CN206574067U - A kind of contactless key system based on laser scanning - Google Patents
A kind of contactless key system based on laser scanning Download PDFInfo
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- CN206574067U CN206574067U CN201720305459.1U CN201720305459U CN206574067U CN 206574067 U CN206574067 U CN 206574067U CN 201720305459 U CN201720305459 U CN 201720305459U CN 206574067 U CN206574067 U CN 206574067U
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- rotating mechanism
- laser
- laser emission
- controller
- key system
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Abstract
The utility model belongs to data processing equipment technical field, discloses a kind of contactless key system based on laser scanning, including：To being positioned at the Laser emission receiver that object is scanned on the arbitrary plane of picture and word exhibition information；The rotating mechanism being adjusted to Laser emission receiver scanning angle；Receive the information of Laser emission receiver scanning and analyzed and handled, adjust the controller of rotating mechanism running status；Location information and the display device of controller correlation analysis result that display Laser emission receiver is detected.The utility model is on the basis of relevant experimental data is obtained, keyboard making and the analysis of location algorithm are carried out, complete after keyboard model and numerical value read work, calculated value and actual reading value have been carried out comparing analysis, confirmed the precision and reliability of system in terms of theory and practice two；Taxi boarding station map demo function is finally completed, while also extending other functions of the keyboard.
Description
Technical field
The utility model belongs to data processing equipment technical field, more particularly to a kind of based on the contactless of laser scanning
Key system.
Background technology
At present, a display device for being used to recruit taxi is designed, a city map is placed at taxi boarding station,
Want where click on relevant position in map, the ground title is shown on LED display, or be directly connected to and drip drop and call a taxi and be
System, accordingly even when the crowd without smart mobile phone or without data traffic can also easily recruit taxi, while may be used also
Easily to realize taxi sharing, alleviate incity traffic jam issue.The design of map keyboard is found in the design process
It is key issue.
Because map keyboard is mounted in outdoor, it can be influenceed by adverse environments such as wind and weather Exposures to Sunlight, simultaneously because
The various complex situations of people when in use：For example, have water or greasy dirt on finger, or some people can use mobile phone, key, umbrella
The belongings such as point click on map, find no matter using touch-screen or mechanically, the contact such as capacitance key
All there is easy dirt in button, and use the contactless buttons such as light curtain also to exist precision is low, complicated, exploitation is difficult
The problems such as spending big.
In summary, the problem of prior art is present be：
Realize the keypad function of some specific occasions frequently with touch-screen indoors at present, although its precision is higher, aobvious
Show directly perceived, informative but program cost height, construction cycle length, by contacting surface accumulated small, easily defaced so as to influence to use
Performance；In outdoor conventional machinery formula button such as gate control system, but sampling site precision is low；More also using infrared or laser etc.
The light veil type keyboard of making, its luminous point and daylighting point are more, and complicated and accuracy of detection is not also high.
The content of the invention
The problem of existing for prior art, the utility model provides a kind of contactless button based on laser scanning
System.
The utility model is achieved in that
A kind of contactless key system based on laser scanning, including：It is bolted on based on laser scanning
The controller in the housing rear end face of contactless key system；
It is attached to the picture of the housing upper surface and the arbitrary plane of word exhibition information；
With the Laser emission receiver of controller wired connection；
With the rotating mechanism of controller wired connection；
With the display device of controller wired connection；
The Laser emission receiver is bolted on rotating mechanism mounting；The rotating mechanism mounting passes through spiral shell
Bolt is fixed on rotating mechanism；The rotating mechanism is bolted on the top of housing；The display device passes through bolt
It is fixed on the top of the housing；
The Laser emission receiver is two or three；Rotating mechanism is one to three.
Further, Laser emission receiver includes with rotating mechanism according to functional requirement concrete configuration：Double excitation transmitting connects
Receive device and dual rotary Mechanism Combination body or three Laser emission receivers and three rotating mechanism assemblys or double excitation transmitting connects
Receive device and single rotating mechanism assembly.
Further, the rotating mechanism includes one kind of steering wheel, stepper motor or speed measuring motor；The rotating mechanism is
By common electric machine and the rotating mechanism of encoder assembles.
Further, the display device includes LCDs, LED display；The LCDs, LED display
Pass through wire connection controller；The display device also includes the dress being modified to display information in the arbitrary plane of scanning
Put；The device of the change passes through wire connection controller.
Further, Laser emission receiver and rotating mechanism are located at the both sides of scanned arbitrary plane any limit.
Further, multiple road indicating lamps are inlaid with the arbitrary plane；The multiple road indicating lamp is by leading
Line connects controller；The loudspeaker for reporting controller instruction are bolted on the housing.
The utility model another object is to provide a kind of utilization the above-mentioned contactless button system based on laser scanning
The outdoor calling taxi map of system.
Another object of the present utility model is to provide a kind of utilization the above-mentioned contactless button based on laser scanning
The shopping center steering map of system.
Advantage of the present utility model and good effect are：
The contactless key system based on laser scanning provided using the utility model, in identical area of detection
When, than the cost that touch-screen reduces by 90%, because the resolution ratio that this method is detected is not equally distributed, it is applicable to dividing
Resolution is not high, especially plane information amount occasion pockety, such as city map, and closer to downtown, information content is closeer
Collection, information content distribution in suburb is more sparse.If using 1 centimetre of light curtain of light source spacing, the utility model can save 95%
Number of light sources still be able to reach corresponding precision.
The utility model employs steering wheel and drives laser sensor scan perception keystroke to solve problem of the prior art
Position.By thin bars such as finger, pen, key, mobile phones or there can be wedge angle class article to indicate in corresponding region, be held by two steering wheels
The Laser emission receiver scanning of load is positioned to it, so as to realize the function of button detection.
The utility model has carried out keyboard making and the analysis of location algorithm on the basis of relevant experimental data is obtained,
Complete after keyboard model and numerical value read work, calculated value and actual reading value carried out comparing analysis, from theory with
Put into practice precision and reliability that two aspects confirm system；Taxi boarding station map demo function is finally completed, also simultaneously
The function of the keyboard is extended, it is applied in the steering map in shopping mall market.
The utility model employs transformation approach and the method for substitution to realize the measurement of position, and conventional keys are all based on right angle seat
Two seat target values of mark system measurement X, Y, the utility model is converted to two laser sensor scannings of measurement to the angle of object；With
Two angle values of trigonometric coordinates system replace two length values of rectangular coordinate system, in the uneven a small amount of accuracy of detection of reduction
Significantly simplify the internal structure of an organization simultaneously.
Brief description of the drawings
Fig. 1 is the contactless key system schematic diagram based on laser scanning that the utility model embodiment is provided；
Fig. 2 is the front view that the utility model embodiment is provided.
Fig. 3 is the dorsal view that the utility model embodiment is provided.
Fig. 4 is the upward view that the utility model embodiment is provided.
Fig. 5 is the contactless key system right view based on laser scanning that the utility model embodiment is provided.
In figure：1st, Laser emission receiver；2nd, display device；3rd, rotating mechanism mounting；4th, rotating mechanism；5th, housing；6、
Slide rheostat；7th, arbitrary plane；8th, cushion block；9th, button；10th, controller；11st, triode；12nd, resistance；13rd, loudspeaker；14th, it is electric
Hold；15th, battery；16th, connection jaws；17th, road indicating lamp.
Fig. 6 is the contactless key system circuit diagram based on laser scanning that the utility model embodiment is provided.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, with reference to embodiments, to this
Utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this practicality
It is new, it is not used to limit the utility model.
Application principle of the present utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 6, the contactless key system bag based on laser scanning that the utility model embodiment is provided
Include：
With the wired connection of controller 10, for entering to being positioned at object on the arbitrary plane 7 of picture and word exhibition information
The Laser emission receiver 1 of row scanning；
With the wired connection of controller 10, for the rotating mechanism 4 being adjusted to Laser emission receiver scanning angle；
For receiving the information of the scanning of Laser emission receiver 1 and being analyzed and handled, it is additionally operable to adjust rotating mechanism 4
The controller 10 of running status；
With the wired connection of controller 10, for showing location information and controller 10 that Laser emission receiver 1 detects
The display device 2 of correlation analysis result；
The Laser emission receiver 1 is two or three；Rotating mechanism 4 is one to three；Laser emission receiver
Included with rotating mechanism according to functional requirement concrete configuration：Double excitation transceiver and dual rotary Mechanism Combination body or three
Laser emission receiver and three rotating mechanism assemblys or double excitation transceiver and single rotating mechanism assembly.
Controller 10 is bolted on the housing rear end face of the contactless key system based on laser scanning；
Arbitrary plane 7 is attached to the upper surface of housing 5；
The display device 2 is bolted on the top of the housing 5；
The Laser emission receiver 1 is bolted on rotating mechanism mounting 3；The rotating mechanism mounting 3 leads to
Cross and be bolted on rotating mechanism 4；The rotating mechanism 4 is bolted on the top of housing 5；
Rotating mechanism 4 is made up of the motor with record anglec of rotation function, and the motor is steering wheel, stepper motor or survey
One kind of speed motor；The rotating mechanism or for by the rotating mechanism of common electric machine and encoder assembles.
The display device 2 includes LCDs, LED display；The LCDs, LED display pass through
Wire connection controller 10；The display device also includes the device being modified to display information in the arbitrary plane of scanning；
The device of the change passes through wire connection controller 10.
Laser emission receiver 1 and rotating mechanism 4 are located at the both sides of scanned map any limit, two or three laser
Scanned arbitrary plane is completely covered in the fan-shaped intersectional region of the laser beam formation of transceiver rotation.
Multiple road indicating lamps 17 are inlaid with the arbitrary plane；The multiple road indicating lamp is connected by wire
Controller 10.
Described two or three Laser emission receivers 1 pass through slide rheostat 6 and the wired connection of controller 10.
The lower end of housing 5 passes through gluing two cushion blocks 8 being connected to positioned at the different ends of housing；The controller 10 passes through spiral shell
Bolt is fixed on housing lower end and between two cushion blocks 8.
The upper end of housing 5 has been bolted button 9；The button 9 is connected by wire with controller；The control
Triode 11, resistance 12, electric capacity 14, connection jaws 16 and MCU are integrated with device 10 processed；The triode 11, resistance 12, electric capacity
14th, connection jaws 16 connect MCU by wire.
The loudspeaker 13 for reporting controller instruction are bolted on the housing 5；Lead on the housing lower surface
Cross bolt and be fixed with battery 15；The battery 15 connects controller 10, Laser emission receiver 1, whirler by wire respectively
Structure 4, display device 2.
The utility model is further described with reference to operation principle.
The utility model is a kind of method of people and intelligence machine information exchange, easy to be intuitively excellent with touch screen operation
Point, is light curtain producing method is different using the operating principle of touch-screen and safe light curtain, but different from safe light curtain, this reality
It is to rotate to produce by Laser emission receiver with new light curtain.On arbitrary plane, the image in plane, text can be passed through
Word etc. reads information, and such as display, map, blackboard, wall can also be sensed corresponding by placing reception device in the plane
Action, so that action message is sent to the switch on controller, such as most common wall, touch-screen is exactly in display
Add last layer sense film on surface, membrane switch panel is exactly to cover one layer on switch key to depict the thin of relevant information
Film, safe light curtain is exactly one layer of infrared ray light curtain of generation before relevant range.These, which are provided to realize, is reading plane information
Click information can also be sent to controller simultaneously.
The utility model is also such principle：Using the Laser emission receiver hair of rotation above any information plane
The laser beam scanning penetrated produces one layer of laser light curtain, and when there is object to touch light curtain, Laser emission receiver believes correlation
Number send controller to.Common safe light curtain is the light transceiver by some fixed positions, and resolution ratio is depended on
Number is installed, if needing high-resolution then can be so that structure becomes complicated, cost can also be improved, and the utility model is to use light
Line scans to form light curtain.Light scanning also has two ways, and one kind is that laser beam moves in parallel to form rectangle light curtain, a kind of
It is that laser beam rotates to form sector optical curtain.Much more complicated than rotating mechanism of device for mechanical structure of equality movement.So this
Utility model employs rotating mechanism.
The positioning precision that the utility model is obtained is uneven distribution in the plane of scanning motion.Current Laser emission receiver
There are two kinds, a kind of is that can accurately measure the distance of the object and Laser emission end that stop laser beam, and one kind is to measure
Whether have object block laser beam and can not fine-resolution distance, former can be with the Laser emission receiver of ranging
It is very expensive, be not suitable for using and promoting in this occasion of the utility model.
If future occur price it is relatively low can accurate ranging Laser emission receiver, can be made completely using it
The device referred to as the utility model, the installation site of Laser emission receiver is once fixed, can when laser beam is blocked
To calculate specific position of the object on the plane of scanning motion by the distance between angle value and object now and emission source value
Put.The device that current the utility model makes use can not ranging Laser emission reception device, due to angle can only be known
Angle value is accurately positioned without knowing distance value so can not realize, but it is accurate to realize to can be by one detection limit of increase
Positioning.Current the utility model uses the two point positioning side of two Laser emission receivers and two rotating mechanism formation
Method：To be distributed in ray two sector optical curtains of formation that the rotary laser source of two diverse locations is sent, the area of institute's alternate covering
When there is object stop laser beam any point in domain, system can obtain two angle values, can be calculated and know by trigonometric function
Its position coordinate value.
Further, it is arranged in simultaneously on a rotating mechanism using two lasing light emitters, by two laser beams by object
Two angles during stop can also calculate its position coordinates, but be due to that two laser source position must be positioned at its rotating diameter
Within, 2 hypertelorisms can cause rotating mechanism oversized, and hypotelorism can then cause measurement accuracy to decline, but can be with
Made up by improving the precision of angle measuring sensor.Limited by mechanism size and measurement accuracy, the current device applied field
Close unknown.
Further, it is possible to measurement accuracy and measuring speed are improved by the setting number for increasing lasing light emitter and rotating mechanism,
Higher functional requirement is reached, its part area can be used to obtain for example with three Laser emission receivers and three rotating mechanisms
Domain precision is improved.
Further, light curtain scanning and object detection, galvanometer can also be formed by the principle of mirror-vibrating laser barcode scanning gun
Formula laser barcode scanning gun is on the mirror laser projection a to vibration, to produce a laser scanning line, then by CCD or take the photograph
As first-class Visual identification technology gathers the power of reflection light, come the position of judgment object.
The utility model is clicked on using contactless, reduces situation defaced when using.The utility model uses two point
Laser rotary scanning, is positioned with sensing angle, and simple in construction, with low cost, precision is high, accumulated big, strong interference immunity by contacting surface.Can
Suitable for the round-the-clock various adverse circumstances of indoor and outdoor.
Application principle of the present utility model is further described with reference to specific embodiment.
The utility model embodiment provide key system in order to solve problem of the prior art employ steering wheel drive swash
Light transceiver scan perception keystroke position.
The key system that the utility model embodiment is provided carry out keyboard system on the basis of relevant experimental data is obtained
Make the analysis with location algorithm, complete keyboard model with after numerical value read work, calculated value and actual reading value are carried out
Analysis is compared, confirms the precision and reliability of system in terms of theory and practice two；Finally complete taxi boarding station
Map demo function, while also extending the function of the keyboard, allows it to apply in the steering map in shopping mall market.
The key system that the utility model embodiment is provided employs transformation approach and the method for substitution to realize the measurement of position, passes
System button is all based on two seat target values of rectangular coordinate system measurement X, Y, and the utility model is converted to two Laser emissions of measurement
Receiver scanning replaces two length values of rectangular coordinate system to the angle of object with two angle values of trigonometric coordinates system.
Laser emission receiver voltage 5V, electric current 100mA that the utility model embodiment is provided, detecting distance is at 1 centimetre
To between 1.5 meters.Its operation principle is to produce beam of laser by laser generator, can be produced instead when laser is irradiated on object
Penetrate, receiving terminal has light-sensitive element and filter lens, reflected light can be received, and export corresponding signal.Due to filter lens only
Laser wavelength light wave is allowed to enter, so extraneous strong light hardly causes any interference to sensor.
Its size is convenient compared with I to be installed：It is long:20MM, width:10MM, height:8MM.Photoelectric sensor (optoelectronic switch) is
NPN open types, the technical parameter of optoelectronic switch:
1) output current DC/SCR/ relays Control output：100mA/5V powers；
2) consumption electric current DC<25mA；
3) response time<2ms；
4) angle is pointed to：≤ 7.5 °, coverage 1-100CM is adjustable；
5) detection object：Transparent or opaque body.
The rotating mechanism that the utility model embodiment is provided has two kinds, and one kind is to use direct current generator+encoder, this side
Case detection speed is fast, precision is high, but structure is more complicated, and programme-control is also cumbersome；Another use steering wheel, structure letter
Single, program is simple, but is due to that the anglec of rotation only has 180 degree, so can be only done reciprocating scanning, reduces the speed of detection
Degree.In order to ensure accuracy of detection, what the key system that the utility model embodiment is provided was utilized is digital rudder controller.
The MCU for the controller that the utility model embodiment is provided uses Arduino controllers, and instruction is simple, programming is easy,
Arduino has UNO, Nano, 2,560 3 kinds of models, in order to save space the utility model using Nano types Arduino.
It is uneven, this practicality in the resolution ratio of detection zone due to double excitation transceiver laser rotary scanning
The map that new embodiment is provided carries out recording left and right steering wheel in pinpoint measurement test experiments, every lattice using squared paper
The anglec of rotation, according to data analysis, closer to central area, Numerical accuracy is higher, is got over closer to fringe region accuracy
Low, this characteristic is best suitable for applying on city map, because downtown is bustlinier, and information point is also than comparatively dense, and suburb
Information point it is then more dispersed.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (6)
1. a kind of contactless key system based on laser scanning, it is characterised in that the noncontact based on laser scanning
Formula key system includes：It is bolted on the control in the housing rear end face of the contactless key system based on laser scanning
Device；
It is attached to the picture of the housing upper surface and the arbitrary plane of word exhibition information；
With the Laser emission receiver of controller wired connection；
With the rotating mechanism of controller wired connection；
With the display device of controller wired connection；
The Laser emission receiver is bolted on rotating mechanism mounting；The rotating mechanism mounting is solid by bolt
It is scheduled on rotating mechanism；The rotating mechanism is bolted on the top of housing；The display device is bolted
On the top of the housing；
The Laser emission receiver is two or three；Rotating mechanism is one to three.
2. the contactless key system as claimed in claim 1 based on laser scanning, it is characterised in that Laser emission is received
Device includes with rotating mechanism according to functional requirement concrete configuration：Double excitation transceiver and dual rotary Mechanism Combination body or three
Individual Laser emission receiver and three rotating mechanism assemblys or double excitation transceiver and single rotating mechanism assembly.
3. the contactless key system as claimed in claim 1 based on laser scanning, it is characterised in that
The rotating mechanism includes one kind of steering wheel, stepper motor or speed measuring motor；The rotating mechanism is by common electric machine
With the rotating mechanism of encoder assembles.
4. the contactless key system as claimed in claim 1 based on laser scanning, it is characterised in that
The display device includes LCDs, LED display；The LCDs, LED display are connected by wire
Connect controller；The display device also includes the device being modified to display information in the arbitrary plane of scanning；The change
Device pass through wire connection controller.
5. the contactless key system as claimed in claim 1 based on laser scanning, it is characterised in that Laser emission is received
Device and rotating mechanism are located at the both sides of scanned arbitrary plane any limit.
6. the contactless key system as claimed in claim 1 based on laser scanning, it is characterised in that the arbitrary plane
On be inlaid with multiple road indicating lamps；The multiple road indicating lamp passes through wire connection controller；Pass through on the housing
Bolt is fixed for reporting the loudspeaker of controller instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720305459.1U CN206574067U (en) | 2017-03-27 | 2017-03-27 | A kind of contactless key system based on laser scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720305459.1U CN206574067U (en) | 2017-03-27 | 2017-03-27 | A kind of contactless key system based on laser scanning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206574067U true CN206574067U (en) | 2017-10-20 |
Family
ID=60053030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720305459.1U Expired - Fee Related CN206574067U (en) | 2017-03-27 | 2017-03-27 | A kind of contactless key system based on laser scanning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206574067U (en) |
-
2017
- 2017-03-27 CN CN201720305459.1U patent/CN206574067U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20200327 |
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| CF01 | Termination of patent right due to non-payment of annual fee |