Motor vehicle equipped with forced ventilation system, forced ventilation system and control method

Abstract

The present invention discloses a motor vehicle equipped with a forced ventilation system, a forced ventilation system and a control method in the field of motor vehicle air conditioning technology, aiming to solve the technical problem in the prior art that when a motor vehicle is not in a driving state, the ventilation in the vehicle is poor and a safety accident is easily caused. The invention comprises: an air inlet arranged on the roof, a ventilator is installed at one end of the air inlet, a filter is installed at the other end, a boss is provided at the air inlet, the filter is fixed on the boss, an electric baffle is arranged at the air inlet, and the filter is located between the electric baffle and the ventilator; the ventilator and the electric baffle are electrically connected to a controller, and the controller is electrically connected to a vehicle battery of the motor vehicle; the controller controls the start and stop of the ventilator and the opening and closing of the electric baffle according to the detection signals received from the speed sensor, the temperature sensor, the carbon monoxide sensor and the pressure sensor; the controller is also electrically connected to an alarm and at least one electric window.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor vehicle air conditioning, and in particular relates to a motor vehicle equipped with a forced ventilation system, a forced ventilation system and a control method. Background Art

[0002] With the advancement of technology, various long-distance and short-distance buses are increasingly adopting closed designs. The ventilation in the car mainly depends on the regulation of the air-conditioning system, and the operation of the air-conditioning system depends on the operation of the engine. However, when the bus is in a stopped state, the air-conditioning system is also closed in most cases, which brings some safety hazards; for example, due to the negligence and lack of safety awareness of the driver, the underage children are forgotten in the bus. After the bus is exposed to the sun for a long time, the underage children are suffocated by high temperature; also due to the negligence and lack of safety awareness of the driver, the driver falls asleep while resting in the car with the air-conditioning on. Since the engine is in an idling state, incomplete combustion is prone to occur, thus producing carbon monoxide. Carbon monoxide enters the car with the air-conditioning system, causing the people resting in the car to inhale excessive carbon monoxide and suffocate due to lack of oxygen. Analyzing the above accidents, the reason is that the motor vehicle is a closed space. When the motor vehicle is not in a driving state, the ventilation in the car is poor, which is easy to produce high temperature and accumulate harmful gases, and finally cause safety accidents. Summary of the invention

[0003] The purpose of the present invention is to provide a motor vehicle equipped with a forced ventilation system, a forced ventilation system and a control method, so as to solve the technical problem in the prior art that when the motor vehicle is not in a driving state, the ventilation in the vehicle is poor, which easily causes safety accidents.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a forced ventilation system for a motor vehicle, comprising: an air inlet arranged on the roof, a ventilator installed at one end of the air inlet, and a filter installed at the other end, the air inlet is provided with a boss, the filter is fixed on the boss, an electric baffle is provided at the air inlet, and the filter is located between the electric baffle and the ventilator; the ventilator and the electric baffle are electrically connected to a controller, and the controller is electrically connected to a vehicle-mounted battery of the motor vehicle; the controller is electrically connected to a speed sensor, a temperature sensor, a carbon monoxide sensor and a pressure sensor installed in the motor vehicle, and the controller controls the start and stop of the ventilator and the opening and closing of the electric baffle according to the received detection signals of the speed sensor, the temperature sensor, the carbon monoxide sensor and the pressure sensor; the controller is also electrically connected to an alarm and at least one electric window.

[0005] Furthermore, the air inlet is provided with a streamlined surface in a direction toward the front of the motor vehicle.

[0006] Furthermore, there are a plurality of pressure sensors, and the plurality of pressure sensors are respectively installed under seats of the motor vehicle.

[0007] Furthermore, there are at least two carbon monoxide sensors, one of which is installed inside the motor vehicle, and the other is installed at the exhaust pipe outlet of the motor vehicle.

[0008] Furthermore, when the speed sensor detects that the speed of the motor vehicle is zero and the data detected by at least one pressure sensor exceeds a pressure threshold, if the carbon monoxide concentration detected by the carbon monoxide sensor installed at the exhaust pipe outlet of the motor vehicle exceeds a first threshold, the controller starts the forced ventilation system and triggers the alarm at the same time; if the carbon monoxide concentration detected by the carbon monoxide sensor installed inside the motor vehicle exceeds a second threshold, the controller opens at least one electric window of the motor vehicle.

[0009] Furthermore, when the speed sensor detects that the speed of the motor vehicle is zero, and the data detected by at least one pressure sensor exceeds a pressure threshold, and the data detected by the temperature sensor exceeds a temperature threshold, the controller starts the forced ventilation system and triggers the alarm at the same time; when the alarm is not released within a set time, the controller opens at least one electric window of the motor vehicle.

[0010] Further, when the speed of the motor vehicle detected by the speed sensor is not zero, the forced ventilation system is not started.

[0011] A control method for a motor vehicle forced ventilation system, comprising:

[0012] Collect the speed value of the motor vehicle, the pressure value of the motor vehicle seat, the temperature value inside the vehicle, the carbon monoxide concentration inside the vehicle and the carbon monoxide concentration at the exhaust pipe outlet;

[0013] When the speed value of the motor vehicle is zero, and the data detected by at least one pressure sensor exceeds the pressure threshold, and the data detected by the temperature sensor exceeds the temperature threshold, the controller starts the forced ventilation system and triggers the alarm; when the alarm is not released after a set time, the controller opens at least one electric window of the motor vehicle;

[0014] When the speed value of the motor vehicle is zero and the data detected by at least one pressure sensor exceeds the pressure threshold, if the carbon monoxide concentration detected by the carbon monoxide sensor installed at the exhaust pipe outlet of the motor vehicle exceeds the first threshold, the controller starts the forced ventilation system and triggers the alarm at the same time; if the carbon monoxide concentration detected by the carbon monoxide sensor installed inside the motor vehicle exceeds the second threshold, the controller opens at least one electric window of the motor vehicle;

[0015] When the speed value of the motor vehicle is not zero, the forced ventilation system is not activated.

[0016] A motor vehicle equipped with a forced ventilation system, the motor vehicle comprising the aforementioned forced ventilation system.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The present invention provides a forced ventilation system on the roof of the vehicle and starts it when the set conditions are met, thereby enhancing ventilation in the motor vehicle and improving the air conditions in the motor vehicle. The forced ventilation system has a simple structure and does not occupy space in the vehicle. The exterior adopts a streamlined design, which reduces air resistance during the driving of the motor vehicle and reduces fuel consumption. When the forced ventilation system is not started, the electric baffle is in a closed state, keeping the motor vehicle in a closed state.

[0019] (2) The present invention determines whether a motor vehicle is moving by means of a speed sensor, determines whether there is someone in a non-moving motor vehicle by means of a pressure sensor, detects the temperature inside the vehicle by means of a temperature sensor, and starts a forced ventilation system and sounds an alarm when conditions are met, thereby protecting minors locked in the vehicle and preventing safety accidents;

[0020] (3) The present invention determines whether a motor vehicle is moving by means of a speed sensor, determines whether there is someone in a motor vehicle when it is not moving by means of a pressure sensor, detects the carbon monoxide concentration in the vehicle by means of a carbon monoxide sensor, and starts a forced ventilation system and sounds an alarm when conditions are met, thereby protecting the driver who is resting in the vehicle and preventing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a cross-sectional schematic diagram of a forced ventilation system provided by an embodiment of the present invention in an installed state;

[0022] Figure 2 is a system block diagram of a forced ventilation system provided by an embodiment of the present invention;

[0023] Figure 3 is a schematic diagram of the connection relationship between the carbon monoxide sensor and the exhaust pipe in an embodiment of the present invention;

[0024] Figure 4 yes Figure 3 AA view of the . DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0026] Embodiment 1:

[0027] like Figure 1 , Figure 2 As shown, a motor vehicle forced ventilation system comprises: an air inlet 1 arranged on a roof 5, a ventilator 2 is installed at one end of the air inlet 1, and a filter 3 is installed at the other end. The air inlet 1 is provided with a boss 11, and the filter 3 is fixed on the boss 11 by a connecting member with a disassembly function such as a bolt or a slot, so as to facilitate the replacement of the filter 3; the boss 11 is used to install the filter 3, and can also prevent external rainwater from entering the vehicle through the air inlet 1. An electric baffle 4 is arranged at the air inlet 1, and the filter 3 is located between the electric baffle 4 and the ventilator 2; the electric baffle 4 is an external barrier of the air inlet 1, which is usually in a closed state to prevent small animals or insects from entering the air inlet 1 and causing blockage, and can also prevent rainwater or sewage from entering the vehicle during car washing. Even if a small amount of water enters, it will not enter the interior of the motor vehicle due to the blocking of the internal boss 11, thereby protecting the roof sheet metal and the ventilator 2 and avoiding corrosion damage. In this embodiment, in order to adapt to the roof installation environment, the flow channel of the air inlet 1 is set at 90°, that is, the air inlet of the air inlet 1 faces the rear of the motor vehicle, and the air outlet of the air inlet 1 faces downward through the ventilator 2 to enter the vehicle. At the same time, the air inlet 1 is provided with a streamlined surface 12 in the direction toward the front of the motor vehicle to reduce wind resistance and reduce fuel consumption; at the same time, the streamlined surface 12 is in contact with the outer surface of the roof 5, and the overall shape is also more beautiful.

[0028] The ventilator 2 and the electric baffle 4 are electrically connected to the controller, and the controller is electrically connected to the vehicle battery of the motor vehicle, which provides the power required for the forced ventilation system to operate. The controller is electrically connected to the speed sensor, temperature sensor, carbon monoxide sensor and pressure sensor installed in the motor vehicle. There are multiple pressure sensors, which are installed under each seat of the motor vehicle respectively, to determine whether there is someone in the vehicle. If the output of a pressure sensor is not zero or there are continuous intermittent output signals, it means that there is someone on the seat where the pressure sensor is located. There are at least two carbon monoxide sensors, one of which is installed inside the motor vehicle to detect the carbon monoxide concentration inside the motor vehicle, and the other is installed at the end of the exhaust pipe of the motor vehicle to detect the carbon monoxide concentration in the exhaust gas of the motor vehicle. Figure 3 , Figure 4As shown, the end section of the exhaust pipe includes a silencer section 6 and an exhaust pipe 7. The exhaust gas is discharged from the exhaust pipe 7 after being silenced by the silencer section 6. The silencer section 6 is provided with a threaded boss 61, and the carbon monoxide sensor is threadedly connected to the threaded boss 61 through a mounting seat. At the end of the silencer section 6, a baffle 62 is provided at a set distance from the inlet of the exhaust pipe 7. The baffle 62 is fixedly connected to the shell of the silencer section 6 through a bracket 63, and the baffle 62 is directly opposite to the inlet of the exhaust pipe 7. The carbon monoxide sensor is flush with the inlet of the exhaust pipe 7. The baffle 62 is used to change the flow direction of the exhaust gas. By adjusting the distance between the baffle 62 and the inlet of the exhaust pipe 7 and the length of the carbon monoxide sensor extending into the silencer section, the purpose of flushing the carbon monoxide sensor probe with the exhaust gas flow is achieved, thereby preventing the carbon monoxide sensor probe from accumulating dust and causing the probe to fail. The distance between the baffle 62 and the entrance of the exhaust pipe 7 and the length of the carbon monoxide sensor extending into the silencer section are related to the exhaust volume of the motor vehicle. For a certain motor vehicle, the distance between the baffle 62 and the entrance of the exhaust pipe 7 and the length of the carbon monoxide sensor extending into the silencer section are a set of determined values ​​after testing.

[0029] The temperature sensor is used to detect the temperature inside the motor vehicle, and the speed sensor is used to determine whether the vehicle is in a driving state. The controller controls the start and stop of the ventilator 2 and the opening and closing of the electric damper 4 according to the detection signals received from the speed sensor, temperature sensor, carbon monoxide sensor and pressure sensor; in this embodiment, the ventilator 2 and the electric damper 4 are synchronously controlled by the controller, that is, when the ventilator 2 is started, the electric damper 4 is opened, and when the ventilator 2 is stopped, the electric damper 4 is closed; while ensuring smooth ventilation, the ventilator 2 and the filter 3 are protected to extend their service life. The filter 3 plays a filtering role when the forced ventilation system is working, preventing large particles of impurities in the air from entering the motor vehicle, which can improve the air quality inside the vehicle.

[0030] In this embodiment, a stepped flange is provided on the air inlet 1 and matches the stepped flange on the roof 5. The air inlet 1 is installed in place from the outside of the roof 5 and is fixed from the inside of the motor vehicle by connecting parts such as bolts or slots, so as to facilitate replacement or maintenance. In this embodiment, a sealant or a sealing gasket can be provided between the air inlet 1 and the roof 5 to reduce the gap between the air inlet 1 and the roof 5, improve the fit, and prevent rainwater and the like from entering the vehicle through the gap between the air inlet 1 and the roof 5, thereby affecting the cleanliness of the vehicle and corroding the roof sheet metal.

[0031] The air inlet 1 can be replaced as a whole, or only the ventilator 2 can be replaced. The ventilator 2 is fixed to the air inlet 1 by bolts. When the filter 3 needs to be replaced, the ventilator 2 is first removed from the vehicle, and then the filter 3 is removed from the vehicle. After replacement, it can be reset in the opposite order. In this embodiment, the electric baffle is driven by a micro-stepping motor. The electric baffle can be set as a whole piece as needed, or it can be set in the form of a blind, and it is specifically designed according to ventilation needs and installation space. In this embodiment, the controller adopts a single-chip microcomputer, model: STC15W201S; this embodiment strengthens the ventilation in the motor vehicle and improves the air conditions in the motor vehicle by setting a forced ventilation system on the roof and starting it after the set conditions are met; the forced ventilation system has a simple structure and does not occupy the space in the vehicle. The exterior adopts a streamlined design, which reduces the air resistance during the driving of the motor vehicle and reduces fuel consumption. When the forced ventilation system is not started, the electric baffle is in a closed state to keep the motor vehicle in a closed state. In this embodiment, the controller is also electrically connected to the alarm and at least one electric window. After the forced ventilation system is started, the alarm is turned on to emit an audible and visual alarm signal to alert people around that an abnormal situation has occurred in the motor vehicle and that help is needed. At the same time, the controller also opens at least one electric window according to the set conditions to complete self-rescue or assisted rescue.

[0032] Embodiment 2:

[0033] Based on the motor vehicle forced ventilation system described in Example 1, this embodiment provides a control method for the motor vehicle forced ventilation system. This embodiment is also a method for using the motor vehicle forced ventilation system described in Example 1.

[0034] 1) Collect the speed value of the motor vehicle, the pressure value of the motor vehicle seat, the temperature value inside the vehicle, the carbon monoxide concentration inside the vehicle and the carbon monoxide concentration at the end of the exhaust pipe;

[0035] The pressure sensors installed under each seat of the motor vehicle are used to determine whether there is someone in the vehicle. If the output of the pressure sensor is not zero or there are continuous intermittent output signals, it means that there is someone on the seat where the pressure sensor is located; one of the carbon monoxide sensors is installed inside the motor vehicle to detect the carbon monoxide concentration inside the motor vehicle, and the other is installed at the end of the exhaust pipe of the motor vehicle to detect the carbon monoxide concentration in the exhaust gas of the motor vehicle; the temperature sensor is used to detect the temperature inside the motor vehicle, and the speed sensor is used to determine whether the vehicle is in a driving state;

[0036] 2) When the speed value of the motor vehicle is zero, and the data detected by at least one pressure sensor exceeds the pressure threshold, and the data detected by the temperature sensor exceeds the temperature threshold, the controller starts the forced ventilation system and triggers the alarm; when the alarm is not released after a set time, the controller opens at least one electric window of the motor vehicle;

[0037] The speed value of the motor vehicle is zero, indicating that the motor vehicle is in a non-driving state; the data detected by the pressure sensor exceeds the pressure threshold, indicating that there is someone in the car; when the data detected by the temperature sensor exceeds the set temperature threshold, the controller starts the ventilator 2 and opens the electric baffle 4 at the same time, and the controller triggers the alarm to send an audible and visual alarm to the surrounding pedestrians, reminding the surrounding people that an abnormal situation has occurred in the motor vehicle and needs help; when the alarm is not released after the set time, the controller sends a start signal to the electric window control device of the motor vehicle to open at least one electric window of the motor vehicle to assist rescue or help the people in the car to complete self-rescue; this start-up method is suitable for situations where minors are locked in the motor vehicle and cannot escape; as an upgraded version of this embodiment, the controller can integrate a communication module, and when the forced ventilation system is started, the communication module sends an alarm message to the driver to remind the driver that someone is trapped in the car;

[0038] 3) When the speed value of the motor vehicle is zero and the data detected by at least one pressure sensor exceeds the pressure threshold, if the carbon monoxide concentration detected by the carbon monoxide sensor installed at the end of the exhaust pipe of the motor vehicle exceeds the first threshold, the controller starts the forced ventilation system and triggers the alarm at the same time; if the carbon monoxide concentration detected by the carbon monoxide sensor installed inside the motor vehicle exceeds the second threshold, the controller opens at least one electric window of the motor vehicle;

[0039] This starting mode is suitable for the situation that the driver falls asleep while resting in the car with the air conditioner on. Since carbon monoxide poisoning is difficult to detect, when the carbon monoxide sensor installed at the end of the exhaust pipe of the motor vehicle detects that the concentration of carbon monoxide exceeds the first threshold, the ventilator 2 is started and the electric damper 4 is opened at the same time. At the same time, the controller triggers the alarm to send an audible and visual alarm to the surrounding pedestrians, reminding the surrounding people that an abnormal situation has occurred in the motor vehicle and needs help. At the same time, it also reminds the driver who is resting in the car that the engine is not fully burned and the carbon monoxide concentration has exceeded the safety standard, and timely disposal measures need to be taken; when the carbon monoxide concentration detected by the carbon monoxide sensor installed inside the motor vehicle exceeds the second threshold, it means that the driver has failed to take timely measures and the situation is deteriorating. The controller sends a starting signal to the electric window control device of the motor vehicle to open at least one electric window of the motor vehicle to enhance ventilation in the vehicle and prevent the situation from further deteriorating.

[0040] 4) When the speed value of the motor vehicle is not zero, the forced ventilation system does not start;

[0041] The speed value of the motor vehicle is not zero, which means that the motor vehicle is moving, the driver is awake, and the forced ventilation system needs to be started.

[0042] Embodiment three:

[0043] Based on the motor vehicle forced ventilation system described in Example 1 and the control method of the motor vehicle forced ventilation system described in Example 2, this embodiment provides a motor vehicle equipped with a forced ventilation system. The motor vehicle is equipped with the forced ventilation system described in Example 1 and can be controlled according to the control method of the motor vehicle forced ventilation system described in Example 2.

[0044] The forced ventilation system of the present invention is suitable for ventilation of various closed-type long-distance and short-distance passenger vehicles in emergency situations, and is also suitable for forced ventilation of the cab of long-distance trucks and family passenger cars.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A motor vehicle forced ventilation system, characterized in that: include: An air inlet is arranged on the roof of the vehicle, a ventilator is installed at one end of the air inlet, and a filter is installed at the other end, the air inlet is provided with a boss, the filter is fixed on the boss, an electric baffle is arranged on the air inlet, and the filter is located between the electric baffle and the ventilator; the ventilator and the electric baffle are electrically connected to a controller, and the controller is electrically connected to a vehicle battery of the motor vehicle; the controller is electrically connected to a speed sensor, a temperature sensor, a carbon monoxide sensor and a pressure sensor installed in the motor vehicle, and the controller controls the start and stop of the ventilator and the opening and closing of the electric baffle according to the received detection signals of the speed sensor, the temperature sensor, the carbon monoxide sensor and the pressure sensor; the controller is also electrically connected to an alarm and at least one electric window; The air inlet is provided with a streamlined surface in a direction toward the front of the motor vehicle; There are a plurality of pressure sensors, and the plurality of pressure sensors are respectively installed under the seats of the motor vehicle; There are at least two carbon monoxide sensors, one of which is installed inside the motor vehicle and the other is installed at the exhaust pipe outlet of the motor vehicle; When the speed sensor detects that the speed of the motor vehicle is zero and the data detected by at least one pressure sensor exceeds the pressure threshold, if the carbon monoxide concentration detected by the carbon monoxide sensor installed at the exhaust pipe outlet of the motor vehicle exceeds the first threshold, the controller starts the forced ventilation system and triggers the alarm at the same time; If the carbon monoxide concentration detected by the carbon monoxide sensor installed inside the motor vehicle exceeds a second threshold, the controller opens at least one electric window of the motor vehicle; When the speed sensor detects that the speed of the motor vehicle is zero, and the data detected by at least one pressure sensor exceeds a pressure threshold, and the data detected by the temperature sensor exceeds a temperature threshold, the controller starts the forced ventilation system, and the controller triggers an alarm; When the alarm is not released after a set time, the controller opens at least one electric window of the motor vehicle; When the speed of the motor vehicle detected by the speed sensor is not zero, the forced ventilation system is not activated.

2. A control method for a motor vehicle forced ventilation system, characterized in that: Based on the motor vehicle forced ventilation system according to claim 1, the method comprises: Collect the speed value of the motor vehicle, the pressure value of the motor vehicle seat, the temperature value inside the vehicle, the carbon monoxide concentration inside the vehicle and the carbon monoxide concentration at the exhaust pipe outlet; When the speed value of the motor vehicle is zero, and the data detected by at least one pressure sensor exceeds the pressure threshold, and the data detected by the temperature sensor exceeds the temperature threshold, the controller starts the forced ventilation system and triggers the alarm; when the alarm is not released after a set time, the controller opens at least one electric window of the motor vehicle; When the speed value of the motor vehicle is zero and the data detected by at least one pressure sensor exceeds the pressure threshold, if the carbon monoxide concentration detected by the carbon monoxide sensor installed at the exhaust pipe outlet of the motor vehicle exceeds the first threshold, the controller starts the forced ventilation system and triggers the alarm at the same time; if the carbon monoxide concentration detected by the carbon monoxide sensor installed inside the motor vehicle exceeds the second threshold, the controller opens at least one electric window of the motor vehicle; When the speed value of the motor vehicle is not zero, the forced ventilation system is not activated.

3. A motor vehicle equipped with a forced ventilation system, characterized in that: The motor vehicle comprises a motor vehicle forced ventilation system as claimed in claim 1 .

Images