CN115407349A - Image capture auxiliary multi-line laser ranging module - Google Patents
Image capture auxiliary multi-line laser ranging module Download PDFInfo
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- CN115407349A CN115407349A CN202211025422.5A CN202211025422A CN115407349A CN 115407349 A CN115407349 A CN 115407349A CN 202211025422 A CN202211025422 A CN 202211025422A CN 115407349 A CN115407349 A CN 115407349A
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- laser
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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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/4802—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
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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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention discloses an image capture-assisted multi-line laser ranging module. The problem that the receiving processing difficulty is large due to the fact that the laser receiving laser is too weak when the laser ranging module receives the reflected laser in the prior art is solved; the system comprises a positioning laser emission module, a measuring laser emission module, an image capturing module and a core processor, wherein the image capturing module comprises an image sensor and a display improver; the core processor transfers the positioning laser emission module to emit two vertically crossed standard positioning lasers and one auxiliary laser, and the measurement laser emission module emits a plurality of measurement lasers to the measurement point; the image sensor receives the reflected laser beam, calculates and images the laser beam to the display improving device. The method solves the problems in two aspects of enhancing the initial measurement laser and improving the received laser information, and can obtain accurate reflected laser information so as to obtain accurate image information to be measured.
Description
Technical Field
The invention relates to the field of laser ranging, in particular to an image capture-assisted multi-line laser ranging module.
Background
Along with the development of large-scale domestic engineering, the requirements for large-scene and long-distance measurement are more and more. In large scenes, remote measurement and mapping, accurate positioning of a target point is a difficulty in actual operation. Therefore, a distance measuring instrument with an image function is required to be capable of acquiring and displaying the information of the measuring position and the target point in real time. The core component of the distance measuring instrument with the image function is usually a laser distance measuring module, and most of the products with good display effects at present depend on import. In addition, the existing civil laser ranging technology mostly adopts reflection receiving, and the distance is measured by taking an average value after multiple reflections in a longer time. However, in the reflective receiving process, the intensity of the optical signal is smaller than that in the direct receiving process, and the optical signal is very weak when the distance is longer, so that the receiving and processing are difficult, and the cost of the receiving device is high.
For example, a line laser distance measuring device and method disclosed in chinese patent document, whose publication No. CN108489453A includes a plurality of line laser light source modules and an image collecting device, wherein the plurality of line laser light source modules are respectively used for detecting objects at different distances, the image collecting device sequentially obtains images of external objects at different times, and then selects an optimal image to determine the distance between the external objects, so as to measure the objects at different distances. However, this device is susceptible to stray radiation, resulting in inaccurate image information, and thus has certain drawbacks.
Disclosure of Invention
The invention mainly solves the problem that the receiving processing difficulty is large because the laser ranging module receives the reflected laser light too weak in the prior art; the image capture-assisted multi-line laser ranging module solves the problems in two aspects of enhancing initial measurement laser and improving received laser information, and can acquire accurate reflected laser information so as to acquire accurate image information to be detected.
The technical problem of the invention is mainly solved by the following technical scheme:
the invention comprises a line laser emission assembly, wherein the line laser emission assembly comprises a positioning laser emission module and a measuring laser emission module; the core processor transfers the positioning laser emission module to emit two vertically crossed standard positioning lasers and one auxiliary laser, and the measurement laser emission module emits a plurality of measurement lasers to the measurement point; the image sensor receives the reflected laser beam, calculates and images the laser beam to the display improving device.
Preferably, the image capturing module is further provided with an internal memory and an image comparator, the image sensor and the display improving device are matched to acquire an image captured before line laser emission and store the image into the internal memory, and an image captured after line laser emission and store the image into the image comparator.
Preferably, the measurement laser emission module emits four measurement lasers to the same measurement point at the same time, included angles are formed between the auxiliary laser and the standard positioning laser and between the auxiliary laser and the measurement laser, and the included angle range is set to be 37-53 degrees; the laser emission module is also provided with a time-sharing controller, time-sharing signals are output to the internal component and the core processor of the laser emission module at intervals, and the core processor forwards the time-sharing signals to the image sensor.
Preferably, the image sensor is further internally provided with an image processing module, the image processing module acquires an marginalized anchor point for the captured image, sets a standard pixel value through the marginalized anchor point, counts all pixel information, excludes pixel points lower than the standard pixel value, stores the processed image information into an internal memory, and sends a copy to the image comparator.
Preferably, the image sensor compares the processed images before and after the line laser emission in the image comparator, determines the distance and the direction of the external object to be measured according to the particle difference and the received reflected line laser information, and transmits the images after the line laser emission and the information of the object to be measured to the display improving device.
Preferably, the line laser emission assembly emits measurement laser to a plurality of measurement points respectively in the same time-sharing period, and the measurement laser is projected in a radiation mode.
Preferably, the display improving device comprises a display module and a light sensation improving structure, the light sensation improving structure comprises an object eyepiece module and a prism group, the object eyepiece module receives the reflected linear laser and transmits the linear laser to the prism group, the prism group transmits the refracted and reflected linear laser to the display module, and the display module is a high-transmittance light-emitting element.
The invention has the beneficial effects that:
1. the line laser emitting assembly emits multi-beam laser in the time-sharing measurement process, comprises a plurality of measuring lasers, standard positioning lasers and auxiliary lasers, the laser intensity of a single measuring point is enhanced through the plurality of measuring lasers, and accurate pixel point information and positions are determined through the standard positioning lasers and the auxiliary lasers in an auxiliary mode;
2. the display improving device is provided with the object eyepiece module and the prism module, so that stray radiation can be effectively filtered, effective radiation can be enhanced, the received laser information and image information are displayed by the high-transmittance light-emitting element, and a laser ranging result can be observed more intuitively and accurately.
Drawings
FIG. 1 is a diagram of an image capture-assisted multiline laser ranging module according to the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
The embodiment is as follows:
an image capture-assisted multi-line laser ranging module of the present embodiment, as shown in fig. 1, includes a line laser emitting assembly, an image capture module, and a core processor; the line laser emission assembly comprises a positioning laser emission module and a measuring laser emission module; the image capturing module comprises an image sensor, a display improver, an image processing module, an internal memory and an image comparator; the display improving device comprises a display module and a light sensation improving structure, wherein the light sensation improving structure comprises an object eyepiece module and a prism group; the core processor transfers the positioning laser emission module to emit two vertically crossed standard positioning lasers and one auxiliary laser, and the measurement laser emission module emits a plurality of measurement lasers to the measurement point; the image sensor receives the reflected laser beam, calculates the laser beam and images the laser beam to the display improver.
The measuring laser emission module emits four measuring lasers to the same measuring point at the same time, included angles are arranged among the auxiliary laser, the standard positioning laser and the measuring lasers, and the included angle range is set to be 37-53 degrees; the laser emission module is also provided with a time-sharing controller which outputs time-sharing signals to the internal components and the core processor of the laser emission module at intervals, and the core processor forwards the time-sharing signals to the image sensor.
The image sensor and the display improving device are matched to acquire an image captured before line laser emission and store the image into an internal memory, and an image captured after line laser emission and store the image into an image comparator; the image processing module acquires an marginalized anchor point for the captured image, sets a standard pixel value through the marginalized anchor point, counts all pixel point information, excludes pixel points lower than the standard pixel value, stores the processed image information into an internal memory, and sends a copy to an image comparator; the image sensor compares the processed images before and after the line laser is emitted in the image comparator, determines the distance and the direction of an external object to be detected according to the particle difference and the received reflected line laser information, and transmits the images after the line laser is emitted and the information of the object to be detected to the display improving device.
The object ocular lens module receives the reflected line laser and transmits the line laser to the prism group, and the prism group transmits the refracted and reflected line laser to the display module, wherein the display module is a high-transmittance light-emitting element. The outer line laser emission component emits measuring laser to a plurality of measuring points respectively in the same time-sharing period, and the measuring laser is projected in a radiation mode.
It should be understood that the examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention can be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the claims appended to the present application.
Claims (7)
1. The image capture-assisted multi-line laser ranging module comprises a line laser emitting assembly and is characterized in that the line laser emitting assembly comprises a positioning laser emitting module and a measuring laser emitting module, the ranging module further comprises an image capturing module and a core processor, and the image capturing module comprises an image sensor and a display improver; the core processor transfers the positioning laser emission module to emit two vertically crossed standard positioning lasers and one auxiliary laser, and the measurement laser emission module emits a plurality of measurement lasers to the measurement point; the image sensor receives the reflected laser beam, calculates the laser beam and images the laser beam to the display improver.
2. The image capture-assisted multiline laser ranging module of claim 1, wherein the image capture module further comprises an internal memory and an image comparator, the image sensor and the display improver cooperate to capture an image captured before line laser emission and store the captured image into the internal memory, and to capture an image captured after line laser emission and store the captured image into the image comparator.
3. The image capturing-assisted multiline laser ranging module according to claim 2, wherein the measurement laser emitting module emits four measurement lasers to a same measurement point at the same time, and included angles are formed between the auxiliary laser and the standard positioning laser and between the auxiliary laser and the measurement laser, and are set to be 37-53 degrees; the laser emission module is also provided with a time-sharing controller which outputs time-sharing signals to the internal component and the core processor of the laser emission module at intervals, and the core processor forwards the time-sharing signals to the image sensor.
4. The image capture-assisted multiline laser ranging module according to claim 3, wherein an image processing module is further arranged inside the image sensor, the image processing module acquires marginalized anchors for the captured image, sets standard pixel values through the marginalized anchors, counts all pixel information, excludes pixel values lower than the standard pixel values, stores the processed image information in an internal memory, and sends a copy to the image comparator.
5. The image-capturing-assisted multiline laser ranging module according to claim 3 or 4, wherein the image sensor compares processed images before and after line laser emission in an image comparator, determines the distance and the direction of an external object to be measured according to particle differences and received reflected line laser information, and transmits the images after line laser emission and the object information to a display improver.
6. The image capture-assisted multiline laser ranging module of claim 5, wherein the line laser emitting assembly emits measuring lasers to a plurality of measuring points respectively in the same time sharing period, and the measuring lasers are all projected in a radiation manner.
7. The image capture-assisted multiline laser ranging module according to claim 4 or 6, wherein the display improving device comprises a display module and a light sensation improving structure, the light sensation improving structure comprises an objective lens module and a prism group, the objective lens module receives the reflected line laser and transmits the reflected line laser to the prism group, the prism group transmits the refracted and reflected line laser to the display module, and the display module is a high-transmittance light emitting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211025422.5A CN115407349A (en) | 2022-08-25 | 2022-08-25 | Image capture auxiliary multi-line laser ranging module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211025422.5A CN115407349A (en) | 2022-08-25 | 2022-08-25 | Image capture auxiliary multi-line laser ranging module |
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| CN115407349A true CN115407349A (en) | 2022-11-29 |
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| CN202211025422.5A Pending CN115407349A (en) | 2022-08-25 | 2022-08-25 | Image capture auxiliary multi-line laser ranging module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117805853A (en) * | 2024-02-29 | 2024-04-02 | 钛玛科（北京）工业科技有限公司 | Laser reflection type edge detection device and method |
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- 2022-08-25 CN CN202211025422.5A patent/CN115407349A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117805853A (en) * | 2024-02-29 | 2024-04-02 | 钛玛科（北京）工业科技有限公司 | Laser reflection type edge detection device and method |
| CN117805853B (en) * | 2024-02-29 | 2024-05-14 | 钛玛科（北京）工业科技有限公司 | Laser reflection type edge detection device and method |
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