JP2016137856A - Vehicle information control system, information processing unit, and vehicle information control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a data frame, which easily determines a seat use state in a vehicle, usable.SOLUTION: A vehicle information control system 10 has a detection part 14, a control part 26, and an output part 25. The detection part 14 detects an information element regarding seating in a vehicle. The control part 26 generates a data frame including at least part of the information element. The output part 25 outputs the data frame.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle information management system, an information processing apparatus, and a vehicle information management method for managing information in a vehicle.

  In recent years, a situation in a vehicle such as an automobile is determined, and on-vehicle equipment is controlled based on the determination result. For example, it has been proposed to capture the inside of a vehicle such as an automobile, determine the presence or absence of a passenger in the passenger seat based on the captured image, and control the airbag in the passenger seat based on the determination result (Patent Document 1). reference).

JP 2007-253705 A

  However, in the technical matter proposed in Patent Document 1, since it is necessary to analyze a captured image, a processing load is relatively large and a processor that can withstand the load is required.

  Therefore, an object of the present invention made in view of such circumstances is to provide a vehicle information management system, an information processing apparatus, and a vehicle information management method that enable use of a data frame that can easily determine the use status of a seat in a vehicle. It is to provide.

In order to solve the above-mentioned problems, the vehicle information management system according to the first aspect is
A detection unit for detecting information elements related to seating in the vehicle;
A control unit for generating a data frame including at least a part of the information element;
And an output unit that outputs the data frame.

In the vehicle information management system according to the second aspect,
The information elements are: seat ID, seat weight, use of seat belt, seat belt feed amount, child seat use, wheelchair use, door open / close state, door pull-out amount when riding And at least one of the open / closed states of the door when boarding.

In the vehicle information management system according to the third aspect,
The control unit updates the data frame when there is a change in the information element acquired at different times,
The output unit preferably outputs the updated data frame.

In the vehicle information management system according to the fourth aspect,
The data frame preferably includes a plurality of types of the information elements.

In the vehicle information management system according to the fifth aspect,
It is preferable that the control unit discriminates a use situation for each seat of the vehicle based on the data frame.

In the vehicle information management system according to the sixth aspect,
A storage unit for storing a correspondence table of seat usage statuses corresponding to combinations of the information elements included in the data frame;
It is preferable that the control unit discriminates a use situation for each seat of the vehicle using the correspondence table.

In the vehicle information management system according to the seventh aspect,
An imaging unit for imaging the surrounding area of the vehicle,
It is preferable that the control unit generates a command to change a guide to be superimposed on the captured image based on a usage situation for each seat of the vehicle.

An information processing apparatus according to the eighth aspect is
An acquisition unit for acquiring information elements related to seating in the vehicle;
A control unit for generating a data frame including at least a part of the information element;
And an output unit that outputs the data frame.

  As described above, the solution of the present invention has been described as an apparatus. However, the present invention can be realized as a method, a program, and a storage medium storing the program, which are substantially equivalent thereto, and the scope of the present invention. It should be understood that these are also included.

For example, a vehicle information management method that realizes the ninth aspect of the present invention as a method,
Detect information elements related to seating in the vehicle,
Generating a data frame including at least a part of the information element;
The data frame is output.

  According to the vehicle information management system, the image processing apparatus, and the vehicle information management method according to the present invention configured as described above, it is possible to use a data frame that can easily determine the use status of a seat in the vehicle.

It is a functional block diagram which shows schematic structure of the vehicle which has the vehicle information management system which concerns on one Embodiment of this invention. It is a functional block diagram which shows schematic structure of the vehicle information management system of FIG. It is a block diagram which shows the structure of the data frame which the control part of FIG. 2 produces | generates. It is a corresponding | compatible table which the memory | storage part of FIG. 2 memorize | stores. FIG. 3 is a captured image superimposed on a guide displayed on the display of FIG. 2. It is a sequence diagram which shows operation | movement until a data frame is produced in the vehicle information management system of FIG. It is a flowchart for demonstrating the guide superimposition process which the image processing apparatus of FIG. 2 performs.

  Hereinafter, embodiments of an imaging apparatus to which the present invention is applied will be described with reference to the drawings.

  As shown in FIG. 1, a vehicle information management system 10 according to an embodiment of the present invention is provided in a vehicle 11 such as a vehicle. As shown in FIG. 2, the vehicle information management system 10 includes a CAN bus 12, an engine control unit 13, a detection unit 14, an information processing device 15, an imaging unit 16, an image processing device 17, and a display 18. The

  The CAN bus 12 is connected to the engine control unit 13, the detection unit 14, the information processing device 15, the imaging unit 16, the image processing device 17, and the display 18. The CAN bus 12 transmits various information and commands between the engine control unit 13, the detection unit 14, the information processing device 15, the imaging unit 16, the image processing device 17, and the display 18.

  The engine control unit 13 is a general-purpose CPU that executes a specific function by reading a dedicated microprocessor such as an engine ECU or a specific program, for example. The engine control unit 13 performs engine control such as starting the engine of the vehicle 11, adjusting the fuel injection amount, and stopping the engine. In addition, when the engine is started, the engine control unit 13 transmits the engine start to the information processing device 15 as information.

  The detection unit 14 is provided for each seat in the vehicle 11. The detection unit 14 includes, for example, a seat microcomputer 19 and at least one of a weight sensor 20, a seat belt sensor 21, a child seat sensor 22, and a door sensor 23.

  The detection unit 14 detects information elements related to sitting for each seat and transmits the information elements to the information processing device 15. The information elements related to the seating are, for example, the seat ID assigned to each seat detected and output by the seat microcomputer 19, the weight applied to each seat detected and output by the weight sensor 20, and the seat belt sensor 21 detecting and outputting The presence / absence of the use of the seat belt for each seat to be used and the amount of the seat belt fed, whether the child seat sensor 22 detects and outputs the child seat, the door sensor 23 detects and outputs the door open / close state, and the door when riding Is at least one of the drawer amount and the door opening / closing time during boarding. The detection unit 14 may include sensors other than the sensors described above, and may detect information elements related to sitting, for example, whether or not a wheelchair is used.

  The information processing device 15 includes an acquisition unit 24, an output unit 25, a control unit 26, and a storage unit 27. When the information processing device 15 acquires information for starting the engine from the engine control unit 13, the information processing device 15 starts acquiring information elements and creating data frames, which will be described below.

  The acquisition unit 24 and the output unit 25 are, for example, input / output interfaces. The acquisition unit 24 acquires information elements related to sitting from the detection unit 14. The output unit 25 outputs a data frame generated by the control unit 26 as will be described later.

  The control unit 26 is, for example, a dedicated microprocessor or a general-purpose CPU that executes a specific function by reading a specific program. The control unit 26 generates a data frame including at least a part of information elements related to the seating acquired by the acquisition unit 24.

  The data frame includes at least one information element, preferably a plurality of information elements. For example, as shown in FIG. 3, the data frame 28 includes a seat ID 29, weight information 30, seat belt usage information 31, seat belt feed amount information 32, child seat attachment information 33, door opening / closing state information 34, and a door pull-out amount when boarding Information 35 and door opening / closing time information 36 when boarding are included. The seat ID 29 is an ID given in advance for each seat. The seat belt usage information 31 is either in use or unused of the seat belt. The child seat attachment information 33 is either installation or non-installation of the child seat.

  Further, the control unit 26 acquires information related to the seating at different times periodically or based on the status of the external device. When there is a change in each information element related to the seating, the control unit 26 updates the data frame 28 using the information element having the change.

  Further, the control unit 26 determines the usage status of each seat of the vehicle 11 based on the data frame 28. The control unit 26 determines the use status of the seat based on each information element in the data frame 28. Furthermore, the control unit 26 determines the seat usage status based on the combination of information elements in the data frame 28. When the control unit 26 determines the seat usage status based on a combination of information elements in the data frame 28, the control unit 26 performs determination using a correspondence table stored in the storage unit 27 described later. The control unit 26 can output the result of determining the seat usage status by incorporating it into the data frame 28 or as a single piece of information.

  The control unit 26 can determine the weight of the passenger sitting on each seat or the loaded luggage, for example, based on the weight as each information element.

  Moreover, the control part 26 can discriminate | determine whether the passenger is seated in each seat based on the presence or absence of the use of a seat belt as each information element, for example.

  Further, the control unit 26, as each information element, for example, based on the amount of the seat belt paid out, whether or not the occupant is seated in each seat, the size of the occupant seated in each seat, the seat belt, Whether or not a fixed child seat is attached can be determined. More specifically, the control unit 26 determines that an occupant is seated in the seat when the amount of the seat belt in an arbitrary seat exceeds the threshold of the first amount. Further, the control unit 26 determines that the occupant has a physique corresponding to the increase in the amount of advance when the amount of advance of the seat belt of any seat exceeds the threshold of the first amount of advance. Further, the control unit 26 determines that the child seat is attached to the seat when the amount of the seat belt of the arbitrary seat is equal to or less than the threshold of the first extension and exceeds the threshold of the second extension. To do. The threshold value of the second extension amount is an assumed extension amount for fixing the fixed child seat by the seat belt to the seat, and may be set to a value smaller than the threshold value of the first extension amount. Further, when the amount of the seat belt fed out of any seat is less than the second feed amount threshold, the control unit 26 determines that at least the passenger is not seated and the seat belt is not attached to the seat.

  Further, the control unit 26 determines, for example, whether or not an ISOFIX child seat is attached as each information element based on, for example, whether or not a child seat is attached.

  Moreover, the control part 26 can discriminate | determine the presence or absence of the passenger's seating to the seat nearest to the opened door as each information element, for example based on the opening-and-closing state of a door. Moreover, the control part 26 can discriminate | determine the magnitude | size of the passenger's physique seated in the seat nearest to the said door based on the drawer amount of the door at the time of boarding as each information element, for example. Moreover, the control part 26 can discriminate | determine the magnitude | size of the passenger's physique seated in the seat nearest to the said door based on the opening / closing time of the door at the time of boarding as each information element, for example.

  As a combination of information elements, the control unit 26 determines, for example, whether or not a load is placed and whether or not a passenger is seated on a child seat, based on the weight and the amount of seat belt being fed.

  The control unit 26, for example, when the weight of the seat determined that the occupant is seated based on the amount of extension of the seat belt exceeds the weight threshold for the occupant corresponding to the amount of extension of the seat belt. , It is determined that the passenger in the seat is carrying a baggage. Further, the control unit 26, for example, an infant in which the weight of the seat determined that the child seat is attached based on the amount of the seat belt fed is the sum of the weight of the general child seat and the minimum weight of the general infant When the weight threshold is exceeded, it is determined that the passenger is seated on the child seat. In addition, when the weight of the seat, which is determined based on the amount of the seat belt that is not seated by the occupant and the seat belt, exceeds the weight threshold for the load, The weight of the load is determined according to the fact that it is placed and the weight.

  The storage unit 27 stores a correspondence table of seat usage statuses corresponding to combinations of information elements. For example, as shown in FIG. 4, the storage unit 27 stores a correspondence table of seat usage statuses corresponding to combinations of weights and seat belt feed amounts.

  The imaging unit 16 is, for example, a rear camera, and is provided so as to be able to image a peripheral region behind the vehicle 11. The imaging unit 16, for example, captures a peripheral area behind the vehicle 11 when the vehicle 11 moves backward at 30 fps, and generates a captured image. The imaging unit 16 transmits the captured image to the image processing device 17.

  The image processing device 17 is, for example, a device including a dedicated microprocessor or a general-purpose CPU that executes a specific function by reading a specific program. The image processing device 17 acquires a captured image from the imaging unit 16, and acquires a data frame 28 and a usage status for each seat of the vehicle 11 from the information processing device 15. The image processing device 17 performs predetermined image processing on the captured image. Further, the image processing device 17 performs a process of superimposing on the captured image a guide corresponding to the usage state of each seat of the vehicle 11 on the captured image. The image processing device 17 transmits the captured image on which the guide is superimposed to the display 18.

  The guide according to the use situation for each seat will be described in detail below. As shown in FIG. 5, the guide 37 includes a vehicle width extension line 38, a distance guide line 39, and a door opening / closing guide line 40 and is displayed superimposed on the captured image.

  The vehicle width extension line 38 is a trajectory that passes through both ends of the vehicle 11 during reverse travel. The distance reference line 39 indicates a predetermined distance from the current vehicle 11, for example, a distance of 1 m and 3 m.

  The door opening / closing guide line 40 is a line parallel to the vehicle width extension line 38 that is separated from the vehicle width extension line 38 based on the use situation of each seat. The door opening / closing guide line 40 indicates a guide for the required amount of drawer of the door based on the use status of the data frame 28 and the seat. For example, as the passenger's physique increases, the required door pull-out amount increases. Therefore, as the weight of the seat on which the passenger is seated is increased, the door opening / closing guide line 40 is further separated from the vehicle width extension line 38. Positioned. In addition, since the necessary amount of drawer of the door increases as the load on the passenger is increased, the door opening / closing guide line 40 increases from the vehicle width extension line 38 as the weight of the seat on which the passenger with the load is seated increases. It is positioned at a position that is largely separated. Further, when the infant is seated on the child seat, the required door pull-out amount is large, so that the door opening / closing guide line 40 is positioned at a position relatively far away from the vehicle width extension line 38. Further, the larger the load placed on the seat, the larger the required amount of drawer of the door. Therefore, the larger the weight of the seat on which the load is directly placed, the larger the load, and the larger the load, the door opening / closing guideline 40 Is positioned at a position far away from the vehicle width extension line 38. The door opening / closing guide line 40 is positioned and superimposed in units of a left seat group arranged in front and rear and a right seat group arranged in front and rear.

  The display 18 is, for example, an LCD, and displays a captured image acquired from the image processing device 17.

  Next, the operation until the information processing apparatus 15 creates the data frame 28 in the vehicle information management system 10 will be described with reference to FIG.

  When the engine control unit 13 transmits an engine start notification to the information processing device 15, the information processing device 15 requests the detection unit 14 to transmit an information element. The detection unit 14 transmits the information element to the information processing device 15 in response to a request from the information processing device 15. Thereafter, the information processing apparatus 15 generates a data frame 28 based on the acquired information element (step S100). Further, the information processing apparatus 15 determines the usage status for each seat using the data frame 28 (step S101). After the creation of the data frame 28 and the determination of the usage status for each seat, the information processing device 15 requests the detection unit 14 to transmit the information element again at a predetermined cycle. After acquiring the information element from the detection unit 14 in response to the request, the information processing apparatus 15 updates the data frame 28 when there is a change in the information element to be newly acquired (step S102). In addition, when the data frame 28 is updated, the information processing apparatus 15 determines the usage status for each seat (step S103).

  Next, guide superimposition processing executed by the image processing device 17 in the present embodiment will be described with reference to the flowchart of FIG. The image processing device 17 starts the guide superimposing process when the vehicle 11 starts moving backward, specifically when detecting the change to the back gear. Further, the image processing device 17 ends the guide superimposing process when the vehicle 11 stops moving backward, specifically, when detecting a change from the back gear to another gear, or detecting a stop of the engine.

  In step S <b> 200, the image processing device 17 reads the data frame 28 and the usage status for each seat from the information processing device 15. After reading, the process proceeds to step S201.

  In step S201, the image processing apparatus 17 positions the door opening / closing guide line 40 based on the data frame 28 read in step S200 and the usage status for each seat. After positioning, the process proceeds to step S202.

  In step S <b> 202, the image processing device 17 acquires a captured image from the imaging unit 16. When the captured image is acquired, the process proceeds to step S203.

  In step S203, the image processing device 17 performs predetermined image processing on the captured image, and further superimposes the guide 37 including the door opening / closing guideline 40 positioned in step S201 on the captured image acquired in step S202. When the guide 37 is superimposed on the captured image, the process proceeds to step S204.

  In step S204, the image processing apparatus 17 transmits the captured image on which the guide 37 is superimposed in step S204 to the display 18. After transmission of the captured image, the process returns to step S202.

  According to the vehicle information management system of the present embodiment configured as described above, since the data frame 28 including at least a part of the information elements related to the seating is output, the usage status of the seats in the vehicle 11 can be easily analyzed. The resulting data frame 28 becomes available. Therefore, it is possible to provide the data frame 28 that can be used for analyzing the seat usage status to an external device that performs a predetermined operation according to the seat usage status.

  In addition, according to the vehicle information management system of the present embodiment, the data frame 28 is updated when there is a change in information elements acquired at different times, so even if the seat usage situation changes The data frame 28 suitable for use can be used.

  Further, according to the vehicle information management system of the present embodiment, since the usage status of each seat of the vehicle 11 is determined, the analysis process of the data frame 28 for each external device that performs a predetermined operation according to the usage status of the seat is performed. The load is reduced.

  Further, according to the vehicle information management system of the present embodiment, since the usage status of each seat of the vehicle 11 is determined based on the seat usage status correspondence table corresponding to the combination of information elements, The processing load is reduced.

  Moreover, according to the vehicle information management system of this embodiment, since the guide 37 according to the use condition for every seat of the vehicle 11 is superimposed on a captured image, useful information is provided to the driver.

Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention.

  For example, in the present embodiment, the creation of the data frame 28 is started when the engine is started. For example, even when the creation of the data frame 28 is started when some door of the vehicle 11 is opened. Good. Further, in the present embodiment, the information regarding the seating is acquired at different times according to the situation of the external device. However, for example, the information regarding the seating may be reacquired when the door is opened. .

DESCRIPTION OF SYMBOLS 10 Vehicle information management system 11 Vehicle 12 CAN bus 13 Engine control part 14 Detection part 15 Information processing apparatus 16 Imaging part 17 Image processing apparatus 18 Display 19 Seat microcomputer 20 Weight sensor 21 Seat belt sensor 22 Child seat sensor 23 Door sensor 24 Acquisition part 25 Output Unit 26 Control unit 27 Storage unit 28 Data frame 29 Seat ID
30 Weight information 31 Seat belt usage information 32 Seat belt feed amount information 33 Child seat mounting information 34 Door opening / closing state information 35 Riding door pull-out information 36 Riding door opening / closing time information 37 Guide 38 Vehicle width extension line 39 Distance reference line 40 Door Open / close indication line

Claims (9)

A detection unit for detecting information elements related to seating in the vehicle;
A control unit that generates a data frame including at least a part of at least one type of the information element;
The vehicle information management system comprising: an output unit that outputs the data frame. The vehicle information management system according to claim 1,
The information elements are: seat ID, seat weight, use of seat belt, seat belt extension, child seat installation, door open / close state, door pull-out amount when boarding, door door position when boarding The vehicle information management system includes at least one of opening / closing time and use / non-use of a wheelchair. The vehicle information management system according to claim 1 or 2,
The control unit updates the data frame when there is a change in the information element acquired at different times,
The output unit outputs the updated data frame. A vehicle information management system, characterized in that: The vehicle information management system according to any one of claims 1 to 3,
The vehicle information management system, wherein the data frame includes a plurality of types of information elements. The vehicle information management system according to any one of claims 1 to 4, wherein the control unit discriminates a use situation for each seat of the vehicle based on the data frame. Management system. The vehicle information management system according to claim 5,
A storage unit for storing a correspondence table of seat usage statuses corresponding to combinations of the information elements included in the data frame;
The said control part discriminate | determines the use condition for every seat of the said vehicle using the said correspondence table. The vehicle information management system characterized by the above-mentioned. The vehicle information management system according to claim 5 or 6,
An imaging unit that images a peripheral region of the vehicle and generates a captured image;
A vehicle information management system, further comprising: an image processing device that superimposes a guide corresponding to a use situation for each seat of the vehicle on the captured image. An acquisition unit for acquiring information elements related to seating in the vehicle;
A control unit for generating a data frame including at least a part of the information element;
An information processing apparatus comprising: an output unit that outputs the data frame. Detect information elements related to seating in the vehicle,
Generating a data frame including at least a part of the information element;
The vehicle information management method characterized by outputting the data frame.

Images