Camera triggering system and method

Abstract

The present invention provides a camera triggering system and method, which includes: an encoder connected to a motor, for generating a pulse signal according to the state of the motor; a trigger module for judging the rotation direction of the motor according to the pulse signal, and generating a trigger signal according to a preset trigger frequency when the rotation direction meets a preset rotation direction; a camera for collecting image information of a target object according to the trigger signal; the trigger module of the present application is used to generate a trigger signal according to a preset trigger frequency when the rotation direction of the motor meets a preset rotation direction, so that the present application can ensure that the camera is triggered when the rotation direction of the motor is in the preset rotation direction, avoiding false detection of non-preset rotation directions. At the same time, the present application configures the pulse width and trigger frequency through the host, and can configure the corresponding trigger conditions in a targeted manner according to the detection requirements, thereby improving the accuracy and reliability of the detection and achieving more precise control.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation, and in particular to a camera triggering system and method. Background Art

[0002] In the field of industrial automation, the camera trigger system is a key component of machine vision technology. It is widely used in product quality inspection, dimension measurement, position positioning and defect detection. Line scan camera is an important component of the camera trigger system. It is an efficient and accurate industrial vision device that can play an important role in different fields. With the continuous innovation and progress of technology, the application prospects of line scan cameras are broader, so the trigger system of line scan cameras is also very important. For example, in the automated processing of laser equipment on OLED products, OLED screens are usually high-value and precision components. The accuracy of the cutting position directly affects the quality and yield of the final product. The camera trigger system can accurately determine the starting and ending points of cutting by capturing the marking points or edges on the OLED panel. This ensures that the cutting tool or laser head starts and ends cutting at the correct position to avoid waste due to position deviation.

[0003] Conventional camera trigger systems mainly include components such as cameras and encoders. The encoder is used to provide timing and position information to ensure that the camera triggering is synchronized with the movement of the mechanism. The line scan camera is responsible for capturing images. Although the traditional system can realize automatic triggering of the camera, it cannot perform more precise control over the camera triggering system. It is not convenient to flexibly adjust the camera triggering according to different application scenarios and requirements to adapt to various detection tasks. Summary of the invention

[0004] The purpose of the present invention is to provide a camera triggering system and method, which can solve the problem that "although the traditional system can realize the automatic triggering of the camera, it cannot perform more precise control on the camera triggering system, and it is not convenient to flexibly adjust the triggering status of the camera according to different application scenarios and requirements to adapt to various detection tasks."

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention provides a camera trigger system, comprising: an encoder connected to a motor and used to generate a pulse signal according to the rotation state of the motor;

[0007] A trigger module, electrically connected to the encoder, for determining the rotation direction of the motor according to the pulse signal, and generating the trigger signal according to a preset trigger frequency when the rotation direction satisfies a preset rotation direction;

[0008] A camera, electrically connected to the trigger module, for collecting image information of the target object according to the trigger signal;

[0009] The host is electrically connected to the trigger module and is used to configure the trigger frequency.

[0010] In one embodiment of the present invention, the camera comprises:

[0011] A communication unit, configured to receive the trigger signal;

[0012] The line scan camera is used to collect image information according to the trigger signal.

[0013] In one embodiment of the present invention, the number of the encoders is multiple, and the number of the line scan cameras is multiple;

[0014] The trigger module includes a trigger unit, a plurality of data input channels and a plurality of data output channels, the number of the data input channels matches the number of the encoders, and the number of the data output channels matches the number of the line scan cameras;

[0015] Each of the encoders is used to obtain a corresponding pulse signal according to the rotation state of the corresponding motor, each of the pulse signals is transmitted to the trigger unit through the corresponding data input channel to generate a corresponding trigger signal, each of the trigger signals is transmitted to the communication unit through the corresponding data output channel, and each of the line scan cameras is used to collect image information of the corresponding target object according to the corresponding trigger signal.

[0016] In one embodiment of the present invention, the number of the encoder is one, and the number of the line scan cameras is multiple;

[0017] The trigger module includes a trigger unit, a data input channel and a plurality of data output channels, and the number of the data output channels matches the number of the line scan cameras;

[0018] The encoder is used to obtain a pulse signal according to the rotation state of the motor, and the pulse signal is transmitted to the trigger unit through the data input channel to generate a trigger signal, and the trigger signal is transmitted to the communication unit through the multiple output channels. The multiple line scan cameras are used to collect image information of the multiple targets according to the trigger signal.

[0019] In one embodiment of the present invention, the pulse signal includes an A-phase pulse signal and a B-phase pulse signal having a phase difference of 90°;

[0020] The trigger module is used to obtain the rotation direction of the motor based on the A-phase pulse signal and the B-phase pulse signal;

[0021] Among them, the rotation direction includes a forward direction and a reverse direction. The case where the A-phase pulse signal leads the B-phase pulse signal is the forward direction, and the case where the A-phase pulse signal lags behind the B-phase pulse signal is the reverse direction.

[0022] In one embodiment of the present invention, the host is further used to configure the pulse width;

[0023] The trigger module is used to generate the trigger signal according to a preset trigger frequency and a preset pulse width when the rotation direction meets a preset rotation direction.

[0024] In one embodiment of the present invention, the host is connected to the camera, and the host is used to send a control signal to control the camera to periodically switch between the on state and the off state.

[0025] In an embodiment of the present invention, the communication unit is further used to receive the image information and transmit the image information to the host, and the host is used to obtain an image acquisition result according to the image information.

[0026] In one embodiment of the present invention, the communication unit is communicatively connected to a host, and the host is used to display the image acquisition result.

[0027] The present application also provides a camera triggering method, comprising the following steps:

[0028] Configure the trigger frequency;

[0029] Generate a pulse signal according to the rotation state of the motor;

[0030] Determining the rotation direction of the motor according to the pulse signal, and generating a trigger signal according to a preset trigger frequency when the rotation direction meets a preset rotation direction;

[0031] The camera collects image information of the target object according to the trigger signal.

[0032] As described above, the present invention provides a camera triggering system and method. The trigger module of the present application is used to generate a trigger signal according to a preset trigger frequency when the rotation direction of the motor meets the preset rotation direction. Therefore, the present application can ensure that the camera is triggered when the rotation direction of the motor is in the preset rotation direction, avoiding false detection of non-preset rotation directions. At the same time, the present application configures the pulse width and trigger frequency through the host, and can configure the corresponding trigger conditions according to the detection requirements in a targeted manner, thereby improving the accuracy and reliability of the detection and achieving more precise control; in addition, the system can also be configured with multi-channel input, multi-channel output and single-channel input, multi-channel output according to actual needs, which is suitable for richer detection needs.

[0033] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0035] Figure 1 FIG. 4 is a connection diagram of a camera triggering system in one embodiment of the present invention.

[0036] Figure 2 Schematic diagram of the connection between the trigger module and the encoder of the camera trigger system in one embodiment of the present invention.

[0037] Figure 3 FIG. 4 is a flow chart of a camera triggering method according to an embodiment of the present invention.

[0038] In the figure:

[0039] 100- encoder, 200- trigger module, 300- camera, 310- communication unit, 320- line scan camera, 400- host. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See attached Figure 1-2 A camera triggering system according to the first embodiment of the present application is exemplarily described. The camera triggering system includes an encoder 100, a triggering module 200, a camera 300 and a host 400.

[0042] The encoder 100 is connected to the motor and is used to generate a pulse signal according to the rotation state of the motor; the trigger module 200 is electrically connected to the encoder 100 and is used to determine the rotation direction of the motor according to the pulse signal, and when the rotation direction meets the preset rotation direction, generates a trigger signal according to a preset trigger frequency; the camera 300 is electrically connected to the trigger module 200 and is used to collect image information of the target object according to the trigger signal; the host 400 is electrically connected to the trigger module 200 and is used to configure the trigger frequency.

[0043] In an embodiment of the present application, the encoder 100 is connected to the motor to generate a pulse signal according to the rotation state of the motor. For example, the motor can be a motor such as a servo motor or a stepper motor. Specifically, the encoder 100 is installed on the rotating shaft of the motor. When the rotating shaft of the motor is in motion, the encoder 100 can send a pulse signal. Alternatively, the encoder 100 can be installed on a rotating component of the conveyor belt system to monitor the state of the conveyor belt. The present application does not limit the specific installation position of the encoder 100, and those skilled in the art can arrange the installation position of the encoder 100 according to the actual application scenario of the camera trigger system.

[0044] In the embodiment of the present application, the trigger module 200 is electrically connected to the encoder 100, and is used to determine the rotation direction of the motor according to the pulse signal, and generate a trigger signal according to a preset trigger frequency when the rotation direction meets the preset rotation direction.

[0045] For example, the encoder 100 is installed on a rotating component of a conveyor belt system, and the rotating component is used to control the movement of the conveyor belt. When the rotation direction of the rotating component meets the preset rotation direction (for example, clockwise or counterclockwise), a trigger signal can be generated according to a preset trigger frequency, that is, it can ensure that the camera 300 is triggered to collect images only when the conveyor belt moves in the correct direction.

[0046] For example, the encoder 100 may use an incremental encoder 100, and the rotation direction of the motor may be determined by the pulse signal of the encoder 100. The encoder 100 may output two orthogonal pulse signals with a phase difference of 90 degrees, usually marked as phase A and phase B, and the rotation direction of the motor may be determined by analyzing the phase relationship between the two signals.

[0047] By way of example, the pulse signal includes an A-phase pulse signal and a B-phase pulse signal with a phase difference of 90°; the trigger module 200 is used to obtain the rotation direction of the motor based on the A-phase pulse signal and the B-phase pulse signal; wherein the rotation direction includes a forward direction and a reverse direction, the case where the A-phase pulse signal leads the B-phase pulse signal is the forward direction, and the case where the A-phase pulse signal lags behind the B-phase pulse signal is the reverse direction.

[0048] The present application determines the rotation direction by detecting the phase difference between the A-phase pulse signal and the B-phase pulse signal through the trigger module 200, which can ensure that the camera 300 can receive the trigger and take pictures only when the rotation direction of the motor meets the preset direction, avoiding false detection due to reverse movement and improving the accuracy and reliability of detection.

[0049] For example, the trigger module 200 may adopt a SA1400-PEG EtherCAT position comparison trigger module 200. The trigger module 200 may provide multiple data output channels and multiple data input channels for triggering external devices or performing specific actions to meet the needs of different application scenarios. The trigger module 200 may also adopt other models of trigger modules 200, which are not specifically limited in this application.

[0050] In the embodiment of the present application, the camera 300 is electrically connected to the trigger module 200, and the camera 300 is used to collect image information of the target object according to the trigger signal. Specifically, the camera 300 includes a communication unit 310 and a line scan camera 320, the communication unit 310 is used to receive the trigger signal; the line scan camera 320 is used to collect image information according to the trigger signal.

[0051] The communication unit 310 is used to receive a trigger signal and transmit the trigger signal to the line scan camera 320. The line scan camera 320 starts to collect images when receiving the trigger signal. Specifically, the line scan camera 320 is a special imaging device. Different from the traditional area array camera 300, the line scan camera 320 uses a single row of pixels to scan the scene line by line to construct a complete image. It is usually used in industrial inspection, document scanning, printed product inspection and other fields.

[0052] In the embodiment of the present application, the host 400 is connected to the camera 300, and the host 400 is used to send a control signal to control the communication unit 310 to periodically switch between an on state and an off state. The host 400 is a central processing unit, usually a computer.

[0053] For example, the host 400 can send an on signal to control the camera 300 to be in an on state, and send an off signal to control the camera 300 to be in an off state. In the present application, the host 400 can send a control command to the camera 300 to activate the camera 300 to start working, and can turn off the camera 300 when it is not necessary to capture images, so as to realize flexible control of the state of the camera 300 by sending a control signal by the host 400.

[0054] In an embodiment of the present application, the communication unit 310 is also used to receive image information and transmit the image information to the host 400, and the host 400 is used to obtain image acquisition results based on the image information. After the line scan camera 320 captures the image information, the communication unit 310 can also receive the image data and transmit the image data to the host 400 through a high-speed interface. After the host 400 receives the image data, it can use image processing software to further process and analyze it, and finally obtain the desired image acquisition results. For example, the host 400 can perform a series of processing on the image information, such as image enhancement, feature extraction, defect detection, etc. According to the processing results, the host 400 also generates image acquisition results, such as detection reports, defect markings, etc.

[0055] In the embodiment of the present application, the communication unit 310 is also used to receive image information and transmit the image information to the host 400, and the host 400 is used to obtain the image acquisition result according to the image information. It should be noted that the host 400 includes an image data display function.

[0056] For example, the communication unit 310 is connected to the host 400 by wired communication, and the communication unit 310 is connected to the host 400 through a physical cable for transmitting image data and control signals. In some other embodiments, the communication unit 310 is connected to the host 400 by wireless communication, and the communication unit 310 can be connected to the host 400 through wireless communication technologies such as Wi-Fi, Bluetooth, and Zigbee for transmitting image data and control signals.

[0057] In the embodiment of the present application, there are multiple encoders 100 and multiple line scan cameras 320. The trigger module 200 includes a trigger unit, multiple data input channels and multiple data output channels. The number of data input channels matches the number of encoders 100, and the number of data output channels matches the number of line scan cameras 320. Each encoder 100 is used to obtain a corresponding pulse signal according to the rotation state of the corresponding motor. Each pulse signal is transmitted to the trigger unit through the corresponding data input channel to generate a corresponding trigger signal. Each trigger signal is transmitted to the communication unit 310 through the corresponding data output channel. Each line scan camera 320 is used to collect image information of the corresponding target object according to the corresponding trigger signal.

[0058] For example, for multiple automated production lines that need to be inspected, each encoder 100 is installed on a rotating component of a conveyor system, and the rotating component is used to control the movement of the conveyor, and a line scan camera 320 is installed on the corresponding station of each automated production line to collect image information of the corresponding target object. Each encoder 100 is used to obtain a corresponding pulse signal according to the state of the corresponding rotating component, the trigger module 200 has multiple data input channels and multiple data output channels, and the communication unit 310 can also transmit multiple trigger signals to the corresponding line scan camera 320 through multiple data transmission channels, wherein the host 400 can also configure different trigger frequencies for different pulse signals.

[0059] This system realizes image acquisition of multiple targets through the collaborative work of multiple encoders 100 and multiple line scan cameras 320, and is suitable for industrial inspection scenarios that require simultaneous monitoring of multiple objects. In this application, the encoder 100 and line scan camera 320 on each workstation can work independently to achieve synchronous detection of multiple workstations. At the same time, the system can increase or decrease the number of encoders 100 and line scan cameras 320 according to actual needs, and technicians in this field can flexibly configure them according to actual needs.

[0060] In some other embodiments, the number of encoders 100 is one, and the number of line scan cameras 320 is multiple; the trigger module 200 includes a trigger unit, a data input channel and multiple data output channels, and the number of data output channels matches the number of line scan cameras 320; the encoder 100 is used to obtain a pulse signal according to the state of the motor, and the pulse signal is transmitted to the trigger unit through the data input channel to generate a trigger signal, and the trigger signal is transmitted to the communication unit 310 through multiple output channels, and the multiple line scan cameras 320 are used to collect image information of multiple targets according to the trigger signal.

[0061] For example, there are multiple targets to be detected on a certain automated production line, and the encoder 100 is installed on the rotating component of the conveyor system, which is used to control the movement of the conveyor, and multiple line scan cameras 320 are installed on multiple stations of the automated production line to collect image information of multiple targets. The trigger module 200 has a data input channel and multiple data output channels, and the communication unit 310 can also transmit information to the corresponding line scan camera 320 through multiple data transmission channels.

[0062] The system only needs one encoder 100, which reduces the complexity of the hardware. The trigger signals of all line scan cameras 320 are based on the pulse signal of the same encoder 100, ensuring the synchronization of image acquisition. The present application can increase or decrease the number of line scan cameras 320 as needed to adapt to different application scenarios. Those skilled in the art can flexibly configure according to actual needs.

[0063] In an embodiment of the present application, the host 400 is also used to configure the pulse width; the trigger module 200 is used to generate a trigger signal according to a preset trigger frequency and a preset pulse width when the rotation direction of the motor meets the preset rotation direction.

[0064] The host 400 can not only configure the trigger frequency but also the pulse width, so that when the motor meets the preset rotation direction, the trigger module 200 generates a trigger signal according to the preset trigger frequency and pulse width. The pulse width refers to the duration of a pulse signal, and the trigger frequency refers to the number of times the trigger signal occurs per unit time. The present application configures the pulse width and trigger frequency through the host 400, and can configure the corresponding trigger situation according to the detection requirements in a targeted manner to adapt to different detection requirements.

[0065] Figure 2The connection diagram of the trigger module 200 and the encoder 100 of the camera trigger system in one embodiment of the present application is shown. Specifically, the trigger module 200 adopts the SA1400-PEG module, and the trigger module 200 and the encoder 100 are connected through the A-phase signal transmission channel and the B-phase signal transmission channel. The A-phase signal transmission channel is used to transmit the A-phase pulse signal, and the B-phase signal transmission channel is used to transmit the B-phase pulse signal. The SA1400-PEG module reads the encoder 100 information and can input the encoder 100 information through a 25-pin connector. See Figure 2 , the 7th pin of the trigger module 200 is connected to the 5V power supply of the encoder 100, the 11th pin of the trigger module 200 is connected to the ground (GND) of the encoder 100, the 8th pin (ENC_A+) of the trigger module 200 is connected to the A+ signal of the encoder 100, the 21st pin (ENC_A-) of the trigger module 200 is connected to the A- signal of the encoder 100, the 9th pin (ENC_B+) of the trigger module 200 is connected to the B+ signal of the encoder 100, and the 22nd pin (ENC_B-) of the trigger module 200 is connected to the B- signal of the encoder 100.

[0066] In the embodiment of the present application, the SA1400-PEG module and the communication unit 310 can transmit TTL signals to the line scan camera 320 through a 9-pin interface. In the embodiment of the present application, the SA1400-PEG module and the host 400 can be connected to the network card in the host 400 through an RJ45 network cable to achieve communication with the industrial computer.

[0067] See also Figure 3 , the present application also provides a camera triggering method, comprising the following steps:

[0068] S1, configure the trigger frequency; In step S1, the trigger frequency is configured by the host 400. For example, the trigger frequency can be configured in advance before the camera trigger system is used.

[0069] S2, generating a pulse signal according to the rotation state of the motor; in step S2, a pulse signal is generated according to the rotation state of the motor by the encoder 100. For example, the motor can be a motor such as a servo motor or a stepper motor. Specifically, the encoder 100 is installed on the rotating shaft of the motor. When the rotating shaft of the motor is in motion, the encoder 100 can send a pulse signal. Alternatively, the encoder 100 can be installed on a rotating component of the conveyor belt system to monitor the state of the conveyor belt. The present application does not limit the specific installation position of the encoder 100. Those skilled in the art can arrange the installation position of the encoder 100 according to the actual application scenario of the camera trigger system.

[0070] S3, judging the rotation direction of the motor according to the pulse signal, and generating a trigger signal according to a preset trigger frequency when the rotation direction of the motor meets the preset rotation direction; in step S3, judging the rotation direction of the motor according to the pulse signal by a trigger module, and generating a trigger signal according to a preset trigger frequency when the rotation direction of the motor meets the preset rotation direction. For example, the encoder 100 is installed on a rotating component of a conveyor belt system, and the rotating component is used to control the movement of the conveyor belt. When the rotation direction of the rotating component meets the preset rotation direction (for example, clockwise or counterclockwise), a trigger signal can be generated according to a preset trigger frequency, that is, it can ensure that the camera 300 is triggered to capture images only when the conveyor belt moves in the correct direction.

[0071] S4, collecting image information of the target object according to the trigger signal through the camera 300. In step S4, for example, the camera 300 includes a communication unit 310 and a line scan camera 320, the communication unit 310 is used to receive the trigger signal; the line scan camera 320 is used to collect image information according to the trigger signal. The communication unit 310 is used to receive the trigger signal and transmit the trigger signal to the line scan camera 320, and the line scan camera 320 starts to collect images when receiving the trigger signal.

[0072] The trigger module of the present application is used to generate a trigger signal according to a preset trigger frequency when the rotation direction of the motor meets the preset rotation direction. Therefore, the present application can ensure that the camera is triggered when the rotation direction of the motor is in the preset rotation direction, avoiding false detection of non-preset rotation directions. At the same time, the present application configures the pulse width and trigger frequency through the host, and can configure the corresponding trigger conditions according to the detection requirements in a targeted manner, thereby improving the accuracy and reliability of the detection and achieving more precise control; in addition, the system can also configure multi-channel input, multi-channel output and single-channel input, multi-channel output according to actual needs, which is suitable for richer detection needs.

[0073] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A camera triggering system, characterized in that: include: An encoder, connected to the motor, for generating a pulse signal according to the rotation state of the motor; A trigger module, electrically connected to the encoder, for determining the rotation direction of the motor according to the pulse signal, and generating the trigger signal according to a preset trigger frequency when the rotation direction satisfies a preset rotation direction; A camera, electrically connected to the trigger module, for collecting image information of the target object according to the trigger signal; The host is electrically connected to the trigger module and is used to configure the trigger frequency.

2. The camera triggering system according to claim 1, characterized in that: The camera comprises: A communication unit, configured to receive the trigger signal; The line scan camera is used to collect image information according to the trigger signal.

3. The camera triggering system according to claim 2, characterized in that: The number of the encoders is multiple, and the number of the line scan cameras is multiple; The trigger module includes a trigger unit, a plurality of data input channels and a plurality of data output channels, the number of the data input channels matches the number of the encoders, and the number of the data output channels matches the number of the line scan cameras; Each of the encoders is used to obtain a corresponding pulse signal according to the rotation state of the corresponding motor, each of the pulse signals is transmitted to the trigger unit through the corresponding data input channel to generate a corresponding trigger signal, each of the trigger signals is transmitted to the communication unit through the corresponding data output channel, and each of the line scan cameras is used to collect image information of the corresponding target object according to the corresponding trigger signal.

4. The camera triggering system according to claim 2, characterized in that: The number of the encoder is one, and the number of the line scan cameras is multiple; The trigger module includes a trigger unit, a data input channel and a plurality of data output channels, and the number of the data output channels matches the number of the line scan cameras; The encoder is used to obtain a pulse signal according to the rotation state of the motor, and the pulse signal is transmitted to the trigger unit through the data input channel to generate a trigger signal, and the trigger signal is transmitted to the communication unit through the multiple output channels. The multiple line scan cameras are used to collect image information of the multiple targets according to the trigger signal.

5. The camera triggering system according to claim 1, characterized in that: The pulse signal includes an A-phase pulse signal and a B-phase pulse signal with a phase difference of 90°; The trigger module is used to obtain the rotation direction of the motor based on the A-phase pulse signal and the B-phase pulse signal; Among them, the rotation direction includes a forward direction and a reverse direction. The case where the A-phase pulse signal leads the B-phase pulse signal is the forward direction, and the case where the A-phase pulse signal lags behind the B-phase pulse signal is the reverse direction.

6. The camera triggering system according to claim 1, characterized in that: The host is also used to configure the pulse width; The trigger module is used to generate the trigger signal according to a preset trigger frequency and a preset pulse width when the rotation direction meets a preset rotation direction.

7. The camera triggering system according to claim 1, characterized in that: The host is connected to the camera, and is used to send a control signal to control the camera to periodically switch between the on state and the off state.

8. The camera triggering system according to claim 2, characterized in that: The communication unit is further used to receive the image information and transmit the image information to the host, and the host is used to obtain an image acquisition result according to the image information.

9. The camera triggering system according to claim 8, characterized in that: The communication unit is in communication connection with a host, and the host is used to display the image acquisition result.

10. A camera triggering method, characterized in that: The following steps are involved: Configure the trigger frequency; Generate a pulse signal according to the rotation state of the motor; Determining the rotation direction of the motor according to the pulse signal, and generating a trigger signal according to a preset trigger frequency when the rotation direction meets a preset rotation direction; The camera collects image information of the target object according to the trigger signal.

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