Magnetic field environment simulation system

Abstract

The utility model discloses a magnetic field environment simulation system, which comprises a signal source simulator, a real vehicle load wire harness, a simulation load device, a magnetic field acquisition device and a magnetic field data processing device, and is characterized in that the signal source simulator is connected with the simulation load device through the real vehicle load wire harness to form a communication signal channel for simulating real vehicle working conditions and electromagnetic environments; the magnetic field acquisition device acquires first magnetic field data when the original communication signal of the vehicle is transmitted and second magnetic field data when the original communication signal of the vehicle and the newly-added communication signal of the vehicle are simultaneously transmitted on the load wire harness, and the magnetic field data processing device outputs a magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator. According to the utility model, the communication signal channel of the real vehicle working condition and the electromagnetic environment is simulated, and the magnetic field data is acquired in the communication signal channel to determine whether the magnetic field intensity is increased or not, thereby providing a reference basis for the subsequent intelligent configuration of the vehicle, and improving the EMC anti-interference performance of the electronic and electrical parts of the whole vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental simulation, and more specifically to a magnetic field environment simulation system. Background Art

[0002] With the continuous improvement of vehicle intelligence configuration, the layout of electronic and electrical components of the whole vehicle has become highly concentrated, and high-speed chips are widely used. However, when the transmission paths of high-speed and same-frequency signals overlap, it is easy to increase the magnetic field strength, so that magnetic sensitive components may fail due to changes in the surrounding magnetic field, thus making the whole vehicle function unable to be realized.

[0003] Therefore, how to improve the EMC (Electromagnetic Compatibility) anti-interference performance of electronic and electrical components of a vehicle has become a technical problem that technical personnel in this field need to solve urgently. Utility Model Content

[0004] In view of this, the utility model discloses a magnetic field environment simulation system to improve the EMC anti-interference performance of electronic and electrical components of a whole vehicle.

[0005] A magnetic field environment simulation system, comprising:

[0006] A signal source simulator, used to output the original vehicle communication signal and the vehicle's newly added communication signal;

[0007] A simulated load device is used to connect corresponding loads according to the parameters of the actual vehicle electrical components;

[0008] A real vehicle load harness, having different load harnesses, the real vehicle load harnesses are respectively connected to the signal source simulator and the simulated load device to form a communication signal path simulating the working condition and electromagnetic environment of the real vehicle;

[0009] A magnetic field acquisition device, used for acquiring first magnetic field data when the load harness transmits the original communication signal of the vehicle and second magnetic field data when the load harness transmits the original communication signal of the vehicle and the newly added communication signal of the vehicle at the same time;

[0010] A magnetic field data processing device having a signal acquisition port and a signal output port;

[0011] The signal acquisition port is used to acquire the first magnetic field data and the second magnetic field data output by the magnetic field acquisition device;

[0012] The signal output port is used to output the magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator.

[0013] Optionally, the signal source simulator comprises:

[0014] An operating element, used to set a first signal parameter corresponding to the original communication signal of the vehicle and a second signal parameter corresponding to the newly added communication signal of the vehicle;

[0015] A signal generator is used to output the original vehicle communication signal corresponding to the first signal parameter output by the operating element, and to output the newly added vehicle communication signal corresponding to the second signal parameter output by the operating element.

[0016] Optionally, the operating element has a display screen;

[0017] The magnetic field data processing device is connected to the operating element via the signal output port;

[0018] The signal output port is used to output the magnetic field superposition result to the display screen for display.

[0019] Optionally, the signal source simulator further comprises: an alarm;

[0020] The alarm is connected to the operating element and is used for giving an alarm according to the alarm signal output by the operating element.

[0021] Optionally, the alarm is one of a light alarm, a sound alarm and a sound-light alarm.

[0022] Optionally, the signal source simulator further comprises: a display;

[0023] The magnetic field data processing device is connected to the display via the signal output port;

[0024] The signal output port is used to output the magnetic field superposition result to the display for display.

[0025] Optionally, the simulated load device comprises: a load connection panel;

[0026] The load connection panel is used to connect the corresponding load.

[0027] Optionally, the magnetic field acquisition device comprises:

[0028] A magnetic field probe, used for collecting the first magnetic field data and the second magnetic field data;

[0029] The magnetic field receiving element is used to output the first magnetic field data and the second magnetic field data to the magnetic field data processing device.

[0030] Optionally, the magnetic field probe supports the collection of magnetic field data at different points and distances of the load harness.

[0031] Optionally, different load harnesses correspond to different harness types, harness lengths, and harness colinearity conditions.

[0032] From the above technical scheme, it can be known that the utility model discloses a magnetic field environment simulation system, including a signal source simulator, a real vehicle load harness, a simulated load device, a magnetic field acquisition device and a magnetic field data processing device. The signal source simulator is connected to the simulated load device through the real vehicle load harness to form a communication signal path that simulates the working condition and electromagnetic environment of the real vehicle. The signal source simulator outputs the original communication signal of the vehicle and the newly added communication signal of the vehicle on the communication signal path. The magnetic field acquisition device collects the first magnetic field data when the original communication signal of the vehicle is transmitted on the load harness and the second magnetic field data when the original communication signal of the vehicle and the newly added communication signal of the vehicle are simultaneously transmitted on the load harness, and outputs them to the magnetic field data processing device. The magnetic field data processing device outputs the magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator. The utility model can determine whether the original communication signal of the vehicle and the newly added communication signal of the vehicle cause an increase in magnetic field strength when the overlapping path is transmitted by simulating the communication signal path of the real vehicle working condition and electromagnetic environment, and collecting the magnetic field data when the original communication signal of the vehicle and the newly added communication signal of the vehicle are transmitted on the communication signal path, so as to provide a reference basis for the subsequent intelligent configuration of the vehicle, thereby improving the EMC anti-interference performance of the electronic and electrical components of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a magnetic field environment simulation system disclosed in an embodiment of the utility model;

[0035] Figure 2 A schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model;

[0036] Figure 3 A schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model;

[0037] Figure 4 A schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model;

[0038] Figure 5 A schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model;

[0039] Figure 6 A schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model;

[0040] Figure 7 A schematic diagram of collecting magnetic field data with a communication frequency of 200 Hz disclosed in an embodiment of the utility model;

[0041] Figure 8 This is a schematic diagram of collecting magnetic field data with a communication frequency of 150 Hz disclosed in an embodiment of the utility model. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] The embodiment of the utility model discloses a magnetic field environment simulation system, including a signal source simulator, a real vehicle load harness, a simulated load device, a magnetic field acquisition device and a magnetic field data processing device. The signal source simulator is connected to the simulated load device through the real vehicle load harness to form a communication signal path that simulates the working condition of the real vehicle and the electromagnetic environment. The signal source simulator outputs the original communication signal of the vehicle and the newly added communication signal of the vehicle on the communication signal path. The magnetic field acquisition device collects the first magnetic field data when the original communication signal of the vehicle is transmitted on the load harness and the second magnetic field data when the original communication signal of the vehicle and the newly added communication signal of the vehicle are simultaneously transmitted on the load harness, and outputs them to the magnetic field data processing device. The magnetic field data processing device outputs the magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator. The utility model can determine whether the original communication signal of the vehicle and the newly added communication signal of the vehicle cause an increase in magnetic field strength when the overlapping path is transmitted by simulating the communication signal path of the real vehicle working condition and the electromagnetic environment, and collecting the magnetic field data when the original communication signal of the vehicle and the newly added communication signal of the vehicle are transmitted on the communication signal path, so as to provide a reference basis for the subsequent intelligent configuration of the vehicle, thereby improving the EMC anti-interference performance of the electronic and electrical components of the whole vehicle.

[0044] See also Figure 1 , a schematic structural diagram of a magnetic field environment simulation system disclosed in an embodiment of the utility model, the magnetic field environment simulation system includes: a signal source simulator 10, a real vehicle load harness 20, a simulated load device 30, a magnetic field acquisition device 40 and a magnetic field data processing device 50.

[0045] in:

[0046] The signal source simulator 10 is used to output the original vehicle communication signal and the vehicle newly added communication signal.

[0047] The signal source simulator 10 in this embodiment can support multi-channel, different frequency signal outputs, support a variety of real vehicle communication harness interfaces, and support adjustable output signal frequency.

[0048] In practical applications, the signal source simulator 10 first outputs the original communication signal of the vehicle, and then outputs the additional communication signal of the vehicle based on the original communication signal of the vehicle.

[0049] In this embodiment, the original communication signal of the vehicle is a signal transmitted on the current transmission path of the vehicle, and the newly added communication signal of the vehicle is a communication signal whose transmission path overlaps with the original communication signal of the vehicle.

[0050] The simulated load device 30 is used to connect corresponding loads according to the parameters of the electrical components of the actual vehicle.

[0051] The simulated load device 30 in this embodiment is used to support the integrity of the communication signal transmission link and can support multiple real vehicle communication signal interactions.

[0052] The actual vehicle load harness 20 has different load harnesses. Different load harnesses correspond to different harness types, harness lengths, and harness co-linearity.

[0053] Among them, the wiring harness type and load parameters can be configured according to the actual vehicle electrical parameters, so the magnetic field environment simulation system has strong scalability and a wide range of applications.

[0054] In practical applications, the corresponding load harness is selected for transmission according to different traditional communication signals.

[0055] The real vehicle load harness 20 in this embodiment is connected to the signal source simulator 10 and the simulated load device 30 respectively to form a communication signal path that simulates the working conditions and electromagnetic environment of the real vehicle. The signal source simulator 10, the real vehicle load harness 20 and the simulated load device 30 can be used to simulate the vehicle's newly added communication signals, set the communication frequency, and simulate the physical connection of the vehicle's communication signals.

[0056] The magnetic field acquisition device 40 is used to acquire first magnetic field data when the original vehicle communication signal is transmitted on the load harness and second magnetic field data when the original vehicle communication signal and the vehicle newly added communication signal are simultaneously transmitted on the load harness.

[0057] The magnetic field acquisition device 40 can collect magnetic field data around the load harness, and can support the collection of magnetic field data at different points and distances.

[0058] When the vehicle's newly added communication signal and the vehicle's original communication signal are high-speed and co-frequency signals, the magnetic field strength of the corresponding second magnetic field data will increase.

[0059] When the vehicle's newly added communication signal and the vehicle's original communication signal are not high-speed co-frequency signals, the magnetic field strength of the corresponding second magnetic field data is not much different from the magnetic field strength of the first magnetic field data.

[0060] The magnetic field data processing device 50 has a signal acquisition port and a signal output port.

[0061] The magnetic field data processing device 50 is connected to the magnetic field acquisition device 40 via a signal acquisition port, and the signal acquisition port is used to acquire the first magnetic field data and the second magnetic field data output by the magnetic field acquisition device 40 .

[0062] The magnetic field data processing device 50 is connected to the signal source simulator 10 via a signal output port, and the signal output port is used to output the magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator 10 .

[0063] In this embodiment, when the original communication signal of the vehicle and the newly added communication signal of the vehicle are high-speed same-frequency signals, it is easy to cause the magnetic field strength to increase. The corresponding magnetic field superposition result is: the first magnetic field data and the second magnetic field data have a magnetic field data superposition phenomenon.

[0064] On the contrary, when the original communication signal of the vehicle and the newly added communication signal of the vehicle are not high-speed co-frequency signals, if the magnetic field strength does not increase, the corresponding magnetic field superposition result is: there is no magnetic field data superposition phenomenon between the first magnetic field data and the second magnetic field data. This indicates that the newly added communication signal of the vehicle does not interfere with the original communication signal of the vehicle, and the newly added communication signal of the vehicle can be used when performing intelligent configuration of the vehicle.

[0065] It should be noted that, for the specific superposition principle of the first magnetic field data and the second magnetic field data, please refer to the existing mature solutions, which will not be repeated here.

[0066] Among them, the magnetic field data processing device 50 in the present application can be an ECU (Electronic Control Unit), a VCU (Vehicle Control Unit), an MCU (Micro Controller Unit), etc.

[0067] In summary, the embodiment of the utility model discloses a magnetic field environment simulation system, including a signal source simulator 10, a real vehicle load harness 20, a simulated load device 30, a magnetic field acquisition device 40 and a magnetic field data processing device 50. The signal source simulator 10 is connected to the simulated load device 30 through the real vehicle load harness 20 to form a communication signal path that simulates the working conditions and electromagnetic environment of the real vehicle. The signal source simulator 10 outputs the original communication signal of the vehicle and the newly added communication signal of the vehicle on the communication signal path. The magnetic field acquisition device 40 collects the first magnetic field data when the original communication signal of the vehicle is transmitted on the load harness and the second magnetic field data when the original communication signal of the vehicle and the newly added communication signal of the vehicle are simultaneously transmitted on the load harness, and outputs them to the magnetic field data processing device 50. The magnetic field data processing device 50 outputs the magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator 10. The utility model can determine whether the original communication signal of the vehicle and the newly added communication signal of the vehicle cause an increase in magnetic field strength when they are transmitted in overlapping paths by simulating the communication signal path of the actual vehicle working condition and the electromagnetic environment, so as to provide a reference basis for the subsequent intelligent configuration of the vehicle, thereby improving the EMC anti-interference performance of the electronic and electrical components of the whole vehicle.

[0068] To further optimize the above embodiment, see Figure 2 , a schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model, Figure 1 On the basis of the illustrated embodiment, the signal source simulator 10 comprises an operating element 11 and a signal generator 12 .

[0069] in:

[0070] The operating element 11 is used to set a first signal parameter corresponding to an original communication signal of the vehicle and a second signal parameter corresponding to a newly added communication signal of the vehicle.

[0071] In actual applications, the operating element 11 sets the first signal parameter and the second signal parameter in response to the user's operating instruction.

[0072] The first signal parameter and the second signal parameter include but are not limited to information such as signal frequency, amplitude, duty cycle, modulation type, etc.

[0073] The signal generator 12 is used to output a corresponding vehicle original communication signal according to the first signal parameter output by the operating element 11 , and to output a corresponding vehicle newly added communication signal according to the second signal parameter output by the operating element 11 .

[0074] The signal generator 12 in this embodiment is a device that can provide electrical signals of various frequencies, waveforms and output levels, and can output communication signals that meet signal parameter requirements.

[0075] When the operating element 11 outputs the first signal parameter to the signal generator 12 , the signal generator 12 may output a corresponding vehicle original communication signal according to the first signal parameter.

[0076] Likewise, when the operating element 11 outputs the second signal parameter to the signal generator 12 , the signal generator 12 can output the corresponding vehicle newly added communication signal according to the second signal parameter.

[0077] In summary, the utility model sets the first signal parameter corresponding to the original communication signal of the vehicle and the second signal parameter corresponding to the newly added communication signal of the vehicle through the operating element 11, and the signal generator 12 outputs the corresponding original communication signal of the vehicle according to the first signal parameter, and outputs the corresponding newly added communication signal of the vehicle according to the second signal parameter, thereby realizing the simulation of the vehicle communication signal under actual vehicle working conditions, so as to further determine whether the communication signal causes an increase in magnetic field strength when transmitted in overlapping paths.

[0078] Preferably, the operating element 11 may be an operating element with a display screen, for example, the operating element 11 may be a touch screen controller.

[0079] For details, see Figure 3 , a schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model, in which the operating element 11 has a display screen 111.

[0080] The magnetic field data processing device 50 is connected to the operating element 11 via a signal output port.

[0081] The signal output port is used to output the magnetic field superposition result to the display screen 111 for display.

[0082] In practical applications, after the magnetic field data processing device 50 obtains the first magnetic field data and the second magnetic field data from the magnetic field acquisition device 40, in addition to recording the first magnetic field data and the second magnetic field data, the first magnetic field data can be converted into a first magnetic field waveform, and the second magnetic field data can be converted into a second magnetic field waveform, and the comparison result (i.e., the magnetic field superposition result) can be obtained by comparing the first magnetic field waveform and the second magnetic field waveform, and the comparison result can be displayed on the display screen 111. The technician can determine whether magnetic field superposition occurs based on the comparison result.

[0083] In summary, the utility model displays the magnetic field superposition result on the display screen 111 of the operating element 11, which makes it easy for technicians to intuitively determine the magnetic field superposition situation, so as to provide a reference basis for subsequent vehicle intelligent configuration, thereby improving the EMC anti-interference performance of the vehicle's electronic and electrical components.

[0084] In actual applications, when magnetic field superposition occurs, an alarm can be used to alert technicians.

[0085] Therefore, to further optimize the above embodiment, see Figure 4 , a schematic diagram of the structure of another magnetic field environment simulation system disclosed in an embodiment of the utility model, in this embodiment, the signal source simulator 10 may also include: an alarm 13.

[0086] The alarm 13 is connected to the operating element 11 and is used for giving an alarm according to the alarm signal output by the operating element 11 .

[0087] The alarm signal may be generated by the operating element 11 when it is determined that the magnetic field superposition result meets the magnetic field superposition condition.

[0088] Preferably, the alarm 13 can be one of a light alarm, a sound alarm and a sound-light alarm, depending on actual needs, and this application does not limit it here.

[0089] In summary, the utility model provides an alarm 13 in the signal source simulator 10. The alarm 13 generates an alarm signal based on the alarm signal generated by the operating element 11 when it determines that the magnetic field superposition result meets the magnetic field superposition condition. The alarm can promptly remind the technician that magnetic field superposition occurs in the current magnetic field environment simulation process, so as to provide a reference basis for the subsequent intelligent configuration of the vehicle, thereby improving the EMC anti-interference performance of the electronic and electrical components of the whole vehicle.

[0090] In practical applications, when the operating element 11 does not have a display screen 111 , a display may be provided on the signal source simulator 10 .

[0091] Therefore, to further optimize the above embodiment, see Figure 5 , a schematic structural diagram of another magnetic field environment simulation system disclosed in an embodiment of the utility model, the signal source simulator 10 also includes: a display 14.

[0092] The magnetic field data processing device 50 is connected to the display 14 via a signal output port.

[0093] The signal output port is used to output the magnetic field superposition result to the display 14 for display.

[0094] In practical applications, after the magnetic field data processing device 50 obtains the first magnetic field data and the second magnetic field data from the magnetic field acquisition device 40, in addition to recording the first magnetic field data and the second magnetic field data, the first magnetic field data can also be converted into a first magnetic field waveform, and the second magnetic field data can be converted into a second magnetic field waveform, and the comparison result (i.e., the magnetic field superposition result) is obtained by comparing the first magnetic field waveform and the second magnetic field waveform, and the comparison result is displayed on the display 14. The technician can determine whether magnetic field superposition occurs based on the comparison result, and adjust the communication signal frequency based on the comparison result.

[0095] In summary, the utility model displays the magnetic field superposition result on the display 14 in the signal source simulator 10, so that technicians can intuitively determine the magnetic field superposition situation, so as to provide a reference basis for subsequent vehicle intelligent configuration, thereby improving the EMC anti-interference performance of the vehicle's electronic and electrical components.

[0096] To further optimize the above embodiment, see Figure 6 , a schematic structural diagram of another magnetic field environment simulation system disclosed in an embodiment of the utility model, in which the simulated load device 30 in this embodiment includes: a load connection panel 31.

[0097] The load connection panel 31 is used to connect the corresponding load.

[0098] In actual applications, the original vehicle communication signals output by the signal source simulator 10 are different, and the corresponding loads will also be different. The load connection panel 31 can be connected to different loads according to actual simulation requirements.

[0099] To further optimize the above embodiment, the magnetic field acquisition device 40 may include: a magnetic field probe 41 and a magnetic field receiving element 42 .

[0100] The magnetic field probe 41 is used to collect first magnetic field data and second magnetic field data on the load harness.

[0101] The magnetic field receiving element 42 is used to output the first magnetic field data and the second magnetic field data to the magnetic field data processing device 50 .

[0102] In this embodiment, the magnetic field probe 41 does not directly contact the load wire harness, but maintains a preset distance from the load wire harness to collect magnetic field data around the load wire harness, namely, the first magnetic field data and the second magnetic field data.

[0103] The magnetic field probe 41 supports the collection of magnetic field data at different points and distances of the load harness, and can meet the requirements of magnetic field collection in the frequency band of 10 Hz to 30 MHz.

[0104] In summary, the utility model collects the first magnetic field data when the original communication signal of the vehicle is transmitted on the load harness, and the second magnetic field data when the original communication signal of the vehicle and the newly added communication signal of the vehicle are simultaneously transmitted on the load harness through the magnetic field probe 41, and outputs the first magnetic field data and the second magnetic field data to the magnetic field data processing device 50 through the magnetic field receiving element 42, so that the magnetic field data processing device 50 outputs the magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator 10. The utility model simulates the communication signal path of the actual vehicle working condition and the electromagnetic environment, and collects the magnetic field data when the original communication signal of the vehicle and the newly added communication signal of the vehicle are transmitted in the communication signal path, so as to determine whether the original communication signal of the vehicle and the newly added communication signal of the vehicle cause an increase in magnetic field strength when they are transmitted in overlapping paths, so as to provide a reference basis for the subsequent intelligent configuration of the vehicle, thereby improving the EMC anti-interference performance of the electronic and electrical components of the whole vehicle.

[0105] Based on the above discussion, it can be known that the magnetic field environment simulation system disclosed in the utility model can verify the impact of the vehicle's newly added communication signal on the vehicle's magnetic field environment in the early stage of the development of new technologies and new functions of the vehicle, and support the forward development of products. By simulating the magnetic field environment, the problem of the harsh magnetic field environment of the vehicle caused by the superposition of the collinear magnetic field strength of the vehicle is solved. In addition, the communication signal frequency and the load harness can be adjusted according to actual needs, so that the simulation results are closer to the actual vehicle magnetic field environment and have high reliability.

[0106] In order to further verify that the magnetic field environment simulation system disclosed in the utility model can verify the impact of the vehicle's newly added communication signal on the vehicle's magnetic field environment in the early stage of the development of new vehicle technologies and new functions, and support product forward development, the utility model also provides a specific embodiment, as follows:

[0107] A research and development vehicle model was tested in the C-GCAP green car evaluation. Under the condition of rapid deceleration, the position margin behind the driver's left foot was 18.29dB, which did not meet the 5-star requirement of the C-GCAP green car evaluation regulations (minimum margin 22dB). After investigation by the magnetic field environment simulation system, it was found that the 2 times frequency of the 200Hz PWM dimming frequency of the left and right brake lights was radiated through the left cockpit wiring harness, causing the evaluation position margin behind the driver's left foot to fail to meet the C-GCAP minimum margin requirement. The specific reason is: the same frequency signal is transmitted on the same line, resulting in magnetic field overlap at the communication frequency and multiple frequency points. After simulating the magnetic field environment, it was determined that the brake light signal was adjusted from 200Hz to 150Hz, with a minimum margin of 31.131Db, and the vehicle passed the test. Among them, the test data before and after the rectification are respectively shown in the table below. Figure 7 The communication frequency shown is 200Hz magnetic field acquisition data and Figure 8 The communication frequency shown is 150Hz magnetic field data acquisition, Figure 7 and Figure 8The horizontal axis f represents the magnetic field frequency, unit Hz, and the vertical axis B / max represents the maximum magnetic field intensity, unit μT.

[0108] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0109] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0110] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnetic field environment simulation system, characterized in that: include: A signal source simulator, used to output the original vehicle communication signal and the vehicle's newly added communication signal; A simulated load device is used to connect corresponding loads according to the parameters of the actual vehicle electrical components; A real vehicle load harness, having different load harnesses, the real vehicle load harnesses are respectively connected to the signal source simulator and the simulated load device to form a communication signal path simulating the working condition and electromagnetic environment of the real vehicle; A magnetic field acquisition device, used for acquiring first magnetic field data when the load harness transmits the original communication signal of the vehicle and second magnetic field data when the load harness transmits the original communication signal of the vehicle and the newly added communication signal of the vehicle at the same time; A magnetic field data processing device having a signal acquisition port and a signal output port; The signal acquisition port is used to acquire the first magnetic field data and the second magnetic field data output by the magnetic field acquisition device; The signal output port is used to output the magnetic field superposition result of the first magnetic field data and the second magnetic field data to the signal source simulator.

2. The magnetic field environment simulation system according to claim 1, characterized in that: The signal source simulator comprises: An operating element, used to set a first signal parameter corresponding to the original communication signal of the vehicle and a second signal parameter corresponding to the newly added communication signal of the vehicle; A signal generator is used to output the original vehicle communication signal corresponding to the first signal parameter output by the operating element, and to output the newly added vehicle communication signal corresponding to the second signal parameter output by the operating element.

3. The magnetic field environment simulation system according to claim 2, characterized in that: The operating element has a display screen; The magnetic field data processing device is connected to the operating element via the signal output port; The signal output port is used to output the magnetic field superposition result to the display screen for display.

4. The magnetic field environment simulation system according to claim 3, characterized in that: The signal source simulator also includes: an alarm; The alarm is connected to the operating element and is used for giving an alarm according to the alarm signal output by the operating element.

5. The magnetic field environment simulation system according to claim 4, characterized in that: The alarm is one of a light alarm, a sound alarm and a sound and light alarm.

6. The magnetic field environment simulation system according to claim 2, characterized in that: The signal source simulator further comprises: a display; The magnetic field data processing device is connected to the display via the signal output port; The signal output port is used to output the magnetic field superposition result to the display for display.

7. The magnetic field environment simulation system according to claim 1, characterized in that: The simulated load device comprises: a load connection panel; The load connection panel is used to connect the corresponding load.

8. The magnetic field environment simulation system according to claim 1, characterized in that: The magnetic field acquisition device comprises: A magnetic field probe, used for collecting the first magnetic field data and the second magnetic field data; The magnetic field receiving element is used to output the first magnetic field data and the second magnetic field data to the magnetic field data processing device.

9. The magnetic field environment simulation system according to claim 8, characterized in that: The magnetic field probe supports the collection of magnetic field data at different points and distances of the load harness.

10. The magnetic field environment simulation system according to claim 1, characterized in that: Different load harnesses correspond to different harness types, harness lengths, and harness colinearity conditions.

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