CN215449441U - Front-facing camera electromagnetic compatibility immunity test auxiliary test system - Google Patents
Front-facing camera electromagnetic compatibility immunity test auxiliary test system Download PDFInfo
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- CN215449441U CN215449441U CN202120664249.8U CN202120664249U CN215449441U CN 215449441 U CN215449441 U CN 215449441U CN 202120664249 U CN202120664249 U CN 202120664249U CN 215449441 U CN215449441 U CN 215449441U
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Abstract
The utility model relates to an auxiliary testing system for testing electromagnetic compatibility immunity of a front camera, which comprises a shielding projector, an adjustable fixing clamp, a screen angle adjustable support, a communication signal photoelectric conversion device, a high-definition video signal photoelectric conversion device and a computer. The test system of this application can let leading camera detect with real same environment, does not influence the normal work of leading camera, thereby can resist live the interference in the electromagnetic compatibility immunity test and provide stable detection video for leading camera, can ensure the accuracy and the validity of electromagnetic compatibility immunity test.
Description
Technical Field
The utility model relates to the technical field of test systems, in particular to an auxiliary test system for testing the electromagnetic compatibility immunity of a front camera.
Background
In the modern era, the integration of internet technology and automobiles promotes the development of automobiles towards the direction of intellectualization and automation, and the front-facing camera is used as an intelligent automobile automatic driving acquisition front road condition information acquisition and analysis module and can be more and more applied.
Front-facing cameras are Advanced Driver Assistance Systems (ADAS) and autonomous computer vision devices. Support Advanced Driver Assistance System (ADAS) functions in conjunction with image processing and master controller: AHL (adaptive high beam/low beam), TSR (traffic sign recognition), LDW/LKA (lane departure warning/lane keeping), AEB (automatic emergency braking), etc., using a special comprehensive environment model based on its own set of innovative and proprietary algorithms, relating to the semantics of the driving path, moving objects and scenes, such as traffic lights and their colors, traffic signs, turn indicators, gaze direction in pedestrian driving areas, road markings, etc.
The electromagnetic Compatibility (EMC) is called Electro Magnetic Compatibility, which is defined as the ability of equipment and systems to work normally in their electromagnetic environment without causing electromagnetic disturbance that anything in the environment cannot bear; secondly, the electromagnetic disturbance generated by the equipment cannot generate excessive influence, namely electromagnetic disturbance (EMI), on other electronic products.
With the development of science and technology, electronic products are more and more, electronic products on vehicles are more and more, and the electromagnetic compatibility of the products is more and more important. The data collected and analyzed by the front camera is dynamic, and in order to ensure the electromagnetic compatibility performance of the front camera, the front camera needs to dynamically sense (such as a running vehicle, a change of a lane line and the like) the front camera when performing an electromagnetic compatibility (EMC) test, particularly an EMS test. Electromagnetic compatibility (EMC) immunity tests are performed in special places (such as a semi-anechoic chamber-isolating other external environments from electromagnetic interference to be tested), and the requirements of the EMC test places cannot be met by adopting common equipment.
Disclosure of Invention
The utility model aims to solve the technical problem of the prior art and provides an auxiliary testing system for testing the electromagnetic compatibility immunity of a front camera aiming at the characteristics of the front camera and the requirements of an electromagnetic compatibility testing field.
The embodiment of the utility model provides an auxiliary testing system for testing the electromagnetic compatibility immunity of a front camera, which comprises a shielding projector, an adjustable fixing clamp of the front camera, a screen, an adjustable screen angle support of the screen, a communication signal photoelectric conversion device, a high-definition video signal photoelectric conversion device and a computer, wherein the computer is in communication connection with the front camera assembled on the adjustable fixing clamp through an optical fiber line sequentially through a vehicle-mounted communication box and the communication signal photoelectric conversion device; the shielding projector is used for projecting a video to a screen assembled on the screen angle-adjustable support, and the angle of the screen is adjusted to meet the requirement that the shooting range of the front camera on the screen is matched with the projection range of the shielding projector on the screen.
In some of these embodiments, the shielded projector, the front-facing camera, and the screen are all located in a semi-anechoic chamber or shielded room.
In some embodiments, the shielding projector is erected behind the camera of the front camera and higher than the front camera by a support frame, and the support frame with the adjustable screen angle is erected in front of the camera of the front camera.
Compared with the prior art, the auxiliary testing system for the electromagnetic compatibility immunity test of the front camera provided by the embodiment of the utility model comprises a shielding projector, an adjustable fixing clamp of the front camera, a screen, an adjustable screen angle support of the screen, a communication signal photoelectric conversion device, a high-definition video signal photoelectric conversion device and a computer, wherein the computer is in communication connection with the front camera assembled on the adjustable fixing clamp through an optical fiber line sequentially through a vehicle-mounted communication box and the communication signal photoelectric conversion device; the shielding projector is used for projecting a video to a screen assembled on the screen angle-adjustable support, and the angle of the screen is adjusted to meet the requirement that the shooting range of the front camera on the screen is matched with the projection range of the shielding projector on the screen. The test system provided by the embodiment of the utility model can enable the front-facing camera to detect the environment same as the real environment (pedestrians, lane lines and the like), does not influence the normal work of the front-facing camera, can resist the interference in the electromagnetic compatibility (EMC) immunity test so as to provide a stable detection video for the front-facing camera, and can ensure the accuracy and the effectiveness of the electromagnetic compatibility (EMC) immunity test.
The details of one or more embodiments of the utility model are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the utility model.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a block diagram of a test system according to an embodiment of the present invention.
In the figure, 1, a shielding projector, 2, an adjustable fixing clamp, 3, a screen, 4, an adjustable screen angle support, 5, a communication signal photoelectric conversion device, 6, a high-definition video signal photoelectric conversion device, 7, a computer, 8, an optical fiber line, 9, an HDMI line, 10, a front camera, 11, a test table, 12, a semi-anechoic chamber or a shielding chamber, 13 and a vehicle-mounted communication box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments provided by the present invention, belong to the protection scope of the present invention. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one of ordinary skill in the art that the described embodiments of the present invention can be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the utility model are not to be construed as limiting in number, and may be construed to cover both the singular and the plural. The present invention relates to the terms "comprises," "comprising," "includes," "including," "has," "having" and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in the description of the utility model are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The terms "first," "second," "third," and the like in reference to the present invention are used merely to distinguish between similar objects and not necessarily to represent a particular ordering for the objects.
As shown in fig. 1, an auxiliary testing system for testing electromagnetic compatibility immunity of a front camera comprises a shielding projector 1, an adjustable fixing clamp 2 of a front camera 10, a screen 3 and an angle support of the screen 3, a communication signal photoelectric conversion device 5, a high-definition video signal photoelectric conversion device 6 and a computer 7, wherein the computer 7 is in communication connection with the front camera 10 assembled on the adjustable fixing clamp 2 through an optical fiber line 8 and the communication signal photoelectric conversion device, the computer 7 is in communication connection with the front camera 10 assembled on the adjustable fixing clamp 2 through a vehicle-mounted communication box 13 and the communication signal photoelectric conversion device 5 sequentially through an optical fiber line 8, and the high-definition video signal photoelectric conversion device 6 is in communication connection with the shielding projector 1 through the optical fiber line 8; the shielding projector 1 is used for projecting a video onto a screen 3 assembled on an angle bracket capable of adjusting the angle of the screen 3, and the angle of the screen 3 is adjusted to meet the condition that the shooting range of the front camera 10 on the screen 3 is matched with the projection range of the shielding projector 1 on the screen 3. The computer 7 in the present invention refers to an electronic device with data processing capability, such as a PC computer, tablet, mobile phone, etc. The high-definition video signal photoelectric conversion device 6 may employ a device such as model HX-SH 81V. The communication signal photoelectric conversion device 5 may be, for example, YOA series products of technologies easy to control.
In some of these embodiments, the shielded projector 1, the front camera 10, and the screen 3 are all provided in a semi-anechoic chamber or shielded room. The shielding projector 1 is erected behind the front camera 10 through a support frame and is higher than the position of the front camera 10, and the angle-adjustable support frame of the screen 3 is erected in front of the front camera 10. EMC, electromagnetic compatibility test, refers to the ability of a device or system to operate satisfactorily in its electromagnetic environment and not to generate intolerable electromagnetic interference to any device in its environment. EMC design is complementary to EMC testing. The goodness of the EMC design is measured by EMC testing. Only in the whole process of EMC design and development of a product, the compatibility prediction and evaluation of EMC can find possible electromagnetic interference early and take necessary suppression and protection measures so as to ensure the electromagnetic compatibility of the system. Otherwise, when the product is shaped or the system is built, the problem of incompatibility is found, and the design needs to be modified or remedial measures need to be adopted at great expense on manpower and material resources. However, it is often difficult to solve the problem completely, and it causes many troubles in use of the system. Definition of the shielded room: closed cells are specially designed to attenuate radio frequency electromagnetic energy. The function of the shielding chamber is as follows: for EMC measurements, the shielded room provides a satisfactory test environment. The semi-anechoic chamber is similar to the full anechoic chamber and is a six-sided box body which is designed by shielding, and the interior of the box body is covered with electromagnetic wave absorbing materials. The semi-anechoic chamber simulates the ideal open field situation, i.e. the field has an infinitely large, well conducting ground plane. In a semi-anechoic chamber, since the ground is not covered with a wave-absorbing material, a reflected path will be created, so that the signal received by the receiving antenna will be the sum of the direct path and reflected path signals.
In the embodiment of the utility model, the shielding projector has the following functions:
1. the video with high 4k (3840 x 2160) definition is provided for the front camera to detect, the detection efficiency of the light camera cannot be influenced by the problem of resolution ratio with the video detected by the front camera, and the accuracy and effectiveness of the test result are ensured.
2. The strength of radiation immunity of most of the existing whole automobile factories to the parts can be resisted in an electromagnetic compatibility (EMC) immunity test of the automobile parts, and the condition that a test result is influenced by the influence of auxiliary equipment in the immunity test process of a front-facing camera is avoided. Thereby ensuring the accuracy of the test result.
The fixed wooden box is used for storing the shielding projector, transferring the shielding projector and serving as a supporting platform for the shielding projector together with the supporting bracket in the test.
The high-definition video signal photoelectric conversion equipment has the functions of photoelectric conversion, and the optical fiber can isolate the interference outside a semi-anechoic chamber or a shielding chamber, so that the test accuracy is improved.
The screen angle adjustable support enables the video projected by the shielding projector to be matched with the camera lens through angle adjustment.
The adjustable fixing clamp of the front camera is placed on the test table 11 and used for fixing the front camera, and the lens of the front camera is matched with the detection video through adjustment. The front camera is ensured to be in an actual working state.
The computer is used for providing detected video for the front camera, communicating with the front camera and monitoring corresponding signals of the front camera.
The working principle of the embodiment of the utility model is as follows: the computer passes through the HDMI line connection photoelectric conversion equipment, and photoelectric conversion equipment passes through optic fibre connection shielding projecting apparatus, and the adjustable mounting fixture of adjusting adjustable screen angle support and leading camera makes leading camera be in reasonable detection position, calculates the screen size that needs the projection according to the detection angle of the camera lens of leading camera, adjusts the size of projection video through the remote controller, and corresponding definition.
Compared with the prior art, the auxiliary testing system for the electromagnetic compatibility immunity test of the front camera provided by the embodiment of the utility model comprises a shielding projector, an adjustable fixing clamp of the front camera, a screen, an adjustable screen angle support of the screen, a communication signal photoelectric conversion device, a high-definition video signal photoelectric conversion device and a computer, wherein the computer is in communication connection with the front camera assembled on the adjustable fixing clamp through an optical fiber line sequentially through a vehicle-mounted communication box and the communication signal photoelectric conversion device; the shielding projector is used for projecting a video to a screen assembled on the screen angle-adjustable support, and the angle of the screen is adjusted to meet the requirement that the shooting range of the front camera on the screen is matched with the projection range of the shielding projector on the screen. The test system provided by the embodiment of the utility model can enable the front-facing camera to detect the environment same as the real environment (pedestrians, lane lines and the like), does not influence the normal work of the front-facing camera, can resist the interference in the electromagnetic compatibility (EMC) immunity test so as to provide a stable detection video for the front-facing camera, and can ensure the accuracy and the effectiveness of the electromagnetic compatibility (EMC) immunity test.
It should be understood by those skilled in the art that various features of the above-described embodiments can be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments are not described in detail, but rather, all combinations of features which are not inconsistent with each other should be construed as being within the scope of the present disclosure.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (3)
1. An auxiliary testing system for testing the electromagnetic compatibility immunity of a front camera is characterized by comprising a shielding projector (1), an adjustable fixing clamp (2) of the front camera (10), a screen (3) and an angle bracket of the screen (3), communication signal photoelectric conversion equipment (5), high-definition video signal photoelectric conversion equipment (6) and a computer (7), the computer (7) is in communication connection with a front camera (10) assembled on the adjustable fixing clamp (2) through an optical fiber line (8) and sequentially through a vehicle-mounted communication box (13) and the communication signal photoelectric conversion equipment (5), the computer (7) is in communication connection with the high-definition video signal photoelectric conversion equipment (6) through an HDMI wire (9), the high-definition video signal photoelectric conversion equipment (6) is in communication connection with the shielding projector (1) through an optical fiber line (8); the shielding projector (1) is used for projecting a video to the screen (3) assembled on the angle support of the adjustable screen (3), and the angle of the screen (3) is adjusted to meet the requirement that the front camera (10) is in the shooting range on the screen (3) and the projection range of the shielding projector (1) on the screen (3) are matched.
2. The auxiliary testing system for testing the front camera electromagnetic compatibility immunity according to claim 1, wherein the shielding projector (1), the front camera (10) and the screen (3) are all arranged in a semi-anechoic chamber or a shielding chamber.
3. The auxiliary testing system for the electromagnetic compatibility immunity test of the front camera according to claim 2, wherein the shielding projector (1) is erected behind the front camera (10) and higher than the front camera (10) by a support frame, and the angle-adjustable screen (3) support frame is erected in front of the front camera (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120664249.8U CN215449441U (en) | 2021-04-01 | 2021-04-01 | Front-facing camera electromagnetic compatibility immunity test auxiliary test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120664249.8U CN215449441U (en) | 2021-04-01 | 2021-04-01 | Front-facing camera electromagnetic compatibility immunity test auxiliary test system |
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| CN215449441U true CN215449441U (en) | 2022-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115951158A (en) * | 2023-03-13 | 2023-04-11 | 中国汽车技术研究中心有限公司 | Device and method for testing electromagnetic immunity of electronic rearview mirror and storage medium |
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2021
- 2021-04-01 CN CN202120664249.8U patent/CN215449441U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115951158A (en) * | 2023-03-13 | 2023-04-11 | 中国汽车技术研究中心有限公司 | Device and method for testing electromagnetic immunity of electronic rearview mirror and storage medium |
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