CN209216071U - Hollow circuit block infrared touch display - Google Patents
Hollow circuit block infrared touch display Download PDFInfo
- Publication number
- CN209216071U CN209216071U CN201821749285.9U CN201821749285U CN209216071U CN 209216071 U CN209216071 U CN 209216071U CN 201821749285 U CN201821749285 U CN 201821749285U CN 209216071 U CN209216071 U CN 209216071U
- Authority
- CN
- China
- Prior art keywords
- signal
- infrared
- circuit
- resistance
- chip microcontroller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Position Input By Displaying (AREA)
Abstract
The utility model discloses a kind of hollow circuit block infrared touch displays, flexible multi-layer circuit board, quartz-crystal resonator, infrared transmission module, infrared receiving module, single-chip microcontroller and display including being in hollow；It is respectively equipped with corresponding infrared transmission module and infrared receiving module on one group of opposite side of the flexible multi-layer circuit board, is respectively equipped with corresponding infrared transmission module and infrared receiving module on another group of opposite side；The infrared transmission module includes signal modulation circuit and infrared transmitting circuit；The infrared receiving module includes infrared receiving circuit, signal amplification circuit and signal demodulating circuit；The quartz-crystal resonator and single-chip microcontroller are set to the back side of display.The utility model can effectively increase the anti-interference ability of infrared touch panel, and effectively reduce encapsulation volume, using single side glue, stability is good, antivibration, and independent controller is put in the complete machine cavity back side by extended line, it is very beneficial for EMC processing, comprehensive cost performance is also very high.
Description
Technical field
The utility model relates to Infrared touch screen technology field, especially a kind of hollow circuit block infrared touch display.
Background technique
Infrared touch panel is in touch screen surrounding, and gather infrared transmitting tube and infrared receiving tube respectively, is constituted vertical and horizontal corresponding
The infrared tube matrix of distribution forms infrared ray grating, and user is when touching screen, when finger enters grating, has blocked by being somebody's turn to do
The vertical and horizontal infrared beam of position, thus can be changed by scouting the loss of infrared beam, to judge touch point on the screen
X-axis and Y-axis coordinate value, to position touch point.
In the transmitting-receiving application circuit of infrared touch panel, a branch of infrared signal issued by infrared transmitting tube is to infrared receiver
Pipe, the optical signal sensed is converted to electric signal by infrared receiving tube, and after carrying out suitable amplification by amplifying circuit, send to
Processor, after processor carries out A/D transformation to signal, by identification signal intensity, to judge whether infrared touch panel is touched.
But traditional infrared touch panel transmission circuit is highly susceptible to the interference of external infrared signal, such as IR remote controller hair
Signal or environmental disturbances signal out etc., be easy to cause the malfunction of infrared touch panel, poor anti jamming capability.
In addition, traditional infrared touch panel volume is big, step is deep, not antivibration, waits EMC Requirements high to military
Occasion is difficult to cope with.
Utility model content
Based on this, in view of the above-mentioned problems, it is necessary to propose a kind of hollow circuit block infrared touch display, the hollow circuit
Frame infrared touch display can effectively increase the anti-interference ability of infrared touch panel, and effectively reduce encapsulation volume, using single side
Glue, stability is good, antivibration, and independent controller is put in the complete machine cavity back side by extended line, is very beneficial at EMC
Reason, comprehensive cost performance are also very high.
The technical solution of the utility model is: a kind of hollow circuit block infrared touch display, the flexibility including being in hollow
Multilayer circuit board, quartz-crystal resonator, infrared transmission module, infrared receiving module, single-chip microcontroller and display；The flexibility is more
It is respectively equipped with corresponding infrared transmission module and infrared receiving module on one group of opposite side of layer circuit board, another group opposite
Corresponding infrared transmission module and infrared receiving module are respectively equipped on side；The infrared transmission module includes signal modulation electricity
Road and infrared transmitting circuit；The infrared receiving module includes infrared receiving circuit, signal amplification circuit and signal demodulating circuit；
The signal input part of the signal output end connection signal modulation circuit of the quartz-crystal resonator, the signal modulation circuit
The signal input part of signal output end connection infrared transmitting circuit；The signal output end connection signal of the infrared receiving circuit is put
The signal input part of big circuit, the signal input part of the signal output end connection signal demodulator circuit of the signal amplification circuit,
The signal input part of the signal output end connection single-chip microcontroller of the signal demodulating circuit, the signal output end connection of the single-chip microcontroller
The signal input part of display；The flexible multi-layer circuit board is set to the positive surrounding of display, the quartz-crystal resonator
The back side of display is set to single-chip microcontroller.
Preferably, between the quartz-crystal resonator and infrared transmission module, the infrared receiving module and single-chip microcontroller
Between, pass through corresponding golden finger interface between the single-chip microcontroller and display or FFC flexible cord connects.
Preferably, the quartz-crystal resonator, single-chip microcontroller and interface device are set on PCB and form independent control card.
Preferably, the signal demodulating circuit includes triode Q, resistance R1, resistance R2, resistance R3, resistance R4, capacitor
C1, capacitor C2 and capacitance C3；The signal output end of the base stage connection signal amplifying circuit of the triode Q, three pole
The collector of pipe Q is followed by DC power supply VCC by resistance R1；The emitter of the triode Q is grounded after resistance R2 all the way,
Another way connects the signal input part of single-chip microcontroller after resistance R3 and capacitance C3；The resistance R4, capacitor C1, capacitor C2
Parallel connection, the link node of one Node connectedness in parallel to resistance R3 and capacitance C3, simultaneously tie-point is grounded for another.
The beneficial effects of the utility model are:
1, quartz-crystal resonator outgoing carrier signal, signal modulation circuit modulate carrier signal and infrared control signal
It is issued by infrared transmitting circuit, the signal that infrared receiving circuit receives is known by amplifying with output after demodulation process to single-chip microcontroller
Not, Infrared jamming signal can be effectively obstructed, the anti-interference ability of the transmission circuit of infrared touch panel is improved, is solved infrared
Touch screen is easy the problem of being interfered by external infrared signal；
2, encapsulation volume is effectively reduced, using single side glue, stability is good, antivibration, and independent controller passes through extension
Line is put in the complete machine cavity back side, is very beneficial for EMC processing, and comprehensive cost performance is also very high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment；
Fig. 2 is the circuit theory schematic diagram of the utility model embodiment；
Fig. 3 is the circuit theory schematic diagram of signal demodulating circuit in the utility model embodiment；
Appended drawing reference: 10- flexible multi-layer circuit board, 20- quartz-crystal resonator, 30- infrared transmission module, 40- are infrared
Receiving module, 50- single-chip microcontroller, 60- display.
Specific embodiment
The embodiments of the present invention are described in detail with reference to the accompanying drawing.
Embodiment
As shown in Figure 1 and Figure 2, a kind of hollow circuit block infrared touch display, the flexible multi-layer circuit board including being in hollow
10, quartz-crystal resonator 20, infrared transmission module 30, infrared receiving module 40, single-chip microcontroller 50 and display 60；The flexibility
Corresponding infrared transmission module 30 and infrared receiving module 40 are respectively equipped on 10 1 groups of opposite sides of multilayer circuit board, it is another
Group is respectively equipped with corresponding infrared transmission module 30 and infrared receiving module 40 on opposite side；The infrared transmission module 30
Including signal modulation circuit 31 and infrared transmitting circuit 32；The infrared receiving module 40 includes infrared receiving circuit 41, signal
Amplifying circuit 42 and signal demodulating circuit 43；The signal output end connection signal modulation circuit 31 of the quartz-crystal resonator 20
Signal input part, the signal modulation circuit 31 signal output end connection infrared transmitting circuit 32 signal input part；Institute
State the signal input part of the signal output end connection signal amplifying circuit 42 of infrared receiving circuit 41, the signal amplification circuit 42
Signal output end connection signal demodulator circuit 43 signal input part, the signal demodulating circuit 43 signal output end connection
The signal input part of single-chip microcontroller 50, the signal input part of the signal output end connection display 60 of the single-chip microcontroller 50；It is described soft
Property multilayer circuit board 10 be set to the positive surrounding of display 60, the quartz-crystal resonator 20 and single-chip microcontroller 50 are set to display
60 back side.
In one of the embodiments, between the quartz-crystal resonator 20 and infrared transmission module 30, described infrared
Pass through corresponding golden finger interface or FFC between receiving module 40 and single-chip microcontroller 50, between the single-chip microcontroller 50 and display 60
Flexible cord connection.
The quartz-crystal resonator 20, single-chip microcontroller 50 and interface device are set to shape on PCB in one of the embodiments,
At independent control card.
In one of the embodiments, as shown in figure 3, the signal demodulating circuit 43 includes triode Q, resistance R1, electricity
Hinder R2, resistance R3, resistance R4, capacitor C1, capacitor C2 and capacitance C3；The base stage connection signal of the triode Q amplifies electricity
The collector of the signal output end on road 42, the triode Q is followed by DC power supply VCC by resistance R1；The hair of the triode Q
Emitter-base bandgap grading is grounded after resistance R2 all the way, and another way connects the signal input of single-chip microcontroller 50 after resistance R3 and capacitance C3
End；The resistance R4, capacitor C1, capacitor C2 are in parallel, the connection of one Node connectedness in parallel to resistance R3 and capacitance C3
Node, simultaneously tie-point is grounded for another.
Triode Q conducting needs certain threshold voltage, may filter that the clutter in signal, filtered voltage signal by
It is gradually loaded on capacitor C1 and capacitor C2, charges to capacitor C1 and capacitor C2, after repeatedly charging, capacitor C1 and electricity
The voltage held on C2 is gradually increased, and is formed by weak to strong voltage signal, which filters again by capacitance C3
After be input to single-chip microcontroller 60 and carry out A/D conversion and sampling processing.
Specific embodiment of the present utility model above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.
Claims (2)
1. a kind of hollow circuit block infrared touch display, which is characterized in that flexible multi-layer circuit board, quartz including being in hollow
Crystal resonator, infrared transmission module, infrared receiving module, single-chip microcontroller and display；One group of phase of the flexible multi-layer circuit board
Pair side on be respectively equipped with corresponding infrared transmission module and infrared receiving module, be respectively equipped with phase on another group of opposite side
Corresponding infrared transmission module and infrared receiving module；The infrared transmission module includes signal modulation circuit and infrared emission electricity
Road；The infrared receiving module includes infrared receiving circuit, signal amplification circuit and signal demodulating circuit；The quartz crystal is humorous
The signal input part of the signal output end connection signal modulation circuit of vibration device, the signal output end connection of the signal modulation circuit
The signal input part of infrared transmitting circuit；The signal of the signal output end connection signal amplifying circuit of the infrared receiving circuit is defeated
Enter end, the signal input part of the signal output end connection signal demodulator circuit of the signal amplification circuit, the signal demodulation electricity
The signal of the signal input part of the signal output end connection single-chip microcontroller on road, the signal output end connection display of the single-chip microcontroller is defeated
Enter end；The flexible multi-layer circuit board is set to the positive surrounding of display, and the quartz-crystal resonator and single-chip microcontroller are set to aobvious
Show the back side of device；Between the quartz-crystal resonator and infrared transmission module, between the infrared receiving module and single-chip microcontroller,
It is connected between the single-chip microcontroller and display by corresponding golden finger interface or FFC flexible cord；The quartz-crystal resonator, list
Piece machine and interface device are set on PCB and form independent control card.
2. hollow circuit block infrared touch display according to claim 1, which is characterized in that the signal demodulating circuit packet
Include triode Q, resistance R1, resistance R2, resistance R3, resistance R4, capacitor C1, capacitor C2 and capacitance C3；The triode Q's
The collector of the signal output end of base stage connection signal amplifying circuit, the triode Q is followed by DC power supply by resistance R1
VCC；The emitter of the triode Q is grounded after resistance R2 all the way, and another way connects after resistance R3 and capacitance C3
Connect the signal input part of single-chip microcontroller；The resistance R4, capacitor C1, capacitor C2 are in parallel, one Node connectedness in parallel to resistance R3
With the link node of capacitance C3, simultaneously tie-point is grounded for another.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821749285.9U CN209216071U (en) | 2018-10-26 | 2018-10-26 | Hollow circuit block infrared touch display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821749285.9U CN209216071U (en) | 2018-10-26 | 2018-10-26 | Hollow circuit block infrared touch display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209216071U true CN209216071U (en) | 2019-08-06 |
Family
ID=67457040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821749285.9U Active CN209216071U (en) | 2018-10-26 | 2018-10-26 | Hollow circuit block infrared touch display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209216071U (en) |
-
2018
- 2018-10-26 CN CN201821749285.9U patent/CN209216071U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209216071U (en) | Hollow circuit block infrared touch display | |
| CN205005324U (en) | Eliminate photoelectricity receiving sensor background light influences's circuit | |
| CN208903424U (en) | A kind of internet of things data acquisition module | |
| CN207424832U (en) | Stripe shape circuit band infrared touch display | |
| CN206322145U (en) | Multifunctional circuit suitable for intelligent interactive flat plate | |
| CN110442260A (en) | A kind of border structure of infrared touch panel, infrared touch panel and infrared touch device | |
| CN208656767U (en) | A kind of intelligent monitor system | |
| CN111049543A (en) | Wireless receiving circuit and wireless control device | |
| CN206658206U (en) | A kind of optical signal receiving circuit and optical signal receiving device | |
| CN207328832U (en) | Novel high-stability version unmanned plane based on STM32+FPGA flies to control | |
| CN108614465A (en) | a kind of intelligent control operation panel | |
| CN104506243B (en) | A kind of ATT control circuits of management type family expenses photoreceiver | |
| CN202677318U (en) | Wireless stylus pen | |
| CN217656628U (en) | Circuit for improving optical coupler communication rate at low cost | |
| CN201945347U (en) | Flowmeter pretreatment instrument | |
| CN207624355U (en) | A kind of touching liquid-crystal display screen | |
| CN206074038U (en) | A kind of compound sensor for sunlight tracking system | |
| CN216956915U (en) | Processing device of infrared photocurrent, infrared touch screen and electronic equipment | |
| CN206313545U (en) | A kind of electric power system of active electromagnetism stylus | |
| CN203386186U (en) | Infrared signal acquisition device and infrared touch screen | |
| CN209560980U (en) | Communication topology circuit and display device | |
| CN104506245B (en) | A kind of ATT control methods of management type family expenses photoreceiver | |
| CN208572343U (en) | A kind of electronic equipment | |
| CN204305030U (en) | A kind of AGC control circuit of management type family expenses photoreceiver | |
| CN206362950U (en) | A kind of new type reflection infrared sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: 201210 Shanghai Pudong New Area, China (Shanghai) Free Trade Pilot Area, No. 778 Innovation West Road Patentee after: Shanghai Xinhui Electronics Co.,Ltd. Address before: 201718 Shanghai city Qingpu District Jinze Jinxi Road No. 119, room 603 -A1 Patentee before: SHANGHAI CHIPSTAR ELECTRONIC Co.,Ltd. |