CN102506749A - Adjustable photoelectric detection device - Google Patents

Abstract

The invention relates to the technical field of photoelectric detectors, in particular to an adjustable photoelectric detection device. The laser camera comprises a laser generator, a digital camera and an adjustable supporting device, wherein the supporting device comprises a bottom plate, a support plate, a first corner plate and a second corner plate, the support is perpendicular to the bottom plate, the support plate is arranged on the support and is connected with a rotating pin, the support plate is provided with a circular arc-shaped guide rail taking the rotating pin as a circle center, the first end of the first corner plate is sleeved on the rotating pin, the second end of the first corner plate is clamped with the guide rail, the first end of the second corner plate is sleeved on the rotating pin, the second end of the second corner plate is clamped with the guide rail, the digital camera is connected with the second end of the first corner plate, and the laser. The invention has reasonable structure, better adjustability and universality and simple and convenient operation.

Description

An adjustable photoelectric detection device

technical field

The invention relates to the technical field of photoelectric detectors, in particular to an adjustable photoelectric detection device.

Background technique

Laser triangulation measurement is one of the main measurement methods for non-contact measurement of three-dimensional curved surfaces. It does not touch the surface of the measured object and has high measurement accuracy, so it is widely used in the measurement of industrial products. For parts with three-dimensional curved surfaces produced by some molding processes, such as plastic parts and metal sheet metal parts, the dimensional accuracy inspection needs to be inspected by an optical measurement inspection system.

The current photoelectric detection system, such as the Chinese patent No. 200820206221.4, discloses an "optical detection system based on a laser combination module diagram", including a laser generator, an adjustable support seat, and a digital camera. The laser generator and the digital camera are installed on On the adjustable support seat, the laser pattern emitted by the laser generator is projected on the surface of the measured object, and the digital camera collects the image reflected by the laser pattern on the surface of the measured object, and transmits the measurement signal to the computer through the cable, and can be obtained after computer processing. The three-dimensional geometric information of the surface of the measured object. Wherein the adjustable support base includes a base, a vertical bar and a cross bar, and the laser generator and the digital video camera are all installed on the cross bar. Due to the limitations of the structure, there are many detection and adjustment steps, and the operation is inconvenient, and the adjustable range of the laser generator and the digital camera is small, resulting in a small measurement field of view, so its versatility is not strong.

Contents of the invention

The object of the present invention is to provide an adjustable photoelectric detection device for the deficiencies of the prior art, which has a reasonable structure, good adjustability and versatility, and simple and convenient operation.

In order to achieve the above object, the present invention is achieved through the following technical solutions.

An adjustable photoelectric detection device, including a laser generator, a digital camera and an adjustable support device, the support device includes a bottom plate, a bracket, a support plate, a first corner plate and a second corner plate, the bracket is arranged perpendicular to the bottom plate, the bracket A support plate is connected to the top, and the support plate is connected with a rotary pin. The support plate is provided with an arc-shaped guide rail with the rotary pin as the center. The first end of the first corner plate is sleeved on the rotary pin, and the second end is clamped with the guide rail. , the first end of the second corner plate is sleeved on the rotary pin, the second end is clamped with the guide rail, the digital camera is connected with the second end of the first corner plate, and the laser generator is connected with the second end of the second corner plate.

Wherein, the support plate is connected with the support through the support plate, the support plate can move up and down relative to the support plate, and the support plate can move up and down relative to the support.

Wherein, a first extension plate is connected between the digital camera and the second end of the first corner plate, and the first extension plate is provided with a first slide rail along a direction perpendicular to the support plate, and the digital camera is fixedly connected with the camera stand, and the camera stand It is slidingly connected with the first slide rail; a second extension plate is connected between the laser generator and the second end of the second corner plate, and the second extension plate is provided with a second slide rail along the direction perpendicular to the support plate, and the laser generator It is fixedly connected with the light source base, and the light source base is slidably connected with the second slide rail.

Wherein, a rotatable first corner seat is connected between the first extension plate and the first corner plate, and a rotatable second corner seat is connected between the second extension plate and the second corner plate.

Wherein, a first adjusting plate that can move along the length direction of the first corner plate is connected between the first corner seat and the first corner plate, and a first adjusting plate that can move along the length direction of the second corner plate is connected between the second corner seat and the second corner plate. The second adjustment plate that moves in the length direction.

Wherein, the bottom plate is provided with a driving platform, and the driving platform includes a workpiece mounting seat, a longitudinal moving plate and a lateral moving plate arranged in sequence from top to bottom.

Wherein, the bottom plate is provided with a plurality of mounting holes for the drive table to be installed, and the drive table can select different installation positions according to different mounting holes.

Wherein, a first fastening screw is provided at the joint between the first corner plate and the guide rail, and a second fastening screw is provided at the joint between the second corner plate and the guide rail.

Wherein, the guide rails are symmetrically arranged on the upper part of the supporting plate, and the arc range of the guide rails is π/4-π.

Wherein, the front end of the rotary pin is provided with a stopper.

The beneficial effect of the present invention is: an adjustable photoelectric detection device, including a laser generator, a digital camera and an adjustable support device, the support device includes a bottom plate, a bracket, a support plate, a first corner plate and a second corner plate, The bracket is arranged perpendicular to the bottom plate, the bracket is connected with a support plate, the support plate is connected with a rotary pin, the support plate is provided with an arc-shaped guide rail with the rotary pin as the center, and the first end of the first corner plate is sleeved on the rotary pin. The second end is clamped with the guide rail, the first end of the second corner plate is sleeved on the rotary pin, the second end is clamped with the guide rail, the digital camera is connected with the second end of the first corner plate, and the laser generator is connected with the second corner The second end of the board is connected. During detection, the workpiece to be measured is placed on the bottom plate, and the detection unit is composed of a laser generator and a digital camera. According to the detection requirements, the laser generator and digital camera need to be adjusted to an appropriate position, and the position of the detection unit in this state is obtained. calibration data. The laser pattern emitted by the laser generator, the laser pattern includes lines, line arrays, dots, lattices, rings or ring array shapes, the laser pattern is projected on the surface of the workpiece to be measured, and the digital camera collects the reflected image of the laser pattern from the surface of the workpiece , and the collected image information is transmitted to the computer system through the cable, and combined with the calibration data of the detection unit position, the three-dimensional geometric information of the workpiece surface is obtained through image processing and spatial triangulation. Since the digital camera is connected to the second end of the first corner plate, and the laser generator is connected to the second end of the second corner plate, the first end of the first corner plate and the first end of the second corner plate are respectively sleeved on the rotary The pin, the first corner plate and the second corner plate can respectively rotate around the rotary pin, so when the adjustable photoelectric detection device is used to adjust the position of the laser generator and the digital camera, turning the second corner plate can adjust the laser generation The position of the camera can be used to obtain a suitable projection angle of the laser pattern, and the position of the digital camera can be adjusted by turning the first corner plate to obtain a better angle for collecting reflected images. In order to fix the positions of the adjusted laser generator and the digital camera, the support plate is provided with an arc-shaped guide rail with the rotary pin as the center of the circle, and the second end of the first corner plate and the second end of the second corner plate are respectively connected to the When the laser generator is adjusted to a suitable position, the second end of the second corner board is clamped with the guide rail. Similarly, when the digital camera is adjusted to a suitable position, the first end of the first corner board is connected to the The rails snap tight. To sum up, the adjustable photoelectric detection device has a reasonable structure, good adjustability and versatility, and simple and convenient operation.

The support plate is connected with the bracket through the support plate, so that the height of the support plate can be adjusted along the direction perpendicular to the bottom plate.

The first extension plate is provided with a first slide rail, which can adjust the distance between the digital camera and the support plate; the second extension plate is provided with a second slide rail, which can adjust the distance between the laser generator and the support plate.

The first corner seat can make the digital video camera rotate in the plane parallel to the support plate, and the second corner seat can make the laser generator rotate in the plane parallel to the support plate.

The first adjusting plate can adjust the position of the digital camera in the length direction of the first corner plate, and the second adjusting plate can adjust the position of the laser generator in the length direction of the second corner plate.

The above-mentioned support plate, first extension plate, second extension plate, first corner seat, second corner seat, first adjustment plate and second adjustment plate are used as adjustment components to further enhance the adjustable function of the adjustable photoelectric detection device. And universality, by adjusting the spatial position of the digital camera and the laser generator, a larger measurement field of view with better detection effect can be obtained.

There is a driving table on the bottom plate, the workpiece to be measured is installed on the workpiece mounting seat, and the horizontal displacement of the horizontal moving plate is driven, and the vertical displacement of the longitudinal moving plate is driven, which can change the position of the measured workpiece relative to the bottom plate, thereby changing the detection position of the measured workpiece. Therefore, the measurement information of other parts of the workpiece to be measured can be obtained conveniently.

Description of drawings

The present invention will be further described below using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Fig. 2 is a schematic perspective view of the three-dimensional structure of the present invention.

Fig. 3 is a schematic diagram of a partial exploded structure of the present invention.

In Figures 1 to 3 include:

10—bottom plate, 11—bracket, 12—support plate, 13—support plate, 14—light source seat, 15—laser generator, 16—second extension plate, 17—second slide rail , 18—the second corner seat, 19—the second adjustment plate, 20—the guide rail, 21—the second corner plate, 22—the first adjustment plate, 23—the first corner seat, 24—the first An extension plate, 25—the first slide rail, 26—camera seat, 27—digital video camera, 28—the first corner plate, 29—mobile phone cover, 30—workpiece mounting seat, 31—longitudinal Moving plate, 32—transversely moving plate, 33—drive table, 34—revolving pin, 35—second fastening screw, 36—first fastening screw, 37—first chute, 38— —the first screw hole, 39—the first screw, 40—the second chute, 41—the second screw hole, 42—the second screw.

Detailed ways

The present invention will be further described below in conjunction with embodiment.

As shown in Figures 1 and 2, an adjustable photoelectric detection device includes a laser generator 15, a digital camera 27 and an adjustable support device. The support device includes a base plate 10, a bracket 11, a support plate 13, a first corner Plate 28 and the second corner plate 21, bracket 11 is arranged vertically to base plate 10, is connected with support plate 13 on support plate 13, and support plate 13 is connected with rotary pin 34, and support plate 13 is provided with the circular arc shape with rotary pin 34 as the center of circle. The guide rail 20, the first end of the first corner plate 28 is sleeved on the rotary pin 34, the second end is engaged with the guide rail 20, the first end of the second corner plate 21 is sleeved on the rotary pin 34, the second end is connected to the guide rail 20, the digital camera 27 is connected to the second end of the first corner board 28, and the laser generator 15 is connected to the second end of the second corner board 21.

Because the digital camera 27 is connected with the second end of the first corner plate 28, the laser generator 15 is connected with the second end of the second corner plate 21, the first end of the first corner plate 28, the first end of the second corner plate 21 The ends are sleeved on the rotary pins 34 respectively, and the first corner plate 28 and the second corner plate 21 can rotate around the rotary pins 34 respectively, so the position of the laser generator 15 and the digital camera 27 can be checked by using this adjustable photoelectric detection device. During adjustment, turning the second corner plate 21 can adjust the position of the laser generator 15, so that it can obtain a suitable laser pattern projection angle, and turning the first corner plate 28 can adjust the position of the digital camera 27, so that it can obtain better acquisition reflection The angle of the image. In order to fix the positions of the adjusted laser generator 15 and the digital video camera 27, the support disc 13 is provided with the arc-shaped guide rail 20 with the rotary pin 34 as the center of circle, the second end of the first corner plate 28, the second corner plate The second end of 21 is clamped with the guide rail 20 respectively, when the laser generator 15 is adjusted to a suitable position, the second end of the second corner plate 21 is clamped with the guide rail 20, similarly when the digital camera 27 is adjusted to a suitable position , clamp the first end of the first corner plate 28 to the guide rail 20 . To sum up, the adjustable photoelectric detection device has a reasonable structure, good adjustability and versatility, and simple and convenient operation.

The mobile phone cover 29 is an injection molded part, and the accuracy of its molding surface is high. When testing, this embodiment takes the detection of the surface shape accuracy of the mobile phone cover 29 as an example for illustration. According to the shape characteristics of the mobile phone cover 29, select a suitable positioning support point, and place the mobile phone cover 29 stably on the workpiece mounting seat 30 of the base plate 10. The detection unit is composed of a laser generator 15 and a digital camera 27. According to the detection requirements , it is necessary to adjust the laser generator 15 and the digital camera 27 to an appropriate position, and obtain the calibration data of the position of the detection unit in this state. The laser patterns emitted by the laser generator 15, the laser patterns include lines, line arrays, dots, lattices, rings or ring array shapes. Projected on the surface of the mobile phone cover 29 to form a projection shape, the digital camera 27 collects the image reflected by the line laser from the surface of the mobile phone cover 29, and transmits the image information to the computer system through the cable, combined with the calibration data of the position of the detection unit , through image processing and spatial triangulation calculation, obtain the three-dimensional geometric information of one cross-section surface of the mobile phone face shell 29 at the moment, move the mobile phone face shell 29, obtain the three-dimensional geometric information of the other cross-sectional surface of the mobile phone face shell 29, and convert several cross-sectional surfaces by computer The three-dimensional geometric information can be combined to obtain the three-dimensional geometric information of the entire surface of the mobile phone cover 29, and the three-dimensional geometric information is compared with the CAD model to obtain the precision data of the surface shape of the mobile phone cover 29.

As preferably, as shown in Figure 3, support plate 13 is connected with support 11 by support plate 12, and support plate 13 can move up and down relative to support plate 12, and support plate 12 can move up and down relative to support 11, can make support plate 13 The height is adjusted in a direction perpendicular to the base plate 10 . The bracket 11 is provided with a first sliding groove 37 , the lower part of the supporting plate 12 is provided with a first screw hole 38 , the upper part of the supporting plate 12 is provided with a second sliding groove 40 , and the lower part of the supporting plate 13 is provided with a second screw hole 41 . The first screw hole 38 is screwed with a first screw 39, and the first screw 39 is clamped in the first chute 37, and the first screw 39 can move up and down along the first chute 37, so that the support plate 12 can be moved relative to the bracket. 11 moves up and down, when the support plate 12 is adjusted to a suitable position, tighten the first screw 39 to make the support plate 12 and the support 11 fixedly connected; in the same way, the second screw hole 41 is screwed with the second screw 42, and the second screw 42 is clamped in the second chute 40, the second screw 42 can move up and down along the second chute 40, so that the support plate 13 can move up and down relative to the support plate 12, when the support plate 13 is adjusted to a proper position, the screw Tightening the second screw 42 can make the support plate 13 and the support plate 12 fixedly connected.

Further, a first extension plate 24 is connected between the digital camera 27 and the second end of the first corner plate 28, and the first extension plate 24 is provided with a first slide rail 25 along a direction perpendicular to the support plate 13, and the digital camera 27 It is fixedly connected with the camera base 26, and the camera base 26 is slidably connected with the first slide rail 25; a second extension plate 16 is connected between the laser generator 15 and the second end of the second corner plate 21, and the second extension plate 16 is vertically A second sliding rail 17 is provided in the direction of the support plate 13 , the laser generator 15 is fixedly connected to the light source seat 14 , and the light source seat 14 is slidingly connected to the second sliding rail 17 . The first extension plate 24 is provided with a first slide rail 25, which can adjust the distance between the digital camera 27 and the support plate 13; the second extension plate 16 is provided with a second slide rail 17, which can adjust the laser generator 15 and the support plate 13 the distance between.

Furthermore, a rotatable first corner seat 23 is connected between the first extension plate 24 and the first corner plate 28, and a rotatable second corner seat is connected between the second extension plate 16 and the second corner plate 21. 18. The first corner seat 23 can make the digital camera 27 rotate in a plane parallel to the support plate 13 , and the second corner seat 18 can make the laser generator 15 rotate in a plane parallel to the support plate 13 .

Furthermore, a first adjusting plate 22 that can move along the length direction of the first corner plate 28 is connected between the first corner seat 23 and the first corner plate 28 , and between the second corner seat 18 and the second corner plate 21 A second adjusting plate 19 movable along the length direction of the second corner plate 21 is connected. The first adjustment board 22 can adjust the position of the digital camera 27 in the length direction of the first corner board 28 , and the second adjustment board 19 can adjust the position of the laser generator 15 in the length direction of the second corner board 21 .

The support plate 12, the first extension plate 24, the second extension plate 16, the first corner seat 23, the second corner seat 18, the first adjustment plate 22 and the second adjustment plate 19 further strengthen the adjustable Due to the adjustability and versatility of the photoelectric detection device, by adjusting the spatial positions of the digital camera 27 and the laser generator 15, a larger measurement field of view with better detection effect can be obtained.

Preferably, the bottom plate 10 is provided with a driving table 33, and the driving table 33 includes a workpiece mounting seat 30, a longitudinal moving plate 31 and a lateral moving plate 32 arranged in sequence from top to bottom. The mobile phone cover 29 is installed on the workpiece mounting seat 30, drives the lateral displacement of the lateral movement plate 32, drives the longitudinal displacement of the longitudinal movement plate 31, can change the position of the mobile phone cover 29 relative to the base plate 10, thereby changing the detection position of the mobile phone cover 29, Therefore, the measurement information of other parts of the mobile phone cover 29 can be obtained conveniently. It should be noted that if the longitudinal length of the workpiece to be measured exceeds the length range of the linear laser, the longitudinal moving plate 31 can be driven to move longitudinally by a distance of the linear laser, and then the measurement of this area can be performed. By controlling the different positions of the workpiece under test on the drive table 33, the three-dimensional geometric information of different parts of the workpiece under test can be measured, and then the three-dimensional geometric information of multiple parts can be assembled into the overall three-dimensional geometric information through the computer.

Further, the bottom plate 10 is provided with a plurality of installation holes for the drive table 33 to be installed, and the drive table 33 can select different installation positions according to different installation holes, and is applicable to different shapes of workpieces to be tested, and has a wider application range.

Preferably, a first fastening screw 36 is provided at the joint between the first corner plate 28 and the guide rail 20 , and a second fastening screw 35 is provided at the joint between the second corner plate 21 and the guide rail 20 . When the laser generator 15 is adjusted to a suitable position, tighten the second fastening screw 35 to clamp the second end of the second corner plate 21 with the guide rail 20. Similarly, when the digital camera 27 is adjusted to a suitable position, tighten the first The fastening screw 36 fastens the first end of the first corner plate 28 to the guide rail 20, and the operation is simple and convenient.

Preferably, the guide rail 20 is symmetrically arranged on the upper part of the support plate 13, and the arc range of the guide rail 20 is π/4-π, and the arc value of the guide rail 20 promptly limits the gap between the first corner plate 28 and the second corner plate 21. maximum angle of .

As preferably, the front end of the rotary pin 34 is provided with a stopper, which can prevent the first corner plate 28 and the second corner plate 21 from falling off from the rotary pin 34, and play a role in the rotation of the first corner plate 28 and the second corner plate 21 at the same time. Limiting effect.

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limits.

Claims (10)

1. an adjustable photoelectric detection system comprises laser generator, DV and adjustable bracing or strutting arrangement, it is characterized in that: bracing or strutting arrangement comprises base plate, support, supporting disk, first rotary corner plate and second rotary corner plate; Support is perpendicular to the base plate setting; Be connected with supporting disk on the support, supporting disk is connected with the revolution pin, and it is the guide rail of the circular arc in the center of circle that supporting disk is provided with the revolution pin; First end of first rotary corner plate is sheathed on the revolution pin; Second end and guide rail clamping, first end of second rotary corner plate are sheathed on revolution pin, second end and guide rail clamping; DV is connected with second end of first rotary corner plate, and laser generator is connected with second end of second rotary corner plate.

2. a kind of adjustable photoelectric detection system according to claim 1 is characterized in that: supporting disk is connected with support through back up pad, and supporting disk can move up and down with respect to back up pad, and back up pad can move up and down with respect to support.

3. a kind of adjustable photoelectric detection system according to claim 1 and 2; It is characterized in that: be connected with first extension board between second end of the DV and first rotary corner plate; First extension board is provided with first slide rail along the direction perpendicular to supporting disk; DV and support fixed connection mutually, the phase support and first slide rail are slidingly connected; Be connected with second extension board between second end of the laser generator and second rotary corner plate, second extension board is provided with second slide rail along the direction perpendicular to supporting disk, and laser generator is fixedly connected with light source base, and the light source base and second slide rail are slidingly connected.

4. a kind of adjustable photoelectric detection system according to claim 3; It is characterized in that: be connected with the rotating first corner seat between first extension board and first rotary corner plate, be connected with the rotating second corner seat between second extension board and second rotary corner plate.

5. a kind of adjustable photoelectric detection system according to claim 4; It is characterized in that: be connected with first adjustable plate that can move between the first corner seat and first rotary corner plate, be connected with second adjustable plate that can move between the second corner seat and second rotary corner plate along the length direction of second rotary corner plate along the length direction of first rotary corner plate.

6. a kind of adjustable photoelectric detection system according to claim 1, it is characterized in that: said base plate is provided with the driving platform, drives platform and comprises the workpiece mount pad that sets gradually from top to bottom, vertically moves plate and lateral movement plate.

7. a kind of adjustable photoelectric detection system according to claim 6 is characterized in that: said base plate is provided with a plurality of mounting holes that platform is installed that supply to drive, and drives platform and can select different installation sites according to different mounting holes.

8. a kind of adjustable photoelectric detection system according to claim 1 is characterized in that: first rotary corner plate and guide rail access section are provided with first trip bolt, and second rotary corner plate and guide rail access section are provided with second trip bolt.

9. a kind of adjustable photoelectric detection system according to claim 1, it is characterized in that: the guide rail left and right symmetrically is arranged at the top of supporting disk, and the radian scope of guide rail is π/4-π.

10. a kind of adjustable photoelectric detection system according to claim 1 is characterized in that: the front end of said revolution pin is provided with block.

Images