CN219200410U - Automatic field gradient measuring device - Google Patents
Automatic field gradient measuring device Download PDFInfo
- Publication number
- CN219200410U CN219200410U CN202223566134.9U CN202223566134U CN219200410U CN 219200410 U CN219200410 U CN 219200410U CN 202223566134 U CN202223566134 U CN 202223566134U CN 219200410 U CN219200410 U CN 219200410U
- Authority
- CN
- China
- Prior art keywords
- laser
- input end
- output end
- prism
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The utility model belongs to the technical field of intelligent agricultural machinery intelligent technology identification equipment, and particularly relates to an automatic field gradient measuring device which comprises a laser measuring device, a triaxial accelerometer, a triaxial magnetic sensor, an air pressure sensor, a data comparator, a feedback module, an A/D converter and a microprocessor, wherein the laser measuring device is connected with the triaxial accelerometer; the laser measuring device comprises a laser emitting system, a laser processing system and a laser receiving system; the laser processing system comprises a reflecting mirror, a liquid prism, an air column, a right-angle prism and a half-lens; the laser receiving system comprises a light wave filtering module and a photoelectric converter; the output end of the triaxial accelerometer, the triaxial magnetic sensor and the air pressure sensor are connected with the input end of the data comparator, the output end of the data comparator is connected with the input end of the feedback module, the output end of the feedback module is connected with the input end of the A/D converter, the output end of the A/D converter is connected with the input end of the microprocessor, and the output end of the microprocessor is connected with the input end of the feedback module.
Description
Technical Field
The utility model belongs to the technical field of intelligent agricultural machinery intelligent technology identification equipment, and particularly relates to an automatic field gradient measuring device.
Background
The field gradient is an important parameter affecting the running safety of the tractor and the operation effect of the matched device. A large number of measurements are required during automatic tractor operation to ensure tractor operation quality and accuracy, while grade is an important component of field information. Therefore, the method for acquiring the gradient information efficiently, quickly, accurately and conveniently has great significance and value.
The total station type electronic tachometer in the prior art can finish the measurement of horizontal angle, vertical angle, distance (inclined distance and straight distance) and height difference by arranging the instrument once, but the device is inconvenient to carry and use, and in the use process, a measurer is required to observe the reading measured by the device, and the real-time gradient information cannot be acquired.
In the prior art, the patent with the publication number of CN212357908U discloses a gradient measuring tool, which comprises a box body, a floating plate, a cover plate and a base, wherein an observation window is fixedly arranged on the front surface of the box body, a scale is arranged on the surface of the observation window, a water tank is arranged in the box body, a movable groove is arranged in the middle of the water tank, a chute is arranged on the lower surface of the box body, and a clamping groove is arranged on the inner surface of the chute; through setting up the water tank and accomodating a certain amount of water, the kickboard is in balanced state under buoyancy effect, when placing the device on inclined surface, the incasement water surface still keeps the level to make the kickboard on the surface of water keep the level, and the box inclines along with the road surface slope, can survey the marking indication angle on the kickboard through the scale on the observation window, can obtain the road surface slope. The measuring device has poor measuring precision on uneven ground and can not meet the requirement of high-precision gradient measurement.
Disclosure of Invention
Aiming at the technical problems, the utility model aims to provide an automatic field gradient measuring device so as to solve the problem of how to measure the field gradient in real time with high precision.
In order to achieve the above object, the present utility model provides the following technical solutions:
an automatic measuring device for the gradient of a field comprises a laser measuring device 1, a triaxial accelerometer 5, a triaxial magnetic sensor 6, an air pressure sensor 7, a data comparator 8, a feedback module 9, an A/D converter 10 and a microprocessor 11.
The laser measuring device 1 comprises a laser emitting system 2, a laser processing system 3 and a laser receiving system 4, wherein the input end of the laser processing system 3 is connected with the output end of the laser emitting system 2, and the output end of the laser processing system 3 is connected with the input end of the laser receiving system 4 and is used for collecting light spot offset information.
The laser emission system 2 comprises a laser emitter 21, a beam expansion collimation system 22 and a spatial light modulator 23; the output end of the laser emitter 21 is connected with the input end of the beam expansion and collimation system 22, the input end of the spatial light modulator 23 receives external natural light and adjusts the external natural light to remove interference factors, and the output end of the beam expansion and collimation system 22 and the output end of the spatial light modulator 23 output laser signals and enter the input end of the laser processing system 3.
The laser processing system 3 includes a mirror 31, a liquid prism 32, an air column 33, a right angle prism 34, and a semi-transparent mirror 35.
The reflecting mirror 31 is positioned above the semi-lens 35 which is horizontally arranged, and the angle between the reflecting mirror 31 and the semi-lens 35 is 45 degrees; the angle between the laser beam emitted by the laser emission system 2 and the reflecting mirror 31 is 45 degrees, the laser beam vertically enters the half lens 35 at 90 degrees, and the incident point is positioned at the center point of the half lens 35; a liquid prism 32, an air column 33 and a right angle prism 34 are horizontally arranged below the half lens 35 in sequence; the liquid container 321 of the liquid prism 32 accommodates the liquid 322 therein.
After being reflected by the reflecting mirror 31, the laser emitted by the laser emission system 2 is sequentially emitted into the right-angle prism 34 through the semi-transparent mirror 35, the liquid prism 32 and the air column 33; after being reflected by the right angle prism 34, the light is reflected by the air column 33 and the liquid prism 32 on the semi-transparent mirror 35, and the reflected light passing through the semi-transparent mirror 35 is received by the laser receiving system 4, and the light spot offset information is output.
The laser receiving system 4 comprises a light wave filtering module 41 and a photoelectric converter 42; the input end of the optical wave filtering module 41 receives the laser signal output by the laser processing system 3, namely the semi-transparent mirror 35, the output end of the optical wave filtering module 41 is connected with the input end of the photoelectric converter 42, and the output end of the photoelectric converter 42 is connected with the input end of the a/D converter 10.
The output ends of the triaxial accelerometer 5, the triaxial magnetic sensor 6 and the air pressure sensor 7 are connected with the input end of the data comparator 8, the output end of the data comparator 8 is connected with the input end of the feedback module 9, the output end of the feedback module 9 is connected with the input end of the A/D converter 10, the output end of the A/D converter 10 is connected with the input end of the microprocessor 11, and the output end of the microprocessor 11 is connected with the input end of the feedback module 9.
The automatic field gradient measuring device further comprises a gyroscope 12, an audible and visual alarm 13, a TTL serial port-to-CAN module 14 and a CAN bus 15; the signals processed by the microprocessor 11 are converted by the A/D converter 10, then transmitted to the gyroscope 12 and the audible and visual alarm 13, and the measured real-time local gradient information is transmitted through the TTL serial port-CAN module 14 and the CAN bus 15.
If the laser measuring device 1 is in the horizontal position, the liquid surface of the liquid 322 in the liquid prism 32 is horizontal, and the laser light vertically enters the liquid prism 32 and the air column 33 along the first light path 1 without deflection; then vertically incident on the right-angle prism 34 along the first light path 1, reflected by the right-angle prism 34 and reversely emitted along the original light path, and finally the light spot falls on the center point of the half lens 35;
if the laser measuring device 1 is in an inclined state, the liquid surface of the liquid 322 in the liquid prism 32 is inclined, and the laser beam deflects along the second optical path 2 after entering the liquid prism 32 and the air column 33; then, the light enters the right angle prism 34 along the second light path 2 in an inclined way, is reflected by the right angle prism 34 and then is emitted along the second light path 2, and the reflected light spot falls on the position of the half lens 35 deviating from the center point through the deflection of the liquid prism 32 and the air column 33.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, accurate and stable detection of the field gradient can be realized through the laser measuring device, the sensor and the microprocessor; finally, the field gradient of tractor operation is obtained in real time by using a CAN bus mode.
2. The gyroscope is arranged outside the laser emission system in the laser measuring device, so that the stability of laser measurement can be greatly enhanced, the laser measurement precision is effectively prevented from being influenced due to vibration of field operation, and the precision of field gradient test is well improved.
3. The inside of the laser receiving system in the laser measuring device is provided with the light wave filtering module, so that external light waves can be effectively filtered, the laser measuring device is prevented from being affected by different external light waves, and error detection of the laser measuring device is caused, and the normal distance measurement of the laser measuring device is ensured.
Drawings
FIG. 1 is a schematic view of the appearance of an automatic field gradient measuring device according to the present utility model;
FIG. 2 is a schematic diagram of a laser processing system 3 of the present utility model;
fig. 3 is a system block diagram of the present utility model.
Wherein the reference numerals are as follows:
1. laser measuring device
2. Laser emission system
21. Laser transmitter
22. Beam expanding collimation system
23. Spatial light modulator
3. Laser processing system
31. Reflecting mirror
32. Liquid prism
321. Liquid container
322. Liquid
33. Air column
34. Right-angle prism
35. Semi-lens
4. Laser receiving system
5. Triaxial accelerometer
6. Triaxial magnetic sensor
7. Air pressure sensor
8. Data comparator
9. Feedback module
10 A/D converter
11. Microprocessor
12. Gyroscope
13. Audible and visual alarm
14 TTL serial port-to-CAN module
15 CAN bus
Detailed Description
The utility model will be further described with reference to the drawings and examples.
Referring to fig. 1 to 3, the automatic field gradient measuring device of the present utility model includes a laser measuring device 1, a triaxial accelerometer 5, a triaxial magnetic sensor 6, an air pressure sensor 7, a data comparator 8, a feedback module 9, an a/D converter 10, a microprocessor 11, a gyroscope 12, an audible and visual alarm 13, a TTL serial port to CAN module 14 and a CAN bus 15.
The laser measuring device 1 is fixedly connected to a fixed plate at the front end of any carrier, the rear side of the laser measuring device 1 is fixedly connected with a gyroscope 12, the inner side of the front end of the carrier is fixedly connected with a triaxial accelerometer 5, a triaxial magnetic sensor 6, an air pressure sensor 7 and a microprocessor 11, the top of the front end of the carrier is fixedly provided with an audible and visual alarm 13, and the audible and visual alarm 13 is an alarm lamp capable of sounding and flashing, and has a very glaring flash irradiation lamp, so that the attention of a driver can be drawn.
The laser measuring device 1 comprises a laser emitting system 2, a laser processing system 3 and a laser receiving system 4, wherein the input end of the laser processing system 3 is connected with the output end of the laser emitting system 2, and the output end of the laser processing system 3 is connected with the input end of the laser receiving system 4 and is used for collecting light spot offset information.
The laser emission system 2 comprises a laser emitter 21, a beam expansion collimation system 22 and a spatial light modulator 23; the output end of the laser emitter 21 is connected with the input end of the beam expansion and collimation system 22, the input end of the spatial light modulator 23 receives external natural light and adjusts the external natural light to remove interference factors, and the output end of the beam expansion and collimation system 22 and the output end of the spatial light modulator 23 output laser signals and enter the input end of the laser processing system 3.
The laser processing system 3 includes a mirror 31, a liquid prism 32, an air column 33, a right angle prism 34, and a semi-transparent mirror 35.
The mirror 31 is positioned above the horizontally arranged half lens 35 at an angle of 45 ° to the half lens 35. The angle between the laser beam emitted from the laser emitting system 2 and the reflecting mirror 31 is 45 °, the laser beam is perpendicularly incident on the half lens 35 at 90 °, and the incident point is located at the center point of the half lens 35.
A liquid prism 32, an air column 33 and a right angle prism 34 are horizontally arranged below the half lens 35 in this order. The liquid container 321 of the liquid prism 32 accommodates the liquid 322 therein.
After being reflected by the reflecting mirror 31, the laser emitted by the laser emission system 2 is sequentially emitted into the right-angle prism 34 through the semi-transparent mirror 35, the liquid prism 32 and the air column 33; after being reflected by the right angle prism 34, the light is reflected by the air column 33 and the liquid prism 32 on the semi-transparent mirror 35, and the reflected light passing through the semi-transparent mirror 35 is received by the laser receiving system 4, and the light spot offset information is output.
As shown in fig. 2, when the laser measuring device 1 is in the horizontal position, the liquid surface of the liquid 322 in the liquid prism 32 is horizontal, and the laser light is vertically incident on the liquid prism 32 and the air column 33 along the first optical path 1, so that no deflection occurs; then vertically incident on the right-angle prism 34 along the first light path 1, reflected by the right-angle prism 34, and then reversely emitted along the original light path, and finally the light spot falls on the center point of the half lens 35.
If the laser measuring device 1 is in an inclined state, the liquid surface of the liquid 322 in the liquid prism 32 is inclined, and the laser beam deflects along the second optical path 2 after entering the liquid prism 32 and the air column 33; then, the light enters the right angle prism 34 along the second light path 2 in an inclined way, is reflected by the right angle prism 34 and then is emitted along the second light path 2, and the reflected light spot falls on the position of the half lens 35 deviating from the center point through the deflection of the liquid prism 32 and the air column 33.
The laser receiving system 4 comprises a light wave filtering module 41 and a photoelectric converter 42; the input end of the optical wave filtering module 41 receives the laser signal output by the laser processing system 3, namely the semi-transparent mirror 35, the output end of the optical wave filtering module 41 is connected with the input end of the photoelectric converter 42, and the output end of the photoelectric converter 42 is connected with the input end of the a/D converter 10.
The output end of the triaxial accelerometer 5, the triaxial magnetic sensor 6 and the air pressure sensor 7 are connected with the input end of the data comparator 8, the output end of the data comparator 8 is connected with the input end of the feedback module 9, the output end of the feedback module 9 is connected with the input end of the A/D converter 10, the output end of the A/D converter 10 is connected with the input end of the microprocessor 11, the output end of the microprocessor 11 is connected with the input end of the feedback module 9, and the processed signals are transmitted to the gyroscope 12 and the audible and visual alarm 13 after being subjected to signal conversion by the A/D converter 10 and are transmitted to the measured real-time local gradient information by the TTL serial port-CAN module 14 and the CAN bus 15.
The working process of the utility model is as follows:
during field operation, the three-axis accelerometer 5, the three-axis magnetic sensor 6 and the air pressure sensor 7 detect the running state of the tractor in real time, and the detected speed, acceleration and direction are respectively transmitted to the A/D converter 10 through the data comparator 8 and the feedback module 9, and the A/D converter 10 converts the output electric signals into digital signals and transmits the digital signals to the microprocessor 11. At the same time, the laser emitting system 2 starts to operate, and the laser emitter 21 emits laser light, and the laser light is calibrated and modulated by the beam expanding and collimating system 22 and the spatial light modulator 23. The optical wave filtering module 41 in the laser receiving system 4 filters the optical signal on the semi-transparent mirror 35, converts the optical signal into an electrical signal through the photoelectric converter 42, and transmits the electrical signal to the a/D converter 10, and the a/D converter 10 converts the output electrical signal into a digital signal and transmits the digital signal to the microprocessor 11.
The microprocessor 11 may be a device with operation and control functions, such as a single-chip microcomputer. The microprocessor 11 receives the deviation value signal measured by the laser receiving system 4 converted by the a/D converter 10, and calculates a gradient value. The microprocessor 11 respectively transmits the processed signals to the gyroscope 12, the audible and visual alarm 13 and the feedback module 9, the stability of the laser emission system 2 is improved through the gyroscope 12, when the vibration is overlarge and exceeds the adjustment capacity range of the gyroscope 12, the audible and visual alarm 13 starts to work, sounds and light alarms are generated, and meanwhile, after the output signals of the microprocessor 11 are detected and calibrated through the feedback module 9, recording and storage are carried out, and the measured real-time local gradient information is transmitted through the TTL serial port-CAN module 14 and the CAN bus 15.
Claims (3)
1. The automatic field gradient measuring device is characterized by comprising a laser measuring device (1), a triaxial accelerometer (5), a triaxial magnetic sensor (6), an air pressure sensor (7), a data comparator (8), a feedback module (9), an A/D converter (10) and a microprocessor (11);
the laser measuring device (1) comprises a laser emitting system (2), a laser processing system (3) and a laser receiving system (4), wherein the input end of the laser processing system (3) is connected with the output end of the laser emitting system (2), and the output end of the laser processing system (3) is connected with the input end of the laser receiving system (4) and is used for collecting light spot offset information;
the laser emission system (2) comprises a laser emitter (21), a beam expansion collimation system (22) and a spatial light modulator (23); the output end of the laser transmitter (21) is connected with the input end of the beam expanding and collimating system (22), the input end of the spatial light modulator (23) receives external natural light and adjusts the natural light to remove interference factors, and the output end of the beam expanding and collimating system (22) and the output end of the spatial light modulator (23) output laser signals and enter the input end of the laser processing system (3);
the laser processing system (3) comprises a reflecting mirror (31), a liquid prism (32), an air column (33), a right-angle prism (34) and a semi-transparent mirror (35);
the reflecting mirror (31) is positioned above the semi-lens (35) which is horizontally arranged, and the angle between the reflecting mirror and the semi-lens (35) is 45 degrees; the angle between the laser beam emitted by the laser emission system (2) and the reflecting mirror (31) is 45 degrees, the laser beam vertically enters the half lens (35) at 90 degrees, and the incident point is positioned at the center point of the half lens (35); a liquid prism (32), an air column (33) and a right-angle prism (34) are horizontally arranged below the semi-lens (35) in sequence; the liquid container (321) of the liquid prism (32) accommodates liquid (322);
after being reflected by a reflecting mirror (31), the laser emitted by the laser emission system (2) is sequentially emitted into a right-angle prism (34) through a semi-transparent mirror (35), a liquid prism (32) and an air column (33); after being reflected by the right angle prism (34), the light is reflected on the semi-transparent mirror (35) by the air column (33) and the liquid prism (32), and the reflected light passing through the semi-transparent mirror (35) is received by the laser receiving system (4) to output light spot offset information;
the laser receiving system (4) comprises a light wave filtering module (41) and a photoelectric converter (42); the input end of the optical wave filtering module (41) receives a laser signal output by the laser processing system (3), namely a semi-transparent mirror (35), the output end of the optical wave filtering module (41) is connected with the input end of a photoelectric converter (42), and the output end of the photoelectric converter (42) is connected with the input end of an A/D converter (10);
the three-axis accelerometer is characterized in that the output ends of the three-axis accelerometer (5), the three-axis magnetic sensor (6) and the air pressure sensor (7) are connected with the input end of the data comparator (8), the output end of the data comparator (8) is connected with the input end of the feedback module (9), the output end of the feedback module (9) is connected with the input end of the A/D converter (10), the output end of the A/D converter (10) is connected with the input end of the microprocessor (11), and the output end of the microprocessor (11) is connected with the input end of the feedback module (9).
2. The automatic field gradient measuring device according to claim 1, further comprising a gyroscope (12), an audible and visual alarm (13), a TTL serial to CAN module (14) and a CAN bus (15); after the signals processed by the microprocessor (11) are subjected to signal conversion by the A/D converter (10), the signals are transmitted to the gyroscope (12) and the audible and visual alarm (13), and the measured real-time local gradient information is transmitted through the TTL serial port-CAN module (14) and the CAN bus (15).
3. The automatic field gradient measurement device according to claim 1, wherein if the laser measurement device (1) is in a horizontal position, the liquid (322) in the liquid prism (32) is level, and the laser light is vertically incident to the liquid prism (32) and the air column (33) along the first optical path without deflection; then vertically incident to a right-angle prism (34) along the first light path, reflected by the right-angle prism (34) and reversely emitted along the original light path, and finally the light spot falls on the center point of a half lens (35);
if the laser measuring device (1) is in an inclined state, the liquid level of the liquid (322) in the liquid prism (32) is inclined, and the laser enters the liquid prism (32) and the air column (33) along the second light path and deflects the light path; then the light is obliquely incident into the right-angle prism (34) along the second light path, reflected by the right-angle prism (34) and emitted along the second light path, and the reflected light spot falls on the position of the semi-lens (35) deviating from the center point through the deflection of the liquid prism (32) and the air column (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223566134.9U CN219200410U (en) | 2022-12-26 | 2022-12-26 | Automatic field gradient measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223566134.9U CN219200410U (en) | 2022-12-26 | 2022-12-26 | Automatic field gradient measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219200410U true CN219200410U (en) | 2023-06-16 |
Family
ID=86717407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223566134.9U Active CN219200410U (en) | 2022-12-26 | 2022-12-26 | Automatic field gradient measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219200410U (en) |
-
2022
- 2022-12-26 CN CN202223566134.9U patent/CN219200410U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1130090A (en) | Projector excursion compensation in wheel alignment systems | |
| CN101576489B (en) | Device for detecting methane or carbon dioxide through optical interference and precision automatic compensation detecting method | |
| GB1468566A (en) | Device fot the automatic measurement of tunnel sections | |
| US4490919A (en) | Leveling arrangement for measuring terrain points | |
| CN104807417A (en) | Rapid measurement method for parallelism error of linear guide rails | |
| CN208579761U (en) | Levelness detection device and system | |
| CN107525472A (en) | A kind of laser displacement sensor site error scaling method | |
| CN210051303U (en) | Tunnel vault subsides and peripheral convergence measuring device | |
| CN2681085Y (en) | Apparatus for measuring three dimensional size using laser | |
| CN219200410U (en) | Automatic field gradient measuring device | |
| CN205785432U (en) | A kind of static level level measurement device based on triangulation laser range principle | |
| CN101922932A (en) | Compensating device of pyramid prism coordinate measuring error | |
| CN106247989B (en) | A kind of guide rail rolling angle field calibration and measuring device and method | |
| CN106595646A (en) | Spot detection module and spot detection based laser positioning system | |
| CN208887626U (en) | A kind of reflective twin shaft optical-electrical level-meter of liquid surface | |
| CN212540054U (en) | Photoresist method particle size analyzer for insoluble particle detection | |
| CN214471200U (en) | Diaphragm type gas table calibrating installation | |
| CN114910874A (en) | Vehicle-mounted laser radar installation and calibration method | |
| CN208833911U (en) | A kind of Hand-hold Distance Finder of rapid survey overhead transmission line vertical height | |
| JPS5796203A (en) | Contactless displacement detector employing optical fiber | |
| CN106017416B (en) | Level gage i angle monitoring device | |
| CN209570168U (en) | Horizontal plate light direct-reading bathymetric surveying device | |
| CN208140322U (en) | A kind of bridge amplitude real-time monitor | |
| CN211527345U (en) | High-precision laser profile scanner for data acquisition | |
| US4355902A (en) | Arrangement for determining the errors the vertical axis of a surveying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |