CN205720412U - One removably current potential livewire work special load current detection device - Google Patents
One removably current potential livewire work special load current detection device Download PDFInfo
- Publication number
- CN205720412U CN205720412U CN201620319175.3U CN201620319175U CN205720412U CN 205720412 U CN205720412 U CN 205720412U CN 201620319175 U CN201620319175 U CN 201620319175U CN 205720412 U CN205720412 U CN 205720412U
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- diode
- amplifier
- current
- 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.)
- Expired - Fee Related
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses one removably current potential livewire work special load current detection device, including high precision current transformer, current sample IV modular converter, voltage differential amplification module, difference bandpass filtering modules block, Chip Microcomputer A/D sampling module, other auxiliary equipment are made up of buzzer, instruction device, button, power circuit etc..The earth potential live operation Special electric flow detection device that this utility model provides, reasonable in design, volume is little, motility is good, practical, easy to operate, security performance is good, judge line current size by sound intuitively, light form, during efficiently solving ago current potential hot line job, use many drawbacks of the current detecting instrument of liquid crystal display, be effectively increased detection work efficiency and detection reliability.
Description
Technical field
The utility model discloses one removably current potential livewire work special load current detection device, relate to power construction inspection
Survey technical field of tools.
Background technology
At present, electric load demand persistently increases substantially, and quality, power off time, number of times and the reliability etc. of electric power are carried by user
Go out requirements at the higher level, carried out charging construction operation, reduce power failure range and power off time, it is ensured that meet user's demand to electric power,
Become the development trend of field of power transmission.
At present 10kV distribution high voltage line device livewire work construction method mainly have by the aerial lift device with insulated arm free-standing exercise practice, by
Insulating ladder or the insulated platform free-standing exercise practice and operating personnel are directly pedaled bar and are kept the earth potential insulating bar of same current potential to grasp with the earth
The practice.Above working system is respectively arranged with quality.Wherein earth potential working method is method of work the most original, simplest.In special circumstances
Under, it is advantageous that and do not limited by topography and geomorphology and various obstacle, can implement flexibly.Shortcoming is that personal security is protected relatively
Difference, it is impossible to the most free-hand enforcement operates, and working strength is big.Such as, alive circuit carry out to branched line release exit time,
It needs to be determined that all loads of branched line are all exited, it is ensured that branched line is in Light Condition, before conventional means is livewire work
Operation is exited in staff's load all to branched line, pedals bar the most again and utilizes insulation rod member to implement power operation.According to
Work requirements, it is possible to use the secondary before the most ripe clamp on amperemeter carries out operation dynamically detects, it is achieved to circuit before operation
Carry out current situation detection again, it is achieved the security protection of many means.Applied in actual production by conventional instrument, mainly deposit
In following deficiency:
1, conventional instrument is generally pointer or digital display pattern, and both modes are because of the distance between operating personnel and live detection point
, there are data and observe fuzzy, simultaneously as the impact of angle ground, cannot observe the most at all in relation.
2,10kV high pressure equipment is because the impact of electric field, and the measurement process total data of digital display pattern shows extremely unstable, and circuit is real
The correct current status in border has no idea to ensure, to a certain degree causes error in judgement.
Utility model content
Technical problem to be solved in the utility model is: for the defect of prior art, in combination the intrinsic spy of current potential livewire work
Point and demand, develop a kind of reasonable in design, and volume is little, and motility is good, and specialty is practical, easy-to-operate, surely
The removably current potential livewire work sound-light type current sensing means that qualitative energy is good
This utility model is for solving above-mentioned technical problem by the following technical solutions:
One removably current potential livewire work special load current detection device, including high precision current transformer, current sample
IV modular converter, voltage differential amplification module, difference bandpass filtering modules block, single-chip microcomputer and auxiliary equipment module, described high-precision
The outfan of degree current transformer is connected with the input of current sample IV modular converter, current sample IV modular converter defeated
Going out end to be connected with the input of difference bandpass filtering modules block, the outfan of difference bandpass filtering modules block accesses single-chip microcomputer, single-chip microcomputer
Also it is connected with auxiliary equipment module；
Described auxiliary equipment module includes buzzer, instruction device, button and power circuit.
As further preferred scheme of the present utility model, being provided with AD sampling module in described single-chip microcomputer, described AD samples mould
D. c. voltage signal through over-sampling and process is converted to digital signal, described digital signal output to buzzer and instruction dress by block
Put, make corresponding action by the corresponding relation set, buzzer and instruction device.
As further preferred scheme of the present utility model, when described detection device is applied to high-tension circuit environment, at detection dress
The detection position put increases screening arrangement.
As further preferred scheme of the present utility model, the concrete model of described single-chip microcomputer is STM32L031F6P6.
As further preferred scheme of the present utility model, the band filter that described difference bandpass filtering modules block uses is 50HZ.
As further preferred scheme of the present utility model, in described voltage differential amplification module, the model of voltage stabilizing chip is
TPS65135。
As further preferred scheme of the present utility model, in described voltage differential amplification module, the model of amplification chip is
AD8236。
As further preferred scheme of the present utility model, the corresponding relation of described setting specifically includes:
Current acquisition is reported to the police, and within electric current 100mA, buzzer was every 2 seconds rings 100ms；
Within electric current 101-300mA, buzzer was every 2 seconds ring two sound, and every sound continues 100ma, two sound interval 200ms；
Within electric current 301mA-1000mA, buzzer is every 500ms ring 100ms；
Electric current is more than 1000mA, and buzzer yowls；
Described instruction device is LED light, and flashing mode is Tong Bu with buzzer.
As further preferred scheme of the present utility model, described power circuit also includes detecting device start voltage detection module,
Brownout after start being detected, buzzer rings two sound soon, and LED light flashes twice.
As further preferred scheme of the present utility model, described detection device is additionally provided with intervalometer, it is achieved delay switching-off function.
Concrete as further preferred scheme of the present utility model, described voltage differential amplification module and difference bandpass filtering modules block
Circuit connection structure includes the first to the 26th resistance, the first to the 17th electric capacity, the first to the 8th diode and first to
4th amplifier, wherein: one end of described first resistance is connected with one end of the 3rd resistance, one end of being connected socket respectively,
The other end ground connection of the first resistance, one end of described second resistance respectively with one end of the 4th resistance, the other end phase that is connected socket
Connect, the other end ground connection of the second resistance, the other end of the 3rd resistance respectively with one end of the first electric capacity, one end of the 3rd electric capacity,
The positive pole of the first diode, the negative pole of the 3rd diode, the 4th port of amplification chip are connected, another termination of the first electric capacity
Ground, the negative pole of the first diode and the negative pole of the second diode be connected, the other end of the 4th resistance respectively with the one of the second electric capacity
End, the first port of the other end of the 3rd electric capacity, the negative pole of the 4th diode, the positive pole of the second diode, amplification chip are connected
Connecing, the other end ground connection of the second electric capacity, the positive pole of the 3rd diode and the positive pole of the 4th diode are connected, the of amplification chip
Two-port netwerk is connected with the 3rd port of amplification chip after sequentially passing through the 5th resistance and the 6th resistance, the 8th port of amplification chip
It is connected with one end of the 4th electric capacity, one end of the 7th resistance, one end of the 8th resistance respectively, the other end of the 4th electric capacity and
The other end of seven resistance is connected and ground connection, the fifth port of amplification chip respectively with one end of the 5th electric capacity, the one of the 9th resistance
End, one end of the tenth resistance are connected, and the other end of the 5th electric capacity and the other end of the tenth resistance are connected and ground connection, amplify core
6th port of sheet is connected with one end, one end of the 12nd resistance of the 11st resistance respectively, another termination of the 12nd resistance
, the 7th port of amplification chip and one end of the 13rd resistance are connected, and the other end of the 13rd resistance is electric with the 14th respectively
One end of resistance, one end of the 6th electric capacity, one end of the 7th electric capacity are connected, the other end ground connection of the 14th resistance, the 6th electric capacity
The other end respectively with one end of the 15th resistance, one end of the 16th resistance, one end of the 22nd resistance, the first amplifier
Outfan be connected, the other end and the other end of the 15th resistance, the negative pole of the first amplifier of the 7th electric capacity are connected,
The other end of 16 resistance is connected with one end of the 17th resistance, one end of the 8th electric capacity, one end of the 9th electric capacity respectively, and
The other end of 17 resistance and the positive pole of the first amplifier are connected and ground connection, the other end of the 8th electric capacity respectively with the 18th resistance
One end, the negative pole of the second amplifier be connected, the other end of the 9th electric capacity and the other end of the 18th resistance are connected, second
The other end of 12 resistance after the 23rd resistance respectively with one end, the outfan phase of the second amplifier of the 24th resistance
Connecting, the other end of the 24th resistance ground connection after the 26th resistance, the negative pole of the 3rd amplifier is electric with the 19th respectively
One end of resistance, the positive pole of the 5th diode, one end of the 20th resistance are connected, the plus earth of the 3rd amplifier, and the 19th
The other end of resistance and the positive pole of the 4th amplifier are connected, the outfan of the 3rd amplifier respectively with the negative pole of the 5th diode,
The positive pole of the 7th diode is connected, the negative pole of the 4th amplifier respectively with the positive pole of the 6th diode, the one of the 21st resistance
End is connected, and the outfan of the 4th amplifier is connected with negative pole, the positive pole of the 8th diode of the 6th diode respectively, and the 8th
The negative pole of diode respectively with the other end of the 20th resistance, the other end of the 21st resistance, the negative pole of the 7th diode,
One end of 25 resistance is connected, and the pull-up voltage end of the amplifier group of first to fourth amplifier composition is after the tenth electric capacity
Ground connection, actuation voltage end ground connection after the 11st electric capacity of the amplifier group of first to fourth amplifier composition, the 25th electricity
The other end of resistance one end with the 12nd to the 17th electric capacity respectively is connected, and the other end of the 12nd to the 17th electric capacity interconnects mutually
Connect and ground connection.
This utility model compared with prior art, has following technical effect that this utility model is mainly in combination with earth potential live operation
Safety need and distinctive character, it is provided that a kind of reasonable in design, volume is little, and motility is good, it is adaptable to earth potential live is made
Industry is special, operates safety, judges intuitively, security performance and stability the most removably current potential livewire work sound-light type electric current
Detection device.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model；
Fig. 2 is voltage differential amplification module in this utility model, the electrical block diagram of difference bandpass filtering modules block；
Wherein: R1 to R26 is the first to the 26th resistance, C1 to C17 is the first to the 17th electric capacity, and D1 to D8 is
One to the 8th diode, A, B, C, D are respectively first to fourth amplifier.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, wherein certainly
Begin to same or similar label eventually represent same or similar element or there is the element of same or like function.Lead to below
It is exemplary for crossing the embodiment being described with reference to the drawings, and is only used for explaining this utility model, and can not be construed to this reality
With novel restriction.
Below in conjunction with the accompanying drawings the technical solution of the utility model is described in further detail:
System architecture diagram of the present utility model, as it is shown in figure 1, described removably current potential livewire work current sensing means, wraps
Include high precision current transformer, current sample IV modular converter, voltage differential amplification module, difference bandpass filtering modules block, monolithic
Machine and auxiliary equipment module, the outfan of described high precision current transformer is connected with the input of current sample IV modular converter
Connecing, the outfan of current sample IV modular converter is connected with the input of difference bandpass filtering modules block, difference bandpass filtering modules block
Outfan access single-chip microcomputer, single-chip microcomputer is also connected with auxiliary equipment module；Described auxiliary equipment module includes buzzer, refers to
Showing device, button and power circuit.
Being provided with AD sampling module in described single-chip microcomputer, the DC voltage through over-sampling and process is transferred the letter by described AD sampling module
Number it is changed to digital signal, described digital signal output to buzzer and instruction device, by the corresponding relation set, buzzer and referring to
Showing device makes corresponding action.When described detection device is applied to high-tension circuit environment, increase in the detection position of detection device
Add screening arrangement.
In a specific embodiment of the present utility model, the concrete model of described single-chip microcomputer is STM32L031F6P6；Described difference
The band filter that point bandpass filtering modules block uses is 50HZ；In described voltage differential amplification module, the model of voltage stabilizing chip is
TPS65135；In described voltage differential amplification module, the model of amplification chip is AD8236.
As further preferred scheme of the present utility model, the corresponding relation of described setting specifically includes:
Current acquisition is reported to the police, and within electric current 100mA, buzzer was every 2 seconds rings 100ms；
Within electric current 101-300mA, buzzer was every 2 seconds ring two sound, and every sound continues 100ma, two sound interval 200ms；
Within electric current 301mA-1000mA, buzzer is every 500ms ring 100ms；
Electric current is more than 1000mA, and buzzer yowls；
Described instruction device is LED light, and flashing mode is Tong Bu with buzzer.
As further preferred scheme of the present utility model, described power circuit also includes detecting device start voltage detection module,
Brownout after start being detected, buzzer rings two sound soon, and LED light flashes twice.
As further preferred scheme of the present utility model, described detection device is additionally provided with intervalometer, it is achieved delay switching-off function.
Voltage differential amplification module in this utility model, difference bandpass filtering modules block electrical block diagram as in figure 2 it is shown, institute
The physical circuit attachment structure stating voltage differential amplification module and difference bandpass filtering modules block includes the first to the 26th resistance, the
One to the 17th electric capacity, the first to the 8th diode and first to fourth amplifier, wherein: one end of described first resistance is divided
Not it is not connected with one end of the 3rd resistance, one end of being connected socket, the other end ground connection of the first resistance, the one of described second resistance
End is connected with one end of the 4th resistance, the other end that is connected socket respectively, the other end ground connection of the second resistance, the 3rd resistance
The other end respectively with one end of the first electric capacity, one end of the 3rd electric capacity, the positive pole of the first diode, the negative pole of the 3rd diode,
4th port of amplification chip is connected, the other end ground connection of the first electric capacity, the negative pole of the first diode and bearing of the second diode
Pole is connected, the other end of the 4th resistance respectively with one end of the second electric capacity, the other end of the 3rd electric capacity, the 4th diode negative
Pole, the positive pole of the second diode, the first port of amplification chip are connected, the other end ground connection of the second electric capacity, the 3rd diode
Positive pole and the positive pole of the 4th diode be connected, the second port of amplification chip sequentially pass through after the 5th resistance and the 6th resistance with
3rd port of amplification chip is connected, the 8th port of amplification chip respectively with one end of the 4th electric capacity, one end of the 7th resistance,
One end of 8th resistance is connected, and the other end of the 4th electric capacity and the other end of the 7th resistance are connected and ground connection, amplification chip
Fifth port is connected with one end of the 5th electric capacity, one end of the 9th resistance, one end of the tenth resistance respectively, the 5th electric capacity another
One end is connected with the other end of the tenth resistance and ground connection, the 6th port of amplification chip respectively with one end of the 11st resistance, the
One end of 12 resistance is connected, the other end ground connection of the 12nd resistance, the 7th port of amplification chip and the one of the 13rd resistance
End is connected, the other end of the 13rd resistance respectively with one end of the 14th resistance, one end of the 6th electric capacity, the one of the 7th electric capacity
End is connected, the other end ground connection of the 14th resistance, the other end of the 6th electric capacity respectively with one end of the 15th resistance, the 16th
One end of resistance, one end of the 22nd resistance, the outfan of the first amplifier are connected, the other end and the tenth of the 7th electric capacity
The other end of five resistance, the negative pole of the first amplifier are connected, the other end of the 16th resistance respectively with one end of the 17th resistance,
One end of 8th electric capacity, one end of the 9th electric capacity are connected, and the other end of the 17th resistance and the positive pole of the first amplifier are connected
And ground connection, the other end of the 8th electric capacity is connected with one end, the negative pole of the second amplifier of the 18th resistance respectively, the 9th electric capacity
The other end and the other end of the 18th resistance be connected, the other end of the 22nd resistance after the 23rd resistance respectively with
One end of 24th resistance, the outfan of the second amplifier are connected, and the other end of the 24th resistance is through the 26th electricity
Ground connection after resistance, the negative pole of the 3rd amplifier respectively with one end of the 19th resistance, the positive pole of the 5th diode, the 20th resistance
One end is connected, the plus earth of the 3rd amplifier, and the other end of the 19th resistance and the positive pole of the 4th amplifier are connected, the
The outfan of three amplifiers is connected with negative pole, the positive pole of the 7th diode of the 5th diode respectively, the negative pole of the 4th amplifier
Being connected with positive pole, one end of the 21st resistance of the 6th diode respectively, the outfan of the 4th amplifier is respectively with the six or two
The negative pole of pole pipe, the positive pole of the 8th diode are connected, the negative pole of the 8th diode respectively with the other end of the 20th resistance,
The other end of 21 resistance, the negative pole of the 7th diode, one end of the 25th resistance are connected, first to fourth amplifier
Pull-up voltage end ground connection after the tenth electric capacity of the amplifier group of composition, under the amplifier group of first to fourth amplifier composition
Pull-up voltage end is ground connection after the 11st electric capacity, the other end of the 25th resistance respectively with one end of the 12nd to the 17th electric capacity
Being connected, the other end of the 12nd to the 17th electric capacity is connected with each other and ground connection.
The operation principle of detection device disclosed in the utility model is: utilizes Faraday law of electromagnetic induction, has electric current in wire,
And electric current is exchange change, the electric current of exchange change can produce electromagnetic field, use transformer collection, and electromagnetic field effect is in mutual inductance
Device, is ultimately converted to the electric current of mutual inductor coil.This electric current is directly proportional to the size of current in wire, and the faintest, is easily subject to
Interference.So needing, after a series of process, to finally give reliable and stable useful signal.
Concrete processing mode is that the low current signal of transformer, through sampling resistor, is converted to voltage signal, first passes around instrument
Use amplifier differential amplification, may amplify the signal to can the rank of precise acquisition, but simultaneously, the most useless interference signal is the most therewith
Amplify, so by signal by band filter, band filter can allow by the signal in certain frequency range, and hinders
Only other all frequency signals.In a specific embodiment, it is assumed that system signal is 50HZ, then band filter is also configured as
50HZ, stays most useful signal, filters other useless high frequency or low-frequency disturbance.Then signal is through precision rectifying, turns
It is changed to direct current signal, has single-chip microcomputer to carry out digital-to-analogue conversion, DC voltage is converted to digital signal, thus measures initial wire
Electric current.Single-chip microcomputer is according to different size of current simultaneously, makes different warning and flashing light mode.Above alarm mode can also be adopted
It is achieved with voice mode.
Technical scheme described in the utility model, it is possible to achieve function include:
1, realize line current detection, detect current range 0-1A, within precision 1A, 20mA；
2, current acquisition is reported to the police, and within 100mA, buzzer was every 2 seconds rings 100ms.Within 101-300mA, buzzer
Every 2 seconds ring two sound, every sound continued 100ma, two sound interval 200ms.Within 301mA-1000mA, buzzer is every 500ms
Ring 100ms.More than 1000mA, buzzer yowls.LED light, flashing mode is Tong Bu with buzzer.
In specific embodiment of the utility model, needs meet further, include in order to optimize the technical scheme of using effect:
1, testing circuit is integrated, volume miniaturization as far as possible.
2, when for the high-tension line of 10kV etc, it is desirable to testing circuit is carried out effective shielding measure, prevents stray electrical
Drain off and disturb and affect measurement accuracy.
3, current transformer sampling loss is the least.
4, current data uses buzzer warning sound form.
5, power supply use conventional two No. 7 batteries of joint, battery voltage detection when possessing start, if brownout, buzzer rings two soon
Sound, lamp flashes twice.Equipment continues not use for 5 minutes, automatic shut-off function.
Above in conjunction with accompanying drawing, embodiment of the present utility model is explained in detail, but this utility model is not limited to above-mentioned reality
Execute mode, in the ken that those of ordinary skill in the art are possessed, it is also possible to before without departing from this utility model objective
Put and make a variety of changes.The above, be only preferred embodiment of the present utility model, not appoint this utility model
What pro forma restriction, although this utility model is disclosed above with preferred embodiment, but is not limited to this utility model,
Any those skilled in the art, in the range of without departing from technical solutions of the utility model, when the skill of available the disclosure above
Art content is made a little change or is modified to the Equivalent embodiments of equivalent variations, as long as being without departing from technical solutions of the utility model
Holding, according to technical spirit of the present utility model, within spirit of the present utility model and principle, that is made above example appoints
What simple amendment, equivalent and improvement etc., within all still falling within the protection domain of technical solutions of the utility model.
Claims (10)
1. a removably current potential livewire work special load current detection device, it is characterised in that: include high precision current transformer,
Current sample IV modular converter, voltage differential amplification module, difference bandpass filtering modules block, single-chip microcomputer and auxiliary equipment module,
The outfan of described high precision current transformer is connected with the input of current sample IV modular converter, and current sample IV changes
The outfan of module is connected with the input of difference bandpass filtering modules block, and the outfan of difference bandpass filtering modules block accesses single-chip microcomputer,
Single-chip microcomputer is also connected with auxiliary equipment module；
Described auxiliary equipment module includes buzzer, instruction device, button and power circuit.
2. one removably current potential livewire work special load current detection device as claimed in claim 1, it is characterised in that: institute
Stating and be provided with AD sampling module in single-chip microcomputer, the DC voltage rotaring signal through over-sampling and process is changed to by described AD sampling module
Digital signal, described digital signal output to buzzer and instruction device, by the corresponding relation set, buzzer and instruction device
Make corresponding action.
3. one removably current potential livewire work special load current detection device as claimed in claim 1 or 2, it is characterised in that:
When described detection device is applied to high-tension circuit environment, increase screening arrangement in the detection position of detection device.
4. one removably current potential livewire work special load current detection device as claimed in claim 1 or 2, it is characterised in that:
The concrete model of described single-chip microcomputer is STM32L031F6P6.
5. one removably current potential livewire work special load current detection device as claimed in claim 1 or 2, it is characterised in that:
The band filter that described difference bandpass filtering modules block uses is 50HZ.
6. one removably current potential livewire work special load current detection device as claimed in claim 1 or 2, it is characterised in that:
In described voltage differential amplification module, the model of voltage stabilizing chip is TPS65135, and the model of amplification chip is AD8236.
7. one removably current potential livewire work special load current detection device as claimed in claim 2, it is characterised in that institute
The corresponding relation stating setting specifically includes:
Current acquisition is reported to the police, and within electric current 100mA, buzzer was every 2 seconds rings 100ms；
Within electric current 101-300mA, buzzer was every 2 seconds ring two sound, and every sound continues 100ma, two sound interval 200ms；
Within electric current 301mA-1000mA, buzzer is every 500ms ring 100ms；
Electric current is more than 1000mA, and buzzer yowls；
Described instruction device is LED light, and flashing mode is Tong Bu with buzzer.
8. one removably current potential livewire work special load current detection device as claimed in claim 7, it is characterised in that: institute
Stating power circuit also to include detecting device start voltage detection module, brownout after start being detected, buzzer rings two sound soon,
LED light flashes twice.
9. one removably current potential livewire work special load current detection device as claimed in claim 1 or 2, it is characterised in that:
Described detection device is additionally provided with intervalometer, it is achieved delay switching-off function.
10. one removably current potential livewire work special load current detection device as claimed in claim 6, it is characterised in that:
The physical circuit attachment structure of described voltage differential amplification module and difference bandpass filtering modules block includes the first to the 26th resistance,
First to the 17th electric capacity, the first to the 8th diode and first to fourth amplifier, wherein:
One end of described first resistance is connected with one end of the 3rd resistance, one end of being connected socket respectively, another of the first resistance
End ground connection, one end of described second resistance is connected with one end of the 4th resistance, the other end that is connected socket respectively, the second resistance
Other end ground connection, the other end of the 3rd resistance respectively with one end of the first electric capacity, one end of the 3rd electric capacity, the first diode
Positive pole, the negative pole of the 3rd diode, the 4th port of amplification chip are connected, the other end ground connection of the first electric capacity, the one or two pole
The negative pole of pipe and the negative pole of the second diode are connected, the other end of the 4th resistance respectively with one end, the 3rd electric capacity of the second electric capacity
The other end, the negative pole of the 4th diode, the positive pole of the second diode, the first port of amplification chip be connected, the second electric capacity
Other end ground connection, the positive pole of the 3rd diode and the positive pole of the 4th diode be connected, the second port warp successively of amplification chip
Being connected with the 3rd port of amplification chip after crossing the 5th resistance and the 6th resistance, the 8th port of amplification chip is electric with the 4th respectively
One end, one end of the 7th resistance, one end of the 8th resistance of holding are connected, another of the other end of the 4th electric capacity and the 7th resistance
End is connected and ground connection, the fifth port of amplification chip respectively with one end of the 5th electric capacity, one end of the 9th resistance, the tenth resistance
One end be connected, the other end of the 5th electric capacity and the other end of the tenth resistance are connected and ground connection, the 6th port of amplification chip
It is connected with one end, one end of the 12nd resistance of the 11st resistance respectively, the other end ground connection of the 12nd resistance, amplification chip
The 7th port and one end of the 13rd resistance be connected, the other end of the 13rd resistance respectively with one end of the 14th resistance,
One end of six electric capacity, one end of the 7th electric capacity are connected, the other end ground connection of the 14th resistance, and the other end of the 6th electric capacity is respectively
It is connected with one end of the 15th resistance, one end of the 16th resistance, one end of the 22nd resistance, the outfan of the first amplifier
Connecing, the other end and the other end of the 15th resistance, the negative pole of the first amplifier of the 7th electric capacity are connected, the 16th resistance another
One end is connected with one end of the 17th resistance, one end of the 8th electric capacity, one end of the 9th electric capacity respectively, the 17th resistance another
One end is connected with the positive pole of the first amplifier and ground connection, the other end of the 8th electric capacity respectively with one end of the 18th resistance, second
The negative pole of amplifier is connected, and the other end of the 9th electric capacity and the other end of the 18th resistance are connected, the 22nd resistance another
One end after the 23rd resistance respectively one end, the outfan of the second amplifier with the 24th resistance be connected, the 20th
The other end of four resistance is ground connection after the 26th resistance, the negative pole of the 3rd amplifier respectively with one end of the 19th resistance,
The positive pole of five diodes, one end of the 20th resistance are connected, the plus earth of the 3rd amplifier, the other end of the 19th resistance
Be connected with the positive pole of the 4th amplifier, the outfan of the 3rd amplifier respectively with the negative pole of the 5th diode, the 7th diode
Positive pole is connected, and the negative pole of the 4th amplifier is connected with positive pole, one end of the 21st resistance of the 6th diode respectively, the
The outfan of four amplifiers is connected with negative pole, the positive pole of the 8th diode of the 6th diode respectively, the negative pole of the 8th diode
Respectively with the other end of the 20th resistance, the other end of the 21st resistance, the negative pole of the 7th diode, the 25th resistance
One end is connected, pull-up voltage end ground connection after the tenth electric capacity of amplifier group of first to fourth amplifier composition, first to
Actuation voltage end ground connection after the 11st electric capacity of the amplifier group of the 4th amplifier composition, the other end of the 25th resistance divides
Not being connected with one end of the 12nd to the 17th electric capacity, the other end of the 12nd to the 17th electric capacity is connected with each other and ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319175.3U CN205720412U (en) | 2016-04-14 | 2016-04-14 | One removably current potential livewire work special load current detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620319175.3U CN205720412U (en) | 2016-04-14 | 2016-04-14 | One removably current potential livewire work special load current detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205720412U true CN205720412U (en) | 2016-11-23 |
Family
ID=57308779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620319175.3U Expired - Fee Related CN205720412U (en) | 2016-04-14 | 2016-04-14 | One removably current potential livewire work special load current detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205720412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738687A (en) * | 2016-04-14 | 2016-07-06 | 陈继祥 | Portable special ground-potential live-line load current detection apparatus |
-
2016
- 2016-04-14 CN CN201620319175.3U patent/CN205720412U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105738687A (en) * | 2016-04-14 | 2016-07-06 | 陈继祥 | Portable special ground-potential live-line load current detection apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105738687A (en) | Portable special ground-potential live-line load current detection apparatus | |
| CN206114790U (en) | Zinc oxide arrester on -line monitoring device | |
| CN206411185U (en) | A kind of automatic switching range high-current detector | |
| CN205910291U (en) | Long -range location detection device of low pressure overhead wire electric leakage | |
| CN105823950B (en) | One kind is super, extra-high voltage direct-current transmission converter valve light triggered thyristor level detection means | |
| CN209296853U (en) | It is a kind of for detecting the circuit of multipoint earthing of iron core of transformer failure | |
| CN207567349U (en) | Cathodic protection potential test equipment | |
| CN205720412U (en) | One removably current potential livewire work special load current detection device | |
| CN204595145U (en) | Feeder line operation troubles on-line monitoring system is pressed to record ripple collector in one | |
| CN201408227Y (en) | Portable 380V power system zero sequence current detection device | |
| CN201555891U (en) | Nine-current and four-voltage measuring device | |
| CN108802498A (en) | A kind of earth resistance tester | |
| CN202649455U (en) | Embedded accuracy tester for current transformer | |
| CN204945238U (en) | A kind of self-powered distributed wireless current sensor | |
| CN201965178U (en) | Parameter tester for pilot frequency line | |
| CN2754103Y (en) | Illegal-use-proof electric-energy meter capable of monitoring CT state | |
| CN104391225B (en) | Fault detection and communication positioning method for transmission line | |
| CN107085186A (en) | A kind of UPS battery fault detection system of STM32 | |
| CN207336615U (en) | A kind of Zinc-Oxide Arrester electrification detection system | |
| CN107677911A (en) | A kind of electric energy quality detection device with electric fire disaster warning function | |
| CN207020815U (en) | Electrical Safety intelligent sensing terminal | |
| CN202815054U (en) | Digital electronic type wireless zero-sequence mutual inductor | |
| CN109187896A (en) | A kind of module combined type multi-parameter water quality data acquisition device and its application method | |
| CN204631180U (en) | A kind of parallel thyristors leak current detection device and system | |
| CN205280864U (en) | Family's circuit breakpoint detector based on electric field principle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20161123 Termination date: 20190414 |