CN105606953B - A kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction - Google Patents
A kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction Download PDFInfo
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- CN105606953B CN105606953B CN201510571108.0A CN201510571108A CN105606953B CN 105606953 B CN105606953 B CN 105606953B CN 201510571108 A CN201510571108 A CN 201510571108A CN 105606953 B CN105606953 B CN 105606953B
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Abstract
The invention discloses it is a kind of it is automatic close sound and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting, what the sound magnetic-synchro fixed point module that is mainly made of high performance Blackfin dsp processors and its peripheral circuit, capacitive touch switch were formed automatic closes sound module and intelligent background noise reduction resetting module that acceleration transducer is formed forms.Dsp processor and its peripheral circuit are used for the sound and magnetic field signal of detection cable trouble point electric discharge, using EMD filtering techniques, analysis sound magnetic-synchro transmission time difference, and are exported after carrying out intelligent background noise reduction to voice signal；It realizes that the automatic of audio signal output closes sound function using capacitive touch switch, prevents volume damage check personnel's ear of excessive decibel in instrument moving process；It is moved using acceleration transducer detecting instrument and realizes the resetting of background noise reduction.The present invention has high computational accuracy and the calculating speed being exceedingly fast, superpower anti-strong electromagnetic ability, multifunctional comprehensive and high integrated level；And its is portable, more intelligent, more humane.
Description
Technical field
The present invention relates to type cable failure positioning detection device in electric system and electronic technology, more particularly to a kind of precision
High, portable, intelligent, hommization the automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction.
Background technology
With the development of social economy and the quickening of modernization construction paces, the electricity consumption of industrial and agricultural production and people's lives
Increasingly increase, it is increasing to the demand of electric power, it is desirable that the safe operation of power grid is also higher and higher.It is various electrical as connecting
Equipment, transmission and the buried power cable for distributing electric energy, gradually instead of the position of overhead line.Buried cable power supply
Transmission performance both stablized in town and country internal ratio overhead line, reliability is high, and takes up little area, and the appearance of the city will not be impacted, also not by
The restriction of natural environment, so as to improve the safety of power supply.
But power cable fault detection becomes a problem for restricting cable development, particularly after the bigness scale of trouble point
Pinpoint technology.Power supply reliability can be improved by quickly and accurately determining the trouble point of power cable, reduce fault restoration expense
And loss of outage.Along with increasing for power cable fault, how quickly, accurately, economically search trouble point, become people pass
One focus of note.Power cable fault point detection is the strong work of a technical comparison, and testing staff is needed to slap well
Testing principle and method are held, and with certain working experience.Moreover, for power cable fault, it is necessary to use set of instrument
Device and special method are detected.
In general, property of the Cable fault examination firstly the need of determining cable fault；Then according to nature of trouble to trouble point
Distance carries out bigness scale；After bigness scale, cable trace is determined with path instrument；According to different faults property, suitable fix-point method is selected,
And accurately measure the position of trouble point.It is thus very crucial one to being accurately located in cable maintenance for Method of Cable Trouble Point
Content directly determines overhaul efficiency.
At present, it although the fixed point apparatus type for power cable fault detection is various, has some disadvantages：Human nature
Change that design is insufficient, function is single, not smart enough etc..For example, during movement of visiting popping one's head in, external noise can give operator
The ear of member brings stimulation to injure, and prior art detection device is unable to effective protection operating personnel.And many detection devices use
Method is numerous and diverse, some functions need operator to be manually set in use, it is impossible to the action signal of automatic identification operator,
Due to not smart enough, so as to bring many troubles to operator.
Invention content
In view of the above shortcomings of the prior art, the object of the present invention is to provide a kind of precision is high, portable, intelligent, people
Property automatic close sound and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting.
To solve problems of the prior art, the specific technical solution of use is：
It is a kind of it is automatic close sound and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting, including sound magnetic-synchro fixed point module,
It is automatic to close sound module and intelligent background noise reduction resetting module；The automatic output terminal for closing sound module pinpoints module with sound magnetic-synchro
Electrical connection, the intelligence background noise reduction resetting module pinpoint that module is two-way to be electrically connected with sound magnetic-synchro；
The sound magnetic-synchro pinpoints module by DSP (digital signal processor) processors and its peripheral circuit
It forms, the dsp processor and its peripheral circuit are used for sound and magnetic field signal that detection cable trouble point is discharged, using EMD
Filtering technique, analysis sound magnetic-synchro transmission time difference, and exported after carrying out intelligent background noise reduction to voice signal；
The automatic sound module of closing realizes what audio signal exported equipped with capacitive touch switch by capacitive touch switch
Automatically sound function is closed；
The intelligence background noise reduction resetting module is equipped with acceleration transducer, is moved by acceleration transducer detecting instrument
It moves and realizes that background noise reduction is reset.
Preferred scheme, the present invention closes sound automatically and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting has further included magnetic
The processing circuit and Audio Signal Processing of the processing circuit of field sensor and magnetic field sensor, sound transducer and sound transducer
And output module, the input terminal of the magnetic field sensor and processing circuit are connected with external magnetic field signal, the sound sensor
The input terminal of device and processing circuit is connected with external voice signal, the magnetic field sensor and processing circuit and sound transducer
And processing circuit is connected with sound magnetic-synchro fixed point module, the output terminal and Audio Signal Processing of the sound magnetic-synchro fixed point module
And output module is connected.
The magnetic field sensor and processing circuit are used for the Magnetic Field of fault inspecting discharge signal, active by low pass
It is AD converted after filter filtering, transformation result is transferred to dsp processor by 24 standard IIS interfaces.
The sound transducer and processing circuit include audio sensor, and the audio sensor uses analog pickup
Device is AD converted by audio collection chip, dsp processor is transferred in a manner of IIS.
The dsp processor is for data acquisition, processing, output and the function of visualization display.
Further preferred scheme, the present invention closes sound automatically and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting also wraps
External headphones and operation handle are included, external headphones are connected with the Audio Signal Processing and output module, when operator's hand contacts
During to operation handle, external headphones are automatically into closing sound-like state.
Scheme still further preferably, the present invention close the sound magnetic-synchro fixed point apparatus of sound and intelligent background noise reduction resetting also automatically
Including instrument panel, the instrument panel, which is equipped with, to be closed sound and enables button and close sound and forbids button, by switching close sound enable by
Button forbids button, it can be achieved that external headphones, which enter to close sound-like state or exit, closes sound-like state with sound is closed.
Scheme still more preferably, the present invention close the sound magnetic-synchro fixed point apparatus of sound and intelligent background noise reduction resetting also automatically
Including visiting ground microphone, the acceleration transducer visited on ground microphone and the intelligent background noise reduction resetting module is and sound
Magnetic-synchro fixed point module electrical connection, after acceleration transducer detects the microphone movement of spy ground, notice sound magnetic-synchro fixed point mould
Block resurveys ambient noise, realizes intelligent ambient noise noise reduction resetting, improves the sensitivity of detecting instrument and detection essence
Degree.
By using said program, a kind of automatic sound magnetic-synchro fixed point closed sound and reset with intelligent background noise reduction of the invention
Instrument compared with prior art, has technical effect that：
(1), sound module is closed, and the automatic sound module of closing is detected equipped with capacitive touch switch as behaviour equipped with automatic
When author's hand touches instrument handle, the earphone of fixed point apparatus will be automatically into sound-like state be closed, this function can be grasped with effective protection
Author is avoided when operator moves and visits ground microphone, and the additional noise that by visiting microphone movement is brought is to operator's ear
Piece stimulation injury, therefore effective protection operator, designs more hommization.
(2), instrument panel, which is equipped with to close sound and enable button and close sound, forbids button, when encountering chance failure, can also lead to
It crosses switching and closes sound and enable button and close sound and forbid button, realize that external headphones enter to close sound-like state or exit and close sound-like state, it is convenient
User uses, and use is more secure.
(3), the intelligent background noise reduction resetting module is equipped with acceleration transducer, is detected and visited by acceleration transducer
After ground microphone movement, ambient noise is resurveyed, intelligent ambient noise noise reduction resetting is realized, improves the spirit of detecting instrument
Sensitivity and accuracy of detection.
Description of the drawings
Fig. 1 is a kind of automatic functional block diagram for closing sound and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting of the present invention；
Fig. 2 is that a kind of automatic sound magnetic-synchro for closing sound and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting of the present invention is determined
The structure diagram of point module.
Specific embodiment
Understand to make the object, technical solutions and advantages of the present invention clearer, with reference to specific example, to the present invention
It is further described.It should be understood that these descriptions are merely illustrative, and it is not intended to limit the scope of the present invention.In addition,
In illustrating below, the description to known features and technology is omitted, to avoid idea of the invention is unnecessarily obscured.
As depicted in figs. 1 and 2,
It is a kind of it is automatic close sound and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting, including sound magnetic-synchro fixed point module,
It is automatic to close sound module and intelligent background noise reduction resetting module.The automatic output terminal for closing sound module pinpoints module with sound magnetic-synchro
Electrical connection, the intelligence background noise reduction resetting module pinpoint that module is two-way to be electrically connected with sound magnetic-synchro.
The sound magnetic-synchro fixed point module is made of dsp processor and its peripheral circuit, and the dsp processor is
Blackfin dsp processors, the dsp processor and its peripheral circuit are used for the sound and magnetic of detection cable trouble point electric discharge
Field signal, using EMD filtering techniques, analysis sound magnetic-synchro transmission time difference, and after carrying out intelligent background noise reduction to voice signal
Output；The automatic sound module of closing, using capacitive touch switch, is detected when operator's hand contacts equipped with capacitive touch switch
During to instrument handle, the earphone of fixed point apparatus will be automatically into sound-like state be closed, this function can avoid working as with effective protection operator
When ground microphone is visited in operator's movement, by visiting microphone moves the additional noise brought, and in addition the function can pass through instrument
The button of panel is enabled and is forbidden, and is more convenient user and is used.The intelligence background noise reduction resetting module is equipped with acceleration sensing
Device is detected after visiting ground microphone movement by acceleration transducer, resurveys ambient noise, realizes intelligent ambient noise drop
It makes an uproar resetting, improves sensitivity and the accuracy of detection of instrument.
The present invention closes sound automatically and the sound magnetic-synchro fixed point apparatus of intelligent background noise reduction resetting further includes magnetic field sensor and magnetic
The processing circuit of field sensor, the processing circuit of sound transducer and sound transducer and Audio Signal Processing and output module,
The input terminal of the magnetic field sensor and processing circuit is connected with external magnetic field signal, the sound transducer and processing circuit
Input terminal be connected with external voice signal, the magnetic field sensor and processing circuit and sound transducer and processing circuit are equal
It is connected with sound magnetic-synchro fixed point module, the sound magnetic-synchro fixed point output terminal of module and Audio Signal Processing and output module phase
Even.
Wherein, the principle of each circuit and Functional Design are as follows：
Core processor uses the high-performance Blackfin series A DSP-BF525 chips of AD companies of the U.S., the chip dominant frequency
Height integrates a variety of external interfaces.Its major function is controlled to visiting analog signal AD conversion, the number that ground microphone sensor detects
Word signal processing plays filtered acoustic information, setting type cable failure positioning detection mode, detection parameters is configured, is graphical
Display detection process is as a result, realizing the intelligence of position determination of fault detection and visualizing, user-friendly and cable fault is determined
Point.
Sound transducer and processing circuit：Audio sensor uses analog sound pick-up, by audio collection chip
PCM1803A is AD converted, and dsp chip is transferred in a manner of IIS.To DSP, treated that digital audio and video signals are put by audio
Big device MAX9850 chips carry out DA conversions, are played finally by stereophone.
Magnetic field sensor and processing circuit：Using self-winding coil, the Magnetic Field of fault inspecting discharge signal passes through
It is AD converted again after low-pass active filter filtering, transformation result is transferred to dsp processor by 24 standard IIS interfaces.
Capacitive touch switch closes sound module automatically：It detects the touch information of operator in real time by ST01B chips, detects
After audio output is automatically closed.
Acceleration transducer background noise reduction resets module：It is detected using three number of axle word acceleration sensor chip ADXL345
After being moved to instrument, ambient noise is reset automatically so that applies simpler convenience, testing result is more accurately and reliably.
The foregoing is merely illustrative of the preferred embodiments of the present invention, the protection domain being not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification for being made, is all contained within protection scope of the present invention equivalent replacement.
Claims (8)
1. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction, which is characterized in that it is same that it includes sound magnetic
One-step site module closes sound module and intelligent background noise reduction resetting module automatically；The automatic output terminal for closing sound module and sound magnetic
It is electrically connected with one-step site module, the intelligence background noise reduction resetting module pinpoints that module is two-way to be electrically connected with sound magnetic-synchro；
The sound magnetic-synchro fixed point module is made of dsp processor and its peripheral circuit, the dsp processor and its peripheral circuit
For the sound and magnetic field signal of the electric discharge of detection cable trouble point, using EMD filtering techniques, analysis sound magnetic-synchro transmission time
Difference, and exported after carrying out intelligent background noise reduction to voice signal；
The automatic sound module of closing realizes that audio signal exports automatic equipped with capacitive touch switch by capacitive touch switch
Close sound function；
The intelligence background noise reduction resetting module is equipped with acceleration transducer, by the movement of acceleration transducer detecting instrument simultaneously
Realize the resetting of background noise reduction.
2. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction according to claim 1, special
Sign is, further includes the processing of the processing circuit of magnetic field sensor and magnetic field sensor, sound transducer and sound transducer
The input terminal of circuit and Audio Signal Processing and output module, the magnetic field sensor and processing circuit and external magnetic field signal
It is connected, the input terminal of the sound transducer and processing circuit is connected with external voice signal, the magnetic field sensor and place
Reason circuit and sound transducer and processing circuit are connected with sound magnetic-synchro fixed point module, and the sound magnetic-synchro pinpoints the defeated of module
Outlet is connected with Audio Signal Processing and output module.
3. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction according to claim 2, special
Sign is, the magnetic field sensor and processing circuit are used for the Magnetic Field of fault inspecting discharge signal, active by low pass
It is AD converted after filter filtering, transformation result is transferred to dsp processor by 24 standard IIS interfaces.
4. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction according to claim 2, special
Sign is that the sound transducer and processing circuit include audio sensor, and the audio sensor uses analog pickup
Device is AD converted by audio collection chip, dsp processor is transferred in a manner of IIS.
5. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction according to claim 1, special
Sign is that the dsp processor is for data acquisition, processing, output and the function of visualization display.
6. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction according to claim 2, special
Sign is, further includes external headphones and operation handle, and external headphones are connected with the Audio Signal Processing and output module, when
When operator's hand touches operation handle, external headphones are automatically into closing sound-like state.
7. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction according to claim 1, special
Sign is, further includes instrument panel, and the instrument panel, which is equipped with to close sound and enable button and close sound, forbids button, passes through switching
It closes sound and enables button and close sound and forbid button, it can be achieved that external headphones, which enter to close sound-like state or exit, closes sound-like state.
8. a kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction according to claim 1, special
Sign is, further includes spy ground microphone, the acceleration visited on ground microphone and the intelligent background noise reduction resetting module
Sensor is electrically connected with sound magnetic-synchro fixed point module, after acceleration transducer detects the microphone movement of spy ground, notice sound
Magnetic-synchro fixed point module resurveys ambient noise, realizes intelligent ambient noise noise reduction resetting.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510571108.0A CN105606953B (en) | 2015-09-09 | 2015-09-09 | A kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction |
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| CN201510571108.0A CN105606953B (en) | 2015-09-09 | 2015-09-09 | A kind of automatic sound magnetic-synchro fixed point apparatus for closing sound and being reset with intelligent background noise reduction |
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| CN105606953A CN105606953A (en) | 2016-05-25 |
| CN105606953B true CN105606953B (en) | 2018-06-29 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109655714B (en) * | 2019-01-22 | 2021-10-08 | 西安电子科技大学 | Double-sensor cable fault fixed-point detection system and method and cable detection platform |
| CN112363101A (en) * | 2020-11-13 | 2021-02-12 | 浙江咸亨创新产业中心有限公司 | Cable fault location instrument performance evaluation device and method |
| CN112684285A (en) * | 2020-12-11 | 2021-04-20 | 国网辽宁省电力有限公司抚顺供电公司 | Intelligent positioning device and positioning method for cable fault |
| CN113092947B (en) * | 2021-05-08 | 2022-04-19 | 北京潞电电气设备有限公司 | Method for automatically positioning cable fault point |
| CN117349597B (en) * | 2023-12-04 | 2024-02-20 | 探博士电气科技(杭州)有限公司 | Intelligent background noise reduction method for intelligent digital accurate pointing instrument |
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