JP7251087B2 - Management device and recording system - Google Patents

Description

The present disclosure relates to a management device and recording system.

The drive recorder records the surroundings of the vehicle to generate and store images. Patent Literature 1 describes changing recording conditions of a drive recorder based on driving speed, driving distance during recording, information obtained from the vehicle side, and the like.

JP 2011-28651 A

For some reason, the driver's driving skill and driving characteristics may differ from normal times. In that case, the probability of a traffic accident or the like occurring increases. Therefore, when the driver's driving skill and driving characteristics are different from normal driving, the image obtained by recording by the drive recorder becomes more important.

One aspect of the present disclosure provides a management device and recording system that can increase the amount of information in an image obtained by recording with a drive recorder when the driving skill or driving characteristics of the driver are different from normal times. .

One aspect of the present disclosure is a management device capable of communicating with a drive recorder mounted on a vehicle, wherein vehicle information representing the state of the vehicle and driving information representing the behavior of the driver of the vehicle are received from the drive recorder. calculating a driver index representing at least one of driving skill and driving characteristics of the driver based on a vehicle information acquisition unit configured to acquire the vehicle information and the driving information acquired by the vehicle information acquisition unit; and an index determination unit configured to determine whether a difference between the driver index calculated by the index calculation unit and a preset reference value is equal to or greater than a threshold value. and an instruction unit configured to instruct the drive recorder of a recording condition, wherein the instruction unit determines that the difference is greater than or equal to the threshold if the indicator determination unit determines that the difference is equal to or greater than the threshold. The management device is configured to instruct the drive recorder of the recording condition under which the amount of information of an image obtained by recording becomes larger than when the index determination unit determines that it is less than the threshold value.

According to the management device, which is one aspect of the present disclosure, it is possible to increase the amount of information in the image obtained by recording with the drive recorder when the driving skill and driving characteristics of the driver are different from normal times.

1 is a block diagram showing the configuration of a recording system 1; FIG. 2 is a block diagram showing a functional configuration of a control section 11; FIG. 3 is a block diagram showing a functional configuration of a control unit 37; FIG. 5 is a flow chart showing processing executed by a drive recorder 5-i. 4 is a flowchart showing processing executed by the management device 3; FIG. 7 is an explanatory diagram showing the positional relationship between a vehicle 59 requiring caution, a range 61, and a vehicle 7-i.

Exemplary embodiments of the present disclosure are described with reference to the drawings.
<First Embodiment>
1. Configuration of Recording System 1 (1) Overall Configuration of Recording System 1 The entire recording system 1 will be described with reference to FIG. As shown in FIG. 1, the recording system 1 includes a management device 3 and N drive recorders 5-1 to 5-N. N is a natural number of 1 or more. N is preferably 2 or more. The management device 3 is fixedly installed. Management device 3 is connected to Internet network 6 .

The N drive recorders 5-1 to 5-N have similar configurations and can perform similar processing. The drive recorder 5-i is mounted on the vehicle 7-i. i is any natural number from 1 to N; The management device 3 and the N drive recorders 5-1 to 5-N can communicate via a communication network 9. FIG.

(2) Configuration of Management Apparatus 3 The configuration of the management apparatus 3 will be described with reference to FIGS. 1 and 2. FIG. As shown in FIG. 1 , the management device 3 includes a control section 11 , a storage section 13 and a communication device 15 . The control unit 11 includes a microcomputer having a CPU 17 and a semiconductor memory such as RAM or ROM (hereinafter referred to as memory 19). Each function of the control unit 11 is realized by the CPU 17 executing a program stored in a non-transitional substantive recording medium. In this example, the memory 19 corresponds to a non-transitional substantive recording medium storing programs. Also, by executing this program, a method corresponding to the program is executed. Note that the control unit 11 may be provided with one microcomputer, or may be provided with a plurality of microcomputers.

As shown in FIG. 2, the control section 11 includes a vehicle information acquisition unit 21, an index calculation unit 23, an index determination unit 25, an instruction unit 27, a range determination unit 29, a peripheral information acquisition unit 31, a danger and a state determination unit 33 .

The method of realizing the function of each unit included in the control unit 11 is not limited to software, and some or all of the functions may be realized using one or more pieces of hardware. For example, when the above functions are realized by an electronic circuit that is hardware, the electronic circuit may be realized by a digital circuit, an analog circuit, or a combination thereof.

The storage unit 13 can store various types of information. The communication device 15 can communicate with each of the N drive recorders 5-1 to 5-N via the communication network 9. FIG.
(3) Configuration of Drive Recorder 5-1 The configuration of the drive recorder 5-1 will be described with reference to FIGS. 1 and 3. FIG. Drive recorders 5-2 to 5-N also have the same configuration. As shown in FIG. 1, the drive recorder 5-1 includes a control section 37, a camera 39, a sensor group 41, a storage section 43, and a communication device 45.

The control unit 37 includes a microcomputer having a CPU 47 and a semiconductor memory such as RAM or ROM (hereinafter referred to as memory 49). Each function of the control unit 37 is realized by the CPU 47 executing a program stored in a non-transitional substantive recording medium. In this example, the memory 49 corresponds to a non-transitional substantive recording medium storing programs. Also, by executing this program, a method corresponding to the program is executed. Note that the control unit 37 may include one microcomputer, or may include a plurality of microcomputers.

The control section 37 includes an information creation unit 51, an information transmission unit 53, an instruction acquisition unit 55, and a recording condition setting unit 57, as shown in FIG. The method of realizing the function of each unit included in the control unit 37 is not limited to software, and some or all of the functions may be realized using one or more pieces of hardware. For example, when the above functions are realized by an electronic circuit that is hardware, the electronic circuit may be realized by a digital circuit, an analog circuit, or a combination thereof.

The camera 39 records the surroundings of the vehicle 7-1 equipped with the drive recorder 5-1 to generate an image. The image is a moving image. The camera 39 starts recording with a predetermined trigger, and ends recording when a predetermined time elapses from the start of recording. As a trigger, for example, the G value detected by the sensor group 41 exceeds a threshold.

The sensor group 41 detects the state of the vehicle and the behavior of the driver. The vehicle state includes, for example, the vehicle position, vehicle speed, G value, acceleration/deceleration, yawing, rolling, pitching, staggering, date and time when the vehicle state was detected, and the like. The behavior of the driver includes, for example, accelerator work, handling, turn signal lighting timing, brake timing, shift up timing, behavior during backing, movement of the driver's line of sight, behavior of the driver, and the like. The driver's behavior includes, for example, tweeting.

The storage unit 43 can store images generated by the camera 39, detection results of the sensor group 41, and the like. The communication device 45 can communicate with the management device 3 via the communication network 9 .
2. Processing Executed by Drive Recorder 5-i Processing that is repeatedly executed by the drive recorder 5-i at predetermined time intervals will be described with reference to FIG. i is any natural number from 1 to N; In step 1, the information creation unit 51 creates vehicle information and driving information. The vehicle information is information representing the state of the vehicle detected by the sensor group 41 . The driving information is information representing the behavior of the driver detected by the sensor group 41 .

In step 2, the information transmission unit 53 transmits the vehicle information and driving information created in step 1 and the identification information of the vehicle 7-i to the management device 3 using the communication device 45. FIG.
In step 3, the instruction acquisition unit 55 determines whether or not the communication device 45 has received the recording condition instruction. The recording condition instruction is information transmitted by the management device 3 in step 20 or step 21, which will be described later. The recording condition instruction is information for instructing recording conditions when the drive recorder 5-i performs recording. Contents of the recording conditions include, for example, image resolution, frame rate, recording time for one recording, and the like. As recording condition instructions, there are a first recording condition instruction and a second recording condition instruction. The recording condition instructed by the second recording condition instruction (hereinafter referred to as the second recording condition) is compared to the recording condition instructed by the first recording condition instruction (hereinafter referred to as the first recording condition). This is a recording condition that increases the amount of information in an image obtained by recording.

For example, the relationship between the second recording condition and the first recording condition corresponds to one or more selected from R1 to R3 below.
R1: The resolution of the image is higher under the second recording condition than under the first recording condition.

R2: The second recording condition has a higher frame rate than the first recording condition.
R3: The recording time for one recording is longer under the second recording condition than under the first recording condition.
When the communication device 45 receives the recording condition instruction, the instruction acquisition unit 55 acquires the recording condition. If the communication device 45 receives the recording condition instruction, the process proceeds to step 4 . If the communication device 45 has not received the recording condition instruction, the process proceeds to step 5.

In step 4, the recording condition setting unit 57 sets recording conditions for the drive recorder 5-i based on the recording condition instruction received in step 3 above. For example, if the first recording condition instruction is received in step 3, the recording condition setting unit 57 sets the first recording condition. Also, when the second recording condition instruction is received in step 3, the recording condition setting unit 57 sets the second recording condition.

In step 5, the recording condition setting unit 57 maintains the recording conditions of the drive recorder 5-i without change.
3. Processing Performed by Management Apparatus 3 Processing repeatedly performed by the management apparatus 3 at predetermined time intervals will be described with reference to FIGS. 5 and 6. FIG. In step 11 of FIG. 5, the vehicle information acquisition unit 21 determines whether or not the communication device 15 has received vehicle information, driving information, and vehicle identification information. The vehicle information, driving information, and vehicle identification information are the information transmitted by the drive recorder 5-i in step 2 above.

When the communication device 15 receives vehicle information, driving information, and vehicle identification information, the vehicle information acquisition unit 21 acquires the information. If the communication device 15 has received vehicle information, driving information, and vehicle identification information, the process proceeds to step 12; otherwise, the process proceeds to step 17.

At step 12 , the index calculation unit 23 calculates a first driver index and a second driver index based on the vehicle information and driving information received at step 11 . The first driver index is an index representing the driving skill of the driver. The higher the driving skill of the driver, the higher the first driver index. The second driver index is an index representing characteristics of the driver's driving. A known method can be appropriately selected and used for calculating the first driver index and the second driver index.

In step 13, the index determination unit 25 compares the first driver index calculated in step 12 with a preset first reference value. Then, based on the comparison result, the index determination unit 25 sets the condition that the first driver index is smaller than the first reference value and the difference between the two is equal to or greater than a preset threshold value (hereinafter referred to as a lack of skill condition). is established in the vehicle 7-i. If the vehicle 7-i satisfies the lack of skill condition, the process proceeds to step 21 . If the lack of skill condition is not satisfied in the vehicle 7-i, the process proceeds to step .

In step 14, the index determination unit 25 compares the second driver index calculated in step 12 with a preset second reference value. Then, based on the comparison result, the indicator determination unit 25 determines that the condition that the difference between the second driver indicator and the second reference value is equal to or greater than a preset threshold value (hereinafter referred to as a characteristic change condition) is set to the vehicle 7-i. It is determined whether or not it is established in If the vehicle 7-i satisfies the characteristic change condition, the process proceeds to step 21; If the vehicle 7-i does not satisfy the characteristic change condition, the process proceeds to step 15. FIG.

At step 15 , the peripheral information acquisition unit 31 acquires peripheral information via the Internet network 6 . Surrounding information is information representing the situation around the vehicle 7-i. Surrounding conditions, for example, surrounding weather, location of dangerous area, time period when dangerous area occurs, location of traffic jam, time period when traffic congestion occurs, location of event occurrence, time period of event occurrence, location of dangerous vehicle etc. Dangerous areas include, for example, community roads, school areas, accident-prone roads, and mountain roads. Examples of events include a fireworks display.

In step 16, based on the vehicle information received in step 11 and the surrounding information acquired in step 15, the dangerous state determination unit 33 determines whether the vehicle 7-i is in a dangerous state. Examples of the vehicle 7-i in a dangerous state include the following cases.

Case 1: A case in which it was found that the vehicle 7-i was traveling at a speed of 60 km/h or more on an accident-prone road based on the position and speed of the vehicle 7-i included in the vehicle information and the surrounding information.
Case 2: Based on the position, vehicle speed, date and time of vehicle 7-i included in the vehicle information, and surrounding information, vehicle 7-i moves through the school commuting area from 7:00 a.m. to 9:00 a.m. , A case where it was found that the vehicle was traveling at a speed of 60 km/h or more during that time period.

Case 3: Based on the vehicle 7-i's position, vehicle speed, date and time included in the vehicle information, and the surrounding information, the vehicle 7-i is the site of a fireworks display that will be held from 7:00 p.m. to 9:00 p.m. A case where it was found that the vehicle was traveling at a speed of 60 km/h or more in the vicinity of the time zone.

If it is determined that the vehicle 7-i is in a dangerous state, the process proceeds to step 21; If it is determined that the vehicle 7-i is not in a dangerous state, the process proceeds to step 17.
At step 17, the range determination unit 29 determines whether or not there is a vehicle requiring caution. The vehicle requiring attention is a vehicle among the vehicles 7-1 to 7-N, excluding the vehicle 7-i, which is judged to satisfy the insufficient skill condition or the characteristic change condition. If there is a vehicle that requires caution, the process proceeds to step 18 . If there is no vehicle requiring caution, the process proceeds to step 20 .

In step 18, as shown in FIG. 6, the range determination unit 29 sets a range 61 based on the position of the vehicle 59 requiring caution. The range 61 is, for example, a range centered on the position of the vehicle 59 requiring caution and having a certain size.

Range determination unit 29 then determines whether vehicle 7-i exists within range 61 or not. If the vehicle 7-i exists within the range 61, the process proceeds to step 21; If the vehicle 7-i does not exist within the range 61, the process proceeds to step 20;

Note that the range determination unit 29 corresponds to the setting range determination unit and the dangerous range determination unit. When the skill shortage condition is satisfied in the caution required vehicle 59, the range 61 corresponds to the setting range. If the characteristic change condition is satisfied in the caution vehicle 59, the range 61 corresponds to the dangerous range. The caution-required vehicle 59 corresponds to the first vehicle, and the vehicle 7-i corresponds to the second vehicle.

At step 20, the instruction unit 27 sends a first recording condition instruction to the drive recorder 5-i.
At step 21, the instruction unit 27 sends a second recording condition instruction to the drive recorder 5-i.

4. Effects of Management Apparatus 3 and Recording System 1 (1A) If the vehicle 7-i satisfies the skill shortage condition or the characteristic change condition, there is a high probability that an accident or the like involving the vehicle 7-i will occur. Therefore, when the lack of skill condition or the characteristic change condition is established in the vehicle 7-i, there is a strong need to increase the information amount of the image obtained by recording by the drive recorder 5-i (hereinafter referred to as the drive recording information amount).

The recording system 1 sets the recording condition of the drive recorder 5-i as the second recording condition when the lack of skill condition or the characteristic change condition is established in the vehicle 7-i. As a result, the recording system 1 can increase the drive recorder information amount of the drive recorder 5-i when the lack of skill condition or the characteristic change condition is satisfied in the vehicle 7-i.

(1B) When the vehicle 7-i exists within the range 61 based on the position of the vehicle 59 requiring caution, there is a high probability that an accident or the like involving the vehicle 7-i will occur. Therefore, when the vehicle 7-i exists within the range 61, it is highly necessary to increase the drive recorder information amount of the drive recorder 5-i.

When the vehicle 7-i exists within the range 61, the recording system 1 sets the recording condition of the drive recorder 5-i as the second recording condition. As a result, when the vehicle 7-i is present within the range 61, the recording system 1 can increase the amount of drive-recording information of the drive recorder 5-i.

(1C) When the vehicle 7-i is in a dangerous state, there is a high probability that an accident involving the vehicle 7-i will occur. Therefore, when the vehicle 7-i is in a dangerous state, it is highly necessary to increase the drive recorder information amount of the drive recorder 5-i.

The recording system 1 sets the recording condition of the drive recorder 5-i to the second recording condition when the vehicle 7-i is in a dangerous state. As a result, when the vehicle 7-i is in a dangerous state, the recording system 1 can increase the amount of drive-recording information of the drive recorder 5-i.
<Other embodiments>
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and various modifications can be made.

(1) The management device 3 may not calculate the first driver index in step 12 above. In this case, the process proceeds to step 14 after step 12 . Also, the management device 3 does not need to calculate the second driver index in step 12 described above. In this case, if the determination in step 13 is negative, the process proceeds to step 14 .

(2) In step 12, the management device 3 may calculate one index (hereinafter referred to as a comprehensive index) that represents both the driving skill and driving characteristics of the driver. In this case, the management device 3 determines whether or not the difference between the comprehensive index and the preset reference value is equal to or greater than the threshold. Proceed to 15.

(3) The form of the range 61 may be a form other than the range centered on the position of the vehicle 59 requiring caution. For example, the range 61 may be a range in front of the vehicle 59 requiring caution in the direction of travel.

(4) The drive recorders 5-1 to 5-N may be devices that can be removed from the vehicle and carried. The drive recorders 5-1 to 5-N may be smartphones, tablet terminals, and the like, for example.

(5) For example, when the vehicle 7-i exists within the range 61, the management device 3 notifies the drive recorder 5-i of that fact. In that case, the drive recorder 5-i gives an audible warning. The configuration for outputting the voice may be a part of the drive recorder 5-i, or may be another device mounted on the vehicle 7-i.

Further, the drive recorder 5-i visually displays the positional relationship, distance, etc. between the vehicle 59 requiring attention and the vehicle 7-i. The configuration for displaying may be a part of the drive recorder 5-i or another device mounted on the vehicle 7-i.

When the vehicle 7-i that has been within the range 61 moves out of the range 61, the management device 3 notifies the drive recorder 5-i of this fact, for example. In that case, the drive recorder 5-i notifies, by voice or display, that the vehicle 7-i has moved out of the range 61. FIG. Further, the drive recorder 5-i restores the recording condition from the second recording condition to the first recording condition.

(6) A plurality of functions possessed by one component in the above embodiment may be realized by a plurality of components, or a function possessed by one component may be realized by a plurality of components. . Also, a plurality of functions possessed by a plurality of components may be realized by a single component, or a function realized by a plurality of components may be realized by a single component. Also, part of the configuration of the above embodiment may be omitted. Moreover, at least part of the configuration of the above embodiment may be added or replaced with respect to the configuration of the other above embodiment.

(7) In addition to the management device and recording system described above, a drive recorder, a program for causing a computer to function as a control unit for the management device or the drive recorder, a non-transitional physical recording medium such as a semiconductor memory in which this program is recorded, The present disclosure can also be implemented in various forms such as a recording condition changing method, a drive recorder control method, and the like.

DESCRIPTION OF SYMBOLS 1... Recording system, 3... Management apparatus, 5-1-5-N... Drive recorder, 6... Internet network, 7-1-7-N... Vehicle, 9... Communication network, 11... Control part, 13... Storage part , 15... communication device, 17... CPU, 19... memory, 21... vehicle information acquisition unit, 23... index calculation unit, 25... index determination unit, 27... instruction unit, 29... range determination unit, 31... peripheral information acquisition unit , 33... Dangerous state determination unit, 37... Control unit, 39... Camera, 41... Sensor group, 43... Storage unit, 45... Communication device, 47... CPU, 49... Memory, 51... Information creation unit, 53... Information transmission Unit, 55... Instruction acquisition unit, 57... Recording condition setting unit, 59... Vehicle requiring special attention, 61... Area

Claims (3)

A management device capable of communicating with a drive recorder mounted on a vehicle,
a vehicle information acquisition unit configured to acquire vehicle information representing the state of the vehicle and driving information representing behavior of a driver of the vehicle from the drive recorder;
an index calculation unit configured to calculate a driver index representing at least one of driving skill and driving characteristics of the driver based on the vehicle information and the driving information obtained by the vehicle information obtaining unit;
an index determination unit configured to determine whether a difference between the driver index calculated by the index calculation unit and a preset reference value is equal to or greater than a threshold;
an instruction unit configured to instruct a recording condition to the drive recorder;
When the index determination unit determines that the difference is equal to or greater than the threshold for a first vehicle that is a part of the vehicles, the a setting range determination unit configured to determine whether or not there is a second vehicle other than the first vehicle among vehicles;
with
The instruction unit is configured such that, when the index determination unit determines that the difference is equal to or greater than the threshold, the image obtained by recording is compared to a case where the index determination unit determines that the difference is less than the threshold. configured to indicate to the drive recorder the recording condition that increases the amount of information in
The instruction unit determines that the second vehicle does not exist within the set range when the set range determination unit determines that the second vehicle exists within the set range. The management device configured to instruct the drive recorder mounted on the second vehicle of the recording condition that increases the amount of information compared to the case where the recording condition is increased. The management device according to claim 1,
a peripheral information acquisition unit configured to acquire peripheral information representing a situation around the vehicle;
a dangerous state determination unit configured to determine whether the vehicle is in a dangerous state based on the vehicle information and the surrounding information;
further comprising
When the dangerous situation determination unit determines that the vehicle is in the dangerous state, the instruction unit is configured to make the above-described dangerous state determination unit more sensitive to the dangerous situation determination unit than when the dangerous situation determination unit determines that the vehicle is not in the dangerous state. A management device configured to instruct the drive recorder of the recording condition that increases the amount of information. A management device according to claim 1 or 2 ,
the drive recorder;
A recording system with

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