Experimental equipment and method for testing motion sickness phenomenon of automobile

Abstract

The invention relates to the technical field of automobile testing, and particularly discloses an experimental device and method for testing an automobile motion sickness phenomenon, and the device comprises a brain wave tester, a testing robot, a speed tester, a visual angle testing device, a vibration testing device, and a sound testing device. According to the invention, through a specific brain wave sensor, a specific road, a specific driving mode and a specific detection mode, the brain wave of a passenger is detected, and the driving process is digitally recorded by a detection robot; the speed, the acceleration, the turning radius, the sight deflection angle, the vibration amplitude, the sound size and the like in the driving process are digitized, and according to the corresponding brain wave data corresponding to the time axis, the motion sickness conditions of people under different riding modes and different driving conditions are determined by inquiring the carsickness conditions of a passenger and combining the brain wave data. And a comparison standard of the automobile motion sickness experiment is made according to the data.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive testing, and specifically discloses an experimental device and method for testing the motion sickness phenomenon of an automobile. Background Art

[0002] In the 21st century, automobiles have entered thousands of households as people's means of transportation. They are widely praised by users for their main usage characteristics such as fast speed, flexibility, convenience, and comfort. However, we have also noticed that people suffering from motion sickness are often seen when taking a bus or a car. Such passengers often experience symptoms of motion sickness such as headache, nausea, vomiting, pale complexion, and fatigue. In severe cases, they may not recover to normal within two or three days, which has attracted wide attention from the public.

[0003] The main reason for this motion sickness phenomenon in humans is that the body's balance organs are too sensitive, resulting in a disorder of the balance regulation function. The body's balance function is mainly controlled by the vestibular organs in the inner ear. In this maze-like organ, in addition to the vestibule, there are three semicircular canals that are cleverly positioned. They contain flowing lymph fluid and rich nerve endings, and are connected to the brain nerve center through vestibular nerve fibers. They receive various motion stimuli and, together with the body's tactile, visual, and muscle joint sensations, produce complex conditioned reflexes to jointly maintain the body's balance function and keep the body in various corresponding balanced states. From the perspective of the relationship between the vehicle and the human, it is that the vibration frequency of the vehicle is close to or equal to the natural frequency of the internal organs. At this time, resonance occurs between the vehicle and the human, giving people a feeling of dizziness and then causing motion sickness. Secondly, factors such as vehicle exhaust emissions, harmful gases, gasoline odors, psychological states, physical balance abilities, road conditions, and vehicle structures also play a role. Again, the usage and maintenance conditions of the vehicle are also key factors in causing motion sickness.

[0004] Under normal circumstances, various body position changes in the human body are not likely to cause balance disorders. Only when taking a car, boat, or plane, when the vestibular organs are strongly stimulated by shaking, bumping, rotation, and acceleration, some people with sensitive vestibular excitability will experience symptoms such as dizziness, tinnitus, nausea, vomiting, and even pale complexion and cold sweats. In addition, factors such as gasoline odors, cigarette odors, stuffy and dirty environments inside the vehicle or plane, as well as the human body being fasting, overfull, fatigued, drunk, or mentally stressed, can all induce or exacerbate motion sickness.

[0005] However, there is currently no specific calibration standard for the specific inducing factors and specific data of motion sickness, and there are still some uncertain factors within the concerned range. It is precisely these uncertain factors that make it difficult to accurately quantify the automotive dizziness experiment when conducting a quantitative standard experiment. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide an experimental device and method for testing motion sickness in automobiles to solve the above technical problems.

[0007] To achieve the above object, the present invention provides the following technical solutions: An experimental device and method for testing motion sickness in automobiles, including an electroencephalogram tester, a test robot, a speed tester, a perspective test device, a vibration test device, and a sound test device; The electroencephalogram tester is connected to an electroencephalogram recorder. The electroencephalogram tester is a head-mounted device, and the electroencephalogram recorder is used to record the peripheral nerve response data of a person, record the psychophysiological response states of a person under different road conditions and different vehicle operating states, and analyze in real time the response data such as fatigue and motion sickness of a person. The speed tester is a speedometer, and the speed tester is used to test the driving speed, acceleration, deceleration, average speed, and instantaneous speed of an automobile. The perspective test device uses a binocular camera to locate the position of the test robot. The position of the test robot includes sitting posture, upper body position, head position, and eye point position.

[0008] The vibration test device is a vibration tester, which is used to test the acceleration ACC (M / S 2 ), acceleration peak PEAK, acceleration crest factor C.F., speed VEL (m / s), and displacement DISP (m / s) during the operation of an automobile.

[0009] Preferably, the electroencephalogram tester is composed of a head-mounted device and a reading device. The head-mounted device is provided with a forehead sensor and a reference sensor. The forehead sensor is used to read the electroencephalogram of the frontal brain, the reference sensor is used to eliminate interference signals, and an electroencephalogram amplifier is provided beside the forehead sensor.

[0010] Preferably, the perspective test device is provided with a binocular camera. The binocular camera is installed on the center console of the co-pilot of the automobile. The binocular camera is connected to the test robot, and both the robot and the binocular camera are connected to a computer. The perspective test device is used to locate the simulated line of sight of the robot, locate the head position of the robot, and perform positioning and position inspection during the movement of the robot's body.

[0011] Preferably, the sound test device tests the instantaneous sound decibels inside the vehicle within a certain range, records the instantaneous decibels over a period of time, and the sound test device can also distinguish the sound categories.

[0012] Preferably, the vibration test device is installed on the B-pillar of the automobile. An installation seat is provided on the B-pillar of the automobile. Concavities are provided on both sides of the vibration test device, and vibration sensors are provided inside the vibration test device.

[0013] Preferably, the test robot is arranged in the co-pilot's seat of the cockpit. The sound test device is arranged inside the test robot, and the sound receiving ports are arranged at the positions of the two ears of the robot. Various sensors are also arranged inside the test robot, including a vibration sensor, a temperature sensor, and a sound sensor.

[0014] The working principle and beneficial effects of this solution are as follows: In the present invention, through specific brain wave sensors, specific roads, specific driving methods, specific detection methods, by detecting the brain waves of passengers, and by the detection robot's digital recording of the driving process data, data such as speed, acceleration, turning radius, line-of-sight deflection angle, vibration amplitude, and sound volume during the driving process are digitalized, and the corresponding brain wave data is corresponded according to the time axis. By combining the inquiry of the passengers about motion sickness with the brain wave data, the motion sickness conditions of people under different riding methods and different driving conditions are determined, and a comparison standard for the automotive motion sickness experiment is made based on the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the brain wave tester in the embodiment of the experimental device and method for testing automotive motion sickness phenomenon of the present invention; Figure 2 It is a side view of the test robot in the embodiment of the experimental device and method for testing automotive motion sickness phenomenon of the present invention; Figure 3 It is an actual test diagram in the embodiment of the experimental device and method for testing automotive motion sickness phenomenon of the present invention; Figure 4 It is an actual application scenario diagram of the brain wave tester in the embodiment of the experimental device and method for testing automotive motion sickness phenomenon of the present invention; Figure 5 It is a classification diagram of motion sickness degree in the embodiment of the experimental device and method for testing automotive motion sickness phenomenon of the present invention; Figure 6 It is a test data record table of electroencephalogram and galvanic skin response in the embodiment of the experimental device and method for testing automotive motion sickness phenomenon of the present invention; The marks in the drawings are as follows: the head-mounted device 1, the forehead sensor 101, and the reference sensor 102. DETAILED DESCRIPTION OF THE INVENTION

[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the protection scope of the present invention.

[0017] The following is a further detailed description through specific embodiments: Embodiment 1 As Figure 1-3 shown, an experimental device and method for testing motion sickness in automobiles consists of an electroencephalogram (EEG) tester, a test robot, a speed tester, a perspective tester, a vibration tester, and a sound tester. Among them, a vibration sensor, a temperature sensor, and a sound sensor are provided in the test robot. These sensors are respectively used for detecting the amplitude inside the vehicle, temperature detection, and sound detection during the test. The test robot is connected to a control host. A sound classification module is provided in the control host to collect and classify the sounds inside the vehicle and analyze the decibels of each sound; Among them, the speed tester, the perspective tester, the vibration tester, and the sound test are all based on the EEG tester. Various data are respectively tested under different invariant conditions, and the test method is to test the brain wave changes of the tested person through the EEG tester, and analyze the influence of different variables on the motion sickness of the passengers through the later brain wave change diagram; The EEG tester consists of a head-mounted device 1 and a reading device. The head-mounted device includes a forehead sensor 101 and a reference sensor 102. When the head-mounted device is worn on the head, the position of the forehead sensor 101 is close to the forehead of the tested person to test the brain wave changes of the tested person. When the forehead sensor 101 tests the brain waves, the reference sensor 102 is used to eliminate the remaining unnecessary interference signals. And a brain wave amplifier is also provided in the head-mounted device. The brain wave amplifier amplifies the brain wave signal, and then the reading device reads the brain wave signal of the head-mounted device. The reading device is placed at the footrest of the rear seat; The sound tester collects the instantaneous sound within a certain period of time and the average sound decibel value within a certain period of time, and compares the instantaneous decibel and the average decibel value through a comparison module, and makes a curve graph. Combining with the EEG tester, it analyzes the influence of sound on motion sickness; The vibration tester, under the condition that the sound, perspective, and driving speed are determined, tests the brain wave data of the tested person under different vehicle body vibration conditions through the bumpy conditions of different road surfaces, and asks about the motion sickness situation.

[0018] According to different motion sickness situations and the answers of the tested personnel, as Figure 5 shown, the motion sickness degree is divided into ten levels. When the tested personnel answer, they only need to answer the number corresponding to the motion sickness level.

[0019] The advantages of the embodiment are as follows: In this embodiment, through a specific brain wave sensor, specific roads, specific driving methods, specific detection methods, by detecting the brain waves of passengers and through the data recording of the driving process by a detection robot, data such as speed, acceleration, turning radius, line-of-sight deflection angle, vibration amplitude, and sound volume during driving are digitalized, and the corresponding brain wave data is corresponding according to the time axis. By combining the brain wave data with the inquiry about the motion sickness situation of the passengers, the motion sickness situation of people under different riding methods and different driving conditions is obtained, and a comparison standard for the automotive motion sickness experiment is made according to the data.

[0020] Embodiment 2 As Figure 4 shown, for an experimental device and method for testing automotive motion sickness phenomena, due to different testing methods, the placement position of the robot moves from the front passenger seat to the back row to ride with the tested person. Further explanation, according to the feedback of the brain wave results, the data of the brain wave tester is not perfect. Under the condition that other conditions remain unchanged, an all-inclusive brain wave tester is adopted. The all-inclusive brain wave tester has 26 test points, 20 test points on the head and 6 test points on the face. Through 26 brain wave data, the data is comprehensively analyzed. This embodiment also has a galvanic skin test. The galvanic skin test points are located on the back of the hand, and three electrode patches are attached to detect the galvanic skin.

[0021] According to the change of the brain wave tester in this embodiment, the data recording is in the form of a full-process inquiry record. The recorded content includes the inquiry about the motion sickness degree, the dot recording of the brain wave data, and the dot recording of the galvanic skin data, as Figure 6 shown.

[0022] And according to the method of Embodiment 1, subjective inquiries are made to the tested persons, and during the test process, the brain wave information of the tested persons is collected. Combining the subjective inquiry results, the relationship between motion sickness and speed, bumpiness, line of sight, and sound is analyzed.

[0023] In this embodiment, through the upgrade of the multi-brain wave tester, through the multi-point brain wave acquisition and galvanic skin acquisition, the brain wave data is further strengthened. Combining the subjective inquiry results, the connection between the test data and motion sickness is further determined. Embodiment 3 An experimental device and method for testing automotive motion sickness phenomena, aiming at the extended test methods of Embodiment 1 and Embodiment 2, the relationship between motion sickness and the automotive kinetic energy recovery system. The specific test method is as follows: S1, the test vehicles are divided into new energy vehicles with a kinetic energy recovery system and traditional fuel vehicles. S2. Install an electric energy sensor in the kinetic energy recovery system of the new energy vehicle. The electric energy sensor is connected to a triggering device, which is a warning light. The warning light extends to the in-vehicle central control, and the light is pasted on the console table by means of double-sided tape. S3. During the driving process of the new energy vehicle, repeat the operations of accelerating and decelerating, and perform long-term deceleration operations on long downhill sections. During this period, ask the tested personnel about their motion sickness conditions. S4. Use the same driver. The test vehicle is a traditional fuel vehicle. Repeat S3 in the operation method and ask the tested personnel about their motion sickness conditions.

[0024] Advantages of this embodiment: Based on Embodiment 1 and Embodiment 2, this embodiment tests the correlation between the kinetic energy recovery system of the new energy vehicle and motion sickness, providing data support and theoretical basis for the formulation of new standards for motion sickness.

[0025] The usage method of the above experimental equipment and method for testing the motion sickness phenomenon of vehicles includes the following steps: S1. Install the equipment on the vehicle, install the test robot in the co-pilot of the vehicle, and have real people sit in the back row of the vehicle. And have a real person drive in the front driver's seat to simulate various different driving habits through real-person driving. S2. Turn on various test equipment. The driver makes sudden stops, sudden starts, sharp turns, and some regular and irregular operations to test the motion sickness conditions and data of the passengers under different driving styles. S3. Test the different degrees of motion sickness of the passengers in different environments, and make data references according to different riding environments based on the test data of the electroencephalogram tester. S4. Through the inquiry of the passengers in the vehicle, refer to multiple groups of data to form an average value and form a reference standard.

[0026] An experimental method for testing the motion sickness phenomenon of vehicles includes the following steps: S1. Wear an electroencephalogram tester in advance and ensure that the connecting electrodes are intact. S2. The tested personnel wearing the electroencephalogram tester sit in the back row of the vehicle, connect the electroencephalogram tester to the reading device, and connect the reading device to the computer. View the electroencephalogram data through the computer and check whether the electroencephalogram tester can fully read the electroencephalogram data. S3. After the equipment is connected properly, the tested personnel watch a specific video, and the staff asks about the current motion sickness situation and records the subjective motion sickness degree. S4. Start the vehicle, drive through a specific section, and ask the tested personnel whether they have motion sickness every 5 minutes. S6. After the test is completed, stop the vehicle, remove the equipment, and fill out a questionnaire. Among them, in S4, specific road sections include 180° curves, 270° curves, mountain roads, long straight roads, etc.

[0027] In S2, a fixator is also worn outside the electroencephalogram tester, and the fixator makes the electroencephalogram tester closely adhere to the head of the person being tested.

[0028] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the solution is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the present invention.

Claims

1. An experimental device for testing the motion sickness phenomenon of a car, characterized in that: Including brain wave tester, test robot, speed tester, visual angle test equipment, vibration test equipment and sound test equipment; The EEG tester is connected to the EEG recorder, which is a head-mounted device. The EEG recorder is used to record the peripheral nerve response data of a person, record the psychological and physiological response state of a person under different road conditions and different vehicle operation states, and analyze the response data of a person such as fatigue and motion sickness in real time; The speed tester is a speedometer, which is used to test the driving speed, acceleration, deceleration, average speed and instantaneous speed of the car; The viewing angle test equipment is used to locate the position of the test robot through a binocular camera. The test robot's position includes the sitting posture, upper body position, head position and the eye point position of the robot's line of sight; The vibration test equipment is a vibration tester, which is used to test the vibration amplitude and vibration frequency when the car is running.

2. The experimental equipment for testing the motion sickness phenomenon of a car according to claim 1, characterized in that: The brain wave tester is composed of a head-mounted device and a reading device. The head-mounted device is provided with a forehead sensor and a reference sensor. The forehead sensor is used to read forebrain brain waves, and the reference sensor is used to eliminate interference signals. A brain wave amplifier is provided next to the forehead sensor.

3. The experimental equipment for testing the motion sickness phenomenon of a car according to claim 2, characterized in that: The viewing angle test device is provided with a binocular camera, which is installed on the co-pilot center console of the car. The binocular camera is connected to a test robot, and the robot and the binocular camera are connected to a computer at the same time. The viewing angle test device is used to locate the robot's simulated line of sight, the robot's head position, and the positioning and position inspection of the robot during body movement.

4. The experimental equipment for testing the motion sickness phenomenon of a car according to claim 1, characterized in that: The sound testing device tests the instantaneous sound decibels in the vehicle within a certain time axis, and calculates the average decibel value by recording the instantaneous decibels within a period of time. The sound testing device can also distinguish the sound categories.

5. The experimental equipment for testing the motion sickness phenomenon of a car according to claim 4, characterized in that: The vibration test device is installed on the B-pillar of the car. A mounting seat is arranged on the B-pillar of the car. Indentations are arranged on both sides of the vibration test device. A vibration sensor is arranged inside the vibration test device.

6. The experimental equipment for testing the motion sickness phenomenon of a car according to claim 1, characterized in that: The test robot is arranged at the co-pilot seat of the cockpit, the sound test equipment is arranged in the test robot, and the sound receiving port is arranged at the binocular position of the robot, and various sensors, such as vibration sensor, temperature sensor and sound sensor, are also arranged in the test robot.

7. An experimental method for testing automobile motion sickness according to any one of claims 1 to 6, characterized in that: include S1, wear the EEG tester in advance and ensure that the electrodes are connected intact; S2, the person being tested wearing the electroencephalogram tester sits in the back seat of the vehicle, connects the electroencephalogram tester to a reading device, and connects the reading device to a computer, checks the electroencephalogram data through the computer, and checks whether the electroencephalogram tester can fully read the electroencephalogram data; S3, after the device is connected, the test person watches a specific video, and the staff asks about the current motion sickness and records the subjective motion sickness level; S4, start the car, pass a specific road section, and ask the test person every 5 minutes whether he or she has motion sickness; S6, test completed, stop the car, remove the equipment, and fill in the questionnaire.

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