Vehicle-mounted air quality automatic induction internal and external circulation control system and control method

Abstract

The invention discloses a vehicle-mounted air quality automatic induction internal and external circulation control system and a control method, and belongs to the field of intelligent control of automobile air conditioners. The system automatically judges and switches internal and external circulation of the air conditioner by monitoring the concentration of dust, waste gas and harmful gas outside the automobile in real time, the external circulation is closed when pollution exceeds the standard, and the external circulation is opened when air is fresh. The protection range of the system covers existing and future hardware equipment, the system cannot be avoided by replacing a novel controller, the plagiarism prevention capability is extremely high, and the system is suitable for new vehicle original factory standard configuration and old vehicle after-loading markets and has extremely high practicability and commercial value.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology for automotive air conditioning, specifically to a control system and control method that automatically switches between internal and external air circulation based on the quality of outside air. Background Technology

[0002] Currently, most car air conditioning systems on the market rely on manual switching between internal and external air circulation, which is cumbersome and poses safety hazards. Some high-end models only have a single odor-triggered internal circulation function, unable to accurately detect multiple pollutants such as dust, PM2.5, carbon monoxide, and nitrogen oxides, and lack the function of automatically resuming external circulation once air quality meets standards. Prolonged use of internal circulation can lead to oxygen deficiency and stuffiness inside the car, affecting the health and comfort of drivers and passengers. Existing technologies have a narrow scope of protection and are easily circumvented, failing to form an effective technological barrier. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a vehicle-mounted air quality automatic sensing internal and external circulation control system and method with a wide protection scope, difficult to circumvent, and extremely strong anti-copying capabilities. By monitoring the outside air quality in real time, it automatically shuts off the external circulation when polluted and automatically opens it when fresh, without any manual intervention. The system consists of an outside air monitoring unit, a logic control unit, a damper execution unit, and a notification unit. The monitoring unit collects data on multiple pollutants in real time; the control unit ensures stable operation through threshold judgment, anti-shake logic, and adaptive adjustment; the execution unit directly controls the air conditioning damper to complete the switching; and the notification unit provides synchronous status feedback. The core protection of this invention is its logic control function, not a specific hardware model. Regardless of any new control chips or computing units that exist or will emerge in the future, as long as they achieve the same judgment and control functions, they fall within the scope of protection. Beneficial effects

[0004] 1. Fully automatic bidirectional switching, requiring no manual operation, enhancing driving safety and comfort. 2. Multi-dimensional pollution detection, providing comprehensive protection against exhaust fumes, dust, and harmful gases. 3. Anti-shake, hysteresis, and adaptive logic ensure more stable operation and less frequent switching. 4. Protection covers existing and future hardware, impossible to circumvent by replacing with newer chips. 5. Compatible with both original equipment manufacturer (OEM) and aftermarket installations, offering wide market application. 6. Extremely strong anti-copyright protection, simple rights protection, and a high success rate in litigation. Attached Figure Description

[0005] Figure 1 This is a system structure block diagram of the present invention. Detailed Implementation

[0006] Example 1 The external air quality monitoring unit is installed at the front air intake of the vehicle to collect PM2.5 and CO data; the logic control unit uses the original vehicle air conditioning controller; when PM2.5 > 75 μg / m³ or CO > 10 ppm, the external air circulation is automatically shut off; after the air quality recovers, the external air circulation is automatically turned on. The system has anti-shake logic, preventing repeated switching within 5 seconds to ensure stable operation.

[0007] Example 2 It uses an independent microcontroller and an all-in-one sensor, directly connecting to the original vehicle's internal and external circulation motors for plug-and-play operation. Users can adjust the sensitivity to adapt to different driving environments. It can be installed on both new and old vehicle models without damaging the original wiring.

[0008] Example 3 The system continuously collects outside air quality data → compares it with a threshold → if the quality exceeds the threshold, it shuts off the external air circulation → if the quality meets the threshold, it restarts the external air circulation → the cycle continues. This method protects the core logic but does not restrict the hardware implementation; any manufacturer that imitates this logic constitutes infringement.

[0009] Example 4 The system adds temperature and humidity monitoring functions to the original air quality monitoring, but the core logic is still to automatically switch between internal and external air circulation based on the air quality outside the vehicle. This solution still falls within the protection scope of this invention.

[0010] Example 5 Even if a new type of control chip or intelligent computing module is used as the logic control unit, its function is still to receive air quality data, determine thresholds and output switching commands, and it still falls within the scope of protection of this patent.

Claims

1. An automatic control device for the internal and external circulation of a vehicle air conditioner, characterized in that, include: The vehicle exterior air monitoring unit, logic control unit, and damper actuator unit are included; the vehicle exterior air monitoring unit is used to collect real-time data on the concentration of dust, exhaust gas, and polluting gases in the outside air. The logic control unit compares the collected data with the preset safety threshold and outputs a control signal based on the judgment result; the damper actuator automatically performs the switching action between internal and external circulation according to the control signal; when the pollution concentration exceeds the standard, it automatically closes the external circulation and maintains the internal circulation; when the pollution concentration drops to a safe range, it automatically opens the external circulation, realizing bidirectional automatic control without human intervention.

2. The apparatus according to claim 1, characterized in that, The vehicle exterior air monitoring unit includes at least one or more combinations of PM2.5 sensors, dust sensors, CO sensors, NO2 sensors, and VOC harmful gas sensors.

3. The apparatus according to claim 1, characterized in that, The logic control unit can be any one of a microcontroller, an ARM processor, an in-vehicle air conditioning controller, a vehicle ECU, or an in-vehicle central control system.

4. The apparatus according to claim 3, characterized in that: The logic control unit includes all existing and future processing devices, control chips and computing modules with data receiving, logic judgment and instruction output functions, regardless of the technical principle or name used, all of which fall within the scope of protection of this patent.

5. The apparatus according to claim 1, characterized in that, The logic control unit incorporates adjustable threshold, adaptive learning threshold, delay debouncing logic, and hysteresis control logic to avoid frequent system switching.

6. The apparatus according to claim 1, characterized in that, It also includes a prompting unit, which provides feedback on the current cycle mode through at least one of the following methods: instrument display, light prompt, sound prompt, and mobile APP reminder.

7. The apparatus according to claim 1, characterized in that, The device can be directly integrated into the original vehicle air conditioning system, or used as an independent aftermarket module, and is compatible with all fuel vehicles, new energy vehicles, commercial vehicles and passenger vehicles.

8. A method for automatic control of internal and external circulation of vehicle air conditioning, characterized in that, The method includes the following steps: real-time acquisition of outside air quality data; comparison of the acquired data with preset safety thresholds; when the data exceeds the standard, control to shut off the external air circulation and activate the internal air circulation; when the data meets the standard, control to open the external air circulation; continuously execute the above steps to achieve dynamic automatic control; regardless of the type of sensor, controller, or hardware structure used, as long as the core control logic of "automatically shutting off the external air circulation when the outside air is polluted and automatically opening the external air circulation when the outside air is fresh" is implemented, it falls within the protection scope of this method.

9. The apparatus according to claim 1, characterized in that: Regardless of whether the system adds a temperature sensor, humidity sensor, light sensor, rain sensor, or any other environmental monitoring unit, as long as the core logic remains to automatically switch the air conditioning between internal and external circulation based on the outside air quality, it falls within the scope of this patent protection and constitutes equivalent infringement.

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