CN107589338A - Grounded inspection circuit and its detection method in continuous on line monitor table - Google Patents
Grounded inspection circuit and its detection method in continuous on line monitor table Download PDFInfo
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- CN107589338A CN107589338A CN201710945642.2A CN201710945642A CN107589338A CN 107589338 A CN107589338 A CN 107589338A CN 201710945642 A CN201710945642 A CN 201710945642A CN 107589338 A CN107589338 A CN 107589338A
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- 238000007689 inspection Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 title claims description 7
- 101150090280 MOS1 gene Proteins 0.000 claims description 13
- 101100401568 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MIC10 gene Proteins 0.000 claims description 13
- 102100030393 G-patch domain and KOW motifs-containing protein Human genes 0.000 claims description 10
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 10
- 101100461812 Arabidopsis thaliana NUP96 gene Proteins 0.000 claims description 7
- 101001009694 Homo sapiens G-patch domain and KOW motifs-containing protein Proteins 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
The invention discloses the grounded inspection circuit in a kind of continuous on line monitor table, including voltage detecting circuit between live wire and ground wire, voltage detecting circuit between live wire and zero line, voltage detecting circuit and Control output circuit between zero line and ground wire, voltage detecting circuit between the live wire and ground wire, voltage detecting circuit between live wire and zero line, it is connected after voltage detecting circuit is parallel with one another between zero line and ground wire with Control output circuit, the Control output circuit includes single-chip microcomputer or decoder, relay switching variable output circuit and the buzzer alarm circuit being connected on single-chip microcomputer or decoder output, voltage detecting circuit between the live wire and ground wire, voltage detecting circuit between live wire and zero line, it is connected after voltage detecting circuit is parallel with one another between zero line and ground wire with the input of single-chip microcomputer or decoder.The present invention can be very good to detect field instrument whether normal ground so that Meter recognition imperfect earth, find out the reason for precision instrument measured value is inaccurate.
Description
Technical field
The present invention relates to a kind of a kind of grounded inspection circuit detected in circuit, more particularly to continuous on line monitor table and
Its detection method.
Background technology
On-line monitoring instrument has the high requirement of comparison, such as instrumentation grounding etc. to 220V power supplies, and our meter locales
Operating mode situation is often worse, and usually ground connection is wrong or forgets to be grounded, and if without being reliably grounded, it frequently can lead to
The problems such as instrument measurement is inaccurate, and Meter Test data fluctuations are big.
The content of the invention
The present invention is in order to solve defect present in above-mentioned prior art and deficiency, there is provided one kind can be very good to detect
Field instrument whether normal ground so that Meter recognition imperfect earth, find out the continuous of the reason for precision instrument measured value is inaccurate
Grounded inspection circuit and its detection method in on-line monitoring instrument.
Technical scheme：A kind of grounded inspection circuit in continuous on line monitor table, including live wire and ground wire
Between voltage detecting circuit and relay control between voltage detecting circuit, zero line and ground wire between voltage detecting circuit, live wire and zero line
Output circuit processed, between the live wire and ground wire between voltage detecting circuit, live wire and zero line between voltage detecting circuit, zero line and ground wire
It is connected after voltage detecting circuit is parallel with one another with Control output circuit, the Control output circuit includes monolithic
Machine or decoder, the relay switching variable output circuit being connected on single-chip microcomputer or decoder output and buzzer warning electricity
Road, voltage detecting between voltage detecting circuit, zero line and ground wire between voltage detecting circuit, live wire and zero line between the live wire and ground wire
It is connected after circuit is parallel with one another with the input of single-chip microcomputer or decoder.
Preferably, voltage detecting circuit includes the optocoupler U being connected in turn on L, PE between the live wire and ground wire2, three poles
Pipe Q4, metal-oxide-semiconductor 2.
Preferably, voltage detecting circuit includes the optocoupler U being connected in turn on L, N between the live wire and zero line1, triode
Q3, metal-oxide-semiconductor 1.
Preferably, voltage detecting circuit includes the optocoupler U being connected in turn on N, PE between the live wire and ground wire3, three poles
Pipe Q5, metal-oxide-semiconductor 3.
Preferably, the outputting circuit for relay include decoder either single-chip microcomputer, be connected to decoder or single-chip microcomputer
On triode Q1, triode Q2, buzzer, triode Q6, relay U401, the triode Q2 and triode Q6 are in parallel even
Triode Q1 output end is connected on, the buzzer is connected to triode Q2 output end, and the relay U401 is connected to three
Pole pipe Q6 output end.
Preferably, decoder used is 3-8 decoder when using decoder.
A kind of detection method of grounded inspection circuit in continuous on line monitor table, comprises the steps：
1）When L, PE wiring are normal, there is electric current from optocoupler U2Flow through in left side so that optocoupler U2Driving, 5 pin output 5V, three poles
Pipe Q4 1 pin is 5V high level, triode ON, MOS2 output low levels；
2）When L, N wiring are normal, there is electric current from optocoupler U1Flow through in left side so that optocoupler U1Driving, 5 pin output 5V, three poles
Pipe Q3 1 pin is 5V high level, triode ON, MOS1 output low levels；
3）When N, PE wiring are normal, without electric current from optocoupler U3Flow through in left side so that optocoupler U3Do not drive, 5 pin output 0V,
Triode Q3 1 pin is 0V low levels, and triode is not turned on, MOS1 output high level；
4）Set only as MOS2, MOS1, MOS3, when output is respectively low level, low level, high level, just represent 220V
Wiring is all correct；
5）By decoder or single-chip microcomputer, above-mentioned MOS1, MOS2, MOS3 signal is changed into Q4 signal outputs, works as ground connection
When normal, Q4 signals are high level output, and triode Q1 is turned on, and Q4 OUT output low levels, triode Q2 is not turned on, buzzer
It is failure to actuate, while triode Q6 is not turned on, no current on the left of relay U401, relay is failure to actuate；When being grounded abnormal, Q4
Signal is low level output, and triode Q1 is not turned on, Q4 OUT output high level, triode Q2 conductings, buzzer action alarm,
Triode Q6 conductings simultaneously, relay U401 left sides produce electric current, the actuating of relay, and the sub- P3 of 4 core print seats connects output；
6）So far, it is possible to achieve the output switch parameter control of the not good problem with grounding of wiring and the output of alarm sound occur.
The present invention can be very good detect field instrument whether normal ground so that Meter recognition imperfect earth, find out essence
The reason for close instrument measurement value is forbidden；And can realize and externally export active, passive switching value, realize externally output alarm
Sound so that it observes more intuitive and convenient.
Brief description of the drawings
Fig. 1 is the module connection figure of the present invention；
Fig. 2 is the schematic diagram of the voltage detecting circuit between live wire and ground wire in the present invention；
Fig. 3 is the schematic diagram of the voltage detecting circuit between live wire and zero line in the present invention；
Fig. 4 is the schematic diagram of the voltage detecting circuit between zero line and ground wire in the present invention；
Fig. 5 is the schematic diagram of repeat circuit output control circuit of the present invention.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings, but is not the limit to the scope of the present invention
System.
As shown in figure 1, when L, PE wiring are normal, there is electric current to be flowed through on the left of optocoupler U2 so that optocoupler U2 drives, and 5
Pin exports 5V, and triode Q4 1 pin be 5V high level, triode ON, and MOS2 exports low level.
As shown in Fig. 2 when L, N wiring are normal, there is electric current to be flowed through on the left of optocoupler U1 so that optocoupler U1 drives, 5 pin
Export 5V, triode Q3 1 pin be 5V high level, triode ON, and MOS1 exports low level.
As shown in figure 3, when N, PE wiring are normal, no electric current flows through on the left of optocoupler U3 so that optocoupler U3 does not drive
Dynamic, 5 pin output 0V, triode Q3 1 pin is 0V low levels, and triode is not turned on, MOS1 output high level.Several figures are above
Our self-designed ball bearing mades, the voltage between live wire and ground wire, zero line and live wire, ground wire and zero line is detected respectively.Only
Have as MOS2, MOS1, MOS3 in above-mentioned three figure, when output is respectively low level, low level, high level, just represent that 220V connects
Line is all correct.
By 3-8 decoders either other decoders or single-chip microcomputer etc. in Fig. 4, by above-mentioned MOS1, MOS2, MOS3
Signal changes into Q4 signal outputs（U4 9 pin）, when being grounded normal, Q4 signals are high level output, and triode Q1 is turned on, Q4
OUT exports low level, and triode Q2 is not turned on, and buzzer is failure to actuate, while triode Q6 is not turned on, nothing on the left of relay U401
Electric current, relay are failure to actuate；When being grounded abnormal, Q4 signals are low level output, and triode Q1 is not turned on, Q4 OUT outputs
High level, triode Q2 conductings, buzzer action alarm, while triode Q6 is turned on, and electric current is produced on the left of relay U401, after
Electrical equipment acts, and the sub- P3 of 4 core print seats connects output（Breaking circuit etc.）.So far, this method, which can be realized, occurs that wiring is not good to be connect
The output switch parameter control and the output of alarm sound of ground problem.
As shown in figure 5, circuit Integral Thought be by fire, fire, zero, zero, between three voltage detecting circuits output
Tri- logic states of MOS2, MOS1, MOS3（High or low level）, then pass through single-chip microcomputer（Decoder）Q4 signals are exported to control
Whether whether buzzer alarms and external output switch parameter, so as to judge instrument 220V power supplys and be grounded normal.
The present invention is carried and used for convenience, is typically integrated on one piece of circuit board and is used.
The present invention using the voltage detecting circuit that is formed with optocoupler and RC retardation ratio circuit to N, L, PE between any two
Voltage status is detected, the logic judging circuit then judged further according to the voltage status between N, L, PE.It can make
Meter recognition imperfect earth, find out the reason for precision instrument measured value is inaccurate.It can realize and externally export active, passive switch
Amount.Externally output alarm sound can be realized.
Claims (7)
- A kind of 1. grounded inspection circuit in continuous on line monitor table, it is characterised in that：It includes live wire and ground voltage between lines Voltage detecting circuit and Control output between voltage detecting circuit, zero line and ground wire between detection circuit, live wire and zero line Circuit, voltage detecting circuit, zero line and the inspection of ground voltage between lines between voltage detecting circuit, live wire and zero line between the live wire and ground wire It is connected after slowdown monitoring circuit is parallel with one another with Control output circuit, the Control output circuit includes single-chip microcomputer or translated Code device, the relay switching variable output circuit and buzzer alarm circuit that are connected on single-chip microcomputer or decoder output, institute State voltage detecting circuit between live wire and ground wire, voltage detecting circuit between voltage detecting circuit, zero line and ground wire between live wire and zero line It is connected after parallel with one another with the input of single-chip microcomputer or decoder.
- 2. the grounded inspection circuit in a kind of continuous on line monitor table according to claim 1, it is characterised in that：It is described Voltage detecting circuit includes the optocoupler U being connected in turn on L, PE between live wire and ground wire2, triode Q4, metal-oxide-semiconductor 2.
- 3. the grounded inspection circuit in a kind of continuous on line monitor table according to claim 2, it is characterised in that：It is described Voltage detecting circuit includes the optocoupler U being connected in turn on L, N between live wire and zero line1, triode Q3, metal-oxide-semiconductor 1.
- 4. the grounded inspection circuit in a kind of continuous on line monitor table according to claim 3, it is characterised in that：It is described Voltage detecting circuit includes the optocoupler U being connected in turn on N, PE between live wire and ground wire3, triode Q5, metal-oxide-semiconductor 3.
- 5. the grounded inspection circuit in a kind of continuous on line monitor table according to claim 4, it is characterised in that：It is described Outputting circuit for relay includes decoder either single-chip microcomputer, the triode Q1, the triode that are connected on decoder or single-chip microcomputer Q2, buzzer, triode Q6, relay U401, the triode Q2 and triode Q6 are connected in triode Q1 output in parallel End, the buzzer are connected to triode Q2 output end, and the relay U401 is connected to triode Q6 output end.
- 6. the grounded inspection circuit in a kind of continuous on line monitor table according to claim 5, it is characterised in that：Using Decoder used is 3-8 decoders during decoder.
- 7. a kind of detection method of the grounded inspection circuit in continuous on line monitor table as claimed in claim 5, its feature It is：It comprises the steps：1）When L, PE wiring are normal, there is electric current from optocoupler U2Flow through in left side so that optocoupler U2Driving, 5 pin output 5V, three poles Pipe Q4 1 pin is 5V high level, triode ON, MOS2 output low levels；2）When L, N wiring are normal, there is electric current from optocoupler U1Flow through in left side so that optocoupler U1Driving, 5 pin output 5V, triode Q3 1 pin is 5V high level, triode ON, MOS1 output low levels；3）When N, PE wiring are normal, without electric current from optocoupler U3Flow through in left side so that optocoupler U3Do not drive, 5 pin output 0V, Triode Q3 1 pin is 0V low levels, and triode is not turned on, MOS1 output high level；4）Set only as MOS2, MOS1, MOS3, when output is respectively low level, low level, high level, just represent 220V Wiring is all correct；5）By decoder or single-chip microcomputer, above-mentioned MOS1, MOS2, MOS3 signal is changed into Q4 signal outputs, works as ground connection When normal, Q4 signals are high level output, and triode Q1 is turned on, and Q4 OUT output low levels, triode Q2 is not turned on, buzzer It is failure to actuate, while triode Q6 is not turned on, no current on the left of relay U401, relay is failure to actuate；When being grounded abnormal, Q4 Signal is low level output, and triode Q1 is not turned on, Q4 OUT output high level, triode Q2 conductings, buzzer action alarm, Triode Q6 conductings simultaneously, relay U401 left sides produce electric current, the actuating of relay, and the sub- P3 of 4 core print seats connects output；6）So far, it is possible to achieve the output switch parameter control of the not good problem with grounding of wiring and the output of alarm sound occur.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710945642.2A CN107589338A (en) | 2017-10-12 | 2017-10-12 | Grounded inspection circuit and its detection method in continuous on line monitor table |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710945642.2A CN107589338A (en) | 2017-10-12 | 2017-10-12 | Grounded inspection circuit and its detection method in continuous on line monitor table |
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| CN107589338A true CN107589338A (en) | 2018-01-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108663595A (en) * | 2018-05-29 | 2018-10-16 | 广西电网有限责任公司电力科学研究院 | A kind of real-time inspection and control method of electrical equipment grounding state |
| CN110308361A (en) * | 2018-03-20 | 2019-10-08 | 浙江众邦机电科技有限公司 | A kind of grounded inspection circuit and detection method of sewing device |
| WO2022048366A1 (en) * | 2020-09-04 | 2022-03-10 | 苏州浪潮智能科技有限公司 | Potential difference early warning circuit and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110308361A (en) * | 2018-03-20 | 2019-10-08 | 浙江众邦机电科技有限公司 | A kind of grounded inspection circuit and detection method of sewing device |
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