In-vehicle harmful gas detection control system

Abstract

The utility model relates to the technical field of gas detection, in particular to an in-vehicle harmful gas detection control system. Comprising a sensor module used for detecting the concentration of hazardous gas in a vehicle and outputting a gas detection signal, an infrared sensor used for detecting an infrared signal sent by a human body, and a microprocessor module electrically connected with the sensor module and the infrared sensor and used for receiving the gas detection signal and the infrared signal. The gas detection signal and the infrared signal are analyzed and processed, and alarm data are output; the main controller module is electrically connected with the microprocessor module, the car window controller and the air conditioner controller and used for receiving the alarm data and outputting control signals to a car window and an air conditioner, and the communication module is connected with the main controller module and used for converting the control signals into a standard communication protocol. Gas in the vehicle is detected, and the vehicle window and the air conditioner switch are controlled for ventilation, so that the air quality in the vehicle is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of building gas detection, in particular to a harmful gas detection and control system in a vehicle. Background Art

[0002] In today's society, cars are an essential means of transportation, and people spend an increasing amount of time in them. Some people often sleep in their cars with the air conditioning on for a short rest, while drivers and passengers often spend extended periods of time in vehicles for various reasons. Undoubtedly, the air quality inside a vehicle has a crucial impact on the health of those inside.

[0003] While driving, a variety of factors can contribute to a decline in in-car air quality. The engine also produces nitrogen oxides, which accumulate in the relatively enclosed interior of the vehicle, gradually deteriorating the air quality. The most significant hazards to passenger safety include nitric oxide, carbon monoxide, and formaldehyde. These harmful gases primarily originate from fuel combustion, which continuously releases into the vehicle's interior as the vehicle moves. Other sources include emissions from interior accessories, which easily accumulate and are difficult to disperse. Furthermore, there are toxic and harmful gases from smoking.

[0004] Especially in the hot summer, the intense sun can cause the temperature inside a vehicle to rise dramatically. High temperatures further accelerate the release of harmful substances, causing the concentration of harmful gases inside the vehicle to rise rapidly. Long-term accumulation of harmful substances can cause various respiratory diseases and neurological problems.

[0005] Therefore, it is necessary to develop a gas detection system that can effectively detect harmful gases at different locations within the vehicle and intelligently control equipment such as the air conditioner and windows. Such a system can not only monitor the air quality inside the vehicle in real time, providing accurate environmental information to the occupants, but also automatically control the air conditioner and windows based on the detection results, and issue reminders, thereby ensuring the health and safety of the occupants. Utility Model Content

[0006] In order to solve the problem of in-vehicle gas detection and control, the utility model provides an in-vehicle harmful gas detection and control system.

[0007] In a first aspect, the present invention provides a vehicle-mounted harmful gas detection and control system, comprising a cloud platform and an on-board terminal connected to the cloud platform via wireless communication, wherein the on-board terminal comprises:

[0008] A sensor module is installed inside the vehicle to detect the concentration of dangerous gases inside the vehicle and output a gas detection signal;

[0009] Infrared sensor, installed on the front windshield of the vehicle, is used to detect infrared signals emitted by the human body;

[0010] The microprocessor module is electrically connected to the sensor module and the infrared sensor, and is used to receive the gas detection signal and the infrared signal, analyze and process the gas detection signal and the infrared signal, and output alarm data;

[0011] The main controller module is connected to the microprocessor module, the window controller, and the air conditioning controller, and is used to receive alarm data and output control signals to the windows and air conditioning;

[0012] The communication module is connected to the main controller module and is used to convert the control signal into a standard communication protocol.

[0013] Furthermore, the cloud platform is wirelessly connected to a mobile terminal.

[0014] Furthermore, the main controller module includes a delay module, which is connected to the sunroof controller and the air-conditioning controller. The delay module is connected to the cloud platform and is used to receive a delayed start signal from the mobile terminal and send a delayed start signal to the sunroof controller and the air-conditioning controller.

[0015] Furthermore, the sensor module includes a nitrogen monoxide sensor, a PM detection sensor, a methane sensor, a carbon monoxide sensor, a carbon dioxide detection sensor, a hydrocarbon detection sensor, a nitrogen oxide detection sensor, and an oxygen content detection sensor.

[0016] Furthermore, the main controller module is electrically connected to the display screen.

[0017] Furthermore, the microprocessor module includes an analog-to-digital converter and a timing module.

[0018] Furthermore, the communication module is equipped with an RS485 communication interface, and outputs the control signal through the RS485 communication interface.

[0019] Furthermore, the main controller module is electrically connected to an indicator light.

[0020] Furthermore, the main controller module is electrically connected to a digital-to-analog converter, the digital-to-analog converter is connected to a power amplifier, and the power amplifier is connected to a speaker.

[0021] Furthermore, the main controller module and the microprocessor module are both connected to a power supply, and the power supply is a UPS power supply.

[0022] In summary, the present invention has the following beneficial technical effects:

[0023] 1. This utility model proposes a vehicle-mounted harmful gas detection and control system with comprehensive detection and intelligent control capabilities. By configuring a sensor module composed of multiple sensors, it can comprehensively detect the concentrations of various dangerous gases in the vehicle, including nitric oxide, PM values, methane, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, oxygen content, and so on, providing accurate air quality information to vehicle occupants.

[0024] 2. The microprocessor module receives signals from the sensor module and infrared sensor, analyzes and processes them, and outputs alarm data. The main controller module automatically controls the windows and air conditioning according to the alarm data, realizing intelligent adjustment of the air quality in the car and ensuring the health and safety of the people in the car.

[0025] 3. The infrared sensor detects infrared signals emitted by the human body, and the processor uses this signal to accurately determine whether the vehicle is occupied. If so, an indicator light illuminates, a voice notification alerts the driver that the gas concentration is exceeding the permitted limit, and the windows are lowered or the air conditioner is turned on for ventilation. If no one is present, a signal is sent to a mobile device to alert the driver of excessive gas concentrations. The driver can control the delay module to issue a signal in advance, opening the sunroof and air conditioning for ventilation. This ensures good air quality upon entering the cabin, improving the user experience.

[0026] 4. The communication module converts alarm data into a standard communication protocol and wirelessly connects to the cloud platform, enabling remote data transmission and management. The cloud platform is also wirelessly connected to a mobile terminal, allowing users to monitor in-vehicle air quality at any time and achieve remote monitoring. The in-vehicle display provides intuitive information on current in-vehicle air quality parameters and system operating status, and is equipped with indicator lights and a speaker for reminders. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a working principle diagram of a harmful gas detection and control system in a vehicle according to an embodiment of the present utility model.

[0028] Figure 2 This is a structural block diagram of a harmful gas detection and control system in a vehicle according to an embodiment of the present utility model.

[0029] Figure 3 It is a block diagram of a microprocessor module according to an embodiment of the present invention.

[0030] Figure 4 It is a block diagram of the main controller module of an embodiment of the present utility model. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings.

[0032] Example 1

[0033] Reference Figure 2 In this embodiment, a vehicle-mounted harmful gas detection and control system includes a cloud platform and a vehicle-mounted terminal connected to the cloud platform via wireless communication. The vehicle-mounted terminal includes:

[0034] A sensor module is installed inside the vehicle to detect the concentration of dangerous gases inside the vehicle and output a gas detection signal;

[0035] Infrared sensor, installed on the front windshield of the vehicle, is used to detect infrared signals emitted by the human body;

[0036] The microprocessor module is electrically connected to the sensor module and the infrared sensor, and is used to receive the gas detection signal and the infrared signal, analyze and process the gas detection signal and the infrared signal, and output alarm data;

[0037] The main controller module is connected to the microprocessor module, the window controller, and the air conditioning controller, and is used to receive alarm data and output control signals to the windows and air conditioning;

[0038] The communication module is connected to the main controller module and is used to convert the control signal into a standard communication protocol.

[0039] The model of the microprocessor module is STM32F103, and the model of the main controller module is ATmega328P.

[0040] The cloud platform is wirelessly connected to a mobile terminal.

[0041] Reference Figure 4 The main controller module includes a delay module, which is connected to the sunroof controller and the air-conditioning controller. The delay module is connected to the cloud platform and is used to receive a delayed start signal from the mobile terminal and send a delayed start signal to the sunroof controller and the air-conditioning controller.

[0042] The sensor module includes a nitrogen monoxide sensor, a PM detection sensor, a methane sensor, a carbon monoxide sensor, a carbon dioxide detection sensor, a hydrocarbon detection sensor, a nitrogen oxide detection sensor, and an oxygen content detection sensor.

[0043] The various sensors in the sensor module are distributed in different locations inside the vehicle to continuously monitor the interior environment.

[0044] Nitric oxide sensors, carbon monoxide sensors, carbon dioxide sensors, hydrocarbon sensors, and nitrogen oxide sensors are designed to detect different harmful gases. When harmful gas molecules come into contact with the sensitive elements in the sensor, the electrical properties of the sensitive elements change, generating an electrical signal related to the concentration of the harmful gas.

[0045] The nitric oxide sensor has a nitric oxide gas sensor, the carbon monoxide sensor has a carbon monoxide gas sensor, the carbon dioxide sensor has a carbon dioxide gas sensor, the hydrocarbon sensor has a hydrocarbon gas sensor, the nitrogen oxide sensor has a nitrogen oxide gas sensor, and the methane sensor has a methane gas sensor. The PM sensor detects the concentration of particulate matter in the air and outputs a corresponding signal. Laser scattering is used to measure the number and size of particulate matter.

[0046] The infrared sensor, located on the front windshield, determines whether a person is inside the vehicle by detecting infrared signals of a specific wavelength emitted by the human body. When a person is inside the vehicle, their body heat radiates infrared light, which the infrared sensor receives, converts into electrical signals, and transmits to the microprocessor module.

[0047] The main controller module is electrically connected to the display screen.

[0048] Reference Figure 3 , the microprocessor module includes an analog-to-digital converter and a timing module.

[0049] The communication module is equipped with an RS485 communication interface and outputs control signals via the RS485 communication interface.

[0050] The communication module is equipped with an RS485 communication interface. It converts the alarm data output by the microprocessor module into a standard RS485 communication protocol and transmits the data to the cloud platform via wireless communication. The communication module also receives commands from the cloud platform and mobile terminals and transmits them to the microprocessor module and main controller module.

[0051] The main controller module is electrically connected to an indicator light.

[0052] The main controller module is electrically connected to a digital-to-analog converter, the digital-to-analog converter is connected to a power amplifier, and the power amplifier is connected to a speaker.

[0053] The main controller module and the microprocessor module are both connected to a power supply, and the power supply adopts a UPS power supply.

[0054] Reference Figure 1 The microprocessor module receives electrical signals from the sensor module and infrared sensor. The analog-to-digital converter converts these analog signals into digital signals for digital processing. The communication module is responsible for converting the processed alarm data into a standard communication protocol for transmission to the cloud platform and receiving instructions from the cloud platform and mobile terminals.

[0055] The timing module triggers the sensor module to monitor the air every 15 minutes based on a preset time interval. The main controller module receives alarm data output by the microprocessor module. If the alarm data indicates that the concentration of harmful gases in the vehicle exceeds the standard or there is another abnormality, the main controller module outputs a control signal according to the preset control strategy.

[0056] If the infrared sensor detects someone inside the vehicle, the main controller module illuminates the indicator light and simultaneously issues a voice notification through the digital-to-analog converter, power amplifier, and speaker indicating excessive gas levels. The main controller module then lowers the windows or activates the air conditioner to improve air quality inside the vehicle.

[0057] If the infrared sensor detects no one in the vehicle but hazardous gas concentrations exceed the permitted limit, the main controller module sends a signal to the cloud platform via the communication module and then to the mobile terminal, alerting the driver. If the driver plans to drive after leaving home, they can use their mobile terminal to send a delayed start signal to the delay module. Upon receiving the signal, the delay module sends a delayed start signal to the sunroof and air conditioning controllers within a preset time, opening the sunroof and air conditioning in advance to ensure good air quality when the driver enters the cabin.

[0058] The cloud platform connects wirelessly to the vehicle terminal's communication module, receiving alarm data and other information uploaded by the vehicle terminal. It can also wirelessly connect to mobile terminals to push in-vehicle air quality information to them.

[0059] A corresponding application is installed on the mobile terminal, through which users can view the air quality status in the car in real time, receive alarm information, and send instructions such as delayed start signals to the on-board terminal to achieve remote control of the harmful gas detection and control system in the car.

[0060] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A harmful gas detection and control system in a vehicle, characterized in that: The system includes a cloud platform and an on-board terminal connected to the cloud platform via wireless communication, wherein the on-board terminal includes: A sensor module is installed inside the vehicle to detect the concentration of dangerous gases inside the vehicle and output a gas detection signal; Infrared sensor, installed on the front windshield of the vehicle, is used to detect infrared signals emitted by the human body; The microprocessor module is electrically connected to the sensor module and the infrared sensor, and is used to receive the gas detection signal and the infrared signal, analyze and process the gas detection signal and the infrared signal, and output alarm data; The main controller module is connected to the microprocessor module, the window controller, and the air conditioning controller, and is used to receive alarm data and output control signals to the windows and air conditioning; The communication module is connected to the main controller module and is used to convert the control signal into a standard communication protocol.

2. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The cloud platform is wirelessly connected to a mobile terminal.

3. The in-vehicle harmful gas detection and control system according to claim 2, characterized in that: The main controller module includes a delay module, which is connected to the sunroof controller and the air-conditioning controller. The delay module is connected to the cloud platform and is used to receive a delayed start signal from the mobile terminal and send a delayed start signal to the sunroof controller and the air-conditioning controller.

4. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The sensor module includes a nitrogen monoxide sensor, a PM detection sensor, a methane sensor, a carbon monoxide sensor, a carbon dioxide detection sensor, a hydrocarbon detection sensor, a nitrogen oxide detection sensor, and an oxygen content detection sensor.

5. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The main controller module is electrically connected to the display screen.

6. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The microprocessor module includes an analog-to-digital converter and a timing module.

7. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The communication module is equipped with an RS485 communication interface and outputs control signals via the RS485 communication interface.

8. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The main controller module is electrically connected to an indicator light.

9. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The main controller module is electrically connected to a digital-to-analog converter, the digital-to-analog converter is connected to a power amplifier, and the power amplifier is connected to a speaker.

10. The in-vehicle harmful gas detection and control system according to claim 1, characterized in that: The main controller module and the microprocessor module are both connected to a power supply, and the power supply adopts a UPS power supply.

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