CN110044272B - Laser width measurement centering device and using method - Google Patents
Laser width measurement centering device and using method Download PDFInfo
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- CN110044272B CN110044272B CN201910361785.8A CN201910361785A CN110044272B CN 110044272 B CN110044272 B CN 110044272B CN 201910361785 A CN201910361785 A CN 201910361785A CN 110044272 B CN110044272 B CN 110044272B
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Abstract
The invention relates to a laser ranging centering device and a using method thereof, wherein the device comprises a combined laser Q1, a combined laser Q2, a linear CCD, a fixing plate and a signal processor, wherein the combined laser Q1 is connected with the fixing plate through a first rotatable fixing device, the combined laser Q2 is connected with the fixing plate through a second rotatable fixing device, a CCD array is arranged above the combined laser Q1 and the combined laser Q2 and used for collecting laser points of the lasers on an object to be measured, the signal processor is respectively connected with the linear CCD and an angle sensor, the angle sensors respectively detect the angles of the laser points of the combined laser Q1 and the combined laser Q2 on the object to be measured, which are rotated from the initial positions to the edge of the object to be measured, and the signal processor is used for calculating the width of the object to be measured according to the data of the linear CCD and the angle sensor. According to the laser measurement width centering device, the labor and material resources are saved, the working efficiency is improved, and the working quality is improved.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a laser width measurement centering device and a using method thereof.
Background
In an industrial field, applications such as width measurement, position center line measurement, angle center line measurement and the like of various objects, equipment and products are widely applied, and the applications are applied to the industrial field. For example, when the width of an object is small, a ruler or a vernier caliper can be used, when the width of the object is large, a large-sized tape can be used, the width of a strip steel product can be measured at fixed points only by using a large instrument, when the width of various objects with required side widths changes greatly and the placement positions are uncertain, the width measurement by using the traditional method is complex in instruments, complex in process, and greatly wastes manpower and material resources, and the improvement of the working efficiency is not facilitated. For the same reason, the same problems are encountered in position center line measurement and angle center line measurement, and a small appliance cannot be applied to a large object, while a large appliance cannot adapt to the change of the position of the object; meanwhile, when a plurality of measured objects are used and different measuring instruments are used for conversion, human errors and instrument errors are superposed, and the measuring precision cannot be guaranteed. The existing technology is embarrassed in that no simple and effective instrument is provided, and the requirement of measuring different objects on site can be met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a width measuring centering device and a using method thereof, which are used for simply and conveniently measuring the width of an object to be measured.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a device in laser survey width, is including combination laser Q1, combination laser Q2, linear CCD, fixed plate, signal processor, combination laser Q1 is connected with the fixed plate through first rotatable fixing device, combination laser Q2 is connected with the fixed plate through the rotatable fixing device of second, combination laser Q1 sends the laser of orientation determinand and drives the angle of the laser of combination laser Q1 towards the determinand through the rotation of first rotatable fixing device, combination laser Q2 sends the laser of orientation determinand and drives the laser of combination laser Q2 towards the angle of determinand through the rotation of the rotatable fixing device of second, the CCD array sets up in combination laser Q1, Q2's top for the laser point of collection laser at the determinand, signal processor connects linear CCD, angle sensor respectively, angle sensor detects combination laser Q1, linear CCD, angle sensor respectively, The laser point of the combined laser Q2 on the object to be measured rotates from the initial position to the edge of the object to be measured, and the signal processor is used for calculating the width of the object to be measured according to the data of the linear CCD and the angle sensor.
The combined lasers Q1, Q2 are used to emit two lasers that cross each other and form a laser spot at the cross point.
The first rotatable fixing device and/or the second rotatable fixing device comprise a supporting rod, one end of the supporting rod is arranged on the fixing plate through a bearing so as to be horizontally rotatable, and the other end of the supporting rod is fixedly provided with a combined laser Q1 or Q2 so that laser emitted by the combined laser Q1 or Q2 is perpendicular to an object to be measured.
The end part of the supporting rod, which is provided with the combined laser, is provided with a knob, and the combined laser is rotationally adjusted by the knob to rotate along the supporting rod as an axis.
The signal processor is connected with the display panel and is used for displaying the width information and/or the rotation angle information of the measured object through the display panel.
Set up combination laser instrument Q3 between the combination laser instrument Q1 and the combination laser instrument Q2 of fixed plate, combination laser instrument Q3 sets up the laser that sends towards the determinand on the montant top, the notch is passed and the slider is connected to the bottom of montant, sets up the sliding tray that matches with the slider along Q1 to Q2 position on the fixed plate between combination laser instrument Q1, Q2 set up the position, be connected through spring T1 between montant and the bracing piece of first rotatable fixing device, be connected through spring T2 between montant and the bracing piece of the rotatable fixing device of second, and the tensile degree is unanimous when setting up of spring T1 and spring T2.
The fixed plate on set up the spacer pin that is used for injecing the slider removal, the tip of montant is provided with vertical pivot, and the carousel is equipped with to the rotatory cover of vertical pivot, combination laser instrument Q3 sets up on the carousel and the perpendicular to awaits measuring object direction and sends laser.
The rotation angle of the combined laser Q3 is collected by an angle sensor and transmitted to a signal processor.
And a rechargeable power supply is adopted to supply power for all electric components of the device, and the rechargeable power supply is connected with 220V commercial power through a power converter.
A method for using a device in laser width measurement,
step 1: the device is arranged in front of the object to be measured, so that the vertical laser emitted by the combined laser is irradiated on the object to be measured;
step 2: respectively rotating the combined lasers Q1 and Q2 to enable laser points formed by the emitted laser on the object to be tested to move to two end parts;
and step 3: in the moving process, the angle sensor detects the rotating angle signals of the combined lasers Q1 and Q2 in real time and transmits the rotating angle signals to the signal processor;
and 4, step 4: the signal processor identifies laser points at the edge of the object to be detected through the linear CCD, and then calls pre-stored data to combine with the rotating angle to obtain width data according to a calculation formula;
and 5: and displaying the calculated width on a display panel.
The invention has the advantages that: the width of the corresponding object to be measured is obtained through the laser mode, the structure is simple, the implementation mode is realized, the device is used for measuring the width through the laser, the labor and the material resources are saved, the working efficiency is increased, the working quality is improved, and the device can play a great role in various industrial fields.
Drawings
The contents of the expressions in the various figures of the present specification and the labels in the figures are briefly described as follows:
FIG. 1 is a schematic diagram of the principles of the present invention;
FIG. 2 is a side view of the combination lasers Q1, Q2 of the present invention;
FIG. 3 is a top view of the combination lasers Q1, Q2 of the present invention;
FIG. 4 is a schematic view of the mechanism of the present invention in which a laser assembly Q3 is mounted on a mounting plate;
FIG. 5 is a schematic view of the spring connection of the present invention;
FIG. 6 is a schematic diagram illustrating the calculation of the distance from the location of the laser Q1 to its landing point;
FIG. 7 is a schematic diagram of laser measurement width calculation according to the present invention.
The labels in the above figures are: 1. a fixing plate; 2. a bearing; 3. a support bar; 4. a combination laser Q1; 5. an object to be tested; 6. a knob; 7. a linear CCD; 8. a lens; 9. a combination laser Q2; 10. a combination laser Q3; 11. a slider; 12. a vertical rod; 13. a turntable; 14. a spring T1; 15. spring T2.
Detailed Description
The following description of preferred embodiments of the invention will be made in further detail with reference to the accompanying drawings.
As shown in fig. 1, a width measuring and centering device of laser, which can further realize the centering function, in one embodiment, in order to realize the width measuring function, the device includes a combined laser Q1, a combined laser Q2, a linear CCD, a fixing plate, and a signal processor, wherein the combined laser Q1 is connected to the fixing plate via a first rotatable fixing device, the combined laser Q2 is connected to the fixing plate via a second rotatable fixing device, the combined laser Q1 emits a vertical laser toward the object to be measured and vertically emits a laser toward the surface of the object to be measured, and the combined laser Q1 is driven by the rotation of the first rotatable fixing device to face the angle of the object to be measured, the combined laser Q2 emits a vertical laser toward the object to be measured and the combined laser Q2 is driven by the rotation of the second rotatable fixing device to face the angle of the object to be measured, the linear CCD array is arranged above the combined lasers Q1 and Q2 and used for collecting laser points formed by the lasers on an object to be detected, the signal processor is respectively connected with the linear CCD and the angle sensors, the angle sensors can be two, the angle sensors respectively detect the rotating angles of the laser points of the combined laser Q1 and the combined laser Q2 on the object to be detected from the initial positions to the edge of the object to be detected, and the signal processor is used for calculating the width of the object to be detected according to the data of the linear CCD and the angle sensors.
The combined lasers Q1 and Q2 are used for respectively emitting two mutually crossed lasers and forming laser points at the crossed points, and the brightness of the crossed laser points at the mountains of the object to be detected is strongest. The linear CCD camera collects and shoots laser points on the object to be measured after passing through the lens.
The first rotatable fixing device and the second rotatable fixing device are of the same structure, the sizes of the first rotatable fixing device and the second rotatable fixing device are the same, the positions of the combined lasers are the same, and laser points of emitted lasers are on the horizontal plane at the same height. As shown in fig. 2, for the schematic setting diagram of the laser Q1, the first rotatable fixing device includes a supporting rod 3, one end of the supporting rod 3 is disposed on the fixing plate through a bearing so as to be horizontally rotatable, and the other end of the supporting rod is fixedly disposed with the combined laser Q1 or Q2 so that the laser emitted by the combined laser Q1 or Q2 is perpendicular to the object to be measured. The supporting rod 3 is vertically arranged on the fixing plate 1, a mounting groove is arranged on the fixing plate, a bearing mechanism is arranged in the mounting groove, the bearing mechanism is connected with the bottom end of the supporting rod, a laser Q1 is fixedly arranged at the other end of the supporting rod, therefore, the supporting rod can rotate in a bearing mode due to the connection with the fixed plate in the bearing mode, so as to drive the laser to rotate, at the initial position, the laser emitted by the laser is vertically and horizontally emitted and vertically falls on the object to be measured, the upper end of the laser Q1 is provided with a CCD camera which collects the image signal of the laser spot on the object to be measured through an optical element, a filter is arranged in front of the acquisition end of the image signal of the CCD camera, the CCD camera can be connected on the fixed plate through the fixed mechanism to play a supporting role, of course, many different arrangements may be used to achieve the support and fixation of the CCD camera. The fixed position of the laser spot detector is mainly enough for clearly acquiring laser spot images.
In order to realize rotation, a knob 6 is arranged at the end part of the support rod, which is provided with the combined laser, and the combined laser is rotated along the support rod as an axis through the knob rotation. The top of the supporting rod is provided with a knob, and the supporting rod and the corresponding laser Q1 are driven to rotate under the action of the bearing through the rotation of the knob, so that the laser point of the laser on the object to be detected is moved. The knobs X1 and X3 are knobs for driving the Q1 and the Q3 to rotate respectively, so that the Q1 can only be rotated by the X1 and can only be rotated in the horizontal direction. Ensuring that Q3 can only be rotated by X3 and only turned in the horizontal direction.
As shown in fig. 3, which is a top view, the first rotatable fixing device and the second rotatable fixing device of the present application are all the same in structure, and the positions, heights, etc. of the lasers disposed thereon are all the same, so as to ensure that the connecting lines between the two laser points and the corresponding lasers are on the same horizontal plane.
The signal processor is connected with the display panel and is used for displaying the width information and/or the rotation angle information of the measured object through the display panel. The signal processor calculates corresponding width data according to a preset formula for calculating data, and then displays the width data through the display panel so as to achieve the purpose of calculating the width.
When the laser point detection device is used for measuring, firstly, the laser is perpendicular to an object to be measured at the initial position, then, the laser point falling on the object to be measured is moved to the edge of the object to be measured in a knob rotating mode, therefore, the edge of the object to be measured can be correspondingly found through a connecting line between the laser point on the object to be measured and the emitting point of the laser, and images acquired by CCD shooting are displayed through the display interface to conveniently confirm whether the laser point reaches the edge. In the moving process, the angle data of the rotation can be acquired in real time, when the rotation reaches the edge, a connecting line among a laser emission point, a laser falling point on the object to be detected and a CCD imaging point can form a triangle, because the CCD is arranged above the laser and is fixed in position, the distance between the laser point and the CCD is constant (measured first), the included angle is constant, as shown in figure 6, a model diagram is shown,
b2 is a Q1 laser emission point, B is a laser landing point on the object to be detected, and B1 is an imaging point on the CCD. B2 is fixed, B1 is fixed, and the position of a filter is fixed, so that the angle a2 is known, the length c1 of B2B1 is known, the laser rotates only in the horizontal position, the angle alpha 1 is known, and two internal angles are known, so that in delta ABC, the angle a3 is known, and the length c is calculated by the cosine law.
The cosine theorem: c2 cos (a3) + c1 cos (a1)
C2＝c1*cos(a2)+c*cos(a3)
The derivation shows: c [ c1 × cos (a2) × cos (a3) + c1 × cos (a1) ]/[1-cos (a3) × cos (a3) ]
Therefore, the length of one laser line is obtained, and when the laser line moves to the edge of the object to be detected, the corresponding laser length of Q1 and the laser length of Q2 are obtained.
When the laser points are respectively located at the edge of the object to be measured, the schematic diagram is shown in fig. 7, and in the horizontal plane, the width of the object to be measured can be represented by calculating the distance between two laser points.
In fig. 7, a is a laser emission point Q1, D is a laser landing point, B is a laser emission point Q3, and C is a laser landing point. The distance d from the point AB is fixed, the rotation angle β of Q1 is known from the angle sensor, the rotation angle γ of Q2 is known from the angle sensor, the length a (laser length) of AD is known, the length b (laser length) of BC is known, and the length c is obtained from the model of fig. 7.
In delta AOB, the angle OAB is 90-beta; the angle ABO is 90-gamma; α ═ β + γ.
Applying the cosine theorem: e ═ d × cos ([ OAB) + f × cos (α)
f＝e*cos(α)+d*cos(∠ABO)
The derivation shows:
e＝[d*cos(∠ABO)*cos(α)+d*cos(∠OAB)]/[1-cos(α)*cos(α)]
＝[d*cos(90-γ)*cos(β+γ)+d*cos(90-β)]/[1-cos(β+γ)*cos(β+γ)]
f＝[d*cos(∠OAB)*cos(α)+d*cos(∠ABO)]/[1-cos(α)*cos(α)]
＝[d*cos(90-β)*cos(β+γ)+d*cos(90-γ)]/[1-cos(β+γ)*cos(β+γ)]
then, in Δ DOC, it is known that the OD length is a + e, the OC length is b + f, and α ═ β + γ, and c is calculated.
Applying the cosine theorem:
c2＝(a+e)2+(b+f)2-2(a+e)(b+f)cos(β+γ)
then it follows: c ═ [ (a + e)2+(b+f)2-2(a+e)(b+f)cos(β+γ)]1/2Formula (1)
The distance between the two laser points is thus calculated. The signal processor can automatically calculate the width according to the rotating angle information, the existing angle and length of the base and the like, and then the formula is operated, and the width is displayed on a display screen, so that the function of measuring the width is realized.
In a preferred embodiment, in order to realize the centering function, a combined laser Q3 is arranged between a combined laser Q1 and a combined laser Q2 of a fixed plate, the combined laser Q3 is arranged at the top end of a vertical rod and emits laser light towards an object to be measured, the bottom end of the vertical rod passes through a notch to be connected with a sliding block, a sliding groove matched with the sliding block is arranged on the fixed plate between the arrangement positions of the combined lasers Q1 and Q2 along the positions from Q1 to Q2, the vertical rod is connected with a support rod of a first rotatable fixing device through a spring T1, the vertical rod is connected with a support rod of a second rotatable fixing device through a spring T2, and the stretching degrees of the spring T1 and the spring T2 are consistent when the fixed plate is arranged. The height of the vertical rod is consistent with that of the supporting rods, the position of the installed Q3 is also consistent, the emitted laser is correspondingly perpendicular to an object to be tested, the laser and the laser emitted by Q1 and Q3 are kept on the same horizontal plane, the initial position is arranged on a central point between Q1 and Q2, then the laser can move towards two sides according to the action of the spring, when the laser is arranged on the position of the central point, the vertical rod is respectively connected with two supporting rods through springs T1 and T2, and the spring is in an original length or slightly stretched state when in the initial position, so that in the initial position, the Q3 and the corresponding vertical rod are just at the central position between Q1 and Q2. After the knobs of Q1 and Q2 are respectively rotated, the corresponding knobs can correspondingly slide towards the directions of Q1 and Q2 under the same tension of the spring, and when the rotating angles of the knobs are the same, the laser falling point of Q3 is the central point of the object to be measured according to the self action of the spring.
In a preferred embodiment, a limiting pin for limiting the movement of the sliding block is arranged on the fixing plate, a vertical rotating shaft is arranged at the end of the vertical rod, a rotating disc is rotatably sleeved on the vertical rotating shaft, and the combined laser Q3 is arranged on the rotating disc and emits laser light perpendicular to the direction of the object to be tested. The position can be conveniently limited through the spacer pin, then the laser landing point that can adjust Q3 through the knob rotation, then manual regulation centering. The rotation angle of the combined laser Q3 is collected by an angle sensor and transmitted to a signal processor. The signal processor can collect and display through the turned angle, so that the initial position of the device is conveniently corrected, and before the device is used, the Q1 and the Q2 need to be rotated to the initial position with the angle of 0 through the knob for measurement.
In the above embodiment, the rechargeable power supply is used to supply power to the electric components of the device, and the rechargeable power supply is connected to the 220V commercial power through the power converter.
A method for using a device in laser width measurement,
step 1: the device is arranged in front of the object to be measured, so that the vertical laser emitted by the combined laser is irradiated on the object to be measured; before the device is used, whether the device is at the initial position or not is judged according to angle information displayed on a display panel, when the angle is 0, the device is at the initial position, and the light beams between laser falling points and laser emitting points emitted by Q1 and Q2 are perpendicular to an object to be measured;
step 2: after the device is placed in front of an object to be detected, the combined lasers Q1 and Q2 are respectively rotated to enable laser falling points formed by laser emitted by the combined lasers Q1 and Q2 on the object to be detected to respectively move to the edge of the object to be detected, whether the laser falling points are on the edge can be checked according to naked eyes, and the surface of the object to be detected can be confirmed through a display panel or directly checked;
and step 3: in the moving process, the angle sensor detects the rotating angle signals of the combined lasers Q1 and Q2 in real time and transmits the rotating angle signals to the signal processor;
and 4, step 4: the signal processor calls pre-stored data and combines the rotation angle to obtain width data according to a calculation formula; the calculation formula is as formula (1)
And 5: and displaying the calculated width on a display panel, thereby completing the width measurement.
In fig. 1, Q1 is a combined laser, which can be realized by using a single laser to send out a laser signal, or two identical line lasers can be arranged in parallel up and down, the voltage is 24V, the wavelength is 660nm, so as to ensure that the lasers are perpendicular to each other, a cross laser line is formed on the object to be measured, the intersection point is B, and the width edge of the object to be measured can be determined by moving the laser point B. Because the light spot of the laser emitted by a single laser is possibly not visual, the laser spot light emitted by the cross point is brighter and is easier to judge, photograph and collect by adopting a mode of combining the lasers;
and Q3, two identical line lasers are arranged in parallel up and down to ensure that the lasers are mutually vertical, a cross laser line is formed on the measured object, the intersection point is A, and the position of the center line of the measured object can be determined through the movement of the laser point A.
And Q2, two identical line lasers are arranged in parallel up and down to ensure that the lasers are mutually vertical, a cross laser line is formed on the measured object, the intersection point is C, and the width edge of the measured object can be determined by the movement of the laser point C.
X1 knob set on the top of the support bar can control the rotation of Q1, so that the point B reaches the width edge of the measured object.
X2 is a knob which can control the rotation of Q3, so that the point A reaches the center of the width of the measured object; meanwhile, the limiting pin can be in a pulled-up state, so that the Q2 can freely move in the horizontal direction.
X3 knob, which can control the rotation of Q3, so that the point C reaches the width edge of the measured object.
C1 angle sensor for detecting the rotation angle of Q1 and transmitting the corresponding parameters to the data processor.
C2 angle sensor for detecting the rotation angle of Q2 and transmitting the corresponding parameters to the data processor.
C3 angle sensor for detecting the rotation angle of Q3 and transmitting the corresponding parameters to the data processor.
T1 high precision connecting spring for connecting the lasers Q1 and Q3, the connecting point is the same, when the Q1 rotates, the Q2 in free state can rotate horizontally under the action of spring tension.
T2, high precision connecting spring, used to connect the laser Q3 and Q2, the connecting point position is the same, when the Q2 rotates, the Q3 in free state can rotate horizontally under the spring tension; the material property shape is completely the same as T1, the connection position is the same, and the function are the same.
D1, a current-voltage controller for controlling the output power of the Q1 laser to ensure that the B-point reflected laser is filtered and then is received by the linear CCD array.
D2, a current-voltage controller for controlling the output power of the Q2 laser to ensure that the A point reflected laser is filtered and then is received by the linear CCD array.
D3, a current-voltage controller for controlling the output power of the Q3 laser to ensure that the C point reflected laser is filtered and then is received by the linear CCD array.
A filter lens: the reflected laser is filtered, so that only the laser of the cross point reaching certain light intensity can be imaged on the CCD through the filter, and the angle position is fixed after installation.
Linear CCD array: the industrial linear camera can image the laser point on the measured object, provide the relevant parameters, such as the angle, the position, the distance between the signal processor and the filter, and the like, and the relevant parameters are relevant to the maximum value of the measured quantity, accurately calculate, and fix after installation.
The compound angle scale takes 0 degree as a central line, scales of 90 degrees are respectively arranged on the left and the right, and the deviation angle of Q2 can be visually seen; before the instrument is used, in a free state of Q2, whether the dial is at 0 ℃ can be seen, and whether the performance of the springs T1 and T2 is normal can be judged; the cross level meter is arranged on the angle scale, so that whether the detection equipment is in a horizontal position or not can be visually seen.
A signal processor: receiving angle signals of all the combined lasers; receiving an imaging signal on a linear CCD array; judging whether each signal is normal and effective; calculating related parameters and obtaining a measurement result; the required result is output to the display panel.
A display panel: the result output by the signal processor is displayed visually, so that a measurer can see the angle data of C1, C2 and C3, can see whether the signal on the CCD array is effective or not, and can see the distance data between the measuring points.
24V charging power supply: the laser is uniformly powered, and the maximum output power ensures that the laser can propagate for 20 meters in the air.
The power converter: the external AC220V power supply is converted into a 24V dc power supply, and the charging operation is performed thereon.
Two identical linear lasers are arranged and fixed up and down to form a laser combination Q1, the voltage of the lasers is 24V, the wavelength is 660nm, and the laser lines emitted by the two lasers are guaranteed to be vertically crossed on a measured object to form a cross laser shape. Each laser in the Q1 has an independent power supply, two lasers in the Q1 can be respectively and independently controlled by a current voltage regulator D1, the output laser intensity can be ensured to be randomly changed, the light intensity of the cross point is the strongest and is more than 30mw, the cross point is filtered by a lens, the final purpose is to ensure that only the light intensity of the cross point B of the laser emitted by the Q1 at a measured object can be received by the linear CCD array camera through the lens, and the position of a related signal B1 is transmitted to a data processor. The Q1 is installed on a fixing plate for precise machining of a machine tool, the center of the Q1 is fixed, the Q1 can be controlled to horizontally rotate on the fixing plate through a knob X1 and used for adjusting the position of the Q1 to find the measured wide edge of a measured object, an angle sensor C1 is installed and connected with the Q1 through a finish machining screw, and when the Q1 rotates, corresponding angle parameters are transmitted to a data processor through the C1. The data processor calculates the position of the light spot on the array and the rotation angle of Q1 by trigonometric function to obtain the distance to the object
The heads of Q1, Q2 and Q3 are connected at the same position by high-precision springs T1 and T2, and T1 is identical to T2. On the one hand, the rear part of the middle laser combination Q3 is connected with an angle sensor through a screw, on the other hand, the rear part of the middle laser combination Q3 is connected with a special angle scale through a screw, the angle scale takes 0 degree as the center, the scales of the left and the right are respectively 90 degrees, a cross level meter is arranged, an operator can visually see the deviation angle and whether the Q2 is horizontal or not, and whether each laser combination is in a zero position or not can be judged through the angle scale before measurement, and whether the T1 and the T2 meet the measurement accuracy requirements or not can be judged.
The signal processor is connected with the display panel, and can visually display various measurement data on the display panel. The laser power supply adopts a 24V rechargeable power supply, can be charged by a 220V power supply at any time, and is converted by a power converter in the middle.
By installing the laser device, the operations of adjusting D1, D2 and D3 to enable the laser to form B, A, C three points and be accurately captured by CCD (charge coupled device) to B1, A1 and C1 can be carried out, and the length data which can be displayed on the display panel at the moment can be calculated by the data processor at high speed, so that the measurement precision of the laser can reach the millimeter level. At the moment, a limiting pin corresponding to the knob X2 is lifted, so that the Q2 freely rotates, and the X1 is adjusted, so that the edge of the object to be measured at the point B is obtained; adjust X2 so that C is at the other edge. Due to the cross laser, the edge position can be visually confirmed, and the data processor changes the measured data in real time to obtain the width data of the object.
At the moment, under the combined action of the T1 and the T2, the length of the T1 is equal to that of the T2, the position of the Q3 on the object to be measured is an angle center line, and marks can be visually seen and marked on the object; looking at the display panel, the width and the corresponding angle information can be known and whether the laser falling point of Q3 is the middle point can be confirmed.
The technical scheme realizes the width measurement of the measured object and the confirmation of the position center line and the angle center line. The device is light and convenient, the effective distance of the laser can reach 20 meters, the laser can be transmitted in a straight line in the air, the measurement operation of the measured object with the diameter smaller than 28 meters can be satisfied in principle according to the rotation angle +/-45 degrees of the laser, and the field measurement of all general objects can be basically satisfied. The key points of the technology are as follows: (1) the intensity of the cross point is received by the CCD array while the other laser light is filtered. (2) The precision processing of the fixing plate device, the control device and the spring device is important, the spatial positions of all the elements are fixed after being installed, only the combined laser can rotate, and the left and right angles do not exceed 45 degrees. (3) The device after the installation is simple and compact, and the whole body can be moved at will, even the height can be measured in an inverted mode. (4) The width, position center line and angle center line of any object in the industrial field can be measured and confirmed.
The invention has the advantages that: the operation is convenient, the working efficiency and the measuring precision of unit personnel are improved, and the blank of the existing measuring instrument is made up. Direct benefit: the width and the center line of any article are measured under the original condition, the operation space is limited, the workload is large, the procedure is complicated, the human errors are easy to accumulate continuously, and the integral measurement precision cannot be effectively ensured; the laser width measuring centering device saves manpower and material resources, increases working efficiency, improves working quality, and can play a great role in various industrial fields.
Indirect benefit: making up the blank of the width measuring device, changing the contact measurement into non-contact measurement, and applying the non-contact measurement as a standard device to various industries; the method is simple to operate, ensures the precision, and has wide application prospect in various aspects such as manual measurement of products, equipment installation, position calibration and the like.
In addition, from the application range, the device can be popularized and applied to all corresponding matters needing width measurement, centering, height measurement and the like, is not limited to an industrial field, and greatly improves the working efficiency and the working capacity of related personnel.
It is clear that the specific implementation of the invention is not restricted to the above-described embodiments, but that various insubstantial modifications of the inventive process concept and technical solutions are within the scope of protection of the invention.
Claims (9)
1. A laser width measuring centering device is characterized in that: including combination laser Q1, combination laser Q2, linear CCD, fixed plate, signal processor, combination laser Q1 is connected with the fixed plate through first rotatable fixing device, combination laser Q2 is connected with the fixed plate through the rotatable fixing device of second, combination laser Q1 sends the laser towards the determinand and drives the angle of laser orientation determinand of combination laser Q1 through the rotation of first rotatable fixing device, combination laser Q2 sends the laser towards the determinand and drives the angle of laser towards the determinand of combination laser Q2 through the rotation of the rotatable fixing device of second, linear CCD sets up in combination laser Q1, Q2's top, is used for gathering the laser point of laser at the determinand, signal processor connects linear CCD, angle sensor respectively, angle sensor detects combination laser Q1, angle sensor respectively, The combined laser Q2 is used for calculating the width of the object to be measured according to the data of the linear CCD and the angle sensor;
set up combination laser instrument Q3 between the combination laser instrument Q1 and the combination laser instrument Q2 at the fixed plate, combination laser instrument Q3 sets up the laser that sends towards the determinand on the montant top, along Q1 to the sliding tray that Q2 position matches on the fixed plate between combination laser instrument Q1, Q2 set up the position, the notch is passed and the slider is connected to the bottom of montant, be connected through spring T1 between montant and the bracing piece of first rotatable fixing device, be connected through spring T2 between montant and the bracing piece of second rotatable fixing device, and the tensile degree is unanimous when setting up of spring T1 and spring T2.
2. The laser width measurement centering device according to claim 1, wherein: the combined lasers Q1, Q2 are used to emit two lasers that cross each other and form a laser spot at the cross point.
3. The laser width measurement centering device according to claim 1, wherein: the first rotatable fixing device and/or the second rotatable fixing device comprise a supporting rod, one end of the supporting rod is arranged on the fixing plate through a bearing and can rotate horizontally, and the other end of the supporting rod is fixedly provided with a combined laser Q1 or Q2 so that laser emitted by the combined laser Q1 or Q2 is perpendicular to an object to be measured.
4. A laser width measurement centering device according to claim 3, wherein: the end part of the supporting rod, which is provided with the combined laser, is provided with a knob, and the combined laser is rotationally adjusted by the knob to rotate along the supporting rod as an axis.
5. The laser width measurement centering device according to any one of claims 1 to 4, wherein: and the signal processor is connected with the display panel and is used for displaying the measured width information and/or rotation angle information of the object to be measured through the display panel.
6. A laser width measurement centering device according to any one of claim 1, wherein: the fixed plate on set up the spacer pin that is used for injecing the slider removal, the tip of montant is provided with vertical pivot, and the carousel is equipped with to the rotatory cover of vertical pivot, combination laser instrument Q3 sets up on the carousel and the perpendicular to awaits measuring object direction and sends laser.
7. The laser width measurement centering device according to claim 1, wherein: the rotation angle of the combined laser Q3 is collected by an angle sensor and transmitted to a signal processor.
8. The laser width measurement centering device according to any one of claims 1 to 4, wherein: a rechargeable power supply is adopted to supply power for all electric components of the device, and the rechargeable power supply is connected with 220V mains supply through a power converter.
9. The use method of the device for laser width measurement according to any one of claims 1 to 8, wherein:
step 1: the device is arranged in front of the object to be measured, so that the laser emitted by the combined laser vertically strikes the object to be measured;
step 2: respectively rotating the combined lasers Q1 and Q2 to enable laser points formed by the emitted laser on the object to be detected to move to the edge of the object to be detected;
and step 3: in the moving process, the angle sensor detects the rotating angle signals of the combined lasers Q1 and Q2 in real time and transmits the rotating angle signals to the signal processor;
and 4, step 4: the signal processor combines the prestored data with the rotating angle to obtain width data according to a calculation formula;
and 5: and displaying the calculated width on a display panel.
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| CN112284294A (en) * | 2020-09-27 | 2021-01-29 | 浙江大学 | Underwater multiband cross linear array laser three-dimensional scanning system |
| CN112269186B (en) * | 2020-10-09 | 2023-05-09 | 华中科技大学鄂州工业技术研究院 | Range-adjustable laser triangular distance measuring device and method |
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