Data transmission device of acquisition equipment and acquisition system

Abstract

The utility model discloses a data transmission device of acquisition equipment and an acquisition system, and relates to the technical field of image communication. The data transmission device comprises a first transmission line, a second transmission line and a shell, and further comprises an acquisition equipment connecting port, an image conversion module arranged in the shell, a terminal equipment connecting port, a charging connecting port arranged in the shell and a charging module arranged in the shell. The acquisition equipment connection port is used for connecting acquisition equipment so as to acquire first image data acquired by the acquisition equipment; the image conversion module is connected to the first transmission line and the second transmission line and is used for converting the first image data into second image data; the terminal equipment connection port is used for connecting a second transmission line so as to send the second image data to the terminal equipment; the charging connection port is used for connecting an external power supply; and the charging module is used for connecting the charging connection port and the terminal equipment connection port, so that the external power supply supplies power to the terminal equipment.

Description

Technical Field

[0001] The present application relates to the field of image communication technology, and in particular to a data transmission device and a collection system for collection equipment. Background Art

[0002] At present, the acquisition cards of acquisition devices such as SLR cameras on the market cannot provide power to the acquisition end (such as mobile phones, computers or tablets) while capturing images, which leads to power concerns during the use of the acquisition end devices. In addition, the acquisition devices on the market do not provide HDMI cables, which means that when users need to connect the acquisition devices to terminal devices, they need to bring or purchase HDMI cables. Utility Model Content

[0003] The present application provides a data transmission device and a collection system for a collection device, which can transmit the image of the collection device to a collection terminal and charge the terminal device at the same time.

[0004] In a first aspect, an embodiment provides a data transmission device of a collection device, including a first transmission line, a second transmission line and a housing, and further comprising:

[0005] A collection device connection port, used to connect to a collection device to obtain first image data collected by the collection device;

[0006] An image conversion module built into the housing, connected to the first transmission line and the second transmission line, and used for converting the first image data into second image data;

[0007] A terminal device connection port, connected to the second transmission line, for sending the second image data to the terminal device;

[0008] A charging connection port provided on the housing, for connecting to an external power source;

[0009] The charging module built into the shell is connected to the charging connection port and the terminal device connection port so that an external power source can power the terminal device.

[0010] In one embodiment, the charging module includes a charging control chip, a first connection confirmation circuit, a second connection confirmation circuit and a switch module;

[0011] The charging control chip includes a first confirmation connection pin, a second confirmation connection pin, a first signal output pin and a second signal output pin;

[0012] The first connection confirmation pin is connected to the first connection confirmation circuit to confirm the connection of the terminal device;

[0013] The second connection confirmation pin is connected to the second connection confirmation circuit to confirm the connection of the external power source;

[0014] The first signal output pin and the second signal output pin are connected to the switch module so that an external power source supplies power to the terminal device.

[0015] In one embodiment, the switch module includes a first switch circuit and a second switch circuit;

[0016] The first switch circuit includes a resistor R11, a switch tube Q11, a resistor R12, a resistor R13, a first switch tube chip, a capacitor C11 and a Schottky diode D11;

[0017] The first end of the resistor R11 is connected to the first signal output pin, the second end of the resistor R11 is grounded, the first end of the resistor R11 is also connected to the control end of the switch tube Q11, the first end of the switch tube Q11 is grounded, the second end of the switch tube Q11 is connected to the first end of the resistor R12, the second end of the resistor R12 is connected to the gate pin of the first switch tube chip, the drain pin of the first switch tube chip is connected to the terminal device connection port, the drain pin of the first switch tube chip is also connected to the first end of the capacitor C11, the second end of the capacitor C11 is grounded, the drain pin of the first switch tube chip is also connected to the input end of the Schottky diode D11, the output end of the Schottky diode D11 is connected to the source pin of the first switch tube chip, the source pin of the first switch tube chip is connected to the buck output end, the source pin of the first switch tube chip is also connected to the first end of the resistor R13, and the second end of the resistor R13 is connected to the first end of the resistor R12;

[0018] The second switch circuit includes a resistor R21, a switch tube Q21, a resistor R22, a resistor R23, a second switch tube chip, a capacitor C21 and a Schottky diode D21;

[0019] The first end of the resistor R21 is connected to the second signal output pin, the second end of the resistor R12 is grounded, the first end of the resistor R21 is also connected to the control end of the switch tube Q21, the first end of the switch tube Q21 is grounded, the second end of the switch tube Q21 is connected to the first end of the resistor R22, the second end of the resistor R22 is connected to the gate pin of the second switch tube chip, the drain pin of the second switch tube chip is connected to the charging connection port, the drain pin of the second switch tube chip is also connected to the input end of the Schottky diode D12, the output end of the Schottky diode D12 is connected to the source pin of the second switch tube chip, the source pin of the second switch tube chip is connected to the buck output end, the source pin of the second switch tube chip is also connected to the first end of the resistor R23, the second end of the resistor R23 is connected to the first end of the resistor R22, the first end of the resistor R23 is also connected to the first end of the capacitor C21, and the second end of the capacitor C21 is connected to the second end of the resistor R22.

[0020] In one embodiment, the first connection confirmation circuit includes a resistor R14, a switch tube Q12 and a resistor R15; a first end of the resistor R14 is connected to the terminal device connection port, a second end of the resistor R14 is connected to the first end of the switch tube Q12, a second end of the switch tube Q12 is connected to the interface, a control end of the switch tube Q12 is connected to the first end of the resistor R15, a second end of the resistor R15 is grounded, and the control end of the switch tube Q12 is also connected to the first confirmation connection pin;

[0021] The second connection confirmation circuit includes a resistor R24, a switch tube Q22 and a resistor R25; the first end of the resistor R24 ​​is connected to the charging connection port, the second end of the resistor R24 ​​is connected to the first end of the switch tube Q22, the second end of the switch tube Q22 is connected to the interface, the control end of the switch tube Q22 is connected to the first end of the resistor R25, the second end of the resistor R25 is grounded, and the control end of the switch tube Q22 is also connected to the second confirmation connection pin.

[0022] In one embodiment, the charging control chip further includes a first charging handshake pin and a second charging handshake pin:

[0023] The first charging handshake pin is connected to the terminal device connection port to obtain the charging protocol of the terminal device; the second charging handshake pin is connected to the charging connection port to obtain the charging protocol of the external power source.

[0024] In one embodiment, the charging module also includes a first buck module, the first buck module includes a first buck chip, the voltage input end of the first buck chip is connected to the buck output end, and the power supply output end of the first buck chip is used to power the charging control chip.

[0025] In one embodiment, the image conversion module includes an image conversion chip, and the image conversion chip obtains the first image data and performs format conversion on the first image data to generate the second image data.

[0026] In one embodiment, the image conversion module also includes a second step-down module, the second step-down module includes a second step-down chip, the voltage input end of the second step-down chip is connected to the power supply output end of the first step-down chip, and the power supply output end of the second step-down chip is used to power the image conversion chip.

[0027] In one embodiment, the acquisition device connection port is an HDMI connection port, the terminal device connection port is a Type-C connection port, and the charging connection port is a Type-C connection port.

[0028] In a second aspect, an embodiment provides a collection system, including:

[0029] An acquisition device, wherein the acquisition device is used to acquire first image data;

[0030] A data transmission device, wherein the data transmission device is directly connected to the collection device, and the data transmission device adopts the data transmission device of the collection device in any one of the above embodiments.

[0031] According to the data transmission device and the acquisition system of the acquisition device of the above embodiment, the data transmission device includes an acquisition device connection port, an image conversion module, a terminal device connection port, a charging connection port and a charging module. The data transmission device connects the acquisition device connection port and the terminal device connection port, and the image conversion module can be used to convert the first image data into the second image data and send it to the terminal device. In addition, the terminal device connection port and the charging connection port are connected, so that the terminal device can be powered while the second image data is sent to the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of a module of a data transmission device of a collection device according to an embodiment;

[0033] Figure 2 A schematic diagram of the structure of a data transmission device of a collection device according to an embodiment;

[0034] Figure 3 A schematic diagram of a charging control chip in a data transmission device according to an embodiment of the present invention;

[0035] Figure 4 A circuit connection diagram of a first connection confirmation circuit in a data transmission device according to an embodiment;

[0036] Figure 5A circuit connection diagram of a second connection confirmation circuit in a data transmission device according to an embodiment;

[0037] Figure 6 A circuit connection diagram of a switch module in a data transmission device according to an embodiment;

[0038] Figure 7 A circuit connection diagram of a first voltage reduction module in a data transmission device according to an embodiment;

[0039] Figure 8 A circuit connection diagram of a charging connector in a data transmission device according to an embodiment;

[0040] Fig. 9 A circuit connection diagram of a terminal device connection port in a data transmission device of an embodiment;

[0041] Fig.10 A circuit connection diagram of a collection device connection port in a data transmission device of an embodiment;

[0042] Fig.11 A schematic diagram of an image conversion chip in a data transmission device according to an embodiment;

[0043] Fig.12 A circuit connection diagram of a Flash circuit in a data transmission device according to an embodiment;

[0044] Fig.13 A schematic diagram of a module of a collection system according to another embodiment. DETAILED DESCRIPTION

[0045] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0046] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0047] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0048] Please refer to Figure 1 and Figure 2 The present application provides a data transmission device for a collection device, which includes a collection device connection port 100, a first transmission line 110, a terminal device connection port 200, a second transmission line 210, a charging connection port 300, an image conversion module 400, a charging module 500 and a housing 600. The collection device connection port 100 is connected to the collection device to obtain the first image data collected by the collection device lock, and the collection device connection port is connected to the housing 600 through the first transmission line 110. The image conversion module 400 and the charging module 500 are built into the housing 600, and the terminal device connection port 200 is connected to the housing 600 through the second transmission line 210 to obtain the second image data converted by the image conversion module 400 from the first image data. The charging connection port 300 is arranged on the housing to power the terminal device through the charging module 500 and the second transmission line 210. Among them, the collection device adopts a hardware device such as a SLR that includes a camera or photo function, the terminal device adopts a hardware device such as a mobile phone or a tablet, and the external power supply adopts a hardware device such as an adapter.

[0049] The image transmission function and the charging function of the data transmission device are described below respectively.

[0050] In one embodiment, when the data transmission device only performs the charging function:

[0051] In one embodiment, the charging module 500 includes a charging control chip 510 , a first connection confirmation circuit 520 , a second connection confirmation circuit 530 , a switch module 540 and a first voltage reduction module 550 .

[0052] Please refer to Figure 3 In one embodiment, the charging control chip 510 uses a GL9510 chip, including a first confirmation pin (i.e. Figure 3 GPIO_3 pin in the second confirmation pin (that is, Figure 3GPIO_2 pin in the charging handshake pin (i.e. Figure 3 The CC1 pin in the charging handshake pin (i.e. Figure 3 DFP_CC1 pin and DFP_CC1 pin in the first signal output pin (i.e. Figure 3 GPIO_1 pin in the GPIO_1 pin) and the second signal output pin (that is, Figure 3 GPIO_0 pin in the .

[0053] In one embodiment, the first confirmation pin is connected to the first connection confirmation circuit 520 for determining that the terminal device is connected.

[0054] Please refer to Figure 4 The first connection confirmation circuit 520 includes a resistor R14, a switch tube Q12 and a resistor R15, wherein the switch tube Q12 is a MOS tube. The first end of the resistor R14 is connected to the terminal device connection port 200 (i.e. Figure 4 The second end of the resistor R14 is connected to the first end of the MOS tube Q12, the second end of the MOS tube Q12 is connected to the interface, the control end of the MOS tube Q12 is connected to the first end of the resistor R15, the second end of the resistor R15 is grounded, and the control end of the MOS tube Q12 is connected to the first confirmation connection pin.

[0055] In one embodiment, the second confirmation pin is connected to the second connection confirmation circuit 530 for determining whether the external power source is connected.

[0056] Please refer to Figure 5 The second connection confirmation circuit 530 includes a resistor R24, a switch tube Q22 and a resistor R25, wherein the switch tube Q22 is a MOS tube. The first end of the resistor R24 ​​is connected to the charging connection port 300 (i.e. Figure 5 The second end of the resistor R24 ​​is connected to the first end of the MOS tube Q22, the second end of the MOS tube Q22 is connected to the interface, the control end of the MOS tube Q22 is connected to the first end of the resistor R25, the second end of the resistor R25 is grounded, and the control end of the MOS tube Q22 is also connected to the second confirmation connection pin.

[0057] After the terminal device and the external power source are connected respectively through the first confirmation pin and the second confirmation pin, the first charging handshake pin is connected to the terminal device connection port to obtain the charging protocol of the terminal device; the second charging handshake pin is connected to the charging connection port to obtain the charging protocol of the external power source. After the charging protocol of the terminal device and the charging protocol of the external power source are handshaked, the external power source can supply power to the terminal device. At this time, the charging control chip 510 controls the first signal output pin and the second signal output pin to output a conduction signal to close the switch module 540, thereby completing the external power supply to the terminal device.

[0058] Please refer to Figure 6 In one embodiment, the switch module 540 includes a first switch circuit 541 and a second switch circuit 542 .

[0059] In one embodiment, the first switch circuit 541 includes a resistor R11, a switch tube Q11, a resistor R12, a resistor R13, a first switch tube chip, a capacitor C11 and a Schottky diode D11, wherein the switch tube Q11 is a MOS tube, and the first switch tube chip is a first MOS tube chip. The first end of the resistor R11 is connected to the first signal output pin, the second end of the resistor R11 is grounded, the first end of the resistor R11 is also connected to the control end of the MOS tube Q11, the first end of the MOS tube Q11 is grounded, the second end of the MOS tube Q11 is connected to the first end of the resistor R12, the second end of the resistor R12 is connected to the gate pin of the first MOS tube chip, and the drain pin of the first MOS tube chip is connected to the terminal device connection port (i.e. Figure 6 The drain pin of the first MOS tube chip is also connected to the first end of the capacitor C11, the second end of the capacitor C11 is grounded, the drain pin of the first MOS tube chip is also connected to the input end of the Schottky diode D11, the output end of the Schottky diode D11 is connected to the source pin of the first MOS tube chip, and the source pin of the first MOS tube chip is connected to the buck output end (i.e. Figure 6 The source pin of the first MOS transistor chip is also connected to the first end of the resistor R13, and the second end of the resistor R13 is connected to the first end of the resistor R12. The first MOS transistor chip adopts the AD30P47D3 chip.

[0060] In one embodiment, the second switch circuit 542 includes a resistor R21, a switch tube Q21, a resistor R22, a resistor R23, a second switch tube chip, a capacitor C21 and a Schottky diode D21, wherein the switch tube Q21 adopts a MOS tube and the second switch tube chip adopts a second MOS tube chip.

[0061] The first end of the resistor R21 is connected to the second signal output pin, the second end of the resistor R12 is grounded, the first end of the resistor R21 is also connected to the control end of the MOS tube Q21, the first end of the MOS tube Q21 is grounded, the second end of the MOS tube Q21 is connected to the first end of the resistor R22, the second end of the resistor R22 is connected to the gate pin of the second MOS tube chip, and the drain pin of the second MOS tube chip is connected to the charging connection port (i.e. Figure 6The drain pin of the second MOS tube chip is also connected to the input end of the Schottky diode D12, the output end of the Schottky diode D12 is connected to the source pin of the second MOS tube chip, and the source pin of the second MOS tube chip is connected to the buck output end (i.e. Figure 6 The source pin of the second MOS transistor chip is also connected to the first end of the resistor R23, the second end of the resistor R23 is connected to the first end of the resistor R22, the first end of the resistor R23 is also connected to the first end of the capacitor C21, and the second end of the capacitor C21 is connected to the second end of the resistor R22. The second MOS transistor chip adopts the AD30P47D3 chip.

[0062] After the switch module 540 is turned on, the external power supply starts to power the terminal device. The charging voltage provided by the external power supply is 20V and the charging current is 5A. Since the charging voltage is relatively large, a first step-down module 550 is connected to the switch module 540 to step down the charging voltage to a working voltage of 5V and 1A to power the charging control chip 510.

[0063] Please refer to Figure 7 In one embodiment, the first buck module 550 includes a first buck chip, the first buck chip uses an ETA3485 chip, and the voltage input terminal of the first buck chip (i.e. Figure 7 The voltage input end of the first buck chip is also connected to the first end of the capacitor C12, and the second end of the capacitor C12 is grounded. The voltage input end of the first buck chip is also connected to the first end of the capacitor C13, and the second end of the capacitor C13 is grounded. The voltage input end of the first buck chip is also connected to the first end of the resistor R16, and the second end of the resistor R16 is connected to the driving pin of the first buck chip (i.e. Figure 7 The EN pin in the first buck chip. Figure 7 The BST pin in the circuit) is connected to the first end of the capacitor C14, and the second end of the capacitor C14 is connected to the power supply output end of the first buck chip (i.e. Figure 7 The power supply output end is connected to the first end of the inductor L11, the second end of the inductor L11 is connected to the first end of the resistor R17, the second end of the resistor R17 is connected to the first end of the resistor R18, the second end of the resistor R18 is grounded, and the second end of the resistor R17 is also connected to the output feedback pin of the first buck chip (i.e. Figure 7 The second end of the inductor L11 is also connected to the first end of the capacitor C15, the second end of the capacitor C15 is connected to the second end of the resistor R17, and the second end of the inductor L11 is also connected to the voltage output terminal (i.e. Figure 7The voltage output end is connected to the first end of the capacitor C16, the second end of the capacitor C16 is grounded, the voltage output end is also connected to the first end of the capacitor C17, the second end of the capacitor C17 is grounded, the voltage output end is also connected to the output end of the Zener diode D12, and the input end of the Zener diode D12 is grounded.

[0064] Please refer to Figure 8 In one embodiment, the charging connector 300 uses a Type-C interface, which uses Figure 8 In the USB interface socket shown, the charging connector 300 uses pins CC1 and CC2 to connect to the second charging handshake pin respectively, and the charging connector 300 uses pins VBUS1, VBUS2, VBUS3, and VBUS4 to connect to the DFP_VBUS_5A pin in the switch module 540, so that the charging current of the external power supply is delivered to the terminal device through the switch module 540. The charging connector 300 also uses pins D+1, D-1, D+2, and D-2 to exchange data with the charging control chip 510.

[0065] Please refer to Fig. 9 In one embodiment, the terminal device connection port 200 adopts a Type-C interface, which adopts Fig. 9 The socket for welding the USB cable shown, the terminal device connection port 200 uses the pin CC1 to connect to the first charging handshake pin, and the terminal device connection port 200 uses the pin VBUS to connect to the UFP_VBUS_5A pin in the switch module 540 to obtain the charging current to charge the terminal device.

[0066] In one embodiment, when the data transmission device only performs the image transmission function:

[0067] Please refer to Fig.10 In one embodiment, the acquisition device connection port 100 uses an HDMI interface, which uses Fig.10 The pad used for welding the HDMI spring wire shown uses the HDMI interface to obtain the first image data collected by the acquisition device, and sends the first image data to the image conversion module 400 to convert the first image data into the second image data in the format of the terminal device connection port 200, thereby transmitting it to the terminal device for image display.

[0068] In one embodiment, the image conversion module 400 includes an image conversion chip 410 , a second voltage reduction module 420 , and an animation module 430 .

[0069] Please refer to Fig.11In one embodiment, the image conversion chip 410 adopts the MS2130 chip, and the pins HDMIRX0P, HDMIRX0N, HDMIRX1P, HDMIRX1N, HDMIRX2P, HDMIRX2N, HDMIRXHPD, HDMIRXDET, RXDDCSCL and RXDDCSDA of the MS2130 chip are respectively connected to the acquisition device connection port 100 to obtain the first image data of the terminal device, and generate the second image data through the image conversion chip 410.

[0070] Please refer to Fig. 9 and Fig.11 The terminal device connection port 200 uses pin TX1+, pin TX1-, pin RX1+ and pin RX1- to respectively connect to pins SSTXM, pin SSTXP, pin SSRXM and pin SSRXP in the image conversion chip 410 to obtain the generated second image data for image display.

[0071] In one embodiment, the second step-down module 420 includes a second step-down chip. The second step-down chip also uses the ETA3485 chip, which can reduce the operating voltage of 5V to an operating voltage of 1.1V or 3.3V to power the image conversion chip 410. The step-down circuit it uses is also similar to the circuit used by the first step-down chip. It only needs to change the resistance value of the resistor or the capacitance value of the capacitor external to the first step-down chip, or connect a resistor or capacitor in parallel in the circuit external to the first step-down chip that can reduce the voltage to the corresponding operating voltage.

[0072] Please refer to Fig.12 In one embodiment, the animation module 430 uses a Flash circuit to read and store the first image data, and the pins / CS, DO, CLK and SPIMOSI in the Flash circuit are respectively connected to the pins SPICS, SPIMISO, SPISCLK and SPIMOSI in the image conversion chip 410 to configure the functions in the image conversion chip 410.

[0073] In one embodiment, the data transmission device can perform a charging function while performing an image transmission function. When performing the image transmission function, the pin CC1 of the terminal device connection port 200 does not work. When the charging connection port 300 is used to power the terminal device while performing the image transmission function, the pin of the terminal device connection port 200 is connected to the first charging handshake pin, and a charging agreement is reached at this time. Then, the pin VBUS of the terminal device connection port 200 is used to obtain a charging voltage to complete the image transmission while powering the terminal device.

[0074] Please refer to Fig.13In another embodiment, an acquisition system is also provided, which includes an acquisition device and a data transmission device. The acquisition device is used to obtain the first image data, and the data transmission device is connected to the acquisition device. Since the data transmission device provided in the present application can directly convert HDMI data into Type-C data, the data transmission device of the present application can be directly connected to the acquisition device to perform image data transmission and charging at the same time, without the need for an additional HDMI conversion device.

[0075] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A data transmission device for a collection device, comprising a first transmission line, a second transmission line and a housing, characterized in that: Also includes: A collection device connection port, used to connect to a collection device to obtain first image data collected by the collection device; An image conversion module built into the housing, connected to the first transmission line and the second transmission line, and used for converting the first image data into second image data; A terminal device connection port, connected to the second transmission line, for sending the second image data to the terminal device; A charging connection port provided on the housing, for connecting to an external power source; The charging module built into the shell is connected to the charging connection port and the terminal device connection port so that an external power source can power the terminal device.

2. The data transmission device of the acquisition device according to claim 1, characterized in that: The charging module includes a charging control chip, a first connection confirmation circuit, a second connection confirmation circuit and a switch module; The charging control chip includes a first confirmation connection pin, a second confirmation connection pin, a first signal output pin and a second signal output pin; The first connection confirmation pin is connected to the first connection confirmation circuit to confirm the connection of the terminal device; The second connection confirmation pin is connected to the second connection confirmation circuit to confirm the connection of the external power source; The first signal output pin and the second signal output pin are connected to the switch module so that an external power source supplies power to the terminal device.

3. The data transmission device of the acquisition device according to claim 2, characterized in that: The switch module includes a first switch circuit and a second switch circuit; The first switch circuit includes a resistor R11, a switch tube Q11, a resistor R12, a resistor R13, a first switch tube chip, a capacitor C11 and a Schottky diode D11; The first end of the resistor R11 is connected to the first signal output pin, the second end of the resistor R11 is grounded, the first end of the resistor R11 is also connected to the control end of the switch tube Q11, the first end of the switch tube Q11 is grounded, the second end of the switch tube Q11 is connected to the first end of the resistor R12, the second end of the resistor R12 is connected to the gate pin of the first switch tube chip, the drain pin of the first switch tube chip is connected to the terminal device connection port, the drain pin of the first switch tube chip is also connected to the first end of the capacitor C11, the second end of the capacitor C11 is grounded, the drain pin of the first switch tube chip is also connected to the input end of the Schottky diode D11, the output end of the Schottky diode D11 is connected to the source pin of the first switch tube chip, the source pin of the first switch tube chip is connected to the buck output end, the source pin of the first switch tube chip is also connected to the first end of the resistor R13, and the second end of the resistor R13 is connected to the first end of the resistor R12; The second switch circuit includes a resistor R21, a switch tube Q21, a resistor R22, a resistor R23, a second switch tube chip, a capacitor C21 and a Schottky diode D21; The first end of the resistor R21 is connected to the second signal output pin, the second end of the resistor R12 is grounded, the first end of the resistor R21 is also connected to the control end of the switch tube Q21, the first end of the switch tube Q21 is grounded, the second end of the switch tube Q21 is connected to the first end of the resistor R22, the second end of the resistor R22 is connected to the gate pin of the second switch tube chip, the drain pin of the second switch tube chip is connected to the charging connection port, the drain pin of the second switch tube chip is also connected to the input end of the Schottky diode D12, the output end of the Schottky diode D12 is connected to the source pin of the second switch tube chip, the source pin of the second switch tube chip is connected to the buck output end, the source pin of the second switch tube chip is also connected to the first end of the resistor R23, the second end of the resistor R23 is connected to the first end of the resistor R22, the first end of the resistor R23 is also connected to the first end of the capacitor C21, and the second end of the capacitor C21 is connected to the second end of the resistor R22.

4. The data transmission device of the acquisition device according to claim 2, characterized in that: The first connection confirmation circuit includes a resistor R14, a switch tube Q12 and a resistor R15; the first end of the resistor R14 is connected to the terminal device connection port, the second end of the resistor R14 is connected to the first end of the switch tube Q12, the second end of the switch tube Q12 is connected to the interface, the control end of the switch tube Q12 is connected to the first end of the resistor R15, the second end of the resistor R15 is grounded, and the control end of the switch tube Q12 is also connected to the first confirmation connection pin; The second connection confirmation circuit includes a resistor R24, a switch tube Q22 and a resistor R25; the first end of the resistor R24 ​​is connected to the charging connection port, the second end of the resistor R24 ​​is connected to the first end of the switch tube Q22, the second end of the switch tube Q22 is connected to the interface, the control end of the switch tube Q22 is connected to the first end of the resistor R25, the second end of the resistor R25 is grounded, and the control end of the switch tube Q22 is also connected to the second confirmation connection pin.

5. The data transmission device of the acquisition device according to claim 2, characterized in that: The charging control chip also includes a first charging handshake pin and a second charging handshake pin: The first charging handshake pin is connected to the terminal device connection port to obtain the charging protocol of the terminal device; the second charging handshake pin is connected to the charging connection port to obtain the charging protocol of the external power source.

6. The data transmission device of the acquisition device according to claim 3, characterized in that: The charging module also includes a first buck module, which includes a first buck chip, a voltage input end of the first buck chip is connected to the buck output end, and a power supply output end of the first buck chip is used to supply power to the charging control chip.

7. The data transmission device of the acquisition device according to claim 6, characterized in that: The image conversion module includes an image conversion chip, and the image conversion chip obtains the first image data and performs format conversion on the first image data to generate the second image data.

8. The data transmission device of the acquisition device according to claim 7, characterized in that: The image conversion module also includes a second buck module, which includes a second buck chip, a voltage input end of the second buck chip is connected to a power supply output end of the first buck chip, and the power supply output end of the second buck chip is used to power the image conversion chip.

9. The data transmission device of the acquisition device according to claim 1, characterized in that: The acquisition device connection port is an HDMI connection port, the terminal device connection port is a Type-C connection port, and the charging connection port is a Type-C connection port.

10. A collection system, characterized in that: include: An acquisition device, wherein the acquisition device is used to acquire first image data; A data transmission device, wherein the data transmission device is directly connected to the collection device, and the data transmission device adopts the data transmission device of the collection device as described in any one of claims 1-9.

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