JP2001174495A - Noise detecting circuit, and power source tap - Google Patents
Noise detecting circuit, and power source tapInfo
- Publication number
- JP2001174495A JP2001174495A JP35570299A JP35570299A JP2001174495A JP 2001174495 A JP2001174495 A JP 2001174495A JP 35570299 A JP35570299 A JP 35570299A JP 35570299 A JP35570299 A JP 35570299A JP 2001174495 A JP2001174495 A JP 2001174495A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- frequency
- noise
- power source
- high frequency
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はノイズ検知回路およ
び電源タップに関し、さらに詳しく言えば、商用交流電
源に含まれている高周波ノイズ成分を簡易な手段にて検
出してその存在を表示する特に電源タップに好適なノイ
ズ検知回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a noise detection circuit and a power tap, and more particularly, to a power supply for detecting a high-frequency noise component contained in a commercial AC power supply by a simple means and displaying its presence. The present invention relates to a noise detection circuit suitable for a tap.
【０００２】[0002]
【従来の技術】商用電源は本来きれいなサイン波形であ
るが、例えばインバータを搭載した空気調和機や冷蔵・
冷凍装置、自動販売機などが接続される電源ラインに
は、インバータに起因する高周波ノイズが重畳すること
が知られている。2. Description of the Related Art Commercial power supplies have inherently clean sine waveforms. For example, air conditioners equipped with inverters and refrigeration
It is known that high frequency noise caused by an inverter is superimposed on a power supply line to which a refrigeration apparatus, a vending machine, and the like are connected.
【０００３】したがって、このような電源ラインに例え
ばパソコンを接続して使用すると、電源ラインより到来
する高周波ノイズによって例えばディスプレイの映像に
乱れが生じたり、場合によってはコンピュータのデータ
が破壊されることがある。Therefore, when a personal computer is connected to such a power supply line and used, for example, high-frequency noise arriving from the power supply line may cause, for example, an image on a display to be disturbed or data in the computer to be destroyed in some cases. is there.
【０００４】[0004]
【発明が解決しようとする課題】そこで、高周波ノイズ
の測定が必要となるが、従来ではノイズ測定用の測定器
やオシロスコープなどにより測定するしか手立てがな
く、しかもこのような測定機器は高価であるばかりでな
く、その取り扱いに多少なりとも専門知識が要求される
ため、一般家庭では簡単に高周波ノイズを測定すること
ができないのが現状であった。Therefore, it is necessary to measure high-frequency noise. However, conventionally, there is no other way but to measure with a measuring instrument for measuring noise or an oscilloscope, and such measuring equipment is expensive. Not only that, but at the same time, it is difficult for ordinary households to easily measure high-frequency noise because the handling thereof requires some expertise.
【０００５】[0005]
【課題を解決するための手段】本発明は、このような課
題を解決するためになされたもので、その第１の目的
は、商用交流電源に含まれている高周波ノイズを簡易的
に検出してその存在を表示できるようにしたノイズ検知
回路を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a first object of the present invention is to simply detect high-frequency noise contained in a commercial AC power supply. It is another object of the present invention to provide a noise detection circuit capable of displaying its presence.
【０００６】また、本発明の第２の目的は、商用交流電
源に含まれている高周波ノイズを簡易的に検出してその
存在を表示できるノイズ検知回路を備えた電源タップを
提供することにある。A second object of the present invention is to provide a power tap provided with a noise detecting circuit capable of easily detecting high-frequency noise contained in a commercial AC power supply and displaying its presence. .
【０００７】上記第１の目的を達成するため、本発明の
ノイズ検知回路は、商用交流電源に含まれている所定周
波数の高周波ノイズ成分を抽出するコンデンサを含む高
周波抽出回路と、同高周波抽出回路にて抽出された高周
波ノイズ成分を整流する整流回路と、同整流回路の出力
により駆動される発光ダイオードとを備えていることを
特徴としている。To achieve the first object, a noise detection circuit according to the present invention comprises a high-frequency extraction circuit including a capacitor for extracting a high-frequency noise component of a predetermined frequency included in a commercial AC power supply; And a light-emitting diode driven by the output of the rectifier circuit.
【０００８】また、上記第２の目的を達成するため、本
発明は、商用交流電源に接続される一対の母線を有し、
同母線間にコンセント口が接続されている電源タップに
おいて、上記母線間に接続されたコンデンサを含み、上
記商用交流電源に含まれている所定周波数の高周波ノイ
ズ成分を抽出する高周波抽出回路と、同高周波抽出回路
にて抽出された高周波ノイズ成分を整流する整流回路
と、同整流回路の出力により駆動される発光ダイオード
とからなるノイズ検知回路を備えていることを特徴とし
ている。In order to achieve the second object, the present invention has a pair of buses connected to a commercial AC power supply,
A power tap having an outlet connected between the buses, a high-frequency extraction circuit including a capacitor connected between the buses and extracting a high-frequency noise component of a predetermined frequency included in the commercial AC power supply; It is characterized by including a noise detection circuit including a rectifier circuit for rectifying a high-frequency noise component extracted by the high-frequency extraction circuit and a light-emitting diode driven by an output of the rectifier circuit.
【０００９】本発明によれば、ノイズ測定器やオシロス
コープなどの高価で取り扱いにくい測定機器を用いるこ
となく、発光ダイオードの表示により、高周波ノイズの
有無を判断することができる。したがって、このノイズ
検知回路を備えた電源タップによれば、一般家庭でも高
周波ノイズの有無を容易に知ることができる。According to the present invention, the presence or absence of high-frequency noise can be determined by the display of the light emitting diode without using an expensive and difficult-to-handle measuring instrument such as a noise measuring instrument or an oscilloscope. Therefore, according to the power tap provided with the noise detection circuit, the presence or absence of high-frequency noise can be easily known even in ordinary households.
【００１０】[0010]
【発明の実施の形態】次に、本発明を図１に示されてい
る実施例により説明する。なお、この実施例は電源タッ
プについてのものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to an embodiment shown in FIG. This embodiment is for a power tap.
【００１１】この電源タップ１は、図示しない商用交流
電源に公知のコンセントプラグを介して接続される一対
の母線１ａ，１ｂを備え、この母線１ａ，１ｂ間にはコ
ンセント口２のほかに、ノイズ検知回路３が接続されて
いる。コンセント口２の数は任意であってよい。The power tap 1 has a pair of buses 1a and 1b connected to a commercial AC power supply (not shown) through a well-known outlet plug. Between the buses 1a and 1b, in addition to the outlet port 2, noise is generated. The detection circuit 3 is connected. The number of outlets 2 may be arbitrary.
【００１２】ノイズ検知回路３は、高周波抽出部３１、
整流部３２および表示部３３とを備えている。この実施
例において、高周波抽出部３１は母線１ａ，１ｂ間に接
続されたコンデンサ３１１と抵抗３１２の直列回路を有
している。この高周波抽出部３１はフィルタの一種であ
り、そのＣＲ時定数により信号通過帯域が選択される。
この実施例では通過帯域が１ＭＨｚ近辺とされている。The noise detection circuit 3 includes a high-frequency extraction unit 31,
A rectifying unit 32 and a display unit 33 are provided. In this embodiment, the high frequency extracting unit 31 has a series circuit of a capacitor 311 and a resistor 312 connected between the buses 1a and 1b. The high-frequency extraction unit 31 is a type of filter, and a signal pass band is selected based on its CR time constant.
In this embodiment, the pass band is around 1 MHz.
【００１３】整流部３２は、一方の母線１ｂ側から見て
互いに順方向に直列接続された２つのダイオード３２
１，３２２を有し、ダイオード３２１のカソードとダイ
オード３２２のアノードとの接続点が直流阻止用コンデ
ンサ３１３を介して高周波抽出部３１に接続されてい
る。なお、出力側のダイオード３２２と母線１ｂとの間
に平滑用コンデンサをいれて整流平滑回路としてもよ
い。また、母線１ｂはホット側、コールド側のいずれで
あってもよい。The rectifying section 32 includes two diodes 32 connected in series in the forward direction with respect to one bus 1b.
1 and 322, and a connection point between the cathode of the diode 321 and the anode of the diode 322 is connected to the high-frequency extraction unit 31 via the DC blocking capacitor 313. Note that a rectifying / smoothing circuit may be provided by inserting a smoothing capacitor between the diode 322 on the output side and the bus 1b. The bus 1b may be on either the hot side or the cold side.
【００１４】この整流部３２で、高周波抽出部３１にて
抽出された高周波ノイズが整流される。そして、その整
流出力により表示部３３が駆動されるのであるが、この
実施例において、表示部３３には発光ダイオード３３１
が用いられている。The rectifier 32 rectifies the high frequency noise extracted by the high frequency extractor 31. Then, the display unit 33 is driven by the rectified output. In this embodiment, the display unit 33 includes the light emitting diode 331.
Is used.
【００１５】したがって、この電源タップ１によれば、
商用交流電源に例えばインバータに起因する高周波ノイ
ズが重畳されている場合、その高周波ノイズが高周波抽
出部３１で抽出される。そして、整流部３２にて高周波
ノイズが整流され、その整流出力により発光ダイオード
３３１が点灯駆動される。したがって、発光ダイオード
３３１の点灯により、高周波ノイズが到来していること
を容易に知ることができる。Therefore, according to the power tap 1,
When high frequency noise due to, for example, an inverter is superimposed on the commercial AC power supply, the high frequency noise is extracted by the high frequency extraction unit 31. Then, the high-frequency noise is rectified by the rectification unit 32, and the rectified output drives the light emitting diode 331 to light up. Therefore, the lighting of the light emitting diode 331 makes it easy to know that high frequency noise has arrived.
【００１６】上記実施例は、一般家庭でも容易に使える
最適例としての電源タップについてのものであるが、本
発明はこれに限定されるものではない。すなわち、上記
ノイズ検知回路は他の機器に組み込まれることなく単体
として用いられることはもとより、電源タップ以外の機
器に組み込まれてもよい。Although the above embodiment is directed to a power strip as an optimum example that can be easily used in ordinary households, the present invention is not limited to this. That is, the noise detection circuit may be used as a single unit without being incorporated in another device, or may be incorporated in other devices than the power tap.
【００１７】[0017]
【発明の効果】以上説明したように、請求項１のノイズ
検知回路によれば、ノイズ測定器やオシロスコープなど
の高価で取り扱いにくい測定機器を用いることなく、発
光ダイオードの表示により、高周波ノイズの有無を判断
することができる。As described above, according to the noise detecting circuit of the first aspect, the presence or absence of high-frequency noise can be obtained by displaying the light emitting diode without using expensive and difficult-to-handle measuring instruments such as a noise measuring instrument and an oscilloscope. Can be determined.
【００１８】また、請求項２の電源タップによれば、こ
の電源タップから例えばパソコンやオーディオ機器など
の電源を得ることにより、一般家庭でも高周波ノイズの
有無を容易に知ることができる。Further, according to the power tap of the present invention, it is possible to easily know the presence or absence of high-frequency noise even in ordinary households by obtaining a power source of, for example, a personal computer or an audio device from the power tap.
【図１】本発明の一実施例を示した回路構成図。FIG. 1 is a circuit diagram showing an embodiment of the present invention.
１ 電源タップ １ａ，１ｂ 母線 ２ コンセント口 ３ ノイズ検知回路 ３１ 高周波抽出部 ３１１ コンデンサ ３１２ 抵抗 ３１３ 直流阻止用コンデンサ ３２ 整流部 ３２１ ダイオード ３３ 表示部 ３３１ 発光ダイオード DESCRIPTION OF SYMBOLS 1 Power tap 1a, 1b Busbar 2 Outlet port 3 Noise detection circuit 31 High frequency extraction part 311 Capacitor 312 Resistance 313 DC blocking capacitor 32 Rectification part 321 Diode 33 Display part 331 Light emitting diode
Claims (2)
の高周波ノイズ成分を抽出するコンデンサを含む高周波
抽出回路と、同高周波抽出回路にて抽出された高周波ノ
イズ成分を整流する整流回路と、同整流回路の出力によ
り駆動される発光ダイオードとを備えていることを特徴
とするノイズ検知回路。A high-frequency extraction circuit including a capacitor for extracting a high-frequency noise component of a predetermined frequency included in a commercial AC power supply; a rectification circuit for rectifying the high-frequency noise component extracted by the high-frequency extraction circuit; A noise detection circuit comprising: a light emitting diode driven by an output of a rectifier circuit.
有し、同母線間にコンセント口が接続されている電源タ
ップにおいて、 上記母線間に接続されたコンデンサを含み、上記商用交
流電源に含まれている所定周波数の高周波ノイズ成分を
抽出する高周波抽出回路と、同高周波抽出回路にて抽出
された高周波ノイズ成分を整流する整流回路と、同整流
回路の出力により駆動される発光ダイオードとからなる
ノイズ検知回路を備えていることを特徴とする電源タッ
プ。2. A power tap having a pair of buses connected to a commercial AC power supply, and an outlet connected between the buses, including a capacitor connected between the buses. A high-frequency extraction circuit that extracts a high-frequency noise component of a predetermined frequency included therein, a rectification circuit that rectifies the high-frequency noise component extracted by the high-frequency extraction circuit, and a light-emitting diode driven by an output of the rectification circuit. A power tap characterized by comprising a noise detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35570299A JP2001174495A (en) | 1999-12-15 | 1999-12-15 | Noise detecting circuit, and power source tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35570299A JP2001174495A (en) | 1999-12-15 | 1999-12-15 | Noise detecting circuit, and power source tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001174495A true JP2001174495A (en) | 2001-06-29 |
Family
ID=18445336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35570299A Pending JP2001174495A (en) | 1999-12-15 | 1999-12-15 | Noise detecting circuit, and power source tap |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001174495A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101095875B1 (en) | 2009-06-01 | 2011-12-21 | 김이혜숙 | noise level detecting device for power line |
| JP2016096371A (en) * | 2014-11-12 | 2016-05-26 | アズビル株式会社 | Noise detection circuit |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125078U (en) * | 1983-02-12 | 1984-08-23 | 清水 信男 | Noise removal centralized outlet box |
| JPS63169572A (en) * | 1987-01-07 | 1988-07-13 | Fujitsu Ltd | Noise frequency detector |
| JPS63262030A (en) * | 1987-04-20 | 1988-10-28 | 株式会社八幡電機製作所 | Electric source supply status detector |
| JPH01258536A (en) * | 1988-04-08 | 1989-10-16 | Nippon Telegr & Teleph Corp <Ntt> | High frequency audible noise detector |
| JPH0490532A (en) * | 1990-08-02 | 1992-03-24 | Olympus Optical Co Ltd | Remote control device for camera |
| JPH0443871U (en) * | 1990-08-14 | 1992-04-14 | ||
| JPH10164836A (en) * | 1996-11-25 | 1998-06-19 | Dx Antenna Co Ltd | Device for warning of anomaly in power supply |
| JPH10303674A (en) * | 1997-04-25 | 1998-11-13 | Sony Corp | Ac line filter |
| JPH1164258A (en) * | 1997-04-25 | 1999-03-05 | Shimadzu Corp | Thermal analysis device |
| JPH11205166A (en) * | 1998-01-19 | 1999-07-30 | Mitsubishi Electric Corp | Noise detector |
| JPH11252646A (en) * | 1998-03-02 | 1999-09-17 | Bandai Co Ltd | Incoming call notice device for mobile communication set |
-
1999
- 1999-12-15 JP JP35570299A patent/JP2001174495A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59125078U (en) * | 1983-02-12 | 1984-08-23 | 清水 信男 | Noise removal centralized outlet box |
| JPS63169572A (en) * | 1987-01-07 | 1988-07-13 | Fujitsu Ltd | Noise frequency detector |
| JPS63262030A (en) * | 1987-04-20 | 1988-10-28 | 株式会社八幡電機製作所 | Electric source supply status detector |
| JPH01258536A (en) * | 1988-04-08 | 1989-10-16 | Nippon Telegr & Teleph Corp <Ntt> | High frequency audible noise detector |
| JPH0490532A (en) * | 1990-08-02 | 1992-03-24 | Olympus Optical Co Ltd | Remote control device for camera |
| JPH0443871U (en) * | 1990-08-14 | 1992-04-14 | ||
| JPH10164836A (en) * | 1996-11-25 | 1998-06-19 | Dx Antenna Co Ltd | Device for warning of anomaly in power supply |
| JPH10303674A (en) * | 1997-04-25 | 1998-11-13 | Sony Corp | Ac line filter |
| JPH1164258A (en) * | 1997-04-25 | 1999-03-05 | Shimadzu Corp | Thermal analysis device |
| JPH11205166A (en) * | 1998-01-19 | 1999-07-30 | Mitsubishi Electric Corp | Noise detector |
| JPH11252646A (en) * | 1998-03-02 | 1999-09-17 | Bandai Co Ltd | Incoming call notice device for mobile communication set |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101095875B1 (en) | 2009-06-01 | 2011-12-21 | 김이혜숙 | noise level detecting device for power line |
| JP2016096371A (en) * | 2014-11-12 | 2016-05-26 | アズビル株式会社 | Noise detection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2775266B1 (en) | Electrical event detection device and method of detecting and classifying electrical power usage | |
| US8924604B2 (en) | Systems and methods for data compression and feature extraction for the purpose of disaggregating loads on an electrical network | |
| US9618553B2 (en) | Systems and methods for sensing environmental changes using light sources as sensors | |
| AU2011248626A1 (en) | Electrical event detection device and method of detecting and classifying electrical power usage | |
| KR101558022B1 (en) | Apparatus for detecting input phase missing and method thereof | |
| US9961417B2 (en) | Device and method for acquiring electricity utilization information | |
| JP2001174495A (en) | Noise detecting circuit, and power source tap | |
| JPH09233679A (en) | Corona discharge detector in power installation | |
| KR20170125745A (en) | Power blackout sensing system with a phantom voltage detector | |
| US20040100462A1 (en) | System having a screen and an external power supply unit | |
| JP5026780B2 (en) | Voltage detection circuit and discharge lamp driving system using the voltage detection circuit | |
| JP3190312B2 (en) | Uninterruptible power supply circuit judgment device and judgment method | |
| CN220207724U (en) | Voltage detection circuit | |
| CN211627680U (en) | Standby power detection circuit and standby power detection device | |
| KR100321242B1 (en) | apparatus for sensing zero-crossing in a power line system | |
| JP3207371B2 (en) | Partial discharge measurement method | |
| KR0133162Y1 (en) | Automatic grounding circuit of self test terminal in the monitor | |
| JPH03273174A (en) | Monitoring devices for local electric discharge on stationary apparatus | |
| CN106291395A (en) | The loss phase undervoltage detection circuit of three-phase input power | |
| CN109388909A (en) | A kind of method and system of drawing principle figure | |
| US20220107343A1 (en) | Circuit energization status test device and method | |
| JPH08114637A (en) | Three-phase ac power supply open-phase detection apparatus | |
| WO2003032449A1 (en) | Apparatus for detecting load using electromagnetic induction | |
| JP2000175444A (en) | Input interrupt signal sending circuit | |
| KR20010056051A (en) | apparatus for control speed of communication in a power line system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061116 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080924 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20081001 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20081201 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090610 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20091015 |