CN116597770B - Interactive wisdom LED display screen - Google Patents
Interactive wisdom LED display screen Download PDFInfo
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- CN116597770B CN116597770B CN202310455498.XA CN202310455498A CN116597770B CN 116597770 B CN116597770 B CN 116597770B CN 202310455498 A CN202310455498 A CN 202310455498A CN 116597770 B CN116597770 B CN 116597770B
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- 230000002452 interceptive effect Effects 0.000 title claims abstract description 39
- 238000004891 communication Methods 0.000 claims abstract description 40
- 230000003993 interaction Effects 0.000 claims abstract description 37
- 238000005457 optimization Methods 0.000 claims abstract description 4
- 230000006698 induction Effects 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 22
- 238000002955 isolation Methods 0.000 claims description 18
- 230000005674 electromagnetic induction Effects 0.000 claims description 16
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 230000000087 stabilizing effect Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 2
- 230000005669 field effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
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- 238000012545 processing Methods 0.000 description 3
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- 102100037566 RNA/RNP complex-1-interacting phosphatase Human genes 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/082—Configuration setting characterised by the conditions triggering a change of settings the condition being updates or upgrades of network functionality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Computational Linguistics (AREA)
- Acoustics & Sound (AREA)
- Theoretical Computer Science (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Circuit For Audible Band Transducer (AREA)
- Amplifiers (AREA)
Abstract
The invention relates to the field of electronic display screens, and provides an interactive intelligent LED display screen which comprises a laser projection interactive circuit, an audio circuit, an LED display screen unit board circuit, a main control circuit and a communication circuit, wherein an information end of the laser projection interactive circuit is connected with a data end of the main control circuit, user interaction information is sent and corresponding feedback is made through the main control circuit, an output end of the audio circuit is connected with an input end of the main control circuit, a voice instruction of a user is received, an input end of the LED display screen unit board circuit is connected with a display output end of the main control circuit, the data information sent by the main control circuit is displayed, a signal end of the main control circuit is connected with a data end of the communication circuit, and a user controls the main control circuit through the communication circuit to realize remote upgrading optimization; the invention can realize an interactive intelligent LED display screen.
Description
Technical Field
The invention relates to the field of electronic display screens, in particular to an interactive intelligent LED display screen.
Background
The LED display is a video display, so in our life, we can often see the application of the LED display, such as a billboard, a warning sign, or a large LED display used in a market, etc., while the LED display is of a wide variety, but is rarely used as an entertainment type or an LED display with strong interactivity, and at the same time, the interactive LED display is a relatively energy-saving LED display, which has man-machine interaction function and entertainment function, and the interaction mode of the current interactive LED display system is limited to human body sensing and image acquisition, etc., which is relatively traditional, slow in recognition and poor in interaction experience.
Disclosure of Invention
The invention solves the problem of providing an interactive intelligent LED display screen with various identification modes and various interaction modes.
In order to solve the problems, the invention provides an interactive intelligent LED display screen, which comprises a laser projection interactive circuit, an audio circuit, an LED display screen unit board circuit, a main control circuit and a communication circuit, wherein an information end of the laser projection interactive circuit is connected with a data end of the main control circuit, user interaction information is sent and corresponding feedback is made through the main control circuit, an output end of the audio circuit is connected with an input end of the main control circuit, a voice instruction of a user is received, an input end of the LED display screen unit board circuit is connected with a display output end of the main control circuit, data information sent by the main control circuit is displayed, a signal end of the main control circuit is connected with a data end of the communication circuit, and a user controls the main control circuit to realize remote upgrading optimization through the communication circuit.
Further, the laser projection interaction circuit comprises a laser driving circuit and an interaction induction circuit, wherein the input end of the laser driving circuit is connected with the control end of the main control circuit to control the intensity and shape of laser, and the output end of the interaction induction circuit is connected with the input end of the main control circuit to receive limb information of a user.
Further, the interactive induction circuit comprises an infrared induction circuit, an image acquisition circuit and an electromagnetic induction circuit, wherein the output end of the infrared induction circuit is connected with the input end of the main control circuit, the data end of the image acquisition circuit is connected with the input end of the main control circuit, and the voltage end of the electromagnetic induction circuit is connected with the input end of the main control circuit.
Further, the electromagnetic induction circuit comprises a first inductor, a third filter circuit, a first operational amplifier, a first feedback resistor, a third RC filter circuit, a fifth pull-down resistor, a second operational amplifier, a second feedback resistor, a third voltage dividing circuit, a second triode, a fourth current limiting resistor and a first light emitting diode, wherein the first inductor is connected with the inverting input end of the first operational amplifier through the third filter circuit, the inverting input end of the first operational amplifier is connected with the output end of the first operational amplifier through the first feedback resistor, a 5V power supply is connected with the non-inverting input end of the first operational amplifier through the third RC filter circuit, the output end of the first operational amplifier is connected with the inverting input end of the second operational amplifier through the fifth pull-down resistor and the ground, the inverting input end of the second operational amplifier is connected with the output end of the second operational amplifier through the second feedback resistor, the output end of the second operational amplifier is connected with the third triode and the third triode, and the collector electrode of the fourth triode is connected with the current limiting resistor.
Further, the audio circuit comprises an audio acquisition circuit and an audio amplification circuit, wherein the output end of the audio acquisition circuit is connected with the input end of the main control circuit, and the input end of the audio amplification circuit is connected with the output end of the main control circuit.
Further, the audio amplifying circuit includes a fifth filter circuit, a fifth operational amplifier, a second feedback circuit, a sixth operational amplifier, a third feedback circuit, a first slide rheostat, a second slide rheostat, a first isolation circuit, a first audio power amplifying chip, a first gain circuit, a second audio power amplifying chip, a second gain circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a first loudspeaker and a second loudspeaker, the fifth filter circuit is respectively connected with the non-inverting input ends of the fifth operational amplifier and the sixth operational amplifier, the inverting input end of the fifth operational amplifier is connected with the output end of the sixth operational amplifier through the second feedback circuit, the inverting input end of the sixth operational amplifier is connected with the output end of the sixth operational amplifier through the third feedback circuit, the output ends of the fifth operational amplifier and the sixth operational amplifier are respectively connected with the first slide rheostat, the second slide rheostat and the first isolation circuit, the first isolation circuit is respectively connected with the non-inverting input ends of the first audio power amplifying chip and the second audio power amplifying chip, the inverting input ends of the first audio amplifier chip are respectively connected with the inverting input ends of the first amplifier chip and the second amplifier through the inverting input ends of the first amplifier chip and the second amplifier.
Furthermore, the input end of the LED display screen unit board circuit is connected with the output end of the main control circuit, and the LED display screen unit board circuits are provided with a plurality of groups, so that display screens with different sizes and specifications can be formed.
Further, the input end of the main control circuit is connected with the output end of the electromagnetic induction circuit to obtain electromagnetic induction data of each position, the output end of the main control circuit is connected with the input end of the audio amplification circuit, and corresponding music and voice are played according to the user state to improve interactive fun.
Furthermore, the data end of the communication circuit is connected with the signal end of the main control circuit, the main control circuit realizes remote upgrading and content changing through the communication circuit, and the communication circuit is connected with the server to realize AI intelligent interaction.
Further, the power supply circuit is also included.
Compared with the prior art, the invention has the beneficial effects that:
The interactive intelligent LED display screen optimizes the defects of the existing interactive LED display screen system, the method of various identification modes and various interaction modes is adopted in the design, the identification speed is improved, the user interaction pleasure is increased, the infrared sensing circuit, the image acquisition circuit and the electromagnetic induction circuit which are contained in the laser projection interaction circuit enable equipment to capture various information of a user more accurately and comprehensively through three different sensing modes, a basis is provided for better interaction experience in the back, the input ends of the LED display screen unit board circuit and the audio circuit are connected with the output end of the main control circuit, dynamic information of the user is obtained through the laser projection interaction circuit, the interactive picture is displayed through the LED display screen unit board circuit and the audio circuit, the playing interaction voice is increased through various interaction modes, the signal end of the main control circuit is connected with the data end of the communication circuit, the equipment can be upgraded remotely through the communication circuit, the cloud can be connected with the server through the communication circuit, and the diversity and the degree of interaction of the equipment operation capability is improved.
Drawings
FIG. 1 is a schematic block diagram of an interactive intelligent LED display screen according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a laser driving circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of an infrared sensing circuit according to the present invention;
FIG. 4 is a schematic diagram of the principle structure of an image acquisition circuit according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an electromagnetic induction circuit according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the principle structure of an audio acquisition circuit according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the audio amplifying circuit according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a schematic circuit structure of an LED display unit board according to an embodiment of the invention;
FIG. 9 is a schematic diagram of a main control circuit according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a communication circuit according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a power circuit according to an embodiment of the invention.
Reference numerals illustrate:
1-a laser projection interaction circuit; 11-a laser driving circuit; 12-an interactive induction circuit; 121-an infrared sensing circuit; 122-an image acquisition circuit; 123-electromagnetic induction circuitry; a 2-audio circuit; 21-an audio acquisition circuit; 22-an audio amplifying circuit; 3-LED display screen unit board circuit; 4-a master control circuit; a 5-communication circuit; 6-power supply circuit.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present specification, the descriptions of the terms "embodiment," "one embodiment," and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or illustrated embodiment of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same examples or implementations. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or implementations.
The embodiment of the invention provides a laser projection interactive circuit 1, an audio circuit 2, an LED display screen unit board circuit 3, a main control circuit 4 and a communication circuit 5, wherein an information end of the laser projection interactive circuit 1 is connected with a data end of the main control circuit 4, user interaction information is sent and corresponding feedback is made through the main control circuit 4, an output end of the audio circuit 2 is connected with an input end of the main control circuit 4, a voice instruction of a user is received, an input end of the LED display screen unit board circuit 3 is connected with a display output end of the main control circuit 4, data information sent by the main control circuit 4 is displayed, a signal end of the main control circuit 4 is connected with a data end of the communication circuit 5, and the user controls the main control circuit 4 through the communication circuit 5 to realize remote upgrading optimization.
It should be noted that, as shown in fig. 1, the interactive intelligent LED display screen optimizes the defects of the current interactive LED display screen system, the design adopts methods of multiple recognition modes and multiple interaction modes to improve recognition speed and increase user interaction pleasure, the infrared sensing circuit, the image acquisition circuit and the electromagnetic sensing circuit contained in the laser projection interaction circuit enable equipment to capture various information of users more accurately and comprehensively through three different sensing modes, provide a basis for better interaction experience at the back, the input ends of the LED display screen unit board circuit and the audio circuit are connected with the output end of the main control circuit, dynamic information of the users is obtained through the laser projection interaction circuit, and the interactive pictures and the interactive voice are displayed through the LED display screen unit board circuit and the audio circuit, the playability of the equipment is increased through multiple interaction modes, the signal end of the main control circuit is connected with the data end of the communication circuit, the system can be upgraded remotely through the communication circuit, and the cloud end of the communication circuit is connected with the server, and the diversity and the precision of the interaction of the equipment operation capability is increased can be improved.
In one embodiment of the present invention, the laser projection interaction circuit 1 includes a laser driving circuit 11 and an interaction sensing circuit 12, wherein an input end of the laser driving circuit 11 is connected with a control end of the main control circuit 4 to control intensity and shape of laser, and an output end of the interaction sensing circuit 12 is connected with an input end of the main control circuit 4 to receive limb information of a user.
It should be noted that, as shown in fig. 2, the laser driving circuit includes a first current mode converter, a first power supply filter capacitor, a first current limiting resistor, a first pull-up resistor, a first photo coupler, a first RC filter circuit, a first MOS transistor, a first filter circuit, a first triode, a first diode, a first pull-down resistor, and a first laser emitting circuit, where the first current mode converter U89 adopts an LT3518EFE, a current mode DC/DC converter with 2.3A and 45V switches inside, is designed specifically for driving LEDs, functions as an LED driver, can operate in the boost, buck and buck-boost modes, the VIN end of the first current mode converter U89 is connected with a 3.3V power supply and is connected with ground via the first power supply filter capacitor C302, the capacitor absorbs a large current at the moment of power-up to protect the safety of the chip, the 1 end of the first photo coupler U90 is connected with a 3.3V power supply through the first current limiting resistor R366, the 3 end of the first photo coupler U90 is connected with the ground, the 4 end of the first photo coupler U90 is connected with the 3.3V power supply through the first pull-up resistor R365, the PWM end of the first current mode converter U89 is connected with the 4 end of the first photo coupler U90, the 2 end of the first photo coupler U90 is connected with the PWM1 end in the master control circuit and is used for receiving dimming information sent by the master control, the 15V power supply is connected with the ISN end of the first current mode converter U89 through C300 and R361 in the first RC filter circuit, the grid electrode of the first MOS transistor Q5 is connected with the TG end of the first current mode converter U89, the source electrode of the first MOS transistor Q5 is connected with the ISN end of the first current mode converter U89, the drain electrode Q5 is connected with the first MOS transistor Q16, the SW end of the first current mode converter U89 is connected to the base of the first triode Q6 through L17 and R363 in the first filter circuit, the emitter of the first triode Q6 is connected to the drain of the first MOS transistor Q5 through R362 in the first filter circuit, the SW end of the first current mode converter U89 is connected to one end of the C301 in the first filter circuit through the anode of the first diode D29, the other end of the C301 in the first filter circuit is connected to the J18 and J21 in the first laser emission circuit, the VC and SS ends of the first current mode converter U89 are connected to ground through the C304 and C303 in the first filter circuit, and the RT end of the first current mode converter U89 is connected to ground through the first pull-down resistor R367.
In one embodiment of the present invention, the interactive sensing circuit 12 includes an infrared sensing circuit 121, an image capturing circuit 122, and an electromagnetic sensing circuit 123, where an output end of the infrared sensing circuit 121 is connected to an input end of the main control circuit 4, a data end of the image capturing circuit 122 is connected to an input end of the main control circuit 4, and a voltage end of the electromagnetic sensing circuit 123 is connected to an input end of the main control circuit 4.
As shown in fig. 3, the infrared sensing circuit includes a second current limiting resistor, a first voltage dividing circuit, a first infrared sensing chip, a second pull-down resistor, a second voltage dividing circuit, a first photoresistor, a first resistor, a first pyroelectric infrared sensing module, and a second filter circuit. The first infrared induction chip IC1 adopts a BISS0001 which has a high-performance sensing signal processing integrated circuit, can be matched with a pyroelectric infrared sensor and a small amount of external components to form a passive pyroelectric infrared switch, the Vo end of the first infrared induction chip IC1 is connected with the VOT end in the main control circuit through the second current limiting resistor R18, the alternating current clutter in the filtering circuit ensures that the signal is pure and the input current is regulated through the resistor, the RR1 end of the first infrared induction chip IC1 is connected with the ground through RP1, R23 and C49 in the second voltage dividing circuit, the magnitude of the voltage division can be regulated by a sliding rheostat to regulate the proper output delay time, The RR2 end of the first infrared induction chip IC1 is connected with the ground through the second pull-down resistors R22 and C50, the level is pulled down through the resistors and the front and rear end signals are isolated through the capacitor, a 3.3V power supply is connected with the VC end of the first infrared induction chip IC1 through the R25 in the second voltage dividing circuit, the VC end of the first infrared induction chip IC1 is connected with the first photosensitive resistor J1 through the RP2 in the second voltage dividing circuit, the photosensitive resistors participate in the voltage dividing circuit, different voltages are obtained according to the illumination intensity, so that the day and night modes are switched, the IB end of the first infrared induction chip IC1 is connected with the ground through the first resistor R21, The bias current setting circuit is used for setting the bias current of an operational amplifier, the 2OUT end of the first infrared sensing chip IC1 is connected with the 2 IN-end of the first infrared sensing chip IC1 through C37 and R19 IN the second filter circuit, the 1OUT end of the first infrared sensing chip IC1 is connected with the 1 IN-end of the first infrared sensing chip IC1 through C30 and R16 IN the second filter circuit, the 1OUT end of the first infrared sensing chip IC1 is connected with the 2 IN-end of the first infrared sensing chip IC1 through E1 and R17 IN the second filter circuit, the 1 IN-end of the first infrared sensing chip IC1 is connected with the 2 IN-end of the first infrared sensing chip IC1 through C38 IN the second filter circuit, R24, R27 and E2 are connected with the 1IN+ end of the first infrared induction chip IC1, the 1 pin of the first pyroelectric infrared induction module PIR1 is grounded, the 3 pin of the first pyroelectric infrared induction module PIR1 is connected with a 3.3V power supply, and the 1IN+ end of the first infrared induction chip IC1 is connected with the 2 pin of the first pyroelectric infrared induction module; As shown in fig. 4, the image acquisition circuit comprises a first image sensor, a first power supply filter circuit, a third pull-down resistor, a second RC filter circuit, and a first reset circuit, wherein the first image sensor U47 is an OV9712, a low-voltage, high-performance quarter-inch megapixel image sensor, which provides the full functionality of an om-using single-chip camera, and provides full-frame, sub-sampled, windowed 8/10-bit images in raw RGB format through a digital video port, the avdd_1 end of the first image sensor U47 is connected via C31, C32 and ground in the first power supply filter circuit, The VREFH end of the first image sensor U47 is connected with the ground through C33 and C34 in the first power supply filter circuit, the VREFN end of the first image sensor U47 is connected with the ground through C35 and C36 in the first power supply filter circuit, the AVDD_2 end of the first image sensor U47 is connected with the ground through C43 and C44 in the first power supply filter circuit, the DOVDD end of the first image sensor U47 is connected with the ground through C45 and C46 in the first power supply filter circuit, the DVDD end of the first image sensor U47 is connected with the ground through C47 in the second RC filter circuit, the C48, R28 is connected with PWBN end of the first image sensor U47, TM end of the first image sensor U47 is connected with ground through the third pull-down resistor R26, RSTB end of the first image sensor U47 is connected with ground through C53 in the first reset circuit, 3.3V power supply is connected with RSTB end of the first image sensor U47 through R29 in the first reset circuit, at the moment of power-on, the capacitor is in a short circuit state, the ground of the RSTB end is in a low level, the capacitor is in a short circuit state after full, at the moment, the RSTB end is in a high level, the power-on reset operation is automatically completed, The output end of the image acquisition circuit is connected with the input end of the main control circuit, the action and the expression of the person in front of the equipment are sent, and the main control circuit performs corresponding light and voice interaction through the network database through the received action and micro expression of the person.
In one embodiment of the present invention, the electromagnetic induction circuit 123 includes a first inductor, a third filter circuit, a first operational amplifier, a first feedback resistor, a third RC filter circuit, a fifth pull-down resistor, a second operational amplifier, a second feedback resistor, a third voltage dividing circuit, a second triode, a fourth current limiting resistor, and a first light emitting diode, where the first inductor is connected to the inverting input terminal of the first operational amplifier through the third filter circuit, the inverting input terminal of the first operational amplifier is connected to the output terminal of the first feedback resistor, a 5V power supply is connected to the non-inverting input terminal of the first operational amplifier through the third RC filter circuit, the output terminal of the first operational amplifier is connected to the inverting input terminal of the second operational amplifier through the fifth pull-down resistor, the inverting input terminal of the second operational amplifier is connected to the output terminal of the first operational amplifier through the second feedback resistor, the output terminal of the second operational amplifier is connected to the inverting input terminal of the second operational amplifier through the third triode, and the output terminal of the second operational amplifier is connected to the third triode through the third triode, and the drain of the third triode is connected to the drain.
As shown in fig. 5, the electromagnetic induction circuit includes a first inductor, a third filter circuit, a first operational amplifier, a first feedback resistor, a third RC filter circuit, a fourth pull-down resistor, a third current limiting resistor, a fifth pull-down resistor, a second operational amplifier, a second feedback resistor, a third voltage dividing circuit, a second triode, a fourth current limiting resistor, and a first light emitting diode, one end of the first inductor L3 is connected to ground, the other end is connected to ground through C61 and R43 in the third filter circuit, the other end of R43 in the third filter circuit is connected to an inverting input terminal of the first operational amplifier U50C, an output terminal of the first operational amplifier U50C is connected to an inverting input terminal of the first operational amplifier U50C through the first feedback resistor R47, a 5V power supply is connected to an non-inverting input terminal of the first operational amplifier U50C through R31 and C60 in the third RC filter circuit, the non-inverting input end of the first operational amplifier U50C is connected with the ground through the fourth pull-down resistor R34, when no signal is ensured, the port is in a low level state, misjudgment is avoided, the output end of the first operational amplifier U50C is connected with the inverting input end of the second operational amplifier U50A through the third current limiting resistor R41, the non-inverting input end of the second operational amplifier U50A is connected with the ground through the fifth pull-down resistor R37 through a resistor limiting input current protection chip, the inverting input end of the second operational amplifier U50A is connected with the output end of the second operational amplifier U50A through the second feedback resistor R45, the output end of the second operational amplifier U50A is connected with the base electrode of the second triode Q1 through the third voltage dividing circuits R35 and R39, the 5V power supply is connected with the anode of the first light emitting diode LED1 through the fourth current limiting resistor R32, the brightness of the light emitting diode is controlled through the resistor adjustment current, the cathode of the first light emitting diode LED1 is connected with the collector of the second triode Q1, and the emitter of the second triode Q1 is grounded.
In one embodiment of the present invention, the audio circuit 2 includes an audio acquisition circuit 21 and an audio amplification circuit 22, wherein an output end of the audio acquisition circuit 21 is connected to an input end of the master control circuit 4, and an input end of the audio amplification circuit 22 is connected to an output end of the master control circuit 4.
It should be noted that, as shown in fig. 6, the audio acquisition circuit includes a fourth filter circuit, a third operational amplifier, a fifth current limiting resistor, a first microphone, a second microphone, a fourth RC filter circuit, a fifth RC filter circuit, a first isolation capacitor, a fourth voltage dividing circuit, a fourth operational amplifier, a sixth pull-down resistor, a first feedback circuit, and a third microphone, the first microphone J13 is connected to the non-inverting input terminal of the third operational amplifier U11A through the fourth filter circuits C285 and R344, the second microphone J14 is connected to the inverting input terminal of the third operational amplifier U11A through the R345 in the fifth current limiting resistor, the 5V power supply is connected to the positive electrode of the power supply terminal of the third operational amplifier U11A through the R342, C283, and C284 in the fourth RC filter circuit, the non-inverting input terminal of the third operational amplifier U11A is connected to ground through the R343, the 5V power supply is connected with the negative electrode of the power supply end of the third operational amplifier U11A through R354, C291 and C292 in the fifth RC filter circuit, the output end of the third operational amplifier U11A is connected with one end of C287 in the fourth voltage division circuit through the first isolation capacitor C286, the other end of C287 in the fourth voltage division circuit is connected with the ground through R350, C295 and R358, one end of C287 in the fourth voltage division circuit is respectively connected with one end of R346 and R347, the other end of R346 in the fourth voltage division circuit is respectively connected with the ground through R351 and R359, one end of C289 and C296 in the fourth voltage division circuit is connected with two sides of R351, the other end of C289 and the sliding end of R351 in the fourth voltage division circuit are connected with the ground through R355 and C299, the other end of R347 in the fourth voltage division circuit is respectively connected with the ground through C290, C293, R352, R360 and C298, the other end of the C298 in the fourth voltage dividing circuit is connected with the non-inverting input end of the fourth operational amplifier U11B, the non-inverting input end of the fourth operational amplifier U11B is connected with the ground through the sixth pull-down resistor R348, the inverting input end of the fourth operational amplifier U11B is respectively connected with the output end of the fourth operational amplifier U11B through the C294 and the R357 in the first feedback circuit, the output end of the fourth operational amplifier U11B is connected with the third microphone, the audio acquisition circuit is used for acquiring and processing external sound information, filtering low-frequency and high-frequency clutter in the environment, acquiring complete and clear human voice and transmitting data information to the main control circuit.
In one embodiment of the present invention, the audio amplifying circuit 22 includes a fifth filter circuit, a fifth operational amplifier, a second feedback circuit, a sixth operational amplifier, a third feedback circuit, a first sliding resistor, a second sliding resistor, a first isolation circuit, a first audio power amplifying chip, a first gain circuit, a second audio power amplifying chip, a second gain circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a first speaker, and a second speaker, where the fifth filter circuit is connected to the non-inverting input terminals of the fifth operational amplifier and the sixth operational amplifier, the inverting input terminal of the fifth operational amplifier is connected to the output terminal of the sixth operational amplifier through the second feedback circuit, the inverting input terminal of the sixth operational amplifier is connected to the output terminal of the sixth operational amplifier through the third feedback circuit, the output terminals of the fifth operational amplifier and the sixth operational amplifier are connected to the first isolation circuit through the first sliding resistor, the second sliding resistor, the first isolation circuit, the first audio power amplifying chip, the second audio power amplifying chip, and the non-inverting input terminal of the second audio power amplifying chip are connected to the non-inverting input terminal of the audio power amplifying chip, and the audio power amplifying chip are connected to the non-inverting input terminal of the audio chip.
As shown in fig. 7, the audio amplifying circuit includes a fifth filter circuit, a fifth operational amplifier, a second feedback circuit, a sixth filter circuit, a sixth operational amplifier, a third feedback circuit, a first sliding resistor, a second sliding resistor, a first isolation circuit, a first audio power amplifying chip, a first gain circuit, a second audio power amplifying chip, a second gain circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a first speaker, and a second speaker, wherein the non-inverting input end of the fifth operational amplifier U86A is connected with ground through C253, C260, R320 in the fifth filter circuit, and the non-inverting input end of the fifth operational amplifier U86A is connected with ground through C253, C253 in the fifth filter circuit, C260, R320 and ground, the non-inverting input terminal of the sixth operational amplifier U86B is connected through C273, C268, R331 and ground in the fifth filter circuit, the inverting input terminal of the fifth operational amplifier U86A is connected through C261, R324 and ground in the second feedback circuit, the inverting input terminal of the sixth operational amplifier U86B is connected through C269, R329 and ground in the third feedback circuit, the inverting input terminal of the fifth operational amplifier U86A is connected through R326 and the output terminal of the fifth operational amplifier U86A in the second feedback circuit, The inverting input end of the sixth operational amplifier U86B is connected with the output end of the sixth operational amplifier U86B through R328 in the third feedback circuit, the output end of the fifth operational amplifier U86A is connected with one end of the first sliding rheostat RR1A, the output end of the sixth operational amplifier U86B is connected with one end of the second sliding rheostat RR1B, the other end of the first sliding rheostat RR1A is connected with the other end of the second sliding rheostat RR1B, and the sliding ends of the first sliding rheostat RR1A and the second sliding rheostat RR1B are respectively connected with the other end of the second sliding rheostat RR1B through C259 in the first isolation circuit, R325, C270, C330 and ground are connected, the other end of C259 in the first isolation circuit is connected with the non-inverting input end of the first audio power amplifier chip U85, the inverting input end of the first audio power amplifier chip U85 is connected with the ground through R323 and C267 in the first gain circuit, the inverting input end of the first audio power amplifier chip U85 is connected with the output end through R327 in the first gain circuit, the other end of C270 in the second isolation circuit is connected with the non-inverting input end of the second audio power amplifier chip U88, the inverting input end of the second audio power amplifier chip U88 is connected with the non-inverting input end of the second audio power amplifier chip U88 through R334 in the second gain circuit, c279 is connected with the ground, the reverse phase input end of the second audio power amplification chip U88 is connected with the output end through R337 in the second gain circuit, the output end of the first audio power amplification chip U85 is connected with the positive electrode of the first loudspeaker LS1, the output end of the second audio power amplification chip U88 is connected with the positive electrode of the second loudspeaker LS2, the output end of the first audio power amplification chip U85 is connected with +12V power supply through the anode of D25 in the first voltage stabilizing circuit, the output end of the first audio power amplification chip U85 is connected with-12V power supply through the cathode of D26 in the first voltage stabilizing circuit, the output end of the second audio power amplification chip U88 is connected with +12V power supply through the anode of D27 in the second voltage stabilizing circuit, The output end of the second audio power amplifier chip U88 is connected with a-12V power supply through the cathode of the D28 in the second voltage stabilizing circuit, and the cathodes of the first loudspeaker and the second loudspeaker are respectively connected with the ground.
In one embodiment of the present invention, the input end of the LED display screen unit board circuit 3 is connected with the output end of the main control circuit 4, and the LED display screen unit board circuits 3 have multiple groups, so that display screens with different sizes and specifications can be formed.
As shown in fig. 8, the LED display unit board circuit includes a first CMOS device, a second CMOS device, a first fet, a second fet, a third fet, a fourth fet, a fifth fet, a sixth fet, a seventh fet, and an eighth fet, the ends A0, A1, A2, OE1, and OE2 of the first CMOS device U12 are respectively connected to the ends A0, A1, A2, OE1, and OE2 of the second CMOS device U23, the ends VDD of the first CMOS device U12 and the second CMOS device U23 are connected to the power VCC, the end Y0 of the first CMOS device U12 is connected to the end G1 of the first fet U1, the end Y1 of the first CMOS device U12 is connected to the end G2 of the first fet U1, the end Y2 of the first CMOS device U12 is connected to the end G2 of the second fet U10, the end Y2 of the first CMOS device U12 is connected to the end G2 of the first fet U10, the Y4 end of the first CMOS device U12 is connected with the G1 end of the third field effect tube U11, the Y5 end of the first CMOS device U12 is connected with the G2 end of the third field effect tube U11, the Y6 end of the first CMOS device U12 is connected with the G1 end of the fourth field effect tube U13, the Y7 end of the first CMOS device U12 is connected with the S2 end of the fourth field effect tube U13, the Y0 end of the second CMOS device U23 is connected with the G1 end of the fifth field effect tube U22, the Y1 end of the second CMOS device U23 is connected with the G2 end of the fifth field effect tube U22, the Y2 end of the second CMOS device U23 is connected with the G1 end of the sixth field effect tube U24, the Y3 end of the second CMOS device U23 is connected with the G2 end of the sixth field effect tube U24, the Y4 end of the second CMOS device U23 is connected with the G1 end of the seventh field effect tube U33, the Y5 end of the second CMOS device U23 is connected to the G2 end of the seventh field effect transistor U33, the Y6 end of the second CMOS device U23 is connected to the G1 end of the eighth field effect transistor U36, and the Y7 end of the second CMOS device U23 is connected to the S2 end of the eighth field effect transistor U36.
In one embodiment of the present invention, the input end of the main control circuit 4 is connected to the output end of the electromagnetic induction circuit 123 to obtain electromagnetic induction data of each position, and the output end of the main control circuit 4 is connected to the input end of the audio amplifying circuit 22 to play corresponding music and voice according to the user status to improve interactive pleasure.
It should be noted that, as shown in fig. 9, the main control circuit includes a first main control chip, a first passive crystal oscillator, a first adapting circuit, a second reset circuit, and a first key, where the first main control chip U84 adopts TMS320F2812, which is a 32-bit fixed point micro control unit, and the main frequency is up to 150MHz; the intelligent power supply system is suitable for various control industrial equipment, is small in size, high in performance and high in portability, is simultaneously suitable for various handheld equipment, accords with high-low temperature and vibration tests, meets industrial environment application, the X1 end of the first main control chip U84 is connected with the X2 end of the first main control chip U84 through the first passive crystal oscillator, the first passive crystal oscillator is respectively connected with the C250 and the C251 in the first adaptive circuit through the C250 and the C251 in the first adaptive circuit, the vibration frequency of the crystal oscillator is regulated through a capacitor, the vibration frequency is guaranteed to reach a set value, the XRS end of the first main control chip U84 is connected with the C252 in the second reset circuit through the C252 and the ground, the XRS end of the first main control chip U84 is connected through the R317 in the second reset circuit, the instant capacitor is in a charging state when power-on, the instant capacitor is in a low level, the capacitor is fully charged after a period of time, the capacitor is in a high level, the two ends of the C252 in the second reset circuit are connected with the first key and the S1 ends of the second reset circuit can be reset manually, and a user can reset by triggering the reset circuit.
In one embodiment of the present invention, the data end of the communication circuit 5 is connected to the signal end of the master control circuit 4, the master control circuit 4 realizes remote upgrade and content change through the communication circuit 5, and the communication circuit 5 is connected to a server to realize AI intelligent interaction.
It should be noted that, as shown in fig. 10, the communication circuit includes a first communication chip, a seventh filter circuit, a second passive crystal oscillator, a second adapting circuit, a second power filter circuit, a first LC filter circuit, a first radio frequency chip, a second LC filter circuit, a third LC filter circuit, a second isolation capacitor, and a first antenna, the first communication chip U62 is a low intermediate frequency transceiver for half duplex transmission, the received radio frequency signal is first inputted into a single-ended form through a low noise amplifier, the signal is then converted into a differential signal to improve the second harmonic, and then is converted into an intermediate frequency to output an in-phase quadrature signal, and then is subjected to data conversion by an ADC, all subsequent signal processing demodulation are performed in the digital domain, and the digital state machine further controls automatic frequency correction, received signal strength indication, and automatic gain control, VR_ANA and VR_DIG of the first communication chip U62 are respectively connected with ground through C149 and C148 in the seventh filter circuit, VR_PA ends of the first communication chip U62 are respectively connected with ground through C160 and C162 in the seventh filter circuit, XTA and XTB of the first communication chip U62 are respectively connected with two ends of the second passive crystal oscillator Y2, two ends of the second passive crystal oscillator Y2 are respectively connected with ground through C144 and C150 in the second adapting circuit, 3.3V power supply is respectively connected with VBAT_ANA and VBAT_DIG ends of the first communication chip U62 through C143 and C164 in the second power filter circuit, RFI_LF ends of the first communication chip U62 are respectively connected with RF1 ends of the first radio frequency chip U60 through L14, C151 and C152 in the first LC filter circuit, and RF_LF ends of the first communication chip U62 are respectively connected with ground through C144 and C150 in the second filter circuit, and VBAT_DIG ends of the first communication chip U62 are respectively connected with ground through VBAT_PA ends in the second LC 15 filter circuit, L16, C154, C157 are connected with the RF2 end of the first radio frequency chip U60, TE and RE ends of the main control circuit are respectively connected with Vctr2 and Vctr1 ends of the first radio frequency chip U60 through R161, C147, R165 and C159 in the third LC filter circuit, and COM ends of the first radio frequency chip U60 are connected with the first antenna AT1 through the second isolation capacitor C153.
In one embodiment of the invention, a power supply circuit 6 is also included.
As shown in fig. 11, the power supply circuit includes a first power supply chip, a third power supply filter circuit, a third isolation capacitor, a first pull-up circuit, a fifth voltage division circuit, a sixth voltage division circuit, a seventh pull-down resistor, a fourth LC filter circuit, a fifth LC filter circuit, a sixth LC filter circuit, a second power supply filter capacitor, and a second pull-up resistor, where the first power supply chip U54 employs TPS65023RSBR, a VCC terminal of the first power supply chip U54 is connected to ground through C97, C98, C99, C100, C101 in the third power supply filter circuit, a TRESPWRON terminal of the first power supply chip U54 is connected to ground through the third isolation capacitor C114, and a 5V power supply is connected to dc1, dcdc2 EN, dcdc3 terminal of the first power supply chip U54 through R87, R89, R91, R92 in the first pull-up circuit and dcen_en, dc1_en, the DEFDCDC end of the first power chip U54 is connected with the middle ends of R100 and R103 in the fifth voltage dividing circuit, the DEFDCDC end of the first power chip U54 is connected with the middle ends of R101 and R104 in the sixth voltage dividing circuit, the DEFDCDC end of the first power chip U54 is connected with the ground through the seventh pull-down resistor R97 respectively, the VDCDC1 and L1 ends of the first power chip U54 are connected with the L8, C111 and 3.3V power supply in the fourth LC filter circuit respectively, the VDCDC2 and L2 ends of the first power chip U54 are connected with the L9, C112 and 1.5V power supply in the fifth LC filter circuit respectively, the VDCDC3 and L3 ends of the first power chip U54 are connected with the ground through the L10, C116 and 1.8V power supply in the sixth LC filter circuit respectively, the VLDO2 ends of the first power chip U54 are connected with the ground through the second power filter capacitor C117 respectively, and the high current is absorbed instantly, the RESPWRON end of the first power chip U54 is connected to the 5V power supply through the second pull-up resistor R88.
Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (7)
1. The utility model provides an interactive wisdom LED display screen, its characterized in that includes laser projection interactive circuit (1), audio circuit (2), LED display screen unit board circuit (3), master control circuit (4), communication circuit (5), the information end of laser projection interactive circuit (1) with the data end of master control circuit (4) is connected, sends user interaction information and makes corresponding feedback through master control circuit (4), the output of audio circuit (2) with the input of master control circuit (4) is connected, receives user's voice command, the input of LED display screen unit board circuit (3) with the display output of master control circuit (4) is connected, shows the data information that master control circuit (4) sent, the signal end of master control circuit (4) with the data end of communication circuit (5) is connected, the user passes through communication circuit (5) control master control circuit (4) realizes long-range upgrading optimization;
The laser projection interaction circuit (1) comprises a laser driving circuit (11) and an interaction induction circuit (12), wherein the input end of the laser driving circuit (11) is connected with the control end of the main control circuit (4) to control the intensity and shape of laser, and the output end of the interaction induction circuit (12) is connected with the input end of the main control circuit (4) to receive limb information of a user;
The laser driving circuit (11) comprises a first current mode converter U89, a first power supply filter capacitor C302, a first current limiting resistor R366, a first pull-up resistor R365, a first photoelectric coupler U90, a first RC filter circuit, a first MOS transistor Q5, a first filter circuit, a first triode Q6, a first diode D29, a first pull-down resistor R367 and a first laser emission circuit, wherein the first current mode converter U89 adopts LT3518EFE, the VIN end of the first current mode converter U89 is connected with a 3.3V power supply and is connected with the ground through the first power supply filter capacitor C302, the capacitor absorbs the safety of a large current protection chip at the moment of power up, the 1 end of the first photoelectric coupler U90 is connected with a 3.3V power supply through the first current limiting resistor R366, the 3 end of the first photoelectric coupler U90 is connected with the ground, the 4 end of the first photoelectric coupler U90 is connected with the 3.365 through the first pull-up resistor R3V power supply, the PWM end of the first current mode converter U89 is connected with the 4 end of the first photoelectric coupler U90, the 2 end of the first photoelectric coupler U90 is connected with the PWM1 end in the main control circuit for receiving the light modulation information sent by the main control, the 15V power supply is connected with the ISN end of the first current mode converter U89 through C300 and R361 in the first RC filter circuit, the grid electrode of the first MOS transistor Q5 is connected with the TG end of the first current mode converter U89, the source electrode of the first MOS transistor Q5 is connected with the ISN end of the first current mode converter U89, the drain electrode of the first MOS transistor Q5 is connected with J16 in the first laser emission circuit, the SW end of the first current mode converter U89 is connected with the base electrode of the first triode Q6 through L17 and R363 in the first RC filter circuit, an emitter of the first triode Q6 is connected with a drain electrode of the first MOS tube Q5 through an R362 in the first filter circuit, a SW end of the first current mode converter U89 is respectively connected with one end of a C301 in the first filter circuit through an anode of the first diode D29, the other end of the C301 in the first filter circuit is respectively connected with J18 and J21 in the first laser emission circuit, VC and SS ends of the first current mode converter U89 are respectively connected with ground through C304 and C303 in the first filter circuit, and an RT end of the first current mode converter U89 is connected with ground through a first pull-down resistor R367;
the interactive induction circuit (12) comprises an infrared induction circuit (121), an image acquisition circuit (122) and an electromagnetic induction circuit (123), wherein the output end of the infrared induction circuit (121) is connected with the input end of the main control circuit (4), the data end of the image acquisition circuit (122) is connected with the input end of the main control circuit (4), and the voltage end of the electromagnetic induction circuit (123) is connected with the input end of the main control circuit (4);
The electromagnetic induction circuit (123) comprises a first inductor, a third filter circuit, a first operational amplifier, a first feedback resistor, a third RC filter circuit, a fifth pull-down resistor, a second operational amplifier, a second feedback resistor, a third voltage dividing circuit, a second triode, a fourth current limiting resistor and a first light emitting diode, wherein the first inductor is connected with the inverting input end of the first operational amplifier through the third filter circuit, the inverting input end of the first operational amplifier is connected with the output end of the first feedback resistor, a 5V power supply is connected with the non-inverting input end of the first operational amplifier through the third RC filter circuit, the output end of the first operational amplifier is connected with the inverting input end of the second operational amplifier through the fifth pull-down resistor and the ground, the inverting input end of the second operational amplifier is connected with the output end of the first operational amplifier through the second feedback resistor, the output end of the second operational amplifier is connected with the third triode and the third triode, and the non-inverting input end of the second operational amplifier is connected with the fourth triode through the third triode and the third triode.
2. The interactive intelligent LED display screen according to claim 1, characterized in that the audio circuit (2) comprises an audio acquisition circuit (21) and an audio amplification circuit (22), the output of the audio acquisition circuit (21) is connected with the input of the main control circuit (4), and the input of the audio amplification circuit (22) is connected with the output of the main control circuit (4).
3. The interactive intelligent LED display screen according to claim 2, wherein the audio amplifying circuit (22) comprises a fifth filter circuit, a fifth operational amplifier, a second feedback circuit, a sixth operational amplifier, a third feedback circuit, a first sliding resistor, a second sliding resistor, a first isolation circuit, a first audio power amplifier chip, a first gain circuit, a second audio power amplifier chip, a second gain circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a first speaker and a second speaker, the fifth filter circuit is respectively connected with the non-inverting input ends of the fifth operational amplifier and the sixth operational amplifier, the inverting input ends of the fifth operational amplifier are connected with the inverting input ends of the fifth operational amplifier through the second feedback circuit and the output ends of the fifth operational amplifier, the inverting input ends of the sixth operational amplifier are respectively connected with the third feedback circuit and the output ends of the sixth operational amplifier, the output ends of the fifth operational amplifier and the sixth operational amplifier are respectively connected with the first sliding resistor and the first isolation circuit, the first audio power amplifier chip and the second audio power amplifier chip are respectively connected with the inverting input ends of the second audio amplifier chip, the inverting input ends of the second operational amplifier chip are respectively connected with the inverting input ends of the first amplifier chip and the second amplifier chip.
4. The interactive intelligent LED display screen according to claim 1, wherein the input end of the LED display screen unit board circuit (3) is connected with the output end of the main control circuit (4), and the LED display screen unit board circuits (3) are provided with a plurality of groups, so that display screens with different sizes and specifications can be formed.
5. The interactive intelligent LED display screen according to claim 2, wherein the input end of the main control circuit (4) is connected with the output end of the electromagnetic induction circuit (123) to obtain electromagnetic induction data of each position, and the output end of the main control circuit (4) is connected with the input end of the audio amplifying circuit (22) to play corresponding music and voice according to the user state to improve interactive fun.
6. The interactive intelligent LED display screen according to claim 1, wherein the data end of the communication circuit (5) is connected with the signal end of the main control circuit (4), the main control circuit (4) realizes remote upgrade and content change through the communication circuit (5), and the communication circuit (5) is connected with a server to realize AI intelligent interaction.
7. The interactive smart LED display screen of claim 1, further comprising a power circuit (6).
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| CN111290585A (en) * | 2020-03-31 | 2020-06-16 | 哈尔滨拓博科技有限公司 | Intelligent space gesture control system based on display equipment |
| CN112151012A (en) * | 2020-09-21 | 2020-12-29 | 深圳Tcl新技术有限公司 | Laser induction interaction controller, method and system |
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