阅读说明：本技术 双路结构磁电式速度传感器 (Magnetoelectric speed sensor with double-path structure ) 是由 孙中心 李艳艳 戚全 常丽红 戚君洁 吴俊龙 王吉桥 王进京 常建树 魏凯 于 2020-07-16 设计创作，主要内容包括：本发明涉及一种双路结构磁电式速度传感器,其解决了磁电式速度传感器只有一端输出,只能检测单一方向振动信号的的技术问题,其设有导磁壳体,导磁壳体连接设有上盖和下盖,上盖设有两个上端路引出端子,导磁壳体内部设有磁钢,磁钢上部连接有上磁靴,磁钢下部连接有下磁靴,上磁靴和下磁靴与导磁壳体的内壁之间设有线圈骨架,线圈骨架的上端部通过上弹簧片与上磁靴连接,线圈骨架的下端部通过下弹簧片与下磁靴连接,下盖有两个下端路引出端子,线圈骨架上设有绕线窗口,绕线窗口上绕有外层线圈和内层线圈,上端路引出端子与外层线圈连接,下端路引出端子与内层线圈连接,速度传感器为双路结构。本发明可广泛应于地震勘探和工程测量。(The invention relates to a two-way structure magnetoelectric speed sensor, which solves the technical problem that the magnetoelectric speed sensor only has one end for outputting and can only detect single-direction vibration signals, and is provided with a magnetic conduction shell, the magnetic conduction shell is connected with an upper cover and a lower cover, the upper cover is provided with two upper end circuit leading-out terminals, magnetic steel is arranged in the magnetic conduction shell, the upper part of the magnetic steel is connected with an upper magnetic shoe, the lower part of the magnetic steel is connected with a lower magnetic shoe, a coil framework is arranged between the upper magnetic shoe and the lower magnetic shoe and the inner wall of the magnetic conduction shell, the upper end part of the coil framework is connected with the upper magnetic shoe through an upper spring piece, the lower end part of the coil framework is connected with the lower magnetic shoe through a lower spring piece, the lower cover is provided with two lower end circuit leading-out terminals, a winding window is arranged on the coil framework, an outer coil and an inner, the speed sensor is of a double-path structure. The invention can be widely applied to seismic exploration and engineering measurement.)

1. A magnetoelectric speed sensor with a double-circuit structure is provided with a magnetic conduction shell, the magnetic conduction shell is connected with an upper cover and a lower cover, the upper cover is provided with two upper end circuit leading-out terminals, magnetic steel is arranged in the magnetic conduction shell, the upper part of the magnetic steel is connected with an upper magnetic shoe, the lower part of the magnetic steel is connected with a lower magnetic shoe, a coil framework is arranged between the upper magnetic shoe and the lower magnetic shoe and the inner wall of the magnetic conduction shell, the upper end part of the coil framework is connected with the upper magnetic shoe through an upper spring piece, the lower end part of the coil framework is connected with the lower magnetic shoe through a lower spring piece, the magnetoelectric speed sensor is characterized in that the lower cover is provided with two lower end circuit leading-out terminals, a winding window is arranged on the coil framework, an outer coil and an inner coil are wound on the winding window, the upper end circuit leading-out terminal is connected with, the speed sensor is of a double-path structure.

2. The magnetoelectric speed sensor according to claim 1, wherein the coil bobbin is divided into an upper bobbin and a lower bobbin, the lower bobbin is provided with two mounting holes, the mounting holes are respectively provided with a binding post, the inner coil is wound around the upper bobbin and the lower bobbin, the winding directions of the inner coil wound around the upper bobbin and the lower bobbin are opposite, two ends of the inner coil are respectively welded with the binding posts, and the binding posts are connected with the lower circuit leading-out terminals through welded lead springs.

3. The magnetoelectric velocity transducer according to claim 2, wherein the outer coil is wound around the inner coil, the winding directions of the outer coils wound around the upper bobbin and the lower bobbin are opposite, and the outer coil leads are respectively welded to the upper spring plate and connected to the upper terminal lead-out terminal through the upper inner and outer contact pieces.

4. The magnetoelectric velocity sensor according to claim 3, wherein said upper frame and said lower frame are further provided with a locking groove and a wire passing groove.

5. The magnetoelectric speed sensor according to claim 1, wherein a connecting part of an insulating material is connected between said lower cover and said bobbin, said connecting part having cylindrical protrusions at upper and lower ends, said lower magnetic shoe having a groove at a lower end, said lower cover having a groove at an upper end, said connecting part having the cylindrical protrusion at an upper end engaged with said lower magnetic shoe groove, said connecting part having the cylindrical protrusion at a lower end engaged with said lower cover groove.

6. The magnetoelectric speed sensor according to claim 5, wherein skeleton positioning means are provided on both sides of a middle portion of the connecting member, and positioning grooves are provided on a lower end of the lower skeleton, and the skeleton positioning means and the positioning grooves position the bobbin.

7. The two-way structure magnetoelectric speed sensor according to claim 1, wherein said magnetic steel is neodymium iron boron magnetic steel.

Technical Field

The invention relates to the technical field of sensors, in particular to a magnetoelectric speed sensor with a double-circuit structure.

Background

The magnetoelectric velocity sensor is a conventional sensor used for seismic exploration and engineering measurement, converts ground vibration into an electric signal proportional to the vibration velocity, and is a device for converting mechanical energy into electric energy. The existing magnetoelectric speed sensor can only output an electric energy signal through one end of a vibration signal, and a single magnetoelectric speed sensor with the frequency lower than 8Hz can not realize the function of vertical and horizontal dual-purpose.

Disclosure of Invention

The invention provides a two-way structure magnetoelectric speed sensor which has the advantages that the volume is unchanged, the two ends can be simultaneously output, and the lowest frequency can be expanded to the low frequency of 5Hz, so as to solve the technical problem that the conventional magnetoelectric speed sensor only has one end for outputting and can only detect a vibration signal in a single direction.

The invention provides a two-way structure magnetoelectric speed sensor which is provided with a magnetic conduction shell, wherein the magnetic conduction shell is connected with an upper cover and a lower cover, the upper cover is provided with two upper end circuit leading-out terminals, magnetic steel is arranged in the magnetic conduction shell, the upper part of the magnetic steel is connected with an upper magnetic shoe, the lower part of the magnetic steel is connected with a lower magnetic shoe, a coil framework is arranged between the upper magnetic shoe and the inner wall of the magnetic conduction shell, the upper end part of the coil framework is connected with the upper magnetic shoe through an upper spring piece, the lower end part of the coil framework is connected with the lower magnetic shoe through a lower spring piece, the lower cover is provided with two lower end circuit leading-out terminals, a winding window is arranged on the coil framework, an outer coil and an inner coil are wound on the winding window, the upper end circuit leading-out terminal is connected.

Preferably, the coil skeleton divide into skeleton and lower skeleton, goes up the skeleton and is equipped with draw-in groove and 2 and crosses the wire casing, is equipped with the draw-in groove on the lower skeleton, 2 crosses the wire casing, 2 constant head tanks and 2 mounting holes, respectively installs the terminal on the mounting hole, inlayer coil winding is at last skeleton and lower skeleton, the inlayer coil winding of going up skeleton and lower skeleton winding is to opposite, the both ends of inlayer coil weld with terminal inner respectively, the outer end of terminal is led out the terminal through welded lead spring and lower terminal.

Preferably, the outer coil is wound on the inner coil, the winding directions of the outer coil wound by the upper framework and the outer coil wound by the lower framework are opposite, and the leads of the outer coil are respectively welded to the upper spring piece and are connected with the upper end circuit leading-out terminal through the upper inner and outer contact pieces.

Preferably, a connecting part made of insulating materials is connected between the lower cover and the coil framework, a protrusion is arranged at the upper end of the connecting part, framework positioning devices are arranged on two sides of the lower end of the connecting part, a groove is arranged at the lower end of the lower magnetic shoe, the groove of the lower magnetic shoe is matched with the protrusion of the connecting part, a positioning groove is arranged at the lower end of the lower framework, the framework positioning devices and the positioning groove position the coil framework, and the lower end of the connecting part is connected with.

Preferably, the magnetic steel is neodymium iron boron magnetic steel.

The invention has the beneficial effects that: the invention adopts the electromechanical combined two-way structure magnetoelectric speed sensor, and under the condition that the volume performance and the like of the traditional magnetoelectric speed sensor are not changed, the magnetoelectric speed sensor with the two-way structure can output double electric energy signals by the same vibration signal through two ends, and the output electric energy is equivalent to the electric energy output by two common magnetoelectric speed sensors; after a direct current signal is added to one end of the magnetic speed sensor, the balance position of a coil in the magnetic speed sensor can be changed, so that the vertical speed sensor can be used for measuring horizontal vibration signals, the horizontal speed sensor can be used for measuring vertical vibration signals, and the natural frequency of the vertical and horizontal dual-purpose machine core can be lowered to 5 Hz.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a two-way output waveform of the present invention when picking up an 80Hz vibration signal;

FIG. 3 is a schematic diagram of a two-way output waveform of the present invention when picking up a 40Hz vibration signal;

FIG. 4 is a schematic diagram of a two-way output waveform of the present invention when picking up a 20Hz vibration signal;

FIG. 5 is a schematic diagram of a two-way output waveform of the present invention when picking up a 10Hz vibration signal;

FIG. 6 is a schematic diagram of a two-way output waveform of the present invention when picking up a 5Hz vibration signal;

FIG. 7 is a schematic diagram of a two-way output waveform of the present invention when picking up a 3Hz vibration signal;

FIG. 8 is a schematic diagram of a two-way output waveform of the present invention when picking up a 2Hz vibration signal;

FIG. 9 is a schematic diagram showing the comparison between the output waveforms of the upper end circuit and the vertical magnetoelectric velocity sensor after 2Hz vibration signals are collected after a DC 3.7V voltage is applied to the lower end circuit;

FIG. 10 is a schematic diagram showing the comparison between the output waveforms of the lower circuit and the vertical magnetoelectric velocity sensor after 3Hz vibration signals are collected after a DC 3.7V voltage is applied to the lower circuit;

FIG. 11 is a schematic diagram showing the comparison between the output waveforms of the upper end circuit and the vertical magnetoelectric velocity sensor after 5Hz vibration signals are collected after a DC 3.7V voltage is applied to the lower end circuit;

FIG. 12 is a schematic diagram showing the comparison between the output waveforms of the upper end circuit and the vertical magnetoelectric velocity sensor after 10Hz vibration signals are collected after a DC 3.7V voltage is applied to the lower end circuit;

FIG. 13 is a schematic diagram showing the comparison between the output waveforms of the upper end circuit and the vertical magnetoelectric velocity sensor after 20Hz vibration signals are collected after a DC 3.7V voltage is applied to the lower end circuit;

FIG. 14 is a schematic diagram showing the comparison between the output waveforms of the upper end circuit and the vertical magnetoelectric velocity sensor after 80Hz vibration signals are collected after a DC 3.7V voltage is applied to the lower end circuit.

Description of the symbols of the drawings:

1. a lower cover; 2. a housing; 3. a connecting member; 4. a lower framework; 5. an upper magnetic shoe; 6. an upper cover; 7. a lower magnetic shoe; 8. dividing a magnetic ring; 9. mounting a framework; 10. magnetic steel; 11. an inner coil; 12. a lower end circuit positive leading-out terminal; 13. a negative leading-out terminal of the lower end circuit; 14. the positive pole of the upper end circuit leads out the terminal; 15. the negative leading-out terminal of the upper end circuit; 16. and an outer coil.

Detailed Description

The present invention is further described below with reference to the drawings and examples so that those skilled in the art can easily practice the present invention.

As shown in fig. 1, the present invention is provided with a magnetic conductive casing 2, which is connected with an upper cover 6 and a lower cover 1, wherein the upper cover 6 is provided with two leading-out terminals, one is an upper end positive leading-out terminal 14, and the other is an upper end negative leading-out terminal 15; the lower cover 1 has two lead terminals, namely a lower end positive lead terminal 12 and a lower end negative lead terminal 13.

A magnetic steel 10 is arranged in the sensor magnetic conduction shell 2, and the magnetic steel 10 is neodymium iron boron magnetic steel. The upper part of the magnetic steel 10 is connected with an upper magnetic shoe 5, the lower part of the magnetic steel 10 is connected with a lower magnetic shoe 7, a coil framework is arranged between the upper magnetic shoe 5 and the inner wall of the magnetic conduction shell 2, the upper end part of the coil framework is connected with the upper magnetic shoe 5 through an upper spring piece, and the lower end part of the coil framework is connected with the lower magnetic shoe 7 through a lower spring piece. The upper and lower ends of the magnetic steel 10 are also provided with sub-magnetic rings 8, and the sub-magnetic rings 8 are matched with the magnetic steel 10 for use so as to increase the temperature of the magnetic steel.

The coil framework in the sensor is divided into an upper framework 9 and a lower framework 4, winding windows are arranged on the upper framework 9 and the lower framework 4, and two paths of coils are wound on the winding windows and are respectively an outer coil 16 and an inner coil 11; go up and have draw-in groove and 2 to cross the wire casing on the skeleton 9, have draw-in groove, 2 to cross wire casing, 2 constant head tanks and 2 mounting holes on the lower skeleton 4, install 2 terminals on the mounting hole, the draw-in groove is used for fixed spring leaf, and the coil internal lead passes through the wire casing to the protection coil lead wire is not worn out absolutely. The inner layer coil 11 is divided into an upper layer and a lower layer which are respectively wound on the upper framework 9 and the lower framework 4, the winding directions of the coils wound on the upper framework 9 and the lower framework 4 are opposite, two ends of the inner layer coil are respectively welded with the inner ends of the binding posts, the outer ends of the binding posts are welded with one ends of lead springs, the other ends of the lead springs are welded on leading-out terminals of the lower cover, and a lower circuit positive leading-out terminal 12 and a lower circuit negative leading-out terminal 13 are respectively connected with the inner layer coil 11 of the sensor.

The outer coil 16 is wound on the inner coil 11 in the same layer, the winding directions of the two groups of coils wound on the upper framework 9 and the lower framework 4 are the same and opposite, the lead of the outer coil 16 is welded on the upper spring plate respectively and is connected with the two terminals of the upper end circuit through the upper inner and outer contact plates, so that the positive leading-out terminal 14 and the negative leading-out terminal 15 of the upper end circuit are connected with the outer coil 16 of the sensor.

Connecting part 3 made of insulating material is connected between sensor lower cover 1 and coil and lower magnetic shoe 7, cylindrical protrusions are arranged at the upper end and the lower end of connecting part 3, framework positioning devices are arranged on two sides of the middle of connecting part, the framework positioning devices are columnar protrusions, the root parts of the framework positioning devices are thick, the front ends of the framework positioning devices are thin, and the framework positioning devices are connected with positioning grooves on lower framework 4 to fix the position of the coil. The upper end bulge of the connecting part 3 is connected with the lower magnetic shoe 7, and the lower end bulge of the connecting part 3 is connected with the lower cover 1.

As shown in fig. 2-8, which are schematic diagrams of two-way output waveforms on an oscilloscope when the vibration signals of 80Hz, 40Hz, 20Hz, 10Hz, 5Hz, 3Hz and 2Hz are picked up, respectively, the upper waveform is a time domain diagram, the abscissa is time, the unit is second(s), and the ordinate is amplitude; the lower waveform is a frequency domain plot with frequency on the abscissa in hertz (Hz) and amplitude on the ordinate. Wherein the dark line represents the upper output curve and the light line represents the lower output curve.

As shown in fig. 9-14, which are schematic diagrams comparing output waveforms of the present invention after a direct current 3.7V voltage is applied to the lower end circuit and vibration signals of 2Hz, 3Hz, 5Hz, 10Hz, 20Hz, and 80Hz are collected by the upper end circuit and the vertical magnetoelectric velocity sensor, respectively, where the upper waveform is a time domain diagram, the abscissa is time, the unit thereof is second(s), and the ordinate is amplitude; the following waveforms are frequency domain plots with frequency on the abscissa: in hertz (Hz), and the ordinate is the amplitude. Wherein, the dark line is represented as a two-way structure magnetoelectric speed sensor, and the output waveform of the upper end circuit is obtained after a direct current 3.7V voltage is applied to the lower end circuit; the light color is the output waveform of the vertical magnetoelectric speed sensor. After the leading-out terminal of the lower end circuit is added with a direct current signal, the balance position of a coil in the magnetoelectric speed sensor can be changed, so that the vertical speed sensor can be used for measuring horizontal vibration signals, the horizontal speed sensor can be used for measuring vertical vibration signals, and the natural frequency of the vertical and horizontal dual-purpose machine core can be lowered to 5 Hz.

The above description is only for the purpose of illustrating preferred embodiments of the present invention and is not to be construed as limiting the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. All changes, equivalents, modifications and the like which come within the scope of the invention as defined by the appended claims are intended to be embraced therein.