Crew Awakening System

Abstract

To provide an occupant awakening system which detects an awakening level of an occupant more accurately to keep the occupant awake more properly.SOLUTION: An occupant awakening system 1 includes: a wearable device W which is attached to an occupant (a driver) riding a vehicle (a vehicle V) and has a first detection part 200A which detects a first awakening level of the occupant; an awakening unit 300 which is provided within the vehicle and provides stimulation to keep the occupant awake; and a control unit 11 which controls the awakening unit 300 based on the first awakening level detected by the first detection part 200A.SELECTED DRAWING: Figure 1

Description

【Technical Field】 【0001】 The present invention relates to an occupant awakening system. 【Background Art】 【0002】 Conventionally, in a vehicle capable of switching between an automatic driving mode and a manual driving mode, there is a driving control device that automatically switches between the automatic driving mode and the manual driving mode. 【0003】 For example, Patent Document 1 discloses a technique for detecting a driver's wakefulness by a biological sensor provided on a seat mounted in a vehicle and determining a switch from an automatic driving mode to a manual driving mode according to the detected wakefulness. 【Prior Art Documents】 【Patent Documents】 【0004】 【Patent Document 1】 International Publication No. 2018 / 235699 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0005】 However, since the biological sensor provided on the seat of the invention of Patent Document 1 detects the wakefulness through the clothes worn by the driver, there is a possibility that the accuracy in detecting the wakefulness is low. 【0006】 The present invention has been made in view of the above circumstances, and an object thereof is to provide an occupant awakening system that can detect an occupant's wakefulness more accurately and prompt the occupant to wake up more appropriately. 【Means for Solving the Problems】 【0007】 In order to solve the above problems, the occupant awakening system according to claim 1 is A wearable device that is attached to a passenger in a vehicle and has a first detection unit that detects a first level of alertness based on the measurement results of the passenger's biometric information, An awakening unit provided inside the vehicle, which provides stimuli to awaken the occupant, Provided in the seat that supports the occupant, the occupant Based on the measurement results of biological information A second detection unit for detecting the second level of arousal, A temperature detection unit that measures at least one of the outside temperature of the vehicle and the inside temperature of the vehicle, A control unit that controls the awakening unit based on the first awakening level detected by the first detection unit or the second awakening level detected by the second detection unit, Equipped with, If the first level of alertness and the second level of alertness do not match, the control unit will determine the temperature measured by the temperature detection unit. When the temperature is below a predetermined first temperature , the first awakening degree The system determines the detected level of alertness and controls the system to drive the alerting unit when the detected level of alertness is less than a predetermined value. 【0008】 The invention described in claim 2 is the crew awakening system described in claim 1, The awakening unit includes at least one of the following: a light source unit that irradiates light onto the occupant, a vibration source unit that vibrates the occupant, a sound source unit that emits sound, and an operating unit that moves a seat that supports the occupant. The invention described in claim 3 is the crew awakening system described in claim 2, The vibration source is provided in at least one of the seat back, seat cushion, and armrest. 【0009】 Claim 4 The invention described herein relates to the crew awakening system described in claim 1 or 2, The system includes a determination unit that determines whether the first level of arousal is equal to or greater than a predetermined first level of arousal threshold. The control unit drives the awakening unit when the determination unit determines that the first level of arousal is less than the first level of arousal threshold. 【0010】 Claim 5 The invention described in the claim 4In the occupant awakening system described in the control unit can switch between the automatic driving and manual driving of the vehicle, and when the determination unit determines that the first arousal level is equal to or higher than the first arousal level threshold, it switches from the automatic driving to the manual driving. 【0011】 Claim 6 The invention described in 4 or 5 In the occupant awakening system described in when the state in which the determination unit determines that the first arousal level is lower than the first arousal level threshold is maintained for a predetermined time, the control unit stops the vehicle. 【0012】 Claim 7 The invention described in 1 or 2 In the occupant awakening system described in before When the vehicle is manually driven, it is determined whether the first arousal level is equal to or higher than a predetermined second arousal level threshold It is equipped with a determination unit. , when the determination unit determines that the first arousal level is lower than the second arousal level threshold, the control unit drives the awakening unit, the second arousal level threshold is When the aforementioned vehicle is driving automatically higher than the first arousal level in threshold. 【0014】 The invention described in claim 8 is 1 In the occupant awakening system described in the second detection unit includes at least one of a heartbeat sensor, a respiration sensor, a pressure sensor, and an electroencephalogram sensor. The invention described in claim 9 is the crew awakening system described in claim 8, The second detection unit is provided in at least one of the seat back, seat cushion, and headrest. <00,00095> 【0016】 The invention described in claim 10 is in the occupant awakening system described in any one of claims 1 to 9, a photographing unit capable of photographing the occupant, The system includes a third detection unit that detects the third level of alertness of the occupant based on the occupant's movements obtained from the image information captured by the aforementioned imaging unit, The control unit, The awakening unit is controlled based on the first level of awakening, the second level of awakening, or the third level of awakening detected by the third detection unit. before The first level of arousal, the second level of arousal, and Before Note: Level 3 of Awakening Based Detection level of alertness of decision In cases where the first level of arousal, the second level of arousal, and the third level of arousal do not match, one of the first level of arousal, the second level of arousal, and the third level of arousal is determined as the detected level of arousal. Furthermore, the system controls the system to drive the awakening unit when the detected level of arousal is less than a predetermined value. [Effects of the Invention] 【0017】 According to the invention described in claim 1, the arousal unit can be controlled based on the level of arousal detected by a wearable device, which is more accurate than the level of arousal detected through the clothing worn by the occupant. Therefore, the occupant can be more effectively prompted to become aroused. Furthermore, since the awakening unit can be controlled based on the more appropriate level of awakening among the first and second levels of awakening, it is possible to more effectively prompt the crew to awaken. Furthermore, based on the temperature measured by the temperature detection unit, the awakening unit can be controlled based on the more appropriate awakening level among the first and second awakening levels, thereby more effectively prompting the crew to awaken. 【0018】 According to the invention described in claim 2, the occupant can be more effectively awakened by any of the light source unit, vibration source unit, sound source unit, or operating unit. According to the invention described in claim 3, vibrations from the vibration source can be appropriately transmitted to an occupant seated in a seat equipped with a seat back, seat cushion, and armrest. 【0019】 Claim 4 According to the invention described above, the awakening unit can be activated when the occupant is unable to operate the vehicle manually, thereby enabling the occupant to be more appropriately awakened. 【0020】 Claim 5 According to the invention described above, the vehicle can be driven safely because it is possible to switch from automatic driving to manual driving when the occupant is in a state where they are fully capable of manual driving. 【0021】 Claim 6According to the invention described above, if the occupant is not in a state where they can adequately operate the vehicle manually even after being continuously urged to stay awake for a predetermined period of time, the vehicle can be stopped. This ensures the safety of the vehicle. 【0022】 Claim 7 According to the invention described above, during manual driving, when a more alert state is required than during automatic driving, the alerting unit can be driven based on a second alertness threshold that is greater than the first alertness threshold. Therefore, higher safety can be ensured during manual driving. 【0024】 According to the invention described in claim 8, the second level of arousal of an occupant can be appropriately detected using the detection result of any of the heart rate sensor, respiration sensor, pressure sensor, or electroencephalogram sensor. According to the invention described in claim 9, the second level of alertness of an occupant seated in a seat equipped with a seat back, seat cushion, and headrest can be appropriately detected. 【0026】 According to the invention described in claim 10, the awakening unit can be controlled based on the most appropriate level of awakening among the first, second, and third levels of awakening, thereby enabling the crew to be awakened more effectively. [Brief explanation of the drawing] 【0027】 [Figure 1] This block diagram shows the schematic configuration of the crew awakening system according to the first embodiment. [Figure 2] This diagram shows an overview of a seat equipped with a seat awakening section. [Figure 3] This diagram shows an overview of the interior components that are equipped with an interior awakening section. [Figure 4] This flowchart shows the flow of the driver monitoring process in the first embodiment. [Figure 5] This flowchart shows the flow of the driver monitoring process in the first embodiment and modified example. [Figure 6] This is a block diagram showing the schematic configuration of the occupant awakening system of the second embodiment. [Figure 7] This diagram shows an overview of a sheet equipped with a biosensor. [Figure 8] This flowchart shows the driver monitoring process flow in the second embodiment. [Figure 9] This is a block diagram showing the schematic configuration of the crew awakening system according to the third embodiment. [Figure 10] This flowchart shows the driver monitoring process flow in the third embodiment. [Figure 11] A schematic diagram showing the occupant awakening system of the fourth embodiment. [Figure 12] This flowchart shows the driver monitoring process flow in the fourth embodiment. [Modes for carrying out the invention] 【0028】 Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below are subject to various technically preferred limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples. 【0029】 <First Embodiment> In this embodiment, the vehicle is an automobile (passenger car: vehicle V (see Figure 3)), and the seat S (see Figure 2) below is a vehicle seat in which the driver sits. However, it is not limited to this, and may also be a vehicle seat for, for example, a ship, airplane, construction vehicle, military vehicle, industrial vehicle, railway vehicle, agricultural vehicle, etc. 【0030】 [Regarding the Crew Awakening System] The occupant awakening system 1 of this embodiment is installed in a vehicle V that can switch between an automatic driving mode and a manual driving mode. As shown in Figure 1, the crew awakening system 1 includes a control device 100, a wearable device W, a smartphone SP, an awakening unit 300, a notification unit 400, an operation control unit 500, and the like. 【0031】 [Regarding the control device] The control device 100 comprises a control unit 11, a storage unit 12, and a communication unit 13. In this embodiment, the control device 100 is provided on the seat S. However, the control device 100 may also be provided on a part of the vehicle other than the seat S. 【0032】 The control unit 11 includes a CPU (Central Processing Unit) and RAM (Random Access Memory), and controls various parts of the control device 100. Specifically, the control unit 11 reads various processing programs stored in the memory unit 12, loads them into RAM, and executes various processes according to those processing programs. 【0033】 Furthermore, the control unit 11 controls the awakening unit 300 based on the first level of awakening detected by the first detection unit 200A, which will be described later. Furthermore, the control unit 11 determines whether the first level of arousal is less than a predetermined first level of arousal threshold. In this case, the control unit 11 functions as a determination unit. 【0034】 The memory unit 12 is composed of, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or an EEPROM (Electrically Erasable Programmable Read Only Memory). The memory unit 12 stores various processing programs executed by the control unit 11, as well as the data necessary for executing these programs. Furthermore, the memory unit 12 stores the first arousal level threshold and the time threshold. 【0035】 The communication unit 13 is capable of transmitting control signals to the awakening unit 300 and the notification unit 400, and of sending and receiving control signals with the operation control unit 500. Furthermore, the communications unit 13 has a short-range communications device 131. The short-range communication device 131 enables short-range wireless communication such as Bluetooth® or Wi-Fi®. The control unit 11 can communicate with the smartphone SP via the short-range communication device 131. 【0036】 The smartphone SP and wearable device W have a CPU, ROM (Read Only Memory), RAM, rewritable non-volatile memory, etc. (not shown), and execute pre-stored programs. 【0037】 [About wearable devices] The wearable device W is a watch-type device worn on the arm of a seated person (driver) sitting in the seat S, and is equipped with a first detection unit 200A. The wearable device W may also be an underwear-type device worn by the driver. The wearable device W has a function to transmit the detection result (first level of arousal) from the first detection unit 200A to the smartphone SP. 【0038】 The first detection unit 200A has an acceleration sensor and detects the driver's state of alertness (first level of alertness) while wearing the wearable device W based on the measurement results of the acceleration sensor. A known method can be used to detect the driver's state of alertness (see, for example, International Publication No. 2021 / 006235). The first level of alertness is defined as a numerical value that increases as the driver becomes more alert, with zero representing the driver in a deep sleep state. Furthermore, if the wearable device W is an underwear-type device, the first detection unit 200A detects the first level of alertness based on the driver's heart rate, pulse, or respiration. 【0039】 [About the Awakening Department] The awakening unit 300 comprises a seat awakening unit 310 and an interior awakening unit 320. The seat awakening section 310 is provided on the seat S, as shown in Figure 2. The seat S includes a seat back S1, a seat cushion S2, a headrest S3, an armrest S4, a wireless power supply unit S5, and the like. 【0040】 The wireless power supply unit S5 is located in the armrest S4 below the vibration source unit 313, which will be described later. The wireless power supply unit S5 is a power transmission device that wirelessly supplies power to the wearable device W when the driver places the arm on which the wearable device W is attached to the armrest S4. If the wearable device W is an underwear-type device, the wireless power supply unit S5 is installed on the seat back S1 or seat cushion S2. In this case, the wireless power supply unit S5 wirelessly supplies power to the wearable device W when the driver sits in the seat S. 【0041】 The seat awakening unit 310 includes a light source unit 311, a sound source unit 312, a vibration source unit 313, and a seat operating unit 314 (operating unit), etc. The seat awakening unit 310 may also include at least one of the light source unit 311, sound source unit 312, vibration source unit 313, and seat operating unit 314. 【0042】 The light source unit 311 is provided, for example, on the headrest S3. The light source unit 311 is a device (for example, an LED light) that can irradiate the driver's head with a strong light that can wake the driver up. 【0043】 The sound source unit 312 is installed, for example, on the upper part of the seat back S1, near the driver's feet on the seat cushion S2, or on the headrest S3. The sound source unit 312 is a device (such as a speaker) that emits sound at a volume sufficient to wake the driver. The sound emitted towards the driver may be music, voice, notification sound, etc. 【0044】 The vibration source unit 313 is provided in the seat back S1, seat cushion S2, or armrest S4. The vibration source unit 313 is a device (for example, a vibration motor) that can transmit strong vibrations to the driver that can wake the driver up. 【0045】 The seat movement unit 314 is a seat movement device capable of moving the seat S itself. Specifically, it is a reclining device for the seat S or a forward / backward sliding device for the seat S. The movement of the seat S may be forward / backward, left / right, rotational, or oscillating. 【0046】 As shown in Figure 3, the interior activation unit 320 is provided on the interior component V0 of the vehicle V. The interior component V0 includes an instrument panel V1, a roof lining V2, a door V3, a navigation device V4, and the like. The navigation device V4 includes a display unit V41 and an audio input / output unit (not shown), etc. 【0047】 The internal awakening unit 320 includes a light source unit 321 and a sound source unit 322, etc. The internal awakening unit 320 may also include at least one of the light source unit 321 and the sound source unit 322. 【0048】 The light source unit 321 is provided, for example, in the instrument panel V1, roof lining V2, or door V3. The light source unit 321 has the same configuration as the light source unit 311. Alternatively, the display unit V41 of the navigation device V4 may be used as a light source unit 321. 【0049】 The sound source unit 322 is provided, for example, in the door V3. The sound source unit 322 has the same configuration as the sound source unit 312. Alternatively, the audio input / output section of the navigation device V4 may be used as the sound source section 322. 【0050】 [About the News Department] The notification unit 400 is, for example, a navigation device V4. The control unit 11 notifies the driver by displaying a predetermined message on the display unit V41. Furthermore, the control unit 11 provides notification to the driver by outputting a predetermined sound from the audio input / output unit of the navigation device V4. 【0051】 If the control device 100 is equipped with a passenger detection means for detecting the presence of a driver in the vehicle V, and the passenger detection means detects the presence of a driver, the control unit 11 determines whether it can communicate with the wearable device W via the smartphone SP. If it cannot communicate with the wearable device W, the control unit 11 controls the notification unit 400 to notify that it cannot communicate with the wearable device W or that the driver is not wearing the wearable device W. Furthermore, if communication with the wearable device W is not possible, the control unit 11 may control the driving control unit 500, which will be described in detail later, to prevent the vehicle V from moving. 【0052】 [Regarding the operation control unit] The driving control unit 500 is composed of a microcomputer including a CPU, ROM, and RAM. Various devices such as brake lights, auxiliary equipment (e.g., turn signals, headlights, wiper devices, etc.) and actuators are connected to the driving control unit 500. The operation control unit 500 controls automatic operation by loading a program pre-stored in ROM into RAM and executing it with the CPU to control the operation of various devices. The operation control unit 500 may be composed of multiple electronic control units. 【0053】 The driving control unit 500 switches between the vehicle V's automatic driving mode (automatic driving) and manual driving mode (manual driving). Manual driving mode is a mode in which the vehicle V is controlled by the driver's actions. The automatic driving mode is a mode in which the driving control unit 500 determines the surrounding conditions of the vehicle V and the condition of the vehicle V itself, and controls the vehicle V. When the driving control unit 500 starts the process of switching the vehicle V from automatic driving mode to manual driving mode, it sends a start signal, which is a control signal, to the control unit 11. Furthermore, when the driving control unit 500 receives a switching permission signal, which is a control signal transmitted from the control unit 11, it switches the vehicle V from automatic driving mode to manual driving mode. Furthermore, when the driving control unit 500 receives a vehicle stop signal, which is a control signal transmitted from the control unit 11, it automatically drives the vehicle V to a waiting area (for example, a service area or parking lot) and stops it. 【0054】 [Regarding the driver monitoring process in the first embodiment] The control unit 11 of the control device 100 executes the driver monitoring process shown in Figure 4 when the vehicle V is running in automatic driving mode and the process of switching to manual driving mode is initiated. 【0055】 In the driver monitoring process, first, the control unit 11 determines whether or not it has received a start signal from the driving control unit 500 (step ST1). If no start signal is received (step ST1; NO), the control unit 11 terminates this process. At this time, the vehicle V maintains the automatic driving mode. If a start signal is received (step ST1; YES), the control unit 11 obtains the detection result (first level of alertness) of the first detection unit 200A from the wearable device W via the smartphone SP (step ST2). 【0056】 Next, the control unit 11 determines whether the first level of alertness obtained in step ST2 is equal to or greater than the first level of alertness threshold (step ST3). The first alertness threshold should be defined as the driver's level of alertness when the driver is fully capable of manual driving. The control unit 11 may perform personal authentication of the driver via communication with the wearable device W and use a value determined for each driver as the first alertness threshold. Alternatively, the control unit 11 may use the first alertness threshold used in the driver monitoring process performed previously as the first alertness threshold. 【0057】 If the first level of arousal is less than the first level of arousal threshold (step ST3; NO), the control unit 11 performs an arousal process (step ST4). In the arousal process, the control unit 11 controls the arousal unit 300 to stimulate the driver and promote arousal. At this time, the control unit 11 may perform the arousal process using either the seat arousal unit 310 or the interior arousal unit 320, or it may perform the arousal process using both the seat arousal unit 310 and the interior arousal unit 320. When the arousal process is performed using both the seat arousal unit 310 and the interior arousal unit 320, a stronger stimulus can be given to the driver. 【0058】 Next, the control unit 11 calculates the stimulation time (the time the driver is stimulated), which is the difference between the current time and the time the awakening process started, and determines whether the stimulation time is equal to or greater than a predetermined time threshold (step ST5). The time threshold is set as a guideline for the time required for the awakening unit 300 to wake up the sleeping driver, and in this embodiment, it is set to about 1 minute. If the stimulation time continues for longer than the time threshold, it is difficult for the awakening unit 300 to wake up the driver. If the stimulation time is less than the time threshold (step ST5; NO), the control unit 11 proceeds to step ST2. In this process, in the second and subsequent steps ST4, a stronger stimulus may be applied to the driver by the arousal unit 300 than in the previous step ST4. In other words, the intensity of the stimulus applied to the driver by the arousal unit 300 may be increased with each subsequent step ST4. 【0059】 Furthermore, if the stimulation time is greater than or equal to the time threshold (step ST5; YES), the control unit 11 transmits a vehicle stop signal to the driving control unit 500 (step ST6) and terminates this process. Upon receiving the vehicle stop signal, the driving control unit 500 moves the vehicle V to a waiting area and stops it before the vehicle V enters a manually operated section provided on the road or in the parking lot. In other words, the control unit 11 stops the vehicle V if the judgment unit determines that the first level of arousal is less than the first level of arousal threshold and this state is maintained for a predetermined time (time threshold). This ensures the safety of vehicle V even when the driver is unable to remain alert. 【0060】 Furthermore, if the first level of alertness is equal to or greater than the first level of alertness threshold (step ST3; YES), the control unit 11 controls the alerting unit 300 to stop the alerting process if it is currently performing the alerting process. When stopping the alerting process, the control unit 11 may gradually reduce the intensity of the stimulation to the driver by the alerting unit 300 until the alerting process is finally stopped. The control unit 11 then sends a switching permission signal to the driving control unit 500 (step ST7) to terminate this process. Upon receiving the switching permission signal, the driving control unit 500 switches the vehicle V from automatic driving mode to manual driving mode. At this time, the driver's level of alertness (first level of alertness) is equal to or greater than the first level of alertness threshold, and the driver is sufficiently alert, so the driver can safely operate the vehicle V manually. 【0061】 Furthermore, if an abnormality such as a communication malfunction or equipment failure occurs in the driver monitoring processing step ST2 described above, and the first level of alertness cannot be obtained from the wearable device W, the control unit 11 may control the notification unit 400 to notify the system of this fact. 【0062】 [Regarding the effects of the first embodiment] The occupant awakening system 1 in the first embodiment includes a wearable device W attached to an occupant (driver) riding in a vehicle (vehicle V) and having a first detection unit 200A for detecting the occupant's first level of arousal; an awakening unit 300 provided inside the vehicle and providing stimuli to encourage the occupant to become aroused; and a control unit 11 that controls the awakening unit 300 based on the first level of arousal detected by the first detection unit 200A. Therefore, the arousal system can be controlled based on the level of alertness detected by a wearable device, which is more accurate than the level of alertness detected through the clothing worn by the crew. This allows for more appropriate guidance to awaken the crew. 【0063】 Furthermore, in the occupant awakening system 1 of the first embodiment, the awakening unit 300 includes at least one of the following: a light source unit 311, 321 that irradiates light onto the occupant, a vibration source unit 313 that provides vibration to the occupant, a sound source unit 312, 322 that emits sound, and an operating unit (seat operating unit 314) that moves the seat S that supports the occupant. Therefore, the occupant can be more effectively awakened by any of the following: the light source, vibration source, sound source, or operating unit. 【0064】 Furthermore, the occupant awakening system 1 in the first embodiment includes a determination unit (control unit 11) that determines whether the first level of awakening is equal to or greater than a predetermined first level of awakening threshold, and the control unit 11 drives the awakening unit 300 when the determination unit determines that the first level of awakening is less than the first level of awakening threshold. Therefore, since the awakening unit can be activated when the occupant is unable to operate the vehicle manually, it is possible to more effectively awaken the occupant. 【0065】 Furthermore, in the occupant awakening system 1 of the first embodiment, the control unit 11 is capable of switching between automatic and manual driving of the vehicle, and switches from automatic driving to manual driving when the determination unit determines that the first level of awakening is equal to or greater than the first level of awakening threshold. Therefore, the vehicle can be driven safely because it can be switched from automatic to manual driving when the occupants are in a condition to operate it manually. 【0066】 Furthermore, in the occupant awakening system 1 of the first embodiment, the control unit 11 stops the vehicle if the state in which the determination unit determines that the first level of awakening is less than the first level of awakening threshold is maintained for a predetermined time (time threshold). Therefore, if the occupant is not in a state where they can adequately operate the vehicle manually even after being continuously urged to wake up for a predetermined period of time (i.e., if it is difficult to wake the occupant), the vehicle can be stopped. This ensures the safety of the vehicle. 【0067】 (modified version) Next, a modified example of the first embodiment will be described. For the sake of clarity, common parts with the first embodiment will be denoted by the same reference numerals, and the description will focus on the components that differ from the first embodiment. 【0068】 In this modified example, vehicle V can only be driven manually by the driver. The memory unit 12 of the control device 100 in this modified example stores a second alertness threshold. The second alertness threshold is defined as the driver's alertness level when the driver is sufficiently capable of manual driving, and it is preferable that it is a larger value than the first alertness threshold in the first embodiment described above. The control unit 11 drives the awakening unit 300 based on the second awakening threshold. This ensures greater safety during manual operation. 【0069】 [Regarding the driver monitoring process in the first embodiment and modified example] The control unit 11 of the control device 100 executes the driver monitoring process shown in Figure 5 when the vehicle V is being driven manually by the driver. 【0070】 In the driver monitoring process of this modified example, first, the control unit 11 performs step ST11, which is the same as step ST2 of the driver monitoring process in the first embodiment. That is, the control unit 11 acquires the first level of alertness. Next, the control unit 11 determines whether the first level of alertness obtained in step ST11 is equal to or greater than the second level of alertness threshold (step ST12). If the first level of alertness is less than the second level of alertness threshold (step ST12; NO), the control unit 11 performs step ST13, which is the same as step ST4 of the driver monitoring process in the first embodiment. In other words, the control unit 11 performs the alertness process. After that, the control unit 11 proceeds to step ST11. 【0071】 Furthermore, if the first level of arousal is equal to or greater than the second level of arousal threshold (step ST12; YES), the control unit 11 determines whether step ST11 has been performed multiple times, that is, whether the control unit 11 has acquired the first level of arousal multiple times (step ST14). If the control unit 11 acquires the first level of alertness only once (step ST14; NO), the control unit 11 proceeds to step ST11. 【0072】 If the control unit 11 acquires the first level of arousal multiple times (step ST14; YES), the control unit 11 determines, based on the results of acquiring the first level of arousal multiple times, whether or not it is predicted that the first level of arousal will become smaller than the second level of arousal threshold in the future (step ST15). It is predicted that the first level of arousal will become smaller than the second level of arousal threshold in the future, for example, if the first level of arousal acquired multiple times is decreasing each time it is acquired. This prediction may be performed by artificial intelligence. This artificial intelligence may be based on any well-known artificial intelligence technology. If it is predicted that the first level of arousal will fall below the second level of arousal threshold in the future (step ST15; YES), the control unit 11 proceeds to step ST13. If it is not predicted that the first level of arousal will fall below the second level of arousal threshold in the future (step ST15; NO), the control unit 11, if it is currently performing the arousal process, controls the arousal unit 300 to stop the arousal process (step ST16) and terminates this process. 【0073】 In the driver monitoring process of the modified version of the first embodiment described above, if the first level of alertness is equal to or greater than the second level of alertness threshold (step ST12; YES), the control unit 11 may omit steps ST14 and ST15. However, it is preferable to perform steps ST14 and ST15 in order to ensure higher safety. 【0074】 [Regarding the effects of the first embodiment and modified version] In the occupant awakening system 1 in a modified version of the first embodiment, the determination unit determines whether the first level of awakening is greater than or equal to a predetermined second level of awakening threshold when the vehicle (vehicle V) is being driven manually, and the control unit 11 drives the awakening unit 300 when the determination unit determines that the first level of awakening is less than the second level of awakening threshold, and the second level of awakening threshold is greater than the first level of awakening threshold. Therefore, during manual driving, when a more alert state is required than during autonomous driving, the alerting unit can be driven based on a second alertness threshold that is greater than the first alertness threshold. As a result, higher safety can be ensured during manual driving. 【0075】 <Second Embodiment> Next, a second embodiment will be described with reference to the drawings. For the sake of clarity, common parts with the first embodiment will be denoted by the same reference numerals, and the description will focus on the components that differ from the first embodiment. 【0076】 As shown in Figure 6, the occupant awakening system 1 in this embodiment further includes a biosensor unit 210B. The control unit 11 of the control device 100 receives the detection result from the biosensor unit 210B via the communication unit 13 and calculates the second level of alertness based on the detection result from the biosensor unit 210B. The second level of alertness is defined as a value that increases as the driver becomes more alert, with zero representing the state of deep sleep. The control unit 11 and the biosensor unit 210B function as the second detection unit 200B. 【0077】 [About the biosensor section] As shown in Figure 7, the biosensor unit 210B includes a heart rate sensor 211B, a respiration sensor 212B, a pressure sensor 213B, and an electroencephalogram (EEG) sensor 214B. The biosensor unit 210B may also include at least one of the heart rate sensor 211B, respiration sensor 212B, pressure sensor 213B, and EEG sensor 214B. 【0078】 The heart rate sensor 211B is located on the front of the seat back S1 and is preferably positioned to correspond to the driver's heart. The heart rate sensor 211B is a sensor that counts the number of times the driver's heart beats within a certain period of time (heart rate), and may be based on any method, such as touch, optical, or electrocardiogram. The respiratory sensor 212B is a sensor that detects the driver's respiratory rate and breathing depth. The respiratory sensor 212B detects the pressure applied by the driver at a position corresponding to the driver's lungs on the front of the seat back S1, and reads the pressure changes caused by the driver's breathing movements. Alternatively, the respiratory sensor 212B may be based on a method in which two sheet-like electrodes are provided along the front of the seat back S1 and the fluctuation of the capacitance between these electrodes due to the movement of the person's chest is detected. The respiratory sensor 212B may be based on any method. The pressure sensor 213B is a sensor used to detect the driver's posture based on the pressure applied to the seat S. The pressure sensor 213B is provided in a planar shape on the surface of the seat cushion S2 and seat back S1 facing the driver, and measures the in-plane distribution of pressure (pressure distribution) applied to them by the driver to detect the driver's posture. The electroencephalogram sensor 214B includes a magnetic sensor positioned on the headrest S3 opposite the driver's head, and detects magnetic signals associated with the activity of the driver's brain cells to calculate the driver's brainwaves. By using the biosensor unit 210B, which includes any of these sensors, the driver's second level of alertness can be appropriately detected. 【0079】 [Regarding the driver monitoring process in the second embodiment] The control unit 11 of the control device 100 executes the driver monitoring process shown in Figure 8 when the vehicle V is running in automatic driving mode and the process of switching to manual driving mode is initiated. 【0080】 In the driver monitoring process of this embodiment, first, the control unit 11 performs step ST21, which is the same as step ST1 of the driver monitoring process in the first embodiment. If a start signal is not received (step ST21; NO), the control unit 11 terminates this process. At this time, the vehicle V maintains the automatic driving mode. If a start signal is received (step ST21; YES), the control unit 11 obtains the detection result (first level of alertness) of the first detection unit 200A from the wearable device W via the smartphone SP. Then, the control unit 11 obtains the second level of alertness by calculating the second level of alertness based on the detection result of the biosensor unit 210B (step ST22). 【0081】 Specifically, if the biosensor unit 210B is equipped with a heart rate sensor 211B, the control unit 11 may compare the driver's heart rate at the start of driving with the driver's heart rate at that time and reduce the second level of alertness according to the degree of decrease in heart rate. If the biosensor unit 210B is equipped with a respiratory sensor 212B, the control unit 11 may compare the driver's respiratory rate at the start of operation with the driver's respiratory rate at that time and reduce the second level of alertness according to the degree of decrease in respiratory rate. If the biosensor unit 210B is equipped with a pressure sensor 213B, the control unit 11 may detect the driver's posture based on the pressure distribution and calculate the driver's second level of alertness according to that posture. If the biosensor unit 210B is equipped with an electroencephalogram (EEG) sensor 214B, the control unit 11 may calculate the driver's second level of alertness based on the driver's EEG waveform. Furthermore, the control unit 11 may calculate the driver's second level of alertness using a combination of heart rate, respiratory rate, pressure distribution, and electroencephalogram. 【0082】 Next, the control unit 11 determines whether the first and second levels of alertness obtained in step ST22 are abnormal values ​​(step ST23). An abnormal value is a value outside a predetermined range, such as a value that is not actually possible. If the first and second levels of alertness are not abnormal values ​​(step ST23; NO), the control unit 11 determines whether the first and second levels of alertness are the same (step ST24). The first and second levels of alertness being the same includes cases where the difference between the first and second levels of alertness is within a predetermined value. If the first level of alertness and the second level of alertness match (step ST24; YES), the control unit 11 sets the matched value as the detected level of alertness (step ST25). Furthermore, if the first level of alertness and the second level of alertness do not match (step ST24; NO), the control unit 11 sets the level with the higher detection accuracy between the first and second levels of alertness as the detected level of alertness (step ST26). This detection accuracy may be set in advance, or it may be determined based on a comparison of the first and second levels of alertness. Also, the first level of alertness obtained from the wearable device W is likely to have higher accuracy than the second level of alertness obtained from the biosensor unit 210B obtained through the driver's clothing. Therefore, the first level of alertness may have higher detection accuracy than the second level of alertness. 【0083】 Next, the control unit 11 determines whether the value used as the detected level of alertness in steps ST25 and ST26 is equal to or greater than the first level of alertness threshold (step ST27). Hereafter, the control unit 11 performs steps ST28 to ST31, which are the same as the driver monitoring processing steps ST4 to ST7 of the first embodiment described above. 【0084】 Furthermore, if at least one of the first and second levels of alertness is an abnormal value (step ST23; YES), the control unit 11 determines whether both the first and second levels of alertness are abnormal values ​​(step ST32). If only one of the first or second level of alertness is an abnormal value (step ST32; NO), the control unit 11 proceeds to step ST26. In step ST26, the control unit 11 detects the alertness level that is not an abnormal value (first alertness level or second alertness level) as the alertness level and performs the following processing. 【0085】 Furthermore, if both the first and second levels of alertness are abnormal (step ST32; YES), the control unit 11 prohibits switching from automatic driving mode to manual driving mode (step ST33). In other words, the control unit 11 will not perform the process of switching from automatic driving mode to manual driving mode in the future. After that, the control unit 11 terminates the process. 【0086】 In addition, in the driver monitoring process of the second embodiment described above, if at least one of the first alertness level and the second alertness level is an abnormal value (step ST23; YES), the control unit 11 may prohibit switching from automatic driving mode to manual driving mode. 【0087】 Furthermore, in the driver monitoring processing step ST22 of the second embodiment described above, if an abnormality such as a communication failure or equipment malfunction occurs and the first or second level of alertness cannot be obtained, the control unit 11 may perform the following processing based on the first or second level of alertness that was obtained. 【0088】 Furthermore, in the driver monitoring process of the second embodiment described above, if only one of the first or second level of alertness is an abnormal value (step ST32; NO), the control unit 11 may replace the abnormal level of alertness (first or second level of alertness) with the level of alertness obtained when step ST22 was performed previously, and perform the following processing. That is, if the first level of alertness is an abnormal value, the first level of alertness obtained previously is used as the first level of alertness for the current process. Also, if the second level of alertness is an abnormal value, the second level of alertness obtained previously is used as the second level of alertness for the current process. 【0089】 Furthermore, in the driver monitoring process of the second embodiment described above, if both the first and second levels of alertness are abnormal values ​​(step ST32; YES), the control unit 11 may use the first level of alertness obtained when step ST22 was performed previously as the current first level of alertness, and the second level of alertness obtained when step ST22 was performed previously as the current second level of alertness. After that, the control unit 11 may perform the processing from step ST24 onwards. 【0090】 Furthermore, in the driver monitoring process of the second embodiment described above, if at least one of the first alertness level and the second alertness level is an abnormal value (step ST23; YES), the control unit 11 may proceed to step ST22 and acquire the first alertness level and the second alertness level again. In this case, if the state in which at least one of the first alertness level and the second alertness level is an abnormal value continues for a predetermined number of acquisitions or more, the control unit 11 may prohibit switching from automatic driving mode to manual driving mode. 【0091】 [Regarding the effects of the second embodiment] In the second embodiment, the occupant awakening system 1 is provided on the seat S that supports the occupant and includes a second detection unit (biosensor unit 210B and control unit 11) that detects the occupant's second level of awakening. The control unit 11 controls the awakening unit 300 based on the first level of awakening or the second level of awakening detected by the second detection unit. Therefore, the awakening unit can be controlled based on the more appropriate level of awakening among the first and second levels of awakening, thereby enabling the crew to be awakened more effectively. 【0092】 In the occupant awakening system 1 of the second embodiment, the second detection unit includes at least one of the heart rate sensor 211B, respiration sensor 212B, pressure sensor 213B, and electroencephalogram sensor 214B. Therefore, the occupant's second level of alertness can be appropriately detected using the detection results from any of the heart rate sensor, respiration sensor, pressure sensor, or electroencephalogram sensor. 【0093】 <Third Embodiment> Next, a third embodiment will be described with reference to the drawings. For the sake of clarity, common parts with the second embodiment described above will be denoted by the same reference numerals, and the description will focus on the components that differ from the second embodiment. 【0094】 As shown in Figure 9, the occupant awakening system 1 in this embodiment further includes a temperature detection unit 200C. The control unit 11 of the control device 100 receives the detection result (measured temperature) of the temperature detection unit 200C via the communication unit 13. 【0095】 [Regarding the temperature detection unit] The temperature detection unit 200C measures at least one of the outside air temperature of the vehicle V and the inside temperature of the vehicle V. When the temperature detection unit 200C detects the ambient temperature of the vehicle V, the temperature detection unit 200C is located on the outside of the vehicle V. When the temperature detection unit 200C detects the interior temperature of the vehicle V, the temperature detection unit 200C is provided on the interior component V0. 【0096】 [Regarding the driver monitoring process in the third embodiment] The control unit 11 of the control device 100 executes the driver monitoring process shown in Figure 10 when the vehicle V is running in automatic driving mode and the process of switching to manual driving mode is initiated. 【0097】 In the driver monitoring process of this embodiment, first, the control unit 11 performs steps ST41 to ST45, which are the same as the driver monitoring process steps ST21 to ST25 of the second embodiment. Furthermore, if the first level of alertness and the second level of alertness do not match (step ST44; NO), the control unit 11 obtains at least one of the outside air temperature of the vehicle V and the inside temperature of the vehicle V (measured temperature) from the temperature detection unit 200C (step ST46). Next, the control unit 11 determines whether the outside temperature or interior temperature obtained in step ST46 is below the first temperature (step ST47). The first temperature is, for example, 5 degrees, but is not limited to this; it can be any temperature at which the driver feels cold. If the outside temperature or the interior temperature is below the first temperature (step ST47; YES), the control unit 11 sets the first level of alertness as the detected alertness level (step ST48). When the outside temperature or the interior temperature is below the first temperature (e.g., 5 degrees), the driver is likely to be wearing thick clothing. In this case, the second level of alertness, based on the detection result of the biosensor unit 210B obtained through the driver's clothing, may be less accurate than the first level of alertness. Therefore, by performing the following processing based on the more accurate first level of alertness, the occupant can be more appropriately alerted. 【0098】 Furthermore, if the outside temperature or the interior temperature is higher than the first temperature (step ST47; NO), the control unit 11 determines whether the outside temperature or the interior temperature is equal to or higher than the second temperature (step ST49). The second temperature is, for example, 30 degrees, but is not limited to this; it can be any temperature at which the driver feels hot. If the outside temperature or the interior temperature is above the second temperature (step ST49; YES), the control unit 11 sets the second level of alertness as the detected alertness level (step ST50). If the outside temperature or the interior temperature is above the second temperature (e.g., 30 degrees Celsius), the driver is likely to be sweating. In this case, the accuracy of the first level of alertness may decrease due to the driver's sweat. Therefore, by performing the following processing based on the more accurate second level of alertness, the occupants can be more appropriately alerted. 【0099】 If the outside temperature and the inside temperature are higher than the first temperature and lower than the second temperature (step ST49; NO), the control unit 11 performs steps ST51 to ST58, which are the same as the driver monitoring processing steps ST26 to ST33 of the second embodiment, and terminates this process. 【0100】 In addition, in the driver monitoring process of the third embodiment described above, the control unit 11 may perform the following processes instead of steps ST46 to ST48. The control unit 11 is connected to the heating device, seat heater, etc., provided by the interior component V0, and acquires the operating status of the heating device, seat heater, etc. The control unit 11 then determines whether the heating device, seat heater, etc., is operating or not, and if it is operating, it sets the first level of alertness as the detected level of alertness. 【0101】 Furthermore, in the driver monitoring process of the third embodiment described above, the control unit 11 may perform the following processes instead of steps ST46, 47, ST49, and ST50. The control unit 11 is connected to the air conditioning unit provided in the interior component V0 and acquires the operating status of the air conditioning unit. The control unit 11 then determines whether or not the air conditioning unit is operating, and if it is operating, it sets the second level of alertness as the detected level of alertness. 【0102】 [Regarding the effects of the third embodiment] In the third embodiment, the occupant awakening system 1 includes a temperature detection unit 200C that measures at least one of the outside air temperature of the vehicle (vehicle V) and the inside temperature of the vehicle (in-vehicle temperature). The control unit 11 controls the awakening unit 300 based on the temperature measured by the temperature detection unit 200C and the first or second awakening level if the first and second awakening levels do not match. Therefore, based on the temperature measured by the temperature detection unit, the awakening unit can be controlled based on the more appropriate awakening level among the first and second awakening levels, thereby more effectively prompting the crew to awaken. 【0103】 <Fourth Embodiment> Next, the fourth embodiment will be described with reference to the drawings. For the sake of clarity, common parts with the second embodiment described above will be denoted by the same reference numerals, and the description will focus on the components that differ from the second embodiment. 【0104】 As shown in Figure 11, the crew awakening system 1 in this embodiment further includes an imaging unit 210D. The control unit 11 of the control device 100 receives the captured image taken by the imaging unit 210D via the communication unit 13 and calculates the third level of alertness based on the captured image. The third level of alertness is defined as a value that increases as the driver becomes more alert, with zero representing the state of deep sleep. In other words, the control unit 11 detects the third level of alertness of the occupant (driver) based on the occupant's (driver's) actions determined from the image information captured by the imaging unit 210D. At this time, the control unit 11 functions as a third detection unit. 【0105】 [About the Photography Department] The camera unit 210D is capable of photographing the occupant (driver) seated in the seat S, and employs a camera. Alternatively, a smartphone or tablet device with a camera function may be used. In this embodiment, the camera, which is the camera unit 210D, is installed, for example, in the roof lining V2. Multiple cameras, which are the 210D shooting unit, may be provided. The imaging unit 210D captures the eyelid movements and body movements of the person seated in the seat S, and transmits the captured images as image information to the control unit 11. The captured images may be still images or videos. 【0106】 [Regarding the driver monitoring process in the fourth embodiment] The control unit 11 of the control device 100 executes the driver monitoring process shown in Figure 12 when the vehicle V is running in automatic driving mode and the process of switching to manual driving mode is initiated. 【0107】 In the driver monitoring process of this embodiment, first, the control unit 11 performs step ST61, which is the same as step ST21 of the driver monitoring process in the second embodiment. If a start signal is not received (step ST61; NO), the control unit 11 terminates this process. At this time, the vehicle V maintains the automatic driving mode. If a start signal is received (step ST61; YES), the control unit 11 obtains the detection result (first level of alertness) of the first detection unit 200A from the wearable device W via the smartphone SP. Then, the control unit 11 obtains the second level of alertness by calculating the second level of alertness based on the detection result of the biosensor unit 210B. Then, the control unit 11 obtains the third level of alertness by calculating the third level of alertness based on the captured image taken by the imaging unit 210D (step ST62). 【0108】 Specifically, the control unit 11 calculates the degree of eye opening (how wide the eyes are open) of the seated person based on the captured image of the seated person. Then, the control unit 11 calculates the third level of alertness based on the calculated degree of eye opening. For example, the control unit 11 defines a state of deep sleep as when the degree of eye opening is zero, and assumes that the third level of alertness increases as the degree of eye opening increases. Furthermore, the control unit 11 calculates the degree of activity of the seated person based on the captured image of the seated person. Then, the control unit 11 calculates the third level of alertness based on the calculated degree of activity of the person. For example, the control unit 11 defines a state of deep sleep as when the degree of activity of the person is zero, and assumes that the third level of alertness increases as the degree of activity of the person increases. 【0109】 Next, the control unit 11 determines whether the first, second, and third levels of alertness obtained in step ST62 are abnormal values ​​(step ST63). If the first, second, and third levels of awakening are not abnormal values ​​(step ST63; NO), the control unit 11 determines whether the first, second, and third levels of awakening are the same (step ST64). The first, second, and third levels of awakening are said to be the same, including cases where the difference between the first, second, and third levels of awakening is within a predetermined value. If the first, second, and third levels of alertness are the same (step ST64; YES), the control unit 11 sets the matching value as the detected level of alertness (step ST65). Furthermore, if the first, second, and third levels of alertness do not match (step ST64; NO), the control unit 11 sets the level of alertness with the highest detection accuracy among the first, second, and third levels of alertness as the detected level of alertness (step ST66). This detection accuracy may be set in advance, or it may be determined based on the results of comparing the first, second, and third levels of alertness. Next, the control unit 11 performs steps ST67 to ST71, which are the same as the driver monitoring processing steps ST27 to ST31 of the second embodiment described above. 【0110】 Furthermore, if at least one of the first, second, and third levels of awakening is an abnormal value (step ST63; YES), the control unit 11 determines whether all three levels of awakening are abnormal (step ST72). If at least one of the first, second, and third awakening levels is not an abnormal value (step ST72; NO), the control unit 11 proceeds to step ST66. In step ST66, the control unit 11 detects a more accurate level of alertness (first level of alertness, second level of alertness, or third level of alertness) rather than an abnormal value as the alertness level, and performs the following processing. 【0111】 Furthermore, if all three levels of alertness (first, second, and third) are abnormal (step ST72; YES), the control unit 11 prohibits switching from automatic operation mode to manual operation mode (step ST73) and terminates this process. 【0112】 In addition, if an abnormality such as a communication failure or equipment malfunction occurs in the driver monitoring processing step ST63 of the fourth embodiment described above, and one of the first, second, and third levels of alertness cannot be obtained, the control unit 11 may perform the following processing based on the first, second, or third level of alertness that was obtained. 【0113】 Furthermore, in the driver monitoring process of the fourth embodiment described above, if at least one of the first, second, and third levels of awareness is not an abnormal value (step ST72; NO), the control unit 11 may replace the abnormal level of awareness (at least one of the first, second, and third levels of awareness) with the level of awareness obtained when step ST62 was performed previously, and perform the following processing. That is, if the first level of awareness was an abnormal value, the first level of awareness obtained previously is used as the first level of awareness for the current process. Also, if the second level of awareness was an abnormal value, the second level of awareness obtained previously is used as the second level of awareness for the current process. Also, if the third level of awareness was an abnormal value, the third level of awareness obtained previously is used as the third level of awareness for the current process. 【0114】 The control device 100 may also include an operating unit such as a switch. In this case, instead of the driver monitoring processing step ST66 of the fourth embodiment described above, the control unit 11 may use the alertness level selected by the seated person via the operation unit from among the first alertness level, second alertness level, and third alertness level as the detected alertness level. 【0115】 Furthermore, instead of the driver monitoring processing step ST66 in the fourth embodiment described above, the control unit 11 may use the alertness level selected by the artificial intelligence from among the first alertness level, second alertness level, and third alertness level as the detected alertness level. This artificial intelligence may be based on any well-known artificial intelligence technology. 【0116】 [Regarding the effects of the fourth embodiment] The occupant awakening system 1 in the fourth embodiment includes a camera unit 210D capable of photographing the occupant, and a third detection unit (control unit 11) that detects the occupant's third level of awakening based on the occupant's movements determined from the image information captured by the camera unit 210D. The control unit 11 controls the awakening unit 300 based on any one of the first level of awakening, the second level of awakening, and the third level of awakening detected by the third detection unit. Therefore, since the awakening unit can be controlled based on the most appropriate level of awakening among the first, second, and third levels of awakening, the crew can be more effectively awakened. 【0117】 The embodiments to which the present invention can be applied are not limited to those described above, and can be modified as appropriate without departing from the spirit of the invention. 【0118】 For example, the wearable device W is not limited to a watch-type device or underwear-type device worn on the wrist; it can be any wearable device that can be attached to various parts of a person, such as a device worn on the driver's head, a device worn on the waist, or a ring-type device. 【0119】 Furthermore, although the above embodiment states that the awakening unit 300 comprises a seat awakening unit 310 and an interior awakening unit 320, it is not limited to this. It may also comprise either the seat awakening unit 310 or the interior awakening unit 320. 【0120】 Furthermore, the awakening unit 300 may include a heat source unit, which is a device for heating or cooling a part of the driver's body. This heat source unit may be, for example, a heater and a Peltier element provided on the headrest S3 for heating or cooling the driver's head. Furthermore, the arousal unit 300 may also include an electrical stimulation source. This electrical stimulation source has two electrodes provided on the surface of the seat back S1 or seat cushion S2 facing the driver, and can provide electrical stimulation to the driver by applying a predetermined voltage between the two electrodes. [Explanation of symbols] 【0121】 S Seat S1 Seatback S2 Seat Cushion S3 Headrest S4 Armrest S5 Wireless Power Supply Unit SP Smartphone V Vehicle V0 Interior components V1 Instrument Panel V2 Roof Lining V3 Door V4 Navigation System V41 Display section W Wearable Devices 100 Control device 11 Control Unit (Decision Unit, Second Detection Unit, Third Detection Unit) 12 Storage section 13 Communications Department 131 Near field communication device 200A First detection unit 200B Second detection unit 210B Biosensor Unit (Second Detection Unit) 211B Heart Rate Sensor 212B Respiratory Sensor 213B Pressure Sensor 214B EEG sensor 200C Temperature detection unit 210D Photography Department 300 Awakening Department 310 Seat Awakening Section 311 Light source section 312 Sound Source Section 313 Vibration source section 314 Seat operation unit (operation unit) 320 Interior Awakening Unit 321 Light source section 322 Sound Source Section 400 News Department 500 Operation Control Unit

Claims

[Claim 1] A wearable device that is attached to a passenger in a vehicle and has a first detection unit that detects a first level of alertness based on the measurement results of the passenger's biological information, An awakening unit provided inside the vehicle, which provides stimuli to awaken the occupant, A second detection unit is provided in the seat that supports the occupant and detects a second level of alertness based on the measurement results of the occupant's biological information, A temperature detection unit that measures at least one of the outside temperature of the vehicle and the inside temperature of the vehicle, A control unit that controls the awakening unit based on the first awakening level detected by the first detection unit or the second awakening level detected by the second detection unit, Equipped with, The control unit controls the crew awakening system to determine the first awakening level as the detected awakening level when the temperature measured by the temperature detection unit is less than or equal to a predetermined first temperature, if the first awakening level and the second awakening level do not match, and to drive the awakening unit when the detected awakening level is less than a predetermined value. [Claim 2] The occupant awakening system according to claim 1, wherein the awakening unit includes at least one of the following: a light source unit for irradiating the occupant with light; a vibration source unit for giving the occupant vibrations; a sound source unit for emitting sound; and an operating unit for moving a seat that supports the occupant. [Claim 3] The occupant awakening system according to claim 2, wherein the vibration source is provided in at least one of the seat back, seat cushion, and armrest. [Claim 4] The system includes a determination unit that determines whether the first level of arousal is equal to or greater than a predetermined first level of arousal threshold. The crew awakening system according to claim 1 or 2, wherein the control unit drives the awakening unit when the determination unit determines that the first level of awakening is less than the first level of awakening threshold. [Claim 5] The occupant awakening system according to claim 4, wherein the control unit can switch between automatic driving and manual driving of the vehicle, and when the determination unit determines that the first level of alertness is equal to or greater than the first level of alertness threshold, the system switches from automatic driving to manual driving. [Claim 6] The occupant awakening system according to claim 4 or 5, wherein the control unit stops the vehicle if the state in which the determination unit determines that the first level of alertness is less than the first level of alertness threshold is maintained for a predetermined period of time. [Claim 7] When the vehicle is being driven manually, the vehicle includes a determination unit that determines whether the first level of alertness is equal to or greater than a predetermined second level of alertness threshold. The control unit drives the awakening unit when the determination unit determines that the first level of arousal is less than the second level of arousal threshold. The occupant awakening system according to claim 1 or 2, wherein the second awakening threshold is greater than the threshold for the first awakening when the vehicle is in autonomous driving mode. [Claim 8] The occupant awakening system according to claim 1, wherein the second detection unit includes at least one of a heart rate sensor, a respiration sensor, a pressure sensor, and an electroencephalogram sensor. [Claim 9] The occupant awakening system according to claim 8, wherein the second detection unit is provided in at least one of the seat back, seat cushion, and headrest. [Claim 10] A camera unit capable of photographing the aforementioned crew members, The system includes a third detection unit that detects the third level of alertness of the occupant based on the occupant's movements obtained from the image information captured by the aforementioned imaging unit, The control unit controls the awakening unit based on the first awakening level, the second awakening level, or the third awakening level detected by the third detection unit. A crew awakening system according to any one of claims 1 to 9, wherein the detected awakening level is determined based on the first awakening level, the second awakening level, and the third awakening level, and if the first awakening level, the second awakening level, and the third awakening level do not coincide, one of the first awakening level, the second awakening level, and the third awakening level is determined to be the detected awakening level, and the system is controlled to drive the awakening unit when the detected awakening level is less than a predetermined value.

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