CN213582946U - Magnetic current display - Google Patents
Magnetic current display Download PDFInfo
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- CN213582946U CN213582946U CN202022672628.XU CN202022672628U CN213582946U CN 213582946 U CN213582946 U CN 213582946U CN 202022672628 U CN202022672628 U CN 202022672628U CN 213582946 U CN213582946 U CN 213582946U
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- electromagnet
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- magnetic fluid
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Abstract
The utility model provides a magnetic current display, belonging to the display preparation field, comprising an outer cover, a display body, an electromagnet lattice unit and a controller; a magnetic fluid and a carrier liquid are arranged in a quartz glass shell of the display body; the electromagnet lattice unit is arranged at the back of the quartz glass shell and comprises an electromagnet array and a switching triode array; a plurality of mounting holes are formed in the acrylic plate of the electromagnet array, an electromagnet is arranged in each mounting hole, and the electromagnets are abutted to the quartz glass shell; the switching triode array is arranged on the back of the electromagnet lattice unit and comprises a circuit board and a plurality of switching triodes arranged on the circuit board; a switching transistor controls an electromagnet; and the switching triodes are connected with the signal end of the controller through wires. The display can be seen by naked eyes by utilizing the contrast generated by the color of the magnetic fluid and the background color of the background plate, so that the visual damage can not be caused, and the visual experience of people in a healthier state can be brought.
Description
Technical Field
The utility model belongs to display preparation field, concretely relates to magnetic current display.
Background
The traditional display, especially the CRT display, can produce relatively large electromagnetic radiation, which has certain influence on human body. Moreover, the blue light commonly found in conventional displays, such as the flashing screens of LED displays, is damaging to the eye and can cause permanent damage after long-term use.
The magnetic fluid is also called magnetic liquid, is a liquid functional material, and is generally a relatively uniform and stable colloid formed by dispersing certain ferromagnetic nano particles in a certain liquid carrier. The initial research on the magnetic fluid aims to solve the sealing problem of the spacecraft, and the magnetic fluid has the characteristics of paramagnetism, fluidity and the like so as to be widely applied to the fields of vacuum dynamic sealing, continuous lubrication of instruments, targeted drug delivery carriers, mineral separation, water resource protection and the like. The existing magnetofluid clock on the market uses a mechanical driving permanent magnet to control and display numbers, the displayed characters are usually fixed, and the mechanical movement relates to a complex control movement program. There is no precedent in the prior art for combining a magnetic fluid with a display.
The present application thus proposes a magneto-fluidic display.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects existing in the prior art, the utility model provides a magnetic current display.
In order to achieve the above object, the present invention provides the following technical solutions:
a magnetic current display comprises an outer cover, a display body arranged at the front end of the outer cover, an electromagnet lattice unit and a controller, wherein the electromagnet lattice unit and the controller are arranged in the outer cover;
the display body comprises a quartz glass shell with a cuboid structure, and magnetic fluid and carrier liquid are arranged in the quartz glass shell;
the electromagnet lattice unit is arranged at the back of the quartz glass shell and comprises an electromagnet array and a switching triode array; the electromagnet array comprises an acrylic plate, a plurality of mounting holes are formed in the acrylic plate, an electromagnet is arranged in each mounting hole, and the electromagnets are abutted to the quartz glass shell; the switching triode array is arranged on the back of the electromagnet lattice unit and comprises a circuit board and a plurality of switching triodes arranged on the circuit board; one said switching transistor controlling one said electromagnet;
and the switching triodes are connected with the signal end of the controller through a lead.
Preferably, in a static state, the magnetic fluid and the carrier liquid are distributed in a layered mode, and the magnetic fluid is under the carrier liquid; under the non-static state, the magnetic fluid is attracted by the electromagnet to move in an oil drop shape.
Preferably, the number of the electromagnets is 56, wherein 52 electromagnets form four parts of 8-shaped electromagnet array units which are arranged in the same manner, and each 8-shaped electromagnet array unit comprises 13 electromagnets; 4 electromagnets which are individually arranged in a row are arranged in the middle of the four 8-shaped electromagnet array units and are in 1-shaped electromagnet array units; two adjacent electromagnets are arranged in a state of opposite polarity.
Preferably, the distance between each electromagnet array unit is 1 cm; the circle centers of three electromagnets in the odd-numbered rows of each 8-shaped electromagnet array unit are respectively 14mm apart, the circle centers of two electromagnets in the even-numbered rows are respectively 28mm apart, and the circle centers of electromagnets in the same row are respectively 14mm or 28mm apart; the circle centers of 4 electromagnets of the 1-shaped electromagnet array unit are respectively 14mm apart.
Preferably, the controller is a plurality of arduino single-chip microcomputers, and each 8-shaped electromagnet array unit or 1-shaped electromagnet array unit controls the on-off of the electromagnet through one arduino single-chip microcomputer respectively to realize the adsorption of the magnetic fluid; every the base of switch triode through a 1K resistance with arduino singlechip port is connected, collecting electrode and one the positive pole or the negative pole of electro-magnet are connected, and the collecting electrode ground connection.
Preferably, the component of the magnetic fluid comprises nanoscale ferroferric oxide Fe3O4And a surfactant, the carrier liquid having a composition that is water-based.
Preferably, the surfactant is oleic acid C18H34O2。
Preferably, the quartz glass envelope has dimensions of 250mm × 102mm × 10 mm.
Preferably, the device further comprises a power supply module, and the power supply module supplies power to the controller and the electromagnet.
The utility model provides a magnetic current display has following beneficial effect:
(1) the display can be seen by naked eyes by utilizing the contrast generated by the color of the magnetic fluid and the background color of the background plate, so that the visual damage can not be caused, and the visual experience of people in a healthier state can be brought.
(1) The display adopts a dot matrix form, has fewer and more simplified mechanical parts, is light and silent, and greatly reduces the cost.
(2) The power supply used by the display is approximately controlled to be 5V-12V, the current is small, the generated electromagnetic wave is small, the display screen bearing the magnetic fluid does not generate the electromagnetic wave, and the size of the electromagnetic wave can be ignored theoretically.
(3) The display uses magnetic functional material-magnetofluid as display material, and uses the action of magnetofluid and magnetic field and the self-flowability of magnetofluid to make it display specific characters or patterns by means of external lattice type magnetic field. And due to the fluidity of the magnetic fluid, the magnetic fluid can always present a cluster-shaped appearance similar to patterns under the action of a magnetic field in the process of forming the pattern, so that the magnetic fluid is very dynamic and interesting. Compared with the magnetofluid decompression toy manually controlled by the permanent magnet on the market, the magnetofluid display overcomes the defects of single playing method and simple shape.
Drawings
In order to more clearly illustrate the embodiments of the present invention and the design thereof, the drawings required for the embodiments will be briefly described below. The drawings in the following description are only some embodiments of the invention, and it will be clear to a person skilled in the art that other drawings can be obtained on the basis of these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a magnetic fluid display according to embodiment 1 of the present invention;
FIG. 2 is an exploded view of the display body and the array of electromagnet lattice units;
FIG. 3 shows the layout of an "8" shaped electromagnet array unit;
FIG. 4 shows the direction of movement of the magnetic fluid;
FIG. 5 is a circuit diagram of a switching transistor array of an "8" shaped electromagnet array unit;
fig. 6 is a working schematic diagram of the magnetic fluid display according to embodiment 1 of the present invention.
Description of reference numerals:
the device comprises an outer cover 1, a controller 2, a quartz glass shell 3, a magnetic fluid 4, a power module 5, an acrylic plate 6, an electromagnet 7, a circuit board 8 and a switching triode 9.
Detailed Description
In order to make the technical solution of the present invention better understood and practical for those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the technical solutions of the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. In the description of the present invention, unless otherwise specified, "a plurality" means two or more, and will not be described in detail herein.
Example 1
The utility model provides a magnetic current display, as shown in figures 1 to 5, comprising an outer cover 1, a display body arranged at the front end of the outer cover 1, and an electromagnet lattice unit row and a controller 2 arranged in the outer cover 1;
the display body includes the quartz glass shell 3 of cuboid structure, and quartz glass shell 3 bonds each other through polylith quartz glass and forms a confined cavity structures, and quartz glass finish is high, is difficult for the viscous oil, and is clean and tidy, and quartz glass shell 3's size is 250mm x 102mm x 10mm in this embodiment. A magnetic fluid 4 and a carrier fluid are arranged in the quartz glass shell 3; under the static state, the magnetic fluid 4 and the carrier liquid are distributed in a layered manner, and the magnetic fluid 4 is arranged on the lower layer of the carrier liquid; in the non-stationary state, the magnetic fluid 4 is attracted by the electromagnet 7 to move in an oil-drop shape.
The electromagnet lattice unit column is arranged at the back of the quartz glass shell 3 and comprises an electromagnet array and a switching triode array; the electromagnet array comprises an acrylic plate 6, a plurality of mounting holes are formed in the acrylic plate 6, an electromagnet 7 is arranged in each mounting hole, and the electromagnets 7 are abutted to the quartz glass shell 3; the switching triode array is arranged at the back of the electromagnet lattice unit column and comprises a circuit board 8 and a plurality of switching triodes 9 arranged on the circuit board 8; a switching transistor 9 controls an electromagnet 7; the display selection switch triode 9 has good heat resistance and can bear enough current to maintain the operation of the whole system. The voltage output by the port of the single chip meets the requirement, thereby achieving the purpose of control. In order to ensure that the voltage obtained by the electromagnet 7 is large enough, the electromagnet 7 is connected between the switching triode 9 and the VCC in series, the on-off of the current of the singlechip is controlled by using codes, the VCC is further switched on and off as required, and the large enough voltage current is applied to the electromagnet 7. In order to prevent the large current from flowing back to the singlechip and the singlechip from being damaged when the singlechip operates for a long time, the invention connects a 1k omega resistor in series between the port of the singlechip and the base of the switching triode 9 to protect the singlechip.
The switching triodes 9 are all connected with the signal end of the controller 2 through a lead.
Specifically, in this embodiment, the number of the electromagnets 7 is 56, wherein 52 electromagnets 7 form four parts of "8" shaped electromagnet array units arranged identically, as shown in fig. 3, each "8" shaped electromagnet array unit includes 13 electromagnets 7; 4 electromagnets 7 which are individually arranged in a row are arranged in the middle of the 8-shaped electromagnet array unit of the four parts and are in a 1-shaped electromagnet array unit; two adjacent electromagnets 7 are arranged in a state of opposite polarity. The distance between each electromagnet array unit is 1 cm; the circle centers of the three electromagnets 7 in the odd rows of each 8-shaped electromagnet array unit are respectively 14mm apart, the circle centers of the two electromagnets 7 in the even rows are respectively 28mm apart, and the circle centers of the electromagnets 7 in the same row are respectively 14mm or 28mm apart; the circle centers of 4 electromagnets 7 of the 1-shaped electromagnet array unit are respectively 14mm apart, and the magnetic fluid 4 moves up and down left and right under the magnetic action. As shown in fig. 4, the large circles indicate the magnetic poles of the electromagnet 7, the arrows indicate the case where the magnetic fluid 4 in the middle can move, and the arrows with forbidden symbols indicate that the magnetic fluid 4 cannot move in this way. Namely: the magnetic fluid 4 can only move under the action of the adjacent electromagnets 7 with opposite polarities.
Further, in this embodiment, the controller 2 is a plurality of arduino single-chip microcomputers, as shown in fig. 5, each "8" -shaped electromagnet array unit or each "1" -shaped electromagnet array unit controls the on/off of the electromagnet 7 through one arduino single-chip microcomputer, so as to realize the adsorption of the magnetic fluid 4; the base electrode of each switching triode 9 is connected with the port of the arduino single chip microcomputer through a 1K resistor, the collector electrode is connected with the positive electrode or the negative electrode of an electromagnet 7, and the collector electrode is grounded. The arduino singlechip reaches the break-make of control steady voltage through switch triode 9, and the steady voltage electric current only forms the return circuit when arduino singlechip signal passes through switch triode 9, makes 7 work of electro-magnet.
Further, in the present embodiment, the magnetic fluid 4 comprises nanoscale ferroferric oxide Fe3O4And a surfactant, the carrier liquid being water-based in composition. Specifically, the surfactant selected in this example was oleic acid C18H34O2。
Meanwhile, the embodiment also provides a power module 5, the power supply is approximately controlled at 5V, the power module 5 supplies power to the controller 2 and the electromagnet 7, 12V is supplied to the electromagnet, and the singlechip is 5V.
As shown in fig. 6, the magnetic fluid display provided in this embodiment operates according to the following principle:
the arduino single chip microcomputer converts information such as character coordinates to be displayed, the flowing process of the magnetic fluid 4 and the like into a high-low level state of an output port of the latch set, and the display selects the electromagnet 7 dot matrix, so that each electromagnet 7 in the dot matrix can be controlled to generate magnetic force or not through power on and off, the magnetic fluid 4 is attracted or released by a specific point, and graphical display is achieved. Specifically, a high level is applied to the switching triode 9, the switching triode 9 can enable a proper large current to flow through the electromagnet 7 to enable the electromagnet 7 to work, a low level cannot act on the switching triode 9 to enable the large current to pass through, and the electromagnet 7 does not work, so that the purpose of changing the working state of the electromagnet 7 by controlling the on-off of the voltage-stabilized power supply is achieved. When the adjacent heteropolar electromagnets 7 work simultaneously, the magnetic fluid 4 can be connected into a straight line under the action of the electromagnets, when one of the electromagnets 7 is powered off, the magnetic fluid 4 at the position is not attracted and is concentrated towards the position of the adjacent heteropolar electromagnet 7 or is not connected by the straight line sinking under the self gravity, and even restores to a point shape. When all the electromagnets 7 stop working, the magnetic fluid 4 is totally sunk to the bottom due to the self gravity.
The above embodiments are only preferred embodiments of the present invention, the scope of protection of the present invention is not limited thereto, and any person skilled in the art can obviously obtain simple changes or equivalent replacements of the technical solutions within the technical scope of the present invention.
Claims (7)
1. The magnetic fluid display is characterized by comprising an outer cover (1), a display body arranged at the front end of the outer cover (1), and an electromagnet lattice unit row and a controller (2) arranged in the outer cover (1);
the display body comprises a quartz glass shell (3) with a cuboid structure, and a magnetic fluid (4) and a carrier liquid are arranged in the quartz glass shell (3);
the electromagnet lattice unit column is arranged at the back of the quartz glass shell (3) and comprises an electromagnet array and a switch triode array; the electromagnet array comprises an acrylic plate (6), a plurality of mounting holes are formed in the acrylic plate (6), an electromagnet (7) is arranged in each mounting hole, and the electromagnets (7) are abutted to the quartz glass shell (3); the switching triode array is arranged at the back of the electromagnet lattice unit column and comprises a circuit board (8) and a plurality of switching triodes (9) arranged on the circuit board (8); -one said switching transistor (9) controls one said electromagnet (7);
and the switching triodes (9) are connected with the signal end of the controller (2) through a lead.
2. The display according to claim 1, wherein in a rest state, the magnetic fluid (4) is layered with the carrier liquid, the magnetic fluid (4) being in a lower layer of the carrier liquid; under the non-static state, the magnetic fluid (4) is attracted by the electromagnet (7) to move in an oil drop shape.
3. The display according to claim 1, wherein the number of electromagnets (7) is 56, wherein 52 electromagnets (7) form four equally arranged electromagnet array units having a shape like a figure 8, each electromagnet array unit having a shape like a figure 8 comprising 13 electromagnets (7); 4 electromagnets (7) which are individually arranged in a row are arranged in the middle of the four 8-shaped electromagnet array units and are 1-shaped electromagnet array units; two adjacent electromagnets (7) are arranged in a state of opposite polarity.
4. The magnetic fluid display of claim 3, wherein the distance between each electromagnet array element is 1 cm; the circle centers of the three electromagnets (7) in the odd rows of each 8-shaped electromagnet array unit are respectively 14mm apart, the circle centers of the two electromagnets (7) in the even rows are respectively 28mm apart, and the circle centers of the electromagnets (7) in the same row are respectively 14mm or 28mm apart; the circle centers of 4 electromagnets (7) of the 1-shaped electromagnet array unit are respectively 14mm apart.
5. The magnetic fluid display according to claim 4, wherein the controller (2) is a plurality of arduino single-chip microcomputers, and each of the 8-shaped electromagnet array units or the 1-shaped electromagnet array units controls the on-off of the electromagnet (7) through one arduino single-chip microcomputer respectively to realize the adsorption of the magnetic fluid (4); every the base of switch triode (9) through a 1K resistance with arduino singlechip port is connected, collecting electrode and one the positive pole or the negative pole of electro-magnet (7) are connected, and the collecting electrode ground connection.
6. Magnetohydrodynamic display according to claim 1, characterized in that the quartz glass envelope (3) has dimensions of 250mm x 102mm x 10 mm.
7. The magnetic fluid display according to claim 1, further comprising a power module (5), said power module (5) powering said controller (2) and electromagnet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022672628.XU CN213582946U (en) | 2020-11-18 | 2020-11-18 | Magnetic current display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022672628.XU CN213582946U (en) | 2020-11-18 | 2020-11-18 | Magnetic current display |
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| Publication Number | Publication Date |
|---|---|
| CN213582946U true CN213582946U (en) | 2021-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022672628.XU Expired - Fee Related CN213582946U (en) | 2020-11-18 | 2020-11-18 | Magnetic current display |
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| CN (1) | CN213582946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113805506A (en) * | 2021-08-24 | 2021-12-17 | 杭州日光之上科技有限公司 | Magnetofluid music device and control method thereof |
-
2020
- 2020-11-18 CN CN202022672628.XU patent/CN213582946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113805506A (en) * | 2021-08-24 | 2021-12-17 | 杭州日光之上科技有限公司 | Magnetofluid music device and control method thereof |
| CN113805506B (en) * | 2021-08-24 | 2023-08-18 | 杭州日光之上科技有限公司 | Magnetic fluid music device and control method thereof |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210629 Termination date: 20211118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |