Device for detecting abnormality in cabin

Abstract

To detect an abnormal condition in a cabin of a vehicle before it leads to an abnormal event while reducing electric power consumption.SOLUTION: An abnormality detection device comprises: a sensor signal processing unit 110 that receives sensor signals from a pressure sensor group that is arrayed in a planar manner in a lower side region of a seat seating face of a vehicle, and in a floor carpet upper side region or lower side region near the footing of a crew member; a comparison unit 120 that compares the sensor signal level with a predetermined threshold value; a determination unit 130 that is activated under the condition that a comparison result indicating that the sensor signal level exceeds the predetermined threshold value is input from the comparison unit when a driving system of the vehicle is stopped, and determines at least whether a key is present in a cabin; and an abnormality detection unit 140 that is activated at the same timing as the determination unit 130, and detects an abnormality in the cabin when the key is not present in the cabin based on the determination result of the determination unit 130.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vehicle interior abnormality detection device. [Background technology]

[0002] Recently, car break-ins and thefts, in which third parties break into parked vehicles by lock picking or other methods and steal valuables, have become a social problem. Furthermore, abandonment of young children, especially during the hot summer months, in vehicles, which can lead to serious injuries, has also become a social problem.

[0003] Regarding theft prevention as described above, a device has been disclosed which has an alarm control means for controlling the acoustic output of an alarm sound, and an alarm cancellation means for canceling the acoustic output of the alarm sound in response to a predetermined operation, wherein the alarm control means has a first alarm control means for acoustically outputting a first alarm sound into the vehicle cabin when a first timing signal is detected, and a second alarm control means for acoustically outputting a second alarm sound outside the vehicle cabin when a second timing signal is detected during the acoustic output of the first alarm sound into the vehicle cabin (see, for example, Patent Document 1).

[0004] Furthermore, with regard to the above-mentioned abandonment, a device has been disclosed that includes an abandonment detection unit that detects whether a person has been left in the vehicle cabin based on a sensor signal obtained by a sensor for detecting people present in the vehicle cabin, and a control content determination unit that, when abandonment is detected, determines the content of control corresponding to the abandonment based on the vehicle position acquired by a vehicle position acquisition unit (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-291833 [Patent Document 2] Japanese Patent Publication No. 2020-004242 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the technology described in Patent Document 1 outputs an alarm sound inside and outside the vehicle, but this alarm sound is only output when the mode switch is operated to switch to monitoring mode.Therefore, there was a problem that in order to make the device function against possible break-ins or thefts when the vehicle is parked with the ignition off, the power consumption would increase, making it unrealistic. Furthermore, the technology described in Patent Document 1 detects unauthorized entry by a third party into the vehicle cabin when the room lamp is turned on, the ignition switch is turned on, or a vehicle speed pulse is detected. However, by the time the ignition switch is turned on or the vehicle speed pulse is detected, the vehicle has already been seized by a third party, so this technology does not prevent unauthorized acts by a third party.

[0007] In addition, the technology described in Patent Document 2 determines the control to be applied to the vehicle in response to the person being left behind depending on the vehicle's position when it detects that a person has been left behind in the passenger compartment.However, there was a problem in that making the device function in response to possible abandonment when the vehicle is stopped with the ignition turned off would increase power consumption, making it unrealistic. Furthermore, the technology described in Patent Document 2 functions when it is detected that a person has been left in the vehicle compartment, but it does not predict the person being left behind and prevent it from happening.

[0008] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide an interior abnormality detection device that detects abnormal conditions inside the vehicle cabin before the vehicle reaches an abnormal event while reducing power consumption. [Means for solving the problem]

[0009] Form 1: One or more embodiments of the present invention propose a vehicle interior abnormality detection device comprising: a sensor signal processing unit that inputs sensor signals from an array of pressure sensors; a comparison unit that compares the sensor signal level input by the sensor signal processing unit with a predetermined threshold; a judgment unit that is activated when the comparison unit inputs a comparison result indicating that the sensor signal level exceeds the predetermined threshold while the vehicle's drive system is stopped, and judges whether or not a key is present in the vehicle interior; and an abnormality detection unit that is activated when the comparison unit inputs a comparison result indicating that the sensor signal level exceeds the predetermined threshold while the vehicle's drive system is stopped, and detects an abnormality in the vehicle interior when the judgment unit judges that there is no key present in the vehicle interior.

[0010] Form 2: One or more embodiments of the present invention propose an interior abnormality detection device comprising a pressure sensor and a controller, wherein the controller includes one or more processors and one or more memories communicatively connected to the one or more processors, wherein the one or more processors input sensor signals from a group of pressure sensors arranged in a planar manner, compare the input sensor signal level with a predetermined threshold, and when the comparison result indicates that the sensor signal level exceeds the predetermined threshold while the vehicle's drive system is stopped, start the vehicle's drive system, determine whether or not there is at least a key in the vehicle cabin, and detect an abnormality in the vehicle cabin if the determination result indicates that there is no key in the vehicle cabin. [Effects of the Invention]

[0011] According to one or more embodiments of the present invention, it is possible to detect an abnormal state in the vehicle cabin before the vehicle reaches an abnormal event while suppressing power consumption. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a diagram showing the configuration of a vehicle interior abnormality detection device according to a first embodiment of the present invention. [Figure 2] 1 is a diagram illustrating an example of an arrangement state of pressure sensors in a vehicle interior abnormality detection device according to a first embodiment of the present invention. [Figure 3] 1 is a process flow diagram of a vehicle interior abnormality detection device according to a first embodiment of the present invention. [Figure 4] FIG. 4 is a diagram showing the configuration of a vehicle interior abnormality detection device according to a second embodiment of the present invention. [Figure 5] FIG. 6 is a process flow diagram of a vehicle interior abnormality detection device according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a process flow diagram of a vehicle interior abnormality detection device according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

[0014] First Embodiment A vehicle interior abnormality detection device 1 according to this embodiment will be described with reference to FIGS. 1 to 3. FIG.

[0015] <Configuration of vehicle interior abnormality detection device 1> As shown in FIG. 1, the vehicle interior abnormality detection device 1 according to this embodiment includes a control unit 100 as a controller, and a notification unit 200.

[0016] The control unit 100 controls the overall operation of the vehicle interior abnormality detection device 1 in accordance with a control program stored in a ROM (Read Only Memory) or the like (not shown). In this embodiment, for example, the control unit 110 controls the processing of the sensor signal processor 110, the comparison processing of the comparator 120, the determination processing of the determiner 130, and the abnormality detection processing of the abnormality detector 140, which will be described later.

[0017] When the notification unit 200 acquires a detection result indicating that an abnormality has been detected inside the vehicle compartment, it notifies the abnormal state inside and outside the vehicle compartment. The notification method may be an audio notification method, or an audio notification method that includes lighting control to stimulate the visual sense.

[0018] As shown in FIG. 1, the control unit 100 includes a sensor signal processing unit 110, a comparison unit 120, a determination unit 130, and an abnormality detection unit 140.

[0019] The sensor signal processing unit 110 uses as input sensor signals from a group of pressure sensors arranged in a planar form in the area below the seat cushion of the vehicle and in the area above or below the floor carpet near the feet of the occupant. Specifically, as shown in Figure 2, which illustrates the passenger seat 10 and floor carpet 12, the pressure sensor 300 is arranged in a planar manner in the lower region of the seat surface 11 of the seat 10 and in the upper or lower region of the floor carpet 12 near the feet of the occupant. The sensor signal processing unit 110 uses the sensor signals of a pressure sensor group consisting of a plurality of pressure sensors 300 as input. Although FIG. 2 illustrates the passenger seat 10 as an example, pressure sensors 300 are also provided in the driver's seat, rear seats, and floor carpet 12 near the feet of the driver and rear seat passengers. Furthermore, each pressure sensor 300 is associated with an individual port of the sensor signal processing unit 110 on a one-to-one basis. That is, the sensor signal processing unit 110 can identify which pressure sensor 300 has responded by recognizing which port the sensor signal has been input to. The sensor signal processing unit 110 transmits the sensor signals of the pressure sensors as data associated with each pressure sensor 300 to the comparison unit 120, which will be described later, via a bus line CB for CAN (Controller Area Network) communication.

[0020] The comparison unit 120 compares the signal level of the acquired sensor signal with a predetermined threshold value. Here, the predetermined threshold value is used to exclude the weight of a child car seat or junior car seat when the child car seat or junior car seat is installed on the seat, for example. This threshold can also be set by the occupant, for example, to 5 kg, 10 kg, 15 kg, etc., based on the specific weight of the child or junior seat. The comparison unit 120 transmits the comparison result to the determination unit 130 and the abnormality detection unit 140, which will be described later, via the bus line CB of the CAN communication.

[0021] The determination unit 130 is activated when a comparison result indicating that the signal level exceeds a predetermined threshold is obtained while the drive train of the vehicle is stopped. After starting up, the determination unit 130 determines whether or not there is at least a key inside the vehicle. That is, the determination unit 130 is activated by the wake-up function of the CAN communication when the signal level exceeds a predetermined threshold. Furthermore, the determination unit 130 determines whether or not a key is present in the vehicle compartment based on information from an ECU (Electronic Control Unit) or the like, for example. The determination unit 130 may acquire image data from an imaging device that captures images of the interior of the vehicle and determine whether or not a key is present in the vehicle based on the acquired image data, or may have a short-range wireless function that enables communication with a smart key and determine whether or not a key is present in the vehicle through this communication. The determination unit 130 transmits the determination result to the abnormality detection unit 140, which will be described later, via the bus line CB of the CAN communication.

[0022] The abnormality detection unit 140 is activated when a comparison result indicating that the signal level exceeds a predetermined threshold is obtained while the vehicle drivetrain is stopped. After activation, the abnormality detection unit detects an abnormality in the vehicle interior when a determination result indicating that the key is not present in the vehicle interior is obtained. That is, the abnormality detection unit 140 is activated by the wake-up function of CAN communication when the signal level exceeds a predetermined threshold. Then, when the sensor signal level from the pressure sensor 300 exceeds the predetermined threshold and the key is not present in the vehicle, the abnormality detection unit 140 detects an abnormality in the vehicle interior. The abnormality detection unit 140 transmits the detection result to the notification unit 200, which will be described later, via the bus line CB of the CAN communication.

[0023] <Processing by vehicle interior abnormality detection device 1> The processing of the vehicle interior abnormality detection device 1 according to this embodiment will be described with reference to FIG.

[0024] As shown in FIG. 3, the control unit 100 determines whether the accessory power supply (ACC) is in the ON state based on the information obtained from the ECU (step S111). Then, when the control unit 100 determines that the accessory power supply (ACC) is in the ON state ("YES" in step S111), the control unit 100 transitions to the standby mode.

[0025] On the other hand, if the control unit 100 determines that the accessory power supply (ACC) is ON ("YES" in step S111), it validates the sensor signal acquired by the sensor signal processing unit 110 from the pressure sensor 300 (step S112).

[0026] The comparison unit 120 acquires the sensor signal via the bus line CB of the CAN communication, compares the signal level of the acquired sensor signal with a predetermined threshold, and determines whether the signal level is greater than the predetermined threshold (step S113). If the comparison section 120 determines that the signal level is smaller than the predetermined threshold value ("NO" in step S113), the comparison section 120 transitions to a standby mode.

[0027] On the other hand, if the comparison unit 120 determines that the signal level is greater than the predetermined threshold value ("YES" in step S113), it outputs a signal including a comparison result indicating that the signal level is greater than the predetermined threshold value to the judgment unit 130 and the abnormality detection unit 140 via the CAN communication bus line CB. This causes the determination unit 130 and the abnormality detection unit 140 to start up (wake up) (step S114).

[0028] When the determination unit 130 receives a signal including a comparison result indicating that the signal level exceeds a predetermined threshold, the determination unit 130 determines whether or not the key is present in the vehicle interior (step S115). Then, when the determination unit 130 determines that the key is present inside the vehicle ("YES" in step S115), the mode shifts to standby mode.

[0029] On the other hand, if the judgment unit 130 determines that there is no key inside the vehicle ("NO" in step S115), it outputs a signal including the judgment result that there is no key inside the vehicle to the abnormality detection unit 140 via the CAN communication bus line CB.

[0030] When the abnormality detection unit 140 receives a signal including a determination result that the key is not present in the vehicle interior, the abnormality detection unit 140 detects an abnormality in the vehicle interior (step S116). Then, the abnormality detection unit 140 outputs a signal including a detection result indicating that an abnormality has been detected to the notification unit 200 via the bus line CB of the CAN communication.

[0031] When the notification unit 200 receives a signal including a detection result indicating that an abnormality has been detected, the notification unit 200 issues an alarm (step S117).

[0032] The control unit 100 determines whether the accessory power supply (ACC) is in the ON state based on the information obtained from the ECU (step S118). If the control unit 100 determines that the accessory power supply (ACC) is in the OFF state ("NO" in step S118), it causes the notification unit 200 to continue issuing the alarm.

[0033] On the other hand, if the control unit 100 determines that the accessory power supply (ACC) is in the ON state ("YES" in step S118), it causes the notification unit 200 to stop issuing an alarm, and ends the process.

[0034] <Actions and Effects> As described above, the sensor signal processing unit 110 of the vehicle interior abnormality detection device 1 according to this embodiment receives input of sensor signals from the group of pressure sensors 300 arranged in a planar fashion. In other words, a group of pressure sensors consisting of multiple pressure sensors 300 is arranged in a planar manner, for example, in the lower area of ​​the seating surface 11 of the vehicle seat 10 and in the upper or lower area of ​​the floor carpet 12 near the feet of the occupant. Therefore, it is possible to accurately grasp whether a heavy object is placed on the seat surface 11 of the vehicle seat 10. In addition, since the pressure sensor group consisting of multiple pressure sensors 300 is also arranged, for example, on the floor carpet 12 near the feet of the occupant, it is possible to determine whether or not the occupant is sitting on the seat surface 11 of the vehicle seat 10, except in cases where the occupant is in an abnormal sitting position, such as sitting upright on the seat surface 11 of the seat 10 or raising and holding their legs. Furthermore, since each pressure sensor 300 is associated one-to-one with an individual port of the sensor signal processing unit 110, by analyzing the presence or absence of a sensor signal, it is possible to accurately determine which pressure sensor 300 is being pressurized. In addition, the determination unit 130 and the abnormality detection unit 140 of the vehicle interior abnormality detection device 1 according to this embodiment are activated by the wake-up function of CAN communication when the sensor signal level from the comparison unit 120 exceeds a predetermined threshold. Therefore, it is possible to detect an abnormal state inside the vehicle cabin before an abnormal event occurs while suppressing power consumption. Furthermore, the comparison unit 120 of the vehicle interior abnormality detection device 1 according to this embodiment compares the level of the sensor signal input by the sensor signal processing unit 110 with a predetermined threshold value. The predetermined threshold value is set to exclude the weight of a child car seat or junior car seat when the child car seat or junior car seat is installed on the seat. Therefore, it is possible to accurately determine whether or not there is a child in a child seat or junior seat. Furthermore, regardless of whether the seat is a child seat or a junior seat, it is possible to accurately determine whether the heavy object on the seat surface 11 of the seat 10 is an occupant or not. Furthermore, the abnormality detection unit 140 of the vehicle interior abnormality detection device 1 according to this embodiment detects an abnormality in the vehicle interior when the determination result of the determination unit 130 indicates that the key is not present in the vehicle interior. In other words, if the key is not inside the vehicle, the vehicle doors will be locked and someone will be inside the vehicle. Therefore, if the person is a passenger, there is a high possibility that the vehicle has been abandoned, and if the person is a third party other than a passenger, there is a high possibility that the vehicle has been broken into, so such abnormal conditions can be accurately detected.

[0035] The comparison unit 120, the determination unit 130, and the abnormality detection unit 140 of the vehicle interior abnormality detection device 1 according to this embodiment are connected via CAN communication. Therefore, a node in the sleep state of the CAN protocol can use the function of waking up when a dominant bus signal is input from the bus. In other words, the comparison unit 120 can wake up the sleep state determination unit 130 and the abnormality detection unit 140 by inputting a dominant bus signal to the bus indicating that the sensor signal level exceeds a predetermined threshold. This reduces power consumption when the ACC is off.

[0036] Furthermore, when an abnormal state is detected, the notification unit 200 of the vehicle interior abnormality detection device 1 according to this embodiment notifies the abnormal state inside and outside the vehicle. Therefore, by reporting an abnormal state, it is expected that the abnormal state will be resolved quickly.

[0037] <Second embodiment> A vehicle interior abnormality detection device 1A according to this embodiment will be described with reference to FIGS.

[0038] <Configuration of vehicle interior abnormality detection device 1A> As shown in FIG. 4, the vehicle interior abnormality detection device 1A of this embodiment is configured to include a sensor signal processing unit 110, a comparison unit 120, a judgment unit 130A, an abnormality detection unit 140A, an alarm unit 200, and a control unit 100A.

[0039] The determination unit 130A determines whether the key is present in the vehicle interior and also determines whether the vehicle doors are locked or unlocked. Specifically, the determination unit 130A determines whether or not the key is present in the vehicle compartment based on information from the ECU or the like via the control unit 100A, for example. Furthermore, the determination unit 130A determines whether the vehicle door key is locked or unlocked based on information from the ECU via the control unit 100A, for example. The determination result of the determination unit 130A is transmitted to the abnormality detection unit 140, which will be described later, via the bus line CB of the CAN communication.

[0040] When the determination result of the determination unit 130A indicates that the vehicle door key is locked and the key is not inside the vehicle, the abnormality detection unit 140A detects that an occupant has been left behind inside the vehicle. Furthermore, when the determination result of the determination unit 130A indicates that the vehicle door key is in an unlocked state and the key is not inside the vehicle, the abnormality detection unit 140A detects that a third party has broken into the vehicle interior. The determination result of the abnormality detection unit 140A is transmitted to the notification unit 200, which will be described later, via the bus line CB of the CAN communication.

[0041] <Processing of vehicle interior abnormality detection device 1A> The processing of the vehicle interior abnormality detection device 1A according to this embodiment will be described with reference to FIGS.

[0042] As shown in FIG. 5, the control unit 100A determines whether the accessory power supply (ACC) is in the ON state based on the information obtained from the ECU (step S111). If the control unit 100A determines that the accessory power supply (ACC) is in the ON state ("YES" in step S111), the control unit 100A transitions to the standby mode.

[0043] On the other hand, if the control unit 100A determines that the accessory power supply (ACC) is ON ("YES" in step S111), the sensor signal processing unit 110 validates the sensor signal input from the pressure sensor 300 (step S112).

[0044] The comparison unit 120 inputs the sensor signal from the sensor signal processing unit 110 via the CAN communication bus line CB, compares the sensor signal level with a predetermined threshold, and determines whether the sensor signal level is greater than the predetermined threshold (step S113). If the comparison unit 120 determines that the sensor signal level is smaller than the predetermined threshold value ("NO" in step S113), the comparison unit 120 transitions to a standby mode.

[0045] On the other hand, when the comparison unit 120 determines that the sensor signal level is greater than the predetermined threshold value ("YES" in step S113), it outputs a signal to that effect to the determination unit 130 via the bus line CB of the CAN communication. This causes the determination unit 130A and the abnormality detection unit 140A to start up (wake up) (step S114).

[0046] As shown in FIG. 6, the determining unit 130A determines whether the doors of the vehicle are locked or unlocked (step S211). If the determination unit 130A determines that the vehicle doors are locked ("closed" in step S211), it determines whether or not there is a key inside the vehicle (step S211).

[0047] In step S212, if the determination unit 130A determines that the key is present inside the vehicle ("YES" in step S212), the mode shifts to standby mode. On the other hand, if the determination unit 130 determines that the key is not present in the vehicle interior ("NO" in step S121), it outputs a message to that effect to the abnormality detection unit 140A via the bus line CB of the CAN communication.

[0048] At this time, the abnormality detection unit 140A detects that an incident has occurred in which an occupant has been left behind in the vehicle compartment (step S116). Then, the abnormality detection unit 140A outputs information indicating that an abnormality has been detected to the notification unit 200 via the bus line CB of the CAN communication.

[0049] When the annunciation unit 200 receives the abnormality detection information from the abnormality detection unit 140A via the bus line CB of the CAN communication, it issues an alarm (step S117).

[0050] The control unit 100 determines whether the accessory power supply (ACC) is in the ON state based on the information obtained from the ECU (step S118). If the control unit 100 determines that the accessory power supply (ACC) is in the OFF state ("NO" in step S118), it causes the notification unit 200 to continue issuing the alarm.

[0051] On the other hand, if the control unit 100 determines that the accessory power supply (ACC) is in the ON state ("YES" in step S118), it causes the notification unit 200 to stop issuing an alarm, and ends the process.

[0052] Also, in step S211, if the judgment unit 130A determines that the vehicle door is unlocked ("Open" in step S211), it determines whether or not the smart key has been operated based on information from the ECU via the control unit 100 (step S213). If the determination unit 130A determines that the smart key has been operated ("YES" in step S213), the process returns to step S111.

[0053] On the other hand, if the determination unit 130A determines that the smart key has not been operated ("NO" in step S213), it determines whether or not the key is present in the vehicle interior (step S214). Then, when the determining unit 130A determines that the key is present inside the vehicle ("YES" in step S214), the mode shifts to the standby mode.

[0054] On the other hand, if the determination unit 130A determines that the key is not present in the vehicle interior ("NO" in step S214), it outputs a message to that effect to the abnormality detection unit 140A.

[0055] At this time, the abnormality detection unit 140A detects that an incident has occurred in which a third party has entered the vehicle interior (step S116). Then, the abnormality detection unit 140A outputs information indicating that an abnormality has been detected to the notification unit 200 via the bus line CB of the CAN communication.

[0056] When the annunciation unit 200 receives the abnormality detection information from the abnormality detection unit 140A, it issues an alarm (step S117).

[0057] The control unit 100 determines whether the accessory power supply (ACC) is ON or not based on the information obtained from the ECU (step S118). If the control unit 100 determines that the accessory power supply (ACC) is OFF ("NO" in step S118), it causes the notification unit 200 to continue issuing the alarm.

[0058] On the other hand, if the control unit 100 determines that the accessory power supply (ACC) is in the ON state ("YES" in step S118), it causes the notification unit 200 to stop issuing an alarm, and ends the process.

[0059] <Actions and Effects> As described above, the abnormality detection unit 140A of the vehicle interior abnormality detection device 1A of this embodiment detects that an occupant has been left behind when the vehicle door key is locked and there is no key inside the vehicle interior based on the judgment result of the judgment unit 130A. In other words, if the vehicle door key is locked, there is no key inside the vehicle, and there are occupants inside the vehicle, it is considered that the occupants, including the driver, have left the vehicle with the door key locked, even though there are occupants inside the vehicle. Therefore, if the vehicle door key is locked, there is no key inside the vehicle, and there are occupants inside the vehicle, the vehicle interior abnormality detection device 1A can quickly alert the occupants, including the driver, that an incident has occurred in which an occupant has been left behind inside the vehicle. Therefore, it is possible to quickly detect an abnormal state inside the vehicle cabin before the vehicle reaches an abnormal event while suppressing power consumption.

[0060] In addition, the abnormality detection unit 140A of the vehicle interior abnormality detection device 1A of this embodiment detects the intrusion of a third party into the vehicle interior when the vehicle door key is in an unlocked state and the key is not inside the vehicle interior based on the judgment result of the judgment unit 130A. In other words, if the vehicle door key is unlocked, there is no key inside the vehicle, and there is an occupant inside the vehicle, it is considered that the vehicle door key has been unlocked by lock picking or other means, and a third party has entered the vehicle interior. Therefore, when the vehicle door key is unlocked, there is no key inside the vehicle, and there are occupants inside the vehicle, the occupants, including the driver, can be quickly notified by the vehicle interior abnormality detection device 1A that a third party has entered the vehicle interior, even though there are occupants inside the vehicle. Therefore, it is possible to quickly detect an abnormal state inside the vehicle cabin before the vehicle reaches an abnormal event while suppressing power consumption.

[0061] <Variation 1> In the first and second embodiments, the vehicle interior abnormality detection device 1 and the vehicle interior abnormality detection device 1A are basically activated when a predetermined condition is satisfied. However, for example, in cases where the driver wants to run a short errand without waking up a sleeping infant, or when driving at night and the driver wants to rest outside without waking up a sleeping passenger, a function may be provided that allows the driver or other person to stop operation of the interior abnormality detection device 1 and the interior abnormality detection device 1A at their discretion.

[0062] <Variation 2> In the first and second embodiments, basically, when predetermined conditions are satisfied, the vehicle interior abnormality detection device 1 and the vehicle interior abnormality detection device 1A are exemplified as determining an abnormal state based on the real-time sensor signal of the pressure sensor 300, but a more detailed determination may also be made based on the time-series level fluctuations of the sensor signal of each pressure sensor 300. For example, even if pressure sensors 300 arranged in a planar manner in the lower region of the seat surface 11 of the vehicle seat 10 and in the upper or lower region of the floor carpet 12 near the feet of the occupant both output sensor signals at a certain level, if the time-series level fluctuations of the sensor signals of each pressure sensor 300 show a similar tendency, the level fluctuations can be determined to be due to the shaking of the vehicle while it is moving, and the heavy object on the seat surface 11 of the seat 10 and the floor carpet 12 can be detected as luggage rather than an occupant.

[0063] <Variation 3> In the second embodiment, when the vehicle door is open and the smart key has not been operated, it is determined whether the smart key is inside the vehicle. However, it is also possible to store information about the possession of a digital key for occupants who may be driving in advance, and determine whether the vehicle door is unlocked using either the smart key or a smartphone.

[0064] The vehicle interior abnormality detection devices 1, 1A of the present invention can be realized by recording the processing of the control unit 100 or the determination units 130, 130A and abnormality detection units 140, 140A within the control unit 100 on a computer system-readable recording medium, and having the control unit 100 or the determination units 130, 130A and abnormality detection units 140, 140A within the control unit 100 read and execute the programs recorded on this recording medium. The computer system here includes hardware such as an OS and peripheral devices.

[0065] Furthermore, if a WWW (World Wide Web) system is used, the "computer system" also includes the homepage provision environment (or display environment). The above program may be transmitted from a computer system that stores the program in a storage device or the like to another computer system via a transmission medium or by transmission waves in the transmission medium. Here, the "transmission medium" that transmits the program refers to a medium that has the function of transmitting information, such as a network (communication network) like the Internet or a communication line (communication line) like a telephone line.

[0066] The program may also be a program for implementing some of the above-mentioned functions, or may be a so-called differential file (differential program) that can implement the above-mentioned functions in combination with a program already stored in the computer system.

[0067] The above describes in detail an embodiment of the present invention with reference to the drawings. However, all accident information collection devices that can be implemented by a person skilled in the art by appropriately modifying the design based on the accident information collection device described above as an embodiment of the present invention also fall within the technical scope of the present invention as long as they include the gist of the present invention. Within the scope of the concept of the present invention, a person skilled in the art may conceive of various modifications and alterations, and it is understood that these modifications and alterations also fall within the technical scope of the present invention. For example, any embodiment in which a person skilled in the art has appropriately added or deleted components or modified the design, or added or omitted steps or modified conditions, is included within the technical scope of the present invention as long as it contains the gist of the present invention.

[0068] Furthermore, other effects and advantages brought about by the aspects described in this embodiment that are clear from the description in this specification or that can be appropriately thought of by a person skilled in the art are naturally understood to be brought about by the present invention. Various inventions can be formed by appropriately combining the multiple components disclosed in the above embodiments. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, components from different embodiments may be combined as appropriate. [Explanation of symbols]

[0069] 1. Vehicle interior abnormality detection device 1A: Vehicle interior abnormality detection device 100; control unit 100A; control section 110: Sensor signal processing unit 120;Comparison section 130; Judgment section 130A; Judgment section 140: Abnormality detection unit 140A: Abnormality detection section 200;Information Department 300; Pressure sensor CB; Bus Line

Claims

1. a sensor signal processing unit that receives sensor signals from a group of pressure sensors arranged in a plane; a comparison unit that compares the sensor signal level input by the sensor signal processing unit with a predetermined threshold value; a determination unit that is activated when a comparison result indicating that the sensor signal level exceeds the predetermined threshold is input from the comparison unit while the drive train of the vehicle is stopped, and that determines whether or not a key is present in at least the vehicle interior; an abnormality detection unit that is activated when a comparison result indicating that the sensor signal level exceeds the predetermined threshold is input from the comparison unit while the drive system of the vehicle is stopped, and that detects an abnormality in the vehicle compartment when the key is not present in the vehicle compartment based on the determination result of the determination unit; A vehicle interior abnormality detection device comprising:

2. 2. The vehicle interior abnormality detection device according to claim 1, wherein the predetermined threshold value is set by an occupant to exclude the weight of a child car seat or junior car seat when the child car seat or junior car seat is installed on the seat.

3. The vehicle interior abnormality detection device according to claim 1, wherein the determination unit determines whether the vehicle door key is locked or unlocked, and the abnormality detection unit detects that an occupant has been left behind when the determination result of the determination unit indicates that the vehicle door key is locked and there is no key inside the vehicle interior.

4. The vehicle interior abnormality detection device according to claim 1, wherein the determination unit determines whether the vehicle door key is locked or unlocked, and the abnormality detection unit detects the intrusion of a third party when the determination result of the determination unit indicates that the vehicle door key is unlocked and there is no key inside the vehicle interior.

5. A warning unit is provided to warn of an abnormal condition both inside and outside the vehicle, 5. The vehicle interior abnormality detection device according to claim 3, wherein the notification unit is activated when the abnormality detection unit detects an abnormal state.

6. A pressure sensor and a controller Equipped with The controller includes one or more processors, one or more memories communicatively coupled to the one or more processors, and Including, the one or more processors: Inputting sensor signals from a group of pressure sensors arranged in a plane, Comparing the input sensor signal level with a predetermined threshold value, When the comparison result indicating that the sensor signal level exceeds the predetermined threshold is input while the drive train of the vehicle is stopped, the drive train of the vehicle is started, and it is determined whether or not there is a key in at least the vehicle interior; A vehicle interior abnormality detection device characterized in that, when a determination result indicates that a key is not present in the vehicle interior, an abnormality is detected in the vehicle interior.

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