Signal synchronization method and system

Abstract

The present invention relates to a signal synchronization method and system, the method comprising: an image signal processing unit performs target detection processing on the first simulation image in response to receiving a first simulation image of a target to be tracked sent by an image simulation injection unit, generates a first control instruction, and sends the first control instruction to a servo control unit; or, the image signal processing unit performs target detection processing on the first real image in response to receiving a first real image of a target to be tracked sent by an optoelectronic imaging unit, generates a second control instruction, and sends the second control instruction to a servo control unit; the servo control unit completes the tracking turntable control response according to the first control instruction or the second control instruction in response to receiving the first control instruction or the second control instruction. The signal synchronization of closed-loop tracking of an optoelectronic tracking system in two different modes, namely, real object and image injection simulation, is realized, and the system is guaranteed to work stably in both modes.

Description

Technical Field

[0001] The present invention relates to the field of optoelectronic technology, and in particular to a signal synchronization method and system. Background Art

[0002] The optoelectronic tracking system can capture the target, automatically close the loop to track and output the tracking target information, and is widely used in military, security and other fields. The performance of the optoelectronic tracking system directly affects the application effect. It is very limited to test the performance of the optoelectronic tracking system only by means of indoor simulation or outdoor test.

[0003] The target to be tracked can be tracked based on the two methods of real object and image injection simulation, and the image signal processing unit can process the real image or simulation system of the target to be tracked. However, the working state of the optoelectronic tracking system in the two methods of real object and image injection simulation may be inconsistent, which may cause the problem of instability of the optoelectronic tracking system. There is no working method that combines the two methods of real object and image injection simulation in the prior art. That is, the optoelectronic tracking system in the prior art only includes an image signal processing unit, a servo control unit and an image simulation injection unit, or only includes an image signal processing unit, a servo control unit and an optoelectronic imaging unit (tracking turntable system). Therefore, how to combine the two methods of real object and image injection simulation to ensure the stability of the system is a problem that needs to be solved urgently. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a highly integrated millimeter wave phased array antenna unit.

[0005] In a first aspect, an embodiment of the present invention provides a signal synchronization method, including:

[0006] The image signal processing unit performs target detection processing on the first simulated image of the target to be tracked sent by the image simulation injection unit in response to receiving the first simulated image, generates a first control instruction, and sends the first control instruction to the servo control unit; or, the image signal processing unit performs target detection processing on the first real image in response to receiving the first real image of the target to be tracked sent by the photoelectric imaging unit, generates a second control instruction, and sends the second control instruction to the servo control unit;

[0007] In response to receiving the first control instruction or the second control instruction, the servo control unit completes the tracking turntable control response according to the first control instruction or the second control instruction.

[0008] In some embodiments, before the image signal processing unit receives the first simulated image sent by the image simulation injection unit or the first real image sent by the photoelectric imaging unit, the image signal processing unit includes:

[0009] The image signal processing unit generates a synchronization signal with a fixed frequency, and sends the synchronization signal to the servo control unit and the photoelectric imaging unit simultaneously.

[0010] In some embodiments, after the image signal processing unit simultaneously sends the synchronization signal to the servo control unit and before the image signal processing unit receives the first simulation image of the target to be tracked sent by the image simulation injection unit, the process further includes:

[0011] The servo control unit determines the current tracking turntable angle information in response to receiving the synchronization signal, and sends the current tracking turntable angle information to the image simulation injection unit;

[0012] The image simulation injection unit determines a first simulation image of the target to be tracked according to the current tracking turntable angle information.

[0013] In some embodiments, after the servo control unit sends the current tracking turntable angle information to the image simulation injection unit, the method includes:

[0014] The image simulation injection unit generates a second simulation image of the target to be tracked according to the current tracking turntable angle information, the second simulation image is a current frame simulation image, and the first simulation image is a previous frame simulation image.

[0015] In some embodiments, after the image signal processing unit simultaneously sends the synchronization signal to the photoelectric imaging unit and before the image signal processing unit receives the first real image of the target to be tracked sent by the photoelectric imaging unit, the process includes:

[0016] In response to receiving the synchronization signal, the optoelectronic imaging unit determines a first real image of the target to be tracked, and sends the first real image to the image signal processing unit.

[0017] In some embodiments, after the image signal processing unit simultaneously sends the synchronization signal to the photoelectric imaging unit and before the image signal processing unit receives the first real image of the target to be tracked sent by the photoelectric imaging unit, the process further includes:

[0018] In response to receiving the synchronization signal, the optoelectronic imaging unit generates a second real image of the target to be tracked, where the second real image is a real image of a current frame and the first real image is a real image of a previous frame.

[0019] In a second aspect, an embodiment of the present invention provides a signal synchronization system, comprising: an image signal processing unit and a servo control unit;

[0020] an image signal processing unit, configured to, in response to receiving a first simulated image of the target to be tracked sent by the image simulation injection unit, perform target detection processing on the first simulated image, generate a first control instruction, and send the first control instruction to the servo control unit; or, in response to receiving a first real image of the target to be tracked sent by the photoelectric imaging unit, perform target detection processing on the first real image, generate a second control instruction, and send the second control instruction to the servo control unit;

[0021] The servo control unit is used for completing the tracking turntable control response according to the first control instruction or the second control instruction in response to receiving the first control instruction or the second control instruction.

[0022] In some embodiments, the image signal processing unit is further used to generate a synchronization signal with a fixed frequency, and send the synchronization signal to the servo control unit and the optoelectronic imaging unit simultaneously.

[0023] In some embodiments, the signal synchronization system further includes: an image simulation injection unit;

[0024] The servo control unit is further used to determine the current tracking turntable angle information in response to receiving the synchronization signal, and send the current tracking turntable angle information to the image simulation injection unit;

[0025] The image simulation injection unit is used to determine a first simulation image of the target to be tracked according to the current tracking turntable angle information.

[0026] In some embodiments, the signal synchronization system further comprises: an optoelectronic imaging unit;

[0027] In response to receiving the synchronization signal, the optoelectronic imaging unit determines a first real image of the target to be tracked, and sends the first real image to the image signal processing unit.

[0028] In the embodiment of the present invention, the timing design of the response of the servo control unit tracking turntable is realized by receiving the real image, receiving the simulated image and image processing by the image signal processing unit, so as to realize the signal synchronization of the closed-loop tracking of the optoelectronic tracking system in two different modes, namely the real object and the image injection simulation. It is ensured that the system can work stably in both modes and work under the same synchronization signal state, which improves the consistency of the system working state in the two modes, thereby improving the effectiveness of the mutual comparison and verification of the two modes. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A flow chart of a signal synchronization method provided by an embodiment of the present invention;

[0030] Figure 2A schematic diagram of the timing of various signals in a signal synchronization system in a physical manner provided by an embodiment of the present invention;

[0031] Figure 3 A schematic diagram of the timing of various signals in a signal synchronization system in an image injection simulation mode provided by an embodiment of the present invention;

[0032] Figure 4 A schematic diagram of signal transmission of each unit in a signal synchronization system provided by an embodiment of the present invention.

[0033] Reference numerals:

[0034] 1. Image signal processing unit; 2. Servo control unit; 3. Image simulation injection unit; 4. Photoelectric imaging unit. DETAILED DESCRIPTION

[0035] Example embodiments will be described more fully below with reference to the accompanying drawings, but the example embodiments may be embodied in different forms and should not be understood as limited to the embodiments set forth herein. On the contrary, the purpose of providing these embodiments is to make the present invention thorough and complete and to enable those skilled in the art to fully understand the scope of the present invention.

[0036] In the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0037] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0038] The terms used herein are only used to describe specific embodiments and are not intended to limit the present invention. As used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. It will also be understood that when the terms "comprising" and / or "made of" are used in this specification, the presence of the features, wholes, steps, operations, elements and / or components is specified, but the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof is not excluded.

[0039] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with their meaning in the context of the relevant art and the present invention, and will not be understood to have an idealized or overly formal meaning unless explicitly defined as such herein.

[0040] When designing an optoelectronic tracking system, it is necessary to consider how to ensure that the system can work stably in both modes and that the working state is consistent, thereby improving the effectiveness of the mutual comparison and verification of the two modes. In order to enable those skilled in the art to better understand the technical solution, a signal synchronization method and system provided by the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] In a first aspect, an embodiment of the present invention provides a signal synchronization method. Figure 1 Schematic diagram of the flow of the signal synchronization method provided by the embodiment of the present invention. Figure 1 As shown, the signal synchronization method provided in this embodiment is implemented based on a signal synchronization system and includes the following steps.

[0042] Step S101, in response to receiving a first simulated image of a target to be tracked sent by an image simulation injection unit, the image signal processing unit performs target detection processing on the first simulated image, generates a first control instruction, and sends the first control instruction to a servo control unit; or, in response to receiving a first real image of a target to be tracked sent by an optoelectronic imaging unit, the image signal processing unit performs target detection processing on the first real image, generates a second control instruction, and sends the second control instruction to the servo control unit;

[0043] Step S102: In response to receiving the first control instruction or the second control instruction, the servo control unit completes a tracking turntable control response according to the first control instruction or the second control instruction.

[0044] In step S101-step S102, the image signal processing unit can receive the first real image of the target to be tracked sent by the photoelectric imaging unit so that the signal synchronization system works in a physical mode; it can also receive the first simulated image of the target to be tracked sent by the image simulation injection unit so that the signal synchronization system works in an image injection simulation mode. In either mode, when an image is sent to the image signal processing unit, the image signal processing unit starts to receive the image. After receiving a frame of image, the image signal processing unit performs target detection processing on the received image to obtain an image processing result (detecting the target and the angular deviation of the target from the center of the image), generates corresponding servo control instructions according to the image processing results, and sends the corresponding servo control instructions to the servo control unit. After receiving the servo control instructions, the servo control unit controls the rotation of the tracking turntable according to the servo instructions to complete the control response to the image processing results.

[0045] In the embodiment of the present invention, in both the real object mode and the image injection simulation mode, the image signal processing unit of the signal synchronization system processes the received image, sends the corresponding servo control instruction to the servo control system, drives the tracking turntable to rotate and pull the target to the center of the image, and realizes automatic closed-loop tracking of the target. The difference is that in the real object mode, the image signal processing unit receives the first real image of the photoelectric imaging unit, and in the image injection simulation mode, the image signal processing unit receives the first simulated image of the image simulation injection unit.

[0046] Through the timing design of the image signal processing unit receiving the real image, receiving the simulated image and image processing, and tracking the turntable control response of the servo control unit, the signal synchronization of the closed-loop tracking of the optoelectronic tracking system in two different modes, the real object and the image injection simulation, is realized. It is ensured that the system can work stably in both modes and work under the same synchronization signal state, which improves the consistency of the system working state in the two modes, thereby improving the effectiveness of the mutual comparison and verification of the two methods.

[0047] In some embodiments, before the image signal processing unit receives the first simulated image sent by the image simulation injection unit or the first real image sent by the photoelectric imaging unit, the image signal processing unit includes:

[0048] The image signal processing unit generates a synchronization signal with a fixed frequency, and sends the synchronization signal to the servo control unit and the photoelectric imaging unit simultaneously.

[0049] In this step, the image signal processing unit can use the crystal oscillator clock to generate a fixed-frequency synchronization signal (the synchronization signal is in the form of a pulse signal of a certain width, with the rising edge or falling edge of the pulse as the synchronization start time) as the reference synchronization signal for the entire signal synchronization system, and send it to the servo control unit and the photoelectric imaging unit at the same time.

[0050] In some embodiments, after the image signal processing unit simultaneously sends the synchronization signal to the servo control unit and before the image signal processing unit receives the first simulation image of the target to be tracked sent by the image simulation injection unit, the process further includes:

[0051] In response to receiving the synchronization signal, the servo control unit determines current tracking stage angle information and sends the current tracking stage angle information to the image simulation injection unit.

[0052] The image simulation injection unit determines a first simulation image of the target to be tracked according to the current tracking turntable angle information.

[0053] In the above steps, the servo control unit uses the received synchronization signal as a trigger signal and starts sending the current tracking turntable angle information to the image simulation injection unit at the synchronization start time. The first simulation image is the previous frame simulation image, and the image simulation injection unit can use the tracking turntable angle information as a trigger signal to send the previous frame simulation image.

[0054] It should be noted that, because the current tracking turntable angle information is sent by the servo control unit at a fixed time according to the synchronization signal, and has a synchronization relationship with the synchronization signal, the image simulation injection unit does not need to receive the synchronization signal, and only needs to use the received current tracking turntable angle information as a trigger signal for sending the previous frame of simulation image. After receiving the current tracking turntable angle information, the previous frame of simulation image is sent to the image signal processing unit. Figure 2 As shown, the servo control unit sends the current tracking turntable angle information to the image simulation injection unit after a certain delay time.

[0055] In some embodiments, after the servo control unit sends the current tracking turntable angle information to the image simulation injection unit, the method includes:

[0056] The image simulation injection unit generates a second simulation image of the target to be tracked according to the current tracking turntable angle information, and the second simulation image is a current frame simulation image.

[0057] In this step, the image simulation injection unit can use the tracking turntable angle information as a trigger signal for generating a current frame simulation image.

[0058] It should be noted that, because the tracking turntable angle information is sent by the servo control unit at a fixed time according to the synchronization signal, and has a synchronous relationship with the synchronization signal, the image simulation injection unit does not need to receive the synchronization signal, and only needs to use the received current tracking turntable angle information as a trigger signal for generating the current frame simulation image (such as Figure 2 After receiving the current tracking turntable angle information, the current frame simulation image is generated.

[0059] In some embodiments, after the image signal processing unit simultaneously sends the synchronization signal to the photoelectric imaging unit and before the image signal processing unit receives the first real image of the target to be tracked sent by the photoelectric imaging unit, the process includes:

[0060] In response to receiving the synchronization signal, the optoelectronic imaging unit determines a first real image of the target to be tracked, and sends the first real image to the image signal processing unit.

[0061] In this step, the photoelectric imaging unit can use the synchronization signal as a trigger signal for sending a previous frame of real image, and the first real image is the previous frame of real image.

[0062] In some embodiments, after the image signal processing unit simultaneously sends the synchronization signal to the photoelectric imaging unit and before the image signal processing unit receives the first real image of the target to be tracked sent by the photoelectric imaging unit, the process further includes:

[0063] In response to receiving the synchronization signal, the optoelectronic imaging unit generates a second real image of the target to be tracked, where the second real image is a real image of a current frame.

[0064] In this step, the optoelectronic imaging unit can use the synchronization signal as a trigger signal to generate the real image of the current frame. The second real image is a real infrared image.

[0065] In a preferred embodiment, Figure 3 As shown, the photoelectric imaging unit uses the received synchronization signal as a trigger signal, starts to generate the current frame real image at the synchronization start time, and starts to send the previous frame real image to the image signal processing unit after a fixed delay time after the synchronization start time.

[0066] In an embodiment of the present invention, the image signal processing unit generates a synchronization signal of a fixed frequency and sends it to the servo control unit and the photoelectric imaging unit. After receiving the synchronization signal, the servo control unit sends the current tracking turntable angle information to the image simulation injection unit. After receiving the synchronization signal, the photoelectric imaging unit generates the current frame real image and sends the previous frame real image to the image signal processing unit; after receiving the current tracking turntable angle information, the image simulation injection unit generates the current frame simulation image and sends the previous frame simulation image to the image signal processing unit. The image signal processing unit receives the previous frame real image sent by the photoelectric imaging unit or the previous frame simulation image sent by the image simulation injection unit, generates a corresponding servo control instruction after processing the received image, and sends the corresponding servo control instruction to the servo control unit. After receiving the servo control instruction, the servo control unit completes the tracking turntable control response according to the instruction. Through the timing design of the image signal processing unit, the servo control unit, the photoelectric imaging unit and the image simulation injection unit, the signal synchronization of the closed-loop tracking of the photoelectric tracking system in two different modes of real object and image injection simulation is realized. Therefore, the performance can be fully tested by taking the means of mutual comparison and verification of internal and external fields and organic combination. Ensure that the system can work stably in both modes and the working status is consistent, thereby improving the effectiveness of mutual comparison and verification of the two methods.

[0067] In a second aspect, an embodiment of the present invention provides a signal synchronization system.

[0068] Figure 4 Schematic diagram of the structure of the signal synchronization system provided by the embodiment of the present invention. Figure 4As shown, the signal synchronization system provided in this embodiment includes the following structure: comprising: an image signal processing unit 1 and a servo control unit 2;

[0069] The image signal processing unit 1 is used for, in response to receiving a first simulated image of the target to be tracked sent by the image simulation injection unit, performing target detection processing on the first simulated image, generating a first control instruction, and sending the first control instruction to the servo control unit; or, in response to receiving a first real image of the target to be tracked sent by the photoelectric imaging unit, the image signal processing unit 1 performs target detection processing on the first real image, generates a second control instruction, and sends the second control instruction to the servo control unit 2;

[0070] The servo control unit 2 is used for completing the tracking turntable control response according to the first control instruction or the second control instruction in response to receiving the first control instruction or the second control instruction.

[0071] In some embodiments, the image signal processing unit 1 is further used to generate a synchronization signal with a fixed frequency, and send the synchronization signal to the servo control unit 2 and the optoelectronic imaging unit simultaneously.

[0072] In some embodiments, the signal synchronization system further includes: an image simulation injection unit 3;

[0073] The servo control unit 2 is further used to determine the current tracking turntable angle information in response to receiving the synchronization signal, and send the current tracking turntable angle information to the image simulation injection unit 3;

[0074] The image simulation injection unit 3 is used to determine a first simulation image of the target to be tracked according to the current tracking turntable angle information.

[0075] In some embodiments, the signal synchronization system further includes: an optoelectronic imaging unit 4;

[0076] In response to receiving the synchronization signal, the optoelectronic imaging unit 4 determines a first real image of the target to be tracked, and sends the first real image to the image signal processing unit 1 .

[0077] Example embodiments have been disclosed herein, and although specific terms are employed, they are used and should be interpreted only in a general illustrative sense and not for limiting purposes. In some embodiments, it will be apparent to those skilled in the art that, unless otherwise expressly noted, features, characteristics, and / or elements described in conjunction with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in conjunction with other embodiments. Therefore, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A signal synchronization method, characterized in that: include: The image signal processing unit performs target detection processing on the first simulated image of the target to be tracked sent by the image simulation injection unit in response to receiving the first simulated image, generates a first control instruction, and sends the first control instruction to the servo control unit; or, the image signal processing unit performs target detection processing on the first real image in response to receiving the first real image of the target to be tracked sent by the photoelectric imaging unit, generates a second control instruction, and sends the second control instruction to the servo control unit; The servo control unit completes the tracking turntable control response according to the first control instruction or the second control instruction in response to receiving the first control instruction or the second control instruction; Before the image signal processing unit receives the first simulated image sent by the image simulation injection unit or the first real image sent by the photoelectric imaging unit, the image signal processing unit includes: The image signal processing unit generates a synchronization signal of a fixed frequency, and sends the synchronization signal to the servo control unit and the photoelectric imaging unit at the same time; after the image signal processing unit sends the synchronization signal to the servo control unit at the same time, before the image signal processing unit receives the first simulation image of the target to be tracked sent by the image simulation injection unit, the image signal processing unit further includes: The servo control unit determines the current tracking turntable angle information in response to receiving the synchronization signal, and sends the current tracking turntable angle information to the image simulation injection unit; The image simulation injection unit determines a first simulation image of the target to be tracked according to the current tracking turntable angle information; after the servo control unit sends the current tracking turntable angle information to the image simulation injection unit, it includes: The image simulation injection unit generates a second simulation image of the target to be tracked according to the current tracking turntable angle information, wherein the second simulation image is a current frame simulation image and the first simulation image is a previous frame simulation image; After the image signal processing unit simultaneously sends the synchronization signal to the photoelectric imaging unit, and before the image signal processing unit receives the first real image of the target to be tracked sent by the photoelectric imaging unit, the method includes: The optoelectronic imaging unit determines a first real image of the target to be tracked in response to receiving the synchronization signal, and sends the first real image to the image signal processing unit; After the image signal processing unit simultaneously sends the synchronization signal to the photoelectric imaging unit, and before the image signal processing unit receives the first real image of the target to be tracked sent by the photoelectric imaging unit, the method further includes: In response to receiving the synchronization signal, the optoelectronic imaging unit generates a second real image of the target to be tracked, where the second real image is a real image of a current frame and the first real image is a real image of a previous frame.

2. A signal synchronization system, characterized in that: include: An image signal processing unit and a servo control unit; an image signal processing unit, configured to, in response to receiving a first simulated image of the target to be tracked sent by the image simulation injection unit, perform target detection processing on the first simulated image, generate a first control instruction, and send the first control instruction to the servo control unit; or, in response to receiving a first real image of the target to be tracked sent by the photoelectric imaging unit, perform target detection processing on the first real image, generate a second control instruction, and send the second control instruction to the servo control unit; A servo control unit, configured to complete a tracking turntable control response according to the first control instruction or the second control instruction in response to receiving the first control instruction or the second control instruction; The image signal processing unit is also used to generate a synchronization signal with a fixed frequency, and send the synchronization signal to the servo control unit and the photoelectric imaging unit at the same time; The signal synchronization system further includes: an image simulation injection unit; The servo control unit is further used to determine the current tracking turntable angle information in response to receiving the synchronization signal, and send the current tracking turntable angle information to the image simulation injection unit; The image simulation injection unit is used to determine a first simulation image of the target to be tracked according to the current tracking turntable angle information; The signal synchronization system further includes: a photoelectric imaging unit; The optoelectronic imaging unit determines a first real image of the target to be tracked in response to receiving the synchronization signal, and sends the first real image to the image signal processing unit; The image simulation injection unit generates a second simulation image of the target to be tracked according to the current tracking turntable angle information, wherein the second simulation image is a current frame simulation image and the first simulation image is a previous frame simulation image; In response to receiving the synchronization signal, the optoelectronic imaging unit generates a second real image of the target to be tracked, where the second real image is a real image of a current frame and the first real image is a real image of a previous frame.

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