CN112684269A - Method and system for testing radiation immunity of automobile parts - Google Patents
Method and system for testing radiation immunity of automobile parts Download PDFInfo
- Publication number
- CN112684269A CN112684269A CN202011413346.6A CN202011413346A CN112684269A CN 112684269 A CN112684269 A CN 112684269A CN 202011413346 A CN202011413346 A CN 202011413346A CN 112684269 A CN112684269 A CN 112684269A
- Authority
- CN
- China
- Prior art keywords
- field intensity
- radiation immunity
- test
- immunity test
- curve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 312
- 230000036039 immunity Effects 0.000 title claims abstract description 228
- 230000005855 radiation Effects 0.000 title claims abstract description 226
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 83
- 238000011835 investigation Methods 0.000 claims description 18
- 239000013307 optical fiber Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009434 installation Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003471 anti-radiation Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012346 open field test Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010200 validation analysis Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Abstract
The invention discloses a method and a system for testing radiation immunity of automobile parts. The method comprises the following steps: the radiation immunity test equipment performs a whole vehicle radiation immunity test on the vehicle; the field intensity meter acquires field intensity information of a target position which is away from the position of a measured part by a set distance through a probe of the field intensity meter; the upper computer acquires field intensity information, determines a field intensity curve corresponding to a tested part in the whole vehicle radiation immunity test, and matches the field intensity information of a target position with the field intensity curve through closed-loop control on radiation immunity test equipment to obtain a test curve required by executing the part radiation immunity test; and when the tested part is positioned in the electromagnetic compatibility darkroom, the radiation immunity testing equipment performs part radiation immunity testing on the tested part based on the testing curve. The embodiment of the invention can use the test intensity of the whole vehicle test working condition in the part radiation immunity test stage, and can achieve the effect of previewing the whole vehicle radiation immunity test through the part radiation immunity test.
Description
Technical Field
The embodiment of the invention relates to a test technology, in particular to a method and a system for testing radiation immunity of automobile parts.
Background
At present, in the field of automobile electromagnetic compatibility testing, corresponding testing standards exist internationally and domestically aiming at the radiation immunity testing of the whole automobile and parts.
The self test standard released by the current whole automobile factory in China is consistent with the national standard or the radiation immunity field intensity is adjusted on the basis of the national standard. Such a test method covers all vehicle components as a whole, but lacks pertinence, and it is easy to occur that the radiation immunity field intensity of the vehicle components at some positions is excessive, and the radiation immunity field intensity of the vehicle components at other positions is insufficient.
Disclosure of Invention
The embodiment of the invention provides a method and a system for testing the radiation immunity of automobile parts, which can solve the problem that the radiation immunity field intensity is excessive or insufficient due to the existing testing mode.
In a first aspect, an embodiment of the present invention provides a method for testing radiation immunity of an automobile part, including:
the radiation immunity test equipment performs a whole vehicle radiation immunity test on the vehicle in the electromagnetic compatibility darkroom;
the method comprises the following steps that a field intensity meter acquires field intensity information of a target position which is away from a measured part position by a set distance through a field intensity meter probe, wherein the field intensity meter probe is arranged at the target position which is away from the measured part position by the set distance, and the shielding state of the field intensity meter probe is the same as that of the measured part;
the upper computer obtains the field intensity information, determines a field intensity curve corresponding to the tested part in the whole vehicle radiation immunity test, and matches the field intensity information of the target position with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required for executing the part radiation immunity test;
and when the tested part is positioned in the electromagnetic compatibility darkroom, the radiation immunity testing equipment carries out part radiation immunity testing on the tested part based on the testing curve.
Optionally, the field intensity meter acquires field intensity information of a target position away from the position of the measured component by a set distance through a field intensity meter probe, and the field intensity information includes:
the field intensity meter acquires field intensity information of the position of the measured part through the field intensity meter probe, wherein the field intensity meter probe replaces the measured part in the automobile, so that the field intensity meter probe is located at the position of the measured part.
Optionally, the field intensity meter acquires field intensity information of the position of the measured component through a field intensity meter probe, and the field intensity information includes:
the field intensity meter probe collects field intensity information of the position of the measured part in real time and outputs the field intensity information to the field intensity meter.
Optionally, the radiation immunity test device performs a whole vehicle radiation immunity test on an automobile in the electromagnetic compatibility darkroom, including:
and the radiation immunity test equipment executes the whole vehicle radiation immunity test according to the test parameters contained in the whole vehicle radiation immunity test standard.
Optionally, the upper computer obtains the field strength information, and determines a field strength curve corresponding to the tested component in the whole vehicle radiation immunity test, including:
and the upper computer records the field intensity information acquired by the field intensity meter in real time and draws a field intensity curve at a target position corresponding to the tested part in the whole vehicle radiation immunity test according to the field intensity information.
Optionally, the obtaining a test curve required for performing the radiation immunity test of the component by matching the field strength information of the target position with the field strength curve through closed-loop control of the radiation immunity test device includes:
the upper computer controls the radiation immunity test equipment to emit interference signals, acquires the investigation field intensity information of the target position acquired by the field intensity meter, and adjusts the field intensity value of the interference signals based on the investigation field intensity information until the investigation field intensity information is matched with the field intensity curve;
and generating a test curve required by the radiation immunity test of the part based on the strength value of the interference signal when the field strength information of the target position is matched with the field strength curve.
In a second aspect, the embodiment of the invention further provides a radiation immunity test system for automobile parts, which comprises an upper computer, a radiation immunity test device and a field intensity meter, wherein the upper computer is respectively in communication connection with the radiation immunity test device and the field intensity meter;
the field intensity meter is used for acquiring field intensity information of a target position which is away from the position of a tested part by a set distance through a field intensity meter probe in the process of executing the radiation immunity test of the whole vehicle by the radiation immunity test equipment, and outputting the field intensity information to the upper computer, wherein the field intensity meter probe is arranged at the target position which is away from the position of the tested part by the set distance, and the shielding state of the field intensity meter probe is the same as that of the tested part;
the upper computer is used for acquiring the field intensity information, determining a field intensity curve corresponding to the tested part in the whole vehicle radiation immunity test, and matching the field intensity information of the target position with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required by executing the part radiation immunity test;
and the radiation immunity test equipment is used for executing the whole vehicle radiation immunity test when the vehicle is positioned in the electromagnetic compatibility darkroom, and performing the part radiation immunity test on the tested part based on the test curve when the tested part is positioned in the electromagnetic compatibility darkroom.
Optionally, the target position is a mounting position of the measured part in the whole vehicle.
Optionally, the field intensity meter probe is connected to the field intensity meter outside the electromagnetic compatibility darkroom through an optical fiber.
Optionally, the upper computer is specifically configured to:
controlling the radiation immunity test equipment to emit interference signals, acquiring the field intensity investigation information of the target position acquired by the field intensity meter, and adjusting the field intensity value of the interference signals based on the field intensity investigation information until the field intensity investigation information is matched with the field intensity curve;
and generating a test curve required by the radiation immunity test of the part based on the strength value of the interference signal when the field strength information of the target position is matched with the field strength curve.
The invention provides a method and a system for testing the radiation immunity of automobile parts.A field intensity instrument probe is used for acquiring the field intensity information of a target position in the radiation immunity test of the whole automobile, the field intensity instrument probe is arranged at the target position which is away from the position of a tested part by a set distance, and the shielding state of the field intensity instrument probe is the same as that of the tested part; the field intensity meter acquires field intensity information acquired by a probe of the field intensity meter in real time, the field intensity information is output to the upper computer, the upper computer determines a field intensity curve corresponding to a tested part in the whole vehicle radiation immunity test according to the field intensity information, and the field intensity information of a target position is matched with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required by executing the radiation immunity test of the part; the radiation immunity test equipment adopts the test curve to carry out the radiation immunity test of the parts to be tested. According to the embodiment of the invention, the actual field intensity curves of different part assembly points in the whole vehicle radiation immunity test are collected, and the part immunity test curves used in the part radiation immunity test are revised based on the actual field intensity curves, so that the effect of using the test intensity of the whole vehicle test working condition in the part radiation immunity test stage is realized, the effect of previewing the whole vehicle radiation immunity test through the part radiation immunity test can be achieved, the risk can be avoided in advance, the whole vehicle radiation immunity test can be ensured to be passed, and the problem of excessive or insufficient radiation immunity field intensity caused by the conventional test mode can be solved.
Drawings
Fig. 1 is a flowchart of a method for testing radiation immunity of an automobile part according to an embodiment of the present invention;
FIG. 2 is a flowchart of another method for testing radiation immunity of automobile parts according to an embodiment of the present invention;
fig. 3 is a block diagram of a radiation immunity testing system for generating a test curve according to an embodiment of the present invention;
fig. 4 is a block diagram of a radiation immunity testing system for automobile parts according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that the own test standard issued by the current whole-automobile factory in China is either consistent with the national standard or the radiation immunity field intensity is adjusted on the basis of the national standard. Such a test method covers all vehicle components as a whole, but lacks pertinence. Examples are: in the radiation immunity test standard of a certain whole vehicle factory for electrical parts, the radiation immunity field intensity is required to be full-band 100V/m, for two different parts (A: an instrument and B: a vehicle speed sensor) assembled on a vehicle, the AB assembly positions are different on the whole vehicle, and the shielding ranges of the parts by a vehicle body and a vehicle frame are different, so that the actual field intensities at the AB positions are different in the whole vehicle radiation immunity test, 100V/m field intensity is sufficient for A with larger field intensity, but 100V/m field intensity is excessive for B, and the cost is improved. Conversely, if 100V/m is sufficient for B, then it is an inadequate validation condition for A.
In order to solve the above problems, embodiments of the present invention provide a radiation immunity test scheme for an automobile part, which can use the test intensity of a finished automobile test condition at a radiation immunity test stage of the part, achieve an effect of performing a radiation immunity test of the finished automobile through the radiation immunity test of the part, and avoid risks in advance.
Fig. 1 is a flowchart of a method for testing radiation immunity of an automobile part according to an embodiment of the present invention, where the method may be executed by a system for testing radiation immunity of an automobile part, where the system includes an upper computer, a radiation immunity testing device, a field intensity meter, and the like, and the upper computer is in communication connection with the radiation immunity testing device and the field intensity meter, respectively. As shown in fig. 1, the method comprises the steps of:
and 110, performing a whole-vehicle radiation immunity test on the vehicle in the electromagnetic compatibility darkroom by using the radiation immunity test equipment.
Specifically, the electromagnetic compatible darkroom is also called a semi-anechoic chamber, abbreviated as EMC darkroom, and is formed by mounting electromagnetic wave absorbing materials on the four walls of the inner wall and the ceiling on the basis of an electromagnetic shielding chamber, and the ground is an ideal reflecting surface. Thereby simulating open field test conditions. The EMC darkroom structure generally comprises RF shielding room, absorbing material, power, test antenna, electromagnetic compatibility laboratory table and camera etc. several parts: the RF shielding chamber ensures that the test is not interfered by the outside; the absorption property of the darkroom is ensured by the absorption material; the test antenna and the electromagnetic compatibility experiment table ensure that the tested object is tested according to the state and conditions of the standard requirement; the monitoring test of the camera is normally carried out, and the power supply system ensures the test power consumption. Auxiliary equipment such as an RF (radio frequency) shielding door, a ventilation waveguide window, a camera, an illuminating lamp and a power box is designed to be placed outside the main reflecting area as far as possible, so that any metal part is prevented from being exposed in the main reflecting area. The floor of the darkroom is the only reflecting surface for electromagnetic waves. The requirements for the floor are: continuous, flat and free of unevenness. There should not be a gap beyond the minimum operating wavelength 1/10 to maintain the conductive continuity of the floor. The ground wire and the power wire in the darkroom are arranged close to the wall foot and do not cross the darkroom, the wire also needs to penetrate through the metal tube, and the metal tube is kept to be well lapped with the floor. In order to avoid that the reflection of the electric wave influences the measurement error, people and test control equipment should not be in the test field. Therefore, the general EMC darkroom is composed of a test darkroom and a control room, a test antenna and tested equipment are arranged in the test darkroom, and an operator and a test control instrument are arranged in the control room.
Specifically, the radiation immunity test device is a device for executing a whole vehicle radiation immunity test or a part radiation immunity test in an automobile part radiation immunity test system. For example, the radiation immunity test equipment comprises a signal source, a power amplifier, a test antenna and the like. The signal source responds to an instruction of the upper computer, generates an interference signal, outputs the interference signal to the power amplifier, amplifies the interference signal through the power amplifier, and transmits the amplified interference signal to an automobile or a tested part in the electromagnetic compatibility darkroom through the test antenna.
The whole vehicle radiation immunity test is a test executed by the radiation immunity test equipment based on the whole vehicle radiation immunity test standard, and the test parameters are executed according to the whole vehicle radiation immunity test standard.
Illustratively, after the field intensity meter probe is arranged at a target position which is a set distance away from the position of the tested part, the radiation immunity testing equipment performs the whole-vehicle radiation immunity test on the automobile in the electromagnetic compatibility dark room according to the testing parameters contained in the whole-vehicle radiation immunity test standard.
And 120, acquiring field intensity information of a target position which is away from the position of the measured part by a set distance through a probe of the field intensity meter by the field intensity meter.
The field intensity meter probe is arranged at a target position which is away from the position of the measured part by a set distance, and the shielding state of the field intensity meter probe is the same as that of the measured part. The target position may be a mounting position of the component to be measured, or may be another position having a predetermined distance from the mounting position. Specifically, the component to be tested is an automobile component. The tester sets a field intensity meter probe near or at the installation position of the tested part in advance based on the installation position of the tested part on the automobile. For example, the field intensity meter probe is arranged at the installation position of the part to be measured on the automobile. Or the field intensity meter probe is arranged at other positions which are away from the installation position of the measured part on the automobile by a set distance. It should be noted that, after the field intensity meter probe is required to be installed, the shielding state of the field intensity meter probe is the same as the shielding state of the tested part in the automobile.
The set distance may be a value specified manually. When the target position is another position away from the installation position by a set distance, the target position may be a position away from the center of the installation position of the measured component by the set distance, or a position away from the edge of the installation position of the measured component by the set distance, and the target position needs to satisfy the requirement that the shielding state of the field intensity meter probe after installation is the same as the shielding state of the measured component at the position in the automobile.
Illustratively, the field intensity meter acquires field intensity information of the position of the measured part through a field intensity meter probe, wherein the field intensity meter probe replaces the measured part in the automobile so that the field intensity meter probe is at the position of the measured part. The field intensity meter probe collects the field intensity information of the position of the measured part in real time and outputs the field intensity information to the field intensity meter. For example, the field intensity meter probe is arranged at the installation position of the tested part, and in the process of testing the radiation immunity of the whole vehicle, the field intensity information of the installation position of the tested part is acquired in real time through the field intensity meter probe and is output to the field intensity meter.
Optionally, the field intensity meter probe can be arranged at a target position which is the same as the shielding state of the part to be measured on the automobile and is a set distance away from the installation position of the part to be measured. In the whole vehicle radiation immunity test process, the field intensity information near the installation position of the tested part is collected in real time through the field intensity meter probe, and the field intensity information is output to the field intensity meter. For example, the magnetometer probe is arranged at a target position which is the same as the shielding state of the measured part on the automobile and is 10cm away from the installation position of the measured part. When a target position that is the same as the shielded state of the component to be measured and is a predetermined distance away from the mounting position of the component to be measured is selected on the automobile, the target position does not affect other components on the automobile.
And step 130, the upper computer acquires the field intensity information, determines a field intensity curve corresponding to the tested part in the whole vehicle radiation immunity test, and matches the field intensity information of the target position with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required for executing the part radiation immunity test.
The field intensity curve is a curve for recording the variation relation of the radiation immunity field intensity corresponding to each tested part along with the frequency.
Illustratively, the upper computer records field intensity information acquired by the field intensity meter in real time, and draws a field intensity curve at a target position corresponding to the detected part in the whole vehicle radiation immunity test according to the field intensity information. Specifically, the field intensity meter probe is connected with the field intensity meter through an optical fiber, the field intensity meter probe is arranged at the installation position of a tested part on the automobile or at a position away from the installation position by a set distance, in the radiation immunity test of the whole automobile, the automobile is positioned in the electromagnetic compatibility darkroom, and the field intensity meter is positioned outside the electromagnetic compatibility darkroom. The field intensity information of a target position which is away from the position of the measured part by a set distance is acquired by the field intensity instrument probe, and the field intensity information is output to the field intensity instrument through the optical fiber. The field intensity meter sends field intensity information transmitted by a probe of the field intensity meter to the upper computer in real time, and the upper computer draws a field intensity curve at a target position corresponding to a detected part in the radiation immunity test of the whole vehicle according to the field intensity information. The field intensity meter is connected with the upper computer through a signal line.
Illustratively, a field intensity meter probe is fixed on an electromagnetic compatibility laboratory table in an electromagnetic compatibility darkroom, and the position of the field intensity meter probe is the same as that of the part to be measured in the automobile or is a set distance away from the part to be measured (namely the target position). And calibrating a test curve required by the radiation immunity test of the part by adopting a field intensity curve at the position of the part to be tested in the radiation immunity test of the whole vehicle. Specifically, the upper computer controls the radiation immunity test equipment to emit an interference signal, acquires investigation field strength information of the target position acquired by the field intensity meter, and adjusts a field strength value of the interference signal based on the investigation field strength information until the investigation field strength information is matched with the field strength curve; and generating a test curve required by the radiation immunity test of the part based on the strength value of the interference signal when the field strength information of the target position is matched with the field strength curve. For example, the field intensity value at the position of the tested part is 10V/m according to the field intensity curve, the upper computer controls the radiation immunity testing equipment to emit interference signals, and the field intensity value at the position of the probe of the field intensity meter collected by the field intensity meter is 9V/m. The field intensity meter feeds back the field intensity value to the upper computer. After the upper computer receives the field intensity value, the upper computer adjusts the test parameters to control the radiation immunity test equipment to increase the field intensity value of the interference signal. The upper computer collects the field intensity value of the probe of the field intensity meter again through the field intensity meter, and if the field intensity value reaches 10V/m, the test parameters are stabilized at the current parameter values; if the field strength value is not 10V/m, the above process is repeated until the field strength value at the probe of the field strength meter reaches 10V/m. .
And 140, when the tested part is positioned in the electromagnetic compatibility darkroom, the radiation immunity test equipment performs a part radiation immunity test on the tested part based on the test curve.
The radiation immunity test of the parts is carried out on the parts to be tested through the radiation immunity test equipment based on the test curve. Exemplarily, the tested part is fixed on an electromagnetic compatibility experiment table in an electromagnetic compatibility darkroom, the radiation immunity test equipment controls the test antenna to emit radiation interference based on the test curve generated by the steps, so that the part radiation immunity test is performed on the tested part, and the real reflection of the tested part in the finished automobile test is obtained through the part radiation immunity test.
According to the technical scheme of the embodiment, field intensity information of a target position in the whole vehicle radiation immunity test is acquired through a field intensity meter probe, the field intensity meter probe is arranged at the target position which is away from the position of a tested part by a set distance, and the shielding state of the field intensity meter probe is the same as that of the tested part; the field intensity meter acquires field intensity information acquired by a probe of the field intensity meter in real time, the field intensity information is output to the upper computer, the upper computer determines a field intensity curve corresponding to a tested part in the whole vehicle radiation immunity test according to the field intensity information, and the field intensity information of a target position is matched with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required by executing the radiation immunity test of the part; the radiation immunity test equipment adopts the test curve to carry out the radiation immunity test of the parts to be tested. According to the embodiment of the invention, the actual field intensity curves of different part assembly points in the whole vehicle radiation immunity test are collected, and the part immunity test curves used in the part radiation immunity test are revised based on the actual field intensity curves, so that the effect of using the test intensity of the whole vehicle test working condition in the part radiation immunity test stage is realized, the effect of previewing the whole vehicle radiation immunity test through the part radiation immunity test can be achieved, the risk can be avoided in advance, the whole vehicle radiation immunity test can be ensured to be passed, and the problem of excessive or insufficient radiation immunity field intensity caused by the conventional test mode can be solved.
Fig. 2 is a flowchart of another method for testing radiation immunity of automobile parts according to an embodiment of the present invention. As shown in fig. 2, the method includes:
It should be noted that the field intensity meter probe is used to replace the measured part in the automobile in advance, that is, the field intensity meter probe is arranged at the installation position of the measured part. When the whole automobile radiation immunity test process of the automobile is carried out, the field intensity meter acquires actual field intensity information of the installed position in real time through the field intensity meter probe. The field intensity meter outputs the field intensity information to the upper computer.
Illustratively, the installation position of the part to be tested on the automobile is determined, and the field intensity meter probe is fixed at the same position of the part to be tested. The field intensity information of the same position of the tested part is collected in real time through the probe of the field intensity meter, and the field intensity information can be transmitted to the field intensity meter outside the electromagnetic compatibility darkroom through the optical fiber. And carrying out the whole vehicle radiation immunity test on the vehicle adopting the field intensity meter probe to replace the tested part, executing the test parameters according to the whole vehicle radiation immunity test standard, and recording the field intensity information collected by the field intensity meter probe in real time through the field intensity meter. The field intensity meter outputs the field intensity information to the upper computer.
And 220, acquiring the field intensity information by the upper computer, determining a field intensity curve corresponding to the tested part in the whole vehicle radiation immunity test, and matching the field intensity information of the target position with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required for executing the part radiation immunity test.
Illustratively, in the process of the radiation immunity test of the whole vehicle, the upper computer acquires field intensity information output by the field intensity meter in real time, and draws a field intensity curve corresponding to the tested part in the radiation immunity test of the whole vehicle based on the field intensity information.
Fig. 3 is a block diagram of a radiation immunity test system for generating a test curve according to an embodiment of the present invention. As shown in fig. 3, a field intensity meter probe 350 is fixed on an electromagnetic compatibility laboratory table 340 in an electromagnetic compatibility darkroom, and the position of the field intensity meter probe 350 is the same as the position of a part to be tested in a complete vehicle radiation anti-interference test in a vehicle, or is a set distance away from the part to be tested in the vehicle. The upper computer 320 outputs a control command to the anti-radiation interference test device 330 to transmit an interference signal through the anti-radiation interference test device 330. The field intensity meter 310 collects the field intensity information to be investigated through the field intensity meter probe 350, and outputs the field intensity information to be investigated to the upper computer 320. The upper computer 320 matches the acquired field intensity information to the field intensity curve corresponding to the tested part. And if the field intensity information is matched with the field intensity curve, generating a test curve required by executing the radiation immunity test of the part according to the test parameter corresponding to the current control instruction. If the field intensity information is not matched with the field intensity curve, the test parameters in the control instruction are adjusted to control the radiated immunity test equipment 330 to adjust the field intensity value of the transmitted interference signal until the field intensity information is matched with the field intensity curve.
And step 230, the radiation immunity test equipment uses the test curve to perform the radiation immunity test of the parts.
Illustratively, the tested part is fixed on an electromagnetic compatibility test table in an electromagnetic compatibility darkroom, the test antenna is controlled to emit electromagnetic interference according to the radiation immunity field intensity indicated by the test curve, and the condition that the tested part is influenced by the radiation immunity field is monitored. If the tested part is an automobile instrument, the image information of the tested automobile instrument can be shot through the camera, and therefore whether the pointer of the tested automobile instrument shakes or not is judged by observing the image information. The embodiment of the invention can realize the effect of the measured part on the real reflection in the whole vehicle test according to the influence of the radiation immunity magnetic field on the measured part in the radiation immunity test of the measured part.
According to the technical scheme of the embodiment of the invention, the actual test field intensity curves of different parts and components in the finished automobile test are collected, and the actual test field intensity curves are adopted to revise the field intensity values of the interference signals of the test antenna in the part radiation immunity test, so that the test intensity of the test working condition of the whole automobile radiation immunity test is simulated in the part radiation immunity test stage, the effect of previewing the finished automobile test is achieved, and the risk that the finished automobile test cannot pass is avoided in advance.
Fig. 4 is a block diagram of a radiation immunity testing system for automobile parts according to an embodiment of the present invention. The test system can execute the method for testing the radiation immunity of the automobile parts, and the effect of previewing the whole automobile radiation immunity test through the part radiation immunity test is realized by executing the test mode. As shown in fig. 4, the radiation immunity testing system for the automobile parts comprises: the device comprises an upper computer 420, radiation immunity testing equipment 430 and a field intensity meter 410, wherein the upper computer 420 is in communication connection with the radiation immunity testing equipment 430 and the field intensity meter 410 respectively;
the field intensity meter 410 is configured to, in a process that the radiation immunity test equipment 430 performs a complete vehicle radiation immunity test, acquire field intensity information of a target position away from a position of a measured part by a set distance through a field intensity meter probe 450, and output the field intensity information to the upper computer 420, where the field intensity meter probe 450 is disposed at the target position away from the position of the measured part by the set distance, and a shielding state of the field intensity meter probe 450 is the same as a shielding state of the measured part;
the upper computer 420 is configured to obtain the field strength information, determine a field strength curve corresponding to the component to be tested in the entire car radiation immunity test, and match the field strength information of the target position with the field strength curve through closed-loop control on the radiation immunity test equipment 430 to obtain a test curve required for executing the component radiation immunity test;
and the radiation immunity test equipment 430 is used for executing the whole vehicle radiation immunity test when the vehicle 440 is positioned in the electromagnetic compatibility darkroom, and performing the part radiation immunity test on the part to be tested based on the test curve when the part to be tested is positioned in the electromagnetic compatibility darkroom.
Optionally, the target position is a mounting position of the measured part in the whole vehicle. Alternatively, the target position may be other positions at a set distance from the mounting position. When the target position is other positions away from the installation position by a set distance, the shielding state of the field intensity meter probe is the same as that of the measured part after the field intensity meter probe is required to be installed at the target position.
Optionally, the field intensity meter probe is connected to the field intensity meter outside the electromagnetic compatibility darkroom through an optical fiber.
Optionally, the upper machine tool is used for:
controlling the radiation immunity test equipment to emit interference signals, acquiring the field intensity investigation information of the target position acquired by the field intensity meter, and adjusting the field intensity value of the interference signals based on the field intensity investigation information until the field intensity investigation information is matched with the field intensity curve;
and generating a test curve required by the radiation immunity test of the part based on the strength value of the interference signal when the field strength information of the target position is matched with the field strength curve.
The embodiment provides a radiation immunity test system for automobile parts, which acquires field intensity information of a target position in a radiation immunity test of a whole automobile through a field intensity meter probe, wherein the field intensity meter probe is arranged at the target position which is away from the position of a part to be tested by a set distance, and the shielding state of the field intensity meter probe is the same as that of the part to be tested; the field intensity meter acquires field intensity information acquired by a probe of the field intensity meter in real time, the field intensity information is output to the upper computer, the upper computer determines a field intensity curve corresponding to a tested part in the whole vehicle radiation immunity test according to the field intensity information, and the field intensity information of a target position is matched with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required by executing the radiation immunity test of the part; the radiation immunity test equipment adopts the test curve to carry out the radiation immunity test of the parts to be tested. According to the embodiment of the invention, the actual field intensity curves of different part assembly points in the whole vehicle radiation immunity test are collected, and the part immunity test curves used in the part radiation immunity test are revised based on the actual field intensity curves, so that the effect of using the test intensity of the whole vehicle test working condition in the part radiation immunity test stage is realized, the effect of previewing the whole vehicle radiation immunity test through the part radiation immunity test can be achieved, the risk can be avoided in advance, the whole vehicle radiation immunity test can be ensured to be passed, and the problem of excessive or insufficient radiation immunity field intensity caused by the conventional test mode can be solved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for testing radiation immunity of automobile parts is characterized by comprising the following steps:
the radiation immunity test equipment performs a whole vehicle radiation immunity test on the vehicle in the electromagnetic compatibility darkroom;
the method comprises the following steps that a field intensity meter acquires field intensity information of a target position which is away from a measured part position by a set distance through a field intensity meter probe, wherein the field intensity meter probe is arranged at the target position which is away from the measured part position by the set distance, and the shielding state of the field intensity meter probe is the same as that of the measured part;
the upper computer obtains the field intensity information, determines a field intensity curve corresponding to the tested part in the whole vehicle radiation immunity test, and matches the field intensity information of the target position with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required for executing the part radiation immunity test;
and when the tested part is positioned in the electromagnetic compatibility darkroom, the radiation immunity testing equipment carries out part radiation immunity testing on the tested part based on the testing curve.
2. The method for testing the radiation immunity of the automobile parts according to claim 1, wherein the field intensity meter acquires the field intensity information of the target position away from the position of the tested part by a set distance through a probe of the field intensity meter, and the method comprises the following steps:
the field intensity meter acquires field intensity information of the position of the measured part through the field intensity meter probe, wherein the field intensity meter probe replaces the measured part in the automobile, so that the field intensity meter probe is located at the position of the measured part.
3. The method for testing the radiation immunity of the automobile parts according to claim 2, wherein the field intensity meter acquires the field intensity information of the position of the tested parts through a probe of the field intensity meter, and the method comprises the following steps:
the field intensity meter probe collects field intensity information of the position of the measured part in real time and outputs the field intensity information to the field intensity meter.
4. The method for testing radiation immunity of automobile parts according to claim 1, wherein the radiation immunity testing device performs a whole automobile radiation immunity test on an automobile in an electromagnetic compatibility darkroom, and comprises:
and the radiation immunity test equipment executes the whole vehicle radiation immunity test according to the test parameters contained in the whole vehicle radiation immunity test standard.
5. The method for testing the radiation immunity of the automobile parts according to claim 1, wherein the upper computer acquires the field intensity information and determines a field intensity curve corresponding to the tested parts in the whole automobile radiation immunity test, and the method comprises the following steps:
and the upper computer records the field intensity information acquired by the field intensity meter in real time and draws a field intensity curve at a target position corresponding to the tested part in the whole vehicle radiation immunity test according to the field intensity information.
6. The method for testing radiation immunity of automobile parts according to claim 1, wherein the step of matching the field strength information of the target position with the field strength curve by the closed-loop control of the radiation immunity test equipment to obtain a test curve required for executing the radiation immunity test of the parts comprises the steps of:
the upper computer controls the radiation immunity test equipment to emit interference signals, acquires the investigation field intensity information of the target position acquired by the field intensity meter, and adjusts the field intensity value of the interference signals based on the investigation field intensity information until the investigation field intensity information is matched with the field intensity curve;
and generating a test curve required by the radiation immunity test of the part based on the strength value of the interference signal when the field strength information of the target position is matched with the field strength curve.
7. The radiation immunity test system for the automobile parts is characterized by comprising an upper computer, radiation immunity test equipment and a field intensity meter, wherein the upper computer is respectively in communication connection with the radiation immunity test equipment and the field intensity meter;
the field intensity meter is used for acquiring field intensity information of a target position which is away from the position of a tested part by a set distance through a field intensity meter probe in the process of executing the radiation immunity test of the whole vehicle by the radiation immunity test equipment, and outputting the field intensity information to the upper computer, wherein the field intensity meter probe is arranged at the target position which is away from the position of the tested part by the set distance, and the shielding state of the field intensity meter probe is the same as that of the tested part;
the upper computer is used for acquiring the field intensity information, determining a field intensity curve corresponding to the tested part in the whole vehicle radiation immunity test, and matching the field intensity information of the target position with the field intensity curve through closed-loop control on the radiation immunity test equipment to obtain a test curve required by executing the part radiation immunity test;
and the radiation immunity test equipment is used for executing the whole vehicle radiation immunity test when the vehicle is positioned in the electromagnetic compatibility darkroom, and performing the part radiation immunity test on the tested part based on the test curve when the tested part is positioned in the electromagnetic compatibility darkroom.
8. The automobile part radiation immunity test system of claim 7, wherein the target position is a mounting position of the tested part in the whole automobile.
9. The system for testing radiation immunity of automobile parts according to claim 7, wherein said field intensity meter probe is connected to said field intensity meter outside of the electromagnetic compatibility dark room through an optical fiber.
10. The automobile part radiation immunity test system of claim 7, wherein the upper computer is specifically configured to:
controlling the radiation immunity test equipment to emit interference signals, acquiring the field intensity investigation information of the target position acquired by the field intensity meter, and adjusting the field intensity value of the interference signals based on the field intensity investigation information until the field intensity investigation information is matched with the field intensity curve;
and generating a test curve required by the radiation immunity test of the part based on the strength value of the interference signal when the field strength information of the target position is matched with the field strength curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413346.6A CN112684269B (en) | 2020-12-03 | 2020-12-03 | Method and system for testing radiation immunity of automobile parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413346.6A CN112684269B (en) | 2020-12-03 | 2020-12-03 | Method and system for testing radiation immunity of automobile parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112684269A true CN112684269A (en) | 2021-04-20 |
| CN112684269B CN112684269B (en) | 2024-02-23 |
Family
ID=75445984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011413346.6A Active CN112684269B (en) | 2020-12-03 | 2020-12-03 | Method and system for testing radiation immunity of automobile parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112684269B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4326116C1 (en) * | 1993-08-04 | 1995-01-12 | Paul Prof Dr Ing Weis | Testing station for electromagnetic compatibility |
| CN201508393U (en) * | 2009-09-29 | 2010-06-16 | 上海机动车检测中心 | Electromagnetism compatibility test platform for main components of electric automobile |
| CN102707170A (en) * | 2012-05-25 | 2012-10-03 | 北京航空航天大学 | Method for testing electro-magnetic compatibility of automotive CAN (controller area network) buses based on semi-physical simulation |
| CN207557069U (en) * | 2017-11-20 | 2018-06-29 | 上海天祥质量技术服务有限公司 | A kind of auto parts and components radiation test device |
| CN111159858A (en) * | 2019-12-12 | 2020-05-15 | 中国汽车工程研究院股份有限公司 | Complete vehicle anti-interference analysis method and system |
-
2020
- 2020-12-03 CN CN202011413346.6A patent/CN112684269B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4326116C1 (en) * | 1993-08-04 | 1995-01-12 | Paul Prof Dr Ing Weis | Testing station for electromagnetic compatibility |
| CN201508393U (en) * | 2009-09-29 | 2010-06-16 | 上海机动车检测中心 | Electromagnetism compatibility test platform for main components of electric automobile |
| CN102707170A (en) * | 2012-05-25 | 2012-10-03 | 北京航空航天大学 | Method for testing electro-magnetic compatibility of automotive CAN (controller area network) buses based on semi-physical simulation |
| CN207557069U (en) * | 2017-11-20 | 2018-06-29 | 上海天祥质量技术服务有限公司 | A kind of auto parts and components radiation test device |
| CN111159858A (en) * | 2019-12-12 | 2020-05-15 | 中国汽车工程研究院股份有限公司 | Complete vehicle anti-interference analysis method and system |
Non-Patent Citations (2)
| Title |
|---|
| 吴琼;邓俊泳;: "汽车零部件的雷达波抗扰度测试", 安全与电磁兼容, no. 05, pages 37 - 38 * |
| 夏欢 等: "GB/T 18655-2010 对于汽车零部件辐射发射试验的研究", 自动化与仪器仪表, no. 4, pages 33 - 34 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112684269B (en) | 2024-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6144341A (en) | Electromagnetic emission location and measurement apparatus and method | |
| CN104849592B (en) | A kind of radio telescope wideband electromagnetic shield effectiveness detection system and detection method | |
| CN109116182A (en) | The device and method of communication cable-end shielding case shield effectiveness measurement | |
| CN109412715B (en) | System and method for testing electromagnetic interference of quantization index of airborne communication radio frequency receiving equipment | |
| CN110601773B (en) | Radiation stray test method and device and test system | |
| CN109991480B (en) | Detection device and method of M-Bus signal instrument under intentional radiation interference | |
| JP2001305168A (en) | Instrument, method, and recording medium for electromagnetic wave noise measurement | |
| KR20120101873A (en) | Prediction apparatus and method for electromagnetic radiated emission of cable | |
| US11506699B2 (en) | EMC test system and EMC test method using LiFi | |
| CN109164405A (en) | A kind of highpowerpulse Field strength calibration system and method | |
| US8212572B2 (en) | Electromagnetic compatibility multi-carrier immunity testing system and method | |
| CN218240424U (en) | Anti-interference testing device | |
| CN108008279A (en) | A kind of circuit radio noise test system, method and device | |
| CN112684269A (en) | Method and system for testing radiation immunity of automobile parts | |
| JPH11281698A (en) | Method for adjusting setting of device to be tested and method for adjusting the same | |
| CN112415320A (en) | Radiation anti-interference degree testing system and method based on automobile instrument | |
| CN115032465A (en) | Radiation stray determination method, device and system | |
| WO2016003006A1 (en) | Signal supply system for improving uncertainty during measurement of specific absorption rate | |
| JP6867002B2 (en) | EMC test timing generation system | |
| Lunca et al. | Automated measurement and monitoring of the electromagnetic fields from gsm systems | |
| CN109613342B (en) | Carrier rocket electromagnetic radiation emission distributed measurement method | |
| CN112540326A (en) | Measuring system for vehicle magnetic field frequency domain data | |
| JPS5919874A (en) | Testing device of radiation interference sensitivity | |
| KR20160069730A (en) | Electromagnetic measurement system and integral-control computer program for the same | |
| CN113109634B (en) | Antenna test method, device, terminal equipment, antenna test system and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |