JPH03155217A - Electronic analog timer - Google Patents

Electronic analog timer

Info

Publication number
JPH03155217A
JPH03155217A JP29578989A JP29578989A JPH03155217A JP H03155217 A JPH03155217 A JP H03155217A JP 29578989 A JP29578989 A JP 29578989A JP 29578989 A JP29578989 A JP 29578989A JP H03155217 A JPH03155217 A JP H03155217A
Authority
JP
Japan
Prior art keywords
frequency
circuit
time
frequencies
setting
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
JP29578989A
Other languages
Japanese (ja)
Other versions
JP2739741B2 (en
Inventor
Shigeru Tamefusa
為房 茂
Tetsuo Taikai
大開 哲夫
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.)
Omron Corp
Original Assignee
Omron Corp
Omron Tateisi Electronics Co
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 Omron Corp, Omron Tateisi Electronics Co filed Critical Omron Corp
Priority to JP29578989A priority Critical patent/JP2739741B2/en
Publication of JPH03155217A publication Critical patent/JPH03155217A/en
Application granted granted Critical
Publication of JP2739741B2 publication Critical patent/JP2739741B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Measurement Of Predetermined Time Intervals (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To improve the setting accuracy of a required time limit by comparing a changing frequency with a fixed setting frequency at plural points of time limit when the oscillating frequency of a CR oscillator circuit is changed with an operation knob and activating a notice circuit every time both the frequencies are coincident. CONSTITUTION:When an operation knob 5 is turned along a time scale 6a, as the resistance of a variable resistor VR changes from a small value to a larger value, the oscillating frequency of a CR oscillator circuit 1 changes sequentially from a large to a smaller value. The oscillating frequency of the CR oscillator circuit 1 changing in this way is compared at 5 points with fixedly set comparison range of frequencies by frequency setting devices 7A-7E by comparator circuits 8A-8E sequentially and an LED display circuit 10 is activated every time both the frequencies are coincident and an LED 10A is lighted. Then the lighting number of times of the LED 10A is visually confirmed. Thus, the required time is set with high accuracy to a degree with almost no error.

Description

【発明の詳細な説明】 〈発明の分野) この発明は、たとえば各種の電子機器、電気機器の動作
開始タイミングの制御などに用いられるタイマで、詳し
、くは、内部の時限回路としてCR発振回路を使用して
、その発振回数が規定のカウント数になったときタイム
アツプ信号を出力するように構成されている電子式アナ
ログタイマに関するものである。
[Detailed Description of the Invention] <Field of the Invention> The present invention relates to a timer used, for example, to control the operation start timing of various electronic devices and electrical devices. This invention relates to an electronic analog timer configured to output a time-up signal when the number of oscillations reaches a predetermined count.

(従来技術とその課題〉 第3図は従来の電子式アナログタイマの構成を示すブロ
ック図であり、同図において、lはCR発振回路で、コ
ンデンサCと可変抵抗器VRとを組合わせてなり、その
可変抵抗器VRの抵抗値を可変することにより発振周期
を変更し時限を設定する。2はカウント回路で、上記可
変抵抗器VRの抵抗値可変により設定される時限に対応
する発振回数をカウントし、規定のカウント数になった
とき、出力回路3にタイムアツプ信号を出力する。
(Prior art and its problems) Figure 3 is a block diagram showing the configuration of a conventional electronic analog timer. , by varying the resistance value of the variable resistor VR, the oscillation cycle is changed and a time limit is set. 2 is a counting circuit that counts the number of oscillations corresponding to the time limit set by varying the resistance value of the variable resistor VR. It counts, and when it reaches a predetermined count, it outputs a time-up signal to the output circuit 3.

L記カウント回路2および出力回路3は論理回路で、第
4図の゛ように、タイマ論理IC4として構成されてい
る・ また、上記可変機′抗器VRは、第5図のように、タイ
マ前面に設けられた時限設定用の操作つまみ5に機械的
に連動しており、この操作つまみ5を目盛板6上に等間
隔に付された時限目盛6a、例えば、10秒タイマの場
合を例にとると、その最大時限値を5等分した2秒、4
秒、6秒、8秒、10秒のいずれかに合わせるように回
転操作することにより、任意に必要な時限を設定して所
定のタイヤ機能を達成することができるように構成され
ている。
The L count circuit 2 and the output circuit 3 are logic circuits, and are configured as a timer logic IC 4 as shown in FIG. It is mechanically linked to an operation knob 5 for setting a time limit provided on the front, and this operation knob 5 is connected to a time scale 6a attached at equal intervals on a scale plate 6, for example, in the case of a 10 second timer. , the maximum time limit is divided into 5 equal parts, 2 seconds and 4
By rotating the tire to match any one of seconds, 6 seconds, 8 seconds, and 10 seconds, a desired time limit can be set and a predetermined tire function can be achieved.

ところで、上記のような従来の電子式アナログタイマに
おいては、出荷の段階で、例えば最大目盛位置などの1
つのポイントについてのみ正確な調整をおこなっている
だけであるから、このタイマの主要な構成要素の1つで
ある可変抵抗器VRの抵抗値の変化特性が第6図の実線
や点線で示すように、可動接触片の回転角度と抵抗値と
の関係において非直線的であること、可変抵抗器VRと
操作つまみ5との機械的な連動に僅少なガタッキを生じ
ること、さらに、目盛6aの精度やタイマIC4の構成
部品にばらつきがあること、などの累積によって、上記
した1つのポイント以外のところでは、操作つまみ5に
よる設定時限値と実際の時限値との間に±5%〜±10
%程度の差異を生じる、いわゆるセット誤差の問題があ
った。
By the way, in the conventional electronic analog timer as described above, at the shipping stage, for example, the maximum scale position, etc.
Since only one point is accurately adjusted, the resistance change characteristics of the variable resistor VR, which is one of the main components of this timer, are as shown by the solid and dotted lines in Figure 6. , the relationship between the rotation angle of the movable contact piece and the resistance value is non-linear, the mechanical interlocking between the variable resistor VR and the operating knob 5 causes slight backlash, and the accuracy of the scale 6a Due to the accumulation of variations in the components of the timer IC 4, etc., there is a difference of ±5% to ±10 between the time limit value set by the operation knob 5 and the actual time limit value at points other than the one point mentioned above.
There was a problem of so-called setting error, which caused a difference of about 10%.

〈発明の目的) この発明は上記の実情に鑑みてなされたもので、上記し
たような誤差要因の存在にかかわらず、必要な時限の設
定精度を高めることができる電子式アナログタイマを提
供することを目的としている。
<Object of the invention> The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide an electronic analog timer that can improve the accuracy of setting the necessary time regardless of the existence of the above-mentioned error factors. It is an object.

(発明の構成と効果〉 この発明に係る電子式アナログタイマは1時限の複数点
における周波数をそれぞれ固定的に設定する周波数設定
器と、CR発振回路の発振周波数の変更による時限設定
時における周波数と上記複数の固定設定周波数とを比較
する周波数比較回路と、この周波数比較回路で比較され
る内周波数が一致したときに作動する報知回路とを具備
したものである。
(Configuration and Effects of the Invention) The electronic analog timer according to the present invention includes a frequency setter that fixedly sets frequencies at multiple points of one time period, and a frequency setter that fixedly sets the frequency at multiple points of one time period, and a frequency setter that fixes the frequency at the time of setting the time period by changing the oscillation frequency of the CR oscillation circuit. The frequency comparison circuit includes a frequency comparison circuit that compares the plurality of fixed set frequencies, and a notification circuit that operates when the frequencies compared by the frequency comparison circuit match.

この発明によれば、操作つまみを介してCR発振回路の
発振周波数を変更する時限設定時において、その変化す
る周波数が時限の複数点における固定設定周波数と比較
されて内周波数が一致する度に報知回路が作動するので
、その報知回路の作動回数を確認することにより、必要
な設定時限値を正確に知ることができる。
According to this invention, when setting a time limit to change the oscillation frequency of the CR oscillation circuit through the operation knob, the changing frequency is compared with fixed set frequencies at multiple points of the time limit, and an alarm is given each time the inner frequencies match. Since the circuit is activated, by checking the number of activations of the notification circuit, it is possible to accurately determine the required set time limit value.

従って、CR発振回路における可変抵抗器の抵抗イ1の
変化特性が非直線的であることや、操作つまみと可変抵
抗器との機械的な連動にガタッキがあること、さらには
、目盛の精度やタイマICなど構成部品にばらつきがあ
ることなどの誤差要因の存在にかかわらず、設定時限値
と実際の時限値との間の差異、つまり、セット誤差を非
常に少なくすることができ、アナログ方式のタイマであ
りながら1時限の設定精度を高めることができる。
Therefore, the variation characteristics of the resistance I1 of the variable resistor in the CR oscillation circuit are non-linear, there is some play in the mechanical interlock between the operation knob and the variable resistor, and there are problems with the accuracy of the scale. Regardless of the existence of error factors such as variations in component parts such as timer ICs, the difference between the set time limit value and the actual time limit value, that is, the set error, can be extremely reduced, and the analog method Even though it is a timer, it is possible to improve the accuracy of setting one time period.

(実施例の説明) 以下、この発明の一実施例を図面にしたがって説明する
(Description of Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

第1図はこの発明に係る電子式アナログタイマの構成を
示すブロック図であり、同図において。
FIG. 1 is a block diagram showing the configuration of an electronic analog timer according to the present invention.

1〜3は第3図で示す従来例と同一の構成要素であるた
め、該当部分に同一の符号を付して、それらの詳しい説
明を省略する。
Since components 1 to 3 are the same as those in the conventional example shown in FIG. 3, the same reference numerals are given to the corresponding parts and detailed explanation thereof will be omitted.

第1図において、7A、7B、7C,7D。In FIG. 1, 7A, 7B, 7C, 7D.

7Eは時限の複数点1例えば、10秒タイマの場合で2
秒、4秒、6秒、8秒、10秒という5等分点における
周波数をそれぞれ固定的に設定する周波数設定器である
。8A、8B、8C,8D。
7E is multiple points of time limit 1 For example, 2 in case of 10 second timer
This is a frequency setter that fixedly sets the frequencies at five equal division points of seconds, 4 seconds, 6 seconds, 8 seconds, and 10 seconds. 8A, 8B, 8C, 8D.

8Eはそれぞれ周波数比較回路で、CR発振回路lにお
ける可変抵抗器VRの抵抗値の可変による時限設定時に
おいて、その抵抗値に反比例して変化する発振周波数と
上記5点の設定周波数とを比較する。
8E is a frequency comparison circuit, which compares the oscillation frequency, which changes in inverse proportion to the resistance value, with the set frequencies at the five points above when setting a time limit by varying the resistance value of the variable resistor VR in the CR oscillation circuit l. .

9はORゲート、10は報知回路の一例であるLED表
示回路で、ORゲート9に上記5つの周波数比較回路8
A、8B、8C,8D、8Eの出力が接続されており、
これら各周波数比較回路8A 、8B 、8C,8D 
、8Eでの比較周波数が一致するたびに閉成されるOR
ゲート9の出力により、LED表示回路10を作動させ
る。
9 is an OR gate, 10 is an LED display circuit which is an example of a notification circuit, and the OR gate 9 is connected to the above five frequency comparison circuits 8.
The outputs of A, 8B, 8C, 8D, and 8E are connected,
Each of these frequency comparison circuits 8A, 8B, 8C, 8D
, an OR that is closed every time the comparison frequencies in 8E match.
The output of the gate 9 activates the LED display circuit 10.

なお、上記各周波数設定器7A、7B、7C。Note that each of the frequency setters 7A, 7B, and 7C mentioned above.

7D、7Eの固定設定周波数は、ある一定幅の比較範囲
を有している0例えば、可変抵抗器VRの抵抗値可変に
よるCR発振回路1の発振周波数の変更範囲を 102
.4 Hz  (10秒)〜1024 Hz(1秒)、
分岡比を 1024とすると、上記5等分点における時
限と周波数との関係は、2秒=81!11.2 Hz 
、 4秒= 814.4 Hz 、 6秒= 409.
8)1z、8秒= 204.8 Hz 、 10秒= 
102.4 Hzとなり、これらを中心周波数として、
許容誤差をそれぞれ±5%とすると、7Aの比較範囲は
778H2〜880 Hz 、 7 B(7)比較範囲
は584 Hz 〜E145 Hz 、 7Cの比較範
囲は389 Hz 〜430Hz、7Dの比較範囲は 
195 Hz 〜215 Hz、7Eの比較範囲は97
 Hz 〜108 Hzとなる。
The fixed set frequencies of 7D and 7E have a comparison range of a certain width.For example, the range of changing the oscillation frequency of the CR oscillation circuit 1 by changing the resistance value of the variable resistor VR is 102
.. 4 Hz (10 seconds) to 1024 Hz (1 second),
If the dividing ratio is 1024, the relationship between the time limit and the frequency at the 5 equal division points is 2 seconds = 81!11.2 Hz
, 4 seconds = 814.4 Hz, 6 seconds = 409.
8) 1z, 8 seconds = 204.8 Hz, 10 seconds =
102.4 Hz, and with these as the center frequency,
Assuming each tolerance is ±5%, the comparison range of 7A is 778H2 to 880 Hz, the comparison range of 7B (7) is 584 Hz to E145 Hz, the comparison range of 7C is 389 Hz to 430Hz, and the comparison range of 7D is
195 Hz to 215 Hz, the comparison range of 7E is 97
Hz to 108 Hz.

また、上記周波数設定器7A、7B、7C。Also, the frequency setters 7A, 7B, and 7C.

7D、7Eと1周波数比較回路8A 、 8B 。7D, 7E and 1 frequency comparison circuit 8A, 8B.

8C,8D 、8Eと、ORゲート9と、LED表示回
路10は第4図で示すように、カウント回路2、出力回
路3とともにタイマ論理IC4として構成されている。
8C, 8D, 8E, the OR gate 9, and the LED display circuit 10, together with the count circuit 2 and the output circuit 3, are configured as a timer logic IC 4, as shown in FIG.

第2図は上記のようなブロック構成の電子式アナログタ
イマの外観正面図であり、上記可変抵抗器VRに機械的
に連動する操作つまみ5がタイマ前面の目盛板6上に付
された時限目盛6aに沿って回転操作自在に装着されて
いるとともに、土足LED表示回路10の作動により点
灯するLED!OAが目盛板6の表面に露出させて取付
けられている。
FIG. 2 is a front view of the external appearance of the electronic analog timer having the block configuration as described above, in which the operation knob 5 mechanically interlocked with the variable resistor VR is connected to the time scale on the scale plate 6 on the front face of the timer. The LED is rotatably mounted along the line 6a and lights up when the shoe-wearing LED display circuit 10 is activated! The OA is attached to the surface of the scale plate 6 so as to be exposed.

つぎに、上記構成の動作について説明する。Next, the operation of the above configuration will be explained.

操作つまみ5を時限目盛6aに沿って回転操作してゆく
と、可変抵抗器VRの抵抗値が小から大に変化するにつ
れてCR発振回路1の発振周波数が順次大から小に変化
する。このように変化するCR発振回路1の発振周波数
が時限の5点において、それぞれ周波数設定器7A、7
B、7C,7D、7Hにより固定的に設定されている上
述の比較範囲の周波数と比較回路8A 、 8B 、 
8C。
When the operating knob 5 is rotated along the time scale 6a, the oscillation frequency of the CR oscillation circuit 1 sequentially changes from high to low as the resistance value of the variable resistor VR changes from small to large. When the oscillation frequency of the CR oscillation circuit 1 changes in this way at five time points, the frequency setters 7A and 7
B, 7C, 7D, 7H, the frequency of the above comparison range fixedly set and the comparison circuits 8A, 8B,
8C.

8D 、8Eにおいて順次比較され、円周波数が一致す
る度にORゲート9を介してLED表示回路10が作動
されて、LED I OAが点灯する。
8D and 8E are sequentially compared, and each time the circular frequencies match, the LED display circuit 10 is activated via the OR gate 9, and the LED I OA lights up.

このLED 10Aの点灯回数を視覚にて確認すること
により、可変抵抗器VRの特性や部品のばらつきなどに
関係なく、必要な時限を誤差のほとんどない状態に高精
度に設定することができる。
By visually checking the number of times the LED 10A is turned on, the required time limit can be set with high precision with almost no error, regardless of the characteristics of the variable resistor VR or variations in components.

なお、上記実施例では、報知回路10として、LED表
示回路を示したが、ブザー作動回路であってもよい。
In the above embodiment, an LED display circuit is shown as the notification circuit 10, but it may be a buzzer activation circuit.

また、周波数設定器による時限の複数設定点は5点に限
らず、2点以上であればよく、特に最大時限の複数等分
の整数の値、例えば5秒タイマの場合で、1秒、2秒、
3秒、4秒、5秒の値に設定することが最も好ましい、
ただし、設定点を多くすればするほど、セット誤差を少
なくすることができる。
In addition, the multiple setting points of the time limit by the frequency setter are not limited to 5 points, but may be 2 or more points, and in particular, the value of an integer that divides the maximum time limit into multiple equal parts, for example, in the case of a 5 second timer, 1 second, 2 points, etc. seconds,
Most preferably, it is set to values of 3 seconds, 4 seconds, and 5 seconds.
However, the more setting points there are, the more the setting error can be reduced.

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

第1図はこの発明に係る電子式アナログタイマの構成を
示すブロック図、第2図は外観正面図、第3図は従来の
電子式アナログタイマの構成を示すブロック図、第4図
はタイマ論理ICの構成図、第5図は従来のタイマの外
観正面図、第6図は可変抵抗器の抵抗値の変化特性図で
ある。 l・・・CR発振回路、2・・・カウント回路、5・・
・操作つまみ、6・・・目盛板、6a・・・時限目盛、
7A。 7B 、7C,7D 、7E・・・周波数設定器、8A
。 8B 、8C,8D 、8E・・・周波数比較回路、9
・・・ORゲート、10・・・LED表示回路、10A
・・・LED、VR・・・可変抵抗器。 第 1 図 第 図 第 図
Fig. 1 is a block diagram showing the configuration of an electronic analog timer according to the present invention, Fig. 2 is an external front view, Fig. 3 is a block diagram showing the configuration of a conventional electronic analog timer, and Fig. 4 is the timer logic. FIG. 5 is an external front view of a conventional timer, and FIG. 6 is a diagram showing a change in resistance value of a variable resistor. l...CR oscillation circuit, 2...count circuit, 5...
・Operation knob, 6...scale plate, 6a...time scale,
7A. 7B, 7C, 7D, 7E...Frequency setter, 8A
. 8B, 8C, 8D, 8E... frequency comparison circuit, 9
...OR gate, 10...LED display circuit, 10A
...LED, VR...variable resistor. Figure 1 Figure 1 Figure 1

Claims (1)

【特許請求の範囲】[Claims] (1)CR発振回路と、その発振回数をカウントして規
定のカウント数になったときタイムアップ信号を出力す
るカウント回路とを備えた電子式アナログタイマにおい
て、時限の複数点における周波数をそれぞれ固定的に設
定する周波数設定器と、上記CR発振回路の発振周波数
の変更による時限設定時における周波数と上記複数の固
定設定周波数とを比較する周波数比較回路と、この周波
数比較回路で比較される両周波数が一致したときに作動
する報知回路とを具備したことを特徴とする電子式アナ
ログタイマ。
(1) In an electronic analog timer equipped with a CR oscillation circuit and a count circuit that counts the number of oscillations and outputs a time-up signal when a specified count is reached, the frequency at multiple time points is fixed. a frequency setter for setting a frequency, a frequency comparison circuit for comparing the frequency at the time of setting a time limit by changing the oscillation frequency of the CR oscillation circuit with the plurality of fixed set frequencies, and both frequencies compared by the frequency comparison circuit. An electronic analog timer characterized in that it is equipped with an alarm circuit that operates when the two match.
JP29578989A 1989-11-14 1989-11-14 Electronic analog timer Expired - Fee Related JP2739741B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29578989A JP2739741B2 (en) 1989-11-14 1989-11-14 Electronic analog timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29578989A JP2739741B2 (en) 1989-11-14 1989-11-14 Electronic analog timer

Publications (2)

Publication Number Publication Date
JPH03155217A true JPH03155217A (en) 1991-07-03
JP2739741B2 JP2739741B2 (en) 1998-04-15

Family

ID=17825184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29578989A Expired - Fee Related JP2739741B2 (en) 1989-11-14 1989-11-14 Electronic analog timer

Country Status (1)

Country Link
JP (1) JP2739741B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100873164B1 (en) * 2007-04-06 2008-12-09 주식회사 한영넉스 Analog timer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100873164B1 (en) * 2007-04-06 2008-12-09 주식회사 한영넉스 Analog timer

Also Published As

Publication number Publication date
JP2739741B2 (en) 1998-04-15

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