CN1088686A - Integrated electric leakage warning system - Google Patents
Integrated electric leakage warning system Download PDFInfo
- Publication number
- CN1088686A CN1088686A CN 93108299 CN93108299A CN1088686A CN 1088686 A CN1088686 A CN 1088686A CN 93108299 CN93108299 CN 93108299 CN 93108299 A CN93108299 A CN 93108299A CN 1088686 A CN1088686 A CN 1088686A
- Authority
- CN
- China
- Prior art keywords
- circuit
- electric leakage
- leakage
- electric
- signal
- 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
Links
Images
Abstract
An integrated electric leakage warning system, wherein single electric leakage (or the electricity leaks) testing circuit that is connected to accordingly on the circuitry lines that is placed on each floor of buildings or specific region is contained on the independent circuit board, and adopt synchronous chip microprocessor and CMOS integrated circuit (IC) that each adjustable electric leakage sensitivity switch is connected on the corresponding single electric leakage checking circuit between the two, so just can obtain a simple external circuit device and reduce the whole access time, therefore reduced time delay and avoided wrong operation, wherein surge signal and/or external noise are to handle as a leakage current.
Description
The present invention relates to a kind of integrated leakage is warning system, electric leakage sensitivity can be adjusted to each layer of the buildings that is suitable for wherein being furnished with electric line (or electric wire) or specific zone in this electric leakage warning system, and shows the electric leakage situation of following on display device.
Usually, a kind of electric leakage (or electricity leaks) warning system the measure that takes place as a mishap (as fire) of avoiding resulting from electric leakage (or electricity leaks) is known, this electric leakage warning system is connected respectively to each layer that be arranged in a buildings or specific region, has on the electric line (or electric wire) of 600V rated voltage.
Generally, electric line is connected with a simulated fire apartment warning (for example electric leakage warning device), and this simulated fire apartment warning can detect from the electricity that is arranged in the circuit in the buildings and leak.
In addition, according to so conventional electric leakage apartment warning, one of the individual formation circuit board that singly gives circuit offer all floors of buildings respectively.As a result, the manufacturing of such electric leakage warning device is quite complicated.In addition, usually the potential difference (PD) that relies on the voltage comparator on the circuit board is judged a series of electric leakages, thereby because the error of electric leakage appears judging in the influence of ambient temperature or surge signal probably, and the quantity of the parts of the main circuit of formation electric leakage apartment warning or element increases a lot.Therefore, slowed down in the parts of main circuit or the signal transfer rate between the element, this is because the speed of response of electric leakage apartment warning has been subjected to the undesirable result who slows down.
The electric leakage apartment warning of making is like this worked on the level of sensitivity of adjusting in advance and is produced an alerting signal, but electrical leakage quantity in actual use or the electrical leakage quantity that is lower than the level of sensitivity of adjusting in advance can not directly be measured, and be therefore all very difficult with anti-creeping preventative measurement or maintenance afterwards.
Like this, an object of the present invention is to provide an integrated electric leakage warning system, this integrated electric leakage warning system can be adjusted electric leakage sensitivity being adapted to each floor or the specific region of a buildings, and can show the electrical leakage quantity of electric line (or electric wire).
In order to realize purpose above-mentioned, according to an aspect of the present invention, an integrated electric leakage warning system is provided, wherein single electric leakage (or the electricity is revealed) testing circuit that correspondence is connected on the electric line that is placed on each floor of buildings or specific region is contained on the independent circuit board, and with synchronized chip microprocessor and CMOS integrated circuit (IC) are connected to each adjustable electric leakage sensitivity switch on the corresponding single electric-leakage detection circuit between the two, so just can obtain the whole access time of a simple periphery circuit devices and minimizing system, therefore reduced time delay and avoided wrong operation, wherein surge signal and/or external noise are to handle as a leakage current.
Above-mentioned and other purpose, characteristics and advantage will be very clear by the following description with reference to accompanying drawing.
Fig. 1 is a block scheme according to the entire circuit of integrated electric leakage warning system of the present invention;
Fig. 2 is the circuit diagram of a leakage detector in Fig. 1;
Fig. 3 is one to have drilled according to a switch arrays circuit of electric leakage warning system of the present invention and the input/output device of a microprocessor, and the circuit diagram of several display device and indicator;
Fig. 4 is the circuit diagram of a sensitivity initialization circuit in Fig. 1;
Fig. 5 is the circuit diagram of a circuit working indicator device in Fig. 1.
A preferred embodiment of the present invention will be described below in more detail.
Fig. 1 has schematically demonstrated an entire circuit according to integrated electric leakage warning system of the present invention, and label is that 1 electric-leakage detection circuit effect is that conversion is from being placed in corresponding electric wire (or lead) L
1, L
2... L
9And L
10On zero phase sequence currenttransformer ZCT
1, ZCT
2... ZCT
9And ZCT
10Signal for exchanging (AC) voltage.Label is that 2 path monitoring electric circuit inspection produces any circuit of the alternating voltage of introducing from electric-leakage detection circuit 1 and this alternating voltage is transformed into sequence data, and an effect that is connected to the input amplifier 3 on the circuit detector 2 is to amplify the sequence alternating voltage data that provided by circuit detector 2 with a constant amplification letter number.The effect of an A/D converter 4 is that the sequence alternating voltage of putting into device 3 from input is transformed into digital signal, and the effect of a boundary line circuit detector 5 is to rely on the circuit that detects an electric leakage from the testing result of leakage indicator 1 and circuit detector 2.
Label system synchronization signal of output that is 8 system synchronization controller on from the basis of the synchronizing signal of synchronous generator 7 is so that the entire circuit parts in system are synchronous.In addition, switch arrays circuit 9 comprise a circuit check switch, an automatic gauging (or self check) switch, automatic/hand mode switch, hummer operating switch, reset switch, ZCT conductivity checks switch and or the like, these switches allow to import a desired procedure with the person.The effect of a decodable circuit 10 of switching signal is to determine a desired procedure.This operation is selecting according to the open/close state of the switch in the switch arrays circuit 9.A sensitivities processor circuit 12 has the adjustable slide switch of a plurality of sensitivity, and the effect of this sensitivity treatment circuit 12 is sensitivity current values of setting for each circuit in advance according to from the input decision of a sensitivity initialization circuit 11, this sensitivity initialization circuit 11 is used for setting boundary electric wire (or lead) the sensitivity magnitude of current, and a CPU (central processing unit) 13 is used for controlling all parts and circuit and passes through the various control signal of a signal output apparatus 14 outputs.
According to system of the present invention, A/D converter 4, margin line circuit detector 5, system synchronization controller 8, the decodable circuit 10 of switching signal, device 12 is managed in sensitivity outward and CPU (central processing unit) 3 is integrated on the chip microprocessor A in fact together.
Label is 15 electric leakage circuit display device according to being provided to the number that the signal of concentrating on it shows the circuit that electric leakage has taken place by signal output apparatus 14, and the leakage current value of electrical leakage quantity display device 16 circuits.The circuit working indicator 17 of the parts of an indication formation electric leakage warning system and/or the existing working condition of circuit has the LED element that is used to refer to each line work situation, and a ZCT electric conductivity indicator 18 comprises that a plurality of LED elements are used to refer to zero phase sequence currenttransformer ZCT
1To ZCT
10Working condition.One automatically/continuously (manually) mode warning indicator 19 have a LED element and be used to refer to that the electric leakage situation is automatically indicated or indicate with being connected.In addition, warning part 20 has a hummer producing a warning, and a hummer warning indicator 21 LED is arranged is to forward to close or open with the indication hummer.
Fig. 2 has demonstrated the detailed structure of the leakage detector 1 among middle Fig. 1.At first, be arranged in zero phase sequence currenttransformer ZCT on each circuit from correspondence
1To ZCT
10Current value by electric-leakage detection circuit l
aL
jBe transformed into ac voltage, each electric-leakage detection circuit comprises diode, resistance and electric capacity D1
a, D2
a, R1
a, C
a; D1
j, D2
j, R1
j, C3
jR supplies to the ac voltage that changes the simulation switch I C of circuit detector 2
1, IC
2And IC
3On ,/these switches output AC voltage value in order also produce the address signal A that representative therefrom detects the circuit of alternating voltage respectively
0To A
2Address signal A
0To A
2Be input in the margin line circuit detector 5 of microprocessor A.
OP amplifier OP with input amplifier 3
1Amplify from electric wire detecting device 2 output AC voltage in order with a constant amplification letter number (in this example being 5 times).The amplification letter number of this alternating voltage depends on the current potential of variable resistor VR.With OP amplifier OP
2To by OP amplifier OP
1The alternating voltage that amplifies detects and amplifies and import then in the A/D converter 4 in microprocessor A.
Fig. 3 has demonstrated the input of microprocessor A and switch arrays circuit 5 and the detailed circuit diagram of output unit and display device and indicator.
Microprocessor A receives the clock signal with constant frequency from synchronous generator 7, and this synchronous generator 7 can for example be formed by a crystal oscillator.Microprocessor A has a reset terminal RESET reset key that the switch SW that resets is provided
1The open/close state signal.In addition, little machine A that puts in order receives by the user by the circuit check switch SW
2, the automatic gauging switch SW
3, (manually) mode selector switch SW automatically/continuously
4With hummer ON/OFF selector switch SW
5The input signal of selecting, and to the module I C of drain wire display device 15 element IC
5And the module I C element IC of electrical leakage quantity display device 16
6, IC
7And IC
8Outputting data signals DO-D
3And integrated circuit chip is selected signal CS
0-CS
3, like this so that by display device DISP
1, DISP
2, DISP
3And DISP
4Show the number of electric leakage circuit and from the amount of the leakage current of circuit.
As long as circuit check switch SW
2Repeatedly closed or opened, the number of electric leakage circuit and then be presented at according to priority on display device 15 and 16 from the electrical leakage quantity of this circuit.If several seconds, these data that are shown please be removed automatically not according to a switch.
Also have, in case open the automatic gauging switch SW
3, then work check automatically, so the number and the electrical leakage quantity of all electric leakage circuits are presented on display device 15 and 16 according to priority.
After automatic gauging was finished, the content displayed on display device 15 and 16 was eliminated automatically.When opening automatically/continuous (manually) mode selector switch SW
4The time, the situation of then leaking electricity shows with an automated manner, and if connect down switch SW again
4, then with a manual mode indication electric leakage situation.
As long as press hummer ON/OFF selector switch SW
5Even then electrical leakage quantity is higher than the reference value alerting signal and is also weakened sound.If press switch SW once more
5, then when from circuit, detecting electric leakage, normally produce alerting signal.
Simultaneously, the traffic pilot IC in circuit working indicator 17
9And IC
10Be by address signal A from microprocessor A
0-A
2Select signal C with integrated circuit chip
5Start this traffic pilot IC
9And IC
10Effect be drive selectively corresponding to the electric leakage circuit number LED element LED
1-LED
10Also have, at output PC
5And PC
6, microprocessor A produces the LED element LED that output signal is used for controlling automatic/continuation mode warning indicator 20
11Brighten thus indicate by automatically/continuation mode selector switch SW
4Select automated manner, and be used for controlling a LED element LED simultaneously
12Open and close like this to indicate by hummer on/off switch SW
5The mode of the alerting signal sound reduction of selecting.
Fig. 4 has demonstrated the detailed circuit diagram of sensitivity initialization circuit structure.From elder generation, the slide switch SW of each adjustable sensitivity of sensitivity initialization circuit 11
6-SW
15Reception is used for distributing elm to go into the resistor group R2 of power supply from the simulation value of contact point a.b and c
a, R3
a, R4
a... R2
b, R3
b, R4
b... R2
j, R3
j, R4
jBe connected to contact point a, b and c accordingly.By simulation switch I C
11And IC
12Export the analogue value in order, and then these analogues value are supplied on the setting sensitivities processor 12 of microprocessor A.Thereby, when the slide switch SW of adjustable sensitivity
6-SW
15Be connected respectively to any one of contact point a, b and c selectively, and leakage current be set in one from 0.2A, 0.5A, 1.0A and or the like scope on the current value selected the time, the leakage current value of selecting be digitized and the time go in the CPU (central processing unit) 18 among the microprocessor A, this CPU (central processing unit) 18 the leakage current value of selecting with by the mean value of the time per unit of leakage indicator 1 detected leakage current relatively so that judge the electric leakage situation of circuit.
Fig. 5 is the circuit diagram of circuit working indicator.As shown in Figure 5, circuit working check valve SW
16-SW
25Two contact points are arranged, a contact point t
1By LED element LED
10Receive AC power, and another contact point t
3Directly receive AC power.Also be switch SW respectively
16-SW
25Contact point P is provided
3And P
4Each contact point t
3Be connected respectively to movably contact point P
2And P
1On.Contact point P movably
2And P
1Be connected at zero phase-sequence converter ZCT at two ends
1-ZCT
10And the electric wire C1 between the leakage indicator 2
a, C2
2, C1j, C2
jOn.When movably contact point A and P
2Be connected to contact point t simultaneously
1And t
2So that zero phase current transformer ZCT
1-ZCT
10When being connected to microprocessor A, by zero phase current transformer ZCT
1-ZCT
10Secondary current and the just LED element LED of circuit working indicator 17 of the AC supply voltage that is used to check
1-LED
10Work.
At this moment, working current is supplied to analog switch IC
1And IC
2On.Therefore, can check zero phase-sequence converter ZCT according to working current
1-ZCT
10Conduction situation and corresponding circuit.Can be selectively, when a work check valve SW
16-SW
25Removable contact point P
1And P
2Be connected to contact point t
3And t
4The time, each zero phase sequence currenttransformer ZCT
1-ZCT
10By contact point t
2And P
1Be connected to leakage indicator l
a-l
jIn of correspondence on so that guarantee a normal detection of electrical leakage mode because of face.Here, work check valve SW
16-SW
25Removable contact point P
1And P
2Operate simultaneously.
According to integrated electric leakage warning system of the present invention, zero phase sequence currenttransformer ZCT
1-ZCT
10Be placed on corresponding circuit L
1-L
10On, and the slide switch SW of the sensitivity adjusted by sensitivity initialization circuit 11
6-SW
15, from 0.2A, 0.5AK worker 1.0A, select the sensitivity of leakage current according to the present situation of circuit.Therefore, by an A/D converter 4 analog quantity corresponding to leakage current is converted to digital signal, this leakage current is from zero phase-sequence row current transformer ZCT by leakage indicator 1, circuit detector 2 and input amplifier 3
1-ZCT
10Obtain.Digital signal is input into microprocessor A craftsman CPU
13In, this CPU
13Calculating is according to the mean value by the unit interval of internal timer setting.If mean value greater than the mean value of being set by sensitivity initialization circuit 11, then outputs to electric leakage circuit display device 15 to the number of electric leakage circuit by output circuit 14.Therefore, the number that on display device 15, shows the electric leakage circuit.Simultaneously, so that on magnitude of leakage current display device 16, show, and produce an alerting signal by signal output apparatus 14 output leakage current amounts by warning part 19.
After the electric leakage circuit is fixed fully, if the closed reduction switch SW
1Closure, then system's starting and detection of electrical leakage play a role as described above.
As mentioned above, according to electric leakage warning system of the present invention, when in a constant time cycle from circuit detected mean value with from zero phase sequence currenttransformer ZCT
1-ZCT
10Leakage current than so that when detecting electricity and revealing, because the slide switch SW of the adjustable sensitivity that the reference value of leakage current can be by the sensitivity initialization circuit
6-SW
15Can set with changing, can monitor the existence of the situation of leaking electricity in the line effectively.If the generation leaky can produce alerting signal by the hummer in warning circuit 20.Simultaneously, on electric leakage circuit display device 15, show the number of electric leakage circuit and on electrical leakage quantity display device 16, show magnitude of leakage current.As a result, this system can be used aptly so that avoid or overhaul the unpredictable accident that causes owing to electric leakage.
Although described the present invention, be appreciated that under the prerequisite that does not break away from theme of the present invention and scope and can do many variations and modification according to specific embodiments.
Claims (1)
1, one in response to the electric current that detects from the zero phase sequence currenttransformer that is connected on the electric line, is used for preventing because the integrated electric leakage warning system of the accident of the many expectations that cause of leaking electricity, and this integrated electric leakage warning system comprises:
Sensitivity setting device, these sensitivity setting devices have the slide switch of a plurality of selectively edge joints to the adjustable sensitivity of contact point, these contact points comprise that at least one is used for setting the movably contact point of work reference value, and all contact points are connected on the resistor group of the AC power that is used for distributing input;
CPU (central processing unit) in a microprocessor, this CPU (central processing unit) receives said work reference value from said sensitivity setting device, and the judgement of the electric current that arrives according to said wireline inspection electric leakage situation;
According to the device that shows the electric leakage circuit number from the data-signal of said CPU (central processing unit); With
By data-signal and device that is used for showing magnitude of leakage current that integrated circuit chip selects signal to start from said CPU (central processing unit).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10412/92 | 1992-06-12 | ||
| KR92010412U KR950009807Y1 (en) | 1992-06-12 | 1992-06-12 | Electrical fire alarm of congregation type |
| KR7970/93 | 1993-05-13 | ||
| KR2019930007970U KR960002173Y1 (en) | 1993-05-13 | 1993-05-13 | Fire detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1088686A true CN1088686A (en) | 1994-06-29 |
| CN1040473C CN1040473C (en) | 1998-10-28 |
Family
ID=26629118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93108299A Expired - Fee Related CN1040473C (en) | 1992-06-12 | 1993-06-12 | Integrated electric leakage warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1040473C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562328B (en) * | 2003-11-27 | 2011-01-05 | 富士电机机器制御株式会社 | Residual current circuit breaker |
| CN101102041B (en) * | 2006-07-07 | 2011-06-15 | 上海雷迅防雷技术有限公司 | Surge protector with automatic monitoring function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87209205U (en) * | 1987-06-14 | 1988-03-30 | 王兆璠 | Electric current leakage meter |
-
1993
- 1993-06-12 CN CN93108299A patent/CN1040473C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101562328B (en) * | 2003-11-27 | 2011-01-05 | 富士电机机器制御株式会社 | Residual current circuit breaker |
| CN101102041B (en) * | 2006-07-07 | 2011-06-15 | 上海雷迅防雷技术有限公司 | Surge protector with automatic monitoring function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1040473C (en) | 1998-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6054865A (en) | Multiple function electrical safety compliance analyzer | |
| US6426634B1 (en) | Circuit breaker with integrated self-test enhancements | |
| US9689925B2 (en) | Reliable arc fault circuit interrupter tester utilizing a dynamic fault voltage | |
| JP3546046B2 (en) | Circuit board insulation inspection apparatus and insulation inspection method | |
| US20100301883A1 (en) | Method and Apparatus for Detecting a Fault in a Neutral Return Line of an Electrical Network | |
| CA2309411A1 (en) | Abnormality detecting apparatus for a rotating electric machine | |
| US5155441A (en) | Automatic insulation tester for grounded and ungrounded electrical equipment | |
| WO2018059504A1 (en) | Single-phase voltage self-resetting module detection apparatus | |
| US5172289A (en) | Automatic insulation tester for grounded and ungrounded electrical equipment | |
| US8618811B2 (en) | ARC fault circuit interrupter tester with current responsive pulse timing | |
| CN1088686A (en) | Integrated electric leakage warning system | |
| US4734862A (en) | Conflict monitor | |
| EP0214239B1 (en) | Method and circuit for detecting a fault condition | |
| EP0403547A1 (en) | Method of and apparatus for testing multi-wire cable | |
| JPH07296708A (en) | Wiring breaker | |
| JP2742849B2 (en) | Power monitoring recorder | |
| US3950742A (en) | Adjustable line isolation monitor | |
| JPH10117484A (en) | Ac uninterruptive power circuit normally supplied with commercial power | |
| KR950003597Y1 (en) | Breaker | |
| KR100498557B1 (en) | Circuit for detecting ground | |
| JPH04599A (en) | Device for testing sensor | |
| JP3577912B2 (en) | Electronic circuit inspection equipment | |
| JPH03154879A (en) | Substrate inspecting device | |
| US6968277B2 (en) | Power line monitoring and interrupt method and apparatus | |
| KR20030062951A (en) | An apparatus for a trouble wire display of voltameter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |