CN207123829U - The key switch screen system of touch sensible one of electronic blackboard - Google Patents
The key switch screen system of touch sensible one of electronic blackboard Download PDFInfo
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- CN207123829U CN207123829U CN201721143578.8U CN201721143578U CN207123829U CN 207123829 U CN207123829 U CN 207123829U CN 201721143578 U CN201721143578 U CN 201721143578U CN 207123829 U CN207123829 U CN 207123829U
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- electronic blackboard
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Abstract
The utility model discloses a kind of key switch screen system of touch sensible one of electronic blackboard, including power panel, soft-touch control, power regulator, status indicator lamp, delay circuit plate, built-in OPS computers, USB pinboards and touch control film control panel.Power panel exports two-way+12VDC power supplys, the first via+12VDC power supplys are connected through soft-touch control with the input of power regulator, the output end of power regulator exports three tunnel+5VDC power supplys, the first via+5VDC power supplys connect backlight control circuit, second tunnel+5VDC power supply connection status indicator lamps, the 3rd tunnel+5VDC power supplys connection delay circuit plate；OPS computers built in second tunnel+12VDC power supplys connection, the USB port of built-in OPS computers are connected with USB pinboards, and the USB port of USB pinboards connects external PC and delay circuit plate, the USB port connection touch control film control panel of delay circuit plate.The utility model makes a key switch screen convenient use of electronic blackboard, and cost is lower, stablizes durable, more technology sense.
Description
Technical field
The utility model belongs to electronic blackboard technical field, is related to a kind of key switch screen system of touch sensible one of electronic blackboard
System.
Background technology
As the propulsion and large screen display of teaching modernization and the progress of touch control technology, electronic blackboard are each in each row
Industry especially education sector obtains more and more extensive application.
Electronic blackboard needs a key to close the function (shut-off backlight) of shielding in actual use.Existing electronic blackboard is adopted mostly
Form is touched with infrared induction, is made up of infrared induction head and control board two parts.Following one be present in the structure type
A little problems：
1st, it is complicated
System is made up of infrared induction head and control board two parts, infrared induction head among the bottom of display screen,
In the middle part of control board display screen, between line it is essential, see the junction block including correlation, relay from installation material object
Deng making overall structure relative complex.
2nd, process cumbersome
Due to be infrared induction, it is necessary at infrared induction head printing opacity, silk-screen printing can not be done herein.Also to determine during installation
Position, increase line, bothered with respect to technics comparing.
3rd, paste coarse
Infrared induction head is coupled with the fixation of glass substrate using PUR, both unsightly, and it is easy to fall off, when particularly long
Between after, paste form relative coarseness.
4th, easily raw interference
The control for shielding body is infrared remote control mode, and sensing touches and infrared form, is easily made when carrying out infrared remote control
Into the malfunction of switchboard.
5th, cost is higher
Cost includes three circuit board processing, installation processing and construction technology aspects, and the structure is without under 50 yuan of cost
Do not come.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of key switch screen system of touch sensible one of electronic blackboard, mesh
The key switch screen for being to make electronic blackboard it is more convenient to use, cost is lower, stablizes durable, and more technology sense.
In order to achieve the above object, solution of the present utility model is：
A kind of touch sensible one key switch screen system of electronic blackboard, including power panel, soft-touch control, power regulator,
Status indicator lamp, delay circuit plate, built-in OPS computers, USB pinboards and touch control film control panel；
Power panel output+12VDC the power supplys ,+12VDC power supplys are divided into two-way, and the first via+12VDC power supplys pass through
Input after the soft-touch control with the power regulator is connected, the output end output+5VDC electricity of the power regulator
The source ,+5VDC power supplys are divided into three tunnels, the power supply of the backlight control circuit of the first via+5VDC power supplys connection LCD display panel
Hold, the status indicator lamp, the 3rd tunnel+5VDC power supplys connection delay electricity are connected after the second tunnel+5VDC power sources in series resistance
The feeder ear of road plate；The feeder ear for the second tunnel+12VDC power supplys connection built-in OPS computers that the power panel provides, it is described
The USB port of built-in OPS computers is connected with the first USB port of the USB pinboards, the 2nd USB ends of the USB pinboards
Mouth connects external PC, and the 3rd USB port of the USB pinboards is connected with the first USB port of the delay circuit plate, described
Second USB port of delay circuit plate is connected with the USB port of the touch control film control panel.
According to one side of the present utility model, the soft-touch control is capacitor type touch switch.
According to one side of the present utility model, the power regulator is the 78L05 series voltage regulators of SOT-89 encapsulation.
According to one side of the present utility model, the delay time of the delay circuit plate is 1.5S.
According to one side of the present utility model, the touch control film control panel is arranged in the middle mainboard of electronic blackboard,
The power panel, soft-touch control, power regulator, status indicator lamp, delay circuit plate, built-in OPS computers, USB pinboards peace
In the right side subplate of electronic blackboard.
Due to being using such scheme, the beneficial effects of the utility model：
The key switch screen system of touch sensible one of electronic blackboard of the present utility model, one is realized by capacitance plate soft-touch control
Key switch screen function ,+the 12VDC that soft-touch control exports is converted to by+5VDC by power regulator and supplies backlight control, and led to
Used after crossing delay circuit plate delay 1.5S for touch control film control panel.The utility model can make a key switch screen of electronic blackboard
More convenient to use, cost is lower, stablizes durable, and more technology sense.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other accompanying drawings.
Fig. 1 is system connected mode figure of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
System of the present utility model composition is as shown in figure 1, the key switch screen system of touch sensible one of electronic blackboard, including electricity
Source plate 101, soft-touch control 102, power regulator 103, status indicator lamp 104, delay circuit plate 105, built-in OPS computers 106,
USB pinboards 107 and touch control film control panel 109.
Electronic blackboard includes middle mainboard and the subplate of arranged on left and right sides.The back side of middle mainboard is provided with LCD display surfaces
Plate.Middle mainboard is mainly used as LCD and shown, has chalk and electronic writing dual-use function.Subplate is also known as clipboard, as chalk
Writing.
In the utility model, touch control film control panel 109 is mounted in middle mainboard, and remaining power panel 101, touch are opened
It is equal to close 102, power regulator 103, status indicator lamp 104, delay circuit plate 105, built-in OPS computers 106, USB pinboards 107
In the subplate of right side.
Specific connected mode of the present utility model is as shown in figure 1, power panel 101 provides+12VDC power supplys ,+12VDC power supplys
It is divided into two-way, input of the first via+12VDC power supplys with power regulator 103 after soft-touch control 102 is connected, and power supply is steady
Output end output+5VDC the power supplys of depressor 103 ,+5VDC power supplys are divided into three tunnels, the first via+5VDC power supplys connection LCD display panel
Backlight control circuit feeder ear, connection status indicator lamp 104 after the second tunnel+5VDC power sources in series 1k resistance, the 3rd tunnel+
The feeder ear of 5VDC power supplys connection delay circuit plate 105.
The feeder ear of OPS computers 106, built-in OPS computers built in the second tunnel+12VDC power supplys connection that power panel 101 provides
106 USB port 108-1 is connected with the first USB port 108-2 of USB pinboards 107, the 2nd USB ends of USB pinboards 107
The mouth 108-3 external PC of connection, the 3rd USB port 108-4 of USB pinboards 107 and the first USB port of delay circuit plate 105
108-5 is connected, and the second USB port 108-6 of delay circuit plate 105 is connected with the USB port 108-7 of touch control film control panel 109.
Circuit operation principle of the present utility model is as follows：
With reference to figure 1 ,+12VDC power supplys are provided by power panel 101, are powered all the way to built-in OPS computers 106, all the way through touching
Still exported after switch 102 for+12VDC, and the input of the backlight control voltage of LCD display panel and touch control film control panel 109 is electric
Pressure is+5VDC, it is therefore desirable to 5VDC power regulator 103 ,+the 12VDC that soft-touch control 102 exports is converted to+
5VDC supplies backlight control, and needs to be delayed after 1.5S by delay circuit plate 105 and used for touch control film control panel 109.USB turns
The effect of fishplate bar 107 is USB alternatives, the USB port of OPS computers or external PC USB port built in gating.
Part of the present utility model is general off-the-shelf.
Built-in OPS computers 106 are the pluggable computer modules of evolution formula, can be plugged, and make integral layout attractive in appearance.OPS
Full name is：Open Pluggable Specification, open pluggable specification, is Intel and NEC, and Micsoft is common
The standardized digital label interface specification of formulation.
Soft-touch control 102 uses capacitance touch pattern, can be used in below nonmetallic any material and do hidden switch, it is touched
The scope for touching sensing is 3~4cm, input voltage 8V-24VDC, and output voltage is equal to input voltage, can when 12VDC is inputted
Load-carrying power is 80W, and is provided with status indicator lamp.Front is provided with 3M double faced adhesive tapes, can be affixed directly to appointing for glass substrate
What position, it is both artistic and practical.
The 78L05 series voltage regulators that power regulator 103 is encapsulated using SOT-89.78L05 has three pins, and left foot connects+
12VDC, right crus of diaphragm export for+5VDC, and crura intermedium is connected with ground wire.Wrapped after completing welding with the heat-shrinkable T bush of correlation.
Delay circuit plate 108, using existing universal time-delay circuit design, such as capacitance-resistance delayer and triode can be used
Forming, the product of capacitance-resistance delayer is to charge to the time of supply voltage 90%, and the working power voltage of delay circuit is+5V,
The delay time when base voltage for charging to the first triode ON is 0.7V is 1.5S.Second triode is driving tube, with
The power port of USB socket is directly connected to, and for the power supply to touch control film control panel, the power consumption of touch control film control panel mostly exists
0.5W or so, i.e. operating current are about 100mA.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using originally special
Profit.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without by performing creative labour.Therefore, the utility model is not limited to here
Embodiment, those skilled in the art according to announcement of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within the scope of protection of the utility model.
Claims (5)
- A kind of 1. key switch screen system of touch sensible one of electronic blackboard, it is characterised in that：Including power panel, soft-touch control, electricity Source voltage-stablizer, status indicator lamp, delay circuit plate, built-in OPS computers, USB pinboards and touch control film control panel；Power panel output+12VDC the power supplys ,+12VDC power supplys are divided into two-way, described in the first via+12VDC power supplys pass through Input after soft-touch control with the power regulator is connected, the output end output+5VDC power supplys of the power regulator, institute State+5VDC power supplys and be divided into three tunnels, the feeder ear of the backlight control circuit of the first via+5VDC power supplys connection LCD display panel, second The status indicator lamp is connected after+5VDC power sources in series the resistance of road, the 3rd tunnel+5VDC power supplys connect the confession of the delay circuit plate Electric end；The feeder ear for the second tunnel+12VDC power supplys connection built-in OPS computers that the power panel provides, the built-in OPS The USB port of computer is connected with the first USB port of the USB pinboards, the second USB port connection of the USB pinboards External PC, the 3rd USB port of the USB pinboards are connected with the first USB port of the delay circuit plate, the delay electricity Second USB port of road plate is connected with the USB port of the touch control film control panel.
- 2. the key switch screen system of touch sensible one of electronic blackboard according to claim 1, it is characterised in that the touch Switch as capacitor type touch switch.
- 3. the key switch screen system of touch sensible one of electronic blackboard according to claim 1, it is characterised in that the power supply Voltage-stablizer is the 78L05 series voltage regulators of SOT-89 encapsulation.
- 4. the key switch screen system of touch sensible one of electronic blackboard according to claim 1, it is characterised in that the delay The delay time of circuit board is 1.5S.
- 5. the key switch screen system of touch sensible one of the electronic blackboard according to any one of Claims 1-4, its feature exist Be arranged in, the touch control film control panel in the middle mainboard of electronic blackboard, the power panel, soft-touch control, power regulator, Status indicator lamp, delay circuit plate, built-in OPS computers, USB pinboards are arranged in the right side subplate of electronic blackboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143578.8U CN207123829U (en) | 2017-09-07 | 2017-09-07 | The key switch screen system of touch sensible one of electronic blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143578.8U CN207123829U (en) | 2017-09-07 | 2017-09-07 | The key switch screen system of touch sensible one of electronic blackboard |
Publications (1)
| Publication Number | Publication Date |
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| CN207123829U true CN207123829U (en) | 2018-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721143578.8U Active CN207123829U (en) | 2017-09-07 | 2017-09-07 | The key switch screen system of touch sensible one of electronic blackboard |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020083042A1 (en) * | 2018-10-26 | 2020-04-30 | 珠海中电数码科技有限公司 | Combined smart full-screen blackboard |
-
2017
- 2017-09-07 CN CN201721143578.8U patent/CN207123829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020083042A1 (en) * | 2018-10-26 | 2020-04-30 | 珠海中电数码科技有限公司 | Combined smart full-screen blackboard |
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