CN205982517U - Wireless power cable fault appearance of fixing a point - Google Patents
Wireless power cable fault appearance of fixing a point Download PDFInfo
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- CN205982517U CN205982517U CN201620954202.4U CN201620954202U CN205982517U CN 205982517 U CN205982517 U CN 205982517U CN 201620954202 U CN201620954202 U CN 201620954202U CN 205982517 U CN205982517 U CN 205982517U
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Abstract
The utility model provides a wireless power cable fault appearance of fixing a point, belongs to power cable fault and surveys the field. Its characterized in that: including sound magnetic detection portion (3) and with the wireless connection's of sound magnetic detection portion (3) signal reception unit, be fixed with handheld portion at the top of sound magnetic detection portion (3), be provided with probe (4) in the bottom of sound magnetic detection portion (3), probe (4) link to each other with the unit of testing vibration (10) that set up in sound magnetic detection portion (3) inside, be provided with main circuit board (8) simultaneously in the inside of sound magnetic detection portion (3), the control circuit who tests vibration on signal and main circuit board (8) of unit (10) output links to each other. In this wireless power cable fault appearance of fixing a point, realized surveying simultaneously cable fault's sound sound signal and magnetism sensing signal through setting up magnetic detection portion, and realized wireless connection between sound magnetic detection portion and the signal reception unit.
Description
Technical field
A kind of wireless power type cable failure positioning instrument, belongs to power cable fault field of detecting.
Background technology
Power cable is electrical power system transmission and the critical elements of distribution electric energy, in Urban Underground electrical network, industrial and mining establishment
It is widely used in inside power supply circuit and excessively river, excessively the submarine transmission circuit in sea.Cable once breaks down, and can give enterprise
Production causes loss of outage, makes troubles to resident living, needs to find fault as early as possible carry out after therefore cable breaks down
Repair.
Search cable fault to generally require through fault diagnosis, fault localization and three steps of position determination of fault.Fault diagnosis
It is to check the insulation resistance value of the connectedness of each phase of cable, fault phase it is therefore an objective to distinguish fault with the instruments such as circuit tester and equipment
Matter, is that subsequent step selects suitable method of testing；Fault localization is to measure cable between trouble point and test point with instrument
Length, it is therefore an objective to substantially determine the region that cable fault is located, reduces the scope of trouble shoot；Position determination of fault is to be detected with instrument
The intensity of fault-signal or the time of advent are it is therefore an objective to moving closer to and finally confirming location of fault.
At present, type cable failure positioning instrument mainly has two types：
1st, sound magnetic method type cable failure positioning instrument.Instrument includes sound magnetic probe, main frame and intercepts three critical pieces of earphone.Instrument
Method of Cable Trouble Point discharging sound is received using the sound magnetic probe being placed in ground, acoustical signal passes through cable by transmission of popping one's head in during device work
To main frame, after filtering, amplify etc. and to process, then pass through cable by main frame and deliver to the acoustical signal after processing to intercept earphone, confession
Tester intercepts, analyzes and judges.
2nd, sound magnetic-synchro method type cable failure positioning instrument.Instrument includes sound magnetic-synchro and detects probe, main frame and intercept earphone three
Individual critical piece.Detect probe synchronous reception Method of Cable Trouble Point electric discharge using the sound magnetic-synchro being placed in ground during instrument work to produce
Acoustical signal and electromagnetic field signal, sound and electromagnetic field signal be delivered to main frame by popping one's head in by cable, and main frame is believed to two kinds
Number it is filtered, amplifies etc. processing, then calculating the difference between sound and field signal due in.Main frame one side by when
Between the information such as difference, sound and field waveform show on main frame screen, on the other hand acoustical signal is delivered to by cable and detects
Listen earphone.The sound that tester's synthesis information of showing of main frame and earphone listen to is analyzed to cable fault position and sentences
Disconnected.
Current type cable failure positioning instrument comes with some shortcomings：
1st, in type cable failure positioning, tester needs to carry main frame on the body, and the placement location moving repeatedly probe is surveyed
Examination.Due to all being connected by cable between above two type cable failure positioning instrument probe and main frame, therefore when needs will be popped one's head in far
From tester place when (such as probe be placed in tunnel, tester be located at ground, or probe the personnel of being placed in be difficult reach position
Put), and during frequent mobile probe, type cable failure positioning instrument uses has inconvenience.
2nd, exist in popping one's head in and detect the Weak Signal Processing circuit such as sensor and the preamplifier of cable discharge sound, this
A little circuit are very sensitive for noise, and the connecting line popped one's head in and main frame between easily introduces circuit noise and outside noise, because
This current type cable failure positioning instrument often has that when intercepting signal to noise ratio is not high.When cable laying is relatively deep or electric discharge
When weaker, tester even is difficult to not hear fault discharge sound, and this makes the function of type cable failure positioning instrument be difficult to give full play to.
3rd, type cable failure positioning instrument lacks data storage and network savvy, field test data and information cannot back up and
Teletransmission, is unfavorable for analysis expert and provides remote testing to instruct.
Content of the invention
The technical problems to be solved in the utility model is：Overcome the deficiencies in the prior art, provide a kind of easy to carry, pass through
Setting sound magnetic detection portion achieves and failure cable acoustical signal and magnetic strength induction signal is detected simultaneously, and achieves sound magnetic spy
The wireless power type cable failure positioning instrument being wirelessly connected between survey portion and signal receiving part.
This utility model solves its technical problem and be employed technical scheme comprise that：This wireless power type cable failure positioning instrument,
It is characterized in that：The signal receiving part be wirelessly connected including sound magnetic detection portion and with sound magnetic detection portion, in sound magnetic detection portion
Top is fixed with Handheld Division, and the bottom in sound magnetic detection portion is provided with probe, probe and the survey being arranged within sound magnetic detection portion
The unit that shakes is connected, and is provided with main circuit board in the inside in sound magnetic detection portion, on the outfan of vibration measuring unit and main circuit board simultaneously
Control circuit be connected.
Preferably, described sound magnetic detection portion includes base, and described vibration measuring unit is arranged on the middle part of base and the bottom of from
The bottom of seat passes, and described probe is arranged on the bottom of vibration measuring unit, and described main circuit board is set in the outer of vibration measuring unit
Portion, is fixed with battery by battery case above vibration measuring unit, and battery provides working power for the control circuit on main circuit；
It is covered with acoustic shielding cover above base, described Handheld Division is arranged on the installation in the hole at acoustic shielding cover top.
Preferably, described vibration measuring unit includes the cylindrical shape shielding case of metal material, is provided with the bottom of radome
Prevent the back-up ring dropping out from base bottom, in the bottom of radome, probe installed part is installed, probe is arranged on probe installed part
Bottom；
It is provided with piezoelectric acceleration transducer in the inner chamber of shielding case, the top of shielding case is provided with secondary circuit
Plate, piezoelectric acceleration transducer passes through secondary circuit board, and from the top of shielding case, extraction is connected with the control circuit main circuit.
Preferably, it is provided with lid on vibration measuring unit at the opening at described shielding case top, during vibration measuring unit covers
It is provided with fairlead, the lead of secondary circuit board is connected with the control circuit on main circuit board after drawing from fairlead.
Preferably, it is provided with top flexible link between described vibration measuring unit and described battery case, described
It is provided with bottom flexible link between vibration measuring unit and described base.
Preferably, described control circuit includes microprocessor, the magnetic signal processing unit that is bi-directionally connected with microprocessor,
Acoustic signal processing unit, is connected with for realizing wirelessly being connected with reception signal terminal on the input/output port of microprocessor
Bluetooth module.
Preferably, in described magnetic signal processing unit, the outfan of magnetic signal sensing unit and magnetic gain-adjusted list
The input of unit is connected, and magnetic gain adjustment unit outfan is filtered with vertical signal bandpass filtering unit and horizontal signal band logical simultaneously
The input of ripple unit is connected, and the outfan of vertical signal bandpass filtering unit is connected with the input of voltage comparator, level
The outfan of signal bandpass filtering unit is connected with the input of microprocessor, the outfan of voltage comparator and microprocessor
Input is connected；The outfan of microprocessor is connected with the control signal input of magnetic gain adjustment unit simultaneously.
Preferably, in described acoustic signal processing unit, the outfan of acoustical signal sensing unit and pre-amplifier unit
Input be connected, the outfan of pre-amplifier unit is connected with the input of acoustic gain adjustment unit, acoustic gain adjustment unit
Outfan is connected with the input of sound signal band pass filtering unit, the outfan of sound signal band pass filtering unit and microprocessor
The input of device is connected；The outfan of microprocessor and capacitive sensing are adjusted with acoustic gain close to the outfan of control unit simultaneously
Two control signal inputs of section unit are connected, and capacitive sensing is connected to Handheld Division close to the input of control unit.
Preferably, described magnetic signal sensing unit includes being horizontally disposed with and vertically disposed two magnetic core coils.
Compared with prior art, this utility model is had an advantageous effect in that：
1st, in this wireless power type cable failure positioning instrument, the sound to cable fault is achieved by setting sound magnetic detection portion
Message number and magnetic strength induction signal are detected simultaneously, and achieve and be wirelessly connected between sound magnetic detection portion and signal receiving part.
2nd, pass through to arrange top flexible link and bottom flexible link it is achieved that vibration measuring unit and acoustic shielding cover and base
Between soft rubber connect, it is to avoid vibration measuring unit contacts firmly between base and battery case, due to soft rubber vibration is had very strong
Damping and attenuation, effectively prevent from, when carrying out sound-detection, more than ground vibrating the impact to vibration measuring unit.
3rd, pass through the outside setting acoustic shielding cover in vibration measuring unit, therefore acoustic shielding cover can reduce environmental noise to cable
The impact of fault-finding.
4th, because the output signal of piezoelectric acceleration transducer is very faint, easily it is subject to noise jamming, therefore wireless at this
In Power Cable Fault Locator, shielding case adopts metal material, and by piezoelectric acceleration transducer and is provided with preposition electricity
The secondary circuit board of lotus amplifying circuit is arranged in shielding case, to reduce the impact that external environment is disturbed to small-signal.
5th, probe employs two kinds of different probes of length, to adapt to the needs of fault-finding in different ground surface environments, two
Plant probe and can be arranged on the use of probe bottom, long probe is adapted to soft or uneven ground surface environment, and short probe can
To adapt to hard or smooth ground surface environment.
6th, in the magnetic signal sensing unit of magnetic signal processing unit, detected as sensing element using two magnetic core coils
The electromagnetic field signal that cable discharge produces.Magnetic core coil compares air higher pcrmeability, and detecting inside during field signal has
Higher magnetic flux density, therefore under the conditions of sensitivity identical, the volume of the ratio air core coil that magnetic core coil can do is less,
It is more convenient for integrated installation.
7th, when tester holds or after handle, capacitive sensing is defeated to acoustic gain adjustment unit close to control unit
Go out signal, the Signal Regulation that pre-amplifier unit is exported by acoustic gain adjustment unit to zero, when capacitive sensing is close to control unit
After sensing the handle that staff leaves probe, acoustic gain is returned to original level.Therefore connect by arranging capacitive sensing
Nearly control unit, can protect the damage that tester causes to human ear audition from the forte producing because of lifting mobile probe.
Brief description
Fig. 1 is wireless power type cable failure positioning instrument structural representation.
Fig. 2 is wireless power type cable failure positioning instrument sound magnetic detection portion structural representation.
Fig. 3 is wireless power type cable failure positioning instrument sound magnetic detection portion's acoustic shielding cover structure schematic diagram.
Fig. 4 is wireless power type cable failure positioning instrument sound magnetic detection portion understructure schematic diagram.
Fig. 5 is wireless power type cable failure positioning instrument sound magnetic detection portion's vibration measuring cellular construction schematic diagram.
Fig. 6 is wireless power type cable failure positioning instrument sound magnetic detection portion probe structure schematic diagram.
Fig. 7 is wireless power type cable failure positioning instrument control circuit functional-block diagram.
Fig. 8 is wireless power type cable failure positioning instrument magnetic signal principle of induction schematic diagram.
Wherein：1st, handle 2, shadoof 3, sound magnetic detection portion 4, probe 5, connecting rod 6, battery 7, acoustic shielding cover 8,
Main circuit board 9, top flexible link 10, vibration measuring unit 11, bottom flexible link 12, probe installed part 13, base 14,
Installing hole 15, cover body 16, locating slot 17, positioning convex 18, mounting cylinder 19, base loading end 20, secondary circuit board 21,
Lid 23, shielding case 24, piezoelectric acceleration transducer 25, plug 26, perpendicular magnetic heart yearn on fairlead 22, vibration measuring unit
Circle 27, horizontal magnetic core coil 28, ground 29, cable 30, the magnetic line of force.
Specific embodiment
Fig. 1 ~ 8 are most preferred embodiments of the present utility model, and 1 ~ 8 pair of this utility model does furtherly below in conjunction with the accompanying drawings
Bright.
As shown in figure 1, a kind of wireless power type cable failure positioning instrument, sound magnetic detection portion 3 and passing through with sound magnetic detection portion 3
What wireless mode was connected intercepts earphone and handheld terminal.It is provided with for entering to sound magnetic signal in the bottom in sound magnetic detection portion 3
The probe 4 that row detects.It is connected with shadoof 2 above sound magnetic detection portion 3, shadoof 2 is length-adjustable stretching structure, in shadoof
2 top is provided with handle 1.Operator pass through hand-held handle 1, and the sound magnetic detection portion 3 being connected by shadoof 2 is to failure cable
The sound magnetic signal at place is acquired.
Pass through wireless connection, sound magnetic detection portion 3 detects to handheld terminal transmission between sound magnetic detection portion 3 and handheld terminal
Sound and electromagnetic field signal, handheld terminal order to sound magnetic detection portion 3 transmission signal filtering frequency band setting, Gain tuning etc. and
Parameter.Handheld terminal and intercept to pass through between earphone wirelessly to connect and be used for intercepting the acoustical signal that earphone one-way transmission receives
Intercept.Handheld terminal passes through operational monitoring software, sound and electromagnetic field signal waveform, sound that display sound magnetic detection portion 3 detects
Information and the ginsengs such as the difference between sound and field signal due in, the filtered band scope in sound magnetic detection portion 3, gain size
Number, grasps and controls the working condition of fixed point apparatus for tester.
As shown in Fig. 2 sound magnetic detection portion 3 includes the acoustic shielding cover 7 of taper, in the bottom of acoustic shielding cover 7, base is installed
13.The top of acoustic shielding cover 7 is provided with installing hole 14, the connecting rod 5 of shadoof 2 bottom realizes shadoof 2 with installing hole 14 cooperation
Connection and acoustic shielding cover 7 between.Vibration measuring unit 10 and main circuit board 8 are fixed with by base 13, vibration measuring unit 10 is fixed on
The middle part of base 13, main circuit board 8 is circular, is fixed on the outside of vibration measuring unit 10, is provided with this nothing on main circuit board 8
The control circuit of line Power Cable Fault Locator.The top of vibration measuring unit 10 is provided with battery case, installs in battery case
There is battery 6, in this wireless power type cable failure positioning instrument, battery 6 adopts rechargeable battery, battery 6 is used for the main electricity of inclusion
Control circuit on road plate 8 is powered in interior sound magnetic detection portion 3.Vibration measuring unit 10 passes from the bottom of base 13, is surveying
The part that the unit 10 that shakes passes from base 13 is provided with probe installed part 12, and the bottom of probe installed part 12 is provided with detection
Pawl, is evenly arranged with multiple branches in probe claws, and probe 4 is arranged on below probe claws.On the more hard road surface of quality
When being detected, probe 4 can be taken off, carry out sound magnetic detection using probe claws；The more loose road surface of quality is visited
During survey, probe 4 can be arranged on the lower section of probe claws, and probe 4 is inserted inside ground, carry out sound magnetic detection.
It is provided with top flexible link 9 above vibration measuring unit 10, top flexible link 9 is circular, its annular inner race
It is fixedly connected with vibration measuring unit, its annular outer ring is fixedly connected for the cylinder placing vibration measuring unit 10 with base 13 top, because
This passes through top flexible link 9 it is achieved that vibration measuring unit 10 can carry out the shifting of certain amplitude on the vertical direction of base 13
Dynamic.It is provided with bottom flexible link 11, top flexible link 9 and bottom flexible link between vibration measuring unit 10 and base 13
11 are all realized using soft rubber, by arranging top flexible link 9 and bottom flexible link 11, it is to avoid vibration measuring unit 10 and base
Firmly contact between 13 and battery case, effectively prevent when carrying out sound-detection, the impact to vibration measuring unit 10 for the external vibration.
As shown in figure 3, acoustic shielding cover 7 includes the cover body 15 of cone, installing hole 14 is opened in the top of cover body 15,
The bottom of cover body 15 medial surface is by arranging two circle cut-off interval formation two circle locating slots 16.Generally, when vibration measuring unit
10 when placing on the ground, the outer rigid housing of vibration measuring unit 10 except can detect the ground vibration producing because of fault discharge with
Outward, the environmental noise on more than ground, such as sound of the wind, traffic noise etc. also can inevitably be detected.By in vibration measuring unit
10 outside setting acoustic shielding cover 7, and will be connected by soft rubber again between acoustic shielding cover 7 and vibration measuring unit 10, soft rubber pair
Vibration has very strong damping and attenuation, and therefore acoustic shielding cover can reduce the impact to detection of cable fault for the environmental noise.
As shown in figure 4, in above-mentioned base 13, including base loading end 19, being formed at the middle part of base loading end 19
Cylindrical mounting cylinder 18, above-mentioned vibration measuring unit 10 is arranged in mounting cylinder 18, and main circuit board 8 is sleeved on the outer of mounting cylinder 18
Circle.The outer ring of base loading end 19 is provided with two circle positioning convex 17, the locating slot 16 of positioning convex 17 and acoustic shielding cover 7 is joined
Close.After acoustic shielding cover 7 is installed with base 13, in positioning convex 17 insertion locating slot 16, realize acoustic shielding cover 7 and base 13
Location and installation.
As shown in figure 5, vibration measuring unit 10 includes columnar shielding case 23, the bottom of shielding case 23 is provided with back-up ring,
After vibration measuring unit 10 being put into the mounting cylinder 18 of base 13, by be arranged on the back-up ring mode vibration measuring unit 10 of its bottom with
Drop out in base 13.In the bottom of shielding case 23, probe installed part 12 is installed, the bottom of probe installed part 12 is provided with spy
Measuring jaw, is evenly arranged with multiple branches in probe claws, and probe 4 is arranged on below probe claws.
It is provided with piezoelectric acceleration transducer 24 in the inner chamber of shielding case 23, the top of shielding case 23 is provided with pair
Circuit board 20, is arranged on the pre-amplification circuit on secondary circuit board 20 and piezoelectric acceleration transducer 24, piezoelectric type acceleration
Sensor 24 detects ground vibration as the sensing element in sound magnetic detection portion 3, catches the discharging sound of cable fault.Piezoelectric type accelerates
Degree sensor 24 is output as the quantity of electric charge, and the charge signal of piezoelectric acceleration transducer 24 output is sent on secondary circuit board 20
In pre-amplification circuit, amplify the output signal of piezoelectric acceleration transducer 24 by pre-amplification circuit, simultaneously electric charge
Amount is converted into voltage, in order to the signal processing of subsequent conditioning circuit.Because the output signal of piezoelectric acceleration transducer 24 is non-
Often faint, easily it is subject to noise jamming, therefore in this wireless power type cable failure positioning instrument, shielding case 23 adopts metal material, and
Piezoelectric acceleration transducer 24 is arranged in shielding case 23 with the secondary circuit board 20 being provided with preposition charge amplifying circuit, with
Reduce the impact that external environment is disturbed to small-signal.It is provided with the opening at shielding case 23 top on vibration measuring unit and cover 22,
Secondary circuit board 20 is fixed on lid 22 on vibration measuring unit.On vibration measuring unit, lid 22 is circular, wherein offers fairlead 21, secondary
The lead of circuit board 20 is connected with the control circuit on main circuit board 8 after drawing from fairlead 21.
As shown in fig. 6, probe 4 employs two kinds of different probes of length, to adapt to fault-finding in different ground surface environments
Needs, two kinds of probes can be arranged on probe bottom and use, and long probe is adapted to soft or uneven ground surface environment,
Short probe is adapted to hard or smooth ground surface environment.When using, the plug 25 at probe 4 top is loaded probe and installs
In part 12, complete the installation of probe 4.
As shown in fig. 7, the control circuit of wireless power type cable failure positioning instrument includes magnetic signal processing unit, at acoustical signal
Reason unit and microprocessor.Wherein magnetic signal processing unit includes magnetic signal sensing unit, magnetic gain adjustment unit, vertical letter
Number bandpass filtering unit, horizontal signal bandpass filtering unit and voltage comparator.Acoustic signal processing unit includes acoustical signal sense
Answer unit, pre-amplifier unit, acoustic gain adjustment unit, sound signal band pass filtering unit and capacitive sensing single close to controlling
Unit.
In magnetic signal processing unit, the input phase of the outfan of magnetic signal sensing unit and magnetic gain adjustment unit
Even, the magnetic gain adjustment unit outfan input with vertical signal bandpass filtering unit and horizontal signal bandpass filtering unit simultaneously
End is connected, and the outfan of vertical signal bandpass filtering unit is connected with the input of voltage comparator, horizontal signal band logical
The outfan of filter unit is connected with the input of microprocessor, the input phase of the outfan of voltage comparator and microprocessor
Even.The outfan of microprocessor is connected with the control signal input of magnetic gain adjustment unit simultaneously.
In the magnetic signal sensing unit of magnetic signal processing unit, detect electricity using two magnetic core coils as sensing element
The electromagnetic field signal that cable electric discharge produces.Magnetic core coil compares air higher pcrmeability, and detecting inside during field signal has more
High magnetic flux density, therefore under the conditions of sensitivity identical, the volume of the ratio air core coil that magnetic core coil can do is less, more
It is easy to integrated installation.In this magnetic signal sensing unit, it is provided with two magnetic core coils, in two magnetic core coils, a level sets
Put, another is vertically arranged, by arranging modes of emplacement mutually in 90 °, the position of cable can be gone out with direct detection, it is specifically former
Reason is as follows：
As shown in figure 8, cable 29 is embedded under ground 28, in cable 29, there is electric current to flow through, therefore can induce the magnetic line of force
30.When horizontal magnetic core coil 27 and vertical magnetic induction loop 26 carry out magnetic signal detection on the ground, the magnetic line of force 30 passes through level
Magnetic core coil 27 and vertical magnetic induction loop 26 simultaneously form corresponding magnetic induction waveform, as shown in figure 8, horizontal magnetic core coil 27 is from left
When moving right, the cable fault electric discharge field waveform polarity of horizontal magnetic core coil 27 sensing is constant, and vertical magnetic induction loop 26 is certainly
When left-hand moves right, coil-induced cable fault electric discharge field waveform polarity upset, phase 180 degree.By detecting two
The polarity of individual coil-induced field waveform whether identical it can be determined that going out magnetic core coil to be located at the left side of cable or the right.
Magnetic gain adjustment unit output signal by magnetic gain adjustment unit send into vertical signal bandpass filtering unit and
In horizontal signal bandpass filtering unit, by vertical signal bandpass filtering unit and horizontal signal bandpass filtering unit respectively by level
The signal that magnetic core coil 27 and vertical magnetic induction loop 26 collect is extracted respectively, and wherein horizontal signal bandpass filtering unit carries
The signal taking out is sent directly in microprocessor.The signal that vertical signal bandpass filtering unit extracts sends into voltage comparator
Interior, and be compared with a standard signal in voltage comparator, for detecting the intensity of electromagnetic field signal, provide cable event
Barrier electric discharge instruction.This function is used for starting microprocessor synchronous acquisition sound and field signal, then passes through to calculate cable event
Difference between barrier electric discharge sound and field signal due in, estimates the distance of trouble point.Can also be by voltage comparator
It is connected between horizontal signal bandpass filtering unit and microprocessor.
Magnetic gain adjustment unit is realized by commercially available common digital regulation resistance chip, for adjusting magnetic letter by microprocessor
The intensity of the signal of number sensing unit output.Vertical signal bandpass filtering unit and horizontal signal bandpass filtering unit can lead to respectively
Cross the band pass filter circuit of routine or band filter chip is realized.
In acoustic signal processing unit, the outfan of acoustical signal sensing unit is connected with the input of pre-amplifier unit,
The outfan of pre-amplifier unit is connected with the input of acoustic gain adjustment unit, and acoustic gain adjustment unit outfan is believed with sound
The input of number bandpass filtering unit is connected, the input phase of the outfan of sound signal band pass filtering unit and microprocessor
Even.The outfan of microprocessor and capacitive sensing are close to outfan two with acoustic gain adjustment unit simultaneously of control unit
Control signal input is connected.Acoustical signal sensing unit is above-mentioned piezoelectric acceleration transducer 24, and pre-amplifier unit is
The above-mentioned pre-amplification circuit being arranged on secondary circuit board 20.
The signal of acoustical signal sensing unit output is sent into through acoustic gain adjustment unit after pre-amplifier unit amplification
In sound signal band pass filtering unit, send in microprocessor after being processed by sound signal band pass filtering unit.Acoustic gain is adjusted
Unit is realized by commercially available common digital regulation resistance chip, for adjusting the letter of acoustical signal sensing unit output by microprocessor
Number intensity.Capacitive sensing is realized by electrical capacitance proximity sensor close to control unit, and its input is connected to handle by shadoof 2
On 1, handle 1 adopts metal material.When tester holds or after handle 1, capacitive sensing is close to control unit to sound
Gain adjustment unit output signal, the Signal Regulation that pre-amplifier unit is exported by acoustic gain adjustment unit to zero, when electric capacity sense
Should sense after the handle 1 that staff leaves probe close to control unit, acoustic gain is returned to original level.Therefore pass through
Setting capacitive sensing, close to control unit, can protect tester from because the forte that lifting mobile probe produces is listened to human ear
The damage that power causes.Capacitive sensing can pass through conventional capacitive sensing close to circuit or capacitive sensing close to core close to control unit
Piece is realized.
It is also associated with bluetooth module on the microprocessor, realized and wirelessly the connecting of handheld terminal and earphone by bluetooth module
Connect.Handheld terminal can be realized by various ways, such as panel computer or smart mobile phone.Realize bluetooth by arranging bluetooth module no
Line communication function.Bluetooth wireless communication bi-directional transfer of data between probe and main frame, on the one hand pops one's head in digitized sound
It is sent to handheld terminal with field signal to be used for processing and show, Gain tuning, wave filter are arranged by another aspect tablet device
It is sent to probe realization control Deng order and parameter.
The above, be only preferred embodiment of the present utility model, is not to make other forms to this utility model
Restriction, any those skilled in the art are changed or are modified as being equal to possibly also with the technology contents of the disclosure above
The Equivalent embodiments of change.But all without departing from technical solutions of the utility model content, according to technical spirit of the present utility model
Any simple modification, equivalent variations and the remodeling that above example is made, still falls within the protection of technical solutions of the utility model
Scope.
Claims (9)
1. a kind of wireless power type cable failure positioning instrument it is characterised in that：Including sound magnetic detection portion（3）And with sound magnetic detection portion
（3）The wireless signal receiving part connecting, in sound magnetic detection portion（3）Top be fixed with Handheld Division, in sound magnetic detection portion（3）Bottom
Portion is provided with probe（4）, probe（4）Be arranged on sound magnetic detection portion（3）Internal vibration measuring unit（10）It is connected, in sound magnetic detection
Portion（3）Inside be provided with main circuit board simultaneously（8）, vibration measuring unit（10）Outfan and main circuit board（8）On control electricity
Road is connected.
2. wireless power type cable failure positioning instrument according to claim 1 it is characterised in that：Described sound magnetic detection portion
（3）Including base（13）, described vibration measuring unit（10）It is arranged on base（13）Middle part and from base（13）Bottom pass,
Described probe（4）It is arranged on vibration measuring unit（10）Bottom, described main circuit board（8）It is set in vibration measuring unit（10）Outer
Portion, in vibration measuring unit（10）Top battery is fixed with by battery case（6）, battery（6）For main circuit board（8）On control electricity
Road provides working power；In base（13）Top be covered with acoustic shielding cover（7）, described Handheld Division is arranged on acoustic shielding cover
（7）The installing hole at top（14）Interior.
3. wireless power type cable failure positioning instrument according to claim 2 it is characterised in that：Described vibration measuring unit（10）
Cylindrical shape shielding case including metal material（23）, in shielding case（23）Bottom be provided with and prevent from base（13）Bottom drops out
Back-up ring, in shielding case（23）Bottom probe installed part is installed（12）, probe（4）It is arranged on probe installed part（12）Bottom
Portion；
In shielding case（23）Inner chamber in be provided with piezoelectric acceleration transducer（24）, in shielding case（23）Top be provided with
Secondary circuit board（20）, piezoelectric acceleration transducer（24）By secondary circuit board（20）From shielding case（23）Top draw with main
Circuit board（8）On control circuit be connected.
4. wireless power type cable failure positioning instrument according to claim 3 it is characterised in that：In described shielding case（23）
It is provided with lid on vibration measuring unit at the opening at top（22）, vibration measuring unit covers（22）In be provided with fairlead（21）, secondary electricity
Road plate（20）Lead from fairlead（21）With main circuit board after middle extraction（8）On control circuit be connected.
5. wireless power type cable failure positioning instrument according to claim 2 it is characterised in that：In described vibration measuring unit
（10）It is provided with top flexible link and described battery case between（9）, in described vibration measuring unit（10）With described base
（13）Between be provided with bottom flexible link（11）.
6. the wireless power type cable failure positioning instrument according to any one of claim 1 ~ 4 it is characterised in that：Described control
Circuit includes microprocessor, and the magnetic signal processing unit that is bi-directionally connected with microprocessor, acoustic signal processing unit, in microprocessor
Input/output port on be connected with for realizing, with reception signal terminal, the bluetooth module that is wirelessly connected.
7. wireless power type cable failure positioning instrument according to claim 6 it is characterised in that：Process in described magnetic signal
In unit, the outfan of magnetic signal sensing unit is connected with the input of magnetic gain adjustment unit, and magnetic gain adjustment unit exports
End is connected with the input of vertical signal bandpass filtering unit and horizontal signal bandpass filtering unit simultaneously, and vertical signal band logical is filtered
The outfan of ripple unit is connected with the input of voltage comparator, the outfan of horizontal signal bandpass filtering unit and microprocessor
Input be connected, the outfan of voltage comparator is connected with the input of microprocessor；The outfan of microprocessor simultaneously with
The control signal input of magnetic gain adjustment unit is connected.
8. wireless power type cable failure positioning instrument according to claim 6 it is characterised in that：In described Underwater Acoustic channels
In unit, the outfan of acoustical signal sensing unit is connected with the input of pre-amplifier unit, the outfan of pre-amplifier unit
It is connected with the input of acoustic gain adjustment unit, the input of acoustic gain adjustment unit outfan and sound signal band pass filtering unit
End is connected, and the outfan of sound signal band pass filtering unit is connected with the input of microprocessor；The outfan of microprocessor with
And capacitive sensing is connected with two control signal inputs of acoustic gain adjustment unit close to the outfan of control unit simultaneously, electricity
The input holding sensing close to control unit is connected to Handheld Division.
9. wireless power type cable failure positioning instrument according to claim 7 it is characterised in that：Described magnetic signal sensing is single
Unit includes being horizontally disposed with and vertically disposed two magnetic core coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954202.4U CN205982517U (en) | 2016-08-26 | 2016-08-26 | Wireless power cable fault appearance of fixing a point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954202.4U CN205982517U (en) | 2016-08-26 | 2016-08-26 | Wireless power cable fault appearance of fixing a point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205982517U true CN205982517U (en) | 2017-02-22 |
Family
ID=58035781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620954202.4U Active CN205982517U (en) | 2016-08-26 | 2016-08-26 | Wireless power cable fault appearance of fixing a point |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036706A (en) * | 2017-05-27 | 2017-08-11 | 中国石油大学(华东) | One kind set tube vibration well head Monitor detection equipment |
| CN107870288A (en) * | 2017-12-27 | 2018-04-03 | 武汉朗开智能科技有限公司 | A kind of cable fault positioner |
| CN108362979A (en) * | 2018-04-26 | 2018-08-03 | 广东电网有限责任公司 | Cable fault positioning device and cable detection system |
| CN108710061A (en) * | 2018-05-14 | 2018-10-26 | 西安锐驰电器有限公司 | A kind of new-type type cable failure positioning instrument |
| CN109655714A (en) * | 2019-01-22 | 2019-04-19 | 西安电子科技大学 | Dual sensor type cable failure positioning detection system and method, Cable test platform |
| CN113484677A (en) * | 2021-07-06 | 2021-10-08 | 江苏科技大学 | Automatic diagnosis device for troubleshooting of power electronic circuit |
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2016
- 2016-08-26 CN CN201620954202.4U patent/CN205982517U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036706A (en) * | 2017-05-27 | 2017-08-11 | 中国石油大学(华东) | One kind set tube vibration well head Monitor detection equipment |
| CN107036706B (en) * | 2017-05-27 | 2019-04-30 | 中国石油大学(华东) | A kind of set tube vibration well head Monitor detection equipment |
| CN107870288A (en) * | 2017-12-27 | 2018-04-03 | 武汉朗开智能科技有限公司 | A kind of cable fault positioner |
| CN108362979A (en) * | 2018-04-26 | 2018-08-03 | 广东电网有限责任公司 | Cable fault positioning device and cable detection system |
| CN108710061A (en) * | 2018-05-14 | 2018-10-26 | 西安锐驰电器有限公司 | A kind of new-type type cable failure positioning instrument |
| CN109655714A (en) * | 2019-01-22 | 2019-04-19 | 西安电子科技大学 | Dual sensor type cable failure positioning detection system and method, Cable test platform |
| CN113484677A (en) * | 2021-07-06 | 2021-10-08 | 江苏科技大学 | Automatic diagnosis device for troubleshooting of power electronic circuit |
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