Building range finder based on grating angle measurement
Through a building rangefinder based on grating angle measurement, the grid sensor and laser technology are used to solve the measurement difficulties in narrow spaces or obstacles, and the distance between two points is measured at the third point, which expands the measurement scenario .
Patent Information
- Application Number
- CN202322652165.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-28
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2033-09-28
AI Technical Summary
Existing rangefinders are difficult to measure the distance between two points in a narrow space or obstacle scenario, and lack flexibility.
A building rangefinder based on grating angle measurement is designed. Using a grating sensor and a laser transmitter receiver combined with a belt transmission system, the distance between two points is measured by calculating the rotation angle of the grating and the laser round-trip time.
In a narrow space or with obstacles, the distance between two points can be accurately measured, which expands the use of measuring instruments.
Smart Images
Figure CN222211586U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring tools, in particular to a building distance meter based on grating angle measurement. Background Art
[0002] At present, it is often necessary to measure the distance between two points during construction. Tape measures and rangefinders are commonly used. When measuring with a tape measure, just fix the tape measure between the points to be measured and read the value. When measuring with a rangefinder, fix the rangefinder at a point to be measured, turn on the rangefinder, and emit a laser on the rangefinder to aim at another point to be measured. After reflection, the laser is received by the photoelectric detection device on the rangefinder and transmits a signal to the chip. The chip calculates the time it takes for the light to travel back and forth between the two points to be measured, thereby obtaining the distance between the two points. When using the above two methods to measure the distance between two points, it is necessary to approach one of the points to be measured and fix the measuring tool on the point to be measured. The method of measuring between two points has limitations in many measurement scenarios, such as when the measurement space is small or there are obstacles. Such situations cannot be achieved through two-point measurement.
[0003] Therefore, there is a need for a building distance meter based on grating angle measurement that solves the above problems. Utility Model Content
[0004] The utility model provides a building distance meter based on grating angle measurement, which realizes measuring the distance between two points at a third point, solves the distance measurement problem in a narrow space or a space with obstacles, and enables the distance meter to complete the work of measuring distance in more scenes.
[0005] The technical solution of the utility model is achieved in this way:
[0006] The building distance meter based on grating angle measurement comprises a bracket, a fixed shell arranged horizontally is fixedly mounted on the bracket, a rotating shell is hinged on the fixed shell, a fixed plate is fixedly mounted on the fixed shell, a rotating plate is fixedly mounted on the rotating shell, a driving pulley and two angle-changing driven pulleys arranged obliquely are rotatably mounted on the fixed plate, three guide wheels for guiding the belt are arranged on the fixed plate, the driving pulley is transmission-connected with a driving motor, the belt is arranged between the driving pulley, the angle-changing driven pulley, the guide wheel and the rotating plate, and the belt is connected to the driving pulley and the angle-changing driven pulley The belt is engaged, and is fixed by a tension adjustment mechanism arranged on the rotating plate. A capacitive sensor for measuring the rotation angle of the rotating shell is arranged between the fixed shell and the rotating shell. A first laser transmitter and a first laser receiver for measuring the distance between a first point and an instrument are arranged on the side wall of the fixed shell. A second laser transmitter and a second laser receiver for measuring the distance between a second point and the instrument are arranged on the side wall of the rotating shell. A chip and a display screen are fixedly mounted on the fixed shell, and the chip is electrically connected to the capacitive sensor, the first laser receiver, the second laser receiver and the display screen.
[0007] As a preferred technical solution, the capacitive grid sensor includes a fixed grid fixedly mounted on the fixed housing and a moving grid fixedly mounted on the rotating housing, the fixed grid is provided with a plurality of annularly evenly distributed reflective electrode sheets, and the moving grid is provided with a plurality of annularly evenly distributed emitting electrode sheets.
[0008] As a preferred technical solution, the tension adjustment mechanism includes two symmetrically arranged clamping blocks and a limit plate for abutting against the clamping blocks, each of the clamping blocks is rotatably mounted on the rotating plate, and the limit plate is fixedly mounted on the rotating plate by bolts.
[0009] As a preferred technical solution, the bracket includes a platform, and a retractable triangular bracket is fixedly installed below the platform.
[0010] As a preferred technical solution, the hinge position between the fixed plate and the rotating plate and the hinge position between the fixed housing and the rotating housing are located on the same axis.
[0011] By adopting the above technical solution, the beneficial effects of the utility model are as follows:
[0012] Since the building distance meter based on grating angle measurement includes a capacitive grating sensor, the capacitive grating sensor includes a fixed grating fixedly mounted on a fixed shell and a moving grating fixedly mounted on a rotating shell, when the fixed shell and the rotating shell rotate under the drive of a motor, the fixed grating and the moving grating rotate accordingly, and the reflecting electrode sheet and the transmitting electrode sheet generate an induction signal whose phase and frequency change with the rotation change. The capacitive grating sensor transmits the signal to the chip to calculate the rotation angle of the moving grating. Since the moving grating is fixed on the rotating shell, the angle between the fixed shell and the rotating shell is obtained; since a first laser emitter and a first laser receiver are arranged on the side wall of the fixed shell, and a second laser emitter and a second laser receiver are arranged on the side wall of the rotating shell Laser receiver, the first laser transmitter is aimed at the first point to be measured, the laser is received by the first laser receiver after reflection, and the signal is transmitted to the chip. The chip calculates the distance between the first point and the instrument through the round-trip time of light. Similarly, the second laser transmitter is aimed at the second point to be measured, the laser is received by the second laser receiver after reflection, and the signal is transmitted to the chip. The chip calculates the distance between the second point and the instrument through the round-trip time of light. After obtaining the distance between the two measured points and the instrument and the angle between the first shell and the second shell, the chip can calculate the distance between the two measured points through the formula, so that the distance between the two points can be measured in a small space or an obstacle space, thereby increasing the use scenarios of the measuring instrument.
[0013] Since the building distance meter based on grating angle measurement includes a tension adjustment mechanism, the tension adjustment mechanism includes two clamping blocks and a limit plate. The belt can be tightened while the clamping block hinged on the rotating plate is rotated to close the belt to the rotating plate. The limit plate is then close to the clamping block, and the bolts are tightened to fix the limit plate, thereby fixing the clamping block and the belt to the rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;
[0017] Figure 3 for Figure 1 A cross-sectional schematic diagram along the BB direction;
[0018] Figure 4 It is a structural schematic diagram of the utility model in use state;
[0019] Figure 5 It is a structural schematic diagram of a capacitive gate sensor;
[0020] Figure 6 This is a circuit connection diagram of the utility model.
[0021] Among them: 1. Fixed shell; 2. Rotating shell; 3. Fixed plate; 4. Rotating plate; 5. Active pulley; 6. Angle reversing driven pulley; 7. Belt; 8. Guide wheel; 9. Driving motor; 10. First laser transmitter; 11. First laser receiver; 12. Second laser transmitter; 13. Second laser receiver; 14. Chip; 15. Display screen; 16. Fixed grid; 17. Moving grid; 18. Reflective electrode sheet; 19. Transmitting electrode sheet; 20. Clamping block; 21. Limiting plate; 22. Bolt; 23. Platform; 24. Triangular bracket. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] like Figure 1-Figure 6As shown together, a building distance meter based on grating angle measurement includes a bracket, on which a horizontally arranged fixed shell 1 is fixedly mounted, a rotating shell 2 is hinged on the fixed shell 1, a fixed plate 3 is fixedly mounted on the fixed shell 1, a rotating plate 4 is fixedly mounted on the rotating shell 2, a driving pulley 5 and two inclined angle-changing driven pulleys 6 are rotatably mounted on the fixed plate 3, three guide wheels 8 for guiding the belt 7 are arranged on the fixed plate 3, the driving pulley 5 is transmission-connected with a driving motor 9, a belt 7 is arranged between the driving pulley 5, the angle-changing driven pulley 6, the guide wheels 8 and the rotating plate 4, the belt 7 is meshed with the driving pulley 5 and the angle-changing driven pulley 6, the belt 7 is fixed by a tension adjustment mechanism arranged on the rotating plate 4, and a device for measuring the rotation angle θ of the rotating shell 2 is arranged between the fixed shell 1 and the rotating shell 2. A capacitive barrier sensor is provided, a first laser emitter 10 and a first laser receiver 11 for measuring a distance a between a first point and an instrument are arranged on the side wall of the fixed housing 1, a second laser emitter 12 and a second laser receiver 13 for measuring a distance b between a second point and the instrument are arranged on the side wall of the rotating housing 2, a chip 14 and a display screen 15 are fixedly mounted on the fixed housing 1, the chip 14 is electrically connected to the capacitive barrier sensor, the first laser receiver 11, the second laser receiver 13 and the display screen 15, in this embodiment, the chip 14 adopts a VK16K33 chip, the first laser emitter 10 and the second laser emitter 12 both adopt laser emitters of Yuze Company, and the first laser receiver 11 and the second laser receiver 13 both adopt WDR110 receivers of Tianjin Sina Intelligent Technology Co., Ltd.
[0024] like Figure 5 As shown, the capacitive grid sensor includes a fixed grid 16 fixedly mounted on the fixed housing 1 and a moving grid 17 fixedly mounted on the rotating housing 2. The fixed grid 16 is provided with a plurality of annularly evenly distributed reflective electrode sheets 18, and the moving grid 17 is provided with a plurality of annularly evenly distributed emitting electrode sheets 19.
[0025] Secondly, the tension adjustment mechanism includes two symmetrically arranged clamping blocks 20 and a limit plate 21 for pressing against the clamping blocks 20 . Each clamping block 20 is rotatably mounted on the rotating plate 4 , and the limit plate 21 is fixedly mounted on the rotating plate 4 by bolts 22 .
[0026] Furthermore, the support comprises a platform 23 , and a retractable triangular support 24 is fixedly installed below the platform 23 .
[0027] Furthermore, the hinged position between the fixed plate 3 and the rotating plate 4 and the hinged position between the fixed housing 1 and the rotating housing 2 are located on the same axis.
[0028] The method of using the utility model is as follows:
[0029] The first step is to place the building rangefinder based on grating angle measurement at the third point outside the line connecting the two points to be measured, turn on the instrument, aim the laser emitted by the first laser transmitter 10 at the first point to be measured, and the laser is reflected after reaching the first point to be measured. After reflection, it is received by the first laser receiver 11, and the first laser receiver 11 transmits the signal to the chip 14. The chip 14 calculates the round-trip time of the light to obtain the distance a between the first point to be measured and the instrument.
[0030] The second step is to start the first motor, which drives the active pulley 5 to rotate, and the active pulley 5 drives the belt 7 to rotate. Since the belt 7 is fixed on the rotating plate 4, and the rotating plate 4 is fixed on the rotating shell 2, the rotating shell 2 rotates. When the laser emitted by the second laser emitter 12 is aligned with the second point to be measured, the rotation is stopped. In this process, the fixed shell 1 and the rotating shell 2 rotate relative to each other.
[0031] In the third step, due to the relative rotation of the fixed shell 1 and the rotating shell 2, the fixed grid 16 arranged on the fixed shell 1 and the moving grid 17 arranged on the rotating shell 2 generate relative rotation, and then the reflecting electrode sheet 18 and the transmitting electrode sheet 19 generate an induction signal whose phase and frequency change with the rotation change. The capacitive grid sensor transmits the signal to the chip 14 to calculate the displacement angle θ.
[0032] In the fourth step, when the laser emitted by the second laser transmitter 12 is aimed at the second point to be measured, the laser is received by the second laser receiver 13 after reflection. The second laser receiver 13 transmits the signal to the chip 14. The chip 14 calculates the round-trip time of the light to obtain the distance b between the second point to be measured and the instrument.
[0033] Step 5, chip 14 passes the formula: The distance c between the two points is calculated and displayed on the display screen 15, thereby completing the measurement of the distance between the two points at a third point outside the line connecting the two points to be measured.
[0034] In summary, the utility model proposes a building rangefinder based on grating angle measurement, which realizes the measurement of the distance between two points at a third point, solves the distance measurement problem in a narrow space or a space with obstacles, and enables the rangefinder to complete the distance measurement task in more scenarios.
[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. Building distance meter based on grating angle measurement, including bracket, It is characterized in that The bracket is fixedly mounted with a horizontally arranged fixed shell, the fixed shell is hinged with a rotating shell, the fixed shell is fixedly mounted with a fixed plate, the rotating shell is fixedly mounted with a rotating plate, a driving pulley and two inclined angle-reversing driven pulleys are rotatably mounted on the fixed plate, three guide wheels for guiding the belts are arranged on the fixed plate, the driving pulley is transmission-connected with a driving motor, the belt is arranged between the driving pulley, the angle-reversing driven pulley, the guide wheel and the rotating plate, the belt is meshed with the driving pulley and the angle-reversing driven pulley, and the belt is arranged The invention is fixed to the tension adjustment mechanism on the rotating plate, a capacitive sensor for measuring the rotation angle of the rotating shell is arranged between the fixed shell and the rotating shell, a first laser transmitter and a first laser receiver for measuring the distance between a first point and the instrument are arranged on the side wall of the fixed shell, a second laser transmitter and a second laser receiver for measuring the distance between a second point and the instrument are arranged on the side wall of the rotating shell, a chip and a display screen are fixedly mounted on the fixed shell, and the chip is electrically connected to the capacitive sensor, the first laser receiver, the second laser receiver and the display screen.
2. The building distance meter based on grating angle measurement according to claim 1, It is characterized in that The capacitive grid sensor comprises a fixed grid fixedly mounted on the fixed housing and a moving grid fixedly mounted on the rotating housing. The fixed grid is provided with a plurality of annularly evenly distributed reflecting electrode sheets, and the moving grid is provided with a plurality of annularly evenly distributed transmitting electrode sheets.
3. The building distance meter based on grating angle measurement according to claim 1, It is characterized in that The tension adjustment mechanism includes two symmetrically arranged clamping blocks and a limit plate for abutting against the clamping blocks. Each of the clamping blocks is rotatably mounted on the rotating plate, and the limit plate is fixedly mounted on the rotating plate by bolts.
4. The building distance meter based on grating angle measurement according to claim 1, It is characterized in that The support comprises a platform, and a retractable triangular support is fixedly installed below the platform.
5. The building distance meter based on grating angle measurement according to claim 1, It is characterized in that The hinged position between the fixed plate and the rotating plate and the hinged position between the fixed shell and the rotating shell are located on the same axis.