JP2024039803A - Traffic accident prevention system, traffic accident prevention method, traffic accident prevention program, terminal, and cloud device - Google Patents

Abstract

To provide a traffic accident prevention system capable of appropriately detecting a dangerous action of a user, a traffic accident prevention method, a traffic accident prevention program, a terminal, and a cloud device.SOLUTION: A traffic accident prevention system comprises a terminal 1 and a cloud device 2. In the traffic accident prevention system, the terminal 1 includes a detection section 11, a terminal side transmission section 12, a positional information acquisition section 14, a terminal side reception section 13, a determination section 161, and an alarm section 15. The cloud device 2 includes a cloud device side reception section 21, a threshold determination section 231, a storage section 24, and a cloud device side transmission section 22. The operations of respective components are as described in the description.SELECTED DRAWING: Figure 1

Description

The present invention relates to a traffic accident prevention system, a traffic accident prevention method, a traffic accident prevention program, a terminal, and a cloud device.

Various techniques for preventing traffic accidents have been disclosed. For example, Patent Document 1 discloses that, before entering a danger management area where caution should be taken regarding traffic, current position data indicating the latitude and longitude of each of a plurality of pedestrians is acquired, and based on the current position data, the danger management area is An in-vehicle device is disclosed that determines whether or not to issue a warning within the vehicle.

Japanese Patent Application Publication No. 2018-151712

The in-vehicle device disclosed in Patent Document 1 attempts to suppress traffic accidents by alerting the driver of the vehicle when the vehicle enters an area where traffic accidents are likely to occur.
On the other hand, when trying to prevent pedestrian traffic accidents, for example, it is necessary to consider not only the location information of places where traffic accidents are likely to occur, but also dangerous behavior such as sudden running, changes in direction, and sudden stops of pedestrians. It is necessary to put it in.
In the technique disclosed in Patent Document 1, it is not possible to take these dangerous behaviors into consideration and suppress the occurrence of traffic accidents.

The present disclosure has been made to solve such problems, and includes a traffic accident prevention system, a traffic accident prevention method, a traffic accident prevention program, a terminal, and a cloud that can appropriately detect dangerous behavior of users. The purpose is to provide equipment.

The traffic accident prevention system according to the present disclosure is
A traffic accident prevention system comprising a terminal and a cloud device,
The terminal is
a detection unit that detects at least the acceleration of the user;
a terminal-side transmitter that transmits the acceleration detected by the detector or a value indicating the magnitude of the acceleration to a cloud device;
a location information acquisition unit that acquires location information of the user;
a terminal-side receiving unit that receives from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
A determining unit that determines whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location. and,
a warning unit that notifies the user of a warning when the determination unit determines that the user is engaging in dangerous behavior;
The cloud device
a cloud device-side receiving unit that receives at least the acceleration detected by the terminal or a value indicating the magnitude of the acceleration;
a threshold determining unit that determines a threshold regarding the acceleration for each user based on the received acceleration of the user;
a storage unit that stores location information of the dangerous location;
a cloud device-side transmitting unit that transmits the threshold determined by the threshold determining unit and position information of a dangerous spot stored in the storage unit to the terminal;
It is a traffic accident prevention system.

The traffic accident prevention method according to this disclosure is as follows:
The terminal is
detect at least the user's acceleration;
Send the detected acceleration or a value indicating the magnitude of the acceleration to the cloud device,
Obtaining the location information of the user,
receiving from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
Determining whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location;
If it is determined that the user is engaging in dangerous behavior, a warning is sent to the user;
The cloud device
receiving at least the acceleration of the user detected by the terminal;
determining a threshold regarding the acceleration for each user based on the received acceleration of the user;
Memorize the location information of the dangerous place,
transmitting the determined threshold value and the location information of the dangerous place to be stored to the terminal;
This is a method for preventing traffic accidents.

The terminal according to the present disclosure is
a detection unit that detects at least the acceleration of the user;
a terminal-side transmitter that transmits the acceleration detected by the detector or a value indicating the magnitude of the acceleration to a cloud device;
a location information acquisition unit that acquires location information of the user;
a terminal-side receiving unit that receives from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
A determination unit that determines whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location. and,
a warning unit that notifies the user of a warning when the determination unit determines that the user is engaging in dangerous behavior;
It is a terminal.

The traffic accident prevention program related to this disclosure is
detect at least the user's acceleration;
Send the detected acceleration or a value indicating the magnitude of the acceleration to the cloud device,
Obtaining the location information of the user,
receiving from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
Determining whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location;
If it is determined that the user is engaging in dangerous behavior, the computer notifies the user of a warning and causes the computer to execute a process;
This is a traffic accident prevention program.

The cloud device according to the present disclosure is
a cloud device-side receiving unit that receives at least the user's acceleration detected by the terminal;
a threshold determining unit that determines a threshold regarding the acceleration for each user based on the received acceleration of the user;
a storage unit that stores location information of the dangerous location;
a cloud device-side transmitting unit that transmits the threshold determined by the threshold determining unit and position information of a dangerous spot stored in the storage unit to the terminal;
It is a cloud device.

The traffic accident prevention program related to this disclosure is
receive at least the user's acceleration detected by the terminal;
determining a threshold regarding the acceleration for each user based on the received acceleration of the user;
Memorizes location information of dangerous areas,
transmitting the determined threshold value and location information of the dangerous area to the terminal; causing a computer to execute a process;
This is a traffic accident prevention program.

According to the present disclosure, it is possible to provide a traffic accident prevention system, a traffic accident prevention method, a traffic accident prevention program, a terminal, and a cloud device that can appropriately detect dangerous behavior of users.

FIG. 1 is a block diagram showing the configuration of a traffic accident prevention system according to a first embodiment. FIG. 2 is a block diagram showing the configuration of a terminal according to the first embodiment. FIG. 1 is a block diagram showing the configuration of a cloud device according to a first embodiment. 5 is a flowchart showing the operation of the terminal according to the first embodiment. 3 is a flowchart showing the operation of the cloud device according to the first embodiment. FIG. 2 is a block diagram showing the configuration of a traffic accident prevention system according to a second embodiment. FIG. 2 is a block diagram showing the configuration of a terminal according to a second embodiment. FIG. 2 is a block diagram showing the configuration of a terminal according to a second embodiment. FIG. 2 is a block diagram showing the configuration of a cloud device according to a second embodiment. FIG. 2 is a block diagram showing the configuration of a cloud device according to a second embodiment. 7 is a flowchart showing the operation of the terminal according to the second embodiment. 7 is a flowchart showing the operation of the terminal according to the second embodiment. 7 is a flowchart showing the operation of the terminal according to the second embodiment. It is a flowchart which shows the operation of the cloud device concerning a 2nd embodiment. FIG. 3 is a block diagram showing the configuration of a terminal according to a third embodiment.

(First embodiment)
<Configuration of traffic accident prevention system>
Hereinafter, the first embodiment will be described in detail with reference to the drawings. Figure 1 shows the first
1 is a block diagram showing the configuration of a traffic accident prevention system according to an embodiment of the present invention.

The traffic accident prevention system 101 according to this embodiment notifies the user of a warning when the user takes a dangerous action. A traffic accident prevention system 101 according to this embodiment includes a terminal 1 and a cloud device 2.

However, the dangerous behavior here is, for example, behavior that involves a change in the user's acceleration, such as a sudden start, a change in direction, or a sudden stop. Dangerous actions include actions that can cause accidents and actions to avoid accidents, so by detecting dangerous actions and taking appropriate responses, accidents can be prevented from occurring.

It should be noted that dangerous actions include not only changes in the user's acceleration but also actions that involve changes in the user's angular acceleration, such as a change in direction. Such dangerous behavior may be detected based on the user's angular acceleration.

FIG. 2 is a block diagram showing the configuration of a terminal according to the first embodiment. The terminal 1 includes a detection section 11 , a terminal-side transmission section 12 , a terminal-side reception section 13 , a position information acquisition section 14 , a warning section 15 , and a determination section 161 .

The detection unit 11 detects at least the acceleration of the user. The detection unit 11 outputs the detected acceleration to the terminal side transmission unit 12 and the determination unit 161. The terminal-side transmitter 12 transmits the acceleration detected by the detector 11 to the cloud device.

Note that the detection unit 11 may detect not only the user's acceleration but also the user's angular acceleration or geomagnetism, for example. Then, the terminal-side transmitter 12 may transmit these pieces of information together to the cloud device.

The terminal-side receiving unit 13 receives at least a threshold related to acceleration determined for each user based on the user's acceleration and position information of a dangerous spot. The terminal-side receiving unit 13 outputs the received acceleration threshold and the position information of the dangerous spot to the determining unit 161.

Note that the term "dangerous location" here refers to a point or area where a traffic accident is likely to occur. A dangerous location may refer to a point or area where a statistically large number of traffic accidents occur, for example. Moreover, a dangerous place may refer to a point or area having a specific structure where traffic accidents are likely to occur, such as an intersection or a slope.

Here, the threshold related to acceleration may be, for example, a threshold determined for a value indicating the magnitude of acceleration.
However, the value indicating the magnitude of the acceleration may be a value obtained by performing various processing on the acceleration detected by the detection unit 11, and the larger the acceleration caused by the user's actions, the more It may be a value that increases. Alternatively, the value itself may be the value of the magnitude of acceleration.

The value indicating the magnitude of acceleration may be, for example, a value of the magnitude of acceleration obtained by removing a component derived from the earth's gravity from the acceleration detected by the detection unit 11.
Further, the value indicating the magnitude of acceleration may be, for example, a value obtained by squaring the value of the magnitude of acceleration obtained by removing a component derived from the earth's gravity from the acceleration detected by the detection unit 11.

The location information acquisition unit 14 acquires the user's location information. The location information acquisition unit 14 outputs the acquired user's location information to the determination unit 161.

The determination unit 161 acquires at least the user's acceleration from the detection unit 11, acquires the user's position information from the position information acquisition unit 14, and acquires at least a threshold related to acceleration and position information of the dangerous place from the terminal side reception unit 13. and get .

The determining unit 161 determines whether the user is engaging in dangerous behavior based on the user's acceleration, the user's location information, a threshold related to acceleration, and the location information of the dangerous spot.
The determination unit 161 outputs to the warning unit 15 a determination result as to whether or not the user is engaging in dangerous behavior.

The warning unit 15 obtains a determination result from the determination unit 161 as to whether or not the user is engaging in dangerous behavior. The warning unit 15 notifies the user of a warning when the determination unit 161 determines that the user is engaging in dangerous behavior.

FIG. 3 is a block diagram showing the configuration of the cloud device according to the first embodiment. The cloud device 2 includes a cloud device-side receiving section 21, a cloud device-side transmitting section 22, a threshold determining section 231, and a storage section 24.

The cloud device side receiving unit 21 receives at least the user's acceleration detected by the terminal 1. The cloud device side receiving unit 21 outputs the received acceleration of the user to the threshold determining unit 231.

The threshold determining unit 231 acquires the user's acceleration from the cloud device side receiving unit 21. The threshold determination unit 231 determines a threshold related to acceleration for each user based on the received acceleration. The threshold determining unit 231 outputs the determined threshold regarding acceleration to the cloud device side transmitting unit 22.

The storage unit 24 stores position information of dangerous locations. The storage unit 24 outputs the stored location information of the dangerous place to the cloud device side transmission unit 22.
The cloud device side transmission unit 22 acquires the acceleration threshold from the threshold determination unit 231 and acquires the position information of the dangerous spot from the storage unit 24 . The cloud device side transmitter 22 transmits to the terminal 1 the threshold related to acceleration determined by the threshold value determiner 231 and the position information of the dangerous spot stored in the storage unit 24 .

<Operation of traffic accident prevention system>
Next, the operation of the traffic accident prevention system according to the first embodiment, that is, the traffic accident prevention method, will be described in detail with reference to the drawings. In the following description, reference will be made to FIGS. 1 to 3 as appropriate. First, the operation of the terminal 1 according to this embodiment will be explained in detail.

FIG. 4 is a flowchart showing the operation of the terminal according to the first embodiment. First, the detection unit 11 detects the acceleration of the user (step S101). Next, the terminal-side transmitter 12 transmits the detected acceleration to the cloud device 2 (step S102).

Next, the location information acquisition unit 14 acquires the user's location information (step S103).
Next, the terminal-side receiving unit 13 receives the threshold related to acceleration and the position information of the dangerous spot from the cloud device (step S104).

Next, the determination unit 161 determines whether or not the user is engaging in dangerous behavior (step S105). More specifically, the determination unit 161 determines whether or not the user is taking a dangerous action based on the user's acceleration, the user's location information, the acceleration-related threshold, and the location information of the dangerous location. Determine.

If the user is not taking any dangerous action (step S105 NO), the terminal 1 ends the series of operations.
If the user is taking a dangerous action (step S105 YES), the warning unit 15 notifies the user of a warning (step S106), and the terminal 1 ends the series of operations.

However, the operations from step S101 to step S106 may be performed in parallel and continuously. Moreover, step S102 and step S104 may be skipped or may be steps that are executed every predetermined period.

Next, the operation of the cloud device 2 according to this embodiment will be described in detail. FIG. 5 is a flowchart showing the operation of the cloud device according to the first embodiment.
First, the cloud device side receiving unit 21 receives the user's acceleration from the terminal 1 (step S201). More specifically, the cloud device side receiving unit 21 receives the user's acceleration transmitted from the terminal 1 in step S102 described above.

Next, the threshold determining unit 231 determines a threshold regarding acceleration for each user based on the received acceleration (step S202). More specifically, the threshold determination unit 231 executes various processes on the received acceleration and determines a threshold regarding acceleration for each user.

Finally, the cloud device-side transmitter 22 transmits the acceleration-related threshold and the location information of the dangerous spot to the terminal 1 (step S203), and the cloud device 2 ends the series of operations. More specifically, the cloud device-side transmitter 22 transmits the acceleration-related threshold determined by the threshold determiner 231 and the position information of the dangerous spot stored in the storage 24 to the terminal 1 .
The operations from step S201 to step S203 may be performed every predetermined period.

As described above, the traffic accident prevention system 101 according to the present embodiment detects dangerous behavior of a user using a threshold related to acceleration set for each user. With such a configuration, the traffic accident prevention system 101 according to the present embodiment can appropriately detect dangerous behavior of the user regardless of the physical ability of the individual user, and as a result, can prevent traffic accidents.

Furthermore, the traffic accident prevention system 101 according to the present embodiment detects dangerous behavior of users using positional information of dangerous places where traffic accidents are likely to occur. According to such a configuration, a warning can be notified to a user at a location where a traffic accident is likely to occur, and as a result, a traffic accident can be prevented.

(Second embodiment)
<Configuration of traffic accident prevention system>
Hereinafter, a traffic accident prevention system according to a second embodiment will be described in detail with reference to the drawings. First, the configuration of a traffic accident prevention system according to a second embodiment will be explained. FIG. 6 is a block diagram showing the configuration of a traffic accident prevention system according to the second embodiment.

A traffic accident prevention system 102 according to this embodiment includes a plurality of terminals 1 and a cloud device 2, and is connected to a statistical information providing system 103.
Although two terminals 1a and 1b are shown in FIG. 6, three or more terminals 1 are actually connected. However, the number of terminals 1 is not limited to three or more, and may be one or two.

The traffic accident prevention system 102 according to this embodiment notifies the user of a warning when the user takes a dangerous action. In the traffic accident prevention system 102 according to the present embodiment, the terminal 1 detects the user's acceleration, angular acceleration, geomagnetic information, and location information, and determines the acceleration threshold, the angular acceleration threshold, and the location information of the dangerous location. By referring to it, dangerous behavior of users can be detected.

In addition, in the traffic accident prevention system 102 according to the present embodiment, the cloud device 2 sets the acceleration and angular acceleration thresholds used when the terminal 1 detects the user's dangerous behavior. The determination is made for each user based on acceleration and geomagnetic information.

The statistical information providing system 103 is a system that provides the cloud device 2 with statistical information on location information of dangerous locations.
The statistical information providing system 103 may be, for example, a system provided by an administrative agency such as the police or a local government, a system provided by a company, or a system provided by both. It may be a system.
Further, the statistical information on the location information of the dangerous place may be, for example, open data provided as public information.

The statistical information providing system 103 may provide the cloud device 2 with location information of a point where a traffic accident has occurred, for example, as location information of a dangerous location. In addition, for example, the cloud device 2 may use location information such as a frozen location, a damaged location, or a construction site on the road as location information of a dangerous location. may be provided for.
The location information of the dangerous place may be any information as long as it can identify the location of the dangerous place. For example, it may be information indicating the latitude and longitude of the dangerous place, The information may be information indicating the address of the location, or may be information indicating the postal code of the dangerous location.

Further, the statistical information providing system 103 may acquire, from the cloud device 2, the positional information of the point where the user has taken a dangerous action. Then, the location information may be provided to, for example, an administrative agency such as the police or a local government as location information of a dangerous location.
Further, the statistical information providing system 103 may update the positional information of the dangerous place stored therein based on the positional information acquired from the cloud device 2.

In other words, the statistical information providing system 103 is a system that stores statistical information that records locations where traffic accidents are likely to occur, and even if it receives the location information transmitted from the cloud device 2 as updated data of the statistical information, good.
In other words, the cloud device 2 may transmit the location information of the point where the user took the dangerous action as update data of the statistical information to the statistical information providing system that stores the statistical information of the dangerous place. .

FIG. 7 is a block diagram showing the configuration of a terminal according to the second embodiment. The terminal 1 is a device carried by the user, and detects the user's acceleration, the user's angular acceleration, geomagnetic information, and position information, and detects the user's abnormal behavior based on these.

The terminal 1 may be realized, for example, by downloading an application for causing a smartphone, which has a function of detecting acceleration, angular acceleration, geomagnetic information, and position information, to perform a predetermined operation, which will be described later. It may also be realized by other devices.
The terminal 1 includes a detection section 11 , a terminal-side transmission section 12 , a terminal-side reception section 13 , a position information acquisition section 14 , a warning section 15 , and a control section 16 .

The detection unit 11 detects at least the acceleration of the user. Further, the detection unit 11 according to the present embodiment detects the angular acceleration of the user and further detects geomagnetic information. The detection unit 11 outputs the detected acceleration, angular acceleration, and geomagnetic information to the control unit 16.

More specifically, the detection unit 11 detects acceleration and angular acceleration applied to itself in three mutually orthogonal directions. That is, the detection unit 11 detects the acceleration and angular acceleration applied to itself as vector quantities. Then, the detected acceleration and angular acceleration applied to itself are output as the user's acceleration and angular acceleration.

Moreover, the geomagnetic information referred to here is information that specifies a direction specified based on geomagnetism and a vertical direction, that is, a direction parallel to the earth's gravitational force. The detection unit 11 detects geomagnetism in three mutually orthogonal directions in order to detect geomagnetic information.
That is, the detection unit 11 according to this embodiment is realized as a 9-axis sensor.

The location information acquisition unit 14 acquires the user's location information. More specifically, the position information acquisition unit 14 acquires the user's acceleration by acquiring its own position information. The location information acquisition unit 14 may acquire the user's location information using, for example, GPS (Global Positioning System). The location information acquisition unit 14 outputs the acquired user location information to the control unit 16.

The terminal-side transmitter 12 transmits various data to be described later to the cloud device 2. The terminal-side transmitting unit 12 acquires data to be transmitted to the cloud device 2 from the control unit 16, and transmits the acquired data to the cloud device 2 based on control from the control unit 16.

The terminal-side transmitter 12 transmits the acceleration, angular acceleration, and geomagnetic information detected by the detector 11 to the cloud device. More specifically, the terminal-side transmitter 12 acquires the acceleration, angular acceleration, and geomagnetic information detected by the detector 11 from the controller 16, and transmits the information to the cloud device 2 at the timing determined by the controller 16. Send.
Note that the terminal-side transmitter 12 may transmit a value indicating the magnitude of acceleration and a value indicating the magnitude of angular acceleration to the cloud device 2 instead of the acceleration, angular acceleration, and geomagnetic information.

However, the value indicating the magnitude of acceleration referred to here is a value obtained by performing various processing on the acceleration detected by the detection unit 11, and the acceleration caused by the user's actions becomes large. The value increases as the distance increases.

For example, the value indicating the magnitude of acceleration may be a value obtained by squaring the value indicating the magnitude of acceleration obtained by removing a component derived from the earth's gravity from the acceleration detected by the detection unit 11.
According to such a configuration, the value indicating the magnitude of acceleration can appropriately reflect the acceleration generated due to the user's actions. Moreover, according to such a configuration, since the value indicating the magnitude of acceleration is always 0 or more, processing in the terminal 1 and the cloud device 2 can be simplified.

Further, the value indicating the magnitude of the angular acceleration referred to here may be, for example, the value obtained by squaring the value of the magnitude of the angular acceleration detected by the detection unit 11. According to such a configuration, the value indicating the magnitude of the angular acceleration is always greater than or equal to 0, so that processing in the terminal 1 and the cloud device 2 can be simplified.

When the terminal 1 detects abnormal behavior of the user, the terminal side transmitting unit 12 acquires the location information of the point where the user took the abnormal behavior from the control unit 16, and transmits the information to the cloud device at the timing determined by the control unit 16. It may also be sent to 2.

The terminal-side receiving unit 13 receives various data, which will be described later, from the cloud device 2. The terminal-side receiving unit 13 outputs the data received from the cloud device 2 to the control unit 16.
The terminal-side receiving unit 13 receives from the cloud device 2 at least thresholds regarding acceleration and angular acceleration determined for each user based on the user's acceleration, and positional information of dangerous spots where traffic accidents are likely to occur. The terminal-side receiving unit 13 outputs the received acceleration and angular acceleration thresholds and position information of the dangerous area to the control unit 16 .

The warning unit 15 notifies the user of a warning based on the control of the control unit 16. More specifically, if the control unit 16 determines that the user is engaging in dangerous behavior, it notifies the user of a warning. The warning unit 15 may include, for example, a speaker that reproduces audio to the user, or may include a light that lights up.

When the warning unit 15 includes a speaker, the warning unit 15 notifies the user of a warning by reproducing audio data output from the control unit 16.
Further, when the warning unit 15 includes a light, the warning unit 15 acquires lighting data recording lighting time, color of light to be lit, blinking timing, etc. from the control unit 16, and based on the acquired lighting data, A warning may be notified to the user by turning on the light.

The control unit 16 controls the operation of the terminal 1. In addition, the control unit 16 determines whether the user is in danger based on the user's acceleration, the user's angular acceleration, geomagnetic information, location information, acceleration and angular acceleration thresholds, and location information of the dangerous location. Determine whether information is being collected.

FIG. 8 is a block diagram showing the configuration of a terminal according to the second embodiment. More specifically, FIG. 8 is a block diagram showing the configuration of the control section 16. The control unit 16 includes a determination unit 161, an operation control unit 162, and a terminal storage unit 163.

The determination unit 161 and the operation control unit 162 may be realized as functional blocks of an arithmetic unit (not shown). The arithmetic unit reads out software (computer program) from the terminal storage unit 163, which will be described later, and executes it, thereby executing various processes that will be described later. The calculation unit may be, for example, a microprocessor, an MPU (Micro Processing Unit), or a CPU (Central Processing Unit). The arithmetic unit may include multiple processors.
In other words, the control unit 16 according to this embodiment has a function as a computer.

The determination unit 161 uses the user's acceleration detected by the detection unit 11, the user's angular acceleration, the geomagnetic information, and the user's position information acquired by the position information acquisition unit 14 to be transmitted to the operation control unit. 162.
Further, the determination unit 161 acquires the acceleration and angular acceleration thresholds received by the terminal-side receiving unit 13 and the position information of the dangerous spot received by the terminal-side receiving unit 13 from the terminal storage unit 163.

The determination unit 161 determines whether the user is in danger based on the user's acceleration, the user's acceleration, the user's angular acceleration, the geomagnetic information, the acceleration and angular acceleration thresholds, and the location information of the dangerous place. Determine whether or not the action is taken.

More specifically, the determination unit 161 first calculates the magnitude of the acceleration caused by the user's own actions based on the detected acceleration and geomagnetic information.
Specifically, the determination unit 161 identifies a direction parallel to the gravitational acceleration based on geomagnetic information. Then, a vector parallel to the specified direction and having a magnitude corresponding to the gravitational acceleration is subtracted from the user's acceleration.

That is, the determination unit 161 calculates a value indicating the magnitude of the acceleration described above. Note that the determination unit 161 may calculate a value obtained by squaring the magnitude of the acceleration generated due to the user's own actions as the value indicating the magnitude of the acceleration described above.

The determination unit 161 may calculate a value obtained by squaring the detected angular acceleration as a value indicating the magnitude of the angular acceleration described above. Further, the determination unit 161 may use the detected angular acceleration value itself as a value indicating the magnitude of the angular acceleration.

Then, the determination unit 161 determines whether the value indicating the magnitude of acceleration is greater than or equal to the received acceleration threshold. Further, the determining unit 161 determines whether the value indicating the magnitude of the angular acceleration is greater than or equal to the received angular acceleration threshold. Furthermore, the determination unit 161 calculates the distance between the user's position and the position of the dangerous place from the acquired position information of the user and the received position information of the dangerous place, and determines that the distance is less than or equal to a predetermined distance. Determine whether or not.

For example, when the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance, and the value indicating the magnitude of acceleration is greater than or equal to the received threshold, It may be determined that the person is engaging in dangerous behavior.

The value indicating the magnitude of acceleration increases, for example, when the user suddenly starts running or stops suddenly. Therefore, with the above configuration, the terminal 1 according to the present embodiment can determine whether the user has taken a dangerous action such as suddenly running away or stopping suddenly in the vicinity of a dangerous spot.

However, the determination unit 161 determines that the user has taken a dangerous action if the value indicating the magnitude of acceleration is equal to or greater than the received threshold regardless of the distance between the user's position and the position of the dangerous spot. It may be determined that there is.
Further, the determination unit 161 determines that the user has taken a dangerous action when the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance, regardless of the value indicating the magnitude of acceleration. It may be determined that there is.

Further, the determination unit 161 determines, for example, when the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance, and the value indicating the magnitude of the angular acceleration is greater than or equal to the received threshold value. In addition, it may be determined that the user is engaging in dangerous behavior.

The value indicating the magnitude of angular acceleration increases, for example, when the user makes a sudden change of direction or falls. Therefore, according to the above configuration, the terminal 1 according to the present embodiment can determine whether the user has taken a dangerous action such as a sudden change in direction or a fall in the vicinity of a dangerous spot.

However, regardless of the distance between the user's position and the position of the dangerous spot, the determination unit 161 determines that if the value indicating the magnitude of angular acceleration is greater than or equal to the received threshold, the user takes a dangerous action. It may be determined that the Further, the determination unit 161 determines whether the user has taken a dangerous action if the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance, regardless of the value indicating the magnitude of the angular acceleration. It may be determined that the

Further, the determination unit 161 may determine whether the user is moving by walking or by a light vehicle such as a bicycle, based on a value indicating the magnitude of acceleration. Different thresholds for acceleration and angular acceleration may be used depending on whether the user is moving by walking or by a light vehicle.
In this case, the cloud device 2 determines the threshold values for acceleration and angular acceleration when the user is riding a light vehicle and the threshold values for acceleration and angular acceleration when the user is walking, and Send to 1.

The determination unit 161 outputs the determination result of whether or not the user is behaving abnormally to the operation control unit 162.
However, the determination unit 161 may output the determination result to the operation control unit 162 only when determining that the user is behaving abnormally. That is, when the determination unit 161 detects abnormal behavior of the user, it may notify the operation control unit 162 to that effect.

Note that the determination unit 161 may evaluate the value indicating the magnitude of acceleration in stages based on a plurality of thresholds related to acceleration. That is, the risk of the user's actions may be evaluated in stages.
In such a configuration, the determination unit 161 may output the evaluation result of the risk of the user's behavior to the operation control unit 162, which will be described later. Then, the operation control unit 162 may change the warning mode of the warning unit 15 based on the evaluation result of the risk of the user's behavior.

The operation control section 162 controls the operations of the detection section 11 , the terminal-side transmission section 12 , the terminal-side reception section 13 , the position information acquisition section 14 , and the warning section 15 .
The operation control unit 162 acquires the detected acceleration of the user from the detection unit 11 and outputs it to the determination unit 161 and the terminal-side transmission unit 12.

The operation control unit 162 determines the timing at which the terminal-side transmission unit 12 transmits the detected acceleration of the user, the angular acceleration of the user, and the geomagnetic information to the cloud device.
For example, the operation control unit 162 may control the terminal-side transmitting unit 12 so that the terminal-side transmitting unit 12 transmits the user's acceleration at predetermined intervals.
Further, the operation control unit 162 controls the terminal-side transmitting unit 12 so that the terminal-side transmitting unit 12 transmits the user's acceleration at the timing when the user instructs to communicate with the cloud device 2. Good too.

Note that the operation control unit 162 may acquire a value indicating the magnitude of acceleration and a value indicating the magnitude of angular acceleration from the determination unit 161 and output them to the terminal-side transmitting unit 12. Then, the terminal-side transmitting unit 12 may be controlled to transmit a value indicating the magnitude of acceleration and a value indicating the magnitude of angular acceleration to the cloud device 2.

The operation control unit 162 acquires the user's position information from the position information acquisition unit 14. The operation control unit 162 outputs the acquired user position information to the determination unit 161.
The operation control unit 162 acquires the received acceleration-related threshold, angular acceleration-related threshold, and position information of the dangerous location from the terminal-side receiving unit 13 . The operation control unit 162 outputs the acceleration threshold and the position information of the dangerous spot to the terminal storage unit 163.

The operation control unit 162 obtains from the determination unit 161 a determination result as to whether or not the user is engaging in dangerous behavior. However, as described above, the operation control unit 162 may be configured to receive a notification from the determination unit 161 when the determination unit 161 detects dangerous behavior of the user.

When the determination unit 161 detects a dangerous behavior of the user, the operation control unit 162 controls the warning unit 15 to notify the user of a warning.
For example, when the warning section 15 includes a speaker, the operation control section 162 outputs audio data including the content of the warning to the warning section 15, and causes the audio data to be played back.
Further, when the warning unit 15 includes a light, the operation control unit 162 outputs lighting data to the warning unit 15, and lights the warning unit 15 based on the lighting data.

Further, the operation control unit 162 may obtain from the determination unit 161 the evaluation results of the risk of the user's actions, which are evaluated in stages. In such a configuration, the operation control unit 162 may change the warning mode of the warning unit 15 based on the evaluation result.
For example, when the warning unit 15 includes a speaker, the operation control unit 162 outputs audio data including different warning contents to the warning unit 15 according to the evaluation result of the risk of the user's behavior, and The data may also be played back.

When the determination unit 161 detects dangerous behavior of the user, the operation control unit 162 acquires the location information of the point where the dangerous behavior was detected from the location information acquisition unit 14, and stores the location information in the terminal storage unit 163. May be stored. Further, the operation control unit 162 may output the position information to the terminal-side transmitting unit 12 and cause the terminal-side transmitting unit 12 to transmit the position information to the cloud device 2.

Further, if the operation control unit 162 has acquired the evaluation result of the risk of the user's behavior evaluated in stages from the determination unit 161, the operation control unit 162 transmits the evaluation result to the point where the dangerous behavior was detected. It may also be transmitted to the cloud device 2 together with the location information.

The terminal storage unit 163 is a storage device implemented using RAM (Random Access Memory), ROM (Read Only Memory), and the like. The terminal storage unit 163 stores programs for controlling the operation of the terminal 1. The arithmetic unit (not shown) described above executes the various processes described above by reading these programs from the terminal storage unit 163 and executing them.

The terminal storage unit 163 acquires the threshold values regarding the acceleration and angular acceleration received by the terminal-side receiving unit 13 and the position information of the dangerous spot from the operation control unit 162 and stores them.
The threshold values related to acceleration and angular acceleration and the position information of the dangerous area stored in the terminal storage unit 163 are used by the determination unit 161.

When the determination unit 161 detects dangerous behavior of the user, the terminal storage unit 163 acquires the location information of the point where the dangerous behavior was detected from the operation control unit 162, and stores it as the location information of the dangerous location. Good too.

In this way, the terminal storage unit 163 stores the thresholds related to acceleration and angular acceleration, and the position information of dangerous areas, so that the terminal 1 can monitor the user's needs without communicating with the cloud device 2. Dangerous behavior can be detected, and as a result, the time required to detect dangerous behavior of users can be shortened.

FIG. 9 is a block diagram showing the configuration of a cloud device according to the second embodiment. The cloud device according to this embodiment is a device that communicates with one or more terminals 1 and a statistical information providing system.

The cloud device 2 according to the present embodiment determines thresholds regarding acceleration and angular acceleration for each user based on the user's acceleration received from the terminal 1. Also, the location information of the dangerous area is transmitted to the terminal 1. Furthermore, the terminal 1 provides the statistical information providing system 103 with the location information of the point where the user's dangerous behavior was detected.
The cloud device 2 includes a cloud device-side receiving section 21, a cloud device-side transmitting section 22, a calculation section 23, and a storage section 24.

The cloud device side receiving unit 21 receives the user's acceleration, angular acceleration, and geomagnetic information detected by the terminal 1. The cloud device side receiving unit 21 outputs the received acceleration, angular acceleration, and geomagnetic information of the user to the calculation unit 23 .
However, instead of the user's acceleration, angular acceleration, and geomagnetic information detected by the terminal 1, the cloud device side receiving unit 21 receives the above-mentioned value indicating the magnitude of the user's acceleration and the user's angular acceleration. A value indicating the size may be received.

Furthermore, when the terminal 1 detects dangerous behavior, the cloud device side receiving unit 21 receives from the terminal 1 the position information of the point where the dangerous behavior was detected. The cloud device side receiving unit 21 outputs the position information to the calculation unit 23.
Further, the cloud device side receiving unit 21 receives position information of the dangerous area from the statistical information providing system 103. The cloud device side receiving unit 21 outputs the position information to the calculation unit 23.

The storage unit 24 is a storage device implemented using RAM, ROM, or the like. The storage unit 24 stores programs for controlling the operation of the cloud device 2. The arithmetic unit 23, which will be described later, reads these programs from the storage unit 24 and executes them, thereby executing various processes which will be described later.

The storage unit 24 stores position information of dangerous locations. The storage unit 24 outputs the stored position information of the dangerous place to the calculation unit 23.
Here, the location information of the dangerous spot stored in the storage unit 24 is a combination of the location information provided by the statistical information providing system 103 and the location information provided from the terminal 1.

The arithmetic unit 23 reads software (computer program) from the storage unit 24 and executes it, thereby executing various processes described below. The calculation unit 23 may be, for example, a microprocessor, MPU, or CPU. The calculation unit 23 may include a plurality of processors. That is, the cloud device 2 according to this embodiment has a function as a computer.

FIG. 10 is a block diagram showing the configuration of a cloud device according to the second embodiment. More specifically, FIG. 10 is a block diagram showing the configuration of the calculation section 23. The calculation unit 23 controls the operation of the cloud device 2. Furthermore, the calculation unit 23 determines an acceleration threshold for each user based on the user's acceleration detected by the terminal 1.
The calculation unit 23 includes a threshold value determination unit 231 and a communication control unit 232.

The threshold determination unit 231 acquires the user's acceleration, angular acceleration, and geomagnetic information from the communication control unit 232. Then, the threshold determination unit 231 determines a threshold related to acceleration and a threshold related to angular acceleration for each user based on the user's acceleration, angular acceleration, and geomagnetic information. The threshold determination unit 231 outputs the determined acceleration-related threshold and angular acceleration-related threshold to the communication control unit 232.

However, the threshold determining unit 231 obtains a value indicating the magnitude of the user's acceleration and a value indicating the magnitude of the user's angular acceleration, and based on these, determines the threshold related to acceleration and the threshold related to angular acceleration. It may be configured such that it is determined.

When acquiring the user's acceleration, angular acceleration, and geomagnetic information, the threshold determining unit 231 first determines a value indicating the magnitude of the user's acceleration and a value indicating the magnitude of the user's angular acceleration based on these. Calculate the value indicating the

The threshold determining unit 231 may calculate the average value and standard deviation of the values indicating the magnitude of the user's acceleration. The threshold determining unit 231 may then multiply the calculated standard deviation by a predetermined coefficient and determine the value added to the calculated average value as the threshold regarding acceleration.
Further, the threshold determining unit 231 may calculate the average value and standard deviation of the values indicating the magnitude of the user's angular acceleration. The threshold determining unit 231 may then multiply the calculated standard deviation by a predetermined coefficient and determine the value added to the calculated average value as the threshold regarding the angular acceleration.

According to such a configuration, the acceleration threshold value is a value that is appropriately adjusted to the physical ability of the individual user. Therefore, when the acceleration threshold calculated in this manner is used to detect a user's dangerous behavior, the user's abnormal behavior can be appropriately detected regardless of the user's individual physical ability.

Further, the threshold determining unit 231 may output a plurality of thresholds related to acceleration and thresholds related to angular acceleration. In this way, the terminal 1 can evaluate the risk of the user's actions in stages, as described above.

Further, the threshold determining unit 231 may determine an acceleration threshold when the user is walking and an acceleration threshold when the user is riding a light vehicle.
In this case, the threshold determination unit 231 determines the acceleration threshold when the user is walking, based on the acceleration detected during the period in which the terminal 1 determines that the user is walking.
Further, the threshold determination unit 231 determines the acceleration threshold when the user is riding in a light vehicle, based on the acceleration detected during the period in which the terminal 1 determines that the user is riding in a light vehicle. .

The communication control unit 232 controls the cloud device side receiving unit 21 and the cloud device side transmitting unit 22. When the cloud device side receiving unit 21 receives the user's acceleration, angular acceleration, and geomagnetic information from the terminal 1, the communication control unit 232 transmits the user's acceleration, angular acceleration, and geomagnetic information to the cloud device side receiving unit 21. , and outputs it to the threshold determining unit 231.

Further, when the cloud device-side receiving unit 21 receives the location information of the point where the dangerous behavior was detected from the terminal 1, the communication control unit 232 acquires the location information from the cloud device-side receiving unit 21 and stores it in the storage unit 24. and output it.

Furthermore, when the cloud device side receiving section 21 receives the position information of the dangerous place from the statistical information providing system 103, the communication control section 232 acquires the position information from the cloud device side receiving section 21 and stores it in the storage section 24. and output it.

The communication control unit 232 acquires a threshold related to acceleration and a threshold related to angular acceleration from the threshold determining unit 231. The communication control unit 232 outputs a threshold value related to acceleration and a threshold value related to angular acceleration to the cloud device side transmitting unit 22, and causes the cloud device side transmitting unit 22 to transmit the threshold value to the terminal 1.
Further, the communication control unit 232 acquires the position information of the dangerous place from the storage unit 24 and causes the position information to be transmitted to the terminal 1 and the statistical information providing system 103.

The communication control unit 232 determines the timing at which the cloud device side transmitting unit 22 transmits the acceleration-related threshold and the angular acceleration-related threshold to the terminal 1 .
Furthermore, the communication control unit 232 determines the timing at which the cloud device side transmitting unit 22 transmits the position information of the dangerous area to the terminal 1 and the statistical information providing system 103.

However, the location information of dangerous places sent to the statistical information providing system 103 includes only the location information detected by the terminal 1, that is, the location information of the point where the user's dangerous behavior was detected. Good too.

For example, the communication control unit 232 controls the cloud device side transmitter 22 so that the cloud device side transmitter 22 transmits a threshold value related to acceleration, a threshold value related to angular acceleration, and position information of a dangerous spot every predetermined period. 22 may be controlled.

Furthermore, the communication control unit 232 controls the cloud device side transmitter 22 so that the cloud device side transmitter 22 transmits the position information of the dangerous area to the statistical information providing system 103 every predetermined period. It's okay.

The cloud device side transmitting unit 22 transmits various data to the terminal 1 and the statistical information providing system 103 based on the control from the calculating unit 23.
The cloud device side transmitter 22 acquires the acceleration-related threshold, the angular acceleration-related threshold, and the position information of the dangerous spot from the calculation unit 23, and transmits them to the terminal 1 at the timing determined by the calculation unit 23.
Further, the cloud device side transmitting unit 22 acquires position information of the dangerous spot from the calculating unit 23, and transmits it to the statistical information providing system 103 at the timing determined by the calculating unit 23.

<Operation of traffic accident prevention system>
Next, the operation of the traffic accident prevention system according to the second embodiment, that is, the traffic accident prevention method, will be described in detail with reference to the drawings. In the following description, reference will be made to FIGS. 6 to 10 as appropriate.

11 and 12 are flowcharts showing the operation of the terminal according to the second embodiment. More specifically, FIG. 11 is a flowchart showing the operation of the terminal 1 according to the second embodiment to detect dangerous behavior of the user, and FIG. 12 is a flowchart showing the operation of the terminal 1 in step 304 of the flowchart shown in FIG. 1 is a flowchart showing an example of the operation of No. 1 in more detail.

First, the detection unit 11 detects the user's acceleration, the user's angular acceleration, and geomagnetism (step S301). Next, the location information acquisition unit 14 detects the user's location information (step S302). However, step S301 and step S302 may be executed in the reverse order or may be executed in parallel.

Next, the determination unit 161 calculates values indicating the magnitude of the user's acceleration and angular acceleration. More specifically, the determination unit 161 calculates values indicating the magnitudes of the user's acceleration and angular acceleration based on the user's acceleration, the user's angular acceleration, and the earth's magnetism detected in step S301.

Next, the determination unit 161 determines whether or not the user is engaging in dangerous behavior (step S304). More specifically, based on the values indicating the magnitude of the user's acceleration and angular acceleration calculated in step S303 and the threshold values regarding the acceleration and angular acceleration received from the cloud device 2, it is determined whether the user takes a dangerous action. Determine whether or not the
If the user is not taking any dangerous actions (S303 NO), the terminal 1 ends the series of operations.

If the user is taking a dangerous action (S303 YES), the warning unit 15 notifies the user of a warning (step S305). Finally, the terminal-side transmitter 12 transmits the location information of the point where the dangerous behavior was detected to the cloud device 2 (step S306), and the terminal 1 ends the series of operations.
The terminal 1 may continuously execute the series of operations shown in FIG.

FIG. 12 is a flowchart showing in more detail an example of the operation of the terminal 1 in step 304 of the flowchart shown in FIG. 11, that is, the operation of detecting abnormal behavior of the user.
In the operation shown in the flowchart of FIG. 12, first, the determination unit 161 determines whether the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance (step S341). .

If the distance between the user's position and the position of the dangerous spot is not less than the predetermined distance (step S341 NO), the determination unit 161 determines that the user is not engaging in dangerous behavior (step S344), and performs a series of steps. Finish the operation.

If the distance between the user's position and the position of the dangerous spot is less than or equal to the predetermined distance (step S341 YES), the determination unit 161 determines whether the value indicating the magnitude of acceleration is greater than or equal to the threshold regarding acceleration. is determined (step S342).

If the value indicating the magnitude of acceleration is equal to or greater than the threshold related to acceleration (step S342 YES), the determination unit 161 determines that the user is engaging in dangerous behavior (step S345), and ends the series of operations. .

If the value indicating the magnitude of acceleration is not greater than or equal to the threshold related to acceleration (step S342 NO), the determination unit 161 determines whether the value indicating the magnitude of angular acceleration is greater than or equal to the threshold related to angular acceleration ( Step S343).

If the value indicating the magnitude of angular acceleration is not greater than or equal to the threshold regarding angular acceleration (step S343 NO), the determination unit 161 determines that the user is not taking any dangerous actions (step S344), and ends the series of operations. do.

If the value indicating the magnitude of the angular acceleration is greater than or equal to the angular acceleration threshold (step S343 YES), the determination unit 161 determines that the user is taking a dangerous action (step S345), and performs a series of actions. finish.

In addition, in the flowchart shown in FIG. 12, the determination unit 161 determines that the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance, and that the magnitude of the user's acceleration or angular acceleration is If the value indicating is equal to or greater than the threshold value, it is determined that the user is engaging in dangerous behavior.

However, as described above, if the value indicating the magnitude of acceleration or angular acceleration is equal to or greater than the received threshold value, regardless of the distance between the user's position and the position of the dangerous spot, In addition, it may be determined that the user is engaging in dangerous behavior.
In addition, the determination unit 161 determines whether the user engages in dangerous behavior if the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance, regardless of the value indicating the magnitude of acceleration or angular acceleration. It may be determined that the
Further, the determination unit 161 determines that the distance between the user's position and the position of the dangerous spot is less than or equal to a predetermined distance, and the values indicating the magnitude of the user's acceleration and angular acceleration are greater than or equal to the threshold value. In this case, it may be determined that the user is engaging in dangerous behavior.

FIG. 13 is a flowchart showing the operation of the terminal according to the second embodiment. More specifically, it is a flowchart showing an operation in which the terminal 1 according to the second embodiment acquires various data used for detecting a user's dangerous behavior from the cloud device 2.

First, the detection unit 11 detects the user's acceleration, the user's angular acceleration, and geomagnetism (step S401). Next, the terminal-side transmitter 12 transmits the user's acceleration, the user's angular acceleration, and geomagnetism to the cloud device 2 (step S402). Finally, the terminal-side receiving unit 13 receives the acceleration threshold and the position information of the dangerous spot from the cloud device 2 (step S403), and the terminal 1 ends the series of operations.

However, step S401 may be replaced by step S301 in FIG. 11 described above. That is, the terminal-side transmitter 12 may transmit the user's acceleration, the user's angular acceleration, and geomagnetism acquired in step S301 to the cloud device 2.

In addition, in step S402, the terminal-side transmitting unit 12 transmits the user's acceleration, the user's angular acceleration, and geomagnetism to the cloud device 2, but instead, the user's acceleration and angular acceleration It is also possible to transmit a value indicating the size of .

The series of operations shown in FIG. 13 may be performed, for example, every predetermined period. Further, the series of operations shown in FIG. 13 may be executed, for example, at the timing when instructed to execute by the user.

FIG. 14 is a flowchart showing the operation of the cloud device according to the second embodiment. More specifically, it is a flowchart showing the operation of the cloud device 2 according to the second embodiment.

First, the cloud device side receiving unit 21 receives the user's acceleration, the user's angular acceleration, and geomagnetism from the terminal 1 (step S501). Next, the threshold determining unit 231 calculates values indicating the magnitude of the user's acceleration and angular acceleration (step S502).
Note that in step S501, the cloud device side receiving unit 21 may receive values indicating the magnitude of the user's acceleration and angular acceleration instead of the user's acceleration, the user's angular acceleration, and the geomagnetism. . In this case, step S502 is skipped.

Next, the cloud device side receiving unit 21 acquires position information of the dangerous area from the statistical information providing system 103 (step S503).
However, step S503 may be executed before step S501 and step S502, or may be executed in parallel.

Next, the threshold determining unit 231 determines a threshold for each user based on values indicating the magnitude of the user's acceleration and angular acceleration (step S504). Finally, the cloud device side transmitter 22 transmits the determined threshold and the position information of the dangerous area to the terminal 1 (step S505), and the cloud device 2 ends the series of operations.

The series of operations shown in FIG. 14 may be performed, for example, every predetermined period. Further, the series of operations shown in FIG. 14 may be executed, for example, at the timing when instructed to execute by the user.

As described above, in the traffic accident prevention system according to the present embodiment, the cloud device sets a threshold value for each user based on the detected acceleration of the user, the angular acceleration of the user, and the earth's magnetism. Then, the terminal 1 detects the user's dangerous behavior based on the threshold value.
With such a configuration, the traffic accident prevention system 102 according to the present embodiment can appropriately detect dangerous behavior of the user regardless of the physical ability of the individual user, and as a result, can prevent traffic accidents.

Furthermore, the traffic accident prevention system 102 according to the present embodiment detects dangerous behavior of users using positional information of dangerous places where traffic accidents are likely to occur. According to such a configuration, a warning can be notified to a user at a location where a traffic accident is likely to occur, and as a result, a traffic accident can be prevented.

Furthermore, the traffic accident prevention system according to the present embodiment can aggregate the location information of points where the terminal 1 detects dangerous behavior in the cloud device 2, and share it with the statistical information providing system as the location information of the dangerous location. According to such a configuration, locations where traffic accidents are likely to occur can be shared with administrative agencies, general companies, etc., and as a result, it becomes easier to improve the situation at locations where traffic accidents are likely to occur. .

(Third embodiment)
<Configuration of traffic accident prevention system>
Hereinafter, a traffic accident prevention system according to a third embodiment will be described in detail with reference to the drawings. The traffic accident prevention system according to the third embodiment is an application example of the traffic accident prevention system according to the second embodiment.

FIG. 15 is a block diagram showing the configuration of a terminal according to the third embodiment. The traffic accident prevention system according to the third embodiment differs from the traffic accident prevention system according to the second embodiment in that it includes a sensor attachment section 17.

The sensor attachment section 17 is connected to various sensors that detect external factors that can be used to detect dangerous behavior of users. The sensor attached to the sensor attachment section 17 outputs the detected external factor to the control section 16. The control unit 16, more specifically, the determination unit 161 detects the user's dangerous behavior based on external factors detected by the attached sensor.

The sensor attached to the sensor attachment part 17 may be, for example, an atmospheric pressure sensor that detects atmospheric pressure.
In this case, the terminal 1 may determine whether the user is ascending a slope or descending a slope based on the detected atmospheric pressure. Different threshold values may be used to detect dangerous behavior of the user depending on whether the user is going up a hill or going down a hill.
Furthermore, the terminal 1 may determine whether the user has fallen based on the detected atmospheric pressure. In this case, the terminal 1 may determine that the user has fallen if the increase in atmospheric pressure per predetermined time is equal to or greater than a predetermined threshold.

The sensor attached to the sensor attachment part 17 may be, for example, an air temperature sensor that detects the air temperature.
In this case, the terminal 1 may determine whether there is a possibility that the road surface is frozen based on the detected temperature. Different threshold values may be used to detect dangerous behavior of the user depending on whether the road surface may be frozen or not.

According to such a configuration, the criteria for determining dangerous behavior can be changed according to the user's wishes, and the dangerous behavior of the user can be detected more appropriately.

(Other embodiments)
In the traffic accident prevention systems according to the second and third embodiments, geomagnetic information is used to calculate the value indicating the magnitude of acceleration. However, the traffic accident prevention system according to the present disclosure may use geomagnetic information to detect dangerous behavior based on a change in the user's orientation.
For example, the traffic accident prevention system according to the present disclosure detects the user's orientation based on geomagnetic information, and if the change in the user's orientation in a predetermined time is greater than or equal to a predetermined threshold, the user may engage in dangerous behavior. It may be determined that the
In addition, the traffic accident prevention system according to the present disclosure detects the user's orientation based on geomagnetic information, and if the user's vertical inclination exceeds a predetermined value, the user engages in dangerous behavior. It may be determined that it has been taken.
With such a configuration, the traffic accident prevention system according to the present disclosure can appropriately detect dangerous actions of users, such as sudden direction changes and falls.

Further, the traffic accident prevention system according to the present disclosure may detect the speed of the user based on the acquired position information of the user. Then, for example, if the user's speed is equal to or higher than a predetermined threshold, it may be determined that the user is taking a dangerous action.
According to such a configuration, the traffic accident prevention system according to the present disclosure can suppress the speed of the user, and as a result, can suppress the occurrence of traffic accidents.

Note that in this specification, a program includes a group of instructions (or software code) for causing a computer to perform one or more functions described in the embodiments when read into a computer. The program may be stored on a non-transitory computer readable medium or a tangible storage medium. By way of example and not limitation, computer readable or tangible storage media may include random-access memory (RAM), read-only memory (ROM), flash memory, solid-state drive (SSD) or other memory technology, CD - Including ROM, digital versatile disc (DVD), Blu-ray disc or other optical disc storage, magnetic cassette, magnetic tape, magnetic disc storage or other magnetic storage device. The program may be transmitted on a transitory computer-readable medium or a communication medium. By way of example and not limitation, transitory computer-readable or communication media includes electrical, optical, acoustic, or other forms of propagating signals.

Although the present disclosure has been described in accordance with the above embodiments, the present disclosure is not limited only to the configuration of the above embodiments, and a person skilled in the art will understand that this disclosure is not limited to the configuration of the above embodiments. Of course, it includes various modifications, modifications, and combinations.

Part or all of the above embodiments may be described as in the following additional notes, but are not limited to the following.
(Additional note 1)
A traffic accident prevention system comprising a terminal and a cloud device,
The terminal is
a detection unit that detects at least the acceleration of the user;
a terminal-side transmitter that transmits the acceleration detected by the detector or a value indicating the magnitude of the acceleration to a cloud device;
a location information acquisition unit that acquires location information of the user;
a terminal-side receiving unit that receives from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
A determining unit that determines whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location. and,
a warning unit that notifies the user of a warning when the determination unit determines that the user is engaging in dangerous behavior;
The cloud device
a cloud device-side receiving unit that receives at least the acceleration detected by the terminal or a value indicating the magnitude of the acceleration;
a threshold determining unit that determines a threshold regarding the acceleration for each user based on the received acceleration of the user;
a storage unit that stores location information of the dangerous location;
a cloud device-side transmitting unit that transmits the threshold determined by the threshold determining unit and position information of a dangerous spot stored in the storage unit to the terminal;
Traffic accident prevention system.
(Additional note 2)
The detection unit further detects the angular acceleration of the user,
The terminal side transmitting unit further transmits the angular acceleration detected by the detecting unit or a value indicating the magnitude of the angular acceleration to the cloud device,
The terminal-side receiving unit further receives, from the cloud device, a threshold related to the angular acceleration of the user determined based on the angular acceleration of the user,
The determination unit determines whether the user is engaging in dangerous behavior based on the angular acceleration of the user and a threshold related to the angular acceleration.
Traffic accident prevention system described in Appendix 1.
(Appendix 3)
The detection unit further detects geomagnetism,
A value indicating the magnitude of the acceleration of the user is calculated based on the acceleration of the user and the geomagnetism.
The traffic accident prevention system described in Supplementary Note 1 or 2.
(Additional note 4)
the determination unit evaluates the risk of the user's behavior based on thresholds related to acceleration of the plurality of users;
The content of the warning notified by the warning unit is changed according to the risk of the user's behavior evaluated by the determination unit.
The traffic accident prevention system according to any one of Supplementary Notes 1 to 3.
(Appendix 5)
The cloud device transmits the threshold value regarding the acceleration and the position information of the dangerous spot to the terminal at every predetermined period.
The traffic accident prevention system according to any one of Supplementary Notes 1 to 4.
(Appendix 6)
When the distance between the position of the user and the position of the dangerous spot is less than or equal to a predetermined distance, and the value indicating the magnitude of the acceleration of the user is greater than or equal to the threshold related to the acceleration, the terminal determines that the user is engaging in dangerous behavior;
The traffic accident prevention system according to any one of Supplementary Notes 1 to 5.
(Appendix 7)
The cloud device determines a threshold value regarding the acceleration when the user is riding a light vehicle and a threshold value regarding the acceleration when the user is walking, and transmits them to the terminal. ,
The traffic accident prevention system according to any one of Supplementary Notes 1 to 6.
(Appendix 8)
The terminal further includes a sensor attachment part connected to various sensors that detect external factors,
The determination unit determines whether or not the user is engaging in dangerous behavior based on an external factor detected by a sensor connected to the sensor attachment unit.
The traffic accident prevention system according to any one of Supplementary Notes 1 to 7.
(Appendix 9)
The sensor attachment part and an atmospheric pressure sensor that detects atmospheric pressure are connected,
The determination unit determines whether the user is engaging in dangerous behavior based on the atmospheric pressure detected by the atmospheric pressure sensor.
The traffic accident prevention system according to any one of Supplementary Notes 1 to 8.
(Appendix 10)
The sensor attachment part and a temperature sensor that detects temperature are connected,
The determination unit determines whether the user is engaging in dangerous behavior based on the temperature detected by the temperature sensor.
The traffic accident prevention system according to any one of Supplementary Notes 1 to 9.
(Appendix 11)
The cloud device transmits the location information of the point where the user took the dangerous action as updated data of the statistical information to a statistical information providing system that stores the statistical information of the dangerous place.
The traffic accident prevention system according to any one of Supplementary Notes 1 to 10.
(Appendix 12)
A data structure in which positional information of a dangerous place is updated in a statistical information providing system that stores statistical information of a dangerous place based on the positional information transmitted from the cloud device according to appendix 11 to the statistical information system.
(Appendix 13)
An information providing system that maintains the data structure set forth in Appendix 12.
(Appendix 14)
The terminal is
Detects the user's acceleration,
Sends the detected acceleration to the cloud device,
Obtain user location information,
receiving from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
Determining whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location;
If it is determined that the user is engaging in dangerous behavior, a warning is sent to the user;
The cloud device
receiving the user's acceleration detected by the terminal;
determining a threshold regarding the acceleration for each user based on the received acceleration;
Memorizes location information of dangerous areas where traffic accidents are likely to occur,
transmitting the determined threshold value and the location information of the dangerous place to be stored to the terminal;
How to prevent traffic accidents.
(Appendix 15)
a detection unit that detects acceleration of the user;
a terminal-side transmitter that transmits the acceleration detected by the detector to a cloud device;
a location information acquisition unit that acquires location information of the user;
a terminal-side receiving unit that receives from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
A determining unit that determines whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location. and,
a warning unit that notifies the user of a warning when the determination unit determines that the user is engaging in dangerous behavior;
terminal.
(Appendix 16)
Detects the user's acceleration,
Sends the detected acceleration to the cloud device,
Obtain the location information of the user,
receiving from the cloud device at least a threshold of the user's acceleration determined based on the user's acceleration and position information of a dangerous spot;
Determining whether the user is taking a dangerous action based on the acceleration of the user, the location information of the user, the threshold of the acceleration, and the location information of the dangerous location,
If it is determined that the user is engaging in dangerous behavior, notify the user of a warning and cause the computer to execute a process;
Traffic accident prevention program.
(Appendix 17)
a cloud device-side receiving unit that receives the user's acceleration detected by the terminal;
a threshold determination unit that determines an acceleration threshold for each user based on the received acceleration;
a memory unit that stores location information of dangerous spots where traffic accidents are likely to occur;
a cloud device-side transmitting unit that transmits the threshold determined by the threshold determining unit and position information of a dangerous spot stored in the storage unit to the terminal;
Cloud device.
(Appendix 18)
Receives the user's acceleration from the terminal,
Determine the acceleration threshold for each user based on the received acceleration,
Memorizes location information of dangerous areas where traffic accidents are likely to occur,
causing a computer to execute a process of transmitting the determined threshold value and the stored position information of the dangerous spot to the terminal;
Traffic accident prevention program.

REFERENCE SIGNS LIST 1 Terminal 11 Detection unit 12 Terminal side transmission unit 13 Terminal side reception unit 14 Position information acquisition unit 15 Warning unit 16 Control unit 17 Sensor attachment unit 161 Determination unit 162 Operation control unit 163 Terminal storage unit 2 Cloud device 21 Cloud device side reception unit 22 Cloud device side transmission unit 23 Calculation unit 231 Threshold value determination unit 232 Communication control unit 24 Storage unit 101, 102 Traffic accident prevention system 103 Statistical information provision system

Claims (11)

A traffic accident prevention system comprising a terminal and a cloud device,
The terminal is
a detection unit that detects at least the acceleration of the user;
a terminal-side transmitter that transmits the acceleration detected by the detector or a value indicating the magnitude of the acceleration to a cloud device;
a location information acquisition unit that acquires location information of the user;
a terminal-side receiving unit that receives from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
A determining unit that determines whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location. and,
a warning unit that notifies the user of a warning when the determination unit determines that the user is engaging in dangerous behavior;
The cloud device
a cloud device-side receiving unit that receives at least the acceleration detected by the terminal or a value indicating the magnitude of the acceleration;
a threshold determining unit that determines a threshold regarding the acceleration for each user based on the received acceleration of the user;
a storage unit that stores location information of the dangerous location;
a cloud device-side transmitting unit that transmits the threshold determined by the threshold determining unit and position information of a dangerous spot stored in the storage unit to the terminal;
Traffic accident prevention system. The cloud device transmits the threshold value regarding the acceleration and the position information of the dangerous spot to the terminal at every predetermined period.
The traffic accident prevention system according to claim 1. When the distance between the position of the user and the position of the dangerous spot is less than or equal to a predetermined distance, and the value indicating the magnitude of the acceleration of the user is greater than or equal to the threshold related to the acceleration, the terminal determines that the user is engaging in dangerous behavior;
The traffic accident prevention system according to claim 1 or 2. The cloud device determines a threshold value regarding the acceleration when the user is riding a light vehicle and a threshold value regarding the acceleration when the user is walking, and transmits them to the terminal. ,
The traffic accident prevention system according to claim 1 or 2. The terminal further includes a sensor attachment part connected to various sensors that detect external factors,
The determination unit determines whether or not the user is engaging in dangerous behavior based on an external factor detected by a sensor connected to the sensor attachment unit.
The traffic accident prevention system according to claim 1 or 2. The cloud device transmits the location information of the point where the user took the dangerous action as updated data of the statistical information to a statistical information providing system that stores the statistical information of the dangerous place.
The traffic accident prevention system according to claim 1 or 2. The terminal is
detect at least the user's acceleration;
Send the detected acceleration or a value indicating the magnitude of the acceleration to the cloud device,
Obtaining the location information of the user,
receiving from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
Determining whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location;
If it is determined that the user is engaging in dangerous behavior, a warning is sent to the user;
The cloud device
receiving at least the acceleration of the user detected by the terminal;
determining a threshold regarding the acceleration for each user based on the received acceleration of the user;
Memorize the location information of the dangerous place,
transmitting the determined threshold value and the location information of the dangerous place to be stored to the terminal;
How to prevent traffic accidents. a detection unit that detects at least the acceleration of the user;
a terminal-side transmitter that transmits the acceleration detected by the detector or a value indicating the magnitude of the acceleration to a cloud device;
a location information acquisition unit that acquires location information of the user;
a terminal-side receiving unit that receives from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
A determining unit that determines whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location. and,
a warning unit that notifies the user of a warning when the determination unit determines that the user is engaging in dangerous behavior;
terminal. detect at least the user's acceleration;
Send the detected acceleration or a value indicating the magnitude of the acceleration to the cloud device,
Obtaining the location information of the user,
receiving from the cloud device at least a threshold related to the user's acceleration determined based on the user's acceleration and position information of a dangerous place where a traffic accident is likely to occur;
Determining whether or not the user is engaging in dangerous behavior based on the acceleration of the user, the location information of the user, the threshold related to the acceleration, and the location information of the dangerous location;
If it is determined that the user is engaging in dangerous behavior, the computer notifies the user of a warning and causes the computer to execute a process;
Traffic accident prevention program. a cloud device-side receiving unit that receives at least the user's acceleration detected by the terminal;
a threshold determining unit that determines a threshold regarding the acceleration for each user based on the received acceleration of the user;
a storage unit that stores location information of the dangerous location;
a cloud device-side transmitting unit that transmits the threshold determined by the threshold determining unit and position information of a dangerous spot stored in the storage unit to the terminal;
Cloud device. receive at least the user's acceleration detected by the terminal;
determining a threshold regarding the acceleration for each user based on the received acceleration of the user;
Memorizes location information of dangerous areas,
transmitting the determined threshold value and location information of the dangerous area to the terminal; causing a computer to execute a process;
Traffic accident prevention program.

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