Air quality management control system for automobile passenger compartment

Abstract

The invention discloses an automobile passenger compartment air quality management control system, and relates to the field of automobile air quality management.The automobile passenger compartment air quality management control system comprises an air conditioning system and a management and control system.The management and control system comprises a PM2.5 sensor, an AQS system, a negative ion generator and a UVC-LED device.The method specifically comprises the following steps that S1, the concentration of pollutants in an automobile is detected; s2, calculating the air quality indexes IAQI of a plurality of pollutants in the air according to the data collected by the sensor; and S3, a control strategy is designed based on the multiple pollutant air quality indexes IAQIs, so that on-off of the negative-ion generator and the UVC-LED device is controlled, and an air inlet control system of the air conditioning system is adjusted. According to the air conditioner control method, when the air conditioner controller detects that the air quality is poor through the PM2.5 sensor and the AQS sensor, the air inlet mode can be switched, and the negative ion generator and the UVC-LED device in the automobile are started; and the functions of purifying the current air in the vehicle and disinfecting and sterilizing the newly sucked air at the air inlet of the air conditioner can be simultaneously realized.

Description

Technical Field

[0001] The present invention relates to the field of automobile air quality management, and in particular to an automobile passenger compartment air quality management and control system. Background Art

[0002] Patent CN109278494A has been searched and disclosed a system and method for achieving real-time optimal breathing in the passenger compartment, including a PM2.5 sensor module, an AQS sensor, an air conditioning controller, and an internal / external circulation switching unit. The controller collects PM2.5 concentrations inside and outside the vehicle and the air quality inside the vehicle, automatically switching the air conditioning's internal / external circulation air intake mode to ensure that the passenger compartment is in the optimal and healthy breathing state in real time. However, this invention has a certain hysteresis. When the controller detects that the PM2.5 concentrations inside and outside the vehicle and the air quality inside the vehicle are poor, the processing method is relatively simple.

[0003] At the same time, the patent publication number CN113844232A was retrieved. Compared with the above-mentioned prior art, the prior art adds a temperature control air purification function, but the above two solutions do not involve the disinfection and sterilization of the air inside the car and the newly inhaled air at the air-conditioning inlet. The key to the solution is that when the air quality inside the car is poor, the air intake mode is switched to external circulation; otherwise, it is switched to internal circulation. However, when the air quality inside and outside the car is poor, the existing solution cannot optimize the current air quality. Based on this, the present invention designs an automobile passenger compartment air quality management and control system. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose an automobile passenger compartment air quality management and control system.

[0005] An automobile passenger compartment air quality management and control system automatically activates the vehicle's disinfection and sterilization equipment and adjusts the air intake mode of the air conditioning system's internal and external circulation dampers based on the air quality inside and outside the vehicle to ensure that the passenger compartment is in the optimal healthy breathing state in real time. The system specifically includes the following steps:

[0006] S1: Detects pollutant concentrations in the vehicle through multiple sensors, including:

[0007] The PM2.5 sensor module is used to sense changes in PM2.5 concentration inside and outside the vehicle;

[0008] The AQS sensor is used to detect changes in the concentration of oxidizing and reducing gases outside the vehicle;

[0009] S2: Calculate the air quality index (IAQI) of each pollutant in the air through data collected by multiple sensors;

[0010] S3: Design a control strategy based on multiple pollutant air quality indices (IAQIs) to control the switching of the negative ion generator and UVC-LEDs, and adjust the air intake control system of the air conditioning system.

[0011] In the above-mentioned automobile passenger compartment air quality management and control system, the air quality index calculation formula is as follows:

[0012]

[0013] Among them, where:

[0014] IAQIx – Control quality index of pollutant x;

[0015] Cx——the measured concentration value of pollutant x;

[0016] BXHi - the upper value of the pollutant concentration limit close to Cx;

[0017] BXLo - the lower value of the pollutant concentration limit close to Cx;

[0018] IAQIHi - air quality score corresponding to BXHi;

[0019] IAQILo - the air quality score corresponding to BXLo.

[0020] In the above-mentioned automobile passenger compartment air quality management and control system, the maximum value among the IAQIs of various pollutants is selected as the AQI and confirmed as the primary pollution, that is, AQI = IAQImax = {IAQI1, IAQI2, IAQI3...IAQIn}, and the corresponding pollution level is determined based on the concentration relationship. The control strategy is divided into four processing intervals according to the AQI pollution level.

[0021] In the above-mentioned automobile passenger compartment air quality management and control system, the number of the processing intervals is set to four, wherein the four processing intervals are divided by three different thresholds, respectively including:

[0022] The air quality is good, and the AQI is below the first threshold;

[0023] The air quality is slightly polluted, with the AQI higher than the first threshold and lower than the second threshold;

[0024] The air quality is moderately polluted, with the AQI higher than the second threshold and lower than the third threshold;

[0025] The air quality is severely polluted, and the AQI is higher than the third threshold.

[0026] In the above-mentioned automobile passenger compartment air quality management and control system, the control strategy includes: when the air quality is slightly polluted, the internal and external circulation dampers are adjusted to a ratio of 50% for external circulation;

[0027] When the air quality is moderately polluted, turn on the negative ion purification function and adjust the internal and external circulation dampers to external circulation;

[0028] When the air quality is seriously polluted, turn on the negative ion purification function and ultraviolet sterilization function;

[0029] When the air quality is better, turn off the negative ion purification function and ultraviolet sterilization function.

[0030] Compared with the existing technology, the advantages of the present invention are:

[0031] 1. Compared with the existing technology, when the air conditioning controller detects poor air quality through the PM2.5 sensor and the AQS sensor, the present invention can simultaneously turn on the in-vehicle air purification equipment (negative ion generator) and the UVC-LED device when switching the air intake mode; these two devices can simultaneously purify the current in-vehicle air and disinfect and sterilize the newly inhaled air at the air conditioning inlet.

[0032] 2. The present invention collects pollutant concentrations in the vehicle through an AQS system and PM2.5 sensors, then distinguishes primary pollution based on the values ​​of multiple pollutant concentrations, and designs a control strategy to achieve automatic air quality management functions, thereby maintaining improved air quality in the vehicle while reducing electricity costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the control strategy in the automobile passenger compartment air quality management and control system proposed by the present invention.

[0034] Figure 2 This is a structural schematic diagram of the air conditioning system and the control system in an automobile passenger compartment air quality management and control system proposed by the present invention. DETAILED DESCRIPTION

[0035] Reference Figures 1-2 A vehicle passenger compartment air quality management and control system includes an air conditioning system and a control system. The control system includes a PM2.5 sensor, an AQS system, a negative ion generator, and a UVC-LED device. Based on the air quality inside and outside the vehicle, the control system automatically adjusts the air intake mode of the air conditioning system's internal and external circulation dampers and the control system. The control system specifically includes the following steps:

[0036] S1: Detect the concentration of pollutants in the vehicle, including:

[0037] The PM2.5 sensor module is used to sense changes in PM2.5 concentration inside and outside the vehicle;

[0038] The AQS sensor is used to detect changes in the concentration of oxidizing and reducing gases outside the vehicle, including sulfur dioxide, nitrogen dioxide, carbon monoxide and ozone;

[0039] S2: Calculate the air quality index (IAQI) of multiple pollutants in the air using the data collected by the sensors;

[0040] S3: Design a control strategy based on multiple pollutant air quality indices (IAQIs) to control the switching of the negative ion generator and UVC-LED device, and adjust the air intake control system of the air conditioning system.

[0041] The air quality index calculation formula is as follows:

[0042]

[0043] Among them, where:

[0044] IAQIx – Control quality index of pollutant x;

[0045] Cx——the measured concentration value of pollutant x;

[0046] BXHi - the upper value of the pollutant concentration limit close to Cx in the above table;

[0047] BXLo - the lower value of the pollutant concentration limit close to Cx in the above table;

[0048] IAQIHi - the air quality score corresponding to BXHi in the table above;

[0049] IAQILo – The air quality score corresponding to BXLo in the table above.

[0050] The relationship between the concentration of each pollutant and the air quality index can be found in the following table:

[0051]

[0052] The primary pollution is determined by calculating the IAQI of each pollutant and selecting the maximum value as the AQI;

[0053] That is, AQI = IAQImax = {IAQI1, IAQI2, IAQI3, ... IAQIn}, and then divided into four processing intervals according to the air state. The four processing intervals are divided by three different thresholds, namely:

[0054] The first threshold AQI=100, wherein the AQI is lower than the first threshold for the first processing period, at this time the negative ion purification function and the ultraviolet sterilization function are turned off;

[0055] The second threshold AQI=150, when the AQI is higher than the first threshold and lower than the second threshold, is the second processing interval, at which time the internal and external circulation dampers in the air conditioning system are adjusted to a ratio of 50% for external circulation;

[0056] The third threshold AQI=200: When the AQI is higher than the second threshold and lower than the third threshold, it is the third processing interval, at which time the internal and external circulation dampers in the air conditioning system are adjusted to external circulation;

[0057] When the AQI is greater than the third threshold, it is the fourth processing interval, and the negative ion purification function and ultraviolet sterilization function are turned on.

[0058] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. An automobile passenger compartment air quality management and control system, characterized in that: The system includes an air conditioning system and a control system. The control system includes a PM2.5 sensor, an AQS system, a negative ion generator, and a UVC-LED device. Based on the air quality inside and outside the vehicle, the air conditioning system's internal and external circulation damper air intake mode and the control system are automatically adjusted. Specifically, the following steps are included: S1: Detect the pollutant concentration in the vehicle, including: The PM2.5 sensor module is used to sense the PM2.5 concentration changes inside and outside the vehicle; The AQS sensor is used to detect changes in the concentration of oxidizing and reducing gases outside the vehicle, including sulfur dioxide, nitrogen dioxide, carbon monoxide and ozone; S2: Calculate the air quality index IAQI of multiple pollutants in the air through the data collected by the sensor; S3: Design a control strategy based on multiple pollutant air quality indexes (IAQIs) to control the switches of the negative ion generator and UVC-LED device and adjust the air intake control system of the air conditioning system.

2. The vehicle passenger compartment air quality management and control system according to claim 1, characterized in that: The air quality index calculation formula is as follows: Among them, in the formula: IAQIx – control quality index of pollutant x; Cx——measured concentration value of pollutant x; BXHi——high value of pollutant concentration limit close to Cx; BXLo - the lower value of the pollutant concentration limit close to Cx; IAQIHi——the air quality score corresponding to BXHi; IAQILo – The air quality score corresponding to BXLo.

3. The vehicle passenger compartment air quality management and control system according to claim 1, characterized in that: The maximum value is selected from the IAQI of each pollutant to determine the AQI, and confirmed as the primary pollution, that is, AQI = IAQImax = {IAQI1, IAQI2, IAQI3...IAQIn}, and the corresponding pollution level is determined according to the concentration relationship. The control strategy is divided into multiple processing intervals according to the pollution level of AQI.

4. The vehicle passenger compartment air quality management and control system according to claim 1, characterized in that: The number of the processing intervals is set to four, wherein the four processing intervals are divided by three different thresholds, respectively including: The air quality is good, and the AQI is lower than the first threshold; The air quality is slightly polluted, with the AQI higher than the first threshold and lower than the second threshold; The air quality is moderately polluted, with the AQI being higher than the second threshold and lower than the third threshold; The air quality is severely polluted, and the AQI is higher than the third threshold.

5. The vehicle passenger compartment air quality management and control system according to claim 4, characterized in that: The control strategy includes: when the air quality is slightly polluted, the ratio of the inner excavation circulation damper to the outer circulation is adjusted to 50%; When the air quality is moderately polluted, turn on the negative ion purification function and adjust the internal and external circulation dampers to external circulation; When the air quality is seriously polluted, turn on the negative ion purification function and ultraviolet sterilization function; When the air quality is better, turn off the negative ion purification function and ultraviolet sterilization function.

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