CN217444039U - Electromagnetic mechanical matrix screen - Google Patents
Electromagnetic mechanical matrix screen Download PDFInfo
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- CN217444039U CN217444039U CN202220380135.5U CN202220380135U CN217444039U CN 217444039 U CN217444039 U CN 217444039U CN 202220380135 U CN202220380135 U CN 202220380135U CN 217444039 U CN217444039 U CN 217444039U
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Abstract
The utility model provides an electromagnetic machine matrix screen, include: a plurality of flip screen units arranged in an array, each of the flip screen units comprising: the turnover screen comprises a base, a double-color magnet piece arranged on the base, a first electromagnet support column and a second electromagnet support column arranged below the base, wherein enameled wire coils are wound on the first electromagnet support column and the second electromagnet support column respectively, the first electromagnet support column and the second electromagnet support column are connected with a control circuit board through the enameled wire coils, and magnetic poles are switched by controlling electromagnets through the control circuit board by utilizing a magnetic field effect so as to drive the double-color magnet piece arranged on the base, so that the two sides of the turnover screen are turned over.
Description
Technical Field
The utility model relates to a upset screen technical field, in particular to electromagnetic machinery matrix screen.
Background
The existing turnover screen has the following defects:
1. the turnover screen adopts a servo mode, the reaction is slow, the power consumption is large, and the servo is easy to damage after frequent turnover.
2. The turnover screen is magnetized by soft iron, and the soft iron has no magnetism after the current disappears, so that the soft iron magnetism must be kept at a certain current all the time, and the traditional turnover screen has large power consumption.
SUMMERY OF THE UTILITY MODEL
The purpose of the present invention is to solve at least one of the technical drawbacks.
Therefore, the utility model aims to provide an electromagnetism mechanical matrix screen.
In order to achieve the above object, an embodiment of the present invention provides an electromagnetic mechanical matrix screen, including: a plurality of flip screen units arranged in an array, each of the flip screen units comprising: the device comprises a base, a bicolor magnet piece arranged on the base, a first electromagnet support column and a second electromagnet support column arranged below the base, wherein enameled wire coils are respectively wound on the first electromagnet support column and the second electromagnet support column, the first electromagnet support column and the second electromagnet support column are connected with a control circuit board through the enameled wire coils, wherein,
the control circuit board includes: power supply circuit, controller, 485 communication circuit, forward conducting circuit, reverse conducting circuit, the controller with power supply circuit, 485 communication circuit, forward conducting circuit, reverse conducting circuit connect, first electro-magnet pillar with forward conducting circuit connects to receive and come from forward conducting circuit's forward enable current signal, the second electro-magnet pillar with reverse conducting circuit connects to receive and come from reverse conducting circuit's reverse enable current signal, wherein, forward enable current signal and reverse enable current signal are through the outside winding enameled wire coil magnetization of first electro-magnet pillar and second electro-magnet pillar, after first electro-magnet pillar and second electro-magnet pillar were magnetized, utilize magnetic field effect to pass through control circuit board control electro-magnet switching magnetic pole to the double-colored piece of drive installation above, the two sides of the turnover screen are turned over.
Furthermore, the first electromagnet support and the second electromagnet support adopt magnetic steel as magnetizing bodies.
Furthermore, the single-group module lattice number of the control circuit board is 32 points in the transverse direction and 16 points in the longitudinal direction, and the control circuit board is divided into two paths to drive simultaneously:
each path is 256 dot matrixes which are total of 8 rows and 32 columns;
each row line adopts 9 decoders to form row selection, and 64 row selection signals are output;
each row line adopts 2 decoders to form row selection, and 16 row selection signals are output;
each path is composed of 5 pieces of 8-path Darlington drivers to form an upper arm of an H bridge, and 5 pieces of 8-path NPN Darlington connected transistor array series are composed of a lower arm of the H bridge.
Further, the forward conducting circuit includes: the 8 way darlington driver with the decoder, wherein, 8 way darlington driver's input with the enameled wire coil connection of first electro-magnet pillar, 8 way darlington driver's output with the decoder is connected.
Further, the reverse conducting circuit includes: the 8 way darlington driver with the decoder, wherein, 8 way darlington driver's input with the enameled wire coil connection of second electro-magnet pillar, 8 way darlington driver's output with the decoder is connected.
Further, the power supply circuit includes: the PWM step-down type DC-DC conversion chip comprises a PWM step-down type DC-DC conversion chip and a three-terminal adjustable integrated voltage stabilizer, wherein the output end of the PWM step-down type DC-DC conversion chip is connected with the input end of the three-terminal adjustable integrated voltage stabilizer, and the output end of the three-terminal adjustable integrated voltage stabilizer is connected with the controller.
Further, the 485 communication circuit adopts an RS485 receiving and transmitting chip, and the RS485 receiving and transmitting chip is connected with the controller.
Further, the decoder adopts a decoder chip with the model 74HC 238; the 8-path Darlington driver adopts a chip of TD62783 AFG; the 8-path NPN Darlington connection transistor adopts a chip with the model number of ULN 2803.
Further, a PVC film is pasted on the surface of the double-color magnet piece.
Further, still include: and the switch key is connected with the control circuit board.
According to the utility model discloses electromagnetic machine matrix screen, include: the magnetic driving device comprises a bicolor magnet piece, an electromagnet and a control circuit, wherein the electromagnet is controlled by the control circuit to switch magnetic poles by utilizing the magnetic field effect, so that the bicolor magnet piece arranged on the electromagnet is driven. The magnet pieces are turned over to change colors, and the function of content display is achieved through matrix layout. The utility model has the characteristics of it is following: constant current driving, point-by-point seedling sweeping and power consumption reduction; the magnetic holding system keeps the state of the turnover screen after power failure; the electromagnet is made of alloy and can store magnetic force, display content can be maintained after power failure, and electric energy is not needed. The utility model discloses simple structure, operation are stable.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1a to 1d are mechanical structure diagrams of an electromagnetic mechanical matrix screen according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a power circuit according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a 485 communication circuit according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a controller according to an embodiment of the present invention;
fig. 5 is a circuit diagram of a switch button according to an embodiment of the present invention;
fig. 6 is a circuit diagram of a forward conducting circuit according to an embodiment of the present invention;
fig. 7 is a circuit diagram of a reverse conducting circuit according to an embodiment of the present invention;
fig. 8 is a circuit diagram of a single-point driving principle according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1a to fig. 1d, the utility model discloses an electromagnetic mechanical matrix screen, include: a plurality of flip screen units that are array-like arrangement, every flip screen unit includes: the base 4, install the double-colored magnet piece 3 on the base 4, install first electro-magnet pillar 1, the second electro-magnet pillar 2 in base 4 below, the winding has enameled wire coil 11 on first electro-magnet pillar 1, and the winding has enameled wire coil 12 on second electro-magnet pillar 2, and first electro-magnet pillar 1 and second electro-magnet pillar 2 pass through enameled wire coil and are connected with control circuit board.
In the embodiment of the utility model, the surface of the double-color magnet piece 3 is pasted with the PVC film. Specifically, PVC films of different colors can be pasted according to requirements.
The control circuit board includes: the device comprises a power supply circuit, a controller, a 485 communication circuit, a forward conducting circuit and a reverse conducting circuit.
In an embodiment of the present invention, as shown in fig. 2, the power circuit includes: the PWM step-down type DC-DC conversion chip comprises a PWM step-down type DC-DC conversion chip and a three-terminal adjustable integrated voltage stabilizer, wherein the output end of the PWM step-down type DC-DC conversion chip is connected with the input end of the three-terminal adjustable integrated voltage stabilizer, and the output end of the three-terminal adjustable integrated voltage stabilizer is connected with the controller. The utility model discloses a control driver constant current source driving source, the drive of constant current 500 milliamperes.
As shown in fig. 3, the 485 communication circuit adopts an RS485 transceiver chip, and the RS485 transceiver chip is connected with the controller.
Specifically, the controller is connected with a power supply circuit, a 485 communication circuit, a forward conducting circuit and a reverse conducting circuit, the first electromagnet support column 1 is connected with the forward conducting circuit to receive a forward enabling current signal from the forward conducting circuit, the second electromagnet support column 2 is connected with the reverse conducting circuit to receive a reverse enabling current signal from the reverse conducting circuit, wherein the forward enabling current signal and the reverse enabling current signal are magnetized through enameled wire coils wound outside the first electromagnet support column 1 and the second electromagnet support column 2, and after the first electromagnet support column 1 and the second electromagnet support column 2 are magnetized, the magnetic poles are switched through the control circuit board control electromagnet by utilizing a magnetic field effect to drive a double-color magnet piece 3 arranged on the first electromagnet support column, so that the two sides of the turnover screen are turned over. Fig. 4 is a circuit diagram of a controller according to an embodiment of the present invention.
In the embodiment of the present invention, the first electromagnet support 1 and the second electromagnet support 2 use magnetic steel as the magnetizing body.
The single-group module lattice number of the control circuit board is 32 transverse points, 16 longitudinal points, the size is 640 x 320mm, and the single-group modules can be cascaded.
The control circuit board is divided into two paths to drive simultaneously:
each path is 256 dot matrixes which are total of 8 rows and 32 columns;
each row line adopts 9 decoders to form row selection, and 64 row selection signals are output;
each row line adopts 2 decoders to form row selection, and 16 row selection signals are output;
each path is composed of 5 pieces of 8-path Darlington drivers to form an upper arm of an H bridge, and 5 pieces of 8-path NPN Darlington connected transistor array series are composed of a lower arm of the H bridge.
Each point is current-steered and isolated by two diodes the driving principle of one single point is shown in fig. 8.
In an embodiment of the present invention, the forward conducting circuit includes: and the 8-path Darlington driver and the decoder, wherein the input end of the 8-path Darlington driver is connected with the enameled wire coil of the first electromagnet support column 1, and the output end of the 8-path Darlington driver is connected with the decoder, as shown in fig. 6.
The reverse conducting circuit includes: and the 8-path Darlington driver and the decoder, wherein the input end of the 8-path Darlington driver is connected with the enameled wire coil of the second electromagnet support column 2, and the output end of the 8-path Darlington driver is connected with the decoder, as shown in fig. 7.
In the embodiment of the present invention, the decoder uses a decoder chip with a model 74HC 238; the 8-path Darlington driver adopts a chip of TD62783 AFG; the 8-way NPN Darlington connection transistor adopts a chip with the model number of ULN 2803.
The turnover screen adopts magnetic steel as a magnetizing body. The current passes through the outside winding coil of magnet steel and makes its magnetization, and after the magnet steel was magnetized, even its coil current withdrawed, still can keep the magnetic pole. The current direction is controlled by the H-bridge circuit to change the magnetization of the north and south poles, so that the two sides of the turnover screen are turned over. When the overturning screen needs to be overturned, the driver refreshes and magnetizes the magnetic steel instantly in the time of 250 microseconds at 500 milliamperes, scans and magnetizes the next point, enters a standby state after the driver finishes refreshing and magnetizing of the whole single-group module, reduces the power consumption and waits for the next refreshing request.
The PC upper computer sends a control signal to the control IC and sends a signal to the decoder, and then the driver chip is driven to enable + current to flow from the coil 11 to the coil 12 so as to magnetize the first electromagnet support 1 and the second electromagnet support 2, at the moment, the magnetic pole at the top end of the first electromagnet support 1 is N, the magnetic pole at the top end of the first electromagnet support 2 is S, and the magnetic sheets, the first electromagnet support 1 and the second electromagnet support 2 generate magnetic force to realize overturning.
Furthermore, the utility model discloses electromagnetic machine matrix screen still includes: and the switch key is connected with the control circuit board, as shown in fig. 5. Wherein, the switch key is realized by a dial switch.
According to the utility model discloses electromagnetic machine matrix screen, include: the magnetic driving device comprises a bicolor magnet piece, an electromagnet and a control circuit, wherein the electromagnet is controlled by the control circuit to switch magnetic poles by utilizing the magnetic field effect, so that the bicolor magnet piece arranged on the electromagnet is driven. The magnet pieces are turned over to change colors, and the function of content display is achieved through matrix layout. The utility model has the characteristics of it is following: constant current driving, point-by-point seedling sweeping and power consumption reduction; the magnetic holding system keeps the state of the turnover screen after power failure; the electromagnet is made of alloy and can store magnetic force, display content can be maintained after power failure, and electric energy is not needed. The utility model discloses simple structure, operation are stable.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. An electromagnetic mechanical matrix screen, comprising: a plurality of flip screen units arranged in an array, each of the flip screen units comprising: the device comprises a base, a bicolor magnet piece arranged on the base, a first electromagnet support column and a second electromagnet support column arranged below the base, wherein enameled wire coils are respectively wound on the first electromagnet support column and the second electromagnet support column, the first electromagnet support column and the second electromagnet support column are connected with a control circuit board through the enameled wire coils, wherein,
the control circuit board includes: power supply circuit, controller, 485 communication circuit, forward conducting circuit, reverse conducting circuit, the controller with power supply circuit, 485 communication circuit, forward conducting circuit, reverse conducting circuit connect, first electro-magnet pillar with forward conducting circuit connects to receive and come from forward conducting circuit's forward enable current signal, the second electro-magnet pillar with reverse conducting circuit connects to receive and come from reverse conducting circuit's reverse enable current signal, wherein, forward enable current signal and reverse enable current signal are through the outside winding enameled wire coil magnetization of first electro-magnet pillar and second electro-magnet pillar, after first electro-magnet pillar and second electro-magnet pillar were magnetized, utilize magnetic field effect to pass through control circuit board control electro-magnet switching magnetic pole to the double-colored piece of drive installation above, the two sides of the turnover screen are turned over.
2. The electromechanical matrix screen of claim 1 wherein the first and second electromagnet legs comprise magnetic steel as a magnetizing body.
3. The electromagnetic mechanical matrix screen of claim 1, wherein the single set of modules of the control circuit board has 32 horizontal dots and 16 vertical dots, and the control circuit board is divided into two paths to drive simultaneously:
each path is 256 dot matrixes which are total of 8 rows and 32 columns;
each row line adopts 9 decoders to form row selection, and 64 row selection signals are output;
each row line adopts 2 decoders to form row selection, and 16 row selection signals are output;
each path is composed of 5 pieces of 8-path Darlington drivers to form an upper arm of an H bridge, and 5 pieces of 8-path NPN Darlington connected transistor array series are composed of a lower arm of the H bridge.
4. The electromechanical matrix screen of claim 3, wherein the forward conducting circuit comprises: the 8 way darlington driver with the decoder, wherein, 8 way darlington driver's input with the enameled wire coil connection of first electro-magnet pillar, 8 way darlington driver's output with the decoder is connected.
5. The electromagnetic mechanical matrix screen of claim 3, wherein the reverse conducting circuit comprises: the 8 way darlington driver with the decoder, wherein, 8 way darlington driver's input with the enameled wire coil connection of second electro-magnet pillar, 8 way darlington driver's output with the decoder is connected.
6. The electromagnetic mechanical matrix screen of claim 1 wherein the power circuit comprises: the PWM step-down type DC-DC conversion chip comprises a PWM step-down type DC-DC conversion chip and a three-terminal adjustable integrated voltage stabilizer, wherein the output end of the PWM step-down type DC-DC conversion chip is connected with the input end of the three-terminal adjustable integrated voltage stabilizer, and the output end of the three-terminal adjustable integrated voltage stabilizer is connected with the controller.
7. The electromechanical matrix screen of claim 1, wherein the 485 communication circuit employs an RS485 transceiver chip, and the RS485 transceiver chip is connected to the controller.
8. The electromagnetic mechanical matrix panel of claim 3 wherein the decoder is a decoder chip of type 74HC 238; the 8-path Darlington driver adopts a chip of TD62783 AFG; the 8-path NPN Darlington connection transistor adopts a chip with the model of ULN 2803.
9. The electromechanical matrix screen of claim 1 wherein a PVC film is applied to the surface of the two-color magnet pieces.
10. The electromagnetic mechanical matrix screen of claim 1, further comprising: and the switch key is connected with the control circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220380135.5U CN217444039U (en) | 2022-02-24 | 2022-02-24 | Electromagnetic mechanical matrix screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220380135.5U CN217444039U (en) | 2022-02-24 | 2022-02-24 | Electromagnetic mechanical matrix screen |
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| Publication Number | Publication Date |
|---|---|
| CN217444039U true CN217444039U (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220380135.5U Active CN217444039U (en) | 2022-02-24 | 2022-02-24 | Electromagnetic mechanical matrix screen |
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| CN (1) | CN217444039U (en) |
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- 2022-02-24 CN CN202220380135.5U patent/CN217444039U/en active Active
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