CN209708605U - A kind of intelligent display screen - Google Patents
A kind of intelligent display screen Download PDFInfo
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- CN209708605U CN209708605U CN201920773420.1U CN201920773420U CN209708605U CN 209708605 U CN209708605 U CN 209708605U CN 201920773420 U CN201920773420 U CN 201920773420U CN 209708605 U CN209708605 U CN 209708605U
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- 238000001514 detection method Methods 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 230000005616 pyroelectricity Effects 0.000 claims abstract description 20
- 230000005611 electricity Effects 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 10
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 238000009738 saturating Methods 0.000 claims 1
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
A kind of intelligent display screen, including LED display ontology, DC-DC power supply module, conversion electric power switch, also there is infrared detection circuit, light-operated circuit, infrared detection circuit, light-operated circuit, DC-DC power supply module, conversion electric power switch are mounted on the circuit board of LED display body interior and connect through conducting wire, infrared detection circuit includes pyroelectricity detecting module and control sub-circuit, there is opening at the front lower middle part of the shell of display screen ontology, pyroelectricity detecting module is mounted in opening, and Fresnel lens are mounted on open front.The utility model is when someone is in a meeting or in office, the backlight luminous board of Grand LED Screen is normally in work once electrified state, backlight luminous board power supply can be automatically closed as nobody, and there is light-operated circuit, backlight luminous board light emission luminance during the day as well as at night can be set, daylight luminous brightness is higher, glowing at night brightness is lower, thus reaches automatic control, energy conservation, and improve product competitiveness in the market.
Description
Technical field
The utility model relates to display device field, especially a kind of intelligent display screen.
Background technique
Grand LED Screen etc. is widely used in meeting, does since display effect is good, energy saving, light-weight, small in size
Public or public domain publicity (such as government affair centre) etc. place uses.When existing Grand LED Screen works, to it
The adjusting of switch and brightness when middle work etc. is carried out by manual operation panel button or wireless remote control plate.
In practical situations, for example, meeting, office midway, personnel participating in the meeting or staff it is away from keyboard scene a period of time
Afterwards, also need to return to live (such as adjourning or temporarily cease office) due to subsequent, people will not generally show LED
The power supply of display screen is closed, in this way, people, which leave not use, will cause waste of energy during Grand LED Screen；There are also one
Kind situation is exactly, even if people need the long period to leave scene, but before leaving, due to forgetting that closing big screen LED shows
The power supply of screen will also result in power supply waste.Based on above-mentioned, provide it is a kind of whether can have personnel's use according to ambient enviroment, automatically
Carry out Energy Saving Control and can increase product competitiveness in the market display screen seem it is necessary to.
Utility model content
In order to overcome existing Grand LED Screen because structure is limited, does not use temporarily in people or do not use for a long time
When, the drawbacks of can not accomplishing auto-controlled energy-saving, the utility model provide it is a kind of used for meeting, office etc., with red
Outer detection circuit, when someone is in a meeting or in office, the backlight luminous board of Grand LED Screen is normally in work once electrified shape
Backlight luminous board power supply can be automatically closed as nobody, and have light-operated circuit for state, and backlight luminous board during the day as well as at night can be arranged
Light emission luminance, daylight luminous brightness is higher, glowing at night brightness is lower, thus reaches automatic control, energy conservation, and improve product
A kind of intelligent display screen of the market competitiveness.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of intelligent display screen, including LED display ontology, DC-DC power supply module, conversion electric power switch,
Be characterized in that also have infrared detection circuit, light-operated circuit, infrared detection circuit, light-operated circuit, DC-DC power supply module,
Conversion electric power switch is mounted on the circuit board of LED display body interior, the Switching Power Supply output of LED display body interior
End is connected through conducting wire respectively with the power input both ends of first set DC-DC power supply module, first set DC-DC power supply
The power supply output both ends of module are connected with the power input both ends of infrared detection circuit through conducting wire respectively, and infrared detection circuit is just
The positive and negative polarities power supply of pole power output end, the Switching Power Supply cathode output end of LED display body interior and light-operated circuit is defeated
Enter end to connect through conducting wire respectively, the backlight luminous board power supply line of main control board and conversion electric power switch in LED display ontology
Two power inputs are connected through conducting wire respectively, the first via power output end and second set of DC to DC of conversion electric power switch
The power input both ends of power module are connected through conducting wire respectively, and the second road power output end and LED of conversion electric power switch are shown
Shield intrinsic backlight luminous board power input both ends to connect through conducting wire respectively, second set of DC-DC power supply module first,
Two road power output end anodes are connected with two control power inputs of light-operated circuit through conducting wire respectively, the control of light-operated circuit
Backlight in power output end and the negative power supply output end and LED display ontology of second set of DC-DC power supply module
Two power inputs of lamp plate are connected through conducting wire respectively, and infrared detection circuit includes pyroelectricity detecting module and control son electricity
Road, control sub-circuit is mounted on the circuit board of LED display body interior, at the front lower middle part of the shell of LED display ontology
There is an opening, pyroelectricity detecting module is mounted in opening, and pyroelectricity detecting module is configured with a Fresnel lens, luxuriant and rich with fragrance
Nie Er lens is mounted on open front and is located at the detecting head front end of pyroelectricity detecting module.
There are two power input, two-way power output ends for the conversion electric power switch tool.
The pyroelectricity detecting module of the infrared detection circuit is the thermal release electric infra-red ray detecting module of model HN911L, control
System circuit includes adjustable resistance, diode, electrolytic capacitor, switch integrated circuit, is connected therebetween through circuit board wiring, switch collection
It is TWH8778 at circuit model, 3 foot of cathode power supply input terminal and switch integrated circuit of thermal release electric infra-red ray detecting module are just
The connection of 1 foot of pole power input, 6 foot of negative power supply input terminal of thermal release electric infra-red ray detecting module and bearing for switch integrated circuit
4 foot of pole power input, the connection of electrolytic capacitor cathode, 1 foot of power output end and diode of thermal release electric infra-red ray detecting module
Anode connection, diode cathode are connected with electrolytic capacitor anode, 5 foot of switch integrated circuit control terminal, adjustable resistance both ends and heat
4 and 5 foot of outer connecting resistance both ends for releasing electric infra-red detection module is separately connected.
The light-operated circuit includes photo resistance, resistance, NPN triode and relay, is connected therebetween through circuit board wiring,
Photo resistance one end is connected with relay cathode power supply input terminal, and the photo resistance other end is connected with resistance one end, and resistance is another
End connected with NPN transistor base, NPN triode collector is connected with relay negative power supply input terminal, photo resistance by
Smooth surface is located at aperture outside before the shell of LED display ontology.
The utility model beneficial effect is: remaining use process of the utility model and function and existing Grand LED Screen
It is completely the same.The utility model is in use, either meeting is still handled official business, as long as someone is showing screen front end, that is, red
When in the pyroelectricity detecting module sector investigative range of outer detection circuit, the control sub-circuit of infrared detection circuit will be controlled greatly
The normal work once electrified of backlight of screen LED display body interior, so the display screen of Grand LED Screen ontology into
Row video is shown；When people meeting-place away from keyboard or Administrative Area, as long as no people in display screen front end, infrared detection circuit
Control sub-circuit will control the backlight power loss of Grand LED Screen body interior and no longer work, such big screen LED
The display screen of display screen ontology no longer carries out video and shows, reaches automatic control and energy-efficient purpose.It is acted in light-operated circuit
Under, Grand LED Screen ontology at night when its internal backlight can work under lower voltage, reduced-current, daytime
When its internal backlight can work under high voltage, high current, in this way meet watch video under the premise of, reach from
Dynamic control and energy-efficient purpose, it is therefore prevented that during video is shown, user does not carry out the brightness regulation of display screen actively and causes
Waste of energy, the utility model can also switch setting display screen intensity not by the control of light-operated circuit, operator by conversion electric power
The key or wireless remote control plate of member oneself operation Grand LED Screen ontology carry out the adjusting of brightness, use more flexible side
Just.The utility model has reached automatic control, energy conservation, and improves product competitiveness in the market.Based on above-mentioned, what the utility model had had is answered
Use prospect.
Detailed description of the invention
The utility model is described further below in conjunction with drawings and examples.
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model circuit diagram.
Specific embodiment
Shown in Fig. 1, a kind of intelligent display screen, including Grand LED Screen ontology 1, DC-DC power supply mould
Block 2, conversion electric power switch 3 also have infrared detection circuit 4, light-operated circuit 5, DC-DC power supply module 2, infrared acquisition
Circuit 4, light-operated circuit 5, conversion electric power switch 3 are mounted on the circuit board inside LED display ontology 1, infrared detection circuit 4
Including pyroelectricity detecting module and control sub-circuit, control sub-circuit is mounted on the circuit board of LED display body interior, In
There is a rectangular aperture 11 at the front lower middle part of the shell of Grand LED Screen ontology, and pyroelectricity detecting module is mounted on opening 11
Interior, for the detecting head of pyroelectricity detecting module towards front end, pyroelectricity detecting module is configured with a Fresnel lens 12, Fei Nie
Your lens 12 is mounted on 11 front ends of opening and is located at the detecting head front end of pyroelectricity detecting module.The behaviour of conversion electric power switch 3
Make handle to be located at before the shell of LED display ontology 1 on the outside of the one of aperture of left part, conducive to the operation of user.Light-operated electricity
The light-receiving surface of the photo resistance 51 on road is located at second aperture outside of left part before the shell of LED display ontology 1.
Shown in Fig. 2, first set DC-DC power supply modules A 4 is the DC-DC power supply mould of the positive source electronics of brand
Block finished product, for input voltage under 65V, output voltage is direct current 6V, second set of DC-DC power supply modules A 5 be brand just
The DC-DC power supply module finished product of source electronics, input voltage have two-way power output end 3 and 5 feet, 4 under 65V
And 5 feet (sharing 5 foot of cathode output end), 3 and 5 feet export 24V power supply all the way, and another way 4 and 5 feet export 18V power supply (second
1 foot and 3 feet for covering DC-DC power supply modules A 5 are directly communicated through conducting wire connection), power is 200W.Conversion electric power switch SK
It is common tool there are two power input 1 and 2 feet, two-way power output end 3 and the foot of 4 feet, 5 and 6 stir power switch, power supply
The operation handle of switch SK is located at the one of aperture outside of left part before the shell of LED display ontology, conducive to the behaviour of user
Make.The pyroelectricity detecting module A2 of infrared detection circuit be model HN911L thermal release electric infra-red ray detecting module finished product (T be visit
Head), after mixing Fresnel lens, BURN-THROUGH RANGE can reach that front end is 15 meters or so fan-shaped, and control sub-circuit includes can
Resistance RP, diode VD, electrolytic capacitor C1, switch integrated circuit A3 are adjusted, is connected therebetween through circuit board wiring, switch integrated circuit
A3 model is TWH8778,3 foot of cathode power supply input terminal of thermal release electric infra-red ray detecting module A2 and switch integrated circuit A3's
The connection of 1 foot of cathode power supply input terminal, 6 foot of negative power supply input terminal and switch integrated circuit of thermal release electric infra-red ray detecting module A2
4 foot of negative power supply input terminal of A3, the connection of electrolytic capacitor C1 cathode, the power output end 1 of thermal release electric infra-red ray detecting module A2
Foot is connected with diode VD anode, and diode VD cathode and electrolytic capacitor C1 anode, 5 foot of switch integrated circuit A3 control terminal connect
It connects, 4 and 5 foot of outer connecting resistance both ends of the both ends adjustable resistance RP and thermal release electric infra-red ray detecting module A2 are separately connected.Light-operated electricity
Road includes photo resistance RL1, resistance R1, NPN triode Q1 and relay K1, is connected therebetween through circuit board wiring, photo resistance
The one end RL1 is connected with relay K1 cathode power supply input terminal, and the photo resistance RL1 other end is connected with the one end resistance R1, resistance R1
The other end is connected with NPN triode Q1 base stage, and NPN triode Q1 collector is connected with relay K1 negative power supply input terminal, light
The light-receiving surface of quick resistance RL1 is located at second aperture outside of left part before the shell of LED display screen ontology.
Shown in Fig. 2, the Switching Power Supply A1 output end 3 of LED display body interior and 4 feet and first set DC to DC
The power input both ends 1 of power module A4 and 2 feet are connected through conducting wire respectively, the power supply of first set DC-DC power supply modules A 4
Export both ends 3 and 4 feet 3 and 6 feet with the power input both ends thermal release electric infra-red ray detecting module A2 of infrared detection circuit respectively
It is connected through conducting wire, cathode power supply output end diode VD cathode, the switch of LED display body interior of infrared detection circuit are electric
The positive and negative polarities power input relay K1 cathode power supply input terminal and NPN tri- of 4 foot of source A1 cathode output end and light-operated circuit
Pole pipe Q1 emitter is connected through conducting wire respectively, and main control board A is exported to carrying on the back in LED display ontology in LED display ontology
The two backlight luminous board power supply lines and backlight luminous board H of light lamp plate disconnect, the backlight of main control board A in LED display ontology
Plate power supply line is connected through conducting wire respectively with two power inputs 1 of conversion electric power switch SK and 2 feet, conversion electric power switch SK
First via power output end 3 and 4 feet and second set of DC-DC power supply modules A 5 power input both ends 1 and 2 feet difference
It is connected through conducting wire, the second road power output end 5 of conversion electric power switch SK and 6 feet and the intrinsic backlight luminous board H of LED display
Power input both ends are connected through conducting wire respectively, and the first and second road power output end of second set of DC-DC power supply modules A 5 is just
Pole 3 and 4 feet are respectively with two control power input relay K1 normally opened contact ends of light-operated circuit and normally closed electric shock end through leading
Line connection, the control power output end relay K1 control power input of light-operated circuit and second set of DC-DC power supply
Two power inputs of backlight luminous board H are respectively through conducting wire in 5 foot of negative power supply output end and LED display ontology of modules A 5
Connection.The general several LED lamp bead parallel connections of the intrinsic backlight luminous board H of LED display, then several groups LED lamp bead series connection connect
It connects.
Shown in Fig. 2, remaining use process of the utility model and function and existing Grand LED Screen are completely the same.This
It is novel to use preceding as existing Grand LED Screen, the power switch of opening LED display ontology, LED display ontology
It is at work once electrified video and shows state.After LED display ontology work once electrified, internal switch power supply A1 is exported straight
Galvanic electricity source (general 24V) can enter power input both ends 1 and 2 feet of first set DC-DC power supply modules A 4, then, direct current
DC power modules A 4 is inside it under circuit function, its 3 and 4 foot exports stable 6V DC power supply and enter infrared acquisition electricity
The power input both ends on road, infrared detection circuit are in work once electrified state.After this body running of LED display, internal master control
Circuit board A exports to the two poles of backlight luminous board H in LED display ontology two electricity that can enter conversion electric power switch SK
Source input terminal 1 and 2 feet, if necessary to auto-controlled energy-saving, conversion electric power switch SK is stirred handle to the right in advance by user
It (only needs to operate once, can no longer be operated later) after stirring, the power input 1 of conversion electric power switch SK and 2 foot meetings
It is connected to respectively with power output end 3 and 4 feet, in this way, inside main control board A is exported to backlight luminous board H in LED display ontology
Two poles can enter power input both ends 1 and 2 feet of second set DC-DC power supply modules A 5, second set direct current turn is directly
Galvanic electricity source module A5 is inside it under circuit function, and 3 and 4 feet can export 24V power supply, 18V power supply respectively enters light-operated circuit
The normally opened contact end and normally-closed contact end of relay K1, the negative electricity of second set of its 5 foot of DC-DC power supply modules A 5 output
Source enters the NPN triode Q1 emitter of light-operated circuit.In actual use, either meeting is still handled official business medium, as long as someone
It is fanned before the detecting head of the thermal release electric infra-red ray detecting module A2 of infrared detection circuit in display screen front end, that is, someone
When in shape investigative range, circuit and peripheral cell adjustable resistance RP make thermal release electric infra-red ray detecting module A2 jointly inside it
(for the adjustable resistance RP adjusting knob of thermal release electric infra-red ray detecting module A2 after adjusting resistance value becomes smaller to the left, pyroelectricity is red under
The detecting head detection range of outside line detecting module A2 becomes larger, and adjustable resistance RP adjusting knob is after adjusting resistance value becomes larger to the right, heat
The detecting head detection range for releasing electric infra-red detection modules A 2 becomes smaller), 1 foot of output end can export high level, and high level is through two
5 foot of control terminal (electrolytic capacitor C1 plays filter action) of pole pipe VD one-way conduction access switch integrated circuit A3, then, switch
For integrated circuit A3 inside it under circuit function, output end 2 and 3 feet export the cathode power supply that high level enters light-operated circuit
Input terminal, light-operated circuit work once electrified are that the backlight luminous board H of subsequent control Grand LED Screen ontology shines, large screen
LED display ontology, which is normally carried out video and shows, to be ready；In use, either meeting still handle official business it is medium, when people are temporary
When leave meeting-place or Administrative Area, as long as no people in display screen front end, that is, nobody is in the heat of infrared detection circuit
When releasing in the detecting head investigative range of electric infra-red detection modules A 2, its 1 foot meeting of output end of thermal release electric infra-red ray detecting module A2
Stop output high level, then, no high level enters back into 5 foot of control terminal of switch integrated circuit A3, in turn, switchs integrated electricity
Its output end 2 of road A3 and 3 feet no longer export the cathode power supply input terminal that high level enters light-operated circuit, and light-operated circuit power loss is no longer
Work, the display screen of Grand LED Screen ontology subsequent so no longer carry out video and show, reach energy saving purpose；When having
When people is again introduced into meeting-place and Administrative Area, 1 foot of thermal release electric infra-red ray detecting module A2 can export high level again, into
And light-operated circuit work once electrified again, it is that the backlight luminous board H of subsequent control Grand LED Screen ontology shines, large screen
LED display ontology, which is normally carried out video and shows, to be ready, and automatic control and energy-efficient purpose are reached.In light-operated circuit: when
When daytime, ambient enviroment light was strong, the light-receiving surface of photo resistance VL1 is illuminated by the light that intensity is high, its resistance value is extremely low in 100K or so,
In this way, switch integrated circuit A3 output end 2 and 3 feet output high level enter light when someone is before Grand LED Screen ontology
The cathode power supply input terminal of circuit is controlled, high level is after photo resistance RL1, resistance R1 enter the base stage of NPN triode Q1, power supply
Voltage is higher than the base stage 0.7V starting voltage of NPN triode Q1, and NPN triode Q1 conducting collector output low level enters relay
Device K1 negative power supply input terminal, then, relay K1 obtains electric actuation, and it controls power input and normally opened contact end closure, by
In, relay K1 control 5 foot of negative power supply output end of power input and second set DC-DC power supply modules A 5 with
Two power inputs of backlight luminous board H are separately connected in LED display ontology, and relay K1 normally opened contact end and second set are straight
3 feet of circulation DC power supplier A5 communicate, so this moment, 24V DC power supply can enter backlight luminous board in LED display ontology
The power input both ends of H, then, backlight luminous board H work under the full operating voltage of 24V, electric current, and display screen light emission luminance reaches
The maximum brightness that user is arranged through remote control panel or operation panel meets the brightness need that user on daytime watches display screen video
It wants；When ambient enviroment light is weak on that night, the light-receiving surface of photo resistance VL1 be illuminated by the light intensity is low, its resistance value it is very high 10M a left side
The right side, in this way, when someone is before Grand LED Screen ontology, switch integrated circuit A3 output end 2 and 3 feet export high level into
Enter the cathode power supply input terminal of light-operated circuit, high level after photo resistance RL1, resistance R1 enter the base stage of NPN triode Q1,
Supply voltage be lower than NPN triode Q1 base stage 0.7V starting voltage, NPN triode Q1 end its collector no longer export it is low
Level enters relay K1 negative power supply input terminal, then, relay K1 power loss be no longer attracted its control power input and often
Closed contact end closure, since relay K1 controls the cathode of power input and second set of DC-DC power supply modules A 5
Two power inputs of backlight luminous board H are separately connected in 5 foot of power output end and LED display ontology, and relay K1 is normally closed
Tip side and 4 feet of second set of DC-DC power supply modules A 5 communicate, so this moment, 18V DC power supply can be aobvious into LED
The power input both ends of backlight luminous board H in display screen ontology, then, backlight luminous board H is under 3/4ths or so operating voltages, electric current
Work, display screen light emission luminance reach the maximum brightness 3/4ths or so that user is arranged through remote control panel or operation panel,
Meet evening user to watch under the premise of the brightness needs of display screen video, moreover it is possible to reach energy saving and obtain purpose, by above-mentioned, light
Circuit is controlled when someone is located at meeting room or Administrative Area, can be automatically controlled in LED display ontology and be carried on the back according to ambient brightness
Two kinds of light emission luminance of light lamp plate H.In the utility model, if user do not need light-operated circuit control backlight luminous board H, directly turn
The handle of stirring for changing power switch SK is stirred (only need to operate once, can no longer be operated later) to the left, then, conversion electricity
The power input 1 and 2 feet of source switch SK is connected to power output end 5 and 6 feet respectively, and the power supply of conversion electric power switch SK is defeated
Enter 1 and 2 feet of end to open a way with power output end 3 and 4 feet respectively, due to the second road power output end 5 of conversion electric power switch SK
And 6 foot connected respectively through conducting wire with the intrinsic backlight luminous board H power input both ends of LED display, in this way, LED display sheet
The 24V DC power supply of internal portion main control board A output can be directly entered the power supply two of backlight luminous board H in LED display ontology
Pole, then, backlight luminous board H work under full operating voltage, electric current, and display screen light emission luminance reaches user through remote control panel
Or the maximum brightness of operation panel setting, use are more flexible and convenient.The utility model has reached automatic control, energy conservation, and improves
The purpose of product competitiveness in the market, the application prospect having had.
Shown in Fig. 2, adjustable resistance RP specification is 1M；Diode VD model is 1N4148；Electrolytic capacitor C1 specification is 47 μ
F/25V；Resistance R1 resistance value is 47K；Photo resistance RL1 model is MD45；NPN triode Q1 model is 9013；Relay K1 is
The happy DC12V miniature relay of brand pine, there are two power input, a normally opened contact end, normally closed electric shock end, one for tool
A control power input.
The advantages of basic principles and main features and the utility model of the utility model have been shown and described above, for
For those skilled in the art, it is clear that the utility model is limited to the details of above-mentioned exemplary embodiment, and without departing substantially from this reality
In the case where with novel spirit or essential attributes, the utility model can be realized in other specific forms.Therefore, no matter from
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by appended
Claim rather than above description limit, it is intended that the institute that will be fallen within the meaning and scope of the equivalent elements of the claims
It changes and is embraced therein.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (4)
1. a kind of intelligent display screen, including LED display ontology, DC-DC power supply module, conversion electric power switch, special
Sign is also there is infrared detection circuit, light-operated circuit, and infrared detection circuit, DC-DC power supply module, turns light-operated circuit
It changes power switch to be mounted on the circuit board of LED display body interior, the switched power output of LED display body interior
It is connected respectively through conducting wire with the power input both ends of first set DC-DC power supply module, first set DC-DC power supply mould
The power supply output both ends of block are connected with the power input both ends of infrared detection circuit through conducting wire respectively, the anode of infrared detection circuit
The positive and negative polarities power input of power output end, the Switching Power Supply cathode output end of LED display body interior and light-operated circuit
End is connected through conducting wire respectively, the backlight luminous board power supply line of main control board and conversion electric power switch in LED display ontology two
A power input is connected through conducting wire respectively, the first via power output end of conversion electric power switch and second set of DC to DC electricity
The power input both ends of source module are connected through conducting wire respectively, the second road power output end and LED display of conversion electric power switch
Intrinsic backlight luminous board power input both ends are connected through conducting wire respectively, and the first and second of second set of DC-DC power supply module
Road power output end anode is connected with two control power inputs of light-operated circuit through conducting wire respectively, the control electricity of light-operated circuit
Backlight luminous board in source output terminal and the negative power supply output end and LED display ontology of second set of DC-DC power supply module
Two power inputs connected respectively through conducting wire, infrared detection circuit include pyroelectricity detecting module and control sub-circuit, control
System circuit is mounted on the circuit board of LED display body interior, has one at the front lower middle part of the shell of LED display ontology
Opening, pyroelectricity detecting module are mounted in opening, and pyroelectricity detecting module is configured with a Fresnel lens, and Fresnel is saturating
Eyeglass is mounted on open front and is located at the detecting head front end of pyroelectricity detecting module.
2. a kind of intelligent display screen according to claim 1, it is characterised in that there are two power supplys for conversion electric power switch tool
Input terminal, two-way power output end.
3. a kind of intelligent display screen according to claim 1, it is characterised in that the pyroelectricity of infrared detection circuit detects
Module is the thermal release electric infra-red ray detecting module of model HN911L, and control sub-circuit includes adjustable resistance, diode, electrolysis electricity
Hold, switch integrated circuit, connected therebetween through circuit board wiring, switch integrated circuit model is TWH8778, and thermal release electric infra-red ray is visited
3 foot of cathode power supply input terminal for surveying module is connected with 1 foot of cathode power supply input terminal of switch integrated circuit, and thermal release electric infra-red ray is visited
6 foot of negative power supply input terminal for surveying module is connected with 4 foot of negative power supply input terminal, the electrolytic capacitor cathode of switch integrated circuit,
1 foot of power output end of thermal release electric infra-red ray detecting module is connected with diode cathode, diode cathode and electrolytic capacitor anode,
The connection of 5 foot of switch integrated circuit control terminal, the outer connecting resistance both ends 4 of adjustable resistance both ends and thermal release electric infra-red ray detecting module and
5 feet are separately connected.
4. a kind of intelligent display screen according to claim 1, it is characterised in that light-operated circuit includes photo resistance, electricity
Resistance, NPN triode and relay, connect through circuit board wiring, photo resistance one end and relay cathode power supply input terminal therebetween
Connection, the photo resistance other end are connected with resistance one end, and the resistance other end is connected with NPN transistor base, NPN triode current collection
Pole is connected with relay negative power supply input terminal, and the light-receiving surface of photo resistance is located at before the shell of LED display ontology outside aperture
Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920773420.1U CN209708605U (en) | 2019-05-27 | 2019-05-27 | A kind of intelligent display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920773420.1U CN209708605U (en) | 2019-05-27 | 2019-05-27 | A kind of intelligent display screen |
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| Publication Number | Publication Date |
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| CN209708605U true CN209708605U (en) | 2019-11-29 |
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| CN201920773420.1U Expired - Fee Related CN209708605U (en) | 2019-05-27 | 2019-05-27 | A kind of intelligent display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117995085A (en) * | 2024-02-01 | 2024-05-07 | 江苏拓永科技有限公司 | Virtual interactive multimedia interactive display device and system thereof |
-
2019
- 2019-05-27 CN CN201920773420.1U patent/CN209708605U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117995085A (en) * | 2024-02-01 | 2024-05-07 | 江苏拓永科技有限公司 | Virtual interactive multimedia interactive display device and system thereof |
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Granted publication date: 20191129 |