CN113968084A - Calibration method, system, computer device and storage medium for label printer - Google Patents
Calibration method, system, computer device and storage medium for label printer Download PDFInfo
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- CN113968084A CN113968084A CN202111133738.1A CN202111133738A CN113968084A CN 113968084 A CN113968084 A CN 113968084A CN 202111133738 A CN202111133738 A CN 202111133738A CN 113968084 A CN113968084 A CN 113968084A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
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Abstract
The application relates to a calibration method, a calibration device, a computer device and a storage medium for a label printer. The method comprises the steps of marking a plurality of marking distances of each bearing in a marking printer after the marking printer marks a cable for a plurality of times, obtaining a plurality of measuring distances obtained after a laser range finder measures the marking distances on the cable for a plurality of times, and calibrating bearing parameters in the marking printer according to the plurality of marking distances and the plurality of measuring distances of each bearing. In the calibration method, the laser range finder can accurately measure the mark distance on the cable, so that the mark distance of the calibrated mark printer can be infinitely close to the measurement distance of the laser range finder according to the bearing parameter in the calibration mark printer of the measurement distance of the laser range finder, the problem that the mark distance of the mark printer is inconsistent with the actual distance due to the influence of the environment on the cable is solved, and the accuracy of marking on the cable by the mark printer is greatly improved.
Description
Technical Field
The present application relates to the field of power electronic control technologies, and in particular, to a calibration method and system for a label printer, a computer device, and a storage medium.
Background
In the field of electric power control, it is generally necessary to mark a cable sheath in an electric power device to provide cable service personnel or maintenance personnel with information about usage, length, trajectory, and the like.
Currently, marking is typically performed automatically on the separation distance of the cable jacket using a marking printer. The existing mark printer is internally provided with a plurality of counting bearings, and in practical application, the marking distance of the mark printer can be set in a mode of setting the number of turns of each counting bearing or the counting value of each counting bearing, so that the mark printer can carry out marking work of corresponding marks on a cable according to the marking distance.
However, since the cable is usually exposed to air, it is very easy to be affected by environmental humidity, rainy weather, etc. to cause the friction between the cable and the dragging motor to change, so that in the process of marking the cable, the marking distance of the marking printer does not accord with the actual moving distance of the cable, resulting in the problem of inaccurate marking of the marking printer.
Disclosure of Invention
In view of the above, it is necessary to provide a calibration method, a system, a computer device and a storage medium for a marking printer capable of improving marking accuracy.
In a first aspect, a method of calibrating a marking printer, the method comprising:
obtaining a plurality of marking distances of each bearing in a marking printer after the marking printer marks a cable for a plurality of times;
obtaining a plurality of measuring distances obtained after the laser range finder measures the marking distance on the cable for a plurality of times;
calibrating bearing parameters in the marking printer based on the plurality of marking distances and the plurality of measured distances for each bearing.
In one embodiment, the calibrating the bearing parameters in the marking printer according to the plurality of marking distances and the plurality of measuring distances of each bearing comprises:
performing statistical operation on the plurality of marked distances of each bearing to obtain the average distance and the standard deviation of the plurality of marked distances of each bearing;
calculating a correction coefficient corresponding to each marking distance of each bearing according to the plurality of marking distances of each bearing and the average distance and standard deviation of the plurality of marking distances of each bearing;
correcting each marked distance of each bearing by using a correction coefficient corresponding to each marked distance of each bearing to obtain a calibration distance of each bearing;
calibrating the bearing parameters according to the calibration distance of each bearing and the plurality of measurement distances.
In one embodiment, the calibrating the bearing parameter according to the calibration distance of each bearing and the plurality of measurement distances includes:
determining a reference distance from the plurality of measured distances;
if the distance difference between the calibration distance of each bearing and the reference distance is smaller than a preset threshold value, calibrating the bearing parameters of each bearing by using the calibration distance of each bearing;
and if the distance difference between the calibration distance of each bearing and the reference distance is not smaller than a preset threshold value, returning to execute the step of obtaining the plurality of marked distances of each bearing in the marking printer after the marking of the cable for a plurality of times by the marking printer.
In one embodiment, the calculating a correction coefficient corresponding to each marked distance of each bearing according to the plurality of marked distances of each bearing, the average distance of the plurality of marked distances of each bearing, and the standard deviation includes:
if the current marking distance of the current bearing is within a first preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing based on a first correction mode;
if the current marking distance of the current bearing is within a second preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing based on a second correction mode;
if the current marking distance of the current bearing is within a third preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing based on a third correction mode;
and if the current marking distance of the current bearing is within a fourth preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of the plurality of marking distances of the current bearing based on a fourth correction mode.
In a second aspect, a calibration system for a label printer, the apparatus comprising:
the device comprises a mark printer, at least one laser range finder, calibration equipment and a cable, wherein the calibration equipment is respectively connected with the laser range finder and the mark printer; the cable passes through the label printer;
the marking printer is used for marking the cable for multiple times and outputting a plurality of marking distances of each bearing in the marking printer;
the laser range finder is used for measuring the marked distance on the cable for multiple times to obtain multiple measuring distances;
the calibration apparatus is for performing a calibration method for a marking printer as claimed in the first aspect.
In one embodiment, the calibration system further comprises: a motor for moving the cable to the marking printer at a preset speed for marking.
In one embodiment, the cable is a loop cable and passes through both the motor and the label printer, and the motor and the label printer are disposed at different positions of the loop cable.
In one embodiment, if the calibration system includes two laser rangefinders, the two laser rangefinders are respectively disposed on both sides of the mark printer for measurement.
In a third aspect, a computer device comprises a memory storing a computer program and a processor implementing the method of the first aspect when the processor executes the computer program.
In a fourth aspect, a computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the method of the first aspect described above.
According to the calibration method, the calibration device, the computer equipment and the storage medium of the marking printer, the marking distance of each bearing in the marking printer is marked after the marking printer marks the cable for multiple times, the measuring distances obtained after the laser range finder measures the marking distance on the cable for multiple times are obtained, and the bearing parameters in the marking printer are calibrated according to the marking distances and the measuring distances of each bearing. In the calibration method, the laser range finder can accurately measure the mark distance on the cable, so that the bearing parameters in the mark printer are calibrated according to the measurement distance of the laser range finder, the mark distance of the calibrated mark printer can be infinitely close to the measurement distance of the laser range finder, which is equivalent to the fact that the mark distance of the mark printer is infinitely close to the actual distance between marks on the cable, the problem that the mark distance of the mark printer is not consistent with the actual distance due to the influence of the environment on the cable is solved, and the marking accuracy of the mark printer on the cable is greatly improved.
Drawings
FIG. 1 is a diagram of an environment in which the calibration method for a marking printer may be used in one embodiment;
FIG. 2 is a schematic flow chart diagram illustrating a method for calibrating a marking printer in one embodiment;
FIG. 2A is a schematic diagram of a marking printer in one embodiment;
FIG. 3 is a flowchart illustrating an implementation manner of S103 in the embodiment of FIG. 2;
FIG. 4 is a flowchart illustrating an implementation manner of S204 in the embodiment of FIG. 3;
FIG. 5 is a schematic flow chart diagram illustrating a method for calibrating a marking printer in one embodiment;
FIG. 6 is a schematic diagram of a calibration system for a marking printer in one embodiment;
FIG. 7 is a schematic diagram of a calibration system for a marking printer in one embodiment;
FIG. 8 is a block diagram of the structure of a marking printer calibration apparatus in one embodiment;
FIG. 9 is a block diagram of the structure of a marking printer calibration apparatus in one embodiment;
FIG. 10 is a block diagram of the structure of a marking printer calibration apparatus in one embodiment;
FIG. 11 is a block diagram of the structure of a marking printer calibration apparatus in one embodiment;
FIG. 12 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The calibration method of the mark printer provided by the application can be applied to the calibration system shown in FIG. 1. The calibration device 106 is connected to the laser rangefinder 104 and the marking printer 102, respectively; the cable 110 passes through the label printer 102 and the power draw motor 108. The power supply dragging motor 108 is a power device, and can drag the annular cable to move at a constant speed to provide power for the sliding of the annular cable; the laser rangefinder 104 is a ranging device that can be used to measure the sliding distance of the looped cable; the mark printer 102 is a labeling device that can automatically print a mark on a cable according to a preset mark distance by the count value of a counter; the calibration device 106 can calibrate the marking distance of the marking printer based on the sliding distance of the cable. The calibration device 106 may be, but is not limited to, various devices such as a personal computer, a notebook computer, a smart phone, and a tablet computer; the laser rangefinder 104 may be any type of laser rangefinder device, such as, but not limited to, an infrared laser rangefinder, and the like.
It will be appreciated by those skilled in the art that the configuration shown in fig. 1 is a block diagram of only a portion of the configuration relevant to the present application and does not constitute a limitation on the calibration system to which the present application is applied, and that a particular calibration system may include more or less components than shown in the figures, or combine certain components, or have a different arrangement of components.
In the field of electric control, marking printers are generally used to automatically mark the spacing distance between cable sheaths. The existing mark printer is internally provided with a plurality of counting bearings, and in practical application, the marking distance of the mark printer can be set in a mode of setting the number of turns of each counting bearing or the counting value of each counting bearing, so that the mark printer can carry out marking work of corresponding marks on a cable according to the marking distance. However, since the cable is usually exposed to air and is very susceptible to environmental moisture, rainy weather and the like, which causes a change in friction between the cable and the dragging motor, so that in the process of marking the cable, the marking distance of the marking printer does not coincide with the actual moving distance of the cable, which results in an inaccurate marking of the marking printer.
In one embodiment, as shown in fig. 2, there is provided a calibration method of a label printer, which is described by taking the method as an example of being applied to the calibration apparatus in fig. 1, and includes the following steps:
s101, acquiring a plurality of marking distances of each bearing in the marking printer after the marking printer marks the cable for a plurality of times.
The mark printer is a marking device, and can automatically print marks on the cable according to a preset mark distance through the counting value of the counter. As shown in fig. 2A, the label printer is provided with a plurality of bearings (4 bearings are shown), and the distance between the printing dot 1 and the printing dot 2 is a set value of the label distance, which can be predetermined by a count value inside the label printer or recorded by the number of rotation turns of each bearing. When the mark printer shown in fig. 2A is used for printing a mark on a cable, the cable can be dragged by hand or by a machine to slide at a constant speed, and the mark printer is started to print on the cable according to a set value of a mark distance, so that the marking of the cable is completed.
In this embodiment, before needing to mark the cable, can calibrate the mark printer earlier, make the later stage when using the mark to print the cable and mark, can carry out accurate mark. Specifically, during calibration, the cable may be moved at a constant speed by using a motor, or manually moved at a constant speed, and the marking printer is started to mark the cable according to a preset marking distance. When the cable stops moving, after the label printer finishes marking on the cable for a plurality of times, each bearing in the label printer rotates for corresponding turns. Afterwards, calibration equipment can obtain every bearing pivoted number of turns of mark printer inside from the mark printer, and the mark is printed and also can be sent every bearing pivoted number of turns for calibration equipment after the mark is accomplished, and calibration equipment can calculate a plurality of mark distances that obtain every bearing of mark printer inside according to the number of turns of rotation of every bearing after obtaining every bearing pivoted number of turns of printer inside.
Optionally, the calibration device may calculate a plurality of marking distances for each bearing inside the marking printer according to the number of rotations of each bearing by the following relation (1):
Dn＝Cn×Ln (1)；
wherein, CnIs the number of revolutions of the nth counting bearing, LnIs the bearing circumference of the nth count bearing, DnThe nth count bearing marks the distance each time.
It should be noted that, in the actual calibration process, the cables may be formed into a ring cable, and perform uniform sliding to complete calibration, such as the ring cable shown in fig. 1; the cable can also be directly and linearly slid at a constant speed to complete calibration, and the method is not limited in the above.
And S102, obtaining a plurality of measuring distances obtained after the laser range finder measures the marked distance on the cable for a plurality of times.
The laser distance meter is used for measuring the sliding speed of the cable in unit time and can also be used for measuring the sliding distance of the cable in unit time. The mark spacing is the distance between every two marks on the cable.
In this embodiment, one laser range finder may be used to measure the sliding speed of the cable, or a plurality of laser range finders may be used to measure the sliding speed of the cable at the same time, which is not limited herein. In the actual calibration process, when the laser range finder is used for measuring the sliding speed of the cable in unit time, the laser range finder can send the measured sliding speed to the calibration equipment, and the calibration equipment calculates the measurement distance of the laser range finder based on the sliding speed of the cable; optionally, when the laser range finder is used for measuring the sliding distance of the cable, the laser range finder may directly send the sliding distance of the cable to the calibration device, and the calibration device directly uses the sliding distance of the cable as the measurement distance of the laser range finder. It will be appreciated that to improve the accuracy of the calibration, the laser rangefinder may measure the spacing between marks on the cable a plurality of times to obtain a plurality of measured distances, so that the mark printer may then be accurately calibrated based on the plurality of measured distances. It should be noted that the laser range finder may actively send the measurement result to the calibration device, and the calibration device may also actively obtain the measurement result from the laser range finder, which is not limited herein.
S103, calibrating the bearing parameters in the mark printer according to the plurality of mark distances and the plurality of measuring distances of each bearing.
The bearing parameters may include the count value of a counter inside the marking printer, and may also include the number of rotations of each bearing inside the marking printer.
In this embodiment, when the calibration device obtains the plurality of marking distances of each bearing inside the marking printer, the calibration device may further calculate a corrected bearing parameter of each bearing according to the plurality of marking distances of each bearing, directly use the corrected bearing parameter of each bearing as the bearing parameter of each bearing in the current marking printer, determine a new marking distance of each bearing inside the marking printer according to the corrected bearing parameter of each bearing, then compare the new marking distance of each bearing with the measured distance of the laser range finder, determine whether the corrected bearing parameter is accurate according to the comparison result, and if so, determine the corrected bearing parameter as the bearing parameter of the calibrated marking printer; and if the corrected bearing parameters are not accurate, acquiring the corrected bearing parameters again until the corrected bearing parameters are accurate.
It should be noted that the calibration device may determine the count value of each bearing when determining the corrected bearing parameter for each bearing inside the marking printer, and may also determine the number of rotations of each bearing, which is determined according to the control structure of the actual marking printer. After the calibration equipment calibrates the bearing parameters of each bearing in the marking printer, the calibrated marking printer can be used for marking the cable, and during specific marking, the marking printer can determine the marking distance according to the calibrated bearing parameters and mark any mark on the cable according to the marking distance.
According to the calibration method of the marking printer, the marking distance of each bearing in the marking printer is marked after the marking printer marks the cable for multiple times, the measuring distances obtained after the laser range finder measures the marking distance on the cable for multiple times are obtained, and the bearing parameters in the marking printer are calibrated according to the marking distances and the measuring distances of each bearing. In the calibration method, the laser range finder can accurately measure the mark distance on the cable, so that the bearing parameters in the mark printer are calibrated according to the measurement distance of the laser range finder, the mark distance of the calibrated mark printer can be infinitely close to the measurement distance of the laser range finder, which is equivalent to the fact that the mark distance of the mark printer is infinitely close to the actual distance between marks on the cable, the problem that the mark distance of the mark printer is not consistent with the actual distance due to the influence of the environment on the cable is solved, and the marking accuracy of the mark printer on the cable is greatly improved.
In an embodiment, a specific implementation manner of the above S103 is provided, and as shown in fig. 3, the above S103 "calibrating the bearing parameters in the mark printer according to the plurality of mark distances and the plurality of measured distances of each bearing" includes:
s201, carrying out statistical operation on the plurality of marked distances of each bearing to obtain the average distance and the standard deviation of the plurality of marked distances of each bearing.
In this embodiment, when the calibration device obtains the plurality of marked distances of each bearing inside the marking printer based on the foregoing steps, since the plurality of marked distances of each bearing are the marked distances recorded for each bearing after marking the cable for a plurality of times, the calibration device may perform statistical operation on the plurality of marked distances of each bearing to obtain an average distance and a standard deviation of the plurality of marked distances of each bearing, so as to evaluate the marked distance of each bearing using the two parameters.
Alternatively, the calibration device may calculate the average distance of each bearing using the following relation (2):
wherein D isavMean distance, D, representing distances of a plurality of marksnIndicating the distance of the mark for the nth bearing and n indicating the number of bearings in the mark printer.
Alternatively, the calibration device may calculate the standard deviation of each bearing using the following relation (3):
wherein D isavMean distance, D, representing distances of a plurality of marksnIndicating the index distance of the nth bearing; dsThe standard deviation is indicated.
S202, calculating and obtaining a correction coefficient corresponding to each marking distance of each bearing according to the plurality of marking distances of each bearing and the average distance and standard deviation of the plurality of marking distances of each bearing.
The calibration device may use different calculation methods according to different value ranges where each marked distance is located, and calculate a correction coefficient corresponding to each marked distance of each bearing according to a plurality of marked distances, an average distance, and a standard deviation of each bearing, which introduces four calculation methods, for example:
the first method comprises the following steps: and if the current marking distance of the current bearing is within a first preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of the plurality of marking distances of the current bearing based on a first correction mode.
The first preset range may be determined by the calibration device in advance according to actual calibration requirements, for example, the first preset range may take the following values: the current mark distance is less than a range of 10 meters. The first correction mode is a method for calculating a correction coefficient according to the embodiment when the current mark distance is within the first preset range, and the correction coefficient can be predetermined by the calibration device.
Optionally, if the current mark distance is smaller than the range of 10 meters, the first correction mode may be implemented by using the following relation (4):
in the above formula, λ represents a correction coefficient, DavMean distance, D, representing distances of a plurality of markssDenotes the standard deviation, DnIndicating the index distance for the nth bearing.
And the second method comprises the following steps: and if the current marking distance of the current bearing is within a second preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of the plurality of marking distances of the current bearing based on a second correction mode.
Wherein, the second preset range can be determined by the calibration equipment according to the actual calibration requirement in advance, for example, the second preset range can be valued as: the current mark distance is greater than 10 meters and less than 10 meters. The second correction mode is a method for calculating a correction coefficient according to the second preset range of the current mark distance, and the method can be predetermined by the calibration device.
Optionally, if the current mark distance is greater than 10 meters and less than 50 meters, the second correction mode may be implemented by using the following relation (5):
in the above formula, λ represents a correction coefficient, DavMean distance, D, representing distances of a plurality of markssDenotes the standard deviation, DnIndicating the index distance for the nth bearing.
And the third is that: and if the current marking distance of the current bearing is within a third preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of the plurality of marking distances of the current bearing based on a third correction mode.
The third preset range may be determined by the calibration device in advance according to actual calibration requirements, for example, the third preset range may take the following values: the current mark distance is greater than a range of 50 meters and less than 200 meters. The third correction mode is a method for calculating a correction coefficient according to the third preset range of the current mark distance, and may be predetermined by the calibration device.
Optionally, if the current mark distance is greater than the range of 50 meters and less than 200 meters, the third correction mode may be implemented by using the following relation (6):
in the above formula, λ represents a correction coefficient, DavMean distance, D, representing distances of a plurality of markssDenotes the standard deviation, DnIndicating the index distance for the nth bearing.
And fourthly: and if the current marking distance of the current bearing is within a fourth preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of the plurality of marking distances of the current bearing based on a fourth correction mode.
The fourth preset range may be determined by the calibration device in advance according to actual calibration requirements, for example, the fourth preset range may take the following values: the current mark distance is greater than a range of 200 meters. The fourth correction mode is a method for calculating a correction coefficient according to the specification when the current mark distance is within a fourth preset range, and the correction coefficient may be predetermined by the calibration device.
Optionally, if the current mark distance is greater than the range of 200 meters, the fourth correction mode may be implemented by using the following relation (7):
in the above formula, λ represents a correction coefficient, DavMean distance, D, representing distances of a plurality of markssDenotes the standard deviation, DnIndicating the index distance for the nth bearing.
S203, correcting each marked distance of each bearing by using the correction coefficient corresponding to each marked distance of each bearing to obtain the calibration distance of each bearing.
After the calibration device obtains the correction coefficient corresponding to each mark distance of each bearing in the mark printer, each mark distance of each bearing can be corrected, and when the correction is specifically performed, the following relation (8) can be adopted for correction:
Dmij＝λij×Dij (8)；
wherein i represents the serial number of the bearing, j represents the serial number of the marking distance of each bearing, and Dij represents the marking distance of the jth marking of the ith bearing; λ ij represents a correction coefficient of a mark distance of a jth mark of the ith bearing; dmijAnd indicating the mark distance of the j mark of the ith bearing after correction.
When the calibration apparatus calculates the plurality of corrected mark distances for each bearing based on the above method, an average of the plurality of corrected mark distances for each bearing may be further calculated, and the calculation result may be determined as the calibration distance for each bearing. Optionally, the calibration device may screen out a marked distance meeting a preset condition from the plurality of corrected marked distances, and determine the marked distance as the calibration distance of each bearing, where the preset condition may be that a difference between the marked distance and the measured distance is smaller than a threshold.
And S204, calibrating the bearing parameters according to the calibration distance and the plurality of measurement distances of each bearing.
When the calibration distance of each bearing is calculated by the calibration device, the marking distance of the marking printer can be further calculated, that is, the average value of the calibration distances of all the bearings inside the marking printer is used as the marking distance of the marking printer. Then comparing the marking distance of the marking printer with any measuring distance obtained by measuring of the laser range finder, and if the marking distance of the marking printer is close to the measuring distance, calibrating the bearing parameters of each bearing by using the calibration distance of each bearing corresponding to the marking distance; if the marking distance of the marking printer is far away from the measured distance, the marking on the cable is remeasured, the calibrated distance of each bearing inside the marking printer is recalculated, and the laser rangefinder remeasures the measured distance until the marking distance of the marking printer approaches the measured distance.
Optionally, an implementation manner of the foregoing S204 is provided, and as shown in fig. 4, the foregoing 204 "calibrating the bearing parameter according to the calibration distance and the plurality of measurement distances of each bearing" includes:
s301, determining a reference distance according to the plurality of measured distances, executing a step S302 if the distance difference between the calibration distance of each bearing and the reference distance is smaller than a preset threshold, and executing a step S303 if the distance difference between the calibration distance of each bearing and the reference distance is not smaller than the preset threshold.
The reference distance is used for evaluating the accuracy of the calibration distance of each bearing in the marking printer, and if the calibration distance of each bearing is close to the reference distance, the calibration distance is consistent with the actual printing distance and can be used as the marking distance of the marking printer; if the calibration distance of each bearing is far from the reference distance, which indicates that the calibration distance is not consistent with the actual printing distance, the mark printer needs to be calibrated.
In this embodiment, since the plurality of measurement distances are measurement distances obtained by measuring the cable for a plurality of times by the laser distance meter, the calibration device may use an average value of the plurality of measurement distances as a reference distance when obtaining the plurality of measurement distances; optionally, the calibration device may also preprocess the plurality of measurement distances to remove abnormal measurement distances therein, and then use an average value of the remaining measurement distances as a reference distance; optionally, the calibration device may also use any of the plurality of measured distances as the reference distance.
And S302, calibrating the bearing parameter of each bearing by using the calibration distance of each bearing.
The embodiment relates to a scenario in which the calibration device determines that a distance difference between a calibration distance of each bearing and a reference distance is smaller than a preset threshold, and in this scenario, it is described that the calibration distance of each bearing is close to the reference distance, so that the calibration device can calibrate a bearing parameter of each bearing by using the calibration distance of each bearing, for example, a rotation turn number of an nth bearing can be calculated by using the above relational expression (1) according to the calibration distance of the nth bearing, and the rotation turn number is a calibrated turn number, so that the rotation turn number can be directly used as a rotation turn number of the nth bearing after calibration, that is, a bearing parameter.
And S303, returning to the step of acquiring a plurality of marking distances of each bearing in the marking printer after the marking printer marks the cable for a plurality of times.
The present embodiment relates to a scenario in which the calibration device determines that the distance difference between the calibration distance of each bearing and the reference distance is not less than the preset threshold, and in this scenario, the calibration distance of each bearing is far from the reference distance, so the calibration device may return to the step of performing S101 to recalibrate the marking printer, that is, to obtain the calibration distance of each bearing again, and then perform evaluation according to the reference distance until the calibration distance of each bearing is close to the reference distance, thereby completing accurate calibration of the marking printer.
In summary of all the above embodiments, there is also provided a calibration method for a marking printer, as shown in fig. 5, the method comprising:
s401, a plurality of marking distances of each bearing in the marking printer are obtained after the marking printer marks the cable for a plurality of times.
S402, obtaining a plurality of measuring distances obtained after the laser range finder measures the marked distance on the cable for a plurality of times.
S403, carrying out statistical operation on the plurality of marked distances of each bearing to obtain the average distance and the standard deviation of the plurality of marked distances of each bearing.
S404, correcting each marked distance of each bearing by using the correction coefficient corresponding to each marked distance of each bearing to obtain the calibration distance of each bearing.
S405, determining a reference distance according to the plurality of measured distances, executing a step S406 if the distance difference between the calibration distance of each bearing and the reference distance is smaller than a preset threshold, and executing a step S407 if the distance difference between the calibration distance of each bearing and the reference distance is not smaller than the preset threshold.
And S406, calibrating the bearing parameter of each bearing by using the calibration distance of each bearing.
And S407, returning to the step of acquiring a plurality of marking distances of each bearing in the marking printer after the marking printer marks the cable for a plurality of times.
The above steps are described in the foregoing description, and for details, refer to the foregoing description, which is not repeated herein.
Optionally, the present application further provides a calibration system of a mark printer applying the above method, as shown in fig. 6, the system includes: the laser distance measuring device comprises a mark printer, at least one laser distance measuring device, a calibration device and a cable, wherein the calibration device is respectively connected with the laser distance measuring device and the mark printer, and the cable penetrates through the mark printer. The marking printer is used for outputting a plurality of marking distances of each bearing in the marking printer after marking the cable for a plurality of times; the laser range finder is used for measuring the marked distance on the cable for multiple times to obtain multiple measuring distances; the calibration device is adapted to perform a calibration method for a label printer as described in any of the embodiments of figures 2-5 above.
In practical application, can set up laser range finder in the arbitrary side of mark printer, for example, the cable entry side or the cable outlet side of mark printer, and laser range finder in this embodiment can specifically be the laser that tests the speed, and the cable setting carries out the uniform velocity on laser range finder's output optical path and moves, makes laser range finder can measure the moving speed that obtains in the cable unit interval, and then obtains the measuring distance of cable according to this moving speed again.
Specifically, the cable is moved at a constant speed manually or automatically, the marking printer is started to mark the cable, the laser range finder is started to measure the moving speed of the cable, and then the measured distance is obtained. When the marking printer marks the cable for multiple times and the laser range finder measures the cable for multiple times, the calibration device can obtain multiple marking distances of each bearing in the marking printer after marking for multiple times from the marking printer, correspondingly obtain multiple measuring distances after measuring for multiple times from the laser range finder, then calibrate the bearing parameters of the marking printer according to the calibration method, and then accurately mark the cable by using the calibrated marking printer. For the specific method of the above calibration, please refer to the foregoing description, which is not repeated herein. It will be appreciated that when the calibration system described above includes a plurality of laser rangefinders, the calibration apparatus may employ an average of the measured distances of the plurality of laser rangefinders as the measured distance of the laser rangefinder, thereby improving the measurement accuracy of the laser rangefinder.
Optionally, on the basis of fig. 6, there is further provided a calibration system of a mark printer applying the method, as shown in fig. 7, the system further includes a motor for moving the cable to the mark printer at a preset speed for marking.
Alternatively, the cable in the system may be a looped cable, for example, as shown in FIG. 7, which passes through both the motor and the label printer, allowing the label printer to label at the speed at which the motor moves the cable; the motor and the mark printer are respectively arranged at different positions of the annular cable, so that the whole annular cable is uniformly stressed, and can move at a constant speed and mark at a constant speed, and the accuracy of the calibration system is improved. The setting of annular cable can make mark printer and laser range finder carry out mark and measurement many times to the cable automatically, can improve calibration system's calibration efficiency.
It should be noted that the cable in the system may not be a circular cable, for example, as shown in fig. 6, the cable to be measured is a circuit with a length, and the calibration method using this type of cable is consistent with the calibration method of the circular cable.
Alternatively, if the calibration system includes two laser rangefinders, the two laser rangefinders may be respectively disposed on both sides of the mark printer for measurement, for example, as shown in fig. 7, the two laser rangefinders may be respectively disposed at a position (a) of the cable on the cable input port side of the mark printer and a position (b) of the cable on the cable output port side of the mark printer. The laser distance meter at the cable input side is used for measuring the distance obtained when the cable passes through the laser distance meter at the cable output side, the laser distance meter at the cable output side is used for measuring the distance obtained when the cable passes through the laser distance meter at the cable input side, then, the calibration equipment can take the average distance of the measured distance obtained by the laser distance meter at the cable input side and the measured distance obtained by the laser distance meter at the cable output side as the measured distance of the laser distance meter of the calibration system, and then, the printer is calibrated and marked by using the measured distance; optionally, the calibration device may compare the measured distance obtained by the laser range finder on the cable input port side with the measured distance obtained by the laser range finder on the cable output port side, and if the difference between the two distances is not large, one measured distance may be selected as the measured distance of the laser range finder of the calibration system, and then the measured distance calibration marking printer is used; if the two distances are different greatly, the calibration is carried out after the re-measurement. The actual marking distance of the cable is measured through the laser range finders, so that the measurement accuracy can be improved, and the calibration accuracy of later calibration based on the measured distance is improved.
It should be understood that although the various steps in the flow charts of fig. 2-5 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-5 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
In one embodiment, as shown in fig. 8, there is provided a calibration apparatus of a mark printer, including:
the first obtaining module 11 is configured to obtain a plurality of marking distances of each bearing inside the marking printer after the marking printer marks the cable for a plurality of times.
And the second obtaining module 12 is configured to obtain a plurality of measuring distances obtained by measuring the mark distance on the cable for a plurality of times by the laser distance meter.
A calibration module 13, configured to calibrate a bearing parameter in the marking printer according to the plurality of marking distances and the plurality of measuring distances of each bearing.
In one embodiment, as shown in fig. 9, the calibration module 13 includes:
a first calculating unit 131, configured to perform statistical calculation on the plurality of marked distances of each bearing to obtain an average distance and a standard deviation of the plurality of marked distances of each bearing;
a second computing unit 132, configured to calculate a correction coefficient corresponding to each marked distance of each bearing according to the plurality of marked distances of each bearing, and an average distance and a standard deviation of the plurality of marked distances of each bearing;
a correcting unit 133, configured to correct each marked distance of each bearing by using a correction coefficient corresponding to each marked distance of each bearing, so as to obtain a calibration distance of each bearing;
a calibration unit 134 for calibrating the bearing parameters according to the calibration distance of each bearing and the plurality of measurement distances.
In one embodiment, as shown in fig. 10, the calibration unit 134 includes:
a first calibration subunit 1341, configured to calibrate a bearing parameter of each bearing by using the calibration distance of each bearing if a distance difference between the calibration distance of each bearing and the corresponding measured distance is smaller than a preset threshold;
a second calibration subunit 1342, configured to, in a case that a distance difference between the calibration distance of each bearing and the corresponding measurement distance is not smaller than a preset threshold, return to performing the step of obtaining the plurality of marked distances of each bearing inside the marking printer after the marking of the cable by the marking printer is performed for a plurality of times.
In one embodiment, as shown in fig. 11, the second operation unit 132 includes:
the first operation subunit 1321 is configured to, if the current marking distance of the current bearing is within a first preset range, calculate, based on a first correction manner, a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, an average distance and a standard deviation of a plurality of marking distances of the current bearing;
a second operation subunit 1322, configured to calculate, based on a second correction manner and according to the current marked distance of the current bearing, and an average distance and a standard deviation of a plurality of marked distances of the current bearing, a correction coefficient corresponding to the current marked distance of the current bearing if the current marked distance of the current bearing is within a second preset range;
a third operation subunit 1323, configured to, if the current marking distance of the current bearing is within a third preset range, calculate, based on a third correction manner, a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, an average distance and a standard deviation of a plurality of marking distances of the current bearing;
and a fourth operation subunit 1324, configured to, if the current marking distance of the current bearing is within a fourth preset range, calculate, based on a fourth correction manner, a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, an average distance of the plurality of marking distances of the current bearing, and a standard deviation.
For specific limitations of the calibration means of the label printer, reference may be made to the above limitations of the calibration method of the label printer, which are not described in detail herein. The various modules in the calibration apparatus of the above described marking printer may be implemented in whole or in part by software, hardware, and combinations thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 12. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing the marking data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of calibrating a label printer.
Those skilled in the art will appreciate that the architecture shown in fig. 12 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
obtaining a plurality of marking distances of each bearing in a marking printer after the marking printer marks a cable for a plurality of times;
obtaining a plurality of measuring distances obtained after the laser range finder measures the marking distance on the cable for a plurality of times;
calibrating bearing parameters in the marking printer based on the plurality of marking distances and the plurality of measured distances for each bearing.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
performing statistical operation on the plurality of marked distances of each bearing to obtain the average distance and the standard deviation of the plurality of marked distances of each bearing;
calculating a correction coefficient corresponding to each marking distance of each bearing according to the plurality of marking distances of each bearing and the average distance and standard deviation of the plurality of marking distances of each bearing;
correcting each marked distance of each bearing by using a correction coefficient corresponding to each marked distance of each bearing to obtain a calibration distance of each bearing;
calibrating the bearing parameters according to the calibration distance of each bearing and the plurality of measurement distances.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining a reference distance from the plurality of measured distances;
if the distance difference between the calibration distance of each bearing and the reference distance is smaller than a preset threshold value, calibrating the bearing parameters of each bearing by using the calibration distance of each bearing;
and if the distance difference between the calibration distance of each bearing and the reference distance is not smaller than a preset threshold value, returning to execute the step of obtaining the plurality of marked distances of each bearing in the marking printer after the marking of the cable for a plurality of times by the marking printer.
The implementation principle and technical effect of the computer device provided by the above embodiment are similar to those of the above method embodiment, and are not described herein again.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
if the current marking distance of the current bearing is within a first preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing according to a first correction mode;
if the current marking distance of the current bearing is within a second preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing according to a second correction mode;
if the current marking distance of the current bearing is within a third preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing according to a third correction mode;
and if the current marking distance of the current bearing is within a fourth preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of the plurality of marking distances of the current bearing according to a fourth correction mode.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
obtaining a plurality of marking distances of each bearing in a marking printer after the marking printer marks a cable for a plurality of times;
obtaining a plurality of measuring distances obtained after the laser range finder measures the marking distance on the cable for a plurality of times;
calibrating bearing parameters in the marking printer based on the plurality of marking distances and the plurality of measured distances for each bearing.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
performing statistical operation on the plurality of marked distances of each bearing to obtain the average distance and the standard deviation of the plurality of marked distances of each bearing;
calculating a correction coefficient corresponding to each marking distance of each bearing according to the plurality of marking distances of each bearing and the average distance and standard deviation of the plurality of marking distances of each bearing;
correcting each marked distance of each bearing by using a correction coefficient corresponding to each marked distance of each bearing to obtain a calibration distance of each bearing;
calibrating the bearing parameters according to the calibration distance of each bearing and the plurality of measurement distances.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
determining a reference distance from the plurality of measured distances;
if the distance difference between the calibration distance of each bearing and the reference distance is smaller than a preset threshold value, calibrating the bearing parameters of each bearing by using the calibration distance of each bearing;
and if the distance difference between the calibration distance of each bearing and the reference distance is not smaller than a preset threshold value, returning to execute the step of obtaining the plurality of marked distances of each bearing in the marking printer after the marking of the cable for a plurality of times by the marking printer.
The implementation principle and technical effect of the computer device provided by the above embodiment are similar to those of the above method embodiment, and are not described herein again.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
if the current marking distance of the current bearing is within a first preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing according to a first correction mode;
if the current marking distance of the current bearing is within a second preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing according to a second correction mode;
if the current marking distance of the current bearing is within a third preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of a plurality of marking distances of the current bearing according to a third correction mode;
and if the current marking distance of the current bearing is within a fourth preset range, calculating to obtain a correction coefficient corresponding to the current marking distance of the current bearing according to the current marking distance of the current bearing, the average distance and the standard deviation of the plurality of marking distances of the current bearing according to a fourth correction mode.
The implementation principle and technical effect of the computer-readable storage medium provided by the above embodiments are similar to those of the above method embodiments, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
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