CN113707161A - Method for playing partial discharge signal audio based on ZYNQ platform - Google Patents
Method for playing partial discharge signal audio based on ZYNQ platform Download PDFInfo
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
- G10L19/16—Vocoder architecture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1209—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using acoustic measurements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/16—Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
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Abstract
The invention discloses a method for playing partial discharge signal audio based on a ZYNQ platform, which comprises the following steps: firstly, an ultrasonic sensor inputs collected sound signals to an audio conversion chip after passing through an amplifying circuit; secondly, the audio conversion chip performs analog-to-digital conversion on the received sound signal to generate a digital signal and outputs the digital signal to a PL end of the ZYNQ platform; thirdly, the PL end firstly carries out noise reduction and sound amplification processing on the received digital signal through an algorithm processing module, then converts the digital signal into serial data which accords with an I2S protocol and outputs the serial data to a stereo audio codec; and fourthly, carrying out digital audio processing on the received serial data by the stereo audio codec, and playing through an earphone to realize partial discharge signal monitoring. The method and the device can monitor the sound characteristic of the abnormal signal by the earphone, carry out preliminary judgment according to the sound characteristic to eliminate interference, are suitable for various electrified detection scenes, have strong practicability and reduce the detection cost.
Description
Technical Field
The invention belongs to the technical field of ultrasonic partial discharge detection and digital audio, and particularly relates to a method for playing partial discharge signal audio based on a ZYNQ platform.
Background
In recent years, with the development of power grids, live test becomes more and more important and becomes an important guarantee means for safe operation of the power grids. Partial discharge detection of operating electrical equipment is an important component of power grid maintenance. When the partial discharge of the power equipment occurs, the physical phenomena of acousto-optic electric heating magnetism and the like can be generated. The sound is ultrasonic wave which is sound wave above 20kHz and can not be heard by human ears, and the sound is transmitted to the surroundings in a spherical wave mode by taking a sound source as a center; the ultrasonic wave is a mechanical wave and is not influenced by an electromagnetic environment. The method for judging the existence and the positioning of the partial discharge by receiving the ultrasonic signals is easier to find the partial discharge fault in priority than an infrared camera and an ultraviolet camera, and because the partial discharge usually has physical signals such as thermophotomagnetism after the ultrasonic is generated by vibration before the partial discharge occurs. Therefore, various technical solutions for detecting partial discharge based on ultrasonic waves have been proposed, for example, chinese patent application No. CN201810522322.0 discloses a portable partial discharge detector based on ultrasonic waves, which includes an ultrasonic wave collecting device and a host, wherein the ultrasonic wave collecting device is connected to a fixing frame through a rotating shaft, and the rotating shaft is driven by a motor to rotate; the ultrasonic acquisition equipment comprises an ultrasonic acquisition circuit for acquiring ultrasonic signals; the host is used for controlling and processing, a map module is arranged in the host, a monitoring power grid point circuit diagram is arranged in the map module, the current detection position is determined through GPS real-time positioning, and when electric leakage is detected, the number of the discharge point is marked and position information is recorded. Also, for example, chinese patent application No. 202010250704.X discloses an online partial discharge monitoring system and an implementation method thereof, including a background monitoring system, a data acquisition device, an ultrasonic partial discharge monitoring device, and a real-time data digital-to-analog conversion module, where the background monitoring system is respectively connected to a plurality of data acquisition devices, each data acquisition device is connected to an ultrasonic partial discharge monitoring device in a wireless communication or field bus manner, and the real-time signal is converted from digital to analog and amplified in power by a computer of the background monitoring system and then played by a speaker or an earphone equipped in the background monitoring system to restore the audible sound to human ears, thereby achieving the purpose of continuously monitoring whether the device actually has partial discharge exceeding the standard or not, and enabling engineers to monitor the partial discharge signal in real time in a sound monitoring manner, the method helps engineers to further determine whether partial discharge occurs and the severity, and reduces the possibility of false alarm and false negative alarm.
With the development of national economy, the scale of a power grid is rapidly enlarged, the workload of regular maintenance is greatly increased, and the maintenance personnel are in short supply and have more and more difficult power failure. The conventional ultrasonic partial discharge instrument is adopted to detect in a sound listening mode, the heard sound is large and unclear in noise background, judgment can not be performed quickly according to sound characteristics, the time consumption is long, the detection efficiency is low, and the detection quality is low.
Disclosure of Invention
The invention aims to provide a method for playing partial discharge signal audio based on a ZYNQ platform, aiming at the defects in the prior art. The method can monitor the sound characteristics of the abnormal signals by the earphone, carries out preliminary judgment according to the sound characteristics to eliminate interference, is suitable for various electrified detection scenes, has strong practicability and reduces the detection cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for playing partial discharge signal audio based on a ZYNQ platform comprises the following steps:
firstly, an ultrasonic sensor inputs collected sound signals to an audio conversion chip after passing through an amplifying circuit;
secondly, the audio conversion chip performs analog-to-digital conversion on the received sound signal to generate a digital signal and outputs the digital signal to a PL end of the ZYNQ platform;
thirdly, the PL end firstly carries out noise reduction and sound amplification processing on the received digital signal through an algorithm processing module, then converts the digital signal into serial data which accords with an I2S protocol and outputs the serial data to a stereo audio codec;
and fourthly, carrying out digital audio processing on the received serial data by the stereo audio codec, and playing through an earphone to realize partial discharge signal monitoring.
The invention further describes that the audio conversion chip is a complete analog-to-digital converter, and has the functions of sampling, analog-to-digital conversion and anti-aliasing filtering, and is used for converting an analog audio signal into a digital signal.
The invention further describes that the ZYNQ platform comprises a PS end and a PL end; and the PL end is provided with an I2S converter for converting the received digital signal into serial data conforming to an I2S protocol.
The invention further provides that the stereo audio codec has digital audio processing functions, can record and playback stereo sound, and supports digital volume control.
The invention further explains that the process of playing audio and storing the recording by the stereo audio codec is realized according to the following logic steps:
1) powering up and initializing a system;
2) the ultrasonic sensor collects sound signals and starts to play audio;
3) the PS end of the ZYNQ platform adjusts the volume of the played audio;
4) a PS end of the ZYNQ platform issues a recording starting instruction to a PL end, the PL end carries out setting after detecting the instruction sent by the PS end, and the PS end carries out storage of the recording file;
5) and the PS end of the ZYNQ platform issues a recording stopping instruction to the PL end, the PL sets after detecting the instruction sent by the PS end, and the PS end stops recording and plays the audio again.
The invention has the advantages that:
can realize monitoring the sound characteristic of abnormal signal with the earphone, carry out preliminary judgement according to the characteristic of sound and get rid of the interference, be applicable to multiple electrified detection scene, the practicality is strong, has reduced the detection cost.
Drawings
Fig. 1 is an overall block diagram of a system according to an embodiment of the present invention.
FIG. 2 is a logic flow diagram of playing audio and saving a recording according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example (b):
as shown in fig. 1 and fig. 2, a method for playing an audio frequency of an partial discharge signal based on a ZYNQ platform includes the following steps:
firstly, an ultrasonic sensor inputs collected sound signals to an audio conversion chip after passing through an amplifying circuit;
secondly, the audio conversion chip performs analog-to-digital conversion on the received sound signal to generate a digital signal and outputs the digital signal to a PL end of the ZYNQ platform;
thirdly, the PL end firstly carries out noise reduction and sound amplification processing on the received digital signal through an algorithm processing module, then converts the digital signal into serial data which accords with an I2S protocol and outputs the serial data to a stereo audio codec;
and fourthly, carrying out digital audio processing on the received serial data by the stereo audio codec, and playing through an earphone to realize partial discharge signal monitoring.
The ultrasonic sensor converts ultrasonic signals into electric signals, further amplifies the electric signals and transmits the electric signals to the audio conversion chip, so that the purpose of collecting partial discharge sound is achieved;
the audio conversion chip is a complete analog-to-digital converter, has the functions of sampling, analog-to-digital conversion and anti-aliasing filtering, and is used for converting an analog audio signal into a digital signal.
The ZYNQ platform comprises a PS end and a PL end; and the PL end is provided with an I2S converter for converting the received digital signal into serial data conforming to an I2S protocol.
The stereo audio codec has a digital audio processing function, can record and playback stereo sound, and supports digital volume control.
The process of playing audio and storing the recording by the stereo audio codec is realized according to the following logic steps:
1) powering up and initializing a system;
2) the ultrasonic sensor collects sound signals and starts to play audio;
3) the PS end of the ZYNQ platform adjusts the volume of the played audio;
4) a PS end of the ZYNQ platform issues a recording starting instruction to a PL end, the PL end carries out setting after detecting the instruction sent by the PS end, and the PS end carries out storage of the recording file;
5) and the PS end of the ZYNQ platform issues a recording stopping instruction to the PL end, the PL sets after detecting the instruction sent by the PS end, and the PS end stops recording and plays the audio again.
It should be understood that the above-described embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the practice of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description; this is not necessary, nor exhaustive, of all embodiments; and obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (5)
1. A method for playing partial discharge signal audio based on a ZYNQ platform is characterized by comprising the following steps:
firstly, an ultrasonic sensor inputs collected sound signals to an audio conversion chip after passing through an amplifying circuit;
secondly, the audio conversion chip performs analog-to-digital conversion on the received sound signal to generate a digital signal and outputs the digital signal to a PL end of the ZYNQ platform;
thirdly, the PL end firstly carries out noise reduction and sound amplification processing on the received digital signal through an algorithm processing module, then converts the digital signal into serial data which accords with an I2S protocol and outputs the serial data to a stereo audio codec;
and fourthly, carrying out digital audio processing on the received serial data by the stereo audio codec, and playing through an earphone to realize partial discharge signal monitoring.
2. The method of claim 1 for playing partial discharge signal audio based on the ZYNQ platform, wherein: the audio conversion chip is a complete analog-to-digital converter, has the functions of sampling, analog-to-digital conversion and anti-aliasing filtering, and is used for converting an analog audio signal into a digital signal.
3. The method of claim 2 for playing the audio of the partial discharge signal based on the ZYNQ platform, wherein: the ZYNQ platform comprises a PS end and a PL end; and the PL end is provided with an I2S converter for converting the received digital signal into serial data conforming to an I2S protocol.
4. The method of claim 3 for playing the audio of the partial discharge signal based on the ZYNQ platform, wherein: the stereo audio codec has a digital audio processing function, can record and playback stereo sound, and supports digital volume control.
5. The method of claim 4 for playing partial discharge signal audio based on the ZYNQ platform, wherein: the process of playing audio and storing the recording by the stereo audio codec is realized according to the following logic steps:
1) powering up and initializing a system;
2) the ultrasonic sensor collects sound signals and starts to play audio;
3) the PS end of the ZYNQ platform adjusts the volume of the played audio;
4) a PS end of the ZYNQ platform issues a recording starting instruction to a PL end, the PL end carries out setting after detecting the instruction sent by the PS end, and the PS end carries out storage of the recording file;
5) and the PS end of the ZYNQ platform issues a recording stopping instruction to the PL end, the PL sets after detecting the instruction sent by the PS end, and the PS end stops recording and plays the audio again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108466.XA CN113707161A (en) | 2021-09-22 | 2021-09-22 | Method for playing partial discharge signal audio based on ZYNQ platform |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111108466.XA CN113707161A (en) | 2021-09-22 | 2021-09-22 | Method for playing partial discharge signal audio based on ZYNQ platform |
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| CN107391080A (en) * | 2017-07-25 | 2017-11-24 | 青岛海信电器股份有限公司 | Master chip, ADAS based on ZYNQ and the method using its progress voice message |
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| CN111398751A (en) * | 2020-04-01 | 2020-07-10 | 珠海黑石电气自动化科技有限公司 | On-line partial discharge monitoring system and implementation method |
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2021
- 2021-09-22 CN CN202111108466.XA patent/CN113707161A/en active Pending
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| CN110623820A (en) * | 2019-07-15 | 2019-12-31 | 电子科技大学 | Blind device is led to wearable intelligence |
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| CN111398751A (en) * | 2020-04-01 | 2020-07-10 | 珠海黑石电气自动化科技有限公司 | On-line partial discharge monitoring system and implementation method |
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