CN216930362U - Intelligent digital light source system - Google Patents
Intelligent digital light source system Download PDFInfo
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- CN216930362U CN216930362U CN202221421446.8U CN202221421446U CN216930362U CN 216930362 U CN216930362 U CN 216930362U CN 202221421446 U CN202221421446 U CN 202221421446U CN 216930362 U CN216930362 U CN 216930362U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model provides an intelligent digital light source system, which can detect the actual brightness information of a light source in real time by arranging a brightness sensor, wherein a singlechip calculates and adjusts the first information of the target brightness generated by a driving light source based on an initial target brightness signal and the actual brightness information fed back by the brightness sensor, the actual brightness of the light source meets the required target brightness by combining the driving power supply, and the whole system is positioned in a closed image acquisition cavity, so that the actual brightness information detected by the brightness sensor is ensured to be from the light source and not influenced by the external environment light.
Description
Technical Field
The utility model relates to the technical field of illumination control, in particular to an intelligent digital light source system.
Background
Image recognition is an important field of artificial intelligence, mainly refers to a technology for recognizing various targets and objects in different modes by processing, analyzing and understanding image information by using a computer, and is a practical application applied to a deep learning algorithm.
The traditional image identification process is mainly divided into four steps: image acquisition, image preprocessing, feature extraction and image identification; as an important link of image recognition, the higher the reducibility of image acquisition, the higher the accuracy of image recognition.
At present, light sources adopted by image acquisition comprise a natural light source and an artificial light source; the natural light source has the characteristics of wide spectrum range, easiness in obtaining, high color reducibility and the like, but the natural light source is difficult to realize consistency, and the light intensity corresponding to different factors such as time, position, season, weather and the like is different, so that the technology for acquiring images based on the natural light source is generally applied to occasions with larger image characteristic difference, such as face recognition, commodity recognition and the like.
Then, for the occasions with unobvious image characteristics and higher recognition detail requirements, the artificial light source is obviously more suitable; however, in the prior art, the current of the LED is generally limited or the power of the LED is generally limited to realize the light emission of the LED, the control mode is fuzzy control without feedback, and many factors influence the actual light emission brightness of the LED, so that it is difficult to accurately control the actual brightness of the artificial light source of the LED; and the conversion rate of converting the electric energy into the light energy is not a fixed value, the brightness which can be obtained by different equipment is completely different, and even the same equipment cannot obtain the desired brightness after the light of the LED artificial light source is attenuated.
That is to say, through the control mode of constant current or constant power control LED artificial light source among the prior art, easily receive components and parts difference influence uniformity, and easily produce the light decay, and then influence final image acquisition structure.
SUMMERY OF THE UTILITY MODEL
In view of the above, in order to solve the above problems, the present invention provides an intelligent digital light source system, which has the following technical scheme:
an intelligent digital light source system, comprising:
an image acquisition cavity;
the light source, the image acquisition device, the brightness sensor, the driving power supply and the single chip microcomputer are positioned in the image acquisition cavity; the single chip microcomputer, the driving power supply and the light source are sequentially connected, and the single chip microcomputer is connected with the brightness sensor;
the singlechip is used for transmitting a corresponding first signal to the driving power supply according to the target brightness information so that the driving power supply transmits luminous current to the light source and the light source is in a luminous state;
the brightness sensor is used for acquiring actual brightness information of the light source in a light-emitting state;
the single chip microcomputer is further used for adjusting the first signal according to the actual brightness information, so that the actual brightness of the light source meets the target brightness.
Preferably, in the above intelligent digital light source system, the driving power supply is a linear step-down constant current source.
Preferably, in the above intelligent digital light source system, the driving power supply and the single chip are integrally provided.
Preferably, in the above intelligent digital light source system, the light source is an annular LED light source or a circular LED light source;
the image acquisition device is positioned in the middle area of the annular LED light source or the circular LED light source.
Preferably, in the above intelligent digital light source system, the intelligent digital light source system further includes:
and the light diffusion plate is positioned on the light emitting side of the light source.
Preferably, in the above intelligent digital light source system, the intelligent digital light source system further includes:
and a fixing device for fixing the light diffusion plate.
Preferably, in the above intelligent digital light source system, the intelligent digital light source system further includes:
and the heat dissipation device is positioned in the image acquisition cavity.
Preferably, in the above intelligent digital light source system, the brightness sensor is a digital light intensity sensor.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides an intelligent digital light source system, comprising: an image acquisition cavity; the light source, the image acquisition device, the brightness sensor, the driving power supply and the single chip microcomputer are positioned in the image acquisition cavity; the single chip microcomputer, the driving power supply and the light source are sequentially connected, and the single chip microcomputer is connected with the brightness sensor; the singlechip is used for transmitting a corresponding first signal to the driving power supply according to the target brightness information so that the driving power supply transmits luminous current to the light source and the light source is in a luminous state; the brightness sensor is used for acquiring actual brightness information of the light source in a light-emitting state; the single chip microcomputer is further used for adjusting the first signal according to the actual brightness information, so that the actual brightness of the light source meets the target brightness. This intelligence digital light source system can real-time detection light source's actual luminance information through setting up luminance sensor, the singlechip is based on initial target luminance signal and the actual luminance information that feeds back through luminance sensor, calculate and adjust the first information that drives the light source and produce target luminance, combine drive power supply to make the actual luminance of light source satisfy required target luminance, and entire system is in a confined image acquisition cavity, can be in order to guarantee that the actual luminance information that luminance sensor detected all comes from the light source, can not influenced by external environment light.
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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent digital light source system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an intelligent digital light source system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an intelligent digital light source system according to an embodiment of the present invention.
The intelligent digital light source system comprises: an image acquisition chamber 1.
The light source 2, the image acquisition device 3, the brightness sensor, the driving power supply and the single chip microcomputer are positioned in the image acquisition cavity 1; the single chip microcomputer, the driving power supply and the light source 2 are sequentially connected, and the single chip microcomputer is connected with the brightness sensor.
The single chip microcomputer is used for transmitting a corresponding first signal to the driving power supply according to the target brightness information, so that the driving power supply transmits a light emitting current to the light source 2, and the light source 2 is in a light emitting state.
The brightness sensor is used for acquiring actual brightness information of the light source 2 in a light-emitting state.
The single chip microcomputer is further used for adjusting the first signal according to the actual brightness information, so that the actual brightness of the light source 2 meets the target brightness.
Alternatively, the light source 2 may be an LED light source.
The driving power supply and the single chip microcomputer can be integrally arranged and formed on a control circuit board 4, and the optional brightness sensor can also be integrally arranged on the control circuit board 4.
In this embodiment, referring to fig. 2, fig. 2 is a schematic diagram of an intelligent digital light source system according to an embodiment of the present invention, as shown in fig. 2, a single chip receives target luminance information, performs data processing on the target luminance information to form a first signal, where the first signal is a signal in a PWM signal format, transmits the first signal to a driving power supply, the driving power supply forms a corresponding light emitting current based on the first signal, and the light source 2 is in a light emitting state based on the light emitting current; at the moment, the brightness sensor acquires actual brightness information of the light source 2 in a light-emitting state in real time and feeds the actual brightness information back to the single chip microcomputer, the single chip microcomputer adjusts output of the first signal based on the actual brightness information and target brightness information, and the driving power supply is controlled to generate new driving current, so that the actual brightness of the light source 2 meets the required target brightness.
That is to say, this intelligence digital light source system can real-time detection light source's actual luminance information through setting up luminance sensor, and the singlechip is based on initial target luminance signal and the actual luminance information that feeds back through luminance sensor, calculates and adjusts the first information that drives the light source and produce the target luminance, combines drive power supply to make the actual luminance of light source satisfy required target luminance to whole system is in a confined image acquisition cavity, can guarantee that the actual luminance information that luminance sensor detected all comes from the light source, can not influenced by external environment light.
It should be noted that the single chip microcomputer, the driving power supply and the brightness sensor provided by the embodiment of the present invention may be implemented by using existing components.
Optionally, in another embodiment of the present invention, the brightness sensor is a digital light intensity sensor.
Specifically, the conventional illumination sensor mainly uses a photoresistor or a photodiode; among them, the photoelectric characteristic of the photoresistor is non-linear, so it is not suitable for the detection element, it is often used as the sensor when switching in the automatic control; the photoresistor needs to convert the signals into digital signals by an A/D converter, and the circuit is complex and high in cost. The illumination characteristic of the photosensitive diode is good linear, when the photosensitive diode is generally used as a linear detection element, the photosensitive diode is selected, the brightness is detected by the photosensitive diode, an A/D converter is required to convert the brightness into a digital signal, the circuit is complex, the cost is high, and the consistency of the circuit is not guaranteed well.
Therefore, in view of the above disadvantages, in the embodiment of the present invention, a 16-bit high-precision digital light intensity sensor, for example, a 16-bit high-precision digital light intensity sensor BH1750FVI, may be used for light intensity detection. BH1750FVI is a digital light intensity sensor chip used for a two-wire serial bus interface, and the highest resolution of the digital light intensity sensor chip can detect a large range of light intensity changes (1 lx-65535 lx). The sensor has the advantages of high light intensity acquisition precision, strong real-time property and the like, and the circuit design is simpler and is easy to realize and integrate.
Optionally, in another embodiment of the present invention, the driving power source is a linear step-down constant current source.
Specifically, in the embodiment of the utility model, the driving power supply can adopt H7310, which is a linear voltage-reducing constant-current driver with a PWM dimming function, and has simple peripheral circuit and large adjustable range of output current.
Moreover, the H7310 has a built-in overheat protection function, can effectively protect the chip, and has a very low quiescent current, typically 100 uA. The chip adopts a special algorithm, can realize a high-precision constant current effect, has the output current constant current precision of +/-3 percent, has the voltage working range of 2.5V-85V, and can easily meet the series-parallel combination of various LED light sources. Compared with the conventional common current-stabilizing switching power supply, the current of the power supply is more stable; compared with a linear constant current source consisting of operational amplifiers, the linear constant current source has the advantages of simple circuit, accurate current control and stronger driving capability.
In a word, the H7350 has the advantages of strong driving capability, high current constant current precision, large current controllable range, simple current design and the like, and is very suitable for precisely controlling the LED current so as to achieve the purpose of precisely controlling the light intensity.
Furthermore, in the embodiment of the utility model, the light intensity compensation control link adopts the singlechip to carry out intelligent control, and compared with the technology of utilizing the error amplifier in the conventional technology, the singlechip control can utilize a PID algorithm and other self-defined control logics to ensure that the response of the light intensity closed-loop control system is quicker and more accurate. In addition, the target brightness information can be stored in an internal EEPROM by the singlechip, and a user can change the target brightness information according to actual requirements through a communication port.
Optionally, in another embodiment of the present invention, as shown in fig. 1, the light source 2 is an annular LED light source and is located on one side of the top of the image capturing cavity 1.
The image acquisition device 3 is positioned in the middle annular area of the annular LED light source.
Specifically, the image acquisition device 3 can be a high-resolution camera, the definition of image acquisition is guaranteed, and the image acquisition device 3 is located in the middle annular region of the annular LED light source, so that the illumination environment of the image acquisition device 3 in the image acquisition process can be completely guaranteed, and the accuracy of an image acquisition result is improved.
Optionally, the light source 2 may further include a circular light source located at one side of the bottom of the image capturing cavity 1, and another matched image capturing device is located at one side of the sidewall of the image capturing cavity.
Optionally, in another embodiment of the present invention, as shown in fig. 1, the intelligent digital light source system further includes:
and a light diffusion plate 5 positioned on the light emitting side of the light source 2.
Specifically, according to the intelligent digital light source system provided by the embodiment of the utility model, the whole system is located in a closed image acquisition cavity 1, so that on one hand, light emitted by the light source 2 can be uniformly projected through the light diffusion plate 5, and on the other hand, actual brightness information detected by the brightness sensor can be ensured to be from the light source 2 and cannot be influenced by external environment light.
Optionally, in another embodiment of the present invention, as shown in fig. 1, the intelligent digital light source system further includes: and a fixing device 6 for fixing the light diffusion plate 5.
In particular, the fixing device 6 is used to prevent the light diffusion plate 5 from being displaced during the use of the intelligent digital light source system.
Optionally, in another embodiment of the present invention, as shown in fig. 1, the intelligent digital light source system further includes:
and the heat dissipation device 7 is positioned in the image acquisition cavity 1.
Specifically, the heat dissipation device 7 is used for performing heat dissipation treatment on each component in the image acquisition cavity 1 so as to prolong the service life of each component.
The above detailed description is provided for an intelligent digital light source system provided by the present invention, and the principle and the implementation of the present invention are explained by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include or include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. An intelligent digital light source system, comprising:
an image acquisition cavity;
the light source, the image acquisition device, the brightness sensor, the driving power supply and the single chip microcomputer are positioned in the image acquisition cavity; the single chip microcomputer, the driving power supply and the light source are sequentially connected, and the single chip microcomputer is connected with the brightness sensor;
the singlechip is used for transmitting a corresponding first signal to the driving power supply according to the target brightness information so that the driving power supply transmits luminous current to the light source and the light source is in a luminous state;
the brightness sensor is used for acquiring actual brightness information of the light source in a light-emitting state;
the single chip microcomputer is further used for adjusting the first signal according to the actual brightness information, so that the actual brightness of the light source meets the target brightness.
2. The intelligent digital light source system of claim 1, wherein the driving power supply is a linear step-down constant current source.
3. The intelligent digital light source system of claim 1, wherein the driving power supply and the single chip set are integrally arranged.
4. The intelligent digital light source system of claim 1, wherein the light source is an annular LED light source or a circular LED light source;
the image acquisition device is positioned in the middle area of the annular LED light source or the circular LED light source.
5. The intelligent digital light source system of claim 1, further comprising:
and the light diffusion plate is positioned on the light emitting side of the light source.
6. The intelligent digital light source system of claim 5, further comprising:
and a fixing device for fixing the light diffusion plate.
7. The intelligent digital light source system of claim 1, further comprising:
and the heat dissipation device is positioned in the image acquisition cavity.
8. The intelligent digital light source system of claim 1, wherein the brightness sensor is a digital light intensity sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221421446.8U CN216930362U (en) | 2022-06-09 | 2022-06-09 | Intelligent digital light source system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221421446.8U CN216930362U (en) | 2022-06-09 | 2022-06-09 | Intelligent digital light source system |
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| Publication Number | Publication Date |
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| CN216930362U true CN216930362U (en) | 2022-07-08 |
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| CN202221421446.8U Active CN216930362U (en) | 2022-06-09 | 2022-06-09 | Intelligent digital light source system |
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- 2022-06-09 CN CN202221421446.8U patent/CN216930362U/en active Active
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