A device for simulating steering driving actions

Abstract

The application provides a device for simulating steering driving action, comprising a main body, a motor, a torque sensor, a steering wheel clamp and a first wireless module and a second wireless module and a signal acquisition module. The main body comprises a shell and a transmission shaft arranged in the shell. The motor comprises a stator and a rotor. The stator is connected with the shell, and the rotor is connected with the transmission shaft. The torque sensor is connected with the transmission shaft. The steering wheel clamp is connected with the torque sensor away from the transmission shaft, and is used for clamping a measured steering wheel. The first wireless module is arranged on one side of the shell facing the transmission shaft. The second wireless module is arranged on the transmission shaft. The signal acquisition module is arranged on the torque sensor, and transmits a torque signal to the first wireless module wirelessly. The first wireless module supplies power to the second wireless module. The second wireless module supplies power to the signal acquisition module and the torque sensor. The application avoids the interference of wires on the torque signal through wireless power supply, wireless signal transmission and high integration, so as to improve the steering torque measurement accuracy.

Description

Technical Field

[0001] This application relates to the field of intelligent driving test equipment technology, specifically to a device for simulating steering and driving actions. Background Technology

[0002] During the vehicle research and development and testing phase, especially for testing autonomous driving functions, a device is needed that can accurately and automatically simulate the steering wheel movements of a human driver. This device needs to be clamped onto the original steering wheel of the vehicle under test (referred to as the "steering wheel under test"), and output torque and steering angle through its internal drive mechanism, while measuring the torque applied to the steering wheel in real time to verify the response of the vehicle's steering system or the control effect of the autonomous driving algorithm.

[0003] In existing technologies, to power and transmit signals to torque sensors mounted on rotating components (such as steering wheel shafts), contact-type electrical connections such as power supply slip rings or power supply brushes are typically used. However, during prolonged, high-frequency rotation of the steering wheel, these contact components generate continuous mechanical friction with the torque sensor. This friction not only leads to wear of the contact components and reduces system reliability, but more importantly, the resulting frictional resistance directly interferes with the force state of the torque sensor, introducing additional measurement errors and severely affecting the accuracy of torque detection.

[0004] Therefore, there is a need to develop a device that can simulate steering and driving actions with better reliability and testing accuracy. Utility Model Content

[0005] The main objective of this application is to provide a device for simulating steering and driving actions with better reliability and testing accuracy.

[0006] To achieve the above objectives, the device for simulating steering and driving actions proposed in this application includes: a main body comprising a housing and a drive shaft passing through the housing; a motor comprising a stator and a rotor; the stator being connected to the housing and the rotor being connected to the drive shaft; a torque sensor connected to the drive shaft; a steering wheel clamp connected to the side of the torque sensor away from the drive shaft for clamping the steering wheel to be tested; a first wireless module disposed on the side of the housing facing the drive shaft; a second wireless module disposed on the drive shaft; and a signal acquisition module disposed on the torque sensor for acquiring the torque signal from the torque sensor and wirelessly transmitting the torque signal to the first wireless module; wherein the first wireless module and the second wireless module are spaced apart and can rotate relative to each other, the first wireless module supplies power to the second wireless module, and the second wireless module supplies power to the signal acquisition module and the torque sensor.

[0007] Preferably, one side of the steering wheel clamp is coaxially connected to the torque sensor, and the side of the steering wheel clamp away from the torque sensor is used to hold the steering wheel being tested.

[0008] Preferably, the outer casing is open at both ends to accommodate the drive shaft, the outer casing is annular and has a first accommodating space inside, and the motor is accommodated in the first accommodating space.

[0009] Preferably, the annular surface of the housing facing the drive shaft has a notch, and the drive shaft passes through the notch and connects to the rotor within the first accommodating space; one end of the drive shaft is spaced apart from the annular surface of the housing facing the drive shaft.

[0010] Preferably, the drive shaft includes a first connector, a main shaft, and a second connector that are coaxially connected in sequence; the end of the first connector away from the main shaft is used to set a simulated steering wheel, and the end of the second connector away from the main shaft is connected to a torque sensor.

[0011] Preferably, the first connector is connected to the rotor of the motor within the first accommodating space.

[0012] Preferably, a second accommodating space is formed between the housing and the drive shaft, and the first wireless module and the second wireless module are accommodated in the second accommodating space.

[0013] Preferably, the second connector closes the bottom opening of the housing to form a second accommodating space together with the housing and the main shaft.

[0014] Preferably, the first wireless module, the second wireless module, and the signal acquisition module are arranged sequentially around the axis of the drive shaft.

[0015] Preferably, the steering wheel clamp includes a clamp body, and a plurality of claws capable of extending and retracting radially along the clamp body are arranged around the clamp body.

[0016] This application discloses a device for simulating steering driving actions, comprising: a main body including a housing and a drive shaft passing through the housing; a motor including a stator and a rotor; the stator being connected to the housing and the rotor being connected to the drive shaft; a torque sensor connected to the drive shaft; a steering wheel clamp connected to the side of the torque sensor away from the drive shaft for clamping the steering wheel to be measured; a first wireless module disposed on the side of the housing facing the drive shaft; a second wireless module disposed on the drive shaft; a signal acquisition module disposed on the torque sensor for wirelessly transmitting torque signals to the first wireless module; the first wireless module supplying power to the second wireless module via wireless transmission; and the second wireless module supplying power to the signal acquisition module and the torque sensor after receiving electrical energy. This application, through wireless power supply, wireless signal transmission, and a highly integrated design, avoids interference from wires on the torque signal, thereby improving the accuracy of steering torque measurement. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A cross-sectional view of the main body of the device for simulating steering and driving actions according to an embodiment of this application, and a simulated steering wheel;

[0019] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0020] Figure 3 This is a schematic diagram of the internal structure of the device for simulating steering and driving actions according to an embodiment of this application, after removing the motor, the first wireless module, the second wireless module, and the signal acquisition module;

[0021] Figure 4 This is a schematic diagram of an embodiment of the device for simulating steering and driving actions according to this application.

[0022] Figure 5 This is a bottom view of the torque sensor according to an embodiment of this application;

[0023] Figure 6 This is a top view of the torque sensor according to an embodiment of this application;

[0024] Figure 7 This is a top view of the steering wheel clamp according to an embodiment of this application;

[0025] Figure 8 This is a schematic diagram of a steering wheel clamp holding a steering wheel according to an embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the claw-based clamping method according to an embodiment of this application;

[0027] Figure 10 This is a schematic diagram of the gripper clamping method in an embodiment of this application.

[0028] Explanation of icon numbers:

[0029] 1. Main body; 101. Outer shell; 102. Stator; 103. Rotor; 104. Drive shaft; 1041. First connecting piece; 1042. Main shaft; 1043. Second connecting piece; 2. Fixed bracket; 3. Steering wheel clamp; 31. Clamp body; 311. First scale structure; 312. Second scale structure; 32. Claw; 33. Connecting piece; 4. Torque sensor; 401. Pin hole; 402. Connecting hole; 5. Simulated steering wheel; 6. Fastener; 7. First wireless module; 8. Second wireless module; 9. Signal acquisition module; 10. Bearing; 11. First accommodating space; 12. Second accommodating space; 13. Lower shell; 14. Steering wheel under test.

[0030] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Furthermore, the technical solutions of the various embodiments of this application can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.

[0036] This application proposes a device for simulating steering and driving actions.

[0037] Please refer to Figures 1 to 10 The device for simulating steering and driving actions includes: a main body 1, including a housing 101 and a drive shaft 104 passing through the housing 101.

[0038] The motor, located inside the main body 1, includes a stator 102 and a rotor 103. The stator 102 is connected to the outer casing 101, and the rotor 103 is connected to the drive shaft 104. It should be noted that the motor has a ring-shaped hollow structure, with the stator 102 fixed to the inner ring surface of the outer casing 101. The rotor 103 is coaxially disposed inside the stator 102 and fixedly connected to the drive shaft 104, which passes through the outer casing 101, thus forming a channel inside the motor for the drive shaft 104 to pass through and rotate.

[0039] A torque sensor 4 is located inside the main body 1 and connected to the drive shaft 104. A steering wheel clamp 3 is connected to the side of the torque sensor 4 away from the drive shaft 104 and is used to clamp the steering wheel 14 under test to obtain the torque signal of the steering wheel 14 and / or simulate steering driving actions. That is, the drive shaft 104, torque sensor 4, and steering wheel clamp 3 are connected sequentially from top to bottom.

[0040] The first wireless module 7 is disposed on the side of the housing 101 facing the drive shaft 104. The second wireless module 8 is disposed on the drive shaft 104. The signal acquisition module 9 is disposed on and connected to the torque sensor 4, and is used to acquire the torque signal from the torque sensor 4 and wirelessly transmit the torque signal to the first wireless module 7. The first wireless module 7 and the second wireless module 8 are spaced apart and can rotate relative to each other. The first wireless module 7 supplies power to the second wireless module 8 wirelessly. The second wireless module 8, after receiving power, supplies power to the signal acquisition module 9 and the torque sensor 4. Preferably, the first wireless module 7, the second wireless module 8, and the signal acquisition module 9 are all functional circuit boards.

[0041] In this application's technical solution, the first wireless module 7 is fixedly mounted on the housing 101. It receives DC power from an external control box (not shown) via a wired connection and inverts the DC power into an alternating magnetic field for external transmission. Simultaneously, the first wireless module 7 integrates a wireless signal receiving unit for receiving torque data transmitted from the signal acquisition module 9. The second wireless module 8 is fixedly mounted on the drive shaft 104, maintaining a gap with the first wireless module 7. When the alternating magnetic field emitted by the first wireless module 7 passes through this gap, the induction coil on the second wireless module 8 generates an induced electromotive force. After rectification and voltage regulation, this is converted into stable DC power to supply the signal acquisition module 9 and the torque sensor 4. The signal acquisition module 9 is mounted on the torque sensor 4 and is powered by the second wireless module 8. The signal acquisition module 9 acquires the torque signal generated by the torque sensor 4, amplifies it, converts it into a digital signal, and transmits the torque data to the first wireless module 7 via its built-in wireless transmission unit (not shown), thus completing non-contact signal transmission.

[0042] Since no wires or contacts are needed for physical contact between the first wireless module 7 and the second wireless module 8, as well as between them and the torque sensor 4, this application eliminates the additional torque interference and component wear problems caused by mechanical friction compared to the existing technology that uses conductive slip rings or brushes, thereby improving the accuracy of torque measurement and the reliability of the equipment.

[0043] Preferably, the signal acquisition module 9 is equipped with a first wireless transmission unit, such as a 2.4G module, which packages, modulates, and transmits the acquired torque signal. The first wireless module 7 is equipped with a second wireless transmission unit, such as a 2.4G module, for receiving and demodulating the torque signal transmitted by the signal acquisition module 9.

[0044] Please refer to Figure 1 and Figure 3 One side of the steering wheel clamp 3 is coaxially connected to the torque sensor 4, and the side of the steering wheel clamp 3 away from the torque sensor 4 is used to hold the steering wheel 14 being tested. The motor, drive shaft 104, torque sensor 4 and steering wheel clamp 3 are arranged in a direct connection, forming a direct power and torque transmission path, which improves the response speed and accuracy of torque measurement.

[0045] Preferably, the housing 101 and the drive shaft 104 are rotatably connected via a bearing 10. The housing 101 is vertically continuous to accommodate the drive shaft 104. The housing 101 is annular and has a first accommodating space 11 inside, within which the motor is housed. In this embodiment, the rotatable connection between the housing 101 and the drive shaft 104 is achieved via the bearing 10. Combined with the vertically continuous annular structure of the housing 101 and the first accommodating space 11 inside, the motor is housed within the first accommodating space 11. This allows the device to maintain smooth rotation of the drive shaft 104 while reducing its radial dimension and overall volume, achieving a highly integrated layout that can adapt to limited in-vehicle installation space.

[0046] Preferably, the annular surface of the outer casing 101 facing the drive shaft 104 has a notch, through which the drive shaft 104 passes into the first accommodating space 11 and connects to the rotor 103; one end of the drive shaft 104 is spaced apart from the annular surface of the outer casing 101 facing the drive shaft 104. In this embodiment, by providing a notch on the annular surface of the outer casing 101 facing the drive shaft 104, the drive shaft 104 can be radially inserted and connected to the rotor 103 in the first accommodating space 11, realizing the power transmission between the motor and the drive shaft 104 in a compact space. At the same time, the spaced arrangement between the end face of the drive shaft 104 and the annular surface of the outer casing 101 can be used to accommodate a wireless module, thereby further improving the utilization rate and integration of the internal space of the device while ensuring a stable drive connection.

[0047] Preferably, the device for simulating steering and driving actions further includes a simulated steering wheel 5, installed at the end of the main body 1 away from the steering wheel clamp 3, for operation by the tester to control the vehicle's steering. For example... Figure 3 As shown, the drive shaft 104 includes a first connecting member 1041, a main shaft 1042, and a second connecting member 1043, which are coaxially connected in sequence. The end of the first connecting member 1041 away from the main shaft 1042 is used to mount the simulated steering wheel 5, and the end of the second connecting member 1043 away from the main shaft 1042 is connected to the torque sensor 4. In this embodiment, the drive shaft 104, consisting of a three-section structure formed by the first connecting member 1041, the main shaft 1042, and the second connecting member 1043 coaxially connected in sequence, makes the mounting end of the simulated steering wheel 5, the motor rotor drive end, and the connection end of the torque sensor 4 independent and functionally distinct, facilitating modular assembly and maintenance of each functional component.

[0048] Preferably, the first connector 1041 is connected to the rotor 103 of the motor within the first accommodating space 11, so that the driving torque output by the motor is directly transmitted to the transmission shaft 104, reducing power transmission loss and making full use of the internal space of the annular structure of the housing 101, ensuring the response speed and transmission accuracy of steering action while achieving a compact layout.

[0049] Preferably, a second accommodating space 12 is formed between the outer casing 101 and the drive shaft 104, and the first wireless module 7 and the second wireless module 8 are accommodated within the second accommodating space 12. Specifically, the second accommodating space 12 is formed between the lower part of the drive shaft 104 and the lower end of the annular surface of the outer casing 101 facing the drive shaft 104. In this way, a closed cavity for installing the wireless modules is formed without increasing the overall size of the device, achieving a compact layout, preventing damage to the wireless modules from external dust and mechanical impacts, and ensuring the stability of the gap between the two wireless modules, thereby improving the reliability and anti-interference capability of wireless power supply and signal transmission.

[0050] Preferably, the first connector 1041 passes through the first accommodating space 11 and connects to the rotor 103 of the motor, and the second connector 1043 closes the bottom opening of the outer shell 101, so that the outer shell 101 and the main shaft 1042 together form the second accommodating space 12. This provides a sealed mounting cavity for the wireless module without the need for additional structures, simplifying the number of parts, reducing assembly complexity, achieving integrated layout, and improving the space utilization and structural reliability of the device. In this embodiment, a lower housing 13 is also included, disposed between the torque sensor 4 and the steering wheel clamp 3, to protect the torque sensor 4 from impacts or wear.

[0051] Preferably, the first wireless module 7, the second wireless module 8, and the signal acquisition module 9 are arranged sequentially around the axis of the drive shaft 104. The first wireless module 7, the second wireless module 8, and the signal acquisition module 9 are all arranged in parallel and spaced intervals. The modular layout of each functional motherboard is parallel and spaced, which is beneficial for heat dissipation, electromagnetic compatibility optimization, and independent maintenance and replacement of modules, thereby improving the stability and maintainability of the system.

[0052] Preferably, please refer to Figure 1 and Figure 4 The mounting bracket 2 includes a telescopic link and a suction cup. The end of the telescopic link away from the suction cup is connected to the housing 101. The suction cup is used to fix the device to the vehicle under test. By using the mounting bracket 2 as a fixing mechanism, a quick, non-destructive, and secure connection between the device simulating steering and driving actions and the test vehicle is achieved. It can also be adapted to the interior space of different vehicle models, improving the efficiency of test preparation.

[0053] Preferably, the torque sensor 4 is located at the bottom of the main body 1. The top of the steering wheel clamp 3 is coaxially connected to the torque sensor 4, and the bottom is used to clamp the vehicle's original steering wheel 14 being tested. Please refer to... Figure 5 and Figure 6The steering wheel clamp 3 and the torque sensor 4 are positioned by a locating pin and a pin hole 401, and connected by a fastener 6 arranged axially along the steering wheel clamp 3. The locating pin is set on the steering wheel clamp 3, and the pin hole 401 is correspondingly set on the bottom surface of the output end of the torque sensor 4. The second connector 1043 is connected to the connection hole 402 on the top surface of the input end of the torque sensor 4. In this way, the steering wheel clamp 3 and the torque sensor 4 can be radially and quickly positioned, which speeds up the installation of the equipment, and the axial fastener 6 can be reliably locked.

[0054] In this embodiment, the torque sensor 4 is a strain gauge torque sensor 4, and its detection unit is a Wheatstone bridge containing four strain bridge arms. Using a high-sensitivity Wheatstone full-bridge strain gauge, it can accurately convert minute deformations into electrical signals, featuring high measurement accuracy, good linearity, and excellent temperature compensation performance, thus meeting the requirements for high-precision torque testing.

[0055] Preferably, the steering wheel clamp 3 includes a clamp body 31, and a plurality of claws 32 capable of radially extending and retracting along the clamp body 31 are arranged around the clamp body 31. Please refer to Figure 7 and Figure 8 The chuck 32 is connected to the clamp body 31 via a connector 33. The connector 33 is radially arranged along the clamp body 31 and can extend and retract radially along the clamp body 31, thereby driving the chuck 32 to extend and retract radially along the clamp body 31. A first scale structure 311 is provided between the two ends of the connector 33. The first scale structure 311 includes multiple scale lines arranged along the length direction of the connector 33. A second scale structure 312 for centering is provided on the top surface of the clamp body 31. The second scale structure 312 includes multiple scale lines concentrically arranged with the clamp body 31. By integrating the second scale structure 312 for centering onto the clamp body 31, compared with the prior art of separately setting a centering chassis, the structure of the present application is simpler, the installation and centering operation are more convenient, and the vertical thickness of the steering wheel clamp 3 can be reduced.

[0056] Please refer to Figure 9 and Figure 10 In this embodiment, one side of the chuck 32 has a clamping side for pressing against the surface of the steering wheel 14 to be tested. The upper end of the chuck 32 is fixed to the connector 33 by a fastening element. When the fastening element is loosened, the chuck 32 can rotate to adjust the orientation of the clamping side, so that the chuck 32 has two clamping methods: inner clamping method: the clamping side of the chuck 32 faces inward, that is, towards the middle of the clamping body 31 to clamp the steering wheel 14 to be tested. At this time, the chuck 32 is located outside the steering wheel 14 to be tested; outer clamping method: the clamping side of the chuck 32 faces outward, that is, away from the middle of the clamping body 31 to clamp the steering wheel 14 to be tested. At this time, the chuck 32 is located inside the steering wheel 14 to be tested.

[0057] Compared to the internal clamping method, the external clamping method can accommodate steering wheels 14 with larger diameters. Different jaws 32 on the fixture body 31 can use different clamping methods at the same time to clamp the steering wheel 14. With the retractable jaws 32, the fixture body 31 can clamp more steering wheels 14 of different sizes.

[0058] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A device for simulating steering and driving actions, characterized in that, include: The main body (1) includes a housing (101) and a drive shaft (104) passing through the housing (101). The motor includes a stator (102) and a rotor (103); the stator (102) is connected to the housing (101), and the rotor (103) is connected to the drive shaft (104); A torque sensor (4) is connected to the drive shaft (104); Steering wheel clamp (3) is connected to the side of the torque sensor (4) away from the drive shaft (104) and is used to clamp the steering wheel (14) being tested. The first wireless module (7) is disposed on the side of the housing (101) facing the drive shaft (104); The second wireless module (8) is disposed on the drive shaft (104). The signal acquisition module (9) is installed on the torque sensor (4) and is used to acquire the torque signal of the torque sensor (4) and wirelessly transmit the torque signal to the first wireless module (7). The first wireless module (7) and the second wireless module (8) are spaced apart and can rotate relative to each other. The first wireless module (7) supplies power to the second wireless module (8). The second wireless module (8) supplies power to the signal acquisition module (9) and the torque sensor (4).

2. The device according to claim 1, characterized in that, One side of the steering wheel clamp (3) is coaxially connected to the torque sensor (4), and the side of the steering wheel clamp (3) away from the torque sensor (4) is used to clamp the steering wheel (14) being tested.

3. The device according to claim 1, characterized in that, The outer casing (101) extends vertically to accommodate the drive shaft (104). The outer casing (101) is annular and has a first accommodating space (11) inside. The motor is housed within the first accommodating space (11).

4. The device according to claim 3, characterized in that, The outer casing (101) has a notch on its annular surface facing the drive shaft (104), and the drive shaft (104) passes through the notch and connects to the rotor (103) within the first accommodating space (11); one end of the drive shaft (104) is spaced apart from the annular surface of the outer casing (101) facing the drive shaft (104).

5. The device according to claim 3, characterized in that, The drive shaft (104) includes a first connector (1041), a main shaft (1042), and a second connector (1043) connected coaxially in sequence; the end of the first connector (1041) away from the main shaft (1042) is used to set a simulated steering wheel (5), and the end of the second connector (1043) away from the main shaft (1042) is connected to the torque sensor (4).

6. The device according to claim 5, characterized in that, The first connector (1041) is connected to the rotor (103) of the motor within the first accommodating space (11).

7. The device according to claim 5, characterized in that, A second accommodating space (12) is formed between the outer casing (101) and the drive shaft (104), and the first wireless module (7) and the second wireless module (8) are accommodated in the second accommodating space (12).

8. The device according to claim 7, characterized in that, The second connector (1043) closes the bottom opening of the housing (101) to form the second accommodating space (12) together with the housing (101) and the main shaft (1042).

9. The device according to claim 1, characterized in that, The first wireless module (7), the second wireless module (8), and the signal acquisition module (9) are arranged sequentially around the axis of the transmission shaft (104).

10. The device according to claim 1, characterized in that, The steering wheel clamp (3) includes a clamp body (31) with a plurality of claws (32) that can extend and retract radially along the clamp body (31) arranged around it.

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