CN205788143U - A kind of infrared touch device - Google Patents
A kind of infrared touch device Download PDFInfo
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- CN205788143U CN205788143U CN201620426470.9U CN201620426470U CN205788143U CN 205788143 U CN205788143 U CN 205788143U CN 201620426470 U CN201620426470 U CN 201620426470U CN 205788143 U CN205788143 U CN 205788143U
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- infrared
- lamp
- circuit
- discharge lamps
- touch device
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Abstract
This utility model relates to infrared touch panel field, particularly relates to a kind of infrared touch device.Including frame main body, radiating circuit, reception circuit and control circuit；Frame main body includes multiple lamp plate；Lamp plate is disposed with some infrared lamps along its length, and infrared lamp includes the infrared discharge lamps for launching Infrared, for receiving the infrared receiver lamp of Infrared.Radiating circuit electrically connects with infrared discharge lamps to drive infrared discharge lamps to launch Infrared, receive circuit to electrically connect with infrared receiver lamp to drive infrared receiver lamp to receive Infrared, control circuit electrically connects with radiating circuit, control circuit electrically connects with receiving circuit, lamp plate has the head end being provided with infrared discharge lamps and the tail end being provided with infrared receiver lamp, lamp plate is positioned at the infrared lamp at lamp plate two ends and is respectively infrared discharge lamps and infrared receiver lamp, the head end of multiple lamp plates and tail end connection formation frame main body.
Description
Technical field
This utility model relates to infrared touch panel field, particularly relates to a kind of infrared touch device.
Background technology
Conventional rectangle infrared touch frame a long limit and minor face wherein all arrange emission lamp, on another long limit and short
Reception lamp is all arranged on limit.When receiving lamp and being blocked, can be in formation touch point, frame touch area.Conventional emission lamp and reception
The mode of lamp solid matter, between lamp and lamp continuously every.The lamp quantity used required for this solid matter mode is more, additionally, due to reception
Lamp price is relatively expensive, and the touch frame causing production is relatively costly.
Authorization Notice No. is CN 205121527 U, and authorized announcement date is that the utility model patent of on 03 30th, 2016 is public
A kind of infrared touch panel circuit board, and the infrared touch screen frame being made up of it are opened.One is used to receive corresponding many of lamp
The scan mode of emission lamp calculates touch point, thus reduces the usage amount receiving lamp, reduces cost.Circuit board is connected with each other
Head end and tail end is respectively provided with infrared discharge lamps and infrared receiver lamp avoids and touching frame edge and cannot sense the feelings of touch
Condition, on the premise of the sensitivity ensureing touch screen, reduces cost.
Utility model content
The infrared touch screen frame that this utility model is constituted based on above-mentioned infrared touch panel circuit board, it is provided that a kind of infrared tactile
Touch equipment, cost-effective, a kind of infrared touch device that sensitivity is high.Including frame main body, radiating circuit, reception circuit with
And control circuit；Described frame main body includes multiple lamp plate；Described lamp plate is disposed with some infrared lamps along its length, described red
Outer lamp includes the infrared discharge lamps for launching Infrared, for receiving the infrared receiver lamp of Infrared；Described transmitting electricity
Road electrically connects with described infrared discharge lamps to drive described infrared discharge lamps to launch Infrared, and described reception circuit is red with described
The electrical connection of outer reception lamp is to drive described infrared receiver lamp to receive Infrared, and described control circuit is electrically connected with described radiating circuit
Connecing, described control circuit electrically connects with described reception circuit；It is characterized in that: described lamp plate has and is provided with infrared discharge lamps
Head end and the tail end being provided with infrared receiver lamp, described lamp plate is positioned at the infrared lamp at described lamp plate two ends and is respectively infrared discharge lamps
Connect with infrared receiver lamp, the head end of multiple described lamp plates and tail end and form described frame main body；The number of described infrared receiver lamp
Measure fewer than the quantity of described infrared discharge lamps.A scan mode receiving corresponding many emission lamps of lamp is used to calculate touch
Point, thus reduce the usage amount receiving lamp, reduce cost.Further, the interconnective head end of described lamp plate and tail end have respectively
Infrared discharge lamps and infrared receiver lamp is had to avoid the situation that cannot sense touch at touch frame edge.
As preferably, described radiating circuit includes emission lamp drive circuit and emission lamp gating circuit, and described emission lamp drives
Circuit electrically connects with described infrared discharge lamps, and described emission lamp gating circuit electrically connects with described emission lamp drive circuit.Described
Emission lamp gating circuit gating needs the infrared discharge lamps lighted, and drives described infrared emission by described emission lamp drive circuit
Lamp launches infrared ray according to the time set.
As preferably, described reception circuit includes signal amplification circuit and receives gating circuit, described signal amplification circuit
Electrically connecting with described reception gating circuit, described reception gating circuit electrically connects with described infrared receiver lamp.Described reception gates
Circuit gating needs the infrared receiver lamp of sampling, gathers infrared data and is amplified by described signal amplification circuit.
As preferably, described control circuit includes the control unit being provided with power interface and communication interface, described control electricity
Road electrically connects with described radiating circuit, and described control circuit electrically connects with described reception circuit.
As preferably, described emission lamp drive circuit includes that emission lamp drives module, and described emission lamp gating circuit includes
Emission lamp group choosing switch；The control end of described emission lamp group choosing switch connects described control circuit, described emission lamp group choosing switch
Outfan connect described emission lamp drive module；Described emission lamp drives module to electrically connect with described control circuit, described
Shot-light drives module to electrically connect with described infrared discharge lamps.
As preferably, described signal amplification circuit includes one-level amplifying circuit and second amplifying circuit, and described reception gates
Circuit includes receiving lamp gating switch, and described one-level amplifying circuit connects described infrared receiver lamp and described reception lamp gating switch
Multiterminal, described second amplifying circuit connect described reception lamp gating switch single-ended and described control circuit.
As preferably, described communication interface is USB interface and/or UART interface.
As preferably, described infrared lamp is equidistantly distributed on described lamp plate.The equidistant distribution of described infrared lamp, favorably
In simplifying the algorithm calculating touch point.
This utility model has the advantages that this infrared touch device uses one to receive corresponding many emission lamps of lamp
Scan mode calculate touch point, thus reduce the usage amount receiving lamp, reduce cost.The interconnective head end of lamp plate and
Tail end is respectively provided with infrared discharge lamps and infrared receiver lamp avoids the situation that cannot sense touch at touch frame edge, is ensureing
On the premise of the sensitivity of touch screen, reduce cost.Lamp plate uses unified bank light mode, conveniently carries out unifying to produce and letter
Change mounting process, improve production efficiency.
Accompanying drawing explanation
Fig. 1 infrared touch screen frame structural representation.
Fig. 2 infrared touch device system diagram.
Fig. 3 radiating circuit schematic diagram.
Fig. 4 emission lamp drive circuit figure.
Fig. 5 receives circuit diagram.
Wherein, 1-infrared touch screen frame, 11-lamp plate, 121-infrared discharge lamps, 122-infrared receiver lamp, 1211-launch
Lamp group choosing switch, 1221-multiway analog switch.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
Embodiment one
A kind of infrared touch device, including infrared touch screen frame 1 as shown in Figure 1, this infrared touch screen frame 1 is by four
Bar lamp plate 11 joins end to end and splices composition.The front of lamp plate 11 is disposed with some infrared lamps the most equally spacedly, infrared
Lamp includes the infrared discharge lamps 121 for launching Infrared, for receiving the infrared receiver lamp 122 of Infrared.Adjacent two
The infrared discharge lamps 121 of fixed qty is set between infrared receiver lamp 122.In order to reasonably utilize infrared receiver lamp 122
Range of receiving, the infrared discharge lamps quantity being arranged between adjacent infrared receiver lamp 122 is preferably 6-8, adopts in the present embodiment
With 7.
The back side of lamp plate 11 is provided with for driving infrared discharge lamps 121 to launch the radiating circuit of Infrared and for driving
Dynamic infrared receiver lamp 122 receives the reception circuit of Infrared.Radiating circuit includes emission lamp drive circuit and emission lamp gating
Circuit；Receive circuit include signal amplification circuit and receive gating circuit.The control circuit of infrared touch device and radiating circuit
Electrical connection, by radiating circuit according to the default bright infrared discharge lamps of time point；The controller MCU of infrared touch device and reception
Circuit electrically connects, and gathers, by receiving circuit, the infrared signal that infrared receiver lamp gathers；Controller MCU is provided with USB interface so that
Infrared touch device can connect external power source by USB interface and obtain electricity, or connects external equipment number by this interface
According to communication；Controller MCU can also arrange UART serial line interface, connects external device data communication by UART serial line interface.
Emission lamp on touch apparatus frame 1 is divided into x group, and often group comprises y lamp.The most in the present embodiment, will
Adjacent two infrared 7 infrared discharge lamps connect between lamp are divided into one group.
Such as Fig. 3, emission lamp gating circuit includes the emission lamp group gating switch 1211 controlling each infrared discharge lamps group, this reality
Executing in example, this emission lamp gating switch is a kind of decoder.The control end of this decoder is connected to controller MCU, this decoder
Outfan connect one to one with each infrared discharge lamps group.
Such as Fig. 4, emission lamp drive circuit includes and each infrared discharge lamps group audion Q16 one to one, and with respectively
Infrared discharge lamps audion Q17 one to one, audion Q16 and audion Q17 constitute emission lamp and drive module.In each group
The positive pole of infrared discharge lamps in parallel, be connected to the colelctor electrode of the audion Q16 of correspondence, the base stage of audion Q16 is connected to electricity
The emitter stage of resistance R61, audion Q16 connects power supply VCC；The colelctor electrode of audion Q17 is connected to the negative of infrared discharge lamps 121
Pole, the grounded emitter of audion Q17, the base stage of audion Q17 is connected to resistance R102.
The other end of the resistance R61 of emission lamp drive circuit is connected to the outfan of decoder.This decoder according to from
The address signals of controller MCU, exports the control signal that the infrared discharge lamps group at the infrared discharge lamps place needing gating is corresponding,
Thus controlling the Q16 conducting corresponding with this infrared discharge lamps group so that the positive pole of this infrared discharge lamps turns on power supply VCC.
The other end of the resistance R102 of emission lamp drive circuit is connected to controller MCU.Controller MCU exports control signal
To audion Q17, can be by triode ON, so that need the minus earth of the infrared discharge lamps of gating.
When controlling an infrared discharge lamps and lighting, need the control of positive pole and the negative pole end simultaneously gating this infrared discharge lamps
Signal processed.Accordingly, it would be desirable to first pass through controller MCU to output signal to control end (the i.e. decoder of emission lamp group choosing switch 1211
Address control end), gate the audion Q16 that the infrared discharge lamps group at this infrared discharge lamps place is corresponding；By controller MCU
Output signal to the audion Q17 that this infrared discharge lamps is corresponding so that the positive pole of this infrared discharge lamps and negative pole simultaneously turn on from
And be lit.
Signal amplification circuit includes one-level amplifying circuit and second amplifying circuit, receives gating circuit and includes that multi-channel analog is opened
Close 1221.Wherein, one-level amplifying circuit is and each infrared receiver lamp 122 transistor amplifier one to one, and one-level is amplified
The input of circuit is connected to the signal output part of infrared receiver lamp 122, and the outfan of one-level amplifying circuit is connected to multichannel mould
Intend the multiterminal of switch 1221；The single-ended input being connected to second amplifying circuit of multiway analog switch 1221, multi-channel analog is opened
The control end closing 1221 is connected to controller MCU；Second amplifying circuit can also use transistor amplifier, and two grades are amplified electricity
The outfan on road is connected to controller MCU.Multiway analog switch 1221 is according to the control signal from controller MCU, it would be desirable to
The multiterminal that the one-level amplifying circuit of the infrared receiver lamp of gating is corresponding connect with single-ended so that it is infrared that this infrared receiver lamp gathers
Signal transmits to second amplifying circuit through one-level amplifying circuit, and after second amplifying circuit amplifies again, transmission is to controller
MCU carries out sampling processing.
In order to simplify the structure of whole infrared touch device, circuit, radiating circuit and lamp plate Integral design will be received, simplify
The structure of touch screen, reduces the volume of touch screen.
In order to avoid two adjacent lamp plate junctions all arrange that infrared receiver fluorescent tube 122 causes the marginal area of touch frame
The situation of touch cannot be sensed.The infrared lamp being distributed in lamp plate 11 two ends need to be respectively infrared discharge lamps and infrared receiver lamp.For
Each lamp plate 11 is assembled and is spliced into touch screen frame by convenience, and the head end being unified in fluorescent tube 11 arranges infrared discharge lamps 121, at lamp
The tail end of plate 11 arranges infrared receiver lamp 122.
Although being described in conjunction with the accompanying embodiment of the present utility model, but those of ordinary skill in the art can be in institute
Various deformation or amendment is made in the range of attached claim.
Claims (10)
1. an infrared touch device, including frame main body, radiating circuit, reception circuit and control circuit；Described frame master
Body includes multiple lamp plate；Described lamp plate is disposed with some infrared lamps along its length, and described infrared lamp includes for launching infrared
The infrared discharge lamps of light, for receiving the infrared receiver lamp of Infrared；Described radiating circuit and described infrared discharge lamps electricity
Connecting to drive described infrared discharge lamps to launch Infrared, described reception circuit electrically connects with described infrared receiver lamp to drive
Described infrared receiver lamp receives Infrared, and described control circuit electrically connects with described radiating circuit, described control circuit and institute
State reception circuit electrical connection；It is characterized in that: described lamp plate has the head end being provided with infrared discharge lamps and is provided with infrared connecing
Receiving the tail end of lamp, described lamp plate is positioned at the infrared lamp at described lamp plate two ends and is respectively infrared discharge lamps and infrared receiver lamp, multiple
The head end of described lamp plate and tail end connect the described frame main body of formation；The quantity of described infrared receiver lamp is than described infrared discharge lamps
Quantity few.
A kind of infrared touch device the most according to claim 1, it is characterised in that: described radiating circuit includes that emission lamp drives
Galvanic electricity road and emission lamp gating circuit, described emission lamp drive circuit electrically connects with described infrared discharge lamps, and described emission lamp selects
Circuit passband electrically connects with described emission lamp drive circuit.
A kind of infrared touch device the most according to claim 2, it is characterised in that: described reception circuit includes that signal amplifies
Circuit and reception gating circuit, described signal amplification circuit electrically connects with described reception gating circuit, described reception gating circuit
Electrically connect with described infrared receiver lamp.
A kind of infrared touch device the most according to claim 3, it is characterised in that: described control circuit includes being provided with power supply
Interface and the control unit of communication interface, described control circuit electrically connects with described radiating circuit, and described control circuit is with described
Reception circuit electrically connects.
A kind of infrared touch device the most according to claim 4, it is characterised in that: described emission lamp drive circuit includes sending out
Shot-light drives module, and described emission lamp gating circuit includes emission lamp group choosing switch；The control end of described emission lamp group choosing switch
Connecting described control circuit, the outfan of described emission lamp group choosing switch connects described emission lamp and drives module；Described emission lamp
Driving module to electrically connect with described control circuit, described emission lamp drives module to electrically connect with described infrared discharge lamps.
A kind of infrared touch device the most according to claim 4, it is characterised in that: described signal amplification circuit includes one-level
Amplifying circuit and second amplifying circuit, described reception gating circuit includes receiving lamp gating switch, and described one-level amplifying circuit is even
Connecing described infrared receiver lamp and the multiterminal of described reception lamp gating switch, described second amplifying circuit connects described reception lamp gating
Single-ended and the described control circuit of switch.
7. according to a kind of infrared touch device described in claim 5 or 6, it is characterised in that: described communication interface is USB interface
And/or UART interface.
A kind of infrared touch device the most according to claim 7, it is characterised in that: described infrared lamp is first-class at described lamp plate
Spacing is distributed.
A kind of infrared touch device the most according to claim 8, it is characterised in that: divide between adjacent described infrared receiver lamp
It is furnished with the infrared discharge lamps of fixed qty.
A kind of infrared touch device the most according to claim 9, it is characterised in that: between adjacent described infrared receiver lamp
6-8 infrared discharge lamps is distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620426470.9U CN205788143U (en) | 2016-05-12 | 2016-05-12 | A kind of infrared touch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620426470.9U CN205788143U (en) | 2016-05-12 | 2016-05-12 | A kind of infrared touch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205788143U true CN205788143U (en) | 2016-12-07 |
Family
ID=57409011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620426470.9U Ceased CN205788143U (en) | 2016-05-12 | 2016-05-12 | A kind of infrared touch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205788143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611101A (en) * | 2021-09-01 | 2021-11-05 | 杭州粒合信息科技有限公司 | Centralized meter box and infrared communication method thereof |
-
2016
- 2016-05-12 CN CN201620426470.9U patent/CN205788143U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611101A (en) * | 2021-09-01 | 2021-11-05 | 杭州粒合信息科技有限公司 | Centralized meter box and infrared communication method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20211129 Decision number of declaring invalidation: 52771 Granted publication date: 20161207 |
|
| IW01 | Full invalidation of patent right |