CN114322847A - Vectorization method and device for measured data of unidirectional scanning sensor - Google Patents
Vectorization method and device for measured data of unidirectional scanning sensor Download PDFInfo
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Abstract
The invention provides a vectorization method and a device for measured data of a unidirectional scanning sensor, which can realize the vectorization of the measured data of the unidirectional scanning sensor, improve the applicability and the measurement precision of the unidirectional scanning sensor, solve the problems of insufficient applicability, poor precision and the like in the application of the unidirectional scanning sensor, promote the application and the advantage exertion of the unidirectional scanning sensor in practice and have very practical application value.
Description
Technical Field
The invention relates to the technical field of measured data processing, in particular to a vectorization method and device for measured data of a unidirectional scanning sensor.
Background
In the measurement technology, compared with a trigger sensor, a scanning sensor (namely a scanning sensor) has the remarkable characteristics of having extremely strong data acquisition capacity, acquiring a large amount of data on the surface of a measured feature in a short time and being beneficial to carrying out fine analysis; the method has the capability of continuous data acquisition, can realize uninterrupted measurement, and has remarkable efficiency advantage for the measurement of continuous characteristics. Therefore, the scanning sensor has good application prospect in scenes of fine evaluation, continuous characteristic measurement and large-size high-density measurement.
In consideration of price and technical difficulty, a unidirectional scanning sensor is commonly used in the scanning sensors, which can only realize unidirectional measurement, and the obtained measurement data is one-dimensional scalar data of the measured feature, reflects the comprehensive variation of the actual profile of the measured feature relative to the theoretical profile, but cannot provide the specific variation of the actual profile point of the measured feature relative to the theoretical profile point in each direction, i.e. the unidirectional scanning sensor can only provide the variation of the measured feature, but cannot provide the variation direction of the measured feature.
Based on this, the unidirectional scanning sensor can only be used for measuring simple features with definite change directions or measuring features without paying attention to the change directions, but cannot be used for measuring complex features, such as free curves and free curved surfaces, which severely limits the application scenarios of the unidirectional scanning sensor and is difficult to exert its advantages. Moreover, since the one-directional scanning sensor can only provide one-dimensional scalar information about the measured feature, but cannot provide corresponding directional information, the profile obtained from the one-dimensional scalar information has a larger deviation than the actual profile, which affects the accuracy of the subsequent processing.
Disclosure of Invention
The invention provides a vectorization method and a vectorization device for measured data of a unidirectional scanning sensor, which are used for solving the defects in the prior art.
The invention provides a vectorization method for measured data of a unidirectional scanning sensor, which comprises the following steps:
acquiring scanning measurement path information of a measured feature on a measured workpiece by a unidirectional scanning sensor, and extracting position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information;
acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measuring point when the unidirectional scanning sensor scans and measures, and determining the measuring direction information of the actual contour point of the measured feature corresponding to the measuring point based on the position information of the theoretical contour point, the position information of the measuring point and the measuring direction information of the theoretical contour point;
vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
According to the vectorization method for the measured data of the one-way scanning sensor provided by the invention, the determining of the measurement direction information of the actual contour point of the measured feature corresponding to the measuring point based on the position information of the theoretical contour point, the position information of the measuring point and the measurement direction information of the theoretical contour point comprises the following steps:
determining a target contour point interval which is closest to the measuring point on the scanning measuring path based on the position information of the theoretical contour point and the position information of the measuring point, wherein the interval end points of the target contour point interval are two adjacent theoretical contour points;
determining interpolation parameters based on the position information of the target contour point closest to the measuring point in the target contour point interval and the position information of the interval endpoint;
and performing interpolation calculation on the measurement direction information of the interval endpoint based on the interpolation parameters to determine the measurement direction information of the actual contour point.
According to the vectorization method for the measured data of the unidirectional scanning sensor provided by the invention, the determining of the target contour point interval closest to the measuring point on the scanning and measuring path based on the position information of the theoretical contour point and the position information of the measuring point comprises the following steps:
determining line segment information of a contour point interval between every two adjacent theoretical contour points based on the position information of each theoretical contour point on the scanning measurement path;
and calculating the distance between the measuring point and each contour point interval based on the position information of the measuring point and the information of each line segment, and determining the target contour point interval.
According to the vectorization method for the measured data of the unidirectional scanning sensor provided by the invention, the vectorization is performed on the one-dimensional scalar information based on the measured direction information of the actual contour point, and then the vectorization method comprises the following steps:
and determining the position information of the actual contour point based on the vectorization result.
According to the vectorization method for the measured data of the unidirectional scanning sensor provided by the invention, the position information of the actual contour point is determined based on the vectorization result, and the vectorization method comprises the following steps:
and shifting the position information of the measuring point by the length corresponding to the one-dimensional scalar information along the measuring direction information of the actual contour point, and determining the position information of the actual contour point.
The vectorization method for the measured data of the unidirectional scanning sensor provided by the invention further comprises the following steps:
determining real-time position information of a measuring point on the unidirectional scanning sensor based on the measurement bearing equipment;
and carrying out time synchronization on the real-time position information and the one-dimensional scalar information, and determining the position information of the measuring point when the unidirectional scanning sensor scans and measures.
According to the vectorization method for the measured data of the unidirectional scanning sensor provided by the invention, the unidirectional scanning sensor comprises a laser scanning sensor and a contact type scanning sensor.
The invention also provides a vectorization device for the measured data of the unidirectional scanning sensor, which comprises:
the information acquisition module is used for acquiring scanning measurement path information of a measured feature on a measured workpiece by the unidirectional scanning sensor and extracting position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information;
the measurement information determining module is used for acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measurement point when the unidirectional scanning sensor scans and measures, and determining measurement direction information of an actual contour point of the measured feature corresponding to the measurement point based on the position information of the theoretical contour point, the position information of the measurement point and the measurement direction information of the theoretical contour point;
and the vectorization module is used for vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the vectorization method of the measured data of the unidirectional scanning sensor.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for vectorizing unidirectional scanning sensor measurement data as described in any of the above.
The present invention also provides a computer program product comprising a computer program which, when executed by a processor, implements a method for vectorizing one-directional scanning sensor measurement data as described in any of the above.
The vectorization method and the device for the measured data of the unidirectional scanning sensor can realize the vectorization of the measured data of the unidirectional scanning sensor, improve the applicability and the measurement precision of the unidirectional scanning sensor, solve the problems of insufficient applicability, poor precision and the like in the application of the unidirectional scanning sensor, promote the application and the advantage exertion of the unidirectional scanning sensor in practice, and have very practical application value.
Drawings
In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow chart of a vectorization method for measuring data by a unidirectional scanning sensor according to the present invention;
FIG. 2 is a schematic diagram of the vectorization method of the measured data of the unidirectional scanning sensor and the motion trajectory of the unidirectional scanning sensor according to the present invention;
fig. 3 is a schematic structural diagram of a vectorization apparatus for measuring data by using a unidirectional scanning sensor according to the present invention;
fig. 4 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the prior art, the unidirectional scanning sensor cannot be used for measuring complex characteristics with unclear change direction or focused on the change direction, so that the application scenes of the unidirectional scanning sensor are severely limited, and the advantage of the unidirectional scanning sensor is difficult to exert. Moreover, since the one-directional scanning sensor can only provide one-dimensional scalar information about the measured feature, but cannot provide corresponding directional information, the profile obtained from the one-dimensional scalar information has a larger deviation than the actual profile, which affects the accuracy of the subsequent processing. Therefore, the embodiment of the invention provides a vectorization method for measured data of a unidirectional scanning sensor.
Fig. 1 is a schematic flow chart of a vectorization method for measuring data by a unidirectional scanning sensor in an embodiment of the present invention, as shown in fig. 1, the method includes:
s1, acquiring the scanning measurement path information of the measured characteristics of the measured workpiece by the unidirectional scanning sensor, and extracting the position information of the theoretical contour point on the scanning measurement path and the measurement direction information of the theoretical contour point from the scanning measurement path information;
s2, acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measuring point when the unidirectional scanning sensor scans and measures, and determining the measuring direction information of the actual contour point of the measured characteristic corresponding to the measuring point based on the position information of the theoretical contour point, the position information of the measuring point and the measuring direction information of the theoretical contour point;
and S3, vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
Specifically, in the vectorization method for the measurement data of the unidirectional scanning sensor provided in the embodiment of the present invention, an execution main body may be a vectorization device for the measurement data of the unidirectional scanning sensor, and the device may be configured on a measurement carrying device. For example, the measurement apparatus may be configured in a controller of the measurement carrier apparatus, which is not particularly limited in the embodiment of the present invention. The measurement carrying device may be a device carrying a unidirectional scanning sensor, such as a machine tool, and the unidirectional scanning sensor may perform a controlled motion along a planned path on the measurement carrying device to achieve continuous scanning.
In the embodiment of the present invention, the unidirectional scanning sensor refers to a scanning sensor whose measured data is one-dimensional scalar information, and may be a contact scanning sensor or a non-contact scanning sensor, for example, which may be a laser scanning sensor.
Step S1 is executed to obtain the scanning measurement path information of the measured feature on the measured workpiece by the unidirectional scanning sensor, and extract the position information of the theoretical contour point on the scanning measurement path and the measurement direction information of the theoretical contour point from the scanning measurement path information. The workpiece to be measured is a workpiece whose profile information needs to be measured, and may be various workpieces required by industrial production. The measured characteristic refers to information to be measured of the measured workpiece, and may include, for example, an edge, an outer surface, a hole, and the like of the measured workpiece. The edge may be in a free curve form, the outer surface may be a free surface, a curved surface, a plane, etc., the edge of the hole may be in a regular shape such as a circle, a square, a rectangle, etc., or may be a free polygon, which is not specifically limited herein.
In the embodiment of the present invention, the scanning measurement path information may be represented by a segment of program, and the scanning measurement path information may be imported into the measurement carrying device in a program import manner, so that the measurement carrying device may acquire the scanning measurement path information, and further may control a scanning measurement action of the unidirectional scanning sensor by executing the program.
The scanning measurement path information is used for representing a scanning measurement path of the unidirectional scanning sensor, and the scanning measurement path refers to a path which is planned according to the theoretical profile of a measured characteristic in advance in order to ensure the unidirectional scanning sensor to scan and measure the measured characteristic on the measured workpiece. The theoretical profile of the measured feature may be determined according to a theoretical model of the measured workpiece, and the theoretical model of the measured workpiece may be determined according to factory information or a design drawing of the measured workpiece, which is not specifically limited herein.
If the measured characteristic is an edge of the measured workpiece, the scanning measurement path can be the edge; if the measured feature is the outer surface of the measured workpiece, the scanning measurement path may be every row or every column of the outer surface; if the feature being measured is a hole in the workpiece being measured, the scan measurement path may be the circumference of the hole.
In the embodiment of the present invention, the scanning measurement path is usually formed by arranging a plurality of theoretical contour points on the measured feature according to a theoretical scanning sequence, and therefore, the scanning measurement path information may include position information of the theoretical contour points on the scanning measurement path and measurement direction information of the theoretical contour points. The position information of the theoretical contour point and the measurement direction information of the theoretical contour point can be extracted from the scanning measurement path information.
It is understood that the position information of the theoretical contour points may be represented by three-dimensional coordinates. The measurement direction information of the theoretical contour point may be a perpendicular direction to a tangential direction of the scanning measurement path at the theoretical contour point, and may be represented in the form of a spatial three-dimensional vector.
Then, step S2 is executed. The unidirectional scanning sensor is configured on the measurement bearing equipment, and the unidirectional scanning sensor can perform controlled motion on the measurement bearing equipment, so that the unidirectional scanning sensor can be controlled by the measurement bearing equipment to move on the measurement bearing equipment according to a scanning measurement path, so that a probe of the unidirectional scanning sensor performs scanning measurement, and a scanning measurement result is obtained, wherein the scanning measurement result can be one-dimensional scalar quantity information, and the one-dimensional scalar quantity information can be real-time extension and retraction quantity of the probe of the unidirectional scanning sensor and is used for representing comprehensive variation quantity of an actual profile point of a measured characteristic relative to a theoretical profile point.
In addition, position information of a measurement point when the unidirectional scanning sensor performs scanning measurement may be obtained, where the position information of the measurement point is used to represent position information of the unidirectional scanning sensor, and the measurement point may be an equivalent position point of the unidirectional scanning sensor, or may refer to a certain fixed position point on the unidirectional scanning sensor, for example, a probe center of a contact type scanning sensor, or a laser emission point of a laser scanning sensor, and is not specifically limited herein. The position information of the measuring point can also be represented in the form of three-dimensional coordinates.
Then, combining the position information of the theoretical contour point, the position information of the measuring point and the measuring direction information of the theoretical contour point, the measuring direction information of the actual contour point of the measured feature corresponding to the measuring point can be determined. Here, the measurement point may be projected onto the scanning measurement path according to the position information of the theoretical contour point and the position information of the measurement point, and the interpolation parameter may be determined, and then the measurement direction information of the actual contour point of the measured feature corresponding to the measurement point may be determined by combining the interpolation principle, the interpolation parameter, and the measurement direction information of the theoretical contour point.
It can be understood that the scanning measurement path is a path formed by theoretical contour points of the measured feature, and the scanning measurement path is also a path for ensuring that the unidirectional scanning sensor can scan to the theoretical contour points under the theoretical condition, so that the trends of the motion tracks of the scanning measurement path and the measurement points are completely consistent. However, considering the working principle of the unidirectional scanning sensor, the scanning measurement path and the motion track of the measurement point usually have a certain distance therebetween, and the distance can be determined according to practical situations. For example, the unidirectional scanning sensor is a contact scanning sensor, which usually has a probe, which usually has a spherical ball shape, and the distance between the scanning measurement path and the motion trajectory of the measurement point may be the radius of the probe. If the unidirectional scanning sensor is a laser scanning sensor, the distance between the scanning measurement path and the motion trajectory of the measurement point may be set according to the requirement, and is not particularly limited herein.
Finally, step S3 is executed to perform vectorization on the one-dimensional scalar quantity information according to the measurement direction information of the actual contour point of the measured feature corresponding to the measurement point. Because the one-dimensional scalar quantity information is used for representing the comprehensive variation of the actual contour point of the measured characteristic relative to the theoretical contour point, the vectorization of the one-dimensional scalar quantity information is carried out to determine the direction information corresponding to the one-dimensional scalar quantity information, namely determining the variation direction for the comprehensive variation. Here, the measurement direction information of the actual contour point of the measured feature corresponding to the measurement point is the direction information corresponding to the one-dimensional scalar information.
Therefore, the position information, the one-dimensional scalar information and the corresponding direction information of the measuring point can be determined, and the three types of information are integrated to obtain seven-dimensional information as the position information is in a three-dimensional coordinate form, and the seven-dimensional information can be output as a vectorization result.
The vectorization method for the measured data of the unidirectional scanning sensor provided by the embodiment of the invention can realize the vectorization of the measured data of the unidirectional scanning sensor, improve the applicability and the measurement precision of the unidirectional scanning sensor, solve the problems of insufficient applicability, poor precision and the like in the application of the unidirectional scanning sensor, promote the application and the advantage exertion of the unidirectional scanning sensor in practice and have very practical application value.
On the basis of the foregoing embodiment, the vectorization method for measuring data of a unidirectional scanning sensor provided in an embodiment of the present invention is a method for determining measurement direction information of an actual contour point of a measured feature corresponding to a measurement point based on position information of the theoretical contour point, position information of the measurement point, and measurement direction information of the theoretical contour point, including:
determining a target contour point interval which is closest to the measuring point on the scanning measuring path based on the position information of the theoretical contour point and the position information of the measuring point, wherein the interval end points of the target contour point interval are two adjacent theoretical contour points;
determining interpolation parameters based on the position information of the target contour point closest to the measuring point in the target contour point interval and the position information of the interval endpoint;
and performing interpolation calculation on the measurement direction information of the interval endpoint based on the interpolation parameters to determine the measurement direction information of the actual contour point.
Specifically, in the embodiment of the present invention, when determining the measurement direction information of the actual contour point of the measured feature corresponding to the measurement point, a target contour point interval closest to the measurement point on the scanning measurement path may be determined according to the position information of the theoretical contour point and the position information of the measurement point, where the interval end points of the target contour point interval are two adjacent theoretical contour points. The target contour point interval may be equivalent to a line segment formed by interval endpoints, so that determining the target contour point interval closest to the measurement point on the scanning measurement path may be equivalent to determining the line segment closest to the measurement point on the scanning measurement path, which may be implemented by calculating the distance from the point to the line segment, and is not specifically limited herein.
Then, the position information of the target contour point closest to the measuring point in the target contour point interval is determined, namely, the measuring point is projected to the target contour point interval, the projected point is the target contour point closest to the measuring point in the target contour point interval, and the target contour point is a theoretical contour point. The position information of the target contour point may be determined by a projection relationship, and is not particularly limited herein. And then, determining an interpolation parameter by combining the position information of the target contour point and the position information of the interval endpoint of the target contour point interval.
As shown in FIG. 2, p2iFor the measuring point, a measuring point p2 is setiNearest target wheelThe contour point is A, and the position information is
And the interval end points of the target contour point interval are respectively p1j、p1j+1The position information thereof is respectively
、
. Wherein, p1jRepresenting the jth theoretical contour point on the scan measurement path, p1j+1Represents the j +1 th theoretical contour point on the scanning measuring path. The interpolation parameters can be expressed as:
wherein the content of the first and second substances,
are interpolation parameters.
In fig. 2, three curves from top to bottom are respectively represented as a motion trajectory of a measurement point, an actual contour formed by actual contour points of a measured feature, and a theoretical contour formed by theoretical contour points of the measured feature. In fig. 2, 1 is a measurement carrying device, 2 is a probe of which the unidirectional scanning sensor is a contact scanning sensor, and d is one-dimensional scalar information obtained by scanning and measuring the unidirectional scanning sensor, which can be understood as an offset value of an actual contour point B relative to a theoretical contour point a.
And finally, carrying out interpolation calculation on the measurement direction information of the interval endpoint by combining the interpolation parameters, and determining the measurement direction information of the actual contour point. Here, a linear interpolation calculation method may be adopted, that is, the measurement direction information of the actual contour point may be represented by the following formula:
wherein the content of the first and second substances,
to measure point p2iThe measurement direction information of the actual contour point B of the corresponding measured feature,
is interval endpoint p1jThe information of the direction of measurement of (2),
is interval endpoint p1j+1The measurement direction information of (1). p2 represents the motion trace of the measurement point of the unidirectional scanning sensor.
In the embodiment of the invention, the method for determining the measurement direction information of the actual contour point of the measured characteristic corresponding to the measurement point can be simplified and the vectorization efficiency is improved by determining the interpolation parameter and determining the measurement direction information of the actual contour point of the measured characteristic by adopting an interpolation calculation method.
On the basis of the foregoing embodiment, the vectorization method for measuring data of a unidirectional scanning sensor provided in an embodiment of the present invention is a method for determining a target contour point interval closest to a measurement point on a scanning measurement path based on position information of the theoretical contour point and position information of the measurement point, including:
determining line segment information of a contour point interval between every two adjacent theoretical contour points based on the position information of each theoretical contour point on the scanning measurement path;
and calculating the distance between the measuring point and each contour point interval based on the position information of the measuring point and the information of each line segment, and determining the target contour point interval.
Specifically, in the embodiment of the present invention, when determining the target contour point interval, the line segment information of the contour point interval between every two adjacent theoretical contour points may be determined according to the position information of each theoretical contour point on the scanning measurement path, where the line segment information represents a line segment obtained by connecting the two adjacent theoretical contour points, and the line segment information may be an equation representing the line segment and may be determined by using the position information of the two adjacent theoretical contour points and combining line segment constraint conditions.
Then, the distance between the measuring point and each contour point interval is calculated according to the position information of the measuring point and the information of each line segment. Here, the distance between the measurement point and the line segment corresponding to each contour point section may be determined by a point-to-line segment distance calculation method, and the distance between the measurement point and the line segment corresponding to each contour point section is equivalent to the distance between the measurement point and each contour point section. Finally, the distances corresponding to the contour point intervals can be sorted according to the size, and the contour point interval corresponding to the minimum distance is the target contour point interval.
In the embodiment of the invention, the determination of the target contour point interval is realized by determining the distance between the point and the line segment, and the method is simple and easy to implement.
On the basis of the foregoing embodiment, the vectorization method for measured data of a unidirectional scanning sensor provided in the embodiment of the present invention performs vectorization on the one-dimensional scalar information based on the measured direction information of the actual contour point, and then includes:
and determining the position information of the actual contour point based on the vectorization result.
Specifically, in the embodiment of the present invention, after vectorization, the position information of the actual contour point of the measured feature corresponding to the measurement point may also be determined by using a vectorization result. At this time, the one-dimensional scalar quantity information and the corresponding direction information are known, so that the position information of the actual contour point of the measured feature corresponding to the measuring point can be directly determined, and the determined position information of the actual contour point of the measured feature corresponding to the measuring point can be ensured to be more accurate.
On the basis of the foregoing embodiment, in the vectorization method for measured data of a unidirectional scanning sensor provided in the embodiment of the present invention, when determining the position information of the actual contour point of the measured feature corresponding to the measurement point, the position information of the measurement point may be shifted by a length corresponding to the one-dimensional scalar information along the measurement direction information of the actual contour point, so as to obtain the position information of the actual contour point of the measured feature corresponding to the measurement point.
In the embodiment of the invention, the position information of the actual contour point is determined in a mode of deviation along the direction, so that the determination of the position information of the actual contour point is more convenient.
On the basis of the foregoing embodiment, the vectorization method for measured data of a unidirectional scanning sensor provided in the embodiment of the present invention further includes:
determining real-time position information of a measuring point on the unidirectional scanning sensor based on the measurement bearing equipment;
and carrying out time synchronization on the real-time position information and the one-dimensional scalar information, and determining the position information of the measuring point when the unidirectional scanning sensor scans and measures.
Specifically, in the embodiment of the present invention, when determining the sensor position information during the scanning measurement of the unidirectional scanning sensor, the real-time position information of the measurement point on the unidirectional scanning sensor may be determined by the measurement carrying device. Since the real-time position information is directly measured by the executing subject, and the one-dimensional scalar information is scanned and measured by the unidirectional scanning sensor and fed back to the executing subject, the two may have a time difference. Therefore, in the embodiment of the invention, the real-time position information of the measuring point is time-synchronized with the one-dimensional scalar information obtained by scanning and measuring of the unidirectional scanning sensor, so that the position information of the measuring point when the unidirectional scanning sensor scans and measures can be determined.
When time synchronization is performed, hardware synchronization may be performed, that is, the measurement bearer device obtains time-related information of the unidirectional scanning sensor, such as transmission duration, transmission delay duration, and the like, so as to implement synchronization.
In the embodiment of the invention, the measurement bearing equipment can accurately master the position information of the measurement point when the unidirectional scanning sensor scans and measures through time synchronization.
As shown in fig. 3, on the basis of the foregoing embodiment, an embodiment of the present invention provides a vectorization apparatus for measuring data by a unidirectional scanning sensor, including:
the information acquisition module 31 is configured to acquire scanning measurement path information of a measured feature on a measured workpiece by a unidirectional scanning sensor, and extract position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information;
a measurement information determining module 32, configured to obtain one-dimensional scalar quantity information obtained by scanning and measuring by the unidirectional scanning sensor according to the scanning and measuring path and position information of a measurement point when the unidirectional scanning sensor performs scanning and measuring, and determine, based on the position information of the theoretical contour point, the position information of the measurement point, and the measurement direction information of the theoretical contour point, measurement direction information of an actual contour point of the measured feature corresponding to the measurement point;
a vectorization module 33, configured to vectorize the one-dimensional scalar information based on the measurement direction information of the actual contour point.
On the basis of the foregoing embodiment, in the vectorization device of measurement data of a unidirectional scanning sensor provided in the embodiment of the present invention, the measurement information determining module is configured to:
determining a target contour point interval which is closest to the measuring point on the scanning measuring path based on the position information of the theoretical contour point and the position information of the measuring point, wherein the interval end points of the target contour point interval are two adjacent theoretical contour points;
determining interpolation parameters based on the position information of the target contour point closest to the measuring point in the target contour point interval and the position information of the interval endpoint;
and performing interpolation calculation on the measurement direction information of the interval endpoint based on the interpolation parameters to determine the measurement direction information of the actual contour point.
On the basis of the foregoing embodiment, in the vectorization device of measurement data of a unidirectional scanning sensor provided in the embodiment of the present invention, the measurement information determining module is specifically configured to:
determining line segment information of a contour point interval between every two adjacent theoretical contour points based on the position information of each theoretical contour point on the scanning measurement path;
and calculating the distance between the measuring point and each contour point interval based on the position information of the measuring point and the information of each line segment, and determining the target contour point interval.
On the basis of the foregoing embodiment, the vectorization apparatus for measuring data by using a unidirectional scanning sensor according to an embodiment of the present invention further includes:
and the actual contour point position determining module is used for determining the position information of the actual contour point based on the vectorization result.
On the basis of the foregoing embodiment, in the vectorization device for measured data of a unidirectional scanning sensor provided in the embodiment of the present invention, the actual contour point position determining module is configured to:
and shifting the position information of the measuring point by the length corresponding to the one-dimensional scalar information along the measuring direction information of the actual contour point, and determining the position information of the actual contour point.
On the basis of the foregoing embodiment, the vectorization apparatus for measured data of a unidirectional scanning sensor provided in the embodiment of the present invention further includes a time synchronization module, configured to:
determining real-time position information of a measuring point on the unidirectional scanning sensor based on the measurement bearing equipment;
and carrying out time synchronization on the real-time position information and the one-dimensional scalar information, and determining the position information of the measuring point when the unidirectional scanning sensor scans and measures.
On the basis of the foregoing embodiments, the one-directional scanning sensor measurement data vectorization apparatus provided in the embodiments of the present invention includes a non-contact scanning sensor and a contact scanning sensor.
Specifically, the functions of the modules in the unidirectional scanning sensor measurement data vectoring apparatus provided in the embodiment of the present invention correspond to the operation flows of the steps in the embodiments of the methods one to one, and the implementation effects are also consistent.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a Processor (Processor)410, a communication Interface 420, a Memory (Memory)430 and a communication bus 440, wherein the Processor 410, the communication Interface 420 and the Memory 430 are communicated with each other via the communication bus 440. The processor 410 may invoke logic instructions in the memory 430 to perform the unidirectional scanning sensor measurement data vectoring method provided in the various embodiments described above, the method comprising: acquiring scanning measurement path information of a measured feature on a measured workpiece by a unidirectional scanning sensor, and extracting position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information; acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measuring point when the unidirectional scanning sensor scans and measures, and determining the measuring direction information of the actual contour point of the measured feature corresponding to the measuring point based on the position information of the theoretical contour point, the position information of the measuring point and the measuring direction information of the theoretical contour point; vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the vectorization method for the one-directional scanning sensor measurement data provided by the above methods, the method comprising: acquiring scanning measurement path information of a measured feature on a measured workpiece by a unidirectional scanning sensor, and extracting position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information; acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measuring point when the unidirectional scanning sensor scans and measures, and determining the measuring direction information of the actual contour point of the measured feature corresponding to the measuring point based on the position information of the theoretical contour point, the position information of the measuring point and the measuring direction information of the theoretical contour point; vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements a method for vectorizing one-way scanning sensor measurement data provided by the above methods, the method comprising: acquiring scanning measurement path information of a measured feature on a measured workpiece by a unidirectional scanning sensor, and extracting position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information; acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measuring point when the unidirectional scanning sensor scans and measures, and determining the measuring direction information of the actual contour point of the measured feature corresponding to the measuring point based on the position information of the theoretical contour point, the position information of the measuring point and the measuring direction information of the theoretical contour point; vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A vectorization method for measuring data of a unidirectional scanning sensor is characterized by comprising the following steps:
acquiring scanning measurement path information of a measured feature on a measured workpiece by a unidirectional scanning sensor, and extracting position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information;
acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measuring point when the unidirectional scanning sensor scans and measures, and determining the measuring direction information of the actual contour point of the measured feature corresponding to the measuring point based on the position information of the theoretical contour point, the position information of the measuring point and the measuring direction information of the theoretical contour point;
vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
2. The vectorization method of measurement data of a one-directional scanning sensor according to claim 1, wherein said determining the measurement direction information of the actual contour point of the measured feature corresponding to the measurement point based on the position information of the theoretical contour point, the position information of the measurement point, and the measurement direction information of the theoretical contour point comprises:
determining a target contour point interval which is closest to the measuring point on the scanning measuring path based on the position information of the theoretical contour point and the position information of the measuring point, wherein the interval end points of the target contour point interval are two adjacent theoretical contour points;
determining interpolation parameters based on the position information of the target contour point closest to the measuring point in the target contour point interval and the position information of the interval endpoint;
and performing interpolation calculation on the measurement direction information of the interval endpoint based on the interpolation parameters to determine the measurement direction information of the actual contour point.
3. The vectorization method of measurement data of a unidirectional scanning sensor according to claim 2, wherein said determining a target contour point interval closest to the measurement point on the scanning measurement path based on the position information of the theoretical contour point and the position information of the measurement point comprises:
determining line segment information of a contour point interval between every two adjacent theoretical contour points based on the position information of each theoretical contour point on the scanning measurement path;
and calculating the distance between the measuring point and each contour point interval based on the position information of the measuring point and the information of each line segment, and determining the target contour point interval.
4. The vectorization method according to claim 1, wherein the vectorization of the one-dimensional scalar information based on the measurement direction information of the actual contour points comprises:
and determining the position information of the actual contour point based on the vectorization result.
5. The vectorization method of one-directional scanning sensor measurement data according to claim 4, wherein said determining the position information of the actual contour points based on the vectorization result comprises:
and shifting the position information of the measuring point by the length corresponding to the one-dimensional scalar information along the measuring direction information of the actual contour point, and determining the position information of the actual contour point.
6. The vectorization method of one directional scanning sensor measurement data according to any of claims 1-5, further comprising:
determining real-time position information of a measuring point on the unidirectional scanning sensor based on the measurement bearing equipment;
and carrying out time synchronization on the real-time position information and the one-dimensional scalar information, and determining the position information of the measuring point when the unidirectional scanning sensor scans and measures.
7. The vectorization method of one directional scanning sensor measurement data according to any of the claims 1 to 5, wherein said one directional scanning sensors comprise non-contact scanning sensors and contact scanning sensors.
8. A unidirectional scanning sensor measurement data vectorization apparatus, comprising:
the information acquisition module is used for acquiring scanning measurement path information of a measured feature on a measured workpiece by the unidirectional scanning sensor and extracting position information of a theoretical contour point on a scanning measurement path and measurement direction information of the theoretical contour point from the scanning measurement path information;
the measurement information determining module is used for acquiring one-dimensional scalar quantity information obtained by scanning and measuring the unidirectional scanning sensor according to the scanning and measuring path and position information of a measurement point when the unidirectional scanning sensor scans and measures, and determining measurement direction information of an actual contour point of the measured feature corresponding to the measurement point based on the position information of the theoretical contour point, the position information of the measurement point and the measurement direction information of the theoretical contour point;
and the vectorization module is used for vectorizing the one-dimensional scalar information based on the measurement direction information of the actual contour point.
9. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements a method for vectoring of measurement data for a unidirectional scanning sensor according to any of claims 1 to 7.
10. A non-transitory computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the method of vectoring unidirectional scanning sensor measurement data according to any of claims 1 to 7.
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