CN105207722A - Intelligent anti-interference system and anti-interference method thereof - Google Patents
Intelligent anti-interference system and anti-interference method thereof Download PDFInfo
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Abstract
The invention discloses an intelligent anti-interference system and an anti-interference method thereof. The intelligent anti-interference system comprises an intelligent anti-interference terminal and audio equipment, and the audio equipment is connected with the intelligent anti-interference terminal. The intelligent anti-interference terminal comprises a detection module, a master control single-chip microcomputer module and a two-path selector module which are connected in sequence. The detection module is used for detecting the to-ground resistance of the audio equipment, converting the detected resistance into a corresponding voltage value by utilizing a reference voltage, and outputting the voltage value to the master control single-chip microcomputer module. The master control single-chip microcomputer module is used for converting the voltage value into a digital signal, judging whether the output of the audio equipment is common-mode output or differential-mode output, opening the two-path selector module according to the judgment result, and outputting a corresponding control command to the two-path selector module. The two-path selector module is used for starting a corresponding noise elimination circuit to reduce and eliminate the noise of an audio signal according to the control command input by the master control single-chip microcomputer module. Therefore, the tone quality is greatly improved.
Description
Technical field
The present invention relates to technical field of electronic products, particularly relate to a kind of intelligent jamproof system and anti-interference method thereof.
Background technology
In the modern life, electronic product intellectuality has become the main trend of industry development, the end products such as the networking of smart mobile phone, Smart Home, panel computer, car, intelligence wearing get more and more, use more and more frequent, user is usually by using the Bluetooth function in intelligent terminal to carry out mutual transmission data, or the broadcasting being controlled the song of bluetooth equipment by the standard agreement that bluetooth provides is suspended and changes song, or is connected by cable.And due to the mutual crosstalk of electrical network, wireless network and various smart electronics product, produce audio disturbances.
In the prior art, because different electronic products is different according to self character, the audio frequency way of output of employing is roughly divided into differential mode output and exports with common mode, and grounded part is also divided into floating ground, single-point grounding, multipoint earthing, mixing ground connection.After the voice frequency terminal of prior art is connected with the said equipment, because the earth point of input adopts fixing single-point grounding, cause the electronic equipment that input impedance cannot be compatible all, when these equipment are applied to identical electrical network, will High-frequency Interference be produced.The demand of people to smart electronics product cannot be met.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of intelligent jamproof system and anti-interference method thereof, be intended to solve existing voice frequency terminal and electronic equipment adopts fixing single-point grounding due to the earth point of input, cause input impedance cannot compatible all electronic equipments and there is the technical problem of High-frequency Interference.
Technical scheme provided by the invention is: a kind of intelligent jamproof system, comprise intelligent anti-interference terminal and audio frequency apparatus, described audio frequency apparatus is connected with the anti-interference terminal of intelligence, the anti-interference terminal of described intelligence comprises the detection module, main control singlechip module and the two-way selector module that connect successively, the impedance relatively that described detection module exists for detecting audio frequency apparatus, adopt reference voltage to be corresponding magnitude of voltage by the impedance conversion detected, and magnitude of voltage is outputted to main control singlechip module; Described main control singlechip module is used for magnitude of voltage to be converted into digital signal, and judge that audio frequency apparatus is that common mode exports or differential mode exports, two-way selector module is opened according to judged result, and exporting corresponding control command to two-way selector module, described two-way selector module is used for starting corresponding noise suicide circuit according to the control command of main control singlechip module input and carries out noise reduction and denoising Processing to audio signal.
Technical scheme of the present invention also comprises: the anti-interference terminal of described intelligence also comprises signal amplification module, described signal amplification module is connected with two-way selector module, for to the laggard line output of audio signal pre-amplification after denoising Processing, and enter battery saving mode according to the power-saving control instruction that main control singlechip module sends.
Technical scheme of the present invention also comprises: the anti-interference terminal of described intelligence also comprises noise isolation module, described noise isolation module is connected with detection module and two-way selector module respectively, the audio signal that described detection module audio reception equipment exports, and export the audio signal received to noise isolation module, described noise isolation module is for receiving the audio signal of detection module input, the input of audio frequency apparatus and the anti-interference terminal of intelligence are carried out isolation processing, and audio signal is outputted to the process of two-way selector module Awaiting Triage.
Technical scheme of the present invention also comprises: the anti-interference terminal of described intelligence also comprises efficiency detection module, described efficiency detection module respectively with two-way selector module and main control singlechip model calling, for amplifying the audio signal after denoising Processing and exporting main control singlechip module to after changing into control signal, described main control singlechip module judges whether to enter battery saving mode according to energy efficiency state, and sends power-saving control instruction according to judged result to described signal amplification module.
Technical scheme of the present invention also comprises: described two-way selector module also comprises signal storage unit, common-mode noise arrester unit and differential mode noise arrester unit, described signal storage unit is connected with common-mode noise arrester unit and differential mode noise arrester unit respectively, described common-mode noise arrester unit is connected with efficiency detection module and signal amplification module respectively with differential mode noise arrester unit
The audio signal that described signal storage unit exports for storing noise isolation module;
Described common-mode noise arrester unit is used for utilizing diode unilateal conduction characteristic and directivity impedance operator and electric capacity to form filter circuit when receiving common-mode noise and eliminating control command, noise reduction and stress release treatment process are carried out to the audio signal in signal storage unit, and the audio signal after denoising Processing is outputted to efficiency detection module and signal amplification module respectively;
The noise that the electromagnetic disturbance that described differential mode noise arrester unit is used for utilizing differential mode circuit to be produced by electrical network in the audio signal in signal storage unit when receiving differential mode noise and eliminating control command is propagated along power line suppresses, by comparing calculating, obtain noise voltage value, Ripple Suppression, amplifier common mode inhibit feature is utilized to abate the noise, again through filter by unwanted signal filtering, and the audio signal after denoising Processing is outputted to efficiency detection module and signal amplification module respectively.
Technical scheme of the present invention also comprises: the anti-interference terminal of described intelligence comprises audio amplifier, intelligence dresses product or wireless sound box, and described audio frequency apparatus comprises that sound equipment, home appliance are interconnected, communication apparatus, mobile phone, panel computer, PC, desk lamp or audio amplifier.
Another technical scheme provided by the invention is: a kind of anti-interference method of intelligent jamproof system, comprises the following steps:
Step a: the impedance relatively being detected audio frequency apparatus existence by detection module, is adopted reference voltage to be corresponding magnitude of voltage by the impedance conversion detected, and magnitude of voltage is outputted to main control singlechip module;
Step b: the magnitude of voltage being received detection module output by main control singlechip module, magnitude of voltage is converted into digital signal and judges that audio frequency apparatus is that common mode exports or differential mode exports, open two-way selector module according to judged result, and export corresponding control command to two-way selector module;
Step c: by two-way selector module control command, and the noise suicide circuit corresponding according to control command startup carries out noise reduction and denoising Processing to audio signal.
Technical scheme of the present invention also comprises: described step a also comprises: the audio signal exported by detection module audio reception equipment, and export the audio signal received to noise isolation module, the audio signal of detection module input is received by described noise isolation module, and after the input of audio frequency apparatus and the anti-interference terminal of intelligence are carried out isolation processing, audio signal is outputted to two-way selector module.
Technical scheme of the present invention also comprises: described step c specifically comprises:
Step c1: receive control command by two-way selector module, and judge that this order is that common-mode noise eliminates control command or differential mode noise eliminates control command, if common-mode noise eliminates control command, perform step c2; If differential mode noise eliminates control command, perform step c3;
Step c2: start common-mode noise arrester unit, utilize diode unilateal conduction characteristic and directivity impedance operator and electric capacity to form filter circuit, noise reduction and stress release treatment process are carried out to the audio signal that two-way selector module stores, and performs step c4;
Step c3: start differential mode noise arrester unit, the noise that the electromagnetic disturbance utilizing differential mode circuit to be produced by electrical network in the audio signal in signal storage unit is propagated along power line suppresses, by comparing calculating, obtain noise voltage value, Ripple Suppression, amplifier common mode inhibit feature is utilized to abate the noise, then through filter by unwanted signal filtering;
Step c4: the audio signal after denoising Processing is outputted to signal amplification module, by signal amplification module by the laggard line output of audio signal pre-amplification after denoising Processing.
Technical scheme of the present invention also comprises: described step c4 also comprises: the audio signal after denoising Processing is outputted to efficiency detection module, by efficiency detection module the audio signal after denoising Processing amplified and export main control singlechip module to after changing into control signal, described main control singlechip module judges whether to enter battery saving mode according to energy efficiency state, and sending power-saving control instruction according to judged result to signal amplification module, this power-saving control instruction of described signal amplification module enters battery saving mode.
Technical scheme tool of the present invention has the following advantages or beneficial effect: the intelligent jamproof system of the embodiment of the present invention and anti-interference method thereof are by detecting the earth impedance size of audio frequency apparatus, the earthing mode of audio frequency apparatus is judged according to impedance, according to earthing mode start different noise suicide circuits to audio signal abate the noise process after export again, the interference that the electrical potential difference eliminating the different earth point of traditional grid equipment causes, eliminate as different acoustic, home appliance is interconnected, communication apparatus, mobile phone, the devices interconnect equipment of wireless network, Apple Computers are connected with universal PC is interconnected the noise jamming caused, thus make equipment obtain the signal of real low distortion, substantially increase tonequality, and be conducive to saving energy consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of the intelligent jamproof system of the embodiment of the present invention;
Fig. 2 is the flow chart of the anti-interference method of the intelligent jamproof system of the embodiment of the present invention.
Embodiment
The invention provides a kind of intelligent jamproof system, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Referring to Fig. 1, is the structural representation of the intelligent jamproof system of the embodiment of the present invention.The intelligent jamproof system of the embodiment of the present invention comprises intelligent anti-interference terminal 100 and audio frequency apparatus 200, audio frequency apparatus 200 is connected with the anti-interference terminal 100 of intelligence, the anti-interference terminal 100 of intelligence specifically comprises detection module 101, noise isolation module 102, main control singlechip module 103, two-way selector module 104, efficiency detection module 105 and signal amplification module 106, wherein
Detection module 101 is connected with noise isolation module 102 and main control singlechip module 103 respectively, for the audio signal that audio reception equipment 200 exports, and the audio signal received is exported to the process of noise isolation module 102 products for further; Simultaneously, detection module 101 detects the impedance of relatively (abbreviation between phase line and ground wire) that audio frequency apparatus 200 exists, adopt reference voltage to be corresponding magnitude of voltage by the impedance conversion detected, and magnitude of voltage is outputted to main control singlechip module 103;
Noise isolation module 102 is connected with two-way selector module 104, for receiving the audio signal that detection module 101 inputs, and the input of audio frequency apparatus 200 and the anti-interference terminal 100 of intelligence are carried out isolation processing, avoid the mutual crosstalk that the anti-matching problem of the master between two connection devices causes, and audio signal is outputted to two-way selector module 104, Awaiting Triage process;
Main control singlechip module 103 is connected with two-way selector module 104 and signal amplification module 106 respectively, for receiving the magnitude of voltage that detection module 101 exports, utilize inner ADC (many A/D converters) that magnitude of voltage is converted into digital signal and after accurate Calculation, judge that audio frequency apparatus 200 is that common mode exports or differential mode exports, open two-way selector module 104 according to judged result, and export corresponding control command to two-way selector module 104; Wherein, audio frequency apparatus 200 is that common mode exports or the judgment mode that differential mode exports is: owing to there is different impedances from ground connection with floating, if reference resistance now is over the ground very low, can judge that audio frequency apparatus 200 is for ground connection, be common mode and export; In like manner, if impedance now is over the ground very large, can judge that audio frequency apparatus 200 is for floating ground, is differential mode and exports; The control command that main control singlechip module 103 exports is specially common-mode noise and eliminates control command and differential mode noise elimination control command;
The control command that two-way selector module 104 exports for the audio signal and main control singlechip module 103 receiving noise isolation module 102 output, and the noise suicide circuit corresponding according to control command startup carries out corresponding noise reduction and denoising Processing to audio signal; Particularly, two-way selector module 104 comprises signal storage unit 107, common-mode noise arrester unit 108 and differential mode noise arrester unit 109, signal storage unit 107 is connected with common-mode noise arrester unit 108 and differential mode noise arrester unit 109 respectively, common-mode noise arrester unit 108 is connected with efficiency detection module 105 and signal amplification module 106 respectively with differential mode noise arrester unit 109
The audio signal that signal storage unit 107 exports for storing noise isolation module 102;
Common-mode noise arrester unit 108 is for utilizing diode unilateal conduction characteristic and directivity impedance operator and electric capacity to form filter circuit when receiving common-mode noise and eliminating control command, noise reduction and stress release treatment process are carried out to the audio signal in signal storage unit 107, and the audio signal after denoising Processing is outputted to efficiency detection module 105 and signal amplification module 106 respectively;
The noise that differential mode noise arrester unit 109 is propagated along power line for the electromagnetic disturbance utilizing differential mode circuit to be produced by electrical network in the audio signal in signal storage unit 107 when receiving differential mode noise and eliminating control command suppresses, by comparing calculating, obtain noise voltage value, Ripple Suppression, amplifier common mode inhibit feature is utilized to abate the noise, again through filter by unwanted signal filtering, and the audio signal after denoising Processing is outputted to efficiency detection module 105 and signal amplification module 106 respectively; Wherein, the noise-cancellation parameters of common-mode noise arrester unit 108 and differential mode noise arrester unit 109 can adjust according to practical application, to reach best matching effect.
Efficiency detection module 105 is connected with main control singlechip module 103, for amplifying the audio signal after common-mode noise arrester unit 108 and differential mode noise arrester unit 109 denoising Processing and exporting main control singlechip module 103 to after changing into control signal, main control singlechip module 103 judges whether to enter battery saving mode according to energy efficiency state, and sends power-saving control instruction according to judged result to signal amplification module;
Signal amplification module 106 for by the laggard line output of audio signal pre-amplification after common-mode noise arrester unit 108 and differential mode noise arrester unit 109 denoising Processing, and enters battery saving mode according to the power-saving control instruction that main control singlechip module sends; The interference that the electrical potential difference that this invention removes the different earth point of traditional grid equipment causes, eliminate as interconnected in different acoustic, home appliance, the devices interconnect equipment of communication apparatus, mobile phone, wireless network, Apple Computers and be connected with universal PC is interconnected the noise jamming caused, thus make equipment obtain the signal of real low distortion, substantially increase tonequality, and be conducive to saving energy consumption.
In embodiments of the present invention, intelligent anti-interference terminal 100 can be audio amplifier, intelligence dresses product or wireless sound box etc., and the type of audio frequency apparatus 200 comprises that sound equipment, home appliance are interconnected, communication apparatus, mobile phone, panel computer, PC, desk lamp or audio amplifier etc.
The embodiment provided in patent of the present invention, all application of the present invention are incorporated in an application in the anti-interference terminal of intelligence, namely only need to apply patented technology terminal equipment of the present invention, no matter connected equipment is common mode exports or differential mode output, can not produce noise when other audio-frequence player devices connected can be made to output to this intelligent terminal.Thus simplify complicated de-noising design of the prior art, substantially increase tonequality.
Referring to Fig. 2, is the flow chart of the anti-interference method of the intelligent jamproof system of the embodiment of the present invention.The intelligent jamproof system of the embodiment of the present invention comprises the anti-interference terminal of interconnective intelligence and audio frequency apparatus, and the anti-interference method of the intelligent jamproof system of the embodiment of the present invention comprises the following steps:
S1: the audio signal exported by detection module audio reception equipment, and export the audio signal received to noise isolation module, the process of products for further; Meanwhile, detect the impedance relatively that audio frequency apparatus exists, adopt reference voltage to be corresponding magnitude of voltage by the impedance conversion detected, and magnitude of voltage is outputted to main control singlechip module;
S2: the audio signal receiving detection module input, and the input of audio frequency apparatus and the anti-interference terminal of intelligence are carried out isolation processing, avoid the mutual crosstalk that the anti-matching problem of the master between two connection devices causes, and audio signal is outputted to two-way selector module, Awaiting Triage process;
S3: by two-way selector module received audio signal, and audio signal is stored;
S4: the magnitude of voltage being received detection module output by main control singlechip module, utilize inner ADC that magnitude of voltage is converted into digital signal and after accurate Calculation, judge that audio frequency apparatus is that common mode exports or differential mode exports, open two-way selector module according to judged result, and export corresponding control command to two-way selector module;
In step s 4 which, audio frequency apparatus is that common mode exports or the judgment mode that differential mode exports is: owing to there is different impedances from ground connection with floating, if reference resistance now is over the ground very low, can judge that audio frequency apparatus is ground connection, is common mode and exports; In like manner, if impedance now is over the ground very large, can judges that audio frequency apparatus is floating ground, be differential mode and export; The control command that main control singlechip module exports is specially common-mode noise and eliminates control command and differential mode noise elimination control command.
S5: receive control command by two-way selector module, and judge that this order is that common-mode noise eliminates control command or differential mode noise eliminates control command, if common-mode noise eliminates control command, perform step S6; If differential mode noise eliminates control command, perform step S7;
S6: start common-mode noise arrester unit, utilize diode unilateal conduction characteristic and directivity impedance operator and electric capacity to form filter circuit, noise reduction and stress release treatment process are carried out to the audio signal that two-way selector module stores, and performs step S8;
S7: start differential mode noise arrester unit, the noise that the electromagnetic disturbance utilizing differential mode circuit to be produced by electrical network in the audio signal in signal storage unit is propagated along power line suppresses, by comparing calculating, obtain noise voltage value, Ripple Suppression, amplifier common mode inhibit feature is utilized to abate the noise, then through filter by unwanted signal filtering;
S8: the audio signal after denoising Processing is outputted to respectively efficiency detection module and signal amplification module;
S9: by efficiency detection module the audio signal after denoising Processing amplified and export main control singlechip module to after changing into control signal, main control singlechip module judges whether to enter battery saving mode according to energy efficiency state, and sends power-saving control instruction according to judged result to signal amplification module;
S10: by signal amplification module by the laggard line output of audio signal pre-amplification after denoising Processing, and enter battery saving mode according to the power-saving control instruction that main control singlechip module sends.
The intelligent jamproof system of the embodiment of the present invention and anti-interference method thereof are by detecting the earth impedance size of audio frequency apparatus, the earthing mode of audio frequency apparatus is judged according to impedance, according to earthing mode start different noise suicide circuits to audio signal abate the noise process after export again, the interference that the electrical potential difference eliminating the different earth point of traditional grid equipment causes, eliminate as different acoustic, home appliance is interconnected, communication apparatus, mobile phone, the devices interconnect equipment of wireless network, Apple Computers are connected with universal PC is interconnected the noise jamming caused, thus make equipment obtain the signal of real low distortion, substantially increase tonequality, and be conducive to saving energy consumption.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an intelligent jamproof system, comprise intelligent anti-interference terminal and audio frequency apparatus, described audio frequency apparatus is connected with the anti-interference terminal of intelligence, it is characterized in that, the anti-interference terminal of described intelligence comprises the detection module, main control singlechip module and the two-way selector module that connect successively, the impedance relatively that described detection module exists for detecting audio frequency apparatus, adopts reference voltage to be corresponding magnitude of voltage by the impedance conversion detected, and magnitude of voltage is outputted to main control singlechip module; Described main control singlechip module is used for magnitude of voltage to be converted into digital signal, and judge that audio frequency apparatus is that common mode exports or differential mode exports, two-way selector module is opened according to judged result, and exporting corresponding control command to two-way selector module, described two-way selector module is used for starting corresponding noise suicide circuit according to the control command of main control singlechip module input and carries out noise reduction and denoising Processing to audio signal.
2. intelligent jamproof system according to claim 1, it is characterized in that, the anti-interference terminal of described intelligence also comprises signal amplification module, described signal amplification module is connected with main control singlechip module and two-way selector module respectively, for to the laggard line output of audio signal pre-amplification after denoising Processing, and enter battery saving mode according to the power-saving control instruction that main control singlechip module sends.
3. intelligent jamproof system according to claim 1, it is characterized in that, the anti-interference terminal of described intelligence also comprises noise isolation module, described noise isolation module is connected with detection module and two-way selector module respectively, the audio signal that described detection module audio reception equipment exports, and export the audio signal received to noise isolation module, described noise isolation module is for receiving the audio signal of detection module input, the input of audio frequency apparatus and the anti-interference terminal of intelligence are carried out isolation processing, and audio signal is outputted to the process of two-way selector module Awaiting Triage.
4. intelligent jamproof system according to claim 2, it is characterized in that, the anti-interference terminal of described intelligence also comprises efficiency detection module, described efficiency detection module respectively with two-way selector module and main control singlechip model calling, for amplifying the audio signal after denoising Processing and exporting main control singlechip module to after changing into control signal, described main control singlechip module judges whether to enter battery saving mode according to energy efficiency state, and sends power-saving control instruction according to judged result to described signal amplification module.
5. the intelligent jamproof system according to claim 1 or 2 or 3 or 4, it is characterized in that, described two-way selector module also comprises signal storage unit, common-mode noise arrester unit and differential mode noise arrester unit, described signal storage unit is connected with common-mode noise arrester unit and differential mode noise arrester unit respectively, described common-mode noise arrester unit is connected with efficiency detection module and signal amplification module respectively with differential mode noise arrester unit
The audio signal that described signal storage unit exports for storing noise isolation module;
Described common-mode noise arrester unit is used for utilizing diode unilateal conduction characteristic and directivity impedance operator and electric capacity to form filter circuit when receiving common-mode noise and eliminating control command, noise reduction and stress release treatment process are carried out to the audio signal in signal storage unit, and the audio signal after denoising Processing is outputted to efficiency detection module and signal amplification module respectively;
The noise that the electromagnetic disturbance that described differential mode noise arrester unit is used for utilizing differential mode circuit to be produced by electrical network in the audio signal in signal storage unit when receiving differential mode noise and eliminating control command is propagated along power line suppresses, by comparing calculating, obtain noise voltage value, Ripple Suppression, amplifier common mode inhibit feature is utilized to abate the noise, again through filter by unwanted signal filtering, and the audio signal after denoising Processing is outputted to efficiency detection module and signal amplification module respectively.
6. according to the intelligent jamproof system that claim 1 is stated, it is characterized in that, the anti-interference terminal of described intelligence comprises audio amplifier, intelligence dresses product or wireless sound box, and described audio frequency apparatus comprises that sound equipment, home appliance are interconnected, communication apparatus, mobile phone, panel computer, PC, desk lamp or audio amplifier.
7. an anti-interference method for intelligent jamproof system, is characterized in that, comprises the following steps:
Step a: the impedance relatively being detected audio frequency apparatus existence by detection module, is adopted reference voltage to be corresponding magnitude of voltage by the impedance conversion detected, and magnitude of voltage is outputted to main control singlechip module;
Step b: the magnitude of voltage being received detection module output by main control singlechip module, magnitude of voltage is converted into digital signal and judges that audio frequency apparatus is that common mode exports or differential mode exports, open two-way selector module according to judged result, and export corresponding control command to two-way selector module;
Step c: by two-way selector module control command, and the noise suicide circuit corresponding according to control command startup carries out noise reduction and denoising Processing to audio signal.
8. the anti-interference method of the intelligent jamproof system stated according to claim 7, it is characterized in that, described step a also comprises: the audio signal exported by detection module audio reception equipment, and export the audio signal received to noise isolation module, the audio signal of detection module input is received by described noise isolation module, and after the input of audio frequency apparatus and the anti-interference terminal of intelligence are carried out isolation processing, audio signal is outputted to two-way selector module.
9. the anti-interference method of the intelligent jamproof system stated according to claim 7, it is characterized in that, described step c specifically comprises:
Step c1: receive control command by two-way selector module, and judge that this order is that common-mode noise eliminates control command or differential mode noise eliminates control command, if common-mode noise eliminates control command, perform step c2; If differential mode noise eliminates control command, perform step c3;
Step c2: start common-mode noise arrester unit, utilize diode unilateal conduction characteristic and directivity impedance operator and electric capacity to form filter circuit, noise reduction and stress release treatment process are carried out to the audio signal that two-way selector module stores, and performs step c4;
Step c3: start differential mode noise arrester unit, the noise that the electromagnetic disturbance utilizing differential mode circuit to be produced by electrical network in the audio signal in signal storage unit is propagated along power line suppresses, by comparing calculating, obtain noise voltage value, Ripple Suppression, amplifier common mode inhibit feature is utilized to abate the noise, then through filter by unwanted signal filtering;
Step c4: the audio signal after denoising Processing is outputted to signal amplification module, by signal amplification module by the laggard line output of audio signal pre-amplification after denoising Processing.
10. the anti-interference method of the intelligent jamproof system stated according to claim 9, it is characterized in that, described step c4 also comprises: the audio signal after denoising Processing is outputted to efficiency detection module, by efficiency detection module the audio signal after denoising Processing amplified and export main control singlechip module to after changing into control signal, described main control singlechip module judges whether to enter battery saving mode according to energy efficiency state, and sending power-saving control instruction according to judged result to signal amplification module, this power-saving control instruction of described signal amplification module enters battery saving mode.
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| CN112887052A (en) * | 2021-02-24 | 2021-06-01 | 王寿臣 | Mobile anti-interference equipment for telephone conference |
| CN112887052B (en) * | 2021-02-24 | 2023-01-17 | 南方电网调峰调频发电有限公司信息通信分公司 | Mobile anti-interference equipment for telephone conference |
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| CN105207722B (en) | 2018-01-23 |
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Address after: Sannuo smart building 3012 No. 518000 Guangdong city of Shenzhen province Nanshan District Guangdong streets Binhai Avenue 21 floor Applicant after: Shenzhen 3Nod Acousticlink Co., Ltd. Address before: 518000 Sannuo wisdom building, 3012 Binhai Avenue, Shenzhen, Guangdong, Nanshan District Applicant before: Shenzhen Sannuo Digital Audio & Video Co., Ltd. |
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Effective date of registration: 20220310 Address after: 518000 area 101A, 401, No. 15, Zhongfu Road, tangxiayong community, Yanluo street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN 3NOD DIGITAL TECHNOLOGY Co.,Ltd. Address before: 518000 21st floor, sannuo wisdom building, 3012 Binhai Avenue, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN 3NOD ACOUSTICLINK Co.,Ltd. |