A system and method for evaluating optical performance of monitoring device

Abstract

The present invention provides a system and method for evaluating the optical performance of a monitoring device, including: a picture card switching device, a fill light device, a clamping device, a multi-directional control device, a mechanical arm, and a master control device, wherein the master control device controls the operation of the picture card switching device, the fill light device, the clamping device, the multi-directional control device, the mechanical arm, and the monitoring device. The present invention combines coordinated batch testing between multiple intelligent equipment and device mechanisms to detect the optical performance of multiple intelligent monitoring devices to be tested, and can automatically switch to simulate optical test environments, thereby improving work efficiency while ensuring accuracy, realizing systematic management, and improving the automation and intelligence levels of the system.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to a system and method for evaluating the optical performance of a monitoring device. Background Art

[0002] With the increasing popularity of video surveillance systems and the application of new technologies, smart monitoring devices, as the main equipment, have gradually increased in types and their quality is also uneven. Therefore, in order to respond to the needs of the State Grid, the smart monitoring device is subjected to a comprehensive test of the intelligent visualization terminal to determine whether it meets professional standards. One of the tests, the optical camera module test, is particularly important. At the same time, it is necessary to test and record multiple indicators such as clarity, color reproduction, signal-to-noise ratio, wide dynamic capability, brightness uniformity, and distortion.

[0003] In the prior art, the optical testing methods include reflection testing, transmission testing, etc. The existing testing methods have the following problems: (1) Optical testing of intelligent monitoring devices is scarce in the power industry. Laboratory equipment is not complete and lacks systematic management. It is impossible to simulate the sunlight environment and the image card device needs to be switched manually; (2) When performing optical testing on intelligent monitoring devices, it is impossible to meet the needs of multiple intelligent monitoring devices to shoot at the same time. The positions of the intelligent monitoring devices need to be manually placed, resulting in extremely low work efficiency and quality; 3) When performing optical testing on intelligent monitoring devices, the steps are complicated, time-consuming and labor-intensive, and are not intelligent and fully automated.

[0004] In short, optical testing has many problems, such as incomplete environmental equipment, lack of detailed standards, complex testing procedures for multiple indicators, and informal operations that have a significant impact on key performance indicators of the test. At the same time, it is impossible to conduct batch testing, resulting in low testing efficiency. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides a system evaluation and method for the optical performance of a monitoring device. By combining coordinated batch testing among various intelligent equipment and device mechanisms, the optical performance of multiple intelligent monitoring devices to be tested is tested. At the same time, the automatic switching of the optical test environment can be simulated, which improves work efficiency while ensuring accuracy, realizes systematic management, and improves the level of automation and intelligence.

[0006] According to a first aspect of the present invention, a system for evaluating the optical performance of a monitoring device is provided, comprising: a card switching device, provided with a plurality of test cards of different types, for sequentially switching the cards; a fill light device, provided with a pair of fill light units, symmetrically distributed on both sides in front of the card switching device, for adjusting the light source according to the type of each card, and providing a corresponding standard test environment; a clamping device, for clamping the monitoring device; a multi-directional control device, with a plurality of clamping devices arranged on the top, located between the fill light units, for adjusting each monitoring device to be on the same horizontal line with the card; a mechanical arm, for placing and grabbing the monitoring device on the clamping device, and a placing mechanical arm and a grabbing mechanical arm are provided; a general control device, for controlling the operation of the card switching device, the fill light device, the clamping device, the multi-directional control device, the mechanical arm and the monitoring device, wherein the monitoring device collects all card information and sends the taken photos to the general control device for evaluating the optical performance indicators.

[0007] Furthermore, the clamping device includes a shearing module, a supporting module and a clamping module; wherein the shearing module is used to sense the shearing force of the placing robot arm placing the monitoring device, and send a placing instruction to the placing robot arm so that it continues to place the monitoring device; the supporting module is used to sense the placing pressure of the monitoring device, and send a clamping instruction to the clamping module; and at the same time send a releasing instruction to the placing robot arm; the placing robot arm releases the monitoring device and performs the next placing operation; the clamping module receives the clamping instruction to clamp the monitoring device, and sends the clamping pressure to the main control device; the main control device controls the clamping module to stop according to the judgment of the preset clamping pressure.

[0008] Furthermore, the multi-directional control device includes a scene recognition module, a distance measurement module, a rotation module, a movement module, a lifting module and a control module; wherein the scene recognition module is used to identify the type of the chart card, determine the test scene, and send angle scheduling instructions and lifting scheduling instructions to the control module; the distance measurement module measures the distance between the monitoring device and the center of the chart card, and sends a horizontal scheduling instruction to the control module; the rotation module receives the angle scheduling instruction sent by the control module for angle adjustment of the monitoring device; the movement module receives the horizontal scheduling instruction sent by the control module for forward and backward movement of the multi-directional control device; the lifting module receives the lifting scheduling instruction sent by the control module for lifting and lowering movement of the multi-directional control device; the control module controls the rotation module, the movement module and the lifting module so that the monitoring device and the center of the chart card are located on the same horizontal line.

[0009] Furthermore, the master control device receives the shooting completion signal sent by the monitoring device, and sends a rotation signal to the rotation module to switch between the monitoring devices; the master control device receives the rotation completion signal sent by the rotation module, and sends a picture card switching signal to the picture card switching device to switch the picture cards; the master control device receives the rotation completion signal and the picture card switching completion signal at the same time, and sends a monitoring device replacement signal to the clamping module and the robotic arm to replace the monitoring device.

[0010] Furthermore, the fill light device identifies the current chart type and adjusts the light intensity and color temperature according to the preset standard test environment data corresponding to the chart type.

[0011] Furthermore, the monitoring device takes pictures in a standard test environment and sends the pictures to the main control device for optical performance index analysis.

[0012] Furthermore, optical performance indicators include clarity, color reproduction, signal-to-noise ratio, wide dynamic capability, brightness uniformity, and distortion.

[0013] The second aspect of the present invention provides a method for evaluating the optical performance of a monitoring device, wherein the optical performance test of the monitoring device is performed using the above-mentioned evaluation system, and the evaluation process is as follows:

[0014] The robotic arm is placed with a monitoring device;

[0015] The image card switching device activates one of the test image cards;

[0016] The multi-party evaluation device identifies the type of the test chart, and adjusts the angle, level and height of the multi-party evaluation device so that the first monitoring device and the center of the test chart are located on the same horizontal line;

[0017] The fill light device automatically adjusts the test environment according to the type of the test chart;

[0018] The first monitoring device takes a picture of the test card in the test environment. After the picture is taken, the multi-party evaluation device rotates, and the second monitoring device identifies the type of the test card and takes a picture. The two devices rotate in sequence until all monitoring devices have completed the picture taking.

[0019] The picture card switching device switches the next test picture card;

[0020] The multi-party evaluation device identifies the type of the test card and determines whether to continue taking photos. If yes, the multi-party evaluation device adjusts the position and repeats the above steps. If no, the card switching device starts the next test card and repeats the above steps.

[0021] When all the test charts are switched in sequence, the grabbing robot takes away the tested monitoring device and conducts the next round of monitoring device evaluation;

[0022] After the evaluation is completed, the master control device analyzes the optical performance indicators.

[0023] Furthermore, the adjustment process of angle, level and height is as follows:

[0024] The multi-party evaluation device identifies the type of the test card and determines whether it is a large card;

[0025] If yes, grayscale processing is performed, and the angle position of the multi-party evaluation device is adjusted according to the center position of the test chart; the horizontal position of the multi-party evaluation device is adjusted according to the left and right appearance domains of the black frame of the test chart; the height position of the multi-party evaluation device is adjusted according to the upper and lower appearance domains of the black frame of the test chart;

[0026] If not, adjust the angle, level and height of the multi-party evaluation device until the edge of the test chart is detected and displayed in the real-time video.

[0027] Furthermore, the switching process of the test chart is as follows:

[0028] The chart card switching device receives the test instruction and starts;

[0029] The first picture card frame at the front of the plurality of picture card frames is moved downward to the support mechanism through the card feeding mechanism for shooting and evaluation;

[0030] At the same time, the multiple picture card frames are moved forward in sequence, so that the second picture card frame is located at the position of the first picture card frame, leaving the position of the last picture card frame empty;

[0031] After the test is completed, the card feeding mechanism moves the first card frame backward to the rear of the supporting mechanism, and then moves the first card frame upward to the position of the last card frame in the card frame; this is performed sequentially to complete the switching of all test cards.

[0032] The technical solution of the present invention forms a system based on an optical laboratory environment, realizes batch monitoring and shooting devices and fully automates batch testing of optical performance, ensures accuracy and improves detection speed.

[0033] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and other features, advantages and aspects of the embodiments of the present invention will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0035] Figure 1It is the overall structural system diagram of the evaluation system of the present invention;

[0036] Figure 2 is a structural diagram of a clamping device of an evaluation system of the present invention;

[0037] Figure 3 is a structural diagram of a rear support plate of a clamping device of the evaluation system of the present invention;

[0038] Figure 4 is a structural diagram of the multi-directional control device of the evaluation system of the present invention;

[0039] Figure 5 A structural diagram of a rotating disk of a multi-directional control device of the evaluation system of the present invention;

[0040] Figure 6 It is a structural diagram of the angle switching unit of the multi-directional control device of the evaluation system of the present invention;

[0041] Figure 7 It is a structural diagram of the lifting unit of the multi-directional control device of the evaluation system of the present invention;

[0042] Figure 8 It is a structural diagram of a control unit of the multi-directional control device of the evaluation system of the present invention;

[0043] Fig. 9 The structure of the driving unit of the multi-directional control device of the evaluation system of the present invention Figure 1 ;

[0044] Fig.10 The structure of the driving unit of the multi-directional control device of the evaluation system of the present invention Figure 2 ;

[0045] Fig.11 It is an overall structural diagram of the image card switching device of the evaluation system of the present invention;

[0046] Fig.12 A structural diagram of a graphic card frame of a graphic card switching device of an evaluation system of the present invention;

[0047] Fig.13 for Fig.11 The card receiving structure diagram of the card feeding mechanism in the middle A part;

[0048] Fig.14 for Fig.11 The structural diagram of the second track in the middle A position;

[0049] Fig.15 It is a full-automatic system flow chart of the evaluation method of the present invention;

[0050] Fig.16It is a flowchart of the image card switching device of the evaluation method of the present invention.

[0051] in, Figure 1-16 The corresponding relationship between the reference numerals and component names in the figure is:

[0052] 10 multi-directional control device, 110 rotating disk, 120 angle switching unit, 121 first drive motor, 122 cam divider, 123 first support base, 124 first diverter, 130 lifting unit, 131 screw lift, 1311 flange, 132 second diverter, 133 second drive motor, 134 second support base, 135 screw, 136 coupling, 140 control unit, 141 cabinet frame, 142 support plate, 143 rotation controller, 144 contact switch, 145 inverter, 146 transformer, 150 drive unit, 151 third drive motor, 152 two-way track, 153 base, 154 gear, 155 rack, 156 pulley, 157 connecting plate, 160 micro camera, 170 infrared ranging module, 180 air switch, 190 housing;

[0053] 20 chart card switching device, 210 hoisting part, 220 chart card frame, 221 first rail, 2211 first magnet, 222 second rail, 2221 upper rail, 2222 lower rail, 2223 middle plate, 230 chart card frame, 231 frame, 2311 first slider, 2312 second slider, 232 test chart card, 240 card feeding frame, 241 third rail, 242 fourth rail, 243 fifth rail, 250 card feeding mechanism, 251 third slider, 252 limiting part, 253 supporting groove;

[0054] 30 clamping device, 310 clamp, 311 outer clamping plate, 312 inner clamping plate, 313 bidirectional threaded rod, 314 travel lever, 315 rotating handle, 320 support plate, 321 front support plate, 322 rear support plate, 3221 raising plate, 3222 shear sensor, 330 bottom plate, 340 communication device, 350 power supply device;

[0055] 40 fill light device;

[0056] 50 robotic arm, 510 placement robotic arm, 520 grabbing robotic arm;

[0057] 60 shelves to be inspected;

[0058] 70 shelves have been inspected. DETAILED DESCRIPTION

[0059] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0061] In a first aspect of the present invention, a system for evaluating the optical performance of a monitoring device is provided. Figure 1 As shown, it includes: a chart switching device 20, a fill light device 40, a clamping device 30, a multi-directional control device 10 and a mechanical arm 50, and is also provided with a master control device for overall control of the evaluation system.

[0062] Specifically, the chart switching device 20 is provided with a plurality of different types of test charts for switching the charts in sequence; the fill light device 40 is provided with a pair of fill light units, which are symmetrically distributed on both sides in front of the chart switching device 20, and adjust the light source according to the type of each chart to provide a corresponding standard test environment; the clamping device 30 is used to clamp the monitoring device, and the monitoring device collects all chart information and sends the photos taken to the master control device for evaluation of optical performance indicators; the multi-directional control device 10 has a plurality of clamping devices 30 arranged on the top, which are located between the fill light units and are used to control each monitoring device On the same horizontal line with the image card; the mechanical arm 50 is used to place and grab the monitoring device on the clamping device 30, including a placing mechanical arm 510 and a grabbing mechanical arm 520. The placing mechanical arm 510 grabs the monitoring device from the shelf to be inspected 60 and places it on the clamping device 30, and the grabbing mechanical arm 520 grabs the monitoring device from the clamping device 30 and places it on the inspected shelf 70; the master control device is respectively connected to the image card switching device 20, the fill light device 40, the clamping device 30, the multi-directional control device 10 and the mechanical arm 50 to control each device and evaluate and analyze the optical performance indicators. The optical performance indicators include clarity, color reproduction, signal-to-noise ratio, wide dynamic capability, brightness uniformity, distortion, etc.

[0063] The general control device receives the shooting completion signal sent by the monitoring device, and sends a rotation signal to the rotation module to switch between the monitoring devices; receives the rotation completion signal sent by the rotation module, and sends a picture card switching signal to the picture card switching device 20 to switch the picture cards; receives the rotation completion signal and the picture card switching completion signal at the same time, and sends a monitoring device replacement signal to the clamping device 30 and the robotic arm 50 to replace the monitoring device.

[0064] [Clamping device 30]

[0065] like Figure 2 As shown, the clamping device 30 includes a shear module, a support module, and a clamping module; wherein,

[0066] The shear force module is used to sense the shear force of the placement robot 510 when placing the monitoring device, and send a placement instruction to the placement robot 510, so that it continues to place the monitoring device; the support module is used to sense the placement pressure of the monitoring device, and send a clamping instruction to the clamping module; at the same time, a release instruction is sent to the placement robot 510; the placement robot 510 releases the monitoring device and performs the next placement operation; the clamping module receives the clamping instruction to clamp the monitoring device, and sends the clamping pressure to the main control device; the main control device controls the clamping module to stop according to the judgment of the preset clamping pressure.

[0067] Specifically, Figure 2 As shown, the clamping device 30 includes: a clamp 310, a support plate 320, and a bottom plate 330; wherein,

[0068] The clamp 310 is a clamping module, including two symmetrically arranged outer clamping plates 311, two inner clamping plates 312 arranged on the inner side of the outer clamping plates 311, a bidirectional threaded rod 313 and a swing rod 314; the outer clamping plates 311 are fixed on both sides of the bottom plate 330; the swing rod 314 passes through the inner clamping plates 312 and is fixed between the outer clamping plates 311 through hidden holes, the inner clamping plates 312 can slide on the swing rod 314, and the swing rod 314 plays a role in supporting and positioning the inner clamping plates 312; a threaded rod 313 is provided in the middle of the inner clamping plates 312 Hole, a rotating handle 315 is provided at one end of the bidirectional threaded rod 313, and the other end passes through the threaded holes of the outer clamping plate 311 and the two inner clamping plates 312 in sequence, and finally contacts with the other outer clamping plate 311. The inner clamping plate 312 can be controlled to clamp or release the monitoring device by rotating the rotating handle 315; wherein, a first pressure sensor is provided on the inner clamping plate 312, which can sense the clamping pressure and send the clamping pressure to the master control device, and the master control device controls the rotating handle 315 to operate the clamp according to the clamping pressure. The rotating handle 315 also receives the monitoring device replacement signal sent by the master control device to rotate and release the monitoring device, and stops after the inner clamping plate 312 is separated by a certain distance, and the grabbing mechanical arm 520 grabs the monitoring device and takes it away.

[0069] The support plate 320 is provided with a front support plate 321 and a rear support plate 322, which are respectively arranged on both sides of the clamp 310. The rear support plate 322 not only supports the monitoring device, but also provides a placement space for the mechanical arm 50 to place the monitoring device. Figure 3 As shown, two raising plates 3221 of different heights are fixed at the front and rear positions of the bottom of the rear support plate 322. The rear raising plate is higher and is provided with a shear force module, such as a shear force sensor 3222, which is used to sense the shear force of the placement robot 510 to place the monitoring device, and send a placement instruction to the placement robot 510 to place the monitoring device; two raising plates of the same height are fixed at the front and rear positions of the front support plate 321, and their height is the same as the height of the lower raising plate at the bottom of the rear support plate 322. A pressure module, such as a second pressure sensor, is provided on the front support plate 321 to sense the pressure sensing of the placement of the monitoring device, and send a release instruction to the placement robot 510 to release the monitoring device, and at the same time send a clamping instruction to the rotating handle 315 to perform the clamping operation.

[0070] Specifically, the shear force sensor 3222, the first pressure sensor and the second pressure sensor are connected to the master control device and the robotic arm 50 through the communication device 340 to transmit shear force and pressure data, thereby controlling the movement of the robotic arm 50; the communication device 340 can use a wireless router, and is also used for the monitoring device to send the captured pictures to the master control device to evaluate the optical performance indicators; the test power supply of the monitoring device is supplied by the power supply device 350, and is equipped with a converter to convert current and voltage for multi-voltage level testing.

[0071] The support plate 320 is fixed to the floor by four raising plates. The rear support plate 322 is tilted at a certain angle, and the lowest point is the same height as the front support plate 321. This design is to place the monitoring device by placing the robot arm 510, so that the rear of the monitoring device first contacts the rear support plate, generates shear force induction, and then performs the placement operation. The overall area of ​​the rear support plate 322 provides a buffer space for the placement of the robot arm 510. Even if the monitoring device is placed on the edge of the rear support plate 322, it can play a command role, so that even if a robot arm with average accuracy is used, accurate placement can be achieved. Through the design of a special structure, the accuracy requirements for the robot arm are reduced, which reduces the cost of the entire evaluation system.

[0072] The bottom plate 330 is provided with screw holes, and the clamp 310 is fixed on the rotating disk 110 of the multi-directional control device 10 by bolts.

[0073] Specifically, anti-friction rubber pads are provided on the support plate 320 and the inner clamping plate 312 to prevent the monitoring device from sliding and rubbing during the clamping operation, making the clamping more secure and also protecting the monitoring device.

[0074] Specifically, the clamp 310 is arranged perpendicular to the diameter of the rotating disk 110, and the support plate 320 is arranged along the diameter of the rotating disk 110, so as to ensure that the camera of the monitoring device is clamped and fixed radially outward.

[0075]

Multi-directional control device 10

[0076] like Figure 4 As shown, the multi-directional control device 10 includes a scene recognition module, a distance measurement module, a rotation module, a movement module, a lifting module and a control module; wherein,

[0077] The scene recognition module uses a micro camera 160, uses deep learning technology to identify the type of the chart, determines the test scene, and sends angle scheduling instructions and lifting scheduling instructions to the control module to achieve autonomous positioning; the distance measurement module uses an infrared distance measurement module 170 to measure the distance between the monitoring device and the center of the chart, and sends a horizontal scheduling instruction to the control module; the rotation module is set in the angle switching unit 120, receives the angle scheduling instruction sent by the control module, and is used for the angle adjustment of the monitoring device; the mobile module is set in the driving unit 150, receives the horizontal scheduling instruction sent by the control module, and is used for the forward and backward movement of the multi-directional control device 10; the lifting module is placed in the lifting unit 130, receives the lifting scheduling instruction sent by the control module, and is used for the lifting movement of the multi-directional control device; the control module is placed in the control unit 140, and controls the rotation module, the mobile module and the lifting module so that the monitoring device and the center of the chart are on the same horizontal line. In the regulation of spatial orientation, its accuracy is controlled between millimeters, which shows its measurement accuracy and full automation.

[0078] Specifically, Figure 4 As shown, a rotating disk 110 is installed at the top of the multi-directional control device 10, and an angle switching unit 120, a lifting unit 130, a control unit 140, and a driving unit 150 are arranged in sequence downward; a micro camera 160 and an infrared ranging module 170 are vertically distributed at the center of one side of the angle switching unit 120, and an opening 180 is set at a corner on the same side.

[0079] Specifically, the control unit 140 uses a visual terminal positioning system composed of a micro camera 160 and an infrared ranging module 170 to autonomously limit the scene perception in the laboratory, and can automatically adjust the height in combination with a type of test chart intelligent ranging of the chart switching device 20.

[0080] Specifically, the micro camera 160 is arranged outside the side of the angle switching unit 120 facing the shooting target, at the same horizontal position as the angle switching unit 120, for detecting and identifying the type of the test chart and sending the chart type and spatial position information to the control unit 140 to call the corresponding control command; the infrared distance measurement module 170 is arranged directly below the micro camera 160, for measuring the distance between the monitoring device and the test chart and sending the distance data to the control unit 140 to adjust the position; an air switch 180 is also arranged obliquely above the micro camera 160 for emergency braking to increase the safety factor. When the system is in danger, manual braking is performed.

[0081] [Rotating disk 110]

[0082] like Figure 5 As shown, a plurality of clamping devices 30 are evenly arranged around the rotating disk 110; a mounting hole is provided in the center of the rotating disk 110 for mounting on the angle switching unit 120; a communication device 340 and a power supply device 350 are arranged around the mounting hole; the communication device 340 can adopt a wireless router, which is used for multiple monitoring devices to send pictures to the main control device, and evaluate the optical performance indicators of each monitoring device; the power supply device 350 is equipped with a converter, which supports voltage and current conversion while providing multiple power supplies for the monitoring device at the same time, so as to adapt to the test power supply of monitoring devices with different voltage levels.

[0083] Specifically, this embodiment Figure 5 As shown, a six-point rotating disk is used, and six clamping devices 30 are set, namely the first clamping device, the second clamping device, the third clamping device, the fourth clamping device, the fifth clamping device, and the sixth clamping device. Each clamping device is radially arranged along the center point of the six-point rotating disk, and its included angle is 60° and evenly distributed to ensure the accurate staggering of the six-position monitoring devices. It can also be selected in multiple directions according to actual needs and the size of the monitoring device, as long as it is ensured that each conversion of the angle switching device is the same as the angle of the two clamping devices.

[0084] Specifically, the wireless router of this embodiment is fixed to the rotating disk 110 through an L-shaped wireless router support plate; the power supply device 350 is fixed to the rotating disk 110 through an L-shaped support plate. The L-shaped support plate is used to increase the stability of the router and the power supply device 350, and no displacement occurs during the rotation process.

[0085] [Angle switching unit 120]

[0086] like Figure 6As shown, the angle switching unit 120 includes a first driving motor 121, a cam divider 122 and a first supporting base 123; the first driving motor 121 is connected to the first steering gear 124 by bolts, and is connected to the cam divider 122 by the first steering gear 124; the first driving motor 121, the cam divider 122 and the first steering gear 124 are respectively fixed to the first supporting base 123; the top of the cam divider 122 is fixed to the mounting hole in the center of the rotating disk 110 by bolts.

[0087] Specifically, the first drive motor 121 is connected to the cam divider 122 to provide power to the cam divider 122; the first support base 123 serves as a support structure for the first drive motor 121 and the cam divider 122, and the rotating disk 110 is fixed to the cam divider 122 by bolts. The conversion angle of the cam divider 122 is allocated according to the number of clamping devices 30. For example, when a hexagonal rotating disk is selected, the conversion angle of the cam divider is 60°, and the auxiliary monitoring device completes the test work.

[0088] [Lifting unit 130]

[0089] like Figure 7 As shown, the lifting unit 130 includes a screw lift 131, a second diverter 132, a second drive motor 133 and a second support base 134;

[0090] Four screw lifts 131 are provided, namely the first screw lift, the second screw lift, the third screw lift and the fourth screw lift, which are respectively installed at the four corners of the second support base 134, and a flange 1311 is provided on the top, which is fixed to the first support base 123 by bolts.

[0091] Three second diverters 132 are provided, which are sequentially arranged in the middle of the second support base 134 ; the second drive motor 133 drives four screw lifts 131 through a screw 135 ; the four screw lifts 131 are respectively connected to the three second diverters 132 through a rotating shaft 136 .

[0092] Specifically, the screw lift 131 uses a screw lift, which is composed of a worm wheel, a worm, a housing, a bearing, a screw and other parts. The working principle of the lift is: the motor or manual drive of the worm to rotate, the worm drives the worm wheel to rotate at a reduced speed, the inner cavity of the worm wheel is processed into an internal thread, and the screw is driven to move up and down. Due to the worm wheel and worm inside, the reduction effect of the screw can achieve the effect of amplifying the thrust. The SJA series screw lift provides a new and mature solution for heavy-load linear motion.

[0093] Specifically, the four-position screw lift 131 controls the rotating disk 110 and the angle switching unit 120 to achieve vertical ascent and descent, and controls the spatial horizontal position of the center of the optical axis of the monitoring device. The second drive motor 133 is connected to the four screw lifts 131 through the screw 135. By controlling multiple screw lifts by one drive motor, the stability of the lifting platform can be guaranteed, and the four screw lifts 131 can operate at the same time to ensure that the center of the optical axis of the monitoring device is horizontal. Among them, the first screw lift is located at the left rear of the lifting unit 130, providing a lifting function for the left rear position, the second screw lift is located at the right rear of the lifting unit 130, providing a lifting function for the left rear position, the third screw lift is located at the left rear of the lifting unit 130, providing a lifting function for the left front position, and the fourth screw lift is located at the left rear of the lifting unit 130, providing a lifting function for the right front position.

[0094] [Control unit 140]

[0095] like Figure 8 As shown, the control unit 140 includes a cabinet frame 141, a support plate 142, a rotation controller 143, a contact switch 144, a frequency converter 145 and a transformer 146; the support plate 142 is vertically arranged in the middle of the bottom plate of the cabinet frame 141; the rotation controller 143, the frequency converter 145 and the transformer 146 are arranged on the support plate 142 in sequence; the contact switch 144 is respectively connected to the cabinet frame 141 and the support plate 142; the second support base 134 is fixed to the top of the cabinet frame 141 by bolts. The cabinet frame 141 is a rectangle composed of 12 square steels to increase the stability of the entire device; the rotation controller 143 is provided with the first and second rotation controllers; the contact switch 144 is provided with the first and second contact switches.

[0096] Specifically, the first rotation controller is used to control the rotation of the third drive motor 151 (in the drive unit 150); the second rotation controller is used to control the rotation of the first drive motor 121; the frequency converter 145 is used to provide 380V voltage to the cam divider 122; the transformer 146 is a 24V transformer, which is used to provide voltage support for the contact switch 144, the wireless router with 6 network ports, and the power supply device 350; the bottom of the cabinet frame 141 is connected to the drive unit 150 as a supporting body; the first contact switch is connected to the cabinet frame 141 through a U-shaped plate and fixed to the support plate 142, and its function is to provide a positioning signal of the body; the second contact switch is connected to the cabinet frame 141 through a U-shaped plate and fixed to the support plate 142, and its function is to provide an in-position signal of the lifting unit 130. The first contact switch and the second contact switch are connected in sequence to timely output the in-position signal to the master control device to achieve real-time control and data recording.

[0097] [Drive unit 150]

[0098] like Fig. 9As shown, the drive unit 150 is a horizontal adjustment mechanism, including a third drive motor 151, a two-way track 152, a base 153, a gear 154, a rack 155 and a pulley 156; the third drive motor 151 plays a driving role, and the gear 154 cooperates with the rack 155 to realize the horizontal forward and backward movement of the device; the third drive motor 151 is controlled by the first rotation controller to realize program control; the two-way track 152 uses a double screw as a transmission track, which is fixed to the ground, with multiple connecting plates 157 in the middle and a pulley 156 on the top; the gear 154 is connected to the rack 155; the rack 155 is fixed to the base 153; the base 153 is an L-shaped long base, which is arranged between the two-way tracks 152 and fixed with multiple connecting plates 157; the pulley 156 is evenly arranged on the two-way track 152 and fixed to the bottom of the cabinet frame 141 by bolts.

[0099] Specifically, the pulley 156 uses four double pulleys, two of which are arranged on a single track, and cooperate with the bidirectional track 152 to ensure the overall level and support the whole, and cooperate with the third drive motor 151 as a driving part; Fig.10 As shown, the third driving motor 151 is connected to the gear 154, the gear 154 is connected to the rack 155 to form a driving device, the four double pulleys are connected to the control unit 140, and the overall driving device is controlled and driven by the control unit 140 to achieve automation.

[0100] [Housing 190]

[0101] The multi-directional control device 10 is also provided with a shell 190; the shell 190 is arranged on the outside of the angle switching unit 120 and the lifting unit 130; the micro camera 160 is arranged on the outside of the side of the shell 190 facing the test chart, at the same horizontal position as the angle switching unit 120; the infrared ranging module 170 is arranged directly below the micro camera 160; a safety device is also provided obliquely above the micro camera 160, and an air switch 180 is provided for emergency braking of the device.

[0102] The housing 190 is provided to protect the device parts, prevent the influence of sound, light and electricity, and increase the accuracy and life of the equipment.

[0103]

Image card switching device 20

[0104] like Fig.11 As shown, the front-to-back direction of the image card switching device is defined as the X-axis, the direction pointing to the X-axis is the positive direction, and the direction away from the X-axis is the negative direction of the X-axis; the vertical direction is the Z-axis, the direction pointing to the Z-axis is the positive direction of the Z-axis, and the direction away from the Z-axis is the negative direction of the Z-axis.

[0105] The card switching device 20 includes a hanging part 210, a card rack 220, a plurality of card frames 230, a card feeding rack 240, a card feeding mechanism 250 and a general control part.

[0106] [Lifting unit 210]

[0107] The hoisting part 210 is hoisted on the roof of the laboratory; a dustproof plate can be set between the hoisting part 210 and the chart frame 220 to prevent the dust from falling from the roof from affecting the chart. The hoisting design reduces the utilization rate of the ground, and also increases the stability of the chart, to prevent other machines from vibrating through the ground during operation, which affects the stability of the chart. According to the needs of hoisting, the design of the relevant mechanical structure is carried out to make the entire switching device more adaptable to the requirements of hoisting, such as lightness, stability, and easy operation.

[0108] [Card rack 220]

[0109] The chart card frame 220 is fixedly connected to the bottom surface of the hanging part 210 through a bracket, and consists of a frame body composed of four pillars and a top composed of four cross bars. The cross bars on both sides of the top of the chart card frame 220 are provided with first tracks 221 along the X-axis, and the second tracks 222 are provided on both sides of the bottom along the X-axis. The second track 222 connects the two pillars on the same side.

[0110] [Image card frame 230]

[0111] There are multiple card frames 230, which are vertically arranged inside the card frame 220 along the Z axis and slide forward and backward along the card frame 220. Fig.12 As shown, the chart frame 230 includes a frame 231, and the test chart 232 is disassembled and installed in the frame 231; first sliders 2311 are provided on both sides of the top of the frame 231, and slide forward and backward in cooperation with the first track 221; second sliders 2312 are provided on both sides of the bottom of the frame 231, and slide forward and backward in cooperation with the second track 222.

[0112] A first magnet 2211 is disposed above the first track 221, and a first slider 2311 matched therewith is made of iron material. The first magnet 2211 is controlled by a driving device to slide forward and backward along the first track 221, thereby driving the first slider 2311 to move forward and backward.

[0113] Specifically, Fig.14 As shown, the second track 222 is a double track, the upper track 2221 is used for the sliding of the card frame 230, and the lower track 2222 is used for the sliding of the card feeding mechanism 250. A middle plate 2223 is provided in the middle, and a track is provided on the middle plate 2223 for the sliding of the card frame 230. The two sides of the second track 222 are respectively fixed to the pillars in front and behind the card frame 220. The double track is formed by combining double L-shaped tracks, and the card feeding mechanism 250 slides on the lower track 2222 to realize the return of the card feeding mechanism 250 to the starting point, without the need to return along the original path, saving switching time and also reducing the cost of the equipment.

[0114] Specifically, the track can be a linear track, installed in parallel or in parallel and combined with side installation to form an L-shaped double track, so as to realize the linear sliding and turning sliding of the card feeding mechanism 250.

[0115] [Card feeding rack 240]

[0116] The card feeding rack 240 is arranged at the bottom of the card rack 220, and is formed by the downward extension of the column of the card rack 220, and the bottom is composed of four cross bars; the cross bars on both sides of the bottom along the X-axis are provided with a third track 241, the pillars on both sides of the front along the Z-axis are provided with a fourth track 242, and the pillars on both sides of the rear along the Z-axis are provided with a fifth track 243.

[0117] Specifically, the frame of the card feeding frame 240 is made of L-shaped material, and each track is arranged inside the L-shape, while the outer extension is used to support the card frame 230, thereby ensuring the stability of the card frame 230 during the transmission process.

[0118] [Card delivery mechanism 250]

[0119] like Fig.13 As shown, the card feeding mechanism 250 is slidably installed on the support of the card feeding rack 240 along the Y-axis, and a third slider 251 is provided at both ends connected to the card feeding rack 240. It can slide back and forth along the second track 222, slide back and forth along the third track 241, slide up and down along the fourth track 242, and slide up and down along the fifth track 243.

[0120] The plane of the card feeding mechanism 250 is parallel to the plane of the second track 222, which is conducive to the translation of the card frame 230. By setting card feeding gaps on both sides of the second track 222, the card feeding gaps are filled by the card feeding mechanism 250, so that the card feeding mechanism 250 can receive and feed cards.

[0121] At the same time, a limiting portion 252 is provided at the junction of the card feeding mechanism 250 and the second track 222. The limiting portion 252 is arranged on the inner side of the second track 222 adjacent to the pillar, that is, the position where the card feeding is vacant, for limiting the sliding of the card feeding mechanism 250 and playing a role in sliding limitation of the card feeding mechanism 250.

[0122] The card feeding mechanism 250 is provided with a support groove 253, and the bottom of the card frame 230 is sunk into the support groove 253, and the card feeding mechanism 250 drives the card frame 230 to slide. The width and length of the support groove 253 are the same as the thickness and length of the card frame 230, and the depth of the support groove 253 is designed according to the frame of the card frame 230, so as to fix the card frame 230 and not cover the test card 232.

[0123] The size of the limiting portion 252 is set according to the width of the edge of the supporting groove 253 of the card feeding mechanism 250 , and plays a limiting role without affecting the support of the card frame 230 .

[0124] Specifically, when the card feeding mechanism 250 receives a card, the card feeding mechanism 250 is inserted into the card feeding gap, and the first card drawing frame 230 is pushed by the card drawing frame 230 to move the card feeding mechanism 250 and enter the supporting groove 253 of the card feeding mechanism 250, thereby realizing the card feeding mechanism 250 receiving a card;

[0125] When the card feeding mechanism 250 is feeding a card, the card feeding mechanism 250 drives the first card frame 230 to move upward along the fifth track 243, and the first card frame 230 enters the rearmost position of the card frame 220 through the card feeding gap. When the card feeding mechanism 250 reaches the limiting portion 252, the first magnet 2211 adsorbs the first sliders 2311 on both sides of the first card frame 230, lifts the first card frame 230 and drives the first sliders 2311 to enter the first track 221. The first driving motor drives the first slider 2311 to slide into the rearmost position of the card frame 230, thereby realizing the card feeding process of the card feeding mechanism 250.

[0126] At the same time, the card feeding mechanism 250 returns to its original position: the card feeding mechanism 250 first moves downward and enters the lower track below the second track 222, and then slides to the starting position. The starting position of the card feeding mechanism 250 is located at the top in front of the card feeding frame 240 and connected to the second track 222.

[0127] [General Control Department]

[0128] The main control part is arranged on the ground for easy operation. The main control part is provided with a driving device and a controller to control the sliding and starting and stopping of the card frame 230 and the card feeding mechanism 250.

[0129] Among them, the driving device includes a first driving motor, a second driving motor and a third driving motor; the first driving motor drives the first slider 2311 and the second slider 2312 of the card frame 230 to slide forward and backward; the second driving motor drives the third slider 251 of the card feeding mechanism 250 to slide forward and backward and up and down; the third driving motor drives the first magnet 2211 to move forward and backward.

[0130] Specifically, the driving motor is electrically connected to the driven slider. The sliding mechanism uses a screw or belt drive to slide and position; it can be assembled with linear rails, linear sliders, guides and other devices to drive the card frame or card feeding mechanism to slide. The controller controls the switching of the card and the start and stop of the driving device.

[0131] The specific working process is:

[0132] The image card switching device 20 receives the test instruction and starts;

[0133] The first driving motor slides the plurality of image cards forward, so that the first image card in front moves to the card feeding mechanism 250, and at the same time, the second image card takes the position of the first image card, leaving the position of the last image card vacant;

[0134] The card feeding mechanism 250 drives the first image card to move downward to the shooting position for shooting;

[0135] After the shooting is completed, the card feeding mechanism 250 drives the first image card to move backward to the rear of the card feeding frame 240, and then moves the first image card upward to the rear of the image card frame 220;

[0136] The first magnet 2211 attracts the first slider 2311 of the first image card, lifts the first image card, and the first slider 2311 enters the first track 221;

[0137] The first driving motor drives the first slider 2311 of the first image card to slide forward into a position reserved for the last image card;

[0138] The card feeding mechanism 250 slides forward along the lower track 2222 of the second track 222 to a starting position;

[0139] Determine whether to shoot the second test chart. If yes, repeat the above process and shoot. If no, stop switching. Or repeat the above process but determine not to shoot, and shoot the third, fourth, etc. test charts in sequence until all test charts are switched;

[0140] If the next round of evaluation of the monitoring device to be tested is to be carried out, the above process is repeated to switch the test chart.

[0141] In the present card switching device 20, all tracks are arranged in pairs to ensure the balance of force during the transmission process and ensure the stability of the card; all pillars and cross bars are made of L-shaped lightweight materials, so that tracks are arranged inside the L-shape, and the side of the L-shape is lengthened. The side plays the role of fixing and supporting the card frame, eliminating the support structure for the card shooting and reducing the overall weight of the device to adapt to the hoisting installation method; the card feeding mechanism 250 adopts a groove design, which not only plays the role of fixing the card frame 230, but also achieves the purpose of miniaturization and simplicity of the equipment. The transportation of the test card can be completed by using a sliding rod.

[0142]

Fill light device 40

[0143] The fill light device 40 is provided with a pair of fill light units, symmetrically distributed on both sides of the bidirectional track 152, in the test laboratory, simulating a standard test environment. Every time a picture card is replaced, the light adjustment is automatically performed to automatically adjust the appropriate light source and improve the uniformity of the fill light, so as to ensure the accuracy of the test of the monitoring device and reduce errors.

[0144] The specific working process is:

[0145] According to the standard requirements of the performance indicators evaluated by the monitoring device, the picture card type and the corresponding standard test environment are preset in the master control device. After the fill light device 40 identifies the picture card type, it sends the picture type to the master control module. The master control module sends the corresponding standard environment data to the fill light device 40. The fill light device 40 adjusts conditions such as light intensity and color temperature according to the data to simulate the standard test environment.

[0146]

Robotic Arm 50

[0147] The robot arm 50 can be one or two:

[0148] When one robot arm 50 is selected, it is placed on one side of the multi-directional control device 10, and receives placement instructions and grabbing instructions at the same time: when receiving the placement instruction, the rotating disk 110 with the monitoring device installed is grabbed from the shelf 60 to be inspected and placed on the angle switching device; when receiving the grabbing instruction, the rotating disk 110 of the tested monitoring device is grabbed from the angle switching device and placed on the inspected shelf 70; fully automatic seamless connection is achieved, the efficiency of optical evaluation is improved while ensuring the accuracy of performance indicators; when one robot arm is selected, the top of the cam divider 122 of the angle switching unit 120 and the mounting hole in the center of the rotating disk 110 are movably connected, such as a snap-on or embedded design, which is easy to disassemble and install.

[0149] When two units are selected, they are placed on both sides of the multi-directional control device 10, one of which is located next to the shelf to be inspected 60 as the placement robot arm 510, and the other is located next to the inspected shelf 70 as the grabbing robot arm 520. The placement robot arm 510 receives the placement instruction, grabs the monitoring device of the shelf to be inspected 60 to the clamping device 30, and the grabbing robot arm 520 receives the grabbing instruction, grabs the monitoring device on the clamping device 30 to the inspected shelf 70, and receives and works at the same time, realizing fully automatic seamless connection, improving the efficiency of optical evaluation and ensuring the accuracy of performance indicators.

[0150] The specific workflow is:

[0151] When the rotating disk 110 of the multi-directional control device 10 rotates one circle and multiple monitoring devices complete the optical test, a test completion signal is sent to the master control device. At the same time, when the image card switching device 20 sends a signal that all the image cards are completed to the master control device, the master control device sends a monitoring device replacement signal to the rotating handle 315 and the mechanical arm 50 to replace the monitoring device; the monitoring device replacement signal is divided into a placement command and a grabbing command;

[0152] The robot arm 50 receives the placement instruction, clamps the monitoring device of the shelf 60 to be inspected, moves to the top of the clamping device 30 and then lowers it. After the rear side of the monitoring device contacts the rear support plate 322, it receives the placement instruction issued by the shear module and lowers the monitoring device completely. When it receives the release instruction issued by the support module, it releases the monitoring device and proceeds to the next task.

[0153] The rotating handle 315 is rotated to release the monitoring device, and at the same time, the robotic arm 50 receives the grabbing instruction, grabs the monitoring device, and places it on the inspected shelf 70.

[0154] In this embodiment, a low-precision mechanical arm is used, and there will be a certain error each time the monitoring device is replaced. However, the real-time precise control of the multi-directional control device completely makes up for the problem of mechanical arm precision, and the overall use of multiple components meets the high-precision requirements of the evaluation, thereby greatly reducing the cost of the entire evaluation system.

[0155] Specifically, the price of a high-precision robotic arm ranges from 100,000 to 500,000 yuan, and the price of a low-precision robotic arm ranges from 10,000 to 100,000 yuan. This technical solution only adds a shear module and a support module to the clamping device, so that a low-precision robotic arm can be used. The overall design cost of this solution system is very low, but combined with other parts as a whole, it still has a high detection accuracy and also plays a role in reducing costs.

[0156] A second aspect of the present invention provides a method for evaluating the optical performance of a monitoring device, such as Fig.15 As shown:

[0157] S010, the robotic arm places the monitoring device;

[0158] S020, the chart switching device is started and one of the test charts is moved and fixed at a shooting position;

[0159] S030, the multi-party evaluation device identifies the type of the test card and determines whether it is a large card; if so:

[0160] S040, grayscale processing is performed, and the angle and orientation of the multi-party evaluation device are adjusted according to the center position of the test chart;

[0161] S050, adjusting the horizontal position of the multi-party evaluation device according to the left and right appearance areas of the black frame of the test chart;

[0162] S060, adjusting the height and position of the multi-party evaluation device according to the upper and lower appearance areas of the black frame of the test chart;

[0163] S070, if not, detecting whether the edge of the test chart is displayed in the real-time video;

[0164] S080, adjusting the angle, level and height of the multi-party evaluation device until the edge of the test chart is detected and displayed in the real-time video and stops, so that the monitoring device and the center of the chart are on the same horizontal line;

[0165] S090, the fill light device automatically adjusts the fill light illumination and color temperature of the test environment according to the test chart type;

[0166] S100, the monitoring device shoots the test chart in the test environment; after shooting is completed, the multi-party evaluation device rotates once, shoots the second monitoring device, and then jumps to step S030 to continue execution; rotate in sequence until all monitoring devices have completed shooting;

[0167] S110, the image card switching device switches the next test image card for shooting by the monitoring device;

[0168] S120, the multi-party evaluation device identifies the type of the test image card and determines whether to continue shooting. If yes, it jumps to step S030 to continue execution; if not, it jumps to step S020 to continue execution;

[0169] S130, when all the test charts are switched in sequence, the robot arm takes the tested monitoring device and puts it into the tested shelf;

[0170] S140, the master control device determines whether to conduct the next round of monitoring device evaluation. If so, continue to execute according to step S010; if not, end the evaluation and the master control device analyzes the optical performance indicators.

[0171] like Fig.16 As shown, the specific working process of the image card switching device is as follows:

[0172] S011, the image card switching device receives the test instruction and starts;

[0173] S012, the multiple card frames slide forward in sequence, the first card frame slides onto the card feeding mechanism, and at the same time, the second card frame is located at the position of the first card frame, leaving the position of the last card frame empty;

[0174] S013, the card feeding mechanism drives the first image card frame to move downward to a shooting position for shooting;

[0175] S014, after the shooting is completed, the card feeding mechanism moves the first image card frame backward to the rear of the card feeding rack;

[0176] S015, the card feeding mechanism moves the first image card frame upward to the empty position of the last image card frame;

[0177] S016, determining whether to shoot the next test chart, if yes, jumping to step S012 to continue execution, if no, ending the execution.

[0178] During the evaluation process of the present invention, the master control device needs to pre-set the clamping pressure range of the clamp, the movement path of the robot arm, the chart type and its corresponding standard environmental data, the rotating disk and the rotation angle of the cam divider to ensure the operation of the entire system.

[0179] Compared with the prior art, the present invention has the following beneficial effects:

[0180] The present invention can realize the evaluation of different simulated test environments, and can realize the fully automatic and simultaneous optical camera detection of multiple monitoring devices to be tested, thereby improving the test efficiency; while ensuring the accuracy remains unchanged, the work efficiency is further improved to achieve intelligence; during the test process, the problems existing in the traditional camera performance test process, such as the difficulty of operation, the long test cycle, the low degree of intelligence in data sorting, the low work efficiency and the poor credibility, can be effectively solved; at the same time, it has the advantages of low cost and easy operation.

[0181] In the description of the present invention, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0182] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0183] The above is only a preferred implementation of the present invention and is not intended to limit the present invention. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the invention shall be included in the protection scope of the present invention.

Claims

1. A system for evaluating the optical performance of a monitoring device, characterized in that: include: The image card switching device is provided with a plurality of test image cards for sequentially switching the image cards; the image card switching device comprises a hoisting part, an image card rack, a plurality of image card frames, a card feeding rack, and a card feeding mechanism, wherein: The chart frame is fixedly connected to the bottom surface of the hanging part through a bracket, and is composed of a frame body composed of four pillars and a top composed of four cross bars. First tracks are arranged along the cross bars on both sides of the top of the chart frame, and second tracks are arranged on both sides of the bottom; there are multiple chart frames, which are vertically arranged inside the chart frame and slide back and forth along the chart frame. The chart frame includes a frame, and the test chart is installed in the frame; first sliders are arranged on both sides of the top of the frame, and slide back and forth in cooperation with the first track; second sliders are arranged on both sides of the bottom of the frame, and slide back and forth in cooperation with the second track; a first magnet is also arranged above the first track, and the first magnet is controlled by a driving device to slide back and forth along the first track, thereby driving the first slider to move back and forth; the second track is a double track, with an upper The track is used for the sliding of the image card frame, and the lower track is used for the sliding of the card feeding mechanism; the card feeding frame is arranged at the bottom of the image card frame, and is formed by the vertical column of the image card frame extending downward, and the bottom is composed of four cross bars, the cross bars on both sides of the bottom are provided with a third track, the pillars on both sides of the front are provided with a fourth track, and the pillars on both sides of the rear are provided with a fifth track; the card feeding mechanism is slidably installed on the pillar of the card feeding frame, and the two ends thereof connected with the card feeding frame are provided with a third slider, which can slide forward and backward along the second track, slide forward and backward along the third track, slide up and down along the fourth track, and slide up and down along the fifth track. The card feeding mechanism is provided with a supporting groove, and the bottom of the image card frame is sunk into the supporting groove. The card feeding mechanism drives the image card frame to slide, and the card receiving and feeding are realized through the card feeding mechanism; A fill light device is provided with a pair of fill light units, which are symmetrically distributed on both sides in front of the chart switching device, and adjust the light source according to the chart type to provide a corresponding standard test environment; A clamping device is used to clamp the monitoring device to be tested; the monitoring device captures the image card information; A multi-directional control device, with a plurality of the clamping devices arranged above, located between the fill light units, for controlling each monitoring device to be on the same horizontal line with the image card; A robotic arm is used to place and grab the monitoring device, and a placing robotic arm and a grabbing robotic arm are provided; The master control device controls the image card switching device, the fill light device, the clamping device, the multi-directional control device, the mechanical arm and the monitoring device to evaluate the optical indicators.

2. The evaluation system according to claim 1, characterized in that: The clamping device comprises a shearing module, a supporting module and a clamping module; wherein: The shear force module is used to sense the shear force of the placement robot arm placing the monitoring device, and send a placement instruction to the placement robot arm to enable it to continue placing the monitoring device; The support module is used to sense the placement pressure of the monitoring device and send a clamping instruction to the clamping module; at the same time, it sends a release instruction to the placement mechanical arm; the placement mechanical arm releases the monitoring device and performs the next placement operation; The clamping module receives the clamping instruction to clamp the monitoring device and sends the clamping pressure to the master control device; the master control device controls the clamping module to stop according to the judgment of the preset clamping pressure.

3. The evaluation system according to claim 2, characterized in that: The multi-directional control device comprises a scene recognition module, a distance measurement module, a rotation module, a movement module, a lifting module and a control module.

4. The evaluation system according to claim 3, characterized in that: The scene recognition module is used to identify the type of the chart, determine the test scene, and send an angle scheduling instruction and a lifting scheduling instruction to the control module; The distance measuring module measures the distance between the monitoring device and the center of the image card, and sends a horizontal scheduling instruction to the control module; The rotation module receives the angle scheduling instruction and is used for adjusting the angle of the monitoring device; The moving module receives the horizontal scheduling instruction and is used to monitor the forward and backward movement of the shooting device; The lifting module receives the lifting scheduling instruction and is used to monitor the lifting movement of the shooting device; The control module regulates the rotating module, the moving module and the lifting module so that the monitoring device and the center of the picture card are located on the same horizontal line.

5. The evaluation system according to claim 4, characterized in that: The master control device receives a shooting completion signal sent by the monitoring device, and sends a rotation signal to the rotation module to switch between the monitoring devices; The master control device receives a rotation completion signal sent by the rotation module, and sends a picture card switching signal to the picture card switching device to switch the picture card; The master control device receives the rotation completion signal and the image card switching completion signal, and sends a monitoring device replacement signal to the clamping module and the robotic arm to replace the monitoring device.

6. The evaluation system according to claim 1, characterized in that: The fill light device identifies the current chart type and adjusts the light intensity and color temperature according to the preset standard test environment data corresponding to the chart type.

7. The evaluation system according to claim 6, characterized in that: The monitoring device takes pictures in the standard test environment and sends the pictures to the master control device for optical index analysis.

8. A method for evaluating the optical performance of a monitoring device, characterized in that: Using the evaluation system described in any one of claims 1 to 7, the evaluation process is as follows: The robotic arm places the monitoring device; the image card switching device activates one of the test image cards; The multi-party evaluation device identifies the type of the test chart and adjusts the angle, level and height of the multi-party evaluation device; the fill light device automatically adjusts the test environment according to the type of the test chart; The first monitoring device takes a picture of the test chart in the test environment. After the picture is taken, the multi-party evaluation device rotates, and the second monitoring device takes a picture. The two devices rotate in sequence until all monitoring devices have completed the picture taking. The chart switching device switches to the next test chart; the multi-party evaluation device determines whether to take a photo, and if so, repeats the above steps; if not, switches to the next test chart, and repeats the above steps until all test charts are switched; after the evaluation is completed, the master control device analyzes the optical performance indicators.

9. The evaluation method according to claim 8, characterized in that: The adjustment process of the angle, level and height position is as follows: The multi-party evaluation device identifies the type of the test card and determines whether it is a large card; If yes, grayscale processing is performed, and the angle position of the multi-party evaluation device is adjusted according to the center position of the test chart; the horizontal position of the multi-party evaluation device is adjusted according to the left and right appearance areas of the black frame of the test chart; Adjust the height and position of the multi-party evaluation device according to the upper and lower areas where the black border of the test chart appears; If not, adjust the angle, level and height of the multi-party evaluation device until the edge of the test chart is detected and displayed in the real-time video.

10. The evaluation method according to claim 8, characterized in that: The switching process of the test chart is as follows: The chart card switching device receives the test instruction and starts; The first card frame slides onto the card feeding mechanism, and at the same time, the multiple card frames slide forward in sequence, so that the second card frame is located at the position of the first card frame, leaving the position of the last card frame empty; The card feeding mechanism drives the first picture card frame to move downward to the shooting position for shooting and evaluation; After the shooting is completed, the card feeding mechanism moves the first card frame to the empty position of the last card frame; this is done in sequence to complete the switching of all test cards.

Images