JPS6076669A - Cylinder speed sensor - Google Patents

Cylinder speed sensor

Info

Publication number
JPS6076669A
JPS6076669A JP18530683A JP18530683A JPS6076669A JP S6076669 A JPS6076669 A JP S6076669A JP 18530683 A JP18530683 A JP 18530683A JP 18530683 A JP18530683 A JP 18530683A JP S6076669 A JPS6076669 A JP S6076669A
Authority
JP
Japan
Prior art keywords
piston
cylinder
speed
reference pulse
detection switches
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
JP18530683A
Other languages
Japanese (ja)
Inventor
Yuichi Tomibe
富部 裕一
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.)
NIPPON AUTOM KK
Original Assignee
NIPPON AUTOM KK
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 NIPPON AUTOM KK filed Critical NIPPON AUTOM KK
Priority to JP18530683A priority Critical patent/JPS6076669A/en
Publication of JPS6076669A publication Critical patent/JPS6076669A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/64Devices characterised by the determination of the time taken to traverse a fixed distance
    • G01P3/66Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means

Abstract

PURPOSE:To make it possible to perform speed detection, by a simple accessory circuit constituted so as to measure a time required in passing a piston between two detection switches, parallelly arranged along the moving direction of said piston, by using a reference pulse. CONSTITUTION:The piston 2 moving in a cylinder 1 is formed of a magnetic body while a cylinder speed sensor 3 is directly attached to the cylinder 1 and equipped with parallelly provided detection switches SW-1, SW-2. In this sensor 3, a measuring circuit consisting of an oscillator 4 for generating a reference pulse and AND gates 5, 6 is assembled. The reference pulse sent out from the AND gate 6 corresponding to the operation of the detection switches SW-1, SW-2 is applied to a counter 7 and an address is indicated on the basis of the value of the counter 7 by memory 8 such as ROM and the content of said address is displayed as the moving speed of the piston 2 by a display device 9.

Description

【発明の詳細な説明】 との発明はシリンダーのピストンのftZ 動スピード
を検出するセンサに関するものである。
DETAILED DESCRIPTION OF THE INVENTION The invention relates to a sensor for detecting the ftZ movement speed of a piston in a cylinder.

一般に、移動体の速度を検出する場合、超音波等をその
移動体に発射し、反射波長との周派数の差異を利用して
速度検出を行なういわゆるドラブラー効果を利用した速
度測定機や、あるいはスピードガンのように限定はれた
2点間の通過時間を測定して速度検出を行々う装置等が
用いられている。
Generally, when detecting the speed of a moving object, a speed measuring device that uses the so-called Drabler effect, which emits ultrasonic waves or the like to the moving object and uses the difference in frequency with the reflected wavelength to detect the speed, is used. Alternatively, a device such as a speed gun that detects speed by measuring the passing time between two limited points is used.

ところで、油圧、空圧等のシリンダーにおいて、そのピ
ストンの移動速度を検出したいような場合があるが、上
述のような測定機や装置では、移動体とじてシリンダー
内部を動くピストンのスピードを簡単には検出すること
ができず、従来、はかる必要性がある場合にシリンダー
に面接数句けてその速度を検出できるものがなかった。
By the way, there are times when you want to detect the moving speed of a piston in a hydraulic, pneumatic, etc. cylinder, but with the measuring instruments and devices mentioned above, it is easy to detect the speed of the piston moving inside the cylinder as a moving object. Until now, if there was a need to measure the speed of a cylinder, there was no way to detect its speed by interviewing the cylinder several times.

この発明は上記のような点に鑑みてなされたもので、シ
リンダーに直接数句は可能で、しかも簡単な付属回路で
速度検出が行なえるようにすることを目的とするもので
ある。
The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to enable speed detection to be performed directly on the cylinder and with a simple attached circuit.

以下、この発明の一実施例を図面に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.

第1図及び第2図はこの発明の一実施例のシリンダース
ピードセンサの取付は秋態及びそのセンサの回路構成を
示す、 第1図において、lは油圧、空圧等のシリンダー、2は
そのシリンダー内を移動するピストンで、この実施例で
は、上記ピストン2は磁性体で形成はれている。−,3
はシリンダー1に直接取付けられたシリンダースピード
センサで、このシリンダースピードセンサ3は、ピスト
ン2の動きを検出するべくピストン2の移動方向に沿っ
て並設した2つの検出スイッチ5W−1,5W−2を備
えている、これら検出スイッチ5w−1,sw−zは、
上記ピストン2の材質が磁性体であるから、その磁性体
I/Cより動作する形式の鉄板近接スイッチが用いられ
ている。
Figures 1 and 2 show the mounting state of a cylinder speed sensor and the circuit configuration of the sensor according to an embodiment of the present invention. A piston moves within a cylinder, and in this embodiment, the piston 2 is made of a magnetic material. -, 3
is a cylinder speed sensor directly attached to the cylinder 1, and this cylinder speed sensor 3 has two detection switches 5W-1 and 5W-2 arranged in parallel along the moving direction of the piston 2 to detect the movement of the piston 2. These detection switches 5w-1, sw-z are equipped with
Since the piston 2 is made of a magnetic material, an iron plate proximity switch operated by the magnetic I/C is used.

また上記/リンダ−スピードセンサ3には、第2図に示
すような測定回路が組み込まれている。すなわち、4は
基準パルスを発生する発振器、5,6はそれぞれps’
HDケートで、后のゲート5には発掘器4からの基準パ
ルスがその一方の入力として供給されると共に、その他
方の入力端と電源ラインt1との間に前記検出スイッチ
5W−1が挿入されている。
Further, the cylinder speed sensor 3 is equipped with a measuring circuit as shown in FIG. That is, 4 is an oscillator that generates a reference pulse, and 5 and 6 are ps', respectively.
In the HD gate, the reference pulse from the excavator 4 is supplied as one input to the rear gate 5, and the detection switch 5W-1 is inserted between the other input terminal and the power line t1. ing.

またANDゲート6には、その一方の入力として上記4
静ノゲート5の出力が供給されると共に、その他方の入
力節は抵抗R】を介して電源ラインt2に、また前記検
出スイッチ5W−2を介してグランドに接緒されている
。、7はこれら検出スイッチ5W−1゜5W−Zの動作
に応じて上記N5TY)ゲート6がら送出これる基準パ
ルスが印力0されるカウンタ、8はそのカウンタ7の値
でアドレスが指定されるリード・オンリー・メモリ(R
OM )等のメモリで、とのメモリ8のアドレスには次
のような方法で決定醤れた前記ピストン2の移動スピー
ドを現わす数値が予め書き込まれており、カウンタ7の
値でメモリ8のアドレスが指定されると、そのアドレス
の内容がピストン2の移動スピードとして表示器9に表
示されるようになっている。
Also, the AND gate 6 has the above-mentioned 4 as one input.
The output of the static gate 5 is supplied, and the other input node is connected to the power supply line t2 via the resistor R and to the ground via the detection switch 5W-2. , 7 is a counter to which the reference pulse sent out from the N5TY) gate 6 is applied to 0 in response to the operation of these detection switches 5W-1, 5W-Z, and 8 is an address specified by the value of the counter 7. Read-only memory (R
A numerical value representing the moving speed of the piston 2 determined by the following method is written in advance in the address of the memory 8, such as OM), and the value of the counter 7 is used as the address of the memory 8. When an address is specified, the contents of the address are displayed on the display 9 as the moving speed of the piston 2.

上記メモリ8の内容の決定方法に関しては、例えば検出
スイッチ5w−1,5W−2の間隔を10mm、発振器
4の基準パルスの周波数をIKI−IZとした場合、ピ
ストン2の移動時にこれら検出スイッチ5W−1,5W
−2間を通過する時にカウンタ7でカランl−したパル
ス数Pとピストン2のスピードSとの関係は、次式で表
わされる。
Regarding the method of determining the contents of the memory 8, for example, if the interval between the detection switches 5w-1 and 5W-2 is 10 mm and the frequency of the reference pulse of the oscillator 4 is IKI-IZ, when the piston 2 moves, these detection switches 5W -1,5W
The relationship between the number of pulses P counted by the counter 7 when passing between -2 and the speed S of the piston 2 is expressed by the following equation.

従って、パルス数PとスピードSの対応は次表に示す通
りとなる。
Therefore, the correspondence between the number of pulses P and the speed S is as shown in the following table.

前記したメモリ8のアドレスには、この表のような数値
が史き込まれているのである。
Numerical values as shown in this table are stored in the addresses of the memory 8 mentioned above.

次に上記構成のシリンダースピードセンサ3の動作につ
いて説明する。
Next, the operation of the cylinder speed sensor 3 having the above configuration will be explained.

今、シリンダーlのピストン2が第1図に示すA点に来
だとすると、検出スイッチ5W−1がこれを検知して発
振器4からの基準パルスがカウンタ7に印7J11 i
れ、カウンタ7の内容が増力口する。次に、ピストン2
が移動して第1図のB点に来るど、これが検出スイッチ
5W−Zによって検知でれ、カウンタ7に印加ぜれてい
た基準パルスがその時点で遮断されるため、カウンタ7
の内容が変化しなくなる。カウンタ7に印加プれる基準
パルスにまりカウンタ7の内容は1個づつ増7J11す
るから、前述したパルス数Pとカウンタ7の値は等しく
なり、従って、そのカウンタ7の値で面接メモリ8のア
ドレスを指定すれば、そのアドレスに予め書キ込まれて
いた数値が上記ピストン2の移動スピードを示すものと
して表示器9に表示され、これによす検出スイン5W−
1,5W−2間のピストン2の移動スピードを知ること
ができる。
If the piston 2 of the cylinder 1 is now at the point A shown in FIG.
Then, the contents of the counter 7 are multiplied. Next, piston 2
moves to point B in FIG. 1, this is detected by the detection switch 5W-Z, and the reference pulse applied to the counter 7 is cut off at that point.
The contents of will no longer change. Since the content of the counter 7 is incremented by 1 by 7J11 due to the reference pulse applied to the counter 7, the above-mentioned pulse number P and the value of the counter 7 become equal. Therefore, the value of the counter 7 is used as the address of the interview memory 8. If you specify , the value written in advance at that address will be displayed on the display 9 as indicating the moving speed of the piston 2, and the detection switch 5W-
It is possible to know the moving speed of the piston 2 between 1 and 5W-2.

このようにして、検出スイッチ5W−1,8W−2を並
設し、ピストン2移動時にこれら検出スイッチ5W−i
、5W−2間を通過する時間を測定し、その値でメモリ
8のアドレスを指定することによりピストン2の移動ス
ピードを簡単に検出することができる、しかも、シリン
ダ−1に直接取付けることができ、簡単な回路で高精度
の検出を行なうことができるのみならず、部品点数が少
なく、安価でかつ小型、軽量であるため、特にシリンダ
ーlに増付ける場合に好適でもちる、 なお、上記実Mp例では、シリンダー1のピストン2の
拐質がθ?性体であって、各検出スイッチ5W−1,8
W−2としてはその硼性体により動作する鉄板近接シリ
ンダースイッチを用いた場合を例にどったが、この発明
はこれに限らず、ピストン2に被検知体としてピストン
2と共に移動する磁石を覗り句け、かつ検出スイッチと
してはその磁力により動作する磁気近接シリンダースイ
ッチを利用し、その検出スイッチを被検出体の移動方向
に沿って2つ並設する構成であってもよく、かかる場合
であっても、前述のようにシリンダー1に面接取りイ」
け可能で、かつ1フ1〕単な付属回路で検出することが
できる等上記実施例と同様の効果を奏する1、 jJ、上のように、この発明は、シリンダーに直接散り
イマ」けることが可能であり、しかも簡単な付属回路を
用いて/リンダー内部を動くピストンの移動スピードを
高1B度で検出することができ、また部品点数が少なく
安価、小型、軽量化が図れるため、特にシリンダーに取
り付けるスピードセンサとして好適である等の特長を有
する。
In this way, the detection switches 5W-1 and 8W-2 are arranged in parallel, and when the piston 2 moves, these detection switches 5W-i
, 5W-2, and by specifying the address of the memory 8 with that value, the moving speed of the piston 2 can be easily detected.Moreover, it can be directly attached to the cylinder 1. Not only can high-precision detection be performed with a simple circuit, but it also has a small number of parts, is inexpensive, small, and lightweight, so it is particularly suitable for adding to cylinder l. In the example, the particle size of piston 2 of cylinder 1 is θ? each detection switch 5W-1, 8
Although W-2 is an example in which an iron plate proximity cylinder switch operated by the borium body is used, the present invention is not limited to this. In addition, as a detection switch, a magnetic proximity cylinder switch operated by its magnetic force may be used, and two such detection switches may be arranged in parallel along the moving direction of the detected object. Even if there is, there will be an interview in cylinder 1 as mentioned above.
As described above, this invention has the advantage of being able to be directly dissipated into the cylinder. Moreover, the moving speed of the piston moving inside the cylinder can be detected at a high 1B degree using a simple attached circuit, and the number of parts is small, making it inexpensive, compact, and lightweight. It has features such as being suitable as a speed sensor to be attached to.

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

第1図はこの発明の一実施f11のシリンダースピード
センサのをり付は状態を示す図、第2図はその測定回路
の回路構成の一例を示す回路図である。 2・・・ピストン、7・・・カウンタ、8・・・メモリ
、5W−1,5W−2・・・(寅出スイッチ。
FIG. 1 is a diagram showing the mounting state of a cylinder speed sensor according to an embodiment f11 of the present invention, and FIG. 2 is a circuit diagram showing an example of the circuit configuration of the measuring circuit. 2... Piston, 7... Counter, 8... Memory, 5W-1, 5W-2... (Toraide switch.

Claims (1)

【特許請求の範囲】[Claims] シリンダーのピストンの動きを検出するべく上記ピスト
ンまたはそのピストンと共に移動する被検出体の移動方
向に沿って並設して取付けた2つの検出スイッチと、上
記ピストンの移動時に上記各検出スイッチ間を通過する
時間を基準パルスを利用して測定する回路と、その測定
値でアドレスが指定されることにより予めアドレスに記
憶させた数値を上記ピストンの移動スピードとして表示
させるだめのメモリとを協えたことを特徴とするシリン
ダースピードセンサ。
Two detection switches installed in parallel along the movement direction of the piston or a detected object that moves together with the piston in order to detect the movement of the piston of the cylinder, and a sensor that passes between the detection switches when the piston moves. It is possible to combine a circuit that measures the time taken by the reference pulse using a reference pulse, and a memory that, when an address is specified by the measured value, displays a numerical value stored in the address in advance as the moving speed of the piston. Characteristic cylinder speed sensor.
JP18530683A 1983-10-04 1983-10-04 Cylinder speed sensor Pending JPS6076669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18530683A JPS6076669A (en) 1983-10-04 1983-10-04 Cylinder speed sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18530683A JPS6076669A (en) 1983-10-04 1983-10-04 Cylinder speed sensor

Publications (1)

Publication Number Publication Date
JPS6076669A true JPS6076669A (en) 1985-05-01

Family

ID=16168546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18530683A Pending JPS6076669A (en) 1983-10-04 1983-10-04 Cylinder speed sensor

Country Status (1)

Country Link
JP (1) JPS6076669A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102590545A (en) * 2012-03-23 2012-07-18 江南大学 Air cylinder velocity-measuring system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5446586A (en) * 1977-09-20 1979-04-12 Toshiba Machine Co Ltd Device for measuring injection speed of die caster

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5446586A (en) * 1977-09-20 1979-04-12 Toshiba Machine Co Ltd Device for measuring injection speed of die caster

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102590545A (en) * 2012-03-23 2012-07-18 江南大学 Air cylinder velocity-measuring system

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