CN110660191A - Detection alarm method and device for preventing biological asphyxia left in vehicle - Google Patents
Detection alarm method and device for preventing biological asphyxia left in vehicle Download PDFInfo
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- CN110660191A CN110660191A CN201910801220.7A CN201910801220A CN110660191A CN 110660191 A CN110660191 A CN 110660191A CN 201910801220 A CN201910801220 A CN 201910801220A CN 110660191 A CN110660191 A CN 110660191A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/028—Communication between parent and child units via remote transmission means, e.g. satellite network
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
- G08B29/188—Data fusion; cooperative systems, e.g. voting among different detectors
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Abstract
The invention provides a detection alarm method and a device for preventing a left organism in a vehicle from suffocating, wherein the method comprises the following steps: s1, determining that the power supply of the target vehicle is in a power-off state, and detecting the concentration of CO2 in the vehicle when the opening and closing states of all doors are not changed within one minute after the power supply is powered off; s2, judging real-time concentration change of CO2 in the vehicle within a first preset time after the power supply is powered off for one minute; s3, if the concentration of CO2 in the vehicle is in an ascending trend, and the ascending concentration difference value reaches a first threshold value, generating first preliminary discrimination information, and judging that the vehicle is suspected to have the left animals; s4, starting an infrared recognition device to scan a heat source in the vehicle; s5, when it is confirmed that a mobile heat source meeting a certain size standard exists in the vehicle, the existence of the remaining creatures in the vehicle is confirmed, and alarm prompt information is generated; and S6, when the generation time of the alarm prompt information exceeds a second preset time, the power-on state of the power supply is recovered, and meanwhile, the air conditioner in the vehicle is started to perform ventilation.
Description
Technical Field
The invention relates to the field of automobile detection, in particular to a method and a device for detecting and alarming to prevent a left-behind organism in an automobile from suffocating.
Background
In recent years, automobile safety accidents frequently occur, the life rhythm of people is busy and nervous, the living environment with complicated and nervous affairs and accidental negligence often occur, and the tragic accidents that children, old people and pets are trapped in the automobile often occur. For example, in school buses, students stay in the vehicles almost every year due to greediness of the students or sleeping and carelessness of drivers and passengers.
Therefore, more and more vehicle enterprises also put forward life monitoring alarm systems, which are intended to alarm or remotely operate to open an air conditioner or lower a vehicle window when organisms in a vehicle are found to be left. For example, patent application No. CN205103990U provides a car alarm system for preventing children from suffocating, which starts infrared detection after the car stops to determine whether people are left in the car, and then determines whether the environment is suitable through an environment detection system, thereby starting a safety alarm system. However, such patents have the following problems: 1. the cost for starting the infrared detection device all the time is too high, which is not beneficial to energy saving and environmental protection, and simultaneously the infrared detection device is easy to damage. 2. If the automobile only stops for a short time, false alarm is easy to occur, and great inconvenience is caused to a driver and traffic management personnel.
The existing life monitoring and alarming systems which only use the acoustic wave detector and the carbon dioxide sensor also have the problems of serious false alarm and poor detection effect.
Therefore, a detection alarm method and device for preventing the left-behind organisms in the vehicle from suffocating with high detection efficiency, no harm to the detection object, energy conservation, accurate detection result and less false alarm conditions becomes necessary.
Disclosure of Invention
In order to effectively solve the technical problems, the invention provides a detection alarm method and a detection alarm method for preventing the biological asphyxia left in a vehicle, which can effectively solve the problems.
The method of the invention comprises the following steps: s1, determining that the power supply in the target vehicle is in a power-off state, and each vehicle is powered off within one minute after the power supply is powered offWhen the open/close state of the door is not changed, the detection of CO in the vehicle is started2Concentration; s2, start to judge CO in vehicle2Changing the real-time concentration within a first preset time after the power supply is powered off for one minute; s3, if CO is in the vehicle2The concentration is in an ascending trend within first preset time, and if the ascending concentration difference value reaches a first threshold value, first preliminary discrimination information is generated, and the suspected existence of the left animals in the vehicle is judged; s4, after the first preliminary judgment information is determined to be generated, an infrared recognition device is started to scan a heat source in the vehicle; s5, when it is confirmed that a mobile heat source meeting a certain size standard exists in the vehicle, the existence of the remaining creatures in the vehicle is confirmed, and alarm prompt information is generated; and S6, when the generation time of the alarm prompt information exceeds a second preset time, the power-on state of the power supply is recovered, and meanwhile, the air conditioner in the vehicle is started to perform ventilation.
Further, in step S2: detecting CO in a vehicle2During the concentration period, if the open/close state of any door changes, the measurement of CO in the vehicle is stopped2And (4) concentration.
Further, the alarm prompt information comprises field prompt information and remote prompt information, the field prompt information is field voice alarm information sent by a vehicle horn, and the remote prompt information is alarm information received by a mobile client of a driver.
Further, in step S6: when the air conditioner in the vehicle carries out air exchange work for more than second preset time, CO in the vehicle2If the concentration is not reduced below a first safety value, determining the ventilation fault of the vehicle, and sending emergency alarm information and automobile position information to a traffic management platform, wherein the first safety value is smaller than the external CO2The concentration size.
Further, if the CO is in the vehicle2Stopping the control of the CO in the vehicle when the concentration change does not meet the standard for generating the first preliminary judgment information or when the fact that a moving heat source meeting a certain size standard does not exist in the vehicle is confirmed2The concentration of (4) is detected.
The invention also provides a detection alarm device for preventing the biological asphyxia left in the vehicle for realizing the method, which comprises the following steps:a door state sensing unit for sensing the open/close state of each door; CO22A concentration detection unit for measuring CO inside the vehicle2Concentration; a first processing unit for controlling the opening and closing of the CO2 concentration detection unit according to the opening and closing state of the vehicle door and the power on-off state of the power supply, and simultaneously can control the CO in the vehicle2Processing the real-time concentration change data; a first judgment unit for detecting CO in the vehicle2Judging the change condition of the concentration in a first preset time to further generate first preliminary judgment information; the infrared identification unit is used for identifying a human body heat source or an animal in the vehicle; the second judgment unit is used for judging whether the left animals exist in the vehicle according to the detection result of the infrared identification unit; the alarm information generating unit is used for generating alarm prompt information; and the second processing unit is used for controlling the power-on state of the power supply and the working state of the air conditioner according to the condition of the living things left in the vehicle.
Furthermore, the alarm information generating unit comprises a field reminding unit and a remote communication unit, and the field reminding unit can control a loudspeaker of the automobile to broadcast field voice alarm information; the remote communication unit can send remote reminding information to the mobile client of the driver and can also send emergency alarm information and automobile position information to the traffic management platform.
Further, the infrared identification unit adopts an FLIR-C2 portable thermal imager.
Further, the first processing unit and the second processing unit both adopt ARM Cortex-A processors.
The invention passes CO2The detection of the left-behind organisms in the vehicle is realized by the concentration detection and thermal imaging detection technology, the detection accuracy is ensured, and the occurrence of false alarm is reduced; the invention can help the field personnel in time through the field reminding information and remind the vehicle outworkers and the traffic managers in time through the remote reminding information, thereby effectively preventing the condition that the organisms left in the vehicle are asphyxiated. When the vehicle goes out or nearby people do not provide help, the air conditioner is started in time to ventilate, so that the safety of the living things left in the vehicle is ensured. The invention can realizeThe detection devices are opened and closed in time, so that energy can be effectively saved.
Therefore, a detection alarm method and device for preventing the left-behind organisms in the vehicle from suffocating with high detection efficiency, no harm to the detection object, energy conservation, accurate detection result and less false alarm conditions becomes necessary.
Drawings
FIG. 1 is a flow chart of a detection alarm method for preventing asphyxia in a vehicle according to the present invention;
fig. 2 is a schematic structural diagram of a detection alarm device for preventing the biological asphyxia left in the vehicle.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention and/or the technical solutions in the prior art, the following description will explain specific embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
The invention mainly takes various passenger vehicles as the active objects, and also comprises public vehicles such as school buses and public buses. The embodiment provides a detection alarm method for preventing the biological asphyxia left in a vehicle.
As shown in fig. 1, the method mainly includes the following steps:
s1, determining that the power supply in the target vehicle is in a power-off state, and starting to detect the CO in the vehicle when the opening and closing states of the doors are not changed within one minute after the power supply is powered off2And (4) concentration.
The door closing state is used as a judgment mark, and all doors are simultaneously used as judgment bases due to different vehicle doors in different numbers. When the door state switch is damaged, the actual car door is closed, and the network signal is still in a door opening state, so that the biological monitoring does not work, and detection errors are easily caused. Since the door is open and the outdoor concentration, outdoor CO is detected2The concentration is not suddenly changed, so that the contact is avoidedThe subsequent steps can not cause energy waste.
S2, start to judge CO in vehicle2And after the power supply is powered off for one minute, the real-time concentration changes within a first preset time. Wherein, the first preset time is set for facilitating the control of CO in the vehicle2Quantitative analysis and statistics of the change of (A) and prevention of CO2The influence of concentration fluctuation on short-term judgment is that the first preset time can be set to 5 minutes, but is not easy to overlong, otherwise, larger potential safety hazard can be caused.
Detecting CO in a vehicle2During the concentration period, if the open/close state of any door changes, the measurement of CO in the vehicle is stopped2And (4) concentration. For example, a person returns to take an article in the middle of the process to open the door, thereby causing the circulation of internal gas. At this time, when the door changes state again, step S1 may be re-executed.
S3, if CO is in the vehicle2The concentration is in a rising trend within first preset time, and the rising concentration difference value reaches a first threshold value, first preliminary discrimination information is generated, and the suspected existence of the left animal in the vehicle is judged
The animal can breathe to generate CO2The concentration is increased, so when organisms are left in the vehicle, CO is generated2The concentration will tend to rise within a first predetermined time, and the vehicle will generally produce some CO due to the operation of the engine2Gas, so will sometimes be CO2The concentration increases, but the difference in concentration that generally increases over a first predetermined time is less than a first threshold. The first threshold value can be set according to the size and the model of the automobile.
And S4, after the first preliminary judgment information is determined to be generated, starting an infrared recognition device to scan a heat source in the vehicle.
And S5, when the movable heat source meeting a certain size standard exists in the vehicle, confirming that the abandoned creatures exist in the vehicle, and generating alarm prompt information.
Wherein, the infrared recognition device is used for improving the detection accuracy, and CO generated by plants under weak illumination2More, sometimes resulting in CO in the vehicle2The concentration change rule is consistent with the respiration of animals,therefore, use of CO alone2The concentration for distinguishing the living things left in the vehicle is easy to cause errors, especially when the plants are carried at night. The alarm prompt information comprises field prompt information and remote prompt information, the field prompt information is field voice alarm information sent by a vehicle horn, and the remote prompt information is alarm information received by a mobile client of a driver.
Additionally, if the CO is in the vehicle2Stopping the control of the CO in the vehicle when the concentration change does not meet the standard for generating the first preliminary judgment information or when the fact that a moving heat source meeting a certain size standard does not exist in the vehicle is confirmed2Thereby being convenient for saving electric energy.
And S6, when the generation time of the alarm prompt information exceeds a second preset time, the power-on state of the power supply is recovered, and meanwhile, the air conditioner in the vehicle is started to perform ventilation.
In step S6, when the air conditioner in the vehicle performs the ventilation operation for more than a second preset time, the CO in the vehicle2If the concentration is not reduced below a first safety value, determining the ventilation fault of the vehicle, and sending emergency alarm information and automobile position information to a traffic management platform, wherein the first safety value is smaller than the external CO2The concentration is high, so that the life safety of people in the vehicle can be effectively protected.
As shown in figure 2, in order to realize the method, the invention also provides a detection alarm device for preventing the left-behind biological asphyxia in the vehicle.
The method comprises the following steps: a door state sensing unit for sensing the open/close state of each door; CO22A concentration detection unit for measuring CO inside the vehicle2Concentration; a first processing unit for controlling the opening and closing of the CO2 concentration detection unit according to the opening and closing state of the vehicle door and the power on-off state of the power supply, and simultaneously can control the CO in the vehicle2Processing the real-time concentration change data; a first judgment unit for detecting CO in the vehicle2Judging the change condition of the concentration in a first preset time to further generate first preliminary judgment information; the infrared identification unit is used for identifying a human body heat source or an animal in the vehicle; a second judging unit for judging according toJudging whether a left animal exists in the vehicle according to the detection result of the infrared identification unit; the alarm information generating unit is used for generating alarm prompt information; and the second processing unit is used for controlling the power-on state of the power supply and the working state of the air conditioner according to the condition of the living things left in the vehicle.
The alarm information generating unit comprises a field reminding unit and a remote communication unit, wherein the field reminding unit can control a loudspeaker of an automobile to broadcast field voice alarm information; the remote communication unit can send remote reminding information to the mobile client of the driver and can also send emergency alarm information and automobile position information to the traffic management platform.
The first processing unit and the second processing unit both adopt ARM Cortex-A processors. The high-efficiency data processing capacity of the ARM Cortex-A processor greatly improves the execution efficiency of the device.
The FLIR-C2 is a pocket thermal imager which has complete functions and light structure and is specially used in the wide building field and the electrical/mechanical field. The user can carry about, can discover hidden hot spot, energy loss, structural defects, pipe blockage, HVAC trouble and other problems through the thermal image at any time. The FLIR-C2 is more economical and practical than other thermal imagers in the past, and has stronger infrared thermal imaging function. Therefore, in the invention, the first processing unit and the second processing unit both adopt ARM Cortex-A processors.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. A detection alarm method for preventing the biological asphyxia left in a vehicle is characterized by comprising the following steps: s1, determining that the power supply in the target vehicle is in a power-off state, and starting to detect the concentration of CO2 in the vehicle when the opening and closing states of all doors are not changed within one minute after the power supply is powered off; s2, judging real-time concentration change of the CO2 in the vehicle within a first preset time after the power supply is powered off for one minute; s3, if the concentration of CO2 in the vehicle is in an ascending trend within a first preset time, and the ascending concentration difference value reaches a first threshold value, generating first preliminary judgment information, and judging that the vehicle is suspected to have the left-over animal; s4, after the first preliminary judgment information is determined to be generated, an infrared recognition device is started to scan a heat source in the vehicle; s5, when it is confirmed that a mobile heat source meeting a certain size standard exists in the vehicle, the existence of the remaining creatures in the vehicle is confirmed, and alarm prompt information is generated; and S6, when the generation time of the alarm prompt information exceeds a second preset time, the power-on state of the power supply is recovered, and meanwhile, the air conditioner in the vehicle is started to perform ventilation.
2. The detecting and alarming method for preventing the bio-asphyxia left in the vehicle as set forth in claim 1, wherein in step S2: during the detection of the in-vehicle CO2 concentration, if a change in the open-close state of either of the doors occurs, the measurement of the in-vehicle CO2 concentration is stopped.
3. The method as claimed in claim 1, wherein the alarm prompt message includes a live prompt message and a remote prompt message, the live prompt message is a live voice alarm message sent by a vehicle speaker, and the remote prompt message is an alarm message received by a mobile client of a driver.
4. The detecting and alarming method for preventing the bio-asphyxia left in the vehicle as claimed in claim 1, wherein in step S6: when the air conditioner in the vehicle carries out air exchange work for more than second preset time, CO in the vehicle2If the concentration is not reduced below a first safety value, determining the ventilation fault of the vehicle, and sending emergency alarm information and automobile position information to a traffic management platform, wherein the first safety value is smaller than the external CO2The concentration size.
5. As claimed inClaim 1 discloses a detection alarm method for preventing the biological asphyxia left in the vehicle, which is characterized in that if the CO in the vehicle is detected2Stopping the control of the CO in the vehicle when the concentration change does not meet the standard for generating the first preliminary judgment information or when the fact that a moving heat source meeting a certain size standard does not exist in the vehicle is confirmed2The concentration of (4) is detected.
6. A detection alarm device for preventing a left-behind organism in a vehicle from suffocating is characterized by comprising: a door state sensing unit for sensing the open/close state of each door; CO22A concentration detection unit for measuring CO inside the vehicle2Concentration; a first processing unit for controlling the opening and closing of the CO2 concentration detection unit according to the opening and closing state of the vehicle door and the power on-off state of the power supply, and simultaneously can control the CO in the vehicle2Processing the real-time concentration change data; a first judgment unit for detecting CO in the vehicle2Judging the change condition of the concentration in a first preset time to further generate first preliminary judgment information; the infrared identification unit is used for identifying a human body heat source or an animal in the vehicle; the second judgment unit is used for judging whether the left animals exist in the vehicle according to the detection result of the infrared identification unit; the alarm information generating unit is used for generating alarm prompt information; and the second processing unit is used for controlling the power-on state of the power supply and the working state of the air conditioner according to the condition of the living things left in the vehicle.
7. A detection alarm device for preventing bio-asphyxia left in a vehicle according to claim 6, wherein the alarm information generating unit comprises a field reminding unit and a remote communication unit, the field reminding unit can control a loudspeaker of the vehicle to broadcast field voice alarm information; the remote communication unit can send remote reminding information to the mobile client of the driver and can also send emergency alarm information and automobile position information to the traffic management platform.
8. A detection alarm device for preventing bio-asphyxia left in a vehicle according to claim 6, wherein said infrared recognition unit is a FLIR-C2 thermal portable imager.
9. The car interior bio-asphyxia detection alarm device as claimed in claim 6, wherein the first and second processing units are ARM Cortex-a processors.
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| CN201910801220.7A CN110660191A (en) | 2019-08-28 | 2019-08-28 | Detection alarm method and device for preventing biological asphyxia left in vehicle |
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Application publication date: 20200107 |