Calibrating device of binocular vision volume measuring device

Abstract

The invention discloses a calibration device of a binocular vision volume measurement device. The calibration device comprises a support frame, a target assembly and a vision assembly which are arranged above the support frame, and a refrigeration assembly, a heating assembly and a conveying pipe group which are positioned below the support frame, each visual assembly comprises a state-adjustable bracket and an industrial camera detachably mounted on the bracket, the bracket adjusts the position and the inclination angle of the industrial camera, and the target assembly is adjustably mounted between the two visual assemblies; the conveying pipe set is located above the refrigerating assembly, the heating assembly is installed at the end of the refrigerating assembly, and the heating assembly and the refrigerating assembly are connected with the conveying pipe set through respective valve bodies. The target assembly is arranged in the middle of the upper portion of the supporting frame, the visual assemblies are arranged at the two ends of the upper portion of the supporting frame, meanwhile, the relative positions and inclination angles of the visual assemblies and the target assembly can be adjusted, the visual devices can be calibrated in different states according to needs, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of visual measurement equipment, in particular to a calibration device for a binocular vision volume measurement device. BACKGROUND

[0002] With the rapid progress of science and technology, machine vision technology has made remarkable rapid development. The volume measurement system based on binocular vision, as an important branch of machine vision field, has shown broad application prospects in many fields due to its unique advantages. The system has the characteristics of non-contact measurement, which avoids the damage to the measured object caused by traditional contact measurement; the measurement speed is fast, which can meet the needs of efficient production and real-time detection; and three-dimensional information can be obtained, which provides more comprehensive and accurate data support for volume measurement of objects.

[0003] However, in the actual application process, the binocular vision volume measurement device faces many challenges. The camera itself has manufacturing errors, which are caused by the limitations of production process and technical level; installation errors are also inevitable during the installation process, such as the deviation of the relative position, angle and other installation parameters of the camera.

[0004] In addition, the influence of environmental factors cannot be ignored, such as the changes of temperature, humidity, the strength and distribution of light, etc., which will affect the imaging effect and measurement accuracy of the camera; for example, when the measurement environment is in complex working conditions such as high or low temperature and humidity, strong glare, and insufficient light, the imaging effect of the camera will be seriously affected due to the lack of effective calibration before measurement. For example, the sharp change of temperature and humidity may cause the camera lens to deform or fog, the glare may cause the image to overexpose or increase the noise points, and the insufficient light will cause the image to be blurred and the contrast to be reduced, which will further cause the accuracy of measurement to decrease greatly.

[0005] In order to improve the accuracy and precision of measurement, it is necessary to calibrate the binocular vision volume measurement device after production. Calibration can correct various errors of the camera, so that the system can more accurately obtain the three-dimensional information of the object, thereby improving the precision of volume measurement SUMMARY

[0006] The purpose of the present application is to provide a calibration device for a binocular vision volume measurement device, which aims to improve the problem of calibration for recognition measurement devices used for volume measurement and the like.

[0007] The application is implemented as follows: a calibration device of a binocular vision volume measuring device, comprising a support frame, a target assembly and a vision assembly arranged above the support frame, and a refrigeration assembly, a heating assembly and a conveying pipe group arranged below the support frame; the vision assembly comprises a state-adjustable support and an industrial camera detachably mounted on the support, the support adjusts the position and the tilt angle of the industrial camera, and the target assembly is adjustably mounted between the two sets of vision assemblies; the conveying pipe group is arranged above the refrigeration assembly, the heating assembly is mounted at the end of the refrigeration assembly, and the heating assembly and the refrigeration assembly are connected with the conveying pipe group through respective valve bodies, and meanwhile the output end of the conveying pipe group is arranged upward.

[0008] Preferably, the support frame comprises a plurality of splicing pipes and a plurality of splicing blocks, two adjacent splicing pipes are connected end to end through the splicing blocks to form an eye frame, a plurality of supporting legs are arranged below the eye frame, the top connecting plates of the supporting legs are connected through bolts and are sleeved on the splicing pipes, and two supporting plates are arranged in parallel in the middle region of the eye frame.

[0009] Preferably, a supporting shaft is arranged through the middle and lower part of the support frame through a bearing, and a side plate is fixedly arranged at the bottom of the support frame; the two ends of the supporting shaft are connected through vertical plates and are slidingly mounted on the eye frame, a telescopic cylinder is arranged between the side plate and the supporting shaft and is hingedly arranged in an inclined manner, the telescopic cylinder adjusts the tilt angle of the support frame, and the supporting shaft moves to adjust the position of the support frame.

[0010] Preferably, a sliding block is fixedly arranged at the bottom of the vertical plate and is sleeved on the guide rail at the end of the eye frame, a threaded sleeve is arranged below the supporting shaft through a second clamping plate, the threaded sleeve is sleeved on a lead screw, the end of the lead screw is connected with the power output shaft of a motor, and the motor is mounted on the eye frame through a fixing plate.

[0011] Preferably, a plurality of clamping grooves are arranged at the end of the supporting shaft in the circumferential direction of the supporting shaft, a plum blossom plate is sleeved on the end of the supporting shaft, and clamping columns located in the hole channels of the plum blossom plate are mounted in the clamping grooves; the plum blossom plate is mounted on the vertical plate through bolts, and the end of the supporting shaft is in contact with the vertical plate.

[0012] Preferably, the target assembly comprises a hollow rotating platform detachably mounted on the supporting plate, a tray connected with the rotating part of the hollow rotating platform, and a target object placed on the tray; a threaded stud fixedly arranged at the middle of the top of the tray is arranged through the through hole of the target object, and a nut is sleeved on the part of the threaded stud protruding from the target object.

[0013] Preferably, the refrigeration assembly comprises a liquid tank and a frame arranged in an up-down distribution, semiconductor refrigerating sheets and heat dissipation sheets are arranged in an up-down distribution on the inner side of the frame, a plurality of semiconductor refrigerating sheets are arranged in close contact with the bottom of the liquid tank, the plurality of semiconductor refrigerating sheets are all laid on the heat dissipation sheets, and second fans mounted on the frame are arranged at the two ends of the heat dissipation sheets.

[0014] Preferably, the conveying pipe group comprises a dispersion pipe, a cover plate and a cooling pipe distributed upwards and downwards; a first electric three-way valve and a second electric three-way valve are arranged above the cover plate; the inlet end of the first electric three-way valve is connected with an air pump arranged above the cover plate, and the two outlet ends of the first electric three-way valve are respectively connected with a first air inlet pipe and a second air inlet pipe arranged through the cover plate, and the bottom of the first air inlet pipe is immersed in the cooling liquid in the liquid tank; the outlet end of the second electric three-way valve is connected with the dispersion pipe, and the two inlet ends of the second electric three-way valve are respectively connected with a gas collecting cover and an output pipe arranged through the cover plate; the output pipe and the second air inlet pipe are arranged in the two ends of the cooling pipe, and the cooling pipe is bent and arranged in the cooling liquid in the liquid tank.

[0015] Preferably, the dispersion pipe comprises a pipe body and a plurality of gas supply heads, the plurality of gas supply heads are evenly and communicatively arranged above the pipe body, and the gas inlet end of the pipe body is connected with the outlet end of the second electric three-way valve; the dispersion pipe further comprises a plurality of support rods detachably arranged on the cover plate, a cross-shaped buckle groove is arranged at the top of the support rod, and the cross-shaped intersection part of the pipe body is buckled in the buckle groove.

[0016] Preferably, the heating assembly comprises a shell, a heating rod arranged in the inner side of the shell and a first fan arranged on the outer side of the shell; the top surface of the shell is arranged as an opening, the bottom is provided with an output hole, and a conical structure air inlet shell is arranged on the top of the shell; the first fan is arranged on the larger size end of the air inlet shell and drives the gas to flow into the shell; the top of the heating rod is detachably arranged on the top of the shell, and a plurality of heat conduction sheets are arranged above and below the heating area of the heating rod; the heating gas is output from the bottom of the shell, flows along the communication pipe to the electromagnetic valve and then flows into the gas inlet end of the pipe body.

[0017] Compared with the prior art, the present application has the following advantages: 1. The target assembly is arranged at the middle part above the support frame, and the visual assembly is arranged at the two ends above the support frame, and the relative position and the inclination angle of the visual assembly and the target assembly can be adjusted, so that the visual device can be calibrated in different states according to the requirements, and the practicability of the device is improved.

[0018] 2. The light source arranged in the annular structure is composed of a plurality of LED lamp groups, which provides uniform illumination for the image taken by the industrial camera, and different intensity of illumination can be provided for the visual device calibration by adjusting the brightness of the light source.

[0019] 3. The refrigeration assembly and the heating assembly are arranged, and the refrigeration assembly and the heating assembly are connected with the conveying pipe group, so that the temperature and humidity of the space where the industrial camera is arranged can be adjusted when the refrigeration assembly and the heating assembly work alone or cooperatively, the clarity of the image of the measured object taken by the industrial camera can be improved, and the measurement accuracy and precision can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the first structural schematic diagram of the whole application; Figure 2 is the second structural schematic diagram of the whole application; Figure 3 is the structural schematic diagram of the support frame, target assembly and visual assembly of the application; Figure 4 is the structural schematic diagram of the support frame of the application; Figure 5 is the structural schematic diagram of the visual assembly of the application; Figure 6 is the structural schematic diagram of the support shaft and vertical plate of the application; Figure 7 is the structural schematic diagram of the support shaft of the application; Figure 8 is the structural schematic diagram of the industrial camera, light source and support of the application; Figure 9 is the structural schematic diagram of the target assembly of the application; Figure 10 is the structural schematic diagram of the conveying pipe group, heating assembly and refrigeration assembly of the application; Figure 11 is the structural schematic diagram of the refrigeration assembly of the application; Figure 12 is the structural schematic diagram of the conveying pipe group and heating assembly of the application; Figure 13 is the structural schematic diagram of the cover plate of the application; Figure 14 is the structural schematic diagram of the dispersion pipe of the application; Figure 15 is the structural schematic diagram of the heating assembly of the application.

[0021] In the figure: 1, support frame; 11, leg; 12, connecting plate; 13, support plate; 14, splicing pipe; 15, guide rail; 16, splicing block; 17, fixing plate; 2, target assembly; 21, hollow rotating platform; 22, tray; 23, target object; 24, through hole; 3, visual assembly; 31, industrial camera; 32, lens; 33, light source; 34, support; 341, bearing; 342, side plate; 35, lead screw; 36, motor; 37, telescopic cylinder; 38, support shaft; 381, first clamping plate; 382, threaded sleeve; 383, second clamping plate; 384, clamping groove; 385, hexagonal plate; 386, clamping column; 39, vertical plate; 391, sliding block; 4, conveying pipe group; 41, cooling pipe; 42, cover plate; 421, first electric three-way valve; 422, second electric three-way valve; 423, gas collecting cover; 424, output pipe; 425, first air inlet pipe; 426, second air inlet pipe; 43, air pump; 44, dispersion pipe; 441, pipe body; 442, gas conveying head; 443, support rod; 444, buckle groove; 5, heating assembly; 51, communication pipe; 52, heat conduction sheet; 53, heating rod; 54, air inlet shell; 55, first fan; 56, clamp; 57, shell; 6, refrigeration assembly; 61, liquid tank; 62, semiconductor refrigeration sheet; 63, frame; 64, heat dissipation fin; 65, second fan; 66, liquid pipe. DETAILED DESCRIPTION

[0022] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0023] The following will be further described in combination with the drawings and specific embodiments: In order to realize the calibration of the visual equipment, the present embodiment provides a calibration device. Using the device can simultaneously calibrate two sets of visual devices, thereby realizing the calibration of the binocular vision volumetric measurement device.

[0024] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 10 , specifically, the calibration device comprises a support frame 1, a target assembly 2, a visual assembly 3, a conveying pipe group 4, a heating assembly 5, a refrigeration assembly 6 and the like.

[0025] As shown in Figure 1 , Figure 2 ,Figure 3 、 Figure 10 As shown in FIG. 1, the target assembly 2 and the visual assembly 3 are arranged above the support frame 1, and the target assembly 2 is located between the two sets of visual assemblies 3. The states of the target assembly 2 and the visual assembly 3 can be adjusted, so that the angle and position of the visual assembly 3 and the orientation of the target assembly 2 can be adjusted according to the calibration requirements, and the gradual fine-tuning mode is realized to realize the image acquisition under different relationships between the measured object and the visual assembly 3, and then the calibration processing is completed.

[0026] As shown in FIG. 1, Figure 1 、 Figure 2 、 Figure 3 、 Figure 10 As shown in FIG. 1, the conveying pipe group 4, the heating assembly 5 and the refrigeration assembly 6 are arranged below the support frame 1. The conveying pipe group 4 is located above the refrigeration assembly 6, and the heating assembly 5 is installed at the end of the refrigeration assembly 6. The heating assembly 5 and the refrigeration assembly 6 are connected with the conveying pipe group 4 through respective valve bodies, and the output end of the conveying pipe group 4 is arranged upward. The temperature and humidity of the environment where the visual assembly 3 is located can be adjusted under the action of the heating assembly 5 and the refrigeration assembly 6, and then the visual device under different temperature and humidity conditions can be calibrated. In order to more accurately adjust the temperature and humidity of the environment where the visual assembly 3 is located, a temperature and humidity sensor needs to be installed on the support frame 1 to collect the temperature and humidity data of the environment, and transmit the data to the controller. The controller controls the working of the device according to the set threshold value and the collected data to adjust the temperature and humidity of the environment. The above-mentioned controller can be an industrial computer for controlling the working of the device and analyzing and processing the collected images. Therefore, the industrial computer is equipped with corresponding control software and image analysis software to realize the automatic control of the entire calibration process and image analysis.

[0027] As shown in FIG. 1, Figure 4 In order to stably support the target assembly 2, the visual assembly 3, the conveying pipe group 4, the heating assembly 5 and the refrigeration assembly 6, the support frame 1 includes a plurality of splicing pipes 14 and a plurality of splicing blocks 16. The splicing block 16 is arranged in a right angle structure, and can also be arranged in a triangular structure perpendicular to each other. Therefore, the two adjacent splicing pipes 14 can be connected end to end under the action of the splicing block 16, and then the eye frame is formed under the action of the plurality of splicing pipes 14 and the splicing block 16. A plurality of legs 11 are arranged below the eye frame, and a connecting plate 12 is fixedly arranged at the top of the leg 11. The connecting plate 12 is arranged in a shape of a Chinese character "fang" with the opening facing upward, and is connected to the splicing pipe 14 through bolts, so that the eye frame is stably located at a certain height under the support of the leg 11. Two support plates 13 are arranged in parallel in the middle region of the eye frame. The target assembly 2 is placed on the two support plates 13, and the two sets of visual assemblies 3 are distributed in the other two regions of the eye frame. The conveying pipe group 4, the heating assembly 5 and the refrigeration assembly 6 are arranged below the eye frame and between the plurality of legs 11.

[0028] As shown in Figure 5 order to calibrate different vision devices, the vision assembly 3 comprises a support 34 and an industrial camera 31 detachably mounted on the support 34, and a lens 32 can also be mounted at the end of the industrial camera 31, the support 34 is slidingly mounted on the support frame 1, and the state of the support 34 can be adjusted, so that the support 34 adjusts the position and inclination angle of the industrial camera 31. In addition, a light source 33 in the form of a ring is also mounted on the support 34 directly below the industrial camera 31, the light source 33 is composed of a lamp group of multiple LED lamps, providing uniform illumination, and the brightness can be controlled by a controller, providing different intensities of illumination for vision device calibration.

[0029] As shown in Figure 5 , Figure 8 in order to adjust the inclination angle of the support 34 and achieve adjustment of the angles of the industrial camera 31 and the light source 33, a support shaft 38 is connected through a bearing 341 at the middle and lower part of the support 34, both ends of the support shaft 38 are connected and mounted on the character frame through a vertical plate 39. A side plate 342 is fixedly provided at the bottom of the support 34, and a telescopic cylinder 37 is obliquely and hingedly provided between the side plate 342 and the support shaft 38, one end of the telescopic cylinder 37 is hingedly connected with a first clamping plate 381 sleeved on the support shaft 38. The telescopic cylinder 37 adjusts the inclination angle of the support 34, so that in the case of stable installation of the support 34, the inclination angle of the support 34 can be adjusted by the telescopic cylinder 37. The telescopic cylinder 37 described above can be an electric cylinder.

[0030] As shown in Figure 4 , Figure 6 in order to change the positions of the industrial camera 31 and the light source 33, a sliding block 391 is fixedly provided at the bottom of the vertical plate 39, and a guide rail 15 is mounted on the character frame along the length direction of the character frame, and the sliding block 391 is sleeved on the guide rail 15 at the end of the character frame, the sliding block 391 and the guide rail 15 form a device similar to a linear guide rail, so that the support 34 is stably and movably mounted on the character frame.

[0031] As shown in Figure 5 , Figure 6 below the support shaft 38 is connected and provided with a threaded sleeve 382 through a second clamping plate 383, the threaded sleeve 382 is sleeved on a lead screw 35, one end of the lead screw 35 is connected with a power output shaft of a motor 36, and the motor 36 is mounted on the character frame through a fixed plate 17, in the case that the motor 36 drives the lead screw 35 to rotate forward and reverse, the support shaft 38 can be controlled to move along the length direction of the character frame, providing support for adjusting the position of the industrial camera 31 relative to the target assembly 2.

[0032] As shown in Figure 7As shown, in order to facilitate the stable installation of the support shaft 38 between the vertical plates 39, a plurality of clamping grooves 384 are arranged on the end of the support shaft 38 along the circumferential direction thereof, and a plum blossom plate 385 is sleeved on the end of the support shaft 38, the clamping column 386 located in the hole of the plum blossom plate 385 is installed in the clamping groove 384, so that the plum blossom plate 385 and the support shaft 38 remain relatively stationary. In addition, the plum blossom plate 385 is connected and installed on the vertical plate 39 by bolts, and the end of the support shaft 38 is in contact with the vertical plate 39, that is, the connection of the support shaft 38 and the vertical plate 39 is realized under the action of the plum blossom plate 385.

[0033] As shown in Figure 9 , the target assembly 2 includes a hollow rotating platform 21 detachably mounted on the support plate 13, a tray 22 connected to the rotating part of the hollow rotating platform 21, and a target object 23 placed on the tray 22. The target object 23 has a clear feature pattern, such as a chessboard pattern or a coded marker, so that the target object 23 can be clearly imaged on the image sensor of the industrial camera 31. In actual operation, the relative position and angle of the target object 23 and the industrial camera 31 can be changed according to certain rules, for example, adjusted at certain angular intervals (such as 15 degrees) and position intervals (such as 10 centimeters), to ensure that the industrial camera 31 can obtain clear images under different working conditions, that is, the calibration of the industrial camera 31 can be completed.

[0034] As shown in Figure 9 , in order to stably install the target object 23 on the tray 22, a stud is fixedly arranged on the middle of the tray 22, a through hole 24 is arranged on the middle of the target object 23, the stud penetrates through the through hole 24 of the target object 23, and a nut is sleeved on the part of the stud protruding from the target object 23.

[0035] As shown in Figure 11 , in order to adjust the temperature and humidity of the space where the industrial camera 31 is located according to the needs, the refrigeration assembly 6 includes an upper and lower liquid tank 61 and a frame 63. The liquid tank 61 stores cooling liquid (usually water), and the frame 63 has a plurality of semiconductor refrigerating sheets 62 and heat sinks 64 arranged on the inner side thereof. The plurality of semiconductor refrigerating sheets 62 are arranged on the bottom of the liquid tank 61, and the plurality of semiconductor refrigerating sheets 62 are arranged on the heat sinks 64. Second fans 65 are arranged on both ends of the heat sinks 64 and connected to the frame 63. The air flows of the two second fans 65 are in the same direction. The heat generated by the semiconductor refrigerating sheets 62 can be removed by the operation of the second fans 65, so that the temperature of the cooling liquid can be reduced by the operation of the semiconductor refrigerating sheets 62, and the low-temperature gas can be supplied to the area where the industrial camera 31 is located to provide support for the cooling. Alternatively, the gas can be controlled to flow through the cooling liquid and then to the space where the industrial camera 31 is located to increase the humidity.

[0036] As shown in Figure 12As shown, in order to transport the gas passing through the liquid tank 61 to the industrial camera 31, the transport pipe group 4 includes a dispersion pipe 44, a cover plate 42 and a cooling pipe 41 distributed vertically.

[0037] like Figure 13 As shown, the cover plate 42 is detachably mounted on the opening at the top of the liquid tank 61. In this arrangement, a liquid pipe 66 with a valve body is also required to be provided at the end of the liquid tank 61 to inject coolant into the liquid tank 61 or discharge coolant.

[0038] like Figure 13 As shown, a first electric three-way valve 421 and a second electric three-way valve 422 are disposed above the cover plate 42. The inlet end of the first electric three-way valve 421 is connected to the air pump 43 located above the cover plate 42. The two outlet ends of the first electric three-way valve are connected to a first air inlet pipe 425 and a second air inlet pipe 426, respectively, which extend through the cover plate 42. The bottom of the first air inlet pipe 425 is submerged in the coolant in the liquid tank 61. The output end of the second electric three-way valve 422 is connected to the dispersion pipe 44, and the two inlet ends of the second electric three-way valve 422 are connected to an air collection hood 423 and an outlet pipe 424, respectively, which extend through the cover plate 42. When the air pump 43 is in operation, gas is pumped into the first electric three-way valve 421. When the first air inlet pipe 425 and the air collection hood 423 are unobstructed, the gas flowing into the first electric three-way valve 421 comes into contact with the coolant. The gas that then leaves the coolant has a high humidity. The high-humidity gas flows from the gas collecting hood 423 to the dispersion pipe 44, and the gas is diverted into the space where the industrial camera 31 is located through the dispersion pipe 44, thereby increasing the ambient humidity.

[0039] like Figure 12 、 Figure 13 As shown, when assembling the delivery pipe group 4, the output pipe 424 and the second air inlet pipe 426 are connected and arranged at both ends of the cooling pipe 41, and the cooling pipe 41 is bent and distributed in the coolant of the liquid tank 61. Therefore, when the output pipe 424 and the second air inlet pipe 426 are unobstructed, the gas flowing into the first electric three-way valve 421 enters the cooling pipe 41. Since the cooling pipe 41 is immersed in the coolant and is bent, the contact time between the gas and the cooling pipe 41 is extended, thereby reducing the temperature of the gas. The low-temperature gas flows from the gas collecting hood 423 to the dispersion pipe 44, and the gas is diverted to the space where the industrial camera 31 is located through the dispersion pipe 44 to achieve cooling treatment. The bottom of the above-mentioned cooling pipe 41 and the liquid tank 61 can be made of materials with good thermal conductivity, such as copper, aluminum and other materials, to facilitate heat transfer.

[0040] like Figure 15As shown, in order to improve the temperature and dryness of the space where the industrial camera 31 is located, the heating assembly 5 comprises a housing 57, a heating rod 53 arranged inside the housing 57, and a first fan 55 arranged outside the housing 57. The top of the housing 57 is provided with an opening, and the bottom is provided with an output hole, and a conical structure air inlet shell 54 is arranged on the top of the housing 57. The first fan 55 is arranged at the larger size end of the air inlet shell 54 and drives the gas to flow into the housing 57. The top of the heating rod 53 is detachably arranged on the top of the housing 57, and a plurality of heat-conducting sheets 52 are arranged on the heating area of the heating rod 53. In the case that the first fan 55 works, the external gas is injected into the housing 57 and contacts the heating rod 53 and the heat-conducting sheets 52, so as to improve the temperature of the gas. The heated gas is output from the bottom output hole of the housing 57 and flows along the communication pipe 51 to the electromagnetic valve and then flows into the gas inlet end of the pipe body 441, and the gas is distributed to the space where the industrial camera 31 is located through the distribution pipe 44, so as to improve the ambient temperature. Of course, the low-temperature and high-temperature gas can be injected into the distribution pipe 44 at the same time under the cooperation of the heating assembly 5 and the refrigeration assembly 6, and such operation is to adjust the dryness of the environment without significantly adjusting the ambient temperature. The housing 57 is connected and arranged on the frame 63 of the refrigeration assembly 6 through the clamp 56.

[0041] As shown in the drawings, Figure 14 In order to disperse the gas as much as possible, the distribution pipe 44 comprises a pipe body 441 and a plurality of gas delivery heads 442, the plurality of gas delivery heads 442 are arranged above the pipe body 441 in a split and communicated manner, and the gas inlet end of the pipe body 441 is connected with the output end of the second electric three-way valve 422.

[0042] In addition, the distribution pipe 44 further comprises a plurality of support rods 443 which are detachably arranged on the cover plate 42, and a cross-shaped buckle groove 444 is arranged on the top of the support rod 443, and the cross-shaped intersection part of the pipe body 441 is buckled in the buckle groove 444, so as to stably and detachably arrange the pipe body 441.

[0043] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A calibration device for a binocular visual volume measurement device, characterized in that: The invention comprises a support frame (1), a target assembly (2) and a visual assembly (3) arranged above the support frame (1), and a refrigeration assembly (6), a heating assembly (5) and a conveying pipe group (4) located below the support frame (1); the visual assembly (3) comprises a state-adjustable bracket (34) and an industrial camera (31) detachably mounted on the bracket (34); the bracket (34) adjusts the position and tilt angle of the industrial camera (31); the target assembly (2) is adjustably mounted between the two sets of visual assemblies (3); the conveying pipe group (4) is located above the refrigeration assembly (6); the heating assembly (5) is mounted at the end of the refrigeration assembly (6); the heating assembly (5) and the refrigeration assembly (6) are connected to the conveying pipe group (4) through respective valve bodies, and the output end of the conveying pipe group (4) is arranged upward.

2. The calibration device for a binocular visual volume measurement device according to claim 1, characterized in that: The support frame (1) comprises a plurality of splicing tubes (14) and a plurality of splicing blocks (16), wherein two adjacent splicing tubes (14) are connected end to end via the splicing blocks (16) to form a mesh frame; a plurality of supporting legs (11) are provided below the mesh frame, and connecting plates (12) at the tops of the supporting legs (11) are connected and sleeved on the splicing tubes (14) via bolts; and two supporting plates (13) are provided in parallel in the middle area of ​​the mesh frame.

3. The calibration device for a binocular visual volume measurement device according to claim 2, characterized in that: A support shaft (38) is provided in the middle and lower part of the bracket (34) through a bearing (341), and a side plate (342) is fixedly provided at the bottom of the bracket (34); both ends of the support shaft (38) are connected by vertical plates (39) and slidably installed on the letter frame, and a telescopic cylinder (37) is tilted and hingedly provided between the side plate (342) and the support shaft (38), and the telescopic cylinder (37) adjusts the tilt angle of the bracket (34), and the support shaft (38) moves to adjust the position of the bracket (34).

4. The calibration device for a binocular visual volume measurement device according to claim 3, characterized in that: A slider (391) is fixedly provided at the bottom of the vertical plate (39), and the slider (391) is sleeved on the guide rail (15) at the end of the mesh frame; a threaded sleeve (382) is provided below the support shaft (38) and is connected through a second clamping plate (383), and the threaded sleeve (382) is sleeved on the lead screw (35), and the end of the lead screw (35) is connected to the power output shaft of the motor (36), and the motor (36) is installed on the mesh frame through a fixed plate (17).

5. The calibration device for a binocular visual volume measurement device according to claim 3, characterized in that: A plurality of clamping grooves (384) are provided at the end of the support shaft (38) along its circumferential direction, and a plum blossom plate (385) is sleeved on the end of the support shaft (38), and a clamping column (386) located in a channel of the plum blossom plate (385) is installed in the clamping groove (384); the plum blossom plate (385) is installed on a vertical plate (39) by bolt connection, and the end of the support shaft (38) is in contact with the vertical plate (39).

6. The calibration device for a binocular visual volume measurement device according to claim 2, characterized in that: The target assembly (2) comprises a hollow rotating platform (21) detachably mounted on a support plate (13), a tray (22) connected to a rotating portion of the hollow rotating platform (21), and a target (23) supported on the tray (22); a stud fixedly arranged in the middle of the upper portion of the tray (22) passes through a through hole (24) of the target (23), and a nut is sleeved on the portion of the stud protruding from the target (23).

7. The calibration device for a binocular visual volume measurement device according to claim 2, characterized in that: The refrigeration assembly (6) includes a liquid tank (61) and a frame (63) distributed up and down. Semiconductor refrigeration sheets (62) and heat sinks (64) are distributed up and down on the inner side of the frame (63). A plurality of semiconductor refrigeration sheets (62) are arranged in contact with the bottom of the liquid tank (61), and a plurality of semiconductor refrigeration sheets (62) are laid on the heat sinks (64). At the same time, a second fan (65) installed on the frame (63) is provided at both ends of the heat sink (64).

8. The calibration device for a binocular visual volume measurement device according to claim 7, characterized in that: The delivery pipe group (4) includes a dispersion pipe (44) distributed above and below, a cover plate (42) and a cooling pipe (41); a first electric three-way valve (421) and a second electric three-way valve (422) are provided above the cover plate (42); an inlet end of the first electric three-way valve (421) is connected to an air pump (43) located above the cover plate (42), and two output ends of the first electric three-way valve (421) are respectively connected to a first air inlet pipe (425) and a second air inlet pipe (426) provided through the cover plate (42). At the same time, the bottom of the first air inlet pipe (425) is immersed in the coolant in the liquid tank (61); the output end of the second electric three-way valve (422) is connected to the dispersion pipe (44), and the two inlet ends of the second electric three-way valve (422) pass through the cover plate (42) and are respectively connected to the air collecting cover (423) and the output pipe (424); the output pipe (424) and the second air inlet pipe (426) are connected and arranged at both ends of the cooling pipe (41), and the cooling pipe (41) is bent and distributed in the coolant in the liquid tank (61).

9. The calibration device for a binocular visual volume measurement device according to claim 8, characterized in that: The dispersion pipe (44) comprises a pipe body (441) and a plurality of gas delivery heads (442), wherein the plurality of gas delivery heads (442) are evenly distributed and connected and installed above the pipe body (441), and the air inlet end of the pipe body (441) is connected to the output end of the second electric three-way valve (422); the dispersion pipe (44) further comprises a plurality of support rods (443) detachably mounted on the cover plate (42), and a cross-structured buckle groove (444) is provided on the top of the support rod (443), and the cross-intersection portion of the pipe body (441) is buckled in the buckle groove (444).

10. The calibration device for a binocular visual volume measurement device according to claim 9, characterized in that: The heating assembly (5) comprises a shell (57), a heating rod (53) arranged on the inner side of the shell (57) and a first fan (55) located on the outer side of the shell (57); the top surface of the shell (57) is set to be open, and the bottom is provided with an output hole, and an air intake shell (54) with a frustum structure is installed on the top of the shell (57); the first fan (55) is installed at the larger end of the air intake shell (54) and drives the gas to flow into the shell (57); the top of the heating rod (53) is detachably installed on the top of the shell (57), and a plurality of heat conducting sheets (52) are installed above and below the heating area of ​​the heating rod (53); the heated gas is output from the bottom of the shell (57) and flows along the connecting pipe (51) to the solenoid valve and then flows into the air intake end of the tube body (441).

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