An active indoor VOC release testing system

Abstract

This invention discloses an active indoor VOC release testing system, belonging to the field of VOC detection technology. The system includes: a testing module composed of several gas detection sensors for collecting the concentrations of various related volatile gases indoors; an analysis and processing module for comprehensively analyzing the collected concentrations of various related volatile gases to determine the indoor VOC concentration and generating corresponding control commands based on the VOC concentration; and an air purification module composed of multiple air purifiers. This invention can not only accurately determine the VOC concentration in each testing area, but also adjust the power of the air purifiers accordingly based on the VOC concentration. When the VOC concentration is low, the power of the air purifier can be reduced to save resources; when the VOC concentration is high, the power of the air purifier can be increased to treat the air and ensure the health of people.

Description

Technical Field

[0001] This invention belongs to the field of VOC detection technology, specifically relating to an indoor VOC release active testing system. Background Technology

[0002] VOCs refer to organic compounds that are easily volatile at room temperature and can evaporate under normal temperature and pressure. Generally speaking, outdoor VOCs mainly come from fuel combustion and transportation, while indoor VOCs mainly come from combustion products of coal and natural gas, smoke from smoking, heating and cooking, building and decoration materials, furniture, household appliances, cleaning agents, and emissions from the human body itself.

[0003] With the continuous development of the home decoration market, various problems have emerged, especially indoor environmental pollution. For example, furniture stores contain a large number of building materials, paints, and furniture, all of which release organic compounds. If these compounds exceed the standards, they can affect the health of people in the furniture stores.

[0004] Current VOC testing in furniture stores typically involves periodically placing VOC detectors within the store to monitor the VOC emissions. If the levels exceed predetermined limits, the VOC content is considered substandard. While this method can determine VOC compliance, the high turnover of customers and the interconnected airflow within furniture stores introduce randomness, leading to inaccurate results. Furthermore, while VOC compliance is determined by specific standards—exceeding a set threshold—constantly maintaining levels close to the threshold, even if initially considered compliant, exposes individuals to these concentrations, which is detrimental to their health. Summary of the Invention

[0005] The purpose of this invention is to provide an indoor VOC release active testing system to solve the problems encountered in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] An indoor VOC release active testing system, the system comprising:

[0008] The testing module consists of several gas detection sensors used to collect the concentrations of various relevant volatile gases in the room;

[0009] The analysis and processing module is used to comprehensively analyze the concentrations of various related volatile gases collected, thereby obtaining the indoor VOC concentration status, and generating corresponding control commands based on the VOC concentration status.

[0010] An air purification module, which consists of multiple air purifiers, adjusts the power of each air purifier according to control commands.

[0011] Furthermore, the method by which the analysis and processing module obtains the VOC concentration is as follows:

[0012] The indoor area is divided into m test zones based on the area. Each test zone is equipped with various gas detection sensors and corresponding air purifiers, and each air purifier is operating at the initially set power.

[0013] The gas concentration detected by each gas detection sensor is obtained using the formula. Obtain the VOC concentration in the j-th test area, and thus obtain the VOC concentration change curve Q of the j-th test area over the test time Δt. j (t);

[0014] Among them, X i To determine the concentration of the i-th gas being detected, β i Let be the proportionality coefficient of the concentration of the i-th gas, n be the type of gas being detected, and i∈(1,n), j∈(1,m), where n and m are positive integers.

[0015] Furthermore, the method for generating the control commands is as follows:

[0016] Through formula Calculate the VOC concentration value F in a single test area within the test time Δt. j ;

[0017] The obtained VOC concentration status value F j Compared with the system's preset VOC concentration threshold range [F x F y Compare;

[0018] When F j ∈(0,F x When ), the first instruction is generated;

[0019] When F j ∈[F x F y When [the command is executed], a second instruction is generated;

[0020] When F j ∈(F y When (+∞), a third instruction is generated;

[0021] Where Δt = t2 - t1, α1 and α2 are weighting coefficients, and max{Q j , where Δt} is the maximum value of VOC concentration within the time interval Δt.

[0022] Furthermore, the first instruction is a decrease instruction, the second instruction is a hold instruction, and the third instruction is an increase instruction.

[0023] Furthermore, the method for adjusting the power of the air purification module is as follows:

[0024] When a reduction instruction is generated, this is done using the formula. The power of the air purifier in the test area was adjusted to P. d ;

[0025] When generating an improvement instruction, this is done through the formula. The power of the air purifier in the test area was adjusted to P. u ;

[0026] When a hold command is generated, the power of the air purifier in the test area is maintained;

[0027] Among them, P TH The initial power setting for the air purifier, Pv max The maximum allowable adjustment power is preset by the system, S is the area of ​​the test region, and V is the maximum power that can be adjusted. j This represents the projected area of ​​the home furnishings contained in each test area.

[0028] Furthermore, the projected area of ​​the home furnishings contained in each test area is calculated using the formula... get;

[0029] in, This refers to the total projected area of ​​home furnishings within the test area at the start of the test. This represents the projected area of ​​home improvement products sold within the test area during the testing period. This refers to the projected area of ​​home furnishing products delivered within the test area during the testing period.

[0030] Furthermore, the system also includes an early warning module, which operates after generating a third instruction to provide early warning of potential indoor risks. The method by which the early warning module makes an early warning judgment is as follows:

[0031] After the third instruction is generated, the VOC concentration change curve Q(t) of the test area over time is obtained;

[0032] Through formula Calculate the risk coefficient K;

[0033] When K≥1, an early warning signal is generated;

[0034] Otherwise, no warning signal will be generated;

[0035] Where C(t) is the system-preset VOC risk threshold concentration change curve over time, T2 is the end time of detection, T1 is the start time of detection, and K... th The risk threshold coefficient preset for the system.

[0036] The beneficial effects of this invention are:

[0037] This invention divides an indoor space into multiple testing zones, each equipped with a corresponding gas detection sensor. This allows for continuous monitoring of the indoor gases, followed by analysis and processing to obtain the VOC concentration. This enables more accurate VOC concentration measurements and improves detection precision. Furthermore, based on the obtained VOC concentration data, corresponding control commands are generated to adjust the power of the air purification module, thereby regulating the indoor air quality and ensuring the health of indoor workers.

[0038] This invention can not only accurately determine the VOC concentration in each test area, but also adjust the power of the air purifier accordingly based on the VOC concentration. When the VOC concentration is low, the power of the air purifier can be reduced to save resources, while when the VOC concentration is high, the power of the air purifier can be increased to treat the air and ensure the physical and mental health of people.

[0039] This invention can be based on the formula By calculating the risk coefficient K and using it to assess and warn of potential indoor risks, unseen potential risks can be identified in a timely manner, ensuring the health of staff.

[0040] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a system block diagram of the present invention. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In one embodiment, an indoor VOC release active testing system is disclosed, such as Figure 1 As shown, the testing system mainly includes:

[0045] The testing module consists of several gas detection sensors used to collect the concentrations of various relevant volatile gases indoors;

[0046] The analysis and processing module is used to comprehensively analyze the concentrations of various related volatile gases collected, thereby obtaining the indoor VOC concentration status, and generating corresponding control commands based on the VOC concentration status.

[0047] The air purification module consists of multiple air purifiers, and the air purification module adjusts the power of the corresponding air purifiers according to control commands.

[0048] Through the above technical solution, this application divides the indoor space into multiple test areas, and installs corresponding gas detection sensors in each area to continuously detect the corresponding gases in the room. The VOC concentration is then obtained through an analysis and processing module, which can more accurately obtain the indoor VOC concentration and make the detection more accurate. At the same time, based on the obtained VOC concentration, corresponding control commands are generated to adjust the power of the air purification module, thereby adjusting the indoor air conditions according to the VOC concentration to ensure the physical and mental health of the staff in the room.

[0049] As one embodiment of the present invention, the method for the analysis and processing module to obtain VOC concentration is as follows:

[0050] The indoor area is divided into m test zones based on the area. Each test zone is equipped with various gas detection sensors and corresponding air purifiers, and each air purifier is operating at the initially set power.

[0051] The gas concentration detected by each gas detection sensor is obtained using the formula. Obtain the VOC concentration in the j-th test area, and thus obtain the VOC concentration change curve Q of the j-th test area over the test time Δt. j (t);

[0052] Among them, X i To determine the concentration of the i-th gas being detected, β i Let be the proportionality coefficient of the concentration of the i-th gas, n be the type of gas being detected, and i∈(1,n), j∈(1,m), where n and m are positive integers.

[0053] The above technical solution addresses the potential errors in VOC testing due to the circulating indoor air. Therefore, the indoor space is divided into m test zones based on area. VOC concentration is then measured within each zone, reducing the error range and increasing accuracy. Specifically, the gas concentration detected by each gas detection sensor is first obtained, and then... (The sentence is incomplete and requires further context). Obtain the VOC concentration in the j-th test area, and the proportionality coefficient β of the i-th gas concentration. i Based on historical data from relevant scenarios in big data analysis, the formula can be formulated. Since the main components and contents of VOCs in different fields are different, each relevant gas is collected separately, and then the formula is used. The VOC concentration is calculated, which allows for accurate and comprehensive identification of different types of VOC gases, rather than just a broad VOC index. This helps to understand the types and concentrations of VOCs more precisely, and the concentration levels can provide a basis for developing targeted control and emission reduction measures.

[0054] As one embodiment of the present invention, the method for generating control instructions is as follows:

[0055] Through formula Calculate the VOC concentration value F in a single test area within the test time Δt. j ;

[0056] The obtained VOC concentration status value F j Compared with the system's preset VOC concentration threshold range [F x F y Compare;

[0057] When F j ∈(0,F x When ), the first instruction is generated;

[0058] When F j ∈[F x F y When [the command is executed], a second instruction is generated;

[0059] When F j ∈(F y When (+∞), a third instruction is generated;

[0060] Where Δt = t2 - t1, α1 and α2 are weighting coefficients, and max{Q j Δt} represents the maximum VOC concentration within the time interval Δt;

[0061] The first instruction is to decrease, the second instruction is to maintain, and the third instruction is to increase.

[0062] Through the above technical solution, this embodiment provides a specific method for the analysis and processing module to generate corresponding control commands based on the VOC concentration. Since the indoor space is divided into multiple test areas, and gas testing is performed in each test area, each test area is equipped with a corresponding air purifier to purify the air within that area. First, a test time Δt is manually determined, and the VOC concentration change curve Q of the j-th test area within the test time Δt is obtained. j (t), first through the formula Calculate the average VOC concentration during the test period, and then use the formula max{Q j Δt} is used to obtain the maximum VOC concentration within time Δt in the test area, and finally the formula is used to obtain the maximum VOC concentration within time Δt. Calculate the VOC concentration value F for each test area. j By combining the average and maximum VOC concentrations within the test area, a comprehensive analysis can be performed to determine the VOC concentration status of that test area. This approach can accurately assess the VOC status of each test area. The obtained VOC concentration value F is then used to determine the overall VOC status. j Compared with the system's preset VOC concentration threshold range [F x F y The air quality in the test area is judged by comparison. When F j ∈(0,F x When F..., it indicates that the VOC concentration in the test area is very low and the air quality is good. This means that the current power of the air purifier can effectively process the air in the test area. To avoid wasting power, the power of the air purifier can be reduced. At this time, the first instruction is generated to reduce the power of the air purifier; and when F... j ∈[F x F y When the value is [value], it indicates that the VOC concentration in the test area is generally low, and maintaining the current power of the air purifier is sufficient to treat the air in the test area. Therefore, a second instruction is generated to maintain the current power of the air purifier; while F j ∈(F yWhen the value is +∞, it indicates a high VOC concentration in the test area. To ensure the health of personnel working inside, the air purifier's power needs to be increased. Therefore, a third command is generated to increase the air purifier's power. This control method not only allows for precise judgment of VOC concentration in each test area but also enables corresponding adjustments to the air purifier's power based on the VOC concentration. When the VOC concentration is low, the air purifier's power can be reduced to conserve resources; when the VOC concentration is high, the air purifier's power can be increased to treat the air and ensure the health of personnel.

[0063] In the above technical solution, the weighting coefficients α1 and α2 can be determined based on historical experience data, and the system's preset VOC concentration threshold range [F x F y This can be determined by analyzing relevant data in big data, and will not be elaborated further here.

[0064] As one embodiment of the present invention, the method for adjusting the power of the air purification module is as follows:

[0065] When a reduction instruction is generated, this is done using the formula. The power of the air purifier in the test area was adjusted to P. d ;

[0066] When generating an improvement instruction, this is done through the formula. The power of the air purifier in the test area was adjusted to P. u ;

[0067] When a hold command is generated, the power of the air purifier in the test area is maintained;

[0068] Among them, P TH The initial power setting for the air purifier, Pv max The maximum allowable adjustment power is preset by the system, S is the area of ​​the test region, and V is the maximum power that can be adjusted. j This represents the projected area of ​​the home furnishings contained within each test area.

[0069] The projected area of ​​the home furnishings contained in each test area is calculated using the formula. get;

[0070] in, This refers to the total projected area of ​​home furnishings within the test area at the start of the test. This represents the projected area of ​​home improvement products sold within the test area during the testing period. This refers to the projected area of ​​home furnishing products delivered within the test area during the testing period.

[0071] Through the above technical solution, this embodiment provides a specific method for adjusting the power of an air purifier. When a power reduction command is generated, the power is adjusted using the formula... The power of the air purifier in the test area was adjusted to P. d As can be seen from the formula, the lower the measured VOC concentration, that is, the lower the F... j The smaller the value, the better the air quality, and the greater the power reduction. Conversely, the smaller the projected area of ​​home furnishings in the test area, the less VOCs they emit, thus requiring a greater power reduction. Therefore, the formula... The power of the air purifier in the test area was adjusted to P. d Similarly, when generating an improvement instruction, the formula is used at this time. The power of the air purifier in the test area was adjusted to P. u As can be seen from the formula, the higher the measured VOC concentration, that is, the higher the F... j The larger the value, the worse the air quality, and the greater the corresponding increase in power. Conversely, the smaller the projected area of ​​home furnishings in the test area, the less VOCs they emit, thus requiring a greater reduction in power. And the larger the projected area of ​​home furnishings in the test area, the more VOCs they emit, thus requiring a greater increase in system power. Therefore, the formula... The power of the air purifier in the test area was adjusted to P. u Because of the high turnover of home furnishing products within furniture stores, the projected area of ​​these products varies at different times. Therefore, a formula can be used to calculate this area. Obtain the projected area of ​​home furnishings in each test area. Subtract the projected area of ​​home furnishings sold within the test area during the test period from the total projected area of ​​home furnishings in the test area at the start of the test. Then add the projected area of ​​home furnishings purchased within the test area during the test period to represent the projected area of ​​home furnishings during the test period. This method can make the adjustment results more accurate. Through this operation, the power of air purifiers in the test area can be precisely adjusted based on VOC concentration and the projected area of ​​home furnishings, so that resources can be used more rationally.

[0072] In the above technical solution, the system presets the maximum allowable adjustment power Pv max It can be formulated based on historical data and experience. as well as This information can be obtained from the supply list when purchasing home improvement products.

[0073] In one embodiment of the present invention, the system further includes an early warning module. After generating a third instruction, the early warning module performs operations to provide early warning of potential indoor risks. The method by which the early warning module makes an early warning judgment is as follows:

[0074] After the third instruction is generated, the VOC concentration change curve Q(t) of the test area over time is obtained;

[0075] Through formula Calculate the risk coefficient K;

[0076] When K≥1, an early warning signal is generated;

[0077] Otherwise, no warning signal will be generated;

[0078] Where C(t) is the system-preset VOC risk threshold concentration change curve over time, T2 is the end time of detection, T1 is the start time of detection, and K... th The risk threshold coefficient preset for the system.

[0079] Through the above technical solution, this implementation provides a specific method for the early warning module to warn of potential indoor risks. Since the VOC concentration in the surface test area is high after the third instruction is generated, the corresponding air purifier is activated for treatment. Simultaneously, the VOC concentration change curve Q(t) of the test area over time after the third instruction is generated is statistically analyzed, and the result is expressed using the formula... Calculate the risk coefficient K using the formula. The difference between the measured actual VOC concentration and the system's preset VOC risk threshold concentration is calculated. Since there may be some detection error, the measured difference is compared with the system's preset risk threshold coefficient K. th By comparing the results, when K ≥ 1, it indicates that the VOC concentration at that location remains high even after using an air purifier. To ensure monitoring, an early warning message is generated to remind personnel to seek more professional air purification services. Otherwise, if the VOC concentration has decreased after using the air purifier, no warning signal is generated. This method allows for the assessment and early warning of potential indoor risks based on VOC concentration levels, enabling timely detection of unseen potential hazards and protecting the health of staff.

[0080] In the above technical solution, the VOC risk threshold concentration change curve and the risk threshold coefficient preset by the system can be obtained from historical data, and the start and end time points of the detection can be determined in advance according to the indoor scale, which will not be described in detail here.

[0081] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. An indoor VOC emission pro-active testing system, characterized in that, The system comprises: a test module composed of a plurality of gas detection sensors for collecting the concentrations of various relevant volatile gases in the room; an analysis processing module for comprehensively analyzing the collected concentrations of various relevant volatile gases to obtain the concentration condition of VOC in the room and generating corresponding control instructions according to the concentration condition of VOC; an air purification module composed of a plurality of air purifiers, which adjusts the power of corresponding air purifiers according to the control instructions; The method for the analysis processing module to obtain the VOC concentration is to divide the room into m test areas according to the area, each test area is equipped with various gas detection sensors and corresponding air purifiers, and each air purifier is operated at an initially set power; Obtaining the gas concentration detected by each gas detection sensor, through the formula Obtaining the VOC concentration of the jth test area, thereby obtaining the test time Obtaining the VOC concentration of the jth test area, thereby obtaining the test time ; wherein, is the concentration of the ith gas to be detected, is a proportional coefficient of the concentration of the ith gas, n is the number of the gases to be detected, and i∈ , j∈ , n, m are positive integers; The method for generating the control instruction is: obtaining the test time through the formula ;​​ The obtained VOC concentration condition value compared with the system preset VOC concentration threshold interval comparison; When ∈ a first instruction is generated; When ∈ a second instruction is generated; When ∈ a third instruction is generated; wherein , and is a weight coefficient, is the maximum value of the VOC concentration within the time period. The first instruction is a reduction instruction, the second instruction is a maintenance instruction, and the third instruction is an improvement instruction; The method for the air purification module to adjust power is: when a lowering instruction is generated, at this time the power of the air purifier in the test area is adjusted to . ; When the boost instruction is generated, the power of the air purifier in the test area is adjusted to at this time by the formula ; When the maintenance instruction is generated, the power of the air purifier in the test area is maintained; wherein, an initial power set for the air purifier, an allowed maximum adjustment power preset for the system, S is the size of the area of the test region, a projected area of the home furnishing product contained in each test region.

2. An indoor VOC emission active testing system according to claim 1, characterized in that, The projected area of the home furnishing item contained within each test area is obtained by the formula A = (L x W) / 2 wherein is the total projected area of home furnishings contained within the test area at the start of the test, is the projected area of home furnishings sold within the test area during the test period, is the projected area of home furnishings stocked within the test area during the test period.

3. An indoor VOC emission active testing system according to claim 2, wherein, The system further comprises a warning module, which is operated after the third instruction is generated to warn of potential risks in the room, and the method for the warning module to make a warning judgment is: After the third instruction is generated, a curve of VOC concentration of the test area over time is acquired ; The risk coefficient is calculated by the formula ;​ When ≥ 1, then a warning signal is generated; Otherwise, no warning signal is generated. wherein, a VOC risk threshold concentration over time curve preset for the system, a time node at which the detection ends, a time node at which the detection starts, a risk threshold coefficient preset for the system.

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