JPS585210Y2 - Automatic balancing pen recorder - Google Patents
Automatic balancing pen recorderInfo
- Publication number
- JPS585210Y2 JPS585210Y2 JP14931577U JP14931577U JPS585210Y2 JP S585210 Y2 JPS585210 Y2 JP S585210Y2 JP 14931577 U JP14931577 U JP 14931577U JP 14931577 U JP14931577 U JP 14931577U JP S585210 Y2 JPS585210 Y2 JP S585210Y2
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- output
- light
- pen
- voltage
- 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.)
- Expired
Links
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
Description
【考案の詳細な説明】
本考案は、自動平衡形ペン書き記録計において、記録ペ
ンが所定の記録幅を越えた時に、それを光学的に検出し
、記録ペンの移動を制限する制限器の改良に関する。[Detailed description of the invention] The present invention uses a limiter that optically detects when the recording pen exceeds a predetermined recording width and limits the movement of the recording pen in a self-balancing pen recorder. Regarding improvements.
記録紙上を摺動記録する記録ペンの移動許容範囲は予か
しめ規定されている。The permissible range of movement of the recording pen that slides and records on the recording paper is predetermined.
にも拘らず記録ペンが所定、の記録幅を越えることを黙
認すると、ペン駆動部系に過負荷を与えることとなる。Nevertheless, if the recording pen is allowed to exceed the predetermined recording width, an overload will be applied to the pen drive system.
この対策として従来、ペンが所定記録幅を越え、駆動機
構に過負荷が生じた時にスリップする機構、あるいは機
械的にスイッチを動作させ、電気回路により記録ペンの
動作を停止させる手段等が採られていた。Conventionally, countermeasures against this problem include a mechanism that slips when the pen exceeds a predetermined recording width and the drive mechanism is overloaded, or a mechanism that mechanically operates a switch and stops the operation of the recording pen using an electric circuit. was.
しかし、前者においてはスリップ時に音を発生し易く、
特にブラシを有するモータを駆動源として用いているも
のでは重い負荷がががり雑音の発生要因となり、記録計
を含めた測定系に種々の悪影響を与えることが多がった
。However, the former tends to generate noise when slipping,
In particular, in those using a motor with brushes as a drive source, heavy loads cause grinding noise, which often has various adverse effects on the measurement system including the recorder.
後者においてもスイッチの作動音が発生し、また機械的
接点であるため、接触不良や寿命等の点で信頼性を低下
させていた。In the latter case, the switch also generates operating noise, and since it is a mechanical contact, reliability is reduced in terms of poor contact and shortened lifespan.
そこで本考案は、光発生器と光検知器とを用いた無接触
のスイッチで制限器を構成することにより、上述の問題
点を解消するものである。Therefore, the present invention solves the above-mentioned problems by constructing a limiter with a non-contact switch using a light generator and a light detector.
以下、本考案の一実施例を説明する。An embodiment of the present invention will be described below.
図において1は、たとえば発光ダイオードのごとき光発
生器であり、発生する光は通常フオl−)ランジスタの
ごとき光検知器2で受け、充電変換を行なっている。In the figure, reference numeral 1 denotes a light generator, such as a light emitting diode, and the generated light is received by a photodetector 2, usually a phototransistor, for charging and conversion.
3は記録ペン(図示せず)と連動して移動する光遮蔽板
であり、光発生器1と光検知器2との間で光路の開閉を
行なう。Reference numeral 3 denotes a light shielding plate that moves in conjunction with a recording pen (not shown), and opens and closes the optical path between the light generator 1 and the photodetector 2.
4はスイッチング用トランジスタのごとき開閉器であり
、5は比較器である。4 is a switch such as a switching transistor, and 5 is a comparator.
6は比較電圧発生器である。次に、この回路の作用につ
いて述べる。6 is a comparison voltage generator. Next, the operation of this circuit will be described.
比較器5では入力電圧と、比較電圧発生器6からの比較
電圧とを比較し、両人力の差を検出し、その差の電圧を
電流に変換し、ペン駆動部を動作させ、記録ペンを動作
させる。The comparator 5 compares the input voltage with the comparison voltage from the comparison voltage generator 6, detects the difference in power between the two, converts the voltage difference into a current, operates the pen drive unit, and starts the recording pen. make it work.
この時、比較電圧発生器6の比較電圧が記録ペンの位置
に比例して変化し、比較器5の出力が零になるまで記録
ペンを移動させる。At this time, the comparison voltage of the comparison voltage generator 6 changes in proportion to the position of the recording pen, and the recording pen is moved until the output of the comparator 5 becomes zero.
以上の作用は、一般的な自動平衡形記録計のサーボ系の
比較回路の説明であり、通常使用されているものである
。The above operation is an explanation of the comparison circuit of the servo system of a general automatic balancing recorder, and is commonly used.
しかしながら、単に上記構成のみでは記録ペンが所定記
録幅を越えた位置で平衡状態になるような入力が比較器
5に入ってきた場合、比較電圧と入力電圧との差が零に
なるまで比較器5の出力は変化しないため差の電圧が残
り、前述したごとくペン駆動部に過大電流が流れ、過負
荷が加わることとなり種々の弊害を生じる。However, with only the above configuration, if an input that causes the recording pen to reach an equilibrium state at a position exceeding a predetermined recording width enters the comparator 5, the comparator 5 will continue to operate until the difference between the comparison voltage and the input voltage becomes zero. Since the output of the pen drive unit 5 does not change, a voltage difference remains, and as described above, an excessive current flows to the pen drive unit, resulting in an overload and various problems.
そこで、本考案は光発生器1と光検知器2等で制限器を
構成することにより、上記事態の生じた際に比較器5の
出力電圧を強制的に零または零に近い状態にすることに
より前記問題点を解梢する。Therefore, the present invention is capable of forcibly bringing the output voltage of the comparator 5 to zero or close to zero when the above situation occurs by configuring a limiter with the light generator 1, the light detector 2, etc. This solves the above problem.
すなわち、通常、光発生器1より発する光は光検知器2
に達しており、その時、光検知器2は導通状態になって
いる。That is, normally, the light emitted from the light generator 1 is transmitted to the light detector 2.
, and at that time, the photodetector 2 is in a conductive state.
したがって光検知器2であるフォトトランジスタのコレ
クタ電圧は下がり、スイッチング用トランジスタ4にベ
ース電流を供給できず、スイッチング用トランジスタ4
のコレクタ・エミッタ間は遮断されているため比較器5
の出力に何の影響も与えない。Therefore, the collector voltage of the phototransistor that is the photodetector 2 decreases, and the base current cannot be supplied to the switching transistor 4.
Since the collector and emitter of is cut off, comparator 5
has no effect on the output.
ここで記録ペンが所定記録幅を越えた時には、記録ペン
と共動して遮蔽板3が光発生器1と光検知器2との間に
移動介在して光路をさえぎり、光検知器2が遮断され、
すなわち、光検知器2のコレクタ電流が流れなくなる。Here, when the recording pen exceeds the predetermined recording width, the shielding plate 3 moves and intervenes between the light generator 1 and the photodetector 2 in cooperation with the recording pen, blocking the optical path, and the photodetector 2 cut off,
That is, the collector current of the photodetector 2 stops flowing.
したがって比較器5の出力に正極性の電圧が発生してい
ても、スイッチング用トランジスタ3に電源からベース
電流が供給され、スイッチング用トランジスタ3は正極
性の電圧のみ導通状態となり、それ故比較器5の出力が
、その出力に直列に接続されている抵抗器の電圧降下に
より、コレクタエミッタ間の飽和電圧にまで下げること
ができ、ペン駆動回路に大電流が流れるのを防止する。Therefore, even if a positive polarity voltage is generated at the output of the comparator 5, the base current is supplied to the switching transistor 3 from the power supply, and the switching transistor 3 becomes conductive only with the positive polarity voltage, so that the comparator 5 The output of the pen can be reduced to the collector-emitter saturation voltage by the voltage drop of the resistor connected in series with the output, preventing large currents from flowing in the pen drive circuit.
なお、比較器5の出力に負極性の電圧が発生するような
場合には、フォトトランジスタ2とスイッチング用トラ
ンジスタ4と電源の極性を逆にすることにより同様の働
きを行なわしめ得る。Incidentally, when a negative polarity voltage is generated at the output of the comparator 5, the same function can be achieved by reversing the polarities of the phototransistor 2, the switching transistor 4, and the power supply.
以上述べたごとく本考案は、比較器の出力に開閉器を介
して制限器を設け、この制限器を光発生器と光検知器と
で構成しており、しかも、記録ペンと共動する光遮蔽板
が光発生器と光検知器との間に介在可能に設けられてお
り、したがって記録ペンの移動に伴って光遮蔽板が光路
をさえぎれば光検知器の出力が開閉器を介して比較器に
加えられて比較器の出力を制限し、記録ペンの移動を制
限するものである。As described above, the present invention provides a limiter to the output of the comparator via a switch, and this limiter is composed of a light generator and a light detector. A shielding plate is interposed between the light generator and the photodetector. Therefore, if the light shielding plate blocks the optical path as the recording pen moves, the output of the photodetector will be routed through the switch. It is added to the comparator to limit the output of the comparator and limit the movement of the recording pen.
図は、本考案の一実施例を示す回路図。
1:光発生器、2:光検知器、3:光遮弊板、4:開閉
器、5:比較器。The figure is a circuit diagram showing an embodiment of the present invention. 1: Light generator, 2: Photodetector, 3: Light blocking plate, 4: Switch, 5: Comparator.
Claims (1)
ンを動作させるものにおいて、 前記比較器5の出力に、開閉器4を介して前記比較器5
の出力を制限する制限器を設け、この制限器が、光発生
器1と光検知器2とで構成されており、 この光発生器1と光検知器2との間に介在可能にして記
録ペンと共動する光遮蔽板3が設置されており、 この光遮蔽板3が介在したときに、前記光検知器2の出
力が前記開閉器4を介して前記比較器5に加わり、この
比較器5の出力を制限することを特徴とする自動平衡形
ペン書き記録計。[Claims for Utility Model Registration] In a device that operates a recording pen by detecting the difference between an input voltage and a comparison voltage with a comparator 5, the comparator 5 is connected to the output of the comparator 5 via a switch 4.
A limiter is provided to limit the output of the light source, and this limiter is composed of a light generator 1 and a light detector 2, and can be interposed between the light generator 1 and the light detector 2 to record data. A light shielding plate 3 that operates together with the pen is installed, and when this light shielding plate 3 intervenes, the output of the photodetector 2 is applied to the comparator 5 via the switch 4, and this comparison is performed. A self-balancing pen writing recorder characterized in that the output of the device 5 is limited.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14931577U JPS585210Y2 (en) | 1977-11-07 | 1977-11-07 | Automatic balancing pen recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14931577U JPS585210Y2 (en) | 1977-11-07 | 1977-11-07 | Automatic balancing pen recorder |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5475152U JPS5475152U (en) | 1979-05-28 |
JPS585210Y2 true JPS585210Y2 (en) | 1983-01-28 |
Family
ID=29132515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14931577U Expired JPS585210Y2 (en) | 1977-11-07 | 1977-11-07 | Automatic balancing pen recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS585210Y2 (en) |
-
1977
- 1977-11-07 JP JP14931577U patent/JPS585210Y2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5475152U (en) | 1979-05-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2019936C (en) | Semiconductor laser driving circuit | |
JPS585210Y2 (en) | Automatic balancing pen recorder | |
EP0585140B1 (en) | Motor drive circuit | |
EP0827141B1 (en) | Laser control circuit in recordable optical disk drive | |
KR930007959Y1 (en) | Over-voltage detecting circuit using photo-coupler | |
JPS6126994Y2 (en) | ||
JPS6338423Y2 (en) | ||
JPS607554Y2 (en) | Muting drive circuit | |
JPS5918873Y2 (en) | Drive motor control switching circuit | |
JPH0648886Y2 (en) | Photo-interrupter | |
KR850000441Y1 (en) | Disc driving apparatus | |
JPS6312418Y2 (en) | ||
JP2515394Y2 (en) | Overcurrent protection circuit for switching power supply | |
JPH0680430B2 (en) | Rotation detector | |
JPH0418609B2 (en) | ||
JPS6211196Y2 (en) | ||
KR910006880B1 (en) | Control device for ac power source | |
JPH0739066Y2 (en) | Control circuit for cassette type tape recorder | |
JPS6040002U (en) | Automatic sensitivity adjustment device for optical sensors | |
JPH0751802Y2 (en) | LD bias alarm circuit | |
JPS593381Y2 (en) | magnetic recording and reproducing device | |
JPS6312413Y2 (en) | ||
JPS6132736B2 (en) | ||
JPH0367310A (en) | Teaching circuit for pulse motor | |
JPH01135084A (en) | Optical output controlling circuit for semiconductor laser |