An ADAS drive-by-wire chassis with intelligent driving domain for convenient offline debugging

Abstract

The application provides a drive-by-wire chassis with intelligent driving domain ADAS for offline debugging, which comprises a drive-by-wire throttle, a pedal assembly, a controller assembly and a motor assembly which are sequentially connected in communication, and an ECU integrated in the controller assembly and connected with a vehicle computer in communication; the pedal assembly comprises a mounting block and a mounting strip hingedly connected to the mounting block, a pedal is arranged at a movable end of the mounting strip, the middle part of the mounting strip is bent downward, a hinged rod is rotatably connected to the bent section, a test block is fixed below the mounting block, a roller is connected to a movable end of the hinged rod, an elastic member for resetting the hinged rod is arranged on the connection end of the hinged rod and the mounting strip, the roller abuts against a side wall of the test block, and an encoder is arranged on one side of the mounting strip and faces the roller. The application has the effect of improving the efficiency of offline debugging of the drive-by-wire chassis.

Description

Technical Field

[0001] This invention relates to the field of drive-by-wire chassis technology, and in particular to a drive-by-wire chassis with an intelligent driving domain ADAS that is easy to debug offline. Background Technology

[0002] As a crucial subsystem within the steer-by-wire chassis, the cruise control function in the intelligent driving domain of new energy vehicles is based on the steer-by-wire system. Before a vehicle leaves the factory, the steer-by-wire system needs to be tested. The testing equipment needs to be connected to a displacement sensor, ECU, data bus, and photoelectric encoder on the motor. By repeatedly pressing the pedal through the pedal mechanism, the signals and corresponding speeds fed back by the displacement sensor, ECU, data bus, and photoelectric encoder on the motor are compared with the pedal depth and frequency by the pedal mechanism. The obtained data is then compared with standards in a database to adjust the steer-by-wire system. During this adjustment process, the connection between the output end of the pedal mechanism and the pedal needs to be highly precise to avoid errors during pedal pressing. This installation process is time-consuming and requires repeated testing, extending the steer-by-wire system adjustment time and resulting in low adjustment efficiency for the steer-by-wire chassis, thus impacting production capacity. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a drive-by-wire chassis with an intelligent driving domain that is convenient for offline debugging. It solves the problem that the connection and installation process between the pedal and the pedal device is time-consuming during the debugging of the drive-by-wire throttle, resulting in low overall debugging efficiency of the drive-by-wire chassis.

[0004] According to an embodiment of the present invention, a drive-by-wire chassis with an intelligent driving domain ADAS that is convenient for offline debugging includes a drive-by-wire throttle. The drive-by-wire throttle includes a pedal assembly, a controller assembly, and a motor assembly that are connected in sequence via communication. The ECU is integrated into the controller assembly, and the controller assembly is connected to the vehicle's onboard computer via communication. The pedal assembly includes a mounting block and a mounting strip hinged to the mounting block. A pedal is provided at the movable end of the mounting strip. The middle of the mounting strip is bent downward, and a hinge rod is rotatably connected to the bent section. A test block is fixed directly below the mounting block. A roller is connected to the movable end of the hinge rod. An elastic element for hinge rod reset is provided at the connection end between the hinge rod and the mounting strip. The roller abuts against the side wall of the test block. An encoder with a detection port facing the roller is provided on one side of the mounting strip.

[0005] Preferably, the roller is a long gear, and the contact wall between the test block and the long gear is provided with a rack that meshes with the long gear.

[0006] Preferably, the mounting strip has hinge rods on both sides, and a mounting shaft is fixedly disposed between the two hinge rods, with the long gear rotatably mounted on the mounting shaft.

[0007] Preferably, the encoder is fixedly mounted on the mounting shaft, with the detection end of the encoder facing the end wall of the long gear.

[0008] Preferably, the end wall of the long gear is provided with angle scale lines.

[0009] Preferably, the elastic element is a torsion spring sleeved on the hinge shaft between the hinge rod and the mounting strip, with the two ends of the torsion spring fixedly connected to the hinge rod and the mounting strip, respectively.

[0010] Preferably, an infrared receiver is provided on the top of the test block, and an infrared transmitter is provided on the bottom of the mounting block.

[0011] Preferably, an electromagnetic coil is provided at the bottom of the test block.

[0012] Preferably, the encoder of the motor assembly is communicatively connected to the controller assembly.

[0013] Compared with the prior art, the present invention has the following beneficial effects: By directly installing a hinge rod on the pedal mounting strip and rotating the mounting roller via the hinge rod, and by setting an encoder on the mounting shaft of the roller and placing a test block below the mounting block, when the pedal is pressed, due to the elastic element between the hinge rod and the mounting strip, the mounting strip rotates downwards, causing the connecting end between the hinge rod and the mounting strip to move downwards, which in turn causes the roller to roll upwards along the test block. By detecting the rotation angle of the roller, the corresponding rotation angle of the mounting strip and the pedal pressing depth are obtained. The rotor speed in the generator assembly corresponding to the pedal pressing depth is linearly fitted, and the obtained curve is compared with the standard data set in the database, so that the offline debugging of the throttle-by-wire system can be performed. The installation position of the hinge rod is fixed, and the installation of the test block corresponds to the position of the mounting block, so the installation of the test block can be completed quickly. The pedal is pressed manually, which improves the debugging efficiency of the throttle-by-wire system, and thus improves the offline debugging efficiency of the throttle-by-wire chassis. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the pedal structure in an embodiment of the present invention.

[0016] In the above attached figures: 1. Pedal assembly; 11. Mounting block; 12. Mounting strip; 13. Test block; 14. Hinge rod; 15. Long gear; 2. Controller assembly; 3. Motor assembly. Detailed Implementation

[0017] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1 and Figure 2 As shown. This invention proposes a drive-by-wire chassis with an intelligent driving domain ADAS that is convenient for offline debugging. It includes a drive-by-wire throttle, which comprises a pedal assembly 1, a controller assembly 2, and a motor assembly 3 connected in sequence. The ECU is integrated into the controller assembly 2, and the controller assembly 2 is connected to the vehicle's computer. The pedal assembly 1 includes a mounting block 11 and a mounting strip 12 hinged to the mounting block 11. A pedal is provided at the movable end of the mounting strip 12. The middle of the mounting strip 12 is bent downward, and a hinge rod 14 is rotatably connected to the bent section. A test block is fixed directly below the mounting block 11. A roller is connected to the movable end of the hinge rod 14. An elastic element for resetting the hinge rod 14 is provided at the connection end between the hinge rod 14 and the mounting strip 12. The roller abuts against the side wall of the test block. An encoder with a detection port facing the roller is provided on one side of the mounting strip 12.

[0019] The ECU of the throttle-by-wire system is integrated into the controller assembly 2. The on-board computer sends control signals to the controller assembly 2, which in turn controls the electric motor assembly 3 to control the wheel speed.

[0020] When debugging the drive-by-wire throttle, the hinge rod 14 is attached to the mounting strip 12. The test block 13 is then installed according to the set installation position, with the roller abutting against the side wall of the test block 13. At this time, the elastic element between the hinge rod 14 and the mounting strip 12 is under pressure. The debugging personnel directly step on the pedal, causing the mounting strip 12 to rotate around the pivot between the mounting strip 12 and the mounting block 11. The mounting strip 12 drives the hinge end of the hinge rod 14 to move downwards. During this movement, the movable end of the mounting strip 12 will move closer to the test block 13. At this time, the roller on the hinge rod 14 moves upward along the test block 13, and an encoder is fixedly installed at the end of the roller mounting shaft. The photoelectric port of the encoder faces the roller to detect the rotation angle of the roller. The rotation angle of the mounting strip 12 is obtained from the rotation angle of the roller, and then the pedal depth is obtained. The above data is recorded, and these data are linearly fitted with the rotor speed obtained by the encoder on the motor assembly 3 to obtain the pedal speed curve. The obtained pedal speed curve is compared with the set pedal speed curve to adjust the wire-controlled throttle.

[0021] After completing the debugging, the hinge rod 14 and the test block 13 were removed to complete the factory debugging of the wire-controlled throttle.

[0022] like Figure 1 and Figure 2As shown, to improve the rotational stability between the roller and the test block 13, the roller is a long gear 15, and a rack is provided on the contact wall between the test block 13 and the long gear 15 to mesh with the long gear 15. By using a gear and rack meshing method, the long gear 15 will not slip due to the frequency of stepping during the rotation of the mounting strip 12, ensuring the accuracy of the data obtained by the encoder on the mounting shaft of the long gear 15.

[0023] In a preferred embodiment of the present invention, to improve the stability of the long gear 15 installation, hinge rods 14 are provided on both sides of the mounting strip 12, and a mounting shaft is fixedly provided between the two hinge rods 14, with the long gear 15 rotatably mounted on the mounting shaft.

[0024] In a preferred embodiment of the present invention, to facilitate encoder installation, the encoder is fixedly mounted on the mounting shaft, with the encoder's detection end facing the end wall of the long gear 15. The encoder is directly fixed to the mounting shaft of the long gear 15, simplifying installation and ensuring that the encoder's detection end is directly facing the end wall of the long gear 15.

[0025] In a preferred embodiment of the present invention, to further improve the detection accuracy, angle scale lines are provided on the end wall of the long gear 15.

[0026] In a preferred embodiment of the present invention, to ensure that the hinge rod 14 is rotatably mounted on the mounting strip 12 and that the long gear 15 on the hinge rod 14 is stably engaged with the rack on the end face of the test block 13, the elastic element is a torsion spring sleeved on the hinge shaft between the hinge rod 14 and the mounting strip 12, with both ends of the torsion spring fixedly connected to the hinge rod 14 and the mounting strip 12 respectively.

[0027] In a preferred embodiment of the present invention, to ensure accurate installation of the test block 13, an infrared receiver is provided on the top of the test block 13, and an infrared transmitter is provided on the bottom of the mounting block 11.

[0028] In a preferred embodiment of the present invention, to improve the stability of the test block 13 during installation, an electromagnetic coil is provided at the bottom of the test block 13. When energized, the electromagnetic coil forms an electromagnet, stably attracting the test block 13 to the underside of the mounting block 11.

[0029] In a preferred embodiment of the present invention, the encoder of the motor assembly 3 is communicatively connected to the controller assembly 2. The controller assembly 2 is connected to the vehicle computer, and the debugging equipment is also connected to the vehicle computer. The vehicle computer sends the rotational speed signal of the motor assembly 3 to the controller assembly 2, and the encoder on the motor assembly 3 detects the rotor speed. By comparing the detected speed with the controlled speed, the intelligent driving function is debugged and verified.

Claims

1. A drive-by-wire chassis with intelligent driving domain ADAS that is easy to debug offline, including a drive-by-wire throttle, characterized in that: The throttle by wire includes a pedal assembly (1), a controller assembly (2), and a motor assembly (3) connected in sequence. The ECU is integrated into the controller assembly (2), and the controller assembly (2) is connected to the vehicle computer. The pedal assembly (1) includes a mounting block (11) and a mounting strip (12) hinged to the mounting block (11). The movable end of the mounting strip (12) is provided with a pedal. The middle part of the mounting strip (12) is bent downward and a hinge rod (14) is rotatably connected to the bent section. A test block is fixed directly below the mounting block (11). The movable end of the hinge rod (14) is connected to a roller. An elastic element for resetting the hinge rod (14) is provided on the connection end between the hinge rod (14) and the mounting strip (12). The roller abuts against the side wall of the test block. An encoder with a detection port facing the roller is provided on one side of the mounting strip (12). The roller is a long gear (15), and the test block (13) and the long gear (15) have a rack that meshes with the long gear (15) on their contact wall. The mounting strip (12) has hinge rods (14) on both sides, and a mounting shaft is fixedly provided between the two hinge rods (14). The long gear (15) is rotatably mounted on the mounting shaft. The encoder is fixedly mounted on the mounting shaft, with the detection end of the encoder facing the end wall of the long gear (15); Angle scale lines are provided on the end wall of the long gear (15).

2. The ADAS drive-by-wire chassis with intelligent driving domain that is convenient for offline debugging as described in claim 1, characterized in that: The elastic element is a torsion spring sleeved on the hinge shaft between the hinge rod (14) and the mounting strip (12), with the two ends of the torsion spring fixedly connected to the hinge rod (14) and the mounting strip (12) respectively.

3. The ADAS drive-by-wire chassis with intelligent driving domain that is convenient for offline debugging as described in claim 1, characterized in that: An infrared receiver is provided on the top of the test block (13), and an infrared transmitter is provided on the bottom of the mounting block (11).

4. The ADAS drive-by-wire chassis with intelligent driving domain that is convenient for offline debugging as described in claim 3, characterized in that: An electromagnetic coil is provided at the bottom of the test block (13).

5. The ADAS drive-by-wire chassis with intelligent driving domain that is convenient for offline debugging as described in claim 1, characterized in that: The encoder of the motor assembly (3) is communicatively connected to the controller assembly (2).

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