CN112285283A - Subjective evaluation method for air quality in vehicle - Google Patents
Subjective evaluation method for air quality in vehicle Download PDFInfo
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- CN112285283A CN112285283A CN202011055935.1A CN202011055935A CN112285283A CN 112285283 A CN112285283 A CN 112285283A CN 202011055935 A CN202011055935 A CN 202011055935A CN 112285283 A CN112285283 A CN 112285283A
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- 238000011156 evaluation Methods 0.000 title claims abstract description 79
- 230000003068 static effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000007613 environmental effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000012360 testing method Methods 0.000 claims description 26
- 238000004378 air conditioning Methods 0.000 claims description 7
- 230000035807 sensation Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000005034 decoration Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000006872 improvement Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 235000019645 odor Nutrition 0.000 description 56
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 230000002452 interceptive effect Effects 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 235000019615 sensations Nutrition 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 206010052128 Glare Diseases 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008693 nausea Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000007330 shade avoidance Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention aims to provide a more reasonable and comprehensive subjective evaluation method for the air quality in the vehicle, so as to reflect the real feeling of a client on the smell in the vehicle using process and provide reference for the improvement of the air quality in the vehicle. The subjective evaluation method of the air quality in the vehicle comprises the following steps: firstly, a vehicle to be detected is subjected to door sealing and standing for a preset time under a preset environmental condition, and then an odor evaluator enters the vehicle to evaluate the quality of air in the vehicle; the key point is that the odor evaluator evaluates the quality of air in the automobile respectively when the automobile is in a static state, an idling state and a state of starting an air conditioner and in a dynamic state. By evaluating the quality of air in the automobile in different states, different occasions and environments where a customer uses the automobile can be simulated, so that the evaluation result is closer to the real situation.
Description
Technical Field
The invention belongs to the technical field of automobile odor tests, and particularly relates to a subjective evaluation method for air quality in an automobile.
Background
With the further development of the domestic automobile industry, consumers pay more and more attention to the safety performance of automobiles, in the past, the consumers mainly regard the automobiles as transportation means, and the automobiles become mobile places which consume most time except homes for many consumers nowadays, so that the requirements of the consumers on the automobiles are no longer only met for convenience of traveling, the health concern is increased day by day, and particularly the air quality problem in the automobiles is more and more concerned by the users.
Under the environment of certain temperature and humidity, due to the emission of non-metal interior trim parts (materials) of the automobile and other reasons, harmful and unpleasant gases enter air in the automobile, few consumers send the automobile to a detection mechanism to detect harmful substances in the automobile, but the odor in the automobile is the most direct subjective feeling of consumption, and the peculiar smell in the automobile inevitably causes the complaint of the consumers. At present, each large host factory controls the smell of the whole vehicle, wherein the subjective evaluation of the smell of the whole vehicle is an essential link in the development process of the performance of the whole vehicle.
At present, subjective evaluation of air quality in a vehicle is carried out by most host computer factories according to own enterprise standards, and the objective vehicle is stored in a sealed manner at a certain environmental temperature for a period of time, and then enters the vehicle by an odor evaluator to describe the odor of the air in the vehicle. Because the method is used for evaluating the automobile in a static state, the evaluation mode cannot comprehensively reflect the odor state of the current automobile in the using process, such as the odor problem of the automobile in the air conditioner starting and running states, and particularly the odor problem is more serious when the air conditioner is started.
Disclosure of Invention
The invention aims to provide a more reasonable and comprehensive subjective evaluation method for the air quality in the vehicle, so as to reflect the real feeling of a client on the smell in the vehicle using process and provide reference for the improvement of the air quality in the vehicle.
The subjective evaluation method of the air quality in the vehicle comprises the following steps: firstly, a vehicle to be detected is subjected to door sealing and standing for a preset time under a preset environmental condition, and then an odor evaluator enters the vehicle to evaluate the quality of air in the vehicle; the key point is that the odor evaluator evaluates the quality of air in the automobile respectively when the automobile is in a static state, an idling state and a state of starting an air conditioner and in a dynamic state. By evaluating the quality of air in the automobile in different states, different occasions and environments where a customer uses the automobile can be simulated, so that the evaluation result is closer to the real situation.
Specifically, the odor evaluator evaluates the air quality in the vehicle in three aspects of odor intensity, odor tendency and odor sensation so as to comprehensively reflect the subjective feeling of the vehicle interior personnel on the air quality in the vehicle and provide a reference basis for subsequent improvement.
Furthermore, the detected vehicle is a new vehicle which is off-line for 4 weeks and is not subjected to any artificial modification for influencing the air quality in the vehicle, so that the influence of the use or modification of the detected vehicle on the evaluation result of the air quality in the vehicle is avoided.
Further, the environment requirements of the vehicle under test at the time of detection are as follows: the environmental temperature is higher than 25 ℃, and the ambient background odor is less than or equal to 2.0 grade; the surrounding has no odor generating source.
Further, in a test preparation stage, the tested vehicle is placed in a test environment, the covering on the inner decoration surface of the tested vehicle is removed, and the covering is moved out of the test environment; completely opening a door and a window which can be opened by a detected vehicle, opening a sun shield and/or a luggage compartment rear shielding curtain in the vehicle, and standing for not less than 2-4 hours; and then completely closing all doors and windows of the detected vehicle, setting the ventilation mode as internal circulation, closing all equipment related to air exchange outside the vehicle, and keeping the detected vehicle in a closed state for 4 hours.
Furthermore, in order to ensure the fairness of the evaluation results, three odor evaluators enter the vehicle at the same time during each evaluation, the evaluation is completed within a preset time and the vehicle exits from the vehicle, and each odor evaluator is arranged on the front and back passenger seats during the evaluation; when the evaluation results of three odor evaluators dispute, the vehicle to be detected is sealed for a preset minute, and the other three odor evaluators evaluate the vehicle, and finally the evaluation results of 2 times are comprehensively considered.
The specific evaluation procedure was as follows: firstly, evaluating the smell in the automobile by a smell evaluating person when the automobile is in a static state; after the odor evaluation in the static state is finished, opening all doors and windows of the vehicle, ventilating the air in the vehicle, sealing the detected vehicle after the odor in the vehicle is less than or equal to 2.0 level, enabling the detected vehicle to enter an idle speed and start an air conditioning state, enabling an odor evaluator to enter the detected vehicle after a preset time, and evaluating the odor in the vehicle under different air conditioning working modes respectively; after the odor evaluation of the idling and air-conditioning-on state is finished, the air conditioner is closed, all doors and windows of the detected vehicle are opened, the air in the vehicle is ventilated, the detected vehicle is sealed after the odor in the vehicle is less than or equal to 2.0 grade, an odor evaluator opens all electrical equipment which can be started in the vehicle and drives the vehicle for a preset time under a test environment, and finally the quality of the air in the vehicle is evaluated under a dynamic state.
The subjective evaluation method for the air quality in the vehicle is simple to implement, can comprehensively reflect the air quality in the vehicle, and provides reference for improvement of the air quality in the vehicle.
Drawings
FIG. 1 is a flow chart of the subjective evaluation method of the air quality in the vehicle.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Example 1:
the embodiment provides a subjective evaluation method for air quality in a vehicle, which is implemented by odor evaluators trained professionally and having an odor evaluation experience of parts or materials for more than 1 year (including 1 year).
The subjective evaluation method for the air quality in the vehicle in the embodiment specifically comprises the following steps:
firstly, preparing a test vehicle:
the detected vehicle is a new vehicle which is off-line for 4 weeks and is not subjected to any artificial modification for influencing the air quality in the vehicle by a seller or a user, namely, any artificial modification for influencing the air quality in the vehicle cannot be carried out before the test. In addition, adsorption or purification devices that affect the results of the test cannot be temporarily installed in the subject vehicle unless these devices are necessary according to the production requirements.
II, testing environment and testing method:
1. ambient temperature: the ambient temperature was above 25 ℃ and the day's maximum temperature and the temperature at the time of evaluation were recorded. When the ambient temperature is lower than 25 ℃, the test is not carried out, and the test is not carried out in abnormal weather such as rainy days and the like.
2. Environmental background odor: not more than 2.0 grade.
3. The test site is an open site in an open environment, and no peculiar smell generating source exists around the test site, such as a coating plant, a paint plant, a warehouse and the like;
4. the illumination requirement is as follows: the detected vehicle needs uniform illumination and no local shade avoidance phenomenon.
Thirdly, testing steps:
1. the subject vehicle is placed in a test environment, the cover (such as a protective film of a factory seat, a carpet, a sun visor, and the like) on the interior surface of the subject vehicle is removed, and the cover is moved outside the test environment.
2. The door and the window which can be opened by the detected vehicle are completely opened, and the sun shield and/or the luggage compartment rear shielding curtain (aiming at the SUV) in the vehicle are opened, and the static placing time is not less than 2-4 hours.
3. And all doors and windows of the detected vehicle are completely closed, the ventilation mode is set as internal circulation, all equipment related to air exchange outside the vehicle is closed, the sealing performance of the whole vehicle is ensured, and the detected vehicle is kept in a closed state for 4 hours.
4. Evaluation of odor of vehicle to be tested:
a. evaluation of test environment background: the test environment was evaluated for odor intensity, odor tendency, and odor sensation by odor evaluators, and the evaluation results were recorded.
b. Evaluating the smell in the vehicle in a static state: opening the door of the checked vehicle, enabling three odor evaluators to enter the vehicle, quickly closing the door, and exiting the vehicle after evaluation is completed; the method comprises the following specific steps:
the number of evaluated persons: 3 people enter the vehicle at the same time; when the evaluation results of 3 persons are disputed, the closed state is closed for 20 minutes, the evaluation is carried out again by other 3 odor evaluators, and the final results comprehensively consider the evaluation results of two times.
Evaluation position: one for each of the primary and secondary driver seats and 1 in the rear row.
Evaluation time: evaluation was completed within 30 s.
And if the evaluation result of the round is unqualified, the evaluation is finished, the evaluation is carried out again after the modification, and if the evaluation result of the round is qualified, the step c is continuously executed.
c. And (3) idling and starting air-conditioned vehicle interior odor evaluation:
after the odor evaluation in the static state is finished, all doors and windows of the vehicle are opened, air in the vehicle is exchanged, the detected vehicle is sealed after the odor in the vehicle is less than or equal to 2.0 level, the detected vehicle enters an idle speed and an air conditioning state is started, an odor evaluator enters the detected vehicle after 20 minutes, and the odor in the vehicle is evaluated in different air conditioning working modes respectively as follows:
the number of evaluated persons: 3 people enter the vehicle at the same time; when the evaluation results of 3 persons are disputed, the closed state is closed for 20 minutes, the evaluation is carried out again by other 3 odor evaluators, and the final results comprehensively consider the evaluation results of two times.
Evaluation position: 1 person each in the primary and secondary driver seats and 1 person in the rear row.
Evaluation time: evaluation of each pattern was completed within 5 minutes.
Air-conditioning mode:
i, cooling mode (air conditioner temperature is adjusted to be lowest): and A/C on, the air outlet is in a face blowing mode, the air quantity is respectively in a lowest gear and a middle gear, and the circulation mode is respectively in inner circulation and outer circulation.
Ii, heating mode (air conditioner temperature is adjusted to be maximum): the heating mode is started, the air outlet mode is a foot blowing mode and a face blowing mode, the air quantity is respectively the lowest gear and the middle gear, and the circulation mode is respectively the inner circulation and the outer circulation.
If the evaluation result of the round is unqualified, the evaluation is finished, and if the evaluation result of the round is qualified, the step d is continued to be carried out;
d. evaluation of odor under dynamic conditions:
after the odor evaluation of the idling and air-conditioning-on state is finished, the air conditioner is closed, all doors and windows of the detected vehicle are opened, the air in the vehicle is ventilated, the detected vehicle is sealed after the odor in the vehicle is less than or equal to 2.0 grade, an odor evaluator opens all electrical equipment which can be opened in the vehicle and drives the vehicle for a preset time under a test environment, and finally the quality of the air in the vehicle is evaluated under a dynamic state, wherein the specific steps are as follows:
the number of evaluated persons: 3 people enter the vehicle at the same time; when the evaluation results of 3 persons are disputed, the closed state is closed for 20 minutes, the evaluation is carried out again by other 3 odor evaluators, and the final results comprehensively consider the evaluation results of two times.
Evaluation position: 1 person each in the primary and secondary driver seats and 1 person in the rear row.
Evaluation time: evaluation of each pattern was completed within 10 minutes.
After the evaluation of the round is finished, the evaluation is finished, and the evaluation result is recorded.
Fourthly, evaluation results:
odor ratings were determined according to table 1 below:
table 1: description of odor classes
| Grade | Strength of smell |
| Grade 1 score | Has no odor |
| Grade 1.5 | Between 1 and 2 levels |
| Grade 2 scoring | Odorous, but non-interfering, odors |
| Grade 2.5 | Between 2 and 3 levels |
| Grade 3 scoring | Has obvious smell but no interfering smell |
| Grade 3.5 | Between 3 and 4 stages |
| Grade 4 scoring | Interfering odor classes |
| Grade 4.5 | Between 4 and 5 grades |
| Grade 5 scoring | Has strong interfering smell |
| Grade 5.5 | Between 5 and 6 grades |
| Grade 6 grading | Has intolerable odor |
The final rating result is the maximum value, and if the evaluation result shows 3.5 grades and 4.0 grades, the final rating result is 4.0 grades;
the odor propensity profile may be as shown in, but is not limited to, table 2.
Table 2: description of odor tendency
Description of the odor sensation:
it can be described in terms of freshness, headache, dizziness, nausea, cough, glare, chest tightness, etc.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the invention is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A subjective evaluation method of air quality in a vehicle comprises the steps that firstly, a vehicle to be detected is subjected to closed vehicle door standing for preset time under preset environmental conditions, and then an odor evaluator enters the vehicle to evaluate the air quality in the vehicle; the method is characterized in that the odor evaluator evaluates the quality of air in the automobile respectively in a static state, an idling state and a state of starting an air conditioner and a dynamic state.
2. The subjective evaluation method for the air quality in the vehicle according to claim 1, wherein the odor evaluator evaluates the air quality in the vehicle in terms of three aspects of odor intensity, odor tendency, and odor sensation.
3. The method according to claim 1 or 2, wherein the vehicle to be inspected is a new vehicle which is off-line for 4 weeks and is not modified by any person to affect the quality of air in the vehicle.
4. The subjective evaluation method for the in-vehicle air quality according to claim 1 or 2, wherein the environmental requirements of the vehicle under test at the time of detection are as follows: the environmental temperature is higher than 25 ℃, and the ambient background odor is less than or equal to 2.0 grade; the surrounding has no odor generating source.
5. The subjective evaluation method for the air quality in the vehicle according to claim 4, wherein in the test preparation stage, the vehicle to be tested is placed in a test environment, the covering on the inner decoration surface of the vehicle to be tested is removed, and the covering is moved out of the test environment; completely opening a door and a window which can be opened by a detected vehicle, opening a sun shield and/or a luggage compartment rear shielding curtain in the vehicle, and standing for not less than 2-4 hours; and then completely closing all doors and windows of the detected vehicle, setting the ventilation mode as internal circulation, closing all equipment related to air exchange outside the vehicle, and keeping the detected vehicle in a closed state for 4 hours.
6. The subjective evaluation method for the air quality in the vehicle according to claim 1 or 2, wherein three odor evaluators enter the vehicle at the same time at each evaluation, the evaluation is completed within a preset time and the vehicle exits, and each odor evaluator is arranged on the primary and secondary drivers' seats at the evaluation and is arranged behind the primary and secondary odor evaluators; when the evaluation results of three odor evaluators dispute, the vehicle to be detected is sealed for a preset minute, and the other three odor evaluators evaluate the vehicle, and finally the evaluation results of 2 times are comprehensively considered.
7. The subjective evaluation method of air quality in a vehicle according to claim 6, characterized in that the odor in the vehicle is evaluated by an odor evaluator first when the vehicle is in a static state; after the odor evaluation in the static state is finished, opening all doors and windows of the vehicle, ventilating the air in the vehicle, sealing the detected vehicle after the odor in the vehicle is less than or equal to 2.0 level, enabling the detected vehicle to enter an idle speed and start an air conditioning state, enabling an odor evaluator to enter the detected vehicle after a preset time, and evaluating the odor in the vehicle under different air conditioning working modes respectively; after the odor evaluation of the idling and air-conditioning-on state is finished, the air conditioner is closed, all doors and windows of the detected vehicle are opened, the air in the vehicle is ventilated, the detected vehicle is sealed after the odor in the vehicle is less than or equal to 2.0 grade, an odor evaluator opens all electrical equipment which can be started in the vehicle and drives the vehicle for a preset time under a test environment, and finally the quality of the air in the vehicle is evaluated under a dynamic state.
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| CN115616155A (en) * | 2022-10-12 | 2023-01-17 | 北京理工大学 | Tracer gas method for measuring ventilation rate of passenger car cabin |
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| CN115616155A (en) * | 2022-10-12 | 2023-01-17 | 北京理工大学 | Tracer gas method for measuring ventilation rate of passenger car cabin |
| CN115616155B (en) * | 2022-10-12 | 2024-05-10 | 北京理工大学 | Trace gas method for measuring ventilation rate of passenger car cabin |
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Application publication date: 20210129 |