JP2018157381A - Control device of motor in electric vehicle, electric lock mechanism, and electric vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device of a motor having an electric lock function with high convenience while maintaining an antitheft effect, an electric lock mechanism, and an electric vehicle with the electric lock mechanism.SOLUTION: A controller 10 of a motor 51 in a power-assisted bicycle 2 assists in advancing or travelling of the power-assisted bicycle 2. The controller 10 includes: a receiving unit 13 capable of receiving communication signals which can be transmitted and received by human-body communication from a plurality of signal receiving units; and a control unit 11 for detecting reception of a communication signal and generating and outputting a drive signal of the motor. The control unit 11 controls rotation of the motor according to detection of the reception of the communication signal.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a technique for electrically setting or releasing a lock on an electric vehicle such as an electric assist bicycle, an electric motorcycle, and an electric wheelchair.

  In general, with respect to electric vehicles such as electric assist bicycles and electric motorcycles, it is known that the electric assist function is stopped based on authentication using a portable terminal (for example, see Patent Document 1) or electrically locked. (See, for example, Patent Document 2 (paragraph 0002)). Moreover, in an electrically assisted bicycle, it is known that a motor device is driven or not driven based on authentication using human body communication (see, for example, Patent Document 3).

Japanese Patent Laid-Open No. 2006-171645 Special table 2013-525200 gazette JP2015-97342A

  A vehicle such as a bicycle frequently repeats running, stopping, and getting on and off by a user. In the prior art, authentication for releasing an electric lock of a bicycle before traveling is disclosed. However, there is a possibility that security and convenience are not sufficiently ensured through use of the bicycle.

  An object of the present invention is to provide a motor control device, an electric lock mechanism, and an electric vehicle with an electric lock mechanism that have a highly convenient electric lock function while maintaining an antitheft effect.

  A motor control device for an electric vehicle according to an exemplary embodiment of the present application is a motor control device for propelling or assisting driving of the electric vehicle, and includes a receiving unit and a control unit. The receiving unit receives a communication signal. The control unit detects reception of the communication signal, generates a motor drive signal, and outputs it. The communication signal is a signal that can be transmitted and received by human body communication, and the receiving unit can receive communication signals from a plurality of signal receiving units. The control unit controls rotation of the motor in response to detection of reception of the communication signal.

  An electric lock mechanism according to an exemplary embodiment of the present application includes a motor control device, a transmitter for transmitting a communication signal, a receiver having a plurality of signal reception units, and a motor based on a signal from the control device. A drive circuit to be driven and a motor are provided.

  An electric vehicle according to an exemplary embodiment of the present application includes the electric lock mechanism.

  According to an exemplary embodiment of the present application, it is possible to provide a motor control device, an electric lock mechanism, and an electric vehicle with an electric lock mechanism that have a highly convenient electric lock function while maintaining an anti-theft effect. it can.

FIG. 1 shows the external appearance of an electrically assisted bicycle equipped with an electric lock mechanism. FIG. 2 is a schematic configuration diagram of an electric lock mechanism including a motor control device. FIG. 3 is a schematic configuration diagram of a motor control device. FIG. 4 is a flowchart showing the operation of the motor control apparatus according to the first embodiment. FIG. 5 is a flowchart showing the operation of the motor control apparatus according to the second embodiment. FIG. 6 is a flowchart showing the operation of the motor control apparatus according to the third embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the scope of the present invention is not limited to the following embodiments, and can be arbitrarily changed within the scope of the technical idea of the present invention.

  In the following description, an electrically assisted bicycle (hereinafter sometimes simply referred to as a bicycle) will be described as an example of the electrically powered vehicle.

(Embodiment 1)
[1-1. Constitution]
FIG. 1 schematically shows the external appearance of an electrically assisted bicycle 2 provided with an electric lock mechanism 1 according to the present embodiment. FIG. 2 schematically shows the configuration of the electric lock mechanism 1.

  An electrically assisted bicycle 2 (an example of an electrically powered vehicle) shown in FIG. 1 includes an electric lock mechanism 1 whose structure is shown in FIG. 2 in addition to components included in a normal bicycle such as a main body, wheels, pedals, and chains. As shown in FIG. 2, the electric lock mechanism 1 (an example of an electric lock mechanism) includes a transmitter 30 worn by a user 3, a receiver 20 attached to a bicycle body, a control device 10, and a motor device 50. In FIG. 1, the arrangement of the transmitter 30, the receiver 20, the control device 10, and the motor device 50 is exemplary, and may be changed as appropriate according to the type of the electrically assisted bicycle 2 and the convenience of the user. Also good.

  The transmitter 30 and the receiver 20 are capacitively coupled to the human body via electrodes, and modulate the electric field near the body of the user 3 through this coupling, or read and demodulate the modulated electric field. To communicate. In this example, an AC electric field signal (communication signal) induced on the surface of the human body 4 of the user 3 by the transmitter 30 is received by the receiver 20. In the human body communication by this method (electric field method), even if the transmitter 30 is in the pocket of the clothes of the user 3 or the user 3 is wearing gloves, the signal is transmitted through the human body surface. Can communicate between aircraft. That is, communication between the transceivers is possible even if the human body is not in direct contact with the electrodes.

  The communication signal received by the receiver 20 is transmitted to the control device 10 after being subjected to predetermined signal processing. The control device 10 detects a communication signal received by the receiver 20 and executes authentication processing and motor control.

  Hereinafter, each part which comprises the electric locking mechanism 1 is demonstrated, mainly referring FIG.

<Transmitter 30>
The transmitter 30 (an example of a transmitter) includes a control unit 31, a communication unit 33, an electrode unit 35, and a battery 39. The control unit 31 generates a data signal and controls the communication unit 33 to transmit a modulated signal and receive a demodulated signal. The communication unit 33 includes a modulation circuit and a demodulation circuit. The modulation circuit generates a modulated signal obtained by modulating the data signal generated by the control unit 31 into a carrier wave, and transmits the modulated signal to the receiver 20 via the electrode unit 35. The demodulation circuit demodulates the modulation signal received from the receiver 20 via the electrode unit 35. The communication unit 33 includes a digital / analog (D / A) conversion unit, an analog / digital (A / D) conversion unit, a filter, and the like, and performs necessary signal processing between the electrode unit 35 and the control unit 31.

  The electrode part 35 has a plate shape, for example, and is formed of a conductive material such as metal. The electrode part 35 should just be arrange | positioned in the site | part from which the distance between the user's 3 body 4 with which the transmitter 30 is mounted | worn becomes below predetermined distance. For example, the electrode unit 35 may be located on the outer surface of the transmitter 30, or may be disposed inside a housing constituting the transmitter 30. Communication signals are transmitted and received via an electric field in the vicinity of the human body that is generated when the human body comes into contact with the electrode portion 35 almost directly or indirectly.

  The battery 39 supplies power to the control unit 31 and the communication unit 33.

  The transmitter 30 transmits authentication information (such as a terminal ID) stored in advance in a memory (not shown) or the like to the receiver 20.

<Receiver 20>
The receiver 20 (an example of a receiver) includes a communication unit 23 and four electrode units 25a, 25b, 25c, and 25d. The communication unit 23 includes a modulation circuit and a demodulation circuit. The modulation circuit generates a modulated signal obtained by modulating the data signal generated by the control device 10 into a carrier wave, and transmits the modulated signal to the transmitter 30 via the electrode units 25a, 25b, 25c, and 25d. The demodulation circuit demodulates the modulated signal received from the transmitter 30. The communication unit 23 includes a digital / analog (D / A) conversion unit, an analog / digital (A / D) conversion unit, a filter, and the like, and necessary signals between the electrode units 25a, 25b, 25c, and 25d and the control device 10. Process.

  Each of the electrode portions 25a, 25b, 25c, and 25d (an example of a signal receiving portion) has a plate shape, for example, and is formed of a conductive material such as metal. The electrode portions 25a, 25b, 25c, and 25d are provided on a portion where the extremities of the user 3 are in contact, a right handle, a left handle, a right pedal, and a left pedal. A communication signal is transmitted and received via an electric field in the vicinity of the human body that is generated when the human body is almost directly or indirectly brought into contact with the electrode portions 25a, 25b, 25c, and 25d.

<Control device 10>
The control device 10 (an example of a control device) is a microcomputer such as a processor or a control circuit that executes calculation and control according to a predetermined program. As shown in FIG. 3, the control device 10 controls the driving of the motor 51 by detecting the reception of the communication unit 13 (an example of the reception unit) that receives the communication signal subjected to signal processing from the receiver 20. The control part 11 (an example of a control part) which performs, the memory 15, and the drive signal output part 17 which outputs the drive signal of the motor drive circuit 53 are provided. The control device 10 detects reception of one or more of the electrode portions 25a, 25b, 25c, and 25d based on reception of communication signals via the electrode portions 25a, 25b, 25c, and 25d and changes in the increase and decrease thereof.

  The receiving unit 13 receives a communication signal subjected to signal processing from the receiver 20.

  The controller 11 generates a motor drive signal by detecting reception of a communication signal.

The memory 15 is configured by a semiconductor memory or the like. For example, authentication information (such as the terminal ID of the transmitter 30) is stored in the memory 15. The memory 15 holds, for example, a table including information in which the amount of communication signals received by the electrode units 25a, 25b, 25c, and 25d is associated with the number of electrode units corresponding thereto.
When communication between the receiver 20 and the transmitter 30 is started, the control unit 11 collates the ID information transmitted from the transmitter 30 with the authentication information held in advance, and permits communication only when the authentication is successful. To do. The control unit 11 also detects a change in the reception amount of the communication signal of the four electrode units 25a, 25b, 25c, and 25d of the receiver 20, and refers to the above-described table so that the four electrode units 25a, 25b, and 25c are detected. , 25d, it is determined how many electrode portions are receiving signals. The control unit 11 generates a drive signal for the motor device 50 according to the determination result, and transmits the drive signal to the motor drive circuit 53 via the drive signal output unit 17.

  As described above, the control device 10 controls the motor device 50 by detecting signal reception by the four electrode portions 25a, 25b, 25c, and 25d.

<Motor device 50>
As shown in FIG. 2, the motor device 50 includes a motor 51 to which power from the battery 90 is supplied, a motor drive circuit 53, a position sensor 55, and a torque sensor 57. The motor 51 is arranged at the center of the wheel (for example, the rear wheel) of the bicycle 2, and is given driving force as assistance for human power in the same direction as the rotational direction of the wheel by the control of the motor driving circuit 53 by the control device 10. . In the illustrated example, the motor is disposed on the rear wheel, but may be disposed on the front wheel.

  The motor 51 is also prevented from rotating by being given a driving force in the direction opposite to the input rotation under the control of the motor drive circuit 53 by the control device 10. As a result, a load is applied to the rotation of the bicycle wheel, and the wheel can be locked. Here, the driving force in the direction opposite to the input rotation is a driving force for rotating the motor 51 by the same angle in the direction opposite to the direction in which the propulsion torque is applied (the forward or backward direction of the bicycle 2).

  The control device 10 may set the lock by increasing the electrical load on the motor 51 and suppressing the rotation of the motor.

  The position sensor 55 is connected to the motor 51 and detects the rotational position of the motor 51. The control device 10 detects the number of rotations of the rear wheel per unit time based on the rotational position of the motor 51 detected by the position sensor 55, and based on the number of rotations of the rear wheel per unit time, Detect speed.

  The torque sensor 57 detects the propulsion torque applied to the motor 51 when the pedal of the bicycle 2 is depressed. The detected torque information is output to the control device 10. The control device 10 executes an electric lock function according to the torque information. Specifically, when the lock is set, the same angle as the direction in which the propulsion torque is applied in the direction opposite to the direction in which the propulsion torque is applied (the direction of the force that depresses the pedal in the forward or backward direction of the bicycle 2). A driving force for rotating the motor partly is applied to the motor 51. On the other hand, when the electric lock is released, the driving force in the direction in which the propulsion torque is applied is applied to the motor 51.

[1-2. Operation]
FIG. 4 is a flowchart mainly showing the operation of the control device 10 according to the present embodiment. The following operations are operations when the user 3 starts using the electrically assisted bicycle 2. At the start of use, the user 3 turns on the power supply (not shown) of the electrically assisted bicycle 2. When the power is turned on, the driving force is applied to the motor 51 of the motor device 50 in the direction opposite to the rotational direction input by the driving signal output from the control device 10, and the wheels are locked.

  S101: The control device 10 detects reception of a communication signal by at least one of the four electrode portions 25a, 25b, 25c, and 25d. The reception of this communication signal is detected when the user 3 touches the handle or pedal directly or indirectly.

  S102: The control device 10 compares the authentication information included in the communication signal from the receiver 20 with the authentication information (such as the terminal ID information) held in the memory 15, and determines the success or failure of the authentication. If the authentication has succeeded, the process proceeds to step S103, and if the authentication has failed, the process ends. By this authentication process, it is confirmed that the user 3 holding the transmitter 30 is a valid user, and the user 3 is permitted to use the electric assist bicycle 2.

  S103: The control device 10 releases the reverse driving force applied to the motor 51 and releases the lock. As a result, the electrically assisted bicycle 2 is ready to run.

  S104: If reception of a communication signal is no longer detected by the control device 10, the process proceeds to step S105. Here, it means that the user 3 gets off the bicycle 2 and leaves.

  S105: The control device 10 determines the speed of the electrically assisted bicycle 2 based on the output from the position sensor 55. Only when the speed is 0 km / h, the process proceeds to step S106 to set the lock. Here, for safety, the lock is set only when the bicycle 2 is not running.

  S106: The lock is set by applying a driving force in the direction opposite to the rotational direction input to the motor 51 of the motor device 50 by the control device 10.

[1-3. Features]
In the motor control apparatus 10 according to the first embodiment, the rotation of the motor 51 is controlled by detecting reception of a communication signal by human body communication. Here, when the reception of one or more communication signals among the four electrode portions 25a, 25b, 25c, and 25d is detected, the lock is released by controlling the rotation of the motor. Further, when the reception of the communication signal from the electrode portions 25a, 25b, 25c, and 25d is not detected, the lock is set. The four electrode portions 25a, 25b, 25c, and 25d are disposed on the left and right handles and the left and right pedals, which are the most contact points when the user gets on and off the bicycle 2.

  For this reason, since the user 3 can release or set the lock only by the operation of getting on and off the bicycle 2, it is possible to realize a highly convenient electric lock function while maintaining the effect of preventing the bicycle 2 from being stolen.

  Further, according to the motor control device 10 according to the first embodiment, the speed of the bicycle 2 is detected, and the lock is not set while the bicycle 2 is traveling. For this reason, even if the user 3 drops the transmitter 30 while the bicycle 2 is traveling, the communication signal cannot be transmitted / received. Can do.

[1-4. Modified example]
In the above embodiment, the control device 10 may detect whether a predetermined propulsion torque is applied to the motor 51 via the torque sensor 57 as the unlocking condition in step S103.

(Embodiment 2)
[2-1. Constitution]
About the structure of Embodiment 2, since it is the same as that of Embodiment 1 shown in FIGS. 1-3, description is abbreviate | omitted.

[2-2. Operation]
FIG. 5 is a flowchart mainly showing the operation of the control device 10 according to the second embodiment. The following operations are operations when the user 3 starts using the electric assist bicycle 2 as in the first embodiment. At the start of use, the user 3 turns on the power supply (not shown) of the electrically assisted bicycle 2. When the power is turned on, the driving force is applied to the motor 51 of the motor device 50 in the direction opposite to the rotational direction input by the driving signal output from the control device 10, and the wheels are locked.

  S201: The control device 10 detects reception of a communication signal by at least one of the four electrode portions 25a, 25b, 25c, and 25d. The reception of this communication signal is detected when the user 3 touches the handle or pedal directly or indirectly.

  S202: The control device 10 compares the authentication information included in the communication signal from the receiver 20 with the authentication information (such as the terminal ID information) held in the memory 15, and determines whether the authentication is successful. If the authentication has succeeded, the process proceeds to step S203, and if the authentication has failed, the process ends. By this authentication process, it is confirmed that the user 3 holding the transmitter 30 is a valid user, and the user 3 is permitted to use the electric assist bicycle 2.

  S203: The control device 10 determines whether communication signals are received from three or more of the electrode units 25a, 25b, 25c, and 25d. The control device 10 refers to, for example, the above-described table stored in the memory 15 or the like, and the amount of communication signals to be received is three or more electrode units among the four electrode units 25a, 25b, 25c, and 25d. It is determined whether it corresponds to the amount of signal from. If it is determined that communication signals are received from three or more systems, the process proceeds to step S204.

  Here, for example, the user 3 is not unlocked only by touching the left and right handles, and is unlocked by touching either of the left and right pedals.

  S204: The controller 10 releases the reverse driving force applied to the motor 51 and releases the lock. As a result, the electrically assisted bicycle 2 is ready to run.

  S205: The control device 10 determines whether or not the communication signal from the electrode portions of the electrode portions 25a, 25b, 25c, and 25d has decreased. The control device 10 refers to, for example, the above-described table stored in the memory 15 or the like, and receives the amount of communication signals received from two or less electrode portions of the electrode portions 25a, 25b, 25c, and 25d. Determine whether it corresponds to the amount of signal. When the communication signal to receive decreases, it progresses to step S206.

  S206: The control device 10 determines the speed of the electrically assisted bicycle 2 based on the output from the position sensor 55. Only when the speed is 0 km / h, the process proceeds to step S207 to set the lock. Here, for safety, the lock is set only when the bicycle 2 is not running.

  S207: The control device 10 sets the lock by applying a driving force to the motor 51 of the motor device 50 in the direction opposite to the input rotation direction.

[2-3. Features]
In the motor control device 10 according to the second embodiment, in addition to the features of the first embodiment or instead of the features of the first embodiment, the four electrode portions 25a, 25b, 25c, 25d The lock is released only when reception of three or more signals among the signals is detected. For this reason, since the unlocking conditions can be strict, an electric lock function with improved security can be realized.

  At the start of use of the bicycle 2, the lock is released by receiving three or more signals arranged on the left and right handles and one pedal. That is, the user 3 is unlocked in a stable posture with both hands on the handle and one foot on the pedal. Therefore, it is possible to suppress a risk of falling or the like due to execution of the assist function in an unstable posture, and it is possible to improve safety.

[2-4. Modified example]
Similarly to the first embodiment, the control device 10 may detect whether a predetermined propulsion torque is applied to the motor 51 via the torque sensor 57 as the unlocking condition in step S204.

  In the above embodiment, in step S205, the lock is set when the reception of communication signals is less than three lines (and the vehicle is not running), but the present invention is not limited to this. When the lock is set again from the unlocked state, the lock may be set only when it is determined that the reception of the communication signal is not detected. The user may get off the bicycle temporarily, and convenience can be maintained by not setting the lock immediately.

(Embodiment 3)
[3-1. Constitution]
The configuration of the third embodiment is the same as that of the first embodiment shown in FIGS.

[3-2. Operation]
FIG. 5 is a flowchart mainly showing operations performed by the control device 10 according to the third embodiment. The following operation is started when the electrically assisted bicycle 2 is running and the wheels are not locked.

  S301: Based on the output from the position sensor 55, the control device 10 determines whether the speed of the electrically assisted bicycle 2 has decreased and stopped. When the speed decreases to 0 km / h, the process proceeds to step S302.

  S302: It is determined whether the communication signal to be received has decreased by the control device 10, that is, whether the signal corresponding to the amount of communication signal from one or more of the four electrode portions 25a, 25b, 25c, 25d is not received. Is done. This determination is performed with reference to the table described above. If reception of communication signals has decreased, the process proceeds to step S303.

  S303: By applying a driving force to the motor 51 of the motor device 50 by the control device 10 in a direction opposite to the rotational direction (a direction in which the propulsion torque is applied, either forward or reverse), A lock is set.

  Here, it is assumed that the electrically assisted bicycle 2 is temporarily stopped due to a signal or the like, and the user 3 wears one foot off the pedal and is on the ground. At this time, by temporarily setting the lock, it is possible to prevent the bicycle from moving backward or forward in an inclined place such as a slope.

  S304: The control device 10 determines whether a predetermined time has elapsed since the stop. Here, the stop time is counted by a timer (not shown). The predetermined time is set from several seconds to several tens of seconds according to the temporary stop time, for example. If the predetermined time has elapsed, the process proceeds to step S305.

  S305: The control device 10 determines whether or not reception of a communication signal is detected. Here, it is confirmed that the user 3 is not away from the bicycle and the reception of the communication signal by the electrode portions 25a, 25b, 25c, and 25d is detected.

  S306: The control device 10 detects whether a predetermined propulsion torque is applied to the motor 51 via the torque sensor 57. Here, the predetermined propulsion torque is, for example, a force applied when the user 3 steps on the pedal. If a predetermined propulsion torque is detected, the process proceeds to step S307.

  S307: The driving force applied in the direction opposite to the detected propulsion torque is released by the control device 10, and the lock is released. As a result, the electrically assisted bicycle 2 is allowed to run again.

[3-3. Features]
In the motor control device 10 according to the third embodiment, the lock is set when a predetermined condition is satisfied, for example, in a temporary stop while the bicycle is running. Thereby, it is possible to prevent the bicycle from moving forward or backward even in a place with an inclination such as a slope.

  In addition, when the reception of the communication signal is detected and the predetermined propulsion torque is detected after the predetermined time has elapsed after the temporary stop, the bicycle 2 is immediately returned to a state in which it can run after the temporary stop in order to release the lock. Can do.

(Other embodiments)
As described above, the embodiment has been described as an example of the technique disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be changed, replaced, added, omitted, and the like as appropriate. Therefore, other embodiments will be exemplified below.

[1]
In the first to third embodiments, the motor 51 is controlled in response to reception of communication signals from the four systems (the left and right handles and the left and right pedals) by the four electrode portions, but the present invention is not limited to this. If there are a plurality of electrode portions (contact portions), the number may be more or less than this.

  Further, the condition for setting the lock may be a case where only communication signals from less than half of the plurality of electrode units can be received.

  Further, the arrangement of the electrode part (contact part) is not limited to the above example, and may be provided, for example, on a saddle.

[2]
A plurality of receivers including electrode units may be provided at each contact part (such as a handle or a pedal) of a bicycle. In this case, information associated with each receiver and the contact portion may be processed by the control device 10. For example, the control apparatus 10 may be able to detect a part that is not in contact with a part that is in contact with the user by recognizing which receiver the communication signal is received by. Thereby, for example, the control device 10 may detect that the user has lifted his / her foot from the pedal, may determine that the user has temporarily stopped, and execute the processing of FIG. 6.

[3]
In the first to third embodiments, after the lock is released, the lock may not be set unless the power is turned off. For example, the lock is not set when the transmitter 30 is dropped during traveling or when a communication signal cannot be received during traveling. Thereby, safe driving | running | working can be performed.

  In such an unforeseen situation, error notification may be performed by blinking light or an alarm sound by an output unit provided in the receiver 20 or the like.

  In addition, when an error occurs regarding reception of a communication signal, a reset function may be provided that starts again from the authentication process between the transmitter 30 and the receiver 20.

[4]
The electric vehicle is not limited to the electric assist bicycle. A motorcycle or an electric wheelchair may be used.

[5]
In the first to third embodiments, the human body communication has been described by taking the electric field method as an example, but a current method may be adopted.

[6]
The execution order of the processes in the above first to third embodiments is not necessarily limited to the description of the above embodiment, and the execution order can be changed without departing from the gist of the invention. It is also possible to omit some processes or to execute a plurality of processes simultaneously.

[7]
The control device 10 and the receiver 20 may be provided integrally as a single device, or may be provided as separate devices.

[8]
The present disclosure includes a control method executed by the control device 10, a computer program executed by the control device 10, and a computer-readable recording medium storing such a program. The computer program is not limited to the one recorded on the recording medium, but may be transmitted via a telecommunication line, a wireless or wired communication line, a network represented by the Internet, or the like.

1: Electric lock mechanism 2: Electric assist bicycle 3: User 4: Human body 10: Control device 11: Control unit 13: Reception unit 15: Memory 17: Drive signal output unit 20: Receiver 23: Communication unit 25a: Electrode unit 25b : Electrode unit 25c: Electrode unit 25d: Electrode unit 30: Transmitter 31: Control unit 33: Communication unit 35: Electrode unit 39: Battery 50: Motor device 51: Motor 53: Motor drive circuit 55: Position sensor 57: Torque sensor 90: Battery

Claims (15)

A motor control device for propelling an electric vehicle or assisting its traveling,
A receiver for receiving communication signals;
A control unit that detects reception of the communication signal and generates and outputs a motor drive signal;
With
The communication signal is a signal that can be transmitted and received by human body communication,
The receiving unit can receive the communication signal from a plurality of signal receiving units,
The control unit controls rotation of the motor in response to detection of reception of the communication signal.
Control device for motor of electric vehicle. The controller is
Detecting whether or not the vehicle is running,
The rotation of the motor is controlled in accordance with detection of reception of the communication signal and presence or absence of traveling of the vehicle.
The motor control device according to claim 1. The control unit suppresses rotation of the motor when the vehicle is in a stopped state and does not detect reception of the communication signal.
The motor control device according to claim 2. The control unit suppresses rotation of the motor when the vehicle is stopped and the signal receiving unit receiving the communication signal among the plurality of signal receiving units is less than half.
The motor control device according to claim 2 or 3. The control unit cancels suppression of rotation of the motor when the vehicle is in a stopped state and detects reception of a communication signal by one or more of the signal receiving units.
The motor control device according to claim 2 or 3. When the control unit detects reception of a communication signal by three or more signal receiving units, the control unit cancels suppression of rotation of the motor.
The motor control device according to claim 5. The control unit suppresses rotation of the motor when the vehicle is decelerated and stopped and the communication signal received by the signal receiving unit decreases.
The motor control device according to claim 2 or 3. The control unit cancels suppression of rotation of the motor when detecting reception of a communication signal by the signal receiving unit after a predetermined time or more has elapsed since the vehicle has stopped.
The motor control device according to claim 7. The control unit suppresses rotation of the motor when the vehicle is in a stopped state and the number of signal receiving units receiving the communication signal is less than four.
The motor control device according to claim 7 or 8. The control unit, when a predetermined propulsion torque is applied to the motor, cancels suppression of rotation of the motor.
The motor control device according to claim 1. The receiving unit receives communication signals from four signal receiving units,
The motor control device according to claim 1. The controller suppresses rotation of the motor by increasing an electrical load on the motor or rotating the motor in a direction opposite to the input rotation.
The motor control device according to claim 1. The communication signal includes authentication information of a user of the vehicle.
The motor control device according to claim 1. A motor control device according to any one of claims 1 to 13,
A transmitter for transmitting the communication signal;
A receiver having the plurality of signal receiving units;
A drive circuit for driving the motor based on a signal from the control device;
The motor;
An electric lock mechanism. The electric lock mechanism according to claim 14 is provided.
Electric vehicle.

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