CN107121589A - A kind of digital 220kV electroscope for power transmission line - Google Patents
A kind of digital 220kV electroscope for power transmission line Download PDFInfo
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- CN107121589A CN107121589A CN201710254840.4A CN201710254840A CN107121589A CN 107121589 A CN107121589 A CN 107121589A CN 201710254840 A CN201710254840 A CN 201710254840A CN 107121589 A CN107121589 A CN 107121589A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
Abstract
The present invention relates to a kind of digital 220kV electroscope for power transmission line.Solve that electroscope sensitivity is not high in the prior art, there is electrical verification blind area, the problem of crisis operating personnel personal safety and power supply safety.Electroscope includes front-end detection unit, input block, signal processing unit, acousto-optic warning unit, output display unit, front-end detection unit is connected with input block, input block is connected with signal processing unit, output display unit respectively, and sound light alarming circuit is connected with signal processing unit.The present invention can automatically select input gear according to electric-field intensity, improve electroscope sensitivity, it is to avoid electrical verification blind area, improve the reliability of electroscope, protect the personal safety of power equipment maintaining personnel.Specific magnitude of voltage can be shown by output display unit so that operating personnel, which can understand, learns whether powered to be measured be, and it is that institute is with voltage for which kind of voltage, is that operating personnel's site examining and repairing and emergency disposal are brought convenience.
Description
Technical field
The present invention relates to electrical technology field, more particularly, to a kind of digital 220kV electroscope for power transmission line.
Background technology
At present, contact high voltage electroscope is widely used in high-tension power transmission and transformation equipment maintenance process, for detecting high pressure
Whether overhead transmission line, cable run, high voltage electric equipment are powered.It is based primarily upon principle of capacitive divider design, using light and
Buzzer is used as alarm signal.But condensing type electroscope is in actual use, stray capacitance is by real work over the ground
The influence of environment and operating position is larger, and the situation of voltage, 220kV voltage class capacitor types can not normally be identified by electroscope occur
Particularly in 220kV conductors on quad bundled electrical verifications, there is electrical verification blind area when carrying out electrical verification to split conductor circuit in electroscope,
Electroscope is not alarmed in the case of i.e. circuit is powered.In terms of the improvement of contact high voltage testing, domestic literature is mainly reported
Increase contact electrode extension, insulating bar is changed to the methods such as insulation ropes, using the above method improve electrical verification sensitivity and
Portability.And for the electrical verification blind zone problem of the different division number wires of 220KV, in the market does not occur relevant report and related production also
Product.
Electroscope is to measure the equipment that the principle of high-voltage leakage current value carrys out work, due to constituting the main member of indicator
Part is electric field-sensitive device, and electroscope is easily disturbed by high voltage electric field.It is enough to make when the induced voltage of power failure equipments reaches
When electroscope sends sound and light alarm, electroscope will instruction equipment it is powered, occur false alarm.Existing electroscope can only judge to be measured
Whether object is powered, it is impossible to determine object under test occurrence with voltage, i.e., existing electroscope not can determine that on object under test
The voltage of institute's band is normal rating voltage, residual voltage or electrostatic induction voltage, and this works to site examining and repairing and emergency disposal
Difficulty is brought, seriously jeopardizes the person and power supply safety.Sentenced mostly by the powered information summary of peripheral equipment or circuit at present
Disconnected cause that electroscope starts is that circuit is powered or induced electricity, more poorly efficient, cumbersome.
The content of the invention
Electroscope sensitivity is not high in the prior art, there is electrical verification blind area for the present invention mainly solution, crisis operating personnel
The problem of personal safety and power supply safety, and voltage is not shown, it is necessary to by other auxiliary public transport so that operation
Poorly efficient and cumbersome the problem of, there is provided a kind of digital 220kV electroscope for power transmission line.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：A kind of digital 220kV
Electroscope for power transmission line, including front-end detection unit, input block, signal processing unit, acousto-optic warning unit, output display list
Member, front-end detection unit is connected with input block, and input block is connected with signal processing unit, output display unit respectively, sound
Optical alarm circuit is connected with signal processing unit, and wherein front-end detection unit inputs shelves according to electric-field intensity adjust automatically electroscope
Position.The present invention can automatically select input gear according to electric-field intensity, improve electroscope sensitivity, it is to avoid electrical verification blind area,
The reliability of electroscope is improved, the personal safety of power equipment maintaining personnel is protected.Front-end detection unit uses small resistor partial pressure
Formula structure measurement institute electrical verification pressure, it is applied widely, only need an electroscope just can tackle various working, reduce operating personnel to testing
The carrying quantity of electrical equipment.The present invention can also be shown specific magnitude of voltage by output display unit so that operating personnel's energy
Clearly learn whether powered to be measured be, and it is that institute is with voltage for which kind of voltage, is operating personnel's site examining and repairing and emergency disposal band
To facilitate.
As a kind of preferred scheme, the electricity that the front-end detection unit includes contact electrode, detected to electric-field intensity
Field sensor, converting unit, the multi-channel switch selecting unit, electric-field sensor that electric-field intensity is converted into corresponding control signal
It is connected with converting unit, converting unit is connected in multi-channel switch selecting unit control end, contact electrode is connected to multichannel
On switch selecting unit input, multi-channel switch selecting unit output end is connected on input block.Pass through inspection in this programme
Electric field intensity signal is surveyed, is converted into controlling the control signal of multi-channel switch selecting unit according to electric-field intensity grade, is controlled many
Channel switch selects one of gear circuit to turn on according to control signal.This programme improves electroscope sensitivity, it is to avoid
Electrical verification blind area, improves the reliability of electroscope, protects the personal safety of power equipment maintaining personnel.
As a kind of preferred scheme, the multi-channel switch selecting unit is four-way switch selecting unit, and multichannel is opened
Closing selecting unit includes the first analog switch K1, the second analog switch K2, the 3rd analog switch K3, the 4th analog switch K4, shelves
Position resistance R1, gear resistance R2, gear resistance R3, gear resistance R4, contact electrode respectively with first analog switch K1 one end, the
Two analog switch K2 one end, the 3rd analog switch K3 one end, the 4th analog switch K4 one end are connected, and the first analog switch K1 is another
End is connected with gear resistance R1 one end, and the second analog switch K2 other ends are connected with gear resistance R2 one end, the 3rd analog switch
The K3 other ends are connected with gear resistance R3 one end, and the 4th analog switch K4 other ends are connected with gear resistance R4 one end, gear electricity
The resistance R1 other ends, the gear resistance R2 other ends, the gear resistance R3 other ends, the gear resistance R4 other ends are respectively connected together work
For multi-channel switch selecting unit output end, converting unit includes four control output ends, and four control output ends are respectively with the
One analog switch K1 control ends, the second analog switch K control ends, the 3rd analog switch K3 control ends, the 4th analog switch K4 controls
End processed is connected.Resistance R5, resistance R6, triode Q1 constitute input current-limiting circuit, and resistance R7, resistance R8, electric capacity C1 are constituted
Passive low ventilating filter, electric capacity C1 is used for suppression device both end voltage rate of change, plays cushioning effect.Signal after filtering after can
Weaken higher hamonic wave, improve the stability of electroscope.
As a kind of preferred scheme, the input block include resistance R5, resistance R6, resistance R7, resistance R8, resistance R9,
Electric capacity C1, triode Q1, resistance R5 one end, triode Q1 emitter stages are connected respectively to power Vcc, the resistance R5 other ends and resistance
R6 is connected, and triode Q1 base stages are connected to the resistance R5 other ends, and triode Q1 colelctor electrodes are connected respectively to resistance R7 one end, resistance
R9 one end, the resistance R7 other ends are connected with resistance R8 one end, and the resistance R8 other ends are connected with signal processing unit, and resistance R9 is another
End ground connection, electric capacity C1 one end connection resistance R7 other ends, electric capacity C1 other ends ground connection.
As a kind of preferred scheme, the signal processing unit includes resistance R10, resistance R11, resistance R12, electric capacity C2,
And the NAND gate pipe being made up of NAND gate G1, NAND gate G2, NAND gate G3, NAND gate G4, NAND gate G1, the 1 of NAND gate pipe
Pin, 2 pin are connected with two inputs of NAND gate G1 respectively, 3 pin and the connection of NAND gate G1 output ends, 5 pin, 6 pin of NAND gate pipe
Respectively with the connection of two inputs of NAND gate G2,4 pin and the connection of NAND gate G2 output ends, 8 pin of NAND gate pipe, 9 pin respectively and
Two input connections of NAND gate G3,10 pin and the connection of NAND gate G3 output ends, 12 pin, 13 pin and the NAND gate G4 of NAND gate pipe
Two input connections, 11 pin and the connection of NAND gate G4 output ends, 1 pin are connected to 4 pin, 4 pin and resistance R12 after being connected with 2 pin
One end is connected, and 3 pin are connected with electric capacity C2 one end, acousto-optic warning unit respectively, and 5 pin are connected with resistance R11 one end, and resistance R11 is another
One end is grounded, and 6 pin are connected with resistance R10 one end, and the resistance R10 other ends are connected to electric capacity C2 after being connected with the resistance R12 other ends
Input block is connected to after the other end, the pin of NAND gate pipe 7 ground connection, 8 pin and the connection of 9 pin, 10 pin are connected with 12,13 pin respectively,
11 pin are connected with 5 pin, the pin of NAND gate pipe 14 connection power Vcc.This programme constitutes a multi-harmonic-oscillations module, NAND gate G1,
G3, G4 are to play a part of NOT gate, using the discharge and recharge of capacitor, when input voltage reaches the threshold voltage of NAND gate,
The output state of door is to change.
As a kind of preferred scheme, acousto-optic warning unit includes resistance R13, resistance R14, resistance R15, resistance R16, inductance
L1, light emitting diode D1, light emitting diode D2, triode Q2, triode Q3, buzzer, resistance R13, resistance R14, inductance L1
One end be connected respectively with power Vcc, the resistance R13 other ends are connected with light emitting diode D1 positive poles, light emitting diode D1 negative poles
Be connected with light emitting diode D2 positive poles, light emitting diode D2 negative poles are connected with triode Q2 emitter stages, the inductance other end respectively with
Buzzer output end, triode Q2 base stages are connected, and the resistance R14 other ends connect with resistance R15 one end, buzzer input respectively
Connect, the resistance R15 other ends are connected with triode Q2 colelctor electrodes, triode Q2 emitter stages are connected with triode Q3 colelctor electrodes, three poles
Pipe Q3 grounded emitters, resistance R16 one end is connected with signal processing unit, electric capacity C3 one end respectively, the resistance R16 other ends and three
Pole pipe Q3 base stages are connected, electric capacity C3 other ends ground connection.Multi-harmonic-oscillations loop exports the square wave of fixed frequency, rectangular pulse signal
Reach triode Q2 base stage as input signal, triode Q2, Q3 Discontinuous Conduction, light emitting diode D2, D3 and buzzer connect
Lead to negative pole and send interrupted visual alarm and audible ringing signal, Suo Ce roads are provided with high-tension to electrical verification operator
Signal.
As a kind of preferred scheme, output display unit include be sequentially connected amplifying unit, Current Voltage converting unit,
D/A conversion unit, digital display unit, amplifying unit input are connected with input block output end.Amplifying unit is defeated to electric current
Enter signal to be amplified, Current Voltage converting unit is mainly made up of resistor, by electric resistance partial pressure complete signal transformation and
Conditioning, D/A conversion unit to signal carry out digital-to-analogue conversion, complete analog voltage signal to numerical signal transformation, finally by
Digital display unit is shown.
As a kind of preferred scheme, electroscope includes lever, and lever is connected with expansion link one end, the connection of the expansion link other end
Box body is indicated, unit is in indication box body, and the contact electrode is arranged at the top of indication box, in lever with stretching
Handguard is additionally provided with one end of bar connection.
As a kind of preferred scheme, display screen is additionally provided with grip, the display screen is connected with input block.We
Case is additionally mounted to have display piece in grip so that operating personnel can see magnitude of voltage in real time in operation, solve general incite somebody to action
Display unit, which is arranged on, to be indicated on box body, the problem of being difficult to check during operation.
Therefore, it is an advantage of the invention that：Input gear can be automatically selected according to electric-field intensity, electroscope is improved sensitive
Degree, it is to avoid electrical verification blind area, improves the reliability of electroscope, protects the personal safety of power equipment maintaining personnel.Can be by specifically
Magnitude of voltage is shown by output display unit so that operating personnel, which can understand, learn to be measured to be whether powered, and institute's band
Which kind of voltage voltage is, is that operating personnel's site examining and repairing and emergency disposal are brought convenience.
Brief description of the drawings
Accompanying drawing 1 is a kind of control structure frame diagram of the present invention；
Accompanying drawing 2 is a kind of electrical block diagram of front-end detection unit in the present invention；
Accompanying drawing 3 is a kind of electrical block diagram of input block in the present invention；
Accompanying drawing 4 is a kind of electrical block diagram of signal processing unit in the present invention；
Accompanying drawing 5 is a kind of electrical block diagram of acousto-optic warning unit in the present invention；
Accompanying drawing 6 is a kind of circuit block diagram of output display unit in the present invention；
Accompanying drawing 7 is a kind of structural representation of the present invention.
1- front-end detection unit 2- input block 3- signal processing unit 4- output display unit 5- acousto-optic reports
Alert unit 6- contact electrode 7- multi-channel switch selecting unit 8- converting unit 9- electric-field sensors 10- amplifications are single
First 11- Current Voltages converting unit 12- D/A conversion units 13- digital display unit 14- lever 15- handguards
16- expansion links 17- indicates box body.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment：
A kind of digital 220kV electroscope for power transmission line of the present embodiment, as shown in figure 1, single including front-end detection unit 1, input
Member 2, signal processing unit 3, acousto-optic warning unit 5, output display unit 4.Front-end detection unit is adjusted automatically according to electric-field intensity
Whole electroscope inputs gear.Front-end detection unit is connected with input block, and input block is aobvious with signal processing unit, output respectively
Show that unit is connected, sound light alarming circuit is connected with signal processing unit.
As shown in Fig. 2 front-end detection unit include contact electrode 6, electric-field intensity is detected electric-field sensor 9,
Electric-field intensity is converted into converting unit 8, the multi-channel switch selecting unit 7 of corresponding control signal.Electric-field sensor and conversion
Unit is connected, and converting unit is connected in multi-channel switch selecting unit control end, and contact electrode is connected to multi-channel switch choosing
Select on unit input, multi-channel switch selecting unit output end is connected on input block.
As shown in fig. 7, electroscope includes lever 14, lever is connected with the one end of expansion link 16, and the connection of the expansion link other end refers to
Show box body 17, unit is arranged in indication box body, contact electrode 6 is arranged on indication box top, in lever and expansion link
Handguard 15 is additionally provided with one end of connection.Display data is observed in operating for convenience, display screen is additionally provided with grip,
The display screen is connected with input block.
Multi-channel switch selecting unit is four-way switch selecting unit, and multi-channel switch selecting unit includes the first simulation
Switch K1, the second analog switch K2, the 3rd analog switch K3, the 4th analog switch K4, gear resistance R1, gear resistance R2, shelves
Position resistance R3, gear resistance R4, contact electrode respectively with first analog switch K1 one end, second analog switch K2 one end, the 3rd
Analog switch K3 one end, the 4th analog switch K4 one end are connected, and the first analog switch K1 other ends connect with gear resistance R1 one end
Connect, the second analog switch K2 other ends are connected with gear resistance R2 one end, the 3rd analog switch K3 other ends and gear resistance R3
One end is connected, and the 4th analog switch K4 other ends are connected with gear resistance R4 one end, the gear resistance R1 other ends, gear resistance R2
The other end, the gear resistance R3 other ends, the gear resistance R4 other ends are respectively connected together as multi-channel switch selecting unit
Output end, converting unit includes four control output ends, four control output ends respectively with the first analog switch K1 control ends, the
Two analog switch K control ends, the 3rd analog switch K3 control ends, the 4th analog switch K4 control ends are connected.
As shown in figure 3, input block includes resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, electric capacity C1, three poles
Pipe Q1, resistance R5 one end, triode Q1 emitter stages are connected respectively to power Vcc, and the resistance R5 other ends are connected with resistance R6, three poles
Pipe Q1 base stages are connected to the resistance R5 other ends, and triode Q1 colelctor electrodes are connected respectively to resistance R7 one end, resistance R9 one end, resistance
The R7 other ends are connected with resistance R8 one end, and resistance R8 other ends formation output terminals A is connected with signal processing unit, and resistance R9 is another
End ground connection, electric capacity C1 one end connection resistance R7 other ends, electric capacity C1 other ends ground connection.
As shown in figure 4, signal processing unit includes resistance R10, resistance R11, resistance R12, electric capacity C2, and by NAND gate
The NAND gate pipe that G1, NAND gate G2, NAND gate G3, NAND gate G4 are constituted, NAND gate G1,1 pin of NAND gate pipe, 2 pin respectively and
The connection of two inputs of NAND gate G1,3 pin and the connection of NAND gate G1 output ends, 5 pin of NAND gate pipe, 6 pin are respectively and NAND gate
The connection of two inputs of G2,4 pin and the connection of NAND gate G2 output ends, 8 pin of NAND gate pipe, 9 pin respectively with NAND gate G3 two
Input is connected, 10 pin and the connection of NAND gate G3 output ends, and 12 pin, two inputs of 13 pin and NAND gate G4 of NAND gate pipe connect
Connect, 11 pin and the connection of NAND gate G4 output ends, 1 pin are connected to 4 pin after being connected with 2 pin, 4 pin are connected with resistance R12 one end, 3 pin
It is connected with electric capacity C2 one end, 3 pin also form output end B and are connected with acousto-optic warning unit, 5 pin are connected with resistance R11 one end, resistance
The R11 other ends are grounded, and 6 pin are connected with resistance R10 one end, and the resistance R10 other ends are connected to electricity after being connected with the resistance R12 other ends
Hold the C2 other ends, the pin of NAND gate pipe 7 ground connection forms input A1, input A1 is connected to input block after 8 pin and the connection of 9 pin
Output terminals A, 10 pin are connected with 12,13 pin respectively, and 11 pin are connected with 5 pin, the pin of NAND gate pipe 14 connection power Vcc.
As shown in figure 5, acousto-optic warning unit include resistance R13, it is resistance R14, resistance R15, resistance R16, inductance L1, luminous
Diode D1, light emitting diode D2, triode Q2, triode Q3, buzzer, resistance R13, resistance R14, inductance L1 one end point
It is not connected with power Vcc, the resistance R13 other ends are connected with light emitting diode D1 positive poles, light emitting diode D1 negative poles and luminous two
Pole pipe D2 positive poles are connected, and light emitting diode D2 negative poles are connected with triode Q2 emitter stages, and the inductance other end is defeated with buzzer respectively
Go out end, triode Q2 base stages to be connected, the resistance R14 other ends are connected with resistance R15 one end, buzzer input respectively, resistance R15
The other end is connected with triode Q2 colelctor electrodes, and triode Q2 emitter stages are connected with triode Q3 colelctor electrodes, triode Q3 emitter stages
Ground connection, resistance R16 one end is connected with electric capacity C3 one end, and the resistance R16 other ends are connected with triode Q3 base stages, the electric capacity C3 other ends
Ground connection.Resistance R16 one end forms input B1, and input B1 is connected with signal processing unit output end B.
As shown in fig. 6, output display unit includes amplifying unit 10, Current Voltage converting unit 11, the number being sequentially connected
Mould converting unit 12, digital display unit 13, amplifying unit input are connected with input block output terminals A.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although more having used the arts such as front-end detection unit, input block, signal processing unit, output display herein
Language, but it is not precluded from the possibility using other terms.It is used for the purpose of more easily describing and explaining this using these terms
The essence of invention；Any additional limitation is construed as all to disagree with spirit of the present invention.
Claims (9)
1. a kind of digital 220kV electroscope for power transmission line, it is characterised in that：Including front-end detection unit, input block, signal
Processing unit, acousto-optic warning unit, output display unit, front-end detection unit are connected with input block, input block respectively with
Signal processing unit, output display unit are connected, and sound light alarming circuit is connected with signal processing unit, wherein front-end detection unit
Gear is inputted according to electric-field intensity adjust automatically electroscope.
2. a kind of digital 220kV electroscope for power transmission line according to claim 1, it is characterized in that the front-end detection list
Member is converted into corresponding control signal including contact electrode, the electric-field sensor detected to electric-field intensity, by electric-field intensity
Converting unit, multi-channel switch selecting unit, electric-field sensor are connected with converting unit, and converting unit is connected to multi-channel switch
In selecting unit control end, contact electrode is connected on multi-channel switch selecting unit input, multi-channel switch selecting unit
Output end is connected on input block.
3. a kind of digital 220kV electroscope for power transmission line according to claim 2, it is characterized in that the multi-channel switch
Selecting unit is four-way switch selecting unit, and multi-channel switch selecting unit includes the first analog switch K1, the second simulation and opened
Close K2, the 3rd analog switch K3, the 4th analog switch K4, gear resistance R1, gear resistance R2, gear resistance R3, gear resistance
R4, contact electrode respectively with first analog switch K1 one end, second analog switch K2 one end, the 3rd analog switch K3 one end, the
Four analog switch K4 one end are connected, and the first analog switch K1 other ends are connected with gear resistance R1 one end, the second analog switch K2
The other end is connected with gear resistance R2 one end, and the 3rd analog switch K3 other ends are connected with gear resistance R3 one end, the 4th simulation
The switch K4 other ends are connected with gear resistance R4 one end, the gear resistance R1 other ends, the gear resistance R2 other ends, gear resistance R3
The other end, the gear resistance R4 other ends are respectively connected together as multi-channel switch selecting unit output end, converting unit bag
Four control output ends are included, four control output ends are controlled with the first analog switch K1 control ends, the second analog switch K respectively
End, the 3rd analog switch K3 control ends, the 4th analog switch K4 control ends are connected.
4. a kind of digital 220kV electroscope for power transmission line according to claim 1, it is characterized in that the input block bag
Include resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, electric capacity C1, triode Q1, resistance R5 one end, triode Q1 transmittings
Pole is connected respectively to power Vcc, and the resistance R5 other ends are connected with resistance R6, and triode Q1 base stages are connected to the resistance R5 other ends,
Triode Q1 colelctor electrodes are connected respectively to resistance R7 one end, resistance R9 one end, and the resistance R7 other ends are connected with resistance R8 one end, electricity
The resistance R8 other ends are connected with signal processing unit, resistance R9 other ends ground connection, electric capacity C1 one end connection resistance R7 other ends, electric capacity
The C1 other ends are grounded.
5. a kind of digital 220kV electroscope for power transmission line according to claim any one of 1-4, it is characterized in that the letter
Number processing unit includes resistance R10, resistance R11, resistance R12, electric capacity C2, and by NAND gate G1, NAND gate G2, NAND gate
The NAND gate pipe that G3, NAND gate G4 are constituted, NAND gate G1,1 pin of NAND gate pipe, 2 pin respectively with two inputs of NAND gate G1
Connection, 3 pin and the connection of NAND gate G1 output ends, 5 pin, 6 pin of NAND gate pipe are connected with two inputs of NAND gate G2 respectively, and 4
Pin and the connection of NAND gate G2 output ends, 8 pin of NAND gate pipe, 9 pin respectively with two inputs connections of NAND gate G3,10 pin and with
NOT gate G3 output ends are connected, 12 pin of NAND gate pipe, the two input connections of 13 pin and NAND gate G4, and 11 pin and NAND gate G4 are defeated
Go out end connection, 1 pin is connected to 4 pin after being connected with 2 pin, 4 pin are connected with resistance R12 one end, 3 pin respectively with electric capacity C2 one end, sound
Light alarm unit is connected, and 5 pin are connected with resistance R11 one end, and resistance R11 other ends ground connection, 6 pin are connected with resistance R10 one end, electricity
The resistance R10 other ends are connected to the electric capacity C2 other ends after being connected with the resistance R12 other ends, the pin of NAND gate pipe 7 ground connection, 8 pin and 9 pin connect
Input block is connected to after connecing, 10 pin are connected with 12,13 pin respectively, and 11 pin are connected with 5 pin, the pin of NAND gate pipe 14 connection power supply
Vcc。
6. a kind of digital 220kV electroscope for power transmission line according to claim any one of 1-4, it is characterized in that acousto-optic report
Alert unit includes resistance R13, resistance R14, resistance R15, resistance R16, inductance L1, light emitting diode D1, light emitting diode D2, three
Pole pipe Q2, triode Q3, buzzer, resistance R13, resistance R14, inductance L1 one end are connected with power Vcc respectively, resistance R13
The other end is connected with light emitting diode D1 positive poles, and light emitting diode D1 negative poles are connected with light emitting diode D2 positive poles, light-emitting diodes
Pipe D2 negative poles are connected with triode Q2 emitter stages, and the inductance other end is connected with buzzer output end, triode Q2 base stages respectively, electricity
The resistance R14 other ends are connected with resistance R15 one end, buzzer input respectively, the resistance R15 other ends and triode Q2 colelctor electrode phases
Even, triode Q2 emitter stages are connected with triode Q3 colelctor electrodes, triode Q3 grounded emitters, resistance R16 one end respectively with letter
Number processing unit, electric capacity C3 one end are connected, and the resistance R16 other ends are connected with triode Q3 base stages, and the electric capacity C3 other ends are grounded.
7. a kind of digital 220kV electroscope for power transmission line according to any one of claim 1 or 4, it is characterized in that output
Display unit includes amplifying unit, Current Voltage converting unit, D/A conversion unit, the digital display unit being sequentially connected, and puts
Big unit input is connected with input block output end.
8. a kind of digital 220kV electroscope for power transmission line according to Claims 2 or 3, it is characterized in that including lever, holding
Handle is connected with expansion link one end, and the connection of the expansion link other end indicates box body, and unit is arranged in indication box body, the contact
Electrode is additionally provided with handguard on being arranged at the top of indication box on one end that lever is connected with expansion link.
9. a kind of digital 220kV electroscope for power transmission line according to claim 8, it is characterized in that being also set up in grip
There is display screen, the display screen is connected with input block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710254840.4A CN107121589A (en) | 2017-04-18 | 2017-04-18 | A kind of digital 220kV electroscope for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710254840.4A CN107121589A (en) | 2017-04-18 | 2017-04-18 | A kind of digital 220kV electroscope for power transmission line |
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| CN201710254840.4A Pending CN107121589A (en) | 2017-04-18 | 2017-04-18 | A kind of digital 220kV electroscope for power transmission line |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655686A (en) * | 2018-12-18 | 2019-04-19 | 米艾西(福建)测控技术有限公司 | A kind of highly-safe novel detector bar |
| CN109655687A (en) * | 2018-12-18 | 2019-04-19 | 米艾西(福建)测控技术有限公司 | A kind of detector for high pressure detection |
| CN109991465A (en) * | 2019-05-07 | 2019-07-09 | 河北勃发电气化器材有限责任公司 | A kind of anti-interference type contact net skylight repairs Special electroscope |
| CN110596447A (en) * | 2019-07-09 | 2019-12-20 | 国网江苏省电力有限公司徐州供电分公司 | Electric field measurement-based charged equipment surrounding safety detection device and detection method thereof |
| CN110688272A (en) * | 2019-10-12 | 2020-01-14 | 重庆工商大学 | Fault diagnosis device for detecting internal circuit of computer |
| CN111537781A (en) * | 2020-05-07 | 2020-08-14 | 江永雄 | Control circuit of electric detector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655686A (en) * | 2018-12-18 | 2019-04-19 | 米艾西(福建)测控技术有限公司 | A kind of highly-safe novel detector bar |
| CN109655687A (en) * | 2018-12-18 | 2019-04-19 | 米艾西(福建)测控技术有限公司 | A kind of detector for high pressure detection |
| CN109991465A (en) * | 2019-05-07 | 2019-07-09 | 河北勃发电气化器材有限责任公司 | A kind of anti-interference type contact net skylight repairs Special electroscope |
| CN110596447A (en) * | 2019-07-09 | 2019-12-20 | 国网江苏省电力有限公司徐州供电分公司 | Electric field measurement-based charged equipment surrounding safety detection device and detection method thereof |
| CN110688272A (en) * | 2019-10-12 | 2020-01-14 | 重庆工商大学 | Fault diagnosis device for detecting internal circuit of computer |
| CN110688272B (en) * | 2019-10-12 | 2023-02-28 | 重庆工商大学 | Fault diagnosis device for detecting internal circuit of computer |
| CN111537781A (en) * | 2020-05-07 | 2020-08-14 | 江永雄 | Control circuit of electric detector |
| CN111537781B (en) * | 2020-05-07 | 2022-03-25 | 江永雄 | Control circuit of electric detector |
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Application publication date: 20170901 |