Vehicle test system based on multiple electromagnetic columns

Abstract

The utility model relates to a vehicle test system based on multiple electromagnetic columns. The vehicle test system comprises an electromagnetic multi-column device for bearing a tested vehicle, wherein each column of the electromagnetic multi-column device bears one of a plurality of wheels of the tested vehicle; a plurality of sensors, each of the plurality of sensors being arranged at one of the plurality of wheels of the vehicle under test; and the data acquisition equipment is used for acquiring sensing results of the plurality of sensors. Each sensor of the plurality of sensors is isolated from a corresponding wheel at least by an insulating member. Each of the plurality of sensors is electromagnetically shielded by one of a plurality of first electromagnetic shielding means, and the data acquisition device is electromagnetically shielded by a second electromagnetic shielding means. The electromagnetic multi-column device, the plurality of sensors, the data acquisition device, the plurality of first electromagnetic shielding devices, the second electromagnetic shielding device and the tested vehicle are connected to the ground.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle testing, and in particular to a vehicle testing system based on an electromagnetic multi-column system. Background Technology

[0002] Multi-column test benches (e.g., four-column benches) are widely used testing equipment for road simulation testing of vehicles (e.g., complete vehicles). Multi-column test benches apply vertical forces (i.e., in the z-axis direction) to multiple wheels of the vehicle under test (VUT) through their multiple columns to simulate the vertical loads experienced by the VUT during driving, such as bumps, vibrations, and other external forces. Multi-column test benches can be used for, for example, to test for abnormal noises and vibrations in vehicles, and for durability testing.

[0003] Traditional multi-column equipment can include hydraulic multi-column equipment (also known as electro-hydraulic servo multi-column equipment) that uses hydraulic power systems and piping systems to drive the columns. However, hydraulic multi-column equipment can be energy-intensive and have high operating costs. In recent years, a novel type of multi-column equipment has emerged: electromagnetic multi-column equipment, which uses electromagnetic drive technology to drive the columns. Electromagnetic multi-column equipment does not require hydraulic power systems and piping systems, and can offer advantages such as faster response, better performance, lower energy consumption, and lower operating costs.

[0004] Therefore, there is a need for an improved vehicle testing system based on electromagnetic multi-column technology. Utility Model Content

[0005] This disclosure provides a vehicle testing system based on an electromagnetic multi-column system.

[0006] According to one aspect of this disclosure, an electromagnetic multi-column vehicle testing system is provided. The vehicle testing system may include an electromagnetic multi-column device that carries a vehicle under test, wherein each column of the electromagnetic multi-column device carries one of a plurality of wheels of the vehicle under test; a plurality of sensors, each of which is arranged at one of the plurality of wheels of the vehicle under test; and a data acquisition device for acquiring the sensing results of the plurality of sensors; wherein each of the plurality of sensors is isolated from its corresponding wheel at least by an insulating member; wherein each of the plurality of sensors is electromagnetically shielded by one of a plurality of first electromagnetic shielding devices, and the data acquisition device is electromagnetically shielded by a second electromagnetic shielding device; and wherein the electromagnetic multi-column device, the plurality of sensors, the data acquisition device, the plurality of first electromagnetic shielding devices, the second electromagnetic shielding device, and the vehicle under test are connected to ground.

[0007] According to some implementation schemes, the data acquisition device may have multiple output terminals for outputting the sensing results of the multiple sensors, and the multiple output terminals of the data acquisition device may be connected at the same potential.

[0008] According to some implementation schemes, the multiple output terminals of the data acquisition device can be connected at the same potential via conductive cables.

[0009] According to some implementation schemes, the multiple output terminals of the data acquisition device can be connected at the same potential via an equipotential connector.

[0010] According to some implementations, each of the plurality of sensors may include an acceleration sensor for measuring the acceleration of the corresponding wheel in the vertical direction.

[0011] According to some implementation schemes, the insulating component may include an insulating rigid component.

[0012] According to some implementation schemes, the insulating component may include a cured insulating adhesive.

[0013] According to some implementation schemes, each of the plurality of first electromagnetic shielding devices may include an electromagnetic shielding box, and each of the plurality of sensors may be arranged in a corresponding electromagnetic shielding box.

[0014] According to some implementation schemes, the second electromagnetic shielding device may include an electromagnetic shielding box, and the data acquisition equipment may be arranged inside the electromagnetic shielding box.

[0015] According to some implementation schemes, the electromagnetic multi-column device, the plurality of sensors, the data acquisition device, the plurality of first electromagnetic shielding devices, the second electromagnetic shielding devices, and the grounding terminal of the vehicle under test can be connected to the grounding terminal of the controller of the electromagnetic multi-column device.

[0016] According to some implementation schemes, each of the plurality of sensors can be fixed to the nut end face of the brake caliper associated with the corresponding wheel.

[0017] Other features and advantages of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments of the present disclosure and, together with the specification, serve to explain the principles of the disclosure. Note that the drawings are not drawn to scale.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0020] Figure 1 A schematic diagram of a vehicle testing system according to an exemplary embodiment of the present disclosure is shown.

[0021] Figure 2 An enlarged schematic diagram of the vicinity of the wheel of a vehicle under test according to an exemplary embodiment of the present disclosure is shown, illustrating example locations where sensors can be arranged.

[0022] Figure 3 An exemplary configuration of a computing device that can implement embodiments of the present disclosure is shown. Detailed Implementation

[0023] The present disclosure will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the present disclosure more complete and to fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments.

[0024] It should be understood that the terminology used herein is for describing specific embodiments only and is not intended to limit this disclosure. All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0025] In this document, the term “A or B” includes both “A and B” and “A or B”, rather than exclusively including only “A” or only “B”, unless otherwise specified.

[0026] In this document, the term "exemplary" means "serving as an example, instance, or illustration." Any implementation described herein is not necessarily to be construed as preferred or advantageous over other implementations. Moreover, this disclosure is not limited to any expressed or implied theory given in the foregoing technical field, background art, disclosure, or specific embodiments.

[0027] Additionally, for reference purposes only, terms such as "first," "second," etc., may be used in this document, and "first" or "second" may refer to multiple "first" or "second." For example, unless the context explicitly indicates otherwise, the words "first," "second," and other such numerical terms relating to structures or elements do not imply order, priority, or importance.

[0028] It should also be understood that the term "comprising / including" as used herein indicates the presence of the indicated feature, whole, step, operation, unit, and / or component, but does not preclude the presence or addition of one or more other features, wholes, steps, operations, units, and / or components, and / or combinations thereof. Unless otherwise defined, all terms (including technical and scientific terms) are used herein in the general sense of their meaning in the field to which the example pertains. Note that in this document, the terms "multi-column apparatus," "multi-column bench," "multi-column platform," and "multi-column test bench" are used interchangeably.

[0029] As described above, multi-post (e.g., four-post) equipment can be used for vehicle road simulation tests such as noise and rattle testing. Multi-post equipment applies vertical (i.e., z-axis) forces to multiple wheels of the vehicle under test (VUT) through its multiple posts to simulate the vertical loads experienced by the VUT during driving. The intensity and frequency of these vertical loads can be adjusted using the controller of the multi-post equipment to simulate driving conditions on different road surfaces.

[0030] Specifically, in road simulation testing using multi-column equipment, various sensors, such as acceleration sensors and displacement sensors, can be installed on the vehicle under test (e.g., on the wheels) to collect data on the forces and displacements experienced by the vehicle during the test or driving process. Before the test, the vehicle is first driven on a real road, and these sensors are used to collect displacement data, acceleration data, etc. (e.g., in the vertical direction) of the vehicle while driving on that road surface. The collected sensor data is then processed and converted into a road spectrum (also known as a road surface spectrum, or simply a road spectrum), such as a road surface roughness power spectral density curve representing the change of vertical displacement with spatial frequency in logarithmic coordinates, or a simple curve representing the change of vertical displacement with driving distance. The road spectrum can be used to reflect the road surface roughness.

[0031] Then, in the road simulation test, the road spectrum of a previously acquired road is input into the controller of the multi-column device. The controller uses this road spectrum data to control the vertical load applied to the wheels of the vehicle under test. For example, the controller can iteratively and gradually change the vertical load applied to the wheels. Simultaneously, the sensing results from each sensor can be acquired via a data acquisition device (DAE). The controller can compare the sensor data acquired in real time from the DAE with the road spectrum data (e.g., by converting the sensor data into data similar to the road spectrum data), and iteratively control the vertical load applied to the vehicle under test based on this, so that as the iteration progresses, the sensor data eventually matches the input road spectrum data. This process is also called road spectrum iteration. In this way, the road spectrum (road surface unevenness) of a previously acquired real road can be "applied" to the vehicle under test, thereby simulating the vertical load experienced by the vehicle during driving, just as if the vehicle were driving on a real road.

[0032] As mentioned above, in recent years, electromagnetic multi-column devices have emerged to replace traditional hydraulic multi-column devices. Electromagnetic multi-column devices can be driven by electromagnetic technology instead of traditional hydraulic power systems and piping systems, and have advantages such as faster response speed, better performance, lower energy consumption, and lower operating costs. However, because they are driven and controlled electromagnetically, electromagnetic multi-column devices may cause electromagnetic interference to the vehicle under test and the data acquisition equipment.

[0033] For example, when using an electromagnetic multi-column test system for the road simulation tests described above, the following phenomenon may occur: simply activating the electromagnetic multi-column test system (powering it on) without applying any load (drive signal) to the vehicle may result in one or more accelerometers displaying abnormal acceleration signals ranging from a few tenths of a g to several g, and the location of these acceleration signals is random. This phenomenon can affect the accuracy of the acquired sensor data, thus significantly impacting subsequent road simulation tests. This electromagnetic interference is particularly severe when the vehicle under test is an electric vehicle. Conventional solutions effective for hydraulic multi-column test systems (e.g., conventional grounding or shielding methods, replacing the data acquisition equipment) are insufficient to address this problem. Therefore, an improved vehicle testing system based on electromagnetic multi-column test systems is needed to resolve this electromagnetic interference phenomenon.

[0034] Figure 1 A schematic diagram of a vehicle testing system 100 according to an exemplary embodiment of the present disclosure is shown. Figure 1As shown, the vehicle testing system 100 of this disclosure may include an electromagnetic multi-column device 110. As described above, the electromagnetic multi-column device 110 may be a multi-column device driven and controlled electromagnetically. It should be noted that, for ease of explanation and simplicity, in… Figure 1 In the diagram, the electromagnetic multi-column device 110 is shown with four columns 112a, 112b, 112c, and 112d (i.e., a four-column device), but those skilled in the art will understand that this disclosure is not limited thereto, and the electromagnetic multi-column device 110 may have fewer or more columns. For example, it is conceivable that the electromagnetic multi-column device 110 may have more than four columns (e.g., a six-column device) to test large trucks or special vehicles with more than four wheels. Alternatively, the electromagnetic multi-column device 110 may have fewer than four columns to test only some wheels of a car or to test vehicles such as motorcycles. Therefore, the electromagnetic multi-column device 110 may have a suitable number of columns to match the vehicles to be tested.

[0035] The electromagnetic multi-column device 110 can support the vehicle under test 160. Specifically, the columns 112a, 112b, 112c, and 112d of the electromagnetic multi-column device 110 can respectively support the wheels 162a, 162b, 162c, and 162d of the vehicle under test 160. For example, the columns of the electromagnetic multi-column device 110 may have tray-like structures at their upper ends (e.g., tray-like structure 114a of column 112a), and these tray-like structures can be used to support the wheels of the vehicle under test 160. In other words, before testing, the vehicle under test 160 can be parked on the electromagnetic multi-column device such that the centers of the wheels 162a, 162b, 162c, and 162d roughly correspond to the centers of these trays in the horizontal direction (xy plane). As described above, during the test, the electromagnetic multi-column device 110 can apply a vertical load (i.e., the z-axis direction) to the wheels 162a, 162b, 112c and 112d through its columns 112a, 112b, 112c and 112d (e.g., in this embodiment, it can be simply understood as applying acceleration) to simulate the vertical load on the vehicle under test 160 during driving.

[0036] It should be noted that, for ease of illustration and simplicity, the vehicle under test 160 is shown as having four wheels 162a, 162b, 162c, and 162d. However, those skilled in the art will understand that this disclosure is not limited thereto, and the vehicle under test 160 may have fewer or more wheels. For example, when the vehicle under test 160 is a large truck or a large fire truck, it may have more than four wheels, while when it is a motorcycle, it may have fewer than four wheels. Furthermore, the vehicle under test 160 may be any suitable vehicle, including but not limited to automobiles, trucks, vans, motorcycles, special vehicles, fuel-powered vehicles, electric vehicles, etc.

[0037] It should also be noted that, for ease of description and for simplicity, in Figure 1 The illustration shows an example of columns 112a, 112b, 112c, and 112d carrying wheels 162a, 162b, 162c, and 162d with the columns raised to a certain height relative to the lower body of the electromagnetic multi-column device 110. However, those skilled in the art should understand that this disclosure is not limited thereto. For example, in a real system, depending on the state of the test, columns 112a, 112b, 112c, and 112d may not be raised much, so that the tray-like structure is substantially flush with the upper surface of the lower body of the electromagnetic multi-column device 110. Alternatively, columns 112a, 112b, 112c, and 112d may be raised to different heights, and so on. It should be understood that... Figure 1 The components are not drawn to scale, but rather exaggerated appropriately for ease of explanation. Furthermore, in Figure 1 In the image, components that may be obscured by the main body of the vehicle under test are shown in dashed lines.

[0038] The vehicle testing system 100 may also include multiple (e.g., in) Figure 1 The test vehicle 160 is shown with four sensors 120a, 120b, 120c, and 120d, which are used to measure specific parameters of wheels 162a, 162b, 162c, and 162d during testing. For this purpose, multiple sensors can be fixed to the respective wheels. For example, multiple sensors can be fixed to the rigid components of the unsprung portion of the respective wheels. It should be noted that the term "wheel" here includes not only wheels that are detachable from the vehicle body in a narrow sense (e.g., wheel hubs, tires, wheel covers), but also parts such as the vehicle suspension near the wheel that are located within or adjacent to the wheel when the wheel is mounted on the vehicle body, as if they were part of the wheel. For example, in one exemplary embodiment, each of sensors 120a, 120b, 120c, and 120d can be fixed to... Figure 2The dashed box in the figure shows the nut end face of the brake caliper. However, this disclosure is not limited thereto, and the multiple sensors 120a, 120b, 120c and 120d can be arranged at any suitable location on, inside or near the wheel to facilitate sensing the corresponding indicators.

[0039] In some embodiments, each of sensors 120a, 120b, 120c, and 120d may be an acceleration sensor for sensing the vertical acceleration of the corresponding wheel 162a, 162b, 162c, or 162d. In other embodiments, each of sensors 120a, 120b, 120c, and 120d may also be a displacement sensor, a force sensor, or any other suitable sensor. Note that, for simplicity, Figure 1 In this invention, only one sensor is installed at each wheel, but this disclosure is not limited to this, and two or more sensors can be installed at each wheel simultaneously.

[0040] Each of sensors 120a, 120b, 120c, and 120d can be isolated from the corresponding wheel 162a, 162b, 162c, or 162d by an insulating member (not shown). In some embodiments, the insulating member can be an insulating rigid member. In some embodiments, the insulating member can be a cured insulating adhesive. In other words, each of sensors 120a, 120b, 120c, and 120d can be adhered to the wheel by an insulating adhesive. Such an insulating adhesive can have a certain rigidity after curing. For example, the insulating adhesive can include a cold-curing adhesive composed of methyl methacrylate, such as X60 adhesive, etc.

[0041] The vehicle testing system 100 may also include multiple (e.g., in) Figure 1Four first electromagnetic shielding devices 130a, 130b, 130c, and 130d are shown in the diagram, used to electromagnetically shield multiple sensors 120a, 120b, 120c, and 120d, respectively. In some embodiments, the first electromagnetic shielding devices 130a, 130b, 130c, and 130d may be customized electromagnetic shielding boxes or enclosures based on the size of the respective sensors, used to enclose the sensor within them. In other words, in such embodiments, sensors 120a, 120b, 120c, and 120d may be arranged inside the respective first electromagnetic shielding devices 130a, 130b, 130c, and 130d. In alternative embodiments, the first electromagnetic shielding devices 130a, 130b, 130c, and 130d may also be implemented using electromagnetic shielding films or the like. It should be noted that when the first electromagnetic shielding devices 130a, 130b, 130c and 130d completely contain the corresponding sensors 120a, 120b, 120c and 120d, fixing the sensors to the wheel means fixing the corresponding first electromagnetic shielding devices to the wheel.

[0042] The vehicle testing system 100 may also include a data acquisition device (DAE) 140. The data acquisition device 140 can acquire the sensing results from various sensors 120a, 120b, 120c, and 120d. In other words, the outputs of sensors 120a, 120b, 120c, and 120d can be connected to multiple points of the data acquisition device 140 (e.g., in...). Figure 1 The data acquisition device 140 is shown as four input terminals 142a, 142b, 142c, and 142d. In some embodiments, the data acquisition device 140 can also process the sensed data from the various sensors, such as filtering, Fourier transform, format conversion, etc. Furthermore, the data acquisition device 140 may also have a display device (not shown), such as multiple displays for displaying the sensing results of multiple sensors 120a, 120b, 120c, and 120d. The data acquisition device 140 can be accessed via multiple (e.g., in...) Figure 1 The output terminals 144a, 144b, 144c and 144d (shown as four in the diagram) output the (processed and / or unprocessed) sensing results of the corresponding sensors 120a, 120b, 120c and 120d to other devices, such as the controller (not shown) of the electromagnetic multi-column device 110.

[0043] The vehicle testing system 100 may further include a second electromagnetic shielding device 150 for electromagnetic shielding the data acquisition device 140. In some embodiments, the second electromagnetic shielding device 150 may be an electromagnetic shielding box, electromagnetic shielding enclosure, or electromagnetic shielding cabinet customized according to the size of the data acquisition device 140, used to enclose the data acquisition device 140 within it. In other words, in such embodiments, the data acquisition device 140 may be arranged inside the second electromagnetic shielding device 150. In alternative embodiments, the second electromagnetic shielding device 150 may also be implemented by means of an electromagnetic shielding film or the like. Note that when the data acquisition device 140 includes a display device, the second electromagnetic shielding device 150 may have a transparent outer wall so that a user can view the displayed content inside from outside the second electromagnetic shielding device 150.

[0044] In this embodiment, the electromagnetic multi-column device 110 (e.g., multiple columns 112a, 112b, 112c, and 112d and / or their lower body), multiple sensors 120a, 120b, 120c, and 120d, multiple first electromagnetic shielding devices 130a, 130b, 130c, and 130d, data acquisition device 140, second electromagnetic shielding device 150, and the vehicle under test 160 can be connected to ground. For example, the grounding terminals of the electromagnetic multi-column device 110, multiple sensors 120a, 120b, 120c, and 120d, multiple first electromagnetic shielding devices 130a, 130b, 130c, and 130d, data acquisition device 140, second electromagnetic shielding device 150, and the vehicle under test 160 can be connected to the grounding terminal of the controller of the electromagnetic multi-column device 110, thereby achieving joint grounding. Furthermore, the interior walls or walls of the laboratory environment where the vehicle testing system 100 is located can also be connected to ground to further reduce electromagnetic interference. It should be noted that, for the sake of simplicity in the accompanying drawings, [the following text is missing]. Figure 1 The diagram only schematically illustrates the grounding of one of the multiple sensors 120a, 120b, 120c and 120d and one of the multiple first electromagnetic shielding devices 130a, 130b, 130c and 130d, but those skilled in the art should understand that the other sensors and first electromagnetic shielding devices can also be grounded in a similar manner.

[0045] In one exemplary embodiment, the output terminals 144a, 144b, 144c, and 144d of the data acquisition device 140 (or the cables connected to these output terminals) can be equipotentially connected. For example, the output terminals 144a, 144b, 144c, and 144d can be equipotentially connected via an equipotential connector 146. The equipotential connector 146 can be a specially designed equipotential bonding box for connecting the output terminals 144a, 144b, 144c, and 144d (or the cables connected to these output terminals) together. Alternatively, conductive cables or other suitable means can also be used to equipotentially connect the output terminals 144a, 144b, 144c, and 144d. Such equipotential connection ensures that the acceleration signals of multiple channels at the output terminals of the data acquisition device 140 are not interfered with by the potential difference between them. In an embodiment where the output of the data acquisition device 140 is connected to the controller of the electromagnetic multi-column device 110, such equipotential bonding can eliminate abnormal signals in the sensor sensing results received by the controller, thereby further reducing the impact of electromagnetic interference and making the controller's control more precise.

[0046] In some embodiments, the vehicle testing system 100 may further include a controller (not shown) for the electromagnetic multi-column device 110. As described above, the controller may be configured to receive (processed and / or unprocessed) sensing results from various sensors output from the data acquisition device 140, and may control the electromagnetic multi-column device 110 based on these sensing results and road spectrum data input to the controller, for example, controlling the vertical loads applied to the wheels 162a, 162b, 162c, and 162d of the vehicle under test 160. This allows for road spectrum iteration as described above, and the performance of various road simulation tests on the vehicle under test 160, such as noise and vibration tests, durability tests, NVH tests, etc.

[0047] The system described above can effectively and efficiently solve the electromagnetic interference problem caused by the introduction of electromagnetic multi-column devices. Specifically, by using the above-described arrangements (e.g., insulation and isolation between the sensor and the wheel, electromagnetic shielding of the sensor and data acquisition device, joint grounding of each component, and / or equipotential bonding of the output terminal of the data acquisition device), abnormal signals in the sensor sensing data received and displayed by the data acquisition device 140 can be eliminated, and abnormal signals in the sensor sensing data received by the controller of the electromagnetic multi-column device 110 can also be eliminated. This improves the accuracy of the received sensing data, thereby enabling more accurate vehicle road simulation testing and control.

[0048] Furthermore, experiments show that the system described above according to this disclosure is also applicable to hydraulic multi-column devices (in other words, the electromagnetic multi-column device 110 in the system can be replaced by a hydraulic multi-column device) and can eliminate electromagnetic interference therein. Moreover, the system according to this disclosure is applicable not only to cases where the vehicle under test is a fuel-powered vehicle, but also to cases where the vehicle under test is a new energy vehicle (e.g., an electric vehicle).

[0049] It should be recognized that, Figure 1 This is illustrative and not intended to limit the embodiments of this disclosure. For example, Figure 1 The various entities shown can be arranged and / or include sub-components or functions not specifically described, depending on different configurations. Other variations, modifications, and alternatives will be recognized by those skilled in the art.

[0050] The above illustrations, through various diagrams, have described the disclosed concept and specific embodiments. The following refers to… Figure 3 The description describes an exemplary configuration of a computing device 300 that can implement the data acquisition device 140 and the controller of the electromagnetic multi-column device 110 according to embodiments of the present disclosure. Figure 3 Exemplary configurations of computing device 300 that can implement embodiments of the present disclosure are shown. Computing device 300 is an example of a hardware device to which the foregoing aspects of the present disclosure can be applied. Computing device 300 can be any machine configured to perform processing and / or computation. Computing device 300 can be, but is not limited to, a workstation, server, desktop computer, laptop computer, tablet computer, personal data assistant (PDA), smartphone, in-vehicle computer, or a combination thereof.

[0051] like Figure 3As shown, computing device 300 may include one or more components that may be connected to or communicate with bus 302 via one or more interfaces. Bus 302 may include, but is not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, Enhanced ISA (EISA) bus, Video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus. Computing device 300 may include, for example, one or more processors 304, one or more input devices 306, and one or more output devices 308. The one or more processors 304 may be any type of processor and may include, but is not limited to, one or more general-purpose processors or special-purpose processors (such as dedicated processing chips). Input devices 306 may be any type of input device capable of inputting information to the computing device and may include, but is not limited to, a mouse, keyboard, touchscreen, microphone, and / or remote controller. Output devices 308 may be any type of device capable of presenting information and may include, but is not limited to, a monitor, speaker, video / audio output terminal, vibrator, and / or printer.

[0052] The computing device 300 may also include or be connected to a non-transitory storage device 314, which may be any non-transitory storage device capable of storing data, and may include, but is not limited to, disk drives, optical storage devices, solid-state storage, floppy disks, flexible disks, hard disks, magnetic tapes or any other magnetic media, compressed disks or any other optical media, cache memory and / or any other storage chip or module, and / or any other medium from which a computer may read data, instructions and / or code. The computing device 300 may also include random access memory (RAM) 310 and read-only memory (ROM) 312. ROM 312 may store executable programs, utilities, or processes in a non-volatile manner. RAM 310 provides volatile data storage and stores instructions related to the operation of the computing device 300. The computing device 300 may also include a network / bus interface 316 coupled to a data link 318. Network / bus interface 316 can be any kind of device or system capable of enabling communication with external devices and / or networks, and may include, but is not limited to, modems, network cards, infrared communication devices, wireless communication devices and / or chipsets (such as Bluetooth). TM Equipment, 1302.11 equipment, WiFi equipment, WiMax equipment, cellular communication facilities, etc.

[0053] The various aspects, implementations, specific implementations, or features of the foregoing embodiments may be used individually or in any combination. The various aspects of the foregoing embodiments may be implemented by software, hardware, or a combination of hardware and software.

[0054] For example, the aforementioned embodiments can be embodied in computer-readable code on a computer-readable medium. A computer-readable medium is any data storage device capable of storing data that can subsequently be read by a computer system. Examples of computer-readable media include read-only memory, random access memory, CD-ROM, DVD, magnetic tape, hard disk drive, solid-state drive, and optical data storage devices. Computer-readable media can also be distributed across network-coupled computer systems, allowing the computer-readable code to be stored and executed in a distributed manner.

[0055] For example, the aforementioned implementation scheme can take the form of hardware circuits. Hardware circuits can include any combination of combinational logic circuits, clock storage devices (such as floppy disks, flip-flops, latches, etc.), finite state machines, memories such as static random access memory or embedded dynamic random access memory, custom-designed circuits, programmable logic arrays, etc.

[0056] In one embodiment, the hardware circuit according to this disclosure can be implemented by encoding a circuit description using a hardware description language (HDL) such as Verilog or VHDL. An HDL description can be synthesized from a cell library designed for a given integrated circuit manufacturing technology and can be modified for timing, power, and other reasons to obtain a final design database, which can be transferred to a factory for integrated circuit production via a semiconductor manufacturing system. The semiconductor manufacturing system can produce integrated circuits by (e.g., on a wafer that may include a mask) depositing semiconductor material, removing material, changing the shape of the deposited material, modifying the material (e.g., by doping the material or modifying the dielectric constant using ultraviolet treatment), etc. Integrated circuits can include transistors and may also include other circuit elements (e.g., passive elements such as capacitors, resistors, inductors, etc.) and interconnections between transistors and circuit elements. Some embodiments may implement multiple integrated circuits coupled together to implement the hardware circuit, and / or discrete components may be used in some embodiments.

[0057] While specific embodiments of this disclosure have been illustrated in detail by way of examples, those skilled in the art should understand that the examples are intended to be illustrative only and do not limit the scope of this disclosure. It should be recognized that some steps in the foregoing methods are not necessarily performed in the order shown in the figures, but may be performed simultaneously, in different orders, or in an overlapping manner. Furthermore, those skilled in the art may add or omit steps as needed. Some components in the foregoing system are not necessarily arranged as shown in the figures; those skilled in the art may add or omit components as needed. Those skilled in the art should understand that the foregoing embodiments can be modified without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. An electromagnetic multi-column based vehicle testing system, characterized by, The vehicle testing system comprises: an electromagnetic multi-column device carrying the vehicle under test, wherein each column of the electromagnetic multi-column device carries one wheel of a plurality of wheels of the vehicle under test; a plurality of sensors, each of which is arranged at one wheel of the plurality of wheels of the vehicle under test; and a data acquisition device acquiring sensing results of the plurality of sensors; wherein each of the plurality of sensors is isolated from the corresponding wheel by at least an insulating member; wherein each of the plurality of sensors is electromagnetically shielded by one of a plurality of first electromagnetic shielding devices, and the data acquisition device is electromagnetically shielded by a second electromagnetic shielding device; wherein the electromagnetic multi-column device, the plurality of sensors, the data acquisition device, the plurality of first electromagnetic shielding devices, the second electromagnetic shielding device, and the vehicle under test are connected to ground.

2. The vehicle testing system according to claim 1, wherein the data acquisition device has a plurality of outputs for outputting the acquired sensing results of the plurality of sensors, and the plurality of outputs of the data acquisition device are connected to the same potential.

3. The vehicle testing system of claim 2, wherein, The plurality of outputs of the data acquisition device are connected to the same potential by a conductive cable.

4. The vehicle testing system of claim 2, wherein, The plurality of outputs of the data acquisition device are connected to the same potential by an equipotential connector.

5. The vehicle testing system of claim 1, wherein, Each of the plurality of sensors comprises an acceleration sensor for measuring acceleration of the corresponding wheel in a vertical direction.

6. The vehicle testing system of claim 1, wherein, The insulating member comprises an insulating rigid member.

7. The vehicle testing system of claim 1, wherein, The insulating member comprises a cured insulating adhesive.

8. The vehicle testing system of claim 1, wherein, Each of the plurality of first electromagnetic shielding devices comprises an electromagnetic shielding box, and each of the plurality of sensors is arranged within the corresponding electromagnetic shielding box.

9. The vehicle testing system of claim 1, wherein, The second electromagnetic shielding device comprises an electromagnetic shielding box, and the data acquisition device is arranged within the electromagnetic shielding box.

10. The vehicle testing system of claim 1, wherein, The ground terminals of the electromagnetic multi-column device, the plurality of sensors, the data acquisition device, the plurality of first electromagnetic shielding devices, the second electromagnetic shielding device, and the vehicle under test are connected to a ground terminal of a controller of the electromagnetic multi-column device.

11. The vehicle testing system of claim 1, wherein, Each of the plurality of sensors is fixed on a nut end surface of a brake caliper associated with the corresponding wheel.

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