Low-frequency magnetic field test system based on human body model

Abstract

The utility model provides a human body model-based low-frequency magnetic field test system, which comprises a human body model, a plurality of organ models and a data acquisition instrument are arranged in the human body model, each organ model is provided with a plurality of magnetic field probes, and the data acquisition instrument is arranged below the organ models and connected with the magnetic field probes. The human body model is filled with an electrolyte solution, and the organ model and the data acquisition instrument are both placed in the electrolyte solution. The magnetic field probe solves the problems that in the prior art, a used magnetic field probe with a fixed shape and a fixed size is greatly different from an actual human organ, and the magnetic field environment neglects the influence of human skin and in-vivo tissue fluid, so that measured magnetic field data is inaccurate.

Description

Technical Field

[0001] This utility model relates to the field of EMC testing technology, and in particular to a low-frequency magnetic field testing system based on a human body model. Background Technology

[0002] EMC (Electromagnetic Compatibility) refers to the ability of a device or system to operate in its electromagnetic environment without causing unacceptable electromagnetic interference to any other equipment in the environment. The vehicle electromagnetic field exposure test relative to the human body is an EMC test method. This method is used to test the low-frequency magnetic field received by the human body in the vehicle environment to ensure human safety in real-world applications.

[0003] According to common domestic and international EMC testing standards, the testing equipment for vehicle electromagnetic fields relative to human exposure includes a magnetic field probe, data transmission line, and data acquisition instrument. During testing of Category M passenger cars and Category M commercial vehicles (buses), the magnetic field probe needs to be placed at the center of the headrest, the center of the seat back, and the center of the seat cushion, respectively. For Category N commercial vehicles (trucks), in addition to fixed test points on each seat, the sleeper area accessible to the head also needs to be tested. For Category L vehicles, the measurement locations are the head, the center of the torso, and the center of the seating position. These different test locations simulate the effects of the magnetic field environment generated by the vehicle during operation on the human brain, left lung, right lung, heart, liver, stomach, left kidney, and right kidney. However, the fixed shape and size of the magnetic field probe used differ significantly from actual human organs; the magnetic field environment tested at the center of the seat back ignores the influence of human skin and internal tissue fluids, and cannot reflect the magnetic field received by vital abdominal organs in reality; the magnetic field values ​​received by each key organ cannot be accurately determined. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a low-frequency magnetic field testing system based on a human body model. This system solves the problems of inaccurate magnetic field data caused by the fixed shape and size of the magnetic field probes used in existing technologies, which differ significantly from actual human organs, and the magnetic field environment ignoring the influence of human skin and internal tissue fluid.

[0005] According to an embodiment of the present invention, a low-frequency magnetic field testing system based on a human body model includes: a human body model, wherein multiple organ models and a data acquisition device are disposed inside the human body model, each organ model is provided with multiple magnetic field probes, the data acquisition device is disposed below the organ model and connected to the magnetic field probes, the human body model is filled with an electrolyte solution, and the organ models and the data acquisition device are placed inside the electrolyte solution.

[0006] Preferably, the data acquisition device includes a housing and a storage module, a data processing module, an energy storage module, and a wireless communication module disposed inside the housing. The energy storage module is electrically connected to the storage module, the data processing module, and the wireless communication module. The housing is provided with eight interfaces connected to the data processing module.

[0007] Preferably, the organ model includes a brain-like magnetic field model, a left lung-like magnetic field model, a right lung-like magnetic field model, a heart-like magnetic field model, a liver-like magnetic field model, a stomach-like magnetic field model, a left kidney-like magnetic field model, and a right kidney-like magnetic field model. Each organ model is equipped with a cluster bus, and the magnetic field probes on the surface of each organ model are connected to the cluster bus. The free end of the cluster bus is connected to an 8-channel interface.

[0008] Preferably, the surface of the organ model is provided with multiple sockets for connection to the bundled bus, the magnetic field probe is movably inserted into the sockets, and a waterproof gasket is provided between the sockets and the magnetic field probe.

[0009] Preferably, the human body model is made of biomimetic materials, and the conductivity, relative permittivity, relative magnetic permeability, and density structure of the human body model are the same as those of human muscle tissue, and the conductivity, relative permittivity, relative magnetic permeability, and density of the electrolyte solution are the same as those of human body fluids.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] By using biomimetic materials to create human body models, filling the models with electrolyte solutions and human organ models, and placing magnetic field probes on the human organ models, the state of the actual human body when exposed to a magnetic field can be simulated as closely as possible. This improves the accuracy of experimental data and provides a more detailed understanding of the intensity of the magnetic field received by each organ, making it easier to conduct vehicle electromagnetic field exposure tests on the human body. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the test system according to an embodiment of the present utility model.

[0013] Figure 2 This is a structural diagram of an organ model according to an embodiment of the present invention.

[0014] In the above figures: 1. Brain-shaped magnetic field probe; 2. Left lung-shaped magnetic field model; 3. Right lung-shaped magnetic field model; 4. Heart-shaped magnetic field model; 5. Liver-shaped magnetic field model; 6. Stomach-shaped magnetic field model; 7. Left kidney-shaped magnetic field model; 8. Right kidney-shaped magnetic field model; 9. Data acquisition instrument; 10. Electrolyte solution; 11. Cluster bus; 12. Human body model; 13. Wireless communication module; 14. Energy storage module. Detailed Implementation

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 and Figure 2 As shown in the figure, this utility model embodiment proposes a low-frequency magnetic field testing system based on a human body model, including: a human body model 12, which contains multiple organ models and a data acquisition instrument 9. Each organ model is equipped with multiple magnetic field probes. The data acquisition instrument 9 is located below the organ model and connected to the magnetic field probes. The human body model 12 is filled with an electrolyte solution 10. The organ models and the data acquisition instrument 9 are placed inside the electrolyte solution 10. The human body model 12 is made of biomimetic materials. The conductivity, relative permittivity, relative permeability, and density structure of the human body model 12 are the same as those of human muscle tissue. The conductivity, relative permittivity, relative permeability, and density of the electrolyte solution 10 are the same as those of human body fluids.

[0017] Meanwhile, since the data acquisition device 9 and the organ model are suspended inside the human body, they form a unified whole with the human body model 12, thereby improving the ease of moving the testing system, saving the time of assembling multiple devices, and avoiding the slowdown of EMC testing due to the loss of a certain device, thus saving testing time.

[0018] By using a human body model 12 made of biomimetic materials, filling the human body model 12 with an electrolyte solution 10 and human organ models, and setting a magnetic field probe on the human organ models, the state of the actual human body when subjected to a magnetic field is simulated as much as possible. This improves the accuracy of experimental data and provides a more detailed understanding of the intensity of the magnetic field received by each organ, which is more conducive to completing the vehicle electromagnetic field exposure test relative to the human body.

[0019] The data acquisition unit 9 includes a housing and a storage module, a data processing module, an energy storage module 14 and a wireless communication module 13 disposed inside the housing. The energy storage module 14 is electrically connected to the storage module, the data processing module and the wireless communication module 13. The housing is equipped with 8 interfaces connected to the data processing module.

[0020] The storage module is used to collect and store the magnetic field data received by the magnetic field probe. The data processing module is used to process the magnetic field data, remove abnormal data, and perform preliminary analysis on the magnetic field data. The wireless communication module 13 communicates with the host computer outside the test system and is used to send the original magnetic field data and the magnetic field data after preliminary analysis and processing to the host computer. The power storage module 14 supplies power to all components in all data acquisition instruments 9.

[0021] The organ models include a brain-like magnetic field model, a left lung-like magnetic field model 2, a right lung-like magnetic field model 3, a heart-like magnetic field model 4, a liver-like magnetic field model 5, a stomach-like magnetic field model 6, a left kidney-like magnetic field model 7, and a right kidney-like magnetic field model 8. Each organ model is equipped with a cluster bus 11, and the magnetic field probes on the surface of each organ model are connected to the cluster bus 11. The free end of the cluster bus 11 is connected to an 8-channel interface.

[0022] Each organ model is set in a corresponding position inside the human body model 12. Magnetic field probes are set on the organ models with the same shape as human organs. Their positions are more in line with the actual situation and are conducive to further understanding the intensity of the magnetic field received by each organ and collecting more accurate magnetic field data. At the same time, the 8 interfaces are connected to the cluster bus 11 in the 8 human organ models respectively, and receive the data from the magnetic field probes on the 8 human organ models respectively, which facilitates the differentiation and summarization of data.

[0023] The surface of the organ model is provided with multiple sockets for connection to the bundle bus 11. The magnetic field probe is movably inserted into the sockets, and a waterproof gasket is provided between the sockets and the magnetic field probe.

[0024] The system employs a pluggable magnetic field probe, which facilitates its replacement. Waterproof gaskets prevent electrolyte solution 10 from entering the socket, protecting electronic components from damage and extending the system's lifespan.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A low-frequency magnetic field testing system based on a human body model, characterized in that: include: The human body model contains multiple organ models and a data acquisition device. Each organ model is equipped with multiple magnetic field probes. The data acquisition device is located below the organ model and connected to the magnetic field probes. The human body model is filled with an electrolyte solution, and the organ models and the data acquisition device are placed inside the electrolyte solution.

2. The low-frequency magnetic field testing system based on a human body model as described in claim 1, characterized in that: The data acquisition device includes a housing and a storage module, a data processing module, an energy storage module, and a wireless communication module disposed inside the housing. The energy storage module is electrically connected to the storage module, the data processing module, and the wireless communication module. The housing is provided with 8 interfaces connected to the data processing module.

3. The low-frequency magnetic field testing system based on a human body model as described in claim 2, characterized in that: The organ models include a brain-like magnetic field model, a left lung-like magnetic field model, a right lung-like magnetic field model, a heart-like magnetic field model, a liver-like magnetic field model, a stomach-like magnetic field model, a left kidney-like magnetic field model, and a right kidney-like magnetic field model. Each organ model is equipped with a cluster bus, and the magnetic field probes on the surface of each organ model are connected to the cluster bus. The free end of the cluster bus is connected to an 8-channel interface.

4. The low-frequency magnetic field testing system based on a human body model as described in claim 3, characterized in that: The surface of the organ model is provided with multiple sockets for connection to the bundled bus. The magnetic field probe is movably inserted into the sockets, and a waterproof gasket is provided between the sockets and the magnetic field probe.

5. The low-frequency magnetic field testing system based on a human body model as described in claim 1, characterized in that: The human body model is made of biomimetic materials. The conductivity, relative permittivity, relative magnetic permeability, and density structure of the human body model are the same as those of human muscle tissue. The conductivity, relative permittivity, relative magnetic permeability, and density of the electrolyte solution are the same as those of human body fluids.

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