JPS63154094A - Detector for locking of motor - Google Patents
Detector for locking of motorInfo
- Publication number
- JPS63154094A JPS63154094A JP61302428A JP30242886A JPS63154094A JP S63154094 A JPS63154094 A JP S63154094A JP 61302428 A JP61302428 A JP 61302428A JP 30242886 A JP30242886 A JP 30242886A JP S63154094 A JPS63154094 A JP S63154094A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- pattern
- resistor
- voltage
- reference 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.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011889 copper foil Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241000282376 Panthera tigris Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Landscapes
- Control Of Electric Motors In General (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、モータがロックしたことを検出し、モータへ
の通電を停止するモータロック検出装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a motor lock detection device that detects that a motor is locked and stops energizing the motor.
従来の技術
従来のモータロック検出装置はカレントトランスまたは
低抵抗の高ワツト抵抗を用いてモータに流れる電流を検
出していた。BACKGROUND OF THE INVENTION Conventional motor lock detection devices use a current transformer or a low resistance, high wattage resistor to detect the current flowing through the motor.
発明が解決しようとする問題点
このような従来のモータロック検出装置では、カレント
トランスまたは低抵抗の高ワツト抵抗を使用しているた
めに、高価な上に、コンパクトにできず、ハンドミキサ
ー、コーヒーメーカなどの小型で安価な商品には使用で
きなかった。Problems to be Solved by the Invention Conventional motor lock detection devices use current transformers or low-resistance high-wattage resistors, making them expensive and unable to be made compact. It could not be used for small and inexpensive products manufactured by manufacturers.
本発明は上記問題点を解決するもので、カレントトラン
スなどの部品が不要となって構造を簡単にできるととも
に、スペースなどが少なくて済み、コスト的にも安価に
できるモータロック検出装置を提供することを目的とす
るものである。The present invention solves the above problems, and provides a motor lock detection device that does not require parts such as a current transformer, which simplifies the structure, requires less space, and can be made at low cost. The purpose is to
問題点を解決するための手段
上記問題点を解決するために本発明は、モータの通電１
ｔＩＩｌｌｔｌを行なうモータ駆動手段と、プリント基
板の銅箔パターンで形成され、モータ駆動手段と直列接
続されたパターン抵抗と、基準電圧を発生する基準電Ｆ
ｆ：発生手段と、パターン抵抗の両端電圧と基準電圧発
生手段が発生した基準電圧を比較する比較手段と、比較
手段の出力が入力され、パターン抵抗の両端電圧が基準
電圧よりも低ければモータ駆動手段に駆動信号を出力し
、高ければモータ駆動手段に停止信号を出力する制御手
段とを有づ′る構成にしたものである。Means for Solving the Problems In order to solve the above problems, the present invention provides a method for energizing the motor.
A motor drive means for performing tIIlltl, a pattern resistor formed of a copper foil pattern on a printed circuit board and connected in series with the motor drive means, and a reference voltage F for generating a reference voltage.
f: A generating means, a comparing means for comparing the voltage across the pattern resistor with the reference voltage generated by the reference voltage generating means, and the output of the comparing means is input, and if the voltage across the pattern resistor is lower than the reference voltage, the motor is driven. The control means outputs a drive signal to the motor drive means, and if the voltage is high, a control means outputs a stop signal to the motor drive means.
作用
上記構成により、プリント基板の銅箔パターンにモータ
電流を流し、その電圧降下が設定１以上になったときに
モータを停止させるので、プリント基板の銅箔パターン
の設計により自由に抵抗値が設定できるうえに、電流検
出のためのカレントトランスなどの部品が不要となって
スペースが少なくて済み、コスト的にも安価にできるな
どの利点が得られる。Effect With the above configuration, the motor current is passed through the copper foil pattern on the printed circuit board, and the motor is stopped when the voltage drop exceeds the setting 1. Therefore, the resistance value can be set freely depending on the design of the copper foil pattern on the printed circuit board. In addition, it has the advantage of not requiring any parts such as a current transformer for current detection, requiring less space, and reducing costs.
実施例
以下、本発明の一実施例を図面にもとづいて説ＡＩ！！
Ｉ Ｇよ木光明の一実施例を示す回路図である。１０は
商用電源、２０はモータ、３０はモータ２０の通電制御
を行なうモータ駆動手段、４０はプリンｔ−Ｕ板の銅箔
パターンで形成されたパターン抵抗で、それぞれ直列後
Ｂ、されて商用電源に接続されている。EXAMPLE Hereinafter, an example of the present invention will be explained based on the drawings. !
FIG. 2 is a circuit diagram showing an embodiment of IG Yoki Mitsuaki. 10 is a commercial power source, 20 is a motor, 30 is a motor drive means for controlling the energization of the motor 20, 40 is a pattern resistor formed from a copper foil pattern on a printed T-U board, and after being connected in series, B is connected to a commercial power source. It is connected to the.
５０は抵抗５１．５２より構成され、基準電圧を発生す
る塁＊電圧発生手段、６０はパターン抵抗４０の両端電
圧と基準電圧発生手段が発生した基準電圧を比較する比
較手段である。７０は抵抗７１．７２．７３、コンデン
サ７４、ＮＡＮＤ回路７５．７６、トランジスタ７７よ
り構成され、比較手段６０の出力が入力され、モータ駆
動手段３０に制御信号を出力する制御手段、８０は抵抗
８１、ダイオード８２、コンデンサ８３、定電圧ダイオ
ード８４より構成された定電圧電源である。Reference numeral 50 is a voltage generating means for generating a reference voltage, which is composed of resistors 51 and 52. Reference numeral 60 is a comparison means for comparing the voltage across the pattern resistor 40 and the reference voltage generated by the reference voltage generating means. 70 is composed of resistors 71, 72, 73, capacitors 74, NAND circuits 75, 76, and transistors 77, and the output of the comparing means 60 is inputted to control means for outputting a control signal to the motor driving means 30; 80 is a resistor 81; , a diode 82, a capacitor 83, and a constant voltage diode 84.
次に動作について説明する。商用電源１０が供給される
と、定電圧電源８０により定電圧化され各部の電源とな
る。なお、ここでは、たとえば正常時のモータ電流のピ
ーク値をＩＡ（アンペア、以上同じ）、ロック時のモー
タ電流のピークを３Ａとする。また、パターン抵抗４０
は正常時のモータ電流においてほとんど発熱しない抵抗
値２０ｍΩとしている。銅の比抵抗ρは１．７ｘ１０−
８Ωであり、パターン幅１闇、長さ４１闇、パターン厚
み３５μＩとすると、抵抗［Ｒ＝ρρ／ａ（β：パター
ン長さ、ａ：パターン而Ｍ ） −Ｌ７ｘ １０−ａ
ｘ ４ｔｘ １０−’ ／ １ｘ １０−３ ｘ ３５
ｘ １０４ ＝ ２０ｍΩとなる。モータロック検出電
流を２Ａに設定すれば、パターン抵抗４０の面積電圧は
２０ｍΩ×２Ａ＝４０ｍＶとなるので、抵抗５１の両端
電圧が４０ｍ Ｖとなるように抵抗５１．５２の抵抗値
を選べば、モータロック検出電流を２八に設定できる。Next, the operation will be explained. When the commercial power source 10 is supplied, the constant voltage power source 80 makes the voltage constant and serves as a power source for each part. Note that here, for example, the peak value of the motor current during normal operation is IA (ampere, the same applies above), and the peak value of the motor current during locking is 3A. Also, pattern resistance 40
is set to a resistance value of 20 mΩ, which hardly generates heat under normal motor current. The specific resistance ρ of copper is 1.7x10-
8 Ω, pattern width is 1, length is 41, and pattern thickness is 35μI, then the resistance [R = ρρ/a (β: pattern length, a: pattern length, M ) -L7x 10-a
x 4tx 10-' / 1x 10-3 x 35
x 104 = 20 mΩ. If the motor lock detection current is set to 2A, the area voltage of the pattern resistor 40 is 20 mΩ x 2 A = 40 mV, so if the resistance value of the resistor 51.52 is selected so that the voltage across the resistor 51 is 40 mV, Motor lock detection current can be set to 28.
なお、モータ２０は回転開始直後のモータ電流はロック
電流と同等となるので、回転開始直後のモータ電流では
モータロック検出動作を行なわないように、抵抗１１と
コンデンサ７４で一定の時間モータロツタ検出動作を止
めている。この結果、モータ２０が正常回転になった時
点では、比較手段６０の非反転入力電圧である基準電圧
の方が反転入力電圧であるパターン抵抗電圧よりも高く
、比較手段６０の出力はハイレベルであるが、コンデン
サ７４への充電は不充分なので、ＮＡＮＤ回路７６の出
力はハイレベルとなり、抵抗７２を介してトランジスタ
７７のベース電極に電流が流れ、トランジスタフ７はオ
ンしており、抵抗７３を介してモータ駆動手段３０のゲ
ート電極に電流が流れ、モータ２０へ通電を行なう。さ
らに時間が経過し、コンデンサ７４への充電が充分とな
っても、モータ２０がロックしていなければ比較手段６
０の出力はハイレベルなので、ＮＡＮＤ回路７６の出力
はハイレベルのままで、モータ２０は回り続ける。とこ
ろが、モータ２０がロックした場合は、パターン抵抗４
ｏにロック時のピーク電流３Ａが流れるので、パターン
抵抗４０の両端電圧は２０ ｍΩＸ３八＝６ｏｒｎＶと
なり、比較手段６０の非反転入力電圧が反転入力電圧よ
りも低くなり、比較手段６０の出力はローレベルとなる
。この結果、ＮＡＮＤ回２８７６の出力はローレベルと
なり、トランジスタ７７、モータ駆動手段３０はオフし
、モータ２０への通電は停止する。Note that the motor current immediately after the motor 20 starts rotating is equivalent to the lock current, so the resistor 11 and capacitor 74 perform the motor rotor detection operation for a certain period of time so that the motor lock detection operation is not performed with the motor current immediately after the rotation starts. It's stopped. As a result, when the motor 20 rotates normally, the reference voltage, which is the non-inverting input voltage of the comparing means 60, is higher than the pattern resistance voltage, which is the inverting input voltage, and the output of the comparing means 60 is at a high level. However, since the capacitor 74 is not sufficiently charged, the output of the NAND circuit 76 becomes high level, and current flows to the base electrode of the transistor 77 via the resistor 72, and the transistor OFF 7 is turned on, and the resistor 73 is turned on. A current flows through the gate electrode of the motor driving means 30 to energize the motor 20. Even if more time passes and the capacitor 74 is sufficiently charged, if the motor 20 is not locked, the comparison means 6
Since the output of 0 is at a high level, the output of the NAND circuit 76 remains at a high level, and the motor 20 continues to rotate. However, if the motor 20 locks, the pattern resistor 4
Since the peak current of 3 A during lock flows through o, the voltage across the pattern resistor 40 becomes 20 mΩ x 38 = 6 ornV, the non-inverting input voltage of the comparing means 60 becomes lower than the inverting input voltage, and the output of the comparing means 60 becomes low. level. As a result, the output of the NAND circuit 2876 becomes low level, the transistor 77 and the motor driving means 30 are turned off, and the power supply to the motor 20 is stopped.
発明の効果
以上のように本発明によれば、モータ電流をプリント基
板の調筋パターンに流し、８石パターンの電圧降下を検
出してモータロックを検出しているため、カレントトラ
ンスなどの部品が不要なうえに、スペースが少なくて済
み、安価であるなど実用性が非常に高い。Effects of the Invention As described above, according to the present invention, motor current is passed through the reinforcing pattern on the printed circuit board, and motor lock is detected by detecting the voltage drop in the 8-stone pattern. Not only is it unnecessary, it takes up little space and is inexpensive, making it very practical.
装置の回路図である。FIG. 3 is a circuit diagram of the device.
１０・・・商用電源、２０・・・モータ、３０・・・モ
ータ駆動手段、４０・・・パターン抵抗、５０・・・基
準電圧発生手段、６０・・・比較手段、７０・・・制御
手段、８０・・・定電圧電源。DESCRIPTION OF SYMBOLS 10... Commercial power supply, 20... Motor, 30... Motor drive means, 40... Pattern resistance, 50... Reference voltage generation means, 60... Comparison means, 70... Control means , 80...constant voltage power supply.
代理人 森 本 義 弘第１図 、７′− ｌσ−・南市ｔぶ ２σ −モーダ ８σ−モづ駆動５歿 ４θ −・−ハ０ｆ−ン瓜岨１ 昨・・−基５！ｔＬ釦目皮 ＩＯ−・比較Ｂ先 ７σ−剥＊！１史 〃−楚劃１虎Agent Mori Hon Yoshihiro Figure 1 ,7'- lσ-・Minamiichi tbu 2σ - moda 8σ-Mozu drive 5 times 4θ -・-ha0f-n 圜岨1 Yesterday... - Base 5! tL button eye skin IO-・Comparison B destination 7σ-peeling*! 1 history 〃-Chuken 1 Tiger
Claims (1)
リント基板の銅箔パターンで形成され、前記モータ駆動
手段と直列接続されたパターン抵抗と、基準電圧を発生
する基準電圧発生手段と、前記パターン抵抗の両端電圧
と前記基準電圧発生手段が発生した基準電圧を比較する
比較手段と、前記比較手段の出力が入力され、前記パタ
ーン抵抗の両端電圧が基準電圧よりも低ければ前記モー
タ駆動手段に駆動信号を出力し、高ければ前記モータ駆
動手段に停止信号を出力する制御手段とを有するモータ
ロック検出装置。1. A motor drive means for controlling the energization of the motor, a pattern resistor formed of a copper foil pattern on a printed circuit board and connected in series with the motor drive means, a reference voltage generating means for generating a reference voltage, and both ends of the pattern resistor. a comparison means for comparing the voltage with a reference voltage generated by the reference voltage generation means; the output of the comparison means is input; and if the voltage across the pattern resistor is lower than the reference voltage, a drive signal is output to the motor drive means; and control means for outputting a stop signal to the motor drive means if the motor lock detection device is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61302428A JPS63154094A (en) | 1986-12-17 | 1986-12-17 | Detector for locking of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61302428A JPS63154094A (en) | 1986-12-17 | 1986-12-17 | Detector for locking of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63154094A true JPS63154094A (en) | 1988-06-27 |
Family
ID=17908803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61302428A Pending JPS63154094A (en) | 1986-12-17 | 1986-12-17 | Detector for locking of motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63154094A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123794A (en) * | 1980-02-29 | 1981-09-29 | Nippon Denso Co Ltd | Load driving unit for vehicle |
| JPS58141508A (en) * | 1982-02-17 | 1983-08-22 | 松下電器産業株式会社 | Method of producing solid resistor |
-
1986
- 1986-12-17 JP JP61302428A patent/JPS63154094A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56123794A (en) * | 1980-02-29 | 1981-09-29 | Nippon Denso Co Ltd | Load driving unit for vehicle |
| JPS58141508A (en) * | 1982-02-17 | 1983-08-22 | 松下電器産業株式会社 | Method of producing solid resistor |
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