KR960008875Y1 - Noise detection circuit - Google Patents
Noise detection circuit Download PDFInfo
- Publication number
- KR960008875Y1 KR960008875Y1 KR2019910000398U KR910000398U KR960008875Y1 KR 960008875 Y1 KR960008875 Y1 KR 960008875Y1 KR 2019910000398 U KR2019910000398 U KR 2019910000398U KR 910000398 U KR910000398 U KR 910000398U KR 960008875 Y1 KR960008875 Y1 KR 960008875Y1
- Authority
- KR
- South Korea
- Prior art keywords
- ground
- detection circuit
- noise
- noise detection
- diode
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/26—Measuring noise figure; Measuring signal-to-noise ratio
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안에 따른 그라운드 노이즈 검출회로도.1 is a ground noise detection circuit diagram according to the present invention.
제2도는 본 고안의 적용예 회로도.2 is a circuit diagram of an application example of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 오피앰프 11,12 : 저항10: op amp 11,12: resistance
13 : 콘덴서 14 : 3종접지13: Capacitor 14: Class 3 Ground
15 : 1종접지 16 : 출력단자15: Class 1 Ground 16: Output Terminal
17 : 다이오드17: diode
본 고안은 그라운드 노이즈 검출회로(Ground Noise Detect Circuit)에 관한 것으로, 특히 저렴한 가격에 의해 그라운드 노이즈를 점검할 수 있도록 한 그라운드 노이즈 검출회로에 관한 것이다.The present invention relates to a ground noise detection circuit, and more particularly, to a ground noise detection circuit capable of checking ground noise at a low price.
일반적으로 거의 모든 공장의 파워(Power)상태는 기존의 한전 설비로는 만족할 수 없고 많은 부분을 공장자체에서 보완하여 상(Phase)전압은 어느 정도 일정하게 유지하였다.In general, the power status of almost all factories cannot be satisfied with the existing KEPCO facilities, and many of them are supplemented by the factories themselves, and the phase voltage is kept constant.
3종접지의 그라운드 노이즈(Ground Noise)는 공장의 많은 장비가 설치된 것중 유도장비들이 있을 것임으로 그라운드 노이즈는 발생될 수 밖에 없으며 다른 장비에 공급되었다.The ground noise of the three types of ground is induction equipment among many equipment installed in the factory, so ground noise can be generated and supplied to other equipment.
종래에는 이와같은 그라운드 노이즈(Ground Noise)를 검출(Detect)하기 위해서 파워모니터(Power Monitor)를 설치하여 프린팅되는 데이타를 보고 점검하였다.Conventionally, in order to detect such ground noise, a power monitor was installed to check and print data.
그러나, 파워모니터는 매우 비싸고 특정한 부위(점검하고자 하는 부위)에만 사용가능하며 해당시간 동안 점검된 데이타로 파워 상태의 양볼을 판단하므로 상시라는 면에서 파워모니터를 설치 운용할 수 없는 단점이 있었다.However, the power monitor is very expensive and can be used only for a specific part (area to be checked), and the power monitor can not be installed and operated at all times because it determines both balls of the power state based on the data checked during the corresponding time.
이에 따라 본 고안은 상기한 문제점을 해결한 것으로, 1종접지를 기저로 3종접지의 그라운드 노이즈를 검출 및 홀딩(Detect Holding)하여 수시로 상태가 어떤지 확인할 수 있도록 안출한 것으로, 이를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Accordingly, the present invention has solved the above problems, and based on the first type ground, the ground noise of the third type ground is detected and held (Detect Holding) to check the status at any time. Detailed description with reference to the following.
제1도는 본 고안에 따른 그라운드 노이즈 검출회로도로서, 이에 도시한 바와같이 3종접지(14)를 오피앰프(10)의 비반전 입력단에 연결함과 동시에 저항(11)을 거쳐 1종접지(15)에 연결하고, 상기 오피앰프(10)의 출력단자를 다이오드(17)를 통해 출력단자(16) 및 그 오피앰프(10)의 반전입력단에 연결함과 아울러 그 접속점을 저항(12) 및 콘덴서(13)를 각기 통해 상기 제1종접지(15)에 연결하여 구성한다.FIG. 1 is a circuit diagram for detecting ground noise according to the present invention. As shown in FIG. 1, the three-type ground 14 is connected to the non-inverting input terminal of the op amp 10 and the first-type ground 15 is connected through the resistor 11. And the output terminal of the op amp 10 to the inverting input terminal of the output terminal 16 and the op amp 10 through the diode 17, and the connection point is connected to the resistor 12 and the capacitor. (13) is configured to connect to the first type ground (15), respectively.
이와같이 구성된 본 고안의 작용효과를 상세히 설명하면 다음과 같다.Referring to the effects of the present invention configured in this way in detail as follows.
3종접지(14)의 노이즈가 발생하면, 그 노이즈는 오피앰프(10) 및 다이오드(17)를 통해 콘덴서(13)에 충전되고, 그 콘덴서(13)에 충전된 노이즈 전압은 다이오드(17)가 역방향이므로 그 다이오드(17)를 통해 방전이 되지 못하고 RC = T(약10시간)의 시정수를 가지므로, 점검자는 1종접지(15)와 출력단자(16) 양단을 디지털 전압계(DVM)로 측정하면 몇 볼트(Volt)의 노이즈가 있었는지 알 수 있다.When the noise of the type 3 ground 14 occurs, the noise is charged to the capacitor 13 through the op amp 10 and the diode 17, and the noise voltage charged to the capacitor 13 is the diode 17. Is a reverse direction, so discharge is not possible through the diode 17 and has a time constant of RC = T (about 10 hours). Therefore, the inspector checks the digital voltmeter (DVM) at both ends of the ground (15) and the output terminal (16). Measurement shows how many volts of noise there were.
그러므로, 제2도에서와 같이 파워시설, 즉 분전반(100)등의 3종접지(14)와 변압기에서 오는 파워라인(101)의 1종접지(15)에 연결하여 그라운드 노이즈를 쉽게 점검할 수 있게 된다.Therefore, as shown in FIG. 2, the ground noise can be easily checked by connecting to a power facility, that is, a three-class ground 14 such as the distribution panel 100 and a first-class ground 15 of the power line 101 coming from the transformer. Will be.
이와같이 본 고안에 따른 그라운드 노이즈 검출회로는 시공시 1종과 3종사이에 분전반 별로 설치하여 두면 점검이 간단하고 설치비용이 거의 들지 않으며, 적용이 간단한 효과를 갖는다.As described above, the ground noise detection circuit according to the present invention has a simple installation and almost no installation cost, and the application is simple when the distribution boards are installed between one and three types at the time of construction.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910000398U KR960008875Y1 (en) | 1991-01-12 | 1991-01-12 | Noise detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019910000398U KR960008875Y1 (en) | 1991-01-12 | 1991-01-12 | Noise detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920015427U KR920015427U (en) | 1992-08-17 |
| KR960008875Y1 true KR960008875Y1 (en) | 1996-10-10 |
Family
ID=19309699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019910000398U KR960008875Y1 (en) | 1991-01-12 | 1991-01-12 | Noise detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR960008875Y1 (en) |
-
1991
- 1991-01-12 KR KR2019910000398U patent/KR960008875Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR920015427U (en) | 1992-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5065104A (en) | Fault sensing with an artificial reference potential provided by an isolated capacitance effect | |
| JP3185145B2 (en) | Fail safe state detection circuit | |
| GB2342455A (en) | Anti-static earth connection test system | |
| US6822431B2 (en) | Intrinsically safe sensor signal processing circuit | |
| US5416470A (en) | Contact judging circuit and contact judging method for impedance measuring apparatus | |
| US4110683A (en) | Apparatus including a plurality of spaced transformers for locating short circuits in cables | |
| US6031700A (en) | Ground detector for a static grounding system | |
| EP0633640B1 (en) | An earth leakage unit | |
| US4267505A (en) | Failure sensor for a gas detector | |
| US4243934A (en) | Composite signal generator | |
| US4567539A (en) | Power interruption and brownout detector | |
| KR960008875Y1 (en) | Noise detection circuit | |
| US5548207A (en) | Missing phase detector | |
| US4031461A (en) | Source related potential indicating continuity tester | |
| US5625305A (en) | Load detection apparatus | |
| US3082300A (en) | Transmission line fault location | |
| US4449058A (en) | Load status monitoring apparatus | |
| KR920005120B1 (en) | Encoder disconnecting detecting circuit | |
| US3484702A (en) | Voltage sensitive and harmonic control circuit | |
| KR890007455Y1 (en) | Network resistor indicator | |
| US3345565A (en) | Continuity field test bridge circuit with diode-controlled visual indicator means | |
| EP0486114A2 (en) | Electrical testing apparatus | |
| KR960008621Y1 (en) | Phase detecting display apparatus for power transmission line | |
| JPH04359126A (en) | Inspecting device for magnetostrictive torque sensor | |
| JPS62502910A (en) | Electrical load monitoring device for vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 20040920 Year of fee payment: 9 |
|
| LAPS | Lapse due to unpaid annual fee |