CN114374792B - LED illumination multispectral imaging control system - Google Patents

LED illumination multispectral imaging control system Download PDF

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Publication number
CN114374792B
CN114374792B CN202111515728.4A CN202111515728A CN114374792B CN 114374792 B CN114374792 B CN 114374792B CN 202111515728 A CN202111515728 A CN 202111515728A CN 114374792 B CN114374792 B CN 114374792B
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switch
usb
led lamp
wireless
interface
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CN202111515728.4A
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CN114374792A (en
Inventor
余明
马翠
陈佛奎
朱挥
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Shenzhen Institute of Advanced Technology of CAS
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Shenzhen Institute of Advanced Technology of CAS
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/19—Controlling the light source by remote control via wireless transmission
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]
    • 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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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)

Abstract

An LED illumination multispectral imaging control system, comprising: the USB interface is used for plugging a USB camera; the LED lamp panel is connected with the USB interface and used for providing multiband light; the diffusion plate is arranged on the light emitting side of the LED lamp panel and is used for uniformly dispersing the multi-band light rays passing through the diffusion plate; the control module is connected with the USB interface and used for controlling the luminous wave band of the LED lamp panel and the USB camera to carry out shooting operation, and receiving and forwarding the image data shot by the USB camera to the terminal equipment. The USB interface for plugging the camera module is arranged to form an image acquisition part, so that the compatibility is good; in addition, the LED lamp panel is adopted to provide multi-band light, multi-spectrum illumination design is adopted, and the cost is low.

Description

LED illumination multispectral imaging control system
Technical Field
The application belongs to the technical field of imaging, and particularly relates to an LED illumination multispectral imaging control system.
Background
Multispectral imaging can image biological information of an object to be detected in multiple dimensions, and is widely applied to the fields of biological medicine, chemical industry, environment detection and the like. In the aspect of optical system design, the traditional multispectral imaging detection equipment adopts a Michelson beam interference wind-light system, a prism light splitting system and a grating light splitting system, and the system design is complex and the price is high. In the aspect of an image acquisition system, a traditional control system combines camera driving control and other control units, a common mode adopts a bottom layer to drive a camera and adds control instructions, but because different types of camera driving modes are different, the development difficulty is high.
Disclosure of Invention
The utility model aims at providing a LED illumination multispectral imaging control system, aim at solving the multispectral illumination design complicacy of traditional multispectral imaging system, the poor problem of image acquisition compatibility.
A first aspect of embodiments of the present application provides an LED illumination multispectral imaging control system, comprising:
the USB interface is used for plugging a USB camera;
the LED lamp panel is connected with the USB interface and used for providing multi-band light;
the diffusion plate is arranged on the light emitting side of the LED lamp panel and is used for uniformly dispersing the multi-band light rays passing through;
the control module is connected with the USB interface and used for controlling the luminous wave band of the LED lamp panel and the USB camera to carry out shooting operation, and receiving and forwarding the image data shot by the USB camera to the terminal equipment.
In an alternative embodiment, the control module is provided with a wireless unit for connecting with a wireless camera, and the control module is further used for controlling the wireless camera to perform shooting operation, and receiving and forwarding image data shot by the wireless camera to a terminal device.
In an optional embodiment, the LED lamp panel includes a substrate and a plurality of LED lamp groups with different light emitting wavebands, and the plurality of LED lamp groups are fixed on the surface of the substrate and are enclosed on the periphery of the USB interface.
In an alternative embodiment, the plurality of LED lamp groups includes LED lamp groups having emission wavelengths of 460nm, 520nm, 630nm, 580nm, 650nm, respectively.
In an alternative embodiment, each LED lamp group includes a plurality of LEDs, and a plurality of LEDs form a circumferential array on the surface of the substrate with the USB interface as a center.
In an alternative embodiment, each of the LED lamp groups comprises more than three LEDs.
In an optional embodiment, the terminal device includes a host computer and a wireless terminal, the wireless unit includes a first wireless interface and a second wireless interface, and the control module includes:
the USB interface is used for being inserted into the USB camera;
the first switch comprises a first end, a second end and a third end, wherein the first end is communicated with one of the second end and the third end, the first end of the first switch is connected with the USB interface, the third end of the first switch is connected to the first wireless interface, and the first wireless interface is used for communicating with the wireless camera to transmit the image data;
the hub is connected with the second end of the first change-over switch and is used for being connected with the upper computer and converting data formats;
a second switch including a first end, a second end, and a third end, the first end of the second switch being selectively connected to the second end of the second switch and the third end of the second switch, the third end of the second switch being connected to the hub, the second end of the second switch being connected to the second wireless interface, the second wireless interface being for communicating with the wireless terminal to transmit control commands;
and the controller is connected with the first end of the second change-over switch and the LED lamp panel, and is used for controlling the change-over states of the first change-over switch and the second change-over switch and outputting a dimming signal according to the control command to drive the LED lamp panel to emit light rays of corresponding wave bands.
In an alternative embodiment, the dimming signal is a PWM signal above 10 KHz.
In an alternative embodiment, the USB interface includes a USB socket, a filter circuit, a switching tube, and a pull-up resistor;
the filter circuit is connected between the power pin of the USB plug socket and the control end of the switching tube, the first conducting end of the switching tube is connected to the switching detection pin of the controller, the second conducting end of the switching tube is grounded, the pull-up resistor is connected between the switching detection pin and the power voltage, and the controller is used for controlling the switching states of the first switching switch and the second switching switch according to the level state output enabling signal of the switching detection pin.
In an alternative embodiment, the filter circuit includes a first resistor, a second resistor, and a first capacitor, the first resistor is connected between the power pin of the USB socket and the control terminal of the switching tube, and the second resistor and the first capacitor are connected in parallel between the control terminal of the switching tube and ground.
In an alternative embodiment, the first wireless interface is a WIFI interface and the second wireless interface is a bluetooth interface.
Compared with the prior art, the embodiment of the application has the beneficial effects that: the USB interface for plugging the camera module is arranged to form an image acquisition part, so that the USB camera technology is mature, and the stability and the compatibility are good; in addition, the LED lamp panel is used for providing multi-band light, the multi-spectrum illumination design is low in cost, and the problems of complex multi-spectrum illumination design and poor image acquisition compatibility of a multi-spectrum imaging system are solved.
Drawings
Fig. 1 is a schematic structural diagram of an LED illumination multispectral imaging control system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of an LED illumination multispectral imaging control system according to a second embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of an LED lamp panel of the LED illumination multispectral imaging control system shown in FIG. 1;
FIG. 4 is a schematic diagram of a control circuit of the LED illumination multispectral imaging control system shown in FIG. 1;
fig. 5 is a circuit schematic diagram of a USB interface of the LED illumination multispectral imaging control system shown in fig. 1.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, the present application provides an LED illumination multispectral imaging control system, which includes a USB interface 11, an LED lamp panel 12, a diffusion plate 13, and a control module 14.
The USB interface 11 is used for plugging the USB camera 20;
the LED lamp panel 12 is connected with the USB interface 11, and the LED lamp panel 12 is used for providing multi-band light;
the diffusion plate 13 is disposed on the light emitting side of the LED lamp panel 12, and is used for uniformly dispersing the passing multiband light;
the control module 14 is connected to the USB interface 11, and is configured to control the light emitting band of the LED lamp panel 12 and the USB camera 20 to perform shooting operation, and receive and forward image data shot by USB shooting to the terminal device.
The LED illumination multispectral imaging control system is provided with the USB interface 11 for being connected with the camera module in an inserted mode to form an image acquisition part, and the USB camera technology is mature and has good stability and compatibility; in addition, the LED lamp panel 12 is adopted to provide multi-band light, the multi-spectrum illumination design is low in cost, and the problems of complex multi-spectrum illumination design and poor image acquisition compatibility of a multi-spectrum imaging system are solved.
Referring to fig. 2, in an alternative embodiment, the control module 14 has a wireless unit for connecting to the wireless camera 30, and the control module 14 is further configured to control the wireless camera 30 to perform a shooting operation, and receive and forward image data shot by the wireless camera 30 to the terminal device.
The multi-band LED illumination device has the characteristics that multi-band LED illumination is adopted, the brightness of the LED is adjustable, in addition, the light source of the traditional multi-spectrum imager is huge in size, and the equipment size and the manufacturing cost can be effectively saved by adopting the multi-band LED; and secondly, the wired and wireless combination is realized on the transmission scheme, so that the application scene is wider. The scheme combines the characteristics of miniaturization, multifunction and the like of product design, and has wide application prospect in the fields of biological medical treatment, chemical industry, environmental monitoring and the like.
Referring to fig. 3, in an alternative embodiment, the LED lamp panel 12 includes a substrate 121 and a plurality of LED lamp groups 122 with different light emitting bands, and the LED lamp groups 122 are fixed on the surface of the substrate 121 and are disposed around the USB interface 11. The USB interface 11 is used for plugging the USB camera 20, and the LED lamp set 122 is arranged around the USB interface 11, so that the LED lamp set can project multi-band light rays with appropriate angles to the photographed object in front of the USB camera 20, which is beneficial to imaging effect and details of the photographed object.
Optionally, the plurality of LED lamp groups 122 includes LED lamp groups 122 having emission wavelengths of 460nm, 520nm, 630nm, 580nm, 650nm, respectively. Each LED light group 122 provides light in different wavebands and can independently control the switch and the light brightness, respectively, so that the spectrum system has good flexibility and good shooting effect.
In an alternative embodiment, each LED light group 122 includes a plurality of LEDs that form a circumferential array on the surface of the substrate 121 centered on the USB interface 11. In this way, each LED lamp set 122 is turned on individually, or when a plurality of LED lamp sets 122 are turned on, light with appropriate angles and uniform brightness can be projected to the photographed object in front of the USB camera 20. In addition, each LED lamp set 122 includes more than three LEDs, in this embodiment, three LEDs are arranged in a regular triangle shape for each LED lamp, and the USB interface 11 is enclosed.
Referring to fig. 2 and 4, in an alternative embodiment, the terminal device includes a host computer 40 and a wireless terminal 50, the wireless unit includes a first wireless interface 52 and a second wireless interface 54, and the control module 14 includes a first switch 142, a hub 144, a second switch 146, and a controller 148. In an alternative embodiment, the first wireless interface 52 is a WIFI interface and the second wireless interface 54 is a bluetooth interface. The host computer 40 is, for example, a personal computer device, the wireless terminal 50 is, for example, a notebook computer,
the first switch 142 includes a first terminal d+, D-, a second terminal d1+, D1-, and a third terminal d2+, D2-, the first terminal d+, D-of the first switch 142 is selectively turned on with the second terminal d1+, D1-, and the third terminal d2+, D2-, the first terminal d+, D-of the first switch 142 is connected to the USB interface 11, the third terminal d2+, D2-of the first switch 142 is connected to the first wireless interface 52, and the first wireless interface 52 is used to communicate with the wireless camera 30 to transmit image data.
The hub 144 is connected to the second terminal d1+, D1 of the first switch 142 for connection to the host computer 40 for data format conversion. Optionally, the hub 144 integrates the USB serial port and the RS232 serial port into one port output, and is connected to the host computer 40.
The second switch 146 includes a first terminal usart+, USART-, a second terminal USART1-, and a third terminal USART2+, USART2-, the first terminal usart+, USART-of the second switch 146 is alternatively on with the second terminal USART1+, USART 1-of the second switch 146 and the third terminal USART2+, USART 2-of the second switch 146 is connected to the hub 144, the second terminal USART1+, USART 1-of the second switch 146 is connected to the second wireless interface 54, and the second wireless interface 54 is for communicating with the wireless terminal 50 to transmit control commands.
The controller 148 is connected to the first end usart+, USART-of the second switch 146 and the LED lamp panel 12, and is used for controlling the switch states of the first switch 142 and the second switch 146, and outputting a dimming signal according to the control command to drive the LED lamp panel 12 to emit light of a corresponding wavelength band.
In an alternative embodiment, the dimming signal is a PWM signal above 10KHz in order to prevent the LED from stroboscopic phenomena.
In this embodiment, the wired transmission uses a USB two-in-one interface for output, and the wireless transmission uses a wifi+bluetooth combination mode.
Referring to fig. 4, a pin of the usb camera 20 is connected to the first end d+ and D-of the first SWITCH 142, and the on channel is switched by changing the level of the control end SWITCH1 of the first SWITCH 142. When the control terminal SWITCH1 inputs a high level, the second terminal d1+ and D1-channels of the first SWITCH 142 are opened, the third terminal d2+ and D2-channels are closed, and the image data of the USB camera 20 is transmitted to the hub 144 in a wired manner and then transmitted to the upper computer 40; when the control terminal SWITCH inputs a low level, the second terminal d1+, D1-channel is closed, the third terminal d2+, D2-channel is opened, and the image data of the USB camera 20 is transmitted to the first wireless interface 52 and then forwarded to the wireless terminal 50 in a wireless manner.
The second switch 146 is responsible for controlling the switching between the wired transmission mode and the wireless transmission mode. When the control end SWITCH2 of the second SWITCH 146 inputs a high level, the third end usart2+ and usart2-ports of the second SWITCH 146 are opened, the second end usart1+ and usart1-ports of the second SWITCH 146 are closed, and the control instruction is in a wired transmission mode; when the control terminal SWITCH2 of the second SWITCH 146 inputs a low level, the third terminal usart2+ and usart2-ports of the second SWITCH 146 are closed, the second terminal usart1+ and usart1-ports of the second SWITCH 146 are opened, and the control command is in a wireless transmission mode.
The controller 148 is configured to output a dimming signal and communicate with a serial port, and when the SWITCH detection pin INPUT of the controller 148 is INPUT at a low level, it indicates that the USB camera 20 is plugged into the USB interface 11, and the control pin of the controller 148 outputs a high level to the control terminal SWITCH1 of the first SWITCH 142 and the control terminal SWITCH2 of the second SWITCH 146. When the SWITCH detect pin INPUT is INPUT at high level, it indicates that no USB camera 20 is plugged into the USB interface 11, and the control pin of the controller 148 outputs low level to the control terminal SWITCH1 of the first SWITCH 142 and the control terminal SWITCH2 of the second SWITCH 146.
Referring to fig. 5, in an alternative embodiment, the USB interface 11 includes a USB socket 111, a filter circuit 112, a switching tube Q1, and a pull-up resistor R0; the circuit is configured to detect whether a USB camera 20 is plugged into the USB interface 11,
The filter circuit 112 is connected between the power supply pin VBUS of the USB socket 111 and the control end of the switching tube Q1, the first conducting end of the switching tube Q1 is connected to the switch detection pin INPUT of the controller 148, the second conducting end of the switching tube Q1 is grounded, the pull-up resistor R0 is connected between the switch detection pin INPUT and the power supply voltage VCC, and the controller 148 is configured to control the first switch 142 and the second switch 146 to switch states according to the level state output enable signal of the switch detection pin INPUT.
When the USB camera 20 is plugged into the USB socket 111, the power pin of the USB socket 111 is powered up and output to the control end of the switching tube Q1, and the switching tube Q1 is turned on to pull the switch detection pin INPUT of the controller down to ground (i.e., low level INPUT). When the USB camera 20 is plugged into the USB socket 111, the power pin of the USB socket 111 is powered down, the switching tube Q1 is turned off, and the switch detection pin INPUT of the controller 148 is pulled to a high potential (i.e. high level INPUT) by the pull-up resistor R0.
In an alternative embodiment, the filter circuit 112 includes a first resistor R1, a second resistor R2, and a first capacitor C1, where the first resistor R1 is connected between the power pin of the USB socket 111 and the control terminal of the switching tube Q1, and the second resistor R2 and the first capacitor C1 are connected in parallel between the control terminal of the switching tube Q1 and ground. The first resistor R1 and the first capacitor C1 play a role of low-pass filtering, the second resistor R2 improves the anti-interference capability of the switching tube Q1, and the switching tube Q1 is an NMOS tube or an NPN triode.
Compared with the prior art, the embodiment of the application has the beneficial effects that: the LED illumination multispectral imaging control system is provided with the USB interface 11 and the wireless unit which are used for being connected with the camera module in an inserting mode, the technology of the USB interface 11 and the wireless transmission technology is mature, and the compatibility is good; in addition, the LED lamp panel 12 is adopted to provide multi-band light, multi-spectrum illumination design and low cost.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.

Claims (8)

1. An LED illumination multispectral imaging control system, further comprising:
the USB interface is used for plugging a USB camera;
the LED lamp panel is connected with the USB interface and used for providing multi-band light;
the diffusion plate is arranged on the light emitting side of the LED lamp panel and is used for uniformly dispersing the multi-band light rays passing through;
the control module is connected with the USB interface and used for controlling the luminous wave band of the LED lamp panel and the USB camera to carry out shooting operation, and receiving and forwarding image data shot by the USB camera to terminal equipment;
the control module is provided with a wireless unit used for being connected with the wireless camera, and is also used for controlling the wireless camera to carry out shooting operation, receiving and forwarding image data shot by the wireless camera to terminal equipment;
the terminal equipment comprises an upper computer and a wireless terminal, the wireless unit comprises a first wireless interface and a second wireless interface, and the control module comprises:
the first switch comprises a first end, a second end and a third end, wherein the first end is communicated with one of the second end and the third end, the first end of the first switch is connected with the USB interface, the third end of the first switch is connected to the first wireless interface, and the first wireless interface is used for communicating with the wireless camera to transmit the image data;
the hub is connected with the second end of the first change-over switch and is used for being connected with the upper computer and converting data formats;
a second switch including a first end, a second end, and a third end, the first end of the second switch being selectively connected to the second end of the second switch and the third end of the second switch, the third end of the second switch being connected to the hub, the second end of the second switch being connected to the second wireless interface, the second wireless interface being for communicating with the wireless terminal to transmit control commands;
and the controller is connected with the first end of the second change-over switch and the LED lamp panel, and is used for controlling the change-over states of the first change-over switch and the second change-over switch and outputting a dimming signal according to the control command to drive the LED lamp panel to emit light rays of corresponding wave bands.
2. The LED illumination multispectral imaging control system of claim 1, wherein the LED lamp panel comprises a substrate and a plurality of LED lamp groups with different light emitting wavebands, and the plurality of LED lamp groups are fixed on the surface of the substrate and are arranged around the periphery of the USB interface.
3. The LED illumination multispectral imaging control system of claim 2, wherein a plurality of the LED lamp groups comprise LED lamp groups having emission wavelengths of 460nm, 520nm, 630nm, 580nm, 650nm, respectively.
4. A LED illumination multispectral imaging control system as recited in claim 2 or 3, wherein each of the LED light groups comprises a plurality of LEDs, the plurality of LEDs forming a circumferential array on the surface of the substrate centered on the USB interface.
5. The LED illumination multispectral imaging control system of claim 4, wherein each of the LED light groups comprises more than three of the LEDs.
6. The LED illuminated multispectral imaging control system of claim 1, wherein the USB interface comprises a USB socket, a filter circuit, a switching tube, and a pull-up resistor;
the filter circuit is connected between the power pin of the USB plug socket and the control end of the switching tube, the first conducting end of the switching tube is connected to the switching detection pin of the controller, the second conducting end of the switching tube is grounded, the pull-up resistor is connected between the switching detection pin and the power voltage, and the controller is used for controlling the switching states of the first switching switch and the second switching switch according to the level state output enabling signal of the switching detection pin.
7. The LED illuminated multispectral imaging control system of claim 6, wherein the filter circuit comprises a first resistor, a second resistor, and a first capacitor, the first resistor connected between a power pin of the USB socket and a control terminal of the switching tube, the second resistor and the first capacitor connected in parallel between the control terminal of the switching tube and ground.
8. The LED illuminated multispectral imaging control system of claim 1, wherein the first wireless interface is a WIFI interface and the second wireless interface is a bluetooth interface.
CN202111515728.4A 2021-12-13 2021-12-13 LED illumination multispectral imaging control system Active CN114374792B (en)

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