Automatic on-off circuit, video exhibition stand and interaction system

Abstract

The utility model belongs to the technical field of interaction, and provides an automatic on-off circuit, a video exhibition stand and an interaction system. The circuit comprises a detection module, a control module and an interface module, the detection module is arranged on a lens arm of the video exhibition stand, the control module is connected with the detection module and the interface module, and the interface module is used for being connected with terminal equipment. The detection module sends a first signal to the control module when the lens arm is unfolded; the control module sends a first instruction to the interface module according to the first signal; the interface module transmits the first instruction to the terminal equipment, so that the terminal equipment opens exhibition platform software according to the first instruction; the detection module also sends a second signal to the control module when the lens arm is closed; the control module further sends a second instruction to the interface module according to the second signal; and the interface module further transmits the second instruction to the terminal equipment, so that the terminal equipment closes the exhibition platform software according to the second instruction. According to the application, the opening or closing of the exhibition stand software can be automatically triggered only by unfolding or closing the lens arm.

Description

Technical Field

[0001] This application belongs to the field of interactive technology, and in particular relates to an automatic power on / off circuit, a video display stand, and an interactive system. Background Technology

[0002] Currently, both opening and closing video display stands suffer from cumbersome and complex operation procedures. For example, to open a video display stand, users need to not only extend the lens arm and light arm but also open the video display stand software. Since the video display stand software is installed on terminal devices such as computers and projectors, users need to open the software on the terminal device, and then return to the video display stand to perform a series of actions, making the opening process cumbersome and complicated. Similarly, to close a video display stand, users need to close the software on the terminal device, and then return to the video display stand to perform a series of shutdown actions (such as closing the lens arm and light arm), making the shutdown process cumbersome and complicated. Utility Model Content

[0003] This application provides an automatic power-on / off circuit, a video display stand, and an interactive system, which can solve the problem that the operation steps for opening and closing video display stands are cumbersome and complicated.

[0004] In a first aspect, embodiments of this application provide an automatic power-on / off circuit, including a detection module, a control module, and an interface module. The detection module is mounted on the lens arm of a video display stand, and the control module is connected to both the detection module and the interface module. The interface module is used to connect to a terminal device.

[0005] The detection module is used to send a first signal to the control module when the lens arm is extended; the control module is used to send a first instruction to the interface module according to the first signal; the interface module is used to transmit the first instruction to the terminal device, so that the terminal device opens the display software according to the first instruction; the detection module is also used to send a second signal to the control module when the lens arm is closed; the control module is also used to send a second instruction to the interface module according to the second signal; the interface module is also used to transmit the second instruction to the terminal device, so that the terminal device closes the display software according to the second instruction.

[0006] In one possible implementation of the first aspect, the automatic power on / off circuit further includes a button module connected to the control module;

[0007] After the booth software is opened, the button module is triggered and sends a trigger signal to the control module; the control module is used to send a third instruction to the interface module according to the trigger signal; the interface module is used to transmit the third instruction to the terminal device, so that the terminal device instructs the booth software to take a picture according to the third instruction.

[0008] In one possible implementation of the first aspect, the detection module includes an accelerometer chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a second capacitor. The power supply pin of the accelerometer chip is connected to the first end of the first resistor and the first end of the first capacitor, respectively. The input / output power supply pin of the accelerometer chip is connected to the first end of the second capacitor and a first power supply, respectively. An interrupt pin of the accelerometer chip is connected to the first end of the second resistor and the control module, respectively. The data line pin of the accelerometer chip is connected to the first end of the third resistor and the control module, respectively. The clock line pin of the accelerometer chip is connected to the first end of the fourth resistor and the control module, respectively. The second ends of the first resistor, the second resistor, the third resistor, and the fourth resistor are all connected to the first power supply. The second ends of the first capacitor, the second capacitor, and the ground pin and input / output ground pin of the accelerometer chip are all grounded.

[0009] In one possible implementation of the first aspect, the control module includes a control chip, wherein a first general-purpose input / output pin, a second general-purpose input / output pin, and a third general-purpose input / output pin of the control chip are respectively connected to the detection module; a general-purpose serial bus data positive signal pin and a general-purpose serial bus data negative signal pin of the control chip are respectively connected to the interface module; a fourth general-purpose input / output pin of the control chip is connected to the button module; a power supply pin of the control chip is connected to a second power supply; and a ground pin of the control chip is grounded.

[0010] In one possible implementation of the first aspect, the interface module includes a USB interface, a fifth resistor, a third capacitor, a fourth capacitor, a protection diode, a common-mode inductor, and a first ferrite bead. The power supply pin of the USB interface is connected to the first end of the first ferrite bead and the first end of the protection diode, respectively. The second end of the first ferrite bead is connected to the first end of the fifth resistor, the first end of the third capacitor, the first end of the fourth capacitor, and a third power supply, respectively. The positive data line pin of the USB interface is connected to the second end of the common-mode inductor, and the negative data line pin of the USB interface is connected to the first end of the common-mode inductor. The third and fourth ends of the common-mode inductor are connected to the control module, respectively. The second ends of the third capacitor, the fourth capacitor, the fifth resistor, the protection diode, and the ground pin of the USB interface are all grounded.

[0011] In one possible implementation of the first aspect, the interface module further includes a protection unit, which is connected to the positive data line pin and the negative data line pin of the USB interface, respectively.

[0012] The protection unit is used to provide electrostatic protection for the positive and negative data line pins of the USB interface.

[0013] In one possible implementation of the first aspect, the protection unit includes an electrostatic discharge (ESD) protection chip, the power supply pin of which is connected to a first power supply, the ground pin of which is grounded, and the two input / output pins of which are respectively connected to the positive data line pin and the negative data line pin of the USB interface.

[0014] In one possible implementation of the first aspect, the button module includes a button, a sixth resistor, and a fifth capacitor. The first end of the button is connected to the first end of the sixth resistor, the first end of the fifth capacitor, and the control module. The second end of the button and the second end of the fifth capacitor are both grounded. The second end of the sixth resistor is connected to a first power supply.

[0015] Secondly, embodiments of this application provide a video display stand, including the automatic power-on / off circuit described in any one of the first aspects.

[0016] Thirdly, embodiments of this application provide an interactive system, including the video display stand described in any one of the second aspects.

[0017] The beneficial effects of the embodiments in this application compared with the prior art are:

[0018] This application provides an automatic power on / off circuit, including a detection module, a control module, and an interface module. The detection module is mounted on the lens arm of the video display stand. The control module is connected to both the detection module and the interface module. The interface module is used to connect to a terminal device.

[0019] The detection module sends a first signal to the control module when the lens arm is extended; the control module sends a first instruction to the interface module based on the first signal; the interface module transmits the first instruction to the terminal device, enabling the terminal device to open the display software according to the first instruction. This application automatically triggers the opening of the display software simply by extending the lens arm, eliminating the need for back-and-forth operations between the video display stand and the terminal device, significantly simplifying the operation process of the video display stand and greatly improving the user experience.

[0020] The detection module is also used to send a second signal to the control module when the lens arm is closed; the control module is also used to send a second command to the interface module according to the second signal; the interface module is also used to transmit the second command to the terminal device, so that the terminal device closes the display software according to the second command. This application can automatically trigger the closure of the display software simply by closing the lens arm, eliminating the need for back-and-forth operations between the video display and the terminal device, greatly simplifying the operation process of the video display and significantly improving the user experience.

[0021] In summary, the automatic power on / off circuit provided in this application embodiment solves the problem of cumbersome and complicated operation steps in the current video display stand's opening and closing.

[0022] It is understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic block diagram of an automatic power on / off circuit provided in one embodiment of this application;

[0025] Figure 2 This is a schematic block diagram of an automatic power on / off circuit provided in another embodiment of this application;

[0026] Figure 3 This is a circuit connection diagram of a detection module provided in an embodiment of this application;

[0027] Figure 4This is a circuit connection diagram of a control module provided in an embodiment of this application;

[0028] Figure 5 This is a circuit connection diagram of an interface module provided in an embodiment of this application;

[0029] Figure 6 This is a circuit connection diagram of an interface module provided in another embodiment of this application;

[0030] Figure 7 This is a circuit connection diagram of a protection unit provided in an embodiment of this application;

[0031] Figure 8 This is a circuit connection diagram of a button module provided in one embodiment of this application.

[0032] In the diagram: 10, detection module; 20, control module; 30, interface module; 31, protection unit; 40, terminal equipment; 41, booth software; 50, button module. Detailed Implementation

[0033] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0034] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0035] As used in this application specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if detected [the described condition or event]" may be interpreted, depending on the context, as "once determined," "in response to determination," "once detected [the described condition or event]," or "in response to detection [the described condition or event]."

[0036] Furthermore, in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0038] A video booth typically consists of two parts: a camera and a demonstration platform. The camera is connected to the demonstration platform via a lens arm. To facilitate better application, the demonstration platform also includes a control panel, auxiliary lighting, audio / video input / output, computer interfaces, and other expansion equipment. The working principle of a video booth is to convert information such as physical objects, documents, images, and processes into image signals, which are then output to terminal devices such as computers, projectors, and monitors. It is commonly used in various settings such as education and training, video conferencing, and seminars.

[0039] However, the current methods for opening and closing video display stands are cumbersome and complex. For example, to open the video display stand, users need to not only extend the lens arm and light arm but also open the video display stand software. Since the video display stand software is installed on terminal devices such as computers and projectors, users need to open the software on the terminal device and then return to the video display stand to perform a series of actions, making the opening process cumbersome and complicated. Similarly, to close the video display stand, users need to close the software on the terminal device and then return to the video display stand to perform a series of shutdown actions (such as closing the lens arm and light arm), making the shutdown process cumbersome and complicated.

[0040] To address the aforementioned problems, embodiments of this application provide an automatic power on / off circuit, such as... Figure 1 As shown, the automatic power-on / off circuit includes a detection module 10, a control module 20, and an interface module 30. The detection module 10 is mounted on the lens arm of the video display stand. The control module 20 is connected to both the detection module 10 and the interface module 30. The interface module 30 is used to connect to the terminal device 40. For example, the terminal device 40 can be a computer, projector, or monitor. It should be noted that the terminal device 40 is equipped with display stand software developed based on the video display stand, which enables further processing and display control of the images captured by the video display stand.

[0041] Specifically, the detection module 10 sends a first signal to the control module 20 when the lens arm is extended; the control module 20 sends a first instruction to the interface module 30 according to the first signal; the interface module 30 transmits the first instruction to the terminal device 40, causing the terminal device 40 to open the display software 41 according to the first instruction. This application automatically triggers the opening of the display software 41 simply by extending the lens arm, eliminating the need for back-and-forth operations between the video display stand and the terminal device 40, greatly simplifying the operation process of the video display stand and significantly improving the user experience.

[0042] The detection module 10 is also used to send a second signal to the control module 20 when the lens arm is closed; the control module 20 is also used to send a second instruction to the interface module 30 according to the second signal; the interface module 30 is also used to transmit the second instruction to the terminal device 40, so that the terminal device 40 closes the display software 41 according to the second instruction. This application can automatically trigger the closure of the display software 41 simply by closing the lens arm, eliminating the need for back-and-forth operation between the video display and the terminal device 40, greatly simplifying the operation process of the video display and significantly improving the user experience.

[0043] In summary, the automatic power on / off circuit provided in this application embodiment solves the problem of cumbersome and complicated operation steps in the current video display stand's opening and closing.

[0044] It should be noted that if the display software 41 is already running when the lens arm is extended, then the terminal device 40 will not respond to the first instruction upon receiving it. If the display software 41 is already closed when the lens arm is closed, then the terminal device 40 will not respond to the second instruction upon receiving it.

[0045] like Figure 2 As shown, the automatic power on / off circuit provided in this application embodiment also includes a button module 50, which is connected to the control module 20.

[0046] Specifically, after the booth software 41 is opened, the button module 50 is triggered and sends a trigger signal to the control module 20; the control module 20 is used to send a third instruction to the interface module 30 according to the trigger signal; the interface module 30 is used to transmit the third instruction to the terminal device 40, so that the terminal device 40 instructs the booth software 41 to take a picture according to the third instruction.

[0047] This application sets up a button module 50, which enables one-click photo taking after the booth software 41 is opened. This eliminates the need for users to manually click the photo button on the booth software 41 and then return to the video booth for other operations, saving users' operation time and improving efficiency.

[0048] It should be noted that after the booth software 41 is started, the camera on the video booth captures images in real time and displays the captured images on the booth software 41. Therefore, after the booth software 41 is started, a one-click photo-taking function can be achieved by triggering the button module 50 in this application.

[0049] like Figure 3 As shown, the detection module 10 includes an accelerometer chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first capacitor C1, and a second capacitor C2. The power supply pin VDD of the accelerometer chip U1 is connected to the first terminal of the first resistor R1 and the first terminal of the first capacitor C1, respectively. The input / output power supply pin VDDIO of the accelerometer chip U1 is connected to the first terminal of the second capacitor C2 and the first power supply, respectively. An interrupt pin INT1 of the accelerometer chip U1 is connected to the first terminal of the second resistor R2 and the control module 20, respectively. The data line pin SDA of the velocity sensor chip U1 is connected to the first end of the third resistor R3 and the control module 20, respectively. The clock line pin SCL of the accelerometer chip U1 is connected to the first end of the fourth resistor R4 and the control module 20, respectively. The second ends of the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 are all connected to the first power supply. The second ends of the first capacitor C1 and the second capacitor C2, as well as the ground pins GND1, GND2, and the input / output ground pin GNDIO of the accelerometer chip U1, are all grounded. The voltage provided by the first power supply is 3.3V. The first resistor R1 is used for current limiting and voltage division. The second resistor R2 acts as a pull-up resistor. When the interrupt pin INT1 of the accelerometer chip U1 has no signal output, it pulls the interrupt pin INT1 of the accelerometer chip U1 up to the power supply voltage, ensuring the stability of the level of the interrupt pin INT1 of the accelerometer chip U1, avoiding false triggering of interrupts, and enhancing the signal driving capability. The third resistor, R3, serves as a pull-up resistor in I2C (Inter-Integrated Circuit) communication. In I2C communication, the data line SDA (Serial Data) requires a pull-up resistor to ensure it is high when the bus is idle, guaranteeing data transmission accuracy and stability, and enhancing signal driving capability. The fourth resistor, R4, also serves as a pull-up resistor in I2C communication, ensuring the stability and accuracy of the SCL (Serial Clock) clock signal and providing a suitable level for the clock signal.

[0050] Specifically, the accelerometer chip U1, as the core device of the detection module 10, is used to detect acceleration-related physical quantities (such as motion state, tilt angle, vibration, etc.), and converts the detected acceleration signal into an electrical signal. Finally, it communicates with the control module 20 through the data line pin SDA and the clock line pin SCL. Before communicating with the control module 20, the accelerometer chip U1 sends an interrupt signal to the control module 20 through the interrupt pin INT1 to indicate that a specific event has occurred.

[0051] For example, when the accelerometer chip U1 detects the lens arm extending, it sends a first interrupt signal to the control module 20 via the interrupt pin INT1, informing the control module 20 that a specific event has occurred. Then, it sends the acceleration data of the lens arm extension to the control module 20 via the data line pin SDA and the clock line pin SCL. In other words, the first signal sent from the detection module 10 to the control module 20 includes the first interrupt signal and the acceleration data of the lens arm extension.

[0052] When the accelerometer chip U1 detects lens arm closure, it sends a second interrupt signal to the control module 20 via the interrupt pin INT1, informing the control module 20 that a specific event has occurred. Then, it sends the acceleration data of lens arm closure to the control module 20 via the data line pin SDA and the clock line pin SCL. In other words, the second signal sent from the detection module 10 to the control module 20 includes the second interrupt signal and the acceleration data of lens arm closure.

[0053] like Figure 4 As shown, the control module 20 includes a control chip U2. The first general-purpose input / output (GPIO) pin GPIO1, the second GPIO pin GPIO2, and the third GPIO pin GPIO3 of the control chip U2 are connected to the detection module 10. The universal serial bus (USB) positive signal pin USB_DP1 and the universal serial bus (USB) negative signal pin USB_DM1 of the control chip U2 are connected to the interface module 30. The fourth GPIO pin GPIO4 of the control chip U2 is connected to the button module 50. The power supply pin VDD of the control chip U2 is connected to a second power supply, and the ground pin of the control chip U2 is grounded. The voltage of the second power supply is 1.2V.

[0054] In this embodiment, the control chip U2 uses a high-performance image processor, model FIC7610C. The FIC7610C chip is based on a 16-bit RISC (Reduced Instruction Set Computer) architecture (100MHz clock speed), and has a built-in ISP (Image Signal Processor) engine with a throughput of 240M / s. It supports 4K30@30fps video stream processing or real-time processing of single-channel 12M pixel (4000×3000) image data, and has advantages such as multi-format encoding capabilities, a rich interface matrix, and low-power design. Figure 4 As can be seen, this application only provides a connection diagram of the pins relevant to this application. For other pins, please refer to the specific usage method of the FIC7610C chip; this application will not elaborate further. It should be noted that... Figure 4 The power supply pin VDD is the core power supply pin of the FIC7610C chip. The first general purpose input / output pin GPIO1, the second general purpose input / output pin GPIO2, the third general purpose input / output pin GPIO3, and the fourth general purpose input / output pin GPIO4 are the four general purpose input / output pins of the FIC7610C chip. The first, second, third, and fourth pins are only for the convenience of distinguishing them in the circuit description. In fact, these pins have no essential differences in functional characteristics and can be flexibly configured as input or output modes according to the circuit design requirements.

[0055] Specifically, when the accelerometer chip U1 detects the lens arm unfolding, it sends a first interrupt signal to the first general-purpose input / output pin GPIO1 of the control chip U2 via the interrupt pin INT1. Upon receiving the first interrupt signal, the control chip U2 reads the acceleration data of the unfolded lens arm via the second general-purpose input / output pin GPIO2 and the third general-purpose input / output pin GPIO3, processes the acceleration data to obtain a first instruction, and finally sends the first instruction to the interface module 30 via the universal serial bus data positive signal pin USB_DP1 and the universal serial bus data negative signal pin USB_DM1. The interface module 30 transmits the first instruction to the terminal device 40, enabling the terminal device 40 to open the display software 41 according to the first instruction. This application automatically triggers the opening of the display software 41 simply by unfolding the lens arm, eliminating the need for back-and-forth operations between the video display stand and the terminal device 40, greatly simplifying the operation process of the video display stand and significantly improving the user experience.

[0056] After the booth software 41 is opened, when the button module 50 is triggered, a trigger signal is sent to the fourth general-purpose input / output pin GPIO4 of the control chip U2. The control chip U2 then sends a third instruction to the interface module 30 based on the trigger signal. The interface module 30 transmits the third instruction to the terminal device 40, which instructs the booth software 41 to take a picture according to the third instruction. After opening the booth software 41, a one-click photo-taking function can be achieved by triggering the button module 50, eliminating the need for the user to manually click the photo button on the booth software 41 and then return to the video booth for other operations, thus saving the user's operation time and improving efficiency.

[0057] When the accelerometer chip U1 detects that the lens arm is closed, it sends a second interrupt signal to the first general-purpose input / output pin GPIO1 of the control chip U2 via the interrupt pin INT1. Upon receiving the second interrupt signal, the control chip U2 reads the acceleration data of the closed lens arm via the second general-purpose input / output pin GPIO2 and the third general-purpose input / output pin GPIO3, processes the acceleration data to obtain a second instruction, and finally sends the second instruction to the interface module 30 via the universal serial bus data positive signal pin USB_DP1 and the universal serial bus data negative signal pin USB_DM1. The interface module 30 also transmits the second instruction to the terminal device 40, causing the terminal device 40 to close the display software 41 according to the second instruction. This application automatically triggers the closure of the display software 41 simply by closing the lens arm, eliminating the need for back-and-forth operations between the video display and the terminal device 40, greatly simplifying the operation process of the video display and significantly improving the user experience.

[0058] like Figure 5As shown, the interface module 30 includes a USB (Universal Serial Bus) interface U3, a fifth resistor R5, a third capacitor C3, a fourth capacitor C4, a protection diode D_ESD, a common-mode inductor LCM, and a first ferrite bead FB1. The power supply pin VBUS of the USB interface U3 is connected to the first terminal of the first ferrite bead FB1 and the first terminal of the protection diode D_ESD. The second terminal of the first ferrite bead FB1 is connected to the first terminal of the fifth resistor R5, the first terminal of the third capacitor C3, the first terminal of the fourth capacitor C4, and the third power supply USB_VBUS. The positive data line pin D+ of the USB interface U3 is connected to the second terminal of the common-mode inductor LCM, and the negative data line pin D- of the USB interface U3 is connected to the first terminal of the common-mode inductor LCM. The third and fourth terminals of the common-mode inductor LCM are connected to the control module 20. The second terminals of the third capacitor C3, the fourth capacitor C4, the fifth resistor R5, the second terminal of the protection diode D_ESD, and the ground pin GND1 of the USB interface U3 are all grounded. The third capacitor C3 and the fourth capacitor C4 are both decoupling capacitors used to filter out high-frequency noise and ripple on the power lines and stabilize the power supply voltage. The fifth resistor R5 is used for current limiting and voltage division. The common-mode inductor LCM is used to suppress common-mode interference on the USB data line, improving the anti-interference capability and signal integrity of data transmission. The first ferrite bead FB1 is used to suppress high-frequency noise and reduce electromagnetic interference.

[0059] Specifically, when the accelerometer chip U1 detects the lens arm unfolding, it sends a first interrupt signal to the first general-purpose input / output pin GPIO1 of the control chip U2 via the interrupt pin INT1. Upon receiving the first interrupt signal, the control chip U2 reads the acceleration data of the unfolded lens arm via the second general-purpose input / output pin GPIO2 and the third general-purpose input / output pin GPIO3, processes the acceleration data to obtain a first instruction, and finally sends the first instruction to the USB interface U3 via the universal serial bus data positive signal pin USB_DP1 and the universal serial bus data negative signal pin USB_DM1. The USB interface U3 transmits the first instruction to the terminal device 40, enabling the terminal device 40 to open the display software 41 according to the first instruction. This application automatically triggers the opening of the display software 41 simply by unfolding the lens arm, eliminating the need for back-and-forth operations between the video display stand and the terminal device 40, greatly simplifying the operation process of the video display stand and significantly improving the user experience. The first instruction is based on the HID (Human Interface Device) protocol.

[0060] After the booth software 41 is opened, when the button module 50 is triggered, a trigger signal is sent to the fourth general-purpose input / output pin GPIO4 of the control chip U2. The control chip U2 then sends a third instruction to the USB interface U3 based on the trigger signal. The USB interface U3 transmits the third instruction to the terminal device 40, causing the terminal device 40 to instruct the booth software 41 to take a picture. After opening the booth software 41, triggering the button module 50 enables a one-click photo-taking function, eliminating the need for the user to manually click the photo button on the booth software 41 and then return to the video booth for other operations, thus saving user time and improving efficiency. The third instruction is based on the HID protocol.

[0061] When the accelerometer chip U1 detects that the lens arm is closed, it sends a second interrupt signal to the first general-purpose input / output pin GPIO1 of the control chip U2 via the interrupt pin INT1. Upon receiving the second interrupt signal, the control chip U2 reads the acceleration data of the closed lens arm via the second general-purpose input / output pin GPIO2 and the third general-purpose input / output pin GPIO3, processes the acceleration data to obtain a second instruction, and finally sends the second instruction to the USB interface U3 via the universal serial bus data positive signal pin USB_DP1 and the universal serial bus data negative signal pin USB_DM1. The USB interface U3 transmits the second instruction to the terminal device 40, causing the terminal device 40 to close the display software 41 according to the second instruction. This application automatically triggers the closure of the display software 41 simply by closing the lens arm, eliminating the need for back-and-forth operations between the video display and the terminal device 40, greatly simplifying the operation process of the video display and significantly improving the user experience. The second instruction is based on the HID protocol.

[0062] like Figure 6 As shown, the interface module 30 also includes a protection unit 31, which is connected to the positive data line pin D+ and the negative data line pin D- of the USB interface U3, respectively.

[0063] Specifically, the protection unit 31 is used to provide electrostatic protection for the positive data line pin D+ and the negative data line pin D- of the USB interface U3.

[0064] like Figure 7 As shown, the protection unit 31 includes an electrostatic discharge (ESD) protection chip U4. The power supply pin 5 of the ESD protection chip U4 is connected to the first power supply, and the ground pin 2 of the ESD protection chip U4 is grounded. The two input / output pins 3 and 4 of the ESD protection chip U4 are connected to the positive data line pin D+ and the negative data line pin D- of the USB interface U3, respectively. Specifically, when there is static electricity in the external environment, the ESD protection chip U4 will quickly conduct the static charge to ground, preventing high static voltage from being applied to the internal circuitry, thereby achieving the purpose of circuit protection.

[0065] like Figure 8 As shown, the button module 50 includes a button SB, a sixth resistor R6, and a fifth capacitor C5. The first terminal of button SB is connected to the first terminal of the sixth resistor R6, the first terminal of the fifth capacitor C5, and the control module 20. The second terminals of button SB and the fifth capacitor C5 are both grounded. The second terminal of the sixth resistor R6 is connected to the first power supply. The sixth resistor R6 acts as a pull-up resistor, used to pull the fourth general-purpose input / output pin GPIO4 of the control chip U2 to a high level when button SB is not triggered. The fifth capacitor C5 acts as a decoupling capacitor, used to filter out high-frequency noise, stabilize the signal, and prevent false triggering.

[0066] Specifically, in combination Figure 4 and Figure 8 It can be seen that when button SB is not triggered, the sixth resistor R6 is used to pull up the fourth general-purpose input / output pin GPIO4 of the control chip U2 to a high level. After the booth software 41 is opened, when button SB is triggered, the fourth general-purpose input / output pin GPIO4 of the control chip U2 is pulled down to a low level, that is, a low-level trigger signal is received, and the trigger signal is processed to obtain the third instruction. Finally, the third instruction is sent to the USB interface U3 through the universal serial bus data positive signal pin USB_DP1 and the universal serial bus data negative signal pin USB_DM1. The USB interface U3 is used to transmit the third instruction to the terminal device 40, so that the terminal device 40 instructs the booth software 41 to take a picture according to the third instruction, realizing the one-click picture function. The user does not need to manually click the picture button on the booth software 41 and then return to the video booth to perform other operations, saving the user's operation time and improving efficiency.

[0067] This application embodiment also provides a video display stand, including the automatic power-on / off circuit described above. Since the video display stand provided in this application embodiment includes the aforementioned automatic power-on / off circuit, the video display stand only needs to open or close the lens arm to automatically trigger the opening or closing of the display stand software 41, eliminating the need for back-and-forth operation between the video display stand and the terminal device 40. This greatly simplifies the operation process of the video display stand and significantly improves the user experience.

[0068] This application also provides an interactive system, including the video display stand described above. Since the interactive system provided in this application adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated upon further here.

[0069] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An automatic power on / off circuit, characterized in that, It includes a detection module, a control module, and an interface module. The detection module is mounted on the lens arm of the video display stand. The control module is connected to both the detection module and the interface module. The interface module is used to connect to a terminal device. The detection module is used to send a first signal to the control module when the lens arm is extended; the control module is used to send a first instruction to the interface module according to the first signal; the interface module is used to transmit the first instruction to the terminal device, so that the terminal device opens the display software according to the first instruction; the detection module is also used to send a second signal to the control module when the lens arm is closed; the control module is also used to send a second instruction to the interface module according to the second signal; the interface module is also used to transmit the second instruction to the terminal device, so that the terminal device closes the display software according to the second instruction.

2. The automatic on-off circuit according to claim 1, wherein The automatic power on / off circuit also includes a button module, which is connected to the control module. After the booth software is opened, the button module is triggered and sends a trigger signal to the control module; The control module is used to send a third instruction to the interface module according to the trigger signal; the interface module is used to transmit the third instruction to the terminal device, so that the terminal device instructs the booth software to take a picture according to the third instruction.

3. The automatic switching circuit according to claim 1 or 2, characterized in that The detection module includes an accelerometer chip, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a second capacitor. The power supply pin of the accelerometer chip is connected to the first end of the first resistor and the first end of the first capacitor, respectively. The input / output power supply pin of the accelerometer chip is connected to the first end of the second capacitor and a first power supply, respectively. An interrupt pin of the accelerometer chip is connected to the first end of the second resistor and the control module, respectively. The data line pin of the accelerometer chip is connected to the first end of the third resistor and the control module, respectively. The clock line pin of the accelerometer chip is connected to the first end of the fourth resistor and the control module, respectively. The second ends of the first resistor, the second resistor, the third resistor, and the fourth resistor are all connected to the first power supply. The second ends of the first capacitor, the second capacitor, the ground pin, and the input / output ground pin of the accelerometer chip are all grounded.

4. The automatic on-off circuit according to claim 2, wherein The control module includes a control chip. The first, second, and third general-purpose input / output pins of the control chip are respectively connected to the detection module. The positive and negative data signal pins of the general-purpose serial bus of the control chip are respectively connected to the interface module. The fourth general-purpose input / output pin of the control chip is connected to the button module. The power supply pin of the control chip is connected to a second power supply. The ground pin of the control chip is grounded.

5. The automatic on-off circuit according to claim 2, wherein The interface module includes a USB interface, a fifth resistor, a third capacitor, a fourth capacitor, a protection diode, a common-mode inductor, and a first ferrite bead. The power pin of the USB interface is connected to the first end of the first ferrite bead and the first end of the protection diode, respectively. The second end of the first ferrite bead is connected to the first end of the fifth resistor, the first end of the third capacitor, the first end of the fourth capacitor, and a third power supply, respectively. The positive data line pin of the USB interface is connected to the second end of the common-mode inductor, and the negative data line pin of the USB interface is connected to the first end of the common-mode inductor. The third and fourth ends of the common-mode inductor are connected to the control module, respectively. The second ends of the third capacitor, the fourth capacitor, the fifth resistor, the protection diode, and the ground pin of the USB interface are all grounded.

6. The automatic on-off circuit according to claim 5, wherein The interface module also includes a protection unit, which is connected to the positive data line pin and the negative data line pin of the USB interface respectively. The protection unit is used to provide electrostatic protection for the positive and negative data line pins of the USB interface.

7. The automatic on-off circuit according to claim 6, wherein The protection unit includes an electrostatic discharge (ESD) protection chip. The power supply pin of the ESD protection chip is connected to a first power supply, the ground pin of the ESD protection chip is grounded, and the two input / output pins of the ESD protection chip are respectively connected to the positive data line pin and the negative data line pin of the USB interface.

8. The automatic on-off circuit of claim 2, wherein The button module includes a button, a sixth resistor, and a fifth capacitor. The first end of the button is connected to the first end of the sixth resistor, the first end of the fifth capacitor, and the control module. The second end of the button and the second end of the fifth capacitor are both grounded. The second end of the sixth resistor is connected to the first power supply.

9. A video kiosk, characterized by, Includes the automatic power on / off circuit as described in any one of claims 1-8.

10. An interactive system, characterized by Includes the video display stand as described in claim 9.

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