CN213880334U - Brightness self-adjusting device of light source - Google Patents
Brightness self-adjusting device of light source Download PDFInfo
- Publication number
- CN213880334U CN213880334U CN202022649513.9U CN202022649513U CN213880334U CN 213880334 U CN213880334 U CN 213880334U CN 202022649513 U CN202022649513 U CN 202022649513U CN 213880334 U CN213880334 U CN 213880334U
- Authority
- CN
- China
- Prior art keywords
- light source
- pin
- module
- brightness
- led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The application relates to a brightness self-adjusting device of a light source, which relates to the technical field of visual defect detection and comprises a light source module, a brightness acquisition module, an upper computer and a light source control module; the brightness acquisition module is embedded in the light source module or arranged in a light-transmitting area of the light source module, the output end of the brightness acquisition module is connected with the input end of the upper computer, the output end of the upper computer is connected with the input end of the light source control module, and the output end of the light source control module is connected with the light source module. The illumination intensity of the light source module is continuously collected by the brightness acquisition module and sent to the upper computer, the upper computer and the light source control box are continuously matched to perform brightness compensation, the optimal imaging state of the optical imaging system is adjusted until the illumination intensity of the light source module, manual intervention is not needed in the application, the adjustment of the brightness of the light source can be automatically completed, the labor cost is reduced, and a stable and sufficient light source can be provided to create an excellent imaging environment for the optical imaging system.
Description
Technical Field
The application relates to the technical field of visual defect detection, in particular to a brightness self-adjusting device of a light source.
Background
Visual defect detection is the use of industrial cameras instead of the human eye to perform functions such as identification, measurement, and the like. The defect visual inspection machine can effectively improve the inspection speed and the precision of the production line, greatly improve the production and the quality, reduce the labor cost and prevent the misjudgment caused by the eye fatigue.
The visual defect inspection machine is a combination of a camera, a lens and a light source, wherein the light source plays a rather important role, and the light source with stable brightness can provide a proper imaging environment for the camera to take pictures. However, as time goes on, light attenuation inevitably occurs in the LED light source, and the luminance is not enough during illumination and cannot provide sufficient luminance for camera photographing, which brings great challenges to stable imaging of the camera and influences the defect detection industry that relies on stable imaging of the camera.
In the prior art, the change of the brightness of the light source is usually judged by manpower and then manually controlled and adjusted, but the problems of large observation error and inaccurate adjustment exist, the brightness attenuation of the LED light source is light decay caused by long service time, the brightness attenuation degree is very slow, and the generated brightness change is very small, so that the brightness is not easily recognized by human eyes, and the manual control and adjustment are impossible.
SUMMERY OF THE UTILITY MODEL
The application provides a luminance self-adjusting device of light source can carry out automatic identification and brightness control to the luminance decay problem that causes by LED light source self light decay.
The technical scheme adopted by the application is as follows:
a brightness self-adjusting device of a light source comprises a light source module, a brightness acquisition module, an upper computer and a light source control module; the brightness acquisition module is embedded in the light source module or arranged in a light transmission area of the light source module, the output end of the brightness acquisition module is connected with the input end of the upper computer, the output end of the upper computer is connected with the input end of the light source control module, and the output end of the light source control module is connected with the light source module.
Further, the system also comprises an optical imaging system, wherein the upper computer is connected with the optical imaging system, and the optical imaging system comprises a camera and an imaging module.
Further, the light source module includes the lamp body and sets up the LED light source in the lamp body, the LED light source comprises at least one LED lamp pearl.
Furthermore, the brightness acquisition module is embedded in the side surface of the lamp body, the side of the lamp body close to the backlight surface of the LED light source or the side of the lamp body close to the light emitting surface of the LED light source.
Further, the brightness acquisition module comprises a brightness sensor.
Further, the light source module includes the lamp body and sets up LED module in the lamp body, the LED module includes the LED light source, the LED light source comprises at least one LED lamp pearl.
Further, the LED driving power supply circuit includes: a control chip, an input circuit, a current regulating circuit, a voltage regulating circuit, an output circuit and an open circuit detection circuit, wherein,
the control chip comprises an LT3755 chip, and the control chip comprises a Vin pin, a CTRL pin, an FB pin, an ISP pin, an ISN pin, an OPRNLED pin, a SENSE pin and a GATE pin;
the input circuit is electrically connected with the Vin pin and is used for injecting a power supply signal into the Vin pin;
the output circuit comprises a sampling resistor, one end of the sampling resistor is electrically connected with the ISP pin, the other end of the sampling resistor is electrically connected with the ISN pin, and the sampling resistor is used for outputting an electric energy signal to the LED module;
the voltage regulating circuit comprises a resistor R53 and a resistor R52, one end of the resistor R53 is electrically connected with the input circuit, the other end of the resistor R53 is electrically connected with the FB pin, one end of the resistor R52 is electrically connected with the FB pin, and the other end of the resistor R52 is grounded;
one end of the LED switch circuit is connected to the input circuit, and the other end of the LED switch circuit is electrically connected with the SENSE pin and the GATE pin;
the current regulating circuit is electrically connected with a CTRL pin and used for inputting a changed voltage signal to the CTRL pin;
the open circuit detection circuit is electrically connected with an OPRNLED pin.
The technical scheme of the application has the following beneficial effects:
the utility model provides a luminance self-interacting device of light source, the illumination intensity of constantly collecting the light source module by luminance collection module sends for the host computer, the host computer constantly cooperates with the light source control box and carries out luminance compensation, adjust the best imaging state of optical imaging system until the luminance value of light source module, this application need not artificial intervention, can independently accomplish the regulation to light source luminance, the cost of labor has been reduced, can provide stable sufficient light source and build excellent imaging environment for optical imaging system.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a brightness self-adjusting device of a light source.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.
Referring to fig. 1, a schematic diagram of a brightness self-adjusting device of a light source is shown.
LED light source particles suffer from brightness degradation problems with increasing lifetime. The application provides a luminance self-adjustment device of light source is applied to the visual defect detection field, can detect and carry out automatically regulated to the luminance change of LED light source. The brightness self-adjusting device of the light source comprises a light source module, a brightness acquisition module, an upper computer and a light source control module.
Specifically, the method comprises the following steps: in the luminance self-adjusting device of this application light source, the embedding of luminance collection module is installed in light source module or is set up in light source module's logical light zone, and the input of host computer is connected to luminance collection module's output, and the input of light source control module is connected to the output of host computer, and light source module is connected to light source control module's output.
The upper computer is preset with an illumination intensity threshold.
The light source module comprises a lamp body and an LED module arranged in the lamp body, the LED module comprises an LED light source, and the LED light source is composed of at least one LED lamp bead.
The brightness acquisition module is used for acquiring the current illumination intensity of the LED light source, so that the brightness acquisition module can be embedded in the light source module or arranged in an illumination area of the light source module. The illumination area of the light source module is an effective illumination area of the LED light source. The brightness acquisition module can also be specifically arranged on the side surface of the lamp body, the side of the lamp body close to the backlight surface of the LED light source or the side of the lamp body close to the light emitting surface of the LED light source.
The system also comprises an optical imaging system, the upper computer is connected with the optical imaging system to acquire and display images, and the optical imaging system comprises a camera and an imaging module. The optical imaging system performs imaging through photographing and feeds back the imaging state of the camera so as to verify the brightness adjusting effect of the LED light source reversely.
The light source control module comprises an LED driving power circuit, and the LED driving power circuit is used for adjusting the power supply current of the LED light source. The LED driving power supply circuit includes: a control chip, an input circuit, a current regulating circuit, a voltage regulating circuit, an output circuit and an open circuit detection circuit, wherein,
the control chip comprises an LT3755 chip, and the control chip comprises a Vin pin, a CTRL pin, an FB pin, an ISP pin, an ISN pin, an OPRNLED pin, a SENSE pin and a GATE pin;
the input circuit is electrically connected with the Vin pin and is used for injecting a power supply signal into the Vin pin;
the output circuit comprises a sampling resistor, one end of the sampling resistor is electrically connected with the ISP pin, the other end of the sampling resistor is electrically connected with the ISN pin, and the sampling resistor is used for outputting an electric energy signal to the LED module;
the voltage regulating circuit comprises a resistor R53 and a resistor R52, one end of the resistor R53 is electrically connected with the input circuit, the other end of the resistor R53 is electrically connected with the FB pin, one end of the resistor R52 is electrically connected with the FB pin, and the other end of the resistor R52 is grounded;
one end of the LED switch circuit is connected with the input circuit, and the other end of the LED switch circuit is electrically connected with the SENSE pin and the GATE pin;
the current regulating circuit is electrically connected with the CTRL pin and is used for inputting a variable voltage signal to the CTRL pin;
the open circuit detection circuit is electrically connected with the OPRNLED pin.
The application process of the brightness self-adjusting device of the light source comprises the following steps:
and the brightness sensor is embedded into the light source module or arranged in a light transmission area of the light source module, so that the illumination intensity condition of the LED light source is monitored in real time, and the illumination intensity information is sent to the upper computer.
The upper computer receives the illumination intensity signal and compares the illumination intensity signal with an illumination intensity threshold value preset in advance: when the illumination intensity is greater than the illumination intensity threshold value, the upper computer does not send an instruction, and the LED light source maintains the current brightness; when the illumination intensity is smaller than or equal to the illumination intensity threshold value, the upper computer sends a brightness compensation instruction to the light source control module, and the light source control module compensates the brightness of the LED light source by adjusting the power supply current of the LED light source. In the brightness adjusting process of the LED light source, the brightness sensor continuously collects the illumination intensity and sends the illumination intensity to the upper computer, the upper computer is continuously matched with the light source control module to perform brightness compensation, and the optical imaging system performs imaging through image shooting and feeds back the imaging state until the brightness value of the LED light source is adjusted to the optimal imaging state of the optical imaging system.
The brightness self-adjusting device of the light source does not need manual intervention, can automatically adjust the brightness of the LED light source, reduces labor cost, and can provide a stable and sufficient light source to create an excellent imaging environment for an optical imaging system.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (7)
1. The device for automatically adjusting the brightness of the light source is characterized by comprising a light source module, a brightness acquisition module, an upper computer and a light source control module; the brightness acquisition module is embedded in the light source module or arranged in an illumination area of the light source module, the output end of the brightness acquisition module is connected with the input end of the upper computer, the output end of the upper computer is connected with the input end of the light source control module, and the output end of the light source control module is connected with the light source module.
2. The apparatus of claim 1, further comprising an optical imaging system, wherein the host computer is connected to the optical imaging system, and the optical imaging system comprises a camera and an imaging module.
3. The apparatus of claim 1, wherein the light source module comprises a lamp body and an LED module disposed in the lamp body, the LED module comprises an LED light source, and the LED light source comprises at least one LED lamp bead.
4. The apparatus of claim 3, wherein the brightness collecting module is embedded in a side surface of the lamp body, a side of the lamp body near a backlight surface of the LED light source, or a side of the lamp body near a light emitting surface of the LED light source.
5. The apparatus of any one of claims 1 to 4, wherein the brightness acquisition module comprises a brightness sensor.
6. The apparatus of claim 3 or 4, wherein the light source control module comprises an LED driving power circuit for adjusting a supply current of the LED light source.
7. The apparatus of claim 6, wherein the LED driving power circuit comprises: a control chip, an input circuit, a current regulating circuit, a voltage regulating circuit, an output circuit and an open circuit detection circuit, wherein,
the control chip comprises an LT3755 chip, and the control chip comprises a Vin pin, a CTRL pin, an FB pin, an ISP pin, an ISN pin, an OPRNLED pin, a SENSE pin and a GATE pin;
the input circuit is electrically connected with the Vin pin and is used for injecting a power supply signal into the Vin pin;
the output circuit comprises a sampling resistor, one end of the sampling resistor is electrically connected with the ISP pin, the other end of the sampling resistor is electrically connected with the ISN pin, and the sampling resistor is used for outputting an electric energy signal to the LED module;
the voltage regulating circuit comprises a resistor R53 and a resistor R52, one end of the resistor R53 is electrically connected with the input circuit, the other end of the resistor R53 is electrically connected with the FB pin, one end of the resistor R52 is electrically connected with the FB pin, and the other end of the resistor R52 is grounded;
one end of the LED switch circuit is connected to the input circuit, and the other end of the LED switch circuit is electrically connected with the SENSE pin and the GATE pin;
the current regulating circuit is electrically connected with a CTRL pin and used for inputting a changed voltage signal to the CTRL pin;
the open circuit detection circuit is electrically connected with an OPRNLED pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022649513.9U CN213880334U (en) | 2020-11-16 | 2020-11-16 | Brightness self-adjusting device of light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022649513.9U CN213880334U (en) | 2020-11-16 | 2020-11-16 | Brightness self-adjusting device of light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213880334U true CN213880334U (en) | 2021-08-03 |
Family
ID=77057133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022649513.9U Active CN213880334U (en) | 2020-11-16 | 2020-11-16 | Brightness self-adjusting device of light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213880334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114647132A (en) * | 2022-02-08 | 2022-06-21 | 厦门聚视智创科技有限公司 | Programmable 2D flexible high-brightness imaging technology |
-
2020
- 2020-11-16 CN CN202022649513.9U patent/CN213880334U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114647132A (en) * | 2022-02-08 | 2022-06-21 | 厦门聚视智创科技有限公司 | Programmable 2D flexible high-brightness imaging technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101136181B (en) | Back light source brightness regulating mechanism, method and display apparatus thereof | |
| KR101932368B1 (en) | Head-mounted display apparatus, and display method | |
| CN103841726B (en) | The real-time adjusting device of light-source brightness and method of adjustment thereof in pole piece defects detection | |
| EP2543187B1 (en) | Systems and methods for spatially controlled scene illumination | |
| CN101872106B (en) | Intelligent infrared camera and intelligent infrared light intensity adjustment method thereof | |
| CN110346120B (en) | System and method for testing strong light resolution and dynamic range of automatic gate control image intensifier | |
| CN106375645B (en) | A kind of adaptive control system based on infrared eye | |
| CN201107525Y (en) | Secondary light source apparatus for automatically supplementing light for camera device | |
| CN201707304U (en) | Device for automated optical inspection of surface of product | |
| CN102821250A (en) | Automatic dimming method and device of infrared camera | |
| CN202475619U (en) | Night vision system for eliminating stray light | |
| CN103780957A (en) | Television terminal intelligent control system and television terminal intelligent control method | |
| CN102081278A (en) | Flash control method and device | |
| CN103533252A (en) | Method and device for automatically switching day and night modes | |
| CN103051839A (en) | Device and method for intelligently adjusting light supplementation angle | |
| CN213880334U (en) | Brightness self-adjusting device of light source | |
| CN106094198B (en) | A kind of intelligence color selector optical system self-adapting correction method and device | |
| CN203225091U (en) | Medical equipment and display thereof | |
| CN106102217A (en) | A kind of polychromatic source automatic regulating system being applied to vision-based detection and method | |
| CN104809725A (en) | Cloth defect visual identify detecting device and method | |
| CN109668832A (en) | Cellular li-ion battery surface bulge detection device and its method based on subregion light source | |
| CN103247260A (en) | Automatic regulation system and method for brightness of LED display screen | |
| CN110502942A (en) | Scanning means and its light filling lamp control method | |
| CN216649794U (en) | Autonomous adjustment light supplementing device based on inspection robot | |
| CN208795643U (en) | A kind of automatic adjustment light source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |