire type current meter
JPS59136620A (en) * 1982-12-30 1984-08-06 ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング Measuring device for flow rate of fluid
JPS639170A (en) * 1986-06-30 1988-01-14 Komatsu Ltd Gas laser device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011527415A (en) * 2008-07-08 2011-10-27 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム Flow sensor system

Also Published As

Publication number Publication date
JPH065635Y2 (en) 1994-02-09

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