Method and system for evaluating biological friendliness of passenger compartment of road vehicle

Abstract

The invention discloses a method and a system for evaluating biological friendliness of a passenger compartment of a road vehicle, and the method comprises the steps: setting cabin health evaluation, cabin comfort evaluation and advanced safety science and technology application evaluation, the comprehensive scoring result is equal to the sigma cabin health evaluation index score + the sigma cabin comfort evaluation index score + the sigma advanced safety science and technology application evaluation index score. The cabin health evaluation comprises in-vehicle air quality evaluation, in-vehicle electromagnetic radiation evaluation, in-vehicle constant contact part polycyclic aromatic hydrocarbon content evaluation and in-vehicle constant contact part transferable substance content evaluation. The cabin comfort evaluation comprises in-vehicle smell sensory evaluation, in-vehicle seat comfort evaluation, in-vehicle environment noise filtering evaluation and in-vehicle visual sensory comfort evaluation. In advanced safety science and technology application evaluation, the passenger health safety technology application condition is evaluated.

Description

Technical Field

[0001] The present invention relates to a vehicle passenger compartment evaluation technology, and in particular to a road vehicle passenger compartment bio-friendliness evaluation method and an evaluation system thereof. Background Art

[0002] At present, the quality of the in-car environment has attracted wide attention from consumers and vehicle manufacturers because of its potential impact on the health and safety of passengers. The national standard "GB / T_27630-2011_Guidelines for the Evaluation of Air Quality in Passenger Cars" has set requirements for 8 toxic and harmful components (benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde, and acrolein), and relevant agencies are promoting the transformation of this standard into a mandatory standard. "HJ / T_400-2007_Sampling and Determination Methods for Volatile Organic Compounds and Aldehydes and Ketones in Cars" is the test method cited by GB / T_27630-2011. At the same time, "GB_18352.6-2016_Light-duty Vehicle Pollutant Emission Limits and Measurement Methods (China Phase VI)" has been prepared to add requirements for in-car air quality.

[0003] In daily life and work, electromagnetic radiation can usually be divided into radio frequency radiation and extremely low frequency radiation. The frequency range is generally 3Hz-300GHz, divided into high frequency and low frequency. The higher the frequency of electromagnetic radiation, the greater the harm it causes to the human body, affecting the nervous system, cardiovascular system, immune system, eyes and reproductive system, etc. At present, the electrification of vehicles is developing rapidly, and the electromagnetic radiation it brings is widely distributed from low frequency to high frequency, which also brings potential harm to the health of passengers.

[0004] Common PAHs include benzo(a)pyrene, benzo(e)pyrene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(j)fluoranthene, benzo(k)fluoranthene, Dibenzo(a,h)anthracene, benzo(g,h,i)perylene, indenyl(1,2,3-cd)pyrene, phenanthrene, pyrene, anthracene, fluoranthene, naphthalene, etc. Due to their high carcinogenicity, PAHs have been widely banned or restricted in use around the world. PAHs can be found in non-metallic automotive products. If they come into contact with passengers for a long time, they can easily cause health damage to the passengers.

[0005] Migratable substances generally include antimony, arsenic, barium, cadmium, chromium, lead, mercury, selenium, etc. Due to the instability of migratable substances, long-term contact will be absorbed by human skin, leading to severe or chronic poisoning, which has potential health hazards to the liver, kidneys, brain, bones, and reproductive system. Migratable substances are widely present in non-metallic products of automobiles, and if they come into contact with passengers for a long time, they are also likely to cause health damage to passengers.

[0006] In addition to the above problems of damage to human health, since passengers spend a long time in the passenger compartment, the passenger compartment has potential effects on the human body's vision, hearing, touch, and smell. For example, noise acts on the central nervous system through the auditory organs, which will affect various organs in the body, causing symptoms such as headaches, brain swelling, tinnitus, insomnia, and general fatigue; the bad odor level in the car will irritate the passenger's respiratory system and even cause allergic reactions; the poor visual experience in the car will also affect the driver's attention or mental state; the comfort of the seat is an indicator that long-distance drivers urgently need and pay attention to.

[0007] With the advancement of technology, more and more safety measures are being added to the passenger compartment of the vehicle, such as driver alcohol lock, driver fatigue warning system, healthy fragrance system, in-vehicle biometric recognition system, etc. These configurations have greatly protected the life safety of the passengers in the vehicle. However, due to different configurations of vehicles, it is difficult to objectively evaluate the extremely concerned goals such as road vehicle safety, health, and comfort.

[0008] At present, the industry has safety evaluation indicators such as C-NCAP and C-IASI to conduct all-round safety performance tests on vehicles, including occupant protection, pedestrian protection, active safety, etc., so as to provide consumers with more systematic and objective vehicle safety information. C-ECAP includes five evaluation indicators: in-car air quality, in-car noise, harmful substances, comprehensive fuel consumption and exhaust emissions, and evaluates the ecological and environmental protection attributes of the whole vehicle. C-AHI evaluates the health hazards of VOC, odor, in-car particulate matter, electromagnetic radiation and allergenic substances in the car. However, these evaluation indicators cannot objectively and comprehensively reflect the bio-friendly attributes of the car's passenger compartment.

[0009] A bio-friendly passenger cabin refers to a high-standard vehicle cabin that can effectively ensure the safety, health, and comfort of vehicle occupants (including humans and animals). However, there is no method in the industry that can be used as a reference for evaluating bio-friendly passenger cabins. Summary of the invention

[0010] To this end, the present invention provides a method and system for evaluating the bio-friendliness of a road vehicle passenger compartment, which solve the technical difficulties in comprehensive evaluation of the bio-friendliness of a road vehicle passenger compartment, and provide underlying technical support for automobile companies to develop safe, healthy, and comfortable high-standard automobile cabins through objective and comprehensive evaluation.

[0011] The technical solution adopted by the present invention is as follows:

[0012] The present invention provides a method for evaluating the bio-friendliness of a road vehicle passenger cabin, wherein a cabin health evaluation, a cabin comfort evaluation and an advanced safety technology application evaluation are set, and a total scoring standard is 100 points, wherein a basic score of a cabin health evaluation index is 60 points, a basic score of a cabin comfort evaluation index is 30 points, and a basic score of an advanced safety technology application evaluation index is 10 points, and a comprehensive scoring result = Σ cabin health evaluation index score + Σ cabin comfort evaluation index score + Σ advanced safety technology application evaluation index score.

[0013] Further:

[0014] The cabin health evaluation includes the evaluation of in-car air quality, in-car electromagnetic radiation, in-car polycyclic aromatic hydrocarbons content in the commonly-contacted part, and in-car migratable substances content in the commonly-contacted part. The basic score of the in-car air quality evaluation index is 26 points; the basic score of the in-car electromagnetic radiation evaluation index is 20 points; the basic score of the in-car polycyclic aromatic hydrocarbons content evaluation index in the commonly-contacted part is 7 points; and the basic score of the in-car migratable substances content evaluation index in the commonly-contacted part is 7 points.

[0015] The evaluation of in-vehicle air quality includes the evaluation of three modes: normal temperature, idle speed, and high temperature, with basic scores of 16 points, 6 points, and 4 points respectively;

[0016] The evaluation of electromagnetic radiation in the vehicle includes evaluation of four modes: stationary, constant speed driving, accelerated driving, and decelerated driving, each with a basic score of 5 points;

[0017] The evaluation of the PAH content in the commonly contacted parts of the vehicle includes the evaluation of seven parts: the steering wheel, the passenger armrest, the shift knob / handle, the multi-function switch handle, the seat and headrest, the seat belt webbing, and the multi-function screen, with a basic score of 1 point respectively;

[0018] The evaluation of the content of migratable substances in frequently contacted parts of the vehicle includes the evaluation of seven components, namely the steering wheel, passenger armrest, shift knob / handle, multi-function switch handle, seat and headrest, seat belt webbing, and multi-function screen, with a basic score of 1 point each.

[0019] Further:

[0020] In the evaluation of in-vehicle air quality, the evaluation indicators of normal temperature mode include the evaluation of eight components: benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde and acrolein; the evaluation indicators of idle mode include the evaluation of three components: total carbon volatiles, formaldehyde and carbon monoxide; the evaluation indicators of high temperature mode include the evaluation of two components: total carbon volatiles and formaldehyde. Set a limit value for each component and assign points according to the percentage of the measured value to the limit value;

[0021] In the evaluation of electromagnetic radiation in the vehicle, the limit values ​​are set according to the following frequency bands: 1-8Hz, 8-25Hz, 0.025-1.2kHz, 1.2-2.9kHz, 2.9-57kHz, 57-100kHz, 0.1-3MHz, 3-30MHz, 30-3000MHz, 3000-15000Mhz, 15GHz-300GHz, and the points are assigned according to the percentage of the measured value to the limit value;

[0022] The evaluation of the content of polycyclic aromatic hydrocarbons in the commonly contacted parts of the vehicle includes the evaluation of 15 polycyclic aromatic hydrocarbons: benzo(a)pyrene, benzo(e)pyrene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(j)fluoranthene, benzo(k)fluoranthene, For dibenzo(a,h)anthracene, benzo(g,h,i)perylene, indeno(1,2,3-cd)pyrene, phenanthrene, pyrene, anthracene, fluoranthene and naphthalene, a limit is set for the sum of the contents and points are assigned according to the percentage of the measured value to the limit;

[0023] The evaluation of the content of migratable substances in the frequently contacted parts of the vehicle includes the evaluation of the following elements: antimony, arsenic, barium, cadmium, chromium, lead, mercury, and selenium. Limit values ​​are set for each element, and points are assigned according to the percentage of the measured value to the limit value.

[0024] Further:

[0025] The cabin comfort evaluation includes the in-car odor sensory evaluation, in-car seat comfort evaluation, in-car environmental noise filtering evaluation and in-car visual sensory comfort evaluation. The basic score of the in-car odor sensory evaluation index is 10 points, the basic score of the in-car seat comfort evaluation index is 12 points, the basic score of the in-car environmental noise filtering evaluation index is 4 points, and the basic score of the in-car visual sensory comfort evaluation index is 4 points.

[0026] The sensory evaluation of the in-vehicle odor is scored according to the odor level;

[0027] The in-vehicle seat comfort evaluation includes the evaluation of the comfort of the main driver's seat, the co-driver's seat, the left rear seat and the right rear seat. The basic score of the evaluation index of each seat is 3 points. Each seat is scored according to the five weights of head support, shoulder support, back support, hip support and thigh support, and then the score is summed;

[0028] The in-vehicle environmental noise filtering evaluation includes the evaluation of the noise attenuation rate at the driver's seat headrest, the co-driver's seat headrest, the rear left seat headrest and the rear right seat headrest. The basic score of the evaluation index at each location is 1 point, and points are assigned according to the noise attenuation rate. Noise attenuation rate (%) = (1-measurement result / 80dB (A)) × 100%;

[0029] The evaluation of the visual sensory comfort in the car includes the evaluation of daytime visual sensory comfort and nighttime visual sensory comfort. The basic score of each evaluation index is 2 points. The evaluation method is: if the number of comfortable people is greater than or equal to 3, the score is 100% of the basic score; if the number of comfortable people is less than 3, no score is awarded.

[0030] Further:

[0031] The advanced safety technology application evaluation is conducted by the neutral evaluation committee. Each time an advanced safety technology application project is confirmed, 2 points will be awarded, with a maximum of 10 points. Among them, the advanced safety technology application project refers to the technology application project that can ensure the health and safety of the occupants.

[0032] The present invention also provides an evaluation system for implementing the bio-friendliness evaluation method of a road vehicle passenger compartment, comprising: an evaluation system environment chamber, a system simulation unit, a test vehicle, an evaluation unit, and a central control unit.

[0033] The evaluation system environment chamber is provided with double walls, the outer wall is made of metal structure and has electromagnetic shielding function; the inner wall is made of rock wool fiber material and has sound absorption and noise reduction function; a bearing ground is provided inside the environment chamber for bearing the test vehicle;

[0034] The system simulation unit includes: a rotating hub system, which is arranged on the bearing ground of the environmental chamber, and the test vehicle is placed on the rotating hub system; a light simulation unit, which simulates the sunlight spectrum, and the irradiation range is 0-500W / m 2 ; The noise simulation unit simulates 0-150db white noise at the vehicle position; the exhaust emission system generates negative pressure to allow the vehicle exhaust to be discharged smoothly from the interior cabin; the fresh air intake device provides a clean, constant-temperature air source for the environmental chamber;

[0035] The evaluation unit includes: a subjective evaluation unit, a human-computer interaction interface, a seat comfort evaluation interface, an odor evaluation interface, an in-vehicle visual sensory comfort evaluation interface; a noise sensor, an electromagnetic radiation sensor; and an in-vehicle air sampling tube;

[0036] The central control unit is connected to the evaluation unit, and includes: a subjective evaluation result recording device, a noise signal processing recording device, an electromagnetic radiation signal processing recording device, and an in-vehicle air quality analysis module.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] 1. The in-vehicle air quality evaluation index under idle and high temperature conditions has been optimized. Carbon monoxide assessment has been added under idle conditions, which is closer to the actual working conditions. Under high temperature conditions, only total carbon and formaldehyde are examined, which makes the results more intuitive and simplifies the experimental process.

[0039] 2. The contribution ratio of the in-vehicle electromagnetic radiation index to the health evaluation index has been optimized. The index is stricter than the current status of the industry and can promote the advancement of vehicle electromagnetic shielding development technology;

[0040] 3. The evaluation of the PAH content index of the commonly contacted parts in the car has been optimized, and only the total PAHs are examined, which makes the operation simpler and the results more intuitive;

[0041] 4. An evaluation method for the index of the content of migratable substances in the frequently contacted parts of the vehicle has been developed, which is the first time in the automotive industry. More stringent requirements can promote the development of industry material technology;

[0042] 5. The common indicators of the in-vehicle odor sensory index are simplified, and only the odor perception closest to the actual vehicle condition is retained, making the operation simpler;

[0043] 6. The in-vehicle seat comfort evaluation index and related evaluation methods have been established, filling the gap in the industry and improving the evaluation methods. Requirements for personnel clothing have been put forward, and the results are more accurate;

[0044] 7. An in-vehicle environmental noise filtering index was established to examine the noise filtering capability, which is different from the common driving noise assessment in the industry;

[0045] 8. An evaluation index for in-vehicle visual sensory comfort has been established, which is the first of its kind in the industry and can directly evaluate the visual experience and visual impact of the entire vehicle during the day and at night;

[0046] 9. Through the advanced safety technology application evaluation index, encourage enterprises to apply the industry's advanced safety technology to the safety protection of vehicle occupants and promote industry progress;

[0047] 10. The present invention has successfully developed a method for evaluating the bio-friendliness of a road vehicle passenger compartment, which can objectively and comprehensively reflect the bio-friendliness of the vehicle passenger compartment, and provide strong support for automobile companies to develop safe, healthy, and comfortable high-standard vehicle cabins;

[0048] 11. The present invention designs a vehicle evaluation system, which can solve the test dimensions such as the in-vehicle air quality evaluation index, in-vehicle electromagnetic radiation index, in-vehicle odor sensory index, in-vehicle seat comfort evaluation index, in-vehicle environmental noise filtering index, and in-vehicle visual sensory comfort evaluation index in one stop. At the same time, other dimensional data can be input and processed, analyzed and sorted, and an evaluation report can be generated.

[0049] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practicing the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the evaluation process of the present invention;

[0051] Figure 2 Schematic diagram of the evaluation system of the present invention. DETAILED DESCRIPTION

[0052] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the present invention. However, those skilled in the art should know that the following embodiments are not the only limitations on the technical solutions of the present invention, and any equivalent changes or modifications made under the spirit of the technical solutions of the present invention should be deemed to belong to the protection scope of the present invention.

[0053] like Figure 1 As shown, a method for evaluating the bio-friendliness of a road vehicle passenger compartment is provided, and the evaluation sub-items are set to include cabin health evaluation, cabin comfort evaluation, and advanced safety technology application evaluation, and the total evaluation score is set to 100 points. Among them, the contribution of the cabin health evaluation index to the bio-friendliness evaluation of the road vehicle passenger compartment is 60 points, the contribution of the cabin comfort evaluation index to the bio-friendliness evaluation of the road vehicle passenger compartment is 30 points, and the contribution of the advanced safety technology application evaluation index to the bio-friendliness evaluation of the road vehicle passenger compartment is 10 points.

[0054] I: Cockpit Health Assessment

[0055] The cabin health evaluation includes the evaluation of in-vehicle air quality, the evaluation of in-vehicle electromagnetic radiation, the evaluation of polycyclic aromatic hydrocarbons content in commonly contacted parts in the vehicle, and the evaluation of migratable substances content in commonly contacted parts in the vehicle.

[0056] Among them, the basic score of the in-vehicle air quality evaluation index is 26 points; the basic score of the in-vehicle electromagnetic radiation evaluation index is 20 points; the basic score of the evaluation index of the polycyclic aromatic hydrocarbons content in the commonly contacted part of the vehicle is 7 points; the basic score of the evaluation index of the migratable substances content in the commonly contacted part of the vehicle is 7 points; the total score is 60 points.

[0057] 11) The in-vehicle air quality evaluation includes three modes: normal temperature, idling, and high temperature.

[0058] The evaluation indicators of the normal temperature mode include benzene (limit value is 0.06mg / m 3 ), toluene (limit value is 1mg / m 3 ), ethylbenzene (limit value is 1mg / m 3 ), xylene (limit value is 1mg / m 3 ), styrene (limit value is 0.26mg / m 3 ), formaldehyde (limit value is 0.1mg / m 3 ), acetaldehyde (limit value is 0.2mg / m 3 ) and acrolein (limit value is 0.05mg / m 3) Comprehensive evaluation of eight components, with a basic score of 16 points;

[0059] Evaluation indicators for idle mode include total carbon volatiles (limited to 3 mg / m 3 ), formaldehyde (limit value is 0.1mg / m 3 ), carbon monoxide (limit value is 10mg / m 3 ) Comprehensive evaluation of the three components, with a basic score of 6 points;

[0060] The evaluation indicators of high temperature mode include total carbon volatile matter (limited to 30mg / m 3 ), formaldehyde (limit value is 0.1mg / m 3 ) is a comprehensive evaluation of the two components, with a basic score of 4 points.

[0061] Furthermore, the evaluation method for the in-vehicle air quality is as follows: under each operating condition (three modes: normal temperature, idle speed, and high temperature), the basic score for each component to be evaluated is 2 points. If the test result of each component is less than or equal to 10% of the limit, the score is 100% of the basic score; if the test result is between 10% and 50% of the limit, the score is 50% of the basic score; if the test result is greater than or equal to 50% of the limit, the score is 0. The sampling and testing process refers to ISO 12219-1:2021 "Interior air of road vehicles - Part 1".

[0062] 12) The in-vehicle electromagnetic radiation evaluation includes four modes: stationary, constant speed driving, accelerated driving and decelerated driving.

[0063] Evaluation frequency and limit of each mode include: 1-8Hz, limit is 40000 / f 2 uT; 8-25Hz, limit is 5000 / fuT; 0.025-1.2kHz, limit is 5 / fuT; 1.2-2.9kHz, limit is 4.1uT; 2.9-57kHz, limit is 12 / fuT; 57-100kHz, limit is 12 / fuT; 0.1-3MHz, limit is 0.12uT; 3-30MHz, limit is 0.21 / f 1 / 2 uT; 30-3000MHz, the limit is 0.04uT; 3000-15000Mhz, the limit is 0.00074f 1 / 2 uT; 15GHz-300GHz, the limit is 0.092uT.

[0064] Furthermore, the evaluation method of electromagnetic radiation in the vehicle is: the basic score for stationary mode is 5 points, the basic score for uniform speed driving mode is 5 points, the basic score for acceleration driving mode is 5 points, and the basic score for deceleration driving mode is 5 points, totaling 20 points. Under various mode conditions, all indicators are lower than 50% of the limit, and the score is 100% of the basic score; all indicators are lower than the limit, and at least one is greater than or equal to 50% of the limit, and the score is 50% of the basic score; at least one is greater than or equal to the limit, and the score is 0. The test process refers to GB / T 37130-2018 "Measurement method of vehicle electromagnetic field relative to human exposure".

[0065] 13) The evaluation of the PAH content in the commonly contacted parts of the vehicle includes the evaluation of seven parts: steering wheel, passenger armrest, shift knob / handle, multi-function switch handle, seat and headrest, seat belt webbing, and multi-function screen.

[0066] 15 PAHs in the homogeneous material of each component: benzo(a)pyrene, benzo(e)pyrene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(j)fluoranthene, benzo(k)fluoranthene, The sum of the content of dibenzo(a,h)anthracene, benzo(g,h,i)perylene, indeno(1,2,3-cd)pyrene, phenanthrene, pyrene, anthracene, fluoranthene and naphthalene is limited to 30 mg / kg.

[0067] Furthermore, the evaluation method for the content of polycyclic aromatic hydrocarbons in commonly contacted parts of the vehicle is as follows: the basic score of each evaluation index is: 1 point for steering wheel, 1 point for passenger armrest, 1 point for shift knob / handle, 1 point for multi-function switch handle, 1 point for seat and headrest, 1 point for seat belt webbing, and 1 point for multi-function screen, for a total of 7 points.

[0068] The parts of the steering wheel, passenger armrest, shift knob / handle, multi-function switch handle, seat and headrest, seat belt webbing, and multi-function screen that can be touched by the human body are disassembled and tested, and the homogeneous materials are disassembled and tested. In the actual test results: the sum of the content of 15 kinds of PAHs in each component is less than or equal to 50% of the limit, and the score is 100% of the basic score; the sum of the content of 15 kinds of PAHs is between 50%-100% of the limit, and the score is 50% of the basic score; the sum of the content of 15 kinds of PAHs is greater than or equal to the limit, and the score is 0. The test process refers to QC / T 1131-2020 "Detection Method of Polycyclic Aromatic Hydrocarbons in Automotive Materials".

[0069] 14) The evaluation of the content of migratable substances in the frequently contacted parts of the vehicle includes the evaluation of seven parts: steering wheel, passenger armrest, shift knob / handle, multi-function switch handle, seat and headrest, seat belt webbing, and multi-function screen. The content limits of each element in the homogeneous material of each part are: antimony, 60mg / kg; arsenic, 25mg / kg; barium, 1000mg / kg; cadmium, 75mg / kg; chromium, 60mg / kg; lead, 90mg / kg; mercury, 60mg / kg; selenium, 500mg / kg.

[0070] Furthermore, the evaluation method for the content of migratable substances in frequently contacted parts of the vehicle is as follows: the basic score of each evaluation index is: 1 point for steering wheel, 1 point for passenger armrest, 1 point for shift knob / handle, 1 point for multi-function switch handle, 1 point for seat and headrest, 1 point for seat belt webbing, and 1 point for multi-function screen, for a total of 7 points.

[0071] The parts of the steering wheel, passenger armrest, shift knob / handle, multi-function switch handle, seat and headrest, seat belt webbing, and multi-function screen that can be touched by the human body are disassembled and tested, and the homogeneous materials are disassembled and tested. In the test results: the content index of each element of each component is lower than 50% of the limit, and the score is 100% of the basic score; all indicators are lower than the limit, and at least one is greater than or equal to 50% of the limit, and the score is 50% of the basic score; when at least one is greater than or equal to the limit, the score is 0. The test process refers to GB / T 30419-2013 "Determination of Migration Elements Antimony, Arsenic, Barium, Cadmium, Chromium, Lead, Mercury, and Selenium in Toy Materials by Inductively Coupled Plasma Atomic Emission Spectrometry".

[0072] II: Cabin Comfort Evaluation

[0073] The cabin comfort evaluation includes in-car odor sensory evaluation, in-car seat comfort evaluation, in-car ambient noise filtering evaluation, and in-car visual sensory comfort evaluation.

[0074] The basic score for the in-car odor sensory evaluation index is 10 points, the basic score for the in-car seat comfort evaluation index is 12 points, the basic score for the in-car ambient noise filtering evaluation index is 4 points, and the basic score for the in-car visual sensory comfort evaluation index is 4 points, totaling 30 points.

[0075] 21) The sensory evaluation of the in-vehicle odor is a subjective evaluation of the in-vehicle environment by personnel.

[0076] Furthermore, the in-vehicle odor sensory evaluation method is as follows: the basic score of the in-vehicle odor sensory evaluation index is 10 points; if the odor level is greater than or equal to 3.5, no score is given; if the odor level is between 3.0-3.5, the score is 50% of the basic score; if the odor level is less than or equal to 3.0, the score is 100% of the basic score.

[0077] The method for determining the odor level is as follows: The evaluation personnel requirements are: 5 people, no health risks such as rhinitis and pharyngitis, and no drinking or applying cosmetics within three days before the evaluation. Evaluation environment requirements: The site is odor-free, the vehicle is sealed for more than 16 hours, the ambient temperature is 25°C, and the humidity is 50%. The evaluation method is: 5 people enter the vehicle together, with their heads close to the headrest, and objectively evaluate the air quality in the car. If there is an odor but it is not obvious or no odor can be smelled, it will be recorded as 2.5 points; if there is an obvious odor but it is not irritating, it will be recorded as 3 points; if the odor is somewhat irritating, it will be recorded as 3.5 points; if the odor is very irritating or even unbearable, it will be recorded as 4.0 points. The evaluation rules are: remove the highest and lowest scores of the 5 people's scoring results, and take the arithmetic average of the remaining three groups of scores.

[0078] 22) The in-vehicle seat comfort evaluation is a person's subjective evaluation of the seat comfort, including a subjective evaluation of the driver's seat, the co-pilot seat, the left rear seat and the right rear seat.

[0079] Furthermore, the in-vehicle seat comfort evaluation method is as follows: the basic score of the main driver's seat comfort evaluation index is 3 points, the basic score of the co-driver's seat is 3 points, the basic score of the rear left seat is 3 points, and the basic score of the rear right seat is 3 points. Each seat position is scored according to the five weights of head support, shoulder support, back support, hip support, and thigh support, and then the sum is calculated. The scoring criteria are: comfortable, 3 points; general, 1 point; uncomfortable, 0 points.

[0080] Furthermore, the evaluation process of the comfort of the car seats needs to meet the following requirements: Personnel requirements, height: male, 170cm-185cm, female, 160cm-175cm; weight: male, 60kg-90kg; female, 40kg-70kg; others, healthy, no disability. The clothing for the evaluation is a uniform dress, single-layer cotton, and the thickness from the surface of the clothing to the skin surface shall not exceed 0.5cm. Evaluation time requirements: Monday, between 9:00-11:00 in the morning. The ambient temperature is between 15℃-30℃. Sitting posture: Sit down naturally, relax your legs, keep your back and waist close to the seat back, and lean your head against the headrest (the height of the headrest can be adjusted to a suitable position). Evaluation items: head support, shoulder support, back support, hip support, thigh support. Each item of each seat is evaluated separately, and finally added up according to the type of seat. The scoring standard is: comfortable, 0.6 points; general, 0.3 points; uncomfortable, 0 points. The evaluation team should consist of five people, including three men and two women, and the final score for each seat will be the average of the scores given by the five people.

[0081] 23) The in-car environmental noise filtering evaluation refers to the car's isolation effect on external noise, including the evaluation of the noise attenuation rate at the driver's seat headrest, the co-driver's seat headrest, the rear left seat headrest and the rear right seat headrest.

[0082] Furthermore, the basic score of the evaluation index for the driver's seat headrest is 1 point, the basic score for the front passenger seat headrest is 1 point, the basic score for the rear left seat headrest is 1 point, and the basic score for the rear right seat headrest is 1 point. According to the noise attenuation rate, if it is greater than or equal to 70%, the score is 100% of the basic score; the noise attenuation rate is between 30%-70%, the score is 50% of the basic score; the noise attenuation rate is less than or equal to 30%, and 0 points are awarded.

[0083] Furthermore, the in-vehicle environmental noise filtering evaluation process needs to meet the following requirements: a noise source is placed 10m in front of the vehicle. After the test begins, the noise decibel level 10cm in front of the geometric center of the windshield outer surface must be 80dB(A). The doors and windows of the vehicle are closed, and a noise measurement device is placed in front of the headrests of each seat. The calculation formula is: Noise attenuation rate (%) = (1-measurement result / 80dB(A)) × 100%.

[0084] 24) The evaluation of in-vehicle visual sensory comfort refers to the subjective perception of people on the color of the ambient lighting in the vehicle, including daytime visual sensory comfort and nighttime visual sensory comfort.

[0085] Furthermore, the evaluation method of the visual sensory comfort in the vehicle is: the basic score of the daytime visual sensory comfort index is 2 points, and the basic score of the nighttime visual sensory comfort index is 2 points. Each mode is evaluated separately. The evaluation method is: if the number of comfortable people is greater than or equal to 3, the score is 100% of the basic score; if the number of comfortable people is less than 3, no score is given.

[0086] Furthermore, the evaluation process of the visual sensory comfort in the car needs to meet the following requirements: Evaluation environment illumination value requirements: Daytime: vehicle external illumination value (when the lights are off) 10000Lx-20000Lx; Nighttime: vehicle external illumination value (when the lights are off) 0.001Lx-0.01Lx. Daytime mode: the lights and the interior ambient lights are turned off, nighttime mode: the lights and the interior ambient lights are turned on (without turning on the high beam and fog lights). Evaluation personnel requirements: between 25 and 40 years old, without color weakness, color blindness, cataracts, glaucoma, claustrophobia, autism and other health problems, corrected vision is 0.9-1.2. Number of people: 3 men and 3 women. Evaluation position: main driver. People enter in turn. Evaluation method: Sit down naturally, relax your legs, keep your back and waist close to the seat back, and lean your head against the headrest (the height of the headrest can be adjusted to a suitable position), then look around and make a subjective evaluation of the visual experience of the whole vehicle. Evaluation feelings are divided into: comfortable and uncomfortable.

[0087] III: Evaluation of Advanced Safety Technology Applications

[0088] In the above-mentioned advanced safety technology application evaluation, it refers to technical application projects that can ensure the health and safety of occupants. Including but not limited to driver alcohol lock, driver fatigue warning system, healthy fragrance system, in-vehicle biometric system and other advanced safety technologies. It is necessary to establish a neutral evaluation committee composed of 5 people. The manufacturer of the evaluated vehicle model will introduce the application of advanced safety technology of the vehicle model and declare the application project. The neutral evaluation committee will certify the relevant projects to see whether they are advanced safety technologies applied to the safety of occupants in the passenger compartment. If 3 or more people recognize the project as advanced safety technology, it will be passed. For each advanced safety technology confirmed by the neutral evaluation committee, 2 points will be added, with a maximum of 10 points.

[0089] Including the above-mentioned evaluations, the comprehensive score of the bio-friendliness evaluation of the road vehicle passenger compartment = Σ cabin health evaluation index score + Σ cabin comfort evaluation index score + Σ advanced safety technology application evaluation index score.

[0090] Among the above evaluation items, test dimensions such as the in-vehicle air quality evaluation index, in-vehicle electromagnetic radiation index, in-vehicle odor sensory evaluation index, in-vehicle seat comfort evaluation index, in-vehicle environmental noise filtering index, and in-vehicle visual sensory comfort evaluation index can be carried out using the whole vehicle evaluation system provided by the present invention. At the same time, the whole vehicle evaluation system can input and process data of other dimensions, analyze and organize them, and generate an evaluation report.

[0091] like Figure 2 As shown, a bio-friendliness evaluation system for a road vehicle passenger compartment includes: an evaluation system environment chamber A, a system simulation unit B, a test vehicle C, an evaluation unit D, and a central control unit E.

[0092] The evaluation system environmental chamber A is equipped with double walls. The outer wall A1 adopts an integral metal structure and has electromagnetic shielding function; the inner wall A2 adopts rock wool fiber and other materials and has sound absorption and noise reduction function; a bearing floor A3 is set inside the environmental chamber, and its bearing strength can reach more than 10 tons / square meter, which is used to carry vehicles.

[0093] The system simulation unit B includes: a hub system B1, which can match the vehicle system at a speed between 0km / h and 120km / h. The hub system B1 is set on the environmental chamber bearing ground A3, and the test vehicle C is placed on the hub system B1. The hub system motor reverses to generate electricity and stores electrical energy for the entire system; the light simulation unit B2 can simulate the sunlight spectrum, and the irradiation range is 0-500W / m 2The noise simulation unit B3 can simulate 0-150db white noise at the vehicle position; the exhaust emission system B4 can generate negative pressure to allow the exhaust gas of the car to be discharged smoothly from the interior cabin; the fresh air intake device B5 integrates an activated carbon purification device and an air heating and cooling device to provide a clean, constant-temperature air source for the environmental chamber. The system simulation unit B simulates the vehicle test working environment.

[0094] The evaluation unit D includes: a subjective evaluation unit D1, which is a human-computer interaction interface, and has subjective evaluation result recording interfaces such as seat comfort evaluation interface, subjective odor evaluation interface, and in-vehicle visual sensory comfort evaluation interface; a noise sensor D2, an electromagnetic radiation sensor D3; an in-vehicle air sampling tube D4; and data from the evaluation unit D is transmitted to the central control unit E.

[0095] The central control unit E integrates units such as data filling, report generation, signal processing, data recording, and instruction issuance. The central control unit can input and process data of other dimensions, analyze and organize them, and generate evaluation reports.

[0096] The central control unit E includes: a subjective evaluation result recording device E1, a noise signal processing recording device E2, an electromagnetic radiation signal processing recording device E3, and an in-vehicle air quality analysis module E4. The in-vehicle air quality analysis module E4 can use monitoring modules such as PID detectors, FID detectors, MS detectors, infrared detectors, electrical signal detectors, fuel cell detectors, etc., and can also integrate a sampling system to transfer the collected gas components to a laboratory for analysis.

[0097] Specifically, according to the above method, for a certain car model, the evaluation example is as follows:

[0098] The evaluation results of the in-car air quality evaluation index for this model are as follows: the evaluation results of the normal temperature mode are benzene (2 points), toluene (2 points), ethylbenzene (2 points), xylene (2 points), styrene (2 points), formaldehyde (2 points), acetaldehyde (2 points) and acrolein (2 points). The evaluation results of the idle mode are total volatile carbon (2 points), formaldehyde (2 points), and carbon monoxide (2 points); the evaluation results of the high temperature mode are total volatile carbon (2 points) and formaldehyde (2 points). The total score of the in-car air quality evaluation index is 26 points.

[0099] For this model, the electromagnetic radiation index in the car for health evaluation index, including four modes: static, constant speed driving, accelerated driving and decelerated driving. Static mode results: 1-8Hz, 0uT; 8-25Hz, 0uT; 0.025-1.2kHz, 0uT; 1.2-2.9kHz, 0uT; 2.9-57kHz, 0uT; 57-100kHz, 0uT; 0.1-3MHz, 0uT; 3-30MHz, 0uT; 30-30000MHz, 0uT; 3000-15000Mhz, 0uT; 15GHz-300GHz, 0uT. The results of uniform speed driving are as follows: 1-8Hz, 0uT; 8-25Hz, 0uT; 0.025-1.2kHz, 0uT; 1.2-2.9kHz, 0uT; 2.9-57kHz, 0uT; 57-100kHz, 0uT; 0.1-3MHz, 0uT; 3-30MHz, 0uT; 30-30000MHz, 0uT; 3000-15000Mhz, 0uT; 15GHz-300GHz, 0uT. Acceleration driving results: 1-8Hz, 0uT; 8-25Hz, 0uT; 0.025-1.2kHz, 0uT; 1.2-2.9kHz, 100uT; 2.9-57kHz, 0uT; 57-100kHz, 0uT; 0.1-3MHz, 0uT; 3-30MHz, 0uT; 30-30000MHz, 0uT; 3000-15000Mhz, 0uT; 15GHz-300GHz, 0uT. The results of deceleration driving: 1-8Hz, 0uT; 8-25Hz, 0uT; 0.025-1.2kHz, 0uT; 1.2-2.9kHz, 0uT; 2.9-57kHz, 0uT; 57-100kHz, 0uT; 0.1-3MHz, 0uT; 3-30MHz, 0uT; 30-30000MHz, 0uT; 3000-15000Mhz, 0uT; 15GHz-300GHz, 0uT. The scores are: stationary state (5 points), constant speed driving (5 points), accelerated driving (0 points) and decelerated driving (5 points). The comprehensive score of the electromagnetic radiation index in the car for the health evaluation index is 15 points.

[0100] For this model, the test results of the PAH content index of the commonly contacted parts in the car are as follows: 15 PAHs (benzo(a)pyrene, benzo(e)pyrene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(j)fluoranthene, benzo(k)fluoranthene, The sum of the contents of dibenzo(a,h)anthracene, benzo(g,h,i)perylene, indenyl(1,2,3-cd)pyrene, phenanthrene, pyrene, anthracene, fluoranthene, and naphthalene is 0. The scores are as follows: 1 point for the steering wheel, 1 point for the passenger armrest, 1 point for the shift knob / handle, 1 point for the multi-function switch handle, 1 point for the seat and headrest, 1 point for the seat belt webbing, and 1 point for the multi-function screen. The total score of the PAH content index of the commonly contacted parts in the car is 7 points.

[0101] For this model, the test results of the index of migratable substances in the commonly touched parts of the vehicle are: the content of antimony, arsenic, barium, cadmium, chromium, lead, mercury and selenium in the homogeneous materials of each component is 0. The scores are as follows: 1 point for the steering wheel, 1 point for the passenger armrest, 1 point for the shift knob / handle, 1 point for the multi-function switch handle, 1 point for the seat and headrest, 1 point for the seat belt webbing, and 1 point for the multi-function screen. The total score of the index of migratable substances in the commonly touched parts of the vehicle is 7 points.

[0102] For this model, the test result of the interior odor sensory index is: the interior odor level evaluation result is 3.3. The total score of the interior odor sensory index is 5 points.

[0103] For this model, the test results of the in-car seat comfort evaluation index are as follows: Driver's seat: head support, comfortable; shoulder support, comfortable; back support, comfortable; hip support, comfortable; thigh support, uncomfortable; Co-pilot seat: head support, comfortable; shoulder support, comfortable; back support, comfortable; hip support, comfortable; thigh support, uncomfortable; Left rear seat: head support, comfortable; shoulder support, comfortable; back support, comfortable; hip support, comfortable; thigh support, uncomfortable; Right rear seat: head support, comfortable; shoulder support, comfortable; back support, comfortable; hip support, comfortable; thigh support, average.

[0104] The scores are as follows: Driver's seat: 0.6 points for head support, 0.6 points for shoulder support, 0.6 points for back support, 0.6 points for hip support, and 0 points for thigh support; Passenger's seat: 0.6 points for head support, 0.6 points for shoulder support, 0.6 points for back support, 0.6 points for hip support, and 0 points for thigh support; Left rear seat: 0.6 points for head support, 0.6 points for shoulder support, 0.6 points for back support, 0.6 points for hip support, and 0 points for thigh support; Right rear seat: 0.6 points for head support, 0.6 points for shoulder support, 0.6 points for back support, 0.6 points for hip support, and 0.3 points for thigh support. The total score of the in-vehicle seat comfort evaluation index is 9.9 points.

[0105] For this model, the test results of the in-car environmental noise filtering index are: the main driver's seat headrest (40dB(A)), the front passenger seat headrest (40dB(A)), the rear left seat headrest (40dB(A)) and the rear right seat headrest (40dB(A)). The noise attenuation rate is: the main driver's seat headrest (50%), the front passenger seat headrest (50%), the rear left seat headrest (50%) and the rear right seat headrest (50%). The scores are: 0.5 points for the main driver's seat headrest, 0.5 points for the front passenger seat headrest, 0.5 points for the rear left seat headrest, and 0.5 points for the rear right seat headrest. The total score of the in-car environmental noise filtering index is 2 points.

[0106] For this model, the evaluation results of the in-car visual sensory comfort evaluation index are as follows: 4 people rated it comfortable during the day, and 4 people rated it comfortable at night. The daytime visual sensory comfort score is 2 points, and the nighttime visual sensory comfort score is 2 points. The total score of the in-car visual sensory comfort evaluation index is 4 points.

[0107] For this model, the manufacturer of the evaluated model introduced the application of advanced safety technology in the model and applied 15 application projects. After confirmation by the neutral evaluation committee, the two projects of driver alcohol lock and driver fatigue warning system are advanced safety technologies applied to the safety of passengers in the passenger compartment, which play a role in protecting the physical and mental health of passengers. The evaluation index of advanced safety technology application of this model is 4 points.

[0108] Based on the above evaluation, the bio-friendliness evaluation result of the passenger compartment of road vehicles of this model = the score of the cabin health evaluation index + the score of the cabin comfort evaluation index + the score of the advanced safety technology application evaluation index = (26+15+7+7)+(5+9.9+2+4)+4=79.9 points. The average score of the bio-friendliness evaluation result of the passenger compartment of road vehicles of 100 models in the industry is 65.3 points. The bio-friendliness evaluation result of the passenger compartment of road vehicles of this model is better than the industry average. Its passenger compartment is a safe, healthy and comfortable high-standard automobile cabin.

Claims

1. A method for evaluating the bio-friendliness of a road vehicle passenger compartment, characterized in that: The cockpit health evaluation, cockpit comfort evaluation and advanced safety technology application evaluation are set, with a total scoring standard of 100 points, among which the basic score of the cockpit health evaluation index is 60 points, the basic score of the cockpit comfort evaluation index is 30 points, and the basic score of the advanced safety technology application evaluation index is 10 points. The comprehensive scoring result = Σ cockpit health evaluation index score + Σ cockpit comfort evaluation index score + Σ advanced safety technology application evaluation index score.

2. The method for evaluating bio-friendliness of a road vehicle passenger compartment according to claim 1, characterized in that: The cabin health evaluation includes the evaluation of in-vehicle air quality, in-vehicle electromagnetic radiation, the evaluation of polycyclic aromatic hydrocarbons content in the commonly contacted parts in the vehicle, and the evaluation of the content of migratable substances in the commonly contacted parts in the vehicle; Among them, the basic score of the in-car air quality evaluation index is 26 points; the basic score of the in-car electromagnetic radiation evaluation index is 20 points; the basic score of the evaluation index of the polycyclic aromatic hydrocarbon content in the common contact part of the car is 7 points; the basic score of the evaluation index of the content of the migratable substances in the common contact part of the car is 7 points; The evaluation of in-vehicle air quality includes the evaluation of three modes: normal temperature, idle speed, and high temperature, with basic scores of 16 points, 6 points, and 4 points respectively; The evaluation of electromagnetic radiation in the vehicle includes evaluation of four modes: stationary, constant speed driving, accelerated driving, and decelerated driving, each with a basic score of 5 points; The evaluation of the PAH content in the commonly contacted parts of the vehicle includes the evaluation of seven parts: the steering wheel, the passenger armrest, the shift knob / handle, the multi-function switch handle, the seat and headrest, the seat belt webbing, and the multi-function screen, with a basic score of 1 point respectively; The evaluation of the content of migratable substances in frequently contacted parts of the vehicle includes the evaluation of seven components, namely the steering wheel, passenger armrest, shift knob / handle, multi-function switch handle, seat and headrest, seat belt webbing, and multi-function screen, with a basic score of 1 point each.

3. The method for evaluating bio-friendliness of a road vehicle passenger compartment according to claim 2, characterized in that: In the evaluation of in-vehicle air quality, the evaluation indicators of the normal temperature mode include the evaluation of eight components: benzene, toluene, ethylbenzene, xylene, styrene, formaldehyde, acetaldehyde and acrolein; the evaluation indicators of the idle mode include the evaluation of three components: total carbon volatiles, formaldehyde and carbon monoxide; the evaluation indicators of the high temperature mode include Evaluation of total carbon volatiles and formaldehyde; setting limits for each component Value, according to the measured value Assign points as a percentage of the value; In the evaluation of electromagnetic radiation in the vehicle, the limit values ​​are set according to the following frequency bands: 1-8Hz, 8-25Hz, 0.025-1.2kHz, 1.2-2.9kHz, 2.9-57kHz, 57-100kHz, 0.1-3MHz, 3-30MHz, 30-3000MHz, 3000-15000Mhz, 15GHz-300GHz, and the points are assigned according to the percentage of the measured value to the limit value; The evaluation of the content of polycyclic aromatic hydrocarbons in the commonly contacted parts of the vehicle includes the evaluation of 15 kinds of polycyclic aromatic hydrocarbons: benzo(a)pyrene, benzo(e)pyrene, benzo(a)anthracene, benzo(b)fluoranthene, benzo(j)fluoranthene, benzo(k)fluoranthene, For dibenzo(a,h)anthracene, benzo(g,h,i)perylene, indeno(1,2,3-cd)pyrene, phenanthrene, pyrene, anthracene, fluoranthene and naphthalene, a limit is set for the sum of the contents and points are assigned according to the percentage of the measured value to the limit; The evaluation of the content of migratable substances in the frequently contacted parts of the vehicle includes the evaluation of the following elements: antimony, arsenic, barium, cadmium, chromium, lead, mercury, and selenium. Limit values ​​are set for each element, and points are assigned according to the percentage of the measured value to the limit value.

4. The method for evaluating bio-friendliness of a road vehicle passenger compartment according to claim 1, characterized in that: The cabin comfort evaluation includes the sensory evaluation of in-vehicle odor, the comfort evaluation of in-vehicle seats, the evaluation of in-vehicle environmental noise filtering, and the evaluation of in-vehicle visual sensory comfort; Among them, the basic score of the in-car odor sensory evaluation index is 10 points, the basic score of the in-car seat comfort evaluation index is 12 points, the basic score of the in-car environmental noise filtering evaluation index is 4 points, and the basic score of the in-car visual sensory comfort evaluation index is 4 points; The sensory evaluation of the in-vehicle odor is scored according to the odor level; The in-vehicle seat comfort evaluation includes the evaluation of the comfort of the main driver's seat, the co-driver's seat, the left rear seat and the right rear seat. The basic score of the evaluation index of each seat is 3 points. Each seat is scored according to the five weights of head support, shoulder support, back support, hip support and thigh support, and then the score is summed; The in-vehicle environmental noise filtering evaluation includes the evaluation of the noise attenuation rate at the driver's seat headrest, the co-driver's seat headrest, the rear left seat headrest and the rear right seat headrest. The basic score of the evaluation index at each location is 1 point, and points are assigned according to the noise attenuation rate. Noise attenuation rate (%) = (1-measurement result / 80dB (A)) × 100%; The evaluation of the visual sensory comfort in the car includes the evaluation of daytime visual sensory comfort and nighttime visual sensory comfort. The basic score of the evaluation index is 2 points. The evaluation method is: if the number of comfortable people is greater than or equal to 3, the score is 100% of the basic score; if the number of comfortable people is less than 3, no score is awarded.

5. The method for evaluating bio-friendliness of a road vehicle passenger compartment according to claim 1, characterized in that: The advanced safety technology application evaluation is carried out by a neutral evaluation committee. Each time an advanced safety technology application project is confirmed, 2 points will be awarded, with a maximum of 10 points. Advanced safety technology application projects refer to technical application projects that can ensure the health and safety of occupants.

6. An evaluation system for the bio-friendliness evaluation method for a road vehicle passenger compartment according to any one of claims 1 to 5, characterized in that: It includes the evaluation system environment chamber, system simulation unit, test vehicle, evaluation unit, and central control unit; The evaluation system environment chamber is provided with double walls, the outer wall is made of metal structure and has electromagnetic shielding function; the inner wall is made of rock wool fiber material and has sound absorption and noise reduction function; a bearing ground is provided inside the environment chamber for bearing the test vehicle; The system simulation unit includes: a rotating hub system, which is arranged on the bearing ground of the environmental chamber, and the test vehicle is placed on the rotating hub system; a light simulation unit, which simulates the sunlight spectrum, and the irradiation range is 0-500W / m 2 ; Noise simulation unit, simulating 0-150db white noise at the vehicle position; The exhaust system generates negative pressure to allow the exhaust gas of the car to be discharged smoothly from the cabin; the fresh air intake device provides a clean air source with a constant temperature for the environmental chamber; The evaluation unit includes: a subjective evaluation unit, a human-computer interaction interface, a seat comfort evaluation interface, an odor evaluation interface, and an in-vehicle visual sensory comfort evaluation interface; Noise sensors, electromagnetic radiation sensors; In-vehicle air sampling tube; The central control unit is connected to the evaluation unit, and includes: a subjective evaluation result recording device, a noise signal processing recording device, an electromagnetic radiation signal processing recording device, and an in-vehicle air quality analysis module.

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