CN108275071B - System for preventing infant in car from being trapped and dead and control method - Google Patents
System for preventing infant in car from being trapped and dead and control method Download PDFInfo
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- CN108275071B CN108275071B CN201810143781.8A CN201810143781A CN108275071B CN 108275071 B CN108275071 B CN 108275071B CN 201810143781 A CN201810143781 A CN 201810143781A CN 108275071 B CN108275071 B CN 108275071B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
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- Emergency Alarm Devices (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a system for preventing infant in a car from being trapped and dying, which comprises: the in-vehicle personnel identification module is used for monitoring whether a person is in the vehicle or not in a parking state; an in-vehicle environment monitoring module for monitoring oxygen concentration, carbon monoxide concentration and temperature in a vehicle; the controller module is used for receiving the monitoring data of the in-vehicle personnel identification module and the in-vehicle environment monitoring module; judging whether a person is in the vehicle according to the monitoring data of the in-vehicle person identification module; judging the in-vehicle environment according to the monitoring data of the in-vehicle environment monitoring module, and adopting a corresponding processing strategy; the automobile CAN bus module is used for sending automobile doors, engine signals, wheel speed signals and storage battery signals to the controller module; and the external communication module is internally provided with a GPRS transmitter and is used for sending emergency information to the outside in emergency. The system for preventing the infant in the car from being trapped and dead can actively identify whether the infant is forgotten in the car or not and take corresponding measures.
Description
Technical Field
The invention belongs to the technical field of automobile cabin safety, and particularly relates to a system for preventing infant in an automobile from being trapped and dying and a control method.
Background
At the moment of the increasing popularity of automobiles, the safety problem of automobiles is becoming more prominent. The death of infants caused by forgetting in the car is frequently reported in recent years. When the infant is forgotten in the car, the air quality in the car is particularly poor due to the narrow space in the car and poor air circulation, especially in hot summer, the temperature in the closed carriage can reach more than sixty degrees, the limit of the infant can be born by very common people, and the infant lacks necessary self-rescue capability, so that tragic cases such as dehydration death and the like are often caused. Meanwhile, if the automobile is stopped in a closed space, the automobile engine rotates at idle speed, and when the air conditioner performs external circulation ventilation, the oxygen concentration is reduced, so that carbon monoxide poisoning is easily caused. It is therefore of great importance to design a system that prevents such accidents.
Disclosure of Invention
The invention aims to provide a system for preventing infant in a car from being trapped and dying, which can actively identify whether the infant is forgotten in the car or not and take corresponding measures to prevent the infant from being trapped and dying in the car.
The invention further aims to provide a control method of the system for preventing the infant in the car from being trapped and dying, which can judge the danger index of the infant according to the change condition of the environment in the car, and adopts different rescue methods according to the danger index, so that the rescue probability of the infant is further improved.
The technical scheme provided by the invention is as follows:
a system for preventing trapped death of an infant in a vehicle, comprising:
the in-vehicle personnel identification module is used for monitoring whether a person is in the vehicle or not in a parking state;
an in-vehicle environment monitoring module for monitoring oxygen concentration, carbon monoxide concentration and temperature in a vehicle;
the controller module is used for receiving the monitoring data of the in-vehicle personnel identification module and the in-vehicle environment monitoring module; judging whether a person is in the vehicle according to the monitoring data of the in-vehicle person identification module; judging the in-vehicle environment according to the monitoring data of the in-vehicle environment monitoring module, and adopting a corresponding processing strategy;
the automobile CAN bus module is connected with the controller module and used for sending a vehicle door, an engine signal, a wheel speed signal and a storage battery signal to the controller module;
and the external communication module is internally provided with a GPRS transmitter, is connected with the controller and transmits emergency information to the outside in emergency.
Preferably, the in-vehicle person identification module includes:
the thermal infrared human body sensor is arranged at the top of the vehicle;
a sound sensor mounted on the roof of the vehicle;
and the pressure sensor is arranged below the rear seat cushion of the automobile.
Preferably, the in-vehicle person identification module further includes: the infrared measuring sensor is arranged at the roof of the automobile corresponding to the rear seat of the automobile and used for measuring the sitting height of an infant.
Preferably, the in-vehicle environment monitoring module includes:
the carbon monoxide monitoring sensor is arranged at the air outlet of the air conditioner;
the temperature monitoring sensor is arranged on the roof and is positioned above the rear seat of the automobile;
and the oxygen concentration monitoring sensor is arranged on the roof and is positioned above the rear seat of the automobile.
A control method of a system for preventing infant in a vehicle from being trapped and dying, comprising the following steps:
step one: the automobile CAN bus module monitors information of the automobile door, the engine and the wheel speed and transmits the information to the controller module;
step two: the sensor module judges whether the automobile is in a parking state according to the wheel speed information monitored by the automobile bus module;
step three: if the automobile is in a parking state, the in-automobile personnel identification module is started and monitors whether a person is in the automobile;
step four: if someone is in the vehicle, an in-vehicle environment monitoring module is started and monitors the oxygen concentration, the carbon monoxide concentration and the temperature in the vehicle;
step five: the controller judges the danger index of the infant according to the environment condition in the vehicle and adopts a corresponding treatment strategy.
Preferably, the controller judges that the automobile is in a stopped state when the automobile door is monitored to be in a closed state and the engine is in a flameout state and the wheel speed is less than 3 km/h.
Preferably, the control method of the system for preventing the infant in the vehicle from being trapped and dying further comprises the following steps: the automobile CAN bus module transmits a storage battery signal to the controller module, and when the fact that the electric quantity of the storage battery is about to be exhausted is monitored, the controller controls the engine to start, idle running is carried out, and the storage battery is charged.
Preferably, the risk index of the infant is calculated according to the environmental condition in the vehicle and the parking time;
wherein C is 0 C is the concentration of oxygen in the vehicle 1 The carbon monoxide concentration in the car is in ppm, T is the temperature in the car, T is the residence time of the infant in the car, and h is in unit.
Preferably, the risk index is corrected according to the pressure transmitted by the pressure sensor and the sitting height of the infant, and the correction coefficient is as follows:
wherein h is the sitting height of the infant and is in cm; f is the unit N of the pressure generated when the infant is at rest.
Preferably, the control method of the system for preventing the infant in the vehicle from being trapped and dying further comprises the following steps:
when I is more than 0 and less than or equal to 0.5, the risk degree is lower; at this time, a warning can be sent to the vehicle owner through the communication module;
when I is more than 0.5 and less than or equal to 1, the vehicle is in a dangerous state; at the moment, a warning is sent to the car owner through the communication module and the car lamp is flashed, so that the attention of passers-by is drawn;
when I > 1, in a very dangerous state; at this time, the lamp blinks, the vehicle is controlled to blast, and the window is opened.
The beneficial effects of the invention are as follows:
the system for preventing the infant in the car from being trapped and dying can actively identify whether the infant is forgotten in the car or not, and adopts corresponding measures to prevent the infant from being trapped and dying in the car.
The control method of the system for preventing the infant in the car from being trapped and dead can judge the danger index of the infant according to the change condition of the environment in the car, and adopts different rescue methods according to the danger index, so that the rescue probability of the infant is further improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a system for preventing infant in a vehicle from being trapped and dying according to the present invention.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
As shown in fig. 1, the present invention provides a system for preventing infant in a vehicle from being trapped and dying, which comprises an in-vehicle personnel identification module connected with a controller module 200 for monitoring whether a person is in the vehicle in a parking state; the in-vehicle personnel identification module comprises: a thermal infrared human body sensor 110 mounted on a roof of the vehicle; a sound sensor 120 mounted on the roof of the vehicle; and a pressure sensor 130 installed under the rear seat cushion of the automobile. When the thermal infrared human body sensor 110 detects that a person is in the car, or the sound sensor 120 recognizes that an infant is crying in the car, or the pressure sensor 130 detects that an object on the seat is moving, the controller module determines that a person is trapped in the car as long as one of the three sensors detects that a person is in the car. The thermal infrared human body sensor, the sound sensor and the pressure sensor are used for simultaneously identifying whether personnel exist in the vehicle, so that the identification accuracy is improved, and the failure of the whole device caused by the failure of one sensor is avoided.
In another embodiment, the in-vehicle human recognition module further comprises: the infrared measurement sensor 140 is disposed at a roof portion corresponding to the rear seat of the automobile, and is used for measuring the sitting height of the infant.
An in-vehicle environment monitoring module, connected to the controller module 200, the in-vehicle environment monitoring module comprising: an oxygen concentration monitoring sensor 310 installed at the roof of the vehicle and located above the rear seat of the vehicle for monitoring the oxygen concentration (percentage of oxygen) in the vehicle; carbon monoxide monitoring sensor 320, which is installed at an air outlet of an air conditioner, for monitoring carbon monoxide concentration, and temperature monitoring sensor 330, which is installed at a roof of a vehicle and above a rear seat of the vehicle, for monitoring temperature in the vehicle. Because the infant generally sits in the rear row of the vehicle, the oxygen concentration sensor and the temperature sensor are arranged above the rear row seat, so that the accuracy of the monitoring result is improved.
The automobile CAN bus module 400 is connected to the controller module 200 and transmits the door, engine signals, wheel speed signals, and battery signals to the controller module.
And the external communication module 500 is internally provided with a GPRS transmitter, and is connected with the controller to send emergency information to the outside in emergency.
The controller module 200 is further connected to a console display, a sound box, an air conditioner, a headlight, an acoustic signal device (speaker), a window control device, an engine, a clutch, an accelerator pedal, and a transmission.
When the controller module 200 determines that the infant is trapped in the car, if the sound sensor 120 detects that the infant is sounding, such as crying, the controller module controls the car audio and the console display to play music baby songs, etc., so as to calm the emotion of the trapped infant. The temperature sensor 330 monitors the temperature in the vehicle, and when the temperature in the vehicle reaches more than 28 ℃ or less than 5 ℃, the controller module 200 turns on the air conditioner in the vehicle to adjust the temperature in the vehicle to be stable between 20 ℃ and 24 ℃. The carbon monoxide concentration in the vehicle is monitored by the carbon monoxide sensor 320, and when the carbon monoxide concentration exceeds 20ppm, the controller module 200 turns off the external circulation of the air conditioner to switch to the internal circulation, preventing the carbon monoxide poisoning of the person in the vehicle.
The invention also provides a control method of the system for preventing the infant in the car from being trapped and dying, which is characterized by comprising the following steps:
step one: the automobile CAN bus module 400 monitors the vehicle door, engine and wheel speed information and transmits it to the controller module.
Step two: the sensor module judges whether the automobile is in a parking state according to the wheel speed information monitored by the automobile bus module; in this embodiment, when the CAN bus module 400 monitors that the door is in a closed state, the engine is in a flameout state, and the wheel speed is less than 3km/h, the controller determines that the vehicle is in a stopped state.
Step three: if the automobile is in a parking state, the in-automobile personnel identification module is started and monitors whether a person is in the automobile; when the thermal infrared human body sensor 110 detects that a person is in the car, or the sound sensor 120 recognizes that an infant is crying in the car, or the pressure sensor 130 detects that an object on the seat is moving, the controller module determines that a person is trapped in the car as long as one of the three sensors detects that a person is in the car.
Step four: if someone is in the vehicle, the in-vehicle environment monitoring module is started and monitors the oxygen concentration, the carbon monoxide concentration and the temperature in the vehicle.
Step five: the controller calculates the danger index of the infant according to the environment condition in the vehicle; and adopting a corresponding processing strategy. In the embodiment, the danger index of the infant is calculated according to the environment condition in the vehicle and the parking time;
wherein C is 0 For the oxygen concentration in the vehicle (for example, the oxygen concentration in the air in the vehicle is 20 percent, then 20 is taken to be calculated in the formula), C 1 The carbon monoxide concentration in the car is in ppm, T is the temperature in the car, T is the residence time of the infant in the car, and h is in unit.
Thereafter, the controller module 200 further adopts a corresponding processing strategy by the calculated risk index I:
when I is more than 0 and less than or equal to 0.5, the risk degree is lower; at this time, a warning can be sent to the vehicle owner through the communication module; and notifying the car owner to catch back as soon as possible, and carrying out rescue.
When I is more than 0.5 and less than or equal to 1, the vehicle is in a dangerous state; at the moment, a warning is sent to the car owner through the communication module, the car lamp is blinked, and meanwhile, a part of car windows can be opened, so that the attention of passersby is brought;
when I > 1, in a very dangerous state; at this time, the lamp blinks, the vehicle is controlled to blast, and the window is completely opened.
Because the battery capacity of the automobile is limited, if the rescue personnel do not arrive late, the battery power consumption is easy to cause, and therefore, when the automobile CAN bus module 400 transmits a battery signal to the controller module, the controller module 200 controls the engine to start and perform idle running to charge the battery when judging that the battery power consumption is about to be consumed. Meanwhile, to avoid the infant from stepping on the clutch, the accelerator pedal, the transmission, etc., the controller module 200 will lock the clutch, the accelerator pedal, the transmission, etc., and unlock the door only after the door is opened again.
In another embodiment, the method further comprises correcting the risk index according to the pressure transmitted by the pressure sensor and the sitting height of the infant, wherein the correction coefficient is as follows:
wherein h is the sitting height of the infant and is in cm; f is the unit N of the pressure generated when the infant is at rest. The risk index after correction is I' =η·i. And then, the controller module adopts a corresponding strategy according to the corrected risk index. Since the risk level of the infant depends on the age to some extent, the approximate age can be determined by sitting on the seat and the pressure generated on the seat, and on the basis of this, the risk index is corrected, so that the reliability of the determination can be further improved.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. A control method of a system for preventing the death of infants in a vehicle, characterized in that the system for preventing the death of infants in the vehicle comprises:
the in-vehicle personnel identification module is used for monitoring whether a person is in the vehicle or not in a parking state;
an in-vehicle environment monitoring module for monitoring oxygen concentration, carbon monoxide concentration and temperature in a vehicle;
the controller module is used for receiving the monitoring data of the in-vehicle personnel identification module and the in-vehicle environment monitoring module; judging whether a person is in the vehicle according to the monitoring data of the in-vehicle person identification module; judging the in-vehicle environment according to the monitoring data of the in-vehicle environment monitoring module, and adopting a corresponding processing strategy;
the automobile CAN bus module is connected with the controller module and used for sending a vehicle door, an engine signal, a wheel speed signal and a storage battery signal to the controller module;
the external communication module is internally provided with a GPRS transmitter and is connected with the controller to send emergency information to the outside in emergency;
the control method comprises the following steps:
step one: the automobile CAN bus module monitors information of the automobile door, the engine and the wheel speed and transmits the information to the controller module;
step two: the sensor module judges whether the automobile is in a parking state according to the wheel speed information monitored by the automobile bus module;
step three: if the automobile is in a parking state, the in-automobile personnel identification module is started and monitors whether a person is in the automobile;
step four: if someone is in the vehicle, an in-vehicle environment monitoring module is started and monitors the oxygen concentration, the carbon monoxide concentration and the temperature in the vehicle;
step five: the controller judges the danger index of the infant according to the environment condition in the vehicle and adopts a corresponding treatment strategy;
calculating the danger index of the infant according to the environmental conditions in the vehicle and the parking time;
wherein C is 0 C is the concentration of oxygen in the vehicle 1 The concentration of carbon monoxide in a car is in ppm, T is the temperature in the car, T is the residence time of an infant in the car, and h is the residence time of the infant in the car;
according to the pressure transmitted by the pressure sensor and the sitting height of the infant, the dangerous index is corrected, and the correction coefficient is as follows:
wherein h is the sitting height of the infant and is in cm; f is the pressure generated by the infant when the infant is at rest, and the unit is N;
when I is more than 0 and less than or equal to 0.5, the risk degree is lower; at this time, a warning is sent to the vehicle owner through the communication module;
when I is more than 0.5 and less than or equal to 1, the vehicle is in a dangerous state; at the moment, a warning is sent to the car owner through the communication module and the car lamp is flashed, so that the attention of passers-by is drawn;
when I > 1, in a very dangerous state; at this time, the lamp blinks, the vehicle is controlled to blast, and the window is opened.
2. The method for controlling a system for preventing a trapped death of an infant in a vehicle according to claim 1, wherein said in-vehicle human identification module comprises:
the thermal infrared human body sensor is arranged at the top of the vehicle;
a sound sensor mounted on the roof of the vehicle;
and the pressure sensor is arranged below the rear seat cushion of the automobile.
3. The method for controlling a system for preventing a trapped death of an infant in a vehicle according to claim 2, wherein said in-vehicle human identification module further comprises: the infrared measuring sensor is arranged at the roof of the automobile corresponding to the rear seat of the automobile and used for measuring the sitting height of an infant.
4. A method of controlling a system for preventing infant death from being trapped in a vehicle as claimed in claim 3, wherein said in-vehicle environment monitoring module comprises:
the carbon monoxide monitoring sensor is arranged at the air outlet of the air conditioner;
the temperature monitoring sensor is arranged on the roof and is positioned above the rear seat of the automobile;
and the oxygen concentration monitoring sensor is arranged on the roof and is positioned above the rear seat of the automobile.
5. The control method of the system for preventing infant from getting trapped and dying inside a vehicle according to claim 4, wherein when it is detected that the door is in a closed state, the engine is in a flameout state, and the wheel speed is less than 3km/h, the controller determines that the vehicle is in a stopped state.
6. The method for controlling a system for preventing a trapped death of an infant in a vehicle according to claim 5, further comprising: the automobile CAN bus module transmits the storage battery signal to the controller module,
when the electric quantity of the storage battery is detected to be about to be exhausted, the controller controls the engine to start, performs idle running,
and charging the storage battery.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810143781.8A CN108275071B (en) | 2018-02-12 | 2018-02-12 | System for preventing infant in car from being trapped and dead and control method |
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| CN201810143781.8A CN108275071B (en) | 2018-02-12 | 2018-02-12 | System for preventing infant in car from being trapped and dead and control method |
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| CN108275071A CN108275071A (en) | 2018-07-13 |
| CN108275071B true CN108275071B (en) | 2023-09-08 |
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| CN115973066A (en) * | 2023-01-14 | 2023-04-18 | 深圳市凯芙特科技有限公司 | In-vehicle safety control system and control method |
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