CN111678544B - Balanced bidirectional output high-voltage wave source device and working method thereof - Google Patents
Balanced bidirectional output high-voltage wave source device and working method thereof Download PDFInfo
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- CN111678544B CN111678544B CN202010505606.6A CN202010505606A CN111678544B CN 111678544 B CN111678544 B CN 111678544B CN 202010505606 A CN202010505606 A CN 202010505606A CN 111678544 B CN111678544 B CN 111678544B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/48—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using wave or particle radiation means
Abstract
The invention discloses a balanced bidirectional output high-pressure wave source device and a working method thereof, wherein the balanced bidirectional output high-pressure wave source device comprises a rigid main body, a group of elastic folding rings symmetrically arranged on the rigid main body, a sound membrane connected with the other end of each elastic folding ring, and a driver main body connected with the sound membrane, wherein the driver main body is arranged on the rigid main body, the sound membrane is electrically connected with the driver main body, the volume of a pressure control page can be adjusted by filling heat conduction pressure control liquid, so that the balance of positive pressure and negative pressure is realized, the device can provide a group of balanced bidirectional output high-pressure wave sources, the detection work can be completed according to the group of wave sources, the volume of heat conduction pressure control liquid in a front cavity and a rear cavity is adjusted, the volume of the rear cavity is further equal to the volume of the front cavity, the amplitude of the output negative pressure is ensured to be equal to that of positive pressure sound wave, and the heat conduction pressure control liquid is simultaneously used for long-time working of high sound pressure.
Description
Technical Field
The invention relates to a bidirectional output wave source device, in particular to a balanced bidirectional output high-voltage wave source device, and relates to the technical field of acoustic sensors.
Background
In order to realize the work of checking the reverse characteristics of the sensor, the development of the bidirectional balance type standard pressure wave source is completed, and thus the calibration work of the wave source is completed.
However, the traditional calibrator can only provide unidirectional sound pressure, and has low sound pressure, narrow frequency band and low frequency deviation, meanwhile, most of the existing microphone calibrators are driven by common electric speakers or driven by pistons excited by a vibrating table, such as CEA in France, alaska university in America and the like, namely, only one-way wave source can output check pressure waves with one polarity, but the reverse characteristic check work of the sensor is needed most of the time.
Thus, how to provide a balanced bi-directional output Gao Yabo source is a problem to be solved at present.
Disclosure of Invention
The invention aims to: a balanced bi-directional output high-voltage wave source device is provided to solve the above problems in the prior art.
The technical scheme is as follows: a balanced bi-directional output high-voltage wave source device, comprising:
the sound membrane is connected with the other end of the elastic folding ring, the driver body is connected with the sound membrane, the driver body is arranged on the rigid body, and the sound membrane is electrically connected with the driver body.
In a further embodiment, the upper end of the driver main body is further provided with a positive pressure sound nozzle, the negative pressure sound nozzle is arranged on one side of the rigid main body, the negative pressure sound nozzle is positioned on the driver main body, and the negative pressure sound nozzle is positioned on a signal terminal on a different side from the negative pressure sound nozzle, the signal terminal is electrically connected with the driver main body, and at the moment, vibration of the sound membrane and an input signal input to the driver main body are in a linear relationship.
In a further embodiment, a heat conduction pressure control liquid is further arranged in the rigid main body, a layer of pressure control liquid level is formed in the rigid main body, the sound membrane is connected with the elastic folding ring so as to divide the interior of the rigid main body into two spaces, the sound membrane upper part and the positive pressure sound nozzle are located in the same space and are front cavities, the sound membrane lower part and the negative pressure sound nozzle are located in the same space and are rear cavities, when the heat conduction pressure control liquid is not injected, the front cavity volume is unequal to the rear cavity volume, the heat conduction pressure control liquid is filled in the rear cavities, the residual volume in the rear cavities can be adjusted, the volumes of the front cavities and the rear cavities are equal, the driver main body starts to work at the moment, the driver main body which moves drives the sound membrane to start to work, the sound membrane which vibrates can enable the positive pressure sound nozzle located in the front cavity and the negative pressure sound nozzle located in the rear cavity to generate pressure waves with the same amplitude and opposite phases, meanwhile, the heat conduction pressure control liquid is filled in the front cavities volume and the negative pressure sound nozzle is the rear cavity, the front cavity volume and the negative pressure sound nozzle volume is the rear cavity, the front cavity volume and the heat conduction pressure control liquid is the front cavity volume is the back pressure sound pump is the same, the front cavity volume and the heat conduction pressure sound source and the sound source is the back pressure sound pump is the same.
In a further embodiment, the driver body is immersed in the heat-conducting pressure-controlling liquid, so that a large pressure wave can be generated, the smaller the nonlinear distortion is, the smaller the deviation between the positive pressure and the negative pressure is, and further, a more accurate detection result can be obtained when the detection and calibration work is performed.
In a further embodiment, the sound membrane is a cone made of a rigid light material, so that the deformation of sound waves striking from the sound membrane is small, the electroacoustic conversion efficiency is high, and the sound membrane is suitable for generating low-frequency pressure waves.
In a further embodiment, the elastic folding ring has a predetermined elasticity, the elastic folding ring has a watertight structure, and the folding ring has a predetermined elasticity, thereby ensuring the stability of the device.
A working method for detecting a balanced bidirectional output high-voltage wave source comprises the following steps:
s1: when a bidirectional balanced standard pressure wave source needs to be developed, a control signal is provided;
s2: after the corresponding control signal is improved, the control signal is transmitted to the driver main body after passing through the signal terminal, the driver main body receives the control signal at the moment, then the driver main body starts to work, the moving driver main body pushes the sound membrane to start vibrating, and at the moment, the vibration of the sound membrane and an input signal input to the driver main body are in a linear relation;
s3: when the volumes of the upper and lower sound films are small enough, pressure fluctuation generated by vibration of the sound film is in a linear relation with signals input to the driver main body, and then the volumes of the front cavity and the rear cavity can be equal by filling heat conduction pressure control liquid into the rear cavity and then adjusting the residual volume in the rear cavity, at the moment, the driver main body is controlled to start working, and then the moving driver main body drives the sound film to start working, so that the vibrating sound film can enable a positive pressure sound nozzle positioned in the front cavity and a negative pressure sound nozzle positioned in the rear cavity to generate pressure waves with the same amplitude and opposite phases, and meanwhile, the volumes of the pressure control liquid level can be adjusted by filling heat conduction pressure control liquid, so that the balance of positive pressure and negative pressure is realized;
s4: and then a group of bidirectional balanced standard pressure wave sources is obtained, and the detection work of the group of wave sources is completed.
The beneficial effects are that: the invention discloses a balanced bidirectional output high-pressure wave source device, which aims to provide a balanced bidirectional output Gao Yabo source, and further a heat conduction pressure control liquid is arranged in a rigid main body, wherein the heat conduction pressure control liquid can form a layer of pressure control liquid level in the rigid main body, a sound membrane is connected with an elastic folding ring so as to divide the interior of the rigid main body into two spaces, the upper part of the sound membrane and the sound pressure mouth are positioned in the same space and are front cavities, the lower part of the sound membrane and the sound pressure mouth are rear cavities positioned in the same space, when the heat conduction pressure control liquid is not injected, the volumes of the front cavities and the rear cavities are unequal, and further, the residual volumes in the rear cavities can be adjusted by filling the heat conduction pressure control liquid, so that the volumes of the front cavities and the rear cavities are equal, at the moment, the driver main body starts working, and the sound membrane starts working, and the vibrating sound membrane can enable the sound pressure mouth positioned in the front cavity and the sound pressure mouth positioned in the rear cavity to be the same in amplitude, and opposite in phase, and simultaneously the heat conduction pressure control liquid can be filled with the heat conduction pressure control liquid, the heat conduction pressure control liquid can be balanced, the volume can be simultaneously, and the volume of the heat conduction pressure control liquid can be balanced, and the volume can be simultaneously, and the volume of the heat conduction pressure control wave source can be balanced, and the volume can be simultaneously, and the volume can be balanced by the heat-pressure control liquid can be simultaneously, and the volume can be balanced by the heat pressure control.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The reference numerals are: the sound pressure control device comprises a positive pressure sound nozzle 1, a sound membrane 2, an elastic folding ring 3, a pressure control liquid level 4, a driver main body 5, a negative pressure sound nozzle 6, a rigid main body 7, heat conduction pressure control liquid 8 and a signal terminal 9.
Detailed Description
The reason for this problem (traditional calibrators only provide unidirectional sound pressure, but have low sound pressure, narrow frequency band and low frequency offset) is that the traditional microphone calibrators, except for single-frequency piston calibrators of 125Hz, 250Hz, 1kHz and the like, are mostly driven by common electric speakers or pistons excited by vibration tables, such as CEA in France, abstract university and the like, are unidirectional wave sources, namely only one polarity of check pressure wave can be output, but most of the time only one polarity of check pressure wave is required to work against the reverse characteristics of the sensor, and only one polarity of check pressure wave cannot meet the requirement, the invention aims to provide a balanced bidirectional output Gao Yabo source, and further a heat-conducting pressure-controlling liquid is arranged in the rigid body, wherein the heat-conducting pressure-controlling liquid forms a layer of pressure-controlling liquid level in the rigid body, the sound membrane is connected with the elastic folding ring to divide the interior of the rigid main body into two spaces, the sound membrane upper part and the positive pressure sound nozzle are positioned in the front cavity in the same space, the sound membrane lower part and the negative pressure sound nozzle are positioned in the rear cavity in the same space, the front cavity volume is unequal to the rear cavity volume when the heat conduction pressure control liquid is not injected, the rest volume in the rear cavity can be adjusted by filling the heat conduction pressure control liquid in the rear cavity, the volumes of the front cavity and the rear cavity are equal, at the moment, the main body of the driver starts to work, the moving main body of the driver drives the sound membrane to start to work, the vibrating sound membrane can enable the positive pressure sound nozzle positioned in the front cavity and the negative pressure sound nozzle positioned in the rear cavity to generate pressure waves with the same amplitude and opposite phases, and the volume of the pressure control liquid level can be adjusted by filling the heat conduction pressure control liquid, thereby realize the balance of malleation and negative pressure, and then the device can provide a set of balanced two-way output high-voltage wave source, and then can accomplish detection work according to this set of wave source, the volume of regulation heat conduction accuse pressure liquid that sets up simultaneously in the front and back chamber, and then make back chamber volume and front chamber volume equal, guarantee to export the amplitude of negative pressure and malleation sound wave equal, heat conduction accuse pressure liquid heat conduction simultaneously is applicable to high sound pressure long-time work.
A balanced bi-directional output high-voltage wave source device, comprising: the sound pressure control device comprises a positive pressure sound nozzle 1, a sound membrane 2, an elastic folding ring 3, a pressure control liquid level 4, a driver main body 5, a negative pressure sound nozzle 6, a rigid main body 7, heat conduction pressure control liquid 8 and a signal terminal 9.
The device comprises a rigid main body 7, a group of elastic folding rings 3 symmetrically arranged on the rigid main body 7, a sound membrane 2 connected with the other end of the elastic folding rings 3, and a driver main body 5 connected with the sound membrane 2, wherein the driver main body 5 is arranged on the rigid main body 7, the sound membrane 2 is electrically connected with the driver main body 5, and when a bidirectional balanced type standard pressure wave source is required to be developed, a control signal is provided at the moment, so that control work is completed.
The driver is characterized in that the upper end of the driver main body 5 is also provided with a positive pressure sound nozzle 1, a negative pressure sound nozzle 6 is arranged on one side of the rigid main body 7, the negative pressure sound nozzle 6 is arranged on the driver main body 5 and is in signal terminals 9 on different sides of the negative pressure sound nozzle 6, the signal terminals 9 are electrically connected with the driver main body 5, when corresponding control signals are transmitted, the control signals are transmitted to the driver main body 5 after passing through the signal terminals 9, the driver main body 5 receives the control signals, then the driver main body 5 starts to work, the driver main body 5 which moves further pushes the sound membrane 2 to start vibrating, and at the moment, the vibration of the sound membrane 2 and an input signal input to the driver main body 5 are in linear relation.
The heat conduction pressure control liquid 8 is further arranged in the rigid main body 7, a layer of pressure control liquid level 4 is formed in the rigid main body 7 by the heat conduction pressure control liquid 8, the sound membrane 2 is connected with the elastic folding ring 3 so as to divide the interior of the rigid main body 7 into two spaces, the upper part of the sound membrane 2 and the positive pressure acoustic nozzle 1 are located in the same space and are front cavities, the lower part of the sound membrane 2 and the negative pressure acoustic nozzle 6 are located in the same space and are rear cavities, when the heat conduction pressure control liquid 8 is not injected, the front cavity volume and the rear cavity volume are unequal, when the volume of the sound membrane 2 is small enough, the pressure fluctuation generated by vibration of the sound membrane 2 and the signal input into the driver main body 5 are in a linear relation, and then the volume remaining in the rear cavity is adjusted, so that the volumes of the front cavity and the rear cavity are equal, at the moment, the driver main body 5 is controlled to work, the driver main body 5 is driven to work, the sound membrane 2 is driven to work, when the sound membrane 2 is located in the front cavity and the negative pressure acoustic nozzle 1 is located in the same space, the negative pressure control liquid level is balanced, the two-phase is balanced, the two-way pressure wave source can be achieved, the two-way pressure wave source can be balanced, and the two-way pressure control device can be realized, the two-way pressure wave source can be balanced, and the two-phase pressure wave source can be simultaneously, and the two-phase pressure source can be balanced, and the pressure wave source can be balanced.
The driver main body 5 is soaked in the heat conduction pressure control liquid 8, the heat conduction pressure control liquid 8 is arranged, the heat conduction pressure control liquid 8 can play a role in heat conduction, the service life of the driver main body is prolonged, the generated sound pressure can reach 1000w level, the lower limit of 3dB frequency can reach 0.001Hz, meanwhile, larger pressure waves are generated, nonlinear distortion is smaller, the deviation of positive pressure and negative pressure is smaller, and more accurate detection results can be obtained when detection and calibration work is carried out.
The sound membrane 2 is a conical body made of rigid light materials, and the sound membrane 2 is arranged into the conical body, so that the deformation of sound waves beaten from the sound membrane 2 is small, the electroacoustic conversion efficiency is high, and the sound membrane is suitable for generating low-frequency pressure waves.
The elastic folding ring 3 has preset elasticity, the elastic folding ring 3 is of a watertight structure, and the elastic folding ring has preset elasticity through the arranged folding ring with an elastic function, so that the stability of the device is guaranteed under the high sound pressure state.
Description of working principle: when a bidirectional balanced standard pressure wave source needs to be developed, a control signal is provided; after the corresponding control signal is transmitted, the control signal is transmitted to the driver main body 5 after passing through the signal terminal 9, the driver main body 5 receives the control signal, then the driver main body 5 starts working, the moving driver main body 5 pushes the sound membrane 2 to start vibrating, and the vibration of the sound membrane 2 and an input signal input to the driver main body 5 are in a linear relation; when the volumes of the sound membrane 2 are small enough, the pressure fluctuation generated by the vibration of the sound membrane 2 is in a linear relation with the signal input to the driver main body 5, and then the volume of the front cavity and the volume of the rear cavity can be equal by filling the heat conduction pressure control liquid 8 in the rear cavity and then adjusting the residual volume in the rear cavity, at the moment, the driver main body 5 is controlled to start working, the moving driver main body 5 drives the sound membrane 2 to start working, and the vibrating sound membrane 2 can enable the positive pressure sound nozzle 1 positioned in the front cavity and the negative pressure sound nozzle 6 positioned in the rear cavity to generate pressure waves with the same amplitude and opposite phase, and meanwhile, the volume of the pressure control liquid level can be adjusted by filling the heat conduction pressure control liquid 8, so that the balance of positive pressure and negative pressure is realized; and a group of bidirectional balance type standard pressure wave sources can be obtained at the moment, so that the group of wave sources can be detected.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present invention within the scope of the technical concept of the present invention, and these equivalent changes all fall within the scope of the present invention.
Claims (4)
1. A balanced bi-directional output high-voltage wave source device, comprising: the sound membrane is arranged on the rigid main body, the sound membrane is electrically connected with the driver main body, the moving driver main body pushes the sound membrane to start vibrating, and the vibration of the sound membrane is in linear relation with an input signal input to the driver main body;
the upper end of the driver main body is also provided with a positive pressure sound nozzle, a negative pressure sound nozzle is arranged on one side of the rigid main body, and a signal terminal which is positioned on the driver main body and is positioned on a different side from the negative pressure sound nozzle is electrically connected with the driver main body;
the heat conduction pressure control liquid is further arranged in the rigid main body, a layer of pressure control liquid level is formed in the rigid main body, the sound membrane is connected with the elastic folding ring so as to divide the interior of the rigid main body into two spaces, the sound membrane upper part and the positive pressure sound nozzle are located in the same space and are front cavities, the sound membrane lower part and the negative pressure sound nozzle are located in the same space and are rear cavities, when the heat conduction pressure control liquid is not injected, the front cavity volume is unequal to the rear cavity volume, the heat conduction pressure control liquid is injected into the rear cavities, the residual volume in the rear cavities can be adjusted, the volumes of the front cavities and the rear cavities are equal, at the moment, the driver main body starts to work, the sound membrane is driven to start to work by the moving sound membrane, the positive pressure sound nozzle located in the front cavity and the negative pressure sound nozzle located in the rear cavity can generate pressure waves with the same amplitude and opposite phases, meanwhile, the heat conduction pressure control liquid is injected, the volume of the pressure control liquid level can be adjusted, and the balance of positive pressure and negative pressure is achieved;
the driver body is immersed in a thermally conductive pressure control liquid.
2. The balanced bi-directional output high-voltage wave source device according to claim 1, wherein: the sound membrane is a conical body made of rigid light materials.
3. The balanced bi-directional output high-voltage wave source device according to claim 1, wherein: the elastic folding ring has preset elasticity, and is of a watertight structure.
4. A method of operation for detecting a balanced bi-directional output high voltage wave source, based on the apparatus of claim 3, the method comprising the steps of: s1: when a bidirectional balanced standard pressure wave source needs to be developed, a control signal is provided; s2: after the corresponding control signal is improved, the control signal is transmitted to the driver main body after passing through the signal terminal, the driver main body receives the control signal at the moment, then the driver main body starts to work, the moving driver main body pushes the sound membrane to start vibrating, and at the moment, the vibration of the sound membrane and an input signal input to the driver main body are in a linear relation; s3: when the volumes of the upper and lower sound films are small enough, pressure fluctuation generated by vibration of the sound film is in a linear relation with signals input to the driver main body, and then the volumes of the front cavity and the rear cavity can be equal by filling heat conduction pressure control liquid into the rear cavity and then adjusting the residual volume in the rear cavity, at the moment, the driver main body is controlled to start working, and then the moving driver main body drives the sound film to start working, so that the vibrating sound film can enable a positive pressure sound nozzle positioned in the front cavity and a negative pressure sound nozzle positioned in the rear cavity to generate pressure waves with the same amplitude and opposite phases, and meanwhile, the volumes of the pressure control liquid level can be adjusted by filling heat conduction pressure control liquid, so that the balance of positive pressure and negative pressure is realized; s4: and a group of bidirectional balanced standard pressure wave sources is obtained, so that the detection work of the group of wave sources can be completed.
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| CN111678544A (en) | 2020-09-18 |
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