An architecture for an industrial acquisition camera for real-time transmission

Abstract

The application discloses a kind of real-time transmission's industrial acquisition camera's architecture, including handheld terminal and PC terminal, the handheld terminal includes control unit, for with PC terminal through data processing unit establishes USB HID protocol, and realizes communication, image acquisition unit, for PC terminal through data processing unit establishes UVC protocol, real-time viewfinder carries out data interaction with PC terminal through HDMI protocol, and PC terminal picture is real-time transmission to handheld terminal and is shown through real-time viewfinder to reach real-time preview etc.Function;The application has the function that multimedia image, video data is stored to client PC in real time, when using, user only needs to connect equipment to PC and start client to start recording, on equipment does not have mass storage medium to meet the demand of security and secrecy, because data is directly sent to client PC, client has picture classification function, so artificial classification upload is not needed, greatly improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of image data acquisition, and more specifically to the architecture of an industrial acquisition camera for real-time transmission. Background Technology

[0002] In recent years, many companies have been vigorously promoting the digitalization of production and manufacturing. In the process of recording process quality, it is necessary to take photos and videos according to the quality inspection requirements and plans. However, the existing recording method uses closed-source SLR cameras, mirrorless cameras and other equipment on the market. The data needs to be saved to media such as SD cards. The uploading process is cumbersome, requires manual classification, is slow and prone to errors, and the management of large-capacity mobile storage media poses certain risks of data leakage. Summary of the Invention

[0003] The purpose of this invention is to provide a convenient and efficient multimedia quality recording device system architecture, which has the function of real-time storage of multimedia images and video data to a client PC. When using it, the user only needs to connect the device to the PC and start the client to begin recording.

[0004] To achieve the above objectives, the present invention adopts the following solution: An architecture for a real-time transmission industrial data acquisition camera includes a handheld terminal and a PC terminal, wherein the handheld terminal includes: The control unit establishes the USB HID protocol through the data processing unit for communication with the PC terminal. The image acquisition unit establishes the UVC protocol through the data processing unit for communication with the PC terminal. The live view unit connects to the PC terminal via HDMI protocol. A touch input unit is used for bidirectional control input between the live view unit and the data processing unit.

[0005] In the above technical solution, the control unit controls a light source module and a human-machine interface terminal, and the human-machine interface terminal sends operation signals to the PC terminal through the control unit.

[0006] In the above technical solution, the PC terminal sends control commands to the image acquisition unit to the control unit via the UVC protocol, and the PC terminal transmits the PC terminal screen to the handheld terminal screen in real time via the HDMI protocol.

[0007] In the above technical solution, the data transmission process includes the following steps: S1: The signal is transmitted to the MCU of the control unit by triggering the photo-taking button. S2: The MCU transmits instructions to the data processing unit via the USB HID protocol, packages the data, and sends it to the PC terminal via the USB data bus; S3: The PC terminal sends a static frame acquisition command to the data processing unit via the UVC protocol. The data processing unit unpacks the data and sends the command to the image acquisition unit. S4: The image acquisition unit converts the image data into an MJPG data stream, which is then packaged by the data processing unit and sent to the PC terminal for storage via the USB data bus.

[0008] In the above technical solution, the photo-taking process includes the following steps: A1: After connecting the handheld terminal to the PC terminal, starting the process, and issuing a photo-taking command, the MCU will send the received signal to the data processing unit via the USB HID protocol. A2: The data processing unit packages the data and sends the photo-taking command to the PC terminal via the USB bus. A3: The PC terminal sends the photo-taking command to the USB bus via the UVC protocol, which is then parsed by the data processing unit and sent to the image acquisition unit to trigger the photo taking. A4: The image acquisition unit sends the image data stream to the data processing unit via the UVC protocol. A5: The data processing unit then sends the image data stream to the USB bus to the PC terminal. After parsing, it saves the image as a picture to the specified path. A6: Connect the live viewfinder to a PC via HDMI protocol to view the live shooting footage on the live viewfinder, and play back the captured images to delete or save them.

[0009] In the above technical solution, the video acquisition process includes the following steps: B1: After connecting the handheld terminal to the PC terminal, starting the recording process and issuing the recording command, the MCU will send the received signal to the data processing unit via the USB HID protocol; B2: The data processing unit packages the data and sends the recording command to the PC terminal via the USB bus; B3: The PC terminal sends the recording command to the USB bus via the UVC protocol, and after being parsed by the data processing unit, it is sent to the image acquisition unit to trigger video recording; B4: The image acquisition unit sends the video image stream to the data processing unit via the UVC protocol; B5: The data processing unit sends the video image stream to the PC terminal via the USB bus; B6: Connect the live viewfinder to a PC via the HDMI protocol to view the live shooting footage on the live viewfinder; B7: After the stop recording signal is given, the MCU sends the stop recording signal to the data processing unit via the USB HID protocol. The data processing unit packages the stop recording signal and sends it to the PC terminal via the USB data bus. The PC terminal sends the stop recording signal to the data processing unit via the UVC protocol, and then the data processing unit sends it to the image acquisition unit to stop recording.

[0010] In the above technical solution, during the shooting process, the control unit controls the light source module through PWM dimming to enable the brightness to be automatically adjusted according to the usage scenario.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: Compared to traditional SLR cameras, this solution addresses the need for security and confidentiality when the device lacks large-capacity storage media. Data is sent directly to the client PC, which has an image categorization function, eliminating the need for manual categorization and uploading, thus greatly improving work efficiency. Compared to traditional camera systems, this solution is simpler in composition and easier to integrate and expand. Attached Figure Description

[0012] The present invention will be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 is a system block diagram. Detailed Implementation

[0013] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0014] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is merely one example of a series of equivalent or similar features.

[0015] As shown in Figure 1, the architecture of this embodiment includes: The control unit mainly consists of an MCU, a power supply module, and an I / O module. It establishes USB HID communication between the MCU and the client PC through programming, sends commands such as taking pictures to the PC client, and is also responsible for controlling the light source drive circuit and processing human-machine interaction signals of the system.

[0016] The PC terminal mainly performs functions such as data storage and playback, controlling camera focus, exposure adjustment, resolution setting, and shutter control via the UVC protocol.

[0017] The data processing unit mainly realizes the aggregation and packaging of UVC and USB HID protocol data, so that the control unit and the image acquisition unit only need a USB bus to interact with the client PC, making the connection simpler and more convenient, and requiring fewer wires.

[0018] The image acquisition unit interacts with the client PC via the UVC protocol. It is simple to use, plug and play, and compatible with most PCs. It can be used directly without installing drivers, and the image data can be transmitted back to the client PC for display and storage in real time.

[0019] The live view unit mainly consists of a display screen and a touch screen. It displays the camera and client images on the screen via the HDMI protocol, and the touch screen enables touch control functions to meet diverse human-computer interaction needs.

[0020] The light source module consists of a drive circuit and a light source panel. The brightness is controlled by adjusting the duty cycle through the PWM signal of the control unit, which meets the needs of shooting in low light and allows for flexible adjustment of the light source brightness.

[0021] Its workflow is as follows: triggering the photo button transmits a signal to the MCU. The MCU then transmits the instruction to the data processing unit via the USB HID protocol. After packaging the data, it sends it to the PC client via the USB data bus. The client then sends a static frame acquisition instruction to the data processing unit via the UVC protocol. The data processing unit unpacks the data and sends the instruction to the image acquisition unit. The image acquisition unit converts the image data into an MJPG or other image format data stream, packages it through the data processing unit, and sends it to the client via the USB data bus. The client then parses the image data and stores it in the PC.

[0022] The photo-taking workflow is as follows: The handheld terminal is connected to the PC terminal. After the client is launched and the photo-taking button is pressed, the MCU receives the button command signal and sends it to the data processing unit via the USBHID protocol. The data processing unit packages the data and sends the photo-taking command to the PC terminal via the USB bus. The PC terminal sends the photo-taking command to the USB bus via the UVC protocol. After being parsed by the data processing unit, it is sent to the image acquisition unit to trigger the photo taking. The image acquisition unit sends the image data stream to the data processing unit via the UVC protocol. The data processing unit then sends the image data stream to the PC terminal via the USB bus. After parsing, the image is saved as an image to a specified path. The live viewfinder is connected to the PC terminal via the HDMI protocol, allowing the user to view the live-shot image. The user can also play back the captured images, delete or save them, etc., through the live viewfinder. During use, the user can also press the light source adjustment button according to the ambient light conditions and send a command to the MCU. The MCU controls the light source module through PWM modulation to change the brightness of the light source.

[0023] The video capture workflow is as follows: The handheld terminal is connected to the PC terminal. After the client is started and the record button is pressed, the MCU receives the button command and sends a start recording command to the data processing unit via the USB HID protocol. The data processing unit then packages the command and sends it to the USB bus to the PC terminal. Upon receiving the command, the PC terminal sends it to the USB bus to the data processing unit via the UVC protocol. The data processing unit then sends the command to the image acquisition unit to trigger the video recording function. The image acquisition unit sends the captured video image to the data processing unit in real time via the UVC protocol, and then to the PC terminal via the USB bus. The live viewfinder is connected to the PC terminal via the HDMI protocol, allowing the user to view the live captured image. Pressing the record button again sends a stop recording signal from the MCU to the data processing unit via the USB HID protocol. The data processing unit then packages the signal and sends it to the USB data bus to the PC terminal. The PC terminal then sends the signal to the PC terminal via the UVC protocol. The protocol sends a stop recording command to the data processing unit, which then sends it to the image acquisition unit. At this point, the image acquisition unit stops recording. Users can also press the light source adjustment button according to the ambient light conditions and send a command to the MCU. The MCU controls the light source module through PWM modulation to change the brightness of the light source.

[0024] This embodiment has low-light shooting capability, which is achieved through a light source module. During the shooting process, you only need to press the brightness adjustment button to turn on the light source. The brightness of the light source can be adjusted automatically according to the usage scenario to meet the usage requirements.

[0025] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An architecture for a real-time transmission industrial data acquisition camera, characterized in that, Includes a handheld terminal and a PC terminal, wherein the handheld terminal includes: The control unit establishes a USB HID protocol through the data processing unit for communication with the PC terminal; The image acquisition unit establishes the UVC protocol through the data processing unit for communication with the PC terminal; The live view unit is connected to the PC terminal via the HDMI protocol, and the PC terminal transmits its image to the screen of the handheld terminal in real time via the HDMI protocol. A touch input unit is used for bidirectional control input between the live view unit and the data processing unit; The data transmission process of the architecture includes: S1, the signal is transmitted to the MCU of the control unit by triggering the photo button; S2, the MCU transmits the instruction to the data processing unit via the USB HID protocol, and the data processing unit packages the instruction and sends it to the PC terminal via the USB data bus; S3, the PC terminal sends a static frame acquisition instruction to the data processing unit via the UVC protocol. The data processing unit unpacks the static frame acquisition instruction and sends it to the image acquisition unit. S4, the image acquisition unit converts the image data into an MJPG data stream, and the data processing unit packages the MJPG data stream and sends it to the PC terminal for storage via the USB data bus.

2. The architecture of a real-time transmission industrial data acquisition camera according to claim 1, characterized in that, The control unit controls a light source module and a human-machine interface terminal, and the human-machine interface terminal sends operation signals to the PC terminal through the control unit.

3. The architecture of a real-time transmission industrial acquisition camera according to claim 1, characterized in that, The photo-taking process includes the following steps: A1, after connecting the handheld terminal to the PC terminal, starting the process and issuing a photo-taking command, the MCU sends the received signal to the data processing unit via the USB HID protocol; A2, the data processing unit packages the data and sends the photo-taking command to the PC terminal via the USB bus; A3, the PC terminal sends the photo-taking command to the USB bus via the UVC protocol, and then sends it to the image acquisition unit after being parsed by the data processing unit to trigger the photo taking; A4, the image acquisition unit sends the image data stream to the data processing unit via the UVC protocol; A5, the data processing unit sends the image data stream to the PC terminal via the USB bus, and the PC terminal parses it and saves it as an image to a specified path; A6 connects the live view unit to the PC terminal via the HDMI protocol, allowing users to view the live captured image on the live view unit and play back the captured images for deletion or saving.

4. The architecture of a real-time transmission industrial acquisition camera according to claim 1, characterized in that, The video capture process includes the following steps: B1. After connecting the handheld terminal to the PC terminal, starting the recording process and issuing a recording command, the MCU sends the received signal to the data processing unit via the USB HID protocol. B2, the data processing unit packages the data and sends the recording command to the PC terminal via the USB bus; B3, the PC terminal sends the recording command to the USB bus via the UVC protocol, and then sends it to the image acquisition unit after being parsed by the data processing unit to trigger video recording; B4, the image acquisition unit sends the video image stream to the data processing unit via the UVC protocol; B5, the data processing unit sends the video image stream to the PC terminal via the USB bus; B6, connect the live view unit to the PC terminal via the HDMI protocol, and view the live shooting screen on the live view unit; B7. After a stop recording signal is given, the MCU sends the stop recording signal to the data processing unit via the USB HID protocol. The data processing unit packages the stop recording signal and sends it to the PC terminal via the USB data bus. The PC terminal sends the stop recording signal to the data processing unit via the UVC protocol, and then the data processing unit sends it to the image acquisition unit to stop recording.

5. The architecture of a real-time transmission industrial acquisition camera according to claim 3 or 4, characterized in that, During the shooting process, the control unit controls the light source module through PWM dimming to automatically adjust the brightness according to the usage scenario.

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