JP2022086835A - Accident determination device, detection device, accident determination system, accident determination method, and program - Google Patents

Abstract

To prevent a false detection of a vehicle accident.SOLUTION: An accident determination device comprises: a receiving unit that receives shock data related to shock and rotation data related to a rotation from a detection device which is mounted on a vehicle and detects the amount of the shock and rotation applied to the vehicle; a determination unit that determines a vehicle accident when the first shock is detected and the rotation is not detected before the first shock, and determines a cause other than the vehicle accident when the rotation is detected before the first shock based on the shock data and the rotation data; and a display unit for displaying a determination result by the determination unit. According to this, when the first shock is detected and the rotation is not detected before the first shock, it can be determined that the vehicle accident is caused by the shock being applied due to the vehicle accident; and when the rotation is detected before the first shock, it can be determined that the cause is other than the vehicle accident, assuming that the detection device naturally falls, the rotation is applied during a fall, and the shock due to the fall to a floor surface or the like is applied.SELECTED DRAWING: Figure 9

Description

The present invention relates to an accident determination system including an accident determination device for determining a vehicle accident, an accident determination method, and a program, and an in-vehicle detection device and an accident determination device.

A system is known in which a drive recorder including an acceleration sensor is mounted on a vehicle, the output signal is analyzed to detect a vehicle accident, and an emergency measure such as dispatching an emergency vehicle is instructed (for example, Patent Document 1 and Patent Document 1). 2). In such a system, for example, a relatively small acceleration applied to a vehicle when the vehicle travels on a step such as a railroad crossing may be erroneously detected as a vehicle accident. Therefore, it is required to improve the detection accuracy of the vehicle accident. ing. Patent Document 3 further discloses a system in which a gyro sensor for detecting the inclination of a vehicle and an image sensor for photographing the periphery of the vehicle are further mounted, and a system for detecting a vehicle accident by combining these sensors is disclosed.
Patent Document 1 Japanese Patent Application Laid-Open No. 6570782 Patent Document 2 Japanese Patent Application Laid-Open No. 2015-176566 Patent Document 3 Japanese Patent Application Laid-Open No. 2018-25978

However, during traveling, the drive recorder may naturally fall on the floor surface due to the means for fixing the drive recorder to the windshield or the like being removed. There is a concern that the impact generated on the drive recorder due to the natural fall may be erroneously detected as a vehicle accident. It is possible to prevent erroneous detection by analyzing the time-series data output by the accelerometer based on the machine learning model, but the impact when the drive recorder falls naturally and the impact when it falls due to a vehicle accident. Since the time-series waveforms are almost the same in and, it is difficult to distinguish them.

In the first aspect of the present invention, an accident determination device for determining a vehicle accident, from a detection device mounted on the vehicle and detecting an amount of impact and rotation applied to the vehicle, impact data related to impact and rotation related to rotation. If the first impact is detected based on the receiving unit that receives the data and the impact data and rotation data, and the rotation is not detected before the first impact, it is determined as a vehicle accident and before the first impact. Provided is an accident determination device including a determination unit for determining a cause other than a vehicle accident when rotation is detected, and a display unit for displaying a determination result by the determination unit.

In the second aspect of the present invention, an in-vehicle detection device that detects the amount of impact and rotation applied to the vehicle and transmits the impact data and rotation data related to the impact to the accident determination device of the first aspect. Is provided.

In the third aspect of the present invention, there is provided an accident determination system including the accident determination device of the first aspect and a detection device mounted on a vehicle.

A fourth aspect of the present invention is an accident determination method for determining a vehicle accident, from a detection device mounted on the vehicle and detecting an amount of impact and rotation applied to the vehicle, from impact data related to impact and rotation related to rotation. Based on the stage of receiving data and the impact data and rotation data, if the first impact is detected and the rotation is not detected before the first impact, it is determined as a vehicle accident and before the first impact. Provided is an accident determination method including a stage of determining a cause other than a vehicle accident when rotation is detected and a stage of displaying a determination result.

In a fifth aspect of the present invention, a procedure for receiving impact data related to impact and rotation data related to rotation from a detection device mounted on a computer and detecting an amount of impact and rotation applied to the vehicle, and impact data. And, based on the rotation data, if the first impact is detected and the rotation is not detected before the first impact, it is determined as a vehicle accident, and if the rotation is detected before the first impact, the vehicle accident. A program for determining a vehicle accident by executing a procedure for determining a cause other than the above and a procedure for displaying the determination result is provided.

The outline of the above invention does not list all the features of the present invention. A subcombination of these feature groups can also be an invention.

The configuration of the accident determination system according to this embodiment is shown. The configuration of the detection device mounted on each vehicle is shown. The functional configuration of the accident determination device according to this embodiment is shown. The flow of the accident judgment method for judging a vehicle accident is shown. The time transition of the acceleration data (upper row) and the time transition of the rotation data (lower row) at the time of a vehicle accident (without the detection device falling) are shown. The time transition of the acceleration data (upper row) and the time transition of the rotation data (lower row) at the time of a vehicle accident accompanied by the fall of the detection device are shown. The time transition of the acceleration data (upper row) and the time transition of the rotation data (lower row) at the time of the free fall of the detection device are shown. Indicates the presence or absence of rotation detection in the event of a vehicle accident (no fall of the detection device), in the case of a vehicle accident accompanied by the fall of the detection device, in the case of a free fall of the detection device, and in the case of mounting the detection device. The flow of judgment of a vehicle accident is shown. An example of the configuration of the computer according to this embodiment is shown.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention within the scope of the claims. Also, not all combinations of features described in the embodiments are essential to the means of solving the invention.

FIG. 1 shows the configuration of the accident determination system 1 according to the embodiment. The accident determination system 1 collects impact data and rotation data from a plurality of vehicles 20a, 20b, ..., 20n via the network 9, and detects the occurrence of a vehicle accident from the data, such as natural fall and installation of a detection device. It is a network system that makes it possible to prevent erroneous detection of vehicle accidents by distinguishing from causes other than vehicle accidents. The accident determination system 1 includes an accident determination device 10 and vehicles 20a, 20b, ..., 20n (mounted on each of the detection devices 20), which are communicably connected via the network 9.

The network 9 is an example of the Internet, but the network 9 is not limited to this, and any communication such as a local area network or a telephone line can be performed as long as the accident determination device 10 and each detection device 20 can communicate with each other. A network may be adopted, or a network in which a plurality of communication networks are mixed may be adopted.

The accident determination device 10 is a server terminal that manages and operates the accident determination system 1 and determines a vehicle accident, and is implemented by a computer device owned by the administrator. The accident determination device 10 may be implemented by a cloud (a plurality of distributed servers, a plurality of subsystems, or the like). The accident determination device 10 includes a central processing unit (CPU) 16, a communication device 17, a display device 18, and a database 19.

By executing the dedicated program, the CPU 16 causes the accident determination device 10 to exhibit a server function for managing and operating the accident determination system 1 and a determination function for determining a vehicle accident. The functional configuration of the accident determination device 10 will be described later. The dedicated program is stored in, for example, a ROM (not shown) and read by the CPU 16 or stored in a storage medium such as a CD-ROM, and the CPU 16 reads it using a reading device (not shown). It is started by expanding it to RAM.

The communication device 17 is a means for communicating with a plurality of vehicles 20a, 20b, ..., 20n (detection device 20) provided with communication means via the network 9, and as an example, communication using a protocol such as TCP / IP. can do.

The display device 18 is a device that displays a determination result of a vehicle accident, and for example, a liquid crystal display device can be adopted.

The database 19 has a storage device such as a hard disk drive (HDD) for storing various data such as impact data, rotation data, and video data received from each vehicle 20a, 20b, ..., 20n (detection device 20). In this embodiment, the database 19 is connected to the accident determination device 10 via an interface such as SCSI or SATA. The storage device communicably connected to the network 9 may be used as the database 19.

The vehicles 20a, 20b, ..., 20n are vehicles to be detected for vehicle accidents registered in the accident determination system 1. The vehicles 20a, 20b, ..., 20n may include any kind of vehicle such as an ordinary vehicle, a light vehicle, a large vehicle, etc., and each of them is equipped with a detection device 20.

FIG. 2 shows the configuration of the detection device 20 mounted on each vehicle 20a, 20b, ..., 20n. The detection device 20 is a device that detects an image of the surroundings of the vehicle at the time of a vehicle accident, an amount related to impact (acceleration) and rotation applied to the vehicle, and other vehicle conditions such as the current position based on GPS, and transmits the device to the accident determination device 10. Also known as a drive recorder. The detection device 20 includes a housing 29, an image pickup device 21, an acceleration sensor 22, an angular velocity sensor 23, and a communication module 24.

The housing 29 is a case that houses sensors, modules, and the like such as an image pickup device 21 that constitutes the detection device 20. The housing 29 is attached to the windshield using a suction member such as a suction cup or an adhesive, or is attached to the dashboard via a pedestal such as a cradle.

The image pickup device 21 is a device for taking an image of the surroundings of the vehicle 20a, 20b, ..., 20n, particularly the front, and for example, a CCD image sensor, a COMS image sensor, or the like can be adopted. The video data captured by the image pickup device 21 is transmitted to the accident determination device 10 via the communication module 24.

The acceleration sensor 22 is a sensor that detects an impact (acceleration) applied to the vehicles 20a, 20b, ..., 20n. As the acceleration sensor 22, a sensor having any configuration such as "piezoelectric type", "piezoelectric resistance type", and "capacitance type" can be adopted, but a piezoelectric type sensor is adopted to detect a strong impact. good. The acceleration sensor 22 not only detects the acceleration in the front-rear direction (roll axis direction) of the vehicle, but also detects the acceleration in the three axial directions including the left-right direction (pitch axis direction) and the height direction (yaw axis direction). May be good. The detection result of the acceleration sensor 22, that is, the acceleration data is transmitted to the accident determination device 10 as impact data via the communication module 24.

In addition to or in addition to the acceleration sensor 22, a sensor that detects an amount related to the impact applied to the vehicle may be adopted. For example, a speed sensor that detects the speed of the vehicle may be adopted, and acceleration data may be generated by differentially calculating the detection result with respect to time.

The angular velocity sensor 23 is a sensor that detects the rotation applied to the vehicles 20a, 20b, ..., 20n. As the angular velocity sensor 23, a gyro sensor having an arbitrary configuration such as “vibration type” or “capacitance type” can be adopted. The angular velocity sensor 23 is not limited to detecting the angular velocity in the direction of tilting the vehicle back and forth (pitch axis), but also the angular velocity in relation to three axes including the direction of rotation to the left and right (yaw axis) and the direction of tilting to the left and right (roll axis). May be detected. Rotation data may be generated by integrating the detection result of the angular velocity with respect to time. The detection result of the angular velocity sensor 23 is transmitted to the accident determination device 10 as rotation data via the communication module 24.

In addition to or in addition to the angular velocity sensor 23, a sensor that detects an amount related to rotation or inclination applied to the vehicle may be adopted. For example, a rotation or tilt sensor (pitch sensor, roll sensor, yaw sensor) that detects the rotation of the vehicle may be adopted.

The communication module 24 is a wireless communication device that transmits video data received from the image pickup device 21, impact (acceleration) data received from the acceleration sensor 22, and rotation data received from the angular velocity sensor 23 toward the accident determination device 10. .. The communication module 24 may have a function of analyzing these data and a function of temporarily storing them. For example, when the acceleration data of the acceleration sensor 22 indicates an impact applied to the vehicles 20a, 20b, ..., 20n. , Images from a predetermined time before the impact (for example, 1 second, 2 seconds, 3 seconds, etc.) to a predetermined time after the impact (for example, 1 minute, 2 minutes, 3 minutes, etc.) The data, the impact data, and the rotation data are transmitted to the accident determination device 10. As a result, it is possible to obtain only the data for the minimum period necessary for determining the vehicle accident according to the timing of impact detection.

FIG. 3 shows the functional configuration of the accident determination device 10 according to the present embodiment. The accident determination device 10 includes a reception unit 11, a determination unit 12, and a display unit 13.

The receiving unit 11 is a functional unit that receives various data transmitted from the detection device 20 mounted on the vehicles 20a, 20b, ..., 20n. The various data include video data output from the image pickup apparatus 21, impact (acceleration) data output from the acceleration sensor 22, and rotation data output from the angular velocity sensor 23. The received data may be recorded in the database 19.

The determination unit 12 is a functional unit that determines a vehicle accident by distinguishing it from the free fall and installation of the detection device 20 based on various data transmitted from the detection device 20, that is, video data, impact data, and rotation data. The determination unit 12 analyzes the impact (acceleration) applied to the vehicle based on the detection result of the acceleration included in the impact data. It should be noted that the impact applied to the vehicle may be analyzed based on the voice detection result, that is, the voice intensity. Further, the determination unit 12 analyzes the rotation of the vehicle based on the detection result of the angular velocity included in the rotation data. Here, the rotation of the vehicle may be analyzed based on the angular velocity, or the angular velocity may be integrated with respect to time to calculate the rotation amount and analyzed based on this. Further, the determination unit 12 may analyze the rotation of the vehicle from the rotation of the feature amount in the image based on the image around the vehicle, particularly the image in front, included in the image data. Further, the determination unit 12 may analyze the movement of the feature amount in the image, particularly the impact applied to the vehicle from the acceleration of the feature amount, based on the video data.

The details of the determination of the vehicle accident by the determination unit 12 will be further described later.

In the image analysis, the determination unit 12 performs image cropping, low-resolution imaging, low frame rate, and a target area (ROI) for extracting the feature amount in order to extract the feature amount in the image stably and with high accuracy. The feature amount may be extracted by SURF (Speeded-Up Robust Features) or optical flow capable of low arithmetic processing, and the rotation amount may be detected. Here, as a feature amount, an object having a specific shape located in front of the vehicle, for example, a traffic light, a road sign provided near or on the road, a road marking shown on the road, or provided near the road. You may use a signboard or the like.

The display unit 13 is a functional unit that displays the determination result by the determination unit 12 on the display device 18.

FIG. 4 shows a flow of an accident determination method for determining a vehicle accident. In this example, the vehicle 20a is used as a vehicle accident determination target. Here, regardless of the presence or absence of a vehicle accident, the image pickup device 21 included in the detection device 20 mounted on the vehicle 20a images the surroundings of the vehicle 20a, particularly the front of the vehicle, and the acceleration sensor 22 gives an impact to the vehicle 20a ( Acceleration) is detected, and the angular speed sensor 23 detects the rotation applied to the vehicle 20a. The detection results are temporarily stored in the communication module 24.

In step S102, it is determined whether or not an impact applied to the vehicle 20a is detected. The analysis function of the communication module 24 analyzes the acceleration data output from the acceleration sensor 22, and detects an impact when the acceleration detection result exceeds a predetermined threshold value. If no impact is detected, step S102 is repeated. When the impact is detected, the process proceeds to the next step S104.

In step S104, the detection device 20 (communication module 24) transmits video data, impact data, and rotation data to the accident determination device 10. Here, the communication module 24 of the detection device 20 transmits video data, impact data, and rotation data from a predetermined time before the impact is detected in step S102 to a predetermined time after the impact is detected.

In step S106, the accident determination device 10 (reception unit 11) receives the video data, the impact data, and the rotation data transmitted from the detection device 20 of the vehicle 20a. The receiving unit 11 receives video data and impact data from a predetermined time before the first impact transmitted from the vehicle detection device 20 in step S104 when the impact data indicates the first impact in step S102. , And rotation data will be received.

5 to 7 show the time transition (upper) and rotation data of the impact data at the time of vehicle accident (no fall of the detection device), at the time of vehicle accident accompanied by the fall of the detection device, and at the time of natural fall of the detection device, respectively. An example of the time transition (lower) of is shown. In this example, acceleration is shown as impact data and angular velocity is shown as rotation data. As shown in FIG. 5, in the event of a vehicle accident, one strong impact (accident impact) is detected due to the vehicle accident. However, since the detection device 20 does not fall, rotation is not detected before and after the accident impact. However, after the impact of the accident, a small rotation due to the rotation of the vehicle may be detected. In addition, the second and subsequent impacts are not detected after the accident impact.

On the other hand, as shown in FIG. 6, in the case of a vehicle accident accompanied by a fall of the detection device 20 due to the impact of the vehicle accident, the impact due to the vehicle accident and the drop of the detection device 20 on the floor surface or the dashboard are caused. Two strong impacts with the impact are detected. Here, when the detection device 20 falls, the detection device 20 detects the first impact (accident impact) due to a vehicle accident and then detects the second impact due to the fall of the detection device 20. Rotation is detected. In this example, the detection device 20 rotates in one direction while it naturally falls, and then rotates so as to return in the opposite direction, so that a positive peak of angular acceleration and a subsequent negative peak are detected. There is. After detecting the second impact due to the drop of the detection device 20, the repetition of positive and negative peaks of the angular velocity gradually attenuated by the detection device 20 rolling on the floor surface or the dashboard is detected.

Further, as shown in FIG. 7, when the detection device 20 naturally falls, one impact (drop impact) due to the fall of the detection device 20 on the floor surface or the dashboard is detected. Here, when the detection device 20 falls, the rotation of the detection device 20 is detected before the drop impact is detected. After detecting the drop impact, the detection device 20 rolls on the floor surface or the dashboard, and the repetition of positive and negative peaks of the angular velocity that gradually attenuates is detected. Before and after the drop impact, rotation data of substantially the same behavior as at the time of the vehicle accident accompanied by the fall of the detection device 20 is detected before and after the drop impact, except that the impact due to the vehicle accident (accident impact) is not detected.

When the user manually attaches the dropped detection device 20 to the windshield, the user grasps the detection device 20 and moves it toward the windshield to detect rotation, and the detection device 20 is mounted on the windshield. The impact is detected by pressing the windshield, and the subsequent impact and rotation are not detected by fixing the detection device 20 to the windshield. That is, one impact and the rotation before that are detected.

FIG. 8 shows rotation detection and the presence / absence of a second impact at the time of a vehicle accident (no fall of the detection device), a vehicle accident accompanied by a fall of the detection device, a natural fall of the detection device, and installation of the detection device. .. In the event of a vehicle accident, the rotation of the detection device 20 is not detected before the first impact due to the vehicle accident is detected, regardless of whether or not the detection device 20 is dropped. When the detection device 20 is dropped, the rotation is detected between the first impact detection and the second impact due to the drop. On the other hand, when the detection device 20 is naturally dropped and attached, rotation is detected before the first impact due to the drop or attachment. After the impact, further rotation is detected when the product is dropped, whereas no rotation is detected when the product is mounted. Therefore, it can be seen that the vehicle accident can be determined separately from the free fall and installation of the detection device 20 depending on whether or not the rotation is detected before the first impact is detected.

In step S200, the accident determination device 10 (determination unit 12) determines a vehicle accident based on the video data, impact data, and rotation data received in step S106. Here, as described above, by combining not only the impact data but also the rotation data and other data, the vehicle accident is determined separately from the natural drop and the attachment of the detection device 20. FIG. 9 shows a flow of determining a vehicle accident in step S200.

In step S202, the determination unit 12 determines whether or not rotation is detected before the first impact, based on the video data, impact data, and rotation data. If the angular velocity (which may be the amount of rotation) before the first impact does not exceed a predetermined threshold value, the determination unit 12 proceeds to step S204 assuming that no rotation is detected, and if the threshold value is exceeded, the rotation occurs. It is assumed that it has been detected, and the process proceeds to step S220. As a result, if the first impact is detected and the rotation is not detected before the first impact, it is determined as a vehicle accident, and if the rotation is detected before the first impact, a cause other than the vehicle accident is determined. Is determined.

In step S204, it is determined whether or not rotation is detected after the first impact. If the angular velocity (which may be the amount of rotation) after the first impact does not exceed a predetermined threshold, the determination unit 12 proceeds to step S206 assuming that no rotation has been detected, and here, according to the table of FIG. 8, the vehicle. If it is determined that an accident (however, the detection device 20 does not fall) and the threshold value is exceeded, the process proceeds to step S208 assuming that rotation is detected.

In step S208, it is determined whether or not the second impact is detected within a predetermined time after the first impact. If the second impact (acceleration) does not exceed a predetermined threshold value, the determination unit 12 proceeds to step S210 assuming that the second impact has not been detected, and causes a vehicle accident (however, the detection device 20 is dropped). However, if the threshold value is exceeded, the process proceeds to step S212 assuming that the second impact is detected, and here, according to the table of FIG. 8, a vehicle accident accompanied by the fall of the detection device 20. judge.

By proceeding to step S212, the determination unit 12 does not detect rotation before the first impact (determination in step S202 is N), and detects rotation after the first impact (determination in step S204 is Y). ), And when the second impact is detected (the determination in step S208 is Y), it is determined that the detection device 20 has fallen due to a vehicle accident. Here, the rotation is detected after the first impact, and the fall of the detection device 20 is determined by detecting the second impact, but the rotation is not detected before the first impact. Therefore, it can be determined that the vehicle accident is accompanied by the fall of the detection device 20.

In step S220, it is determined whether or not rotation is detected after the first impact. If the angular velocity (which may be the amount of rotation) after the first impact does not exceed a predetermined threshold, the determination unit 12 proceeds to step S222 assuming that no rotation has been detected, and detects it according to the table of FIG. If it is determined that the device 20 is installed and it is not a vehicle accident and the threshold value is exceeded, the process proceeds to step S224 assuming that rotation is detected, and here, according to the table of FIG. Judge that it is not. It may be determined whether or not a second impact is detected following step S224. When the subsequent impact is detected, it can be determined that the detection device 20 is naturally dropped with a plurality of impacts.

If a vehicle accident or the like is determined in steps S206, S210, S212, S222, and S224, the process proceeds to step S110.

In step S110, the accident determination device 10 (display unit 13) displays the determination result of the vehicle accident on the display device 18. If it is determined to be a vehicle accident, the manager can take emergency measures for the vehicle accident such as the activation of an emergency vehicle.

According to the accident determination device 10 according to the present embodiment, the impact data related to the impact and the rotation data related to the rotation are obtained from the detection device 20 mounted on the vehicles 20a, 20b, ..., 20n and detecting the amount of the impact and the rotation applied to the vehicle. If the first impact is detected based on the receiving unit 11 and the impact data and the rotation data, and the rotation is not detected before the first impact, it is determined as a vehicle accident and the vehicle rotates before the first impact. It is provided with a determination unit 12 for determining a cause other than a vehicle accident when is detected, and a display unit 13 for displaying a determination result by the determination unit 12. According to this, the first impact is detected by the receiving unit 11 based on the impact data and the rotation data received from the detection device 20 mounted on the vehicles 20a, 20b, ..., 20n, and before the first impact. If the rotation is not detected, it is determined that the vehicle accident was caused by the impact, and if the rotation is detected before the first impact, the detection device 20 is falling due to the natural fall. It can be determined that the cause is other than the vehicle accident, assuming that the rotation is applied to the vehicle and the impact due to the fall to the floor surface or the like is applied, or the impact due to the rotation and installation due to the user picking up the detection device 20 is applied. It is possible to determine a vehicle accident by distinguishing it from the natural fall and installation of the detection device 20, that is, to prevent erroneous detection of the vehicle accident.

According to the accident determination method according to the present embodiment, impact data related to impact and rotation data related to rotation are received from the detection device 20 mounted on the vehicles 20a, 20b, ..., 20n and detecting the amount of impact and rotation applied to the vehicle. If the first impact is detected and the rotation is not detected before the first impact, it is determined as a vehicle accident and the rotation is detected before the first impact. In that case, it is provided with a stage of determining the cause other than the vehicle accident and a stage of displaying the determination result. According to this, the first impact is detected by the receiving unit 11 based on the impact data and the rotation data received from the detection device 20 mounted on the vehicles 20a, 20b, ..., 20n, and before the first impact. If the rotation is not detected, it is determined that the vehicle accident was caused by the impact, and if the rotation is detected before the first impact, the detection device 20 is falling due to the natural fall. It can be determined that the cause is other than the vehicle accident, assuming that the rotation is applied to the vehicle and the impact due to the fall to the floor surface or the like is applied, or the impact due to the rotation and installation due to the user picking up the detection device 20 is applied. It is possible to determine a vehicle accident by distinguishing it from the natural fall and installation of the detection device 20, that is, to prevent erroneous detection of the vehicle accident.

Further, according to the vehicle-mounted detection device 20 according to the present embodiment, the amount related to the impact and rotation applied to the vehicles 20a, 20b, ..., 20n is detected, and the impact data related to the impact and the rotation data related to the rotation are used as the accident determination device 10. Send to. The accident determination device 10 makes it possible to determine a vehicle accident based on the impact data and the rotation data, distinguishing it from the natural fall and installation of the detection device 20, that is, to prevent erroneous detection of the vehicle accident.

Further, according to the accident determination system 1 according to the present embodiment, the accident determination device 10 and the detection device 20 mounted on the vehicles 20a, 20b, ..., 20n are provided. The accident determination device 10 determines a vehicle accident based on the impact data and rotation data transmitted from the detection device 20, distinguishing it from the natural fall and installation of the detection device 20, that is, avoiding erroneous detection of the vehicle accident. A network system that can be used is constructed.

In addition, in the detection device 20, instead of or in addition to the acceleration sensor 22, a voice sensor (microphone) for detecting the voice in the vehicle may be used. As the voice sensor, a sensor having an arbitrary configuration such as an electrokinetic type, an electrostatic type, or a piezoelectric type may be adopted. The voice sensor detects the impact sound and the voice sound of the occupant in the vehicle due to the vehicle accident, and transmits the detection result, that is, the voice data as the impact data to the accident determination device 10 via the communication module 24. In such cases, instead of or in addition to the acceleration data, the impact applied to the vehicle is detected based on the audio data, for example, based on the intensity of the audio.

Various embodiments of the present invention may be described with reference to flowcharts and block diagrams, wherein the block is (1) a stage of the process in which the operation is performed or (2) a device having a role of performing the operation. May represent a section of. Specific stages and sections are implemented by dedicated circuits, programmable circuits supplied with computer-readable instructions stored on computer-readable media, and / or processors supplied with computer-readable instructions stored on computer-readable media. It's okay. Dedicated circuits may include digital and / or analog hardware circuits, and may include integrated circuits (ICs) and / or discrete circuits. A programmable circuit is a memory element such as logical AND, logical OR, logical XOR, logical NAND, logical NOR, and other logical operations, flip-flops, registers, field programmable gate arrays (FPGAs), programmable logic arrays (PLA), etc. May include reconfigurable hardware circuits, including, etc.

The computer readable medium may include any tangible device capable of storing instructions executed by the appropriate device, so that the computer readable medium having the instructions stored therein is specified in a flow chart or block diagram. It will be equipped with a product that contains instructions that can be executed to create means for performing the operation. Examples of computer-readable media may include electronic storage media, magnetic storage media, optical storage media, electromagnetic storage media, semiconductor storage media, and the like. More specific examples of computer readable media include floppy (registered trademark) disks, diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), Electrically erasable programmable read-only memory (EEPROM), static random access memory (SRAM), compact disc read-only memory (CD-ROM), digital versatile disc (DVD), Blu-ray (RTM) disc, memory stick, integrated A circuit card or the like may be included.

Computer-readable instructions include assembler instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcodes, firmware instructions, state-setting data, or Smalltalk®, JAVA®, C ++, etc. Object-oriented programming languages, and either source code or object code written in any combination of one or more programming languages, including traditional procedural programming languages such as the "C" programming language or similar programming languages. May include.

Computer-readable instructions are used locally or to a local area network (LAN), wide area network (WAN) such as the Internet, to a general purpose computer, a special purpose computer, or the processor or programmable circuit of another programmable data processing device. ) May execute computer-readable instructions to create means for performing the operations specified in the flowchart or block diagram. Examples of processors include computer processors, processing units, microprocessors, digital signal processors, controllers, microcontrollers, and the like.

FIG. 10 shows an example of a computer 2200 in which a plurality of aspects of the present invention may be embodied in whole or in part. The program installed on the computer 2200 can cause the computer 2200 to function as an operation associated with the device according to an embodiment of the present invention or as one or more sections of the device, or the operation or the one or more. Sections can be run and / or the computer 2200 can be run a process according to an embodiment of the invention or a stage of such process. Such a program may be run by the CPU 2212 to cause the computer 2200 to perform certain operations associated with some or all of the blocks of the flowcharts and block diagrams described herein.

The computer 2200 according to this embodiment includes a CPU 2212, a RAM 2214, a graphic controller 2216, and a display device 2218, which are interconnected by a host controller 2210. The computer 2200 also includes input / output units such as a communication interface 2222, a hard disk drive 2224, a DVD-ROM drive 2226, and an IC card drive, which are connected to the host controller 2210 via the input / output controller 2220. There is. The computer also includes legacy input / output units such as the ROM 2230 and keyboard 2242, which are connected to the input / output controller 2220 via an input / output chip 2240.

The CPU 2212 operates according to a program stored in the ROM 2230 and the RAM 2214, thereby controlling each unit. The graphic controller 2216 acquires the image data generated by the CPU 2212 in a frame buffer or the like provided in the RAM 2214 or itself so that the image data is displayed on the display device 2218. The graphic controller 2216 is not limited to the process of displaying the image data on the display device 2218, and may perform all or part of the data processing such as generating the image data in the same manner as the CPU 2212.

The communication interface 2222 communicates with other electronic devices via the network. The hard disk drive 2224 stores programs and data used by the CPU 2212 in the computer 2200. The DVD-ROM drive 2226 reads the program or data from the DVD-ROM 2201 and provides the program or data to the hard disk drive 2224 via the RAM 2214. The IC card drive reads programs and data from the IC card and / or writes programs and data to the IC card.

The ROM 2230 contains a boot program or the like executed by the computer 2200 at the time of activation, and / or a program depending on the hardware of the computer 2200. The input / output chip 2240 may also connect various input / output units to the input / output controller 2220 via a parallel port, serial port, keyboard port, mouse port, and the like.

The program is provided by a computer-readable medium such as a DVD-ROM 2201 or an IC card. The program is read from a computer-readable medium, installed on a hard disk drive 2224, RAM2214, or ROM2230, which is also an example of a computer-readable medium, and executed by the CPU 2212. The information processing described in these programs is read by the computer 2200 and provides a link between the program and the various types of hardware resources described above. The device or method may be configured to implement the manipulation or processing of information in accordance with the use of computer 2200.

For example, when communication is executed between the computer 2200 and an external device, the CPU 2212 executes a communication program loaded in the RAM 2214, and performs communication processing on the communication interface 2222 based on the processing described in the communication program. You may order. Under the control of the CPU 2212, the communication interface 2222 reads and reads transmission data stored in a transmission buffer processing area provided in a recording medium such as a RAM 2214, a hard disk drive 2224, a DVD-ROM 2201, or an IC card. The data is transmitted to the network, or the received data received from the network is written to the reception buffer processing area provided on the recording medium.

Further, the CPU 2212 makes the RAM 2214 read all or necessary parts of the file or the database stored in the external recording medium such as the hard disk drive 2224, the DVD-ROM drive 2226 (DVD-ROM2201), and the IC card. Various types of processing may be performed on the data on the RAM 2214. The CPU 2212 then writes back the processed data to an external recording medium.

Various types of information such as various types of programs, data, tables, and databases may be stored in recording media and processed. The CPU 2212 describes various types of operations, information processing, conditional judgment, conditional branching, unconditional branching, and information retrieval described in various parts of the present disclosure with respect to the data read from the RAM 2214. Various types of processing may be performed, including / replacement, etc., and the results are written back to RAM 2214. Further, the CPU 2212 may search for information in a file, a database, or the like in the recording medium. For example, when a plurality of entries each having an attribute value of the first attribute associated with the attribute value of the second attribute are stored in the recording medium, the CPU 2212 specifies the attribute value of the first attribute. Search for an entry that matches the condition from the plurality of entries, read the attribute value of the second attribute stored in the entry, and associate it with the first attribute that satisfies the predetermined condition. The attribute value of the second attribute obtained may be acquired.

The program or software module described above may be stored on or near a computer 2200 on a computer-readable medium. Also, a recording medium such as a hard disk or RAM provided within a dedicated communication network or a server system connected to the Internet can be used as a computer readable medium, thereby providing the program to the computer 2200 over the network. do.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various changes or improvements can be made to the above embodiments. It is clear from the description of the claims that the form with such changes or improvements may be included in the technical scope of the present invention.

The order of execution of each process such as operation, procedure, step, and step in the apparatus, system, program, and method shown in the claims, specification, and drawings is particularly "before" and "prior to". It should be noted that it can be realized in any order unless the output of the previous process is used in the subsequent process. Even if the scope of claims, the specification, and the operation flow in the drawings are explained using "first", "next", etc. for convenience, it means that it is essential to carry out in this order. It's not a thing.

1 ... Accident determination system, 9 ... Network, 10 ... Accident determination device, 11 ... Receiver unit, 12 ... Judgment unit, 13 ... Display unit, 16 ... CPU, 17 ... Communication device, 19 ... Database, 20 ... Detection device, 20a , 20b, ..., 20n ... vehicle, 21 ... image pickup device, 22 ... acceleration sensor, 23 ... angular speed sensor, 24 ... communication module, 29 ... housing, 2200 ... computer, 2201 ... DVD-ROM, 2210 ... host controller, 2212. CPU, 2214 ... RAM, 2216 ... graphic controller, 2218 ... display device, 2220 ... input / output controller, 2222 ... communication interface, 2224 ... hard disk drive, 2226 ... DVD-ROM drive, 2240 ... input / output chip, 2242 ... keyboard.

Claims (13)

It is an accident judgment device that judges vehicle accidents.
A receiving unit that receives impact data related to the impact and rotation data related to the rotation from a detection device mounted on the vehicle and detecting an amount related to the impact and rotation applied to the vehicle.
Based on the impact data and the rotation data, if the first impact is detected and the rotation is not detected before the first impact, it is determined as a vehicle accident, and the rotation is detected before the first impact. Judgment unit that determines the cause other than the vehicle accident when it is
A display unit that displays the determination result by the determination unit, and
Accident judgment device equipped with. The determination unit detects the rotation due to the vehicle accident when the rotation is not detected before the first impact, the rotation is detected after the first impact, and the second impact is further detected. The accident determination device according to claim 1, wherein the device is determined to have fallen. The determination unit detects rotation before the first impact, and when rotation is detected after the first impact, the detection device spontaneously falls, and rotation is detected after the first impact. The accident determination device according to claim 1 or 2, which determines that the detection device is attached if the detection device is not installed. The receiving unit receives the impact data and the rotation data from a predetermined time before the first impact transmitted from the detection device of the vehicle when the impact data indicates the first impact. The accident determination device according to any one of claims 1 to 3. The detection device includes an angular velocity sensor that detects an angular velocity applied to the vehicle, and the rotation data includes a detection result of an angular velocity applied to the vehicle by the angular velocity sensor.
The accident determination device according to any one of claims 1 to 4, wherein the determination unit analyzes the rotation of the vehicle based on the detection result of the angular velocity. The detection device includes an image pickup device that captures an image of the outside of the vehicle, and the rotation data is video data including an image of the outside of the vehicle captured by the image pickup device.
The accident determination device according to any one of claims 1 to 5, wherein the determination unit analyzes the rotation of the vehicle from the rotation of the feature amount in the image based on the image data. The impact data includes the video data.
The accident determination device according to claim 6, wherein the determination unit analyzes an impact applied to the vehicle from the movement of a feature amount in the image based on the image data. The detection device includes an acceleration sensor that detects the acceleration applied to the vehicle, and the impact data includes the detection result of the acceleration applied to the vehicle by the acceleration sensor.
The accident determination device according to any one of claims 1 to 7, wherein the determination unit analyzes an impact applied to the vehicle based on the detection result of the acceleration. The detection device includes a voice sensor for detecting the voice in the vehicle, and the impact data includes the detection result of the voice in the vehicle by the voice sensor.
The accident determination device according to any one of claims 1 to 8, wherein the determination unit analyzes an impact applied to the vehicle based on the detection result of the voice. Vehicle-mounted detection that detects the amount of impact and rotation applied to the vehicle and transmits the impact data and rotation data related to the impact to the accident determination device according to any one of claims 1 to 9. Device. The accident determination device according to any one of claims 1 to 9, and the accident determination device.
The detection device mounted on the vehicle and
Accident judgment system equipped with. It is an accident judgment method for judging vehicle accidents.
A stage of receiving impact data related to the impact and rotation data related to the rotation from a detection device mounted on the vehicle and detecting the amount of impact and rotation applied to the vehicle.
Based on the impact data and the rotation data, if the first impact is detected and the rotation is not detected before the first impact, it is determined as a vehicle accident, and the rotation is detected before the first impact. If this is the case, the stage of determining the cause other than the vehicle accident and
The stage of displaying the judgment result and
Accident judgment method. On the computer
A procedure for receiving impact data related to the impact and rotation data related to the rotation from a detection device mounted on the vehicle and detecting the amount of impact and rotation applied to the vehicle.
Based on the impact data and the rotation data, if the first impact is detected and the rotation is not detected before the first impact, it is determined as a vehicle accident, and the rotation is detected before the first impact. If this is the case, the procedure for determining the cause other than the vehicle accident and the procedure
The procedure for displaying the judgment result and
A program that determines a vehicle accident by executing.

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