CN207263863U - A kind of grounded inspection circuit in continuous on line monitor table - Google Patents
A kind of grounded inspection circuit in continuous on line monitor table Download PDFInfo
- Publication number
- CN207263863U CN207263863U CN201721310672.8U CN201721310672U CN207263863U CN 207263863 U CN207263863 U CN 207263863U CN 201721310672 U CN201721310672 U CN 201721310672U CN 207263863 U CN207263863 U CN 207263863U
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage detecting
- firewire
- detecting circuit
- triode
- 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.)
- Active
Links
Landscapes
- Fire Alarms (AREA)
Abstract
The utility model discloses the grounded inspection circuit in a kind of continuous on line monitor table, including voltage detecting circuit between firewire and ground wire, voltage detecting circuit between firewire and zero curve, voltage detecting circuit and relay control output circuit between zero curve and ground wire, voltage detecting circuit between firewire and ground wire, voltage detecting circuit between firewire and zero curve, it is connected after voltage detecting circuit is parallel with one another between zero curve and ground wire with relay control output circuit, the relay control output circuit includes microcontroller or decoder, relay switching variable output circuit and the buzzer alarm circuit being connected on microcontroller or decoder output, voltage detecting circuit between firewire and ground wire, voltage detecting circuit between firewire and zero curve, it is connected after voltage detecting circuit is parallel with one another between zero curve and ground wire with the input terminal of microcontroller or decoder.The utility model can be very good detection field instrument whether normal ground so that Meter recognition imperfect earth, finds out the reason for precision instrument measured value is inaccurate.
Description
Technical field
It the utility model is related to the earthing detection electricity in a kind of detection circuit, more particularly to a kind of continuous on line monitor table
Road.
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.
Utility model content
The utility model is in order to solve above-mentioned defect existing in the prior art and deficiency, there is provided one kind can be very good
Detect field instrument whether normal ground so that Meter recognition imperfect earth, finds out the reason for precision instrument measured value is inaccurate
Grounded inspection circuit in continuous on line monitor table.
The technical solution of the utility model：A kind of grounded inspection circuit in continuous on line monitor table, including firewire and
Voltage detecting circuit and relay between voltage detecting circuit, zero curve and ground wire between voltage detecting circuit, firewire and zero curve between ground wire
Device control output circuit, voltage detecting circuit, zero curve and ground between voltage detecting circuit, firewire and zero curve between the firewire and ground wire
It is connected after voltage between lines detection circuit is parallel with one another with relay control output circuit, the relay control output circuit includes
Microcontroller or decoder, the relay switching variable output circuit and buzzer report being connected on microcontroller or decoder output
Alert circuit, voltage detecting circuit, zero curve and ground voltage between lines between voltage detecting circuit, firewire and zero curve between the firewire and ground wire
It is connected after detection circuit is parallel with one another with the input terminal of microcontroller or decoder.
Preferably, voltage detecting circuit includes the optocoupler U being connected in turn on L, PE between the firewire 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 firewire and zero curve1, triode
Q3, metal-oxide-semiconductor 1.
Preferably, voltage detecting circuit includes the optocoupler U being connected in turn on N, PE between the firewire and ground wire3, three poles
Pipe Q5, metal-oxide-semiconductor 3.
Preferably, the outputting circuit for relay include decoder either microcontroller, be connected to decoder or microcontroller
On triode Q1, triode Q2, buzzer, triode Q6, relay U401, the triode Q2 and triode Q6 are in parallel even
The output terminal of triode Q1 is connected on, the buzzer is connected to the output terminal of triode Q2, and the relay U401 is connected to three
The output terminal of pole pipe Q6.
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 following steps：
1）When the wiring of L, PE are normal, there is electric current from optocoupler U2Flow through in left side so that optocoupler U2Driving, 5 feet output 5V,
1 foot of triode Q4 is 5V high level, triode ON, MOS2 output low levels；
2）When the wiring of L, N are normal, there is electric current from optocoupler U1Flow through in left side so that optocoupler U1Driving, 5 feet output 5V, three
1 foot of pole pipe Q3 is 5V high level, triode ON, MOS1 output low levels；
3）When the wiring of N, PE are normal, without electric current from optocoupler U3Flow through in left side so that optocoupler U3Do not drive, the output of 5 feet
1 foot of 0V, triode Q3 are 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 microcontroller, above-mentioned MOS1, MOS2, MOS3 signal is changed into Q4 signal outputs, when
When being grounded 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, bee
Ring device is failure to actuate, while triode Q6 is not turned on, and no current on the left of relay U401, relay is failure to actuate；It is abnormal when being grounded
When, Q4 signals are low level output, and triode Q1 is not turned on, Q4 OUT output high level, triode Q2 conductings, buzzer action
Alarm, while triode Q6 is turned on, and electric current, the actuating of relay are produced on the left of relay U401, the sub- P3 of 4 core print seats connects output；
6）So far, it is possible to achieve occur the not good problem with grounding of wiring output switch parameter control and alarm sound it is defeated
Go out.
The utility model can be very good detection field instrument whether normal ground so that Meter recognition imperfect earth, looks for
Go out the reason for precision instrument measured value is inaccurate；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 utility model；
Fig. 2 is the schematic diagram of the voltage detecting circuit between firewire and ground wire in the utility model；
Fig. 3 is the schematic diagram of the voltage detecting circuit between firewire and zero curve in the utility model；
Fig. 4 is the schematic diagram of the voltage detecting circuit between zero curve and ground wire in the utility model；
Fig. 5 is the schematic diagram of the utility model repeat circuit output control circuit.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, but is not that model is protected to the utility model
The limitation enclosed.
As shown in Figure 1, when the wiring of L, PE are normal, there is electric current to be flowed through on the left of optocoupler U2 so that optocoupler U2 drives, and 5
Foot exports 5V, and 1 foot of triode Q4 be 5V high level, triode ON, and MOS2 exports low level.
As shown in Fig. 2, when the wiring of L, N are normal, there is electric current to be flowed through on the left of optocoupler U1 so that optocoupler U1 drives, 5 feet
Export 5V, 1 foot of triode Q3 be 5V high level, triode ON, and MOS1 exports low level.
As shown in figure 3, when the wiring of N, PE are normal, no electric current flows through on the left of optocoupler U3 so that optocoupler U3 does not drive
Dynamic, 5 feet output 0V, 1 foot of triode Q3 is 0V low levels, and triode is not turned on, MOS1 output high level.Several figures are above
Our self-designed ball bearing mades, detect the voltage between firewire and ground wire, zero curve and firewire, ground wire and zero curve 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 microcontroller etc. in Fig. 4, by above-mentioned MOS1, MOS2, MOS3
Signal changes into Q4 signal outputs（9 feet of U4）, 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
Electric appliance 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 microcontroller（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 utility model is carried and used for convenience, is typically integrated on one piece of circuit board and is used.
The utility model use the voltage detecting circuit that is formed with optocoupler and RC retardation ratio circuit to N, L, PE two-by-two it
Between voltage status be detected, the logic judging circuit then judged further according to the voltage status between N, L, PE.Can
So that Meter recognition imperfect earth, finds out the reason for precision instrument measured value is inaccurate.Can realize externally export it is active, passive
Switching value.It can realize externally output alarm sound.
Claims (6)
- A kind of 1. grounded inspection circuit in continuous on line monitor table, it is characterised in that：It includes firewire and ground voltage between lines Voltage detecting circuit and relay control output between voltage detecting circuit, zero curve and ground wire between detection circuit, firewire and zero curve Circuit, voltage detecting circuit, zero curve and the inspection of ground voltage between lines between voltage detecting circuit, firewire and zero curve between the firewire and ground wire It is connected after slowdown monitoring circuit is parallel with one another with relay control output circuit, the relay control output circuit includes microcontroller or translates Code device, the relay switching variable output circuit and buzzer alarm circuit that are connected on microcontroller or decoder output, institute State voltage detecting circuit between firewire and ground wire, voltage detecting circuit between voltage detecting circuit, zero curve and ground wire between firewire and zero curve It is connected after parallel with one another with the input terminal of microcontroller 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 firewire 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 firewire and zero curve1, 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 firewire 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 microcontroller, the triode Q1, the triode that are connected on decoder or microcontroller Q2, buzzer, triode Q6, relay U401, the triode Q2 and triode Q6 are connected in the output of triode Q1 in parallel End, the buzzer are connected to the output terminal of triode Q2, and the relay U401 is connected to the output terminal of triode Q6.
- 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721310672.8U CN207263863U (en) | 2017-10-12 | 2017-10-12 | A kind of grounded inspection circuit in continuous on line monitor table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721310672.8U CN207263863U (en) | 2017-10-12 | 2017-10-12 | A kind of grounded inspection circuit in continuous on line monitor table |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207263863U true CN207263863U (en) | 2018-04-20 |
Family
ID=61917383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721310672.8U Active CN207263863U (en) | 2017-10-12 | 2017-10-12 | A kind of grounded inspection circuit in continuous on line monitor table |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207263863U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589338A (en) * | 2017-10-12 | 2018-01-16 | 杭州春来科技有限公司 | Grounded inspection circuit and its detection method in continuous on line monitor table |
| CN114002505A (en) * | 2021-10-29 | 2022-02-01 | 广东浦尔顿科技有限公司 | Charging pile grounding detection method and system |
-
2017
- 2017-10-12 CN CN201721310672.8U patent/CN207263863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107589338A (en) * | 2017-10-12 | 2018-01-16 | 杭州春来科技有限公司 | Grounded inspection circuit and its detection method in continuous on line monitor table |
| CN114002505A (en) * | 2021-10-29 | 2022-02-01 | 广东浦尔顿科技有限公司 | Charging pile grounding detection method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102890210B (en) | Fault detection device and method | |
| US20120051888A1 (en) | Abnormal vibration detection unit for wind turbine generator | |
| CN107589338A (en) | Grounded inspection circuit and its detection method in continuous on line monitor table | |
| CN207263863U (en) | A kind of grounded inspection circuit in continuous on line monitor table | |
| CN101452049A (en) | Circuit failure testing method, apparatus and single board | |
| CN207232324U (en) | A kind of fault diagnosis circuit of low side driving | |
| CN201528224U (en) | High-tension line electrified detecting and locking device | |
| JP2009081928A (en) | Apparatus for detecting leakage current | |
| CN107271862A (en) | A kind of high-tension switch cabinet partial discharge monitoring device | |
| CN212586508U (en) | Switch detection circuit and vehicle | |
| CN105093048B (en) | Port detecting system and there is its vehicle | |
| CN104777436A (en) | Novel alternating current power supply monitoring device | |
| CN208076677U (en) | A kind of electric machine fault on-line diagnostic device | |
| CN203396891U (en) | Transformer wire fracture detection device | |
| CN207833327U (en) | A kind of electric machine controller insulation detecting circuit | |
| CN103245882A (en) | Integrated power failure indication and condition monitoring device | |
| CN207184027U (en) | A kind of USB interface is to vehicle power short-circuit protection circuit | |
| CN203616422U (en) | Input signal state detecting device and electric automobile provided with same | |
| CN202502139U (en) | High-voltage charged display device | |
| CN206254938U (en) | A kind of vehicle gas circuit Intelligent drainage water valve feedback control circuit | |
| CN108237305A (en) | Electric welding machine power-down protection apparatus and electric welding machine | |
| CN107515353A (en) | A kind of bis- neutral conductor operation intelligent monitors of PT/CT | |
| CN202904290U (en) | Control and protection switch controller with temperature detection function | |
| CN207318618U (en) | A kind of bis- neutral conductor operation intelligent monitors of PT/CT | |
| CN208092163U (en) | A kind of EKL5-D-Q novel cables type accident indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |