阅读说明：本技术 一种平面永磁铁振膜中低音发声单元及控制方法 (Planar permanent magnet diaphragm bass sound production unit and control method ) 是由 潘昶 于 2021-08-04 设计创作，主要内容包括：本发明公开了一种平面永磁铁振膜中低音发声单元及控制方法,包括多孔导磁体和平面永磁振膜,所述平面永磁振膜通过弹性支撑包围式悬挂在多孔导磁体的内侧中心位置。本发明所述的一种平面永磁铁振膜中低音发声单元,通过采用平面永磁振膜的方式实现中低音超薄扬声器,因为是平衡驱动,所以使用单个弹性支撑就可以实现振膜的悬挂和平衡驱动,平面永磁振膜通过弹性支撑固定在多孔导磁体中间,这样的做法可以让扬声器厚度更薄,同时通过两极上变动磁场一推一拉,使动力加倍的情况下作用力均匀分布,从而产生理想振动,同时因为平面驱动,驱动效率更高,可以消除分割振动,另外还可以解决普通的静电扬声器振动幅度不够从而低频缺失的问题。(The invention discloses a bass sound production unit in a planar permanent magnet diaphragm and a control method thereof. According to the bass sound production unit in the planar permanent magnet diaphragm, the bass ultrathin loudspeaker is realized by adopting the planar permanent magnet diaphragm, because balanced driving is realized, the suspension and balanced driving of the diaphragm can be realized by using a single elastic support, the planar permanent magnet diaphragm is fixed in the middle of the porous magnetizer through the elastic support, the thickness of the loudspeaker can be thinner, meanwhile, acting force is uniformly distributed under the condition of doubling power by changing the push and pull of the moving magnetic fields on two poles, so that ideal vibration is generated, meanwhile, because of planar driving, the driving efficiency is higher, the split vibration can be eliminated, and in addition, the problem that the low frequency is lost due to insufficient vibration amplitude of a common electrostatic loudspeaker can be solved.)

1. The utility model provides a bass sound production unit in plane permanent magnet vibrating diaphragm which characterized in that: including porous magnetizer (1) and plane permanent magnetism vibrating diaphragm (2), plane permanent magnetism vibrating diaphragm (2) support (3) surround through elasticity and hang the inboard central point that puts in porous magnetizer (1), the circular array of porous magnetizer (1) has coil (4), the outside parcel of elastic support (3) has the membrane.

2. The bass sound production unit in the planar permanent magnet diaphragm of claim 1, characterized in that: the planar permanent magnetic diaphragm (2) is calibrated at the central position of the porous magnetizer (1) by adding a predistortion signal through a DSP algorithm.

3. The bass sound production unit in the planar permanent magnet diaphragm of claim 1, characterized in that: the number of the coils (4) is at least one group.

4. A control method of a bass sound production unit in a planar permanent magnet diaphragm is characterized by comprising the following steps: the control method specifically comprises the following steps:

the method comprises the following steps: when a digital music signal source comes in, the digital music signal source is firstly subjected to signal processing by a signal processing module, and a predistortion signal different from a traditional loudspeaker system in dynamic motion of the digital music signal source needs to be superposed and eliminated, so that the aim of voltage vibration linear energy conversion is fulfilled;

step two: whether the magnet is positioned between the two driving poles can be calculated according to the back electromotive force, and after the calculation of the signal processing module, the direct current offset is calculated and superposed to the output signal end;

step three: transmitting the digital signals after the two steps to a power amplification module;

step four: the power amplification module outputs a drive coil (4) to convert the voltage signal into a vibration signal.

Technical Field

The invention relates to the field of bass sounding units, in particular to a bass sounding unit in a planar permanent magnet diaphragm, and more particularly relates to the bass sounding unit in the planar permanent magnet diaphragm and a control method.

Background

The loudspeaker is a very common electroacoustic transducer, mainly converts an electric energy signal into an audio signal, and is arranged in all sound production equipment, wherein the sound production equipment comprises an earphone, a mobile phone, a loudspeaker and the like, and a bass sound production unit is a necessary sound production module in the loudspeaker and mainly plays a role of bass sound production;

however, the existing bass sound production unit has certain disadvantages to be improved when in use, and firstly, the existing bass sound production unit has poor propelling force and poor usability; secondly, the existing bass sound production unit has an asymmetric magnetic circuit, higher efficiency and large separation vibration.

Disclosure of Invention

The invention mainly aims to provide a bass sound production unit in a planar permanent magnet diaphragm, which can effectively solve the problems in the background technology that: the existing bass sounding unit has poor propelling force and poor service performance; secondly, the existing bass sound production unit has an asymmetric magnetic circuit, higher efficiency and large separation vibration.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a bass sound production unit in plane permanent magnet vibrating diaphragm, includes porous magnetizer and plane permanent magnet vibrating diaphragm, plane permanent magnet vibrating diaphragm hangs the inboard central point that porous magnetizer put through elastic support enclosed type, the circular array of porous magnetizer has the coil, elastic support's outside parcel has the membrane.

As a further scheme of the invention, the planar permanent magnet diaphragm is calibrated at the central position of the porous magnetizer by adding a predistortion signal through a DSP algorithm.

As a further scheme of the invention, the number of the coils is at least one group.

As a further aspect of the present invention, the control method specifically includes the steps of:

the method comprises the following steps: when a digital music signal source comes in, the digital music signal source is firstly subjected to signal processing by a signal processing module, and a predistortion signal different from a traditional loudspeaker system in dynamic motion of the digital music signal source needs to be superposed and eliminated, so that the aim of voltage vibration linear energy conversion is fulfilled;

step two: whether the magnet is positioned between the two driving poles can be calculated according to the back electromotive force, and after the calculation of the signal processing module, the direct current offset is calculated and superposed to the output signal end;

step three: transmitting the digital signals after the two steps to a power amplification module;

step four: the power amplification module outputs a driving coil, thereby converting the voltage signal into a vibration signal.

Compared with the prior art, the invention has the following beneficial effects:

through the mode that adopts plane permanent magnetism vibrating diaphragm realize the ultra-thin speaker of well bass, because be balanced drive, so use single elastic support just can realize hanging and balanced drive of vibrating diaphragm, plane permanent magnetism vibrating diaphragm passes through elastic support to be fixed in the middle of the porous magnetizer, such way can let speaker thickness thinner, change the magnetic field through two poles of the earth simultaneously and push away one and draw, effort evenly distributed under the condition that makes the power double, thereby produce ideal vibration, because plane drive simultaneously, the drive efficiency is higher, can eliminate and cut apart the vibration, thereby can also solve the problem that ordinary electrostatic loudspeaker vibration amplitude is not enough low frequency disappearance in addition.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a bass sound unit in a planar permanent magnet diaphragm according to the present invention;

fig. 2 is a flowchart of a method for controlling a bass sound unit in a planar permanent magnet diaphragm according to the present invention.

In the figure: 1. a porous magnetizer; 2. a planar permanent magnet diaphragm; 3. elastic support; 4. and a coil.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-2, a bass sound producing unit in a planar permanent magnet diaphragm includes a porous magnetizer 1 and a planar permanent magnet diaphragm 2, the planar permanent magnet diaphragm 2 is suspended at the center of the inner side of the porous magnetizer 1 in a surrounding manner by an elastic support 3, a coil 4 is arranged in a circular array of the porous magnetizer 1, and a membrane is wrapped outside the elastic support 3.

The planar permanent magnetic diaphragm 2 is calibrated at the center of the porous magnetizer 1 by adding a predistortion signal through a DSP algorithm.

The number of coils 4 is at least one.

The control method specifically comprises the following steps:

the method comprises the following steps: when a digital music signal source comes in, the digital music signal source is firstly subjected to signal processing by a signal processing module, and a predistortion signal different from a traditional loudspeaker system in dynamic motion of the digital music signal source needs to be superposed and eliminated, so that the aim of voltage vibration linear energy conversion is fulfilled;

step two: whether the magnet is positioned between the two driving poles can be calculated according to the back electromotive force, and after the calculation of the signal processing module, the direct current offset is calculated and superposed to the output signal end;

step three: transmitting the digital signals after the two steps to a power amplification module;

step four: the power amplification module outputs the driving coil 4, thereby converting the voltage signal into a vibration signal.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.