A plumb coordinate instrument based on dot matrix CCD and a control method thereof

Abstract

The application provides a dot matrix CCD-based vertical coordinate instrument and a control method thereof, which comprises a light source device adapted to be fixed to a measuring base; a measurer corresponding to the light source device and adapted to be fixed to a measured object, the measurer being provided with a dot matrix CCD located in the emitting path of the light beam; and a controller electrically connected to the measurer, which calculates the relative position information of the measurer and the light source device according to the projection coordinates of the light beam projected onto the dot matrix CCD, and determines the relative position of the measured object relative to the measuring base according to the relative position information. The light beam is irradiated on the dot matrix CCD to form projection coordinates, so that the position sensing between the measurer and the light source device is generated, the relative position information is obtained by cooperating with the controller, the relative position of the measured object relative to the measuring base is determined, and the position deviation of the measured object is judged, thereby overcoming the defects of poor linearity of electric signal conversion and easy system error of the capacitive vertical coordinate instrument in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of large building observation, in particular to a vertical coordinate instrument based on dot matrix CCD and a control method thereof. BACKGROUND

[0002] The vertical coordinate instrument is used for measuring the change of horizontal deformation of hydraulic structures such as concrete dams, face dams and earth-rock dams, and is also suitable for measuring the horizontal deformation of civil buildings, towers, buildings, bridges and soil pits, and can realize the automation of horizontal displacement measurement. The vertical coordinate instrument uses a freely tensioned metal wire to establish a vertical reference, and is divided into two types of vertical line devices, i.e. a positive hammer and an inverted hammer, according to the fixing mode of the fixed end of the vertical reference. The vertical coordinate instrument measures the micro changes of the distance between the vertical reference and the measured object over time to understand the horizontal deformation of the measured object.

[0003] At present, the mature vertical coordinate instruments include photoelectric type, electromagnetic induction type and capacitive type. For the traditional photoelectric type vertical coordinate instrument, its structure is complex, the processing precision and installation requirements are high, and it needs to be maintained regularly during monitoring. For the electromagnetic induction type and capacitive type vertical coordinate instruments, there are defects of poor linearity of electric signal conversion and easy system error.

[0004] Taking the capacitive type vertical coordinate instrument as an example, it is designed according to the variable gap type capacitive sensing principle and is used for measuring the changes of displacement in two directions X and Y perpendicular to each other in the horizontal plane. When the position of the measuring point changes relative to the vertical line, the capacitance between the intermediate pole fixed on the vertical line and the parallel plate changes, and the displacement of the measuring point relative to the vertical line is calculated by measuring the capacitance ratio. Since the linear relationship between the position change of the measuring point relative to the vertical line and the capacitance change between the intermediate pole on the vertical line and the parallel plate is unstable, the linearity of electric signal conversion is poor, and system error is easily generated. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is to overcome the defects of poor linearity of electric signal conversion and easy system error of the capacitive type vertical coordinate instrument in the prior art, and to improve the anti-interference ability.

[0006] To this end, the present application provides a vertical coordinate instrument based on dot matrix CCD, comprising:

[0007] A light source device adapted to emit a light beam, the light source device being adapted to be fixed to a measuring base;

[0008] A measuring device corresponding to the light source device and adapted to be fixed to a measured object, the measuring device being provided with a dot matrix CCD located in the emission path of the light beam;

[0009] A controller electrically connected with the measurer, the controller calculates relative position information between the measurer and the light source according to the projection coordinates of the light beam projected to the dot array CCD, and determines the relative position of the measured object relative to the measuring base according to the relative position information.

[0010] Optionally, the dot array CCD has initial coordinates (X0, Y0), and the light beam emitted by the light source is adapted to irradiate on the dot array CCD and cover a plurality of pixel coordinates (X i ,Y i ) on the dot array CCD.

[0011] And the formula n is the number of covered pixel coordinates on the dot array CCD.

[0012] The measurement coordinates (X, Y) are calculated.

[0013] The relative horizontal displacement of the measured object relative to the measuring base is determined by the initial coordinates (X0, Y0) and the measurement coordinates (X, Y).

[0014] Optionally, the light beam emitted by the light source is adapted to form a circular spot on the dot array CCD, and the circular spot covers a plurality of pixel coordinates (X i ,Y i ), and the measurement coordinates (X, Y) are the center coordinates of the circular spot.

[0015] Optionally, the measurer is provided with a first induction coil and a first electronic control module electrically connected, the light source is provided with a second induction coil coupled with the first induction coil, and the first electronic control module can input current to the first induction coil to generate a magnetic field acting on the second induction coil.

[0016] Optionally, the first electronic control module can input current to the first induction coil to generate a stable magnetic field acting on the second induction coil, so as to generate a damping force for the horizontal relative motion of the second induction coil in the closed state.

[0017] Optionally, the first electronic control module can input current to the first induction coil to generate an alternating magnetic field acting on the second induction coil, and the light source is further provided with a storage battery adapted to be electrically connected with the second induction coil, and the second induction coil can generate an induced current for charging the storage battery under the action of the alternating magnetic field.

[0018] Optionally, the light source is further provided with a second electronic control module adapted to control the second induction coil to be in a closed state, or to be in an electrically connected state with the storage battery.

[0019] Optionally, the top end of the light source device is provided with a plumb line hung to the measuring base body, and the top end of the light source device is also provided with a leveling structure suitable for adjusting the horizontal state of the light source device, the leveling structure comprising a plurality of guide rails distributed in the circumferential direction and a plurality of counterweight sliders distributed in the plurality of guide rails.

[0020] Optionally, the top end of the light source device is also provided with a level indicator, and the light source device is suitable for displaying the horizontal state of the light source device, and the position of the counterweight slider is adjusted according to the horizontal state of the light source device.

[0021] The application also provides a control method of a plumb line coordinate instrument, the plumb line coordinate instrument being the plumb line coordinate instrument of any one of the above-mentioned solutions, and the control method comprising:

[0022] acquiring the total measurement time of the plumb line coordinate instrument;

[0023] determining the number of measurements of the plumb line coordinate instrument within the total measurement time by the single measurement time of the plumb line coordinate instrument;

[0024] calculating the average value of the measurement coordinates (X, Y) obtained in the several measurements.

[0025] The technical solution of the application has the following advantages:

[0026] The application provides a plumb line coordinate instrument based on a dot matrix CCD, comprising: a light source device suitable for emitting a light beam, the light source device being suitable for being fixed to a measuring base body; a measurer, the measurer being correspondingly arranged with the light source device and being suitable for being fixed to a measured object, the measurer being provided with a dot matrix CCD located in the emission path of the light beam; and a controller, the controller being electrically connected with the measurer, the relative position information between the measurer and the light source device being calculated according to the projection coordinates of the light beam projected onto the dot matrix CCD, and the relative position of the measured object relative to the measuring base body being determined according to the relative position information.

[0027] The application provides a plumb line coordinate instrument based on a dot matrix CCD, the projection coordinates formed on the dot matrix CCD when the light beam directly irradiates on the dot matrix CCD, so that the position sensing between the measurer and the light source device is generated, the relative position information between the measurer and the light source device is obtained by cooperating with the controller, and then the relative position of the measured object relative to the measuring base body is determined, so as to judge the position deviation of the measured object. The form that the projection coordinates formed on the dot matrix CCD are calculated by the controller to obtain the relative position information, so as to overcome the defects that the linearity of the electric signal conversion of the existing capacitive plumb line coordinate instrument is poor and system errors are easily generated; and the anti-interference ability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and all other drawings obtained by those of ordinary skill in the art without creative effort based on these drawings also belong to the protection scope of the present application.

[0029] Figure 1 A structure schematic diagram of a plumb coordinate instrument based on dot matrix CCD provided by the present application is shown in the figure.

[0030] Figure 2 A schematic diagram of a circular light spot formed by irradiation on the dot matrix CCD provided by the present application is shown in the figure.

[0031] Figure 3 A structure schematic diagram of a leveling structure provided by the present application is shown in the figure.

[0032] Explanation of reference signs:

[0033] 1, plumb;

[0034] 2, light source; 21, second induction coil; 22, light source part; 23, storage battery; 24, second electric control module; 25, leveling structure; 251, guide rail; 252, counterweight sliding block; 253, horizontal indicator; 26, tray; 27, sealing cover plate;

[0035] 3, measurer; 31, dot matrix CCD; 311, circular light spot; 32, first induction coil; 33, first electric control module; 34, glass cover plate; 35, CCD support table; 36, fixed base. Specific embodiments

[0036] The technical solutions of the present application will be described below in conjunction with the drawings. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0037] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] A plumb line coordinate instrument is used for long-term measurement of the horizontal deformation changes of hydraulic structures such as concrete dams, panel dams, and earth-rock dams. It is also suitable for measuring the horizontal deformation of civil and industrial buildings, towers, buildings, bridges, and foundation pits, and can easily automate horizontal displacement measurement. The plumb line coordinate instrument uses a freely tensioned metal wire to establish a vertical reference. Depending on the fixing method of the fixed end of the vertical reference, there are two types of plumb line devices: upright plumb and inverted plumb. The plumb line coordinate instrument understands the horizontal deformation of the measured object by measuring the minute changes in the distance between the vertical reference and the nearby measured object over time.

[0041] Currently, mature vertical coordinate measuring instruments include photoelectric, electromagnetic induction, and capacitive types. Traditional photoelectric vertical coordinate measuring instruments have complex structures, high processing precision and installation requirements, and require regular maintenance during monitoring. Electromagnetic induction and capacitive vertical coordinate measuring instruments suffer from poor linearity in electrical signal conversion, which can easily lead to systematic errors.

[0042] Taking a capacitive vertical coordinate instrument as an example, it is designed based on the principle of variable gap capacitive induction and is used to measure the changes in displacement in the X and Y directions that are perpendicular to each other in the horizontal plane. When the position of the measuring point relative to the vertical line changes, the capacitance between the intermediate pole and the parallel plate fixed on the vertical line changes. By measuring the capacitance ratio, the displacement of the measuring point relative to the vertical line is calculated. Since the linear relationship between the change in the position of the measuring point relative to the vertical line and the change in capacitance between the intermediate pole and the parallel plate on the vertical line is unstable, the linearity of the electrical signal conversion is poor, which easily leads to systematic errors.

[0043] Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor linearity of electrical signal conversion in the prior art of capacitive vertical coordinate instruments, which easily leads to systematic errors; and to improve anti-interference ability.

[0044] Example 1

[0045] This embodiment provides a vertical coordinate instrument based on a dot matrix CCD, such as... Figures 1-3As shown, it comprises: a light source 2, a measurer 3, a controller, a dot matrix CCD 31, etc.

[0046] The light source 2 is adapted to emit a light beam, and the light source 2 is adapted to be fixed to a measurement base.

[0047] The measurer 3 is arranged corresponding to the light source 2 and is adapted to be fixed to a measured object, and the measurer 3 is provided with a dot matrix CCD 31 located in the emission path of the light beam.

[0048] Specifically, the dot matrix CCD 31 is composed of a plurality of coordinate information, and when the light beam emitted by the light source 2 is adapted to be irradiated on the dot matrix CCD 31, it provides position information for subsequent measurement of the displacement amount of the measured object. Figure 2 As shown, the dot matrix CCD 31 is composed of a plurality of coordinate information, and when the light beam emitted by the light source 2 is adapted to be irradiated on the dot matrix CCD 31, it provides position information for subsequent measurement of the displacement amount of the measured object.

[0049] The controller is electrically connected with the measurer 3, calculates the relative position information of the measurer 3 and the light source 2 according to the projection coordinates of the light beam projected to the dot matrix CCD 31, and determines the relative position of the measured object relative to the measurement base according to the relative position information.

[0050] Specifically, as shown in the figure, Figure 2 When the light beam emitted by the light source 2 is adapted to be irradiated on the dot matrix CCD 31, the projection coordinates are formed on the dot matrix CCD 31, and the controller obtains the relative position information of the measurer 3 and the light source 2 through the projection coordinates, so as to determine the relative position of the measured object relative to the measurement base according to the relative position information, so as to judge the position deviation of the measured object.

[0051] The embodiment provides a dot matrix CCD-based vertical coordinate instrument. The projection coordinates formed on the dot matrix CCD 31 when the light beam directly irradiates on the dot matrix CCD 31 enable the position sensing between the measurer 3 and the light source 2, and the controller obtains the relative position information of the measurer 3 and the light source 2, and then determines the relative position of the measured object relative to the measurement base, so as to judge the position deviation of the measured object. The projection coordinates formed on the dot matrix CCD 31 are used to calculate the relative position information by the controller, so as to overcome the defects of poor linearity of electrical signal conversion and easy system error of the capacitive vertical coordinate instrument in the prior art, and improve the anti-interference ability.

[0052] On the basis of the above-mentioned embodiment, as a further defined embodiment, as shown in the figure, Figure 1 , Figure 2 , Figure 3 The dot matrix CCD 31 has an initial coordinate (X0, Y0), the light beam emitted by the light source 2 is adapted to be irradiated on the dot matrix CCD 31, and covers a plurality of pixel coordinates (X i ,Y i ) on the dot matrix CCD 31.

[0053] And the formula n is the number of covered pixel coordinates on the lattice CCD 31;

[0054] The measured coordinates (X, Y) are calculated;

[0055] The relative horizontal displacement of the measured object relative to the measuring base is determined from the initial coordinates (X0, Y0) and the measured coordinates (X, Y).

[0056] Specifically, the lattice CCD 31 has initial coordinates (X0, Y0) which are the reference position where the position between the measuring base and the measured object has not been displaced, and when the light beam emitted by the light source 2 is irradiated on the lattice CCD 31, it covers a plurality of pixel coordinates (X i ,Y i ) on the lattice CCD 31. The controller arranges each pixel coordinate (X i ,Y i ) from 1 to i, and obtains the respective average values of the horizontal and vertical coordinates of the plurality of pixel coordinates (X i ,Y i ) by the formula , thereby calculating the actual measured coordinates (X, Y). The positional relationship between the initial coordinates (X0, Y0) and the measured coordinates (X, Y) is used as the relative position information of the measurer 3 and the light source 2, thereby determining the relative position of the measured object relative to the measuring base, and judging the position displacement of the measured object.

[0057] Further, the difference between the horizontal coordinate X of the measured coordinates and the horizontal coordinate X0 of the initial coordinates is ΔX, and the difference between the vertical coordinate Y of the measured coordinates and the vertical coordinate Y0 of the initial coordinates is ΔY, and the relative horizontal displacement of the measured object relative to the measuring base is determined by ΔX and ΔY.

[0058] Further, the coverage range formed by the plurality of pixel coordinates (X i ,Y i ) on the lattice CCD 31 covered by the light beam emitted by the light source 2 is determined by the form of the light beam, and the specific shape of the light beam covering on the lattice CCD 31 is not limited in the embodiment.

[0059] On the basis of the above-mentioned embodiment, as a preferred embodiment, as shown in Figure 2 , the light beam emitted by the light source 2 is adapted to be irradiated on the lattice CCD 31 to form a circular light spot 311, and the circular light spot covers a plurality of pixel coordinates (X i ,Y i ), and the measured coordinates (X, Y) are the center coordinates of the circular light spot 311.

[0060] Specifically, the light beam is irradiated on the lattice CCD 31 to form a circular coverage range, thereby obtaining a plurality of pixel coordinates (Xi i The circular light spot 311 is in the form of a circle, and the measurement coordinates (X, Y) are taken as the coordinates of the center of the circular light spot 311. A plurality of pixel coordinates (X i i The pixel coordinates of the lattice CCD 31 are more evenly taken, and the measurement coordinates (X, Y) calculated by the controller according to the formula are more accurate.

[0061] Based on the above-mentioned embodiments, as a further defined embodiment, as shown in Figure 1 The measurer 3 is provided with a first induction coil 32 and a first electric control module 33 connected thereto, the light source device 2 is provided with a second induction coil 21 coupled with the first induction coil 32, and the first electric control module 33 can input current to the first induction coil 32 to generate a magnetic field acting on the second induction coil 21.

[0062] Specifically, by setting the first induction coil 32 on the measurer 3 and the second induction coil 21 on the light source device 2, and inputting current to the first induction coil 32 by the first electric control module 33, the magnetic field of the second induction coil 21 is generated, and on this basis, the form of the current input to the first induction coil 32 is controlled by the first electric control module 33, and the form of the magnetic field of the second induction coil 21 is changed.

[0063] Based on the above-mentioned embodiments, as a further defined embodiment, as shown in Figure 1 The first electric control module 33 can input current to the first induction coil 32 to generate a stable magnetic field acting on the second induction coil 21 to generate a damping force for the horizontal relative motion of the second induction coil 21 in the closed state.

[0064] Specifically, in the measurement state, the current is input to the first induction coil 32 by the control of the first electric control module 33, and more specifically, the direct current is input to the first induction coil 32, so that the first induction coil 32 generates a stable magnetic field to act on the second induction coil 21. At this time, the second induction coil 21 is in a closed state, and under the action of the stable magnetic field of the first induction coil 32, the second induction coil 21 has a tendency to avoid cutting the magnetic induction lines in the stable magnetic field of the first induction coil 32, so that the second induction coil 21 generates a damping force for the horizontal relative motion, that is, the second induction coil 21 will receive a resistance in the opposite direction when moving in the stable magnetic field. Thus, the stability of the plumb coordinate instrument based on the lattice CCD when used in the measurement state is ensured, that is, the light source device 2 is kept stable to facilitate accurate measurement, and the influence of external environmental factors such as slight wind disturbance on measurement is avoided, and the anti-interference ability of the plumb coordinate instrument based on the lattice CCD is enhanced.

[0065] ​​On the basis of the above-mentioned embodiment, as a further defined embodiment, as shown in Figure 1 The first electric control module 33 can input current to the first induction coil 32 to generate an alternating magnetic field acting on the second induction coil 21, and the light source device 2 is further provided with a storage battery 23 adapted to be electrically connected with the second induction coil 21, and the second induction coil 21 can generate an induced current for charging the storage battery 23 under the action of the alternating magnetic field.

[0066] Specifically, in the non-measuring state, the first electric control module 33 controls the first induction coil 32 to input current, and more specifically, alternating current, so that the first induction coil 32 generates an alternating magnetic field to act on the second induction coil 21. At this time, the second induction coil 21 is in an electrically connected state with the storage battery 23. Under the action of the alternating magnetic field of the first induction coil 32, the second induction coil 21 cuts the magnetic induction lines in the alternating magnetic field of the first induction coil 32, thereby generating an induced current in the second induction coil 21. Since the second induction coil 21 is electrically connected with the storage battery 23, the induced current can charge the storage battery 23, and further charge the light source 22 in the light source device 2 through the storage battery 23, so as to meet the outdoor use requirement of the dot matrix CCD vertical coordinate instrument.

[0067] On the basis of the above-mentioned embodiment, as a further defined embodiment, as shown in Figure 1 The light source device 2 is further provided with a second electric control module 24 adapted to control the second induction coil 21 to be in a closed state, or to be in an electrically connected state with the storage battery 23.

[0068] Specifically, the second electric control module 24 controls the second induction coil 21. In the measuring state, the second electric control module 24 controls the second induction coil 21 to be in a closed state, so as to facilitate the second induction coil 21 to generate a horizontal relative motion damping force, thereby ensuring the stability of the dot matrix CCD vertical coordinate instrument when it is used in the measuring state. In the non-measuring state, the second electric control module 24 controls the second induction coil 21 to be electrically connected with the storage battery 23, so as to facilitate the generation of an induced current in the second induction coil 21, and further charge the light source 22 in the light source device 2 through the storage battery 23, so as to meet the outdoor use requirement of the dot matrix CCD vertical coordinate instrument.

[0069] On the basis of the above-mentioned embodiment, as a further defined embodiment, as shown in Figure 3 The top end of the light source device 2 is provided with a vertical line 1 hung to a measuring base body, and the top end of the light source device 2 is further provided with a leveling structure 25 adapted to adjust the horizontal state of the light source device 2, and the leveling structure 25 comprises a plurality of guide rails 251 distributed in the circumferential direction and a plurality of counterweight sliding blocks 252 distributed in the plurality of guide rails 251.

[0070] Specifically, the light source device 2 is connected with the measuring base through the vertical line 1, facilitating the subsequent measurement operation of the vertical coordinate instrument of the dot matrix CCD.

[0071] Further, in the leveling structure 25, the light source device 2 is leveled by the cooperation of the multiple counterweight sliding blocks 252 and the multiple guide rails 251, ensuring that the light source device 2 is in a horizontal state before the measurement starts, thereby ensuring the accuracy of the subsequent measurement operation of the vertical coordinate instrument of the dot matrix CCD.

[0072] Further, as shown in the drawings, in the embodiment, three guide rails 251 are arranged at the top end of the light source device 2, and the three guide rails 251 are uniformly arranged at an angle of 120 degrees in the circumferential direction and are paired with three sets of counterweight sliding blocks 252. Figure 3

[0073] On the basis of the above-mentioned embodiment, as a further defined embodiment, as shown in the drawings, the top end of the light source device 2 is further provided with a horizontal indicator 253, and the light source device 2 is adapted to display the horizontal state of the light source device 2, and the position of the counterweight sliding block 252 is adjusted according to the horizontal state of the light source device 2. Figure 3

[0074] Specifically, the horizontal state of the light source device 2 is determined by the horizontal indicator 253, and the specific implementation form of the horizontal indicator 253 can be a horizontal bubble indicator.

[0075] On the basis of the above-mentioned embodiment, as a further defined embodiment, as shown in the drawings, the light source device 2 comprises a tray 26 and a sealing cover plate 27 connected with each other, the tray 26 is used to carry the second induction coil 21, the battery 23 and the second electronic control module 24, and the sealing cover plate 27 is arranged on the tray 26 to ensure the sealing property of the internal structure and avoid interference of external factors on the internal structure; the measurer 3 comprises a CCD support table 35 and a fixed base 36 connected with each other, the fixed base 36 is used to carry the first induction coil 32 and the first electronic control module 33, and the CCD support table 35 is arranged on the fixed base 36. Figure 1 Further, as shown in the drawings, the top of the CCD support table 35 is formed with a recessed mounting position, and the dot matrix CCD 31 is mounted in the recessed mounting position, and a glass cover plate 34 is arranged above the dot matrix CCD 31.

[0076] Figure 1

[0077] Embodiment 2

[0078] The embodiment provides a control method of a vertical coordinate instrument, the vertical coordinate instrument being the vertical coordinate instrument provided in the embodiment 1, and the control method comprising:

[0079] acquiring a total measurement time of the vertical coordinate instrument; ​​​​

[0080] The number of measurements of the vertical coordinate instrument in the total measurement time is determined by the single measurement time length of the vertical coordinate instrument;

[0081] The average of the measurement coordinates (X, Y) obtained in several measurements is calculated.

[0082] Specifically, the number of measurements is determined by the total measurement time and the single measurement time to obtain a plurality of measurement coordinates (X, Y), and the horizontal and vertical coordinates of the plurality of measurement coordinates (X, Y) are averaged to obtain the final measurement coordinates, thereby further enhancing the anti-interference ability of the point array CCD-based vertical coordinate instrument.

[0083] Obviously, the above embodiments are only examples for the purpose of clarity, and are not limiting of the embodiments. Based on the above description, other different forms of changes or variations can be made by those of ordinary skill in the art. All embodiments do not need to be exhausted here, and obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A dot-matrix CCD-based vertical coordinate instrument, characterized by, include: A light source (2) is adapted to emit a light beam, and the light source (2) is adapted to be fixed to the measuring substrate; Measuring device (3), which is correspondingly set with the light source (2) and is adapted to be fixed to the object being measured, wherein the measuring device (3) is provided with a dot matrix CCD (31) located in the emission path of the light beam. The controller is electrically connected to the measuring device (3), calculates the relative position information between the measuring device (3) and the light source (2) based on the projection coordinates of the beam projected onto the dot matrix CCD (31), and determines the relative position of the object under test relative to the measuring substrate based on the relative position information; The measuring device (3) is provided with a first induction coil (32) and a first electronic control module (33) electrically connected. The light source (2) is provided with a second induction coil (21) coupled to the first induction coil (32). The first electronic control module (33) can input current to the first induction coil (32) to generate a magnetic field acting on the second induction coil (21). The first electronic control module (33) can input current to the first induction coil (32) to generate a stable magnetic field acting on the second induction coil (21) to generate a damping force for horizontal relative motion of the second induction coil (21) in the closed state.

2. The dot-matrix CCD-based plummet coordinate instrument according to claim 1, characterized in that, The dot array CCD (31) has initial coordinates (X0, Y0), and the light beam emitted by the light source (2) is adapted to irradiate on the dot array CCD (31) and cover several pixel coordinates (X i ,Y i ) on the dot array CCD (31); and by the formula , , n is the number of covered pixel coordinates on the lattice CCD (31); The measured coordinates (X, Y) are calculated; The relative horizontal displacement of the object being measured relative to the measuring substrate is determined by the initial coordinates (X0, Y0) and the measured coordinates (X, Y).

3. The dot-matrix CCD-based plummet coordinate meter according to claim 2, characterized in that, The light beam emitted by the light source (2) is adapted to be irradiated on the dot matrix CCD (31) to form a circular light spot (311) covering a plurality of the pixel coordinates (X i ,Y i ), the measurement coordinates (X, Y) being the coordinates of the center of the circular light spot (311).

4. The dot-matrix CCD-based plummet coordinate instrument according to claim 1, characterized in that, The first electronic control module (33) can input current to the first induction coil (32) to generate an alternating magnetic field acting on the second induction coil (21). The light source (2) is also provided with a battery (23) suitable for electrical connection with the second induction coil (21). The second induction coil (21) can generate an induced current to charge the battery (23) under the action of the alternating magnetic field.

5. The dot-matrix CCD-based plummet coordinate meter according to claim 4, characterized in that, The light source (2) is also provided with a second electronic control module (24), which is adapted to control the second induction coil (21) to be in a closed state, or to make the second induction coil (21) electrically connected to the battery (23).

6. The dot-matrix CCD-based plummet coordinate instrument according to any one of claims 1-5, characterized in that, The top of the light source (2) is provided with a vertical line (1) that is suspended to the measuring base. The top of the light source (2) is also provided with a leveling structure (25) suitable for adjusting the horizontal state of the light source (2). The leveling structure (25) includes multiple guide rails (251) distributed along the circumference and multiple counterweight sliders (252) distributed on the multiple guide rails (251).

7. The dot-matrix CCD-based plummet coordinate meter according to claim 6, characterized in that, A level indicator (253) is also provided at the top of the light source (2). The light source (2) is adapted to display the level state of the light source (2) and adjust the position of the counterweight slider (252) according to the level state of the light source (2).

8. A control method of a vertical line coordinate instrument, characterized by, The perpendicular coordinate instrument is the perpendicular coordinate instrument according to claim 2 or 3, and the control method includes: Obtain the total measurement time of the vertical coordinate instrument; determining the number of measurements of the vertical coordinate instrument within the total measurement time by means of the length of the single measurement of the vertical coordinate instrument; calculating the average of the measurement coordinates (X, Y) obtained in several measurements.

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