CN117170528A - Optical touch screen-throwing method based on edge calculation - Google Patents
Optical touch screen-throwing method based on edge calculation Download PDFInfo
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Abstract
The invention discloses an optical touch screen throwing method based on edge calculation, which relates to the technical field of optical screen throwing, and comprises the steps of generating infrared light through polling scanning, judging whether the infrared light is shielded, and further determining whether to trigger infrared induction; and acquiring the point position triggering the infrared induction, acquiring a touch coordinate point corresponding to the point position triggering the infrared induction, and projecting the touch coordinate point onto a display, thereby realizing an optical touch screen projection method based on edge calculation.
Description
Technical Field
The invention relates to the technical field of optical screen projection, in particular to an optical touch screen projection method based on edge calculation.
Background
Conventional touch screen technologies generally adopt capacitive or resistive touch screens, but these technologies are limited by problems in terms of precision, cost, adaptability and the like, while the optical touch screen projection method can achieve capturing and processing of touch signals through a camera and edge computing equipment, and has higher sensitivity and adaptability.
When the optical touch screen projection method is used for screen projection, privacy data can be recorded, how to protect the privacy data is further effectively avoided, how to concentrate the optical screen projection of a plurality of touch devices on one display screen is achieved, the maximum utilization rate of the area of the display screen is achieved, and related data generated by the plurality of touch devices are reasonably distributed and calculated, so that load and bandwidth pressure generated by calculation are reduced, and the problems which are needed to be considered are solved at present.
Disclosure of Invention
In order to solve the above problems, the present invention aims to provide an optical touch screen projection method based on edge calculation.
The aim of the invention can be achieved by the following technical scheme: an optical touch screen projection method based on edge calculation comprises the following steps:
step S1: generating infrared light through polling scanning, judging whether the infrared light is shielded, and further determining whether to trigger infrared induction;
step S2: acquiring a point position triggering infrared induction, and acquiring a touch coordinate point corresponding to the point position;
step S3: and projecting the touch coordinate points on a display.
Further, the process of generating infrared light by polling scanning includes:
the method comprises the steps that an optical touch screen throwing system is arranged, the optical touch screen throwing system comprises a plurality of edge touch devices, a cloud computing terminal and a screen throwing terminal, the edge touch devices are used for acquiring touch operation of a touch object and corresponding touch data information, dividing the touch data information into local data information and cloud data information, and transmitting the cloud data information to the cloud computing terminal; the cloud computing terminal is used for acquiring cloud data information and processing the cloud data information, and the screen projection terminal is used for projecting a screen touch coordinate point on the display;
the polling scanning is performed by infrared transmitters arranged on a plurality of edge touch devices, a scanning period and a scanning frequency are set to emit infrared rays, and the infrared rays are provided with a scanning sequence and a scanning area.
Further, the process of triggering the infrared induction includes:
setting an infrared receiver and a touch panel area, and judging whether a touch object exists in the touch panel area or not when infrared rays perform polling scanning in the touch panel area;
when a touch object is captured by the touch panel area, the infrared light polling scanning is mapped to the touch object, reflected infrared light is further generated, the reflected infrared light is transmitted to an infrared receiver, the infrared receiver receives the reflected infrared light, and an instruction A is generated according to the reflected infrared light;
when the touch object is not captured in the touch panel area, setting a monitoring countdown to continuously carry out polling scanning of infrared light, and generating an instruction B after the monitoring countdown is finished;
transmitting the instruction A and the instruction B to a preset induction recognition area of the edge touch equipment, if the instruction A is acquired, the infrared light is shielded, then the infrared induction is triggered, and if the instruction B is acquired, the infrared light is not shielded, and the infrared induction is not triggered.
Further, the process of judging whether the touch panel area captures the touch object includes:
the touch panel area is provided with a pressure sensor, and the pressure sensor has a preset sensing pressure value interval which is recorded as omega, omega= [ P ] min ，P- max ]Wherein, P- min To detect the sensed minimum pressure, P- max Is the maximum pressure that can be detected;
when the touch object acts on the touch panel area, a corresponding sensing pressure is generated and is recorded as P, P is more than 0, the magnitude relation between the value of the sensing pressure P and the value interval omega of the sensing pressure is judged, and then whether the touch object exists in the touch panel area is determined.
Further, the process of obtaining the touch coordinate point includes:
numbering a plurality of edge touch devices, namely i, namely i=1, 2,3, … … and n, wherein n is a natural number greater than 0, and acquiring corresponding points of the plurality of edge touch devices triggering infrared induction; the point location triggering the infrared induction is also associated with touch operation of a touch object, corresponding mark identifiers are given to different touch operations, the touch operations of the different mark identifiers generate corresponding touch data information, and the touch data information comprises private touch information and non-private touch information;
starting from the number i=1, sequentially traversing and acquiring touch data information corresponding to a plurality of edge touch devices according to the number, further generating a plurality of to-be-processed data packets, marking the to-be-processed data packets only comprising non-private touch information as cloud data information, marking the to-be-processed data packets comprising the non-private touch information and the private touch information as local data information, carrying out local calculation on the local data information, transmitting the cloud data information to a cloud computing terminal for edge calculation, and further acquiring touch coordinate points.
Further, the process of local computing includes:
acquiring a data packet to be processed, giving corresponding identifications alpha and beta of private touch information and non-private touch information corresponding to the data packet to be processed,
setting a data storage stack, wherein the data storage stack comprises a privacy data storage stack and a non-privacy data processing stack, the data storage stack is provided with corresponding read-write areas, the data storage stack sequentially traverses a plurality of data packets to be processed, acquires corresponding identifiers in the respective read-write areas to judge, judges privacy touch information if the read-write areas read-write the identifiers to be alpha, stacks the privacy touch information to the privacy data storage stack, encrypts the privacy touch information and stores the privacy touch information in a preset privacy protection database, sets a destruction timing period, and destroys the privacy touch information in the destruction timing period; if the read-write identifier is beta, judging that the non-private touch information is the non-private touch information, stacking the non-private touch information to a non-private data processing stack, and marking the processed non-private touch information as cloud data information.
Further, the edge calculation process includes:
the cloud computing terminal acquires cloud data information and corresponds to the cloud data informationCapacity value of (2), the capacity value is recorded as C Cloud A capacity processing threshold is preset and marked as C Threshold value Preset concurrent specification capacity value, marked as C Specification of specification Setting a plurality of concurrent processing nodes, and setting the processing capacity of the concurrent processing nodes as a concurrent specification capacity value C Specification of specification The capacity processing threshold has the corresponding node number of concurrent processing nodes, and is recorded as N;
when C Cloud ≤C Threshold value In the process, the capacity value of the cloud data information is split into a plurality of C Specification of specification The capacity value represented by the numerical value is further used for generating touch coordinate points according to cloud data information through a plurality of concurrent processing nodes;
when C Cloud ＞C Threshold value When the cloud computing terminal is in operation, the optimal capacity processing threshold corresponding to the cloud computing terminal is acquired and marked as C Optimum for Processing threshold C according to optimal capacity Optimum for Capacity value C corresponding to cloud data information Cloud Generating a total computation capacity of the edge touch device, denoted C Edge assembly There is C Edge assembly ＝C Cloud －C Optimum for Setting edge allocation capacity, which is marked as C', and further acquiring edge calculation capacity of each edge touch device, which is marked as C Edge separation Then there is C Edge separation ＝C Edge assembly /C`；
The edge touch equipment is provided with corresponding edge computing nodes, corresponding touch coordinate points are generated by the edge computing nodes, the touch coordinate points are mapped onto a Cartesian coordinate system, and the mapped Cartesian coordinate system is synchronously converted into a projection coordinate system.
Further, the process of projecting the touch coordinate point onto the display includes:
the edge touch devices are respectively associated with a corresponding projection coordinate system, the projection coordinate system comprises a plurality of touch coordinate points, the touch coordinate points are packaged to generate a projection coordinate set corresponding to each edge touch device, projection mapping numbers are carried out on the projection coordinate sets, j=1, 2,3, … … and m are recorded as j, and m is an integer larger than 0;
the display is provided with a plurality of display partitions, the display partitions are numbered in a partition mode, the score areas are numbered as k, k=1, 2,3, … … and z are respectively provided, wherein z is a natural number larger than 0, and a partition screen throwing relation is established according to the projection mapping numbers and the partition numbers;
and acquiring a plurality of touch coordinate points corresponding to a projection coordinate set with a projection mapping number j, and projecting the touch coordinate points into a display partition with a partition number k, wherein k=j, a corresponding projection association sequence is arranged in the partition projection relation, and R= < j, k >.
Compared with the prior art, the invention has the beneficial effects that:
1. and judging whether touch objects exist in the touch panel area of each edge touch device or not, further judging whether infrared light is blocked, triggering infrared induction under the blocking condition, otherwise, generating a polling ending instruction and transmitting the polling ending instruction to the infrared transmitter of the edge touch device corresponding to the non-blocking infrared light, ending polling scanning, and reducing the system operation load cost caused by the polling scanning to a certain extent.
2. The optical touch screen may involve disclosure of relevant privacy data of a touch object to be screen-projected, touch data information generated by touch operation is acquired and divided into non-privacy touch information and privacy touch information, the privacy touch information is stored in a privacy protection database, and is destroyed, so that disclosure of relevant privacy data is effectively avoided, edge calculation is performed on the non-privacy touch information, and calculation load and bandwidth pressure of the cloud computing terminal are reduced to a certain extent.
3. The display is divided into a plurality of display partitions, the corresponding projection coordinate sets of each edge touch device are projected to the corresponding display partitions, and a projection screen association sequence is formed, so that on one hand, touch coordinate points of the plurality of projection coordinate sets are displayed on one display, the display area of the display is utilized to the greatest extent, one-screen multi-visualization is achieved, and on the other hand, the projection screen association sequence can be used as positioning data for fault repair of a plurality of edge touch devices.
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FIG. 1 is a flow chart of the present invention.
Detailed Description
As shown in fig. 1, an optical touch screen projection method based on edge calculation includes the following steps:
step S1: generating infrared light through polling scanning, judging whether the infrared light is shielded, and further determining whether to trigger infrared induction;
step S2: acquiring a point position triggering infrared induction, and acquiring a touch coordinate point corresponding to the point position;
step S3: and projecting the touch coordinate points on a display.
Specifically, the process of generating infrared light by polling scanning includes:
setting an optical touch screen throwing system, wherein the optical touch screen throwing system comprises a plurality of edge touch devices, a cloud computing terminal and a screen throwing terminal;
the edge touch equipment is used for acquiring touch operation of a touch object, further acquiring touch data information corresponding to the touch operation, dividing the touch data information into local data information and cloud data information, and transmitting the cloud data information to the cloud computing terminal;
the cloud computing terminal is used for acquiring cloud data information and processing the cloud data information so as to generate touch coordinate points corresponding to a plurality of edge touch devices;
the screen projection terminal is used for projecting the touch coordinate points on a display;
the polling scanning is performed by infrared transmitters arranged on a plurality of edge touch devices, the infrared transmitters are provided with a scanning period which is marked as T, and in the scanning period T, the infrared transmitters emit infrared light according to preset scanning frequency;
the infrared light is provided with a scanning sequence, the scanning sequence is from top to bottom, the area of each scanning area of the infrared light is fixed;
it should be noted that, the scanning period is set to 10 minutes, the scanning frequency is set to 30 times per minute, the scanning period, the scanning sequence and the area of the scanned area can be changed, the smaller the scanning period is, the smaller the area of the scanned area is, the better the fineness of the scanning result is, and the scanning sequence can be changed from bottom to top and from right to left;
specifically, the process of triggering the infrared induction includes:
the edge touch equipment is also provided with an infrared receiver and a touch panel area, the touch panel area is used as a carrier for carrying out polling scanning on infrared rays, and when the infrared rays carry out polling scanning on the carrier, whether a touch object exists in the touch panel area is judged;
when a touch object is captured by the touch panel area, the infrared light polling scanning is mapped to the touch object, reflected infrared light is further generated, the reflected infrared light is transmitted to an infrared receiver, the infrared receiver receives the reflected infrared light, and an instruction A is generated according to the reflected infrared light;
when the touch object is not captured in the touch panel area, setting a monitoring countdown time which is marked as T ', continuously carrying out polling scanning of the infrared light before the time corresponding to the monitoring countdown time is ended, and generating an instruction B after the monitoring countdown time T' is ended;
transmitting the instruction A and the instruction B to a preset induction identification area of the edge touch equipment, if the instruction A is acquired, indicating that the infrared light is blocked, further triggering infrared induction, if the instruction B is acquired, indicating that the infrared light is not blocked, not triggering infrared induction, synchronously generating a polling ending instruction, transmitting the polling ending instruction to an infrared transmitter of the corresponding edge touch equipment, and further stopping polling scanning;
the touch panel area is provided with a pressure sensor, and the pressure sensor has a preset sensing pressure value interval which is recorded as omega, omega= [ P ] min ，P- max ]Wherein, P- min To detect the sensed minimum pressure, P- max Is the maximum pressure that can be detected;
when the touch object acts on the touch panel area, correspondingly generating an induction pressure, recording as P, wherein P is more than 0, judging the magnitude relation between the value of the induction pressure P and the value interval omega of the induction pressure, and further determining whether the touch object exists in the touch panel area;
if P is more than 0 and less than P- min Marking that the touch object is not captured by the touch panel area;
if P- min ≤P≤P- max Labeling that the touch panel area captures a touch object;
if P > P- max Generating a prompt message of 'please touch the object away from the touch panel area', and synchronously sending an overhaul message to a preset administrator;
it should be noted that, by judging whether a touch object exists in the touch panel area of each edge touch device, further judging whether infrared light is blocked, triggering infrared induction under the blocking condition, otherwise, generating a polling ending instruction, transmitting the polling ending instruction to an infrared emitter of the edge touch device corresponding to non-blocked infrared light, ending polling scanning, and reducing system operation load cost brought by the polling scanning to a certain extent, wherein the touch object is an article with a plurality of shapes and a related part of living beings, such as an identity card, a teacup and the like, and the related part of living beings can be hands or feet of people.
Specifically, the process of acquiring the point location triggering the infrared induction and further acquiring the corresponding touch coordinate point comprises the following steps:
numbering a plurality of edge touch devices, namely i, namely i=1, 2,3, … … and n, wherein n is a natural number larger than 0, and correspondingly acquiring corresponding points of the plurality of edge touch devices triggering infrared induction when the plurality of edge touch devices trigger infrared induction;
touch operations of a touch object are also associated with the point positions corresponding to the infrared induction, the touch operations comprise a first type of touch operation and a second type of touch operation, and corresponding Sign marks are respectively given to the first type of touch operation and the second type of touch operation and are marked as Sign1 and Sign2;
the touch operation of the different mark marks generates corresponding touch data information;
when the Sign mark is Sign1, corresponding to a type of touch operation, and correspondingly generating touch data information comprising private touch information and non-private touch information;
when the Sign mark is Sign2, corresponding to the second type of touch operation, and correspondingly generating touch data information which is only non-privacy touch information;
sequentially traversing a plurality of edge touch devices according to the number from the number i=1, and acquiring touch data information corresponding to the edge touch devices, so as to generate a plurality of data packets to be processed, wherein the number i is used as a positioning number of the data packets to be processed;
marking a data packet to be processed which only comprises non-private touch information as cloud data information, marking the data packet to be processed which comprises the non-private touch information and the private touch information as local data information, carrying out local calculation on the local data information, and transmitting the cloud data information to a cloud computing terminal for edge calculation;
the content of the local calculation is as follows:
acquiring non-private touch information and private touch information included in a data packet to be processed, giving the private touch information identifier alpha and giving the non-private touch information identifier beta;
the method comprises the steps that a data storage stack is arranged and used for storing non-private touch information and private touch information corresponding to a data packet to be processed, the data storage stack comprises a private data storage stack and a non-private data processing stack, and the data storage stack is provided with corresponding read-write areas;
the data storage stack sequentially traverses a plurality of data packets to be processed, acquires corresponding identifiers in respective read-write areas to judge, and the judgment result is as follows:
if the reading and writing area reads and writes the identification alpha, judging that the privacy touch information is private, stacking the privacy touch information to a privacy data storage stack, encrypting the privacy touch information by the privacy data storage stack, and storing the privacy touch information in a preset privacy protection database;
the privacy protection database sets a destruction timing period, and in the destruction timing period, the privacy touch information stored in the privacy protection database is destroyed;
if the read-write area reads and writes the identification beta, judging that the information is non-private touch information, stacking the non-private touch information to a non-private data processing stack, and marking the non-private touch information as cloud data information after the non-private data processing stack processes the non-private touch information;
the contents of the edge calculation are as follows:
the cloud computing terminal acquires cloud data information and a corresponding capacity value, and marks the cloud data information as C Cloud A capacity processing threshold is preset and marked as C Threshold value Preset concurrent specification capacity value, marked as C Specification of specification Setting a plurality of concurrent processing nodes, wherein the processing capacity of each concurrent processing node is set as a concurrent specification capacity value C Specification of specification ；
The capacity handling threshold C Threshold value The number of the nodes with corresponding concurrent processing nodes is recorded as N;
when C Cloud ≤C Threshold value In the process, the capacity value of the cloud data information is split into a plurality of C Specification of specification The capacity value represented by the numerical value further generates a touch coordinate point according to cloud data information through a plurality of concurrent processing nodes, the plurality of concurrent processing nodes are marked as Num1, then Num1 is not more than N, and when Num1=N, N concurrent processing nodes are in a working state for generating the touch coordinate point;
when C Cloud ＞C Threshold value When the cloud computing terminal is in operation, the optimal capacity processing threshold corresponding to the cloud computing terminal is acquired and marked as C Optimum for Processing threshold C according to optimal capacity Optimum for Capacity value C corresponding to cloud data information Cloud Generating a total computation capacity of the edge touch device, denoted C Edge assembly There is C Edge assembly ＝C Cloud －C Optimum for Setting edge allocation capacity, which is marked as C', and further acquiring edge calculation capacity of each edge touch device, which is marked as C Edge separation Then there is C Edge separation ＝C Edge assembly /C`；
The edge touch equipment is provided with corresponding edge computing nodes, corresponding touch coordinate points are generated by the edge computing nodes, the touch coordinate points are marked as L, and L= (X, Y) exists, wherein X is the abscissa of the touch coordinate points L, Y is the ordinate of the touch coordinate points L, an infrared emitter performs X-axis polling and Y-axis polling through a corresponding IC controller, AD values of the corresponding X axis and Y axis are obtained, a Cartesian coordinate system is established, the AD values are mapped onto the Cartesian coordinate system, and the Cartesian coordinate system after the AD values are mapped is synchronously converted into a projection coordinate system;
it should be noted that, the optical touch screen may involve disclosure of related privacy data of the touch object performing the screen projection, and the disclosure of related privacy data is effectively avoided by acquiring touch data information generated by corresponding to the touch operation, dividing the touch data into non-privacy touch information and privacy touch information, storing the privacy touch information in a privacy protection database, and performing marketing destruction; in addition, the non-privacy touch information is marked as cloud data information, edge calculation is carried out, the calculation load and bandwidth pressure of the cloud calculation terminal are reduced to a certain extent, and the corresponding bandwidth pressure and calculation load are correspondingly optimal under the optimal capacity processing threshold.
Specifically, the process of projecting the touch coordinate point onto the display includes:
each of the plurality of edge touch devices is associated with a corresponding projection coordinate system, wherein the projection coordinate system comprises a plurality of touch coordinate points L, L= (X, Y);
summarizing a plurality of touch coordinate points L corresponding to each edge touch device, further packaging and generating a projection coordinate set corresponding to each edge touch device, numbering the projection coordinate set, and marking j as j, wherein j=1, 2,3, … … and m, wherein m is an integer greater than 0;
the number j is marked as a projection mapping number;
the screen-throwing terminal is used as a data sending end, the data sending end is associated with a corresponding communication port, the display is used as a data receiving end, and the data receiving end is associated with a corresponding receiving port;
a communication sequence table is preset, the communication sequence table records the correct communication matching relation between a communication port and a receiving port, when the communication port of the screen projection terminal and the receiving port of the display belong to the correct matching relation, a data communication relation is established for projection, otherwise, the data communication relation is not established, and projection is forbidden;
the display is provided with a plurality of display partitions, the display partitions are numbered in a partition mode, the score areas are numbered as k, k=1, 2,3, … … and z are respectively provided, wherein z is a natural number larger than 0, and a partition screen throwing relation is established according to the projection mapping numbers and the partition numbers;
a plurality of touch coordinate points corresponding to a projection coordinate set with a projection mapping number of j are obtained, and the touch coordinate points are projected into a display zone with a zone number of k, wherein the corresponding relation between j and k is as follows: k=j;
the partition screen-throwing relation has a corresponding screen-throwing association sequence, and is marked as R, and then R= < j, k >;
it should be noted that, on a display, a plurality of display partitions are divided by the display, so that a corresponding projection coordinate set of each edge touch device is projected to a corresponding display partition, a projection mapping number j corresponding to the projection coordinate set and a partition number k of the display partition are obtained, so as to form a projection association sequence, on one hand, touch coordinate points of the plurality of projection coordinate sets are displayed on the display, the display area of the display is utilized to the greatest extent, one-screen multi-visualization is achieved, on the other hand, the projection association sequence can be used as a positioning basis of a plurality of subsequent edge touch devices, for example: when the corresponding edge touch equipment fails, a failure prompt picture is generated in a display partition corresponding to the corresponding screen throwing association sequence, and then related personnel are timely arranged to repair the failure of the edge touch equipment.
The above embodiments are only for illustrating the technical method of the present invention and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present invention may be modified or substituted without departing from the spirit and scope of the technical method of the present invention.
Claims (8)
1. An optical touch screen projection method based on edge calculation is characterized by comprising the following steps:
step S1: generating infrared light through polling scanning, judging whether the infrared light is shielded, and further determining whether to trigger infrared induction;
step S2: acquiring a point position triggering infrared induction, and acquiring a touch coordinate point corresponding to the point position;
step S3: and projecting the touch coordinate points on a display.
2. The method for computing an optical touch screen based on edge of claim 1, wherein the polling scan process for generating infrared light comprises:
the method comprises the steps that an optical touch screen throwing system is arranged, the optical touch screen throwing system comprises a plurality of edge touch devices, a cloud computing terminal and a screen throwing terminal, the edge touch devices are used for acquiring touch operation of a touch object and corresponding touch data information, dividing the touch data information into local data information and cloud data information, and transmitting the cloud data information to the cloud computing terminal; the cloud computing terminal is used for acquiring cloud data information and processing the cloud data information, and the screen projection terminal is used for projecting a screen touch coordinate point on the display;
the polling scanning is performed by infrared transmitters arranged on a plurality of edge touch devices, a scanning period and a scanning frequency are set to emit infrared rays, and the infrared rays are provided with a scanning sequence and a scanning area.
3. The edge-computing-based optical touch screen method of claim 2, wherein triggering the infrared sensing comprises:
setting an infrared receiver and a touch panel area, and judging whether a touch object exists in the touch panel area or not when infrared rays perform polling scanning in the touch panel area;
when a touch object is captured by the touch panel area, the infrared light polling scanning is mapped to the touch object, reflected infrared light is further generated, the reflected infrared light is transmitted to an infrared receiver, the infrared receiver receives the reflected infrared light, and an instruction A is generated according to the reflected infrared light;
when the touch object is not captured in the touch panel area, setting a monitoring countdown to continuously carry out polling scanning of infrared light, and generating an instruction B after the monitoring countdown is finished;
transmitting the instruction A and the instruction B to a preset induction recognition area of the edge touch equipment, if the instruction A is acquired, the infrared light is shielded, then the infrared induction is triggered, and if the instruction B is acquired, the infrared light is not shielded, and the infrared induction is not triggered.
4. The method of claim 3, wherein determining whether the touch object is captured by the touch panel area comprises:
the touch panel area is provided with a pressure sensor, and the pressure sensor has a preset sensing pressure value interval which is recorded as omega, omega= [ P ] min ，P- max ]Wherein, P- min To detect the sensed minimum pressure, P- max Is the maximum pressure that can be detected;
when the touch object acts on the touch panel area, a corresponding sensing pressure is generated and is recorded as P, P is more than 0, the magnitude relation between the value of the sensing pressure P and the value interval omega of the sensing pressure is judged, and then whether the touch object exists in the touch panel area is determined.
5. The method for computing an optical touch screen based on edge of claim 4, wherein the step of obtaining the touch coordinate point comprises:
numbering a plurality of edge touch devices, namely i, namely i=1, 2,3, … … and n, wherein n is a natural number greater than 0, and acquiring corresponding points of the plurality of edge touch devices triggering infrared induction; the point location triggering the infrared induction is also associated with touch operation of a touch object, corresponding mark identifiers are given to different touch operations, the touch operations of different mark identifiers generate corresponding touch data information, and the touch data information comprises private touch information and non-private touch information;
starting from the number i=1, sequentially traversing and acquiring touch data information corresponding to a plurality of edge touch devices according to the number, further generating a plurality of to-be-processed data packets, marking the to-be-processed data packets only comprising non-private touch information as cloud data information, marking the to-be-processed data packets comprising the non-private touch information and the private touch information as local data information, carrying out local calculation on the local data information, transmitting the cloud data information to a cloud computing terminal for edge calculation, and further acquiring touch coordinate points.
6. The method for computing an optical touch screen based on edge of claim 5, wherein the process of locally computing comprises:
acquiring a data packet to be processed, giving corresponding identifications alpha and beta of private touch information and non-private touch information corresponding to the data packet to be processed,
setting a data storage stack, wherein the data storage stack comprises a privacy data storage stack and a non-privacy data processing stack, the data storage stack is provided with corresponding read-write areas, the data storage stack sequentially traverses a plurality of data packets to be processed, acquires corresponding identifiers in the respective read-write areas to judge, judges privacy touch information if the read-write areas read-write the identifiers to be alpha, stacks the privacy touch information to the privacy data storage stack, encrypts the privacy touch information and stores the privacy touch information in a preset privacy protection database, sets a destruction timing period, and destroys the privacy touch information in the destruction timing period; if the read-write identifier is beta, judging that the non-private touch information is the non-private touch information, stacking the non-private touch information to a non-private data processing stack, and marking the processed non-private touch information as cloud data information.
7. The method for computing an optical touch screen according to claim 6, wherein the computing the edge comprises:
the cloud computing terminal acquires cloud data information and a corresponding capacity value, wherein the capacity value is C Cloud A capacity processing threshold is preset and marked as C Threshold value Preset concurrent specification capacity value, marked as C Specification of specification Setting a plurality of concurrent processing nodes, and setting the processing capacity of the concurrent processing nodes as a concurrent specification capacity value C Specification of specification The capacity processing threshold has the corresponding node number of concurrent processing nodes, and is recorded as N;
when C Cloud ≤C Threshold value In the process, the capacity value of the cloud data information is split into a plurality of C Specification of specification The capacity value represented by the numerical value is further used for generating touch coordinate points according to cloud data information through a plurality of concurrent processing nodes;
when C Cloud ＞C Threshold value When the cloud computing terminal is in operation, the optimal capacity processing threshold corresponding to the cloud computing terminal is acquired and marked as C Optimum for Processing threshold C according to optimal capacity Optimum for Capacity value C corresponding to cloud data information Cloud Generating a total computation capacity of the edge touch device, denoted C Edge assembly There is C Edge assembly ＝C Cloud －C Optimum for Setting edge allocation capacity, which is marked as C', and further acquiring edge calculation capacity of each edge touch device, which is marked as C Edge separation Then there is C Edge separation ＝C Edge assembly /C`；
The edge touch equipment is provided with corresponding edge computing nodes, corresponding touch coordinate points are generated by the edge computing nodes, the touch coordinate points are mapped onto a Cartesian coordinate system, and the mapped Cartesian coordinate system is synchronously converted into a projection coordinate system.
8. The method for optically touching and screening based on edge calculation as recited in claim 7, wherein the step of screening the touch coordinate points onto the display comprises:
the edge touch devices are respectively associated with a corresponding projection coordinate system, the projection coordinate system comprises a plurality of touch coordinate points, the touch coordinate points are packaged to generate a projection coordinate set corresponding to each edge touch device, projection mapping numbers are carried out on the projection coordinate sets, j=1, 2,3, … … and m are recorded as j, and m is an integer larger than 0;
the display is provided with a plurality of display partitions, the display partitions are numbered in a partition mode, the score areas are numbered as k, k=1, 2,3, … … and z are respectively provided, wherein z is a natural number larger than 0, and a partition screen throwing relation is established according to the projection mapping numbers and the partition numbers;
and acquiring a plurality of touch coordinate points corresponding to a projection coordinate set with a projection mapping number j, and projecting the touch coordinate points into a display partition with a partition number k, wherein k=j, a corresponding projection association sequence is arranged in the partition projection relation, and R= < j, k >.
Priority Applications (1)
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