CN111678848A - Method and device for detecting and locating cigarette smoke in the passenger compartment of a vehicle - Google Patents

Method and device for detecting and locating cigarette smoke in the passenger compartment of a vehicle Download PDF

Info

Publication number
CN111678848A
CN111678848A CN202010154284.5A CN202010154284A CN111678848A CN 111678848 A CN111678848 A CN 111678848A CN 202010154284 A CN202010154284 A CN 202010154284A CN 111678848 A CN111678848 A CN 111678848A
Authority
CN
China
Prior art keywords
cigarette smoke
sensor
vehicle
source
passenger compartment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010154284.5A
Other languages
Chinese (zh)
Inventor
阿比纳夫·达克
沃尔克·舍尔
乌彭德拉·J·帕特尔
克莱·韦斯利·曼德维尔
劳伦斯·C·卡拉斯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Publication of CN111678848A publication Critical patent/CN111678848A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00792—Arrangement of detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/008—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being air quality
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/004—CO or CO2
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
    • G01N33/0067—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display by measuring the rate of variation of the concentration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to a method for identifying and locating cigarette smoke in the passenger compartment of a vehicle, comprising the following steps: i) providing a first sensor configured to detect particulate matter in cigarette smoke and a second sensor configured to detect carbon monoxide, ii) detecting sensor signals at the first sensor and at the second sensor, and iii) identifying the source of cigarette smoke based on the signal strengths of the first and second sensors.

Description

Method and device for detecting and locating cigarette smoke in the passenger compartment of a vehicle
Technical Field
The invention relates to a method and a device for detecting and locating cigarette smoke in the passenger compartment of a vehicle, in particular a motor vehicle.
Background
In order to determine the air quality in the passenger compartment of a vehicle, in particular a motor vehicle, a large number of different sensors are used. Based on the information thus obtained, different tasks and functions can be controlled and implemented.
A major source of significant reduction in air quality in the vehicle interior is cigarette smoke. With the methods and systems known in the prior art, it has not previously been possible to locate the source of cigarette smoke, i.e. whether it is located outside (outside) or inside (inside) the passenger compartment of the vehicle.
Disclosure of Invention
It is therefore an object of the present invention to provide an improved method and an improved device compared to the prior art, in particular to provide a method and a device which allow identification and localization of cigarette smoke in the passenger compartment of a vehicle.
This object is achieved by a method having the features of claim 1 and by an apparatus having the features of claim 7.
Advantageous embodiments and variants of the invention emerge from the dependent claims and the following description. The features listed individually in the claims can therefore be combined with one another and with the features described in detail in the following description in any technically meaningful way and represent further advantageous design variants of the invention.
According to the invention, a method for identifying and locating cigarette smoke in a passenger compartment of a vehicle first comprises the step of deploying a first sensor and a second sensor. The first sensor is designed to detect particulate matter in cigarette smoke and the second sensor is designed to detect carbon monoxide. In a further subsequent step, sensor signals at the first sensor and at the second sensor are detected, and then the source of the cigarette smoke is identified based on the signal strength.
The detection of the sensor signal can be carried out periodically or preferably continuously in specified time intervals.
The method is designed in such a way that the concentration of the particulate matter at the first sensor is first determined. If the concentration corresponds to, for example, 0.5mg/m3Is increased by a preset value, the carbon monoxide concentration measured at the second sensor is measured, otherwise the test sequence of the method is stopped and restarted. The second sensor may preferably be in an economical stand-by state until it is activated. More preferably, however, a continuous monitoring of the sensor signal at the second sensor is provided.
According to a particularly preferred design variant, if, for example, 5mg/m is detected at the second sensor3The increased concentration of carbon monoxide, a ratio of the signal intensities of the first and second sensors is formed, and the source of the cigarette smoke is identified based on the resulting ratio.
If the resulting ratio value is within a predetermined range, for example within a range of 5 to 70, it is particularly preferably provided that the state of the windows and/or doors of the vehicle is checked and the source of the cigarette smoke is identified on the basis of the state. If it is detected that at least one window and/or at least one door is opened, the test sequence is stopped and restarted.
On the other hand, if no window and/or no door opening is detected, it is particularly preferably provided that the operating mode of the vehicle ventilation system, in particular of the HVAC (heating ventilation air conditioning) or air conditioning system, is checked and the source of the cigarette smoke is identified on the basis of the operating mode. In this query step it is checked in particular whether the ventilation system is operated in a fresh air mode or in an air recirculation mode. If an air recirculation mode is detected, the cigarette smoke has an internal source, i.e., the identified cigarette smoke originates from a person smoking inside the passenger compartment of the vehicle.
On the other hand, if a fresh air pattern is detected, a signal pattern is preferably registered based on the sensor signals of the identified first and/or second sensor, and the source of the cigarette smoke is identified based on the signal pattern. The signal pattern may for example be derived from the rate of increase and/or decrease of the sensor signal and the frequency of the sensor signal over one or more specific time intervals.
If a properly specified signal pattern is detected, the cigarette smoke has an internal source, which means that appropriate countermeasures can be taken. Otherwise, the cigarette smoke has an external source and is therefore a source outside the passenger compartment of the vehicle. The test sequence is then stopped and restarted.
According to a further aspect, the invention also relates to a device for identifying and locating cigarette smoke in the passenger compartment of a vehicle, in particular a motor vehicle, having a first sensor designed for detecting particulate matter in cigarette smoke and a second sensor designed for detecting carbon monoxide and a system for implementing the method according to the invention.
Hereinafter, the present invention is described in more detail based on exemplary embodiments and the accompanying drawings. The exemplary embodiments are to be considered as illustrative and not restrictive, and the intention is to enable one skilled in the art to practice the invention. It should be noted that the technical features mentioned in the exemplary embodiments (in particular technical means) can be used individually and in combination with each other by a person skilled in the art to extend the object according to the invention.
Drawings
Shown is that:
FIG. 1 is a design variation of a flow chart of a method for identifying and locating cigarette smoke in a passenger compartment of a vehicle according to the present invention;
FIG. 2 is a first exemplary illustration of a signal pattern for an internal source of cigarette smoke;
FIG. 3 is a second exemplary illustration of a signal pattern for an internal source of cigarette smoke; and
figure 4 is an example illustration of a signal pattern of an external source of cigarette smoke.
Detailed Description
Fig. 1 shows a first design variant of the flow chart 1 of the method according to the invention, which can be carried out, for example, by a specially configured control unit (not shown). Suitable control units for vehicles, in particular motor vehicles, are known to the person skilled in the art and will not be discussed further below.
According to the design variant shown in fig. 1, in the operating phase of the vehicle, the sensor signal detected at the first sensor is first monitored. The monitoring of the sensor signal can be carried out periodically or preferably continuously at predetermined time intervals. In this case, the first sensor is designed to detect particulate matter in the cigarette smoke. Suitable sensors are known to the person skilled in the art from the prior art. On detection of, for example, 0.5mg/m3The next inquiry step is performed according to the flow chart 1 shown in fig. 1, otherwise the test sequence is stopped and restarted.
In the present case, the second sensor is designed for detecting carbon monoxide. The method can be implemented in such a way that the monitoring of the sensor signal at the second sensor is activated only when a specific limit value is exceeded at the first sensor. Thus, for example, the second sensor may be in an economic standby state until it is activated. However, it is preferably provided that the sensor signal at the second sensor is continuously monitored. Upon detection of, for example, 5mg/m3Is detected, the next step is performed in which a ratio of the concentrations detected at the first and second sensors is formed. If the resulting ratio value falls within a predetermined range, for example from 5 to 70, the next query step is carried out according to the flow chart 1 shown in fig. 1, otherwise the test sequence is stopped and restarted.
In the following query step according to the design variant shown in fig. 1, the state of the windows and/or doors of the vehicle is then tested. If it is detected that at least one window and/or at least one door is opened, the test sequence is stopped and restarted.
On the other hand, if it is detected that no window and/or no door is opened, the vehicle passenger compartment is substantially isolated from the external environment, and in a further subsequent query step, the operating mode of the vehicle ventilation system, in particular of the HVAC (heating ventilation air conditioning) or air conditioning system, is checked and the source of the cigarette smoke is identified on the basis of the operating mode. In this query step it is checked in particular whether the ventilation system is operated in a fresh air mode or in an air recirculation mode. If an air recirculation mode is detected, the cigarette smoke has an internal source, i.e., the identified cigarette smoke originates from a person smoking inside the passenger compartment of the vehicle.
On the other hand, if a fresh air pattern is detected, a signal pattern is additionally generated based on the sensor signals of the identified first and/or second sensor, and the source of the cigarette smoke is identified based on the signal pattern. The signal pattern may for example be derived from the rate of increase and/or decrease of the sensor signal and the frequency of the sensor signal over one or more specific time intervals.
If a properly specified signal pattern is detected, the cigarette smoke has an internal source, which means that appropriate countermeasures can be taken. Otherwise, the cigarette smoke has an external source and is therefore a source outside the passenger compartment of the vehicle. The test sequence is then stopped and restarted.
In fig. 2 to 4, exemplary profiles of signal patterns of an internal source (fig. 2 and 3) and an external source (fig. 4) are shown.
Fig. 2 and 3 each show a schematic representation of sensor signals recorded during smoking of a cigarette in the passenger compartment of a vehicle. This is shown as a curve and is marked with the reference numeral 2. The first mathematical derivative of curve 2 is also shown and is labelled with reference numeral 3.
A horizontal line 4 is shown above the zero level, which horizontal line 4 represents the upper limit value. If the value of the first derivative exceeds this limit value (overshoot), i.e. a rapid rise is measured, this is interpreted as an indication of an internal source. Below the zero level, a further horizontal line 5 is shown, which horizontal line 5 defines the lower limit value. If the value of the first derivative does not reach a lower limit value (undershoot), i.e. a rapid decrease is measured, this is also interpreted as an indication of an internal source. Any overshoot or undershoot of the predetermined limit value can therefore be recorded as a mark 6.
In contrast to fig. 2, in fig. 3, the frequency of overshoots or undershoots of the specified limit value is recorded. If a certain frequency of increase and/or decrease is exceeded within a certain time window of 30 seconds, this will also be interpreted as an internal source.
According to particularly preferred design variants, combinations that decrease sharply over time can be used as a strong indication of internal origin. Further, for example, the frequency of increase and/or decrease within another specified time window of 180 seconds may be used to assume that an internal source persists and/or to determine the end of the internal source.
In fig. 4, a graph is shown for comparison, which shows the recorded sensor signal during smoking outside the passenger compartment of the vehicle. The scale of the axis is the same as that shown in figures 2 and 3. A significantly slower rise or fall is observed due to the mixing of the cigarette smoke with the ambient air. In the case of internal sources with the same signal swing, the limit value is exceeded or not reached, whereas this is not the case for external sources.
List of reference numerals
1 flow sheet
2 curves of recorded sensor signals
First order reciprocal of 3 curves
4 horizon (upper limit)
5 horizon (lower limit)
6 labelling

Claims (7)

1. Method for identifying and locating cigarette smoke in the passenger compartment of a vehicle, in particular a motor vehicle, having the following steps:
i) providing a first sensor configured to detect particulate matter in cigarette smoke and a second sensor configured to detect carbon monoxide,
ii) detecting sensor signals at the first sensor and at the second sensor, an
iii) identifying the source of the cigarette smoke based on the signal strengths of the first and second sensors.
2. The method of claim 1, wherein a ratio is formed from the detected signal strengths of the first and second sensors, and the source of the cigarette smoke is identified based on the resulting ratio.
3. A method according to claim 1 or claim 2, wherein the status of a window and/or door of the vehicle is checked and the source of the cigarette smoke is identified based on the status.
4. Method according to claim 3, characterized in that the operating mode of a vehicle ventilation system, in particular a heating, ventilation or air conditioning system, is then checked and the source of the cigarette smoke is identified on the basis of the operating mode.
5. A method according to any one of the preceding claims, wherein a signal pattern is additionally generated based on the identified sensor signals of the first and/or second sensors, and the source of the cigarette smoke is identified based on the signal pattern.
6. The method of claim 5, wherein a first mathematical derivative is formed from the identified sensor signals.
7. A device for identifying and locating cigarette smoke in the passenger compartment of a vehicle, in particular a motor vehicle, said device having:
-a first sensor for detecting particulate matter in cigarette smoke and a second sensor for detecting carbon monoxide, an
-a system for implementing the method according to any one of the preceding claims 1 to 6.
CN202010154284.5A 2019-03-11 2020-03-07 Method and device for detecting and locating cigarette smoke in the passenger compartment of a vehicle Pending CN111678848A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019203276.1 2019-03-11
DE102019203276.1A DE102019203276A1 (en) 2019-03-11 2019-03-11 Method for identifying and locating cigarette smoke in a vehicle interior of a vehicle and apparatus

Publications (1)

Publication Number Publication Date
CN111678848A true CN111678848A (en) 2020-09-18

Family

ID=72241101

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010154284.5A Pending CN111678848A (en) 2019-03-11 2020-03-07 Method and device for detecting and locating cigarette smoke in the passenger compartment of a vehicle

Country Status (2)

Country Link
CN (1) CN111678848A (en)
DE (1) DE102019203276A1 (en)

Also Published As

Publication number Publication date
DE102019203276A1 (en) 2020-09-17

Similar Documents

Publication Publication Date Title
US6983642B2 (en) System and method for automatically judging the sealing effectiveness of a sealed compartment
US11731486B2 (en) System for monitoring and/or controlling the air quality in a vehicle
CN107532987B (en) Device for estimating the mass concentration of fine particles contained in the air of a housing
ATE385220T1 (en) METHOD AND DEVICE FOR DETECTING A MOTOR VEHICLE TRAILER FOR ADAPTIVE DRIVING SPEED CONTROLS IN STOP AND GO TRAFFIC
WO2003035437A1 (en) Monitor system, central monitor apparatus, on-vehicle monitor apparatus, monitor method, monitor program, computer-readable recording medium containing the same
US10596876B2 (en) Method for adjusting fine particulate measurement values
GB2558074A (en) Vehicle sound activation
CN105730329B (en) Vehicle air conditioning warning processing unit, alarming device and alarming method for power
US10696143B2 (en) Apparatus of improving vehicle indoor air quality by using air dust concentration data corrected from the outside of vehicle and purifying vehicle indoor air
CN113910861B (en) Vehicle air circulation control method and device based on information fusion
KR20160137411A (en) Method for monitoring a motor vehicle
CN105277501B (en) Gas sensing structure for measuring concentration of target gas
CN115234122A (en) Closed-loop control method, system, equipment and storage medium for automatic door of unmanned bus
CN111678848A (en) Method and device for detecting and locating cigarette smoke in the passenger compartment of a vehicle
CN103879288A (en) Method for operating motor car
US20080284559A1 (en) Device for Controlling an Air Conducting Element in a Motor Vehicle
CN110886566A (en) Vehicle window control method, device and equipment
CN110727258A (en) Vehicle controller configuration method and device, vehicle-mounted equipment and storage medium
AU2003231680A1 (en) Process to detect the motion of a vehicle
CN109733281A (en) A kind of safety vehicle system and method
CN115027401A (en) Safety risk monitoring method and system for stationary vehicle passengers
WO2017168940A1 (en) Data integration and analysis system
KR20180018199A (en) system and method to prevent the recurrence of accidents in inside-vehicle
CN104175832A (en) Vehicle cab air control system, vehicle cab air control method and vehicle
CN108798355A (en) Control system for automotive window

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination