JPH0275926A - Pressure sensor - Google Patents

Pressure sensor

Info

Publication number
JPH0275926A
JPH0275926A JP22801288A JP22801288A JPH0275926A JP H0275926 A JPH0275926 A JP H0275926A JP 22801288 A JP22801288 A JP 22801288A JP 22801288 A JP22801288 A JP 22801288A JP H0275926 A JPH0275926 A JP H0275926A
Authority
JP
Japan
Prior art keywords
amplifier
signal
filter
sensor
main 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.)
Pending
Application number
JP22801288A
Other languages
Japanese (ja)
Inventor
Hisao Takami
高見 久夫
Susumu Narita
晋 成田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KYB Corp
Original Assignee
Kayaba Industry Co Ltd
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 by Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP22801288A priority Critical patent/JPH0275926A/en
Publication of JPH0275926A publication Critical patent/JPH0275926A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To rationalize a controller by assembling a pressure sensor main body, amplifier, and filter into a sensor body. CONSTITUTION:A pressure sensor main body 1 is housed in a sensor body 2 in a state where the main body 1 faces a pressure detecting hole 7. In addition, an amplifier 3 which amplifies a signal current outputted from the main body 1 and filter 4 which regulates the output waveform of the amplifier 3 are assembled in the sensor body 2 in a united state and power supplying wiring 5 and signal wiring 6 which are respectively connected with a power source and controller are drawn out from the body 2. A pressure signal detected by the main body 1 is regulated by the filter 4 after the signal is amplified by the amplifier 3 and the regulated signal is outputted to the outside. Thus the constitution of the controller can be prevented from getting complicated.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、制御装置等に接続して使用される圧力センサ
の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a pressure sensor used by being connected to a control device or the like.

(従来の技術) 圧力を検出する圧力センサは一般に半導体ストレインデ
ージ等を用いて構成されているが、センサ本体から出力
される信号電流は振幅が大きいので、圧力センサを接続
した制御装置等ではこの出力信号をそのまま使用せず、
例えばアンプで増幅した後に、出力波形をフィルタで平
滑化するなどの処理を施すことがある。
(Prior art) A pressure sensor that detects pressure is generally constructed using a semiconductor strainage, etc., but since the signal current output from the sensor body has a large amplitude, a control device etc. connected to the pressure sensor cannot handle this. Do not use the output signal as is,
For example, after amplifying with an amplifier, processing such as smoothing the output waveform with a filter may be performed.

(発明の課題) この場合に、センサ本体は圧力の検出箇所に取り付けら
れ、アンプやフィルタは制御装置に備えてこれらの間を
電源及び信号回路で接続する。
(Problems to be solved by the invention) In this case, the sensor body is attached to a pressure detection location, and the amplifier and filter are provided in the control device, and these are connected by a power supply and a signal circuit.

しかしながら、このようなアンプやフィルタをいちいち
制御装置に備えることは、制御装置の構成を複雑化する
という問題があった。
However, providing each control device with such amplifiers and filters has the problem of complicating the configuration of the control device.

本発明は、このような問題に鑑みてなされたもので、圧
力センサの改良により制御装置の合理化を図ることを目
的とする。
The present invention was made in view of such problems, and an object of the present invention is to rationalize a control device by improving a pressure sensor.

(i題を達成するための手段) このために、本発明は圧力を検出して信号電流を出力す
るセンサ本体と、この信号電流を増幅するアンプと、ア
ンプの出力を整流するフィルタとをセンサボディに一体
に組み込んでいる。
(Means for Achieving Problem i) For this purpose, the present invention provides a sensor body that detects pressure and outputs a signal current, an amplifier that amplifies this signal current, and a filter that rectifies the output of the amplifier. It is integrated into the body.

(作用) アンプとフィルタとをセンサボディに一体に組み込んだ
ので、出力される信号を制御などに直ちに利用すること
ができる。
(Function) Since the amplifier and filter are integrated into the sensor body, the output signal can be immediately used for control, etc.

(実施例) 第1図〜第4図に実施例を示す、 第1図において、1はセンサ本体であり、圧力検出孔7
に望んでセンサボディ2に収装される。
(Example) Examples are shown in FIGS. 1 to 4. In FIG. 1, 1 is the sensor body, and the pressure detection hole 7
It is housed in the sensor body 2 as desired.

また、センサボディ2内にはセンサ本体1から出力され
る信号電流を増幅するアンプ3と、アンプ3の出力波形
を整流するフィルタ4が一体に組み込まれ、センサボデ
ィ2からは電源配線5と信号配線6が取り出され、図示
されない制御装置と電源とに接続される。なお、この実
施例ではフィルタ4は交流分のみ位相を反転して取り出
すローカットフィルタを使用し、フィルタ4の出力がア
ンプ3の出力に再度加W、されるようになっている。
In addition, an amplifier 3 that amplifies the signal current output from the sensor body 1 and a filter 4 that rectifies the output waveform of the amplifier 3 are integrated into the sensor body 2, and the power supply wiring 5 and the signal The wiring 6 is taken out and connected to a control device and a power source (not shown). In this embodiment, the filter 4 is a low-cut filter that inverts the phase of only the alternating current component and extracts it, and the output of the filter 4 is added to the output of the amplifier 3 again.

次に乍用を説明する。Next, I will explain its use.

センサ本体1は圧力を検出して、アンプ3に出力し、こ
の出力信号をアンプ3が増幅した後に、フィルタ4で整
流し、この整流信号とアンプ3の出力を合成して外部へ
と出力する。例えば、アンプ3において増幅されたセン
サ本体1の出力信号が第2図に示すような大きな振幅の
波形である時に、フィルタ4(ローカットフィルタ)は
この波形と位相を反転した第3図のような波形を出力し
、これらの波形の重ね今わせにより信号配線6には第4
図に示すような平滑な信号が出力される。こうして、制
御装置には振幅の大きなセンサ本体1の出力信号ではな
く、フィルタ4により平滑化された直ちに利用可能な信
号が入力されるので、制御vcra側には増幅や整流の
ための特別な回路を設ける必要がなく、制御装置に多数
の圧力センサを接続する場合でも、制御装置の構成が複
雑化する心配はない。
The sensor body 1 detects pressure and outputs it to the amplifier 3. After this output signal is amplified by the amplifier 3, it is rectified by the filter 4, and this rectified signal and the output of the amplifier 3 are combined and output to the outside. . For example, when the output signal of the sensor body 1 amplified by the amplifier 3 has a large amplitude waveform as shown in Fig. 2, the filter 4 (low-cut filter) has a waveform with a phase inverted from this waveform as shown in Fig. 3. By outputting waveforms and superimposing these waveforms, the signal wiring 6 has a fourth
A smooth signal as shown in the figure is output. In this way, the control device receives not the output signal of the sensor body 1 which has a large amplitude, but the immediately usable signal smoothed by the filter 4, so the control device is equipped with a special circuit for amplification and rectification. There is no need to provide a control device, and even when a large number of pressure sensors are connected to the control device, there is no need to worry about complicating the configuration of the control device.

(発明の効果) 以上のように、本発明は圧力センサ本体とアンプとフィ
ルタとをセンサボディに一体に組み込むため、センサボ
ディに接続された信号配線には増幅、整流された信号が
出力される。このため、例えばこの圧力センサを接続し
た制御装置では圧力センサからの入力信号を処理を施す
ことなく、直ちに制御に利用することができ、制御装置
側にセンサ出力の増幅や整流のための回路が不要となる
(Effects of the Invention) As described above, since the present invention integrates the pressure sensor main body, amplifier, and filter into the sensor body, an amplified and rectified signal is output to the signal wiring connected to the sensor body. . Therefore, for example, a control device connected to this pressure sensor can immediately use the input signal from the pressure sensor for control without processing it, and the control device has a circuit for amplifying and rectifying the sensor output. No longer needed.

したがって、数多くの圧力センサを接続する場合におい
ても制御装置のvlF&が複雑化するのを回避できる。
Therefore, even when a large number of pressure sensors are connected, vIF& of the control device can be prevented from becoming complicated.

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

PIIJ1図は本発明の実施例を示す圧力センサの構成
図、第2図はセンサ本体の出力波形を示すグラフ、第3
図はフィルタの出力波形を示すグラフ、第4図は信号配
線の出力波形を示すグラフである。 1・・・センサ本体、2・・・センサボディ、3・・・
アンプ、4・・・フィルタ、5・・・電気配線、6・・
・信号配線。 特許出願人      カヤバエ業株式会社第1図 第21!I     第3r!jjJ 第4図 手続補正書 1.事件の表示 昭和63年特許M第228012号 2 考案の名称 圧力センサ 3、補正をする者 事件との関係 特許出願人 住所  東京都港区浜松町二丁目4番1号世界貿易セン
タービル 名称  (092)   カヤバエ業株式会社4 代理
人 5、補正命令の日1寸     自発 7、補正の内容 (1)明細書第5頁第5行目から第7行目にかけて「第
2図はセンサ本体の出力波形を示すグラフ、第3図はフ
ィルタの出力波形を示すグラフ、第4図は信号配線の出
力波形を示すグラフである。jとあるの念「第2図〜第
4(2Iは同実施例における波形成形の過程を示す波形
図であり、第2図はセンサ本体の出力波形、第3図はロ
ーカットフィルタの出力波形、第4図は第2図と第3図
の和の出力波形を示す、」と補正する。
Figure PIIJ1 is a configuration diagram of a pressure sensor showing an embodiment of the present invention, Figure 2 is a graph showing the output waveform of the sensor body, and Figure 3 is a diagram showing the output waveform of the sensor body.
The figure is a graph showing the output waveform of the filter, and FIG. 4 is the graph showing the output waveform of the signal wiring. 1...Sensor body, 2...Sensor body, 3...
Amplifier, 4...filter, 5...electrical wiring, 6...
・Signal wiring. Patent applicant: Kayabae Gyo Co., Ltd. Figure 1, Figure 21! I 3rd r! jjjJ Figure 4 Procedural Amendment 1. Display of the case 1986 Patent M No. 228012 2 Name of the device Pressure sensor 3, person making the amendment Relationship to the case Patent applicant address 2-4-1 Hamamatsucho, Minato-ku, Tokyo Name of the World Trade Center Building (092) Kayabae Gyo Co., Ltd. 4 Agent 5, 1 sun on the date of the amendment order Voluntary 7, Contents of the amendment (1) Page 5 of the specification, lines 5 to 7, ``Figure 2 shows the output waveform of the sensor body. 3 is a graph showing the output waveform of the filter, and FIG. 4 is a graph showing the output waveform of the signal wiring. FIG. 2 is a waveform diagram showing the forming process, FIG. 2 shows the output waveform of the sensor body, FIG. 3 shows the output waveform of the low-cut filter, and FIG. 4 shows the output waveform of the sum of FIGS. 2 and 3. and correct it.

Claims (1)

【特許請求の範囲】[Claims] 圧力を検出するセンサ本体と、センサ本体の出力を増幅
するアンプと、アンプの出力波形を整流するフィルタと
をセンサボディに一体に組み込んだことを特徴とする圧
力センサ。
A pressure sensor characterized in that a sensor body that detects pressure, an amplifier that amplifies the output of the sensor body, and a filter that rectifies the output waveform of the amplifier are integrated into the sensor body.
JP22801288A 1988-09-12 1988-09-12 Pressure sensor Pending JPH0275926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22801288A JPH0275926A (en) 1988-09-12 1988-09-12 Pressure sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22801288A JPH0275926A (en) 1988-09-12 1988-09-12 Pressure sensor

Publications (1)

Publication Number Publication Date
JPH0275926A true JPH0275926A (en) 1990-03-15

Family

ID=16869798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22801288A Pending JPH0275926A (en) 1988-09-12 1988-09-12 Pressure sensor

Country Status (1)

Country Link
JP (1) JPH0275926A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60166836A (en) * 1984-02-09 1985-08-30 Fuji Electric Corp Res & Dev Ltd Pressure converter
JPS61107127A (en) * 1984-10-26 1986-05-26 テキサス インスツルメンツ インコーポレイテツド Pressure transmission device for cylinder for internal combustion engine
JPS6150240B2 (en) * 1979-03-08 1986-11-01 Nippon Denso Co

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6150240B2 (en) * 1979-03-08 1986-11-01 Nippon Denso Co
JPS60166836A (en) * 1984-02-09 1985-08-30 Fuji Electric Corp Res & Dev Ltd Pressure converter
JPS61107127A (en) * 1984-10-26 1986-05-26 テキサス インスツルメンツ インコーポレイテツド Pressure transmission device for cylinder for internal combustion engine

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