CN104699330B - A kind of dining room formula order dishes system based on the detection of infrared surface battle array - Google Patents
A kind of dining room formula order dishes system based on the detection of infrared surface battle array Download PDFInfo
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Abstract
A kind of dining room formula order dishes system based on the detection of infrared surface battle array, including support, infrared array, indicator lamp and processor, the corresponding vegetable dish of each indicator lamp；Each infrared array forms an infrared detection face formed by horizontal infrared beams group and longitudinal infrared beams group；In the switching state input processor of infrared beams；Processor obtains the switching state of each infrared beams in each infrared detection face respectively, obtain the rectangle that the infrared beams of off-state surround and obtain the central point of the rectangle, it is in line again with the rectangular centre point fitting in each face, obtain fitting a straight line and the intersection point in face where vegetable dish, finally judge that the intersection point is in the region of which vegetable dish, the vegetable that vegetable dish region where intersection point is chosen as diner, processor lights indicator lamp corresponding with vegetable dish region where intersection point, and remaining indicator lamp is in OFF state.The present invention has the advantages of can accurately obtaining target vegetable according to the gesture of dining people.
Description
Technical field
The present invention relates to a kind of dining room formula order dishes system based on the detection of infrared surface battle array.
Technical background
Based on dining room, student's food plan of Forum on College Eating-room is present college student dining：Diner is arranged in pair, team
First diner beats the name of the dish that dish personnel illustrate oneself needs to dining room, beats dish personnel and buys dish according to name of the dish for diner, then
Beat dish personnel and calculate institute's spending amount, and spending amount is input to card reader, swiped the card and paid by diner.
Because the meal time concentrates, The clamors of the people bubble up in dining room during dining, and band plus diner has an accent, and beats dish personnel and does not allow
Easily catch name of the dish described in diner, diner, which can also use, refers to the dish that gesture indicates that oneself needs, but due to diner and
Dish personnel present position difference is beaten, dish personnel is beaten and is also not easy to determine that diner refers to the target vegetable of gesture sensing, and beat every time
Complete dish also needs to beat the amount of money that dish personnel calculating dining personnel are consumed, and is operated on card reader so that beats the effect of dish
Rate is not high.
The content of the invention
During in order to overcome current dining room to buy dish, beat dish personnel and be not easy to determine the target vegetable of diner's instruction, beat dish people
The shortcomings that member needs mental arithmetic to obtain spending amount, target can accurately be obtained according to the gesture of dining people the invention provides a kind of
The dining room formula order dishes system that vegetable is detected based on infrared surface battle array.
A kind of dining room formula order dishes system based on the detection of infrared surface battle array, including support, the infrared array being installed on support,
Indicator lamp and processor, the corresponding vegetable dish of each indicator lamp；Infrared array is installed on support, the quantity of infrared array
To be multiple, each infrared array forms an infrared detection formed by horizontal infrared beams group and longitudinal infrared beams group
Face, infrared detection face be arranged in parallel, and each infrared beams have wire harness mark；The switching state input processing of infrared beams
In device；Arm passes through each infrared detection face when diner orders dishes, and the infrared beams blocked by arm are off, not by
The infrared beams that arm blocks are in connected state；
Processor obtains the switching state of each infrared beams in each infrared detection face respectively, obtains off-state
Rectangle that infrared beams surround simultaneously obtains the central point of the rectangle, then is in line with the rectangular centre point fitting in each face, obtains
Fitting a straight line and the intersection point in face where vegetable dish, finally judge that the intersection point is in the region of which vegetable dish, the dish where intersection point
The vegetable that disk area is chosen as diner, processor light indicator lamp corresponding with vegetable dish region where intersection point, and remaining refers to
Show that lamp is in OFF state.
Further, infrared detection face equidistantly distributes, the equidistant parallel distribution of wire harness of horizontal infrared beams group, longitudinal direction
The equidistant parallel distribution of wire harness of infrared beams group.Infrared beams are by the RF transmitter and infrared receiver that are arranged in pairs
Send and receive, when the light path between RF transmitter and infrared receiver is blocked, the infrared beams, which are in, to be disconnected
State；When the light path between RF transmitter and infrared receiver is unobstructed, the infrared beams are in an ON state.
Further, infrared beams in an ON state when, infrared receiver is put in high level and input processor, infrared
When wire harness is off, infrared receiver is set low in level and input processor, and processor obtains each infrared ray and connect
Receive the signal of device；Processor is using one of infrared detection face as benchmaring face, with any one in benchmaring face
Infrared receiver or infrared transmitter position are used as X as coordinate origin, using straight line where horizontal infrared beams group
Axle, using straight line where longitudinal infrared beams group as Y-axis, XYZO coordinates are established using the orientation in infrared detection face as Z axis
System, the plane where vegetable dish is parallel with XOZ faces, and each RF transmitter and receiver are set with the distance of itself and coordinate origin
Put coordinate；Processor obtains each infrared detection face and obtains the RF transmitter and infrared receiver being off respectively
The coordinate of device, and obtain the rectangular area that these coordinates surround.
Further, the detection faces on the basis of the infrared detection face closest to vegetable dish, with closest to the infrared detection face of vegetable dish
The lower left corner infrared remote receiver position as the origin of coordinates, the distance of plane and the origin of coordinates where measurement obtains vegetable dish,
And four summits and the distance of the origin of coordinates of each vegetable dish are obtained, the coordinate on four summits of vegetable dish is pre-stored in processor
In.
Further, processor is in line with the rectangular centre point in each face by least square fitting, fitting a straight line life
Cheng Hou, processor calculate the distance of each rectangular centre point and fitting a straight line respectively, reject the central point more than predetermined limit distance,
Remaining rectangular centre point is in line by least square fitting again, then calculates each rectangular centre point and fitting a straight line respectively
Distance, reject more than predetermined limit distance central point；Such iteration is multiple, until all central points and fitting a straight line away from
With a distance from less than predetermined limit, or untill iterations reaches default iterations；Predetermined limit distance and iterations are equal
It is pre-stored in processor.
Further, the corresponding relation of indicator lamp and vegetable dish is pre-stored in processor, and dish valency and the vegetable dish of vegetable dish correspond,
When indicator lamp lights, dish valency calculating is carried out in the dish valency input processor of corresponding vegetable dish.
When indicator lamp lights, represent vegetable dish corresponding with indicator lamp and be selected.Following requirement is done when ordering dishes：When ordering dishes
Hand will be in the range of all infrared detection faces, order dish, and hand leaves, after system does not detect hand-held continuous several seconds,
Think end of ordering dishes.Then processor is calculated in the dish valency summation input POS obtained, and the POS is fixedly installed on support.
Agreement refers to once the vegetable dish again, and the indicator lamp on side knocks out, and expression does not select the dish, and the amount of money is also left out from the cumulative amount of money.
After swiping the card, system reset, add up dish valency and reset, prepare.
Further, support is provided with the camera that can shoot actual vegetable picture in vegetable dish, the reality that camera obtains
In vegetable picture input processor, vegetable image and vegetable price corresponding table are preset with processor, processor obtains camera
The actual vegetable picture that takes and vegetable image comparison, search out most similar with actual vegetable picture vegetable image and vegetable valency
Lattice, vegetable price is set to be corresponded with vegetable dish.
During due to buying dish in dining room, diner is typically to form straight line with arm to point to required vegetable, therefore, the present invention
A segment signal in infrared detection face is passed through by intercepting diner, and is fitted the pointing direction for forming diner, so as to obtain
Corresponding vegetable, it is noisy to overcome dining room environment, sound problem not easy to identify.
The beneficial effects of the present invention are：
1st, efficient operation of ordering dishes is realized under the noisy environment in dining room, diner can select touching in dish ordering terminal
Touch and ordered dishes on screen, can also select to complete to order dishes operation with referring to gesture, formula order dishes system calculates automatically according to the situation of ordering dishes to disappear
Take the amount of money, and send spending amount to card reader.
2nd, vision system can identify the dish information in each vegetable dish on vegetable dish table, can tackle situations such as vegetable is changed,
Without manually participating in, the operating efficiency in dining room is improved.
3rd, beating dish personnel only needs to be carried out buying dish according to indicator lamp, settles accounts and is completed by processor so that beats the labor of dish personnel
Fatigue resistance reduces, and improves dining room efficiency.
Brief description of the drawings
Fig. 1 is device overall structure diagram.
Fig. 2 is camera and camera mounting seat layout drawing.
Fig. 3 is LED light schematic diagram.
Fig. 4 is the vegetable dish image of camera B collections.
Fig. 5 is infrared detection face schematic diagram.
Fig. 6 is infrared detection face principle schematic.
Fig. 7 updates dish information workflow diagram.
1, vegetable dish in figure, 2, LED light, 3, vegetable dish table, 4, infrared detection face battle array, 5, support, 6, camera mounting seat,
7th, camera, 8, dish ordering terminal, 9, supporting plate, 10, card reader, 11, wall.
Embodiment
Servicing unit, including processor as shown in figure 1, a kind of dining room based on machine vision is ordered dishes, support 5, camera peace
Dress seat 6, camera 7, vegetable dish 1, LED light 2, vegetable dish table 3, dish ordering terminal 8, multiple infrared detection faces 4, supporting plate 9,
Card reader 10, wall 11, screw.
As shown in Fig. 2 support 5 is provided with the camera 7 that can shoot actual vegetable picture in vegetable dish, camera 7 obtains
Actual vegetable picture input processor in, vegetable image and vegetable price corresponding table are preset with processor, processor will be taken the photograph
As actual vegetable picture and vegetable image comparison that head obtains, search out the vegetable image and vegetable consistent with actual vegetable picture
Price, vegetable price is set to be corresponded with indicator lamp 2.
As shown in figure 3, described vegetable dish 1 is placed on vegetable dish table 3, each side of vegetable dish 1 is provided with LED light 2.Wall
Supporting plate 9 is provided with 11 bodies, dish ordering terminal 8 is provided with supporting plate 9, the side of dish ordering terminal 8 is provided with card reader 10, supported
Support 5 is provided with plate 9, horizontal infrared ray is provided with support 5 and sends array, horizontal infrared receiver array is longitudinal infrared
Line sends array, longitudinal infrared receiver array.Array, horizontal infrared receiver are sent in conplane horizontal infrared ray
Array, longitudinal infrared ray send array, and longitudinal infrared receiver array forms an infrared detection face 4.
Horizontal infrared ray sends array, horizontal infrared receiver array, longitudinal infrared ray and sends array and longitudinal infrared ray
Receiving array forms infrared detection face 4 one by one, and the direction of the forearm of diner is detected in these infrared detection faces 4, and then
Complete to order dishes by the sensing of arm.Camera 7B is used for the picture for gathering same day vegetable dish 1, camera 7, dish ordering terminal 8, LED instructions
Lamp 2 and card reader 10 are connected to processor, are managed collectively by processor.
Infrared detection face 4 is infrared by a horizontal RF transmitter of row, a row level infrared light receiver, a row longitudinal direction
Line transmitter and the vertical infrared receiver composition of a row, each horizontal infrared transmitter receive with a level infrared light
Device is corresponding, and each longitudinal RF transmitter is corresponding with a vertical infrared receiver, is embedded in the case of not blocking,
Level infrared light receiver can receive the infrared beam from corresponding horizontal infrared transmitter, and vertical infrared receiver can be received
To the infrared beam from corresponding longitudinal RF transmitter.
The detection faces on the basis of the infrared detection face closest to vegetable dish 1, with closest to the lower-left in the infrared detection face of vegetable dish 1
The position of the infrared remote receiver at angle as the origin of coordinates, using straight line where horizontal infrared beams group as X-axis, with longitudinal infrared ray
Straight line where beam group as Y-axis, establish XYZO coordinate systems using the orientation in infrared detection face as Z axis, putting down where vegetable dish
Face is parallel with XOZ faces, and each RF transmitter and receiver set coordinate with the distance of itself and coordinate origin；Processor point
Each infrared detection face is not obtained and obtains the coordinate of the RF transmitter being off and infrared receiver, and is obtained
The rectangular area that these coordinates surround；Measurement obtains the distance of the place plane of vegetable dish 1 and the origin of coordinates, and obtains each vegetable dish 1
Four summits and the origin of coordinates distance, the coordinate on four summits of vegetable dish 1 is pre-stored in processor.Although the present embodiment
Illustrated on the basis of the infrared detection face closest to vegetable dish 1 exemplified by detection faces, but be not limited to that using the infrared detection face as
The situation in benchmaring face or the detection faces on the basis of other infrared detection faces, due to the installation position in infrared detection face
Determination is put, the position of each RF transmitter and infrared receiver and adjacent distance are, it is known that with different infrared detections
Coordinate transforming value is only needed on the basis of face during detection faces.
Equidistantly L sets infrared detection face 4 as shown in Figure 5, and the quantity of detection faces is set according to the length of forearm, at least
For two.When diner orders dishes, in the detection zone of infrared detection face 4, with arm point to need vegetable dish 1, due to
Meal person's forearm blocks, and there is parts transversely and the infrared receiver of longitudinal direction to be blocked in each infrared detection face 4, and
These parts blocked can reflect that in the middle position of each detection faces, these positions have been connected in space for diner's forearm
Come, as the forearm direction of diner, fallen according to the extended line of forearm direction in the region of some vegetable dish 1, as selection should
Dish, LED light 2 corresponding with vegetable dish 1 light.
When diner's forearm is in detection zone, in each detection faces, forearm meeting shield portions are horizontal and vertical
Infrared beams so that corresponding infrared receiver does not receive signal.When between RF transmitter and infrared receiver
Light path when being blocked, the infrared beams are off, and infrared receiver sets low level, value is in 0 input processor；
When the light path between RF transmitter and infrared receiver is unobstructed, the infrared beams in an ON state, infrared ray
Receiver puts high level, value is in 1 input processor.Processor reads the value of each infrared receiver, obtains arm section
The coordinate position that center is in current detection areal coordinate system, the spacing of wire harness is set according to the size of forearm in detection faces,
The interval of infrared beams takes 0.5cm in the present embodiment.
Processor reads the horizontal infrared receiver of i-th of detection faces,,...,(k is every
The horizontal infrared receiver number in individual infrared detection face) and longitudinal infrared receiver,,...,(k is
The number of longitudinal infrared receiver in each infrared detection face) output valve, output valve is 0 horizontal and vertical infrared ray
Receiver and corresponding horizontal and longitudinal RF transmitter determine the region being blocked in i-th of detection faces, that is, small
Region residing for arm, this region are rectangle, and arm section is ellipse, and the region being blocked in i-th of detection faces is by hand
The rectangular area that arm blocks, as long as infrared beams are enough, arm section will be concentric with the rectangular area, then we are by rectangle region
Centre coordinate of the center in domain as arm section in i-th of detection faces, is designated as（）, arm section is in i-th of detection
Centre coordinate in face（）Coordinate in OXYZ coordinate systems is（）, whereinFor i-th of detection faces distance
The distance in benchmark infrared detection face.
The boundary rectangle computational methods of arm section ellipse are to take the horizontal infrared receiver of i-th of detection faces respectively
Device,,...,(k is the horizontal infrared receiver number of each detection faces) and longitudinal infrared receiver
Device,,...,The sensing that output valve is 0 in (k is longitudinal infrared receiver number of each detection faces)
The clipping room of the coordinate where sensor residing among device, horizontal infrared receiver and longitudinal infrared receiver away from for d,
If horizontal infrared receiver,...Output valve is 0, longitudinal infrared receiver,...Output valve is 0, then rectangular area centre coordinate is { [p+ (q-p)/2] d, [e+ (f-e)/2] d }.
As shown in fig. 6, now 9, No. 10 horizontal infrared receivers are occluded, 11,12 and No. 13 of vertical direction are red
Outer line receiver is occluded, and takes position of the average value for being occluded abscissa and ordinate as arm section in the detection faces
Put, the X axis coordinate using 12d and 9.5d as forearm in coordinate system residing for i-th of detection facesWith Y-axis coordinate, it is the coordinate as arm section using the distance of the 1st detection faces of i-th of detection faces distance, forearm is so obtained every
The coordinate of central point in one detection faces（）.It will utilize in rectangular area of the forearm in each infrared detection face
The coordinate of heart point is as follows into straight specific method by least square fitting：
Fitting a straight line formula is as follows：
Abbreviation is
Wherein：
Using minimum two-value method fitting a straight line equation, the forearm spatial point detected for i-th of infrared detection face 4 is sat
Mark（）, the parameter a, b, c and d for calculating the linear equation to be fitted be as follows：
After fitting a straight line generation, processor calculates the distance of each rectangular centre point and fitting a straight line respectively, rejects and is more than in advance
If the central point of critical distance, then remaining rectangular centre point is in line by least square fitting, then calculate respectively each
The distance of rectangular centre point and fitting a straight line, reject the central point more than predetermined limit distance；Such iteration is multiple, until all
Untill the distance of central point and fitting a straight line is less than predetermined limit distance, or bruise number reaches default iterations；It is default
Critical distance and iterations are pre-stored in processor.
And m-th of vegetable dish is a region in coordinate system OXYZ, equation represents as follows：
Wherein：, it is the plane where vegetable dish,For vegetable dish to planeAway from
From m-th of vegetable dish, four summits are in planeSubpoint be respectively（,）、（,）、（,）With（,）.
Straight line where remembering forearmWith plane where vegetable dishIntersection point is（,）, by judging intersection point（,）Which belong in the region of vegetable dish（Namely meet）
M, you can know that straight line intersects with m-th of vegetable dish region where forearm, the dish for m-th of vegetable dish selected by diner.
The present invention technical concept be：Dining room personnel contain the same day ready-made dish in vegetable dish 1, and are positioned over vegetable dish table 3
On, camera 7 gathers the picture of whole vegetable dish table 3, and the picture of collection is sent into processor, and processor program is according to being gathered
The position division detection zone of each vegetable dish 1, each detection zone of program scanning, is extracted in each detection zone in image
The characteristics of image of vegetable, and matched with the characteristics of image of vegetable in database, obtain the letter of the vegetable in each vegetable dish 1
Breath, including title, price, these information are preserved to processor.
Diner selects mode of ordering dishes, and can select to carry out operation of ordering dishes on dish ordering terminal 8, and dish ordering terminal 8 will have dinner
The menu of person is sent to processor, or diner can select to make in infrared surface battle array detection zone and refer to gesture action, processing
Device reads the value of each detection faces infrared receiver, so that it is determined that diner's forearm is in the position of each detection faces, so
The fitting of these position coordinateses is in line by preprocessor, obtains the spatial attitude of forearm when diner orders dishes, judges forearm direction
Extended line fall in the region of which vegetable dish 1, as select the dish, LED light 2 corresponding with vegetable dish 1 lights, and has ordered dishes
Into it is that diner accomplishes fluently dish to beat dish personnel according to LED light 2, and processor inquires dish according to the dish clicked according to diner
Price, calculate consumption total value, and the POS is transmitted to by communication, cCredit card payment of having dinner simultaneously takes food away.
The workflow of whole device is：
1. staff is by dining room menu typing processor, including menu name, price and picture.
2. the renewal same day each dish information of vegetable dish 1, the camera 7 positioned at top gathers vegetable dish 1 on dining room same day vegetable dish table 3
Image, acquired image according to the position of each vegetable dish 1 as shown in figure 4, divide processing region, by image spy in processing region
Sign is matched with the database feature of formula order dishes system, obtains the title of vegetable and price letter in each vegetable dish 1 in same day dining room
Breath, its workflow are as shown in Figure 7.
3. diner orders dishes, diner selects mode of ordering dishes according to the hobby of oneself, can select in formula order dishes system terminal
Touch screen order dishes, can also select to make in infrared surface battle array detection zone and refer to gesture action, processor reads each inspection
The value of survey face infrared receiver, so that it is determined that diner's forearm is in the position of each detection faces, then processor by these
Position coordinates fitting is in line, and the spatial attitude of forearm when diner orders dishes is obtained, according to the extended line in forearm direction and vegetable dish 1
Intersection point determine the target vegetable dish 1 that diner points to, diner can adjust according to LED light 2 refer to gesture, and finger gesture is made in repetition
Action can complete operation of ordering dishes, and its operation principle is as shown in Figure 6.
4. dozen dish personnel buy dish, the menu that formula order dishes system selects according to diner, the LED lighted on the corresponding side of vegetable dish 1 refers to
Show lamp 2, beat dish personnel and completed to buy dish according to LED light 2.
5. diner's cCredit card payment, the dish that processor clicks according to diner, inquiry database obtain the price of same day dish,
Diner's spending amount is calculated, and sends spending amount to card reader 10, diner's cCredit card payment simultaneously takes food away.
6. 4 ~ step 6 of repeat step.
The device can service two diners simultaneously in supporting plate 9, and two are beaten dish personnel at the both sides of vegetable dish table 3, place
Reason device reads the value of each detection faces infrared receiver, so that it is determined that the quantity of diner's forearm and each forearm are each
The position of individual detection faces, the forearm direction of each diner is obtained, if for example, the left side and right side of each detection faces do not have
The arm for blocking wire harness is found, then two diners select dish ordering terminal 8 to be ordered dishes；If the left side of each detection faces
It was found that arm, right side is not found, then the diner on the left side selects dish ordering terminal 8 to be ordered dishes, and diner's selection on the right regards
Feel system is ordered dishes.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also and in art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (7)
- A kind of 1. dining room formula order dishes system based on the detection of infrared surface battle array, it is characterised in that：Including support, it is installed on red on support Outer linear array, indicator lamp and processor, the corresponding vegetable dish of each indicator lamp；Infrared array is installed on support, infrared ray To be multiple, each infrared array forms one and formed by horizontal infrared beams group and longitudinal infrared beams group the quantity of array Infrared detection face, infrared detection face be arranged in parallel, and each infrared beams have wire harness mark；The switching shape of infrared beams In state input processor；Arm passes through each infrared detection face when diner orders dishes, and the infrared beams blocked by arm are in disconnected Open state, the infrared beams do not blocked by arm are in connected state；Processor obtains each in each infrared detection face respectively The switching state of infrared beams, obtain the rectangle that the infrared beams of off-state surround and obtain the central point of the rectangle, then with The rectangular centre point fitting in each face is in line, and obtains fitting a straight line and the intersection point in face where vegetable dish, finally judges the intersection point In the region of which vegetable dish, vegetable that the vegetable dish region where intersection point is chosen as diner, processor makes and intersection point institute Lighted in indicator lamp corresponding to vegetable dish region, remaining indicator lamp is in OFF state.
- 2. the dining room formula order dishes system based on the detection of infrared surface battle array as described in claim 1, it is characterised in that：Infrared detection Face equidistantly distributes, the equidistant parallel distribution of wire harness of horizontal infrared beams group, and the wire harness of longitudinal infrared beams group is equidistant flat Row distribution.
- 3. the dining room formula order dishes system based on the detection of infrared surface battle array as described in claim 2, it is characterised in that：At infrared beams When on-state, infrared receiver is put in high level and input processor, when infrared beams are off, infrared ray Receiver is set low in level and input processor, and processor obtains the signal of each infrared receiver；Processor is with wherein one Individual infrared detection face is as benchmaring face, with any one infrared receiver in benchmaring face or infrared transmitter institute Position as coordinate origin, using straight line where horizontal infrared beams group as X axles, with straight where longitudinal infrared beams group Line as Y axles, XYZO coordinate systems are established using the orientation in infrared detection face as Z axles, plane and XOZ where vegetable dish Face is parallel, and each RF transmitter and receiver set coordinate with the distance of itself and coordinate origin；Processor obtains respectively Each infrared detection face obtains the coordinate of the RF transmitter being off and infrared receiver, and obtains these seats Mark the rectangular area surrounded.
- 4. the dining room formula order dishes system based on the detection of infrared surface battle array as described in claim 3, it is characterised in that：With closest to dish Detection faces on the basis of the infrared detection face of disk, with closest to the position of the infrared remote receiver in the lower left corner in the infrared detection face of vegetable dish As the origin of coordinates, the distance of plane and the origin of coordinates where measurement obtains vegetable dish, and obtain four summits of each vegetable dish with The distance of the origin of coordinates, the coordinate on four summits of vegetable dish is pre-stored in processor.
- 5. the dining room formula order dishes system based on the detection of infrared surface battle array as described in claim 4, it is characterised in that：Processor is with every The rectangular centre point in individual face is in line by least square fitting, and after fitting a straight line generation, processor calculates each rectangle respectively The distance of central point and fitting a straight line, the central point more than predetermined limit distance is rejected, then remaining rectangular centre point is passed through Least square fitting is in line, then calculates the distance of each rectangular centre point and fitting a straight line respectively, and rejecting is more than predetermined limit The central point of distance；Such iteration is multiple, until the distance of all central points and fitting a straight line is less than predetermined limit distance, or Untill iterations reaches default iterations；Predetermined limit distance and iterations are pre-stored in processor.
- 6. the dining room formula order dishes system as claimed in claim 5 based on the detection of infrared surface battle array, it is characterised in that：Indicator lamp and vegetable dish Corresponding relation be pre-stored in processor, the dish valency of vegetable dish corresponds with vegetable dish, when indicator lamp lights, the dish valency input of vegetable dish Dish valency calculating is carried out in processor.
- 7. the dining room formula order dishes system based on the detection of infrared surface battle array as described in claim 6, it is characterised in that：Support is provided with It can shoot the camera of actual vegetable picture in vegetable dish, in the actual vegetable picture input processor that camera obtains, processing Vegetable image and vegetable price corresponding table are preset with device, the actual vegetable picture that processor obtains camera and vegetable image Contrast, search out the vegetable image consistent with actual vegetable picture and vegetable price, vegetable price is corresponded with vegetable dish.
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| CN113674199A (en) * | 2021-07-06 | 2021-11-19 | 浙江大华技术股份有限公司 | Parking space detection method, electronic device and storage medium |
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| CN1773560A (en) * | 2005-11-10 | 2006-05-17 | 上海交通大学 | Restaurant price fixing and dishes ordering device |
| CN101464754A (en) * | 2008-12-19 | 2009-06-24 | 卫明 | Positioning method and apparatus for implementing multi-point touch control for any plane without peripheral at four sides |
| CN101907952A (en) * | 2010-03-25 | 2010-12-08 | 上海电子艺术发展有限公司 | Tabletop interactive meal ordering system and using method thereof |
| CN101901088A (en) * | 2010-08-06 | 2010-12-01 | 鸿富锦精密工业（深圳）有限公司 | Infrared control device |
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