CN113093229A - GNSS measurement precision detector and use method - Google Patents
GNSS measurement precision detector and use method Download PDFInfo
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- CN113093229A CN113093229A CN202110497414.XA CN202110497414A CN113093229A CN 113093229 A CN113093229 A CN 113093229A CN 202110497414 A CN202110497414 A CN 202110497414A CN 113093229 A CN113093229 A CN 113093229A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a GNSS measurement accuracy detector, which comprises: a GNSS module; the GNSS module is connected to the lifting measuring mechanism, and the lifting measuring mechanism is used for measuring the lifting height of the GNSS module; the GNSS module is connected to the lifting measuring mechanism through the first horizontal measuring mechanism, and the first horizontal measuring mechanism is used for measuring the displacement of the GNSS module in the first horizontal direction; and the GNSS module is connected with the second horizontal measuring mechanism, the second horizontal measuring mechanism is used for measuring the displacement of the GNSS module in a second horizontal direction, and the second horizontal direction is vertical to the first horizontal direction. The problem that in the prior art, carrying is inconvenient and a measuring process is long and not visual is solved.
Description
Technical Field
The invention relates to the technical field of GNSS devices, in particular to a GNSS measurement precision detector and a using method thereof.
Background
The GNSS module can be used for positioning the three-dimensional coordinate of the current GNSS module, in the process of research and development, manufacture or sale of GNSS equipment, the positioning accuracy of the GNSS module is often required to be detected or demonstrated, the prior art manually moves the GNSS module, then the moving distance of the GNSS module is manually measured, the positioning accuracy of the GNSS module is detected by comparing the coordinate position change measured by the GNSS and the coordinate position change measured by the GNSS, and the problems existing in the prior art are that:
1) when the GNSS module is moved, an object is often required to be supported to place the GNSS module, so that the GNSS module is placed at a specified position, but for selling scenes which need to be demonstrated outdoors, carrying a pile of supporting blocks is very inconvenient;
2) the measurement process is long and unintuitive, and the audience is difficult to generate interest, which is disadvantageous for the sale of products.
Disclosure of Invention
In order to solve the defects and shortcomings of the prior art, the invention aims to provide a GNSS measurement precision detector and a using method thereof.
The technical scheme of the invention is as follows: a GNSS measurement accuracy detector comprising:
a GNSS module;
the GNSS module is connected to the lifting measuring mechanism, and the lifting measuring mechanism is used for measuring the lifting height of the GNSS module;
the GNSS module is connected to the lifting measuring mechanism through the first horizontal measuring mechanism, and the first horizontal measuring mechanism is used for measuring the displacement of the GNSS module in the first horizontal direction;
and the GNSS module is connected with the second horizontal measuring mechanism, the second horizontal measuring mechanism is used for measuring the displacement of the GNSS module in a second horizontal direction, and the second horizontal direction is vertical to the first horizontal direction.
Further, the lift measurement mechanism includes:
a base;
one end of the first screw rod is rotatably connected to the upper surface of the base through a bearing, and the first screw rod is parallel to the upper surface of the base;
the first knob is cylindrical, the diameter of the first knob is larger than that of the first screw rod, the first knob is coaxial with the first screw rod, and the first knob is fixedly connected to the upper end of the first screw rod;
the lower end of the vertical scale is fixedly connected to the upper surface of the base, and the vertical scale is parallel to the first screw rod;
the GNSS module is connected on the lifting platform, and the lifting platform is the rectangle, and the lifting platform wherein two minutes are equipped with first screw and measuring aperture respectively, first screw and first lead screw phase-match, first lead screw threaded connection at first screw, measuring aperture and vertical scale phase-match, vertical scale sliding connection is in the measuring aperture.
Further, the lift measurement mechanism further includes:
the scale cone is fixedly connected to the lower portion of the first screw rod, the diameter of the bottom face of the scale cone is larger than that of the first screw rod, the scale cone is coaxial with the first screw rod, the lower surface of the scale cone is attached to the upper surface of the base, a first scale is arranged on the side surface, close to the base, of the scale cone, and the first scale divides one circle of the scale cone into 50 parts;
the first indicating needle is fixedly connected to the upper surface of the base, the width of the needle point of the first indicating needle is smaller than the first scale minimum scale, and the needle point of the first indicating needle is positioned on the edge of the lower surface of the scale cone;
the screw pitch of the first screw rod is 0.5 mm.
Further, the first leveling mechanism includes:
the GNSS module is fixedly connected to the upper surface of the horizontal moving block, the horizontal moving block is provided with a second screw hole and a third screw hole, the second screw hole and the third screw hole are perpendicular to each other and do not intersect, the central axis of the second screw hole is perpendicular to the Z axis of the GNSS module, and the central axis of the third screw hole is perpendicular to the Z axis of the GNSS module;
the first sliding grooves comprise two first sliding grooves which are arranged on the edges of two opposite sides of the lifting platform, the two first sliding grooves are parallel to each other, and the side surface of one first sliding groove is provided with a first horizontal direction scale along the length direction of the first sliding groove;
the first sliding blocks are matched with the first sliding grooves, the two first sliding blocks are respectively connected in the two first sliding grooves in a sliding mode, a first rotating hole perpendicular to the first sliding grooves is formed in each first sliding block, a coaxial bearing is fixedly connected in each first rotating hole, and the central axis of each first rotating hole and the central axis of each second screw hole are located on the same plane perpendicular to the central axis of the first screw rod;
two ends of the second screw rod are fixedly connected in the first screw holes of the two first sliding blocks through bearings, the second screw rod is matched with the second screw hole, and the second screw rod is in threaded connection in the second screw hole;
the second leveling mechanism includes:
the two second sliding grooves are formed in the edges of two opposite sides of the lifting platform and are perpendicular to the first sliding grooves, the two second sliding grooves are parallel to each other, and second horizontal direction scales along the length direction of the second sliding grooves are arranged on the side surface of one second sliding groove;
the second sliding blocks are matched with the second sliding grooves and are respectively connected in the two second sliding grooves in a sliding manner, second rotary holes perpendicular to the second sliding grooves are formed in the second sliding blocks, coaxial bearings are fixedly connected in the second rotary holes, and the central axes of the second rotary holes and the central axis of the third screw hole are located on the same plane perpendicular to the central axis of the first screw rod;
and two ends of the third screw rod are fixedly connected in the second screw holes of the two second sliding blocks through bearings, the third screw rod is matched with the third screw hole, and the third screw rod is in threaded connection in the third screw hole.
Further, the first leveling mechanism further includes:
the first scale column is fixedly connected to the end part, close to the first horizontal direction scale, of the second screw rod, the first scale column is coaxial with the second screw rod, a second scale is arranged on the side surface, close to the first sliding block, of the first scale column, and the second scale divides one circle of the first scale column into 50 parts;
the second pointer is fixedly connected to the upper surface of the first sliding block, the width of the needle point of the second pointer is smaller than the minimum scale of the second scale, and the needle point of the second pointer is positioned on the edge of the first sliding block close to the first scale column;
the pitch of the second screw rod is 0.5 mm;
the second leveling mechanism further comprises:
the second scale column is fixedly connected to the end part, close to the second horizontal direction scale, of the third screw rod, the second scale column is coaxial with the third screw rod, a third scale is arranged on the side surface, close to the second sliding block, of the second scale column, and the third scale divides one circle of the second scale column into 50 parts;
the third pointer is fixedly connected to the upper surface of the second sliding block, the width of the needle point of the third pointer is smaller than the third scale minimum scale, and the needle point of the third pointer is positioned at the edge of the second sliding block close to the second scale column;
the screw pitch of the third screw rod is 0.5 mm.
Further, still include:
a controller;
the display is electrically connected with the controller;
the first laser range finder is arranged on the upper surface of the base, laser emitted by the first laser range finder irradiates the lower surface of the lifting platform, the laser emission direction of the first laser range finder is parallel to the central axis of the first screw rod, and the first laser range finder is electrically connected with the controller;
the second laser range finder is arranged at the end part of the first sliding chute, the laser emission direction of the second laser range finder is parallel to the first sliding chute, laser emitted by the second laser range finder irradiates the surface of the first sliding block, and the second laser range finder is electrically connected with the controller;
and the third laser range finder is arranged at the end part of the second sliding groove, the laser emission direction of the third laser range finder is parallel to the second sliding groove, the laser emitted by the third laser range finder irradiates the surface of the second sliding block, and the third laser range finder is electrically connected with the controller.
Further, still include:
the angle measuring device is arranged between the scale cone and the base, the angle measuring device is arranged between the first sliding block and the first scale column, the angle measuring device is arranged between the second sliding block and the second scale column, and the angle measuring device is electrically connected with the controller.
Further, the angle measuring device includes:
the first capacitance measuring module is electrically connected with the controller;
the second capacitance measuring module is electrically connected with the controller;
the first fixed capacitor plate is made of metal and is in a semicircular ring shape, and the first fixed capacitor plate is electrically connected with the first capacitor measuring module;
the shape of the rotating capacitor plate is the same as that of the first fixed capacitor plate, the rotating capacitor plate is parallel to the first fixed capacitor plate, the rotating capacitor plate is coaxial with the first fixed capacitor plate, the rotating capacitor plate is electrically connected with the first capacitor measuring module, and the rotating capacitor plate is electrically connected with the second capacitor measuring module;
the second fixed capacitor plate is 1/4 circular ring, the inner diameter and outer diameter of the second fixed capacitor plate are the same as those of the first fixed capacitor plate, the second fixed capacitor plate is parallel to the rotary capacitor plate, the second fixed capacitor plate is coaxial with the rotary capacitor plate, the reference plane is parallel to the first fixed capacitor plate, the projections of the first fixed capacitor plate and the second fixed capacitor plate on the reference plane are a complete circular ring, the distance between the second fixed capacitor plate and the rotary capacitor plate is not equal to the distance between the first fixed capacitor plate and the rotary capacitor plate, and the second fixed capacitor plate is electrically connected with the second capacitor measuring module.
A use method of the GNSS measurement accuracy detector comprises the following steps:
height variation Δ H measurement: the initial position of the lifting platform is measured by the first laser range finder and sent to the controller, the controller takes an initial head value A0 of height above millimeters, the angle measuring device measures the angle theta 0 of the scale cone and sends to the controller, and the controller calculates an initial tail value of height
Then obtaining the initial accurate value H0 ═ A0+ B0; the first laser distance measuring instrument measures the end point position of the lifting platform and sends the end point position to the controller, the controller obtains a height end point head value A1 which is more than millimeters, the angle measuring device measures the angle theta 1 of the scale cone and sends the angle theta 1 to the controller, and the controller calculates a height end point tail value
Then obtaining the accurate value H1 of the height end point, namely A1+ B1; the controller calculates the delta H-H1-H0;
first horizontal direction change value Δ X measurement: the second laser range finder measures the initial position of the first slide block and sends the initial position to the controller, the controller takes a first horizontal direction initial head value C0 of more than millimeters, and the angle measuring device measures the angle of the first scale column
0 and sending to the controller, and the controller calculates a first horizontal initial tail value
Then obtaining a first horizontal initial accurate value X0 ═ C0+ D0; the second laser range finder measures the terminal position of the first slide block and sends the terminal position to the controller, the controller takes a lifting terminal head value C1 more than millimeters, and the angle measuring device measures the angle of the first graduated column
And sending the final value to a controller, and the controller calculates a first horizontal direction end value
Then obtaining a first horizontal direction end point accurate value X1 ═ C1+ D1; the controller calculates the delta X as X1-X0;
second horizontal direction variation value Δ Y measurement: the third laser range finder measures the initial position of the second sliding block and sends the initial position to the controller, the controller takes a second horizontal direction initial head value E0 which is more than millimeters, the angle measuring device measures the angle psi 0 of the first scale column and sends the angle psi 0 to the controller, and the controller calculates a second horizontal direction initial tail value
Then obtaining the initial accurate value Y0 ═ E0+ F0 of the measurement lifting; the third laser range finder measures the terminal position of the second slide block and sends the terminal position to the controller, the controller takes the lifting terminal head value E1 above millimeter, the angle measuring device measures the angle psi 1 of the first graduated column and sends the angle psi 1 to the controller, and the controller calculates the terminal tail value of the second horizontal direction
Then obtaining a second horizontal direction end point accurate value Y1 ═ E1+ F1; the controller calculates Δ Y — Y1-Y0.
Further, the angle measuring method of the angle measuring device is as follows:
the first capacitance measuring module reads a capacitance value C1 between the first fixed capacitance plate and the rotating capacitance plate and sends the capacitance value C1 to the controller, an included angle ω between a chord of the first fixed capacitance plate and the rotating capacitance plate is calculated, ω is 180 (C1/C1max), C1max is a maximum capacitance value between the first fixed capacitance plate and the rotating capacitance plate, C2max is a maximum capacitance value between the second fixed capacitance plate and the rotating capacitance plate, a rotating capacitance plate rotating angle β means an angle of the rotating capacitance plate rotating around a self rotating shaft by taking the chord of the first fixed capacitance plate as a starting point, the second capacitance measuring module reads a capacitance value C2 between the second fixed capacitance plate and the rotating capacitance plate and sends the capacitance value C2 to the controller, the controller judges that a rotating capacitance plate rotating angle β is ω if C2 is 0 and C1 is C1max, the controller judges that the rotating capacitance plate rotating angle β is ω if C2 is 0 or more and C1 is C1max/2, the controller determines that the rotating capacitor plate rotation angle β is ω if C2 is C2max and C1< C1max/2, the controller determines that the rotating capacitor plate rotation angle β is ω if C2>0 and C1< 0, the controller determines that the rotating capacitor plate rotation angle β is ω +180 ° if C2>0 and C1< C1max/2, and the controller determines that the rotating capacitor plate rotation angle β is ω +180 ° if C2 is 0 and C1 ≧ C1 max/2.
The invention has the beneficial effects that: compared with the prior art, the method has the advantages that,
1) according to the invention, the height of the GNSS module is changed and measured through the lifting measurement mechanism, the position of the GNSS module in the first horizontal direction is changed and measured through the first horizontal measurement mechanism, and the position of the GNSS module in the second horizontal direction is changed and measured through the second horizontal measurement mechanism, so that the position change of the GNSS module is integrated into an integral structure without a supporting block, the device is more portable, meanwhile, the position change of the GNSS module is decomposed into 3 dimensions, which respectively correspond to the 3 dimensions measured by the GNSS module, the measurement error of each dimension can be visually displayed, and finally, the time of the demonstration process is shorter due to the synchronization of the position change and the measurement;
2) the position of the lifting platform on the horizontal plane is limited through the first screw rod and the vertical scale, the position of the lifting platform in the vertical direction is changed through the rotation of the first screw rod in the first screw hole, and the position of the lifting platform is measured through the vertical scale, so that the position of the GNSS module in the vertical direction is adjusted and measured;
3) according to the GNSS measuring device, the screw pitch of the first screw rod is set to be 0.5mm, the scale cone is arranged on the first screw rod, the first indicating needle is arranged on the upper surface of the base to indicate, so that the relative motion between the first screw rod and the lifting platform is amplified, and the measuring result of the relative position change of the lifting platform and the first screw rod is accurate to 0.01mm by combining with the vertical scale, so that the GNSS measuring device can demonstrate the GNSS measuring error under the accuracy that the position change in the vertical direction is 0.01 mm;
4) according to the invention, the position change of the GNSS module in the first horizontal direction is changed by rotating the second screw rod in the second screw hole, the position change of the GNSS module in the second horizontal direction is changed by rotating the third screw rod in the third screw hole, the second screw rod and the third screw rod are matched with each other to ensure that the Z axis of the GNSS module on the horizontal moving block cannot incline, and then the position change of the first sliding block and the second sliding block is obtained by the scale change of the first horizontal direction and the scale change of the second horizontal direction;
5) according to the GNSS measuring device, the screw pitch of the second screw rod is set to be 0.5mm, the first scale column is arranged on the second screw rod, the second pointer is arranged on the upper surface of the first sliding block for indication, so that the relative motion between the second screw rod and the first movable block is amplified, and the measuring result of the relative position change of the first movable block and the second screw rod is accurate to 0.01mm by combining with the scale in the first horizontal direction, so that the GNSS measuring device can demonstrate the GNSS measuring error under the condition that the position change in the first horizontal direction is 0.01 mm; the thread pitch of a third screw rod is set to be 0.5mm, a second scale column is arranged on the third screw rod, a third pointer is arranged on the upper surface of a second sliding block for indication, so that the relative motion between the third screw rod and a second movable block is amplified, and the relative position change measurement result of the second movable block and the third screw rod is accurate to 0.01mm by combining with a second horizontal direction scale, so that the device can demonstrate the measurement error of the GNSS under the accuracy that the position change of the second horizontal direction is 0.01 mm;
6) according to the invention, the distance value of the lifting platform with millimeter precision is measured by the first laser range finder, the distance value of the first sliding block with millimeter precision is measured by the second laser range finder, the distance value of the third sliding block with millimeter precision is measured by the third laser range finder and is displayed by the display, so that the position change of the GNSS module in the first horizontal direction and the second horizontal direction can be rapidly and visually displayed, the measurement speed is higher, and the display is more visual;
7) the invention firstly converts the up-and-down movement distance of the lifting platform into the angle change of the scale cone relative to the first pointer through the scale cone, converts the movement distance of the first movable block in the first horizontal direction into the angle change of the first scale column relative to the second pointer through the first scale column, converts the movement distance of the second movable block in the first horizontal direction into the angle change of the second scale column relative to the third pointer through the second scale column, calculates the position change of the lifting platform in the vertical direction through the angle change measured by the angle measuring device, the measured values of the first laser range finder, the second laser range finder and the third laser range finder, calculates the position change of the first movable block in the first horizontal direction, calculates the position change of the second movable block in the second horizontal direction, the measurement precision is higher, and the measurement speed is higher;
8) according to the invention, the included angle between the chord of the rotating capacitor plate and the chord of the first fixed capacitor plate is obtained through the capacitance value change between the rotating capacitor plate and the first fixed capacitor plate, and then the rotating capacitor plate rotating angle beta is judged by combining the capacitance values between the rotating capacitor plate and the second fixed capacitor plate, so that the controller calculates the position change of the lifting platform in the vertical direction according to the measured values of the beta combining the first laser distance meter, the second laser distance meter and the third laser distance meter, the position change of the first movable block in the first horizontal direction and the position change of the second movable block in the second horizontal direction, the measurement precision is higher, and the measurement speed is faster;
9) the method comprises the steps that a first laser distance meter is used for measuring a starting point value and a final point value of the height of the lifting platform to obtain a head value, an angle measuring device is used for measuring angles of the starting point and the final point of a scale cone to obtain a tail value, and the head value and the tail value are combined to obtain accurate height change of the lifting platform; measuring a starting point and a final point of the first movable block in the first horizontal direction by a second laser range finder to obtain a head value, measuring the angles of the starting point and the final point of the scale cone by an angle measuring device to obtain a tail value, and combining the head value and the tail value to obtain the accurate distance change of the first movable block in the first horizontal direction; measuring a starting point and an end point of the second movable block in the second horizontal direction by a third laser range finder to obtain a head value, measuring the angles of the starting point and the end point of the scale cone by an angle measuring device to obtain a tail value, and combining the head value and the tail value to obtain the accurate distance change of the second movable block in the second horizontal direction; compared with the prior art, the distance change is measured by only a single laser range finder, so that the method is more accurate;
10) the invention firstly obtains the included angle between the chord of the rotating capacitor plate and the chord of the first fixed capacitor plate through the capacitance value change between the rotating capacitor plate and the first fixed capacitor plate, then judges the rotating angle beta of the rotating capacitor plate through combining the capacitance value between the rotating capacitor plate and the second fixed capacitor plate, so that the controller calculates the position change of the lifting platform in the vertical direction according to the measured value of the beta combining the first laser distance meter, the second laser distance meter and the third laser distance meter, calculates the position change of the first movable block in the first horizontal direction, calculates the position change of the second movable block in the second horizontal direction, and compared with the prior art which only measures the angle through the capacitance value between the two capacitor plates, the angle range measured by the prior art is 0-180 degrees, but the angle range measured by the invention is 0-360 degrees, the measurement of the angle of the rotating capacitor plate rotating around the self rotating shaft by taking the chord of the first fixed capacitor plate as the starting point can be realized, the measuring range is wider.
Drawings
FIG. 1 is a schematic perspective view of example 1 of the present invention;
FIG. 2 is a partial view at F of FIG. 1;
FIG. 3 is a partial view at G of FIG. 1;
FIG. 4 is a partial view at E of FIG. 1;
FIG. 5 is a partial view taken at H in FIG. 1;
FIG. 6 is an exploded view of example 1 of the present invention;
FIG. 7 is a partial view taken at J of FIG. 6;
FIG. 8 is a partial view taken at K in FIG. 6;
FIG. 9 is a partial view at L of FIG. 6;
FIG. 10 is a perspective view of another embodiment of the present invention 1;
FIG. 11 is a partial view taken at I of FIG. 10;
FIG. 12 is a schematic view of a structure at a first scale post according to embodiment 1 of the present invention;
FIG. 13 is a cross-sectional view taken along line Q-Q of FIG. 12;
FIG. 14 is a sectional view taken at line R-R in FIG. 12;
FIG. 15 is a cross-sectional view taken at section line T-T of FIG. 12;
fig. 16 is a block diagram of the circuit structure of embodiment 1 of the present invention.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments:
example 1: referring to fig. 1 to 16, the technical solution of the present invention is: a GNSS measurement accuracy detector comprising: the GNSS module 1 can be a GNSS board card; the GNSS module comprises a lifting measuring mechanism 2, wherein the lifting measuring mechanism 2 can be a telescopic rod with scales, the GNSS module 1 is connected to the lifting measuring mechanism 2, and the lifting measuring mechanism 2 is used for measuring the lifting height of the GNSS module 1; the first horizontal measuring mechanism 3 can be a sliding chute with scales, the GNSS module 1 is connected to the lifting measuring mechanism 2 through the first horizontal measuring mechanism 3, and the first horizontal measuring mechanism 3 is used for measuring the displacement of the GNSS module 1 in the first horizontal direction; and the second horizontal measuring mechanism 4, the GNSS module 1 is connected to the second horizontal measuring mechanism 4, the second horizontal measuring mechanism 4 may be a chute with scales, and the second horizontal measuring mechanism 4 is used for measuring the displacement of the GNSS module 1 in a second horizontal direction, which is perpendicular to the first horizontal direction.
Further, the lift measuring mechanism 2 includes: 2-6 of a base; one end of the first screw rod 2-1 is rotatably connected to the upper surface of the base 2-6 through a bearing, and the first screw rod 2-1 is parallel to the upper surface of the base 2-6; the first knob 2-3 is cylindrical, the diameter of the first knob 2-3 is larger than that of the first screw rod 2-1, the first knob 2-3 is coaxial with the first screw rod 2-1, and the first knob 2-3 is fixedly connected to the upper end of the first screw rod 2-1; the lower end of the vertical scale 2-2 is connected to the upper surface of the base 2-6 in a welding mode, and the vertical scale 2-2 is parallel to the first screw rod 2-1; the GNSS module 1 is connected to the lifting platform 2-4, the lifting platform 2-4 is rectangular, two angles of the lifting platform 2-4 are respectively provided with a first screw hole 2-4-1 and a measuring hole 2-4-2, the first screw hole 2-4-1 is matched with a first screw rod 2-1, the first screw rod 2-1 is in threaded connection with the first screw hole 2-4-1, the measuring hole 2-4-2 is matched with a vertical scale 2-2, and the vertical scale 2-2 is in sliding connection with the measuring hole 2-4-2. In order to make the up-and-down movement of the lifting platform 2-4 more stable, two sliding rods parallel to the first screw rod 2-1 can be welded and connected at the other two corners of the base 2-6, two sliding holes which are vertically communicated are arranged at the corresponding positions of the lifting platform 2-4, the sliding holes are matched with the sliding rods, and the sliding rods are connected in the sliding holes in a sliding manner.
Further, the lifting and lowering measuring mechanism 2 further includes: the scale cone 2-5 is fixedly connected to the lower portion of the first screw rod 2-1, the diameter of the bottom face of the scale cone 2-5 is larger than that of the first screw rod 2-1, the scale cone 2-5 is coaxial with the first screw rod 2-1, the lower surface of the scale cone 2-5 is attached to the upper surface of the base 2-6, the first scale 2-5-1 is arranged on the side surface, close to the base 2-6, of the scale cone 2-5, and one circle of the scale cone 2-5 is divided into 50 parts by the first scale 2-5-1; the first indicating needle 2-7 is fixedly connected to the upper surface of the base 2-6, the width of the needle point of the first indicating needle 2-7 is smaller than the minimum scale of the first scale 2-5-1, and the needle point of the first indicating needle 2-7 is located on the edge of the lower surface of the scale cone 2-5; the pitch of the first screw rod 2-1 is 0.5 mm.
Further, the first leveling mechanism 3 includes: the GNSS module 1 is fixedly connected to the upper surface of the horizontal moving block 3-1, the horizontal moving block 3-1 is provided with a second screw hole 3-1-1 and a third screw hole 3-1-2, the second screw hole 3-1-1 and the third screw hole 3-1-2 are perpendicular to each other and do not intersect, the central axis of the second screw hole 3-1-1 is perpendicular to the Z axis of the GNSS module 1, and the central axis of the third screw hole 3-1-2 is perpendicular to the Z axis of the GNSS module 1; the first sliding chutes 3-2 comprise two first sliding chutes 3-2, the two first sliding chutes 3-2 are arranged at the edges of two opposite sides of the lifting platform 2-4, the two first sliding chutes 3-2 are parallel to each other, and a first horizontal direction scale 3-5 along the length direction of the first sliding chute 3-2 is arranged on the side surface of one first sliding chute 3-2; the first sliding blocks 3-3 are matched with the first sliding grooves 3-2, the two first sliding blocks 3-3 are respectively connected in the two first sliding grooves 3-2 in a sliding mode, first rotating holes 3-3-1 perpendicular to the first sliding grooves 3-2 are formed in the first sliding blocks 3-3, coaxial bearings are fixedly connected in the first rotating holes 3-3-1, and the central axis of the first rotating holes 3-3-1 and the central axis of the second screw holes 3-1-1 are located on the same plane perpendicular to the central axis of the first screw rods 2-1; two ends of the second screw rod 3-4 are fixedly connected in first screw holes 3-3-1 of the two first sliding blocks 3-3 through bearings, the second screw rod 3-4 is matched with a second screw hole 3-1-1, and the second screw rod 3-4 is in threaded connection in the second screw hole 3-1-1; the second leveling mechanism 4 includes: the second sliding chutes 4-1 comprise two second sliding chutes 4-1, the two second sliding chutes 4-1 are arranged at the edges of two opposite sides of the lifting platform 2-4, the second sliding chutes 4-1 are perpendicular to the first sliding chutes 3-2, the two second sliding chutes 4-1 are parallel to each other, and the side surface of one second sliding chute 4-1 is provided with a second horizontal direction scale 4-4 along the length direction of the second sliding chute 4-1; the second sliding blocks 4-3 are arranged, the second sliding blocks 4-3 are matched with the second sliding grooves 4-1, the two second sliding blocks 4-3 are respectively connected in the two second sliding grooves 4-1 in a sliding mode, the second sliding blocks 4-3 are provided with second rotary holes 4-3-1 perpendicular to the second sliding grooves 4-1, coaxial bearings are fixedly connected in the second rotary holes 4-3-1, and the central axis of the second rotary holes 4-3-1 and the central axis of the third screw holes 3-1-2 are located on the same plane perpendicular to the central axis of the first screw rod 2-1; two ends of the third screw rod 4-2 are fixedly connected in second rotary holes 4-3-1 of the two second sliding blocks 4-3 through bearings, the third screw rod 4-2 is matched with the third screw holes 3-1-2, and the third screw rod 4-2 is in threaded connection in the third screw holes 3-1-2.
Further, the first leveling mechanism 3 further includes: the first scale column 2-5 is fixedly connected to the end part, close to the first horizontal direction scale 3-5, of the second screw rod 3-4, the first scale column 2-5 is coaxial with the second screw rod 3-4, the second scale 3-7-1 is arranged on the side surface, close to the first sliding block 3-3, of the first scale column 2-5, and the second scale 3-7-1 equally divides one circle of the first scale column 2-5 into 50 parts; the second pointer 3-6 is fixedly connected to the upper surface of the first sliding block 3-3, the width of the needle point of the second pointer 3-6 is smaller than the minimum scale of the second scale 3-7-1, and the needle point of the second pointer 3-6 is positioned at the edge of the first sliding block 3-3 close to the first scale column 2-5; the screw pitch of the second screw rod 3-4 is 0.5 mm; the second leveling mechanism 4 further includes: the second scale column 3-7 is fixedly connected to the end part, close to the second horizontal direction scale 4-4, of the third screw rod 4-2, the second scale column 3-7 is coaxial with the third screw rod 4-2, the side surface, close to the second sliding block 4-3, of the second scale column 3-7 is provided with a third scale 4-5-1, and the third scale 4-5-1 equally divides one circle of the second scale column 3-7 into 50 parts; the third pointer 4-6, the third pointer 4-6 is fixedly connected to the upper surface of the second slide block 4-3, the width of the needle point of the third pointer 4-6 is smaller than the minimum scale of the third scale 4-5-1, and the needle point of the third pointer 4-6 is positioned at the edge of the second slide block 4-3 close to the second scale column 3-7; the screw pitch of the third screw rod 4-2 is 0.5 mm.
Further, still include: the controller 6 can be a control component with peripheral circuits, such as a PLC, an Arduino or a raspberry pi and the like; the display 7, the said display 7 is electrically connected with controller 6; the first laser range finder 2-7 is arranged on the upper surface of the base 2-6, laser emitted by the first laser range finder 2-7 irradiates the lower surface of the lifting table 2-4, the laser emission direction of the first laser range finder 2-7 is parallel to the central axis of the first screw rod 2-1, and the first laser range finder 2-7 is electrically connected with the controller 6; the second laser range finder 3-8 is arranged at the end part of the first sliding chute 3-2, the laser emission direction of the second laser range finder 3-8 is parallel to that of the first sliding chute 3-2, the laser emitted by the second laser range finder 3-8 irradiates the surface of the first sliding block 3-3, and the second laser range finder 3-8 is electrically connected with the controller 6; and the third laser range finder 4-7 is arranged at the end part of the second sliding chute 4-1, the laser emission direction of the third laser range finder 4-7 is parallel to that of the second sliding chute 4-1, the laser emitted by the third laser range finder 4-7 irradiates the surface of the second sliding block 4-3, and the third laser range finder 4-7 is electrically connected with the controller 6. The first laser distance measuring instrument 2-7, the second laser distance measuring instrument 3-8 and the third laser distance measuring instrument 4-7 can adopt a laser distance measuring module with the brand name of Myantenna and the model number of L.
Further, still include: the angle measuring device is arranged between the scale cone 2-5 and the base 2-6, the angle measuring device is arranged between the first sliding block 3-3 and the first scale column 2-5, the angle measuring device is arranged between the second sliding block 4-3 and the second scale column 3-7, and the angle measuring device is electrically connected with the controller 6.
Further, the angle measuring device includes: the first capacitance measuring module 5-5, wherein the first capacitance measuring module 5-5 is electrically connected with the controller 6; the second capacitance measuring module 5-4, the second capacitance measuring module 5-4 is electrically connected with the controller 6; the first fixed capacitor plate 5-1 is made of metal, the first fixed capacitor plate 5-1 is in a semicircular ring shape, and the first fixed capacitor plate 5-1 is electrically connected with the first capacitor measuring module 5-5; the capacitance measuring device comprises a rotating capacitance plate 5-3, wherein the shape of the rotating capacitance plate 5-3 is the same as that of a first fixed capacitance plate 5-1, the rotating capacitance plate 5-3 is parallel to the first fixed capacitance plate 5-1, the rotating capacitance plate 5-3 is coaxial with the first fixed capacitance plate 5-1, the rotating capacitance plate 5-3 is electrically connected with a first capacitance measuring module 5-5, and the rotating capacitance plate 5-3 is electrically connected with a second capacitance measuring module 5-4; the second fixed capacitor plate 5-2 is in the shape of 1/4 circular ring, the inner diameter and the outer diameter of the second fixed capacitor plate 5-2 are the same as those of the first fixed capacitor plate 5-1, the second fixed capacitor plate 5-2 is parallel to the rotating capacitor plate 5-3, the second fixed capacitor plate 5-2 is coaxial with the rotating capacitor plate 5-3, the reference plane is parallel to the first fixed capacitor plate 5-1, the projections of the first fixed capacitor plate 5-1 and the second fixed capacitor plate 5-2 on the reference plane are in the shape of a complete circular ring, the distance between the second fixed capacitor plate 5-2 and the rotating capacitor plate 5-3 is not equal to the distance between the first fixed capacitor plate 5-1 and the rotating capacitor plate 5-3, and the second fixed capacitor plate 5-2 is electrically connected with the second capacitor measuring module 5-4. The angle measuring device is arranged between a scale cone 2-5 and a base 2-6, a first fixed capacitor plate 5-1 is arranged in the base 2-6, the first fixed capacitor plate 5-1 is vertical to a first screw rod 2-1, the inner diameter of the first fixed capacitor plate 5-1 is larger than the outer diameter of the first screw rod 2-1, the outer diameter of the first fixed capacitor plate 5-1 is smaller than the diameter of the lower bottom surface of the scale cone 2-5, a second fixed capacitor plate 5-2 is arranged in the base 2-6, the second fixed capacitor plate 5-2 is vertical to the first screw rod 2-1, and a rotary capacitor plate 5-3 is arranged in the scale cone 2-5. The angle measuring device is arranged between a first scale column 2-5 and a first sliding block 3-3, a first fixed capacitor plate 5-1 is arranged in the first sliding block 3-3, the first fixed capacitor plate 5-1 is vertical to a second lead screw 3-4, the inner diameter of the first fixed capacitor plate 5-1 is larger than that of a first rotary hole 3-3-1, the outer diameter of the first fixed capacitor plate 5-1 is smaller than that of the first scale column 2-5, a second fixed capacitor plate 5-2 is arranged in a first movable block, the second fixed capacitor plate 5-2 is vertical to the second lead screw 3-4, and a rotary capacitor plate 5-3 is arranged in the first scale column 2-5. The angle measuring device is arranged between a second scale column 3-7 and a second sliding block 4-3, a first fixed capacitor plate 5-1 is arranged in the second sliding block 4-3, the first fixed capacitor plate 5-1 is perpendicular to a third screw rod 4-2, the inner diameter of the first fixed capacitor plate 5-1 is larger than that of the second rotary hole 4-3-1, the outer diameter of the first fixed capacitor plate 5-1 is smaller than that of the second scale column 3-7, the second fixed capacitor plate 5-2 is arranged in a second movable block, the second fixed capacitor plate 5-2 is perpendicular to the third screw rod 4-2, and the rotary capacitor plate 5-3 is arranged in the second scale column 3-7.
A use method of the GNSS measurement accuracy detector comprises the following steps:
height variation Δ H measurement: the first laser range finder 2-7 measures the initial position of the lifting platform 2-4 and sends the initial position to the controller 6, the controller 6 takes the height initial head value A0 above millimeters, the angle measuring device measures the angle theta 0 of the scale cone 2-5 and sends the angle theta 0 to the controller 6, and the controller 6 calculates the height initial tail value
Then obtaining the initial accurate value H0 ═ A0+ B0; the first laser distance measuring instrument 2-7 measures the end position of the lifting platform 2-4 and sends the end position to the controller 6, the controller 6 takes the height end head value A1 above millimeter, and the angle is measuredThe measuring device measures the angle theta 1 of the scale cone 2-5 and sends the angle theta 1 to the controller 6, and the controller 6 calculates the tail value of the height end point
Then obtaining the accurate value H1 of the height end point, namely A1+ B1; the controller 6 calculates Δ H ═ H1-H0;
first horizontal direction change value Δ X measurement: the second laser range finder 3-8 measures the initial position of the first slide block 3-3 and sends the initial position to the controller 6, the controller 6 takes a first horizontal direction initial head value C0 above millimeters, and the angle measuring device measures the angle of the first scale column 2-5
0 and sends to the controller 6, and the controller 6 calculates a first horizontal direction initial tail value
Then obtaining a first horizontal initial accurate value X0 ═ C0+ D0; the second laser distance measuring instrument 3-8 measures the end position of the first sliding block 3-3 and sends the end position to the controller 6, the controller 6 takes a lifting end head value C1 more than millimeters, and the angle measuring device measures the angle of the first scale column 2-5
1 and sent to the controller 6, the controller 6 calculates a first horizontal direction end value
Then obtaining a first horizontal direction end point accurate value X1 ═ C1+ D1; the controller 6 calculates Δ X ═ X1-X0;
second horizontal direction variation value Δ Y measurement: the third laser range finder 4-7 measures the initial position of the second slider 4-3 and sends the initial position to the controller 6, the controller 6 takes a second horizontal direction initial head value E0 of more than millimeters, the angle measuring device measures the angle psi 0 of the first graduated columns 2-5 and sends the angle psi 0 to the controller 6, and the controller 6 calculates a second horizontal direction initial tail value
Then obtaining the initial accurate value Y0 ═ E0+ F0 of the measurement lifting; the third laser range finder 4-7 measures the terminal position of the second slider 4-3 and sends to the controller 6, the controller 6 takes the lifting terminal head value E1 above millimeter, the angle measuring device measures the angle psi 1 of the first graduated column 2-5 and sends to the controller 6, the controller 6 calculates the second horizontal terminal tail value
Then obtaining a second horizontal direction end point accurate value Y1 ═ E1+ F1; the controller 6 calculates Δ Y — Y1-Y0.
Further, the angle measuring method of the angle measuring device is as follows: the first capacitance measuring module 5-5 reads a capacitance value C1 between the first fixed capacitive plate 5-1 and the rotating capacitive plate 5-3 and sends the capacitance value C1 to the controller 6, calculates an included angle ω between a chord of the first fixed capacitive plate 5-1 and a chord of the rotating capacitive plate 5-3, ω being 180 (C1/C1max), C1max being a maximum capacitance value between the first fixed capacitive plate 5-1 and the rotating capacitive plate 5-3, C2max being a maximum capacitance value between the second fixed capacitive plate 5-2 and the rotating capacitive plate 5-3, a rotation angle β of the rotating capacitive plate 5-3 being an angle of the rotating capacitive plate 5-3 rotating around a rotation axis thereof with the chord of the first fixed capacitive plate 5-1 as a starting point, the second capacitance measuring module 5-4 reading a capacitance value C2 between the second fixed capacitive plate 5-2 and the rotating capacitive plate 5-3 and sending the capacitance value C2 to the controller 6, the controller 6 determines that the rotation angle β of the rotating capacitor plate 5-3 is ω if C2 is 0 and C1 is C1max, the controller 6 determines that the rotation angle β of the rotating capacitor plate 5-3 is ω if C2>0 and C1 is ≧ C1max/2, the controller 6 determines that the rotation angle β of the rotating capacitor plate 5-3 is ω if C2 is C2max and C1 is C1max/2, the controller 6 determines that the rotation angle β of the rotating capacitor plate 5-3 is ω if C2>0 and C1 is 0, the controller 6 determines that the rotation angle β of the rotating capacitor plate 5-3 is ω +180 ° if C2>0 and C1 is C1max/2, the controller 6 determines that the rotation angle β of the rotating capacitor plate 5-3 is ω +180 ° if C2 is 0 and C1 is C1 max/2.
The invention has the advantages that the method has the advantages that,
1) according to the invention, the height of the GNSS module 1 is changed and measured through the lifting measuring mechanism 2, the position of the GNSS module 1 in the first horizontal direction is changed and measured through the first horizontal measuring mechanism 3, and the position of the GNSS module 1 in the second horizontal direction is changed and measured through the second horizontal measuring mechanism 4, so that the position change of the GNSS module 1 is integrated into an integral structure without a supporting block, the device is more portable, meanwhile, the position change of the GNSS module 1 is decomposed into 3 dimensions which respectively correspond to the 3 dimensions measured by the GNSS module 1, the measurement error of each dimension can be visually displayed, and finally, the demonstration process time is shorter due to the synchronization of the position change and the measurement;
2) the position of a lifting platform 2-4 in the horizontal plane is limited through a first screw rod 2-1 and a vertical scale 2-2, the position of the lifting platform 2-4 in the vertical direction is changed by rotating the first screw rod 2-1 in a first screw hole 2-4-1, and the position of the lifting platform 2-4 is measured through the vertical scale 2-2, so that the position of a GNSS module 1 in the vertical direction is adjusted and measured;
3) according to the GNSS measuring device, the thread pitch of the first screw rod 2-1 is set to be 0.5mm, the scale cone 2-5 is arranged on the first screw rod 2-1, the first indicating needle 2-7 is arranged on the upper surface of the base 2-6 to indicate, so that the relative motion between the first screw rod 2-1 and the lifting platform 2-4 is amplified, and the measuring result of the relative position change of the lifting platform 2-4 and the first screw rod 2-1 is accurate to 0.01mm by combining with the vertical scale 2-2, so that the GNSS measuring device can demonstrate the GNSS measuring error under the accuracy that the position change in the vertical direction is 0.01 mm;
4) according to the invention, the position change of the GNSS module 1 in the first horizontal direction is changed by rotating the second screw rod 3-4 in the second screw hole 3-1-1, the position change of the GNSS module 1 in the second horizontal direction is changed by rotating the third screw rod 4-2 in the third screw hole 3-1-2, the second screw rod and the third screw rod are matched with each other to ensure that the Z axis of the GNSS module 1 on the horizontal moving block 3-1 cannot incline, and then the position change of the first sliding block 3-3 and the second sliding block 4-3 is obtained by the change of the first horizontal direction scale 3-5 and the second horizontal direction scale 4-4;
5) according to the GNSS measuring device, the screw pitch of the second screw rod 3-4 is set to be 0.5mm, the first scale column 2-5 is arranged on the second screw rod 3-4, the second pointer 3-6 is arranged on the upper surface of the first sliding block 3-3 to indicate, so that the relative motion between the second screw rod 3-4 and the first movable block is amplified, and the relative position change measuring result of the first movable block and the second screw rod 3-4 is accurate to 0.01mm by combining with the first horizontal direction scale 3-5, so that the GNSS measuring device can demonstrate the GNSS measuring error under the condition that the position change in the first horizontal direction is 0.01 mm; the thread pitch of a third screw rod 4-2 is set to be 0.5mm, a second scale column 3-7 is arranged on the third screw rod 4-2, a third pointer 4-6 is arranged on the upper surface of a second sliding block 4-3 for indication, so that the relative motion between the third screw rod 4-2 and a second movable block is amplified, and the measurement result of the relative position change of the second movable block and the third screw rod 4-2 is accurate to 0.01mm by combining with a second horizontal direction scale 4-4, so that the device can demonstrate the measurement error of the GNSS under the accuracy that the position change in the second horizontal direction is 0.01 mm;
6) according to the invention, the distance value of the lifting platform 2-4 with millimeter precision is measured by the first laser range finder 2-7, the distance value of the first sliding block 3-3 with millimeter precision is measured by the second laser range finder 3-8, the distance value of the third sliding block with millimeter precision is measured by the third laser range finder 4-7, and the distance value is displayed by the display 7, so that the position change of the GNSS module 1 in the first horizontal direction and the second horizontal direction can be rapidly and visually displayed, the measuring speed is higher, and the display is more visual;
7) because the measuring precision of the laser range finder can only reach 1mm, the measuring precision is not enough, the invention firstly converts the distance of the up-and-down movement of the lifting platform 2-4 into the angle change of the scale cone 2-5 relative to the first pointer 2-7 through the scale cone 2-5, the first scale column 2-5 converts the movement distance of the first movable block in the first horizontal direction into the angle change of the first scale column 2-5 relative to the second pointer 3-6, the second scale column 3-7 converts the movement distance of the second movable block in the first horizontal direction into the angle change of the second scale column 3-7 relative to the third pointer 4-6, the angle change measured by the angle measuring device, the measured values of the first laser range finder 2-7, the second laser range finder 3-8 and the third laser range finder 4-7, the position change of the lifting table 2-4 in the vertical direction is calculated, the position change of the first movable block in the first horizontal direction is calculated, the position change of the second movable block in the second horizontal direction is calculated, the measurement precision is higher, and the measurement speed is higher;
8) according to the invention, the included angle between the chord of the rotating capacitive plate 5-3 and the chord of the first fixed capacitive plate 5-1 is obtained through the capacitance value change between the rotating capacitive plate 5-3 and the first fixed capacitive plate 5-1, and then the rotating angle beta of the rotating capacitive plate 5-3 is judged by combining the capacitance values between the rotating capacitive plate 5-3 and the second fixed capacitive plate 5-2, so that the position change of the lifting table 2-4 in the vertical direction, the position change of the first movable block in the first horizontal direction, the position change of the second movable block in the second horizontal direction and higher measurement precision and higher measurement speed are calculated by combining the measured values of the first laser range finder 2-7, the second laser range finder 3-8 and the third laser range finder 4-7 by the controller 6;
9) according to the invention, the starting point and the end point of the height of the lifting platform 2-4 are measured by the first laser range finder 2-7 to obtain a head value, the angles of the starting point and the end point of the scale cone 2-5 are measured by the angle measuring device to obtain a tail value, and the head value and the tail value are combined to obtain the accurate height change of the lifting platform 2-4; measuring a starting point and a final point of the first movable block in the first horizontal direction by a second laser range finder 3-8 to obtain a head value, measuring the angles of the starting point and the final point of the scale cones 2-5 by an angle measuring device to obtain a tail value, and combining the head value and the tail value to obtain the accurate distance change of the first movable block in the first horizontal direction; measuring a starting point and a final point of the second movable block in the second horizontal direction by a third laser range finder 4-7 to obtain a head value, measuring the angles of the starting point and the final point of the scale cones 2-5 by an angle measuring device to obtain a tail value, and combining the head value and the tail value to obtain the accurate distance change of the second movable block in the second horizontal direction; compared with the prior art, the distance change is measured by only a single laser range finder, so that the method is more accurate;
10) the invention firstly obtains the included angle between the chord of the rotating capacitor plate 5-3 and the chord of the first fixed capacitor plate 5-1 through the capacitance value change between the rotating capacitor plate 5-3 and the first fixed capacitor plate 5-1, then judges the rotating angle beta of the rotating capacitor plate 5-3 by combining the capacitance values between the rotating capacitor plate 5-3 and the second fixed capacitor plate 5-2, thereby the controller 6 calculates the position change of the lifting platform 2-4 in the vertical direction according to the beta and the measured values of the first laser range finder 2-7, the second laser range finder 3-8 and the third laser range finder 4-7, calculates the position change of the first movable block in the first horizontal direction, calculates the position change of the second movable block in the second horizontal direction, and measures the angle only through the capacitance value between the two capacitor plates compared with the prior art, the angle range measured by the prior art is 0-180 degrees, while the angle range measured by the invention is 0-360 degrees, the measurement of the angle of the rotating capacitor plate 5-3 rotating around the self rotating shaft by taking the chord of the first fixed capacitor plate 5-1 as the starting point can be realized, and the measurement range is wider.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A GNSS measurement accuracy detector, comprising:
a GNSS module (1);
the GNSS module (1) is connected to the lifting measuring mechanism (2),
the lifting measurement mechanism (2) is used for measuring the lifting height of the GNSS module (1);
the GNSS module (1) is connected to the lifting measuring mechanism (2) through the first leveling mechanism (3), and the first leveling mechanism (3) is used for measuring the displacement of the GNSS module (1) in the first horizontal direction;
the GNSS module (1) is connected with the second horizontal measuring mechanism (4), the second horizontal measuring mechanism (4) is used for measuring the displacement of the GNSS module (1) in the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.
2. The GNSS measurement accuracy detector according to claim 1, characterized in that the elevation measurement mechanism (2) includes:
a base (2-6);
one end of the first screw rod (2-1) is rotatably connected to the upper surface of the base (2-6) through a bearing, and the first screw rod (2-1) is parallel to the upper surface of the base (2-6);
the first knob (2-3), the first knob (2-3) is cylindrical, the diameter of the first knob (2-3) is larger than that of the first screw rod (2-1), the first knob (2-3) and the first screw rod (2-1) are coaxial, and the first knob (2-3) is fixedly connected to the upper end of the first screw rod (2-1);
the lower end of the vertical scale (2-2) is fixedly connected to the upper surface of the base (2-6), and the vertical scale (2-2) is parallel to the first screw rod (2-1);
the GNSS module (1) is connected to the lifting platform (2-4), the lifting platform (2-4) is rectangular, two angles of the lifting platform (2-4) are respectively provided with a first screw hole (2-4-1) and a measuring hole (2-4-2), the first screw hole (2-4-1) is matched with the first screw rod (2-1), the first screw rod (2-1) is in threaded connection with the first screw hole (2-4-1), the measuring hole (2-4-2) is matched with the vertical scale (2-2), and the vertical scale (2-2) is in sliding connection with the measuring hole (2-4-2).
3. The GNSS measurement accuracy detector according to claim 2, wherein the elevation measurement mechanism (2) further includes:
the scale cone (2-5) is fixedly connected to the lower portion of the first screw rod (2-1), the diameter of the bottom face of the scale cone (2-5) is larger than that of the first screw rod (2-1), the scale cone (2-5) is coaxial with the first screw rod (2-1), the lower surface of the scale cone (2-5) is attached to the upper surface of the base (2-6), a first scale (2-5-1) is arranged on the side surface, close to the base (2-6), of the scale cone (2-5), and one circle of the scale cone (2-5) is divided into 50 parts by the first scale (2-5-1);
the first indicating needle (2-7), the first indicating needle (2-7) is fixedly connected to the upper surface of the base (2-6), the needle point width of the first indicating needle (2-7) is smaller than the minimum scale of the first scale (2-5-1), and the needle point of the first indicating needle (2-7) is located on the edge of the lower surface of the scale cone (2-5);
the screw pitch of the first screw rod (2-1) is 0.5 mm.
4. The GNSS measurement accuracy detector according to claim 2, characterized in that the first leveling mechanism (3) comprises:
the GNSS module (1) is fixedly connected to the upper surface of the horizontal moving block (3-1), the horizontal moving block (3-1) is provided with a second screw hole (3-1-1) and a third screw hole (3-1-2), the second screw hole (3-1-1) and the third screw hole (3-1-2) are perpendicular to each other and do not intersect, the central axis of the second screw hole (3-1-1) is perpendicular to the Z axis of the GNSS module (1), and the central axis of the third screw hole (3-1-2) is perpendicular to the Z axis of the GNSS module (1);
the first sliding chutes (3-2) comprise two first sliding chutes (3-2), the two first sliding chutes (3-2) are arranged at the edges of two opposite sides of the lifting platform (2-4), the two first sliding chutes (3-2) are parallel to each other, and a first horizontal direction scale (3-5) along the length direction of the first sliding chute (3-2) is arranged on the side surface of one first sliding chute (3-2);
the first sliding blocks (3-3) comprise two first sliding blocks (3-3), the first sliding blocks (3-3) are matched with the first sliding grooves (3-2), the two first sliding blocks (3-3) are respectively connected in the two first sliding grooves (3-2) in a sliding mode, first rotary holes (3-3-1) perpendicular to the first sliding grooves (3-2) are formed in the first sliding blocks (3-3), coaxial bearings are fixedly connected in the first rotary holes (3-3-1), and the central axis of the first rotary holes (3-3-1) and the central axis of the second screw holes (3-1-1) are located on the same plane perpendicular to the central axis of the first screw rods (2-1);
two ends of the second screw rod (3-4) are fixedly connected into first screw holes (3-3-1) of the two first sliding blocks (3-3) through bearings, the second screw rod (3-4) is matched with the second screw holes (3-1-1), and the second screw rod (3-4) is in threaded connection with the second screw holes (3-1-1);
the second leveling mechanism (4) comprises:
the second sliding chutes (4-1) comprise two second sliding chutes (4-1), the two second sliding chutes (4-1) are arranged at the edges of two opposite sides of the lifting platform (2-4), the second sliding chutes (4-1) are perpendicular to the first sliding chutes (3-2), the two second sliding chutes (4-1) are parallel to each other, and a second horizontal direction scale (4-4) along the length direction of the second sliding chute (4-1) is arranged on the side surface of one second sliding chute (4-1);
the two second sliding blocks (4-3) are matched with the second sliding grooves (4-1), the two second sliding blocks (4-3) are respectively connected in the two second sliding grooves (4-1) in a sliding mode, second rotary holes (4-3-1) perpendicular to the second sliding grooves (4-1) are formed in the second sliding blocks (4-3), coaxial bearings are fixedly connected in the second rotary holes (4-3-1), and the central axis of the second rotary holes (4-3-1) and the central axis of the third screw holes (3-1-2) are located on the same plane perpendicular to the central axis of the first screw rods (2-1);
two ends of the third screw rod (4-2) are fixedly connected into second rotary holes (4-3-1) of the two second sliding blocks (4-3) through bearings, the third screw rod (4-2) is matched with the third screw holes (3-1-2), and the third screw rod (4-2) is in threaded connection with the third screw holes (3-1-2).
5. The GNSS measurement accuracy detector of claim 4, wherein the first leveling mechanism (3) further comprises:
the first scale column (2-5), the first scale column (2-5) is fixedly connected with the end part of the second screw rod (3-4) close to the first horizontal direction scale (3-5), the first scale column (2-5) is coaxial with the second screw rod (3-4), the side surface of the first scale column (2-5) close to the first slide block (3-3) is provided with a second scale (3-7-1),
the second scale (3-7-1) divides the first scale column (2-5) into 50 parts in a circle;
the second indicating needle (3-6) is fixedly connected to the upper surface of the first sliding block (3-3), the needle point width of the second indicating needle (3-6) is smaller than the minimum scale of the second scale (3-7-1), and the needle point of the second indicating needle (3-6) is positioned at the edge of the first sliding block (3-3) close to the first scale column (2-5);
the pitch of the second screw rod (3-4) is 0.5 mm;
the second leveling mechanism (4) further comprises:
the second scale column (3-7), the second scale column (3-7) is fixedly connected with the end part of the third screw rod (4-2) close to the second horizontal direction scale (4-4), the second scale column (3-7) is coaxial with the third screw rod (4-2), the side surface of the second scale column (3-7) close to the second slide block (4-3) is provided with the third scale (4-5-1),
the third scale (4-5-1) divides the second scale column (3-7) into 50 parts in a circle;
the third pointer (4-6), the third pointer (4-6) is fixedly connected to the upper surface of the second sliding block (4-3), the width of the needle point of the third pointer (4-6) is smaller than the minimum scale of the third scale (4-5-1), and the needle point of the third pointer (4-6) is located at the edge of the second sliding block (4-3) close to the second scale column (3-7);
the screw pitch of the third screw rod (4-2) is 0.5 mm.
6. The GNSS measurement accuracy detector of claim 5, further comprising:
a controller (6);
a display (7), the display (7) being electrically connected to the controller (6);
the first laser range finder (2-7), the first laser range finder (2-7) is arranged on the upper surface of the base (2-6), laser emitted by the first laser range finder (2-7) irradiates the lower surface of the lifting platform (2-4), the laser emission direction of the first laser range finder (2-7) is parallel to the central axis of the first screw rod (2-1), and the first laser range finder (2-7) is electrically connected with the controller (6);
the second laser range finder (3-8), the second laser range finder (3-8) is arranged at the end of the first sliding chute (3-2), the laser emission direction of the second laser range finder (3-8) is parallel to the first sliding chute (3-2), the laser emitted by the second laser range finder (3-8) irradiates the surface of the first sliding block (3-3), and the second laser range finder (3-8) is electrically connected with the controller (6);
the third laser range finder (4-7), the third laser range finder (4-7) sets up in second spout (4-1) tip, and the laser emission direction of third laser range finder (4-7) is parallel with second spout (4-1), and the laser that third laser range finder (4-7) launched shines second slider (4-3) surface, and third laser range finder (4-7) are connected with controller (6) electricity.
7. The GNSS measurement accuracy detector of claim 6, further comprising:
the angle measuring device is arranged between the scale cone (2-5) and the base (2-6), the angle measuring device is arranged between the first sliding block (3-3) and the first scale column (2-5), the angle measuring device is arranged between the second sliding block (4-3) and the second scale column (3-7), and the angle measuring device is electrically connected with the controller (6).
8. The GNSS measurement accuracy detector of claim 7, wherein the angle measuring device includes:
a first capacitance measurement module (5-5), the first capacitance measurement module (5-5) being electrically connected to a controller (6);
a second capacitance measurement module (5-4), the second capacitance measurement module (5-4) being electrically connected to the controller (6);
the first fixed capacitor plate (5-1), the first fixed capacitor plate (5-1) is made of metal, the first fixed capacitor plate (5-1) is in a semicircular ring shape, and the first fixed capacitor plate (5-1) is electrically connected with the first capacitor measuring module (5-5);
the rotating capacitor plate (5-3) is in the same shape as the first fixed capacitor plate (5-1), the rotating capacitor plate (5-3) is parallel to the first fixed capacitor plate (5-1), the rotating capacitor plate (5-3) is coaxial with the first fixed capacitor plate (5-1), the rotating capacitor plate (5-3) is electrically connected with the first capacitor measuring module (5-5), and the rotating capacitor plate (5-3) is electrically connected with the second capacitor measuring module (5-4);
a second fixed capacitor plate (5-2), wherein the second fixed capacitor plate (5-2) is 1/4 circular ring, the inner diameter and outer diameter of the second fixed capacitor plate (5-2) are the same as those of the first fixed capacitor plate (5-1), the second fixed capacitor plate (5-2) is parallel to the rotating capacitor plate (5-3), the second fixed capacitor plate (5-2) is coaxial with the rotating capacitor plate (5-3), the reference plane is parallel to the first fixed capacitor plate (5-1), the projection of the first fixed capacitor plate (5-1) and the second fixed capacitor plate (5-2) on the reference plane is a complete circular ring, the distance between the second fixed capacitor plate (5-2) and the rotating capacitor plate (5-3) is not equal to the distance between the first fixed capacitor plate (5-1) and the rotating capacitor plate (5-3), the second fixed capacitor plate (5-2) is electrically connected with the second capacitance measuring module (5-4).
9. The method for using the GNSS measurement accuracy detector of claim 8, wherein the method comprises:
height variation Δ H measurement: the initial position of the lifting table (2-4) is measured by the first laser range finder (2-7) and sent to the controller (6), the initial head value A0 of the height of the controller (6) above millimeters is taken, the angle theta 0 of the scale cone (2-5) is measured by the angle measuring device and sent to the controller (6), and the initial tail value of the height is calculated by the controller (6)
Then obtaining the initial accurate value H0 ═ A0+ B0; the first laser distance measuring instrument (2-7) measures the end point position of the lifting platform (2-4) and sends the end point position to the controller (6), the controller (6) takes a height end point head value A1 of more than millimeters, the angle measuring device measures the angle theta 1 of the scale cone (2-5) and sends the angle theta 1 to the controller (6), and the controller (6) calculates a height end point tail value
Then obtaining the accurate value H1 of the height end point, namely A1+ B1; the controller (6) calculates delta H-H1-H0;
first horizontal direction change value Δ X measurement: the second laser range finder (3-8) measures the initial position of the first sliding block (3-3) and sends the initial position to the controller (6), the controller (6) takes a first horizontal initial head value C0 of more than millimeters, and the angle measuring device measures the angle of the first scale column (2-5)
And sending the data to the controller (6), and the controller (6) calculates a first horizontal initial tail value
Then obtaining a first horizontal initial accurate value X0 ═ C0+ D0; the second laser distance measuring instrument (3-8) measures the end position of the first sliding block (3-3) and sends the end position to the controller (6), and the controller (6) takes the lifting more than millimetersAn end head value C1, an angle measuring device measures the angle of the first graduated cylinder (2-5)
And sent to the controller (6), and the controller (6) calculates a first horizontal direction end value
Then obtaining a first horizontal direction end point accurate value X1 ═ C1+ D1; the controller (6) calculates Δ X ═ X1-X0;
second horizontal direction variation value Δ Y measurement: the third laser range finder (4-7) measures the initial position of the second sliding block (4-3) and sends the initial position to the controller (6), the controller (6) takes a second horizontal direction initial head value E0 which is larger than millimeters, the angle measuring device measures the angle psi 0 of the first scale column (2-5) and sends the angle psi 0 to the controller (6), and the controller (6) calculates a second horizontal direction initial tail value
Then obtaining the initial accurate value Y0 ═ E0+ F0 of the measurement lifting; the third laser distance measuring instrument (4-7) measures the end point position of the second sliding block (4-3) and sends the end point position to the controller (6), the controller (6) takes a lifting end point value E1 which is more than millimeter, the angle measuring device measures the angle psi 1 of the first scale column (2-5) and sends the angle psi 1 to the controller (6), and the controller (6) calculates a second horizontal end point value
Then obtaining a second horizontal direction end point accurate value Y1 ═ E1+ F1; the controller (6) calculates Δ Y — Y1-Y0.
10. The method of using the GNSS measurement accuracy detector according to claim 9, wherein the angle measurement method of the angle measurement device is:
the first capacitance measuring module (5-5) reads a capacitance value C1 between the first fixed capacitance plate (5-1) and the rotating capacitance plate (5-3) and sends the capacitance value C1 to the controller (6), an included angle omega between a chord of the first fixed capacitance plate (5-1) and a chord of the rotating capacitance plate (5-3) is calculated, omega is 180 (C1/C1max), C1max is a maximum capacitance value between the first fixed capacitance plate (5-1) and the rotating capacitance plate (5-3), C2max is a maximum capacitance value between the second fixed capacitance plate (5-2) and the rotating capacitance plate (5-3), a rotation angle beta of the rotating capacitance plate (5-3) refers to an angle of the rotating capacitance plate (5-3) rotating around a rotating shaft of the rotating capacitance plate by taking the chord of the first fixed capacitance plate (5-1) as a starting point, and the second capacitance measuring module (5-4) reads the second fixed capacitance plate (5-2) and the rotating capacitance plate (5-3) -3) and sent to a controller (6), the controller (6) determines that the rotation angle β of the rotating capacitive plate (5-3) is ω if C2 is 0 and C1 is C1max, the controller (6) determines that the rotation angle β of the rotating capacitive plate (5-3) is ω if C2>0 and C1 is ≧ C1max/2, the controller (6) determines that the rotation angle β of the rotating capacitive plate (5-3) is ω if C2 is C2max and C1 is C1max/2, the controller (6) determines that the rotation angle β of the rotating capacitive plate (5-3) is ω if C2>0 and C1 is 0, the controller (6) determines that the rotation angle β of the rotating capacitive plate (5-3) is ω, the controller (6) determines that the rotation angle β of the rotating capacitive plate (5-3) is 180 ° if C2>0 and C1< C1/2, the controller (6) determines that the rotation angle β of the rotating capacitive plate (5-3) is ω 1+ 363) is 360 and C363 is C363 +180 ° C362.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432566A (en) * | 2021-08-02 | 2021-09-24 | 南宁市自然资源信息集团有限公司 | Tree circumference measuring device and using method |
| CN114252016A (en) * | 2022-03-01 | 2022-03-29 | 山东拓普地理信息工程有限公司 | Large-scale curved surface modeling product mapping device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432566A (en) * | 2021-08-02 | 2021-09-24 | 南宁市自然资源信息集团有限公司 | Tree circumference measuring device and using method |
| CN113432566B (en) * | 2021-08-02 | 2022-10-25 | 南宁市自然资源信息集团有限公司 | Tree circumference measuring device and using method |
| CN114252016A (en) * | 2022-03-01 | 2022-03-29 | 山东拓普地理信息工程有限公司 | Large-scale curved surface modeling product mapping device |
| CN114252016B (en) * | 2022-03-01 | 2022-04-26 | 山东拓普地理信息工程有限公司 | Large-scale curved surface modeling product mapping device |
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