CN112798046B - Method and system for aligning upper window and lower window of mobile trolley of paper detection scanning frame - Google Patents
Method and system for aligning upper window and lower window of mobile trolley of paper detection scanning frame Download PDFInfo
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- CN112798046B CN112798046B CN202011642105.9A CN202011642105A CN112798046B CN 112798046 B CN112798046 B CN 112798046B CN 202011642105 A CN202011642105 A CN 202011642105A CN 112798046 B CN112798046 B CN 112798046B
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- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
Abstract
The invention discloses a method and a system for aligning upper and lower windows of a mobile trolley of a paper detection scanning frame, which comprises the following steps of firstly setting the motion range of the mobile trolley and carrying out initialization setting on the mobile trolley; keeping one window of the moving trolley still, collecting the characteristic parameters of the other window of the moving trolley reciprocating in the motion range, inputting the characteristic parameters into a trained model to calculate and record the alignment positions of the moving trolley in the forward and backward motion directions, and then obtaining the final alignment position to align the moving trolley with the upper and lower windows in the final alignment position; according to the invention, the AD value of the sensor is directly taken as a judgment basis in the window alignment process, so that system errors caused by sensor assembly and trolley installation are avoided; the acquisition speed is faster and more sensitive, and the alignment process is not influenced by the production line, and does not have extra auxiliary assembly facility, does not need artifical periodic maintenance, further practices thrift equipment cost and cost of labor.
Description
Technical Field
The invention relates to the technical field of paper quality detection, in particular to an alignment method and system for upper and lower windows of a mobile trolley of a paper detection scanning frame.
Background
The carriage of the scanning frame for detecting the quality of the paper is generally provided with sensors for quantifying, moisture, thickness and the like.
And the windows of the upper head and the lower head of the sensor need to be strictly aligned, otherwise, the problems of inaccurate scanning data, poor data repeatability and the like can occur.
One of the main alignment ways of the upper and lower heads of the current scanning frame trolley is manual alignment: the method comprises the steps of firstly stopping the scanning frame, disconnecting the upper head and the lower head of the scanning frame, then manually pushing the upper head and the lower head of the scanning frame to be roughly aligned, and then carrying out accurate alignment by means of a ruler or a customized tool made in advance.
This approach has several disadvantages:
1. the manual alignment may cause a large error because the final purpose of the alignment of the upper and lower heads is to align the window of the sensor, and the error of the alignment only by a visual method depends not only on the skill level of the field operator, but also on whether the housing and the window are misaligned during the assembly of the sensor;
2. the repeatability of manual alignment is poor, so that the repeatability of the AD value of the sensor is reduced;
3. the manual alignment can be carried out only after the production is suspended, and can not be carried out at any time, so that the operation is inconvenient;
another way of current alignment of the upper and lower heads of the gantry cart is automatic alignment using signals from the mounted proximity switches.
This approach also has the following disadvantages that cannot be overcome:
1. proximity switches must be installed;
2. because the response time of the proximity switch is slow, the maximum centimeter-level dislocation of the upper head and the lower head, errors and poor repeatability can be caused;
3. flying flocs possibly exist in a paper making workshop, the alignment precision of the proximity switch is influenced, and a specially-assigned person needs to clean the proximity switch regularly;
4. since the proximity switch principle determines that no paper or other foreign material can be present between the upper and lower ends of the trolley during alignment, this method does not work when the machine is running continuously to make paper, and alignment must be performed during a paper break or shutdown.
Disclosure of Invention
In order to solve the technical problem, the scheme provides a method and a system for aligning upper and lower windows of a mobile trolley of a paper detection scanning frame.
The invention is realized by the following technical scheme:
the scheme provides an alignment method for upper and lower windows of a moving trolley of a paper detection scanning frame, which comprises the following steps:
s1, setting a motion range of a movable trolley, and carrying out initialization setting on the movable trolley;
s2, keeping one window of the moving trolley to be static, and collecting characteristic parameters of the other window of the moving trolley in reciprocating motion within a motion range;
s3, inputting the characteristic parameters obtained in the S2 into a trained model to calculate and record the alignment positions of the moving trolley in the forward and backward moving directions;
s4, obtaining a final alignment position according to the alignment positions of the mobile trolley in two directions of repeated reciprocating motion;
and S5, aligning the upper window and the lower window of the mobile trolley at the final alignment position.
The further optimization scheme is that the initialization setting of the mobile trolley specifically comprises the following steps:
stopping the moving trolley at the current motion state and returning to the warehouse;
after the movable trolley is confirmed to return to the warehouse, the clutch devices of the upper window and the lower window of the movable trolley are separated, so that only one window of the movable trolley can move.
The further optimization scheme is that the characteristic parameters of the reciprocating motion of the window of the movable trolley in the motion range are as follows: the direction and position information of the reciprocating motion of the window of the mobile trolley and the AD value uploaded by a sensor in the window of the mobile trolley. The method for obtaining the final alignment position specifically comprises the following steps:
the further optimization scheme is that the alignment positions of the moving trolley which moves forward and backward for multiple times are respectively averaged, and the middle position of the two average positions is taken as the final alignment position.
The further optimization scheme is that the specific process of aligning the upper window and the lower window of the mobile trolley at the final alignment position is as follows: after the trolley moves to the final alignment position, the clutch device of the upper window and the lower window of the movable trolley is closed.
The further optimization scheme is that when the movement range of the movable trolley is set, the movement range of the movable trolley is set to be outside the edge of the paper.
The invention also provides an aligning system for the upper and lower windows of the moving trolley of the paper detection scanning frame based on the aligning method for the upper and lower windows of the moving trolley of the paper detection scanning frame, which comprises the following steps: the device comprises an initialization module, a characteristic parameter acquisition module, a model calculation module and a clutch operation module;
the initialization module is used for setting the motion range of the mobile trolley and carrying out initialization setting on the mobile trolley;
under the condition that one window of the movable trolley is static, the characteristic parameter acquisition module acquires the characteristic parameter of the other window of the movable trolley which reciprocates in the motion range;
the model calculation module inputs the characteristic parameters into a trained model to calculate and record the alignment positions of the moving trolley in the forward and backward directions;
the clutch operation module is used for separating or closing the clutch device of the upper window and the lower window of the movable trolley.
The further optimization scheme is that the initialization setting of the mobile trolley specifically comprises the following steps:
stopping the moving trolley at the current motion state and returning to the warehouse;
after the movable trolley is confirmed to return to the warehouse, the clutch devices of the upper window and the lower window of the movable trolley are separated, so that only one window of the movable trolley can move.
The further optimization scheme is that the characteristic parameters of the reciprocating motion of the window of the movable trolley in the motion range are as follows: the direction and position information of the reciprocating motion of the window of the moving trolley and the AD value uploaded by the sensor in the window of the moving trolley.
The working principle of the scheme is as follows: a measuring transducer such as ration, moisture, thickness is generally equipped with in the travelling car for paper quality testing, and the sensor of window on the travelling car and the sensor of window need strict alignment down, otherwise can appear scanning data inaccurate, data repeatability subalternation problem, prior art generally has two kinds to its mode: the invention provides a method and a system for aligning upper and lower windows of a mobile trolley of a paper detection scanning frame, which are based on the defects of the two modes, namely manual alignment and automatic alignment of an installation proximity switch.
Because the final aim of the alignment work of the upper window and the lower window of the mobile trolley is to align the windows of the upper sensor and the lower sensor, when a manual alignment method is adopted, the upper part and the lower part of the mobile trolley are aligned only by a visual method, and the generated error not only depends on the proficiency of a field operator, but also depends on whether the shell and the window have dislocation phenomenon during the assembly of the sensors; the method adopts the technical scheme that the characteristic parameters in the moving process of the moving trolley are input into the trained model to calculate the obtained final alignment position for alignment, the AD value of the sensor is directly used as the judgment basis, the system error caused by sensor assembly and moving trolley installation is avoided, the error generated in manual alignment is avoided, and the accuracy is improved. And manual alignment must be carried out after paper production is stopped, the alignment cannot be carried out at any time, and the operation is inconvenient. Similarly, for the signal automatic alignment method using the installation of the proximity switch, because the response time of the proximity switch is slow, the maximum centimeter-level dislocation of the upper head and the lower head can be caused, and the error and the repeatability are poor; flying flocs possibly exist in a papermaking workshop, the alignment precision of the proximity switch is influenced, and a specially-assigned person is required to clean the workshop regularly; because the principle of the proximity switch determines that paper and other foreign matters cannot exist between the upper head and the lower head of the trolley during alignment, the mode cannot work when the paper machine continuously operates for papermaking, and alignment must be carried out in a paper breaking or shutdown state, the whole process of aligning the upper window and the lower window of the movable trolley by the method provided by the invention is not influenced by whether the production line is producing paper or not, an operator does not need to enter a production area, and production is not influenced; the method has no additional auxiliary equipment and facilities, does not need manual regular maintenance, and saves equipment cost and labor cost.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the alignment method and system for the upper window and the lower window of the mobile trolley of the paper detection scanning frame, provided by the invention, the alignment process of the upper window and the lower window of the mobile trolley directly takes the AD value of a sensor as a judgment basis, and system errors caused by sensor assembly and trolley installation can be avoided; the method has no artificial influence, so the repeatability is good, and the stability of the detection value of the sensor is indirectly improved.
2. According to the alignment method and system for the upper window and the lower window of the mobile trolley of the paper detection scanning frame, provided by the invention, the sensor data of the mobile trolley is used, the acquisition speed is higher and more sensitive than that of a proximity switch, and the error after alignment is smaller.
3. According to the alignment method and system for the upper window and the lower window of the moving trolley of the paper detection scanning frame, provided by the invention, the alignment process of the upper window and the lower window of the moving trolley is not influenced by whether a production line is producing paper or not, the inherent sensor of the trolley is used as the acquisition equipment for judging the conditions, additional auxiliary equipment and labor cost are not required to be added, the production is not influenced, and the equipment cost and the labor cost are further saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a schematic flow chart of the alignment method for the upper and lower windows of the mobile trolley of the paper detection scanning frame according to the present invention;
fig. 2 is a schematic structural diagram of the scanning frame and the moving trolley.
In the drawings:
1-detection scanning frame, 2-moving trolley, 21-upper window of moving trolley, 22-lower window of moving trolley, and 3-paper.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
As shown in fig. 2, in a normal operation of the paper detecting apparatus, the moving trolley 2 reciprocates along the paper detecting scanning frame 1, the paper 3 moves through the gap of the paper detecting scanning frame 1, and the moving direction of the moving trolley 2 is perpendicular to the moving direction of the paper 3; the moving trolley 2 is divided into an upper moving trolley window 21 and a lower moving trolley window 22, the current main alignment modes of the upper and lower moving trolley windows are manual alignment and automatic alignment by using signals of a proximity switch, but the manual alignment may cause large errors, and the automatic alignment method by using signals of the proximity switch has high requirements on the environment.
Therefore, the following embodiments are designed to provide a method and a system for aligning upper and lower windows of a mobile trolley of a paper detection scanning frame according to the technical solution of the present invention to solve the above technical problems.
Example 1
As shown in fig. 1, a method for aligning upper and lower windows of a mobile trolley of a paper detection scanning frame includes the steps of:
s1, setting a motion range of a movable trolley, and carrying out initialization setting on the movable trolley;
the initialization setting of the mobile trolley specifically comprises the following steps: stopping the moving trolley at the current motion state and returning to the warehouse; after the movable trolley is confirmed to return to the warehouse, the clutch devices of the upper window and the lower window of the movable trolley are separated, so that only one window of the movable trolley can move.
In general, the gap width of the detection scanning frame 1 is larger than the sum of the widths of the paper 3 and the moving trolley, and after the moving trolley returns to the warehouse, a certain movement space is provided so that the moving trolley does not touch the paper, so that the movement range of the moving trolley 2 is arranged outside the edge of the paper 3 and does not touch the position of the paper 3.
S2, keeping one window of the moving trolley still, and collecting characteristic parameters of the other window of the moving trolley in reciprocating motion in a motion range;
specifically, the characteristic parameters of the reciprocating motion of the window of the mobile trolley in the motion range are as follows: the direction and position information of the reciprocating motion of the window of the moving trolley and the AD value uploaded by the sensor in the window of the moving trolley.
S3, inputting the characteristic parameters obtained in the S2 into a trained model to calculate and record the alignment positions of the moving trolley in the forward and backward moving directions;
s4, obtaining a final alignment position according to the alignment positions of the moving trolley in two directions of repeated reciprocating motion;
specifically, the average value of the alignment positions of the moving trolley which moves back and forth for multiple times in two directions is respectively obtained, and the middle position of the two average value positions is taken as the final alignment position.
And S5, aligning the upper window and the lower window of the mobile trolley at the final alignment position.
Specifically, the specific process of aligning the upper window and the lower window of the mobile trolley at the final alignment position is as follows: after the trolley moves to the final alignment position, the clutch device of the upper window and the lower window of the movable trolley is closed.
Example 2
Based on the alignment method for the upper and lower windows of the mobile trolley of the paper detection scanning frame in embodiment 1, this embodiment further provides an alignment system for the upper and lower windows of the mobile trolley of the paper detection scanning frame, which includes: the device comprises an initialization module, a characteristic parameter acquisition module, a model calculation module and a clutch operation module;
the initialization module is used for setting the motion range of the mobile trolley and carrying out initialization setting on the mobile trolley;
under the condition that one window of the movable trolley is static, the characteristic parameter acquisition module acquires the characteristic parameter of the other window of the movable trolley which reciprocates in the motion range;
the model calculation module inputs the characteristic parameters into a trained model to calculate and record the alignment positions of the moving trolley in the forward and backward directions;
the clutch operation module is used for separating or closing a clutch device of an upper window and a lower window of the movable trolley.
The initialization setting of the mobile trolley specifically comprises the following steps:
stopping the moving trolley at the current motion state and returning to the warehouse;
after the movable trolley is confirmed to return to the warehouse, the clutch devices of the upper window and the lower window of the movable trolley are separated, so that only one window of the movable trolley can move.
The characteristic parameters of the reciprocating motion of the window of the movable trolley in the motion range are as follows: the direction and position information of the reciprocating motion of the window of the mobile trolley and the AD value uploaded by a sensor in the window of the mobile trolley.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (2)
1. A method for aligning upper and lower windows of a mobile trolley of a paper detection scanning frame is characterized by comprising the following steps:
s1, setting a motion range of a movable trolley, and carrying out initialization setting on the movable trolley;
comprises the following steps: when the movement range of the movable trolley is set, the movement range of the movable trolley is set outside the edge of the paper;
stopping the moving trolley at the current motion state and returning to the warehouse, and separating the clutch devices of the upper window and the lower window of the moving trolley after confirming that the moving trolley returns to the warehouse, so that only one window of the moving trolley can move;
s2, keeping one window of the moving trolley still, and collecting characteristic parameters of the other window of the moving trolley in reciprocating motion in a motion range;
the characteristic parameters are as follows: the direction and position information of the reciprocating motion of the window of the moving trolley and the AD value uploaded by the sensor in the window of the moving trolley;
s3, inputting the characteristic parameters obtained in the S2 into a trained model to calculate and record the alignment positions of the moving trolley in the forward and backward moving directions;
s4, obtaining a final alignment position according to the alignment positions of the mobile trolley in two directions of repeated reciprocating motion;
s5, aligning the upper window and the lower window of the mobile trolley at the final alignment position;
comprises the following steps: after the trolley moves to the final alignment position, the clutch device of the upper window and the lower window of the movable trolley is closed;
and respectively calculating the average value of the alignment positions of the moving trolley in the two directions of repeated forward and backward movement, and taking the middle position of the two average value positions as the final alignment position.
2. An alignment system for upper and lower windows of a moving trolley of a paper detection scanning frame, which is used for realizing the alignment method for the upper and lower windows of the moving trolley of the paper detection scanning frame in claim 1, and comprises the following steps: the device comprises an initialization module, a characteristic parameter acquisition module, a model calculation module and a clutch operation module;
the initialization module is used for setting the motion range of the mobile trolley and carrying out initialization setting on the mobile trolley;
under the condition that one window of the movable trolley is static, the characteristic parameter acquisition module acquires the characteristic parameter of the other window of the movable trolley which reciprocates in the motion range; the characteristic parameters are as follows: the direction and position information of the reciprocating motion of the window of the moving trolley and the AD value uploaded by the sensor in the window of the moving trolley;
the model calculation module inputs the characteristic parameters into a trained model to calculate and record the alignment positions of the moving trolley in the forward and backward directions;
the clutch operation module is used for separating or closing the clutch device of the upper window and the lower window of the movable trolley.
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