CN208999527U - A kind of low voltage series fault electric arc experimental detection device - Google Patents
A kind of low voltage series fault electric arc experimental detection device Download PDFInfo
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- CN208999527U CN208999527U CN201821818205.0U CN201821818205U CN208999527U CN 208999527 U CN208999527 U CN 208999527U CN 201821818205 U CN201821818205 U CN 201821818205U CN 208999527 U CN208999527 U CN 208999527U
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Abstract
The utility model discloses a kind of low voltage series fault electric arc experimental detection devices, including power collecting circuit, amplifier comparison circuit and filtering output circuit, the power signal of the power collecting circuit acquisition low voltage series circuit, it is inputted in amplifier comparison circuit with transport and placing device AR3 with after phase amplified signal simultaneously, the amplifier comparison circuit uses transport and placing device AR2, the comparison circuit of transport and placing device AR1 and variable resistance RW1 composition compares transport and placing device AR3 signal export handle after in input filter output circuit, transport and placing device AR3 output signal current potential is detected with the compound circuit that variable resistance RW2 and triode Q1 is formed simultaneously, abnormal signal is released to greatly, it is exported after the filter circuit filtering that the last filtering output circuit is formed with transport and placing device AR5 and resistance R6- resistance R8, it realizes To the power signal real-time detection of low voltage series fault electric arc, and the function of low voltage series fault electric arc experimental detection device alarm system work alarm can be triggered in time.
Description
Technical field
The utility model relates to field of circuit technology, test detection dress more particularly to a kind of low voltage series fault electric arc
It sets.
Background technique
Fault electric arc press its occur position, electric arc in parallel and serial can be divided into, wherein serial arc due to electric current often
Less than route running current, and the duration is short, and low voltage series fault electric arc experimental detection device is aiming at series connection
The research device of electric arc, in actual operation, although the experiment of low voltage series fault electric arc is low-tension arc, in controlled range,
However, there remains the power signal real-time detections to low voltage series fault electric arc, prevent fault electric arc power excessive, destroy low
Press series fault arc experimental detection device.
So the utility model provides the new scheme of one kind to solve the problems, such as this.
Utility model content
For above situation, for the defect for overcoming the prior art, the utility model is designed to provide a kind of low pressure string
Join fault electric arc experimental detection device, have be skillfully constructed, the characteristic of human oriented design, can be to low voltage series fault electric arc
Power signal real-time detection, and can trigger in time low voltage series fault electric arc experimental detection device alarm system work alarm.
Its technical solution solved is a kind of low voltage series fault electric arc experimental detection device, including power collecting circuit,
Amplifier comparison circuit and filtering output circuit, the power signal of the power collecting circuit acquisition low voltage series circuit, same to luck
It is inputted in amplifier comparison circuit with transport and placing device AR3 with after phase amplified signal, the amplifier comparison circuit is with transport and placing device AR2, fortune
Input filter after the comparison circuit that device AR1 and variable resistance RW1 is formed compares processing to the transport and placing device AR3 signal exported is put to export
In circuit, while transport and placing device AR3 output signal current potential is detected with the compound circuit that variable resistance RW2 and triode Q1 is formed,
Abnormal signal is released to greatly, the last filtering output circuit uses the filter of transport and placing device AR5 and resistance R6- resistance R8 composition
It is exported after wave circuit filtering, output signal is the trigger signal of low voltage series fault electric arc experimental detection device alarm system；
The amplifier comparison circuit includes transport and placing device AR2, the collector of the homophase input termination triode Q1 of transport and placing device AR2
With one end of resistance R5, the anode of another terminating diode D5 of resistance R5 and the non-inverting input terminal of transport and placing device AR1, diode D5
Cathode connect the contact 1 of variable resistance RW2, contact 3, the contact 2 of variable resistance RW2 meets the base stage of triode Q1, triode Q1
Emitter ground connection, transport and placing device AR2 anti-phase input termination variable resistance RW1 contact 2 and resistance R4 one end, variable resistance
The inverting input terminal of one end of the 1 connecting resistance R3 of contact of RW1 and the contact 3 of variable resistance RW1, transport and placing device AR1, transport and placing device AR2
Output terminating resistor R4, the other end of resistance R3 and the output end of transport and placing device AR1.
Due to the use of above technical scheme, the utility model has the following advantages that compared with prior art；
1, transport and placing device AR3 is exported with the comparison circuit that transport and placing device AR2, transport and placing device AR1 and variable resistance RW1 are formed
Signal compares after processing in input filter output circuit, can stabilization signal quiescent point, while by adjusting variable resistance
The resistance value of RW1, the current potential size of adjustable comparison circuit output signal, while using variable resistance RW2 and triode Q1 group
At compound circuit detect transport and placing device AR3 output signal current potential, the effect of deamplification is played with variable resistance RW2, only
Through overdamping could trigger triode Q1 work, when transport and placing device AR3 output signal is abnormal high level signal, triode at this time
Q1 conducting releases abnormal signal to greatly, preventing abnormal signal from destroying circuit, when signal is normal signal, three pole at this time
Pipe Q1 is not turned on, but when abnormal signal, the output of amplifier comparison circuit is high level signal, can trigger low voltage series failure electricity
The work alarm of arc experimental detection device alarm system, realizes the power signal real-time detection to low voltage series fault electric arc, and
The function of low voltage series fault electric arc experimental detection device alarm system work alarm can be triggered in time.
Detailed description of the invention
Fig. 1 is a kind of module map of low voltage series fault electric arc experimental detection device of the utility model.
Fig. 2 is a kind of schematic diagram of low voltage series fault electric arc experimental detection device of the utility model.
Specific embodiment
Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached
Fig. 2 can be clearly presented in the detailed description of embodiment.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Embodiment one, a kind of low voltage series fault electric arc experimental detection device, including power collecting circuit, amplifier are more electric
Road and filtering output circuit, the power signal of the power collecting circuit acquisition low voltage series circuit, while using transport and placing device AR3
It is inputted in amplifier comparison circuit with after phase amplified signal, the amplifier comparison circuit uses transport and placing device AR2, transport and placing device AR1 and can
The comparison circuit of power transformation resistance RW1 composition compares transport and placing device AR3 signal export handle after in input filter output circuit, simultaneously
Transport and placing device AR3 output signal current potential is detected with the compound circuit that variable resistance RW2 and triode Q1 is formed, abnormal signal is let out
It puts to greatly, after the filter circuit filtering that the last filtering output circuit is formed with transport and placing device AR5 and resistance R6- resistance R8
Output, output signal are the trigger signal of low voltage series fault electric arc experimental detection device alarm system；
The comparison circuit pair that the amplifier comparison circuit is formed with transport and placing device AR2, transport and placing device AR1 and variable resistance RW1
The signal of transport and placing device AR3 output compares after processing in input filter output circuit, can stabilization signal quiescent point, lead to simultaneously
The resistance value of variable resistance RW1, the current potential size of adjustable comparison circuit output signal are overregulated, while using variable resistance
The compound circuit of RW2 and triode Q1 composition detects transport and placing device AR3 output signal current potential, plays decaying with variable resistance RW2
The effect of signal only works through overdamping ability trigger triode Q1, when transport and placing device AR3 output signal is abnormal high level letter
Number when, at this time triode Q1 be connected, by abnormal signal release to greatly, prevent abnormal signal destroy circuit, when signal is normal
When signal, triode Q1 is not turned at this time, but when abnormal signal, the output of amplifier comparison circuit is high level signal, transport and placing device
The collector of the homophase input termination triode Q1 of AR2 and one end of resistance R5, another terminating diode D5 of resistance R5 is just
The non-inverting input terminal of pole and transport and placing device AR1, the cathode of diode D5 connect the contact 1 of variable resistance RW2, contact 3, variable resistance
The contact 2 of RW2 connects the base stage of triode Q1, the emitter ground connection of triode Q1, the variable electricity of anti-phase input termination of transport and placing device AR2
Hinder the contact 2 of RW1 and one end of resistance R4, one end of the 1 connecting resistance R3 of contact of variable resistance RW1 and the touching of variable resistance RW1
The inverting input terminal of point 3, transport and placing device AR1, the other end and transport and placing device AR1 for exporting terminating resistor R4, resistance R3 of transport and placing device AR2
Output end.
Embodiment two, on the basis of example 1, the filtering output circuit is with transport and placing device AR5 and resistance R6- electricity
It is exported after the filter circuit filtering of resistance R8 composition, improves the anti-interference of signal, output signal is that low voltage series fault electric arc is real
The trigger signal for testing detection device alarm system, when power collecting circuit output signal is abnormal signal, amplifier compares at this time
Circuit output is high level signal, can trigger the work alarm of low voltage series fault electric arc experimental detection device alarm system, when
When signal is normal signal, the work alarm of low voltage series fault electric arc experimental detection device alarm system, resistance R6 cannot be triggered
A termination capacitor C3 one end and transport and placing device AR2 output end, one end of another termination capacitor C2 of resistance R6 and transport and placing device
The non-inverting input terminal of AR5, the other end ground connection of capacitor C2, the one of the anti-phase input terminating resistor R7 of transport and placing device AR5, resistance R8
End, the other end ground connection of resistance R8, the other end of the output termination capacitor C3 of transport and placing device AR5 and the other end and letter of resistance R7
Number output port.
Implement three, on the basis of example 1, the power collecting circuit selects the power collecting of model AD8318
Device J1 acquires the power signal of low voltage series circuit, while more electric with amplifier is inputted after phase amplified signal with transport and placing device AR3
In road, one end of the power supply termination capacitor C1 of power harvester J1 and the output termination capacitor C1 of power supply+5V, power harvester J1
The other end and inductance L1 one end and voltage-stabiliser tube D1 cathode, power harvester J1 ground terminal ground connection, voltage-stabiliser tube D1's
Plus earth, the anode of another terminating diode D2 of inductance L1, the cathode of diode D2 connect the homophase input of transport and placing device AR3
End, one end of the anti-phase input terminating resistor R1 of transport and placing device AR3, resistance R2, the other end ground connection of resistance R1, resistance R2's is another
Terminate the output end of transport and placing device AR3 and the anode of diode D5.
When the utility model is specifically used, a kind of low voltage series fault electric arc experimental detection device, including power collecting electricity
Road, amplifier comparison circuit and filtering output circuit, the power signal of the power collecting circuit acquisition low voltage series circuit, simultaneously
With transport and placing device AR3 with after phase amplified signal input amplifier comparison circuit in, the amplifier comparison circuit with transport and placing device AR2,
Input filter is defeated after the comparison circuit of transport and placing device AR1 and variable resistance RW1 composition compares processing to the transport and placing device AR3 signal exported
Out in circuit, can stabilization signal quiescent point, while the resistance value by adjusting variable resistance RW1, adjustable comparison is electric
The current potential size of road output signal, while transport and placing device AR3 is detected with the compound circuit that variable resistance RW2 and triode Q1 is formed
Output signal current potential plays the effect of deamplification with variable resistance RW2, only could trigger triode Q1 work through overdamping
Make, when transport and placing device AR3 output signal is abnormal high level signal, triode Q1 is connected at this time, and abnormal signal is released to big
Ground prevents abnormal signal from destroying circuit, and when signal is normal signal, triode Q1 is not turned at this time, but when abnormal signal,
The output of amplifier comparison circuit is high level signal, and the last filtering output circuit uses transport and placing device AR5 and resistance R6- resistance R8
It is exported after the filter circuit filtering of composition, output signal is the triggering of low voltage series fault electric arc experimental detection device alarm system
Signal；When power collecting circuit output signal is abnormal signal, amplifier comparison circuit output at this time is high level signal, can
Trigger the work alarm of low voltage series fault electric arc experimental detection device alarm system.
The above is to combine specific embodiment further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；Belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made expansion and the replacement of operating method, data should all be fallen in
Within scope of protection of the utility model.
Claims (3)
1. a kind of low voltage series fault electric arc experimental detection device, including power collecting circuit, amplifier comparison circuit and filtering are defeated
Circuit out, which is characterized in that the power signal of the power collecting circuit acquisition low voltage series circuit, while using transport and placing device
AR3 is inputted in amplifier comparison circuit with after phase amplified signal, the amplifier comparison circuit with transport and placing device AR2, transport and placing device AR1 and
The comparison circuit of variable resistance RW1 composition compares transport and placing device AR3 signal export handle after in input filter output circuit, together
The compound circuit of Shi Yunyong variable resistance RW2 and triode Q1 composition detects transport and placing device AR3 output signal current potential, by abnormal signal
It releases to greatly, the last filtering output circuit is filtered with the filter circuit that transport and placing device AR5 and resistance R6- resistance R8 is formed
After export, output signal be low voltage series fault electric arc experimental detection device alarm system trigger signal；
The amplifier comparison circuit includes transport and placing device AR2, the collector and electricity of the homophase input termination triode Q1 of transport and placing device AR2
One end of R5, the anode of another terminating diode D5 of resistance R5 and the non-inverting input terminal of transport and placing device AR1 are hindered, diode D5's is negative
Pole connects the contact 1 of variable resistance RW2, contact 3, and the contact 2 of variable resistance RW2 connects the base stage of triode Q1, the hair of triode Q1
Emitter grounding, the contact 2 of the anti-phase input termination variable resistance RW1 of transport and placing device AR2 and one end of resistance R4, variable resistance RW1
1 connecting resistance R3 of contact one end and the contact 3 of variable resistance RW1, transport and placing device AR1 inverting input terminal, transport and placing device AR2's is defeated
The output end of terminating resistor R4, the other end of resistance R3 and transport and placing device AR1 out.
2. a kind of low voltage series fault electric arc experimental detection device as described in claim 1, which is characterized in that the filtering output
Circuit includes resistance R6, one end of a termination capacitor C3 of resistance R6 and the output end of transport and placing device AR2, another termination of resistance R6
One end of capacitor C2 and the non-inverting input terminal of transport and placing device AR5, the other end ground connection of capacitor C2, the inverting input terminal of transport and placing device AR5
One end of connecting resistance R7, resistance R8, resistance R8 the other end ground connection, the other end of the output termination capacitor C3 of transport and placing device AR5 with
The other end and signal output port of resistance R7.
3. a kind of low voltage series fault electric arc experimental detection device as claimed in claim 2, which is characterized in that the power collecting
Circuit includes the power harvester J1 of model AD8318, and one end of the power supply termination capacitor C1 of power harvester J1 and power supply+
The cathode of the other end of output termination capacitor C1 of 5V, power harvester J1 and one end of inductance L1 and voltage-stabiliser tube D1, power
The ground terminal of collector J1 is grounded, the plus earth of voltage-stabiliser tube D1, the anode of another terminating diode D2 of inductance L1, diode
The cathode of D2 connects the non-inverting input terminal of transport and placing device AR3, one end of the anti-phase input terminating resistor R1 of transport and placing device AR3, resistance R2, electricity
Hinder the other end ground connection of R1, the output end of another termination transport and placing device AR3 of resistance R2 and the anode of diode D5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821818205.0U CN208999527U (en) | 2018-11-06 | 2018-11-06 | A kind of low voltage series fault electric arc experimental detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821818205.0U CN208999527U (en) | 2018-11-06 | 2018-11-06 | A kind of low voltage series fault electric arc experimental detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208999527U true CN208999527U (en) | 2019-06-18 |
Family
ID=66807403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821818205.0U Expired - Fee Related CN208999527U (en) | 2018-11-06 | 2018-11-06 | A kind of low voltage series fault electric arc experimental detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208999527U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554289A (en) * | 2019-10-14 | 2019-12-10 | 河南理工大学 | Low-voltage series fault arc detection system |
-
2018
- 2018-11-06 CN CN201821818205.0U patent/CN208999527U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110554289A (en) * | 2019-10-14 | 2019-12-10 | 河南理工大学 | Low-voltage series fault arc detection system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190618 Termination date: 20191106 |