Patent Publication Number: US-2020283010-A1

Title: Vehicle management system

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     The present application claims priority to and incorporates by reference the entire contents of Japanese Patent Application No. 2019-041168 filed in Japan on Mar. 7, 2019. 
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a vehicle management system. 
     2. Description of the Related Art 
     In the related art, there is a technology of estimating an emotion of a user. Japanese Patent Application Laid-open No. 2017-73107 discloses a technology of estimating an emotion of a user in a vehicle. In a case where a vehicle is a taxi, an information presentation device of Japanese Patent Application Laid-open No. 2017-73107 estimates an emotion of a passenger, and performs control such as setting a speed limit, increasing the weight of an accelerator, or switching to automatic driving without making a notification to a driver when the passenger feels fear. 
     In a shared vehicle in which a plurality of passengers ride, it is desired to be able to appropriately grasp demands of the passengers. The passengers may desire to send their demands to the vehicle without being noticed by the other passengers. For example, in a case where it is desired to cause the vehicle to give a warning to a passenger doing an annoying behavior, if it is possible to send such a demand to the vehicle without being noticed by the other passengers, the convenience of the shared vehicle is improved. 
     SUMMARY OF THE INVENTION 
     An object of the present invention is to provide a vehicle management system in which a passenger can send a demand to a vehicle without being noticed by the other passengers. 
     In order to achieve the above mentioned object, a vehicle management system according to one aspect of the present invention includes an imaging device provided in a shared vehicle and configured to capture a plurality of passengers on the vehicle; a detection unit configured to detect that a user, who is one of the passengers, has performed a predetermined motion which is a motion registered in advance, based on a capturing result by the imaging device; and a controller configured to control the vehicle based on a predetermined command, which is a command registered in advance as a command corresponding to the predetermined motion, when the predetermined motion is detected. 
     According to another aspect of the present invention, in the vehicle management system, it is preferable that the predetermined command is a command for causing the vehicle to give a warning to the passenger doing an annoying behavior. 
     According to still another aspect of the present invention, in the vehicle management system, it is preferable that the predetermined command is a command for changing a drop-off point of the user. 
     According to still another aspect of the present invention, in the vehicle management system, it is preferable that the predetermined command is a command for changing the drop-off point to a point close to a nearest restroom. 
     According to still another aspect of the present invention, in the vehicle management system, it is preferable that the controller is configured to inquire of the passenger, when the passenger performs a typical motion of a person in trouble, whether the passenger is actually in trouble by individual communication, and the controller controls the vehicle based on a response motion performed by the passenger in response to the inquiry from the controller. 
     The above and other objects, features, advantages and technical and industrial significance of this invention will be better understood by reading the following detailed description of presently preferred embodiments of the invention, when considered in connection with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a block diagram of a vehicle management system according to an embodiment; 
         FIG. 2  is a perspective view of main parts of a vehicle according to the embodiment; 
         FIG. 3  is a sectional view of the vehicle according to the embodiment; 
         FIG. 4  is a layout diagram of an in-vehicle system according to the embodiment; 
         FIG. 5  is a flowchart according to registration of a predetermined motion in the embodiment; 
         FIG. 6  is a flowchart according to vehicle control in the embodiment; and 
         FIG. 7  is a flowchart according to another vehicle control in the embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereinafter, a vehicle management system according to an embodiment of the present invention will be described in detail with reference to the drawings. It is noted that the invention is not limited by this embodiment. Furthermore, components in the following embodiment include those that can be easily conceived of by a person skilled in the art or those that are substantially the same. 
     Embodiment 
     With reference to  FIG. 1  to  FIG. 7 , an embodiment will be described. The present embodiment relates to a vehicle management system.  FIG. 1  is a block diagram of the vehicle management system according to the embodiment,  FIG. 2  is a perspective view of main parts of a vehicle according to the embodiment,  FIG. 3  is a sectional view of the vehicle according to the embodiment,  FIG. 4  is a layout diagram of an in-vehicle system according to the embodiment,  FIG. 5  is a flowchart according to registration of a predetermined motion in the embodiment,  FIG. 6  is a flowchart according to vehicle control in the embodiment, and  FIG. 7  is a flowchart according to another vehicle control in the embodiment. 
     As illustrated in  FIG. 1 , a vehicle management system  1  according to the embodiment includes an in-vehicle system  2  and a center system  3 . The in-vehicle system  2  is a system disposed in a vehicle  100 . The vehicle  100  according to the embodiment is a shared vehicle (ride-sharing vehicle) and is a vehicle that travels with a plurality of passengers who want to ride together. The vehicle  100  takes each passenger to a desired drop-off point. The vehicle  100  may cause each passenger to get on at a boarding point designated by the passenger or a predetermined boarding point. 
     The vehicle  100  according to the present embodiment is an automatic traveling vehicle that automatically travels. That is, the vehicle  100  can travel with only passengers on board without a driver. 
     As illustrated in  FIG. 3  and  FIG. 4 , the vehicle  100  includes a plurality of seats S. The seats S are arranged along a vehicle front-and-rear direction and a vehicle width direction. As illustrated in  FIG. 4 , the seats S disposed at a front portion of the vehicle  100  include a first seat S 1  and a second seat S 2 . The first seat S 1  is a seat S disposed at a right front portion in a vehicle cabin IN. The second seat S 2  is a seat S disposed at a left front portion in the vehicle cabin IN. The passenger sits on any one of the seats S. In the following description, a passenger seated on the seat S is referred to as a “passenger P”. Furthermore, a passenger seated on the first seat S 1  is referred to as a “first passenger P 1 ” and a passenger seated on the second seat S 2  is referred to as a “second passenger P 2 ”. 
     As illustrated in  FIG. 1 , the in-vehicle system  2  includes a system controller  4 , a vehicle control processing unit  5 , an image processing unit  6 , a sound output processing unit  7 , a directional speaker  8 , a speaker  9 , a personal display  10 , a display  11 , a hand button  12 , a camera  13 , and a communication device  14 . 
     The system controller  4  integrally controls the vehicle  100 . The system controller  4 , for example, is an electronic control device. The system controller  4  includes a calculation unit, a storage unit, an interface and the like. The system controller  4  is communicably connected to each unit constituting the in-vehicle system  2 . 
     The vehicle control processing unit  5  controls various operations of the vehicle  100 . The vehicle control processing unit  5 , for example, executes travel control of the vehicle  100 , and control for opening and closing the doors of the vehicle  100 . On the basis of commands from the system controller  4 , the vehicle control processing unit  5  controls various actuators provided in the vehicle  100 . The actuators provided in the vehicle  100  include a travel driving actuator, a braking actuator, a steering actuator, a door opening/closing actuator, and the like. The vehicle control processing unit  5  can automatically drive the vehicle  100 . The vehicle control processing unit  5  acquires information from various sensors and navigation devices disposed in the vehicle  100 , controls the actuators on the basis of the acquired information, and automatically drives the vehicle  100 . 
     The image processing unit  6  executes image processing on images captured by the camera  13 . More specifically, on the basis of the images captured by the camera  13 , the image processing unit  6  detects motions of a plurality of passengers P on the vehicle  100 . The motions of the passengers P include the postures of the passengers P, face directions, line-of-sight directions, and the like. Information on the detection results of the image processing unit  6  are transmitted to the system controller  4 . 
     The sound output processing unit  7  processes sound output in the vehicle  100 . For example, on the basis of sound data stored in advance, the sound output processing unit  7  generates a sound signal that is output from the directional speaker  8  or the speaker  9 . Information on the processing result by the sound output processing unit  7  is transmitted to the system controller  4 . 
     The directional speaker  8  and the personal display  10  are provided for each passenger P of the vehicle  100 . The speaker  9  and the display  11  are common communication devices each provided for the passengers P. As illustrated in  FIG. 2  to  FIG. 4 , in the vehicle  100 , a first module  21  and a second module  22  are disposed. The first module  21  is a common module each provided for the passengers P. The first module  21  of the present embodiment is common to all the passengers P and only one first module  21  is provided in the vehicle  100 . The second module  22  is a personal module each provided for each passenger P. That is, the same number of second modules  22  as the number of seats S disposed in the vehicle  100  are disposed. 
     The first module  21  and the second module  22  are disposed on a roof member (roof) RF of the vehicle  100 . The roof member RF is supported by a body BO of the vehicle  100  via a pillar PL. The first module  21  and the second module  22  are fixed to the vehicle cabin side in the roof member RF. The first module  21  is disposed at the front center in the roof member RF. The second module  22  is disposed corresponding to each seat S. The second module  22  includes a right front module  22 A and a left front module  22 B. 
     The right front module  22 A is the second module  22  corresponding to the first seat S 1  among the second modules  22  of the vehicle  100 . The right front module  22 A is disposed on the front right side in the roof member RF. The left front module  22 B is the second module  22  corresponding to the second seat S 2 . The left front module  22 B is disposed on the front left side in the roof member RF. 
     As illustrated in  FIG. 4 , the first module  21  includes the speaker  9 , the display  11 , the camera  13 , and a microphone  15 . The speaker  9  outputs sound toward all the passengers P of the vehicle  100 . The display  11  is disposed toward the rear of the vehicle. The display  11  displays an image toward all the passengers P. The display  11  is disposed in a position visually recognizable from all the passengers P, for example. 
     The camera  13  is an imaging device that captures the vehicle cabin IN. The camera  13  is disposed above the display  11  in the first module  21 . The camera  13  is disposed toward the rear of the vehicle and captures the rear of the camera  13  in the vehicle cabin IN. The camera  13  is configured to be able to capture all the passengers P, for example. For example, the arrangement and angle of view of the camera  13  are set to be able to capture faces and upper bodies of all the passengers P. The camera  13  may perform imaging in accordance with an imaging command from the system controller  4 , or perform imaging automatically and continuously. The camera  13  of the present embodiment is a video camera, for example, and captures a moving image in the vehicle cabin IN. 
     The microphone  15  is a microphone that collects sound in the vehicle cabin IN. The microphone  15  is configured to be able to detect sound of all the passengers P, for example. The microphone  15  is disposed toward the rear of the vehicle. 
     The second module  22  includes the directional speaker  8  and the personal display  10 . The directional speaker  8  is a speaker that outputs directional sound. For example, the directional speaker  8  of the right front module  22 A is configured to output directional sound targeted at the first passenger P 1 . That is, the directional speaker  8  of the right front module  22 A outputs directional sound such that the passengers P, except for the first passenger P 1 , are not able to hear the sound. Similarly, the directional speaker  8  of the left front module  22 B is configured to output directional sound targeted at the second passenger P 2 . The directional speaker  8  may be disposed on a headrest or the like of each seat S, instead of being disposed on the second module  22 . 
     The personal display  10  is a personal display device disposed for each passenger P. For example, the personal display  10  of the right front module  22 A is a dedicated display for the first passenger P 1 . The personal display  10  may be configured such that no image is visible from the passengers P except for a target passenger P. For example, the personal display  10  of the right front module  22 A may output directional display light such that no image is visible from the passengers P except for the first passenger P 1 . 
     The hand button  12  is a button disposed close at hand of each passenger P. The hand button  12 , for example, may be provided in each seat S, or may be disposed in the vicinity of each seat S in the body BO. The passenger P can issue commands and requests to the in-vehicle system  2  with the hand button  12 . 
     The communication device  14  is a wireless communication device that transmits and receives radio waves to/from the center system  3 . The communication device  14  may communicate directly with a communication device  34  of the center system  3 , or may communicate with the communication device  34  via a relay by a base station or a relay by another vehicle  100 . Communication between the communication device  14  of the in-vehicle system  2  and the communication device  34  of the center system  3  may include wired communication. 
     The center system  3  includes a system controller  31 , a monitor  32 , a microphone  33 , and the communication device  34 . The center system  3  is a system that manages a plurality of vehicles  100 . The center system  3  acquires information on current positions of the vehicle  100 , the presence or absence of the passenger P, and the like from each vehicle  100  by communication. The center system  3  can acquire image data captured by the camera  13  from each vehicle  100 , and monitor the state of the vehicle cabin IN of the vehicle  100 . Furthermore, the center system  3  transmits information on passengers scheduled to board to each vehicle  100  by communication. The center system  3  may have a camera that captures a center supervisor  300  to be described below. 
     The monitor  32  displays information for monitoring the vehicle  100 . The monitor  32  displays an image captured by the camera  13 , for example. The monitor  32  can display information on the vehicles  100 , or can display information on a specific vehicle  100 . The vehicle  100  is monitored by the center supervisor  300 . The microphone  33  picks up sound of the center supervisor  300 . The microphone  33  may be provided in a headset worn by the center supervisor  300 . The center supervisor  300  can converse with the passenger P of the vehicle  100  via the headset, for example. 
     The center supervisor  300  monitors each vehicle  100  by operating the center system  3 . For example, when a response request is made from the vehicle  100 , the center supervisor  300  responds to the passenger P of the relevant vehicle  100 . Furthermore, when abnormality and the like are detected in the vehicle  100 , the center supervisor  300  monitors the vehicle  100 . Furthermore, when the vehicle  100  detects a state in which the passenger P is in trouble, the center supervisor  300  may send an individual message to the passenger P. 
     With reference to  FIG. 5  and  FIG. 6 , an operation of the vehicle management system  1  according to the present embodiment will be described.  FIG. 5  illustrates a procedure in which a user  200  using the vehicle  100  registers a cue. The user  200  using the vehicle  100  of the present embodiment can issue a request or command to the vehicle management system  1  by a cue other than sound. The user  200  can register a motion (cue) corresponding to the request or command with the vehicle management system  1  in advance. 
     In the following description, the motion registered in advance by the user  200  is referred to as a “predetermined motion”. The predetermined motion is associated with a command for the vehicle management system  1 . The user  200  registers a command for the vehicle  100  by the predetermined motion with the vehicle management system  1  in advance. In the following description, a command, which is registered by the user  200  and registered in advance as a command corresponding to the predetermined motion, is referred to as a “predetermined command”. 
     The user  200  registers the predetermined motion and the predetermined command by using a smartphone  201 , for example. As illustrated in  FIG. 1 , the in-vehicle system  2  and the center system  3  of the embodiment can communicate with the smartphone  201 . Communication between the in-vehicle system  2  and the smartphone  201  is performed by short-range wireless communication, for example. Communication between the center system  3  and the smartphone  201  is performed using a communication line of a communication company, for example. 
     In the vehicle management system  1  of the present embodiment, the center system  3  accepts the registration of the predetermined motion and the predetermined command. The registration work is made by an application of the smartphone  201 , for example. With the application, personal information such as the name and address of the user  200  is registered as illustrated at step S 10  of  FIG. 5 . The personal information input with the application is transmitted to the center system  3 . The center system  3  assigns a user ID to the user  200  and stores therein the personal information in association with the user ID. 
     Next, as illustrated at step S 20 , a photograph of the face of the user  200  is registered. The user  200  captures his/her face with a camera of the smartphone  201  and generates facial image data. The user  200  designates facial image data to be transmitted with the application. In such a case, a plurality of pieces of facial image data captured in different directions may be transmitted. For example, in addition to an image obtained by capturing the face of the user  200  from the front, an image obtained by capturing the face from an oblique direction may be transmitted. The designated facial image data is transmitted from the smartphone  201  to the center system  3 . The center system  3  stores therein the facial image data in association with the user ID. The in-vehicle system  2  identifies the user  200  on the basis of the facial image data. 
     Next, at step S 30 , it is confirmed whether to register gestures or data for lip-reading. In the present embodiment, gestures or mouth motions can be registered as the predetermined motion. That is, at step S 30 , it is confirmed whether to register the predetermined motion. When the user  200  designates that the predetermined motion is registered at step S 30  (Yes at S 30 ), the present control flow proceeds to step S 40 , and when the user  200  designates that the predetermined motion is not registered at step S 30  (No at S 30 ), the present control flow ends. 
     At step S 40 , the user  200  registers the predetermined motion. The user  200  captures a moving image of the predetermined motion with the smartphone  201 . In such a case, the user  200  performs the predetermined motion and captures a moving image of the user  200  who is performing the motion. The user  200  designates moving image data to be transmitted with the application. One piece of the moving image data corresponds to one predetermined motion, for example. In such a case, when registering a plurality of predetermined motions, a plurality of pieces of moving image data is transmitted. Furthermore, the user  200  designates a command corresponding to the predetermined motion. A command that can be associated with the predetermined motion is prepared in advance by the vehicle management system  1 , for example. 
     A selectable command, for example, includes a command for causing the vehicle  100  to give a warning to another passenger P doing an annoying behavior. In the following description, the command for causing the vehicle  100  to give a warning to another passenger P doing an annoying behavior is referred to as a “first predetermined command”. Furthermore, a predetermined motion for executing the first predetermined command is referred to as a “first predetermined motion”. 
     The selectable command may include a command for changing a drop-off point of the user  200 . The command for changing the drop-off point, for example, may be a command for changing the drop-off point to a point close to the nearest restroom. In the following description, the command for changing the drop-off point is referred to as a “second predetermined command”. Furthermore, a predetermined motion for executing the second predetermined command is referred to as a “second predetermined motion”. 
     The selectable command may include a command for quickly stopping the vehicle  100 . The command for quickly stopping the vehicle  100  is referred to as a “third predetermined command”. Furthermore, a predetermined motion for executing the third predetermined command is referred to as a “third predetermined motion”. 
     The selectable command may include a command to be notified to the center supervisor  300 . This notification, for example, may include a notification requesting individual communication with the user  200 , or a notification for notifying that a troubled situation has occurred in the vehicle cabin IN. The command to be notified to the center supervisor  300  from the vehicle  100  is referred to as a “fourth predetermined command”. Furthermore, a predetermined motion for executing the fourth predetermined command is referred to as a “fourth predetermined motion”. 
     The user  200  designates a combination of the moving image data of the predetermined motion and the predetermined command corresponding to the predetermined motion, with the application. The moving image data and the corresponding predetermined command are transmitted to the center system  3 . The center system  3  stores therein the combination of the moving image data of the predetermined motion and the predetermined command corresponding to the predetermined motion in association with the user ID. For example, the center system  3  stores therein the first predetermined motion and the first predetermined command in association with each other, and stores therein the second predetermined motion and the second predetermined command in association with each other. After step S 40  is completed, the present control flow ends. 
     In the case of using the vehicle  100 , the user  200  makes a use reservation with the center system  3 . The use reservation is made by the application of the smartphone  201 , for example. The user  200  registers reservation information on a use date, a place to board, a time to board, a place to get off, and a time to get off with the center system  3 . The center system  3  stores therein the reservation information in association with the user ID. On the basis of the reservation information, the center system  3  dispatches the vehicle  100 . The center system  3  transmits the user ID of the user  200 , the reservation information, information on the predetermined motion, and the predetermined command to the vehicle  100  assigned to the user  200 . The information on the predetermined motion may be the moving image data itself registered by the user  200 , or information extracted from the moving image data, that is, information for detecting the predetermined motion from an image. 
     The vehicle  100  stops at a designated place to board at the time to board designated by the reservation information. User authentication is performed when the user  200  boards the vehicle  100 . The user authentication is made by the application of the smartphone  201 , for example. For example, the user ID and the reservation information are transmitted from the smartphone  201  to the in-vehicle system  2 . On the basis of the received information, the in-vehicle system  2  confirms that the reserved user  200  has boarded. The transmission of the predetermined motion and the predetermined command from the center system  3  to the in-vehicle system  2  may be executed simultaneously with the transmission of the reservation information, or may be executed after the boarding of the user  200  is confirmed. Alternatively, the predetermined motion and the predetermined command may be transmitted from the smartphone  201  to the in-vehicle system  2  when the user authentication is executed. 
     When the user  200  sits on the seat S, the seating position is confirmed. The seating position is confirmed on the basis of an image processing result by the image processing unit  6 , for example. The system controller  4 , for example, delivers the facial image data of the user  200  to the image processing unit  6 . On the basis of an image captured by the camera  13 , the image processing unit  6  determines a seat S on which the user  200  is sitting. On the basis of the determination result, the image processing unit  6  sends the position of the seat S on which the user  200  is sitting to the system controller  4 . 
     With reference to  FIG. 6 , an operation of the vehicle management system  1  when the user  200  uses the vehicle  100  will be described. At step S 110  of  FIG. 6 , the user  200  boards the vehicle  100 . The vehicle  100  executes user authentication as described above and specifies the seat S on which the user  200  is sitting. In the following description, it is assumed that the user  200  is sitting on the left front seat S 2 . That is, the user  200  boards the vehicle  100  as the second passenger P 2 . 
     Next, at step S 120 , an event what the user  200  want to notify the vehicle management system  1  happens. For example, it is assumed that the user  200  feels inconvenience due to the first passenger P 1  talking loudly on the first seat S 1 . In such a case, the user  200  wants the vehicle  100  to give a warning to the first passenger P 1 . However, it is desired that the first passenger P 1  does not know that the person who causes the warning is the user  200 . The vehicle management system  1  of the present embodiment can issue a command to the vehicle  100  without being noticed by the other passengers P, as described below. 
     At step S 130 , the user  200  performs the predetermined motion registered in advance. The predetermined motion performed here is the first predetermined motion. The first predetermined motion, for example, may be a gesture, a mouth motion, keeping a mouth in a specific shape, or other motions. 
     At step S 140 , the in-vehicle system  2  determines whether the predetermined motion has been detected. When the user  200  boards the vehicle  100 , the system controller  4  sends information on the predetermined motion of the user  200  to the image processing unit  6 . On the basis of image data captured by the camera  13 , the image processing unit  6  determines whether the predetermined motion of the user  200  has been detected. When the predetermined motion of the user  200  is detected, the image processing unit  6  sends the detected predetermined motion to the system controller  4 . For example, when the first predetermined motion by the user  200  is detected, the image processing unit  6  notifies the system controller  4  that the first predetermined motion has been detected. When positive determination is made at step S 140  that the predetermined motion has been detected (Yes at S 140 ), the present control flow proceeds to step S 150 , and when negative determination is made (No at S 140 ), the present control flow proceeds to step S 120 . 
     At step S 150 , the system controller  4  performs control according to the first predetermined command. The system controller  4  causes the sound output processing unit  7  to prepare sound data for warning an annoying behavior. The prepared message is a sound message such as “Please stop a behavior that is disturbing the other passengers”, for example. The system controller  4  causes the directional speaker  8  or the speaker  9  to output such a sound message. When the passenger P performing the annoying behavior is specified, a message may be output by the directional speaker  8 . For example, when it can be determined that the first passenger P 1  is performing the annoying behavior, a message may be output by the directional speaker  8  of the right front module  22 A. 
     The system controller  4  may cause the personal display  10  or the display  11  to display a character or an image for warning the annoying behavior. When the passenger P performing the annoying behavior is specified, a message may be displayed on the personal display  10 . For example, when it can be determined that the first passenger P 1  is performing the annoying behavior, a message may be displayed on the personal display  10  of the right front module  22 A. After the execution of step S 150 , the present control flow ends. 
     The vehicle management system  1  of the present embodiment can automatically detect that the passenger P is in trouble even when the predetermined motion is not detected. With reference to  FIG. 7 , an operation of automatically detecting that the passenger P is in trouble will be described. At step S 210  of  FIG. 7 , the user  200  boards the vehicle  100 . The vehicle  100  executes user authentication and specifies a seat S on which the user  200  is sitting. The user  200  may have registered the predetermined motion or may have registered no predetermined motion. The user  200  sits on the second seat S 2 , for example. After the execution of step S 210 , the present control flow proceeds to step S 220 . 
     At step S 220 , a motion of the user  200  is detected by the image processing unit  6 . The image processing unit  6  also detects motions of the passengers P other than the user  200 . After the execution of step S 220 , the present control flow proceeds to step S 230 . 
     At step S 230 , it is determined whether the user  200  seems to be in trouble. The image processing unit  6  calculates the degree of similarity between the motion detected at step S 220  and a sample motion stored in advance. The sample motion is a motion registered as a typical motion that is performed by the passenger P in trouble. The sample motion, for example, includes a motion of turning the face away from another passenger P doing an annoying behavior, a motion of frowning the face, or a motion of feeling impatient without calmness. The sample motion may be a motion in which the posture of the passenger P changes from a relaxed posture to a tensed posture. 
     The image processing unit  6  calculates the degree of similarity between the motion of the user  200  detected at step S 220  and the sample motion. When the degree of similarity is high, the image processing unit  6  determines that the user  200  has performed the same motion as the sample motion. The image processing unit  6  transmits the determination result to the system controller  4 . When the determination result that the user  200  has performed the same motion as the sample motion is received from the image processing unit  6 , the system controller  4  determines that the user  200  seems to be in trouble. When positive determination is made at step S 230  that the user  200  seems to be in trouble (Yes at S 230 ), the present control flow proceeds to step S 240 , and when negative determination is made (No at S 230 ), the present control flow proceeds to step S 220 . 
     At step S 240 , the system controller  4  executes individual communication with the user  200 . The individual communication is secret communication that is made unknown to the other passengers P than the user  200 . For example, the system controller  4  outputs a sound message to the user  200  through the directional speaker  8 . In such a case, the sound message, for example, is a message “When in trouble, please tell that by a gesture or a mouth motion”. 
     When the predetermined motion has been registered in advance, the user  200  can issue a command to the vehicle  100  by performing the predetermined motion. When the predetermined motion is not detected well or the predetermined motion has not been registered, the user  200  may perform a motion presented from the vehicle management system  1 . The system controller  4  notifies the user  200  of a motion for sending the troubled content by the individual communication. For example, the system controller  4  outputs a sound message “When feeling annoying other passengers, please look at the camera  13  for 10 seconds” from the directional speaker  8 . When the system controller  4  makes an inquiry to the user  200 , the present control flow proceeds to step S 250 . 
     At step S 250 , the system controller  4  determines whether the user  200  is actually in trouble. Based on a motion of the user  200  after the user  200  is inquired, the system controller  4  determines whether the user  200  is actually in trouble. A motion performed in response to the inquiry to the user  200  is referred to as a “response motion”. For example, when the user  200  continuously looks at the camera  13  for 10 seconds in response to the inquiry, the system controller  4  determines that the user  200  is actually in trouble. On the other hand, when the user  200  does not perform the motion of continuously looking at the camera  13 , the system controller  4  determines that the user  200  is not in trouble. When positive determination is made at step S 250  that the user  200  is in trouble (Yes at S 250 ), the present control flow proceeds to step S 260 , and when negative determination is made (No at S 250 ), the present control flow proceeds to step S 220 . 
     At step S 260 , the system controller  4  executes control according to the response motion of the user  200 . The system controller  4  gives a warning to the passenger P doing an annoying behavior in accordance with the response motion in which the user  200  looks at the camera  13  for 10 seconds. The system controller  4 , for example, outputs a sound message “Please stop a behavior that is disturbing the other passengers” from the speaker  9  or the directional speaker  8 . After the execution of step S 260 , the present control flow ends. 
     In the individual communication with the user  200 , the system controller  4  may display the inquiry to the user  200  on the personal display  10 . When the personal display  10  outputs highly directional display light, it is possible to make an inquiry to the user  200  without being noticed by the other passengers P. 
     The response motion performed by the user  200  in response to the inquiry from the system controller  4  is not limited to the motion of looking at the camera  13 . The response motion performed by the user  200  may be a motion of pressing the hand button  12 , for example. For example, it is possible to notify a troubled content or a command to the vehicle  100  depending on the number of times the hand button  12  is pressed. Depending on the number of times the hand button  12  is pressed, it is possible to send messages such as “Being in trouble because other passengers are noisy”, “Want to go restroom”, “Want to notify the center supervisor  300  of a certain message”, and “Want to stop the vehicle  100  quickly”. 
     The inquiry to the user  200  may be made by the center supervisor  300 . In such a case, the center supervisor  300  notifies the user  200  to perform the response motion when the user  200  is in trouble. When the user  200  performs the response motion in response to the inquiry, the center supervisor  300  issues a command to the in-vehicle system  2 . For example, when the user  200  performs the response motion indicating that the user  200  is in trouble due to an annoying behavior, the center supervisor  300  issues a command to the in-vehicle system  2  to give a warning against the annoying behavior. 
     As described above, the vehicle management system  1  according to the present embodiment includes the camera  13 , the image processing unit  6 , and the system controller  4 . The camera  13  is an imaging device provided in the vehicle  100  as a shared vehicle. The camera  13  captures the passengers P on the vehicle  100 . The image processing unit  6  serves as a detection unit that detects the user  200 , who is one of the passengers P, has performed the predetermined motion. The image processing unit  6  detects the predetermined motion based on the capturing result by the camera  13 . The predetermined motion is a motion registered in advance by the user  200 . 
     The system controller  4  is a controller that controls the vehicle  100  based on the predetermined command when the predetermined motion has been detected. The predetermined command is a command registered in advance as a command corresponding to the predetermined motion. In accordance with the vehicle management system  1  according to the present embodiment, the user  200  can issue a command to the vehicle  100  without being noticed by the other passengers P. 
     Modified Example of Embodiment 
     The user  200  can issue various commands to the vehicle  100  by using the smartphone  201 . For example, the first predetermined command to the fourth predetermined command may be transmitted to the in-vehicle system  2  by the smartphone  201 . The user  200  may send a demand to the in-vehicle system  2  by a combination of communication by the smartphone  201  and the predetermined motion. 
     The contents disclosed in the aforementioned embodiment and modified example can be implemented by an appropriate combination thereof. 
     The vehicle management system according to the embodiment includes the imaging device provided in the shared vehicle to capture the passengers on the vehicle, the detection unit that detects that a user, who is one of the passengers, has performed a predetermined motion which is a motion registered in advance, based on a capturing result by the imaging device, and the controller that controls the vehicle based on a predetermined command, which is a command registered in advance as a command corresponding to the predetermined motion, when the predetermined motion is detected. In accordance with the vehicle management system according to the embodiment, the predetermined motion registered in advance is performed, so that it is possible to send a demand to the vehicle without being noticed by the other passengers. 
     Although the invention has been described with respect to specific embodiments for a complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art that fairly fall within the basic teaching herein set forth.