Image acquisition card and data signal transmission system

Abstract

An embodiment of the present application provides an image acquisition card and a data signal transmission system, which relate to the field of machine vision technology. The image acquisition card includes: a connection module and a main control module, the connection module includes a first board-end connector and a second board-end connector; when the image acquisition card is in dual-base mode, one end of the first board-end connector is connected to the main control module, and the other end is used to connect to the first camera-end connector of a first camera through a cable, and is used to transmit the control signal for the first camera output by the main control module to the first camera, and transmit the image data and receipt signal input by the first camera to the main control module; one end of the second board-end connector is connected to the main control module, and the other end is used to connect to the first camera-end connector of a second camera through a cable; and is used to transmit the control signal for the second camera output by the main control module to the second camera, and transmit the image data and receipt signal input by the second camera to the main control module.

Description

Technical Field

[0001] The present application relates to the field of machine vision technology, and in particular to an image acquisition card and a data signal transmission system. Background Art

[0002] Camera Link, abbreviated as CML, is a serial communication protocol specifically designed for machine vision applications. The CML standard specifies the interface between digital cameras and image acquisition cards, using a unified physical connector and pin definition, allowing any digital camera and image acquisition card that complies with the Camera Link standard to be physically interconnected. In addition, CML also specifies four different camera modes: BASE, Medium, Full, and 80-bit. Medium, Full, and 80-bit are all single-channel camera modes, while BASE is a dual-channel camera mode. In related technologies, a connection module of an image acquisition card can only connect to one camera. In single-channel camera mode, one image acquisition card is required to connect to one camera through the connection module's interface. In dual-channel camera mode, two image acquisition cards are required to connect to two cameras respectively, or two connection modules of an image acquisition card are required to connect to two cameras respectively. As a result, when there are many camera channels, more connection module resources will be occupied. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide an image acquisition card and a data signal transmission system to reduce the resource usage of the connection module. The specific technical solution is as follows:

[0004] In a first aspect, an embodiment of the present application provides an image acquisition card, comprising: a main control module and at least one connection module, wherein the connection module comprises a first card-end connector and a second card-end connector;

[0005] When the image acquisition card is in dual-base mode, one end of the first board-side connector is connected to the main control module, and the other end of the first board-side connector is used to connect to the first camera-side connector of the first camera through a cable;

[0006] The first board-end connector is used to transmit the control signal for the first camera output by the main control module to the first camera, and to transmit the image data and receipt signal input by the first camera to the main control module;

[0007] One end of the second card-side connector is connected to the main control module, and the other end of the second card-side connector is used to connect to the first camera-side connector of the second camera through a cable;

[0008] The second board-end connector is used to transmit the control signal for the second camera output by the main control module to the second camera, and to transmit the image data and receipt signal input by the second camera to the main control module.

[0009] In one embodiment of the present application,

[0010] The second card-side connector and the first camera-side connector of the second camera both include a plurality of pins, the main control module includes a plurality of pin differential pairs, one end of the pins of the second card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the second camera via a cable;

[0011] The first pin of the second card-side connector is used to transmit the CC signal for the second camera output by the main control module to the second camera, wherein the pin differential pair connected to the first pin of the second card-side connector is configured in a differential output mode;

[0012] The second pin of the second board-end connector is used to transmit the Xlink signal input by the second camera to the main control module;

[0013] The third pin of the second card-side connector is used to transmit the SerTC+ / - signal for the second camera output by the main control module to the second camera, wherein the pin differential pair connected to the third pin of the second card-side connector is configured in a differential output mode;

[0014] The fourth pin of the second board-end connector is used to transmit the SerTFG+ / - signal input by the second camera to the main control module.

[0015] In one embodiment of the present application,

[0016] The second card-end connector and the first camera-end connector of the second camera each include 26 pins, each of the pins having a line sequence of 1-26; each of the pin differential pairs of the main control module includes pin differential pair 17, pin differential pair 19, pin differential pair 20, pin differential pair 21, and pin differential pair 22, all of which are configured in differential output mode;

[0017] The first pins of the second card end connector include pin 18, pin 17, pin 16, pin 15, pin 5, pin 4, pin 3, and pin 2;

[0018] One ends of pins 18, 17, 16, and 15 of the second board-end connector are respectively connected to pins 9, 10, 11, and 12 of the first camera-end connector of the second camera, and the other ends are respectively connected to the 19N-output of the pin differential pair 19, the 20N-output of the pin differential pair 20, the 21N-output of the pin differential pair 21, and the 22N-output of the pin differential pair 22 of the main control module, for transmitting the CC1- signal, CC2+ signal, CC3- signal, and CC4+ signal output by the main control module for the second camera to the second camera;

[0019] One ends of pins 5, 4, 3, and 2 of the second board-end connector are respectively connected to pins 22, 23, 24, and 25 of the first camera-end connector of the second camera, and the other ends are respectively connected to the 19P-output of the pin differential pair 19, the 20P-output of the pin differential pair 20, the 21P-output of the pin differential pair 21, and the 22P-output of the pin differential pair 22 of the main control module, for transmitting the CC1+ signal, CC2- signal, CC3+ signal, and CC4- signal output by the main control module for the first camera to the second camera;

[0020] The second pins of the second card end connector include pin 25, pin 24, pin 23, pin 22, pin 21, pin 12, pin 11, pin 10, pin 9, and pin 8;

[0021] Pins 25, 24, 23, 22, and 21 of the second board-side connector are respectively connected to pins 2, 3, 4, 5, and 6 of the first camera-side connector of the second camera, for transmitting the X0-signal, X1-signal, X2-signal, XCK-signal, and X3-signal input by the second camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-side connector are respectively connected to pins 15, 16, 17, 18, and 19 of the first camera-side connector of the second camera, for transmitting the X0+signal, X1+signal, X2+signal, XCK+signal, and X3+signal input by the second camera to the main control module;

[0022] The third pin of the second card-side connector includes pin 20 and pin 7; one end of pin 20 and pin 7 of the second card-side connector is respectively connected to pin 7 and pin 20 of the first camera-side connector of the second camera, and the other end is respectively connected to the 17N-output and 17P-output of the pin differential pair 17 of the main control module, for transmitting the SerTC+ / - signal for the second camera output by the main control module to the second camera;

[0023] The fourth pin of the second board-end connector includes pin 19 and pin 6; pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the first camera-end connector of the second camera, for transmitting the SerTFG+ / - signal input by the second camera to the main control module.

[0024] In one embodiment of the present application,

[0025] The first card-side connector and the first camera-side connector of the first camera both include a plurality of pins, and the main control module includes a plurality of pin differential pairs. One end of the pins of the first card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the first camera via a cable;

[0026] The first pin of the first board-end connector is used to transmit the CC signal for the first camera output by the main control module to the first camera;

[0027] The second pin of the first board-end connector is used to transmit the Xlink signal input by the first camera to the main control module;

[0028] The third pin of the first board-end connector is used to transmit the SerTC+ / - signal for the first camera output by the main control module to the first camera, and the fourth pin of the first board-end connector is used to transmit the SerTFG+ / - signal input by the first camera to the main control module.

[0029] In one embodiment of the present application,

[0030] When the image acquisition card is in a non-BASE mode, one end of the first board-side connector is connected to the main control module, and the other end of the first board-side connector is used to connect to the first camera-side connector of the third camera through a cable;

[0031] The first board-end connector is configured to transmit a control signal for the third camera output by the main control module to the third camera, and to transmit image data and a receipt signal input by the third camera to the main control module;

[0032] One end of the second card-side connector is connected to the main control module, and the other end of the second card-side connector is used to connect to the second camera-side connector of the third camera through a cable;

[0033] The second board-end connector is used to transmit the image data input by the third camera to the main control module.

[0034] In one embodiment of the present application,

[0035] The second card-end connector and the second camera-end connector of the third camera both include a plurality of pins, the main control module includes a plurality of pin differential pairs, one end of the pins of the second card-end connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the second camera-end connector of the third camera via a cable;

[0036] The first pin and the fourth pin of the second board-end connector are used to transmit the Zlink signal input by the third camera to the main control module, and the second pin of the second board-end connector is used to transmit the Ylink signal input by the third camera to the main control module, wherein the pin differential pair connected to the first pin of the second board-end connector is configured in differential input mode.

[0037] In one embodiment of the present application,

[0038] The second card-end connector and the second camera-end connector of the third camera each include 26 pins, each of which has a line sequence of 1-26; the main control module includes a matching resistor, and each of the pin differential pairs includes pin differential pair 17, pin differential pair 19, pin differential pair 20, pin differential pair 21, and pin differential pair 22, all of which are configured in differential input mode;

[0039] The first pins of the second card end connector include pin 18, pin 17, pin 16, pin 15, pin 5, pin 4, pin 3, and pin 2;

[0040] One ends of pins 18, 17, 16, and 15 of the second board-end connector are respectively connected to pins 9, 10, 11, and 12 of the second camera-end connector of the third camera, and the other ends are respectively connected to the 19N-input of the pin differential pair 19, the 20N-input of the pin differential pair 20, the 21N-input of the pin differential pair 21, and the 22N-input of the pin differential pair 22 of the main control module, for transmitting the Z1-signal, Z2-signal, ZCK-signal, and Z3-signal input by the third camera to the main control module;

[0041] One ends of pins 5, 4, 3, and 2 of the second board-end connector are respectively connected to pins 22, 23, 24, and 25 of the second camera-end connector of the third camera, and the other ends are respectively connected to the 19P-input of the pin differential pair 19, the 20P-input of the pin differential pair 20, the 21P-input of the pin differential pair 21, and the 22P-input of the pin differential pair 22 of the main control module, for transmitting the Z1+ signal, Z2+ signal, ZCK+ signal, and Z3+ signal input by the third camera to the main control module;

[0042] The second pins of the second card end connector include pin 25, pin 24, pin 23, pin 22, pin 21, pin 12, pin 11, pin 10, pin 9, and pin 8;

[0043] Pins 25, 24, 23, 22, and 21 of the second board-end connector are respectively connected to pins 2, 3, 4, 5, and 6 of the second camera-end connector of the third camera, for transmitting the Y0-signal, Y1-signal, Y2-signal, YCK-signal, and Y3-signal input by the third camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-end connector are respectively connected to pins 15, 16, 17, 18, and 19 of the second camera-end connector of the third camera, for transmitting the Y0+signal, Y1+signal, Y2+signal, YCK+signal, and Y3+signal input by the third camera to the main control module;

[0044] The fourth pin of the second board-end connector includes pin 19 and pin 6; pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the second camera-end connector of the third camera, for transmitting the Z0+ and Z0- signals input by the third camera to the main control module.

[0045] In one embodiment of the present application,

[0046] The first card-side connector and the first camera-side connector of the third camera both include a plurality of pins, and the main control module includes a plurality of pin differential pairs. One end of the pins of the first card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the third camera via a cable;

[0047] The first pin of the first board-end connector is used to transmit the CC signal for the third camera output by the main control module to the third camera;

[0048] The second pin of the first board-end connector is used to transmit the Xlink signal input by the third camera to the main control module.

[0049] In one embodiment of the present application, the main control module is further used to configure the pins of the image acquisition card according to the correspondence between the pins and the signals in any one of the above items when the mode of the image acquisition card is switched to the dual BASE mode; and to configure the pins of the image acquisition card according to the correspondence between the pins and the signals in any one of the above items when the mode of the image acquisition card is switched to the non-BASE mode.

[0050] In a second aspect, an embodiment of the present application provides a data signal transmission system, comprising: a first camera, a second camera, and an image acquisition card;

[0051] The first camera and the second camera each include a first camera-end connector and a second camera-end connector, and the image acquisition card is the image acquisition card described in any one of the above items;

[0052] The first camera-end connector of the first camera is connected to the first card-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the first camera, and inputs the image data and receipt signal acquired by the first camera to the image acquisition card;

[0053] The first camera-end connector of the second camera is connected to the second board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the second camera, and inputs the image data and receipt signal acquired by the second camera to the image acquisition card;

[0054] The second camera end connectors of the first camera and the second camera are suspended in the air.

[0055] In a third aspect, an embodiment of the present application provides a data signal transmission system, comprising: a third camera and an image acquisition card;

[0056] The third camera includes a first camera-end connector and a second camera-end connector, and the image acquisition card is the image acquisition card described in any one of the above items;

[0057] The first camera-end connector of the third camera is connected to the first board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the third camera, and inputs the image data and receipt signal acquired by the third camera to the image acquisition card;

[0058] The second camera-end connector of the third camera is connected to the second board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the third camera, and inputs the image data acquired by the third camera to the image acquisition card.

[0059] Beneficial effects of the embodiments of the present application:

[0060] The image acquisition card provided in the embodiment of the present application realizes that two cameras can be simultaneously connected to one connection module of the image acquisition card in dual BASE mode through the connection module and the main control module, thereby reducing the occupation of connection module resources.

[0061] Of course, it is not necessary to achieve all the advantages described above at the same time when implementing any product or method of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0063] Figure 1 A schematic structural diagram of the first image acquisition card provided in an embodiment of the present application;

[0064] Figure 2 A schematic structural diagram of a second image acquisition card provided in an embodiment of the present application;

[0065] Figure 3 A schematic structural diagram of a third image acquisition card provided in an embodiment of the present application;

[0066] Figure 4 A schematic structural diagram of a fourth image acquisition card provided in an embodiment of the present application;

[0067] Figure 5 This is an example diagram of the pin connection relationship of a dual-channel BASE mode and a single-channel Medium / Full / 80-bit mode provided in an embodiment of the present application;

[0068] Figure 6 This is an example diagram of the configuration change of an image acquisition card provided in an embodiment of the present application when switching from FULL mode to dual BASE mode;

[0069] Figure 7-1 A schematic structural diagram of a data signal transmission system provided in an embodiment of the present application;

[0070] Figure 7-2 This is an example diagram of data signal transmission of the first data signal transmission system provided in an embodiment of the present application;

[0071] Figure 8 This is an example diagram of data signal transmission of the second data signal transmission system provided in an embodiment of the present application;

[0072] Figure 9 This is an example diagram of a practical application connection of a data signal transmission system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0073] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field based on this application are within the scope of protection of this application.

[0074] In the related art, one image acquisition card can only be connected to one camera. In single-channel camera mode, one image acquisition card is required to connect to one camera through an interface. In dual-channel camera mode, two image acquisition cards are required to connect to two cameras respectively, which brings inconvenience to the switching of camera modes. This application provides an image acquisition card and a data signal transmission system.

[0075] First, the professional terms mentioned in this application are explained.

[0076] Camera Link (CML) is a serial communication protocol specifically designed for machine vision applications. The CML standard specifies the interface configuration between digital cameras and frame grabbers, using a unified physical connector and pinout. The CML standard includes Lite mode, Base mode, Medium mode, Full mode, and 80-bit mode.

[0077] Among them, BASE mode means that the image acquisition card uses only one connector to communicate with one camera through a cable connection, supporting a maximum bit width of 24 bits. Dual-BASE mode means that the image acquisition card uses two connectors, each of which communicates with one camera through a cable connection. Although the image acquisition card is connected to two cameras through two connectors, the two cameras communicate in BASE mode. Similarly, multi-BASE mode means that the image acquisition card is connected to one camera through multiple connectors, each of which communicates in BASE mode.

[0078] In addition, Full mode means that the image acquisition card uses two connectors to communicate with a camera through a cable connection, supporting a maximum bit width of 64 bits; Medium mode means that the image acquisition card uses two connectors to communicate with a camera through a cable connection, supporting a maximum bit width of 48 bits; 80-bit mode means that the image acquisition card uses two connectors to communicate with a camera through a cable connection, supporting a maximum bit width of 80 bits.

[0079] The following describes this in detail through specific embodiments.

[0080] like Figure 1As shown, an embodiment of the present application provides a structural diagram of a first image acquisition card, including: at least one connection module and a main control module, the connection module including a first card end connector and a second card end connector;

[0081] When the image acquisition card is in dual-base mode, one end of the first board-side connector is connected to the main control module, and the other end of the first board-side connector is used to connect to the first camera-side connector of the first camera through a cable;

[0082] The first board-end connector is used to transmit the control signal for the first camera output by the main control module to the first camera, and to transmit the image data and receipt signal input by the first camera to the main control module;

[0083] One end of the second card-side connector is connected to the main control module, and the other end of the second card-side connector is used to connect to the first camera-side connector of the second camera through a cable;

[0084] The second board-end connector is used to transmit the control signal for the second camera output by the main control module to the second camera, and to transmit the image data and receipt signal input by the second camera to the main control module.

[0085] The image acquisition card is a Camera Link (compliant with the Camera Link standard) acquisition card. Both the first and second board-side connectors are Camera Link connectors located on the board side, connected to the main control module via Camera Link 0 (Link 0, Connector 0) and Camera Link 1 (Link 1, Connector 1), respectively. The main control module includes the image acquisition card's processor, specifically an FPGA (Field Programmable Gate Array) processor. The FPGA processor's pins are configurable, enabling the main control module to configure and switch between dual-channel BASE mode and single-channel Medium / Full / 80-bit mode.

[0086] Dual-BASE mode refers to a dual-camera mode. The camera mode is configured through the main control module. The first camera and the second camera are two cameras connected to the image acquisition card simultaneously in dual-BASE mode. The first camera-end connector of the first camera and the first camera-end connector of the second camera are both Camera Link connectors located at the camera end. They are connected to the first board-end connector and the second board-end connector through Camera Link 0 (Link 0, Connector 0) of the first camera and Camera Link 0 (Link 0, Connector 0) of the second camera, respectively. These are the main links used for serial port communication enumeration in the CML protocol.

[0087] The control signals output by the main control module include control instructions, serial port signals, configuration signals, etc. output by the main control module for the first camera and the second camera respectively. The image data input by the first camera and the second camera is the image data collected by the first camera and the second camera, which is input to the main control module for processing. The receipt signal is the feedback signal of the first camera and the second camera for the control signal output by the main control module.

[0088] When the image acquisition card is in dual-base mode, the other end of the first board-end connector of the image acquisition card, one end of which is connected to the main control module, is used to connect to the first camera via a cable, transmit the control signal output by the main control module for the first camera to the first camera, and transmit the image data and receipt signal collected and input by the first camera to the main control module for processing; the other end of the second board-end connector of the image acquisition card, one end of which is connected to the main control module, is used to connect to the second camera via a cable, transmit the control signal output by the main control module for the second camera to the second camera, and transmit the image data and receipt signal collected and input by the second camera to the main control module for processing.

[0089] The image acquisition card includes one or more connection modules, each of which includes two connectors: a first card-side connector and a second card-side connector. Each connection module can connect to two cameras, and the connection relationship between each connection module and the two cameras is consistent. Therefore, when the image acquisition card is in dual-base mode, the image acquisition card can connect to two cameras (a first camera and a second camera) using one connection module. When the image acquisition card is in 4-base mode, the image acquisition card can connect to four cameras using two connection modules, and so on. There is no limitation here.

[0090] Exemplarily, when the image acquisition card is in 4BASE mode, the image acquisition card includes two connection modules and a main control module, the two connection modules are respectively a first connection module and a second connection module, and each connection module includes a first board end connector and a second board end connector;

[0091] One end of the first board-end connector of the first connection module is connected to the main control module, and the other end is used to connect to the first camera-end connector of the first camera through a cable; the first board-end connector of the first connection module is used to transmit the control signal for the first camera output by the main control module to the first camera, and transmit the image data and receipt signal input by the first camera to the main control module; one end of the second board-end connector of the first connection module is connected to the main control module, and the other end is used to connect to the first camera-end connector of the second camera through a cable; the second board-end connector of the first connection module is used to transmit the control signal for the second camera output by the main control module to the second camera, and transmit the image data and receipt signal input by the second camera to the main control module.

[0092] One end of the first board-end connector of the second connection module is connected to the main control module, and the other end is used to connect to the first camera-end connector of the third camera via a cable; the first board-end connector of the second connection module is used to transmit the control signal for the third camera output by the main control module to the third camera, and transmit the image data and receipt signal input by the third camera to the main control module; one end of the second board-end connector of the second connection module is connected to the main control module, and the other end is used to connect to the first camera-end connector of the fourth camera via a cable; the second board-end connector of the second connection module is used to transmit the control signal for the fourth camera output by the main control module to the fourth camera, and transmit the image data and receipt signal input by the fourth camera to the main control module.

[0093] The image acquisition card provided in the embodiment of the present application realizes that two cameras can be connected to one image acquisition card at the same time in dual BASE mode through the connection module and the main control module, thereby reducing the occupation of connection module resources.

[0094] In one embodiment of the present application, Figure 2 As shown, a schematic structural diagram of a second image acquisition card is provided. The second board-side connector and the first camera-side connector of the second camera both include multiple pins. The main control module includes multiple pairs of pin differential pairs. One end of the pin of the second board-side connector is connected to the pin differential pair of the main control module, and the other end is used to connect to the first camera-side connector of the second camera.

[0095] The first pin of the second card-side connector is used to transmit the CC signal for the second camera output by the main control module to the second camera, wherein the pin differential pair connected to the first pin of the second card-side connector is configured in a differential output mode;

[0096] The second pin of the second board-end connector is used to transmit the Xlink signal input by the second camera to the main control module;

[0097] The third pin of the second card-side connector is used to transmit the SERTC+ / - signal for the second camera output by the main control module to the second camera, wherein the pin differential pair connected to the third pin of the second card-side connector is configured in a differential output mode;

[0098] The fourth pin of the second board-end connector is used to transmit the SerTFG+ / - signal input by the second camera to the main control module.

[0099] The CC (Camera Control) signal is a control signal transmitted from the image acquisition card to the camera based on the main control module. It is a differential signal that can be customized for various applications, such as providing a trigger signal for the camera. The Xlink signal is a signal transmitted by the underlying differential physical signal group used to transmit image data. Specifically, it includes four differential data signals (X1+ / -, X2+ / -, X3+ / -, and X0+ / -) and one clock signal (XCLK+ / -). The SerTC+ / - signal (Differential Pair With Serial Communications To The Camera) is used to transmit differential serial signals sent from the image acquisition card to the camera, such as control commands sent by the main control module to the second camera. Specifically, it is implemented through the Type-C serial port (a type of serial port) connected to the pins on the image acquisition card. The SerTFG+ / - signal is a TFG serial port signal (Differential Pair With Serial Communications To The Framegrabber, a differential serial signal for serial communication with the image acquisition card). It is used to transmit differential serial signals sent by the camera to the image acquisition card, such as the receipt instruction (i.e., receipt signal) fed back by the second camera in response to the control instruction. It is implemented through the TFG port (a connection port) connected to the pin on the second camera.

[0100] The image acquisition card provided in the embodiment of the present application complies with the CML protocol, that is, the first pin is used to transmit the CC signal in a 4-hop path, and the second pin is used to transmit four groups of Xlink signals.

[0101] The main control module includes multiple pairs of pin differential pairs. Except for the pin differential pairs connected to the first pin and the third pin of the second board end connector, which are configured in differential output mode, the other pin differential pairs are configured in differential input mode.

[0102] In one embodiment of the present application, the image acquisition card further includes a matching resistor. Specifically, the matching resistor may be a matching resistor controlled by a program in the main control module, or a matching resistor externally connected to the image acquisition card. Exemplarily, the value of the matching resistor may be 100Ω, which is used to connect to the channel where the signal input by the second camera is located, that is, to the end connected to the second pin and the fourth pin of the second board-end connector connected to the main control module.

[0103] The image acquisition card provided in the embodiment of the present application realizes the connection of different signal transmission paths between the image acquisition card and the second camera through multiple pins of the connection module and the main control module, thereby realizing the simultaneous connection of two cameras to one image acquisition card in dual-base mode, thereby reducing the occupation of connection module resources.

[0104] In one embodiment of the present application, the second card-side connector and the first camera-side connector of the second camera each include 26 pins, each having a line sequence of 1 to 26. It should be emphasized that line sequence numbers such as pin 1 to pin 26 and pin differential pair 1 to pin differential pair 26 are used only to distinguish between the pins or pin differential pairs and do not have an actual ordering function. The line sequence can be set according to actual application.

[0105] The pin differential pairs of the main control module include pin differential pair 17, pin differential pair 19, pin differential pair 20, pin differential pair 21, and pin differential pair 22, all of which are configured as differential output mode;

[0106] The first pins of the second card end connector include pin 18, pin 17, pin 16, pin 15, pin 5, pin 4, pin 3, and pin 2;

[0107] One ends of pins 18, 17, 16, and 15 of the second board-end connector are respectively connected to pins 9, 10, 11, and 12 of the first camera-end connector of the second camera, and the other ends are respectively connected to the 19N-output of the pin differential pair 19, the 20N-output of the pin differential pair 20, the 21N-output of the pin differential pair 21, and the 22N-output of the pin differential pair 22 of the main control module, for transmitting the CC1- signal, CC2+ signal, CC3- signal, and CC4+ signal output by the main control module for the second camera to the second camera;

[0108] One ends of pins 5, 4, 3, and 2 of the second board-end connector are respectively connected to pins 22, 23, 24, and 25 of the first camera-end connector of the second camera, and the other ends are respectively connected to the 19P-output of the pin differential pair 19, the 20P-output of the pin differential pair 20, the 21P-output of the pin differential pair 21, and the 22P-output of the pin differential pair 22 of the main control module, for transmitting the CC1+ signal, CC2- signal, CC3+ signal, and CC4- signal output by the main control module for the first camera to the second camera;

[0109] The second pins of the second card end connector include pin 25, pin 24, pin 23, pin 22, pin 21, pin 12, pin 11, pin 10, pin 9, and pin 8;

[0110] Pins 25, 24, 23, 22, and 21 of the second board-side connector are respectively connected to pins 2, 3, 4, 5, and 6 of the first camera-side connector of the second camera, for transmitting the X0-signal, X1-signal, X2-signal, XCK-signal, and X3-signal input by the second camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-side connector are respectively connected to pins 15, 16, 17, 18, and 19 of the first camera-side connector of the second camera, for transmitting the X0+signal, X1+signal, X2+signal, XCK+signal, and X3+signal input by the second camera to the main control module;

[0111] The third pin of the second card-side connector includes pin 20 and pin 7; one end of pin 20 and pin 7 of the second card-side connector is respectively connected to pin 7 and pin 20 of the first camera-side connector of the second camera, and the other end is respectively connected to the 17N-output and 17P-output of the pin differential pair 17 of the main control module, for transmitting the SerTC+ / - signal for the second camera output by the main control module to the second camera;

[0112] The fourth pin of the second board-end connector includes pin 19 and pin 6; pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the first camera-end connector of the second camera, for transmitting the SerTFG+ / - signal input by the second camera to the main control module.

[0113] Pins 25, 24, 23, 22, and 21 of the second board-end connector are connected to the main control module, and are respectively connected to the 12N-input of the pin differential pair 12, the 13N-input of the pin differential pair 13, the 14N-input of the pin differential pair 14, the 15N-input of the pin differential pair 15, and the 16N-input of the pin differential pair 16 of the main control module.

[0114] Pins 12, 11, 10, 9, and 8 of the second board-end connector are connected to the main control module, and are respectively connected to the 12P-input of the pin differential pair 12, the 13P-input of the pin differential pair 13, the 14P-input of the pin differential pair 14, the 15P-input of the pin differential pair 15, and the 16P-input of the pin differential pair 16 of the main control module.

[0115] Pins 19 and 6 of the second board-end connector are connected to the main control module, and are respectively connected to the 18N-input of the pin differential pair 18N and the 18P-input of the pin differential pair 18 of the main control module.

[0116] In one embodiment of the present application, pin 1, pin 13, pin 14, and pin 26 of the above-mentioned second board-end connector are respectively connected to pin 1, pin 13, pin 14, and pin 26 of the first camera-end connector of the second camera, for connecting the internal shield signal to the digital ground (Innershield-Na) of the second camera.

[0117] The image acquisition card provided in the embodiment of the present application provides higher feasibility for simultaneously connecting two cameras to one image acquisition card in dual-base mode by specifically defining multiple pins of the connection module, the main control module, and the second camera.

[0118] In one embodiment of the present application, the first card-side connector and the first camera-side connector of the first camera both include a plurality of pins, the main control module includes a plurality of pin differential pairs, one end of the pins of the first card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the first camera via a cable;

[0119] The first pin of the first board-end connector is used to transmit the CC signal for the first camera output by the main control module to the first camera;

[0120] The second pin of the first board-end connector is used to transmit the Xlink signal input by the first camera to the main control module;

[0121] The third pin of the first board-end connector is used to transmit the SerTC+ / - signal for the first camera output by the main control module to the first camera, and the fourth pin of the first board-end connector is used to transmit the SerTFG+ / - signal input by the first camera to the main control module.

[0122] The main control module includes multiple pairs of pin differential pairs, and the pin differential pairs connected to the pins of the first board end connector are all configured as differential input mode.

[0123] In one embodiment of the present application, the image acquisition card further includes a matching resistor. Specifically, the matching resistor may be a matching resistor controlled by a program in the main control module, or a matching resistor externally connected to the image acquisition card. Exemplarily, the value of the matching resistor may be 100Ω, which is used to connect to the pin of the first board-end connector, that is, to connect to the end of the first board-end connector that is connected to the pin of the main control module.

[0124] The image acquisition card provided in the embodiment of the present application realizes the connection of different signal transmission paths between the image acquisition card and the first camera through multiple pins of the connection module and the main control module, thereby realizing the simultaneous connection of two cameras to one image acquisition card in dual-base mode, thereby reducing the occupation of connection module resources.

[0125] In one example, the connection between the pins of each board-side connector and each camera connector, as well as the connection between the pins of each board-side connector and the pin differential pairs of the main control module, can be achieved through cable connections.

[0126] Exemplarily, when the image acquisition card is in 4BASE mode, the first board card end connector of the first connection module of the image acquisition card is used to connect to the first camera, and the second board card end connector of the first connection module is used to connect to the second camera; the first board card end connector of the second connection module of the image acquisition card is used to connect to the third camera, and the second board card end connector of the second connection module is used to connect to the fourth camera. The corresponding configuration of the pins and signals of the first connection module and the second connection module of the image acquisition card is consistent with the connection module of the image acquisition card in the dual BASE mode mentioned above.

[0127] In one embodiment of the present application, Figure 3 As shown, when the mode of the image acquisition card is non-BASE mode, one end of the first board-side connector is connected to the main control module, and the other end of the first board-side connector is used to connect to the first camera-side connector of the third camera through a cable;

[0128] The first board-end connector is configured to transmit a control signal for the third camera output by the main control module to the third camera, and to transmit image data and a receipt signal input by the third camera to the main control module;

[0129] One end of the second card-side connector is connected to the main control module, and the other end of the second card-side connector is used to connect to the second camera-side connector of the third camera through a cable;

[0130] The second board-end connector is used to transmit the control signal for the third camera output by the main control module to the third camera, and to transmit the image data input by the third camera to the main control module.

[0131] Non-BASE mode refers to a single-channel camera mode. Specifically, the solution of the embodiment of the present application can be applied to various single-channel camera modes other than the BASE mode, such as the Full mode, the Medium mode, the 80-bit mode, and other single-channel camera modes.

[0132] The third camera is a single camera connected to the image acquisition card in non-BASE mode. The first camera-end connector and the second camera-end connector of the third camera are both Camera Link connectors located at the camera end, which are connected to the first board-end connector and the second board-end connector through Camera Link0 (link 0, connector 0) and Camera Link1 (link 1, connector 1) of the third camera respectively.

[0133] The control signals output by the main control module include the control instructions, serial port signals, configuration signals, etc. output by the main control module for the third camera respectively. The image data of the third input is the image data collected by the third camera, which is input to the main control module for processing. The receipt signal is the feedback signal of the third camera for the control signal output by the main control module.

[0134] When the image acquisition card is in non-BASE mode, the other end of the image acquisition card, one end of which is connected to the first board-end connector of the main control module, is used to connect to the first camera-end connector of the third camera, transmit the control signal output by the main control module for the third camera to the third camera, and transmit the image data and receipt signal collected and input by the third camera to the main control module for processing; the other end of the image acquisition card, one end of which is connected to the second board-end connector of the main control module, is used to connect to the second camera-end connector of the third camera, transmit the control signal output by the main control module for the third camera to the third camera, and transmit the image data and receipt signal collected and input by the third camera to the main control module for processing.

[0135] The image acquisition card includes one or more connection modules, each of which includes two connectors: a first card-side connector and a second card-side connector. When the image acquisition card is in non-BASE mode, each connection module can be connected to a camera, and the connection relationship between each connection module and its corresponding camera is consistent. Therefore, when the image acquisition card includes one connection module, it can be connected to one camera (the third camera) in non-BASE mode. When the image acquisition card includes multiple connection modules, it can be connected to multiple cameras in non-BASE mode, and so on, without limitation here.

[0136] The image acquisition card provided in the embodiment of the present application realizes the connection between a single camera and the image acquisition card in non-BASE mode through the connection module and the main control module, thereby reducing the occupation of connection module resources.

[0137] In one embodiment of the present application, Figure 4 As shown, the second card-end connector and the second camera-end connector of the third camera both include multiple pins, the main control module includes multiple pairs of pin differential pairs, one end of the pin of the second card-end connector is connected to the pin differential pair of the main control module, and the other end is used to connect to the second camera-end connector of the third camera through a cable;

[0138] The first pin and the fourth pin of the second card-end connector are used to transmit the ZLINK signal input by the third camera to the main control module, and the second pin of the second card-end connector is used to transmit the YLINK signal input by the third camera to the main control module, wherein the pin differential pair connected to the first pin of the second card-end connector is configured as a differential input mode;

[0139] The third pin of the second board-end connector is used to transmit the SerTC+ / - signal for the third camera output by the main control module to the third camera, wherein the pin differential pair connected to the third pin of the second board-end connector is configured in a differential input mode.

[0140] In one embodiment of the present application,

[0141] The first card-side connector and the first camera-side connector of the third camera both include a plurality of pins, and the main control module includes a plurality of pin differential pairs. One end of the pins of the first card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the third camera via a cable;

[0142] The first pin of the first board-end connector is used to transmit the CC signal for the third camera output by the main control module to the third camera;

[0143] The second pin of the first board-end connector is used to transmit the Xlink signal input by the third camera to the main control module;

[0144] The third pin of the first board-end connector is used to transmit the SerTC+ / - signal for the third camera output by the main control module to the third camera, and the fourth pin of the first board-end connector is used to transmit the SerTFG+ / - signal input by the third camera to the main control module.

[0145] The image acquisition card provided in the embodiments of the present application complies with the CML protocol. Link 0 serves as the primary link for serial communication enumeration, including serial port signals, Xlink signals, and four CC signals. Link 1 is used for loan expansion, including Ylink and Zlink signals. Specifically, the first pin of the first card-side connector is used to transmit the CC signal in a four-hop path, the second pin of the first card-side connector is used to transmit four sets of Xlink signals, the first and fourth pins of the second card-side connector are used to transmit four sets of Zlink signals, and the second pin of the second card-side connector is used to transmit four sets of Ylink signals.

[0146] The main control module includes multiple pairs of pin differential pairs, all configured in differential input mode.

[0147] In one embodiment of the present application, the image acquisition card further includes a matching resistor. Specifically, it can be a matching resistor controlled by a program in the main control module, or it can be a matching resistor external to the image acquisition card. Exemplarily, the value of the matching resistor can be 100Ω, which is used to connect to the channel where the signal input by the third camera is located, that is, to the second pin of the first board-end connector, the first pin, the second pin, and the fourth pin of the second board-end connector connected to the end of the main control module.

[0148] The image acquisition card provided in the embodiment of the present application realizes the connection of different signal transmission paths between the image acquisition card and the third camera through multiple pins of the connection module and the main control module, thereby realizing the connection of a single camera to the image acquisition card in non-BASE mode, thereby reducing the occupation of connection module resources.

[0149] In one embodiment of the present application,

[0150] The second card-side connector and the second camera-side connector of the third camera each include 26 pins, each with a line sequence of 1 to 26. It should be emphasized that line sequence numbers such as pin 1 to pin 26 and pin differential pair 1 to pin differential pair 26 are used only to distinguish the pins or pin differential pairs and do not actually define the order. Line sequences can be customized based on actual needs.

[0151] The main control module includes a matching resistor, and each of the pin differential pairs includes a pin differential pair 17, a pin differential pair 19, a pin differential pair 20, a pin differential pair 21, and a pin differential pair 22, all of which are configured as a differential input mode;

[0152] The first pins of the second card end connector include pin 18, pin 17, pin 16, pin 15, pin 5, pin 4, pin 3, and pin 2;

[0153] One ends of pins 18, 17, 16, and 15 of the second board-end connector are respectively connected to pins 9, 10, 11, and 12 of the second camera-end connector of the third camera, and the other ends are respectively connected to the 19N-input of the pin differential pair 19, the 20N-input of the pin differential pair 20, the 21N-input of the pin differential pair 21, and the 22N-input of the pin differential pair 22 of the main control module, for transmitting the Z1-signal, Z2-signal, ZCK-signal, and Z3-signal input by the third camera to the main control module;

[0154] One ends of pins 5, 4, 3, and 2 of the second board-end connector are respectively connected to pins 22, 23, 24, and 25 of the second camera-end connector of the third camera, and the other ends are respectively connected to the 19P-input of the pin differential pair 19, the 20P-input of the pin differential pair 20, the 21P-input of the pin differential pair 21, and the 22P-input of the pin differential pair 22 of the main control module, for transmitting the Z1+ signal, Z2+ signal, ZCK+ signal, and Z3+ signal input by the third camera to the main control module;

[0155] The second pins of the second card end connector include pin 25, pin 24, pin 23, pin 22, pin 21, pin 12, pin 11, pin 10, pin 9, and pin 8;

[0156] Pins 25, 24, 23, 22, and 21 of the second board-end connector are respectively connected to pins 2, 3, 4, 5, and 6 of the second camera-end connector of the third camera, for transmitting the Y0-signal, Y1-signal, Y2-signal, YCK-signal, and Y3-signal input by the third camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-end connector are respectively connected to pins 15, 16, 17, 18, and 19 of the second camera-end connector of the third camera, for transmitting the Y0+signal, Y1+signal, Y2+signal, YCK+signal, and Y3+signal input by the third camera to the main control module;

[0157] The third pin of the second card-side connector includes pin 20 and pin 7; one end of pin 20 and pin 7 of the second card-side connector is respectively connected to pin 7 and pin 20 of the second camera-side connector of the third camera, and the other end is respectively connected to the 17N-input and 17P-input of the pin differential pair 17 of the main control module, for connecting to the matching resistor in the main control module;

[0158] The fourth pin of the second board-end connector includes pin 19 and pin 6; pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the second camera-end connector of the third camera, for transmitting the Z0+ and Z0- signals input by the third camera to the main control module.

[0159] Pins 25, 24, 23, 22, and 21 of the second board-end connector are connected to the main control module, and are respectively connected to the 12N-input of the pin differential pair 12, the 13N-input of the pin differential pair 13, the 14N-input of the pin differential pair 14, the 15N-input of the pin differential pair 15, and the 16N-input of the pin differential pair 16 of the main control module.

[0160] Pins 12, 11, 10, 9, and 8 of the second board-end connector are connected to the main control module, and are respectively connected to the 12P-input of the pin differential pair 12, the 13P-input of the pin differential pair 13, the 14P-input of the pin differential pair 14, the 15P-input of the pin differential pair 15, and the 16P-input of the pin differential pair 16 of the main control module.

[0161] Pins 19 and 6 of the second board-end connector are connected to the main control module, and are respectively connected to the 18N-input of the pin differential pair 18N and the 18P-input of the pin differential pair 18 of the main control module.

[0162] In one embodiment of the present application, pin 1, pin 13, pin 14, and pin 26 of the above-mentioned second board-end connector are respectively connected to pin 1, pin 13, pin 14, and pin 26 of the second camera-end connector of the third camera, for connecting the internal shield signal to the digital ground (Innershield-Na) of the third camera.

[0163] In one embodiment of the present application, the connection method between the pins of the first camera-end connector of the third camera in non-BASE mode and the pins of the first board-end connector of the image acquisition card is the same as the connection method between the pins of the first camera-end connector of the first camera and the pins of the first board-end connector of the image acquisition card in dual-BASE mode; the connection method between the pins of the first board-end connector in non-BASE mode and the differential pair of pins of the main control module is the same as the connection method between the pins of the first board-end connector in dual-BASE mode and the differential pair of pins of the main control module. The following takes the third camera in non-BASE mode as an example.

[0164] The first card-side connector and the first camera-side connector of the third camera both have 26 pins, each with a line sequence of 1-26. It's important to emphasize that line sequence numbers, such as pin 1-pin 26 and pin differential pair 1-pin differential pair 26, are used solely to distinguish individual pins or pin differential pairs and do not actually define their order. Line sequences can be set based on actual applications. The main control module includes multiple pairs of differential pins, all configured for differential input mode.

[0165] One ends of pins 18, 17, 16, and 15 of the first board-end connector are respectively connected to pins 9, 10, 11, and 12 of the first camera-end connector of the third camera, and the other ends are respectively connected to the 8N-input of the pin differential pair 8, the 9N-input of the pin differential pair 9, the 10N-input of the pin differential pair 10, and the 11N-input of the pin differential pair 11 of the main control module, for transmitting the CC1- signal, CC2+ signal, CC3- signal, and CC4+ signal output by the main control module for the third camera to the third camera.

[0166] One ends of pins 5, 4, 3, and 2 of the first board-end connector are respectively connected to pins 22, 23, 24, and 25 of the first camera-end connector of the third camera, and the other ends are respectively connected to the 8P-input of pin differential pair 8, the 9P-input of pin differential pair 9, the 10P-input of pin differential pair 10, and the 11P-input of pin differential pair 11 of the main control module, for transmitting the CC1+ signal, CC2- signal, CC3+ signal, and CC4- signal output by the main control module for the third camera to the third camera.

[0167] One ends of pins 25, 24, 23, 22, and 21 of the first board-end connector are respectively connected to pins 2, 3, 4, 5, and 6 of the first camera-end connector of the third camera, and the other ends are connected to the 1N-input of pin differential pair 1, the 2N-input of pin differential pair 2, the 3N-input of pin differential pair 3, the 4N-input of pin differential pair 4, and the 5N-input of pin differential pair 5 of the main control module, for transmitting the X0-signal, X1-signal, X2-signal, XCK-signal, and X3-signal input by the third camera to the main control module.

[0168] One ends of pins 12, 11, 10, 9, and 8 of the first board-end connector are respectively connected to pins 15, 16, 17, 18, and 19 of the first camera-end connector of the third camera, and the other ends are respectively connected to the 1P-input of pin differential pair 1, the 2P-input of pin differential pair 2, the 3P-input of pin differential pair 3, the 4P-input of pin differential pair 4, and the 5P-input of pin differential pair 5 of the main control module, for transmitting the X0+ signal, X1+ signal, X2+ signal, XCK+ signal, and X3+ signal input by the third camera to the main control module.

[0169] One end of pin 20 and pin 7 of the first board-side connector are respectively connected to pin 7 and pin 20 of the first camera-side connector of the third camera, and the other end is respectively connected to the 6N- output and 6P- output of the pin differential pair 6 of the main control module, for transmitting the SerTC+ / - signal for the third camera output by the main control module to the third camera;

[0170] One end of pin 19 and pin 6 of the first board-end connector are respectively connected to pin 8 and pin 21 of the first camera-end connector of the third camera, and the other ends are respectively connected to the 7N- input of the pin differential pair 7N and the 7P- input of the pin differential pair 7 of the main control module, for transmitting the SerTFG+ / - signal input by the third camera to the main control module.

[0171] Pin 1, pin 13, pin 14, and pin 26 of the first board end connector are respectively connected to pin 1, pin 13, pin 14, and pin 26 of the first camera end connector of the third camera, and are used to connect the internal shield signal to the digital ground (Innershield-Na) of the third camera.

[0172] like Figure 5The figure shows an example of the pin connection relationship for dual-channel BASE mode and single-channel Medium / Full / 80-bit mode, including the pins and the signal definitions they transmit. Pin 1 represents the connection on the link where the first board-side connector is located, pin 2 represents the connection on the link where the second board-side connector is located, the capture card connector represents the first board-side connector and the second board-side connector, and the capture card FPGA pin resource definition represents the pin differential pair configuration of the main control module.

[0173] The image acquisition card provided in the embodiment of the present application provides higher feasibility for connecting a single camera to the image acquisition card when switching to non-BASE mode by specifically defining multiple pins of the connection module, the main control module, and the third camera.

[0174] In one embodiment of the present application, the main control module is further configured to, when the image acquisition card is switched to dual-base mode, configure the pins of the image acquisition card according to any of the aforementioned pin-to-signal correspondences in the dual-base mode; and, when the image acquisition card is switched to non-base mode, configure the pins of the image acquisition card according to any of the aforementioned pin-to-signal correspondences in the non-base mode. For example, when the image acquisition card is switched to 4base mode, configure the pins of the image acquisition card according to any of the aforementioned pin-to-signal correspondences in the 4base mode, and so on.

[0175] It should be emphasized that the line sequence numbers such as pin 1 to pin 26, pin differential pair 1 to pin differential pair 26 are only used to distinguish each pin / pin differential pair, and have no actual sorting limit effect. The line sequence can be set according to actual application.

[0176] Specifically, when the image acquisition card mode is switched to dual BASE mode, the pin differential pairs of the main control module, including pin differential pair 17, pin differential pair 19, pin differential pair 20, pin differential pair 21, and pin differential pair 22, are all configured in differential output mode.

[0177] One ends of pins 18, 17, 16, and 15 of the second board-side connector are respectively connected to pins 9, 10, 11, and 12 of the first camera-side connector of the second camera, and the other ends are respectively connected to the 19N-output of the pin differential pair 19, the 20N-output of the pin differential pair 20, the 21N-output of the pin differential pair 21, and the 22N-output of the pin differential pair 22 of the main control module, for transmitting the CC1- signal, CC2+ signal, CC3- signal, and CC4+ signal output by the main control module for the second camera to the second camera;

[0178] One ends of pins 5, 4, 3, and 2 of the second board-side connector are respectively connected to pins 22, 23, 24, and 25 of the first camera-side connector of the second camera, and the other ends are respectively connected to the 19P- output of pin differential pair 19, the 20P- output of pin differential pair 20, the 21P- output of pin differential pair 21, and the 22P- output of pin differential pair 22 of the main control module, for transmitting the CC1+ signal, CC2- signal, CC3+ signal, and CC4- signal output by the main control module for the first camera to the second camera;

[0179] Pins 25, 24, 23, 22, and 21 of the second board-end connector are respectively connected to pins 2, 3, 4, 5, and 6 of the first camera-end connector of the second camera, for transmitting the X0-signal, X1-signal, X2-signal, XCK-signal, and X3-signal input by the second camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-end connector are respectively connected to pins 15, 16, 17, 18, and 19 of the first camera-end connector of the second camera, for transmitting the X0+signal, X1+signal, X2+signal, XCK+signal, and X3+signal input by the second camera to the main control module;

[0180] One end of pin 20 and pin 7 of the second board-side connector are respectively connected to pin 7 and pin 20 of the first camera-side connector of the second camera, and the other end is respectively connected to the 17N- output and 17P- output of the pin differential pair 17 of the main control module, for transmitting the SerTC+ / - signal for the second camera output by the main control module to the second camera;

[0181] Pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the first camera-end connector of the second camera, for transmitting the SerTFG+ / - signal input by the second camera to the main control module.

[0182] Pins 25, 24, 23, 22, and 21 of the second board-end connector are connected to the main control module, and are respectively connected to the 12N-input of the pin differential pair 12, the 13N-input of the pin differential pair 13, the 14N-input of the pin differential pair 14, the 15N-input of the pin differential pair 15, and the 16N-input of the pin differential pair 16 of the main control module.

[0183] Pins 12, 11, 10, 9, and 8 of the second board-end connector are connected to the main control module, and are respectively connected to the 12P-input of the pin differential pair 12, the 13P-input of the pin differential pair 13, the 14P-input of the pin differential pair 14, the 15P-input of the pin differential pair 15, and the 16P-input of the pin differential pair 16 of the main control module.

[0184] Pins 19 and 6 of the second board-end connector are connected to the main control module, and are respectively connected to the 18N-input of the pin differential pair 18N and the 18P-input of the pin differential pair 18 of the main control module.

[0185] Pin 1, pin 13, pin 14, and pin 26 of the second board end connector are respectively connected to pin 1, pin 13, pin 14, and pin 26 of the first camera end connector of the second camera, and are used to connect the internal shield signal to the digital ground (Innershield-Na) of the second camera.

[0186] The first board-end connector and the first camera-end connector of the first camera both include multiple pins, one end of the pins of the first board-end connector is connected to the pin differential pair of the main control module, and the other end is used to connect to the first camera-end connector of the first camera; the first pin of the first board-end connector is used to transmit the CC signal output by the main control module for the first camera to the first camera; the second pin of the first board-end connector is used to transmit the Xlink signal input by the first camera to the main control module; the third pin of the first board-end connector is used to transmit the SerTC+ / - signal output by the main control module for the first camera to the first camera, and the fourth pin of the first board-end connector is used to transmit the SerTFG+ / - signal input by the first camera to the main control module.

[0187] The main control module includes multiple pairs of differential pins, each of which is configured for differential input mode. The image acquisition card also includes a matching resistor, which can be a program-controlled matching resistor in the main control module or a matching resistor external to the image acquisition card. For example, the matching resistor can have a value of 100Ω and is used to connect to the pins of the first board-side connector, i.e., the end of the first board-side connector that is connected to the main control module.

[0188] When the mode of the image acquisition card is switched to non-BASE mode, the main control module includes a matching resistor, and each pin differential pair includes pin differential pair 17, pin differential pair 19, pin differential pair 20, pin differential pair 21, and pin differential pair 22, all of which are configured in differential input mode; one end of pin 18, pin 17, pin 16, and pin 15 of the second board-end connector is respectively connected to pin 9, pin 10, pin 11, and pin 12 of the second camera-end connector of the third camera, and the other end is respectively connected to the 19N-input of the pin differential pair 19, the 20N-input of the pin differential pair 20, the 21N-input of the pin differential pair 21, and the 22N-input of the pin differential pair 22 of the main control module, for transmitting the Z1-signal, Z2-signal, ZCK-signal, and Z3-signal input by the third camera to the main control module;

[0189] One ends of pins 5, 4, 3, and 2 of the second board-side connector are respectively connected to pins 22, 23, 24, and 25 of the second camera-side connector of the third camera, and the other ends are respectively connected to the 19P-input of pin differential pair 19, the 20P-input of pin differential pair 20, the 21P-input of pin differential pair 21, and the 22P-input of pin differential pair 22 of the main control module, for transmitting the Z1+ signal, Z2+ signal, ZCK+ signal, and Z3+ signal input by the third camera to the main control module;

[0190] Pins 25, 24, 23, 22, and 21 of the second board-end connector are respectively connected to pins 2, 3, 4, 5, and 6 of the second camera-end connector of the third camera, for transmitting the Y0-signal, Y1-signal, Y2-signal, YCK-signal, and Y3-signal input by the third camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-end connector are respectively connected to pins 15, 16, 17, 18, and 19 of the second camera-end connector of the third camera, for transmitting the Y0+signal, Y1+signal, Y2+signal, YCK+signal, and Y3+signal input by the third camera to the main control module;

[0191] One end of pin 20 and pin 7 of the second board-end connector are respectively connected to pin 7 and pin 20 of the second camera-end connector of the third camera, and the other ends are respectively connected to the 17N-input and 17P-input of the pin differential pair 17 of the main control module, for connecting the matching resistor in the main control module; pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the second camera-end connector of the third camera, for transmitting the Z0+ and Z0- signals input by the third camera to the main control module.

[0192] Pins 25, 24, 23, 22, and 21 of the second board-end connector are connected to the main control module, and are respectively connected to the 12N-input of the pin differential pair 12, the 13N-input of the pin differential pair 13, the 14N-input of the pin differential pair 14, the 15N-input of the pin differential pair 15, and the 16N-input of the pin differential pair 16 of the main control module.

[0193] Pins 12, 11, 10, 9, and 8 of the second board-end connector are connected to the main control module, and are respectively connected to the 12P-input of the pin differential pair 12, the 13P-input of the pin differential pair 13, the 14P-input of the pin differential pair 14, the 15P-input of the pin differential pair 15, and the 16P-input of the pin differential pair 16 of the main control module.

[0194] Pins 19 and 6 of the second board-side connector are connected to the main control module and, respectively, to the 18N-input of the main control module's pin differential pair 18N and the 18P-input of the pin differential pair 18. Pins 1, 13, 14, and 26 of the second board-side connector are connected to pins 1, 13, 14, and 26 of the second camera-side connector of the third camera, respectively, to connect the internal shield signal to the third camera's digital ground (Innershield-Na).

[0195] The main control module includes multiple pairs of differential pins, all configured in differential input mode. Pins 18, 17, 16, and 15 of the first board-side connector are connected to pins 9, 10, 11, and 12 of the first camera-side connector of the third camera, respectively. Their other ends are connected to the 8N-input of pin differential pair 8, the 9N-input of pin differential pair 9, the 10N-input of pin differential pair 10, and the 11N-input of pin differential pair 11 of the main control module, respectively. These signals are used to transmit the CC1-, CC2+, CC3-, and CC4+ signals output by the main control module for the third camera to the third camera.

[0196] One ends of pins 5, 4, 3, and 2 of the first board-end connector are respectively connected to pins 22, 23, 24, and 25 of the first camera-end connector of the third camera, and the other ends are respectively connected to the 8P-input of pin differential pair 8, the 9P-input of pin differential pair 9, the 10P-input of pin differential pair 10, and the 11P-input of pin differential pair 11 of the main control module, for transmitting the CC1+ signal, CC2- signal, CC3+ signal, and CC4- signal output by the main control module for the third camera to the third camera.

[0197] One ends of pins 25, 24, 23, 22, and 21 of the first board-end connector are respectively connected to pins 2, 3, 4, 5, and 6 of the first camera-end connector of the third camera, and the other ends are connected to the 1N-input of pin differential pair 1, the 2N-input of pin differential pair 2, the 3N-input of pin differential pair 3, the 4N-input of pin differential pair 4, and the 5N-input of pin differential pair 5 of the main control module, for transmitting the X0-signal, X1-signal, X2-signal, XCK-signal, and X3-signal input by the third camera to the main control module.

[0198] One ends of pins 12, 11, 10, 9, and 8 of the first board-end connector are respectively connected to pins 15, 16, 17, 18, and 19 of the first camera-end connector of the third camera, and the other ends are respectively connected to the 1P-input of pin differential pair 1, the 2P-input of pin differential pair 2, the 3P-input of pin differential pair 3, the 4P-input of pin differential pair 4, and the 5P-input of pin differential pair 5 of the main control module, for transmitting the X0+ signal, X1+ signal, X2+ signal, XCK+ signal, and X3+ signal input by the third camera to the main control module.

[0199] One end of pin 20 and pin 7 of the first board-side connector are respectively connected to pin 7 and pin 20 of the first camera-side connector of the third camera, and the other end is respectively connected to the 6N- output and 6P- output of the pin differential pair 6 of the main control module, for transmitting the SerTC+ / - signal for the third camera output by the main control module to the third camera;

[0200] One end of pin 19 and pin 6 of the first board-end connector are respectively connected to pin 8 and pin 21 of the first camera-end connector of the third camera, and the other ends are respectively connected to the 7N- input of the pin differential pair 7N and the 7P- input of the pin differential pair 7 of the main control module, for transmitting the SerTFG+ / - signal input by the third camera to the main control module.

[0201] Pin 1, pin 13, pin 14, and pin 26 of the first board end connector are respectively connected to pin 1, pin 13, pin 14, and pin 26 of the first camera end connector of the third camera, and are used to connect the internal shield signal to the digital ground (Innershield-Na) of the third camera.

[0202] like Figure 6 As shown, the embodiment of the present application also provides an example diagram of the configuration change of an image acquisition card switching from Full mode to Dual BASE mode.

[0203] In Full mode, also known as Fulllink mode, the TC serial port used to transmit SerTC+ / - signals remains unchanged. When Zlink doesn't use TC, a 100Ω termination is used by default. When Zlink reception is switched to CC output, all termination resistors must be removed. If program-controlled, these resistors must be removed; if external, these resistors must be removed directly. The input port is then switched to output. Simultaneously, the logic on the differential lines between pins 4 / 17 and 2 / 15 of the main control module is inverted.

[0204] The image acquisition card provided in the embodiment of the present application configures a main control module and adjusts the connection between the connection module and the camera, thereby enabling the same image acquisition card to directly switch between dual-base mode and non-base mode corresponding to different numbers of cameras, thereby improving the efficiency of camera mode switching and reducing the resource usage of the connection module.

[0205] like Figure 7-1 As shown, the embodiment of the present application also provides a structural diagram of a first data signal transmission system, including: a first camera, a second camera and an image acquisition card;

[0206] The first camera and the second camera each include a first camera-end connector and a second camera-end connector, and the image acquisition card is the image acquisition card in the dual-BASE mode in any of the above items;

[0207] The first camera-end connector of the first camera is connected to the first card-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the first camera, and inputs the image data and receipt signal acquired by the first camera to the image acquisition card;

[0208] The first camera-end connector of the second camera is connected to the second board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the second camera, and inputs the image data and receipt signal acquired by the second camera to the image acquisition card;

[0209] The second camera end connectors of the first camera and the second camera are suspended in the air.

[0210] like Figure 7-2 As shown, the embodiment of the present application also provides an example diagram of data signal transmission of the first data signal transmission system.

[0211] The embodiment of the present application further provides a second data signal transmission system, comprising: a third camera and an image acquisition card;

[0212] The third camera includes a first camera-end connector and a second camera-end connector, and the image acquisition card is an image acquisition card in a non-BASE mode in any of the above items;

[0213] The first camera-end connector of the third camera is connected to the first board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the third camera, and inputs the image data and receipt signal acquired by the third camera to the image acquisition card;

[0214] The second camera-end connector of the third camera is connected to the second board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the third camera, and inputs the image data acquired by the third camera to the image acquisition card.

[0215] like Figure 8 As shown, the embodiment of the present application also provides an example diagram of data signal transmission of a second data signal transmission system.

[0216] like Figure 9 As shown, the embodiment of the present application also provides an example diagram of a practical application connection of a data signal transmission system, wherein PCIE X4 is a high-speed data transmission interface of an image acquisition card, and DDR3 SDRAM is a graphics card memory of an image acquisition card.

[0217] The data signal transmission system provided in the embodiment of the present application realizes switching between dual-BASE mode and non-BASE mode through the configuration of the main control module of the image acquisition card and the connection between the connection module and the camera, thereby reducing the resource occupation of the connection module.

[0218] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrations. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a solid-state drive (SSD).

[0219] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0220] Each embodiment in this specification is described in a related manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiment is generally similar to the method embodiment, so the description is relatively simple. For related parts, refer to the description of the method embodiment.

[0221] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application are included in the scope of protection of the present application.

Claims

1. An image acquisition card, characterized in that: include: A main control module and at least one connection module, wherein the connection module includes a first board-side connector and a second board-side connector; When the image acquisition card is in dual-base mode, one end of the first board-side connector is connected to the main control module, and the other end of the first board-side connector is used to connect to the first camera-side connector of the first camera through a cable; The first board-end connector is used to transmit the control signal for the first camera output by the main control module to the first camera, and to transmit the image data and receipt signal input by the first camera to the main control module; One end of the second card-side connector is connected to the main control module, and the other end of the second card-side connector is used to connect to the first camera-side connector of the second camera through a cable; The second board-end connector is used to transmit the control signal for the second camera output by the main control module to the second camera, and to transmit the image data and receipt signal input by the second camera to the main control module.

2. The image acquisition card according to claim 1, wherein: The second card-side connector and the first camera-side connector of the second camera both include a plurality of pins, the main control module includes a plurality of pin differential pairs, one end of the pins of the second card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the second camera via a cable; The first pin of the second card-side connector is used to transmit the CC signal for the second camera output by the main control module to the second camera, wherein the pin differential pair connected to the first pin of the second card-side connector is configured in a differential output mode; The second pin of the second board-end connector is used to transmit the Xlink signal input by the second camera to the main control module; The third pin of the second card-side connector is used to transmit the SerTC+ / - signal for the second camera output by the main control module to the second camera, wherein the pin differential pair connected to the third pin of the second card-side connector is configured in a differential output mode; The fourth pin of the second board-end connector is used to transmit the SerTFG+ / - signal input by the second camera to the main control module.

3. The image acquisition card according to claim 2, wherein: The second card-end connector and the first camera-end connector of the second camera each include 26 pins, each of the pins having a line sequence of 1-26; each of the pin differential pairs of the main control module includes pin differential pair 17, pin differential pair 19, pin differential pair 20, pin differential pair 21, and pin differential pair 22, all of which are configured in differential output mode; The first pins of the second card end connector include pin 18, pin 17, pin 16, pin 15, pin 5, pin 4, pin 3, and pin 2; One ends of pins 18, 17, 16, and 15 of the second board-end connector are respectively connected to pins 9, 10, 11, and 12 of the first camera-end connector of the second camera, and the other ends are respectively connected to the 19N-output of the pin differential pair 19, the 20N-output of the pin differential pair 20, the 21N-output of the pin differential pair 21, and the 22N-output of the pin differential pair 22 of the main control module, for transmitting the CC1- signal, CC2+ signal, CC3- signal, and CC4+ signal output by the main control module for the second camera to the second camera; One ends of pins 5, 4, 3, and 2 of the second board-end connector are respectively connected to pins 22, 23, 24, and 25 of the first camera-end connector of the second camera, and the other ends are respectively connected to the 19P-output of the pin differential pair 19, the 20P-output of the pin differential pair 20, the 21P-output of the pin differential pair 21, and the 22P-output of the pin differential pair 22 of the main control module, for transmitting the CC1+ signal, CC2- signal, CC3+ signal, and CC4- signal output by the main control module for the first camera to the second camera; The second pins of the second card end connector include pin 25, pin 24, pin 23, pin 22, pin 21, pin 12, pin 11, pin 10, pin 9, and pin 8; Pins 25, 24, 23, 22, and 21 of the second board-side connector are respectively connected to pins 2, 3, 4, 5, and 6 of the first camera-side connector of the second camera, for transmitting the X0-signal, X1-signal, X2-signal, XCK-signal, and X3-signal input by the second camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-side connector are respectively connected to pins 15, 16, 17, 18, and 19 of the first camera-side connector of the second camera, for transmitting the X0+signal, X1+signal, X2+signal, XCK+signal, and X3+signal input by the second camera to the main control module; The third pin of the second card-side connector includes pin 20 and pin 7; one end of pin 20 and pin 7 of the second card-side connector is respectively connected to pin 7 and pin 20 of the first camera-side connector of the second camera, and the other end is respectively connected to the 17N-output and 17P-output of the pin differential pair 17 of the main control module, for transmitting the SerTC+ / - signal for the second camera output by the main control module to the second camera; The fourth pin of the second board-end connector includes pin 19 and pin 6; pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the first camera-end connector of the second camera, for transmitting the SerTFG+ / - signal input by the second camera to the main control module.

4. The image acquisition card according to claim 1, wherein: The first card-side connector and the first camera-side connector of the first camera both include a plurality of pins, and the main control module includes a plurality of pin differential pairs. One end of the pins of the first card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the first camera via a cable; The first pin of the first board-end connector is used to transmit the CC signal for the first camera output by the main control module to the first camera; The second pin of the first board-end connector is used to transmit the Xlink signal input by the first camera to the main control module; The third pin of the first board-end connector is used to transmit the SerTC+ / - signal for the first camera output by the main control module to the first camera, and the fourth pin of the first board-end connector is used to transmit the SerTFG+ / - signal input by the first camera to the main control module.

5. The image acquisition card according to claim 1, wherein: When the image acquisition card is in non-BASE / dual-BASE mode, one end of the first board-side connector is connected to the main control module, and the other end of the first board-side connector is used to connect to the first camera-side connector of the third camera through a cable; The first board-end connector is configured to transmit a control signal for the third camera output by the main control module to the third camera, and to transmit image data and a receipt signal input by the third camera to the main control module; One end of the second card-side connector is connected to the main control module, and the other end of the second card-side connector is used to connect to the second camera-side connector of the third camera through a cable; The second board-end connector is used to transmit the image data input by the third camera to the main control module.

6. The image acquisition card according to claim 5, characterized in that: The second card-end connector and the second camera-end connector of the third camera both include a plurality of pins, the main control module includes a plurality of pin differential pairs, one end of the pins of the second card-end connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the second camera-end connector of the third camera via a cable; The first pin and the fourth pin of the second board-end connector are used to transmit the Zlink signal input by the third camera to the main control module, and the second pin of the second board-end connector is used to transmit the Ylink signal input by the third camera to the main control module, wherein the pin differential pair connected to the first pin of the second board-end connector is configured in differential input mode.

7. The image acquisition card according to claim 6, characterized in that: The second card-end connector and the second camera-end connector of the third camera each include 26 pins, each of which has a line sequence of 1-26; the main control module includes a matching resistor, and each of the pin differential pairs includes pin differential pair 17, pin differential pair 19, pin differential pair 20, pin differential pair 21, and pin differential pair 22, all of which are configured in differential input mode; The first pins of the second card end connector include pin 18, pin 17, pin 16, pin 15, pin 5, pin 4, pin 3, and pin 2; One ends of pins 18, 17, 16, and 15 of the second board-end connector are respectively connected to pins 9, 10, 11, and 12 of the second camera-end connector of the third camera, and the other ends are respectively connected to the 19N-input of the pin differential pair 19, the 20N-input of the pin differential pair 20, the 21N-input of the pin differential pair 21, and the 22N-input of the pin differential pair 22 of the main control module, for transmitting the Z1-signal, Z2-signal, ZCK-signal, and Z3-signal input by the third camera to the main control module; One ends of pins 5, 4, 3, and 2 of the second board-end connector are respectively connected to pins 22, 23, 24, and 25 of the second camera-end connector of the third camera, and the other ends are respectively connected to the 19P-input of the pin differential pair 19, the 20P-input of the pin differential pair 20, the 21P-input of the pin differential pair 21, and the 22P-input of the pin differential pair 22 of the main control module, for transmitting the Z1+ signal, Z2+ signal, ZCK+ signal, and Z3+ signal input by the third camera to the main control module; The second pins of the second card end connector include pin 25, pin 24, pin 23, pin 22, pin 21, pin 12, pin 11, pin 10, pin 9, and pin 8; Pins 25, 24, 23, 22, and 21 of the second board-end connector are respectively connected to pins 2, 3, 4, 5, and 6 of the second camera-end connector of the third camera, for transmitting the Y0-signal, Y1-signal, Y2-signal, YCK-signal, and Y3-signal input by the third camera to the main control module; pins 12, 11, 10, 9, and 8 of the second board-end connector are respectively connected to pins 15, 16, 17, 18, and 19 of the second camera-end connector of the third camera, for transmitting the Y0+signal, Y1+signal, Y2+signal, YCK+signal, and Y3+signal input by the third camera to the main control module; The fourth pin of the second board-end connector includes pin 19 and pin 6; pin 19 and pin 6 of the second board-end connector are respectively connected to pin 8 and pin 21 of the second camera-end connector of the third camera, for transmitting the Z0+ and Z0- signals input by the third camera to the main control module.

8. The image acquisition card according to claim 5, characterized in that: The first card-side connector and the first camera-side connector of the third camera both include a plurality of pins, and the main control module includes a plurality of pin differential pairs. One end of the pins of the first card-side connector is connected to the pin differential pairs of the main control module, and the other end is used to connect to the first camera-side connector of the third camera via a cable; The first pin of the first board-end connector is used to transmit the CC signal for the third camera output by the main control module to the third camera; The second pin of the first board-end connector is used to transmit the Xlink signal input by the third camera to the main control module.

9. The image acquisition card according to claim 1, wherein: The main control module is further configured to, when the mode of the image acquisition card is switched to the dual-BASE mode, configure the pins of the image acquisition card according to the correspondence between the pins and the signals in any one of claims 2 to 4; and, when the mode of the image acquisition card is switched to the non-BASE mode, configure the pins of the image acquisition card according to the correspondence between the pins and the signals in any one of claims 6 to 8.

10. A data signal transmission system, characterized in that: include: a first camera, a second camera, and an image acquisition card; The first camera and the second camera each include a first camera-end connector and a second camera-end connector, and the image acquisition card is the image acquisition card according to any one of claims 1 to 4; The first camera-end connector of the first camera is connected to the first card-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the first camera, and inputs the image data and receipt signal acquired by the first camera to the image acquisition card; The first camera-end connector of the second camera is connected to the second board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the second camera, and inputs the image data and receipt signal acquired by the second camera to the image acquisition card; The second camera end connectors of the first camera and the second camera are suspended in the air.

11. A data signal transmission system, characterized in that: include: a third camera and an image acquisition card; The third camera includes a first camera-end connector and a second camera-end connector, and the image acquisition card is the image acquisition card according to any one of claims 5 to 8; The first camera-end connector of the third camera is connected to the first board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the third camera, and inputs the image data and receipt signal acquired by the third camera to the image acquisition card; The second camera-end connector of the third camera is connected to the second board-end connector of the image acquisition card, receives the control signal output by the image acquisition card for the third camera, and inputs the image data acquired by the third camera to the image acquisition card.

Images