KR20000039045A - Apparatus for preventing suffocation for vehicle and control method thereof - Google Patents

Abstract

PURPOSE: A method for controlling an apparatus for preventing suffocation for vehicles is provided to prevent suffocation of a passenger by operating a window motor according to a concentration of oxygen and room temperature in a vehicle to ventilate and supply external air to the inside. CONSTITUTION: A method for controlling an apparatus for preventing suffocation for vehicles includes the steps of determining whether a passenger is existing or not in a vehicle or not by an infrared ray sensing system(S30), detecting a concentration of oxygen and room temperature in the vehicle if a passenger is existing(S30,S50), setting a window operation for opening a window if the temperature is higher than a reference temperature and the concentration of oxygen is lower than a reference concentration and closing the window if the temperature is lower than a reference temperature and the concentration of oxygen is higher than a reference concentration, performing the window operation according to the preset mode(S60).

Description

Vehicle choking prevention device and control method

The present invention relates to a device for preventing asphyxiation of a vehicle and a control method thereof. Specifically, when a vehicle is occupant, the window can be automatically opened when the temperature in the vehicle room is higher than the reference temperature or the oxygen concentration in the vehicle is lower than the reference concentration. The present invention relates to a vehicle choking prevention device and a control method thereof.

There are many different types of vehicles in the world today, including sedans, hatchbacks and coupe. Typically, sedan-type vehicles have four occupant doors, and hatchbacks have four occupant and one rear door. The coupe has two occupant doors and one rear door.

The occupant door of each type of vehicle described above has a window made of glass, which can be opened or closed manually or automatically. As automotive technology advances, the windows in the doors are changing to automatics, also known as power windows.

The power window can open and close the window by the power of the motor, the power window is usually provided with a window opening and closing switch on the armrest portion of the door and the occupant can open and close the window by operating the opening and closing switch.

Conventional power windows operate with the key switch on and the occupant operating the window open / close switch. However, when all the windows are closed, the driver may pull out the keyswitch and get off and there may be a child or a pet left in the vehicle cabin. In such a case, if the adult is in the cabin, the door can be opened but children and pets will not be able to open the door.

So, if the temperature in the vehicle room rises, if there is a creature such as a person or pet in the vehicle room, there was a problem in breathing difficult.

The present invention has been made to solve the above problems, the object of the present invention is to drive the window by driving the window motor when the temperature in the vehicle cabin is above the reference temperature or the oxygen concentration in the vehicle is below the reference concentration when the occupant is in the vehicle It is to provide a choking prevention device and a control method for the vehicle that can be automatically opened.

1 is a circuit diagram of a first embodiment according to the present invention.

2 is a block diagram of a second embodiment of a vehicle choking prevention device according to the present invention.

3 is a control flowchart of a second embodiment of a vehicle choking prevention device according to the present invention.

Explanation of symbols on the main parts of the drawings

11: Temperature sensor 13: Comparator

20: Passenger detection unit 31: Logical gate

32: transistor 40: relay

41: relay coil 42: relay switch

50: battery 60: window motor

70: temperature detection unit 80: passenger detection unit

90: oxygen concentration detection unit 100: window opening and closing setting unit

110: microcontroller 120: window motor drive unit

130: battery 141, 142, 143, 144: window motor

150: window opening and closing detection unit

In order to realize the above object, a vehicle choking prevention device and a control method thereof according to the present invention include a plurality of window motors for opening and closing the windows of each door, and the window motor to open and close the windows of each door. In a vehicle having a window motor driving unit for forward and reverse rotation, the vehicle is connected to a temperature sensing unit for sensing a temperature inside the vehicle, a passenger sensing unit for detecting the presence of a passenger in the vehicle, a temperature sensing unit, and an output terminal of the passenger sensing unit. An analog / digital converter for converting signals to digital, an input port for receiving digital signals, and an output connected to the window motor driver to output the control signal of the window motor driver according to the detection result of the temperature sensor and the passenger detector It is a configuration characterized by including a microcontroller including a port. In the control method of the vehicle choking prevention device, if the passenger is determined in the passenger judging stage and the passenger judging stage in the interior of the vehicle, the temperature and oxygen concentration of the vehicle interior are sensed and the temperature is higher than the reference temperature. Or the window is opened when the oxygen concentration is lower than the standard concentration. If the temperature is lower than the standard temperature and the oxygen concentration is higher than the standard concentration, the setting step is set to close the window, and the window operation step of opening or closing the window according to the result of the setting step is performed. It is a method characterized by including.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment according to the present invention.

1 is a circuit diagram of a first embodiment according to the present invention.

2 is a block diagram of a second embodiment of a vehicle choking prevention device according to the present invention.

3 is a control flowchart of a second embodiment of a vehicle choking prevention device according to the present invention.

First, the first embodiment will be described with reference to FIG. 1.

A first embodiment of a vehicle choking prevention device and a control method according to the present invention, is installed on one side of the ceiling of the vehicle interior so as to sense the temperature above the vehicle interior without receiving sunlight directly entering the vehicle interior If the temperature is higher than the reference temperature is provided with a temperature detection unit 10 for outputting a high signal, and a passenger detection unit 20 for outputting a high signal when detecting a passenger in the vehicle cabin.

The input terminal is connected to the output terminal of the temperature sensing unit 10 and the passenger sensing unit 20 so that the high signal can be output when the signals output from the temperature sensing unit 10 and the passenger sensing unit 20 are all high signals. Drives in accordance with the switching operation of the transistor 32 and the transistor 32 whose base is connected to the output terminal of the AND gate 31 so as to be switched in accordance with the output signal of the AND gate 31. The power supply can be supplied to the relay coil 41 connected between the battery 50 and the collector of the transistor 32 and the window motor 60 which opens and closes the contact according to the operation of the relay coil 41. And a relay switch 42 connected between the battery 42 and the window motor 60.

The above-described passenger detection unit 20 is made of an infrared sensor that can detect the infrared rays emitted from living things such as people or pets in the vehicle cabin.

The operation of the first embodiment is described below.

The temperature sensor 11 of the temperature sensor 10 detects a temperature in a vehicle room, and an output value varies according to the detected temperature. The signal output from the temperature sensor 11 is input to the non-inverting input terminal of the comparator 13. The comparator 13 outputs a high signal to the logical product gate 31 when the voltage signal input from the temperature sensor 11 is higher than the reference voltage 12 input to the inverting input terminal. At this time, the reference voltage 12 is a voltage corresponding to the reference temperature.

In other words, when the temperature in the vehicle cabin becomes higher than the reference temperature, the temperature detector 10 outputs a high signal to one input terminal of the logical product gate 31.

In addition, the passenger sensing unit 20 detects infrared rays emitted from the living organism, and when the infrared rays are detected, the passenger sensing unit 20 outputs a high signal to the other input terminal of the logical product gate 31.

On the other hand, the logical product gate 31 outputs a high signal only when a high signal is input from both the temperature sensor 10 and the passenger sensor 20 to the input terminal. When the AND gate 31 outputs a high signal, it means that a living organism is currently in the vehicle compartment and the temperature in the vehicle compartment is higher than the reference temperature.

When the AND gate 31 outputs a high signal, the high signal is applied to the base of the transistor 32. Transistor 32 is then turned on. When the transistor 32 is turned on, current flows from the battery 50 to the relay coil 41. When a current flows through the relay coil 41, a magnetic field is generated in the relay coil 41. When the magnetic field is generated in the relay coil 41, the relay switch 42 is connected between the battery 50 and the window motor 60 by the magnetic field. When the battery 50 and the window motor 60 are connected, the window motor 60 opens the window.

Hereinafter, a second embodiment of a vehicle choking prevention device and a control method thereof according to the present invention will be described with reference to FIGS. 2 and 3.

First, the second embodiment according to the present invention includes a microcontroller 110. Looking at the configuration of the microcontroller 110, the microcontroller 110 is typically a memory 112 (ROM, RAM), a central processing unit And an input / output port (I / O) 115 and 116, a clock generator 114, an analog / digital converter 111, and a digital / analog converter (not shown).

First, the memory 112 of the microcontroller 110 is composed of a ROM and a RAM, and the ROM is a read-only memory, in which programs and fixed data are stored, and by changing the programs and data stored in the ROM, the microcontroller ( Not only can the function of 110 be expanded, but the necessary functions can be variously applied. The RAM is used to read data output from the analog / digital converter 111.

The central processing unit 113 of the microcontroller 110 corresponds to the brain of the microcontroller 110 and executes a program stored in the memory 112, and internally executes a calculation circuit, a control circuit, and a register circuit. It includes a device that processes various data by a program read from the memory (112).

In addition, the input / output ports 115 and 116 are connected to the central processing unit 113 as a device for receiving or outputting digital signals. The clock generator 114 generates a pulse for giving the reference timing of the central processing unit 113. In addition, the analog / digital converter 111 converts an analog signal into digital.

Meanwhile, the microcontroller 110 includes a temperature sensor 70 which is installed at one side of the ceiling of the vehicle interior and outputs a signal according to the detected temperature so as not to directly receive sunlight flowing into the vehicle interior and to sense the temperature of the vehicle interior. Is connected to an analog / digital converter 111, and a passenger sensing unit 80 that detects a passenger in a vehicle and outputs a corresponding signal is also connected to the analog / digital converter 111 of the microcontroller 110. have. The above-described passenger detection unit 80 is composed of an infrared sensor that can detect the infrared rays emitted from living things, such as people or pets in the vehicle cabin. In addition, an oxygen concentration detecting unit 90 for detecting the oxygen concentration in the vehicle cabin is connected to the analog / digital converter 111 of the microcontroller 110.

The window opening / closing setting unit 100 which sets a window to be opened and closed when the window is opened and closed is connected to the microcontroller 110.

On the other hand, window motors 141, 142, 143 and 144 for opening and closing the window are connected to the window motor driver 120, and the window motor driver 120 is connected to the output port of the microcontroller 110 and Under the control of the controller 110. The window opening / closing detection unit 150 for detecting the opening and closing of the window is connected to the input port of the microcontroller 110.

Referring to the operation of the second embodiment of the present invention having the above-described configuration is as follows.

First, the user may set a window to be opened and closed through the window opening and closing setting unit 100 (S10). For example, when the window to be opened and closed is set to the driver's seat and the passenger seat window, the window of the driver's seat and the passenger seat is opened and closed when the window is described later. In this embodiment, all windows are opened and closed.

The microcontroller 110 detects a passenger in the vehicle interior (S20). The microcontroller 110 determines whether the passenger boards the passenger by a signal from the passenger detecting unit 80 input to the analog / digital converter 111 to detect the passenger in the vehicle interior. As described above, the passenger detecting unit 80 includes an infrared sensor, which detects infrared rays emitted from a passenger (living body) inside the vehicle and outputs the signal to the analog / digital converter 111 of the microcontroller 110.

The microcontroller 110 determines whether a passenger is on the board depending on whether a signal is input from the passenger sensing unit 80 to the analog / digital converter 111 (S30). If it is determined in step S30 that there is a passenger, the microcontroller 110 detects the temperature of the vehicle interior through a signal input from the temperature sensing unit 70 to the analog / digital converter 111 (S40).

The temperature detector 70 outputs a signal to the analog / digital converter 111 of the microcontroller 110 according to the temperature of the vehicle interior. The analog / digital converter 111 converts a signal input from the temperature sensing unit 70 into a digital signal, and the microcontroller 110 senses the temperature of the current vehicle interior by the digital signal. The microcontroller 110 determines whether the detected current vehicle interior temperature is greater than or equal to the reference temperature (S50).

If it is determined in step S50 that the temperature in the vehicle interior is higher than the reference temperature, the microcontroller 110 determines that the occupant may cause breathing difficulties at the temperature of the vehicle interior, and then opens a window to introduce external air into the vehicle interior. Open.

The microcontroller 110 determines whether the current window is open to open the window (S60). The microcontroller 110 determines whether the window is open based on a signal input from the window open / close detection unit to determine whether the window is open.

If it is determined in S60 that the window is not opened, the microcontroller 110 controls the window motor driver 120 to open the window, and the microcontroller 110 is set through the window opening / closing setting unit 100. When the power of the battery 130 is applied to the window motors 141, 142, 143, and 144 by controlling the window motor driver 120 to open only the windows (all four windows in this embodiment). The window motors 141, 142, 143 and 144 rotate forward to open the window (S61). When the window is opened, the outside air lowers the temperature of the room while ventilating the inside of the vehicle. The microcontroller 110 sets the window open flag to indicate that the window is opened after opening the window (S62).

However, if it is determined in S50 that the temperature in the vehicle cabin is not higher than the reference temperature, the microcontroller 110 detects the oxygen concentration in the vehicle chamber through the oxygen concentration detector 90 (S51). Then, the microcontroller 110 determines whether the detected oxygen concentration in the vehicle cabin is less than the reference concentration (S52). For example, if the occupant turns on the heater (not shown) of the vehicle and the window of the vehicle is closed at bedtime, the oxygen concentration in the vehicle room is lowered, and thus it is determined whether the oxygen concentration in the vehicle room is lower than the reference concentration.

If it is determined in step S52 that the oxygen concentration is less than or equal to the reference concentration, the microcontroller 110 determines that the occupant may cause respiratory distress and opens the window to introduce external air into the vehicle cabin.

The microcontroller 110 determines whether the current window is open to open the window (S60). The microcontroller 110 determines whether the window is opened by a signal input from the window opening / closing detection unit 150 to determine whether the window is open.

If it is determined in S60 that the window is not opened, the microcontroller 110 controls the window motor driver 120 to open the window, and the microcontroller 110 is set through the window opening / closing setting unit 100. When the power of the battery 130 is applied to the window motors 141, 142, 143, and 144 by controlling the window motor driver 120 to open only the windows (all four windows in this embodiment). The window motors 141, 142, 143 and 144 rotate forward to open the window (S61). When the window is opened, the outside air lowers the temperature of the room while ventilating the inside of the vehicle. The microcontroller 110 sets the window open flag to indicate that the window is opened after opening the window (S62).

However, if it is determined in step S52 that the oxygen concentration is greater than or equal to the reference concentration, the microcontroller 110 determines whether the window opening flag is set (S53).

If it is determined in S53 that the window open flag is set, the microcontroller 110 closes the open window. In order to do so, the microcontroller 110 opens the window opened through the window open / close detection unit 150. Detect.

When the open window is detected, the microcontroller 110 controls the window motor driver 120 to close the window to operate the window motor to close the window (S54).

According to the vehicle choke prevention device and the control method according to the present invention, the temperature detection unit for detecting the temperature of the vehicle interior, the passenger detection unit for detecting the presence of organisms including the occupant in the vehicle, and the oxygen concentration in the vehicle interior And a microcontroller connected to the above-described temperature sensing section, the passenger sensing section, and the output stages of the oxygen concentration sensing section to determine whether or not the passenger rides in the vehicle compartment and the temperature and oxygen concentration in the vehicle compartment. If it is determined that there is a passenger according to the signal input from the unit, when the temperature in the vehicle room is above the reference temperature by the signal input from the temperature sensing unit, the window motor driving unit is controlled to operate the window motor to open the window to the outside air. By ventilating the inside of the vehicle, the temperature inside the vehicle can be lowered and outside air can be supplied to the vehicle. The passenger's breathing difficulty can be prevented.

Claims (7)

In a vehicle having a plurality of window motors for opening and closing the windows of each door, and a window motor driver for forward and reverse rotation of the window motor to open and close the windows of each door, Temperature sensing unit for detecting the temperature of the vehicle interior, Passenger detection unit for detecting whether there is a passenger in the vehicle, An analog / digital converter connected to the output terminal of the temperature sensing unit and the passenger sensing unit and converting the signal into a digital signal; an input port for receiving a digital signal; and the window motor driving unit according to a sensing result of the temperature sensing unit and the passenger sensing unit. And a microcontroller including an output port connected to the window motor driver so as to output a control signal of the vehicle. The method of claim 1, The passenger detecting unit is a choke prevention device, characterized in that the infrared sensor is installed on one side of the upper ceiling between the driver's seat and the passenger seat back and the output terminal is connected to the microcontroller. The method of claim 1, The temperature sensing unit is installed on one side of the ceiling in the vehicle interior, characterized in that the output terminal is connected to the microcontroller. The method of claim 1, And an oxygen concentration detecting unit is further connected to the analog / digital converter of the microcontroller so as to detect the oxygen concentration in the vehicle room. In the control method of the vehicle choking prevention device, Passenger determination step of determining whether there is a passenger in the interior of the vehicle, If it is determined that there is an occupant in the passenger judgment step, the temperature of the vehicle interior and oxygen concentration are sensed and if the temperature is above the reference temperature or the oxygen concentration is below the reference concentration, the window is opened and the temperature is below the reference temperature and the oxygen concentration is above the reference concentration. If it is set to close the window, And a window operation step of opening or closing the window according to the result of the setting step. The method of claim 5, The passenger determination step, the control method of the vehicle choke prevention device, characterized in that for determining the presence of occupants in the vehicle by sensing the infrared. The method of claim 5, The setting step may include a temperature judging step of determining whether the temperature in the vehicle cabin is higher than or equal to the reference temperature, and determining whether the oxygen concentration in the vehicle cabin is lower than or equal to the reference concentration when the temperature of the vehicle cabin is not higher than the reference temperature in the temperature determining step. Opening the window setting to open the window when the temperature in the vehicle cabin is determined to be above the reference temperature or the oxygen concentration in the vehicle is determined to be below the reference concentration in the oxygen determination step. If it is determined that the temperature in the vehicle cabin is lower than the reference temperature in the setting step and the temperature determination step, and the oxygen concentration in the vehicle room is determined to be higher than the reference concentration in the concentration determination step, the window is opened if the window opening setting has been previously made. A vehicle quality comprising a window closing setting step of setting to close Control method of food prevention device.