CN107271811B - Electromagnetic compatibility test system and method - Google Patents
Electromagnetic compatibility test system and method Download PDFInfo
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- CN107271811B CN107271811B CN201710369504.4A CN201710369504A CN107271811B CN 107271811 B CN107271811 B CN 107271811B CN 201710369504 A CN201710369504 A CN 201710369504A CN 107271811 B CN107271811 B CN 107271811B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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Abstract
The invention provides an electromagnetic compatibility test system and a method thereof, wherein the electromagnetic compatibility test system comprises: the device comprises a blade, a driving device and a processor; the driving device is used for driving the blades to rotate; the blade is used for being shot by an image acquisition device to be tested; the processor is used for acquiring the picture shot by the image acquisition device and displaying the picture to a user. The electromagnetic compatibility test system and the method provided by the invention can judge whether the static image is an image picture stagnation shown by the electromagnetic interference of the image acquisition device, and effectively improve the accuracy of the electromagnetic compatibility test.
Description
Technical Field
The invention relates to the automobile part testing technology, in particular to an electromagnetic compatibility testing system and method.
Background
With the continuous development of the automobile industry, the automobile keeping quantity is gradually increased, and the requirements of people on automobiles are higher and higher. At present, many automobiles are equipped with vehicle-mounted image acquisition devices such as cameras or automobile data recorders, and in order to ensure the performance of the image acquisition devices, electromagnetic compatibility tests need to be carried out on the image acquisition devices.
In the prior art, the electromagnetic compatibility test process of the vehicle-mounted image acquisition device mainly comprises the following steps: the vehicle-mounted image acquisition device is placed in an electromagnetic compatibility test environment, pictures in the environment are shot, after the test is completed, a worker checks the pictures shot by the device, whether the electromagnetic compatibility of the vehicle-mounted image acquisition device meets the requirements or not is determined, and when the situations of unclear pictures or black screens and the like occur, the situation that the electromagnetic compatibility does not meet the requirements can be judged.
The method has the defects that no method is available for judging whether a static image is in a normal environment state or an image picture stagnation caused by the fact that a tested vehicle-mounted image acquisition device is subjected to electromagnetic interference, so that the accuracy of the electromagnetic compatibility test is poor.
Disclosure of Invention
The invention provides an electromagnetic compatibility test system and method, which are used for solving the technical problem that an image acquisition device in the prior art is poor in electromagnetic compatibility test accuracy.
The invention provides an electromagnetic compatibility test system, comprising: a blade, a drive device, and a processor;
the driving device is used for driving the blades to rotate;
the blade is used for being shot by an image acquisition device to be tested;
the processor is used for acquiring the picture shot by the image acquisition device and displaying the picture to a user.
Further, the processor is used for being connected with the image acquisition device so as to receive the pictures shot by the image acquisition device.
Further, the electromagnetic compatibility test system further includes: a first photoelectric converter, a second photoelectric converter and an optical fiber;
the first photoelectric converter is connected with the image acquisition device and used for converting the electric signal output by the image acquisition device into an optical signal;
one end of the optical fiber is connected with the first photoelectric converter, and the other end of the optical fiber is connected with the second photoelectric converter, and the optical fiber is used for transmitting the optical signal generated by the first photoelectric converter to the second photoelectric converter;
the second photoelectric converter is connected with the processor and used for converting the received optical signal into an electric signal and inputting the electric signal to the processor.
Further, the electromagnetic compatibility test system further includes: a first camera;
the first camera is connected with the processor and used for shooting the picture displayed by the image acquisition device and sending the shot picture to the processor.
Further, the electromagnetic compatibility test system further includes: a second camera;
the second camera is used for shooting the blade and sending a shot picture to the processor;
the processor is used for displaying the picture shot by the first camera and the picture shot by the second camera to a user.
Further, the processor is further configured to:
determining the position of a blade in an image shot by an image acquisition device at a preset moment according to the picture shot by the first camera;
determining the actual position of the blade at the preset moment according to the picture shot by the second camera;
judging whether the position of the blade in the image shot by the image acquisition device at the preset moment is consistent with the actual position;
and if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement.
Further, the processor is further configured to:
determining the rotating speed of the blade in the picture shot by the image acquisition device according to the picture shot by the first camera;
judging whether the rotating speed of the blade shot by the image acquisition device is consistent with the actual rotating speed of the blade or not;
and if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement.
Further, the driving device includes: a blowing unit and an air volume control unit;
the blowing unit is used for blowing air to the blades so as to drive the blades to rotate;
the air volume control unit is used for controlling the air volume blown out by the blowing unit.
Further, the processor is connected with the driving device;
the processor is further configured to:
receiving rotating speed information input by a user;
and controlling the driving device to adjust the rotating speed of the blade according to the rotating speed information.
Further, the processor is connected with the driving device;
the processor is further configured to:
receiving precision requirement information input by a user for the image acquisition device;
determining the corresponding blade rotating speed according to the precision requirement information;
and controlling the driving device to adjust the rotating speed of the blade according to the corresponding rotating speed of the blade.
The invention also provides an electromagnetic compatibility testing method, which comprises the following steps:
acquiring a picture shot by an image acquisition device, wherein the image acquisition device is used for shooting rotating blades;
and displaying the picture to a user.
Further, the picture that the acquisition image acquisition device was shot includes:
and acquiring a picture of the display screen of the image acquisition device shot by the first camera.
Further, the displaying the picture to the user includes:
acquiring a picture of the blade shot by a second camera;
and displaying the picture shot by the first camera and the picture shot by the second camera to a user, so that the user can determine whether the electromagnetic compatibility of the image acquisition device meets the requirement by comparing the pictures shot by the two cameras.
Further, the displaying the picture to the user includes:
determining the rotating speed of the blade in the picture shot by the image acquisition device according to the picture shot by the first camera;
judging whether the rotating speed of the blade shot by the image acquisition device is consistent with the actual rotating speed of the blade or not;
and if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement.
Further, the electromagnetic compatibility testing method further comprises the following steps:
receiving rotating speed information input by a user;
and adjusting the rotating speed of the blade according to the rotating speed information.
Further, the electromagnetic compatibility testing method further comprises the following steps:
receiving precision requirement information input by a user for the image acquisition device;
determining the corresponding blade rotating speed according to the precision requirement information;
and adjusting the rotating speed of the blade according to the corresponding rotating speed of the blade.
The electromagnetic compatibility testing system and the electromagnetic compatibility testing method provided by the invention comprise the blade, the driving device and the processor, wherein the driving device is used for driving the blade to rotate, the blade is used for being shot by an image acquisition device to be tested, the processor is used for acquiring a picture shot by the image acquisition device and displaying the picture to a user, so that the user can monitor whether the rotation state of the blade in the picture shot by the image acquisition device is consistent with the actual rotation state of the blade in real time, judge whether the electromagnetic compatibility performance of the image acquisition device meets the requirement according to a comparison result, judge whether a static image is an image picture stagnation shown by the image acquisition device due to electromagnetic interference, and effectively improve the accuracy of the electromagnetic compatibility testing.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic compatibility testing system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electromagnetic compatibility testing system according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electromagnetic compatibility testing system according to a third embodiment of the present invention;
fig. 4 is a flowchart of an electromagnetic compatibility testing method according to a fourth embodiment of the present invention.
Reference numerals:
1-blade 2-processor 3-image acquisition device 4-blowing unit
5-air volume control unit 6-power supply 7-first camera 8-second camera
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present application, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The words "if", as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a commodity or system that includes the element.
Example one
The embodiment of the invention provides an electromagnetic compatibility test system. Fig. 1 is a schematic structural diagram of an electromagnetic compatibility testing system according to an embodiment of the present invention. As shown in fig. 1, the electromagnetic compatibility testing system in this embodiment may include: a blade 1, a drive device, and a processor 2;
the driving device is used for driving the blade 1 to rotate;
the blade 1 is used for being shot by an image acquisition device 3 to be tested;
the processor is used for acquiring the picture shot by the image acquisition device and displaying the picture to a user.
The image capturing device 3 to be tested may be a camera or a vehicle event data recorder. The image acquisition device 3 can be applied to automobiles and can also be used in other occasions.
The portion enclosed by the dotted line in fig. 1 represents an electromagnetic compatibility environment such as an electromagnetic compatibility radiation darkroom or the like. The image acquisition apparatus 3 is placed in an electromagnetic compatibility test environment. The electromagnetic compatibility test environment can generate certain electromagnetic interference to the image acquisition device 3, so as to test whether the electromagnetic compatibility of the image acquisition device 3 meets the requirements.
The blade 1 may also be placed in the electromagnetic compatibility test environment, and the blade 1 may be a blade that passes the electromagnetic compatibility test and is not affected by electromagnetic interference signals in the electromagnetic compatibility test environment.
The drive means and the blades 1 may be integrated into a single integral component, such as a fan. Alternatively, the blade 1 and the driving means may be two separate components, and the driving means may specifically include a blowing unit 4 and a wind control unit 5. The blowing unit 4 is used for blowing air to the blades 1, so as to drive the blades 1 to rotate. The air volume control unit 5 is used for controlling the air volume blown out by the blowing unit.
Because the electrically driven moving object is added in the test environment to generate certain influence on the test result, in order to avoid introducing unnecessary electromagnetic interference, the driving device comprises the blowing unit 4 and the air flow control unit 5, the air can be used for driving the blades 1 to rotate to manufacture a moving object in the test environment, the moving object is taken as an object shot by the image acquisition device 3, and the accuracy of the test result is ensured.
The blade 1 may not be placed in the electromagnetic compatibility test environment, in which case the blade 1 may be driven by a blowing unit 4, or the blade 1 may be driven by an electrically powered driving device such as a motor or the like.
The processor 2 is configured to obtain a picture taken by the image acquisition device 3, and display the picture to a user. In this embodiment, the processor 2 may be connected to the image capturing device 3, and receive the picture captured by the image capturing device 3.
The processor 2 and the image acquisition device 3 can be connected through wires, in order to avoid influencing the electromagnetic compatibility test environment, the wires are arranged outside the electromagnetic compatibility test environment, the image acquisition device 3 can be close to the edge of the electromagnetic compatibility test environment, for example, the edge is arranged along the wall, and the influence of the wires on the electromagnetic compatibility test environment can be prevented.
Alternatively, the processor 2 and the image acquisition device 3 may be connected by an optical fiber. Specifically, the output end of the image capturing device 3 may be connected to a first photoelectric converter, the input end of the processor 2 is connected to a second photoelectric converter, one end of the optical fiber is connected to the first photoelectric converter, and the other end of the optical fiber is connected to the second photoelectric converter. The electrical signal output by the image acquisition device 3 is converted into an optical signal by the first photoelectric converter, transmitted to the second photoelectric converter through the optical fiber, and converted into an electrical signal by the second photoelectric converter and then input to the processor 2. The optical fiber can be arranged in the electromagnetic compatibility testing environment, and cannot influence the electromagnetic compatibility testing environment.
The processor 2 may display the picture taken by the image acquisition device 3 to a user, so that the user can determine whether the electromagnetic compatibility of the image acquisition device 3 meets the requirement according to the taken picture.
Further, the electromagnetic compatibility test system may further include: a power supply 6. A power supply 6 may be used to power the image acquisition device 3.
In practical application, the tested image acquisition device 3 can be placed in an electromagnetic compatibility test environment, the rotating blade 1 is shot, the shot picture is sent to the processor 2, the shot picture is displayed to a user by the processor 2, if the rotating state of the blade 1 in the picture shot by the image acquisition device 3 is consistent with the actual rotating state of the blade 1, the electromagnetic compatibility performance of the image acquisition device 3 is judged to meet the requirement, namely the electromagnetic compatibility test result of the image acquisition device 3 is qualified, if the blade 1 rotates all the time in reality and the blade 1 in the shot picture is in a static state, the image acquisition device 3 is judged to be subjected to electromagnetic interference to cause image stagnation, and at the moment, the electromagnetic compatibility of the image acquisition device 3 can be judged to not meet the requirement.
The electromagnetic compatibility testing system provided by the embodiment comprises a blade 1, a driving device and a processor 2, wherein the driving device is used for driving the blade 1 to rotate, the blade 1 is used for being shot by an image acquisition device 3 to be tested, the processor 2 is used for acquiring a picture shot by the image acquisition device 3 and displaying the picture to a user, so that the user can monitor whether the rotation state of the blade 1 in the picture shot by the image acquisition device 3 is consistent with the actual rotation state of the blade 1 in real time and judge whether the electromagnetic compatibility performance of the image acquisition device 3 meets the requirement according to a comparison result, whether a static image is an image picture stagnation shown by the fact that the image acquisition device is subjected to electromagnetic interference can be judged, and the accuracy of the electromagnetic compatibility testing is effectively improved.
Example two
The second embodiment of the invention provides an electromagnetic compatibility test system. Different from the first embodiment, in the present embodiment, the first camera 7 captures a picture captured by the image capturing device 3 and sends the picture to the processor 2.
Fig. 2 is a schematic structural diagram of an electromagnetic compatibility testing system according to a second embodiment of the present invention. As shown in fig. 2, the electromagnetic compatibility testing system in this embodiment may include: the blade 1, the driving device, the processor 2 and the first camera 7;
the driving device is used for driving the blade 1 to rotate;
the blade 1 is used for being shot and displayed by an image acquisition device 3 to be tested;
the first camera 7 is connected with the processor 2 and is used for shooting the picture displayed by the image acquisition device 3 and sending the shot picture to the processor 2;
the processor 2 is configured to display the picture taken by the first camera 7 to a user.
In this embodiment, the structure and function of the blade 1 and the driving device are similar to each other, and are not described herein again.
The image acquisition device 3 is not directly connected with the processor 2, and the first camera 7 shoots the pictures acquired by the image acquisition device 3.
In particular, the image acquisition means 3 comprise a display screen. The image acquisition device 3 shoots the blade 1 in an electromagnetic compatibility test environment, and simultaneously displays the shot picture on a self-contained display screen.
The first camera 7 can shoot the display screen of the image acquisition device 3 and send the shot picture to the processor 2. The processor 2 may display the picture taken by the first camera 7 to a user, so that the user can determine whether the electromagnetic compatibility of the image acquisition device 3 meets the requirement according to the picture taken by the first camera 7.
Further, the first camera 7 can shoot a working indicator light of the image acquisition device 3 besides shooting the dynamic picture acquired by the image acquisition device 3, so that a user can comprehensively judge whether the image acquisition device 3 is in a normal working state or not by combining the picture and the working indicator light, and further judge whether the electromagnetic compatibility test can be passed or not.
In practical application, the image acquisition device 3 to be tested can be placed in an electromagnetic compatibility test environment, the rotating blade 1 is shot and displayed, the first camera 7 is used for shooting the picture displayed by the image acquisition device 3, the picture is displayed to a user through the processor 2, if the rotating state of the blade 1 in the picture shot by the first camera 7 is consistent with the actual rotating state of the blade 1, the electromagnetic compatibility of the image acquisition device 3 is judged to meet the requirement, namely the electromagnetic compatibility test result of the image acquisition device 3 is qualified, if the blade 1 rotates all the time in reality and the blade 1 in the shot picture is in a static state, the image acquisition device 3 is judged to have the picture stagnation caused by the electromagnetic interference, and at the moment, the electromagnetic compatibility of the image acquisition device 3 can be judged not to meet the requirement.
The electromagnetic compatibility testing system provided by the embodiment comprises a blade 1, a driving device, a first camera 7 and a processor 2, wherein the driving device is used for driving the blade 1 to rotate, the blade 1 is used for being shot and displayed by an image acquisition device 3 to be tested, the first camera 7 is connected with the processor 2 and is used for shooting a picture displayed by the image acquisition device 3 and sending the shot picture to the processor 2, the processor 2 is used for displaying the picture shot by the first camera 7 to a user, so that the user can monitor whether the rotation state of the blade 1 in the picture shot by the image acquisition device 3 is consistent with the actual rotation state of the blade 1 in real time and judge whether the electromagnetic compatibility of the image acquisition device 3 meets the requirement according to the comparison result, and can judge whether a static image is an image stagnation caused by electromagnetic interference of the image acquisition device, the accuracy of the electromagnetic compatibility test is effectively improved.
On the basis of the technical solutions provided in the above embodiments, it is preferable that the processor 2 is connected to the driving device. The processor 2 is further configured to: receiving rotating speed information input by a user; and controlling the driving device to adjust the rotating speed of the blade 1 according to the rotating speed information.
The user may input rotational speed information, for example indicating that the blade 1 rotates through 100 revolutions per minute, via the processor 2, said processor 2 controlling the drive means to adjust the rotational speed of the blade 1 in dependence of said rotational speed information. Specifically, the air volume control unit 6 can be controlled to increase or decrease the air volume according to the rotating speed information, so that the rotating speed of the blade 1 meets the requirements of the user, and the user can conveniently test the image acquisition device 3 under various rotating speed conditions.
Alternatively, the processor 2 is further configured to: receiving precision requirement information input by a user for the image acquisition device 3; determining a corresponding rotating speed according to the precision requirement information; and controlling the driving device to adjust the rotating speed of the blade 1 according to the corresponding rotating speed.
When testing the image capturing apparatus 3, it may be necessary to test whether the capturing speed of the image capturing apparatus 3 is sufficiently fast, in addition to the sharpness of the photographed picture. When the precision requirement on the image acquisition device 3 is high, the rotating speed of the blade 1 can be set to be high, so that whether the capturing speed of the image acquisition device 3 meets the requirement or not can be checked through the shot picture. When the accuracy requirement for the image acquisition device 3 is low, the rotating speed of the blade 1 can be set to be slow, as long as the rotation is ensured.
The user may input precision requirement information through the processor 2, which may be: high, medium and low, when the precision requirement information is high, the rotating speed of the blade 1 can be controlled to be higher; when the precision requirement information is medium, the rotating speed of the blade 1 can be controlled to be normal; when the accuracy requirement information is low, the rotation speed of the blade 1 can be controlled to be slow.
By receiving precision requirement information input by a user to the image acquisition device 3, determining a corresponding rotating speed according to the precision requirement information, and controlling the driving device to adjust the rotating speed of the blade 1, the automatic adjustment of the rotating speed of the blade 1 can be realized, so that the rotating speed of the blade 1 meets the test requirement of the image acquisition device 3, and convenience is provided for the user.
Further, the processor 2 may be further configured to: determining the rotating speed of the blade 1 in the picture shot by the image acquisition device 3 according to the picture shot by the first camera 7; judging whether the rotating speed of the blade 1 shot by the image acquisition device 3 is consistent with the actual rotating speed of the blade 1; and if the difference is not consistent, determining that the electromagnetic compatibility of the image acquisition device 3 does not meet the requirement.
Specifically, the positions of the blades 1 in the pictures shot by the image capturing device 3 at two different moments can be determined through an image processing technology, and the rotating speed of the blades 1 shot by the image capturing device 3 is determined according to the time difference between the two moments and the difference value of the corresponding positions, and compared with the actual rotating speed of the blades 1. If the difference is equal to or smaller than the rotation speed threshold, it indicates that the electromagnetic compatibility of the image acquisition device 3 meets the requirement, otherwise, the electromagnetic compatibility does not meet the requirement.
EXAMPLE III
The third embodiment of the invention provides an electromagnetic compatibility test system. In this embodiment, on the basis of the technical solution provided in the second embodiment, the second camera 8 is added to directly shoot the blade 1.
Fig. 3 is a schematic structural diagram of an electromagnetic compatibility testing system according to a third embodiment of the present invention. As shown in fig. 3, the electromagnetic compatibility testing system in this embodiment may include: the device comprises a blade 1, a driving device, a processor 2, a first camera 7 and a second camera 8;
the driving device is used for driving the blade 1 to rotate;
the blade 1 is used for being shot and displayed by an image acquisition device 3 to be tested;
the first camera 7 is connected with the processor 2 and is used for shooting the picture displayed by the image acquisition device 3 and sending the shot picture to the processor 2;
the second camera 8 is used for shooting the blade 1 and sending a shot picture to the processor 2;
the processor 2 is configured to display the picture captured by the first camera 7 and the picture captured by the second camera 8 to a user.
The second camera 8 is a camera which passes the electromagnetic compatibility performance test and is not affected by electromagnetic interference signals.
The first camera 7 shoots a picture displayed by the image acquisition device 3, the second camera 8 shoots an actual picture of the blade 1, and a user can check the picture shot by the first camera 7 and the picture shot by the second camera 8, if the pictures are consistent, the electromagnetic compatibility of the image acquisition device 3 meets the requirement, and if the pictures are not consistent, the electromagnetic compatibility of the image acquisition device is not met.
Further, the processor 2 may be further configured to:
determining the position of the blade 1 in an image shot by the image acquisition device 3 at a preset moment according to the picture shot by the first camera 7; determining the actual position of the blade 1 at the preset moment according to the picture shot by the second camera 8; judging whether the position of the blade 1 in the image shot by the image acquisition device 3 at the preset moment is consistent with the actual position; and if the difference is not consistent, determining that the electromagnetic compatibility of the image acquisition device 3 does not meet the requirement.
The predetermined time may be set in advance according to actual needs, or may receive a predetermined time input by a user. For example, the predetermined time may be 10:00 or 10:10 a.m., or the predetermined time may be nth minute after starting photographing.
At a preset moment, according to pictures shot by the two cameras, the actual positions of the blades 1 and the positions of the blades 1 shot by the image acquisition device 3 are determined through an image processing technology, comparison is carried out, if the actual positions are consistent with the positions of the blades 1 shot by the image acquisition device 3, the electromagnetic compatibility of the image acquisition device 3 meets the requirement, and otherwise, the electromagnetic compatibility of the image acquisition device 3 does not meet the requirement.
The determination of whether the actual position of the blade 1 and the position of the blade 1 captured by the image capturing device 3 are the same in this embodiment may refer to whether an error between the actual position of the blade 1 and the position of the blade 1 captured by the image capturing device 3 is smaller than a position threshold, and if the error is smaller than the position threshold, the two are considered to be the same.
In practical application, whether the actual pictures and the shot pictures at a plurality of moments are consistent or not can be judged, if the actual pictures and the shot pictures at each moment are consistent, the electromagnetic compatibility of the image acquisition device 3 is considered to meet the requirement, and if the actual pictures and the shot pictures at a certain moment are not consistent, the electromagnetic compatibility of the image acquisition device 3 is considered to not meet the requirement.
The electromagnetic compatibility test system provided by the embodiment sends the actual picture of the blade 1 and the picture of the blade 1 collected by the image collecting device 3 to the processor 2 at the same time by arranging the second camera 8 for shooting the blade 1, so that a user can judge whether the electromagnetic compatibility of the image processing device meets the requirements, and the accuracy of the electromagnetic compatibility test can be further improved.
In other embodiments, the first camera 7 may be omitted, the image capturing device 3 is connected to the processor 2 in the first embodiment, the image capturing device 3 sends the captured image to the processor 2, and the image captured by the second camera 8 may be directly compared with the image captured by the image capturing device 3, so as to determine whether the image capturing device 3 satisfies the electromagnetic compatibility.
In the technical solutions provided in the above embodiments, the first camera 7/the second camera 8 may be placed in an electromagnetic compatibility test environment, or may not be placed in the electromagnetic compatibility test environment.
If the device is to be placed in an electromagnetic compatibility testing environment, the first camera 7/the second camera 8 may be a camera that passes an electromagnetic compatibility test and is not affected by electromagnetic interference signals in the electromagnetic compatibility testing environment.
The processor 2 and the first camera 7/the second camera 8 can be connected by wires, in order to avoid introducing unnecessary electromagnetic interference, the wires are arranged outside the electromagnetic compatibility testing environment, the first camera 7/the second camera 8 can be arranged close to the edge of the electromagnetic compatibility testing environment, for example, arranged against a wall, and the wires can be prevented from influencing the electromagnetic compatibility testing environment.
Alternatively, the processor 2 and the first camera 7/the second camera 8 may be connected by an optical fiber. For a specific connection manner, reference may be made to a connection manner between the processor 2 and the image capturing device 3, which is not described herein again. The optical fiber can be arranged in the electromagnetic compatibility testing environment, and cannot influence the electromagnetic compatibility testing environment.
Example four
The fourth embodiment of the invention provides an electromagnetic compatibility testing method. Fig. 4 is a flowchart of an electromagnetic compatibility testing method according to a fourth embodiment of the present invention. As shown in fig. 4, the method in this embodiment may include:
101, acquiring a picture shot by an image acquisition device, wherein the image acquisition device is used for shooting a rotating blade;
and 102, displaying the picture to a user.
The electromagnetic compatibility testing method in this embodiment may be implemented based on the electromagnetic compatibility testing system described in any of the above embodiments, and specific implementation processes and principles may refer to the above embodiments, which are not described herein again.
According to the electromagnetic compatibility test method provided by the embodiment, the image shot by the image acquisition device is obtained, wherein the image acquisition device is used for shooting the rotating blade, and the image is displayed to the user, so that the user can judge whether the static image is an image stagnation caused by the electromagnetic interference of the image acquisition device, and the accuracy of the electromagnetic compatibility test is effectively improved.
Further, the picture that the acquisition image acquisition device was shot includes: and acquiring a picture of the display screen of the image acquisition device shot by the first camera.
Further, the displaying the screen to the user may include:
acquiring a picture of the blade shot by a second camera;
and displaying the picture shot by the first camera and the picture shot by the second camera to a user, so that the user can determine whether the electromagnetic compatibility of the image acquisition device meets the requirement by comparing the pictures shot by the two cameras.
Further, the displaying the screen to the user may include:
determining the rotating speed of the blade in the picture shot by the image acquisition device according to the picture shot by the first camera;
judging whether the rotating speed of the blade shot by the image acquisition device is consistent with the actual rotating speed of the blade or not;
and if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement.
Further, the electromagnetic compatibility testing method further comprises the following steps:
receiving rotating speed information input by a user;
and controlling a driving device to adjust the rotating speed of the blade according to the rotating speed information.
Further, the electromagnetic compatibility testing method further comprises the following steps:
receiving precision requirement information input by a user for the image acquisition device;
determining the corresponding blade rotating speed according to the precision requirement information;
and controlling a driving device to adjust the rotating speed of the blade according to the corresponding rotating speed of the blade.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An electromagnetic compatibility test system, comprising: the device comprises a blade, a driving device and a processor;
the driving device is used for driving the blades to rotate;
the blade is used for being shot by an image acquisition device to be tested;
the processor is used for acquiring a picture shot by the image acquisition device and displaying the picture to a user;
the electromagnetic compatibility test system further includes: a first camera;
the first camera is connected with the processor and used for shooting the picture displayed by the image acquisition device and sending the shot picture to the processor;
the processor is further configured to:
determining the rotating speed of the blade in the picture shot by the image acquisition device according to the picture shot by the first camera;
judging whether the rotating speed of the blade shot by the image acquisition device is consistent with the actual rotating speed of the blade or not;
if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement;
further comprising: a second camera;
the second camera is used for shooting the blade and sending a shot picture to the processor;
the processor is used for displaying the picture shot by the first camera and the picture shot by the second camera to a user;
the processor is further configured to:
determining the position of a blade in an image shot by an image acquisition device at a preset moment according to the picture shot by the first camera;
determining the actual position of the blade at the preset moment according to the picture shot by the second camera;
judging whether the position of the blade in the image shot by the image acquisition device at the preset moment is consistent with the actual position;
if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement;
the blade is a blade passing the electromagnetic compatibility test and is not influenced by electromagnetic interference signals in the electromagnetic compatibility test environment.
2. The electromagnetic compatibility test system of claim 1, wherein the drive means comprises: a blowing unit and an air volume control unit;
the blowing unit is used for blowing air to the blades so as to drive the blades to rotate;
the air volume control unit is used for controlling the air volume blown out by the blowing unit.
3. The electromagnetic compatibility test system according to claim 1 or 2, wherein the processor is connected to the drive device;
the processor is further configured to:
receiving rotating speed information input by a user;
and controlling the driving device to adjust the rotating speed of the blade according to the rotating speed information.
4. The electromagnetic compatibility test system according to claim 1 or 2, wherein the processor is connected to the drive device;
the processor is further configured to:
receiving precision requirement information input by a user for the image acquisition device;
determining the corresponding blade rotating speed according to the precision requirement information;
and controlling the driving device to adjust the rotating speed of the blade according to the corresponding rotating speed of the blade.
5. An electromagnetic compatibility testing method, comprising:
acquiring a picture shot by an image acquisition device, wherein the image acquisition device is used for shooting rotating blades;
displaying the picture to a user;
the picture that obtains image acquisition device and shoot includes:
acquiring a picture of a display screen of the image acquisition device shot by a first camera;
the displaying the picture to the user comprises:
determining the rotating speed of the blade in the picture shot by the image acquisition device according to the picture shot by the first camera;
judging whether the rotating speed of the blade shot by the image acquisition device is consistent with the actual rotating speed of the blade or not;
if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement;
the displaying the picture to the user further comprises:
acquiring a picture of the blade shot by a second camera;
the picture shot by the first camera and the picture shot by the second camera are displayed to a user, so that the user can determine whether the electromagnetic compatibility of the image acquisition device meets the requirement or not by comparing the pictures shot by the two cameras;
the method further comprises the following steps: determining the position of a blade in an image shot by an image acquisition device at a preset moment according to the picture shot by the first camera;
determining the actual position of the blade at the preset moment according to the picture shot by the second camera;
judging whether the position of the blade in the image shot by the image acquisition device at the preset moment is consistent with the actual position;
if not, determining that the electromagnetic compatibility of the image acquisition device does not meet the requirement;
the blade is a blade passing the electromagnetic compatibility test and is not influenced by electromagnetic interference signals in the electromagnetic compatibility test environment.
6. The emc testing method of claim 5, further comprising:
receiving rotating speed information input by a user;
and adjusting the rotating speed of the blade according to the rotating speed information.
7. The emc testing method of claim 5, further comprising:
receiving precision requirement information input by a user for the image acquisition device;
determining the corresponding blade rotating speed according to the precision requirement information;
and adjusting the rotating speed of the blade according to the corresponding rotating speed of the blade.
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