CN111521116A - Laser projection detection device and detection method for alternate installation - Google Patents
Laser projection detection device and detection method for alternate installation Download PDFInfo
- Publication number
- CN111521116A CN111521116A CN202010449930.0A CN202010449930A CN111521116A CN 111521116 A CN111521116 A CN 111521116A CN 202010449930 A CN202010449930 A CN 202010449930A CN 111521116 A CN111521116 A CN 111521116A
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- laser
- longitudinal
- projection
- transverse
- bottom plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2433—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring outlines by shadow casting
Abstract
The invention discloses a detection device and a detection method for laser projection in alternate installation. The device passes through laser instrument transmitting terminal on the slip table to bottom plate transmission laser, and the speculum that special installation set up on the bottom plate reflects laser back to the laser instrument receiving terminal, and laser does not have the reflected signal when sheltering from by the measuring object to can conveniently confirm the projection boundary of object, and read projection boundary position through the scale, thereby reach the purpose of geometric measurements. The invention has the beneficial effects that: the method can be used for detecting the geometric dimension of intersection facilities such as an anti-dazzle plate and the like. The device is simple to use, and the reading is swift, measures accurately, need not touch the article of being examined at the in-process that detects, reduces the disturbance. The detection method and the detection device solve the problems of non-perpendicularity of light, fuzzy boundary and inaccurate positioning in the traditional optical projection measurement.
Description
Technical Field
The invention relates to a detection test device and a detection method thereof, in particular to a detection device and a detection method for laser projection in intersection and installation, and belongs to the technical field of detection tests.
Background
In the inspection of the intersection facility, the most basic inspection is the inspection of the geometric dimension. The conventional detection method is to measure by using a ruler, a protractor, a caliper and the like, but some intersection devices have complicated geometric shapes, the measurement is not accurate by using the conventional measurement method, and some positions cannot be directly measured. For example, the shape and style of the antiglare shield are very complicated, and common ones include a general straight plate, an inverse S-shape, an imitated relief antiglare shield, a highway landscape antiglare shield, and the like. The national standard requires the detection of the height and the width of different parts of the anti-dazzle plate and requires the detection of the effective wind bearing area for wind load test calculation and the like. The product standard specification requires measurement and calculation by a projection method.
However, the market does not have a mature apparatus dedicated to projection detection. The projector used for the general measurement has: the projector, the searchlight and the like draw lines along the projection boundary by using a pen after projection, and finally measure the line drawing position by using a ruler. The method has the problems that the coaxiality of light rays of the projection equipment is not strong, the light rays are difficult to ensure to vertically irradiate on an object to be measured, the brightness of projection light rays is insufficient, the projection boundary is fuzzy, the drawn line detection work is complicated, and the efficiency is low.
Disclosure of Invention
The present invention is directed to a laser projection inspection apparatus and method for laser projection inspection.
The invention realizes the purpose through the following technical scheme: a laser projection detection device for cross installation comprises a bottom plate, a fixed support, a cross beam, a longitudinal slide rail, a longitudinal slide table, a transverse slide rail, a middle slide table, a longitudinal pointer, a longitudinal scale, a transverse pointer, a transverse scale, a left laser receiving end, a right laser receiving end, a laser emitting end, an LED indicator lamp, a flat glass test table and a reflector; the bottom plate is provided with a fixed support and connected by a cross beam, the two longitudinal sliding rails and the longitudinal scale are arranged on the cross beam, the two longitudinal sliding tables are arranged on the longitudinal sliding rails and can freely slide along the longitudinal direction, the longitudinal sliding table on one side is provided with a longitudinal pointer, the transverse sliding rails and the transverse scale are fixedly arranged on the longitudinal sliding tables, the middle sliding table is arranged on the transverse sliding rails and can freely slide along the transverse direction, the middle sliding table is provided with a left laser receiving end, a right laser receiving end, a laser emitting end, an LED indicator light and other equipment, and the electronic equipment is connected with an external direct current power supply; in addition, a transparent plate glass test bench is arranged on the bottom plate and serves as a tested equipment placing platform, and a reflecting mirror is arranged below the plate glass test bench and used for reflecting laser.
Preferably, in order to ensure that the device can detect the plane projection condition of the whole measured object, the laser device installed on the middle sliding table vertically emits laser to the reflecting mirror of the bottom plate, the reflected laser signal is received by the laser receiving end after being reflected, the projection boundary of the measured object is judged by whether the laser light path is blocked, and the boundary coordinate position is read by measuring devices such as a ruler and the like, so that the required geometric information is obtained.
Preferably, in order to accurately measure the plane coordinate position of the projection detection device, a bidirectionally slidable platform composed of the longitudinal slide rail, the longitudinal slide table, the transverse slide rail, the middle slide table and the like is provided with a laser projection detection device, and the detection device can freely move in the detection plane and read the bidirectional coordinate through a scale and a pointer.
Preferably, in order to ensure that the laser reflected light reaching the mirror surface without being shielded in vertical emission can be received without false alarm, the mirror is composed of two reflecting mirror plates, a seam is arranged at the position of a longitudinal central axis of the bottom plate, the mirror surface is raised, so that the mirror surfaces on two sides are in an inverted V shape, the inclination angle of the mirror surfaces is determined by design calculation, and the laser can be reflected to one of the two receivers all the time under the condition that the vertical incident light is not shielded.
A detection method for handing over and installing a laser projection detection device comprises the following steps:
placing an object to be detected on a flat glass test bench, and crossing a longitudinal central axis, namely the position of a middle seam of a reflector;
turning on a power supply, and emitting a point-like laser beam vertical to the flat glass test board on the bottom plate by a laser emitting end;
moving the middle sliding table, wherein the laser incident point also moves on the glass plate, when the incident laser is shielded by the detected object, the LED indicator lamp is completely extinguished, and when the laser incident point moves out of the detected object from the left side, the incident laser irradiates the left side reflector and is reflected to the left laser receiving end, so that the left side LED indicator lamp is turned on, and the laser incident point moves out of the right side, and the right side LED is turned on similarly;
and fourthly, determining the projection boundary of the object from the on and off changes of the LED indicator lamp by moving the middle sliding table, recording the position of the longitudinal and transverse coordinates by checking the position of the pointer pointing to the scale, and repeating the process to obtain the projection geometric dimension data of the object to be measured.
The invention has the beneficial effects that: the laser projection detection device and the detection method for alternate installation are reasonable in design, simple to use, fast in reading, accurate in measurement, free of touching the detected object in the detection process, and capable of reducing disturbance. The detection method and the detection device solve the problems of non-perpendicularity of light, fuzzy boundary and inaccurate positioning in the traditional optical projection measurement. The device and the test method can also be extended to similar test detection.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of the section I-I of FIG. 1 and the detection principle of the present invention;
fig. 3 is a schematic circuit diagram of the present invention.
In the figure: 1. the device comprises a bottom plate, 2, a fixed support, 3, a cross beam, 4, a longitudinal slide rail, 5, a longitudinal slide table, 6, a transverse slide rail, 7, a middle slide table, 8, a longitudinal pointer, 9, a longitudinal scale, 10, a transverse pointer, 11, a transverse scale, 12, a left laser receiving end, 13, a right laser receiving end, 14, a laser emitting end, 15, an LED indicating lamp, 16, plate glass, 17 and a reflector.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, a cross installation and application laser projection detection device includes a bottom plate 1, a fixing support 2, a cross beam 3, a longitudinal slide rail 4, a longitudinal slide rail 5, a transverse slide rail 6, a middle slide rail 7, a longitudinal pointer 8, a longitudinal scale 9, a transverse pointer 10, a transverse scale 11, a left laser receiving end 12, a right laser receiving end 13, a laser emitting end 14, an LED indicator 15, a flat glass test board 16 and a reflector 17; the bottom plate 1 is provided with 4 fixed supports 2 which are connected by a cross beam 3, two longitudinal sliding rails 4 and longitudinal scales 9 are arranged on the cross beam 3, two longitudinal sliding tables 5 are arranged on the longitudinal sliding rails 4 and can freely slide along the longitudinal direction, the longitudinal sliding table 5 on one side is provided with a longitudinal pointer 8, the transverse sliding rails 6 and the transverse scales 11 are fixedly arranged on the longitudinal sliding tables 5, the middle sliding table 7 is arranged on the transverse sliding rails 7 and can freely slide along the transverse direction, the middle sliding table 7 is provided with a left laser receiving end 12, a right laser receiving end 13, a laser emitting end 14, an LED indicator lamp 15 and other equipment, and the electronic equipment is connected with an external direct current power supply; in addition, a transparent plate glass test bench 16 is arranged on the bottom plate 1 and used as a tested equipment placing platform, and a reflector 17 is arranged below the plate glass test bench 16 and used for reflecting laser.
The laser arranged on the middle sliding table 7 vertically emits laser to the reflecting mirror 17 of the bottom plate 1, the reflected signal is received by the laser receiving end after reflection, judging the projection boundary of the measured object by judging whether the laser light path is blocked or not, reading the boundary coordinate position by measuring devices such as a ruler and the like, thereby obtaining the needed geometric information, a bidirectional sliding platform composed of the longitudinal slide rail 4, the longitudinal sliding table 5, the transverse slide rail 6, the middle sliding table 7 and the like is provided with a laser projection detection device, the detection device can freely move in a detection plane and read bidirectional coordinates through a scale and a pointer, the reflector 17 is composed of two reflector plates, the seam is arranged on the longitudinal central axis of the bottom plate 1, and the mirror surface is raised, so that the two mirror surfaces are inverted V-shaped, the inclination angle of the mirror surfaces is determined by design calculation, and the laser can be reflected to one of the two receivers all the time under the condition that the vertical incident light is not shielded.
A detection method for handing over and installing a laser projection detection device comprises the following steps:
firstly, placing an object to be detected on a flat glass test bench 16, and crossing a longitudinal central axis, namely the position of a middle seam of a reflector 17;
turning on a power supply, and emitting a point-like laser beam vertical to a flat glass test bench 16 on the bottom plate 1 by a laser emitting end;
step three, moving the middle sliding table 7, wherein a laser incident point also moves on the glass plate, when the incident laser is shielded by the detected object, the LED indicating lamp 15 is completely extinguished, and when the laser incident point moves out of the detected object from the left side, the incident laser irradiates the left side reflector and is reflected to the left laser receiving end 12, so that the left side LED indicating lamp 15 is lightened, and the laser incident point moves out of the right side, similarly, the right side LED is lightened;
and step four, determining the projection boundary of the object from the on and off changes of the LED indicator lamp 15 by moving the middle sliding table 7, recording the position of the longitudinal and transverse coordinates by checking the position of the pointer pointing to the scale, and repeating the process to obtain the projection geometric dimension data of the object to be measured.
The working principle is as follows: when the laser projection detection device and the detection method are used, the laser comprises a laser emitting end, a left laser receiving end and a right laser receiving end, and two corresponding LED indicating lamps 15 are arranged. The power is converted into 12V power by an external power supply through a direct current adapter to supply power to the laser and the LED indicator lamp 15. When the power supply is turned on, the laser emits laser, and if the left laser receiving end 12 receives a reflected laser signal, the left LED indicator lamp 15 is turned on; if the right laser receiving end 13 receives the reflected laser signal, the right LED indicator lamp 13 is on; if none of the reflected laser light is received, none of the LED indicator lights 15 is on.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides an install and apply laser projection detection device which characterized in that: the device comprises a bottom plate (1), a fixing support (2), a cross beam (3), a longitudinal sliding rail (4), a longitudinal sliding table (5), a transverse sliding rail (6), a middle sliding table (7), a longitudinal pointer (8), a longitudinal scale (9), a transverse pointer (10), a transverse scale (11), a left laser receiving end (12), a right laser receiving end (13), a laser emitting end (14), an LED indicator light (15), a flat glass test bench (16) and a reflector (17); the bottom plate (1) is provided with 4 fixing supports (2) and connected by a cross beam (3), two longitudinal sliding rails (4) and longitudinal scales (9) are arranged on the cross beam (3), two longitudinal sliding tables (5) are arranged on the longitudinal sliding rails (4) and can freely slide along the longitudinal direction, the longitudinal sliding table (5) on one side is provided with a longitudinal pointer (8), the transverse sliding rail (6) and the transverse scales (11) are fixedly arranged on the longitudinal sliding tables (5), the middle sliding table (7) is arranged on the transverse sliding rail (7) and can freely slide along the transverse direction, the middle sliding table (7) is provided with a left laser receiving end (12), a right laser receiving end (13), a laser emitting end (14), an LED indicating lamp (15) and other equipment, and the electronic equipment is connected with an external direct current power supply; in addition, a transparent plate glass test bench (16) is arranged on the bottom plate (1) and serves as a tested equipment placing platform, and a reflector (17) is arranged below the plate glass test bench (16) and used for reflecting laser.
2. The laser projection detection device of claim 1, wherein: the laser device arranged on the middle sliding table (7) vertically emits laser to the reflecting mirror (17) of the bottom plate (1), the reflected laser is received by the laser receiving end after reflection, the projection boundary of the measured object is judged by judging whether the laser light path is blocked or not, and the boundary coordinate position is read by measuring devices such as a ruler and the like, so that the required geometric information is obtained.
3. The laser projection detection device of claim 1, wherein: but by install laser projection check out test set on the two-way gliding platform of constituteing such as vertical slide rail (4), vertical slip table (5), horizontal slide rail (6), well slip table (7), check out test set can freely remove and read two-way coordinate through scale, pointer in the detection plane.
4. The laser projection detection device of claim 1, wherein: the reflector (17) is composed of two reflector plates, the seam is arranged at the position of the longitudinal central axis of the bottom plate (1), the mirror surface at the position is heightened, so that the two mirror surfaces are inverted V-shaped, the inclination angle of the mirror surface is determined by design calculation, and laser can be reflected to one of the two receivers all the time under the condition that vertical incident light is not shielded.
5. A detection method for installing a laser projection detection device alternately is characterized by comprising the following steps:
firstly, placing an object to be detected on a flat glass test bench (16), and crossing a longitudinal central axis, namely the position of a middle seam of a reflector (17);
secondly, turning on a power supply, and emitting a point-like laser beam vertical to a plate glass test bench (16) on the bottom plate (1) by a laser emitting end;
moving the middle sliding table (7), wherein a laser incident point also moves on the glass plate, when incident laser is shielded by a detected object, the LED indicating lamp (15) is completely extinguished, and when the laser incident point moves out of the detected object from the left side, the incident laser irradiates a left side reflecting mirror and is reflected to the left laser receiving end (12), so that the left side LED indicating lamp (15) is lightened, and the laser incident point moves out of the right side, similarly, the right side LED is lightened;
and fourthly, determining the projection boundary of the object from the on and off changes of the LED indicating lamp (15) by moving the middle sliding table (7), recording the position of the longitudinal and transverse coordinates by checking the position of the pointer pointing to the scale, and repeating the process to obtain the projection geometric dimension data of the object to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449930.0A CN111521116A (en) | 2020-05-25 | 2020-05-25 | Laser projection detection device and detection method for alternate installation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010449930.0A CN111521116A (en) | 2020-05-25 | 2020-05-25 | Laser projection detection device and detection method for alternate installation |
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| CN111521116A true CN111521116A (en) | 2020-08-11 |
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| CN202010449930.0A Pending CN111521116A (en) | 2020-05-25 | 2020-05-25 | Laser projection detection device and detection method for alternate installation |
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Application publication date: 20200811 |
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| RJ01 | Rejection of invention patent application after publication |