CN109060111A - A kind of multi-channel type substation noise synthesis cloud atlas test device - Google Patents
A kind of multi-channel type substation noise synthesis cloud atlas test device Download PDFInfo
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- CN109060111A CN109060111A CN201810679980.0A CN201810679980A CN109060111A CN 109060111 A CN109060111 A CN 109060111A CN 201810679980 A CN201810679980 A CN 201810679980A CN 109060111 A CN109060111 A CN 109060111A
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- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
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Abstract
The invention discloses a kind of multi-channel type substation noise synthesis cloud atlas test devices, comprising: fixed disk is mounted on movable pedestal by pitching regulating device, and track is provided in fixed disk, and floating disc is equipped on track, is provided with camera in fixed disk；Each array arm is hinged in fixed disk, and each array arm passes through a connecting rod and connect with floating disc, and the both ends of connecting rod are hinged with array arm and floating disc respectively；It is provided with several sonic transducers on each array arm, the signal output end of camera and each sonic transducer is all connected with the signal receiving end of data acquisition processing device；Data acquisition processing device includes: sensor board, FPGA, power supply and host computer；Power supply is connected with FPGA, and FPGA is connected with host computer.The present invention passes through the region to be measured for just going through whole transformer station, the noise positioning of whole transformer station can be completed, by that can obtain the noise synthesis cloud atlas of whole substation for the noise testing image mosaic of each measuring point.
Description
Technical field
The invention belongs to substation's noise testing technical field, in particular to a kind of multi-channel type substation noise synthesis cloud
Figure test device.
Background technique
Substation's internal noise being precisely separating and measuring, and is the key that carry out substation noise control and prevention and treatment.
But the measurement of substation's noise is influenced by outside environmental elements, the influence of have powerful connections among these noise and weather.In reality
When border measures, other than having noise caused by tested sound source, the presence of other noises is also had, such as the people around substation
The influence of noise of the life and works background such as stream, wagon flow, and bark, the transient noises such as motorcycle sound, the sum of these noises are known as
Ambient noise, ambient noise influence whether the accuracy of measurement.The noise for usually measuring certain machine measures back when machine is not opened
Scape noise, measures overall noise when machining, be then modified the noise for obtaining machine.And the substation to put into operation cannot be careless
It is out of service because its ambient noise is measured, using single sound level meter measurement noise, be substation's self-noise and
The superposition of other ambient noises.Utilize single sound level meter, it is difficult to distinguish the source of substation's internal noise, distribution, size,
The parameters such as spectrum signature, the responsibility for being unfavorable for substation equipment noise are distinguished, are made troubles to the improvement of substation noise.
Existing volume array test device can only measure the image of single measuring point, usually utilize the noise testing of volume configuration
Device measures the acoustic image distribution map of some measuring point, and the sound-filed simulation figure Input Software of acquisition is then carried out analog simulation, obtains
The comprehensive cloud atlas of the noise simulation of substation, the synthesis cloud atlas accuracy simulated by software is poor, be limited to measuring point quantity and
Distribution situation cannot accurately react the distribution situation of noise source in substation, be not able to satisfy substation noise rectification and
The needs of environmental judgment need a kind of device that can directly measure substation's noise synthesis cloud atlas.In addition, existing volume array
Test device needs to carry out the detection compared with multi-measuring point, has a large amount of data to need to handle and transmit, folded due to needing to carry out image
Add, have higher requirements to the reliability of data transmission, the data acquisition of existing volume array test device is most with transmitting device
Using general data collecting instrument, common problem is: expensive to cause testing cost higher；Traditional number adopts instrument
Redundancy feature is more, and idle work also will affect the use that number adopts instrument complete machine after capable of damaging, and the reliability for causing data to be transmitted is poor.
Summary of the invention
It is above-mentioned to solve the purpose of the present invention is to provide a kind of multi-channel type substation noise synthesis cloud atlas test device
?.Test device of the invention passes through the region to be measured for just going through whole transformer station, can complete entire power transformation
The noise positioning stood, by the way that the noise synthesis cloud of whole substation can be obtained by the noise testing image mosaic of each measuring point
Figure；Cost is relatively low for used data acquisition process transmitting device, and functional redundancy degree is low, and the reliability of data transmission is higher.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of multi-channel type substation noise synthesis cloud atlas test device, comprising: movable pedestal, fixed disk, floating disc,
Pitching regulating device, control cabinet and several array arms；First driving device, first driving device energy are provided on movable pedestal
Enough driving movable pedestal movements；Fixed disk is mounted on movable pedestal by pitching regulating device, pitching regulating device packet
The second driving device is included, the second driving device can drive the angle measurement of pitching regulating device adjusting test device vertical direction；Gu
It is provided with track on price fixing, floating disc is installed on track, floating disc can move in orbit, the axis of track, fixed disk
Axis be overlapped with the axis of floating disc, third driving device is provided in fixed disk, third driving device can drive floating
Disk orbital motion；Camera is provided in fixed disk；Each array arm is hinged in fixed disk, and each array arm passes through
One connecting rod is connect with floating disc, and the both ends of connecting rod are hinged with array arm and floating disc respectively, floating disc orbital motion
Array arm can be drawn and complete umbrella-type folding；Several sonic transducers are provided on each array arm；Number is provided in control cabinet
According to acquisition processing device and control processor；The signal output end of camera and each sonic transducer is all connected with data acquisition process
The signal receiving end of device；The signal output end of control processor respectively with first driving device, the second driving device and third
The signal receiving end of driving device is connected；Data acquisition processing device includes: sensor board, FPGA, power supply and host computer；Electricity
Source is connected with FPGA, and FPGA is connected with host computer；FPGA includes data decoder module, data processing module, fifo module
And communication module, data decoder module are used to receive the signal of camera and the transmitting of each sonic transducer, data decoder module connects
The data of receipts successively pass through data processing module, fifo module and communication module and pass to host computer.
Further, data acquisition processing device FPGA is also built with data simultaneous module；The data simultaneous module is set
It sets between data decoder module and data processing module.
Further, communication module is realized by Gigabit Ethernet module, and communication speed is not less than 100 megabits per second；
Gigabit Ethernet module includes ARM module, MAC module and Ethernet interface；ARM module includes dma module and ICP/IP protocol stack,
The data receiver of dma module and the data output end of fifo module connect, the data output end and ICP/IP protocol of dma module
The data receiver of stack is connected, and the data output end of ICP/IP protocol stack and the data receiver of MAC module connect, MAC mould
The data output end of block is connected by Ethernet interface with host computer.
Further, pitching regulating device includes the second driving device and rotating arm；Second driving device is pitch regulation
Motor, pitch regulation motor are fixedly mounted on movable pedestal, and the output shaft of pitch regulation motor passes through transmission device and rotation
Pivoted arm is connected, and fixed disk is fixedly mounted on rotating arm；The signal receiving end and output end of pitch regulation motor respectively with control
The signal output end of processor processed is connected with receiving end.
Further, track is screw rod, and third driving device is screw drive motor；Screw rod is spindle rotationally arranged in fixation
On disk, screw rod is connected by transmission device with the output shaft of screw drive motor, and floating disc is mounted on screw rod, screw rod rotation
The axis that floating disc is able to drive along screw rod moves, and axis, the axis of fixed disk of screw rod are overlapped with the axis of floating disc；It floats
Disk orbital motion can draw array arm and complete umbrella-type folding；The signal receiving end and output end of screw drive motor respectively with
The signal output end of control processor is connected with receiving end.
Further, it is fixedly installed optical axis in fixed disk, mounting base for camera head is fixedly installed on optical axis, floating disc can
On optical axis, floating disc is between mounting base for camera head and fixed disk for the setting of sliding.
Further, mounting base for camera head includes installation cavity and protection board, and camera is mounted in installation cavity, and protection board is used
Camera is protected in capping installation cavity.
Further, array arm is provided with sensor board, comprising: power conversion module, clock synchronization module, signal are synchronous
Module, signal conditioning module, signal enhancing module and several sensors；The power input and power supply of power conversion module connect
It connects, the power output end of power conversion module is connect with the power supply receiving end of each sensor；The signal of clock synchronization module is defeated
Outlet is connect with the clock signal receiving end of each sensor；The signal of each sensor acquisition successively passes through the synchronous mould of signal
Block, signal conditioning module and signal enhancing module input FPGA.
Further, sensor board further include: clock buffer module；The signal receiving end and clock of clock buffer module are believed
Number connection, the signal output end of clock buffer module is connected with the signal receiving end of clock synchronization module.
Further, array arm is carbon fiber pipe, and sonic transducer is arranged in carbon fiber pipe, and sonic transducer is embedded declines
Mechanical pick-up device.
Compared with prior art, the invention has the following advantages:
Test device of the invention is able to drive entire test device by movable pedestal and moves in the test section of substation
Dynamic, test device traverses the test section of whole transformer station, so that it may which the noise acoustic image distribution map for obtaining entire measured zone passes through
Whole acoustic image distribution map splicings can be obtained the noise synthesis cloud atlas of whole transformer station by data acquisition processing device, by making an uproar
Sound integrates the position for obtaining noise source that cloud atlas can be accurate and visual.The present invention can adjust array by pitching regulating device
The measurement angle of the vertical direction of arm can also be according to evenness of road surface journey convenient for the alignment of array arm in high-order target to be measured
The difference of degree is adjusted vertical direction angle measurement, guarantees that view angle is consistent, convenient for the image mosaic in later period, can be improved measurement
As a result accuracy passes through the measurement angle of the horizontal direction of the mobile adjustable array arm of movable pedestal；The adjusting of view angle
First driving device is controlled by control processor and the second driving device is realized, adjusting efficiency is higher, and degree of regulation is higher.This
Invention by control processor control third driving device drive floating disc orbital motion, the gathering of achievable array arm with open
It opens, is moved between each measuring point of substation convenient for entire test device when gathering, when opening can be passed by camera harmony
Sensor obtains the acoustic image distribution map of measuring point, and testing efficiency is high, and measuring accuracy is high, reliability with higher；Wherein, camera energy
The image information of enough acquisition noises, sonic transducer are capable of the audio and video information of acquisition noise, and the two cooperation accurate can obtain
The acoustic image distribution map of measuring point accurate can find out noise source position, can mention for the noise abatement of substation and environment evaluation and test
It is supported for data.Array arm size constancy of the invention, by mobile base can realize entire test device movement, it can be achieved that
The sliding of array can synthesize a virtual large scale array by the compensation of phase compensation, spatial position, to can realize
The accurate test of low-frequency noise.Data acquisition process transmitting device is designed specifically in noise cloud atlas test device, no biography
System number adopts the redundancy feature of instrument, the high reliablity of data acquisition transmission；Cost can be reduced, the cost of apparatus of the present invention is compared to mesh
The preceding cost for adopting instrument using number can reduce 30% or so；System boot speed is fast, and several efficiency of adopting are higher, and traditional number adopts instrument use
Be windows operating system, functional redundancy, system starting is slow, and booting can extremely start test and need nearly 3 minutes or so, this
The device of invention since be switched on to can test only need 30 seconds or so, can be improved data acquisition transmission efficiency.
Further, by the way that data simultaneous module is arranged, it can further ensure that the synchronism of data, can reduce factor
According to calculated result deviation caused by poor synchronization.
Further, it is contemplated that information, the communication speed such as transmission control bit are at least up to 100M, just can guarantee data link
It will not block.
Further, pitch regulation motor can Double-directional rotary, by pitch regulation motor driven rotating arm rotate, in turn
It is able to drive fixed disk and rotates the adjusting, it can be achieved that array arm vertical direction measurement angle, without making support frame incline by padded
Oblique mode carries out angle measurement adjusting, can extended testing system device service life, reduce testing cost；It can be with pre- by angle measurement adjusting
If observation angle is continuously shot each measuring point acoustic image, the observation angle control of each measuring point is consistent, splices convenient for later image.
It controls motor by control processor to be adjusted, angle measurement with higher adjusts efficiency, and substation's noise cloud atlas can be improved
Testing efficiency.
Further, it is provided with screw track in fixed disk, moveable floating disc, array are installed in screw track
Arm is hinged in fixed disk and floating disc, and floating disc, which is moved along screw axis far from fixed disk, can be such that array arm shrinks, it is not necessary to
Removing array arm can be realized transport of the test device between measuring point, and it is convenient to operate, and testing efficiency is high；Floating disc is along screw shaft
Line close to fixed disk movement can array arm open, accurate can be obtained by camera and sonic transducer acquisition noise data
Noise cloud atlas is obtained, data are provided and are supported for the noise abatement of substation and environment evaluation and test；According to beam-forming technology, it is able to suppress
The interference of ambient noise obtains noise cloud atlas, can obtain the sounding size of specific each sound source, noise positioning accuracy about 1cm,
Meet high-precision noise in substation and positions needs；The measuring devices such as existing sound level meter, which are limited by safe distance in substation, to be wanted
It asks, development that can not be safe measures, and the present invention can measure farther out apart from sound source, can meet 750,000 apart from 10 meters of sound source
Volt, 1000 kilovolts of even higher measurement requests for charging position.Screw drive motor can rotate and reverse, by changing motor
Steering can control floating disc along the direction of screw motion, and then realize the gathering and opening of array arm, handled by control
Device controls screw drive motor and realizes that the contraction of array arm is opened, and it is convenient to operate, and efficiency is higher.
Further, optical axis plays a part of to support mounting base for camera head and floating disc, reinforces the stabilization of test device movement
Property；Camera is used for the location drawing picture information etc. of acquisition noise, and collecting device, which is added, can block camera, influences the number of camera
According to acquisition, floating disc of the invention is between mounting base for camera head and fixed disk, it is ensured that camera is in front end, avoids floating
Moving plate and collecting device block camera, it is ensured that camera energy normal acquisition image data.
Further, noise cloud atlas is the superposition of acoustic image and image, and the angle of camera collection image is very crucial, at present
Volume array mostly use the mode of bolt or bonding to be connected in fixed disk greatly, be disassembly and assembly structure, each use, which will install, takes the photograph
Picture head also needs to calibrate camera because of the presence of installation error using preceding, and calibration operation is complicated, and time-consuming, and camera
Angle easily change, cause test data misalignment camera can be set by using installation cavity and protection board
Angle protected, after camera first time installation calibrating, save calibration data, every time in use, camera do not have to remove,
Also it is not required to calibrate again, easy to use, the data of test are more accurate.
Further, power conversion module is arranged in sensor board, is connected to sensor proximity nearby, and transmission range is close,
The substation's electromagnetic interference capable of reducing power source being subject to.All the sensors share a clock signal, it is ensured that multiple sensors are tight
Lattice synchronous acquisition ensure that the accurate and reliable of data acquisition.AD is carried out nearby using digital transducer or analog sensor to turn
It changes and (is realized by digital transducer-conditioning circuit or analog sensor-A/D module-conditioning circuit), transmission line number
Word signal can avoid analog signal in substation by electromagnetic interference, further promote collected data in transmission process
In reliability.
Further, clock signal can be made more stable by the way that clock buffer module is arranged, sampled data can be made more steady
It is fixed, measurement error can be finally reduced to a certain extent
Further, the sonic transducer on existing array arm uses external pull out and insert on type sensor, and each use is both needed to plug
Once, often plug influences sensor life-time repeatedly, often falls damage because jolting when using and dismounting, acoustic sensor belongs to
Vulnerable part causes testing cost high, and the present invention uses, and sonic transducer is arranged in carbon fiber pipe, and carbon fiber pipe mentions for sensor
It is not necessarily to remove sonic transducer for protection, and every time after the completion of use, be saved by systolic array arm, convenient for operation, also mentioned
High testing efficiency.The size of embedded micro mechanical sensor is small, can be embedded in sensor arm, be easily installed.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of multi-channel type substation noise synthesis cloud atlas test device of the invention；
Fig. 2 is the explosive view of Fig. 1；
Fig. 3 is the partial enlargement structural representation in Fig. 1 for the mechanism of gathering；
Fig. 4 is the schematic diagram of synthetic aperture measurement method；
Fig. 5 is the data acquisition process that a kind of multi-channel type substation noise synthesis cloud atlas test device of the invention uses
The connection structure schematic block diagram of transmitting device；
Fig. 6 is the data acquisition process that a kind of multi-channel type substation noise synthesis cloud atlas test device of the invention uses
The structural schematic block diagram of the master control borad of transmitting device；
Fig. 7 is the data acquisition process that a kind of multi-channel type substation noise synthesis cloud atlas test device of the invention uses
The structural schematic block diagram of the sensor board of transmitting device；
Fig. 8 is the data transmission schematic block diagram of sensor board in Fig. 7；
Fig. 9 is the data acquisition process that a kind of multi-channel type substation noise synthesis cloud atlas test device of the invention uses
The data of master control borad and sensor board transmit schematic block diagram in transmitting device.
Fig. 1 is into Fig. 3,1 movable pedestal；2 columns；3 rotating arms；4 pitch regulation motors；5U type bracket；6 control cabinets；7
Fixed arm；8 screw drive motors；9 fixed disks；10 optical axis supports；11 adapters；12 array arms；13 protection boards；14 cameras peace
Fill seat；15 screw holders；16 thread bush；17 optical axises；18 linear bearings；19 floating discs；20 connecting rods.
Specific embodiment
Invention is further described in detail in the following with reference to the drawings and specific embodiments.
Referring to figs. 1 to Fig. 3, a kind of multi-channel type substation noise synthesis cloud atlas test device of the invention, comprising: removable
Dynamic pedestal 1, fixed disk 9, floating disc 19, pitching regulating device, control cabinet 6, analog-digital commutator and several array arms 12.
First driving device is provided on movable pedestal 1, first driving device can drive movable pedestal 1 to move；
Movable pedestal 1 is crawler type or hub-type.Crawler type movable pedestal 1 can enhance the passability of extreme terrain；For
Measurement inside Jin Xu substation, because substation's landform is generally flatter, the also achievable measurement of wheeled movable pedestal 1.
Structure one kind of pitching regulating device is duplex pull rod mechanism；Another kind includes the second driving device and rotating arm 3；The
Two driving devices are pitch regulation motor 4, and pitch regulation motor 4 is fixedly mounted in u-bracket 5, and u-bracket 5 passes through column 2
Be fixedly mounted on movable pedestal 1, the output shaft of pitch regulation motor 4 be connected by transmission device with rotating arm 3 or
Rotating arm 3 is directly fixedly mounted on output shaft, and fixed disk 9 is fixedly mounted on rotating arm 3 by fixed arm 7；Pitch regulation
The signal receiving end and output end of motor 4 are connected with the signal output end of control processor and receiving end respectively.Present survey
Trial assembly, which is set, does not have angle measurement regulatory function, it is more difficult to alignment target object；When encountering the measuring point for needing to adjust the angle, artificial pad is generallyd use
The mode of high carriage, this mode efficiency is lower, test data is not accurate enough and is easily damaged test equipment.Rotation of the invention
Pivoted arm 3 sets the torque transfer of pitch regulation motor 4 to fixed arm 7, pitch regulation motor 4 to rotating arm 3 and its with upper bit
It is standby to carry out pitch regulation, the fixed pitch regulation motor 4 of u-bracket 5 and rotating arm 3, it is fixedly connected with column 2, column 2 is for branch
Entire hot-wire array is supportted, allows hot-wire array that there is certain height.Pitch regulation motor 4 can Double-directional rotary, pass through pitching tune
Saving motor 4 drives rotating arm 3 to rotate, and then is able to drive the rotation of fixed disk 9, it can be achieved that 12 vertical direction measurement angle of array arm
Adjusting, without making the inclined mode of support frame carry out angle measurement adjusting by padded, can extended testing system device service life, drop
Low testing cost；By angle measurement adjusting each measuring point acoustic image, the observation of each measuring point can be continuously shot to preset observation angle
Angle control is consistent, splices convenient for later image.It controls motor by control processor to be adjusted, angle measurement tune with higher
Efficiency is saved, the testing efficiency of substation's noise cloud atlas can be improved.And existing volume configuration test device is supported by tripod,
Each shooting angle is inconsistent, and image mosaic is difficult and there is distortion, and existing tripod manual handling tests entire change
Power station workload is very big, is not easy to realize.
It is provided with track in fixed disk 9, floating disc 19 is installed on track, floating disc 19 can move in orbit, rail
The axis in road, the axis of fixed disk 9 are overlapped with the axis of floating disc 19, and third driving device is provided in fixed disk 9, and third is driven
Dynamic device can drive 19 orbital motion of floating disc.Specifically: track is screw rod, and third driving device is screw drive motor
8；Screw rod is spindle rotationally arranged in fixed disk 9, and screw rod is connected by linear bearing 18 with the output shaft of screw drive motor 8
It connecing, floating disc 19 is mounted on screw rod, and screw rod rotation is able to drive floating disc 19 and moves along the axis of screw rod, the axis of screw rod,
The axis of fixed disk 9 is overlapped with the axis of floating disc 19；19 orbital motion of floating disc can draw array arm 12 and complete umbrella-type
Folding；The signal receiving end and output end of screw drive motor 8 respectively with the signal output end of control processor and receiving end phase
Connection.Screw drive motor 8 converts torque, drives screw turns, and realizes that floating disc 19 is moved forward and backward along screw rod.In fixed disk
It is provided with screw track on 9, moveable floating disc 19 is installed in screw track, array arm 12 is hinged on fixed disk 9 and floats
On Moving plate 19, floating disc 19, which is moved along screw axis far from fixed disk 9, can be such that array arm 12 shrinks, it is not necessary to remove array arm 12
Transport of the test device between measuring point can be realized, it is convenient to operate, and testing efficiency is high；Floating disc 19 is along screw axis close to solid
Price fixing 9 movement can array arm 12 open, accurate can be made an uproar by camera and sonic transducer acquisition noise data
Sound cloud atlas provides data and supports for the noise abatement of substation and environment evaluation and test；According to beam-forming technology, it is able to suppress background
The interference of noise obtains noise cloud atlas, can obtain the sounding size of specific each sound source, and noise positioning accuracy about 1cm meets
The positioning of high-precision noise needs in substation；The measuring devices such as existing sound level meter are limited by safe distance requirement in substation,
Can not safety development measurement, the present invention can measure farther out apart from sound source, can meet apart from 10 meters of sound source 750 kilovolts,
The measurement request at 1000 kilovolts of even higher electrification positions.Screw drive motor 8 can rotate and reverse, by changing motor
Steering can control floating disc 19 along the direction of screw motion, and then realize the gathering and opening of array arm 12, at control
It manages device control screw drive motor 8 and realizes that the contraction of array arm 12 is opened, it is convenient to operate, and efficiency is higher.
It is fixedly installed optical axis 17 in fixed disk 9, mounting base for camera head 14 is fixedly installed on optical axis 17, floating disc 19 can
On optical axis 17, floating disc 19 is between mounting base for camera head 14 and fixed disk 9 for the setting of sliding；Specifically: optical axis 17
One end is fixedly mounted in fixed disk 9 by optical axis support 10, and the other end of optical axis 17 passes through the optical axis through-hole on floating disc 19,
One end of 17 pass-out optical axis through-hole of optical axis is fixedly installed with mounting base for camera head 14 by screw holder 15 and thread bush 16.It takes the photograph
Picture head mounting base 14 includes installation cavity and protection board 13, and camera is mounted in installation cavity, and protection board 13 is for covering installation cavity
Protect camera.Mounting base for camera head 14 is for installing fixing camera.Optical axis 17 plays support mounting base for camera head 14 and floats
The stability of test device movement is reinforced in the effect of disk 19；Camera is used for the location drawing picture information etc. of acquisition noise, is added and receives
Camera can be blocked by holding together device, influence camera data acquisition, floating disc 19 of the invention be in mounting base for camera head 14 and
Between fixed disk 9, it is ensured that camera is in front end, avoids floating disc 19 and collecting device from blocking camera, it is ensured that camera
It can normal acquisition image data.Noise cloud atlas is the superposition of acoustic image and image, and the angle of camera collection image is very crucial, mesh
Preceding volume array mostly uses greatly the mode of bolt or bonding to be connected in fixed disk 9, is disassembly and assembly structure, and each use will install
Camera also needs to calibrate camera because of the presence of installation error using preceding, and calibration operation is complicated, and time-consuming, and images
The angle of head easily changes, and causes the data misalignment of test can be to camera by using installation cavity and protection board 13
The angle of setting is protected, and after camera first time installation calibrating, calibration data is saved, every time in use, camera does not have to
It removes, is also not required to calibrate again, easy to use, the data of test are more accurate.
Each array arm 12 is hinged in fixed disk 9, and each array arm 12 passes through a connecting rod 20 and floating disc
19 connections, the both ends of connecting rod 20 are hinged with array arm 12 and floating disc 19 respectively, and 19 orbital motion of floating disc can be drawn
Array arm 12 completes umbrella-type folding；Adapter 11 connects array arm 12 and fixed disk 9,20 connecting adapter 11 of connecting rod and floating
Disk 19 draws array arm 12 according to the back-and-forth motion of floating disc 19 and adapter 11 carries out umbrella-type folding, completes array arm 12
It opens and collapses.It is moved between each measuring point of substation when gathering convenient for entire test device, when opening can pass through camera shooting
Head and sonic transducer obtain the acoustic image distribution map of measuring point, and testing efficiency is high, and measuring accuracy is high, reliability with higher.In addition,
Array arm 12 is hinged in fixed disk 9 and floating disc 19, and floating disc 19, which is moved along track far from fixed disk 9, can make array arm 12
It shrinks, it is not necessary to which removing array arm 12 can be realized the transport of test device, and it is convenient to operate, and testing efficiency is high；Floating disc 19 is along rail
Road close to the movement of fixed disk 9 can array arm 12 open, can be relatively accurate by camera and sonic transducer acquisition noise data
Acquisition noise cloud atlas, accurate can find out noise source position, for the noise abatement of substation and environment evaluation and test number is provided
According to support.Test device of the invention can shrink array arm 12 in the moving process of test, without frequently dismounting, can subtract
The damage of few equipment component, can reduce testing cost.
The quantity of array arm 12 is 7-10, and the quantity for the sonic transducer being arranged on each array arm 12 is 9-12, battle array
Column arm 12 forms umbrella shape array, rectangular array or spirality array, and array arm 12 is carbon fiber pipe, and sonic transducer is arranged in carbon
In fibre pipe, sonic transducer is embedded micro mechanical sensor.Array arm 12 selects carbon fiber pipe to can be used as sensor outer housing, has
There is certain electromagnetic interference shield effect, manages interior installation sonic transducer, the anti-interference ability of sonic transducer can be improved.Umbrella shape array
It can pack up, be readily transported as umbrella when not in use.By measuring and calculating, the quantity of array arm 12 is 7-10, each array arm
The quantity for the sonic transducer being arranged on 12, which is 9-12, can obtain preferable test effect.Sound sensing on existing array arm 12
Device uses external pull out and insert on type sensor, and it is primary that each use is both needed to plug, often plug influence sensor life-time repeatedly, using with
Damage is often fallen because jolting when dismounting, acoustic sensor belongs to vulnerable part, causes testing cost high, the present invention uses and passes sound
Sensor is arranged in carbon fiber pipe, and carbon fiber pipe provides protection for sensor, and is not necessarily to remove sound sensing every time after the completion of use
Device is saved by systolic array arm 12, convenient for operation, also improves testing efficiency.The ruler of embedded micro mechanical sensor
It is very little small, it can be embedded in sensor arm, be easily installed.
Data acquisition processing device and control processor are provided in control cabinet 6；The letter of camera and each sonic transducer
Number output end is all connected with the signal receiving end of data acquisition processing device；The signal output end of control processor drives with first respectively
Dynamic device, the second driving device are connected with the signal receiving end of third driving device.It can be collected by control cabinet 6
Noise data and complete splicing and obtain noise synthesis cloud atlas, control pitch regulation motor 4 and spiral shell can be controlled by control cabinet 6
The contraction of the operating status of bar driving motor 8, the angle measurement adjusting and array arm 12 of realizing the vertical direction of test device is opened, just
In operation, convenient for the transport and carrying of test device entirety.The signal output end of sonic transducer passes through analog signal line and modulus
The analog signal receiving end of conversion equipment is connected, and the digital signal output end of analog-digital commutator passes through digital signal line and number
It is connected according to the digital signal reception end of acquisition device, analog signal line and digital signal line are all set in array arm 12, mould
Analog-to-digital conversion apparatus is arranged close to sonic transducer.Electromagnetic interference in substation is stronger, and collected sonic transducer is analog signal,
It is transmitted by analog signal line, the reliability of data transmission is poor, and the analog signal that the present invention acquires sonic transducer turns
It turns to digital signal to be transmitted, the reliability of data transmission can be enhanced.
With reference to Fig. 5 and Fig. 6, a kind of data of multi-channel type substation noise synthesis cloud atlas test device use of the invention
Acquisition process transmitting device, comprising: sensor board, Field Programmable Logic Array FPGA, power supply and host computer；Power supply and master control
Plate is connected by DC-0005 connector, and power supply provides power supply for master control borad, and FPGA is connected with host computer.
FPGA includes data decoder module, data simultaneous module, data processing module, pushup storage fifo module
And communication module, data decoder module are connected by external interface with sensor board, the received data of data decoder module according to
It is secondary to pass to host computer by data simultaneous module, data processing module, fifo module and communication module.It is same by setting data
Module is walked, can further ensure that the synchronism of data, calculated result deviation caused by can reduce because of data poor synchronization.
Communication module realizes that communication speed is not less than 100 megabits per second by Gigabit Ethernet module or USB module.
USB module is made of USB driving circuit, and the data receiver of dma module and the data output end of fifo module connect, DMA mould
The data output end of block is connect with USB driving circuit, and the data of acquisition are output to USB from equipment through USB driving circuit.It considers
Information, the communication speeds such as transmission control bit are at least up to 100M, just can guarantee that data link will not block.
Gigabit Ethernet module is realized by ARM or FPGA.Gigabit Ethernet module includes ARM module, MAC module and ether
Network interface；ARM module includes dma module and ICP/IP protocol stack, and the data receiver of dma module and the data of fifo module export
End connection, the data output end of dma module are connected with the data receiver of ICP/IP protocol stack, the data of ICP/IP protocol stack
The data output end of the connection of the data receiver of output end and MAC module, MAC module is connected by Ethernet interface with host computer
It connects.Data enter in FPGA K7 controller the decoding for carrying out array data, data source synchronization, agreement framing, and are stored in high speed
FIFO, and ARM A9 controller is notified in the form of interruption.ARM A9 controller uses DMA reading group frame number from FPGAK7
According to, and exported by ICP/IP protocol stack.Data are sent to after the processing of gigabit Ethernet PHY chip by gigabit Ethernet mouth
Host computer carries out data processing and arithmetic analysis.
With reference to Fig. 7 to Fig. 8, sensor board includes: power conversion module, clock buffer module, clock synchronization module, signal
Synchronization module, signal conditioning module, signal enhancing module and several sensors；The power input and power supply of power conversion module
Connection, the power output end of power conversion module are connect with the power supply receiving end of each sensor；The signal of clock buffer module
Receiving end is connect with clock signal, and the signal output end of clock buffer module is connected with the signal receiving end of clock synchronization module
It connects, the signal output end of clock synchronization module is connect with the clock signal receiving end of each sensor；Each sensor acquisition
Signal successively passes through signal synchronization module, signal conditioning module and signal enhancing module input FPGA.Specifically: external interface
Clock by buffering and Multi-path synchronous after give sensor, then to sensor response data carry out signal condition, synchronization,
Signal enhancing etc., and collection plate is given by external interface.The 5V power supply that outside provides is converted to inside by power conversion module
Power supply needed for microphone, that is, sensor and circuit.Power conversion module is arranged in sensor board, and it is attached to be connected to sensor nearby
Closely, transmission range is close, the substation's electromagnetic interference capable of reducing power source being subject to.All the sensors share a clock signal, can protect
Multiple sensor stringent synchronization acquisitions are demonstrate,proved, ensure that the accurate and reliable of data acquisition.Use digital transducer or analog sensed
Device is AD converted (real by digital transducer-conditioning circuit or analog sensor-A/D module-conditioning circuit nearby
It is existing), transmission line digital signal can avoid analog signal in substation by electromagnetic interference, further be promoted and be collected
Reliability of the data in transmission process.Clock signal can be made more stable by the way that clock buffer module is arranged, can make to adopt
Sample data are more stable, can finally reduce measurement error to a certain extent.
The data acquisition process transmitting device of substation's noise cloud atlas test device of the invention carries out digital mould in front end
Quasi- transformation is transmitted to data processing centre by digital transmission line, and Data processing is counted by programmable logic array in the heart
According to processing, coordinated control is carried out by ARM, and be transmitted to rear end through Ethernet, or local guarantor is carried out by built-in, external memory
It deposits.The data acquisition process transmitting device of substation's noise cloud atlas test device of the invention is tested specifically in noise cloud atlas
Device design, no traditional number adopt the redundancy feature of instrument, the high reliablity of data acquisition transmission；Cost, present invention dress can be reduced
The cost set can reduce 30% or so using the cost that number adopts instrument compared at present；System boot speed is fast, number adopt efficiency compared with
Height, traditional number adopt instrument and use windows operating system, and functional redundancy, system starting is slow, and booting, which can extremely start test, to be needed
Want nearly 3 minutes or so, the device of the invention since be switched on to can test only need 30 seconds or so, can be improved data acquisition pass
Defeated efficiency.
A kind of control cabinet of substation's noise cloud atlas test device, master control borad is provided in control cabinet, and FPGA is arranged in master
It controls on plate.Master control borad is inclined in control cabinet, and waterproof construction is provided on master control borad；The waterproof construction includes drainage hole
And gas vent.The circuit board of data acquisition process transmitting device carries out anti-corrosion treatment.Number is provided in control cabinet of the invention
According to acquisition process transmitting device, data acquisition process transmitting device small in volume can be realized handhold portable acquisition.
Avoid ponding structure: the external form of master control borad properly tilts, and reduces hole, slot etc. to the greatest extent, in possible ponding and retention
The space of moisture opens up draining and gas vent, and avoid rough surface etc..So that ponding is quickly excluded, prevents ponding
The erosion at place.Under the biggish climatic environment of humidity, control cabinet is avoided as far as possible using structure types such as spot welding, riveting, screw threads for fastening,
The preferential structure type for selecting sheet metal structural or integral cast cabinet to avoid crevice corrosion is formed, while can form gap
It is subject to encapsulation process at corrosion or adds sealing gasket.In same structure, such as used different types of metal, then it should be wherein
Plating, which is coated, on a kind of metal allows the coat of metal being in contact with second of metal or two kinds of metal materials to plate same gold
Belong to coating, or apply insulating protective layer between two metals or place liner, the EMC Requirements of equipment should be taken into account at this time.
In the case where being possible to generate stress corrosion cracking, it should be noted that avoid the structure type for causing stress to be concentrated, and take suitably
Technological measure eliminate internal stress.It is easiest to that corrosion occurs and maximum corrosion location thickeies scantling, commonly referred to as " corrosion is abundant
Degree ", generally takes the desired amount of twice of life expectancy.The part for damaging for corrosion-vulnerable and must being regularly maintained and replacing, is answered
Guarantee from structure for ease of maintenaince, replacement.Add chemical coating.Structural member surface is produced with the method for electrochemistry or chemistry
Certain compound and form coating, with achieve the purpose that environment resistant factor influence.Anti-corrosion treatment is carried out in circuit board surface,
Special three-proofing coating is sprayed, guarantees that acid and salt fog cannot directly contact circuit board.
A kind of data acquisition process transmission method of substation's noise cloud atlas test device, comprising the following steps:
A, the signal of the sensor acquisition of sensor board synchronizes after analog-to-digital conversion, data encoding passes to FPGA；
B, data, which enter after FPGA, successively carries out being stored in fifo module after data decoding, data source be synchronous and agreement framing,
And notify communication module；
C, communication module reads Framed Data from FPGA, and passes to host computer.
Wherein, in step A, the clock signal of external interface is passed by buffering and giving each sensor after Multi-path synchronous
The data of sensor acquisition pass to FPGA after successively carrying out signal condition, synchronization and signal enhancing；
Power supply needed for the power supply that outside provides is converted to internal sensor and circuit by power conversion module.
In step B, communication module is notified in the form of interruption.
In step C, host computer is passed to by Ethernet or USB.
Communication module can be realized by Gigabit Ethernet module or high speed USB module, it is desirable that its communication speed is not less than 100,000,000
Bits per second, communication module are connected to the interruption that FPGA is sent and are followed by by data and send data to host computer.Communication module
It can receive the control data that host computer is sent simultaneously, control data bag includes the setting of sensor sample rate and motor control
Data, the data are transmitted to FPGA via communication module, and FPGA control sensor is sampled with the sample rate that host computer is assigned
Or the revolving speed that requires according to host computer of control motor and direction work.
In existing collecting and transmitting method, the collected analogue data of sensor is directly sent to by coaxial cable mostly
Number adopts host, and 2 meters of analog signal data wire length or so, electromagnetic environment is complicated in substation, and signal will affect measurement vulnerable to interference
As a result accuracy and reliability；What is transmitted in transmission method of the invention is digital signal, digital signal strong antijamming capability.
In current collecting and transmitting method, sensing data enters number and adopts, and counting in adopting has host computer, and host computer is exactly a PC machine, can
Think and to know that number is adopted very big very heavy, it has not been convenient to carry.FPGA module very little of the invention, easy to use, booting quickly, passes through gigabit
Ethernet is transferred to host computer, and host computer is unrestricted, and laptop can be transferred to gigabit wireless ethernet, and (notebook is made
For host computer), use is more convenient, it is known that number of the invention adopts transmission method using more flexible.
Existing volume array test device is dismounting connection, and former array splits into multiple components difference for the ease of transport
Be packaged, to use site after all assembling uses again, be related to components more than 300, be easily lost, cause testing cost higher；
Time-consuming assembling need 2 hours for man-made assembly；Consumption is artificial more, needs 4 people to cooperate and completes overall package work；In addition, itself it is difficult to ensure that
Measurement is all same observation angle every time, and the cloud atlas that when image mosaic obtains is imperfect, cannot accurately react making an uproar in substation
Several source situations.Test device of the invention has from traveling mechanism, can artificial or process control, entire power transformation can be automatically performed
The noise positioning work stood, captured photo angle is consistent, can be by the noise testing of each shooting point by image mosaic technology
Image mosaic becomes the noise cloud atlas of a whole substation；The fixed connection of test device whole mechanical device of the invention,
Using and recycle only needs to split into whole system into several components on demand, can avoid losing, and the gathering of array arm 12 can be transported, nothing
It needing to dismantle, using and recycle only needs 10 minutes, it is only necessary to work can be completed in 1 people's control, largely reduces workload,
Testing efficiency is improved, testing cost is reduced.Existing volume array test device array arm 12 is fixed in fixed disk 9, Gu
Price fixing 9 is fixed on bracket, can not automatically adjust angle measurement and movement, and by the way of manually adjusting and carrying, workload is huge
Big and angle measurement is difficult to accurately be consistent, and can not realize and synthesize virtual large-size matrix by array sliding；Survey of the invention
Trial assembly, which is set, can more accurately adjust measurement angle by angle measurement regulating device, angle measurement can be made to be consistent, convenient for the image in later period
With the superposition processing of acoustic image, the accuracy of acoustic image distribution map can be improved, the mobile energy of test device is driven by movable pedestal 1
Any number of measuring points are enough chosen, workload is greatly reduced, virtual by the compensation synthesis one of phase compensation, spatial position
Large scale array, it can be achieved that in substation low-frequency noise precise measurement.Wherein, bobbin movement is controllable, therefore can degree of precision
Control travel distance, such as mono- measuring point of every advance 75.5cm, manual handling be unable to accurately control forward travel distance, and workload
It is larger；Array be can guarantee towards unchanged direction, multiple measuring points are measured using identical measurement angle, and manual handling often makes
It obtains array to deflect, influences test result.The low-frequency noise positioning accuracy of existing volume configuration measuring device is insufficient, at present
There are no a kind of low-frequency noise high precision testing devices that is sufficiently large and allowing access into substation.
The working principle of the invention analysis: the process of phase compensation and spatial position compensation synthesis virtual array needs accurate
Location information, existing volume configuration test device mostly use greatly tripod to carry out support volume battle array, and manual handling shift position is moved
Dynamic difficult and angle measurement is difficult to adjust, and not can guarantee the accuracy of synthesis, according to the long 1.7 meters of calculating of the sound wave of the 200Hz velocity of sound, carries
When position it is every deviate 0.1 meter, will lead to phase error increase by 5%；At present beamforming algorithm phase error should control 2% with
It is interior.Since substation's main noise is continuous and stable, it is possible to using the correlation of sound source radiation signal, by certain
Phase and spatial position compensation, by basic matrix along fixed-direction move multiple positions after superposition synthesize virtual large aperture battle array
Column, to obtain the noise source locating effect for being equal to large aperture array.Specifically: (1) select the wanted one-point measurement of receiving array
Position, fixed near its forward direction one with battle array center with high microphone as reference array element, and with reference to receive
The signal of point continuous sampling noise field；(2) it allows array to move along noise source transmission face parallel direction, believes the spatial sampling of array
Breath maximizes.It is often moved to a position, will stop and several seconds are acquired to noise source regional signal.And it records every time mobile
Length d, the array of each position regarded to a subarray of virtual array as, virtual array made of extending after mobile n times
Column are considered as the large aperture array that horizontal span is D+d × n, and wherein D is the diameter projected of array；(3) when all mobile positions
Set place signal acquisition it is complete after, by collected signal by a certain centre frequency be fhNarrow band filter, utilize
Hilbert converts the plural form for obtaining signal, right after the reference phase difference for calculating first subarray and other subarrays
The reception signal of all subarrays is synthesized, and obtained auditory localization result is the acoustic fix ranging knot of virtual array after extending
Fruit.
Synthetic aperture algorithm is it is assumed that array has M array element, and each array is not deposited between each other after moving
The phenomenon that array element is overlapped.Rectangular coordinate system in space is established as coordinate origin using the geometric center of basic matrix at position 1, if target is made an uproar
There is m in sound source regionsThe point sound source of a same frequency, then sound-source signal can be expressed as following form:
Wherein, A is the amplitude of sound-source signal, rikIt is the coordinate vector of i-th k point sound source, ω is signal angular frequency, and k is
Wave number.
So, the signal that m-th of array element of n-th of subarray of entire virtual large aperture array receives is
In above formula, rn,mIt is the coordinate vector of n-th of subarray, m-th of array element, θnIt is the initial reference of n-th of subarray
Phase, and 1≤n≤ns, 1≤m≤M.
Because the position of reference array element is fixed, different moments received signal is only dependent upon the change of its initial phase
Change, therefore can use the reference array element received signal with subarray synchronized sampling, it is initial between each submatrix to calculate
Reference phase difference Δ θn1,n2
Δθn1,n2=θn1-θn2=arg [E (sn1/sn2)] (3)
Wherein, θn1、θn2It is the initial reference phase of the n-th 1 and the n-th 2 submatrixs, s respectivelyn1、sn2It is the n-th 1 and the n-th 2 respectively
A submatrix is synchronized with the sampled signal of reference array element, its explement is sought in arg [] expression, its expectation is asked in E [] expression.
At this point, n-th of the subarray inscribed when based on virtual large aperture basic matrix, m-th of array element received signal xn,m(t) may be used
It is converted according to the following formula, is expressed as the input letter of n-th of large aperture basic matrix, m-th of the subarray array element after synthesis
Number x'n,m(t):
All subarray received signals can be synchronous with the realization of the reception signal of first subarray, thus by each
The reception signal of position subarray is converted into the whole of virtual large aperture basic matrix and receives signal.If q-th of basic matrix of virtual large aperture
Microphone (1≤q≤(ns+ 1) × M) correspond to n-th of subarray, m-th of array element, enable yq(t)=x 'n,m(t), then synthetic aperture
Signal covariance matrix that treated are as follows:
Rq1,q2=E [yq1(t)yq2(t)], 1≤q1, q2≤(ns+1)×M (5)
In above formula, yq1(t)、yq2(t) be respectively q1, q2 microphones of virtual basic matrix reception signal.Enable noise source institute
The plane of scanning motion on any point coordinate vector be rs, then the wave beam at the scanning element exports PsAre as follows:
Ps=wHRw
Wherein w is weighing vector, and
After point all on the plane of scanning motion has been calculated, the Energy distribution of noise source can be obtained.
A kind of substation's noise synthesis cloud atlas test method of the invention, specifically includes the following steps:
Step 1, test device is taken out and is assembled, test device is powered, turn on the power switch and wait the system of starting in 30 seconds
System；
Step 2, measuring point quantity, point position and observation angle are set by control processor；
Step 3, the travel route and travel speed for setting movable pedestal 1, are transported test device by movable pedestal 1
It send to first measuring point；Specifically: after control processor controls the gathering of array arm 12, passes through movable pedestal 1 and transport test dress
It sets to default measuring point；After test device reaches default measuring point, array arm 12 is controlled by control processor and is opened；
Step 4, the level that first driving device drives movable pedestal 1 to adjust test device is controlled by control processor
The angle measurement in direction controls the level side that the second driving device drives pitching regulating device to adjust test device by control processor
To angle measurement, keep the measurement angle of test device consistent with preset view angle；
Step 5, the image information that noise at measuring point is acquired by camera is acquired by acoustic sensor array and is made an uproar at measuring point
The information of acquisition is transferred to data acquisition process control device by the audio and video information of sound, and all measurement does not finish then default measuring point
Go to step 6, all measurement finishes default measuring point, gos to step 7；
Step 6, test device is transported to by next default measuring point by movable pedestal 1；View angle, which needs to adjust, then jumps
Go to step 4, view angle does not need adjustment and then gos to step 5；
Step 7, image mosaic is carried out by the acoustic image that data acquisition processing device acquires all measuring points, obtained entire
The noise synthesis cloud atlas of substation.
Image mosaic specific steps include: in step 7
(1) image preprocessing carries out Histogram Matching, smothing filtering and enhancing to the original acoustic image of acquisition and converts；
(2) the pretreated whole acoustic images of step (1) are carried out time and spatial registration, obtained corresponding by image registration
Conversion mathematical model relationship；
(3) image mosaic, the conversion mathematical model relationship obtained according to step (2) is by step (1) pretreated whole
Acoustic image carries out splicing synthesis, obtains the noise synthesis cloud atlas of whole transformer station.
Claims (10)
1. a kind of multi-channel type substation noise synthesis cloud atlas test device characterized by comprising movable pedestal (1) is consolidated
Price fixing (9), floating disc (19), pitching regulating device, control cabinet (6) and several array arms (12)；
First driving device is provided on movable pedestal (1), first driving device can drive movable pedestal (1) to move；
Fixed disk (9) is mounted on movable pedestal (1) by pitching regulating device, and pitching regulating device includes the second driving dress
It sets, the second driving device can drive the angle measurement of pitching regulating device adjusting test device vertical direction；Fixed disk is arranged on (9)
There is track, be equipped on track floating disc (19), floating disc (19) can move in orbit, the axis of track, fixed disk (9)
Axis be overlapped with the axis of floating disc (19), third driving device is provided in fixed disk (9), third driving device can drive
Dynamic floating disc (19) orbital motion；Fixed disk is provided with camera on (9)；
Each array arm (12) is hinged on fixed disk (9), and each array arm (12) by a connecting rod (20) and is floated
Moving plate (19) connection, the both ends of connecting rod (20) respectively with array arm (12) and floating disc (19) hingedly, floating disc (19) is along rail
Road movement can draw array arm (12) and complete umbrella-type folding；Several sonic transducers are provided on each array arm (12)；
Data acquisition processing device and control processor are provided in control cabinet (6)；The signal of camera and each sonic transducer
Output end is all connected with the signal receiving end of data acquisition processing device；The signal output end of control processor drives with first respectively
Device, the second driving device are connected with the signal receiving end of third driving device；
Data acquisition processing device includes: sensor board, FPGA, power supply and host computer；Power supply is connected with FPGA, FPGA with it is upper
Position machine is connected；
FPGA includes data decoder module, data processing module, fifo module and communication module, and data decoder module is for receiving
Camera and each sonic transducer transmitting signal, the received data of data decoder module successively pass through data processing module,
Fifo module and communication module pass to host computer.
2. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 1, which is characterized in that number
Data simultaneous module is also built with according to acquisition processing device FPGA；The data simultaneous module is arranged in data decoder module sum number
According between processing module.
3. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 1, which is characterized in that logical
Believe that module is realized by Gigabit Ethernet module, communication speed is not less than 100 megabits per second；Gigabit Ethernet module includes
ARM module, MAC module and Ethernet interface；
ARM module includes dma module and ICP/IP protocol stack, and the data receiver of dma module and the data of fifo module export
End connection, the data output end of dma module are connected with the data receiver of ICP/IP protocol stack, the data of ICP/IP protocol stack
The data output end of the connection of the data receiver of output end and MAC module, MAC module is connected by Ethernet interface with host computer
It connects.
4. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 1, which is characterized in that bow
Facing upward regulating device includes the second driving device and rotating arm (3)；Second driving device is pitch regulation motor (4), pitch regulation
Motor (4) is fixedly mounted on movable pedestal (1), and the output shaft of pitch regulation motor (4) passes through transmission device and rotating arm
(3) it is connected, fixed disk (9) is fixedly mounted on rotating arm (3)；The signal receiving end and output end of pitch regulation motor (4)
It is connected respectively with the signal output end of control processor and receiving end.
5. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 1, which is characterized in that rail
Road is screw rod, and third driving device is screw drive motor (8)；Screw rod is spindle rotationally arranged on fixed disk (9), and screw rod passes through
Transmission device is connected with the output shaft of screw drive motor (8), and floating disc (19) is mounted on screw rod, and screw rod rotation being capable of band
Dynamic floating disc (19) are moved along the axis of screw rod, the axis weight of the axis of screw rod, the axis of fixed disk (9) and floating disc (19)
It closes；Floating disc (19) orbital motion can draw array arm (12) and complete umbrella-type folding；The signal of screw drive motor (8) connects
Receiving end and output end are connected with the signal output end of control processor and receiving end respectively.
6. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 1, which is characterized in that Gu
It is fixedly installed optical axis (17), is fixedly installed on optical axis (17) mounting base for camera head (14) on price fixing (9), floating disc (19) can
On optical axis (17), floating disc (19) is between mounting base for camera head (14) and fixed disk (9) for the setting of sliding.
7. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 6, which is characterized in that take the photograph
Picture head mounting base (14) includes installation cavity and protection board (13), and camera is mounted in installation cavity, and protection board (13) is for covering
Installation cavity protects camera.
8. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 1, which is characterized in that battle array
Column arm (12) is provided with sensor board, comprising: power conversion module, clock synchronization module, signal synchronization module, signal condition mould
Block, signal enhancing module and several sensors；The power input of power conversion module connects to power supply, power conversion module
Power output end is connect with the power supply receiving end of each sensor；The signal output end of clock synchronization module and each sensor
The connection of clock signal receiving end；The signal of each sensor acquisition successively passes through signal synchronization module, signal conditioning module and letter
Number enhancing module input FPGA.
9. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 8, which is characterized in that pass
Sensor plate further include: clock buffer module；The signal receiving end of clock buffer module is connect with clock signal, clock buffer module
Signal output end be connected with the signal receiving end of clock synchronization module.
10. a kind of multi-channel type substation noise synthesis cloud atlas test device according to claim 1, which is characterized in that
Array arm (12) is carbon fiber pipe, and sonic transducer is arranged in carbon fiber pipe, and sonic transducer is embedded micro mechanical sensor.
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