WO2023152936A1 - 置き去り警報装置、置き去り警報システム、および置き去り警報方法 - Google Patents

置き去り警報装置、置き去り警報システム、および置き去り警報方法 Download PDF

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Publication number
WO2023152936A1
WO2023152936A1 PCT/JP2022/005528 JP2022005528W WO2023152936A1 WO 2023152936 A1 WO2023152936 A1 WO 2023152936A1 JP 2022005528 W JP2022005528 W JP 2022005528W WO 2023152936 A1 WO2023152936 A1 WO 2023152936A1
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WIPO (PCT)
Prior art keywords
occupant
warning
alarm
abandoned
unit
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Ceased
Application number
PCT/JP2022/005528
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English (en)
French (fr)
Japanese (ja)
Inventor
篤拓 山田
匠 武井
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2023580013A priority Critical patent/JP7599589B2/ja
Priority to DE112022006642.3T priority patent/DE112022006642T5/de
Priority to US18/835,357 priority patent/US12570212B2/en
Priority to PCT/JP2022/005528 priority patent/WO2023152936A1/ja
Publication of WO2023152936A1 publication Critical patent/WO2023152936A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/04—Systems determining presence of a target
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/22—Status alarms responsive to presence or absence of persons

Definitions

  • This disclosure relates to abandoned alarm technology.
  • Patent Document 1 discloses information obtained from a plurality of sensors such as infrared and ultrasonic sensors that detect whether an infant is in the vehicle, a sensor that detects the crying of an infant, and a temperature sensor that measures the temperature inside the vehicle. Then, a system is described for determining whether or not there is an infant in the passenger compartment, and if so, whether or not the infant is in a dangerous condition, and if the infant is in a dangerous condition, issues an alarm.
  • sensors such as infrared and ultrasonic sensors that detect whether an infant is in the vehicle, a sensor that detects the crying of an infant, and a temperature sensor that measures the temperature inside the vehicle.
  • Patent Literature 1 determines whether or not the vehicle occupant needs an abandoned vehicle warning based on information acquired from a plurality of sensors, and determines whether or not an abandoned vehicle warning is necessary. There is a problem that it may be determined erroneously whether or not an abandoned vehicle warning is necessary. For example, an adult who does not require an alarm may be erroneously determined to be an infant. In this case, an unnecessary warning is output. Conversely, there are cases where an infant requiring an alarm is erroneously determined to be an adult. In this case, the necessary warning is not issued.
  • the present disclosure was made in response to the recognition of such problems, and aims to provide an abandoned vehicle warning technology that can suppress erroneous determination of an abandoned vehicle warning.
  • An abandoned alarm device controls transmission of a sensor that transmits electromagnetic waves indoors, and receives a received signal based on a reflected wave of the electromagnetic wave received by the sensor; Based on the received signal, the first method can be used to estimate whether the occupant detected in the cabin is the occupant requiring the warning, and determine that the occupant is the occupant requiring the warning.
  • an occupant attribute estimating unit that determines whether or not and outputs the result of the determination as a determination result
  • a replenishment determination unit that additionally determines whether or not the occupant is an occupant requiring an alarm using a method, and outputs the replenishment determination result as a replenishment determination result
  • an alarm necessity determination unit for determining whether or not an abandoned alarm is necessary, an alarm output control unit for controlling an external output device to issue a predetermined alarm when it is determined that the abandoned alarm is necessary; Prepare.
  • FIG. 1 is a block diagram showing a configuration example of an abandoned alarm device and an abandoned alarm system;
  • FIG. It is a figure which shows the structural example of the hardware of an abandoned alarm device. It is a figure which shows the structural example of the hardware of an abandoned alarm device. It is a flowchart which shows operation
  • FIG. 1 is a block diagram showing a configuration example of an abandoned alarm device 1 according to Embodiment 1 of the present disclosure.
  • the abandoned vehicle warning device 1 includes a transmitter/receiver 11, an occupant attribute estimation unit 12, a replenishment determination unit 13, a warning necessity determination unit 14, and a warning output control unit 15.
  • a sensor 2 is connected to the transmission/reception unit 11 .
  • the in-vehicle input device 3 and the in-vehicle output device 4 are connected to the replenishment determination unit 13 .
  • the external output device 5 is connected to the alarm output control unit 15 .
  • the abandoned vehicle warning device 1, sensor 2, in-vehicle input device 3, in-vehicle output device 4, and out-vehicle output device 5 constitute an abandoned vehicle warning system mounted on the vehicle A as a whole.
  • some or all of the occupant attribute estimation unit 12, the replenishment determination unit 13, the warning necessity determination unit 14, and the warning output control unit 15, which are components of the abandoned vehicle warning device 1, are installed outside the vehicle A.
  • a server device 6 located outside the vehicle A may implement the function of the abandoned object alarm device 1 .
  • the server device 6 receives an electromagnetic wave reception result of the transmission/reception unit 11 from an in-vehicle communication device (not shown) mounted on the vehicle A and an input result from the in-vehicle input device 3, and based on the received information to return the alarm output information to the in-vehicle communication device.
  • the in-vehicle communication device outputs the received alarm output information to the external output device 5 .
  • the abandoned object warning device 1 and the server device 6 constitute an abandoned object warning system in which the abandoned object warning device 1 is mounted on the vehicle A and the server device 6 is provided outside the vehicle A.
  • vehicle A examples include general passenger cars, commercial vehicles such as buses and taxis, and trains. Alternatively, rail vehicles such as locomotives are also included. Further, the technology according to the present disclosure can be used not only in the interior of a vehicle, but also in the interior of a mobile body such as an aircraft, or in the interior of a room in which a doorway can be opened and closed.
  • the transmitting/receiving unit 11 irradiates an electromagnetic wave into the vehicle interior via the sensor 2 and receives a reflected wave of the radiated electromagnetic wave. More specifically, the transmitting/receiving unit 11 outputs a control signal for transmitting electromagnetic waves to the sensor 2, the sensor 2 emits electromagnetic waves according to the control signal, and the sensor 2 receives the reflected waves of the emitted electromagnetic waves. As a result, a digital received signal (hereinafter simply referred to as a received signal) of the reflected wave is output, and the transmitting/receiving section 11 receives the output received signal.
  • a digital received signal hereinafter simply referred to as a received signal
  • the senor 2 may include multiple sensors, and multiple sensors may be installed at separate locations within the vehicle interior. For example, a sensor may be provided for each seat so that each sensor includes an occupant seated in one seat in its sensing target range.
  • the occupant attribute estimation unit 12 Based on the received signal, the occupant attribute estimation unit 12 estimates whether or not the occupant detected in the vehicle interior is an occupant requiring a warning using the first method. It is determined whether or not it can be determined that the occupant requires the occupant, and the result of the determination is output as the determination result.
  • the first method is a method that does not use user input such as physique detection, respiration rate estimation, and age estimation by face recognition, which will be exemplified below. Occupants are typically human beings present in the passenger compartment, but may also include non-human animals such as dogs or cats.
  • the space to be monitored is represented by a three-dimensional grid map consisting of a plurality of cells, and an occupancy grid map indicating whether or not there is an object to be detected is generated based on the received signal from the transmitting/receiving unit 11.
  • physique can be estimated by creating The three-dimensional grid map is stored in advance in a memory (not shown), and the occupant attribute estimation unit 12 accesses the memory to acquire the three-dimensional grid map and create an occupation grid map.
  • the respiration rate when detecting the respiration rate, far-infrared rays are emitted as electromagnetic waves to be emitted into the vehicle interior, and the respiration rate is detected from variations in luminance in a far-infrared image created based on the reflected waves. If the detected breathing rate is faster than a preset threshold, it is determined that the infant is an infant, ie, an occupant requiring a warning.
  • the breathing detection method there are other methods such as a method using millimeter-wave radar, which has cost advantages, a method of detecting minute movements obtained with a visible light camera, or a method using a pressure sensor installed on the seat. may be used.
  • an image of the inside of the vehicle is captured by a camera (not shown), and image processing is performed on the captured image to perform face recognition.
  • image processing is performed on the captured image to perform face recognition.
  • a reliability level representing the degree of reliability of the estimation result may be calculated.
  • confidence may be represented by binary information, such as high or low confidence.
  • the reliability may be expressed as a value within a predetermined range, eg, 1-100.
  • the reliability may be represented by a numerical value that increases without an upper limit as the degree of reliability increases.
  • the likelihood or probability of the estimation result may be used as the reliability.
  • the reliability calculation method for example, in the case of a method using respiration rate, if the fluctuation of the warning necessity determination result due to the respiration rate within a certain period of time is large, the reliability is low, and the determination result is stable. In some cases, the reliability may be increased. In addition, in the case of age estimation by face recognition, the reliability is high when the face is facing the front and sufficient information such as contours and parts used for age estimation can be obtained. Reliability may be lowered when face information is partially missing due to inclination, partial occlusion, or the like. In this case, it is also possible to directly replace the number of acquired parts with the reliability.
  • the reliability should be high when the trends in the estimation results of each method are the same, and the reliability should be low when they are different. For example, if there are methods A and B that judge whether or not an alarm is necessary in five stages from 1 to 5, method A will be judged as "1” and method B will be judged as "2", which has the same tendency as method A. In this case, the reliability is set to "4" by subtracting "1", which is the difference between the determination values of method A and method B, from "5", which is the number of stages.
  • Method B is determined to be "5", which is different from Method A
  • the reliability is "1", which is "5" minus "4", which is the difference between the determination values of Method A and Method B. ”.
  • the reliability may be made lower than when the tendency is the same.
  • the occupant attribute estimation unit 12 determines whether or not it can be determined that the occupant in the vehicle requires a warning, and if it can be determined, transmits a determination result indicating that it can be determined to the warning necessity determination unit 14. . Further, when it cannot be determined, the occupant attribute estimation unit 12 transmits a determination result indicating that it cannot be determined to the replenishment determination unit 13 .
  • the case where it cannot be determined that the occupant is an occupant requiring a warning is a case where there is a risk of an erroneous determination of whether or not a warning is necessary based only on the estimation results of the occupant attribute estimation unit 12, or there is a high possibility of an erroneous determination.
  • a plurality of situations such as the following (a) to (c) are conceivable.
  • the above (a) to (c) are examples, and the determination by the replenishment determination unit 13 may be performed in situations other than the above. Further, it may be determined whether or not the occupant can be confirmed as the occupant requiring a warning, for example, based on the estimation result of the occupant attribute and its reliability by combining the above situations. Further, whether or not the occupant can be determined to be an occupant requiring a warning is determined based on the above examples (a) to (c), based on the occupant attribute estimation result and whether or not the occupant is a occupant requiring a warning. A table that defines the relationship between whether or not the decision can be made may be prepared in advance, and the table may be used. Furthermore, a machine learning method may be used in which a plurality of attribute determination results and information on determination result determination results given manually to these attribute determination results are learned as learning data to determine determination determination.
  • the determination result output from the occupant attribute estimation unit 12 to the warning necessity determination unit 14 or the replenishment determination unit 13 includes the determination result indicating whether the determination can be made or not, as well as the presence or absence of the occupant and whether the occupant needs an alarm. It may include all or part of the estimation result obtained by estimating whether or not the passenger is a occupant, and the degree of reliability. Also, the determination result may include the number of passengers requiring warning and the number of passengers not requiring warning.
  • the replenishment determination unit 13 uses a second method different from the first method used by the occupant attribute estimating unit 12 to identify the occupant. is an occupant requiring an alarm, and the result of the replenishment determination is output to the warning necessity determination unit 14 as a replenishment determination result.
  • a second method is a method that can accept user input.
  • a second method involves the ability to ask questions and receive responses as described below.
  • the replenishment determination unit 13 controls the in-vehicle output device 4 connected to the replenishment determination unit 13 so as to ask questions to the occupants in the vehicle detected by the occupant attribute estimation unit 12, and connects to the replenishment determination unit 13. It is determined whether or not the occupant needs a warning based on the occupant's response to the question received through the in-vehicle input device 3 .
  • the case where the response of the occupant regarding the necessity of the warning is unknown. It also includes the case where it is necessary to warn, and the case where it is considered that there is no response from the occupants regarding the necessity of the warning.
  • the question asked through the in-vehicle output device 4 is, for example, voice output from the speaker, display on the display, or blinking of a preset button, but it may be asked by other methods. Also, a question may be asked by combining a plurality of output devices.
  • Responses by in-vehicle occupants through the in-vehicle input device 3 are performed, for example, by voice responses via a microphone, touch operations via a touch panel, gestures via a camera or an infrared sensor, and button operations via input buttons. However, methods other than these may be used. Alternatively, a plurality of input devices may be combined so that the abandoned object warning device 1 receives responses.
  • the question asked to the passenger in the car is a question that makes it possible to determine whether or not an abandonment warning is necessary based on the response content or reaction of the passenger to the question. Questions include, for example, direct questions asking whether or not an abandonment warning is required, such as "do you need a warning?" or questions asking the age of the occupant.
  • the replenishment determination unit 13 determines that the occupant is an occupant that does not require warning. .
  • the supplement determination unit 13 determines that the occupant is a occupant requiring a warning.
  • the replenishment determination result output from the replenishment determination unit 13 to the warning necessity determination unit 14 not only the binary information indicating whether or not the occupant needs a warning, but also a value indicating the degree of necessity of the warning may be output. good. Further, if the determination is difficult for some reason, such as sensor failure, the determination result of the occupant attribute estimation unit 12 may be output to the warning necessity determination unit 14 .
  • the replenishment determination unit 13 may change at least one of the question method and the response method to the in-vehicle occupant according to the position of the in-vehicle occupant estimated by the occupant attribute estimation unit 12 .
  • control may be performed such that questions are displayed and responses are displayed on the in-vehicle display closest to the occupant's position, or beams for speaker output and voice input are focused toward the occupant.
  • the occupant attribute estimation unit 12 can determine whether or not the occupant requires a warning, the determination by the replenishment determination unit 13 is not performed, and the warning necessity determination unit 14 is performed. As a result, for example, when it can be determined that the person is an adult who clearly does not require a warning, the question from the replenishment determining unit 13 and the response from the passenger are not required, thereby suppressing the annoyance of canceling the warning when the warning is unnecessary. be able to. Conversely, if the occupant attribute estimating unit 12 cannot determine whether or not the occupant requires a warning, that is, the estimation result of the occupant attribute estimating unit 12 alone may erroneously determine whether or not the warning is necessary.
  • the abandoned warning device 1 is configured to perform replenishment determination by the replenishment determining unit 13 when it cannot be determined that the occupant is an occupant requiring an alarm after the determination by the occupant attribute estimating unit 12. Therefore, it is possible to suppress the erroneous determination of the abandoned object alarm while suppressing the troublesomeness of canceling the alarm when the alarm is unnecessary.
  • the warning necessity determination unit 14 determines necessity of an abandoned vehicle warning based on the determination result of the occupant attribute estimation unit 12 or the replenishment determination result of the replenishment determination unit 13, and outputs the determination result to the warning output control unit 15. . If the occupant attribute estimating unit 12 can determine that the occupant in the vehicle requires a warning, the warning necessity determining unit 14 determines whether an abandonment warning is necessary based on the determination result of the occupant attribute estimating unit 12. do. If the occupant attribute estimating section 12 cannot confirm, based on the replenishment determination result of the replenishment determination section 13, it is determined whether or not an abandonment warning is required.
  • the warning necessity determination result may be represented not only by binary information such as the necessity of warning, but also by a value representing the degree of necessity of warning.
  • the degree of necessity of the abandoned alarm is, for example, "3" if the occupant is an infant and the temperature inside the vehicle is high or low, "2" if the occupant is an infant and the temperature inside the vehicle is appropriate, and the occupant is a child.
  • the temperature inside the vehicle is high or low, the value can be set as "2”, and when the occupant is a child and the temperature inside the vehicle is appropriate, the value can be set as "1".
  • the degree of necessity of the abandoned vehicle warning may be determined as "2” if the occupant is an infant, and "1" if the occupant is a child.
  • the degree of necessity of the abandoned vehicle alarm is determined based on the vehicle interior temperature, the abandoned vehicle alarm device 1 is connected to a temperature sensor (not shown) for measuring the temperature in the vehicle interior.
  • the warning necessity determination result may include information about the situation inside the vehicle or the occupants acquired by the occupant attribute estimation unit 12 or the replenishment determination unit 13 .
  • the alarm output control unit 15 controls the external output device 5 capable of issuing an alarm to the outside of the vehicle when the alarm necessity determination unit 14 determines that an abandoned alarm is necessary. Output an alarm. Warning output methods include flashing of hazard lamps and blowing of a horn, but other methods may be used. In addition, vehicle control such as window opening or unlocking may be performed, and there are occupants who are left behind in the vehicle to the portable information terminal of a person outside the vehicle such as a parent or driver via a communication line such as the Internet. You can inform us about it.
  • the warning may be output at multiple levels according to the determination result of the warning necessity determination unit 14, and the warning output method may be changed according to the level. For example, when it is determined that an infant is left behind and an alarm is definitely necessary, it is conceivable to increase the volume of the alarm to the outside of the vehicle.
  • the warning method and level may be determined by using a table prepared in advance that defines the relationship between the warning necessity determination result and the warning method and level. Further, the information obtained by the occupant attribute estimation unit 12 or the replenishment determination unit 13 may be notified outside the vehicle.
  • the abandoned alarm device 1 is implemented by a computer having a processor 101 and a memory 102, as shown in FIG. 2A.
  • the memory 102 stores programs for causing the computer to function as the transmission/reception unit 11, the passenger attribute estimation unit 12, the replenishment determination unit 13, the warning necessity determination unit 14, and the warning output control unit 15.
  • the programs stored in the memory 102 are read out and executed by the processor 101, thereby realizing the functions of the transmission/reception unit 11, the occupant attribute estimation unit 12, the supplement determination unit 13, the warning necessity determination unit 14, and the warning output control unit 15. be done.
  • the processor 101 uses, for example, a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a microprocessor, a microcontroller, or a DSP (Digital Signal Processor).
  • a CPU Central Processing Unit
  • GPU Graphics Processing Unit
  • microprocessor a microcontroller
  • DSP Digital Signal Processor
  • the memory 102 includes, for example, RAM (Random Access Memory), ROM (Read Only Memory), flash memory, semiconductor memory such as EPROM (Erasable Programmable Read Only Memory) or EEPROM (Electrically Erasable Programmable Read-Only Memory), magnetic disk, It uses an optical disk or a magneto-optical disk.
  • RAM Random Access Memory
  • ROM Read Only Memory
  • flash memory semiconductor memory such as EPROM (Erasable Programmable Read Only Memory) or EEPROM (Electrically Erasable Programmable Read-Only Memory), magnetic disk, It uses an optical disk or a magneto-optical disk.
  • the abandoned object warning device 1 may be realized by a dedicated processing circuit 103, as shown in FIG. 2B.
  • the processing circuit 103 is, for example, an ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), FPGA (Field-Programmable Gate Array), SoC (System-on-a-Chip), or system LSI (Large-Scale Integration). etc. is used.
  • the abandoned object warning device 1 may be implemented using the processor 101 , memory 102 and processing circuitry 103 . That is, some functions of the transmitting/receiving unit 11, the occupant attribute estimation unit 12, the replenishment determination unit 13, the warning necessity determination unit 14, and the warning output control unit 15 are realized by the processor 101 and the memory 102, and the remainder function may be implemented by the processing circuit 103 .
  • the server device 6 can also be configured as shown in FIG. 2A or 2B.
  • step ST1 the transmitting/receiving unit 11 irradiates an electromagnetic wave into the vehicle interior via the sensor 2, and receives a reflected wave of the radiated electromagnetic wave.
  • step ST2 the occupant attribute estimating unit 12 determines whether or not there is an occupant in the vehicle based on the received signal of the reflected wave received by the transmitting/receiving unit 11. It is estimated whether or not the occupant
  • step ST3 if the occupant attribute estimating unit 12 cannot determine whether or not the occupant in the vehicle requires an alarm, that is, if there is a risk of an erroneous determination in the occupant attribute estimating unit 12, , the process proceeds to the process in the replenishment determining section 13 in step ST4. If it can be determined whether or not the occupant in the vehicle requires a warning, the process skips step ST4 and proceeds to step ST5.
  • step ST4 the replenishment determination unit 13 receives a question from the abandoned vehicle warning device 1 and a response from the occupant using the input/output devices (in-vehicle input device 3, in-vehicle output device 4), and the occupant attribute estimation unit 12 Based on the estimation result of (1), it is additionally determined whether or not the passenger in the vehicle needs to be warned.
  • step ST5 based on the determination result of the occupant attribute estimation unit 12 or the replenishment determination result of the replenishment determination unit 13, the warning necessity determination unit 14 determines whether an abandonment warning is necessary. If the determination result of whether or not an abandoned alarm is necessary indicates that an alarm is necessary (YES in step ST6), the process proceeds to step ST7, and the alarm output control section 15 issues an abandoned alarm to the output device 5 outside the vehicle. Output a control signal to output.
  • step ST6 Even if it is determined in step ST6 that the warning is unnecessary, the process may return to step ST1 or ST5 again to determine whether or not the occupant requires a warning a plurality of times. Further, the condition for multiple determinations may be a case where there is a high possibility that the replenishment determination unit 13 has made an error in determining whether or not the occupant requires an alarm. For example, even though the occupant attribute estimation unit 12 has determined that the infant requires a warning, the replenishment determination unit 13 may obtain a response indicating that the warning is unnecessary.
  • the abandoned object warning device 1 may additionally have a function of acquiring the environment inside the vehicle. For example, by additionally connecting a temperature sensor for measuring the temperature in the vehicle interior to the abandoned vehicle warning device 1, the abandoned vehicle warning device 1 can acquire the degree of danger within the vehicle. As a result, even if the warning necessity determination unit 14 determines that the warning is not necessary, if the temperature in the vehicle interior is high and it is determined that it is in a dangerous state, the warning is output or the replenishment determination unit 13 replenishment determination unit 13. Additional processing such as determining whether or not the passenger is a required occupant may be performed. This makes it possible to protect the safety of passengers inside the vehicle.
  • the timing of questioning the passenger in step ST4 may be changed according to the in-vehicle environment.
  • the inquiry from the replenishment determination unit 13 may be made at the timing when the vehicle interior becomes hot and the abandoned vehicle alarm device 1 determines that it is dangerous.
  • electromagnetic waves may be transmitted and received periodically, and the question may be asked at the timing when the determination result of the occupant attribute estimation unit 12 inside the vehicle changes due to some change in the situation inside the vehicle.
  • Timing at which the determination result of the occupant attribute estimating unit 12 changes may be when an occupant enters the vehicle from outside the vehicle, or when the occupant's posture changes. As a result, it is possible to issue an abandoned vehicle alarm that flexibly responds to changes in vehicle interior conditions.
  • the timing or the number of questions asked by the replenishment determination unit 13 to the crew in step ST4 may be changed.
  • Regulations for abandoned alarms vary by country or region. Therefore, by obtaining information on the laws and regulations of the region from the location information of the vehicle A, and controlling the timing and number of questions to comply with the regulations of the obtained laws and regulations, even multiple countries or regions with different laws and regulations can be used. It is possible to correspond.
  • An abandoned alarm device (1) of Supplementary Note 1 includes a transmitter/receiver (11) that controls transmission of a sensor that transmits electromagnetic waves indoors and that receives a received signal based on a reflected wave of the electromagnetic waves received by the sensor; Based on the received signal, a first method is used to estimate whether the occupant detected in the cabin is the occupant requiring the warning, and the occupant is the occupant requiring the warning.
  • an occupant attribute estimating unit (12) that determines whether or not it can be determined and outputs the result of determination as a determination result; a replenishment determination unit (13) for supplementally determining whether or not the occupant is an occupant requiring an alarm using a second method different from the method, and outputting the replenishment determination result as a replenishment determination result; A warning necessity determination unit (14) for determining whether or not an abandoned warning is required based on the determination result or the replenishment determination result; and an alarm output control unit (15) that issues a predetermined alarm.
  • the abandoned alarm device of Supplementary Note 2 is the abandoned alarm device described in Supplementary Note 1, wherein the replenishment determination unit controls the in-vehicle output device (4) to ask the occupant a question, and responds to the question. Based on the response from the occupant, it is additionally determined whether the occupant is an occupant requiring an alert.
  • the abandoned alarm device of Supplementary Note 3 is the abandoned alarm device described in Supplementary Note 2, wherein the response is a voice response via a microphone, a touch operation via a touch panel, a gesture via a camera or an infrared sensor, and an input. At least one of button operations via buttons.
  • the abandoned warning device of appendix 4 is the abandoned warning device described in any one of appendices 1 to 3, wherein the occupant attribute estimation unit calculates a reliability of the estimation result, and calculates the reliability of the estimation result. and at least one of the reliability, it is determined whether or not the occupant can be determined to be an occupant requiring a warning.
  • the abandoned alarm device of Supplementary Note 5 is the abandoned alarm device described in any one of Supplements 1 to 4, wherein the warning necessity determination unit issues an abandoned warning based on the determination result or the replenishment determination result.
  • the degree of necessity is further determined, and the warning output control section changes the level of the warning to be issued by controlling the external output device based on the determined degree of necessity.
  • the abandoned alarm device of appendix 6 is the abandoned alarm device described in appendix 2, wherein at least one of a method of questioning the passenger and a method of response from the passenger is changed according to the position of the passenger. .
  • the abandoned warning device of Supplementary Note 7 is the abandoned warning device described in Supplementary Note 2, wherein the timing of questioning the occupant according to at least one of the environment inside the vehicle and the location where the vehicle is located. Or change the number of questions.
  • the abandoned alarm device of appendix 8 is the abandoned alarm device described in any one of appendices 1 to 7, wherein the first method is a method that does not use user input, and the second method is a method that does not use user input. It is a method that can accept input.
  • the abandoned alarm system of Supplementary Note 9 uses the first method based on a received signal obtained through a sensor that transmits electromagnetic waves into a room and receives reflected waves to warn an occupant detected in the room.
  • the abandoned alarm method of Supplementary Note 10 is an abandoned vehicle equipped with a transmission/reception unit (11), an occupant attribute estimation unit (12), a replenishment determination unit (13), a warning necessity determination unit (14), and a warning output control unit (15).
  • An abandoned alarm method performed by an alarm device, wherein the transmitting/receiving unit (11) controls transmission of a sensor that transmits electromagnetic waves indoors, and receives a reception signal based on the reflected wave of the electromagnetic waves received by the sensor. and the occupant attribute estimating unit (12) determines whether or not the occupant detected in the cabin using the first method is an occupant requiring an alarm, based on the received signal.
  • the abandoned vehicle warning device 1 of the present disclosure can be used as a warning device that is mounted on a vehicle and that determines whether or not an occupant left behind in the vehicle requires a warning and controls the warning.

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  • Engineering & Computer Science (AREA)
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PCT/JP2022/005528 2022-02-14 2022-02-14 置き去り警報装置、置き去り警報システム、および置き去り警報方法 Ceased WO2023152936A1 (ja)

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