CN115753027A - Automatic performance detection system and method for small medical optical product - Google Patents
Automatic performance detection system and method for small medical optical product Download PDFInfo
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Abstract
The invention provides a system and a method for automatically detecting the performance of a small medical optical product, which combines an optical test screen with an image acquisition device and a tested product fixing device, adopts upper computer software to carry out core control, can be used for detecting various optical products and equipment, and can also detect the optical performance of the tested equipment under the condition of lacking manual operation of testers, so that the detection steps and the cost of related optical instruments are greatly reduced, the detection operation and the process are simplified through automatic detection, and the result of the automatic detection is more objective than the result of the manual operation, thereby greatly improving the detection precision.
Description
Technical Field
The invention relates to the technical field of optical performance detection of optical products, in particular to a system and a method for automatically detecting the performance of a small medical optical product.
Background
In recent years, with the development of remote medical treatment and health internet of things, small medical optical products such as an otoscope, a video laryngoscope, a direct ophthalmoscope and a fundus camera are increasingly popularized, and people pay more attention to the safety and effectiveness of the optical products. Small medical optical products, as one type of medical instrument, need to be tested with reference to the standards of the relevant medical instrument.
For the small medical optical products, the optical performance is one of the most critical evaluation indexes, the optical performance detection equipment for the small medical optical products in the market at present has single test item, high price and non-uniform detection standard, the main test method is to use the traditional manual operation, and determine whether the performance of the equipment meets the requirements through the manual observation result, the requirement on the level of an operator is high, the detection process is complicated and complex, and the precision is low.
Therefore, how to further simplify the detection operation and process of optical performance and make the detection parameters more objective is an urgent problem to be solved in the development of the field.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a system and a method for automatically detecting the performance of a small medical optical product, which aim to solve the technical problems of complex detection operation and process of optical performance and low precision caused by manual operation in the prior art.
An automated performance detection system for small medical optical products, comprising: the system comprises an optical test screen, an environment simulation device, a tested product fixing device, an image acquisition device and upper computer software; the optical test screen is fixed in front of the tested product fixing device, the optical test screen is connected with the environment simulation device, the tested product fixing device is connected with the image acquisition device, and the environment simulation device and the image acquisition device are respectively connected with the upper computer software.
In one embodiment, the optical test screen comprises a test lamp box, a comprehensive test card and an electric lifting platform; the comprehensive test card is arranged in the test lamp box, and the test lamp box is installed on the electric lifting platform.
In one embodiment, the environmental simulation apparatus includes a vibration adjuster, a temperature and humidity adjuster, an illumination adjuster, a camera bellows, and an optical shock-proof platform, wherein: the vibration regulator is coupled below the optical test screen, is connected with the upper computer software, and comprises a vibration knob used for performing coarse adjustment and fine adjustment on vibration intensity and vibration frequency; the temperature and humidity regulator is connected with the upper computer software and comprises a heater, a humidifier and a temperature and humidity sensor, wherein the heater is used for receiving a temperature regulation and control instruction transmitted by the upper computer software to regulate the test temperature; the humidifier is used for receiving a humidity regulation and control instruction transmitted by upper computer software to regulate the test humidity; the temperature and humidity sensor is used for transmitting the collected temperature and humidity information to the upper computer software in real time; the illumination adjuster is connected with the upper computer software and comprises an illuminometer and an adjuster, wherein the illuminometer is used for transmitting illumination numerical value information to the upper computer software in real time; the adjuster is used for receiving an illumination adjusting instruction transmitted by the upper computer software to adjust the illumination of the test lamp box; the temperature and humidity regulator and the illumination regulator are placed in the camera bellows; and the optical shockproof platform is used for fixing the camera bellows.
In one embodiment, the device for fixing the tested product comprises a fixing knob and an adjustable fixing clamp, wherein: the adjustable fixing clamp comprises an adjusting rod and a cushion, and the adjusting rod is used for adjusting the position of a product to be measured; and the fixing knob is used for fixing the position of the tested product.
In one embodiment, the image acquisition device comprises a position adjusting component, a laser ranging component and a high-definition camera, wherein: the position adjusting assembly is fixed at the bottom of the camera bellows, is connected with upper computer software, and comprises an adjusting sliding table and a rotary angle adjustable assembly, wherein the adjusting sliding table comprises three degrees of freedom, namely a transverse axis, a longitudinal axis and a vertical axis, and the rotary angle adjustable assembly is arranged in the direction of the longitudinal axis of the adjusting sliding table; the laser ranging assembly is connected with upper computer software and comprises a laser sensor, and the transmitting point of the laser sensor is parallel to the optical test screen; the high-definition camera is installed on the rotary angle-adjustable assembly and connected with the upper computer software.
In one embodiment, the upper computer software comprises a parameter presetting module, a mechanical arm monitoring module, a definition detection module, a performance testing module and a report generating module, wherein: the parameter presetting module is connected with the environment simulation device and comprises a vibration setting unit, a temperature and humidity setting unit and an illumination setting unit; the mechanical arm monitoring module comprises a distance adjusting unit, an image adjusting unit, a motor driving unit and a camera control unit, wherein the distance adjusting unit and the image adjusting unit are respectively connected with the motor driving unit, and the camera control unit is used for controlling a high-definition camera to acquire images; the definition detection module comprises a distance receiving unit, a definition evaluation unit and a result feedback unit, wherein the distance receiving unit and the definition evaluation unit are respectively connected with the result feedback unit; the performance testing module is connected with the mechanical monitoring module and used for testing and analyzing the image transmitted by the camera control unit; the report generation module comprises a basic parameter unit and an optical performance parameter unit, wherein the basic parameter unit is connected with the environment simulation device, and the optical performance parameter unit is connected with the image acquisition device.
In one embodiment, the distance receiving unit comprises a real-time distance receiving subunit and an optimal distance receiving subunit; the real-time distance receiving subunit is used for receiving the linear distance transmitted by the laser ranging component in real time; the definition evaluation unit comprises an image preprocessing subunit and a definition calculating subunit; the image preprocessing subunit is used for preprocessing the original image acquired by the image acquisition module to obtain an image to be detected; the definition calculating operator unit is used for calculating the definition of the image to be measured based on a definition evaluation algorithm to obtain the definition of the image to be measured; and the result feedback unit is used for sequencing the definitions output by the definition calculating subunit to obtain the optimal definition and the corresponding optimal distance information, and transmitting the distance information to the image acquisition device for adjusting the working distance.
An automatic performance detection method for a small medical optical product comprises the following steps: fixing the tested product on the tested product fixing device, and acquiring image information of the tested product by using an image acquisition device and transmitting the image information to upper computer software; the upper computer software controls the image acquisition device based on the image information to complete the primary adjustment of the image position; the upper computer software evaluates the received image information after the initial adjustment to obtain a definition score and an image optimal position, and further controls the image acquisition device to finish the accurate adjustment of the image position; and the image acquisition device transmits the precisely adjusted optimal image information to the upper computer software for performance test, and generates and outputs a detection report according to the test result.
In one embodiment, the upper computer software controls the image acquisition device based on the image information to complete the preliminary adjustment step of the image position, including: acquiring the linear distance between a test chart in the optical test screen and a lens of a tested product, and the position information and the image information of the current tested product; adjusting at least one of a position adjusting assembly and an electric lifting platform according to the linear distance, the position information and the image information to enable the test chart, the lens of the tested product and the lens of the high-definition camera to be in the same level; and adjusting at least one of the high-definition camera and the illumination adjuster according to the image information, so that the image displayed by the lens of the high-definition camera is consistent with the image of the lens of the tested product.
In one embodiment, the upper computer software evaluates the received image information acquired by the image acquisition device after preliminary adjustment to obtain a definition score and an image best position, controls the image acquisition device based on the definition score and the image best position, and completes the precise adjustment of the image position, and the method comprises the following steps: acquiring real-time position information of an image transmitted by an image acquisition device and preprocessing the image to obtain an image to be evaluated; calculating and evaluating the image to be evaluated by adopting a definition evaluation algorithm to obtain and store the optimal definition and the corresponding optimal position information; and transmitting the optimal position information to the mechanical arm monitoring module, and automatically controlling the position adjusting assembly by the mechanical arm monitoring module so that the image displayed by the lens of the high-definition camera is in the clearest state.
According to the technical scheme, the beneficial technical effects of the invention are as follows:
1. this scheme is through with optics test screen and image acquisition device, by survey product fixing device combination, adopt host computer software to carry out core control, can be used to detect multiple optics product and equipment, also can carry out the detection of being surveyed equipment optical property under the condition that lacks the tester and carry out manual operation, make relevant optical instrument testing procedure and expense significantly reduce, through automated inspection, thereby realize the simplification of detect operation and process, and automated inspection's result is far more objective than manual operation, thereby very big improvement the precision that detects.
2. According to the scheme, on one hand, the image acquisition device is controlled through the upper computer software based on image information to realize the preliminary adjustment of the image position, on the other hand, the definition of the image is detected and evaluated by adopting a definition evaluation algorithm, and after the optimal position is found, the image acquisition device is controlled through the upper computer software to realize the accurate adjustment of the image position, so that the integration and the automation of optical product testing are realized.
3. According to the scheme, the detection result is analyzed through the performance testing module in the upper computer software, the detection report is generated in the report generating module according to the analysis result, and the detection result is visually displayed, so that the time and the energy of a tester are saved, the method and the device can be suitable for large-batch testing work, and the testing efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a block diagram of an embodiment of an automated performance inspection system for compact medical optical products;
FIG. 2 is a block diagram of an optical test screen in one embodiment;
FIG. 3 is a block diagram showing the configuration of an environment simulation apparatus according to an embodiment;
FIG. 4 is a schematic structural view of a fixing device for a product under test according to an embodiment;
FIG. 5 is a schematic diagram showing the structure of an image capturing apparatus according to an embodiment;
FIG. 6 is a block diagram of upper computer software in one embodiment.
FIG. 7 is a diagram of a robot monitoring module in the host computer software according to an embodiment.
FIG. 8 is a block diagram of the sharpness detection module of the host computer software in an embodiment.
FIG. 9 is a schematic flow chart illustrating a method for automatically testing the performance of a compact medical optical product according to one embodiment;
FIG. 10 is a schematic flowchart of step S2 in FIG. 9;
fig. 11 is a schematic flow chart of step S3 in fig. 9.
Reference numerals:
310-a fixed knob, 320-an adjustable fixed clamp, 321-an adjusting rod and 322-a soft pad; 410-position adjusting assembly, 411-adjusting sliding table, 412-rotary angle adjustable assembly, 420-laser ranging assembly and 430-high definition camera.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In one embodiment, as shown in FIG. 1, a compact medical optical product automated performance inspection system is provided. The system comprises an optical test screen (100), an environment simulation device (200), a tested product fixing device (300), an image acquisition device (400) and upper computer software (500), wherein the optical test screen (100) is fixed in front of the tested product fixing device (300), the tested product fixing device (300) is connected with the image acquisition device (400), and the environment simulation device (200) and the image acquisition device (400) are controlled and adjusted by the upper computer software (500).
Specifically, as shown in fig. 2, the optical test screen (100) includes a test lamp box (110), a comprehensive test card (120) and an electric lifting table (130), the comprehensive test card (100) is installed in the test lamp box (110), and the test lamp box (110) is fixed on the electric lifting table (130); the comprehensive test card (120) is indirectly moved by controlling the height of the electric lifting table (130) so as to adapt to the requirements of different test products.
The detection parameters of the comprehensive test card (100) comprise basic items and enhancement items, the basic items comprise one or more of image quality test, illumination test, field angle and depth of field, and the enhancement items comprise one or more of color rendering index, viewing direction angle, illumination performance and distortion consistency. The test system can simultaneously detect various optical performance parameters including image quality, illumination, field angle, field depth and the like, and visualize the test result; meanwhile, the system has a detection result analysis function, and the analysis result can generate a detection report, so that the time and the energy of a tester are saved, and the system is more suitable for large-batch test work.
In one embodiment, as shown in FIG. 3, the environmental simulator (200) includes a vibration adjuster (210), a temperature and humidity adjuster (220), an illumination adjuster (230), an optical shock mount (240), and a dark box (250).
The vibration adjustor (210) is coupled below the optical test screen (100) and connected with the upper computer software (500), and comprises a vibration knob, wherein the vibration adjustor can roughly adjust the vibration intensity and the vibration frequency and finely adjust the vibration intensity and the vibration frequency by receiving an adjusting instruction sent by the upper computer software (500).
The temperature and humidity regulator (220) is connected with upper computer software (500) and comprises a temperature and humidity sensor (221), a heater (222) and a humidifier (223). The heater (222) receives a temperature regulation and control instruction transmitted by the upper computer software (500) to regulate the test temperature, the humidifier (223) receives a humidity regulation and control instruction transmitted by the upper computer software (500) to regulate the test humidity, and the temperature and humidity sensor (221) transmits collected temperature and humidity information to the upper computer software (500) in real time;
the illuminance adjuster (230) comprises an illuminance meter (231) and an adjuster (232) and is connected with the upper computer software (500), the illuminance meter (231) transmits the illuminance numerical value information to the upper computer software in real time, and the adjuster (232) receives an illuminance adjusting instruction transmitted by the upper computer software to adjust the illuminance of the test lamp box.
The camera bellows (250) is fixed on the optical shockproof platform (240), and the temperature and humidity regulator (220) and the illumination regulator (230) are both arranged in the camera bellows (250).
In one embodiment, as shown in fig. 4, the device for fixing a product to be tested (300) comprises a fixing knob (310), and an adjustable fixing clip (320) consisting of an adjusting rod (321) and a cushion (322), wherein the fixing knob (310) is used for fixing the position of the product to be tested. Specifically, the distance between the adjustable fixing clamps (320) is quickly increased or reduced through the adjusting fixing knobs (310), the position of the product to be measured is finely adjusted through the adjusting rods (321), and the friction force between the adjustable fixing clamps (320) and the product to be measured can be increased through the soft pads (322), so that the product to be measured is more stable.
In one embodiment, as shown in fig. 5, the image capture device (400) includes a position adjustment assembly (410), a laser range finding assembly (420), and a high definition camera (430). The position adjusting assembly (410) is fixed at the bottom of the camera bellows (250), comprises an adjusting sliding table (411) and a rotary angle adjustable assembly (412), is connected with upper computer software (500), and the adjusting sliding table (411) comprises three degrees of freedom, namely a transverse axis, a longitudinal axis and a vertical axis, and the upper computer software (500) sends a control command to adjust the distance between a tested product and the optical test screen and also adjust the distance between the tested product and the high-definition camera; the rotary angle-adjustable component (412) is arranged in the longitudinal axis direction of the adjusting sliding table (411), and the upper computer software (500) sends a control instruction to adjust the angle of the high-definition camera (430);
the laser ranging assembly (420) comprises a laser sensor and is connected with the upper computer software (500), the emitting point of the laser sensor is flush with the lens of the product to be tested and is parallel to the optical test screen, the laser ranging assembly (420) is used for determining the position of an acquired image and detecting the linear distance between a test chart in the optical test screen and the lens of the product to be tested, and the linear distance data is transmitted to the upper computer software (500) in real time;
the bottom of the high-definition camera (430) is installed on the rotary angle-adjustable component (412) and connected with the upper computer software (500), and the high-definition camera (430) collects image information from a screen of a tested product and uploads the image information to the upper computer software (500) in real time.
Specifically, as shown in fig. 5, the position adjusting assembly (410) may select a three-dimensional rail platform as the adjusting sliding table (411), and the rotary angle adjustable assembly (412) is installed in the longitudinal axis direction of the adjusting sliding table (411); the high-definition camera (430) is fixed on the rotary angle-adjustable component (412), and the laser ranging component (420) is installed on the fixed device (300) of the product to be measured and is in the same plane with the high-definition camera (430).
In one embodiment, as shown in fig. 6, 7 and 8, the host computer software (500) includes a parameter presetting module (510), a robot arm monitoring module (520), a sharpness detecting module (530), a performance testing module (540), and a report generating module (550).
The environment simulation system comprises a parameter presetting module (510), a vibration setting unit (511), a temperature and humidity setting unit (512) and an illumination setting unit (513), wherein the parameter presetting module is connected with the environment simulation device (200) and is used for setting the environment simulation device (200); the vibration setting unit (511) sends the preset vibration parameters to the vibration regulator (210) to realize the regulation of the vibration parameters; the temperature and humidity setting unit (512) sends preset temperature and humidity parameters to the temperature and humidity regulator (220) to realize temperature and humidity regulation; the illuminance setting unit (513) sends the preset illuminance parameter to the illuminance regulator (230) to realize the regulation of the illuminance.
The mechanical arm monitoring module (520) is composed of a distance adjusting unit (521), an image adjusting unit (522), a motor driving unit (523) and a camera control unit (524), the distance adjusting unit (521) and the image adjusting unit (522) are respectively connected with the motor driving unit (523), the distance adjusting unit (521) transmits preset distance information to the motor driving unit (523), and the motor driving unit (523) generates a motor driving instruction and a distance adjusting instruction to control a position adjusting component so as to realize adjustment of working distance; the image adjusting unit (522) transmits preset position information to the motor driving unit (523), and the motor driving unit (523) generates a motor driving instruction and an azimuth adjusting instruction to control the position adjusting component to realize the adjustment of the image position; the high-definition camera is controlled through a camera control unit (524), and the acquisition of images is realized.
The definition detection module (530) comprises a distance receiving unit (531), a definition evaluation unit (533) and a result feedback unit (532), wherein the distance receiving unit (531) and the definition evaluation unit (533) are respectively connected with the result feedback unit (532). The distance receiving unit (531) comprises a real-time distance receiving subunit (531A) and an optimal distance receiving subunit (531B), and the real-time distance receiving subunit (531A) receives the linear distance transmitted by the laser ranging component (420) in real time; the definition evaluation unit (533) comprises an image preprocessing subunit (533A) and a definition calculating subunit (533B), the image preprocessing subunit (533A) preprocesses the original image acquired by the image acquisition device (400) to obtain an image to be detected, and the definition calculating subunit (533B) calculates the definition of the image to be detected by using a definition evaluation algorithm to obtain the definition of the image to be detected; the result feedback unit (532) sequences the definitions output by the definition calculating subunit (533B) to obtain the optimal definition and the corresponding optimal distance information, and transmits the distance information to the position adjusting component (410) to adjust the working distance.
And the performance testing module (540) is connected with the mechanical monitoring module (520) and is used for testing and analyzing the image transmitted by the camera control unit (524).
The report generation module (550) comprises a basic parameter unit (551) and an optical performance parameter unit (552); the basic parameter unit (551) is connected with the environment simulation device (200), and the optical performance parameter unit (552) is connected with the image acquisition device (400). A basic parameter unit (551) receives simulation parameter information from an environment simulation module and distance information from a distance measurement module; the optical performance parameter unit (552) receives the image information acquired by the image acquisition module and analyzes the image information and the performance test module to obtain a detection result; the report generating module (550) is internally provided with a plurality of types of report templates, the report templates generate corresponding types of test reports according to the simulation parameter information, the distance information, the image information and the detection result, and a multi-format report downloading function is provided so as to meet diversified report requirements of users.
Specifically, the parameter presetting module (510) comprises a vibration setting unit (511), a temperature and humidity setting unit (512) and an illumination setting unit (513), and can set the environment simulation device (200); the mechanical arm monitoring module (520) consists of a distance adjusting unit (521), an image adjusting unit (522), a motor driving unit (523) and a camera control unit (524), can monitor the state of the position adjusting component (410), and is matched with the definition detection module (530) to realize the adjustment of the position of a detected product and a camera and control the high-definition camera (430) to carry out image acquisition operation; the performance testing module (540) analyzes the acquired image and outputs a test report through the report generating module (550).
In one embodiment, as shown in fig. 9, there is provided a method for automatic performance testing of small medical optical products, comprising the steps of:
s1, fixing a tested product on a tested product fixing device, and acquiring image information of the tested product by using an image acquisition device and transmitting the image information to upper computer software;
s2, controlling the image acquisition device by upper computer software based on the image information to finish the primary adjustment of the image position;
s3, the upper computer software evaluates the received image information after the initial adjustment to obtain a definition score and an image optimal position, and further controls the image acquisition device to finish the accurate adjustment of the image position;
and S4, the image acquisition device transmits the precisely adjusted optimal image information to the upper computer software for performance test, and generates and outputs a detection report according to a test result.
Specifically, a tested product is fixed on a tested product fixing device (300), and an image acquisition device (400) acquires image information of the tested product and transmits the image information to upper computer software (500); according to the position information and the image information, the mechanical arm monitoring module (520) controls the image acquisition device (400) to realize the primary adjustment of the image position; the preliminarily adjusted image information is evaluated by a definition detection module (530) to obtain a definition score and an optimal image position, and the definition score and the optimal image position are fed back to a mechanical arm monitoring module (520), so that the accurate adjustment of the image position is realized; the camera control unit (524) acquires and stores the precisely adjusted optimal image, and the performance test module (540) analyzes the optimal image to obtain a test result and generate a detection report.
In one embodiment, as shown in fig. 10, step S2 includes: s21, acquiring the linear distance between a test chart in the optical test screen and a lens of a tested product, and the position information and the image information of the current tested product; s22, adjusting at least one of the position adjusting assembly and the electric lifting platform according to the linear distance, the position information and the image information, so that the test chart, the lens of the tested product and the lens of the high-definition camera are in the same level; and S23, adjusting at least one of the high-definition camera and the illuminance adjuster according to the image information, so that the image displayed by the lens of the high-definition camera is consistent with the image of the lens of the tested product.
Specifically, the linear distance between a test chart in an optical test screen (100) and a lens of a tested product, and the position information and the image information of the current tested product are obtained; adjusting the position adjusting assembly (410) and/or the electric lifting platform (130) according to the linear distance, the position information and the image information, so that the test chart, the lens of the product to be tested and the lens of the high-definition camera (430) are at the same level; and adjusting the lens of the high-definition camera (430) and/or the illumination adjuster (230) according to the image information, so that the image displayed by the lens of the high-definition camera (430) is consistent with the image of the lens of the tested product.
In one embodiment, as shown in fig. 11, step S3 includes: s31, acquiring real-time position information of an image transmitted by an image acquisition device and preprocessing the image to obtain an image to be evaluated; s32, calculating and evaluating the image to be evaluated by adopting a definition evaluation algorithm to obtain and store the optimal definition and the corresponding optimal position information; s33, transmitting the optimal position information to the mechanical arm monitoring module, and automatically controlling the position adjusting assembly by the mechanical arm monitoring module to enable the image displayed by the lens of the high-definition camera to be in the clearest state.
Specifically, real-time position information of an image transmitted by image acquisition equipment (400) is acquired and the image is preprocessed to obtain an image to be evaluated; calculating and evaluating the image to be evaluated by adopting a definition evaluation algorithm to obtain and store the optimal definition and the corresponding optimal position information; the optimal position information is transmitted to the mechanical arm monitoring module (520), and the mechanical arm monitoring module (520) automatically controls the position adjusting assembly, so that the image displayed by the lens of the high-definition camera (430) is in the clearest state.
In an embodiment, taking a resolution test as an example, the workflow of the above embodiment is described in detail:
installing a tested product on the tested product fixing device (300), and adjusting the electric lifting table (130) to enable the center of the comprehensive test card (120) and the lens of the tested product to be at the same height;
establishing communication between an environment simulation device (200) and an image acquisition device (400) and upper computer software (500) to complete preparation work before system testing;
setting vibration parameters, temperature and humidity parameters and illumination parameters through a parameter presetting module (510) and sending the vibration parameters, the temperature and humidity parameters and the illumination parameters to an environment simulation device (200) to complete the construction of a test environment;
the mechanical arm monitoring module (520) receives image information transmitted by the high-definition camera (430) and distance information transmitted by the laser ranging assembly (420), and calls the definition detection module (530) to judge the definition of the image;
if the imaging quality and effect do not meet the preset requirements, a motor driving unit (523) is started, a position adjusting component (410) and a high-definition camera (430) are adjusted through a distance adjusting unit (521) and an image adjusting unit (522), and a definition detecting module (530) is called to judge and evaluate the definition;
if the imaging quality and effect meet the preset requirements, the high-definition camera (430) is controlled through the camera control unit (524) to realize the acquisition of the image;
filling basic information such as a tested product name, a production unit, a submission unit, a prototype image and the like in a performance testing module (540), selecting a resolution testing item to analyze a target image, and obtaining parameter results such as edge transition pixel number, a sharpening degree index, resolution, transverse chromatic aberration and the like;
the report generation module (550) generates a corresponding type of test report from simulation parameter information from the environment simulation module (200), distance information of the laser ranging assembly (420), image information collected by the camera control unit (524), and a detection result analyzed by the performance test module (540), and provides a report printing function.
The test system provided by the embodiment can also be used for illumination test, gray scale test and distortion test, and the test flow is similar to the resolution test.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented in a general purpose computing device, they may be centralized in a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented in program code executable by a computing device, such that they may be stored on a computer storage medium (ROM/RAM, magnetic disk, optical disk) for execution by a computing device, and in some cases, the steps shown or described may be performed in an order different from that described herein, or they may be separately fabricated as individual integrated circuit modules, or multiple ones of them may be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. An automated performance inspection system for small medical optical products, comprising: the system comprises an optical test screen, an environment simulation device, a tested product fixing device, an image acquisition device and upper computer software;
the optical test screen is fixed in front of the tested product fixing device, the optical test screen is connected with the environment simulation device, the tested product fixing device is connected with the image acquisition device, and the environment simulation device and the image acquisition device are respectively connected with the upper computer software.
2. The system of claim 1, wherein the optical test panel comprises a test light box, an integrated test card, and a motorized lift table;
the comprehensive test card is arranged in the test lamp box, and the test lamp box is installed on the electric lifting table.
3. The system of claim 1, wherein the environmental simulator comprises a vibration conditioner, a temperature and humidity conditioner, an illumination conditioner, a camera bellows, and an optical shock platform, wherein:
the vibration regulator is coupled below the optical test screen, is connected with the upper computer software, and comprises a vibration knob used for performing coarse adjustment and fine adjustment on vibration intensity and vibration frequency;
the temperature and humidity regulator is connected with the upper computer software and comprises a heater, a humidifier and a temperature and humidity sensor, wherein the heater is used for receiving a temperature regulation and control instruction transmitted by the upper computer software to regulate the test temperature; the humidifier is used for receiving a humidity regulation and control instruction transmitted by the upper computer software to regulate the test humidity; the temperature and humidity sensor is used for transmitting the collected temperature and humidity information to the upper computer software in real time;
the illuminance regulator is connected with the upper computer software and comprises an illuminometer and a regulator, wherein the illuminometer is used for transmitting the illuminance numerical value information to the upper computer software in real time; the adjuster is used for receiving an illumination adjusting instruction transmitted by the upper computer software to adjust the illumination of the test lamp box;
the temperature and humidity regulator and the illumination regulator are placed in the camera bellows;
and the optical shockproof platform is used for fixing the camera bellows.
4. The system of claim 1, wherein the device under test fixture comprises a fixture knob, an adjustable fixture clamp, wherein:
the adjustable fixing clamp comprises an adjusting rod and a cushion, and the adjusting rod is used for adjusting the position of a tested product;
and the fixing knob is used for fixing the position of the tested product.
5. The system of claim 1, wherein the image capture device comprises a position adjustment assembly, a laser ranging assembly, and a high definition camera, wherein:
the position adjusting assembly is fixed at the bottom of the camera bellows, is connected with upper computer software, and comprises an adjusting sliding table and a rotary angle adjustable assembly, wherein the adjusting sliding table comprises three degrees of freedom, namely a transverse axis, a longitudinal axis and a vertical axis, and the rotary angle adjustable assembly is arranged in the direction of the longitudinal axis of the adjusting sliding table;
the laser ranging assembly is connected with upper computer software and comprises a laser sensor, and the transmitting point of the laser sensor is parallel to the optical test screen;
the high-definition camera is arranged on the rotary angle-adjustable component and connected with the upper computer software.
6. The system of claim 1, wherein the upper computer software comprises a parameter presetting module, a mechanical arm monitoring module, a definition detection module, a performance testing module and a report generating module, wherein:
the parameter presetting module is connected with the environment simulation device and comprises a vibration setting unit, a temperature and humidity setting unit and an illumination setting unit;
the mechanical arm monitoring module comprises a distance adjusting unit, an image adjusting unit, a motor driving unit and a camera control unit, wherein the distance adjusting unit and the image adjusting unit are respectively connected with the motor driving unit, and the camera control unit is used for controlling a high-definition camera to acquire images;
the definition detection module comprises a distance receiving unit, a definition evaluation unit and a result feedback unit, wherein the distance receiving unit and the definition evaluation unit are respectively connected with the result feedback unit;
the performance testing module is connected with the mechanical monitoring module and used for testing and analyzing the image transmitted by the camera control unit;
the report generation module comprises a basic parameter unit and an optical performance parameter unit, the basic parameter unit is connected with the environment simulation device, and the optical performance parameter unit is connected with the image acquisition device.
7. The system of claim 6, wherein the range receiving unit comprises a real-time range receiving subunit and an optimal range receiving subunit; the real-time distance receiving subunit is used for receiving the linear distance transmitted by the laser ranging component in real time;
the definition evaluation unit comprises an image preprocessing subunit and a definition calculating subunit; the image preprocessing subunit is used for preprocessing the original image acquired by the image acquisition module to obtain an image to be detected; the definition calculating operator unit is used for calculating the definition of the image to be measured based on a definition evaluation algorithm to obtain the definition of the image to be measured;
and the result feedback unit is used for sequencing the definitions output by the definition calculating subunit to obtain the optimal definition and the corresponding optimal distance information, and transmitting the distance information to the image acquisition device for adjusting the working distance.
8. An automatic performance detection method for a small medical optical product is characterized by comprising the following steps:
fixing a tested product on a tested product fixing device, and acquiring image information of the tested product by using an image acquisition device and transmitting the image information to upper computer software;
the upper computer software controls the image acquisition device based on the image information to complete the primary adjustment of the image position;
the upper computer software evaluates the received image information after the initial adjustment to obtain a definition score and an image optimal position, and further controls the image acquisition device to finish the accurate adjustment of the image position;
and the image acquisition device transmits the precisely adjusted optimal image information to the upper computer software for performance test, and generates and outputs a detection report according to the test result.
9. The method according to claim 8, wherein the upper computer software controls the image acquisition device based on the image information to perform the preliminary image position adjustment step, comprising:
acquiring the linear distance between a test chart in the optical test screen and a lens of a tested product, and the position information and the image information of the current tested product;
adjusting at least one of a position adjusting assembly and an electric lifting platform according to the linear distance, the position information and the image information to enable a test chart, a lens of a tested product and a lens of a high-definition camera to be in the same level;
and adjusting at least one of the high-definition camera and the illumination adjuster according to the image information, so that the image displayed by the lens of the high-definition camera is consistent with the image of the lens of the tested product.
10. The method according to claim 8, wherein the upper computer software evaluates the received preliminarily adjusted image information acquired by the image acquisition device to obtain a sharpness score and an image best position, and controls the image acquisition device based on the sharpness score and the image best position to complete the precise adjustment of the image position, comprising:
acquiring real-time position information of an image transmitted by an image acquisition device and preprocessing the image to obtain an image to be evaluated;
calculating and evaluating the image to be evaluated by adopting a definition evaluation algorithm to obtain and store the optimal definition and the corresponding optimal position information;
and transmitting the optimal position information to the mechanical arm monitoring module, and automatically controlling the position adjusting assembly by the mechanical arm monitoring module so that the image displayed by the lens of the high-definition camera is in the clearest state.
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| CN116886889A (en) * | 2023-08-01 | 2023-10-13 | 无锡维凯科技有限公司 | Camera focusing detection device |
| CN116886889B (en) * | 2023-08-01 | 2024-03-15 | 无锡维凯科技有限公司 | Camera focusing detection device |
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