A black smoke car electronic snapshot system calibration device

Abstract

This invention discloses a calibration device for an electronic black smoke vehicle capture system, comprising a wireless remote-controlled vehicle, a device housing, a tilt adjustment component, and an automatic blackness switching component. The device housing is rotatably mounted on the wireless remote-controlled vehicle. The automatic blackness switching component is mounted on the device housing and connected to the tilt adjustment component. The automatic blackness switching component includes blackness plates, an adsorption electromagnetic mechanism, and a rotation drive mechanism. The blackness plates consist of multiple stacked standard Ringelmann blackness plates. The adsorption electromagnetic mechanism selects the blackness plate to be displayed and separates the other blackness plates above it. The rotation drive mechanism drives the separated upper blackness plates to flip, exposing the blackness plate to be displayed on top. This invention achieves automatic selection and flipping switching of multiple standard blackness plates through electromagnetic adsorption. Combined with electric tilt adjustment and overall horizontal rotation of the device, it features a simple structure, convenient operation, and high calibration efficiency.

Description

Technical Field

[0001] This invention relates to the field of metrology and calibration equipment technology, and specifically to a calibration device for an electronic capture system for black smoke vehicles. Background Technology

[0002] The widespread application of electronic black smoke detection systems for vehicles has placed higher demands on the efficiency and accuracy of calibration work. According to relevant calibration specifications, the calibration process requires sequentially presenting multiple standard Ringelmann blackness plates of different blackness levels to verify the accuracy of the system's readings across the entire measurement range.

[0003] Currently, calibration devices on the market can be broadly categorized into two types. One type has a relatively simple structure, capable of mounting only a single blackness plate. Changing between different grades of plates relies entirely on manual disassembly and reassembly, which is cumbersome, time-consuming, and inefficient for on-site calibration. The other type integrates multiple blackness plates onto the same mobile platform, but it has significant drawbacks in the plate switching method: some solutions employ a flip-page structure design with the center of the plate as the bending axis. The fold line passes precisely through the effective imaging area of ​​the blackness plate, and repeated bending over a long period will disrupt the uniformity of black and white density distribution in this area, causing the metrological characteristics of the standard plate to gradually deviate from the nominal value, affecting the reliability of the calibration results.

[0004] Furthermore, existing devices generally have limited functionality in adjusting the pose during the calibration process, resulting in a low level of automation. The vast majority of devices only have manual horizontal rotation capabilities and lack the means to precisely adjust the overall angle of the device electrically, making it difficult to adapt to the diverse needs of the relative positions of the capture camera and the calibration area under different road conditions. Summary of the Invention

[0005] In view of the shortcomings of the prior art mentioned above, the purpose of this invention is to provide a novel calibration device for an electronic black smoke capture system for vehicles, so as to solve the problems of easy damage to the uniformity of blackness plate density during component switching, inability to accurately adjust the overall angle of the device electrically, and lack of limit protection in the prior art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A calibration device for an electronic black smoke capture system for vehicles includes a wireless remote-controlled vehicle, a device housing, a tilt adjustment component, and an automatic blackness switching component. The device housing is rotatably mounted on the wireless remote-controlled vehicle. One end of the tilt adjustment component is disposed on the device housing, and the other end is connected to the automatic blackness switching component. The automatic blackness switching component is disposed on the device housing, with one end hinged to the device housing. The automatic blackness switching component includes blackness plates, an adsorption electromagnetic mechanism, and a rotation drive mechanism. The blackness plates include multiple stacked standard Ringelmann blackness plates. The adsorption electromagnetic mechanism is used to select the blackness plate to be displayed from the stacked blackness plates and separate the remaining blackness plates above it. The rotation drive mechanism is used to drive the separated upper blackness plates to rotate around their rotation axis to a preset position so that the blackness plate to be displayed is exposed on top.

[0008] Preferably, the blackness plate includes a first plate frame, several intermediate plate frames and a bottom plate stacked from top to bottom. A standard Ringelmann blackness plate is fixed on each of the first plate frame, each intermediate plate frame and the bottom plate. Each plate frame is detachably connected by an adsorption electromagnetic mechanism. The rotation drive mechanism is located on one side of the bottom plate, and its output end is fixedly connected to one side of the first plate frame so that the first plate frame rotates synchronously with the rotation drive mechanism.

[0009] Preferably, the blackness panel further includes a panel closing limit switch and a panel opening limit switch; the panel closing limit switch is used to detect the return position of the first panel frame; the panel opening limit switch is used to detect the flipped position of the non-target blackness panel group.

[0010] Preferably, the adsorption electromagnetic mechanism includes two sets of flip-plate electromagnetic components and one set of fixed electromagnetic components. The two sets of flip-plate electromagnetic components are respectively disposed on both sides of the black plate, and the fixed electromagnetic component is disposed on the side of the black plate away from the rotation drive mechanism.

[0011] Preferably, both the flip-plate electromagnetic component and the fixing electromagnetic component include a number of electromagnets and a number of magnetic metal plates equal to the number of the plate frame. Each electromagnet is located on the same horizontal plane and is fixedly installed. Each magnetic metal plate is fixedly connected to the corresponding plate frame. The electromagnets and the corresponding magnetic metal plates attract each other when energized and separate when de-energized.

[0012] Preferably, the rotary drive mechanism includes a flap motor, a synchronous transmission pair, a flap drive shaft, a rotary sleeve, and several circular collars. The flap motor drives the flap drive shaft to rotate and amplifies the torque through the synchronous transmission pair. The rotary sleeve is fixedly sleeved on the flap drive shaft and rotates synchronously with it. The several circular collars are arranged along the axial direction of the rotary sleeve, and each circular collar is rotatably sleeved on the rotary sleeve.

[0013] Preferably, each of the circular collars is fixedly connected to the corresponding intermediate plate frame via a connector. When any intermediate plate frame is driven to flip, the circular collar corresponding to that intermediate plate frame rotates around the rotating sleeve.

[0014] Preferably, the tilt adjustment assembly includes a linear drive, an adjustment shaft, and a bearing housing. The linear drive is installed inside the device housing, and its output end is connected to one side of the automatic blackness switching assembly. The adjustment shaft is installed on the device housing through the bearing housing, and shaft connectors are installed on both sides of the adjustment shaft. The adjustment shaft is connected to the other side of the automatic blackness switching assembly through the shaft connectors.

[0015] Preferably, the device chassis is further provided with a set of limit support rods, and an angle encoder is provided on one side of the adjusting shaft.

[0016] Preferably, the wireless remote control vehicle is fixedly provided with a base plate, the base plate is provided with a rotating support and an annular groove, the annular groove is provided with a plurality of rolling elements, the device housing is rotatably mounted on the base plate by the rotating support and supported by the rolling elements; a connecting plate extends from one side of the device housing, a locking screw is provided on the connecting plate, and a fixing seat is provided on the base plate accordingly, the locking screw can abut against the fixing seat to fix the device housing and the base plate relative to each other.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] (1) The calibration device of the present invention achieves automatic selection and flipping switching of multiple standard Ringelmann blackness plates through the coordinated cooperation of the adsorption electromagnetic mechanism and the rotation drive mechanism; the blackness plate to be displayed (target blackness plate) is locked in place, and the non-target blackness plate group is adsorbed and flipped, eliminating the need for manual replacement of blackness plates one by one, which significantly improves calibration efficiency; and the blackness plate does not need to be bent during the switching process, avoiding the destruction of the uniformity of black and white density distribution in the effective imaging area, and ensuring the long-term stability of the metrological characteristics of the standard plate.

[0019] (2) The calibration device of the present invention realizes the precise electric adjustment of the overall pitch angle of the automatic blackness switching component through the tilt adjustment component. With the real-time feedback of the angle encoder, the blackness plate to be displayed can be quickly and accurately adjusted to a posture that is approximately perpendicular to the optical axis of the camera, overcoming the problems of poor accuracy and low consistency of traditional manual adjustment, and effectively reducing the measurement uncertainty. The setting of the limit support rod further provides limit protection for the flip limit position, ensuring the safe and reliable operation of the device.

[0020] (3) The device housing of the calibration device of the present invention can be rotatably mounted on the wireless remote control vehicle through the cooperation of the rotating support and the rolling body. With the fixing structure of the locking screw, the overall angle of the device can be flexibly adjusted and locked in the horizontal direction, which can adapt to the relative position requirements of the capture camera and the calibration area under different road environments. The whole machine is remotely controlled by the remote control, and the operator can complete the entire calibration process without entering the road site, which significantly improves safety and convenience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the calibration device in an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the overall structure of the calibration device in an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 This is a front view schematic diagram of the calibration device in an embodiment of the present invention;

[0024] Figure 4 This is a rear view schematic diagram of the calibration device in an embodiment of the present invention;

[0025] Figure 5 This is a rear exploded view of a partial structure of the calibration device in an embodiment of the present invention;

[0026] Figure 6 This is a top view schematic diagram of the calibration device in an embodiment of the present invention;

[0027] Figure 7 This is a partial exploded view of the calibration device in an embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the wireless remote-controlled vehicle for the calibration device in an embodiment of the present invention.

[0029] In the diagram, 1. Wireless remote control car; 11. Base plate; 12. Rotary support; 13. Annular groove; 14. Rolling element; 15. Fixed seat; 2. Device housing; 21. Connecting plate; 3. Tilt adjustment assembly; 31. Linear drive; 32. Adjustment shaft; 33. First bearing seat; 34. Shaft connector; 35. Limit support rod; 36. Angle encoder; 4. Automatic blackness switching assembly; 41. Blackness plate; 411. First plate frame; 412. Middle plate frame; 413. Base plate; 414. Plate closing limit switch; 415. Plate opening limit switch; 416. 417. Contact plate; 42. Blackening plate; 43. Adsorption electromagnetic mechanism; 44. Flipping electromagnetic component; 45. Fixing electromagnetic component; 46. Electromagnet; 47. Magnetic metal plate; 48. Rotary drive mechanism; 49. Flipping motor; 40. Synchronous transmission pair; 41. Driving synchronous pulley; 42. Driven synchronous pulley; 43. Synchronous belt; 44. Flipping drive shaft; 45. Rotating sleeve; 46. Circular collar; 47. Connecting component; 48. Drive fixing component; 49. Second bearing seat; 40. Coupling; 5. Locking screw. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] As attached Figure 1-8 As shown, in an embodiment of the present invention, a calibration device for an electronic capture system for black smoke vehicles includes a wireless remote-controlled vehicle 1, a device housing 2, a tilt adjustment component 3, and an automatic blackness switching component 4. The device housing 2 is rotatably mounted on the wireless remote-controlled vehicle 1. One end of the tilt adjustment component 3 is disposed on the device housing 2, and the other end is connected to the automatic blackness switching component 4. The automatic blackness switching component 4 is disposed on the device housing 2, and one end is hinged to the device housing 2. The automatic blackness switching component 4 includes a blackness plate 4. 1. An adsorption electromagnetic mechanism 42 and a rotation drive mechanism 43, wherein the blackness plate 41 includes multiple stacked standard Ringelmann blackness plates 417, the adsorption electromagnetic mechanism 42 is used to select the blackness plate 417 to be displayed from the stacked blackness plate 41 and separate the remaining blackness plates 417 located above the blackness plate 417 from it; the rotation drive mechanism 43 is used to drive the separated upper blackness plate 417 to rotate around its rotation axis to a preset position so that the blackness plate 417 to be displayed is exposed at the top.

[0032] When the device is not in operation, the blackness plate 41 is stacked and stored on the device housing 2 for easy transportation and storage. When calibration is required, the blackness plate 417 to be displayed (target blackness plate) remains in place. The non-target blackness plate group above the blackness plate 417 is separated by the adsorption electromagnetic mechanism 42 and then driven by the rotation drive mechanism 43 to flip to the preset position, so that the blackness plate 417 to be displayed is exposed facing the camera.

[0033] In a specific embodiment of the present invention, the blackness plate 41 includes a first plate frame 411, eight intermediate plate frames 412, and a base plate 413 stacked sequentially from top to bottom. A standard Ringelmann blackness plate 417 is fixed to each of the first plate frame 411, each intermediate plate frame 412, and the base plate 413, totaling ten plates. The Ringelmann blackness grades range from 0.00 to 5.00, selected according to the calibration points specified in JJF 2080-2023 "Calibration Specification for Electronic Smoke Capture System for Vehicles". Each plate frame is detachably connected via an adsorption electromagnetic mechanism 42. The rotation drive mechanism 43 is located on one side of the base plate 413, and its output end is fixedly connected to one side of the first plate frame 411, so that the first plate frame 411 rotates synchronously with the rotation drive mechanism 43.

[0034] Specifically, the first plate frame 411 and the intermediate plate frame 412 are made of aluminum profile frames, and the standard Ringelmann blackness plates 417 on them are fixed by snap-fit ​​method; the standard Ringelmann blackness plates 417 fixed on the first plate frame 411 are grade 0.00, and the standard Ringelmann blackness plates 417 fixed on the eight intermediate plate frames 412 are grade 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 3.00 and 4.00 respectively; the bottom plate 413 is made of metal plate, and the standard Ringelmann blackness plates 417 on it are fixed by adhesive method, and are grade 5.00 full black standard Ringelmann blackness.

[0035] During the calibration process, when it is necessary to display the 5.00 level blackness plate, all the blackness plates 417 above it (including the first plate frame 411 and eight intermediate plate frames 412) are flipped and separated, and the blackness plate on the bottom plate 413 is exposed at the very top.

[0036] The base plate 413 is used to support all the plate frames, blackness plates and rotary drive mechanism 43; the first plate frame 411 serves as the power transmission plate for flipping, and one side of it is fixedly connected to the rotary drive mechanism 43 through the drive fixing member 437, which is used to drive the selected and separated non-target blackness plate group to flip together during flipping.

[0037] In another embodiment of the present invention, the number of frames of the blackness plate component 41 can be increased or decreased according to actual calibration requirements, for example, it can be set to three, five or eight frames, etc., with standard Ringelmann blackness plates 417 of different blackness levels fixed on each frame. Correspondingly, the number of electromagnets 423 and magnetic metal plates 424 in the flip-plate electromagnetic component 421 and the fixing electromagnetic component 422 is equal to the number of frames, and they are set one-to-one. The above-mentioned changes in quantity do not depart from the technical concept and protection scope of the present invention.

[0038] The black panel 41 also includes a panel closing limit switch 414 and a panel opening limit switch 415. The panel closing limit switch 414 is used to detect the return position of the first panel frame 411, and also includes a contact plate 416. One end of the contact plate 416 is fixedly connected to the first panel frame 411, and the other end contacts and triggers the panel closing limit switch 414 when the first panel frame 411 returns to its original position. When the first panel frame 411 flips back to its initial position, the panel closing limit switch 414 is triggered, and a signal is sent to notify the control system to stop the motor operation, ensuring that the panel frame returns to its accurate position and avoiding excessive flipping that could cause a collision. The panel closing limit switch 414 and the contact plate 416 are located on the side away from the rotary drive mechanism 43.

[0039] The opening limit switch 415 is located on one side of the rotary drive mechanism 43 and is used to detect the flip position of the non-target blackness panel group (by detecting the flip position of the first panel frame 411, it is indirectly confirmed that the non-target blackness panel group has been flipped to the preset position). When the non-target blackness panel group is flipped to the preset angle, the opening limit switch 415 is triggered, the control system cuts off the power supply to the motor, and realizes the confirmation of the flip position and the limit protection.

[0040] The adsorption electromagnetic mechanism 42 includes two sets of flip-plate electromagnetic components 421 and one set of fixed electromagnetic components 422. The two sets of flip-plate electromagnetic components 421 are respectively disposed on both sides of the black plate component 41, and the electromagnets 423 of each flip-plate electromagnetic component 421 are arranged and fixed on the first plate frame 411. The fixed electromagnetic component 422 is disposed on the side of the black plate component 41 away from the rotation drive mechanism 43, and the electromagnets 423 of the fixed electromagnetic component 422 are arranged and fixed on the bottom plate 413.

[0041] Both the flip-plate electromagnetic component 421 and the fixing electromagnetic component 422 include a number of electromagnets 423 and a number of magnetic metal plates 424, which are equal in number to the number of the plate frame. Each electromagnet 423 is located on the same horizontal plane and is fixedly installed. Each magnetic metal plate 424 is fixedly connected to the corresponding plate frame. When the electromagnet 423 is energized, it attracts its corresponding magnetic metal plate 424, locking the corresponding plate frame or putting it in a state where it can be attracted and carried away. When the electromagnet 423 is de-energized, the attraction force disappears, and the corresponding plate frame is released.

[0042] The flip-plate electromagnetic component 421 is used to control the adsorption and separation of the flip-plate frame, and the fixing electromagnetic component 422 is used to keep the bottom plate frame locked and keep the plate frames stacked stably.

[0043] When a black panel 417 needs to be displayed, it is positioned at the very top of the stacked panel frames. The control of the flip-up electromagnetic component 421 and the fixing electromagnetic component 422 is as follows: For the panel frame of the black panel 417 to be displayed (the target black panel) and all the panel frames below it, the corresponding flip-up electromagnetic component 421 is de-energized and disengaged, while the fixing electromagnetic component 422 is energized and engaged, locking this part of the panel frame onto the base plate 413 and keeping it stationary; For the non-target black panel group above the black panel 417 (i.e., all other black panels and their frames), the corresponding flip-up electromagnetic component 421 is energized and engaged, while the fixing electromagnetic component 422 is de-energized and disengaged, causing this part of the black panel group to detach from the panel frame of the black panel 417 to be displayed and flip together with the first panel frame 411. After flipping, the black panel 417 to be displayed is exposed at the very top, facing the camera.

[0044] refer to Figure 5 , 7 The rotary drive mechanism 43 includes a flap motor 431, a synchronous transmission pair 432, a flap drive shaft 433, a rotary sleeve 434, and several circular collars 435. The flap motor 431 drives the flap drive shaft 433 to rotate and amplifies the torque through the synchronous transmission pair 432. The rotary sleeve 434 is fixedly connected to the flap drive shaft 433 through a coupling 439 and rotates synchronously. Several circular collars 435 are arranged along the axial direction of the rotary sleeve 434 and are rotatably fitted onto the rotary sleeve 434.

[0045] The circular collar 435 and the rotating sleeve 434 are in clearance fit, which allows the circular collar 435 to rotate independently of the rotating sleeve 434.

[0046] Specifically, the synchronous transmission pair 432 includes a driving synchronous pulley 4321, a driven synchronous pulley 4322, and a synchronous belt 4323. The driving synchronous pulley 4321 is mounted on the output shaft of the flap motor 431, and the driven synchronous pulley 4322 is fixed on the flap drive shaft 433. The driving synchronous pulley 4321 and the driven synchronous pulley 4322 are connected by the synchronous belt 4323, and the number of teeth of the driving synchronous pulley 4321 is less than the number of teeth of the driven synchronous pulley 4322 to form a gear ratio that amplifies torque.

[0047] Specifically, a second bearing seat 438 is provided at both ends of one side of the base plate 413, and the flip plate drive shaft 433 is rotatably supported on the second bearing seat 438 by the bearing.

[0048] Each of the circular collars 435 is fixedly connected to the corresponding intermediate plate frame 412 via a connector 436. When any intermediate plate frame 412 is driven to flip, the circular collar 435 corresponding to that intermediate plate frame 412 rotates around the rotating sleeve 434.

[0049] When the flip motor 431 indirectly drives the flip drive shaft 433 to rotate, the rotating sleeve 434 rotates synchronously to provide rotational support and axial positioning for several circular collars 435. Since one side of the first plate frame 411 is fixedly connected to the flip drive shaft 433, the first plate frame 411 flips synchronously with the flip drive shaft 433, and drives the non-target blackness plate group (i.e., all the plate frames and blackness plates above the blackness plate 417 to be displayed) to flip together around the rotating sleeve 434. The blackness plate 417 to be displayed and the plate frames below it are kept stationary by the fixed electromagnetic component 422, and the corresponding circular collars 435 are loosely fitted on the rotating sleeve 434 and do not rotate with it, thereby achieving selective flipping.

[0050] The tilt adjustment component 3 includes a linear drive 31, an adjustment shaft 32, and a first bearing seat 33. The linear drive 31 is installed inside the device housing 2, and its output end is hinged to one side of the bottom of the base plate 413 of the automatic blackness switching component 4. The adjustment shaft 32 is rotatably supported on the first bearing seat 33 by a bearing. The first bearing seat 33 is fixed on the device housing 2. Rotary shaft connectors 34 are installed on both sides of the adjustment shaft 32, and the adjustment shaft 32 is connected to the other side of the automatic blackness switching component 4 through the rotary shaft connectors 34.

[0051] In a specific embodiment of the present invention, the linear drive 31 may be an electric push rod; thus, when the linear drive 31 extends or retracts, it pushes the automatic blackness switching component 4 to pitch and swing around the axis of the adjustment shaft 32.

[0052] The device housing 2 is also equipped with a set of limit support rods 35. When the pitch adjustment of the automatic blackness switching component 4 is adjusted to the limit position, the limit support rods 35 provide limit support to prevent excessive pitch adjustment of the automatic blackness switching component 4. An angle encoder 36 is provided on one side of the adjustment shaft 32 to detect the flip angle in real time and feed the angle data back to the control system to achieve precise closed-loop control of the tilt angle.

[0053] The wireless remote control vehicle 1 is fixedly provided with a base plate 11. The base plate 11 is provided with a rotating support 12 and an annular groove 13. A plurality of rolling elements 14 are provided in the annular groove 13. The device housing 2 is rotatably mounted on the base plate 11 through the rotating support 12 and supported by the rolling elements 14. A connecting plate 21 extends from one side of the device housing 2. A locking screw 5 passes through the connecting plate 21. A corresponding fixing seat 15 is provided on the front or side of the base plate 11. The locking screw 5 can abut against the fixing seat 15 to fix the device housing 2 and the base plate 11 relative to each other.

[0054] Specifically, the rotating support 12 is a rotary bearing, with its inner ring fixedly connected to the bottom surface of the device housing 2 and its outer ring fixedly connected to the base plate 11. The annular groove 13 is formed on the upper surface of the base plate 11, and the rolling element 14 is a ball bearing. Several balls are placed in the annular groove 13, and the bottom surface of the device housing 2 is supported on the balls to assist in support and reduce rotational friction. When the device housing 2 is rotated to the required angle, the locking screw 5 is tightened to press against the fixing seat 15 on the front or side of the base plate 11, thereby fixing the device housing 2 and the base plate 11 relative to each other. This allows for the overall horizontal angle adjustment and locking of the device, flexibly adapting to the relative position requirements of the capture camera and the calibration area under different road conditions.

[0055] The device housing 2 is equipped with a control system (not shown in the figure) and a power supply unit (not shown in the figure). All the above-mentioned electrical components and the wheel drive mechanism of the wireless remote control vehicle 1 are electrically connected to the control system, and the power supply unit provides power to the above-mentioned electrical components.

[0056] The device also includes a remote control (not shown in the figure). The remote control is wirelessly connected to the control system inside the device housing 2 and is used to remotely control the movement of the wireless remote control car 1, the pitch movement of the tilt adjustment component 3, and the selection and flipping operation of the plate frame of the automatic blackness switching component 4.

[0057] In a specific implementation of this invention, the working principle of the calibration device is as follows:

[0058] During calibration, place the device in front of the camera, use the remote control to move the wireless remote control car 1 to the predetermined position, rotate the device housing 2 and lock it so that the display direction is aligned with the camera.

[0059] First, according to the required blackness level, the adsorption electromagnetic mechanism 42 is selectively switched on and off to lock the blackness panel 417 to be displayed in place. The non-target blackness panel group (along with its frame) located above it is adsorbed into one piece and separated from the blackness panel 417 to be displayed. The flipping motor 431 is started to drive the non-target blackness panel group to flip, and the blackness panel 417 to be displayed is exposed at the top.

[0060] Then, the tilt adjustment component 3 is activated, and the linear drive component 31 pushes the blackness automatic switching component 4 to tilt and swing, with the angle encoder 36 providing real-time feedback, until the blackness plate 417 to be displayed is perpendicular to the camera optical axis.

[0061] The image capture system acquires and processes images, and the calibration personnel compare the measured values ​​with the standard values ​​to obtain the indication error.

[0062] After completing the current calibration, reset the flipped non-target blackness plate group, or directly adjust and switch to the next blackness plate 417 to be displayed through the adsorption electromagnetic mechanism 42, and repeat the above process until the calibration of all ten standard plates is completed.

[0063] Through the above method, this device achieves automatic selection and switching of multiple standard Ringelmann blackness plates 417. Combined with precise electric tilt adjustment and the overall horizontal rotation function of the device, it can efficiently and accurately complete the static and dynamic calibration of the black smoke vehicle electronic capture system. The entire operation can be completed remotely via remote control, eliminating the need for manual replacement of the blackness plates 417 or manual angle adjustment, significantly improving calibration efficiency and ease of operation.

[0064] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. A calibration device for an electronic black smoke vehicle capture system, characterized in that: The device includes a wireless remote-controlled vehicle, a housing, a tilt adjustment assembly, and an automatic blackness switching assembly. The housing is rotatably mounted on the wireless remote-controlled vehicle. One end of the tilt adjustment assembly is located on the housing, and the other end is connected to the automatic blackness switching assembly. The automatic blackness switching assembly is mounted on the housing, with one end hinged to the housing. The automatic blackness switching assembly includes blackness plates, an adsorption electromagnetic mechanism, and a rotation drive mechanism. The blackness plates consist of multiple stacked standard Ringelmann blackness plates. The adsorption electromagnetic mechanism selects the blackness plate to be displayed from the stacked blackness plates and separates it from the other blackness plates located above it. The rotation drive mechanism drives the separated upper blackness plates to rotate around their rotation axis to a preset position so that the blackness plate to be displayed is exposed at the top. The blackness plate includes a first plate frame, several intermediate plate frames and a bottom plate stacked from top to bottom. A standard Ringelmann blackness plate is fixed on each of the first plate frame, each intermediate plate frame and the bottom plate. Each plate frame is detachably connected by an adsorption electromagnetic mechanism. The rotation drive mechanism is located on one side of the bottom plate, and its output end is fixedly connected to one side of the first plate frame so that the first plate frame rotates synchronously with the rotation drive mechanism. The rotary drive mechanism includes a flap motor, a synchronous transmission pair, a flap drive shaft, a rotary sleeve, and several circular collars. The flap motor drives the flap drive shaft to rotate and amplifies the torque through the synchronous transmission pair. The rotary sleeve is fixedly sleeved on the flap drive shaft and rotates synchronously with it. Several circular collars are arranged along the axial direction of the rotary sleeve, and each circular collar is rotatably sleeved on the rotary sleeve. Each of the circular collars is fixedly connected to the corresponding intermediate plate frame via a connector. When any intermediate plate frame is driven to flip, the circular collar corresponding to that intermediate plate frame rotates around the rotating sleeve.

2. The calibration device for the electronic capture system of black smoke vehicles according to claim 1, characterized in that: The black panel also includes a panel closing limit switch and a panel opening limit switch; the panel closing limit switch is used to detect the return position of the first panel frame; the panel opening limit switch is used to detect the flipped position of the first panel frame.

3. The calibration device for the electronic capture system for black smoke vehicles according to claim 1, characterized in that: The adsorption electromagnetic mechanism includes two sets of flip-plate electromagnetic components and one set of fixed electromagnetic components. The two sets of flip-plate electromagnetic components are respectively located on both sides of the black plate, and the fixed electromagnetic component is located on the side of the black plate away from the rotation drive mechanism.

4. The calibration device for the electronic capture system for black smoke vehicles according to claim 3, characterized in that: Both the flip-plate electromagnetic component and the fixing electromagnetic component include a number of electromagnets and a number of magnetic metal plates equal to the number of the plate frame. Each electromagnet is located on the same horizontal plane and is fixedly installed. Each magnetic metal plate is fixedly connected to the corresponding plate frame. The electromagnets and the corresponding magnetic metal plates attract each other when energized and separate when de-energized.

5. The calibration device for the electronic capture system for black smoke vehicles according to claim 1, characterized in that: The tilt adjustment assembly includes a linear drive, an adjustment shaft, and a bearing housing. The linear drive is installed inside the device housing, and its output end is connected to one side of the automatic blackness switching assembly. The adjustment shaft is mounted on the device housing via the bearing housing. Shaft connectors are installed on both sides of the adjustment shaft, and the adjustment shaft is connected to the other side of the automatic blackness switching assembly via the shaft connectors.

6. The calibration device for the electronic capture system for black smoke vehicles according to claim 5, characterized in that: The device chassis is also equipped with a set of limit support rods, and an angle encoder is installed on one side of the adjustment shaft.

7. The calibration device for the electronic capture system for black smoke vehicles according to claim 1, characterized in that: The wireless remote control vehicle is fixedly provided with a base plate, which is provided with a rotating support and an annular groove. A plurality of rolling elements are provided in the annular groove. The device housing is rotatably mounted on the base plate by the rotating support and supported by the rolling elements. A connecting plate extends from one side of the device housing, and a locking screw passes through the connecting plate. A fixing seat is provided on the base plate, and the locking screw can be tightened against the fixing seat to fix the device housing and the base plate relative to each other.

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