CN112415484A - Urban road electromagnetic environment acquisition and simulation test method and system for automobile radar - Google Patents
Urban road electromagnetic environment acquisition and simulation test method and system for automobile radar Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/40—Means for monitoring or calibrating
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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
Abstract
The application discloses an urban road electromagnetic environment acquisition and simulation test method and a test system for an automobile radar, wherein the test system comprises an electromagnetic environment acquisition unit, a data conversion calculation module, an environment simulation measurement and control unit, a power amplifier, an annular transmitting antenna, a biconical transmitting antenna, a horn transmitting antenna, a tested radar, a barrier simulator and a tested radar, and can acquire the electromagnetic environment of an automobile when the automobile runs on a real urban road to perform electromagnetic compatibility test on the automobile radar, so that an electromagnetic environment close to the running condition of the real road is provided for the automobile radar test, and the test result is more real and effective; the electromagnetic compatibility test method can simulate and reproduce the electromagnetic environment of the automobile running on the real urban road in a laboratory to test the electromagnetic compatibility of the automobile radar, and provides convenience for the quick and batch test of the automobile radar.
Description
Technical Field
The application relates to the technical field of automobile part testing, in particular to an urban road electromagnetic environment acquisition and simulation testing method and system for an automobile radar.
Background
In recent years, with the progress and development of artificial intelligence and 5G communication technology, the intelligent driving automobile technology also becomes the key point for research and development of the automobile industry. The intelligent automobile driving technology not only frees the hands of a driver, but also can provide drivers and passengers with more intelligent, safer and more economical travel modes, and the technology becomes an automobile technology which is mainly supported and developed by the government of China. The radar is an indispensable part for sensing the environment of the intelligent driving automobile, and the functional reliability and the electromagnetic compatibility of the radar directly influence the running safety of the intelligent driving automobile, so that the electromagnetic compatibility test of the automobile radar becomes a key point for the attention of the automobile industry. Currently, the test items for automotive radars mainly include: the test items can only complete the basic functional test of the automobile radar in a single electromagnetic environment, but cannot perform real, effective, rapid and batch test on the electromagnetic compatibility of the automobile radar in the electromagnetic environment of a real urban road.
Disclosure of Invention
In order to solve the problems that the electromagnetic compatibility of the automobile radar in the electromagnetic environment of the real urban road cannot be truly, effectively, quickly and massively tested in the test of the automobile radar, the invention provides the urban road electromagnetic environment acquisition and simulation test method and the urban road electromagnetic environment simulation test system for the automobile radar.
The invention provides a method for collecting and simulating an urban road electromagnetic environment for an automobile radar, which comprises the following steps,
the method comprises the steps that electromagnetic environment signals of an automobile, collected, analyzed and integrated and stored when the automobile runs on a real urban road, are transmitted to a data conversion calculation module (2) through an electromagnetic environment collection unit (1);
converting the acquired electromagnetic environment signal data into iterative data required by an environment simulation measurement and control unit (3) through a data conversion calculation module (2);
the received iteration data are generated into original simulation signals of the road electromagnetic environment through an environment simulation measurement and control unit (3) and a control signal generating device (4);
simulating the electromagnetic environment of an automobile running on a real urban road by using the original simulation signal of the road electromagnetic environment in an anechoic chamber (11) through a power amplifier device (5), an annular transmitting antenna (6), a biconical transmitting antenna (7) and a horn transmitting antenna (8);
running a radar (9) to be detected in an electromagnetic environment in which a simulated automobile runs on a real urban road;
simulating obstacles which may appear in a traffic road environment by an obstacle simulator (10);
transmitting the operation data to an environment simulation measurement and control unit (3) through a radar (9) to be measured;
and the environment simulation measurement and control unit (3) judges the electromagnetic compatibility of the radar (9) to be measured according to the operation data.
The urban road electromagnetic environment acquisition and simulation test method for the automobile radar further comprises the steps of receiving electromagnetic environment signals of an automobile running on a real urban road through a signal acquisition antenna of the electromagnetic environment acquisition unit (1) when the electromagnetic environment signals of the automobile running on the real urban road are acquired, analyzed and integrated through the electromagnetic environment acquisition unit (1).
The urban road electromagnetic environment acquisition and simulation test method for the automobile radar further comprises the steps of receiving electromagnetic environment signals of an automobile when the automobile runs on a real urban road through the signal acquisition antenna of the electromagnetic environment acquisition unit (1), transmitting the electromagnetic environment signals to the frequency spectrum analysis module (110) through the signal acquisition antenna, and carrying out frequency spectrum analysis on the received electromagnetic environment signals of the automobile when the automobile runs on the real urban road through the frequency spectrum analysis module (110) and converting the electromagnetic environment signals into digital quantity.
The urban road electromagnetic environment acquisition and simulation test method for the automobile radar further comprises the steps of transmitting the digital quantity to the data storage module (120) through the spectrum analysis module (110), and integrating and storing data analyzed by the spectrum analysis module (110) through the data storage module (120).
The urban road electromagnetic environment acquisition and simulation test method for the automobile radar further comprises the step of enabling the signal acquisition antenna to comprise a first signal acquisition antenna (101), a second signal acquisition antenna (102) and a third signal acquisition antenna (103).
The invention provides a system for collecting and simulating urban road electromagnetic environment for automobile radar, which is used for realizing the method for collecting and simulating urban road electromagnetic environment for automobile radar, and comprises the following steps:
the electromagnetic environment acquisition unit (1) is used for acquiring, analyzing and integrating the stored electromagnetic environment signals of the automobile when the automobile runs on a real urban road;
the data conversion calculation module (2) is used for receiving the electromagnetic environment signals transmitted by the electromagnetic environment acquisition unit (1) and converting the acquired electromagnetic environment signal data into iteration data required by the environment simulation measurement and control unit (3);
the environment simulation measurement and control unit (3) is used for controlling the signal generation device (4) to generate the received iteration data into original simulation signals of the road electromagnetic environment;
the power amplifier device (5), the annular transmitting antenna (6), the biconical transmitting antenna (7) and the horn transmitting antenna (8) are used for simulating the electromagnetic environment of the automobile when the automobile runs on a real urban road from the original analog signal of the road electromagnetic environment in the anechoic chamber (11);
the tested radar (9) is used for simulating the running of the automobile in the electromagnetic environment when the automobile runs on a real urban road and transmitting running data to the environment simulation measurement and control unit (3);
an obstacle simulator (10) for simulating obstacles that may be present in a traffic road environment;
and the environment simulation measurement and control unit (3) is used for judging the electromagnetic compatibility of the radar (9) to be measured according to the operation data.
The urban road electromagnetic environment acquisition and simulation test system for the automobile radar further comprises an electromagnetic environment acquisition unit (1) which comprises a signal acquisition antenna used for receiving electromagnetic environment signals when an automobile runs on a real urban road.
The urban road electromagnetic environment acquisition and simulation test system for the automobile radar further comprises an electromagnetic environment acquisition unit (1) which comprises a spectrum analysis module (110) and is used for receiving the electromagnetic environment signals transmitted by the signal acquisition antenna, carrying out spectrum analysis on the received electromagnetic environment signals when an automobile runs on a real urban road and converting the electromagnetic environment signals into digital quantity.
The urban road electromagnetic environment acquisition and simulation test system for the automobile radar further comprises an electromagnetic environment acquisition unit (1) and a data storage module (120), wherein the data storage module is used for receiving the digital quantity transmitted by the frequency spectrum analysis module (110) and integrating and storing the digital quantity data.
The urban road electromagnetic environment acquisition and simulation test system for the automobile radar further comprises a first signal acquisition antenna (101), a second signal acquisition antenna (102) and a third signal acquisition antenna (103).
The urban road electromagnetic environment acquisition and simulation test method and the urban road electromagnetic environment simulation test system for the automobile radar can achieve the following beneficial effects:
according to the urban road electromagnetic environment acquisition and simulation test method and the test system for the automobile radar, the electromagnetic environment of an automobile when the automobile runs on a real urban road can be acquired to carry out electromagnetic compatibility test on the automobile radar, the electromagnetic environment close to the running condition of the real road is provided for the automobile radar test, and the test result is more real and effective; the electromagnetic compatibility test method can simulate and reproduce the electromagnetic environment of the automobile running on the real urban road in a laboratory to test the electromagnetic compatibility of the automobile radar, and provides convenience for the quick and batch test of the automobile radar.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of an electromagnetic environment acquisition unit of the urban road electromagnetic environment acquisition and simulation test system for the automotive radar.
Fig. 2 is a schematic structural diagram of the urban road electromagnetic environment acquisition and simulation test system for the automotive radar.
In the figure, 1 is an electromagnetic environment acquisition unit, 2 is a data conversion calculation module, 3 is an environment simulation measurement and control unit, 4 is a signal generation device, 5 is a power amplifier device, 6 is an annular transmitting antenna, 7 is a biconical transmitting antenna, 8 is a horn transmitting antenna, 9 is a detected radar, 10 is an obstacle simulator, and 11 is an anechoic chamber; the spectrum analysis module 110, the data storage module 120, the first signal acquisition antenna 101, the second signal acquisition antenna 102, and the third signal acquisition antenna 103.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. 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 application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Example 1
An urban road electromagnetic environment acquisition and simulation test method for automobile radar, as shown in figure 1 and figure 2, comprises the following steps,
the electromagnetic environment signal acquired, analyzed and integrated and stored when the automobile runs on a real urban road is transmitted to a data conversion calculation module 2 through an electromagnetic environment acquisition unit 1;
converting the acquired electromagnetic environment signal data into iteration data required by an environment simulation measurement and control unit 3 through a data conversion calculation module 2;
the environment simulation measurement and control unit 3 controls the signal generation device 4 to generate the received iteration data into original simulation signals of the road electromagnetic environment;
simulating the electromagnetic environment of the automobile running on the real urban road by the original simulation signal of the road electromagnetic environment in an anechoic chamber 11 through a power amplifier 5, an annular transmitting antenna 6, a biconical transmitting antenna 7 and a horn transmitting antenna 8;
the detected radar 9 operates in the electromagnetic environment when the simulated automobile operates on the real urban road;
simulating obstacles that may appear in a traffic road environment by an obstacle simulator 10;
transmitting the operation data to the environment simulation measurement and control unit 3 through the radar 9 to be measured;
and the environment simulation measurement and control unit 3 judges the electromagnetic compatibility of the radar 9 to be measured according to the operation data.
The urban road electromagnetic environment collection and simulation test system for the automobile radar in the embodiment is used for realizing the urban road electromagnetic environment collection and simulation test method for the automobile radar in the embodiment, and comprises the following steps:
the electromagnetic environment acquisition unit 1 is used for acquiring, analyzing and integrating the stored electromagnetic environment signals of the automobile when the automobile runs on a real urban road;
the data conversion calculation module 2 is used for receiving the electromagnetic environment signal transmitted by the electromagnetic environment acquisition unit 1 and converting the acquired electromagnetic environment signal data into iteration data required by the environment simulation measurement and control unit 3;
the environment simulation measurement and control unit 3 is used for controlling the signal generation device 4 to generate the received iteration data into an original simulation signal of the road electromagnetic environment;
the power amplifier device 5, the annular transmitting antenna 6, the biconical transmitting antenna 7 and the horn transmitting antenna 8 are used for simulating the electromagnetic environment of the automobile running on a real urban road from the original simulation signal of the road electromagnetic environment in the anechoic chamber 11;
the tested radar 9 is used for simulating the running of the automobile in the electromagnetic environment when the automobile runs on a real urban road and transmitting running data to the environment simulation measurement and control unit 3;
an obstacle simulator 10 for simulating obstacles that may occur in a traffic road environment;
and the environment simulation measurement and control unit 3 is used for judging the electromagnetic compatibility of the radar 9 to be measured according to the operation data.
Example 2
The method for collecting and simulating urban road electromagnetic environment for automobile radar in embodiment 1 further includes receiving electromagnetic environment signals of an automobile when the automobile runs on a real urban road through a signal collecting antenna of the electromagnetic environment collecting unit 1 when the electromagnetic environment signals of the automobile when the automobile runs on the real urban road are collected, analyzed and integrated and stored through the electromagnetic environment collecting unit 1.
In the urban road electromagnetic environment collection and simulation test method for the automobile radar of the embodiment, further, after the signal collection antenna of the electromagnetic environment collection unit 1 receives the electromagnetic environment signal of the automobile when the automobile runs on a real urban road, the electromagnetic environment signal is transmitted to the spectrum analysis module 110 through the signal collection antenna, and the received electromagnetic environment signal of the automobile when the automobile runs on the real urban road is subjected to spectrum analysis and converted into digital quantity through the spectrum analysis module 110.
In the urban road electromagnetic environment collection and simulation test method for the automobile radar of the embodiment, further, the digital quantity is transmitted to the data storage module 120 through the spectrum analysis module 110, and the data analyzed by the spectrum analysis module 110 is integrated and stored through the data storage module 120.
The urban road electromagnetic environment acquisition and simulation test method for the automobile radar in the embodiment further comprises the step of setting the number of the signal acquisition antennas to be at least two.
In the method for collecting and simulating the electromagnetic environment of the urban road for the automobile radar, the signal collecting antenna further comprises a first signal collecting antenna 101, a second signal collecting antenna 102 and a third signal collecting antenna 103.
In the urban road electromagnetic environment acquisition and simulation test system for the automobile radar of the embodiment, the electromagnetic environment acquisition unit 1 further includes a signal acquisition antenna for receiving electromagnetic environment signals of an automobile when the automobile runs on a real urban road.
In the urban road electromagnetic environment acquisition and simulation test system for the automobile radar of the embodiment, the electromagnetic environment acquisition unit 1 further includes a spectrum analysis module 110, which is configured to receive the electromagnetic environment signal transmitted by the signal acquisition antenna, perform spectrum analysis on the received electromagnetic environment signal when the automobile runs on a real urban road, and convert the electromagnetic environment signal into a digital quantity.
In the urban road electromagnetic environment collection and simulation test system for the automobile radar of the embodiment, further, the electromagnetic environment collection unit 1 includes a data storage module 120, and is configured to receive the digital quantity transmitted by the spectrum analysis module 110, and integrate and store the digital quantity data.
The urban road electromagnetic environment acquisition and simulation test system for the automobile radar of the embodiment further comprises at least two signal acquisition antennas.
The urban road electromagnetic environment collection and simulation test system for the automobile radar in the embodiment further comprises a first signal collection antenna 101, a second signal collection antenna 102 and a third signal collection antenna 103.
The waveguide end of the horn transmitting antenna 8 is a gradually-opened circular or rectangular section, when the length of the horn part is kept unchanged, the phase difference between the mouth surface size and the quadratic power increases along with the increase of the horn opening angle, but the gain does not change along with the mouth surface size. If the frequency band of the horn needs to be expanded, the reflection at the neck and the mouth of the horn needs to be reduced; the reflection decreases as the size of the aperture increases. Biconic transmit antenna 7 is a broadband antenna with an omnidirectional radiation pattern in the H-plane, whose coaxial feed is connected to the transmit antenna by two 90 ° bends. The annular transmitting antenna 6 is formed by winding a metal wire into an annular structure such as a circle, a square, a triangle and the like, and two ends of the conductor are used as output ends.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. An urban road electromagnetic environment acquisition and simulation test method for automobile radar is characterized by comprising the following steps,
the method comprises the steps that electromagnetic environment signals of an automobile, collected, analyzed and integrated and stored when the automobile runs on a real urban road, are transmitted to a data conversion calculation module (2) through an electromagnetic environment collection unit (1);
converting the acquired electromagnetic environment signal data into iterative data required by an environment simulation measurement and control unit (3) through a data conversion calculation module (2);
the received iteration data are generated into original simulation signals of the road electromagnetic environment through an environment simulation measurement and control unit (3) and a control signal generating device (4);
simulating the electromagnetic environment of an automobile running on a real urban road by using the original simulation signal of the road electromagnetic environment in an anechoic chamber (11) through a power amplifier device (5), an annular transmitting antenna (6), a biconical transmitting antenna (7) and a horn transmitting antenna (8);
running a radar (9) to be detected in an electromagnetic environment in which a simulated automobile runs on a real urban road;
simulating obstacles which may appear in a traffic road environment by an obstacle simulator (10);
transmitting the operation data to an environment simulation measurement and control unit (3) through a radar (9) to be measured;
and the environment simulation measurement and control unit (3) judges the electromagnetic compatibility of the radar (9) to be measured according to the operation data.
2. The urban road electromagnetic environment collection and simulation test method for automobile radars according to claim 1, characterized in that, when the electromagnetic environment signal of the automobile running on the real urban road is collected, analyzed and integrated and stored by the electromagnetic environment collection unit (1), the electromagnetic environment signal of the automobile running on the real urban road is received by the signal collection antenna of the electromagnetic environment collection unit (1).
3. The urban road electromagnetic environment collection and simulation test method for automobile radars as claimed in claim 2, wherein after the electromagnetic environment signal generated when an automobile runs on a real urban road is received by the signal collection antenna of the electromagnetic environment collection unit (1), the electromagnetic environment signal is transmitted to the spectrum analysis module (110) through the signal collection antenna, and the received electromagnetic environment signal generated when the automobile runs on the real urban road is subjected to spectrum analysis and converted into a digital quantity through the spectrum analysis module (110).
4. The method for electromagnetic environment collection and simulation test of urban roads for automotive radars according to claim 3, characterized in that the digital quantity is transmitted to the data storage module (120) through the spectrum analysis module (110), and the data analyzed by the spectrum analysis module (110) is stored in an integrated manner through the data storage module (120).
5. The method for electromagnetic environment acquisition and simulation test of urban roads for automotive radars according to claim 1, characterized in that said signal acquisition antennas comprise a first signal acquisition antenna (101), a second signal acquisition antenna (102) and a third signal acquisition antenna (103).
6. An urban road electromagnetic environment acquisition and simulation test system for automobile radars, which is used for realizing the urban road electromagnetic environment acquisition and simulation test method for the automobile radars in any one of claims 1 to 5, and is characterized by comprising the following steps:
the electromagnetic environment acquisition unit (1) is used for acquiring, analyzing and integrating the stored electromagnetic environment signals of the automobile when the automobile runs on a real urban road;
the data conversion calculation module (2) is used for receiving the electromagnetic environment signals transmitted by the electromagnetic environment acquisition unit (1) and converting the acquired electromagnetic environment signal data into iteration data required by the environment simulation measurement and control unit (3);
the environment simulation measurement and control unit (3) is used for controlling the signal generation device (4) to generate the received iteration data into original simulation signals of the road electromagnetic environment;
the power amplifier device (5), the annular transmitting antenna (6), the biconical transmitting antenna (7) and the horn transmitting antenna (8) are used for simulating the electromagnetic environment of the automobile when the automobile runs on a real urban road from the original analog signal of the road electromagnetic environment in the anechoic chamber (11);
the tested radar (9) is used for simulating the running of the automobile in the electromagnetic environment when the automobile runs on a real urban road and transmitting running data to the environment simulation measurement and control unit (3);
an obstacle simulator (10) for simulating obstacles that may be present in a traffic road environment;
and the environment simulation measurement and control unit (3) is used for judging the electromagnetic compatibility of the radar (9) to be measured according to the operation data.
7. Urban road electromagnetic environment acquisition and simulation test system for automotive radars according to claim 6, characterized in that the electromagnetic environment acquisition unit (1) comprises a signal acquisition antenna for receiving electromagnetic environment signals of an automobile when running on a real urban road.
8. The urban road electromagnetic environment collection and simulation test system for automobile radars as claimed in claim 7, wherein electromagnetic environment collection unit (1) comprises a spectrum analysis module (110) for receiving the electromagnetic environment signal transmitted by the signal collection antenna, and performing spectrum analysis and conversion to digital quantity on the received electromagnetic environment signal when automobile runs on real urban road.
9. The urban road electromagnetic environment collection and simulation test system for automobile radars as claimed in claim 8, characterized in that the electromagnetic environment collection unit (1) comprises a data storage module (120) for receiving the digital quantity transmitted by the spectrum analysis module (110) and storing the digital quantity data in an integrated manner.
10. The urban road electromagnetic environment collection and simulation test system for automotive radars according to claim 6, characterized in that said signal collection antennas comprise a first signal collection antenna (101), a second signal collection antenna (102) and a third signal collection antenna (103).
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Application publication date: 20210226 |
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| RJ01 | Rejection of invention patent application after publication |