JP2005204871A - Electric motor vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric motor vehicle where a seating sensor detects sitting of a rider without erroneous detection about the electric motor vehicle travelling with a motor as a driving source. <P>SOLUTION: A piezoelectric sensor 8 is arranged at a seat 6, and a sitting decision means 9 decides sitting of the rider by detecting the body movement of the rider on the seat based on an output signal from the sensor 8. Based on the decided result, a control means 12 controls the operation of a vehicle main body 1. Since the rider has body movement but matters such as baggage never moves, by deciding sitting of the rider by detecting his/her body movement, sitting of the rider is reliably detected without erroneous detection and the operation of the vehicle main body 1 can be controlled. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electric vehicle that travels using a motor as a drive source.

  Conventionally, this type of electric vehicle is also called an electric cart or a senior car. When the seating sensor installed on the seat does not detect the seating of an occupant, the accelerator lever is not unlocked. (For example, refer to Patent Document 1).

FIG. 9 shows a conventional electric vehicle described in the publication. As shown in FIG. 9, the vehicle body 1 includes a pair of left and right front wheels 2, a pair of left and right rear wheels 3, a handle portion 4, an accelerator lever 5, a seat 6, and a seating sensor 7. ing. The seating sensor 7 detects the weight of the occupant.
JP 2002-274471 A

  However, since the seating sensor 7 detects the weight of the occupant in the conventional configuration, when an object such as a luggage is placed on the seat, the seating sensor 7 erroneously detects the seating due to the weight of the object and the accelerator lever 5 is locked. There was a problem that it was canceled unnecessarily.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide an electric vehicle that detects the presence of an occupant without erroneously detecting a seating sensor.

  In order to solve the above-described conventional problems, an electric vehicle according to the present invention is provided with a piezoelectric sensor in a seat, detects the movement of an occupant on the seat based on an output signal of the piezoelectric sensor, and occupants are seated. And the operation of the vehicle body is controlled based on the determination result.

  As a result, the occupant has body movement, and an object such as a baggage does not have body movement, so by detecting the body movement and determining the occupant's presence, it is ensured that the occupant is seated without erroneous detection. Is detected to control the operation of the vehicle body.

  In the electric vehicle according to the present invention, the occupant has a body movement, and an object such as a luggage does not have a body movement. Therefore, by detecting the body movement and determining the presence of the occupant, it is possible to reliably detect without erroneous detection. It is possible to control the operation of the vehicle body by detecting the presence of a passenger.

  According to a first aspect of the present invention, a piezoelectric sensor is provided in the seat, and the presence determination means detects the body movement of the passenger on the seat based on the output signal of the piezoelectric sensor, determines the presence of the passenger, and the determination result The control means controls the operation of the vehicle main body based on the above, so that the occupant has body movement and the object such as luggage does not have body movement, so the body movement is detected and the presence of the occupant is determined. Thus, it is possible to reliably detect the presence of an occupant and to control the operation of the vehicle body without erroneous detection.

  In the second invention, in particular, the piezoelectric sensor according to the first invention is flexible and molded into a cable shape, so that it can be flexibly disposed on the seat and the degree of freedom in layout is improved. can do.

  According to a third aspect of the invention, in particular, the presence determination means of the first aspect of the invention or the second aspect of the invention detects body movement based on at least one of the occupant's heartbeat and respiration to determine the occupant's presence. Since the presence of the occupant is determined by detecting body movements based on life activity such as heartbeat and breathing, it is possible to determine the occupancy of the occupant with a clearer distinction from non-life objects such as luggage. .

  In the fourth aspect of the invention, in particular, the presence determination unit of the first aspect of the invention or the second aspect of the invention detects the natural vibration of the occupant's body due to the vibration during the traveling and determines the occupant's occupancy. It is possible to reliably determine the presence of the passenger.

  In the fifth invention, in particular, the presence determination means of any one of the first to fourth inventions removes a frequency component based on the natural vibration of the vehicle body from the output signal of the piezoelectric sensor, and By determining the presence, the frequency component based on the natural vibration of the vehicle body, that is, the noise component unnecessary for the determination is removed from the output signal of the piezoelectric sensor, and only the signal based on the occupant's body movement is extracted to be present Therefore, the reliability of presence determination can be improved.

  In the sixth invention, in particular, when the presence of the control means of any one of the first to fifth inventions is determined by the presence determination means, the vehicle body is not allowed to travel. This eliminates unnecessary traveling when the seat is absent and improves safety.

  According to a seventh aspect of the invention, in particular, in the sixth aspect of the invention, the determination invalidating means for permitting the vehicle body to travel by the user's operation regardless of the determination of the presence determination means, so that the determination invalidating means even when absent. By actuating, for example, it is possible to move a load on a seat or to move a place while the electric vehicle is stored, thereby improving usability.

  In the eighth invention, in particular, the control means of the third invention calculates at least one of the occupant's heart rate and respiratory rate based on the occupant's body motion signal detected by the presence determination means, If at least one of the respiratory rates deviates from a preset range for each, an alarm is generated. The presence or absence of abnormalities is determined based on the heart rate and breathing rate of the passenger, and if there is an abnormality, the passenger is alerted to the passenger and the surrounding people, so there is a sense of security for the user in case of an emergency. improves.

  In the ninth invention, in particular, the control means of the third or eighth invention calculates at least one of the heart rate and breathing rate of the occupant based on the occupant's body motion signal detected by the presence determination means. If at least one of the heart rate and the respiratory rate deviates from a preset setting range for each, the traveling of the vehicle body is stopped because an abnormality has occurred in the occupant. Then, the presence / absence of an abnormality is determined based on the heart rate and respiratory rate of the occupant, and if there is an abnormality, the vehicle body stops traveling, so that the user's sense of security is further improved in case of an emergency.

  In a tenth aspect of the invention, in particular, the control means according to any one of the third aspect, the eighth aspect, and the ninth aspect of the invention is based on the occupant's body motion signal detected by the presence determination means. When at least one of heart rate and respiration rate is calculated, and at least one of heart rate and respiration rate deviates from a preset setting range for each, it is determined that an abnormality has occurred in the occupant. Report to an external reporter. Then, the presence or absence of abnormalities is determined based on the occupant's heart rate and respiratory rate, and if there are abnormalities, a notification is made to a preset external reporting destination, so the user's sense of security is further improved in case of an emergency. To do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the present embodiment.

(Embodiment 1)
FIG. 1A is a perspective view of a seat of an electric vehicle according to the first embodiment of the present invention, and FIG. 1B is a cross-sectional view at the position AA in FIG. The electric vehicle is assumed to be similar to that shown in FIG. 9, for example. In FIG. 1A, a flexible cable-like piezoelectric sensor 8 is arranged in a meandering manner in a seat 6. In FIG. 1B, the seat 6 includes a cover portion 6a, a cushion portion 6b, and a support portion 6c, and the piezoelectric sensor 8 is disposed in a groove portion 6d provided on the cover portion 6a side of the cushion portion 6b.

  FIG. 2A is a configuration diagram of the piezoelectric sensor 8 and the presence determination means 9, and FIG. 2B is a cross-sectional view at the BB position in FIG. 2A. In FIG. 2A, the piezoelectric sensor 8 includes a distal end portion 8a in which a resistor for detecting disconnection / short-circuiting of electrodes, which will be described later, is built, and a flexible, cable-shaped sensing portion 8b. The presence determination unit 9 is connected to the sensing unit 8b, and determines the presence of the occupant by detecting the body movement of the occupant on the seat 6 based on the output signal of the piezoelectric sensor 8. A power source and a determination output cable 10 are connected to the presence determination means 9, and a connector portion 11 is provided at the tip of the cable 10. The connector part 11 is connected to the control means of the electric vehicle mentioned later.

  2B, the sensing unit 8b includes a central electrode 81 made of a conductor, a piezoelectric layer 82, an outer electrode 83 made of a conductor, and a coating layer 84 made of an elastic body. The piezoelectric layer 18 may be made of a resin-based polymer piezoelectric material such as polyvinylidene fluoride. However, the upper limit of the heat-resistant temperature is about 80 ° C., and the electric vehicle is mainly used outdoors, especially in summer. Since the surface temperature of the seat sometimes becomes a high temperature close to 100 ° C. due to direct sunlight, it is not preferable to use a polymer piezoelectric material. As the piezoelectric layer 18, when a composite piezoelectric material in which a piezoelectric ceramic powder is mixed in a specific resin base material is used, it can have a high temperature durability of 100 ° C. or higher, and such a composite piezoelectric material is used. Is preferred.

  FIG. 3 is a block diagram of the electric vehicle according to the first embodiment of the present invention. In FIG. 3, the presence determination means 9 filters the output signal from the piezoelectric sensor 8 with a predetermined filtering characteristic, and amplifies with a predetermined amplification degree, and a first filter unit 9a. The second filter unit 9b that further filters the output signal of 9a with a predetermined filtering characteristic and amplifies the signal with a predetermined amplification degree, and the output signal VF1 of the first filter unit 9a is set to a preset set value V1. , V2, a first comparator unit 9 c that compares the output signal VF2 of the second filter unit 9 b with preset setting values V1 and V2, and a first comparator unit 9 c And a determination unit 9e that determines the presence of an occupant on the seat 6 based on the output signals VC1 and VC2 of the second comparator unit 9d.

  The presence determination unit 9 is connected to the control unit 12 via the cable 10 and the connector unit 11 described above. The control unit 12 controls the drive unit 13 and the alarm unit 14 that drive the electric vehicle. Further, the control means 12 is connected with a determination invalidation means 15 that permits the vehicle body to travel by a user's operation regardless of the determination by the presence determination means 9. The determination invalidation means 15 is installed in the handle part 4, for example.

  About the electric vehicle comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the main power supply of the vehicle body 1 is turned on, and when the occupant sits on the seat 6, the piezoelectric sensor 8 disposed on the seat 6 is deformed by the body movement based on the movement of the occupant, and the piezoelectric effect causes the deformation acceleration. A voltage signal is output from the piezoelectric sensor 8. The output signal of the piezoelectric sensor 8 is filtered with a predetermined filtering characteristic by the first filter unit 9a of the presence determination means 9, and is amplified with a predetermined amplification degree. The filtering characteristics can be obtained experimentally. For example, a low-pass filter having a pass frequency of 10 Hz or less is preferable. The degree of amplification can also be determined experimentally, and body movement based on the movement of the occupant can be detected by several tens to several hundreds of times. However, depending on the material of the seat 6, the position of the piezoelectric sensor 8, the position pattern, etc. Determine the optimal amplification.

  The output signal VF1 of the first filter section 9a is compared with preset values V1 and V2 (V2 is greater than V1) by the first comparator section 9c, and VF1 is less than or equal to V1 or VF1 is If V2 or higher, Hi and VF1 are larger than V1, and if VF1 is smaller than V2, Lo comparison signal VC1 is output.

  FIG. 4 is a characteristic diagram showing VF1 and VC1 when the occupant sits and leaves. In FIG. 4, S1 corresponds to a seating operation, S2 corresponds to an operation such as a limb, and S3 corresponds to a separation operation. In the absence, VF1 is the reference potential V0, and a signal having a large amplitude that is V1 or less or V2 or more is generated corresponding to each operation of the occupant. And based on such VF1, VC1 becomes Lo in a pulse shape corresponding to each operation of Lo and the occupant when absent or when there is no operation.

  Next, in the second filter unit 9b of the presence determination means 9, the output signal of the first filter unit 9a is further filtered with a predetermined filtering characteristic, and is amplified with a predetermined amplification degree. The output signal VF2 of the second filter unit 9b is compared with preset values V3 and V4 (V4 is greater than V3) by the second comparator unit 9d, and VF2 is equal to or lower than V3, or VF2 is If V4 or higher, Hi and VF2 are larger than V3, and if VF2 is smaller than V4, Lo comparison signal VC2 is output.

  FIG. 5 is a characteristic diagram showing VF2 and VC2 when the occupant is resting, and the waveform of VF2 corresponds to an enlarged portion of S4 in FIG. In FIG. 5, a signal having a large amplitude periodically appears in VF2, which corresponds to a minute body movement of the body due to the occupant's heartbeat activity detected by the piezoelectric sensor 8. As long as the occupant is present, there is such a body movement due to the heartbeat activity, so that the presence determination can be performed reliably by detecting this. The output signal VC2 of the second comparator unit 9d becomes Hi in a pulse shape corresponding to the body movement due to the above heartbeat activity. The filtering characteristics of the second filter unit 9b are preferably a 4 to 6 Hz band-pass filter. Further, since the amplification degree detects body movement due to heartbeat activity, the amplification degree of the first filter unit 9a and the second filter unit 9b is about several thousand times to several tens of thousands times. Also in this case, the optimum amplification degree is determined depending on the material of the seat 6, the arrangement position of the piezoelectric sensor 8, the arrangement pattern, and the like.

  Based on VC1 and VC2 output as described above, the determination unit 9e of the presence determination unit 9 determines the presence of an occupant on the seat 6. FIG. 6 is a flowchart showing the determination procedure at this time. In FIG. 6, when the main power supply is turned on in step ST1, it starts from determination of absence in step ST2. Next, in step ST3, it is determined whether or not VC1 is Hi. If VC1 is Lo, the absence determination is continued. On the other hand, as shown in FIG. 4, when VC1 becomes Hi based on the seating motion of the occupant, the presence determination is made in step ST4. When the presence determination is made in step ST4, it is determined whether or not VC2 is Lo for a set time t1 or more set in advance in step ST5. Here, t1 is set to a time larger than the time required for one beat of the heartbeat. That is, as shown in FIG. 5, if there is body movement due to heartbeat activity and VF2 is V3 or less, or VF2 is V4 or more, pulse-like Hi appears intermittently in VC2, so the presence determination is continued. The On the other hand, when the occupant is separated from the seated state, a signal with a large amplitude due to the separation operation appears in VF2, and then the body movement due to the heartbeat activity is lost, so the signal is attenuated, VF2 is greater than V3, and , VF2 becomes smaller than V4, VC2 continues at Lo, and VC2 becomes Lo for t1 or more, so absence is determined at step ST2. Thereafter, the same determination process is performed in steps ST2 to ST5.

  In the above description, the second filter unit 9b is configured to detect minute body movements due to heartbeats. For example, the filter characteristic is 0.1 to 1 Hz, and minute body movements due to breathing are detected to determine presence. It is good also as a structure which performs a presence determination by providing both a several filter and detecting both a heartbeat and a respiration.

  Based on the output signal from the presence determination means 9, the control means 12 disallows driving of the drive means 13 in the case of absence, and prevents the vehicle from running even if the accelerator lever 5 is operated. On the other hand, in the case of the presence determination, the drive of the drive means 13 is permitted and the vehicle can run by operating the accelerator lever 5. Further, when the occupant stands up while pushing the accelerator lever 5 while traveling, a determination of absence is made, so that the driving of the driving unit 13 is not permitted by the control unit 12 and the traveling is stopped. In this case, an alarm may be generated from the alarm means 14 before the traveling stop to warn the unnecessary use state to prompt the user to sit down, or a warning may be given to the driver to stop traveling. improves. Further, when the determination invalidating means 15 is activated by the user's operation, the control means 12 permits the vehicle body to travel by the user's operation regardless of the determination by the presence determination means 9.

  As described above, in the present embodiment, a piezoelectric sensor is provided in the seat, and the presence determination means detects the body movement of the passenger on the seat based on the output signal of the piezoelectric sensor, and the presence of the passenger Since the control means controls the operation of the vehicle body based on the determination result, the occupant has body movement, and the object such as luggage does not have body movement. By determining the presence, it is possible to reliably detect the presence of an occupant and to control the operation of the vehicle body without erroneous detection.

  In addition, since the piezoelectric sensor is flexible and molded into a cable shape, the piezoelectric sensor can be flexibly disposed in the seat, and the degree of freedom in layout can be improved.

  In addition, by detecting body movement based on at least one of the heartbeat and breathing of the occupant and determining the presence of the occupant, body movement based on life activity such as heartbeat and breathing is detected to determine the occupant's presence. Therefore, it is possible to determine the presence of an occupant with a clearer distinction from non-life objects such as luggage.

  Further, when the presence of the seat is determined by the presence of the control means, the travel of the vehicle body is not permitted, thereby eliminating unnecessary travel when the seat is absent and improving safety.

  In addition, by providing a determination invalidation means that allows the vehicle body to travel by the user's operation regardless of the presence determination means, by operating the determination invalidation means even when absent, for example, a baggage can be placed in the seat It can be placed and moved, or moved from place to place while the electric vehicle is housed, which improves usability.

(Embodiment 2)
FIG. 7 is a block diagram of an electric vehicle according to the second embodiment of the present invention. In FIG. 3, the difference from the first embodiment is that the presence determination means 9 determines the presence based on the output from the travel detection means 16 that detects the travel of the electric vehicle.

  About the electric vehicle of the said structure, the operation | movement and an effect | action are demonstrated below.

  During traveling, traveling vibration is applied to the occupant due to unevenness of the road surface, and the signal of the second filter unit 9b is saturated, and a body motion signal due to a heartbeat may not be detected. Therefore, in the present embodiment, the presence determination unit 9 determines presence based on the output from the travel detection unit 16 while distinguishing between stopping and traveling. That is, since the vehicle is not affected by the traveling vibration while the vehicle is stopped, the presence determination is performed as in the first embodiment. On the other hand, in the case of determination of presence while traveling, the presence determination is performed by newly setting a setting value in the first comparator unit 9c. This will be described with reference to the accompanying drawings.

  FIG. 8 is a characteristic diagram showing VF1 and the output signals VC1a and VC1b of the first comparator section 9c when the occupant is seated or separated. In FIG. 8, V5 and V6 are provided as new setting values (V6 is greater than V5). VC1a is Hi if VF1 is V1 or less, or VF1 is V2 or more, VF1 is greater than V1, and If VF1 is smaller than V2, Lo comparison signal is output. VC1b outputs a comparison signal of Hi if VF1 is V5 or less, or if VF1 is V6 or more, Lo is greater than V5, and if VF1 is less than V6, Lo.

  For example, as shown in FIG. 8, when an occupant is seated in S5 and the electric vehicle starts to travel, a signal based on body vibration due to travel vibration appears in VF1 as in S6. When an occupant unnecessarily lifts his / her seat from the seat and stands on the vehicle body in S7, a signal with a large amplitude is generated by the operation, and then a signal based on the vibration of the vehicle body due to running vibration is generated as in S8. Since the amplitude of this signal is larger than the signal of body movement due to heartbeat, the presence determination is continued in the determination procedure similar to that of the first embodiment, and the vehicle travels unnecessarily while standing on the vehicle body. It becomes.

  Therefore, in the present embodiment, it is determined that the vehicle is absent if the VC1b becomes Lo for more than a preset set time t2 during traveling. t2 is set in the range of several seconds to several tens of seconds in consideration of the rise during traveling. As a result, as shown in FIG. 8, by determining the absence in S9, the control unit 12 stops driving the driving unit 13 and stops traveling.

  In this case, the first filter unit 9a can detect the natural vibration of the body of the filter so that the vibration of the running body can be detected as easily as possible. Specifically, a low-pass filter having a pass frequency of 10 Hz or less is preferable, and a band-pass filter of 4 to 6 Hz is particularly preferable. Further, in order to avoid detecting vibration of the vehicle body as much as possible, a frequency component based on the characteristic vibration of the vehicle body is removed from the filter characteristics. Specifically, vibration data is collected by an actual vehicle running test or the like, a natural frequency is obtained by frequency analysis, and a notch filter having the obtained natural frequency as a center frequency may be added to the first filter unit 9a.

  As described above, in the present embodiment, the presence determination unit detects the natural vibration of the occupant's body due to vibration during traveling and determines the occupant's presence, thereby determining the presence of the occupant during traveling. It can be determined with certainty.

  Further, the presence determination means removes the frequency component based on the natural vibration of the vehicle body from the output signal of the piezoelectric sensor and determines the presence of the occupant, whereby the frequency based on the natural vibration of the vehicle body is determined from the output signal of the piezoelectric sensor. Since the component, that is, the noise component unnecessary for the determination is removed and only the signal based on the occupant's body movement is extracted to determine the presence, the reliability of the presence determination can be improved.

(Embodiment 3)
In the present embodiment, at least one of the occupant's heart rate and respiratory rate is calculated based on the occupant's body motion signal detected by the second filter unit 9b of the presence determination means 8, and the heart rate and respiratory rate are calculated. When at least one deviates from a preset range for each, an alarm is generated. As a method for calculating the heart rate and the respiration rate, a known method may be used such as smoothing and then comparing with a threshold value and converting to a pulse train to count pulses, or calculating an autocorrelation coefficient. With this configuration, the presence / absence of an abnormality is determined based on the heart rate and breathing rate of the occupant, and if there is an abnormality, the occupant and others are notified by an alarm, so the user can be assured in case of an emergency. A feeling improves.

  Further, when at least one of the calculated heart rate and respiration rate deviates from a preset setting range for each, it may be configured that the traveling of the vehicle main body is stopped because an abnormality has occurred in the occupant. The presence or absence of an abnormality is determined based on the occupant's heart rate and respiratory rate, and if there is an abnormality, traveling of the vehicle main body is stopped.

  Further, when at least one of the calculated heart rate and respiration rate deviates from a preset setting range for each of them, it may be configured to report to a preset external report destination that an abnormality has occurred in the occupant. . The presence or absence of abnormality is determined based on the occupant's heart rate and respiratory rate, and if there is an abnormality, a notification is made to a preset external reporting destination, so that the user's sense of security is further improved in case of an emergency.

  As described above, the electric vehicle according to the present invention detects the body movement and determines the presence of the occupant, thereby reliably detecting the occupant's presence without erroneous detection and operating the vehicle body. Since it can be controlled, it can also be applied to control of self-propelled vehicles such as electric wheelchairs, forklifts, and tractors.

(A) Perspective view of the seat of the electric vehicle according to the first embodiment of the present invention (b) Sectional view at the position AA in FIG. (A) Configuration diagram of piezoelectric sensor 8 and presence determination means 9 (b) Sectional view at BB position in FIG. The block diagram of the electric vehicle in the 1st Embodiment of this invention Characteristic diagram showing VF1 and VC1 when the occupant sits and leaves Characteristic chart showing VF2 and VC2 when the passenger is seated Flow chart showing determination procedure of presence determination means 9 The block diagram of the electric vehicle of the 2nd Embodiment of this invention Characteristic diagram showing VF1 and the output signals VC1a and VC1b of the first comparator unit 9c when the occupant sits and leaves Configuration diagram of a conventional electric vehicle

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle body 6 Seat 8 Piezoelectric sensor 9 Presence determination means 12 Control means 15 Determination invalidation means

Claims (10)

A piezoelectric sensor disposed in a seat of a vehicle body that can be driven electrically, and presence determination means for detecting a passenger's body movement on the seat based on an output signal of the piezoelectric sensor to determine the presence of the passenger And an electric vehicle comprising control means for controlling the operation of the vehicle body based on an output signal of the presence determination means. The electric vehicle according to claim 1, wherein the piezoelectric sensor is flexible and molded into a cable shape. The electric vehicle according to claim 1, wherein the presence determination unit determines the presence of the occupant by detecting a body movement based on at least one of the occupant's heartbeat and respiration. The electric vehicle according to claim 1 or 2, wherein the presence determination means determines the presence of the occupant by detecting a natural vibration of the occupant's body due to vibration during traveling. The electric vehicle according to any one of claims 1 to 4, wherein the presence determination means determines the presence of an occupant by removing a frequency component based on a natural vibration of the vehicle body from an output signal of the piezoelectric sensor. The electric vehicle according to any one of claims 1 to 5, wherein the control means disallows running of the vehicle main body when the absence determination is performed by the presence determination means. The electric vehicle according to claim 6, further comprising a determination invalidating unit that permits the vehicle body to travel by a user operation regardless of the presence determination unit. The control means calculates at least one of the occupant's heart rate and respiration rate based on the occupant's body motion signal detected by the presence determination means, and at least one of the heart rate and respiration rate is preset for each. The electric vehicle according to claim 3, wherein an alarm is generated when an abnormality occurs in an occupant when the set range is deviated. The control means calculates at least one of the occupant's heart rate and respiration rate based on the occupant's body motion signal detected by the presence determination means, and at least one of the heart rate and respiration rate is preset for each. The electric vehicle according to claim 3 or 8, wherein when the vehicle deviates from the set range, the vehicle body stops traveling because an abnormality has occurred in an occupant. The control means calculates at least one of the occupant's heart rate and respiration rate based on the occupant's body motion signal detected by the presence determination means, and at least one of the heart rate and respiration rate is preset for each. The electric vehicle according to any one of claims 3, 8, and 9, wherein when the vehicle deviates from the set range, an abnormality is generated in an occupant, and a preset external report destination is notified.

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