CN216012589U - Pointer type pressure gauge batch automatic calibration system - Google Patents
Pointer type pressure gauge batch automatic calibration system Download PDFInfo
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- CN216012589U CN216012589U CN202122655267.2U CN202122655267U CN216012589U CN 216012589 U CN216012589 U CN 216012589U CN 202122655267 U CN202122655267 U CN 202122655267U CN 216012589 U CN216012589 U CN 216012589U
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Abstract
The utility model discloses a pointer manometer is automatic calibration system in batches, including pressurization platform, a N setting at the manometer erection column, camera positioning mechanism, the circular orbit of pressurization bench top portion, slide and be used for ingesting the removal digital camera subassembly of examining pointer manometer dial plate image along the circular orbit, be used for tapping the telescopic hammer mechanism that strikes of examining pointer manometer shell. The utility model can ensure the accuracy of the dial image shot by the digital camera by setting the camera positioning mechanism to determine the point to which the digital camera on the circular track moves, thereby improving the accuracy of the pointer indicated value in the image read by the computer; in addition, the camera positioning mechanism is arranged, so that the angle limitation during installation of the detected pointer type pressure gauge can be reduced, the installation operation difficulty of the detected pointer type pressure gauge is reduced, and the rapid installation of the detected pointer type pressure gauge is facilitated.
Description
Technical Field
The utility model belongs to the technical field of pointer manometer calibration, concretely relates to pointer manometer is automatic calibration system in batches.
Background
In the process of production and operation of an oil field, the elastic sensing element of the pointer type pressure gauge has high mechanical strength and has the advantages of simple structure, low manufacturing cost, reliable performance, convenience in maintenance and repair and the like, so that the pointer type pressure gauge is more and more widely applied. With the development of digital electronic technology, part of pointer type pressure gauges are replaced by digital instruments, the digital instruments have high accuracy and are easy to read, but when the measured values are rapidly changed or fluctuate back and forth, the indicating values of the digital instruments can correspondingly rapidly change and are difficult to read; and if the display time interval is controlled, the details of the change therebetween are ignored. Therefore, from this angle, pointer-type pressure gauge possesses obvious advantage, and it can reflect measuring value change range directly perceivedly to because pointer-type pressure gauge structure is simple relatively, and installation convenient to use, the cost is lower, therefore still plays irreplaceable effect. However, after the pointer type pressure gauge is used and pressed for a period of time, the movement is inevitably deformed and abraded, and accordingly various errors and faults can be caused by the pointer type pressure gauge. In order to ensure the original accuracy of pointer type without distorting the magnitude transmission, calibration is required in time to ensure correct and reliable indication.
At present, the domestic calibration work of the pointer type pressure gauge mainly adopts a method of manually observing the reading of a dial plate of the gauge to carry out calibration, and the following defects and shortcomings exist during actual calibration: firstly, under the influence of subjective factors of people such as observation angle, observation distance, fatigue strength and the like, the existing degree error is large, and the reliability is not high; secondly, the dial is easy to fatigue after being read for a long time, so that interpretation errors are generated; thirdly, the reading of a single meter is manually calibrated, and the operation flow is complicated. In addition, although some pointer type pressure gauge automatic calibration systems appear in the market, the existing pointer type pressure gauge automatic calibration systems are inconvenient to use and operate, low in calibration efficiency, inaccurate in calibration result and the like to different degrees; meanwhile, the existing pointer type pressure gauge automatic calibration system adopts a camera to shoot dial plate images, so that the requirement on the installation angle of the pressure gauge is very strict, and the installation time of the pressure gauge is inevitably increased. Therefore, how to realize the automatic calibration of the pointer type pressure gauge to improve the calibration efficiency and the calibration accuracy and increase the fault tolerance of the installation angle of the pressure gauge becomes a problem which needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide a pointer type pressure gauge batch automatic calibration system, which has simple structure, reasonable design and strong practicability, and can determine the point to which the digital camera on the circular track moves when the digital camera moves by setting the camera positioning mechanism to measure the installation angle of the detected pointer type pressure gauge, so as to ensure the accuracy of the dial image shot by the digital camera, thereby improving the accuracy of the computer to read the pointer indication value in the image; in addition, the camera positioning mechanism is arranged, so that the angle limitation during installation of the detected pointer type pressure gauge can be reduced, the installation operation difficulty of the detected pointer type pressure gauge is reduced, and the rapid installation of the detected pointer type pressure gauge is facilitated.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a pointer-type manometer is automatic calibration system in batches which characterized in that: the digital pressure gauge comprises a pressurizing table, N pressure gauge mounting columns arranged at the top of the pressurizing table, a camera positioning mechanism arranged at the center of the pressurizing table and used for determining a digital camera shooting station, an annular rail sleeved on the outer peripheral side of the pressurizing table, a mobile digital camera assembly sliding along the annular rail and used for shooting a detected pointer type pressure gauge dial image, and a telescopic knocking hammer mechanism sliding along the mobile digital camera assembly and used for knocking a detected pointer type pressure gauge shell; an electronic standard meter and N-1 detected pointer pressure meters are arranged on the N pressure meter mounting columns, N is a positive integer and is not less than 4; the N pressure gauge mounting columns are uniformly distributed in the circumferential direction by taking the vertical central line of the pressurizing table as the center; the vertical central line of the pressurizing table is coincided with the axis of the annular track;
the camera positioning mechanism comprises a vertical rotating shaft inserted in the center of the pressurizing table, a rotation control mechanism used for controlling the vertical rotating shaft to rotate, and two laser range finders which are horizontally fixed on the vertical rotating shaft and used for measuring the distance between the rear shell of the detected pointer type pressure gauge and the vertical center line of the pressurizing table, wherein the laser lines of the two laser range finders have included angles and are intersected with the vertical center line of the pressurizing table; the axis of the vertical rotating shaft is coincided with the vertical central line of the pressurizing table;
the mobile digital camera component comprises a digital camera, a camera self-rotating seat which is in sliding fit with the annular track and is used for controlling the rotation of a shooting surface of the digital camera, and a camera control module which is connected with the laser range finder and is used for controlling the camera self-rotating seat and the digital camera to work; the digital camera is connected with a data acquisition processing module for acquiring picture data in the digital camera in real time.
Foretell pointer-type manometer is automatic calibration system in batches, its characterized in that: the rotation control mechanism comprises a limiting ring, a driven gear, a driving gear and a laser rotation control motor, wherein the limiting ring is fixedly sleeved on the vertical rotating shaft and is connected to the upper surface of the pressurizing table in a clamping mode, the driven gear is arranged at the bottom of the vertical rotating shaft and is in contact with the lower surface of the pressurizing table, the driving gear is meshed with the driven gear, and the laser rotation control motor is used for controlling the rotation of the driving gear and is fixedly connected with the bottom of the pressurizing table through an L-shaped mounting plate.
Foretell pointer-type manometer is automatic calibration system in batches, its characterized in that: the camera self-rotation seat comprises a walking wheel set walking along an annular track, a bottom base arranged on the walking wheel set, an annular base arranged on the bottom base, a rotation control motor arranged in the annular base and a horizontal camera mounting plate arranged on a rotation shaft of the rotation control motor, wherein a stable sliding block inserted on the annular base is fixedly arranged at the bottom of the horizontal camera mounting plate, an annular sliding groove for the stable sliding block to slide is formed in the upper surface of the annular base, and the digital camera and the horizontal camera mounting plate are detachably connected through bolts; the shooting surface of the digital camera is positioned right above the rotating shaft of the rotation control motor.
Foretell pointer-type manometer is automatic calibration system in batches, its characterized in that: the telescopic knocking hammer mechanism comprises an electric telescopic rod, a hammer body driving mechanism and a knocking hammer, wherein the electric telescopic rod is arranged on the horizontal camera mounting plate and stretches towards the center direction of the pressurizing table;
the hammer body driving mechanism comprises an open mounting shell for mounting the knocking hammer, a first electromagnet arranged on the inner wall of the open mounting shell and used for adsorbing the knocking hammer to tap the shell of the pointer pressure gauge to be detected, and a second electromagnet arranged on the opposite side of the first electromagnet and used for adsorbing the knocking hammer far away from the pointer pressure gauge to be detected; the knocking hammer comprises a metal rod body and a hammer head, wherein the bottom of the metal rod body is hinged to the bottom of the open mounting shell, and the hammer head is arranged at the top end of the metal rod body.
Foretell pointer-type manometer is automatic calibration system in batches, its characterized in that: the laser lines of the two laser range finders and the meter body central point of the detected pointer type pressure meter are both positioned on the same horizontal plane.
Foretell pointer-type manometer is automatic calibration system in batches, its characterized in that: the included angle of the laser lines of the two laser range finders is 5-10 degrees.
Foretell pointer-type manometer is automatic calibration system in batches, its characterized in that: the camera control module comprises a control circuit board, a microcontroller is integrated on the control circuit board, the output ends of the electronic standard meter and the two laser range finders are connected with the microcontroller, and the digital camera, the electric telescopic rod, the first electromagnet, the second electromagnet, the traveling wheel group, the rotation control motor and the laser rotation control motor are controlled by the microcontroller.
Foretell pointer-type manometer is automatic calibration system in batches, its characterized in that: the data acquisition processing module comprises a computer and a PCI image acquisition card inserted in a PCI slot of the computer, and the digital camera is connected with the PCI image acquisition card through a data bus.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses a set up the removal digital camera subassembly on the circular orbit, the during operation makes digital camera move to each along the circular orbit and is examined the shooting work position that pointer-type pressure gauge corresponds to realize a plurality of batches of examining pointer-type pressure gauge dial plate image and gather, thereby realize examining the batch calibration of pointer-type pressure gauge, need not people manual control and shoot efficiently, the precision is high than the manual work, excellent in use effect.
2. The utility model discloses a set up the camera and shoot a rotation from swivel mount control digital camera, after it reachs each shooting work position of being examined that pointer-type pressure gauge corresponds, carry out the adjustment of digital camera shooting face angle according to the dial plate angle of being examined pointer-type pressure gauge reality, make digital camera shooting face just shoot examining pointer-type pressure gauge dial plate to realize a plurality of batch collection of examining pointer-type pressure gauge dial plate image.
3. The utility model discloses a set up digital camera automatic reading and examine pointer type manometer dial plate image to read through data acquisition and processing module and examine the indicating value on the pointer type manometer dial plate, compare in artifical number of degrees more accurate, and greatly reduced personnel's intensity of labour, economical and practical.
4. The utility model discloses a with telescopic hammer mechanism that strikes setting up on the removal digital camera subassembly, it removes along with digital camera's removal, make a plurality of examined pointer type manometer only need supporting a telescopic hammer mechanism that strikes can, reduced the holistic area of equipment, reduceed the manufacturing cost of equipment, economical and practical.
To sum up, the utility model discloses simple structure, reasonable in design, the practicality is strong, through setting up the installation angle that camera positioning mechanism measured the pointer manometer of being examined, can confirm the digital camera on the circular orbit to move when some point the shooting face can just be to the pointer manometer of being examined afterwards to guarantee the accuracy of the dial plate image that the digital camera shot, thus can improve the computer and read the precision of the pointer indicated value in the image; in addition, the camera positioning mechanism is arranged, so that the angle limitation during installation of the detected pointer type pressure gauge can be reduced, the installation operation difficulty of the detected pointer type pressure gauge is reduced, and the rapid installation of the detected pointer type pressure gauge is facilitated.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the matching relationship between the hammer body driving mechanism, the knocking hammer and the detected pointer type pressure gauge.
Fig. 3 is the utility model discloses digital camera that the examined pointer type manometer corresponds during the use shoots the calculation schematic diagram of worker's point coordinate, digital camera angle of autorotation and rotation direction and telescopic striking hammer mechanism elongation.
Description of reference numerals:
1-a pressure stage; 2-a pressure gauge mounting post; 3-detected pointer type pressure gauge;
4-a circular track; 5-electronic standard list; 6-vertical rotating shaft;
7-a laser range finder; 8-a digital camera; 9-a limiting ring;
10-a driven gear; 11-a drive gear; 12-laser rotation control motor;
13-L-shaped mounting plates; 14-a running wheel set; 15-a bottom base;
16-a ring-shaped base; 17-rotation control motor; 18-a horizontal camera mounting plate;
19-a stabilizing slide; 20-electric telescopic rod. 21-an open mounting shell;
22-a first electromagnet; 23-a second electromagnet; 24-a metal rod body;
25-hammer head; 26-hinged seat.
Detailed Description
As shown in fig. 1, fig. 2 and fig. 3, the utility model discloses a pressure table 1, N pressure gauge erection columns 2 that set up at pressure table 1 top, set up in pressure table 1 central point department and be used for confirming the camera positioning mechanism of 8 shooting stations of digital camera, the cover is established at the ring rail 4 of 1 periphery side of pressure table, along the slip of ring rail 4 and be used for shooing the removal digital camera subassembly of examining pointer type pressure gauge 3 dial plate image, follow the slip of removal digital camera subassembly and be used for tapping the telescopic hammer mechanism that strikes the shell of examining pointer type pressure gauge 3; an electronic standard meter 5 and N-1 detected pointer type pressure meters 3 are arranged on the N pressure meter mounting columns 2, N is a positive integer and is not less than 4; the N pressure gauge mounting columns 2 are uniformly distributed in the circumferential direction by taking the vertical central line of the pressurizing table 1 as the center; the vertical central line of the pressurizing table 1 coincides with the axis of the annular track 4;
the camera positioning mechanism comprises a vertical rotating shaft 6 inserted in the center of the pressurizing table 1, a rotation control mechanism for controlling the vertical rotating shaft 6 to rotate, and two laser range finders 7 which are horizontally fixed on the vertical rotating shaft 6 and used for measuring the distance between the rear shell of the detected pointer type pressure gauge 3 and the vertical center line of the pressurizing table 1, wherein the laser lines of the two laser range finders 7 have included angles and are intersected with the vertical center line of the pressurizing table 1; the axis of the vertical rotating shaft 6 is coincided with the vertical central line of the pressurizing table 1;
the mobile digital camera component comprises a digital camera 8, a camera self-rotating seat which is in sliding fit with the annular track 4 and is used for controlling the rotation of the shooting surface of the digital camera 8, and a camera control module which is connected with the laser range finder 7 and is used for controlling the camera self-rotating seat and the digital camera 8 to work; the digital camera 8 is connected with a data acquisition and processing module for acquiring the picture data in the digital camera 8 in real time.
It should be noted that, by setting the camera positioning mechanism to measure the installation angle of the detected pointer type pressure gauge 3, it can be determined to which point the digital camera 8 on the circular track 4 moves, and the shooting surface can be directly opposite to the detected pointer type pressure gauge 3, so as to ensure the accuracy of the dial image shot by the digital camera 8, and thus the accuracy of the computer for reading the pointer indication value in the image can be improved; in addition, the camera positioning mechanism can also reduce the angle limitation when the detected pointer type pressure gauge 3 is installed, reduce the installation operation difficulty of the detected pointer type pressure gauge 3 and facilitate the quick installation of the detected pointer type pressure gauge 3;
by arranging the movable digital camera component on the annular track 4, when the movable digital camera component works, the digital camera 8 moves to the shooting working positions corresponding to the detected pointer type pressure gauges 3 along the annular track 4 to realize batch acquisition of images of the dial plates of the detected pointer type pressure gauges 3, so that batch calibration of the detected pointer type pressure gauges 3 is realized, manual control is not needed, the efficiency and the precision are higher than those of manual shooting, and the use effect is good;
the camera self-rotation seat is arranged to control the rotation of the shooting surface of the digital camera 8, after the shooting working position reaches the shooting working position corresponding to each detected pointer type pressure gauge 3, the angle of the shooting surface of the digital camera 8 is adjusted according to the actual dial angle of the detected pointer type pressure gauge 3, so that the shooting surface of the digital camera 8 is just opposite to the dial of the detected pointer type pressure gauge 3 to shoot, and the batch collection of the images of the dials of the detected pointer type pressure gauges 3 is realized;
the digital camera 8 is arranged to automatically read the image of the dial plate 3 of the pointer type pressure gauge to be detected, and the data acquisition and processing module is used to read the indication value on the dial plate 3 of the pointer type pressure gauge to be detected, so that the method is more accurate compared with manual degree, greatly reduces the labor intensity of personnel, and is economical and practical;
through setting up telescopic striking hammer mechanism on removing the digital camera subassembly, it removes along with digital camera's removal, makes a plurality of examined pointer type manometer 3 only need a supporting telescopic striking hammer mechanism can, reduced the holistic area of equipment, reduceed the manufacturing cost of equipment, economical and practical.
In this embodiment, rotation control mechanism establishes on vertical rotating shaft 6 and the spacing ring 9 of joint at pressurization platform 1 upper surface including fixed cover, set up in vertical rotating shaft 6 bottom and with pressurization platform 1 lower surface contact's driven gear 10, with driven gear 10 engaged with driving gear 11 and be used for controlling driving gear 11 pivoted laser rotation control motor 12, laser rotation control motor 12 passes through L type mounting panel 13 and pressurization platform 1 bottom fixed connection.
The L-shaped mounting plate 13 allows the entire pressurizing table 1 and the camera positioning mechanism mounted thereon to be moved without being restricted by the mounting place.
In this embodiment, the camera self-rotation base includes a traveling wheel set 14 traveling along the annular track 4, a bottom base 15 disposed on the traveling wheel set 14, an annular base 16 disposed on the bottom base 15, a rotation control motor 17 disposed in the annular base 16, and a horizontal camera mounting plate 18 disposed on a rotation shaft of the rotation control motor 17, a stabilizing slider 19 inserted on the annular base 16 is fixedly disposed at the bottom of the horizontal camera mounting plate 18, an annular sliding groove for the stabilizing slider 19 to slide is formed in the upper surface of the annular base 16, and the digital camera 8 and the horizontal camera mounting plate 18 are detachably connected by a bolt; the shooting surface of the digital camera 8 is positioned right above the rotation shaft of the rotation control motor 17.
In this embodiment, the axis of the rotation shaft of the rotation control motor 17 intersects with the circular travel path line of the circular track 4.
In this embodiment, the traveling wheel set 14 includes a driving wheel and a driven wheel, and the driving wheel and the driven wheel are both embedded in the track groove of the annular track 4 to prevent the digital camera 8 from separating from the track.
In this embodiment, the bottom base 15 has an adjustable installation height, and the height of the bottom base can be adjusted according to the model of the pointer type pressure gauge 3 to be detected, so that the axis of the shooting surface of the digital camera 8 and the axis of the dial plate of the pointer type pressure gauge 3 to be detected are located on the same horizontal plane.
In this embodiment, the telescopic knocking hammer mechanism includes an electric telescopic rod 20 which is arranged on the horizontal camera mounting plate 18 and extends and retracts towards the center direction of the pressurizing table 1, a hammer body driving mechanism which is arranged at the extending and retracting end of the electric telescopic rod 20, and a knocking hammer which is driven by the hammer body driving mechanism;
the hammer body driving mechanism comprises an open mounting shell 21 used for mounting the knocking hammer, a first electromagnet 22 arranged on the inner wall of the open mounting shell 21 and used for adsorbing the knocking hammer to tap the shell of the pointer type pressure gauge 3 to be detected, and a second electromagnet 23 arranged at the opposite side of the first electromagnet 22 and used for adsorbing the knocking hammer far away from the pointer type pressure gauge 3 to be detected; the knocking hammer comprises a metal rod body 24 and a hammer head 25, wherein the bottom of the metal rod body 24 is hinged to the bottom of the open mounting shell 21, and the hammer head 25 is arranged at the top end of the metal rod body 24.
In this embodiment, the horizontal distance between the axis of the electric telescopic rod 20 and the central point of the shooting surface of the digital camera 8 is greater than the radius of the gauge body of the pointer pressure gauge 3 to be detected, so that the knocking hammer and the hammer driving mechanism can extend to the side surface of the pointer pressure gauge 3 to be detected, thereby tapping the side wall of the pointer pressure gauge 3 to be detected.
In this embodiment, the axis of the electric telescopic rod 20 is perpendicular to the plane of the shooting surface of the digital camera 8, and the electric telescopic rod 20 rotates synchronously with the rotation of the digital camera 8, so that when the rotation control motor 17 controls the lens of the digital camera 8 to respectively face a plurality of detected pointer pressure gauges 3, the relative angles between the knocking hammer and the detected pointer pressure gauges 3 are always consistent, the distance between the knocking hammer and each detected pointer pressure gauge 3 may be different, and the different distances can be adjusted by the extension and contraction of the electric telescopic rod 20, so as to ensure that the hammer head 25 of the knocking hammer can accurately knock on the watch case of the detected pointer pressure gauge 3.
In this embodiment, the metal rod 24 is hinged in the open mounting shell 21 through a hinge seat 26.
In this embodiment, the height of the open mounting shell 21 is not more than half of the length of the metal rod 24, so as to ensure that the swing amplitude of the metal rod 24 can enable the hammer 25 to strike the outer shell of the detected pointer type pressure gauge 3.
It should be noted that, in actual use, the metal rod 24 initially rests on the second electromagnet 23, and the first electromagnet 22 and the second electromagnet 23 are not energized; when the electric telescopic rod 20 extends to a position near the detected pointer type pressure gauge 3, the first electromagnet 22 is electrified to adsorb the metal rod body 24 on the first electromagnet 22, the hammer 25 knocks the pressure gauge shell, the second electromagnet 23 is electrified after the first electromagnet 22 is electrified, the metal rod body 24 is adsorbed on the second electromagnet 23, the hammer 25 is far away from the pressure gauge shell, and the automatic tapping of the detected pointer type pressure gauge 3 is completed.
In this embodiment, the laser lines of the two laser distance measuring devices 7 and the meter body center point of the detected pointer type pressure meter 3 are both located on the same horizontal plane.
In this embodiment, the bisector of the angle between the laser lines of the two laser rangefinders 7 passes through the axis of the pressure gauge mounting post 2.
In this embodiment, the included angle between the laser lines of the two laser range finders 7 is 5 to 10 °.
It should be noted that the size of the included angle is selected to be in direct proportion to the width of the gauge body of the detected pointer type pressure gauge 3, so as to ensure that the laser lines of the two laser distance measuring devices 7 can be arranged on the back surface of the gauge body of the detected pointer type pressure gauge 3, and thus the subsequent calculation of the installation angle of the detected pointer type pressure gauge 3 can be performed.
In this embodiment, the camera control module includes a control circuit board, a microcontroller is integrated on the control circuit board, the output ends of the electronic standard meter 5 and the two laser range finders 7 are connected with the microcontroller, and the digital camera 8, the electric telescopic rod 20, the first electromagnet 22, the second electromagnet 23, the walking wheel set 14, the rotation control motor 17 and the laser rotation control motor 12 are controlled by the microcontroller.
In this embodiment, the data acquisition processing module includes a computer and a PCI image acquisition card inserted into a PCI slot of the computer, and the digital camera 8 is connected to the PCI image acquisition card through a data bus.
The utility model discloses when using, including following step:
step one, installing a detected pointer type pressure gauge and an electronic standard gauge on a pointer type pressure gauge batch automatic calibration device: an electronic standard meter 5 and N-1 pointer type pressure meters 3 to be detected are arranged on N pressure meter mounting columns 2, wherein N is a positive integer and is not less than 4;
step two, initializing a pointer type pressure gauge batch automatic calibration device:
step 201, on a horizontal plane where a laser line of a laser range finder 7 is located, establishing a plane rectangular coordinate system xoy with a central point of a vertical rotating shaft 6 as an origin o, taking the true west as the positive direction of an x axis, and taking the true north as the positive direction of a y axis;
step 202, controlling the vertical rotating shaft 6 to rotate, enabling an angular bisector of an included angle between laser lines of the two laser range finders 7 to be intersected with a vertical central line of any detected pointer type pressure gauge 3 beside the electronic standard meter 5, and determining a quadrant of the current detected pointer type pressure gauge 3 in a plane rectangular coordinate system xoy through a rotating angle of the vertical rotating shaft 6;
step 203, controlling the digital camera 8 to rotate, enabling the central axis of the shooting surface of the digital camera 8 to be intersected with the axis of the vertical rotating shaft 6, confirming the coordinate of the current shooting surface central point g of the digital camera 8 in a plane rectangular coordinate system xoy, and obtaining the length of a line segment og;
thirdly, determining the coordinates of the digital camera shooting work site point, the autorotation angle and the autorotation direction of the digital camera and the elongation of the telescopic knocking hammer mechanism corresponding to each detected pointer type pressure gauge:
step 301, calculating the coordinates of a laser point a and the coordinates of a laser point b which are irradiated on the rear shell of the currently detected pointer type pressure gauge 3 according to the measuring lengths of the two laser range finders 7 and the acute included angles between the laser lines emitted by the two laser range finders 7 and the x axis respectively, and calculating the straight line y where the laser point a and the laser point b are located1The linear equation of (a);
step 302, calculating the distance between the straight line y and the plane rectangular coordinate system xoy1A straight line y perpendicular to the current center point f of the body of the pointer type pressure gauge 3 to be detected2The linear equation of (a);
step 303, establishing a circle O by taking the origin O as the center of a circle and the length of the line segment og as the radius r1Calculating the circle O1And a straight line y2The intersection point coordinate of the digital camera 8 is taken as a shooting working position point e of the shooting surface of the digital camera 8 corresponding to the current measured pointer type pressure gauge 3, and the intersection point in the quadrant of the current measured pointer type pressure gauge 3 is taken as a shooting working position point e; the distance between a shooting working site e of a shooting surface of the current digital camera 8 and a central point f of the current detected pointer type pressure gauge 3 is the elongation of the telescopic knocking hammer mechanism corresponding to the current detected pointer type pressure gauge 3;
step 304, calculating the rotation angle theta of the shooting surface of the digital camera 8 at the current shooting work site e of the digital camera 8 according to a formula theta ═ alpha-beta |; wherein, alpha is an acute angle included angle between a connecting line of a current shooting work site e of the digital camera 8 and a central point f of the current detected pointer type pressure gauge 3 and an x axis, and beta is an acute angle included angle between a connecting line of the shooting work site e of a current shooting surface of the digital camera 8 and an original point o and the x axis;
305, when the currently detected pointer type pressure gauge 3 is positioned in the I-th quadrant or the III-th quadrant and alpha is larger than beta, rotating the shooting surface of the digital camera 8 by an angle theta in a counterclockwise direction;
when the currently detected pointer type pressure gauge 3 is positioned in the I-th quadrant or the III-th quadrant and alpha is less than beta, the shooting surface of the digital camera 8 rotates clockwise by an angle theta;
when the currently detected pointer type pressure gauge 3 is positioned in the second quadrant or the fourth quadrant and alpha is larger than beta, the shooting surface of the digital camera 8 rotates clockwise by an angle theta;
when the currently detected pointer type pressure gauge 3 is positioned in the second quadrant or the fourth quadrant and alpha is less than beta, the shooting surface of the digital camera 8 rotates counterclockwise by an angle theta;
when θ is 0, the shooting surface of the digital camera 8 does not rotate;
step 306, controlling the rotation angle of the vertical rotating shaft 6
Laser lines emitted by the two laser range finders 7 are all made to irradiate on the rear shell of the next pointer type pressure gauge 3 to be detected;
step 308, circulating the steps 301 to 306 for N-2 times, and completing the determination of coordinates of a digital camera shooting work site point, a digital camera autorotation angle and autorotation direction and the extension of the telescopic knocking hammer mechanism corresponding to the N-1 detected pointer type pressure gauges;
step four, acquiring zero errors of all detected pointer type pressure gauges:
step 401, when the pressurizing table 1 is not pressurized, that is, when the inner cavity of the detected pointer type pressure gauge 3 is communicated with the atmosphere, controlling the central point of the shooting surface of the digital camera 8 to move from the point g to the shooting working site e of the digital camera 8 corresponding to the detected pointer type pressure gauge 3 in the step 303;
step 402, controlling the autorotation angle theta of the shooting surface of the digital camera 8 corresponding to the currently detected pointer type pressure gauge 3;
step 403, controlling the digital camera 8 to shoot the dial of the currently detected pointer type pressure gauge 3, transmitting the dial image to the data acquisition and processing module to read the pointer type pressure gauge, calculating a zero position error, and completing acquisition of the zero position error of the detected pointer type pressure gauge 3;
step 404, controlling the shooting surface of the digital camera 8 to rotate back to the initial angle; the initial angle is the shooting surface and the circle O of the digital camera 81The angle of the shooting plane of the digital camera 8 when tangent;
405, controlling the central point of the shooting surface of the digital camera 8 to move to a shooting work site e of the digital camera 8 corresponding to the next detected pointer type pressure gauge 3;
step 406, circulating the steps 402 to 405 for N-2 times until the zero errors of the N-1 detected pointer type pressure gauges 3 are all obtained;
and step five, acquiring indication errors of each detected pointer type pressure gauge:
step 501, controlling the pressurizing table 1 to pressurize until the pressure value of the electronic standard meter 5 reaches a first pressure detection value, and controlling the central point of the shooting surface of the digital camera 8 to move to the shooting work site e of the digital camera 8 corresponding to the detected pointer type pressure gauge 3 in step 303;
502, controlling the autorotation angle theta of the shooting surface of the digital camera 8 corresponding to the currently detected pointer type pressure gauge 3;
step 503, controlling the digital camera 8 to shoot the dial plate of the currently detected pointer type pressure gauge 3, and transmitting the dial plate image to the data acquisition processing module to read the pointer type pressure gauge, so as to complete the indicated value measurement before tapping of the detected pointer type pressure gauge 3 under the first pressure detection value;
step 504, controlling the telescopic knocking hammer mechanism to extend the distance length between the current shooting working site e of the digital camera 8 and the central point f of the pointer pressure gauge 3 to be detected, and enabling the knocking hammer to tap the shell of the pointer pressure gauge 3 to be detected;
505, controlling the digital camera 8 to shoot the dial plate of the currently detected pointer type pressure gauge 3, and transmitting the dial plate image to the data acquisition and processing module to read the pointer type pressure gauge, so as to complete the indicated value measurement of the tapped pointer type pressure gauge 3 under the first pressure detection value;
step 506, controlling the shooting surface of the digital camera 8 to rotate back to the initial angle;
step 507, controlling the central point of the shooting surface of the digital camera 8 to move to the shooting work site e of the digital camera 8 corresponding to the next detected pointer type pressure gauge 3;
step 508, circulating the step 502 to the step 507 for N-2 times until indication values of N-1 detected pointer type pressure gauges 3 before and after tapping under the first pressure detection value are measured;
509, controlling the pressurizing table 1 to pressurize until the pressure value of the electronic standard meter 5 reaches the next pressure detection value, and controlling the central point of the shooting surface of the digital camera 8 to move to the shooting work site e of the digital camera 8 corresponding to the detected pointer type pressure gauge 3 in the step 303;
step 510, circulating the step 502 to the step 507 for N-1 times until indication values of N-1 detected pointer type pressure gauges 3 before and after tapping under the current pressure detection value are measured;
step 511, the steps 509 to 510 are circulated until the indicating values before and after tapping of the N-1 detected pointer pressure gauges 3 are measured under a plurality of sequentially increasing pressure detection values in the measuring range;
step 512, controlling the pressure increasing platform 1 to reduce the pressure step by step, and measuring indicating values of the N-1 detected pointer type pressure gauges 3 before and after tapping under a plurality of sequentially reduced pressure detection values in the measuring range;
and 513, calculating the maximum indicating value error, the maximum return error and the tapping displacement of the N-1 detected pointer type pressure gauges 3.
In this example, the maximum indicating error, the maximum return error, and the tap displacement were calculated according to the specifications of the measurement and calibration procedures of jjjg 52-2013 elastic element type pressure gauge, pressure vacuum gauge, and vacuum gauge.
In this embodiment, as shown in fig. 3, taking N as an example 4, the initial position of the bisector of the included angle between the laser lines of the two laser range finders 7 coincides with the negative half axis of the x axis, and the detected pointer pressure gauge 3 located in the third quadrant is taken as the detected pointer pressure gauge 3 beside the electronic standard meter 5 in step 202, so that the vertical rotating shaft 6 is manually controlled to rotate 45 ° counterclockwise, and it is determined that the detected pointer pressure gauge 3 is actually located in the third quadrant according to the rotation angle of the vertical rotating shaft 6, and the coordinates of the work site e, the autorotation angle θ and the autorotation direction of the digital camera, and the elongation of the telescopic tapping hammer mechanism are photographed by the digital camera 8 corresponding to the detected pointer pressure gauge 3 located in the third quadrant as follows:
step s1, calculating the coordinate (x) of point aa，ya) B coordinates of point (x)b，yb)；
xa＝-cosδ*lao，ya＝-sinδ*lao(ii) a Wherein delta is an acute angle included angle between a laser line passing through the o point and the a point and the x axis, and laoIs the length of line segment ao;
xb＝-cosσ*lbo，yb＝-sinσ*lbo(ii) a Wherein, sigma is the acute angle included angle between the laser line passing through the o point and the b point and the x axis, and lboIs the length of the line segment bo;
step s2, locating the laser point a and the laser point b on the straight line y1Has a linear equation of y1＝k1x1+c1Wherein, in the step (A),
when k is1When not equal to 0, the straight line y2Has a linear equation of y2＝k2x2+c2Wherein, in the step (A),
when k is1When equal to 0, the straight line y2Has a linear equation of x2＝xf(ii) a Wherein x isfIs the abscissa of the f point, yfIs the ordinate of the f point;
s3, when k1When not equal to 0, solving
Obtaining two intersection point coordinates by a binary quadratic equation, taking the intersection point positioned in the III quadrant as a shooting working site e of the digital camera 8 corresponding to the currently detected pointer type pressure gauge 3, and taking the coordinates as (x)e，ye) (ii) a The current extension of the telescopic hammer mechanism is
When k is1When 0, solve
Obtaining two intersection point coordinates by a binary quadratic equation, taking the intersection point positioned in the III quadrant as a shooting working site e of the digital camera 8 corresponding to the currently detected pointer type pressure gauge 3, and taking the coordinates as (x)e，ye) (ii) a The current extension of the telescopic hammer mechanism is
s4、
As shown in fig. 3, α > β and the detected pointer pressure gauge 3 is located in the third quadrant, so that the shooting surface of the digital camera 8 rotates counterclockwise by an angle θ;
the specific calculation process of the coordinates of the shooting work site e of the digital camera 8 corresponding to the detected pointer type pressure gauge 3 in the other quadrants, the autorotation angle theta and autorotation direction of the digital camera, and the elongation of the telescopic knocking hammer mechanism is similar to the process described above.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (8)
1. The utility model provides a pointer-type manometer is automatic calibration system in batches which characterized in that: the device comprises a pressurizing table (1), N pressure gauge mounting columns (2) arranged at the top of the pressurizing table (1), a camera positioning mechanism arranged at the center of the pressurizing table (1) and used for determining a shooting station of a digital camera (8), an annular track (4) sleeved on the outer periphery of the pressurizing table (1), a mobile digital camera assembly sliding along the annular track (4) and used for shooting a dial plate image of a detected pointer pressure gauge (3), and a telescopic knocking hammer mechanism sliding along the mobile digital camera assembly and used for knocking the shell of the detected pointer pressure gauge (3); an electronic standard meter (5) and N-1 pointer type pressure meters (3) to be detected are arranged on the N pressure meter mounting columns (2), wherein N is a positive integer and is not less than 4; the N pressure gauge mounting columns (2) are uniformly distributed in the circumferential direction by taking the vertical central line of the pressurizing table (1) as the center; the vertical central line of the pressurizing table (1) is coincided with the axis of the annular track (4);
the camera positioning mechanism comprises a vertical rotating shaft (6) inserted in the center of the pressurizing table (1), a rotation control mechanism used for controlling the vertical rotating shaft (6) to rotate, and two laser range finders (7) which are horizontally fixed on the vertical rotating shaft (6) and used for measuring the distance between the rear shell of the detected pointer type pressure gauge (3) and the vertical center line of the pressurizing table (1), wherein the laser lines of the two laser range finders (7) have included angles and are intersected with the vertical center line of the pressurizing table (1); the axis of the vertical rotating shaft (6) is coincided with the vertical central line of the pressurizing table (1);
the mobile digital camera component comprises a digital camera (8), a camera self-rotating seat which is in sliding fit with the annular track (4) and is used for controlling the rotation of the shooting surface of the digital camera (8), and a camera control module which is connected with the laser range finder (7) and is used for controlling the camera self-rotating seat and the digital camera (8) to work; the digital camera (8) is connected with a data acquisition and processing module for acquiring the picture data in the digital camera (8) in real time.
2. The batch automatic calibration system for pointer pressure gauges as claimed in claim 1, characterized in that: rotation control mechanism establishes including fixed cover on vertical pivot (6) and the joint at spacing ring (9) of pressurization platform (1) upper surface, set up in vertical pivot (6) bottom and with driven gear (10) of pressurization platform (1) lower surface contact, with driven gear (10) engaged with driving gear (11) and be used for controlling driving gear (11) pivoted laser rotation control motor (12), laser rotation control motor (12) are through L type mounting panel (13) and pressurization platform (1) bottom fixed connection.
3. The batch automatic calibration system for pointer pressure gauges as claimed in claim 1, characterized in that: the camera self-rotation seat comprises a walking wheel set (14) walking along an annular track (4), a bottom base (15) arranged on the walking wheel set (14), an annular base (16) arranged on the bottom base (15), a rotation control motor (17) arranged in the annular base (16), and a horizontal camera mounting plate (18) arranged on a rotation shaft of the rotation control motor (17), wherein a stable sliding block (19) inserted on the annular base (16) is fixedly arranged at the bottom of the horizontal camera mounting plate (18), an annular sliding groove for the stable sliding block (19) to slide is formed in the upper surface of the annular base (16), and a digital camera (8) and the horizontal camera mounting plate (18) are detachably connected through bolts; the shooting surface of the digital camera (8) is positioned right above the rotating shaft of the rotation control motor (17).
4. The batch automatic calibration system for pointer pressure gauges as claimed in claim 3, characterized in that: the telescopic knocking hammer mechanism comprises an electric telescopic rod (20) which is arranged on the horizontal camera mounting plate (18) and stretches towards the center direction of the pressurizing table (1), a hammer body driving mechanism arranged at the stretching end of the electric telescopic rod (20), and a knocking hammer driven by the hammer body driving mechanism;
the hammer body driving mechanism comprises an open mounting shell (21) used for mounting the knocking hammer, a first electromagnet (22) arranged on the inner wall of the open mounting shell (21) and used for adsorbing the knocking hammer to tap the shell of the pointer type pressure gauge (3) to be detected, and a second electromagnet (23) arranged on the opposite side of the first electromagnet (22) and used for adsorbing the knocking hammer far away from the pointer type pressure gauge (3) to be detected; the knocking hammer comprises a metal rod body (24) and a hammer head (25), wherein the bottom of the metal rod body (24) is hinged to the bottom of the open mounting shell (21), and the hammer head (25) is arranged at the top end of the metal rod body (24).
5. The batch automatic calibration system for pointer pressure gauges as claimed in claim 1, characterized in that: the laser lines of the two laser range finders (7) and the meter body central point of the detected pointer type pressure meter (3) are both positioned on the same horizontal plane.
6. The batch automatic calibration system for pointer pressure gauges as claimed in claim 1, characterized in that: the included angle of the laser lines of the two laser range finders (7) is 5-10 degrees.
7. The batch automatic calibration system for pointer pressure gauges as claimed in claim 4, characterized in that: the camera control module comprises a control circuit board, wherein a microcontroller is integrated on the control circuit board, the output ends of the electronic standard meter (5) and the two laser range finders (7) are connected with the microcontroller, and the digital camera (8), the electric telescopic rod (20), the first electromagnet (22), the second electromagnet (23), the walking wheel group (14), the rotation control motor (17) and the laser rotation control motor (12) are controlled by the microcontroller.
8. The batch automatic calibration system for pointer pressure gauges as claimed in claim 1, characterized in that: the data acquisition processing module comprises a computer and a PCI image acquisition card inserted in a PCI slot of the computer, and the digital camera (8) is connected with the PCI image acquisition card through a data bus.
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| CN202122655267.2U CN216012589U (en) | 2021-10-31 | 2021-10-31 | Pointer type pressure gauge batch automatic calibration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812931A (en) * | 2022-06-24 | 2022-07-29 | 江苏尔乐电气科技有限公司 | Instrument assembly quality with calibration function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812931A (en) * | 2022-06-24 | 2022-07-29 | 江苏尔乐电气科技有限公司 | Instrument assembly quality with calibration function |
| CN114812931B (en) * | 2022-06-24 | 2022-09-06 | 江苏尔乐电气科技有限公司 | Instrument assembly quality with calibration function |
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