CN107145263A - Using the touch-screen system of a wordline shape laser light source - Google Patents
Using the touch-screen system of a wordline shape laser light source Download PDFInfo
- Publication number
- CN107145263A CN107145263A CN201710188049.8A CN201710188049A CN107145263A CN 107145263 A CN107145263 A CN 107145263A CN 201710188049 A CN201710188049 A CN 201710188049A CN 107145263 A CN107145263 A CN 107145263A
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- China
- Prior art keywords
- light
- touch
- optical signal
- touch pad
- sensitive element
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0428—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by sensing at the edges of the touch surface the interruption of optical paths, e.g. an illumination plane, parallel to the touch surface which may be virtual
Abstract
Touch-screen system using a wordline shape laser light source is related to a kind of touch-screen.Including a touch pad, a microprocessor system, microprocessor system connects the touch location detection module of a detected touch point position, touch location detection module includes optical signal and receives head and signal processing module, optical signal receives head and is provided with light-sensitive element, light-sensitive element connection signal processing module；Optical signal, which receives head, includes at least four light-filtering channels；Light-filtering channels one end is provided with a light inlet, and the other end of light-filtering channels is provided with light-sensitive element, and the conduit wall of light-filtering channels is the conduit wall with interception；Optical signal receives head and is placed in front of touch pad, and optical signal receives the light inlet of at least four light-filtering channels of head towards touch pad, forms corresponding optical signal receiving area on a touchpad.Due to using above-mentioned technical proposal, the present invention is not only simple in structure, with low cost, and can use less device.
Description
The applying date of the original application of the divisional application is：On June 7th, 2011, Application No.：2011101503644, title
For：Optical signal is set to receive the touch-screen system of head in front of touch pad.
Technical field
The present invention relates to electronic equipment, more particularly to a kind of touch-screen system.
Background technology
Growing with multimedia technology, touch-screen system is got over most convenient, simple, natural input medium
To be more widely applied, such as telecommunication bureau, bank, the information inquiry in city street corner, Industry Control, multimedia teaching.Utilize this
The technology of kind, as long as the picture and text that user is lightly touched on display screen with finger or other touch parts can be achieved with operation, so that
Man-machine interaction is more directly perceived, greatly facilitates user.
Existing touch-screen system has diversified forms, and wherein Infrared touch screen systems are relative to other touch-screen systems, tool
Have not by electric current, voltage and electrostatic interference, suitably the advantages of some rugged environment conditions.Almost with overwhelming advantage, by
Gradually capture the market of other touch-screen systems.But Infrared touch screen systems have influence on due to adding framework in ordinary screen
The compactedness of structure, application environment is limited.And Infrared touch screen systems cost is still higher, it is not easy to be applied to 30 cun
Touch-screen system above.
The content of the invention
It is an object of the invention to provide the touch-screen system using a wordline shape laser light source, to solve above-mentioned technology
Problem.
Technical problem solved by the invention can be realized using following technical scheme：
It is described using the touch-screen system of a wordline shape laser light source, including a touch pad, a microprocessor system
Microprocessor system connects the touch location detection module of a detected touch point position, it is characterised in that the touch location
Detection module includes optical signal and receives head and signal processing module, and the optical signal receives head and is provided with light-sensitive element, the light
Quick element connects the signal processing module；
The optical signal, which receives head, includes at least four light-filtering channels；Described light-filtering channels one end is provided with a light inlet, institute
The other end for stating light-filtering channels is provided with the light-sensitive element, and the conduit wall of the light-filtering channels is the passage with interception
Wall；
The optical signal receives head and is placed in front of touch pad, and the optical signal receives entering at least four light-filtering channels of head
Optical port forms corresponding optical signal receiving area towards the touch pad on the touch pad.
The optical signal receives head and is placed in front of touch pad, refer to the optical signal receive head be placed in touch pad it is positive before
Side, or the optical signal receive head and are placed in the front for touching back；
One wordline shape laser is also included using the touch-screen system of a wordline shape laser light source, the wordline shape swashs
Light device is arranged on the side of the touch pad, and the wordline shape laser forms one layer in the range of the touch of the touch pad
The laser-emitting face parallel with the touch pad；When touching part touch touch pad, laser-emitting face is blocked, light contact is formed；
When forming the light contact that one can be recognized by the touch location detection module on the touch pad, the light is touched
The optical signal sent at point is received by least one described light-sensitive element in the touch location detection module, through signal transacting
Touch signal is produced after resume module, and touch signal is passed into the microprocessor system；The microprocessor system
System is considered as the light corresponding to the light inlet of light-filtering channels where the smooth contact is located at the light-sensitive element for receiving the optical signal
In signal receiving area, and optical signal receiving area is associated with the touch pad or at touch pad on the picture of display.
The light-sensitive element receives the light inlet towards the light in region, so that one is formed in front of the light inlet has
The optical signal receiving area of effect.Light-sensitive element in the light-filtering channels receives the optical signal by the light inlet and connect
Receive the optical signal in region.Optical signal on touch pad beyond the optical signal receiving area is seldom connect by the light-sensitive element
Receive, or even do not received completely by the light-sensitive element, so that beyond the light-sensitive element is to the optical signal receiving area
Optical signal is not responding to.
Above-mentioned design is particularly suitable for use in the electrical equipment such as control television set, air-conditioning.Above-mentioned design is touched using light-sensitive element scanning light
Point, the remarkable advantage such as make touch location detection module have simple in construction, with low cost, installation and debugging simple.
The light-sensitive element can use infrared receiving terminal.To simplify the signal of system and reduction touch location detection module
Treating capacity.
Width inside the light-filtering channels is：The light inlet width at one end be more than where the light-sensitive element
The width of one end, and width is gradually reduced at one end to the light-sensitive element at one end from the light inlet.
Light-filtering channels described at least four are arranged in order at least two rows, and the light-sensitive element institute is adjacent at one end, described
Light inlet institute is adjacent at one end.Above-mentioned design makes optical signal receiving area towards unanimously.
Wherein, light-filtering channels described at least four are arranged in order in a row, and light-sensitive element institute is adjacent at one end, described
Light inlet institute is adjacent at one end.Above-mentioned design makes optical signal receiving area towards unanimously.
The light inlet is provided with optical filter, to filter out irrelevant optical signal.The optical signal receives head at least
Four light inlets use same optical filter.
The conduit wall of the light-filtering channels is provided with reflector layer, to strengthen light.To ensure that light-filtering channels are corresponding
Light-sensitive element can receive the optical signal sent at the corresponding optical signal region of light-filtering channels.
The conduit wall of the light-filtering channels is provided with dark coating, to absorb light.To avoid light-filtering channels correspondence
Light-sensitive element receive the optical signal sent at the corresponding optical signal region of other light-filtering channels.
When exist in the light-filtering channels of same row a plurality of light-sensitive elements receive at the smooth contact reflect light
During line, be considered as light contact positioned at a plurality of light-sensitive element two ends two light-sensitive elements where optical signal region it
Between middle part, the signal processing module produces touch signal, and touch signal is passed into the microprocessor system, institute
State microprocessor system the affiliated light contact position of judgement is associated with the touch pad.A plurality of light-sensitive elements are
Refer to more than two light-sensitive elements.
Can be specifically：When exist in the light-filtering channels of same row light-sensitive element described in even number receive the light touch
During the light reflected at point, it is considered as middle part of the light contact positioned at the optical signal region where middle two light-sensitive elements, institute
State signal processing module and produce touch signal, and touch signal is passed into the microprocessor system, the miniature processing
Device system will be associated with the touch pad in the middle part of the optical signal receiving area where middle two light-sensitive elements.
When exist in the light-filtering channels of same row light-sensitive element described in odd number receive at the smooth contact reflect light
During line, it is considered as the optical signal region that light contact is located at where middle light-sensitive element, the signal processing module, which is produced, touches letter
Number, and touch signal is passed into the microprocessor system, the microprocessor system is by positioned at middle photosensitive member
Optical signal region where part is associated with the touch pad.
Touch part and produce light beam, the light beam forms a light contact on the touch pad.
The touch part can use remote touch pen, and remote touch pen uses laser, be touched by laser described
Light contact is formed on plate.Remote touch pen described in remote touch pen includes laser, power supply, also with signal generating module, electricity
Source connects signal generating module, signal generating module connecting laser, and signal generating module produces the electric signal of vibration, and drives
Laser sends the laser signal of the flicker corresponding with electric signal.Remote touch pen is by remote control light contact, to using
The touch-screen system of one wordline shape laser light source realizes corresponding remote operation.Remote touch pen is provided with switch.
The touch part can use short range felt pen, and short range felt pen includes a light-emitting component, touch part and touching institute
The light-emitting component of triggering touch part lights when stating touch pad, forms light contact on a touchpad.The short range touch pad includes pen
Shell, power supply, switch and light-emitting component, the luminous situation of switch control light-emitting component；The touch end of switch and short range felt pen connects
Connect, touch end trigger switch when touching touch pad, light-emitting component lights, and forms light contact on a touchpad.Short range felt pen
Lighted when being contacted with touch pad, form a smooth contact on a touchpad, light contact is moved with the movement of short range felt pen, from
And touch operation of the short range felt pen to the touch-screen system using a wordline shape laser light source is realized by light contact.
Also include a power supply, the power supply includes a battery, and the battery connects a photocell, described
Photronic smooth surface is towards touch pad, and the luminous energy received on touch pad realizes charging.
The microprocessor system connects a remote controller module, and the microprocessor system is sent out by remote controller module
The number of delivering letters gives the remote control end of controlled plant.
The remote controller module is used to be set in front of IR remote controller module, the infrared emission head of the IR remote controller module
There is an astigmatism plate, optical signal is reduced blind area to transmitting around.
The light inlet of light-filtering channels described at least four is in strip, and the light inlet of wherein at least two strip is touched described
The length direction of the optical signal receiving area formed in template, which exists, to interlock.
The optical signal that the smooth contact is sent has at least the two of optical signal receiving area staggeredly by length direction simultaneously
When light-sensitive element in the individual light-filtering channels is received and identified, the microprocessor system receives signal processing module processing
A light-sensitive element data, obtain light contact positioned at an optical signal region, the microprocessor system receives signal transacting
Another light-sensitive element data of resume module, obtain light contact positioned at another optical signal region, the microprocessor system
It is considered as light contact positioned at an optical signal region and another optical signal region crossover location, the microprocessor system will be located at one
Optical signal region and the optical signal region of another optical signal region crossover location are associated with touch pad or shown at touch pad
Picture on.By increasing the quantity of staggered place, on the premise of light-sensitive element quantity is not increased, touch essence can be effectively improved
Degree.
The width for the optical signal receiving area that the light inlet of wherein at least two strip is formed on the touch pad
There is overlapping region in direction.
There are at least two optical signals in the region that partly overlaps by width simultaneously in the optical signal that the smooth contact is sent
When light-sensitive element described in receiving area corresponding at least two in light-filtering channels is received and identified, the microprocessor system
It is considered as the smooth contact positioned at the overlapping region of the width of optical signal receiving area described at least two on the touch pad.
By the setting of the overlapping region to width, and the identification to the light contact in overlapping region, can be effective
Improve and touch precision.
Two there is overlapping region in width optical signal receiving area, with two other width exist weight
The optical signal receiving area in folded region, exists in length direction and interlocks；The optical signal of the smooth contact is simultaneously by above-mentioned two light
When light-sensitive element corresponding to signal receiving area is received and identified, the microprocessor system is considered as the smooth contact and is located at
The intersection of two overlapping regions.
By increasing above-mentioned algorithm, touch precision can be further effectively improved.
Head is received including optical signal described at least two, optical signal described at least two receives head and is placed in front of touch pad；
The light inlet that one optical signal receives at least two light-filtering channels of head is strip, and length direction is arranged in parallel；Another optical signal
The light inlet for receiving at least two light-filtering channels of head is strip, and length direction is arranged in parallel；
One optical signal receives at least two optical signal receiving areas that head is formed on the touch pad, with another optical signal
At least two optical signal receiving areas that reception head is formed on the touch pad exist in the longitudinal direction to interlock.
Simplify the structure that the single optical signal receives head by setting two optical signals to receive head.And can be fed
One step improves systematic function and provides hardware foundation.
When touch pad is larger, the wordline shape laser could be arranged to multiple, and multiple wordline shape lasers can
To be arranged on the side of touch pad, it can also be arranged as required to, as long as one layer of laser of multiple wordline shape lasers formation
Exit facet covers the touch scope of touch pad.The signal processing module is by the way of Time share scanning, and timesharing receives two
The individual optical signal receives the receive information that hair is sent.Above-mentioned design can reduce the number of a wordline shape laser, and then subtract
Few cost.
Also include a shell, the shell is using a shell with cartoon animals moulding；The shell is provided with left and right
Two light-transmitting openings of arrangement；
It is each at two light-transmitting openings to set optical signal described in one to receive head；The light-transmitting opening can be cartoon animals moulding
Eye, be positioned over room increase interesting.Two optical signals receive the length of the light inlet of the light-filtering channels arranged in head
Degree direction is inconsistent, to cause the optical signal region for mapping formation on the touch pad to be in rectangular arrangement.
The middle part of two light-transmitting openings is provided with a correcting laser system, the laser emission port of correcting laser system
Towards the touch area on touch pad.The laser is cross laser device or point-like laser device.
The laser is provided with a laser switch, and the switch is a normal open switch.The correcting laser system
The center for causing two optical signals to receive head for calibrating is directed at the center of the touch-screen system.
Two light-transmitting openings symmetrical above and below can be arranged on the shell of cartoon animals moulding, described in symmetrical above and below two
It is each in light-transmitting opening to set an optical signal to receive head.
The microprocessor system uses the microprocessor system of television set top box.Using adopting that the present invention is constituted
Signal is carried out with the touch-screen system of a wordline shape laser light source with television set top box to be connected, and it is common with television set top box
With microprocessor system, the touch operation to television set is realized.
The microprocessor system uses the microprocessor system of computer.The word of use one constituted using the present invention
The touch-screen system of linear laser device light source and computer carry out signal and are connected, and with computer utility microprocessor system,
Realize the touch operation to computer.
The microprocessor system connects a wireless local area network communications module, wirelessly needs to touch with the external world
The equipment for touching operation carries out signal connection, realizes touch operation function.
The microprocessor system connects a bluetooth communication, needs touch with the external world by way of Bluetooth transmission
The bluetooth equipment of operation carries out signal connection, realizes touch operation function.
The microprocessor system connects an infrared communication module, by way of Infrared Transmission or infrared remote control and outer
Boundary needs the infrared equipment of touch operation to carry out signal connection, realizes touch operation function.
Beneficial effect：Due to using above-mentioned technical proposal, the present invention is not only simple in structure, with low cost, and can use
Less device, realizes the function that high accuracy is touched.
Brief description of the drawings
Fig. 1 is circuit structure diagram of the invention；
Fig. 2 is use state schematic diagram of the present invention；
Fig. 3 receives a kind of structural representation of head for the optical signal of the present invention；
Fig. 4 receives another structural representation of head for the optical signal of the present invention；
Fig. 5 is that the optical signal shown in Fig. 4 receives the schematic diagram that head is associated with touch pad optical signal receiving area；
Fig. 6 receives header structure schematic diagram in the optical signal of strip respectively for the light inlet of at least four light-filtering channels；
Fig. 7 is that the optical signal shown in Fig. 6 receives the schematic diagram that head is associated with touch pad optical signal receiving area；
Fig. 8 is the structural representation that head is received using two optical signals.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Conjunction, which is specifically illustrating, is expanded on further the present invention.
Reference picture 1, Fig. 2, using the touch-screen system of a wordline shape laser light source, including a touch pad 2, a miniature place
Manage device system 11.Microprocessor system 11 connects the touch location detection module 12 of a detected touch point position, touch location
Detection module 12 includes optical signal and receives first 13 and signal processing module 14.Optical signal receives first 13 and is provided with light-sensitive element 15,
Light-sensitive element 15 connects signal processing module 14.Optical signal receives first 13 and is placed in the front of touch pad 2.In the feelings of the printing opacity of touch pad 2
Under condition, optical signal, which receives first 13, can also be placed in the rear of touch pad 2.Optical signal receives first 13 rears for being placed in touch pad 2
Mode is particularly suitable for use in the display shown in rear-projection mode.
One power supply is also included using the touch-screen system of a wordline shape laser light source.Power supply includes an electric power storage
Pond, battery connects a photocell, and photronic smooth surface is towards touch pad 2.Photocell receives the light that the direction of touch pad 2 is sent
Line, and electric energy is converted into, electric energy is provided for system work, or be battery charging.There is provided by photocell for whole system
Part electric energy, or whole electric energy.
It can use as follows using the communication mode between the touch-screen system and controlled plant of a wordline shape laser light source
One or more in mode：
(1) microprocessor system 11 connects a wireless local area network communications module, wirelessly with external world's needs
The equipment of touch operation carries out signal connection, realizes touch operation function.
(2) microprocessor system 11 connects a bluetooth communication, needs to touch with extraneous by way of Bluetooth transmission
The bluetooth equipment for touching operation carries out signal connection, realizes touch operation function.
(3) microprocessor system 11 connect an infrared communication module, by way of Infrared Transmission or infrared remote control with
The external world needs the infrared equipment of touch operation to carry out signal connection, realizes touch operation function or distant control function.
(4) microprocessor system 11 connects a remote controller module, and microprocessor system 11 is sent out by remote controller module
The number of delivering letters gives the remote control end of controlled plant.Remote controller module uses IR remote controller module, IR remote controller module
An astigmatism plate is provided with front of infrared emission head, optical signal is reduced blind area to transmitting around.It is particularly suitable for use in TV remote-control, sky
Adjust remote control etc..
Microprocessor system 11 can use following form：
(1) directly using the microprocessor system 11 in controlled plant, such as using the miniature processing of television set top box
Device system；Using the microprocessor system of computer.Simplify structure by sharing CPU, reduce cost.
(2) independent microprocessor system 11 is used, microprocessor system 11 is preferred to use SCM system, ARM
The small-sized microprocessor system such as system.
Reference picture 3, optical signal, which receives first 13, includes at least four light-filtering channels 131.The one end of light-filtering channels 131 enters provided with one
Optical port 132, the other end of light-filtering channels 131 is provided with light-sensitive element 15, and the conduit wall of light-filtering channels 131 is with interception
Conduit wall.Optical signal receives the light inlet 132 of first 13 at least four light-filtering channels 131 towards touch pad 2.Light-sensitive element 15 can
With using photodiode, phototriode or infrared receiving terminal.In specific design can preferred infrared receiving terminal, it is infrared to connect
Receipts head is integrated in an element for infrared receiving circuit and is made.General internal circuit include infrared monitoring diode, amplifier,
The secondary device of limit, bandpass filter, integrating circuit, comparator etc..Infrared receiving terminal can be considered as at photodiode and signal
The even whole circuits of partial circuit for managing module 14 are integrated.Therefore system can be simplified using infrared receiving terminal, reduced
The signal transacting amount of touch location detection module 12 omits signal processing module 14.
Light-sensitive element 15 receives light inlet 132 towards the light in region, so that the formation one of the front of light inlet 132 is effective
Optical signal receiving area 21.Light-sensitive element 15 in light-filtering channels 131 is received in optical signal receiving area 21 by light inlet 132
Optical signal.Optical signal beyond the optical signal receiving area 21 of touch pad 2, because light-filtering channels 131 have interception
The interception of conduit wall, is seldom received by light-sensitive element 15, or even is not received completely by light-sensitive element 15, so that photosensitive member
Part 15 is not responding to the optical signal beyond optical signal receiving area 21.
When forming the light contact 3 that one can be recognized by touch location detection module 12 on touch pad 2, at light contact 3
The optical signal sent is received by least one light-sensitive element 15 in touch location detection module 12, at signal processing module 14
Touch signal is produced after reason, and touch signal is passed into microprocessor system 11.Microprocessor system 11 is considered as light and touched
Point 3 is located at the optical signal reception area corresponding to the light inlet 132 for the place light-filtering channels 131 of light-sensitive element 15 for receiving optical signal
In domain 21, and optical signal receiving area is associated with touch pad 2 or at touch pad 2 on the picture of display.Above-mentioned design is special
The electrical equipment such as television set, air-conditioning Shi Yongyu not controlled.Above-mentioned design examines touch location using the scanning light of light-sensitive element 15 contact 3
The remarkable advantage such as survey module 12 and have simple in construction, with low cost, installation and debugging simple.When screen is larger, it can use many
Individual optical signal receives first 13.
Specific design for light-filtering channels 131 is as follows：
In specific design, the conduit wall of light-filtering channels 131 can set reflector layer, to strengthen light.To ensure to filter
The corresponding light-sensitive element 15 of passage 131 can receive the optical signal sent at the corresponding optical signal region of light-filtering channels 131.This sets
Meter is applied to the weaker situation of the light of light contact 3.
The conduit wall of light-filtering channels 131 can also set dark coating or dark frosted coating, to absorb light, so as to
The corresponding light-sensitive element 15 of light-filtering channels 131 is avoided to receive the light letter sent at the corresponding optical signal region of other light-filtering channels
Number.This design is applied to the stronger situation of the light of light contact 3.
Width inside reference picture 3, light-filtering channels 131 is：Light inlet 132 width at one end be more than light-sensitive element 15
Width at one end, and width is gradually reduced at one end to light-sensitive element 15 at one end from the institute of light inlet 132.It is preferred that entering light
Mouth 132 is arc.On the premise of light inlet 132 is arc, the further preferred section of light-filtering channels 131 is sector.
The mode for producing light contact 3 can be the following two kinds：
First, produced using luminous touch part.
Light beam is produced by touching part, light beam forms a light contact on touch pad 2.
Remote touch pen can be used by touching part, and remote touch pen uses laser, formed by laser on touch pad 2
Light contact.Remote touch pen includes laser, power supply, also with signal generating module, power supply connection signal generating module, signal
Generation module connecting laser, signal generating module produces the electric signal of vibration, and it is relative with electric signal to drive laser to send
The laser signal for the flicker answered.Remote touch pen is by remote control light contact, to being touched using a wordline shape laser light source
Touch screen system and realize corresponding remote operation.Remote touch pen is provided with switch.
Short range felt pen can be used by touching part, and short range felt pen includes a light-emitting component, touched part and touched touch pad 2
When triggering touch the light-emitting component of part and light, light contact is formed on touch pad 2.Short range touch pad 2 includes a shell, power supply, opened
Close and light-emitting component, the luminous situation of switch control light-emitting component.Switch is connected with the touch end of short range felt pen, is touched end and is existed
Trigger switch when touching touch pad 2, light-emitting component is lighted, and light contact is formed on touch pad 2.Short range felt pen with touch pad
It is luminous during 2 contact, a smooth contact is formed on touch pad 2, light contact is moved with the movement of short range felt pen, so as to pass through light
Realize touch operation of the short range felt pen to the touch-screen system using a wordline shape laser light source in contact.
The 2nd, laser is set in front of touch pad
Reference picture 5, also includes a wordline shape laser 4 using the touch-screen system of a wordline shape laser light source.One word
Linear laser device 4 is arranged on the corner of touch pad 2.One wordline shape laser 4 formed in the range of the touch of touch pad 2 one layer with
The parallel laser-emitting face of touch pad 2.When touching part touch touch pad 2, laser-emitting face is blocked, light contact 3 is formed.When tactile
When template 2 is larger, a wordline shape laser 4 could be arranged to multiple, and multiple wordline shape lasers 4 can be arranged on touch pad
2 side, can also be arranged as required to.As long as one layer of laser-emitting face covering of multiple formation of wordline shape laser 4 is touched
The touch scope of template 2.
Specific embodiment 1：
Reference picture 4, at least four light-filtering channels 131 are arranged in order at least two rows, and the institute of light-sensitive element 15 is adjacent at one end,
The one end of light inlet 132 is adjacent, makes optical signal receiving area towards unanimously.
Wherein preferably, at least four light-filtering channels 131 are arranged in order in a row, and the institute of light-sensitive element 15 is adjacent at one end, enters
The institute of optical port 132 is adjacent at one end.Light inlet 132 is provided with optical filter, to filter out irrelevant optical signal.Optical signal receives head
13 at least four light inlets 132 use same optical filter, to simplify structure.
Reference picture 5, two-by-two the optical signal receiving area 21 corresponding to adjacent light inlet 132 there is lap, it is overlapping
Part is as shown in dash area in figure.
When light contact 3 is located at lap (dash area), has at least two light-sensitive elements 15 and receive light contact 3
Place's reflection or the light of scattering.Such as three, four, five even more light-sensitive elements 15 receive light.
Reflection or scattering at light contact 3 are received when there is even number light-sensitive element 15 in the light-filtering channels 131 of same row
Light when, be considered as the middle part in the optical signal region that light contact 3 is located at where middle two light-sensitive elements 15, signal processing module
14 produce touch signal, and touch signal is passed into microprocessor system 11, and microprocessor system 11 will be located at centre
It is associated with touch pad 2, or is associated with touch pad 2 aobvious in the middle part of optical signal receiving area where two light-sensitive elements 15
On the picture shown.
When exist in the light-filtering channels 131 of same row odd number light-sensitive element 15 receive at light contact 3 reflect light
When, it is considered as light contact 3 positioned at the optical signal region corresponding to middle light-sensitive element 15.Signal processing module 14, which is produced, touches letter
Number, and touch signal is passed into microprocessor system 11.Microprocessor system 11 is by positioned at middle light-sensitive element 15
Corresponding optical signal region is associated with touch pad 2, or is associated with the picture shown on touch pad 2.
Specific embodiment 2：
Reference picture 6, the light inlet of at least four light-filtering channels 131 is in strip respectively, includes the He of light inlet 1321 of longitudinal direction
Horizontal light inlet 1322.
Reference picture 7, longitudinal light inlet 1321, and the optical signal that horizontal light inlet 1322 is formed on touch pad 2 connect
The length direction in region 21 is received in the presence of interlocking, staggered place is with shadow representation.
To there is optical signal receiving area 211 staggeredly in the optical signal that light contact 3 is sent corresponding extremely by length direction simultaneously
When light-sensitive element 15 in few two light-filtering channels 131 is received and identified, microprocessor system 11 receives signal processing module
One light-sensitive element data of 14 processing, obtain light contact 3 positioned at the corresponding optical signal region of a light-sensitive element, microprocessor
System 11 receives another light-sensitive element data that signal processing module 14 is handled, and obtains light contact positioned at another light-sensitive element pair
The optical signal region answered.Microprocessor system 11 is considered as light contact 3 and handed over positioned at an optical signal region with another optical signal region
Vent puts 211.Microprocessor system 11 is by positioned at the optical signal in an optical signal region and another optical signal region crossover location
Region is associated with touch pad 2 or at touch pad 2 on the picture of display.By increasing the quantity of staggered place, do not increasing light
On the premise of quick number of elements, touch precision can be effectively improved.
With further reference to Fig. 7, the light inlet 1321 or light inlet 1322 of wherein at least two strip are formed on touch pad 2
The width of optical signal receiving area 21 there is overlapping region, such as overlapping region 212 of multiple light inlets 1322.
There are at least two optical signals in the region 212 that partly overlaps by width simultaneously in the optical signal that light contact 3 is sent
When light-sensitive element 15 in corresponding at least two light-filtering channels 131 in receiving area is received and identified.Microprocessor system 11
It is considered as light contact 3 positioned at the overlapping region 212 of the width of at least two optical signal receiving areas on touch pad 2.By right
The setting of the overlapping region 212 of width, and the identification to the light contact 3 in overlapping region 212, can effectively improve touch
Precision.
Two there is overlapping region 212 in width optical signal receiving area, deposited with two other in width
Optical signal receiving area in overlapping region 213, exists in length direction and interlocks.The optical signal of light contact 3 is simultaneously by above-mentioned two
When light-sensitive element 15 corresponding to individual optical signal receiving area is received and identified, microprocessor system 11 is considered as light contact 3
In overlapping region 212, the intersection of overlapping region 213.By increasing above-mentioned algorithm, touch essence can be further effectively improved
Degree.
Reference picture 8, further for the structure for simplifying single optical signal reception head, it is possible to further to improve systematicness
Hardware foundation can be provided.Former optical signal reception first 13 is divided into two, i.e. optical signal and receives head 13a, optical signal receives head 13b.
The light inlet that optical signal receives head 13a at least two light-filtering channels is strip, and length direction is arranged in parallel.Light
The light inlet that signal receives head 13b at least two light-filtering channels is strip, and length direction is arranged in parallel.
Reference picture 7, optical signal receives at least two optical signal receiving areas that head 13a is formed on touch pad 2, believes with light
Number receive at least two optical signal receiving areas being formed on touch pad 2 of head 13b and exist in the longitudinal direction and interlock.It is similar to
Fig. 6 is had to two groups of light-filtering channels 131 of light inlet 1321, light inlet 1322, two relatively independent light letters are disposed on
Number receive head on.
Further, a shell, microprocessor system are also included using the touch-screen system of a wordline shape laser light source
11st, touch location detection module 12, battery etc. are arranged in shell.Shell is using a shell with cartoon animals moulding.
Two light-transmitting openings of the shell provided with left and right arrangement.Set optical signal to receive head 13a, optical signal at two light-transmitting openings respectively to receive
Head 13b.Light-transmitting opening can be the eye of cartoon animals moulding, be positioned over room increase interesting.Optical signal receives head 13a, light
The length direction that signal receives the light inlet of the light-filtering channels arranged in head 13b is inconsistent.Length direction can be intersecting, also may be used
To be further arranged to be mutually perpendicular to.To cause the optical signal region for mapping formation on touch pad 2 to be in rectangular arrangement.Cartoon
It can also be arranged to respectively set in two light-transmitting openings symmetrical above and below, two light-transmitting openings symmetrical above and below on animal-shaped shell
One optical signal receives head.
The middle part of two light-transmitting openings, i.e. optical signal receive between head 13a, optical signal receive head 13b and calibrate laser provided with one
Device system, the emission port of laser 5 of correcting laser system is towards the touch area on touch pad 2.Laser 5 is cross laser
Device or point-like laser device.Laser 5 is provided with a laser switch, switchs as a normal open switch.Correcting laser system is used for school
Standard causes the center that two optical signals receive head is tried one's best to be directed at the center of touch-screen system 2.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. it is described micro- using the touch-screen system of a wordline shape laser light source, including a touch pad, a microprocessor system
Type processor system connects the touch location detection module of a detected touch point position, it is characterised in that the touch location inspection
Surveying module includes optical signal reception head and signal processing module, and the optical signal receives head and is provided with light-sensitive element, described photosensitive
Element connects the signal processing module；
The optical signal, which receives head, includes at least four light-filtering channels；Described light-filtering channels one end is provided with a light inlet, the filter
The other end of optical channel is provided with the light-sensitive element, and the conduit wall of the light-filtering channels is the conduit wall with interception；
The optical signal receives head and is placed in front of touch pad, and the optical signal receives the light inlet of at least four light-filtering channels of head
Towards the touch pad, corresponding optical signal receiving area is formed on the touch pad.
The optical signal receives head and is placed in front of touch pad, refers to that the optical signal receives head and is placed in the positive front of touch pad,
Or the optical signal receives head and is placed in the front for touching back；
One wordline shape laser, the wordline shape laser are also included using the touch-screen system of a wordline shape laser light source
The side of the touch pad is arranged on, the wordline shape laser forms one layer and institute in the range of the touch of the touch pad
State the parallel laser-emitting face of touch pad；When touching part touch touch pad, laser-emitting face is blocked, light contact is formed；
When forming the light contact that one can be recognized by the touch location detection module on the touch pad, at the smooth contact
The optical signal sent is received by least one described light-sensitive element in the touch location detection module, through signal processing module
Touch signal is produced after processing, and touch signal is passed into the microprocessor system；The microprocessor system is regarded
Optical signal where being located at the light-sensitive element for receiving the optical signal for the smooth contact corresponding to the light inlet of light-filtering channels
In receiving area, and optical signal receiving area is associated with the touch pad or at touch pad on the picture of display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710188049.8A CN107145263B (en) | 2011-06-07 | 2011-06-07 | Touch screen system using linear laser light source |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110150364.4A CN102819355B (en) | 2011-06-07 | 2011-06-07 | Touch pad front sets the touch-screen system that optical signal receives head |
| CN201710188049.8A CN107145263B (en) | 2011-06-07 | 2011-06-07 | Touch screen system using linear laser light source |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110150364.4A Division CN102819355B (en) | 2011-06-07 | 2011-06-07 | Touch pad front sets the touch-screen system that optical signal receives head |
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| CN107145263A true CN107145263A (en) | 2017-09-08 |
| CN107145263B CN107145263B (en) | 2020-02-07 |
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| CN201110150364.4A Active CN102819355B (en) | 2011-06-07 | 2011-06-07 | Touch pad front sets the touch-screen system that optical signal receives head |
| CN201710188049.8A Active CN107145263B (en) | 2011-06-07 | 2011-06-07 | Touch screen system using linear laser light source |
| CN201710190073.5A Active CN107132953B (en) | 2011-06-07 | 2011-06-07 | Touch screen with optical signal receiving head arranged in front of touch pad |
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| CN201110150364.4A Active CN102819355B (en) | 2011-06-07 | 2011-06-07 | Touch pad front sets the touch-screen system that optical signal receives head |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710190073.5A Active CN107132953B (en) | 2011-06-07 | 2011-06-07 | Touch screen with optical signal receiving head arranged in front of touch pad |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030020A (en) * | 2019-12-24 | 2021-06-25 | 北汽福田汽车股份有限公司 | Gas detection device in oil supply pipeline and vehicle with same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110941369B (en) * | 2019-12-11 | 2024-01-16 | 业成科技（成都）有限公司 | Photosensitive module and sensing device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107132953A (en) | 2017-09-05 |
| CN102819355B (en) | 2017-05-31 |
| CN107145263B (en) | 2020-02-07 |
| CN102819355A (en) | 2012-12-12 |
| CN107132953B (en) | 2021-03-26 |
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