Simulation cockpit, test system and automobile part smell detection method

Abstract

The invention belongs to the field of air quality of automobile parts, and particularly relates to a simulation cockpit, a test system and an automobile part smell detection method. The simulation cockpit is connected with a detection device, a data association function is opened, the simulation cockpit test system is jointly formed, all parts are fixed in the simulation cockpit by simulating the actual loading state, TVOC detection and synchronous artificial smell sniffing are conducted on the air quality in the cockpit, and the detection accuracy of the simulation cockpit is improved. According to the method, data association can be carried out on assembly odor characteristics of all parts and TVOC content, the function of monitoring the emission amount of the TVOC of the parts in real time in the heating process of a simulation cockpit is achieved, the technical barrier between the TVOC of the parts and the odor of the parts is broken through, the emission situation of the TVOC of the parts in the actual use process of a vehicle is effectively predicted and evaluated, and the reliability of the vehicle is improved. The parts are developed in a targeted mode in advance, and the odor emission risk of enterprises in the whole vehicle and part mass production stage is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the field of air quality of automobile parts, and in particular relates to a simulated cockpit, a test system and an automobile parts odor detection method. Background Art

[0002] With the development of society, people's lives are increasingly closely related to passenger vehicles. In recent years, consumers' attention to in-car driving health has continued to rise. National regulatory authorities have also strengthened the management of automobile environmental protection from the perspective of policies and regulations, and have successively issued a series of standards such as the "Guidelines for Passenger Car Indoor Air Quality Evaluation" (GB / T27630-2011). Domestic vehicle manufacturers have also formulated corresponding corporate standards to manage VOC and odor of the whole vehicle and VOC and odor of parts. It is precisely because of the common concern of the state, enterprises and consumers for optimizing the in-car air quality that the rapid development of in-car air quality management in the automotive industry has been promoted.

[0003] According to the current testing standards and methods commonly used in the industry, the odor evaluation of automotive parts generally uses the bag method (100L-2000L bag) or the box method (1m 3), put the parts assembly into a fixed container and seal it, put the fixed container into an oven for heating and emitting, and then conduct odor evaluation or VOC detection on the air in the container. However, whether it is the bag method or the box method, there are two technical problems that cannot be really solved. The first problem is that the current detection method cannot truly simulate the state of the tested parts when they are actually loaded on the vehicle. For example, the seat is in the center of the car in the actual loading state. During the daily use of the vehicle, the position where the sun is directly exposed is the headrest, cushion and backrest of the seat. Therefore, the heating temperature of this part is usually very high, even reaching more than 50 degrees Celsius. The lower part of the seat is usually not exposed to direct sunlight, so the heating temperature of this part is usually 23 degrees Celsius at normal temperature. Different heating temperatures are strongly correlated with the volatile organic compound (TVOC) emissions of various parts of the components, that is, the higher the temperature, the greater the TVOC emission. Regardless of the bag method or the box method, when the heating temperature is usually constant (such as 45 degrees Celsius) for 2 hours, due to the limitation of the container itself, the parts are basically in a state of uniform heating in the bag or box. Such test results are quite different from the actual state of the parts, and it is impossible to effectively predict and evaluate the TVOC emission of the parts during the actual use of the vehicle. The second problem is that the volume of the bag method or the box method is different from the actual volume of the vehicle cockpit, and the difference in volume leads to insufficient accuracy of the test results. Generally speaking, the internal space volume of the cockpit of a passenger car is 3 cubic meters, and all interior parts are arranged and assembled in this 3 cubic meter space according to the vehicle design plan. In the actual use of the vehicle, the TVOC emitted by each component is also volatilized in this 3 cubic meter cockpit, forming a stable and balanced TVOC substance concentration. However, whether it is the bag method or the box method, the volume cannot reach 3 cubic meters. Even when the bag method is tested, the appropriate experimental container is selected from 100L-2000L bags according to the size of the parts. For parts, containers of different volumes will result in large differences in the concentration equilibrium of TVOC substances emitted by the parts. At this time, even if the detected TVOC concentration is converted into a unified measurement unit (such as mg / m 3 ), the test results of the bag method and the box method also have irreparable systematic errors with the actual vehicle status. This systematic error will have a very large impact on the accuracy and uniformity of the test results, and will directly affect the reliability of the test results. At the same time, under the existing test methods, it is impossible to simultaneously perform TVOC testing and artificial odor identification on the air quality emitted by parts. Summary of the invention

[0004] The purpose of the present invention is to propose a simulated cockpit, a simulated cockpit test system and an automobile parts odor detection method based on the simulated cockpit system. By designing a set of simulated cockpit systems, the state of each component in actual use of the vehicle is effectively simulated, and the data of the assembly odor characteristics of each component and the TVOC content are associated by detection means, and the function of real-time monitoring of the TVOC emission of the components during the heating process of the simulated cockpit is realized, breaking through the technical barriers between the TVOC of the components and the odor of the components, effectively predicting and evaluating the TVOC emission of the components during the actual use of the vehicle, and carrying out targeted development of the components in advance, effectively reducing the odor emission risk of the enterprise in the mass production stage of the whole vehicle and components. In this way, the precise control of the odor of the components is achieved, and the whole vehicle production enterprises are guided to quickly and accurately implement the improvement of the air quality in the car, and meet the Chinese consumers' yearning for a better driving experience.

[0005] The technical solution adopted by the present invention to solve this problem is:

[0006] A simulated cockpit comprises: a body frame, a chassis frame, a cabin roof, a bulkhead, a cabin bottom and wheels. The cabin roof, the bulkhead and / or the cabin bottom are provided with an environmental detection component and an assembly frame for assembling parts to be detected. A transparent door is provided on one side of the cabin wall. When the door is closed, the cockpit is in a fully enclosed state as a whole. A plurality of detection pipelines for connecting detection equipment and artificial odor identification and which can be opened and closed freely are reserved on the cabin wall.

[0007] In the above technical solution, the cabin door is a movable cabin door or a quick-detachable cabin door.

[0008] In the above technical solution, the environment detection component includes a temperature sensor.

[0009] In the above technical solution, the detection equipment includes one or more of TVOC monitoring equipment, formaldehyde monitoring equipment, PM2.5 monitoring equipment, and PM10 monitoring equipment.

[0010] In the above technical solution, both the inner and outer walls of the cockpit are made of smooth, lightweight, high temperature resistant (50° C.), and odorless materials.

[0011] In the above technical solution, a wheel drive mechanism for driving the wheels to move and a power interface for charging and using an external power supply are provided in the cockpit. The wheel drive mechanism includes a wheel drive assembly and a remote control drive assembly. Both the wheel drive assembly and the remote control drive assembly can control the wheel motor. The remote control drive assembly includes a remote control, and personnel can control it externally through the remote control.

[0012] The second inventive object of the present invention is to provide a simulated cockpit test system, including the simulated cockpit and detection equipment described above, connecting the simulated cockpit and the detection equipment, and opening up the data association function to jointly constitute a simulated cockpit test system.

[0013] The third invention objective of the present invention is to provide a method for detecting odor of automobile parts based on a simulated cockpit test system, comprising the following steps:

[0014] S1. Connect the simulated cockpit with the TVOC monitoring equipment and open the data association function to form a simulated cockpit test system;

[0015] S2. Move the simulated cockpit to the vehicle VOC testing room. After sealing the simulated cockpit, use TVOC monitoring equipment to test the air quality inside the simulated cockpit. The TVOC should be less than 10mg / m 3 The test can be carried out. Otherwise, use alcohol to wipe and clean the interior of the simulated cockpit. Repeat the operation until the TVOC content in the simulated cockpit is less than 10mg / m 3 ;

[0016] S3. Remove all coverings from the parts to be tested, fix them inside the simulated cockpit with reference to the actual loading position and direction, and ensure that they are consistent with the actual loading status;

[0017] S4. Close the cabin door, seal the simulated cockpit, turn on the TVOC monitoring equipment, and monitor the TVOC emission inside the simulated cockpit in real time;

[0018] S5. Start normal temperature test and high temperature test;

[0019] S6. Repeat the above steps S1-S5 for all target parts that may affect the air quality in the vehicle, and obtain the normal temperature odor evaluation result Qn, normal temperature TVOC value TVOCn, high temperature odor evaluation result qn, and normal temperature TVOC value tvocn of each part;

[0020] S7. All data will be organized and summarized into statistical tables, which can clearly show the odor evaluation results and TVOC emissions of each component at different temperatures. Components with poor odor performance and high TVOC values ​​will be treated as key control components for further management analysis.

[0021] In the above technical solution, the automobile parts odor detection method also includes step S8. For the key controlled parts identified in step S7, a test is performed regularly according to the above steps S1-S7 to observe the odor and TVOC emission change curves of these parts. Once a batch of products has a significant fluctuation in odor or TVOC, it means that the factors of people, machines, materials, methods, and environment of the batch of parts have changed. At this time, the raw materials, production processes, packaging, transportation, storage, etc. of each target part are monitored to find the factors affecting the product odor and TVOC emission, and promote improvements. After the improvement is completed, the odor and TVOC of the part are re-tested, and the improvement effect is verified by comparing with the change curve of daily monitoring.

[0022] In the above technical solution, for the identified key controlled parts, if it is necessary to further analyze which components or raw materials affect the odor and TVOC of the parts assembly, the parts are split into individual components and raw materials, and the odor evaluation and TVOC detection are carried out according to the above steps S1-7, respectively, to find the key components or raw materials that affect the odor and TVOC emission of the parts assembly, and then improve and verify the components or raw materials in the form of step S8; if further component analysis is performed on TVOC, it is necessary to collect benzene substances through the TENAX sampling tube and aldehydes and ketones through the DNPH sampling tube while performing odor evaluation on the air in the simulated cockpit, and collect air samples in the simulated cockpit. After the sample collection is completed, when the collected air sample is analyzed using GC-MS equipment in the analytical laboratory, it is necessary to identify and analyze all the peaks of the chromatographic column, and introduce the sample gas into the MS detector at the end of the chromatographic column, and finally obtain the full spectrum analysis results of the air sample.

[0023] In the above technical scheme, the test method of the normal temperature test is: after keeping the simulated cockpit at a temperature of 25°C for 16 hours, 5 professionally trained odor evaluators respectively perform artificial odor odor identification on the air inside the simulated cockpit through the artificial odor odor identification port reserved on the outer wall of the simulated cockpit; the average score of the 5 evaluators is the evaluation result Q1 of the odor intensity, odor pleasantness and other indicators of the component; at the same time, the test result of the TVOC monitoring equipment is read to obtain the normal temperature TVOC value TVOC1 of the component; subsequently, the above steps S1-5 are repeated for all the object components that will affect the air quality in the car, and the normal temperature odor evaluation result Qn and the normal temperature TVOC value TVOCn of each component are obtained.

[0024] In the above technical scheme, the test method of the high temperature test is as follows: after completing the normal temperature test, the simulated cockpit is kept in a closed state and the TVOC monitoring equipment is monitored in real time. After being kept at a temperature of 45°C for 4 hours, 5 professionally trained odor evaluators respectively perform artificial odor odor identification on the air inside the simulated cockpit through the artificial odor odor identification port reserved on the outer wall of the simulated cockpit; the average score of the 5 evaluators is the evaluation result q1 of the odor intensity, odor pleasantness and other indicators of the component. At the same time, the test results of the TVOC monitoring equipment are read to obtain the TVOC value tvoc1 of the component at normal temperature; the above steps S1-5 are repeated for all the object components that will affect the air quality in the car, and the high temperature odor evaluation result qn and the normal temperature TVOC value tvocn of each component are obtained.

[0025] The advantages and positive effects of the present invention are as follows: by simulating the actual loading state of each component and fixing it in a simulated cockpit, the present invention performs TVOC detection and synchronous artificial odor sniffing on the air quality in the cabin, data correlation can be made between the assembly odor characteristics of each component and the TVOC content, and the function of real-time monitoring of the TVOC emission of components during the heating process of the simulated cockpit can be realized, thus breaking through the technical barrier between the TVOC of components and the odor of components, effectively predicting and evaluating the TVOC emission of components during the actual use of the vehicle, carrying out targeted development of components in advance, and effectively reducing the risk of odor emission of enterprises during the mass production stage of complete vehicles and components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0027] Figure 1 is a stereogram of the simulated cockpit in Example 1;

[0028] Figure 2 is a front view of the simulated cockpit in Example 1;

[0029] Figure 3 yes Figure 2 Main view with the middle door open;

[0030] Figure 4 is a side view of the simulated cockpit in Example 1;

[0031] Figure 5 This is a flow chart of Example 3.

[0032] In the figure: 1 - body frame; 2 - chassis frame; 3 - cabin roof; 4 - bulkhead; 5 - wheels; 6 - cabin door. DETAILED DESCRIPTION

[0033] First of all, it should be noted that the specific structure, features and advantages of the present invention will be specifically described below by way of example, but all descriptions are only for illustration and should not be understood as limiting the present invention in any way. In addition, any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature displayed or implied in the drawings, can still be combined or deleted between these technical features (or their equivalents) to obtain more other embodiments of the present invention that may not be directly mentioned in this document. In addition, in order to simplify the drawings, the same or similar technical features may be marked only in one place in the same drawing.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "fixation", "screwing" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The present invention is described in detail below with reference to the accompanying drawings.

[0035] Embodiment 1:

[0036] A simulated cockpit comprises: a body frame 1, a chassis frame 2, a cabin roof 3, a bulkhead 4, a cabin bottom and wheels 5. The cabin roof 3, the bulkhead 4 and / or the cabin bottom of the cockpit are provided with an environmental detection component and an assembly frame for assembling parts to be detected. A transparent door 6 is provided on one side of the cabin wall 4. When the door 6 is closed, the cockpit is in a fully enclosed state as a whole. A plurality of detection pipelines for connecting detection equipment and artificial odor detection and which can be opened and closed freely are reserved on the bulkhead 4.

[0037] In this embodiment, a simulated car cockpit with a sense of technology and texture is designed, including a body frame, a chassis frame, a cabin roof, a bulkhead, a cabin bottom and wheels. An environmental detection component is arranged on the cabin roof, the bulkhead, and / or the cabin bottom of the cockpit for detecting the environment in the cockpit; an assembly frame for assembling parts to be detected is arranged on the cabin roof, the bulkhead, and / or the cabin bottom of the cockpit for installing the parts to be detected; a number of groups of detection pipelines for connecting the detection equipment and artificial odor smelling and can be freely switched on the bulkhead are reserved, a part of the detection pipeline is used to realize the connection between the simulated cockpit and the detection equipment, and the other part of the detection pipeline is used for artificial odor smelling; a transparent door is arranged on one side of the bulkhead of the cockpit for opening the cockpit and facilitating the staff outside the cabin to check the situation inside the cabin.

[0038] By simulating the actual loading status of each component and fixing it in the simulated cockpit, and conducting TVOC detection and synchronous artificial odor identification on the air quality in the cabin, it is possible to correlate the data of the assembly odor characteristics of each component with the TVOC content, and realize the function of real-time monitoring of the TVOC emission of components during the heating process of the simulated cockpit, breaking through the technical barriers between the TVOC of components and the odor of components, effectively predicting and evaluating the TVOC emission of components during actual use of the vehicle, carrying out targeted development of components in advance, and effectively reducing the risk of odor emission of enterprises during the mass production stages of complete vehicles and components.

[0039] Furthermore, in this embodiment, it can also be considered that the cabin door is a movable cabin door or a quick-release cabin door.

[0040] Furthermore, in this embodiment, it can also be considered that the environmental detection component includes a temperature sensor for detecting the temperature in the cabin.

[0041] Furthermore, in this embodiment, it can also be considered that the detection equipment includes one or more of TVOC monitoring equipment, formaldehyde monitoring equipment, PM2.5 monitoring equipment, and PM10 monitoring equipment.

[0042] Furthermore, in this embodiment, it can also be considered that the inner and outer walls of the cockpit are made of smooth, lightweight, high temperature resistant (50° C.), and odorless materials.

[0043] Furthermore, in this embodiment, it can also be considered that a wheel drive mechanism for driving the wheels to move and a power interface for charging and using an external power supply are provided in the cockpit, the wheel drive mechanism includes a wheel drive assembly and a remote control drive assembly, both of which can control the wheel motor, the control circuit of the wheel drive assembly is the built-in electrical control circuit of the cockpit, the remote control drive assembly includes a remote control, and a control circuit part is added to the built-in electrical control circuit of the cockpit, a contactor and a relay are provided in the control circuit part, the coil of the relay is connected to the output end of the remote control, and the remote control is controlled according to the function of the output end to realize various actions of the relay, and the on and off of the relay contacts are used to control the coil of the contactor in the circuit, so that the main contacts of the contactor are closed, and finally the motor is operated, so that personnel can control it externally through the remote control.

[0044] Embodiment 2:

[0045] A simulated cockpit test system includes the simulated cockpit and detection equipment described in Example 2. The simulated cockpit and the detection equipment are connected, and the data association function is enabled to form a simulated cockpit test system.

[0046] In this embodiment, a simulated car cockpit with a sense of technology and texture is designed, and based on the experience of testing TVOC of parts, a TVOC monitoring device with a suitable range is selected, the simulated cockpit is connected to the TVOC monitoring device, and the data association function is opened to form a simulated cockpit test system. By fixing each component in the simulated cockpit in a simulated state of being loaded, TVOC detection and synchronous artificial odor identification are performed on the air quality in the cabin, the assembled odor characteristics of each component can be data-associated with the TVOC content, and the function of real-time monitoring of the TVOC emission of components during the heating process of the simulated cockpit is realized, breaking through the technical barriers between the TVOC of components and the odor of components, effectively predicting and evaluating the TVOC emission of components during the actual use of the vehicle, and carrying out targeted development of components in advance, effectively reducing the risk of odor emission in the mass production stage of the whole vehicle and components.

[0047] Embodiment 3:

[0048] A method for detecting odor of automobile parts based on a simulated cockpit test system, the specific operation steps are as follows:

[0049] 1. Design a simulated car cockpit with a sense of technology and texture. And realize the following functions and features:

[0050] ① The appearance of the simulated car cockpit should have a sense of technology and high-end texture, and be able to withstand an environment of 50°C.

[0051] ② It should have tires and can be moved and displayed according to the site conditions. It is best to have electric function so that personnel can control it from outside.

[0052] ③ Only one transparent movable door or quick-detachable door is left in the cockpit. After the door is closed, the situation inside the cabin can be clearly seen from the outside.

[0053] ④ The cockpit should be well sealed, and the interior should be completely sealed after the door is closed, with no air circulation from the outside. 4-5 sets of freely switchable pipes are reserved on the bulkhead to facilitate the connection of detection equipment and artificial odor identification.

[0054] ⑤The interior and exterior of the cockpit are made of smooth, lightweight, high temperature resistant (50°C), and odorless materials.

[0055] ⑥ Windows can be set at appropriate positions on the outside of the cockpit according to the style of the exterior design, which is close to the real car and increases the aesthetics.

[0056] ⑦ The size of the mobile cabin door should be large to facilitate the replacement and setting of internal cabin parts.

[0057] ⑧Install temperature sensors and frames (for hanging and fixing parts) at appropriate locations on the walls, ceiling and floor inside the cabin.

[0058] ⑨The cabin volume is about 3 cubic meters, which is similar in size to the cockpit (including trunk) of a mid-size SUV.

[0059] ⑩Good load-bearing capacity, can meet the needs of 3-4 operators to enter freely. There is a power interface, which can be charged and applied with an external power supply.

[0060] 2. Based on the experience of testing TVOC of parts, select TVOC monitoring equipment with appropriate range. If there is no suitable equipment, customize the monitoring equipment that at least meets the following performance requirements in the table below:

[0061] Table 1: Performance requirements for monitoring equipment

[0062]

[0063]

[0064] Note: The main monitoring indicator in the method of the present invention is TVOC, but formaldehyde, PM2.5, and PM10 are also secondary indicators for measuring the odor emission of parts and components, and play a certain role in the analysis of the odor type of parts and components.

[0065] 3. Connect the simulated cockpit with the TVOC monitoring equipment and open the data association function to form a simulated cockpit test system.

[0066] 4. Move the simulated cockpit to the vehicle VOC testing room. After sealing the simulated cockpit, use TVOC monitoring equipment to test the air quality inside the simulated cockpit. The TVOC is less than 10mg / m 3 The test can be carried out. Otherwise, use alcohol to wipe and clean the interior of the simulated cockpit. Repeat the operation until the TVOC content in the simulated cockpit is less than 10mg / m 3 .

[0067] 5. Remove all coverings from the parts to be tested, fix them inside the simulated cockpit in accordance with the actual loading position and direction, and ensure that they are consistent with the actual loading status. Close the hatch, seal the simulated cockpit, turn on the TVOC monitoring equipment, and monitor the TVOC emission inside the simulated cockpit in real time.

[0068] 6. Normal temperature test: After keeping the simulated cockpit at 25°C for 16 hours, five professionally trained odor evaluators will perform artificial odor odor detection on the air inside the simulated cockpit through the artificial odor detection ports reserved on the outer wall of the simulated cockpit. The average score of the five evaluators is the evaluation result Q1 of the odor intensity, odor pleasantness and other indicators of the component. At the same time, the test results of the TVOC monitoring equipment can be read to obtain the TVOC value TVOC1 of the component at normal temperature.

[0069] 7. High temperature test: After completing the normal temperature test, the simulated cockpit is kept sealed and the TVOC monitoring equipment is monitored in real time. After being kept at 45°C for 4 hours, 5 professionally trained odor evaluators respectively perform artificial odor odor identification on the air inside the simulated cockpit through the artificial odor odor identification port reserved on the outer wall of the simulated cockpit. The average score of the 5 evaluators is the evaluation result of the odor intensity, odor pleasantness and other indicators of the component q1. At the same time, the test results of the TVOC monitoring equipment can be read to obtain the TVOC value tvoc1 emitted by the component at room temperature.

[0070] 8. Repeat steps 1-7 above for all target parts that may affect the air quality in the vehicle, and obtain the room temperature odor evaluation result Qn, room temperature TVOC value TVOCn, high temperature odor evaluation result qn, and room temperature TVOC value tvocn of each part. Summarize all the data into a statistical table, and you can clearly see the odor evaluation results and TVOC emissions of each part at different temperatures. Parts with poor odor performance and high TVOC values ​​will be subject to further management analysis as key control parts.

[0071] 9. For the key control parts identified above, perform regular tests according to the above steps to observe the odor and TVOC emission curves of these parts. Once a batch of products has a significant fluctuation in odor or TVOC, it means that the factors of people, machines, materials, methods, and environment of the batch of parts have changed. At this time, the raw materials, production processes, packaging, handling, storage, etc. of each target part are monitored to find the factors affecting the product odor and TVOC emission, and promote improvements. After the improvement is completed, re-test the odor and TVOC of the part, and compare it with the change curve of daily monitoring to verify the improvement effect.

[0072] 10. For the identified key controlled parts, if it is necessary to further analyze which components or raw materials affect the odor and TVOC of the component assembly, the method of the present invention can be referred to, the component can be split into individual components and raw materials, and the odor evaluation and TVOC detection can be carried out according to the above steps 1-8 respectively, to find the key components or raw materials that affect the odor of the component assembly and the emission of TVOC, and then the components or raw materials can be improved and verified in the form of step 9. If further component analysis of TVOC is performed, it is necessary to collect benzene substances through the TENAX sampling tube and aldehydes and ketones through the DNPH sampling tube while performing odor evaluation on the air in the simulated cockpit, and collect air samples in the simulated cockpit. After the sample collection is completed, when the collected air sample is analyzed using GC-MS equipment in the analytical laboratory, it is necessary to identify and analyze all the peaks of the chromatographic column, and introduce the sample gas into the MS detector at the end of the chromatographic column, and finally obtain the full spectrum analysis results of the air sample.

[0073] Application Example 1:

[0074] The interior parts of a certain vehicle model were tested and analyzed according to the normal temperature testing steps in the flow chart of the above embodiment 3, and the following Table 2 was obtained.

[0075] Table 2: Statistics of odor and TVOC of complete vehicles and their components

[0076]

[0077] 1. The smell of the whole vehicle is mainly aromatic, and the TVOC is 32270mg / m 3 The total TVOC of each component is 34359 mg / m 3 , the TVOC detection error of parts and complete vehicles is 6.5%, which is much lower than the 15% error of the bag method or box method.

[0078] 2. Sort the data in the statistical table by odor performance and TVOC emission, screen out key control objects, and obtain the following Table 3.

[0079] Table 3: Statistics of key control objects

[0080]

[0081] 3. The 11 selected key controlled parts were tested regularly (once a month) according to the testing method in Example 3, and monitored continuously for 6 months to obtain the following statistical table 4.

[0082] Table 4: Statistics of 6-month continuous monitoring

[0083]

[0084] 4. By statistically analyzing the monitoring and testing results of 11 key control parts for 6 consecutive months, it was found that the odor and TVOC statistical results of the seat No. 10 and the ceiling No. 21 had a significant trend of change. Specifically, the odor of the seat No. 10 deteriorated significantly in June, and the TVOC increased significantly, which directly led to the deterioration of the odor of the whole vehicle in June. Immediately monitor and confirm the factors of the seat supplier, such as people, machines, materials, methods, and environment, of this batch of parts. It was found that the supplier replaced the raw material supplier of the seat skin in early June, and other factors did not change. Therefore, it can be concluded that the replacement of the raw material supplier of the seat skin is the factor affecting the product odor and TVOC emission. Continue to carry out special improvements on the odor and TVOC of the new seat skin raw materials. From July to August, a baking process was added before the skin raw materials were shipped out of the factory to promote the improvement of the odor of the raw materials. After the improvement was officially completed at the end of August, the odor and TVOC of the seat No. 10 continued to be monitored, and it was found that the seat odor and TVOC levels in September returned to the original level, and even slightly decreased. The entire investigation and improvement logic verifies the effectiveness of this patented method.

[0085] 5. Regarding the data of another ceiling No. 21 that was discovered, it is specifically shown that the TVOC of the ceiling No. 21 has continued to decrease since April. The TVOC emission in September was only 62% of that in April. Through on-site confirmation and communication with the supplier, it was found that the supplier had officially applied new factory ventilation facilities since May, upgrading the original fan ventilation to overall ventilation, and the ventilation rate of the production workshop could reach 1.5 times / hour. The direct impact of the improvement in ventilation efficiency is a significant reduction in the ambient air quality in the workshop. After inspection, the TVOC of the workshop environment in September was only 38% of that in April. The improvement in the air in the workshop environment has led to a significant reduction in the content of odor substances adsorbed in the environment by the ceiling components of the composite materials during production and storage, and has increased the odor emission rate of its own raw materials, effectively improving the product odor and TVOC. As can be seen from the statistical table, the data analysis and improvement logic of the ceiling products verify the effectiveness of this patented method.

[0086] 6. Through the analysis of the above cases, a method for detecting the odor of automobile parts based on the simulated cockpit system was established, which can effectively measure the contribution of different parts in the car to the odor and TVOC emission of the whole vehicle, breaking through the odor and TVOC technical barriers between the whole vehicle and parts, and based on the analysis of statistical results, it can accurately judge the influence of the change points of the man-machine-material-method-environment elements of each part on the odor and TVOC of the whole vehicle, as well as the improvement effect of each part, thus realizing the odor & TVOC management method in two dimensions of the whole vehicle and parts. According to this patent process, if the odor and TVOC of a single component assembly in the car need to be improved, this method can be used repeatedly for prediction, analysis and judgment.

[0087] The above embodiments describe the present invention in detail, but the contents are only preferred embodiments of the present invention and cannot be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A simulated cockpit, comprising: The vehicle body frame, chassis frame, cabin roof, bulkhead, cabin bottom and wheels are characterized in that: the cabin roof, bulkhead and / or cabin bottom of the cockpit are provided with environmental detection components and an assembly frame for assembling parts to be detected, one side of the cabin wall of the cockpit is provided with a transparent cabin door, and when the cabin door is closed, the cockpit as a whole is in a fully enclosed state, and a plurality of detection pipelines for connecting detection equipment and artificial odor detection and which can be opened and closed freely are reserved on the bulkhead.

2. A simulation cockpit according to claim 1, characterized in that: The door is a movable door or a quick-detachable door.

3. A simulation cockpit according to claim 1, characterized in that: The environment detection component includes a temperature sensor.

4. A simulation cockpit according to claim 1, characterized in that: The detection equipment includes one or more of TVOC monitoring equipment, formaldehyde monitoring equipment, PM2.5 monitoring equipment, and PM10 monitoring equipment.

5. The simulation cockpit according to claim 1, characterized in that: The interior and exterior of the cockpit walls are made of smooth, lightweight, high temperature resistant, and odorless materials.

6. The simulation cockpit according to claim 1, characterized in that: The cockpit is provided with a wheel drive mechanism for driving the wheels to move and a power interface for charging and using an external power supply. The wheel drive mechanism includes a wheel drive assembly and a remote control drive assembly. Both the wheel drive assembly and the remote control drive assembly can control the wheel motor.

7. A simulated cockpit test system, characterized in that: The method comprises a simulation cockpit and a detection device as described in any one of claims 1 to 6, wherein the simulation cockpit is connected to the detection device, and a data association function is enabled to form a simulation cockpit test system.

8. A method for detecting odor of automobile parts based on the simulated cockpit test system according to claim 7, characterized in that: The following steps are involved: S1. Connect the simulated cockpit with the TVOC monitoring equipment and open the data association function to form a simulated cockpit test system; S2. Move the simulated cockpit to the vehicle VOC testing room. After sealing the simulated cockpit, use TVOC monitoring equipment to test the air quality inside the simulated cockpit. The TVOC should be less than 10 mg / m 3 The test can be carried out. Otherwise, use alcohol to wipe and clean the interior of the simulated cockpit. Repeat the operation until the TVOC content in the simulated cockpit is less than 10 mg / m 3 ; S3. Remove all coverings from the parts to be tested, fix them inside the simulated cockpit with reference to the actual loading position and direction, and ensure that they are consistent with the actual loading status; S4. Close the cabin door, seal the simulated cockpit, turn on the TVOC monitoring equipment, and monitor the TVOC emission inside the simulated cockpit in real time; S5. Start normal temperature test and high temperature test; S6. Repeat the above steps S1-S5 for all target parts that may affect the air quality in the vehicle, and obtain the normal temperature odor evaluation result Qn, normal temperature TVOC value TVOCn, high temperature odor evaluation result qn, and normal temperature TVOC value tvocn of each part; S7. All data will be organized and summarized into statistical tables, which can clearly show the odor evaluation results and TVOC emissions of each component at different temperatures. Components with poor odor performance and high TVOC values ​​will be treated as key control components for further management analysis.

9. The automobile parts odor detection method of the simulated cockpit test system according to claim 8, characterized in that: The process also includes step S8, for the key controlled parts identified in step S7, regularly testing them according to the above steps S1-S7, observing the odor and TVOC emission curves of these parts, and once a batch of products has a significant fluctuation in odor or TVOC, monitoring the raw materials, production process, packaging, handling, storage and other processes of each target part to find out the factors affecting the product odor and TVOC emission, and promote improvement; After the improvement is completed, the component will be retested for odor and TVOC, and compared with the change curve of daily monitoring to verify the improvement effect.

10. The automobile parts odor detection method of the simulated cockpit test system according to claim 9, characterized in that: For the identified key controlled parts, if it is necessary to further analyze which components or raw materials affect the odor and TVOC of the parts assembly, the key controlled parts shall be split into individual components and raw materials, and odor evaluation and TVOC detection shall be carried out according to the above steps S1-7 to find the key components or raw materials that affect the odor and TVOC emission of the parts assembly, and then the components or raw materials shall be improved and verified in the form of step S8; if further component analysis of TVOC is to be performed, it is necessary to collect benzene substances through the TENAX sampling tube and aldehydes and ketones through the DNPH sampling tube while conducting odor evaluation on the air in the simulated cockpit, and collect air samples in the simulated cockpit; After the sample is collected, when the collected air sample is analyzed using GC-MS equipment in the analytical laboratory, all the peaks of the chromatographic column need to be identified and analyzed, and the sample gas is introduced into the MS detector at the end of the chromatographic column to finally obtain the full spectrum analysis results of the air sample.

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