CN116233695A - Protection method, protection system, protection device and protection device for coaxial loudspeaker - Google Patents
Protection method, protection system, protection device and protection device for coaxial loudspeaker Download PDFInfo
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- CN116233695A CN116233695A CN202310361090.6A CN202310361090A CN116233695A CN 116233695 A CN116233695 A CN 116233695A CN 202310361090 A CN202310361090 A CN 202310361090A CN 116233695 A CN116233695 A CN 116233695A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Acoustics & Sound (AREA)
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- Circuit For Audible Band Transducer (AREA)
Abstract
The application provides a protection method, a protection system, a protection device and a protection device of a coaxial loudspeaker, wherein the protection method of the coaxial loudspeaker comprises the steps of carrying out temperature modeling on a high-pitched unit and obtaining a transfer function of voltage and temperature of the high-pitched unit; modeling the temperature and the amplitude of the bass unit to obtain the transfer function of the voltage, the amplitude and the temperature of the bass unit; modeling the coaxial devices with the high-pitch unit and the low-pitch unit, and obtaining a heat conduction function between the coaxial devices; predicting the temperature of the next moment according to the temperature information fed back by the current of the high-pitched unit and the low-pitched unit at the previous moment; the high-pitch unit protection and the low-pitch unit protection of the coaxial device are connected in series, a target gain is obtained according to the next time temperature of the high-pitch unit and the low-pitch unit, the original audio signal and a corresponding preset threshold value, and the original audio signal is processed according to the target gain. The scheme provided by the invention protects the coaxial loudspeaker in a feedback mode.
Description
[ field of technology ]
The present disclosure relates to coaxial speakers, and more particularly, to a protection method, a protection system, a protection device, and a protection device for a coaxial speaker.
[ background Art ]
The coaxial loudspeaker in the prior art drives the bass unit and the treble unit simultaneously through the same power amplifier, when the loudspeaker plays high-loudness, high-frequency and other large signals, the temperature of the loudspeaker gradually rises, so that the amplitude is deviated, and abnormal conditions such as noise and the like are further caused, so that the loudspeaker is distorted.
Therefore, it is necessary to provide a protection method, a protection system, a protection device and a protection device for a coaxial speaker.
[ invention ]
The invention aims to provide a protection method, a protection system, a protection device and a protection device of a coaxial loudspeaker.
The technical scheme of the invention is as follows:
a method of protecting a coaxial speaker, the method comprising:
modeling the temperature of a high-pitched unit, and obtaining a transfer function of the voltage and the temperature of the high-pitched unit;
modeling the temperature and the amplitude of a bass unit, and obtaining the transfer function of the voltage, the amplitude and the temperature of the bass unit;
modeling the coaxial devices with the high-pitched unit and the low-pitched unit, and obtaining a heat conduction function between the coaxial devices;
predicting the temperature of the next moment of the high-pitched unit according to the temperature information fed back by the current of the last moment of the high-pitched unit;
predicting the temperature of the bass unit at the next moment according to the temperature information fed back by the current of the bass unit at the previous moment;
and the high-pitch unit protection and the low-pitch unit protection of the coaxial device are connected in series, a target gain is obtained according to the temperature of the next moment of the high-pitch unit, the temperature of the next moment of the low-pitch unit, the original audio signal and a corresponding preset threshold value, and the original audio signal is processed according to the target gain.
In one possible embodiment, the transfer functions of voltage, amplitude and temperature of the bass unit are connected in series by the transfer functions of voltage and temperature of the bass unit and the transfer functions of voltage and amplitude of the bass unit.
In one possible embodiment, the transfer function of the voltage and temperature of the bass unit is jointly calculated from the thermal model function, the I/V feedback data and the thermal conduction function between the coaxial devices.
In one possible embodiment, the transfer function of the voltage and temperature of the tweeter unit is jointly calculated from the thermal model function, the I/V feedback data and the thermal conduction function between the coaxial devices.
A second aspect of the present invention provides a protection system for a coaxial speaker, which is applied to the protection method for a coaxial speaker described in any one of the above, the protection system for a coaxial speaker including a bass unit, a treble unit, a signal control module, and a heat conduction module;
the signal control module is used for weighting the signal gains of the bass unit and the treble unit;
the heat conduction module is used for establishing a heat transfer model between the high-pitched unit and the low-pitched unit.
In one possible embodiment, the bass unit includes:
a bass signal acquisition module;
the bass I/V feedback module is used for feeding back the voltage of the bass unit;
the low voice coil temperature calculation module is used for feeding back the temperature of the low voice coil;
the low-tone temperature control module is used for performing gain processing on the original audio signal by utilizing the temperature gain;
the amplitude module is used for acquiring a transfer function of the amplitude and the voltage;
and the amplitude control module is used for predicting the amplitude and performing gain processing on the original audio signal by using the amplitude gain.
In one possible embodiment, the treble unit includes:
a high-pitch signal acquisition module;
the high-pitch I/V feedback module is used for feeding back the voltage of the high-pitch unit;
the high-pitch voice coil temperature calculation module is used for feeding back the temperature of the high-pitch voice coil;
and the high-pitch temperature control module is used for performing gain processing on the original audio signal by utilizing the temperature gain.
The third aspect of the present invention provides a protection device for a coaxial speaker, which is applied to the protection method for a coaxial speaker described in any one of the above, and is characterized in that the protection device for a coaxial speaker includes a main link and a plurality of branched links connected in parallel with the main link;
the main link comprises a signal control module, wherein the input end of the signal control module is used for receiving an original audio signal and is also connected with the output ends of the amplitude control module, the high-pitch temperature control module and the low-pitch temperature control module, the output end of the signal control module is connected with a coaxial device, and the output end of each branch link is connected with the input end of the signal control module.
In one possible implementation manner, in each branch link, at least one branch link comprises a high-pitch voice coil temperature calculation module, and high-pitch I/V feedback modules are arranged in the rest branch links;
at least one branched path comprises a bass voice coil temperature calculation module, and bass I/V feedback modules are arranged in the rest branched paths;
at least one of the branched paths comprises an amplitude module, and bass I/V feedback modules are arranged in the rest of the branched paths.
The fourth aspect of the present invention provides a protection device for a coaxial speaker, where an audio signal input end of the protection device for a coaxial speaker is serially provided with at least one protection device for a coaxial speaker;
wherein the protection device of the coaxial loudspeaker is any one of the protection devices of the coaxial loudspeaker.
The invention has the beneficial effects that: the high-pitch unit and the low-pitch unit are protected in a feedback mode, and the original audio frequency is adjusted to reduce the power of the loudspeaker, so that the temperature of the coaxial loudspeaker is reduced, and the appearance of the coaxial loudspeaker is reduced.
[ description of the drawings ]
Fig. 1 is a schematic diagram of a coaxial speaker according to the present invention;
fig. 2 is a schematic diagram of a protection system for a coaxial speaker according to the present invention.
Reference numerals:
1-a treble unit;
2-bass units.
[ detailed description ] of the invention
The present application is further described below with reference to the drawings and embodiments.
The embodiment of the application provides a protection method for a coaxial speaker, as shown in fig. 1, where the coaxial speaker may be a speaker that drives a bass unit 1 and a treble unit 2 simultaneously through a single Power Amplifier (PA), and the protection method for the coaxial speaker includes:
and (3) carrying out temperature modeling on the high-pitch unit 2, and obtaining a transfer function of voltage and temperature of the high-pitch unit 2. The temperature and amplitude modeling is performed on the bass unit 1, and the transfer function of the voltage, amplitude and temperature of the bass unit 1 is obtained. The coaxial device is a two-in-one device with a high-pitch unit 2 and a low-pitch unit 1, and the coaxial device is modeled to obtain a heat transfer function between the coaxial devices. Modeling is performed based on the coaxial devices of the treble unit 2 and the bass unit 1. The temperature of the next moment of the bass unit 1 is predicted according to the temperature information fed back by the current of the last moment of the treble unit 2 and the temperature of the next moment of the bass unit 1. The output of the treble unit 2 is connected to the input of the bass unit 1 such that the treble unit protection is connected in series with the bass unit protection. And obtaining a target gain according to the original audio signal and a corresponding preset threshold value, and processing the original audio signal according to the target gain. The preset threshold is the maximum temperature of the coaxial speaker and the target gain is the gain desired to be obtained. For example, when the preset threshold of the coaxial speaker is 100 degrees and the temperature of the coaxial speaker is predicted to reach 200 degrees, the original audio signal needs to be compressed by 70%, and the target gain is 70%.
In the mode provided by the invention, the high-pitch unit 2 and the low-pitch unit 1 can be protected in a feedback mode, and the original audio signal is regulated according to the target gain so as to reduce the load of the loudspeaker, thereby reducing the possibility of overhigh temperature of the coaxial loudspeaker, protecting the coaxial loudspeaker, reducing noise and reducing the possibility of distortion of the coaxial loudspeaker.
In one possible embodiment, the transfer function of the voltage, amplitude and temperature of the bass unit 1 is the overall transfer function of the bass unit 1 protection, and the overall transfer function of the bass unit 1 protection is obtained by connecting the transfer function of the voltage and temperature of the bass unit 1 in series with the transfer function of the voltage and amplitude of the bass unit 1.
The data of the bass unit 1 are integrated through a corresponding algorithm, and a transfer function of the voltage, the amplitude and the temperature of the bass unit 1 is obtained, so that the bass unit 1 can be better protected in a feedback mode.
In one possible embodiment, the transfer function of the voltage and temperature of the bass unit 1 is jointly calculated from the thermal model function, the I/V feedback data and the thermal transfer function between the coaxial devices.
By calculating the corresponding data, a transfer function of the voltage and the temperature of the bass unit 1 can be obtained, thereby facilitating the protection of the bass unit 1.
In one possible embodiment, the transfer function of the voltage and temperature of the treble unit 2 is jointly calculated from the thermal model function, the I/V feedback data and the thermal transfer function between the coaxial devices.
The data of the high-pitch unit 2 are integrated through a corresponding algorithm to obtain a transfer function of the voltage and the temperature of the high-pitch unit 2, so that the high-pitch unit 2 can be protected in a feedback mode.
As shown in fig. 2, the present invention also provides a protection system for a coaxial speaker, which can be applied to the protection method for a coaxial speaker as referred to above. The protection system of the coaxial loudspeaker comprises a bass unit 1, a treble unit 2, a signal control unit and a heat conduction module. The heat conduction module is used for establishing a heat transfer model between the high-pitched unit 2 and the low-pitched unit 1, and the signal control module is used for weighting the signal gains of the low-pitched unit 1 and the high-pitched unit 2.
The heat transfer model between the high-pitch unit 2 and the low-pitch unit 1 is built through the heat transfer module to obtain the heat transfer coefficient between the coaxial devices, so that the coaxial speakers can be better protected. The signal control module dynamically adjusts the gains of the bass unit 1 and the treble unit 2 through corresponding algorithms so as to better protect the coaxial loudspeaker and achieve the purpose of improving the tone quality.
As shown in fig. 2, in one possible embodiment, the bass unit 1 includes a bass signal acquisition module, a bass I/V feedback module, a bass voice coil temperature calculation module, a bass temperature control module, an amplitude module, and an amplitude prediction module. The bass signal acquisition module acquires a bass signal through signal fusion. The signal fusion means that two signals need to be synthesized when a single power amplification area drives the bass unit 1 and the treble unit 2 simultaneously because the bass unit 1 and the treble unit 2 play different audios and different frequency bands. The bass I/V feedback module is used for feeding back the voltage of the bass unit 1. The temperature calculation module of the bass voice coil is used for feeding back the temperature of the bass voice coil. The bass temperature control module is used for performing gain processing on the original audio signal by utilizing the temperature gain so as to realize temperature protection of the bass unit 1. The amplitude module is used for acquiring a transfer function of the amplitude and the voltage. The amplitude control module is used for predicting the amplitude and performing gain processing on the original audio signal by using the amplitude gain so as to realize the amplitude protection of the bass unit 1.
The treble unit 2 comprises a treble signal acquisition module, a treble I/V feedback module, a treble voice coil temperature calculation module and a treble temperature control module. The high-pitch signal acquisition module is used for acquiring high-pitch signals through signal fusion. The treble I/V feedback module is used for feeding back the voltage of the loudspeaker. The high voice coil temperature calculation module is used for feeding back the temperature of the high voice coil. The high-pitch temperature control module is used for performing gain processing on the original audio signal by utilizing the temperature gain so as to realize the temperature protection of the loudspeaker.
The protection system can protect the coaxial loudspeaker, reduce the possibility of noise, distortion and other conditions of the coaxial loudspeaker, and is beneficial to improving the sounding quality of the coaxial loudspeaker.
The invention also provides a protection device of the coaxial loudspeaker, which comprises a main link and a plurality of branch links connected with the main link in parallel. The main link includes signal control module, and signal control module's the short original audio signal that is used for receiving of belonging to rabbit, simultaneously, signal control module's input still is connected with amplitude control module, high pitch temperature control module and bass temperature control module's output to the corresponding signal of acquisition of being convenient for. The output end of the signal control module is connected with the coaxial device, namely connected with the loudspeaker. The output end of each link is connected with the input end of the signal control module.
At least one of the branches includes a treble voice coil temperature calculation module and has a treble I/V feedback module in the remaining branches.
At least one of the branches includes a bass voice coil temperature calculation module and has a bass I/V feedback module in the remaining branch links.
At least one of the branches includes an amplitude module and has a bass I/V feedback module in the remaining branch links.
The invention also provides a protection device for a coaxial loudspeaker, which may be a combined device with a robust and amplitude protection function. The audio signal input end of the protection device is provided with one or more protection devices of the coaxial speakers in series, and the protection devices of the coaxial speakers can be the protection devices of the coaxial speakers.
The invention provides a protection method, a protection system, a protection device and a protection device of a coaxial loudspeaker, wherein the protection method of the coaxial loudspeaker comprises the steps of carrying out temperature modeling on a high-pitched unit 2 and obtaining a transfer function of voltage and temperature of the high-pitched unit 2; modeling the temperature and the amplitude of the bass unit 1, and obtaining the transfer function of the voltage, the amplitude and the temperature of the bass unit 1; modeling the coaxial devices with the high-pitch unit 2 and the low-pitch unit 1, and obtaining a heat conduction function between the coaxial devices; according to the temperature information fed back by the current at the previous moment of the high-pitched unit 2, the temperature at the next moment of the high-pitched unit 2 is predicted; predicting the temperature of the bass unit 1 at the next moment according to the temperature information fed back by the current of the bass unit 1 at the previous moment; the high-pitch unit protection and the low-pitch unit protection of the coaxial device are connected in series, a target gain is obtained according to the next time temperature of the high-pitch unit 2 and the low-pitch unit 1, the original audio signal and a corresponding preset threshold value, and the original audio signal is processed according to the target gain. The scheme provided by the invention protects the high-pitch unit 2 and the low-pitch unit 1 in a feedback mode, can be beneficial to improving the sounding quality of the coaxial loudspeaker, reduces the possibility of noise and distortion, and meets the actual use requirements better.
While the invention has been described with respect to the above embodiments, it should be noted that modifications can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the invention.
Claims (10)
1. The protection method of the coaxial loudspeaker is characterized by comprising the following steps of:
modeling the temperature of a high-pitched unit, and obtaining a transfer function of the voltage and the temperature of the high-pitched unit;
modeling the temperature and the amplitude of a bass unit, and obtaining the transfer function of the voltage, the amplitude and the temperature of the bass unit;
modeling the coaxial devices with the high-pitched unit and the low-pitched unit, and obtaining a heat conduction function between the coaxial devices;
predicting the temperature of the next moment of the high-pitched unit according to the temperature information fed back by the current of the last moment of the high-pitched unit;
predicting the temperature of the bass unit at the next moment according to the temperature information fed back by the current of the bass unit at the previous moment;
and the high-pitch unit protection and the low-pitch unit protection of the coaxial device are connected in series, a target gain is obtained according to the temperature of the next moment of the high-pitch unit, the temperature of the next moment of the low-pitch unit, the original audio signal and a corresponding preset threshold value, and the original audio signal is processed according to the target gain.
2. The method of claim 1, wherein the transfer functions of voltage, amplitude and temperature of the bass unit are connected in series by the transfer functions of voltage and temperature of the bass unit and the transfer functions of voltage and amplitude of the bass unit.
3. The method of claim 2, wherein the transfer function of the voltage and temperature of the bass unit is calculated from a thermal model function, I/V feedback data, and a thermal transfer function between coaxial devices.
4. The method of claim 1, wherein the transfer function of the voltage and temperature of the tweeter unit is calculated from a thermal model function, I/V feedback data, and a thermal transfer function between the coaxial devices.
5. A protection system for a coaxial speaker, applied to the protection method for a coaxial speaker according to any one of claims 1 to 4, characterized in that the protection system for a coaxial speaker comprises a bass unit, a treble unit, a signal control module and a heat conduction module;
the signal control module is used for weighting the signal gains of the bass unit and the treble unit;
the heat conduction module is used for establishing a heat transfer model between the high-pitched unit and the low-pitched unit.
6. The protection system of a coaxial speaker of claim 5, wherein the bass unit comprises:
a bass signal acquisition module;
the bass I/V feedback module is used for feeding back the voltage of the bass unit;
the low voice coil temperature calculation module is used for feeding back the temperature of the low voice coil;
the low-tone temperature control module is used for performing gain processing on the original audio signal by utilizing the temperature gain;
the amplitude module is used for acquiring a transfer function of the amplitude and the voltage;
and the amplitude control module is used for predicting the amplitude and performing gain processing on the original audio signal by using the amplitude gain.
7. The protection system of a coaxial speaker of claim 5, wherein the tweeter unit comprises:
a high-pitch signal acquisition module;
the high-pitch I/V feedback module is used for feeding back the voltage of the high-pitch unit;
the high-pitch voice coil temperature calculation module is used for feeding back the temperature of the high-pitch voice coil;
and the high-pitch temperature control module is used for performing gain processing on the original audio signal by utilizing the temperature gain.
8. A protection device for a coaxial speaker, applied to the protection method for a coaxial speaker according to any one of claims 1 to 4, characterized in that the protection device for a coaxial speaker comprises a main link and a plurality of branched links connected in parallel with the main link;
the main link comprises a signal control module, wherein the input end of the signal control module is used for receiving an original audio signal and is also connected with the output ends of the amplitude control module, the high-pitch temperature control module and the low-pitch temperature control module, the output end of the signal control module is connected with a coaxial device, and the output end of each branch link is connected with the input end of the signal control module.
9. The protection device of the coaxial speaker of claim 8, wherein in each of the branch links, at least one of the branch links includes a high-pitch voice coil temperature calculation module, and a high-pitch I/V feedback module is provided in the remaining branch links;
at least one branched path comprises a bass voice coil temperature calculation module, and bass I/V feedback modules are arranged in the rest branched paths;
at least one of the branched circuits comprises an amplitude module, and DD230684I is arranged in the rest of the branched circuits
There is a bass I/V feedback module.
10. The protection device of the coaxial loudspeaker is characterized in that an audio signal input end of the protection device of the coaxial loudspeaker is connected in series with at least one protection device of the coaxial loudspeaker;
wherein the protection device of the coaxial speaker is the protection device of the coaxial speaker according to any one of claims 8 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310361090.6A CN116233695A (en) | 2023-04-04 | 2023-04-04 | Protection method, protection system, protection device and protection device for coaxial loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310361090.6A CN116233695A (en) | 2023-04-04 | 2023-04-04 | Protection method, protection system, protection device and protection device for coaxial loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116233695A true CN116233695A (en) | 2023-06-06 |
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ID=86585706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310361090.6A Pending CN116233695A (en) | 2023-04-04 | 2023-04-04 | Protection method, protection system, protection device and protection device for coaxial loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116233695A (en) |
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2023
- 2023-04-04 CN CN202310361090.6A patent/CN116233695A/en active Pending
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