CN115482693A - A commercial vehicle road test detection technology training method and device - Google Patents

Abstract

The invention provides a training method and a training device for a road test detection technology of a commercial vehicle, which comprises the following steps: s1, a detection end collects voice information and operation image information of detection personnel and sends the voice information and the operation image information to a learning end, the learning end receives, plays and displays the voice information and the operation image information, and a student simulates the operation of the learning detection personnel at the learning end and simulates preparation work of a test in a virtual scene; and S2, the detection end collects scene information of the dynamic test road condition and transmits the scene information to the learning end in real time, and the students perform dynamic simulation test operation under a simulation scene according to the scene information collected in real time. According to the invention, the detection work flow is acquired in the whole process and transmitted to the learning end for display, the consistency of the detection end and the learning end is high, the operation of the learning end and the test of a student are synchronously carried out, the simultaneous and synchronous learning of multiple persons is realized, and the popularization of the detection method is facilitated.

Description

A commercial vehicle road test detection technology training method and device

technical field

The invention belongs to the technical field of vehicle detection and teaching, and in particular relates to a commercial vehicle road test detection technology training method and device.

Background technique

With the rapid development of my country's economy, a large number of commercial vehicles such as freight vehicles and engineering vehicles are widely used. The commercial vehicle road test is an important means to test whether the vehicle is safe or not. Due to the complex application conditions of the vehicle, the test conditions are relatively harsh, the test process is complicated, and the risk factor is high. One check (one driver and one inspector). Learners cannot intuitively learn from the first perspective, resulting in poor learning effects and low teaching efficiency, which increases the limitations of learning and promotion of detection methods.

The existing test method teaching is mainly based on theoretical teaching or intermittent teaching is carried out in the way of on-site guidance by the test personnel outside the test site before the start of each test, the learning effect is poor, and the time and cost are high; therefore, This patent application designs a commercial vehicle road test detection technology training method and device.

Contents of the invention

In view of this, the present invention aims to propose a commercial vehicle road test detection technology training method and device to solve the problems of poor teaching and learning effects, high time consumption and high cost of existing test methods.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

In a first aspect, the present invention provides a commercial vehicle road test detection technology training method, comprising the following steps:

S1. The inspectors prepare for the vehicle road test at the inspection end; the inspection end collects the voice information and operation image information of the inspection personnel, and sends the voice information and operation image information to the learning end, and the learning end receives and plays the voice information With the image information of the operation, the trainees simulate and learn the operation of the inspector at the learning end, and simulate the preparation for the test in the virtual scene;

S2. The inspectors carry out the vehicle road dynamic test. The detection end collects the scene information of the dynamic test road condition and transmits it to the learning end in real time. The students perform the dynamic simulation test operation in the simulated scene according to the scene information collected in real time.

Further, step S1 specifically includes the following methods:

The preparation work for the vehicle road test at the detection end includes: test equipment installation, test vehicle parameter setting and test equipment debugging;

After the debugging work is completed, the inspectors state the operation of each step in the preparation work, and explain the key steps in detail, and the inspection terminal collects the voice information of the inspectors and sends the voice information to the learning terminal;

The detection end collects the operating images in the cab of the test vehicle, and performs data processing on the collected operating image information, and the processed operating image information is displayed in the form of a three-dimensional operating scene.

Further, step S1 also includes: according to the played voice information and the displayed three-dimensional operation scene, the trainee learns the preparation workflow of the inspector, and performs the virtual operation of the test preparation work in the virtual scene.

Further, step S2 specifically includes the following methods:

After the preparations are ready, drive the test vehicle to the test road to carry out the test;

The detection end collects dynamic test road condition scene information, performs data processing on the scene information to obtain a three-dimensional driving scene, and displays the three-dimensional driving scene;

The testing personnel state the operation of each step in the testing process and explain the key steps in detail. The testing terminal collects the voice information of the testing personnel and sends the voice information to the learning terminal. The students learn the operating instructions of the testing personnel during the test and conduct virtual Operation, simulating the running condition of the vehicle during the feeling test.

In a second aspect, the present invention provides a commercial vehicle road test detection technology training device applying the commercial vehicle road test detection technology training method as described in the first aspect, and the training device includes: a detection terminal device and a learning terminal equipment;

The detection terminal equipment includes a first image acquisition device, a second image acquisition device, a detection device and a voice acquisition device; the first image acquisition device is used to collect the test operation scene information of the testing personnel, and the second image acquisition device is used to collect test information. The scene information of road condition changes in the process, the detection device is used to detect the speed change and steering angle change of the co-pilot position, and the collected speed data and steering angle data are transmitted to the learning terminal equipment, and the voice collection device is used to collect the detection personnel's voice voice message;

The learning end equipment includes an image display device, an image processing device, a simulated seat, an operating handle, and a speaker; the image processing device is connected to the image acquisition device through a wireless network, and converts the received image information into an image that can be displayed by the image display device. In the three-dimensional scene, the trainees use the operating handle to perform corresponding operations in the virtual display scene according to the operation steps of the inspectors. The simulated seat is used to simulate the road condition scene during the test, and the speaker is used to receive the voice information collected by the voice collection device in real time. and play it.

Further, the simulated seat includes a safety belt, a base, a steering mechanism, a swing mechanism, a processor and an electric control device;

The processor obtains the actual acceleration, steering angle and swing value according to the received speed data and steering angle data, and processes the control signal of the simulated seat, and the electronic control device controls the tilt and rotation of the simulated seat according to the control signal , making the movement of the simulated seat consistent with that of the passenger seat;

The swing mechanism and the steering mechanism are used to simulate the vehicle state changes during the vehicle test, as well as the sideslip and rotation caused by the uneven braking force of each axis and the difference of the road adhesion coefficient on both sides of the wheel;

The steering mechanism includes a steering shaft and a control motor, the lower end of the steering shaft is connected to the output end of the control motor, the upper end of the steering shaft is connected to the center of the bottom surface of the base, the control motor is arranged on the base, and the electric control device controls the action of the steering shaft according to the corresponding signal;

The swing mechanism includes a swing motor, which is arranged under the base and is used to control the swing of the simulated seat.

Further, the speed data includes the vehicle's running radius of curvature R, and the calculation formula is:

Among them, Vforward is the instantaneous vehicle speed, and AngRate is the instantaneous angular velocity.

Further, the instantaneous lateral acceleration of the vehicle is also included, and the calculation formula is as follows:

a _y is the instantaneous lateral acceleration of the vehicle, a' _y is the lateral acceleration collected by the acceleration sensor, g is the acceleration of gravity, and φ is the body roll angle.

Compared with the prior art, a commercial vehicle road test detection technology training method and device according to the present invention has the following beneficial effects:

(1) A commercial vehicle road test detection technology training method and device according to the present invention collects and detects the workflow through the whole process, and transmits it to the learning end for display. The test is carried out synchronously, so that multiple people can learn simultaneously, which is conducive to the promotion of the detection method.

(2) A commercial vehicle road test detection technology training method and device according to the present invention can realize the real-time simulation of the vehicle state through the steering mechanism and the swing mechanism of the seat, realize the safety simulation, and ensure the safety of the learners;

(3) A kind of commercial vehicle road test detection technology training method and device according to the present invention compares the standard with the radar speedometer through the high-precision wheel speed sensor, determines the rolling radius of the test vehicle, improves the accuracy of the instantaneous speed of the test vehicle, and then improves The accuracy of the detection method.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the principle diagram of the detection technology training device based on virtual reality technology described in the embodiment of the present invention;

Fig. 2 is a schematic diagram of the interaction process between the detection end and the learning end described in the embodiment of the present invention;

Fig. 3 is a schematic diagram of the positions of the main and auxiliary display areas in the virtual scene according to the embodiment of the present invention.

detailed description

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Please refer to Figure 1, embodiment one, the embodiment of the present invention provides a commercial vehicle road test detection technology training method, including the following steps:

Step 1. The inspectors prepare for the vehicle road test at the inspection end; the inspection end collects the voice information and operation image information of the inspection personnel, and sends the voice information and operation image information to the learning end, and the learning end receives and plays the voice Information and the operation image information, the trainees simulate and learn the operation of the inspection personnel at the learning end, and simulate the preparation for the test in the virtual scene.

The testing personnel carry out preparations such as instrument installation, parameter setting, and equipment debugging; the testing personnel select high-precision wheel speed sensors, gyroscopes, measuring steering wheels, robots, data collectors and other equipment for installation in accordance with the test operating procedures and test requirements;

The high-precision wheel speed sensor is installed on the wheels on both sides of the test vehicle, which can measure the precise wheel speed and determine the instantaneous speed of the test vehicle in combination with the rolling radius of the vehicle;

The gyroscope is installed on the rigid structure of the co-driver's seat, and the vehicle parameters and its accurate coordinates relative to the test vehicle are input into the gyroscope to measure the body roll angle, lateral acceleration and yaw rate of the test vehicle;

The measuring steering wheel is installed on the steering wheel of the test vehicle and reinforced so that it does not move relative to the steering wheel of the test vehicle, and is used to read the steering wheel angle and the torque acting on the steering wheel;

The robot is installed in the cab and connected with the measuring steering wheel, and does not move relative to the cab. Input corresponding data to control and measure steering wheel rotation speed, angle and torque, etc.;

The data collector is installed in the cab and can be connected with the above-mentioned equipment according to the test requirements to measure the vehicle's operating radius of curvature, yaw rate, body roll angle, lateral acceleration, vehicle instantaneous speed, steering wheel angle, steering wheel torque, detection time, etc. A series of parameters, the vehicle's operating radius of curvature, yaw rate, body roll angle, and lateral acceleration are not only used as the inspection results of the test vehicle, but also as the imported data of the learning terminal processor; the vehicle's instantaneous speed, steering wheel angle, steering wheel torque, and detection time And other parameters can be saved as the original data for post-test processing according to the test requirements.

The inspectors state the operation of each step in the preparation work, and explain the key steps in detail. The voice acquisition device collects the voice information of the inspectors and sends the voice information to the learning terminal.

The first image acquisition device collects images in the cab, sends the collected image information to the image processing device, processes the three-dimensional operation scene through the image processing device, sends the three-dimensional operation scene to the image display device, and displays it in the main display area of the image display device show.

At the learning end, the voice information of the inspector is played on the learning end through the loudspeaker, as an on-site instruction during the teaching process, so that the students can understand the key details of the operation process;

Through the voice information played by the speaker and the three-dimensional operation scene displayed by the image display device, the trainees learn the preparation workflow of the inspectors, and use the handle to perform the virtual operation of the test preparation work in the virtual scene; if there is a wiring error during the preparation process, parameter settings Inconsistency and other problems, the alarm will send out visual warning signals and auditory warning signals, and the visual warning signals and auditory warning signals will always exist until the operation is correct.

Step 2: The inspectors carry out the vehicle road dynamic test. The detection end collects the dynamic test road condition scene information and transmits it to the learning end in real time. The students perform the dynamic simulation test operation in the simulated scene according to the scene information collected in real time.

After the preparations are ready, the professional driver drives the test vehicle and drives the test vehicle to the test road according to the instructions of the inspectors to carry out the test according to the relevant requirements. The second image acquisition device collects scene information such as test environment and road surface information in real time, and sends the scene information to to the image processing device, the three-dimensional driving scene is obtained through the processing of the graphics processing device, and the three-dimensional driving scene is sent to the image display device, and displayed in the secondary display area of the image display device.

The testing personnel state the operation of each step in the testing process, and explain the key steps in detail. The voice acquisition device collects the voice information of the testing personnel and sends the voice information to the learning terminal.

Most of the existing speed measurement methods use GPS to collect and test the speed of the vehicle. Because the accuracy of the GPS system is limited, and it is usually used to measure the average speed within a period of time, it is used as the test vehicle speed, and there is a certain error in the result; the present invention uses a high-precision wheel speed sensor The instantaneous wheel speed n of the vehicle is measured, and the rolling radius i is measured in combination with the rolling radius of the vehicle to obtain a more accurate instantaneous vehicle speed Vforward. The calculation formula is as follows:

Vforward = 2πi n;

Due to the differences in the rolling radii of different vehicles, in order to make the rolling radius more accurate, a radar speedometer is used to monitor the instantaneous speed of the vehicle before each test, and the value of the rolling radius i is adjusted by comparing the instantaneous speed V of the vehicle measured by the radar speedometer. which satisfies:

At this time, the instantaneous vehicle speed Vforward obtained by the high-precision wheel speed sensor is consistent with the radar speed measurement result V.

The detection end collects the instantaneous velocity and yaw rate of the vehicle to calculate the radius of curvature R of the vehicle:

Among them, Vforward is the instantaneous velocity of the vehicle, AngRate is the instantaneous angular velocity, and the simulated seat at the learning end adjusts the posture of the student seat according to the value R of the curvature radius R of the vehicle.

In order to make the student feel the same while adjusting the posture of the student, it is necessary to calculate the lateral acceleration a _y at each moment:

为车身侧倾角，由陀螺仪采集。a _y is the instantaneous lateral acceleration, a' _y is the lateral acceleration indicated by the acceleration sensor, g is the gravitational acceleration,

is the body roll angle, which is collected by the gyroscope.

During the driving process of the test vehicle, the information such as the instantaneous speed of the vehicle, the yaw rate, the roll angle of the vehicle body, the lateral acceleration, and the radius of curvature of the vehicle are obtained through high-precision wheel speed sensors, data collectors, gyroscopes and other equipment, and processed by the processor. The actual instantaneous lateral acceleration, seat roll angle, and seat deflection angle of the co-pilot are obtained, and then the control signal of the seat is obtained. The electronic control device controls the tilt and rotation of the seat according to the control signal, so that the seat and the co-pilot seat The movement of the vehicle is consistent, so that the trainees can feel the movement of the vehicle during the test.

While controlling the movement of the seat, the test environment and road surface information during the driving process of the test vehicle are displayed through the secondary display area of the image display device, so that the trainees can have an immersive experience.

During the test, the voice information of the inspector is played through the speaker on the seat, so that the trainees can learn the operating instructions of the inspector during the test.

As shown in Figure 2, embodiment two, the embodiment of the present invention also provides a commercial vehicle road test detection technology training device applying a commercial vehicle road test detection technology training method as described in embodiment one, the training The device includes: detection end equipment and learning end equipment;

The detection end equipment includes an image acquisition device, a detection device and a voice acquisition device;

The image acquisition device (which may be a camera) is set inside the cab of the test vehicle, including a first image acquisition device and a second image acquisition device. The first image acquisition device is fixed on the left side of the headrest of the passenger seat for acquisition and detection. For the test operation scene of personnel, the second image acquisition device is installed on the upper part of the front windshield to collect the scene of road condition changes during the test process, including test environment, road surface information and other scene information.

Detection devices, including high-precision wheel speed sensors, gyroscopes, measuring steering wheels, robots and data collectors, etc.;

The high-precision wheel speed sensor is installed on the wheels on both sides of the test vehicle, which can measure the precise wheel speed and determine the instantaneous speed of the test vehicle in combination with the rolling radius of the vehicle;

The gyroscope is installed on the rigid structure of the co-driver's seat, and the vehicle parameters and its accurate coordinates relative to the test vehicle are input into the gyroscope to measure the body roll angle, lateral acceleration and yaw rate of the test vehicle;

The measuring steering wheel is installed on the steering wheel of the test vehicle and reinforced so that it does not move relative to the steering wheel of the test vehicle, and is used to read the steering wheel angle and the torque acting on the steering wheel;

The robot is installed in the cab and connected with the measuring steering wheel, and does not move relative to the cab. Input corresponding data to control and measure steering wheel rotation speed, angle and torque, etc.;

The data collector is installed in the cab and can be connected with the above-mentioned equipment according to the test requirements to measure the vehicle's operating radius of curvature, yaw rate, body roll angle, lateral acceleration, vehicle instantaneous speed, steering wheel angle, steering wheel torque, detection time, etc. A series of parameters, the vehicle's operating radius of curvature, yaw rate, body roll angle, and lateral acceleration are not only used as the inspection results of the test vehicle, but also as the imported data of the learning terminal processor; the vehicle's instantaneous speed, steering wheel angle, steering wheel torque, and detection time And other parameters can be saved as the original data for post-test processing according to the test requirements.

The voice collection device is installed on the top right side of the co-pilot's seat, and is used to collect voice information of inspectors.

The learning terminal equipment includes an image display device, an image processing device, a simulated seat, an operating handle, and a loudspeaker;

The image processing device is connected with the image acquisition device through a wireless network, and converts the received image information into a three-dimensional scene that can be displayed by the image display device. The output end of the image processing device is connected with the output end of the image display device, and the three-dimensional scene is transmitted to the image display device for display.

The image display device (which can be a VR display screen or VR glasses) is used to receive the data information transmitted from the image processing device in real time. The image display device presents a virtual scene of the cab and road information. The instruments and equipment are used for the preparation of the learners before the simulated test. As shown in Figure 3, the front windshield of the virtual scene is set in two areas, the main display and the sub-display area. Located in the lower right corner of the main display area, it is used to display the road condition scene during the driving process of the test vehicle at the detection end, so that the learners can observe the operation steps of the test personnel and the changes of the road conditions during the test.

Handle: Students use the handle to perform corresponding operations step by step in the virtual display scene according to the operation steps of the inspectors; the student end is also equipped with an alarm module, which is used to issue warnings when students have problems such as dangerous operations, wrong wiring, and inconsistent parameter settings .

The high-precision wheel speed sensor measures the precise wheel speed, combined with the rolling radius of the vehicle to determine the instantaneous speed of the test vehicle, the gyroscope measures the body roll angle, lateral acceleration and yaw rate of the test vehicle, and the data collector is connected to the above equipment according to the test requirements , input the required algorithm to obtain and display a series of parameters such as vehicle instantaneous speed, yaw rate, body roll angle, lateral acceleration, and vehicle curvature radius.

Simulated seats, including seat belts, bases, steering mechanisms, rocking mechanisms, processors and electronic control devices; processors receive vehicle instantaneous speed, yaw rate, body roll angle, lateral acceleration, vehicle radius of curvature, etc. After the information is processed, the control signal of the simulated seat is obtained, and the electric control device controls the tilt and rotation of the seat according to the control signal, so that the movement of the seat is consistent with that of the passenger seat.

The swing mechanism and the steering mechanism are used to simulate the vehicle state changes during the vehicle test, as well as situations such as sideslip and rotation due to factors such as uneven braking force of each axis and differences in road adhesion coefficients on both sides of the wheel.

The steering mechanism includes a steering shaft and a control motor, the lower end of the rotating shaft is connected to the output end of the control motor, the upper end of the rotating shaft is connected to the center of the bottom surface of the base, and the control motor is arranged on the base. The electric control device controls the action of the transmission shaft according to the corresponding signal.

The swing mechanism includes a swing motor, which is arranged under the base and is used to control the swing of the seat.

When the vehicle is traveling at a constant speed, the seat remains stable.

when speed changes

When the wheel speed sensor detects that the vehicle is decelerating, the simulated seat is controlled to accelerate backward to generate a deceleration corresponding to that of the passenger seat at the detection end; when the wheel speed sensor detects that the vehicle is accelerating, the simulated seat is controlled to accelerate forward The movement produces an acceleration corresponding to that of the passenger seat on the detection side.

When the test vehicle turns

When the vehicle is turning, the simulated seat is controlled to adjust the inclination angle and rotate according to the vehicle’s running radius of curvature and lateral acceleration, and the inclination angle is proportional to the lateral acceleration; using the vehicle’s instantaneous velocity and curvature radius when the test vehicle is turning, it is obtained by integral calculation The instantaneous steering angle of the vehicle, the rotation angle of the seat is consistent with the steering angle of the vehicle.

The loudspeakers are arranged on the left and right sides of the upper end of the simulated seat back, and are used to receive and play the voice information collected by the voice collection device in real time.

Specific examples are as follows:

It is used for the study of anti-lock braking performance test; the detection process involves various working conditions with different loads, different adhesion coefficients and different vehicle speeds. The test process is complicated and the risk factor is high; taking N3 trucks as an example, the detection end The inspectors should prepare for the test before the dynamic test. The inspectors should correctly connect high-precision wheel speed sensors, pressure sensors, vehicle speedometers and data collectors, and set corresponding parameters, such as the working voltage and range of the pressure sensors. Range, rolling radius of high-precision wheel speed sensor, etc. The operation process is collected by the first image collection device, and the operation instructions are collected by the voice collection device and transmitted to the learning terminal in real time.

The image processing device at the learning end receives and processes the image information at the detection end, and the processed image information is displayed in the main display area; the operation instructions are played through the speaker. The learners complete the corresponding preparatory work in sequence according to the contents of the main display area and the operation instructions. If there are problems such as wiring errors and inconsistent parameter settings during the preparation process of the learners, such as: the parameter setting of the high-precision wheel speed sensor is wrong, the alarm will give a voice prompt and display a flashing exclamation mark image in the upper left corner of the main display area. Voice prompts and exclamation mark images disappear when errors are corrected.

When the preparations are ready, the inspectors at the inspection end will drive the test vehicle to the test road to carry out the test according to the regulations. Stop the vehicle at the starting position, accelerate to the specified speed and drive to the designated road surface, and brake quickly after reaching the designated road surface to stop the test vehicle. During this process, the detection device at the detection end collects the speed change and steering angle change of the passenger seat. The collected speed data and steering data, and the second image collection device transmits the collected road condition scene of the dynamic test to the learning terminal in real time. The learning end processor obtains the actual acceleration, rotation angle and swing value according to the received speed data and steering data, and processes the obtained seat control signal. The electronic control device controls the seat tilt and rotation according to the control signal, so that the seat Corresponds to the movement of the passenger seat.

During the test, there will also be dangerous situations such as vehicle sideslip or rotation caused by problems such as uneven braking force of the vehicle, uneven water film on the road surface, and ABS failure. The learning terminal can receive the motion data at the same time, and control the seat to complete the corresponding motion under the action of the electronic control device, so that the students will not be injured under the protection of the seat belt, and at the same time they can feel the real state during the test.

In addition to the study of anti-lock braking performance test, the commercial vehicle road test detection technology training device and training method thereof of the present invention can also be used for commercial vehicle electronic stability control system performance test, curve braking test, steering force and handling stability The teaching of tests such as sex tests.

Those of ordinary skill in the art can realize that the units and method steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the relationship between hardware and software Interchangeability. In the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

In the several embodiments provided in this application, it should be understood that the disclosed method and system may be implemented in other ways. For example, the division of the above-mentioned units is only a logical function division, and there may be other division methods in actual implementation, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored, or Not implemented. The above-mentioned units may or may not be physically separated, and components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. All of them should be covered by the scope of the claims and description of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. A training method for a road test detection technology of a commercial vehicle is characterized by comprising the following steps:

s1, preparing a vehicle road test at a detection end by a detection person; the method comprises the following steps that a detection end collects voice information and operation image information of detection personnel and sends the voice information and the operation image information to a learning end, the learning end receives, plays and displays the voice information and the operation image information, and a student simulates the operation of the learning detection personnel at the learning end and simulates preparation work of a test in a virtual scene;

s2, the detection personnel develop a vehicle road dynamic test, the detection end collects road condition scene information of the dynamic test and transmits the scene information to the learning end in real time, and the students perform dynamic simulation test operation under a simulation scene according to the scene information collected in real time.

2. The training method for the road test detection technology of the commercial vehicle as claimed in claim 1, wherein the step S1 specifically comprises the following steps:

the preparation work for carrying out the vehicle road test at the detection end comprises the following steps: installing test equipment, setting test vehicle parameters and debugging the test equipment;

after the debugging work is finished, the detection personnel states the operation of each step in the preparation work, explains the important steps in detail, and acquires the voice information of the detection personnel and sends the voice information to the learning end by the detection end;

the detection end collects operation images in the cab of the test vehicle, data processing is carried out on the collected operation image information, and the processed operation image information is displayed in a three-dimensional operation scene mode.

3. The training method for the road test detection technology of the commercial vehicle as claimed in claim 2, wherein the step S1 further comprises: and the student learns the preparation work flow of the detection personnel according to the played voice information and the displayed three-dimensional operation scene, and performs virtual operation of test preparation work in the virtual scene.

4. The training method for the road test detection technology of the commercial vehicle as claimed in claim 1, wherein the step S2 specifically comprises the following steps:

after the preparation work is ready, the test vehicle is driven to a test road surface to carry out a test;

the method comprises the steps that a detection end collects dynamic test road condition scene information, data processing is carried out on the scene information to obtain a three-dimensional driving scene, and the three-dimensional driving scene is displayed;

the detection personnel state the operation of each step in the detection process, the important steps are explained in detail, the detection end collects the voice information of the detection personnel and sends the voice information to the learning end, the student learns the operation instruction of the detection personnel in the test process, virtual operation is carried out, and the vehicle running condition in the test process is simulated and sensed.

5. A training apparatus for a road test inspection technique of a commercial vehicle to which a training method for a road test inspection technique of a commercial vehicle according to any one of claims 1 to 4 is applied, the training apparatus comprising: the device comprises a detection end device and a learning end device;

the detection end equipment comprises a first image acquisition device, a second image acquisition device, a detection device and a voice acquisition device; the device comprises a first image acquisition device, a second image acquisition device, a learning terminal device and a voice acquisition device, wherein the first image acquisition device is used for acquiring test operation scene information of a tester, the second image acquisition device is used for acquiring road condition change scene information in the test process, the detection device is used for detecting speed change and steering angle change of a copilot, and transmitting acquired speed data and steering angle data to the learning terminal device;

the learning terminal equipment comprises an image display device, an image processing device, a simulation seat, an operating handle and a loudspeaker; the image processing device is connected with the image acquisition device through a wireless network, received image information is converted into a three-dimensional scene which can be used for the image display device to display, a student uses an operation handle to perform corresponding operation in the virtual display scene according to the operation steps of a detection worker, the simulation seat is used for simulating a road condition scene in the test process, and the loudspeaker is used for receiving voice information acquired by the voice acquisition device in real time and playing the voice information.

6. The training device for the road test detection technology of the commercial vehicle as claimed in claim 5, wherein: the simulation seat comprises a safety belt, a base, a steering mechanism, a swinging mechanism, a processor and an electric control device;

the processor obtains actual acceleration, steering angle and swing value according to the received speed data and steering angle data, and processes the actual acceleration, steering angle and swing value to obtain a control signal of the simulation seat, and the electric control device controls the simulation seat to incline and rotate according to the control signal to enable the simulation seat and the front passenger seat to move consistently;

the swing mechanism and the steering mechanism are used for simulating vehicle state change in a vehicle test process and sideslip and rotation conditions caused by uneven braking force of each shaft and different road surface adhesion coefficients at two sides of a wheel;

the steering mechanism comprises a steering shaft and a control motor, the lower end of the steering shaft is connected with the output end of the control motor, the upper end of the steering shaft is connected with the center of the bottom surface of the base, the control motor is arranged on the base, and the electric control device controls the steering shaft to act according to corresponding signals;

the swinging mechanism comprises a swinging motor, and the swinging motor is arranged below the base and used for controlling the simulation seat to swing.

7. The training device for the road test detection technology of the commercial vehicle as claimed in claim 6, wherein: the speed data includes a vehicle running radius of curvature R, and the calculation formula is as follows:

wherein Vforward is the instantaneous vehicle speed and AngRate is the instantaneous angular speed.

8. The training device for the road test detection technology of the commercial vehicle as claimed in claim 7, wherein: the method also comprises the vehicle instantaneous lateral acceleration, and the calculation formula is as follows:

a _y is the instantaneous lateral acceleration of the vehicle, a' _y The lateral acceleration is acquired by the acceleration sensor, g is the gravity acceleration, and phi is the vehicle body roll angle.

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