CN107878394B

CN107878394B - Mutual authentication system for vehicles

Info

Publication number: CN107878394B
Application number: CN201710886046.1A
Authority: CN
Inventors: 木下延昭; 井上勇人; 高石雄介
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2016-09-29
Filing date: 2017-09-26
Publication date: 2020-06-23
Anticipated expiration: 2037-09-26
Also published as: BR102017020629B1; BR102017020629A2; CN107878394A; JP6541632B2; JP2018052297A

Abstract

The invention provides a mutual authentication system of a vehicle capable of coping with the loss of a portable key and the like by a simple structure. When wireless mutual authentication started in response to an operation of a start switch (21c) is established, a CPU (200) reports that the wireless mutual authentication is established through an indicator (19 a). When the start switch (21c) is continuously operated for a third predetermined time (T3) in a state where the wireless mutual authentication is not established, the operation mode of the mutual authentication system is shifted to an emergency mode (F4) in which mutual authentication different from the wireless mutual authentication is possible, and the shift of the operation mode is reported by lighting an indicator (19 a). When mutual wireless authentication is not established, the indicator (19a) is maintained in a turned-off state. In the emergency mode (F4), the number of codes for establishing mutual authentication is identified by the number of operations of the start switch (21 c).

Description

Mutual authentication system for vehicles

Technical Field

The present invention relates to a mutual authentication system for a vehicle, and more particularly to a mutual authentication system for a vehicle for permitting unlocking of the vehicle and starting of a drive source.

Background

Conventionally, a mutual authentication system for a vehicle is known, which permits unlocking of the vehicle and activation of a drive source by performing wireless mutual authentication between a portable key having a wireless communication function and a communication mechanism provided on the vehicle body side.

Patent document 1 discloses the following structure: the wireless mutual authentication between the communication means and the portable key is started by a trigger of a push-down operation of a dial switch as an ignition switch provided in the motorcycle.

Prior art documents

Patent document

Patent document 1: japanese patent No. 4603928

Problems to be solved by the invention

Here, even in the mutual authentication system using the portable key, it is necessary to prevent an emergency from being caused by loss of the portable key or battery consumption of the portable key and disabling wireless communication. Specifically, there is a case where a lock cylinder operable by a spare physical key and a coupler connected to a dedicated inspection machine are provided, so that unlocking and activation of a drive source can be performed as a temporary process without using a portable key.

However, if the key cylinder and the coupler are provided, there are problems such as an increase in the number of components and cost, a complication in the structure, and an increase in restrictions on the layout of the vehicle body. In patent document 1, such a problem is not studied.

Disclosure of Invention

An object of the present invention is to solve the above-described problems of the conventional art and to provide a mutual authentication system for a vehicle capable of coping with the loss of a portable key or the like with a simple configuration.

Means for solving the problems

In order to achieve the above object, the present invention relates to a mutual authentication system for a vehicle, including: a vehicle body side control unit 200 that performs wireless mutual authentication with the portable key 150; a body-side switch 21c that instructs the start of the wireless mutual authentication; and a vehicle-body-side display unit 19a that displays the wireless mutual authentication state, wherein the vehicle-body-side control unit 200 is characterized in that when the wireless mutual authentication started in response to the operation of the vehicle-body-side switch 21c is established, the vehicle-body-side display unit 19a reports that the wireless mutual authentication is established, and when the vehicle-body-side switch 21c is continuously operated for a predetermined time period T3 in a state where the wireless mutual authentication is not established, the vehicle-body-side control unit 200 shifts the operation mode of the mutual authentication system to an emergency mode F4 in which mutual authentication different from the wireless mutual authentication is possible, and reports that the vehicle-body-side display unit 19a has shifted to the emergency mode F4.

In the mutual authentication system for a vehicle, the vehicle-side control unit 200 may be configured to notify that the wireless mutual authentication is established by lighting the vehicle-side display means 19a when the wireless mutual authentication is established, and the vehicle-side control unit 200 may maintain the turning-off state of the vehicle-side display means 19a when the wireless mutual authentication is not established.

In the mutual authentication system for vehicles, the emergency mode F4 is an input waiting mode for a code number for establishing the mutual authentication, and the vehicle-body side control unit 200 recognizes the code number based on the number of times of operation of the vehicle-body side switch 21 c.

In the vehicle mutual authentication system, the code number is formed of a plurality of digits, and the vehicle-body control unit 200 switches the display of the vehicle-body display unit 19a each time the digit waiting for input of the code number shifts to the next digit.

In addition, in a fifth aspect of the mutual authentication system for a vehicle, the mutual authentication system for a vehicle includes a vehicle body-side buzzer 24, and the vehicle body-side control unit 200 reports the transition to the emergency mode F4 and the completion of the mutual authentication based on the input of the code number by the vehicle body-side buzzer 24, respectively.

In addition, a sixth characteristic of the mutual authentication system for a vehicle is that the vehicle-body-side switch 21c also serves as a start switch for starting the drive source P of the vehicle.

Effects of the invention

According to the first feature, when the wireless mutual authentication started in correspondence with the operation of the vehicle-body side switch 21c is established, the vehicle-body-side control unit 200 reports the establishment of the wireless mutual authentication through the vehicle-body-side display means 19a, and on the other hand, when the vehicle-body side switch 21c is continuously operated for a predetermined time period T3 in a state where the wireless mutual authentication is not established, the vehicle-body control unit 200 shifts the operation mode of the mutual authentication system to an emergency mode F4 in which mutual authentication different from the wireless mutual authentication is possible, and the fact that the transition to the emergency mode F4 has been made is reported by the vehicle-body side display mechanism 19a, therefore, the instruction to start wireless mutual authentication and the instruction to shift to the emergency mode when wireless mutual authentication is not established can be executed by a single switch. Thus, it is not necessary to provide a dedicated switch, mechanism, or the like for switching to the emergency mode, and it is possible to avoid an increase in the number of components and complication of the mechanism, thereby reducing the cost. Since the establishment state of the wireless mutual authentication and the transition state to the emergency mode can be confirmed by the vehicle-body-side display means, a mutual authentication system that is easy to operate and convenient for the user can be obtained.

According to the second feature, when the wireless mutual authentication is established, the vehicle-body-side control unit 200 notifies that the wireless mutual authentication is established by lighting the vehicle-body-side display means 19a, and when the wireless mutual authentication is not established, the vehicle-body-side control unit 200 maintains the off state of the vehicle-body-side display means 19a, so that the vehicle-body-side display means is not lit even if the vehicle-body-side switch is operated, whereby it is possible to recognize that the wireless mutual authentication is not established, and it is possible to prompt the passenger to operate the vehicle-body-side switch to shift to the emergency mode.

According to the third feature, since the emergency mode F4 is an input waiting mode for a code number for establishing the mutual authentication and the vehicle-body side control unit 200 recognizes the code number based on the number of times the vehicle-body side switch 21c is operated, the code number input means can be used as the vehicle-body side switch for starting the wireless mutual authentication, and a special input device or the like is not required, and an increase in cost can be suppressed. Further, since the code number can be input according to the number of times of operation of the vehicle body side switch, complication of the operation can be avoided.

According to the fourth aspect, since the code number is formed of a plurality of digits and the display of the vehicle body side display unit 19a is switched by the vehicle body side control unit 200 each time the digit waiting for input of the code number shifts to the next digit, the vehicle body side display unit that reports establishment of wireless mutual authentication also serves as a reporting means for the input timing of the code number, thereby suppressing an increase in cost.

According to the fifth feature, since the mutual authentication system of the vehicle includes the vehicle body-side buzzer 24, and the vehicle body-side control unit 200 reports the transition to the emergency mode F4 and the completion of the mutual authentication based on the input of the code number by the vehicle body-side buzzer 24, respectively, the state of the vehicle body side can be recognized more easily by reporting by the vehicle body-side buzzer in addition to the vehicle body-side display unit.

According to the sixth aspect, since the vehicle-body-side switch 21c also serves as a start switch for starting the drive source P of the vehicle, the start switch also serves as a start switch for starting wireless mutual authentication and an input of a code number, and thus a special input device or the like is not required, and an increase in cost can be suppressed. In addition, the operation of starting the drive source can be smoothly performed after the authentication based on the input of the code number is established.

Drawings

Fig. 1 is a left side view of a motorcycle to which a mutual authentication system of a vehicle according to the present embodiment is applied.

Fig. 2 is an enlarged view of the periphery of a steering handle of the motorcycle as viewed from the driver.

FIG. 3 is an enlarged view of the periphery of the handlebar locking module.

Fig. 4 is a block diagram showing the overall configuration of the mutual authentication system for vehicles according to the present embodiment.

Fig. 5 is a state transition diagram of each operation mode of the mutual authentication system.

Fig. 6 is a timing chart showing a flow from establishment of the wireless mutual authentication to turning on of the main switch.

Fig. 7 is a timing chart showing a flow from the time when the wireless mutual authentication is not established to the time when the mutual authentication based on the input of the code number is established.

Fig. 8 is a timing chart showing a flow of returning from the emergency mode F4 to the standby mode F2.

Fig. 9 is a timing chart showing a flow of returning from the authentication completion mode F5 to the standby mode F2.

Fig. 10 is a timing chart showing a flow of returning to the standby mode F2 when mutual authentication by input of a code number is not established.

Description of the symbols:

1 … motorcycle (straddle type vehicle), 19 … meter device, 19a … indicator (vehicle body side display means), 21c … start switch (S/SW, vehicle body side switch), 24 … buzzer (vehicle body side buzzer), 50 … communication device, 62 … dial switch (M/SW, main switch), 200 … CPU (vehicle body side control unit), F2 … standby mode, F4 … emergency mode, F5 … authentication completion mode, F7 … engine startable mode.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a left side view of a motorcycle 1 to which a mutual authentication system of a vehicle according to the present embodiment is applied. The motorcycle 1 is a scooter type straddle-type vehicle in which a low step 12 on which a driver's foot is to be ridden is provided between a steering handle 2 and a seat 14. A head pipe 34 is fixed to a front end of the frame 18, and the head pipe 34 pivotally supports a steering column 33 coupled to a lower portion of the steering handle 2. A pair of left and right front forks 11 that pivotally support the front wheel WF to be rotatable are fixed to a lower portion of the steering column 33.

The front and rear of the steering handle 2 are covered with a front handle cover 3 and a rear handle cover 5 that support the headlamps 4 and the instrument device 19. Further, the front side of the front pipe 34 and the steering column 33 is covered by the front center cover 20 and the pair of left and right front side covers 8, and the rear side is covered by the upper rear cover 7 and the lower rear cover 40. A pair of right and left front combination lamps 9 as lighting devices of the vehicle are disposed between the front center cowl 20 and the front side cowl 8, and the front combination lamps 9 house front position lights and turn signal flashers in an integral housing. A pair of left and right under covers 32 are connected to both ends of the low step 12 in the vehicle width direction. The lower cover 32 is coupled to the lower end of the front cover 8 at the vehicle body front side.

A unit swing type power unit P having an engine and a transmission as a driving source integrally supported to be swingable is pivotally supported at a position rearward of the low step plate 12 with a lower portion of the seat 14 covered with a seat cover 13. A rear end portion of a power unit P that rotatably supports a rear wheel WR as a driving wheel is suspended from a vehicle body via a rear cushion 17, and an air cleaner case 15 is attached to an upper portion of the power unit P. A rear combination lamp 16 having a rear turn signal flasher integrally formed on the left and right sides of the tail lamp is attached to the rear end portion of the seat cover 13, and a rear fender 23 is disposed below the rear combination lamp. A front fender 10 covering the upper side of the front wheel WF is attached to the front fork 11, and a buzzer 24 is housed in front of the head pipe 34.

Fig. 2 is an enlarged view of the periphery of the steering handle 2 of the motorcycle 1 as viewed from the driver. The rear handle cover 5 covering the steering handle 2 from the rear supports a meter device 19 including a speedometer and a fuel gauge. An engine stop switch 21a, a hazard lamp switch 21b, and an engine start switch (S/SW)21c are disposed on the right side of the handle cover 5 on the rear side. Further, an optical axis changeover switch 22a, a horn switch 22b, and a turn signal strobe switch 22c are disposed on the left side of the rear handle cover 5.

In the motorcycle 1 of the present embodiment, a mutual authentication system for a vehicle is applied, which permits unlocking and starting of an engine by performing wireless mutual authentication between a portable key (see fig. 4) having a wireless communication function and a communication device 50 provided on the vehicle body side. The communication device 50 as the vehicle-body side communication means of the present embodiment includes both a transmission unit and a reception unit necessary for wireless mutual authentication with the portable key. The meter device 19 is provided with an indicator 19a as a vehicle body side display means for displaying the mutual authentication system.

The upper rear cover 7 is coupled to an upper end portion of a lower rear cover 40 (dotted portion) as a first resin cover, and the lower rear cover 40 is coupled to a front end portion of the low step plate 12. The fuel inlet cover 31 is disposed at the center in the vehicle width direction of the lower rear cover 40. A folding hook 30 for hooking a shopping bag or the like is attached to the center of the upper rear cover 7 above the fuel filler port cover 31.

A cover 29 of a storage space is provided on the left side of the upper rear cover 7 in the vehicle width direction, and the cover 29 can be opened by operating the knob 28. Further, a handle lock module 60 as a locking device is provided on the right side of the upper rear cover 7 in the vehicle width direction, and the handle lock module 60 includes a dial switch that functions as a main switch and an operation member of a handle lock mechanism. The communication device 50 is disposed in front of the handlebar lock module 60 on the vehicle body side and on the right side in the vehicle width direction.

Fig. 3 is an enlarged view around the handlebar locking module 60. The operation plate 61 of the handlebar lock module 60 is provided with: a dial switch 62 as a main switch (M/SW) that performs locking and unlocking of the main power supply and the handle bar lock by a turning operation; a so-called seesaw-type swing switch 63 that opens the fuel lid cover 31 and opens the seat 14; and a partition plate 64 that prevents an erroneous operation of the swing switch 63 when the dial switch 62 is operated. In the present embodiment, the dial switch 62 and the swing switch 63 can be operated by establishing wireless mutual authentication between the portable key and the communication device 50.

The dial switch 62 is a three-position type in which an ON (ON) position of the main switch and a handle lock position sandwich an OFF (OFF) position of the main switch. Normally, when the passenger leaves the motorcycle 1, the dial switch 62 is set to an off position for cutting off the main power supply or a handlebar lock position for holding the steering handlebar 2 in the steered state while cutting off the main power supply. When the passenger performs a locking operation using the portable key or the passenger with the portable key leaves the communicable range for a predetermined time, the solenoid drives the lock mechanism to disable the operation of the dial switch 62 and the swing switch 63. Therefore, when the passenger operates the motorcycle 1 again, it is necessary to establish wireless mutual authentication with the portable key to unlock the dial switch 62 and the swing switch 63.

This wireless mutual authentication is performed by transmitting a response signal from the portable key side in response to a request signal transmitted from the vehicle body side, but if a trigger switch for transmitting the request signal is provided on the portable key side, it is not easy to cope with a situation such as losing the portable key, and therefore it is preferable to provide it on the vehicle body side in advance. However, since the number of components and the cost increase when the trigger switch is newly provided, the configuration is simplified and the cost is reduced by using the trigger switch 21c for starting the drive source of the motorcycle 1 as the trigger switch for transmitting the request signal in the present embodiment.

Further, in the present embodiment, since mutual authentication as a temporary countermeasure can be performed even when the wireless mutual authentication cannot be performed due to loss of the portable key or battery consumption, the present embodiment is characterized in that the start switch 21c is also used as an operation member for switching the operation mode of the mutual authentication system to the emergency response mode (emergency mode).

Fig. 4 is a block diagram showing the overall configuration of the mutual authentication system for vehicles according to the present embodiment. In the present embodiment, a CPU200 as a vehicle body side control unit is provided inside a communication device 50 that performs wireless communication with the portable key 150. The starter switch function switching mechanism 220 in the CPU200 switches the function of the starter switch 21c to four modes, i.e., an engine starter switch, a trigger switch for transmitting a request signal from the vehicle body side, a switch for switching the mutual authentication system to the emergency response mode, and an input switch of a code number for mutual authentication, according to the state of the mutual authentication system. Until the mutual authentication is completed, the CPU200 cannot start the engine by the start switch 21 c.

The portable key 150 is provided with a response switch 151 and a remote power switch 152. Further, when the response switch 151 is pressed, the buzzer sounds and the turn signal strobe flashes, so that the user can easily find his/her own car even in a parking lot at night, which is very convenient. Further, by pressing the remote power switch 152, the power of the portable key 150 can be switched on and off, and the battery of the portable key 150 can be saved.

As a different embodiment of the portable key 150, a configuration in which an unlocking switch 151 and a locking switch 152 are provided is conceivable. In this case, the portable key 150 may be configured to be able to start wireless mutual authentication by operating the unlock switch 151 of the portable key 150.

The CPU200 is connected with a power supply circuit 201, an input circuit 202, a start circuit 203, a password signal circuit 204, a start switch input circuit 205, a wireless transmission/reception unit 206, a turn signal strobe drive circuit 207, a buzzer drive circuit 208, a solenoid drive circuit 209, and an indicator drive circuit 210.

Power is supplied from a 12V vehicle-mounted battery to the power supply circuit 201 via the fuse 100. The input circuit 202 is connected to a registration mode switch 101 for switching the operation mode of the mutual authentication system to a registration mode F3 shown in fig. 5, and a main switch 62 including a dial switch. The main switch 62 and the front and rear brake switches 102 and 103 are connected in series to the starting circuit 203, so that the brake operation can be added to the starting condition of the engine.

The start circuit 203 and the encryption signal circuit 204 are connected to the FI-ECU104 that performs fuel injection and ignition control of the engine, and in principle, the engine is not started even if other conditions are satisfied unless the authorized portable key 150 registered in the CPU200 is used.

A turn signal flash switch 22c (see fig. 2) is connected in parallel to a turn signal flash drive circuit 207 that supplies electric power to the front and rear turn signal flash light sources 106.

Note that, as the function of the turn signal strobe drive circuit 207, in addition to supplying power to the front and rear turn signal strobe light sources 106 in accordance with the operation of the turn signal strobe switch 22c when the main switch 62 is on, an operation mode of supplying power to the turn signal strobe light source 106 even when the main switch 62 is off may be added as a notification means for, for example, a case where the lock state is established by the operation of the portable key 150.

The buzzer driving circuit 208 supplies power to the buzzer 24 as a notification means for, for example, the establishment of wireless mutual authentication.

The solenoid drive circuit 209 drives the solenoid 107 incorporated in the handle lock module 60 in accordance with various conditions to permit or prohibit operations of the main switch (dial switch) 62 and the swing switch 63. The indicator driving circuit 210 causes the indicator 19a provided in the meter device 19 to emit light, thereby reporting the operation state of the mutual authentication system to the passenger.

Fig. 5 is a state transition diagram in each operation mode of the mutual authentication system. In the description of the transition conditions in the figure, the dial switch 62 is represented as M/SW (main switch), and the start switch 21c is represented as S/SW.

When the S/SW, which is a push switch, is turned on, if M/SW is turned on and at least one of the front and rear brake switches 102 and 103 is turned on (condition 1), the vehicle shifts to the running mode F1. The running mode F1 corresponds to a case where the engine is started after the wireless mutual authentication is established, or a state where the S/SW is operated during running.

When the M/SW is turned off and the wireless mutual authentication is established (condition 2) when the S/SW is turned on, the operation transitions to the authentication completion mode F5. In the authentication completion mode F5, the dial switch (M/SW)62 and the swing switch 63 are unlocked.

When the M/SW is turned on in the authentication completion mode F5 (condition 5), the mode shifts to the engine startable mode F7. In the engine start enabling mode F7, when the S/SW is turned on, the engine is started, and when the M/SW is turned off and the lock condition is satisfied (condition 15), the mode transitions to the standby mode F2. The locking condition is a case where the passenger performs a locking operation using the portable key, or the portable key 150 is separated from the communication range and a predetermined time has elapsed.

When the wireless mutual authentication is not established due to the loss of the portable key 150 or the like when the S/SW is turned on (condition 3), the operation transitions to the standby mode F2. In the standby mode F2, the dial switch (M/SW)62 and the swing switch 63 are maintained in the locked state. On the other hand, in the running mode F1, when M/SW is off and the locking condition is satisfied (condition 6), the mode transitions to the standby mode F2.

When the S/SW is turned on for 4 seconds or more in the standby mode F2 (condition 10), the mode transitions to the emergency mode F4. The emergency mode F4 is a mode for accepting a code number for performing mutual authentication in an emergency without using wireless communication.

If the termination condition is satisfied (condition 11) in the emergency mode F4, the mode returns to the standby mode F2, and if mutual authentication is satisfied (condition 4), the mode transitions to the authentication completion mode F5. The end conditions of the emergency mode F4 include (1) authentication established by input of the code number, (2) absence of the on operation of the starter switch within 5 seconds after transition to the emergency mode F4, (3) turning on of the starter switch for 2 seconds or more before input of the code number, (4) completion of blinking of the indicator or turning on of the starter switch for 2 seconds or more after input of the code number has failed, and the like.

The registration mode F3 and the setting mode F6 correspond to special applications. The registration mode F3 is a mode for newly registering a portable key corresponding to a vehicle, and is mainly applied to factories, sales stores, and the like. In the standby mode F2, when the registration mode switch 101 is turned on, the mode transitions to the registration mode F3. In the registration mode F3, a new registration of the portable key is performed by a predetermined operation, and the standby mode F2 is returned to when the M/SW is off and the end condition of the registration mode switch off is satisfied (condition 13).

On the other hand, the setting mode F6 is a mode in which a portable key having another code number is additionally set in a state in which a registered portable key exists. When the S/SW is turned on for 4 seconds or more in the authentication completion mode F5 (condition 7), the mode transitions to the setting mode F6. In the setting mode F6, additional registration of the portable key is performed by a predetermined operation, the mode is shifted to the engine startable mode F7 by the M/SW on (condition 8), and the mode is returned to the standby mode F2 by the completion of the end condition (condition 9). The end conditions of the setting mode F6 include (1) no on operation of the starter switch within 5 seconds after the transition to the setting mode F6, (2) turning on the starter switch for 2 seconds or more when the code number is input, and the like.

The mutual authentication system according to the present embodiment is characterized in that wireless mutual authentication is started by operating the start switch 21c, transition to the emergency mode F4 is possible by operating the start switch 21c when wireless mutual authentication is not established, and input of the code number in the emergency mode F4 is possible by the start switch 21 c. Hereinafter, various operation modes of the mutual authentication system will be described with reference to the timing charts of fig. 6 to 10.

Fig. 6 is a timing chart showing a flow from establishment of the wireless mutual authentication to turning on of the main switch 62. Fig. 6 to 10 show, from above, the open/close states of the start switch (start SW)21c, the main switch (main SW)62, the LF signal, i.e., the request signal from the vehicle body side, the UHF signal, i.e., the response signal from the portable key 150 side, the indicator 19a, the solenoid 107, and the buzzer 24.

At time t of fig. 6, when it is 0, the main switch is turned off and mutual authentication between portable key 150 and CPU200 is not performed. When the start switch is operated at time t1, a request signal is transmitted from the wireless transmission/reception unit 206 on the vehicle body side. A response signal is transmitted in response to the request signal at time t2, and wireless mutual authentication is established at time t 3. At time t3, the indicator is turned on, the solenoid is turned on, the lock is released, and the buzzer 24 gives a notification. The report by the buzzer 24 is executed by repeating on for a predetermined time Ta (for example, 0.35 second) and off for a predetermined time Tb (for example, 0.35 second).

At time t5, the passenger who recognizes the establishment of the wireless mutual authentication switches the main switch to on, and becomes a state in which the engine can be started. The indicator is turned on at time T6 when a first predetermined time T1 (for example, 2 seconds) has elapsed since the main switch was turned on. Further, the request signal is transmitted again at time T7 after the main switch is turned on, and this is set so that the wireless mutual authentication is repeated every second predetermined time T2 (for example, 30 seconds) while the main switch is turned on. This enables countermeasures such as reporting by an indicator when the portable key 150 falls during traveling and mutual wireless authentication is not established, for example.

Fig. 7 is a timing chart showing a flow from the time when the wireless mutual authentication is not established to the time when the mutual authentication based on the input of the code number is established. At time t10, the passenger who has identified the failure of wireless mutual authentication starts to press the start switch for a long time in order to switch the mutual authentication system to the emergency mode F4, based on the fact that the indicator and the buzzer are not operated and the main switch cannot be operated even after the start switch is operated.

At time T11 when the third predetermined time T3 (4 seconds in the present embodiment) has elapsed from time T10, blinking of the indicator is started to notify that the standby mode F2 is switched to the emergency mode F4 (see fig. 5).

At time t12, it is recognized that the mode has been switched to the emergency mode F4, and the start switch is operated so that a situation with a desire to input a code number is input to the CPU 200. In response to this, the CPU200 turns on the buzzer for an extremely short fifth predetermined time T5 to report to the passenger that the input of the code number is ready.

In the present embodiment, the code number is also input by activating the switch. The starter switch function switching mechanism 220 (see fig. 4) is switched as follows: in response to the on operation of the starter switch at time t12, the on signal from the starter switch is recognized as the input signal of the code number.

The code number in the present embodiment is a multi-bit (for example, 9-bit) number composed of 0, 1, and 2. Basically, the code number is input by turning on the starter switch 1 times within a predetermined time when 1 is input, 2 times when 2 is input, and not operating the starter switch within a predetermined time when 0 is input.

First, the on operation of the starter switch at time T12 starts the counting of the down-count timer for a predetermined time T6 (e.g., 5 seconds). Here, if the start switch is not operated until the predetermined time T6 elapses, the 1 st code number is recognized as "0", but in the example of fig. 7, the first start switch operation for code number input is performed at the time T13 when the time T4 elapses from the time T12.

The CPU200 sets a predetermined time T6 every time there is a start switch operation for inputting a code number. Specifically, if the start switch is operated before the predetermined time T6 elapses, the predetermined time T6 is set as an extended time at that time, and if the start switch is not operated during the extended time, the code number is recognized as "1", and if the start switch is operated during the extended time, the code number is recognized as "2".

In the example of fig. 7, the predetermined time T6 as the extended time is set in accordance with the operation of the start switch performed at time T13, but since the start switch is not operated until time T14 when the extended time elapses, the code number is recognized as "1", and the indicator is turned off so that the 2 nd bit can be input in response to the recognition of the 1 st bit.

The turn-off time of the indicator starting at time T14 is set to a short time (e.g., 0.3 seconds), and at time T14-1, a predetermined time T6 for the 2 nd bit input operation is set. In the example of the figure, since there is no operation of the start switch from time T14-1 to time T15 when the predetermined time T6 has elapsed, the extension time is not set, the 2 nd digit code number is recognized as "0", and the indicator is turned off at time T15 so as to prompt the input of the 3 rd digit. According to the setting of the predetermined time T6 described above, the predetermined time is newly set every time the start switch is pressed in order to input the code number, so that the input time can be made redundant, and the input operation of the code number can be facilitated.

After time t15, the code numbers up to the 8 th bit are sequentially input as in the 1 st and 2 nd bits, and the 9 th bit is input at time t 16. At time t17, the indicator is turned off for a short time (e.g., 0.3 seconds) to report that the input of the code number is completed.

When the mutual authentication is established by the input code number, the CPU200 turns on the solenoid 107 at time t18 in addition to turning on the indicator, and operates the buzzer 24 twice in a short time to notify the passenger. At time t19, the passenger who recognizes that the mutual authentication based on the input of the code number is established turns on the main switch, and the indicator is turned off at time t20 after a predetermined time.

Since the operation mode of the mutual authentication system shifts to the engine startable mode F7 (see fig. 5) by turning on the main switch at time t19, the engine is started by turning on the start switch. However, this time chart shows a flow of a case where after the mutual authentication is established at time t17, the engine is not started even if the main switch is turned on at time t19, and the main switch is turned off at time t 21.

When the main switch is turned off at time t21, the indicator is turned on in response to this. When the passenger who recognizes the lighting of the indicator starts to press the start switch for a long time at time T22, at time T23 when the eighth predetermined time T8 (for example, 2 seconds) elapses, the engine startable mode F7 shifts to the standby mode F2, and a report is issued by the blinker light source and the buzzer.

Fig. 8 is a timing chart showing a flow of returning from the emergency mode F4 to the standby mode F2. As shown in the explanation of fig. 5, when the termination condition is satisfied in the emergency mode F4, the operation returns to the standby mode F2, but in this time chart, there is shown a case where the termination condition is satisfied within 5 seconds from the transition to the emergency mode F4 among the termination conditions, without the operation of the start switch.

At time t20, it is recognized that the passenger who is not in the wireless mutual authentication starts to press the start switch for a long time to switch the mutual authentication system to the emergency mode F4. At time T21 when the ninth predetermined time T9 (4 seconds in the present embodiment) has elapsed from time T20, blinking of the indicator is started to report that the standby mode F2 has switched to the emergency mode F4.

In this time chart, since the start switch is not operated until time T22 when the tenth predetermined time T10 (for example, 5 seconds) elapses from time T21, the state does not transition to the input acceptance state of the code number, and the mode transitions from the emergency mode F4 to the standby mode F2.

Fig. 9 is a timing chart showing a flow of returning from the authentication completion mode F5 to the standby mode F2. The flow until the main switch is turned off at time t21 is the same as the timing chart of fig. 7. The difference between the two is that: in the time chart of fig. 7, the main switch is turned off at time t21, and then the start switch is operated according to the intention of the passenger to shift from the engine startable mode F7 to the standby mode F2, whereas the main switch is turned off at time t21 and then automatically shifts to the standby mode F2 even when the main switch is left alone. Specifically, after the main switch 62 is turned off at time T21, the CPU200 transitions from the engine startable mode F7 to the standby mode F2 at time T24 when an eleventh predetermined time T11 (for example, 6 minutes) has elapsed, and reports are made by the blinker light source and the buzzer.

Fig. 10 is a timing chart showing a flow of returning to the standby mode F2 when mutual authentication by input of a code number is not established. The flow until the code number of the 9 th bit is input at time t16, and the indicator is turned off for a short time (e.g., 0.3 seconds) at time t17 to report that the input of the code number is completed is the same as the time chart of fig. 7.

In this time chart, mutual authentication is not established due to an input error of a code number or the like at time t25, and a report by blinking of the indicator is started from time t 25. At time T27 at which the CPU200 repeatedly turns off and on for a twelfth predetermined time T12 (for example, 1 second) which is the same as the time from time T25 to time T26 three times, the CPU makes a buzzer-based report and shifts the mutual authentication system from the emergency mode F4 to the standby mode F2.

As described above, according to the mutual authentication system of a vehicle of the present embodiment, when the wireless mutual authentication started in accordance with the operation of the start switch 21c is established, the indicator 19a reports that the wireless mutual authentication is established, and when the start switch 21c is continuously operated for the third predetermined time T3 in a state where the wireless mutual authentication is not established, the operation mode of the mutual authentication system is shifted to the emergency mode F4 in which mutual authentication different from the wireless mutual authentication is possible, and the indicator 19a reports that the operation mode is shifted to the emergency mode F4, so that the instruction to start the wireless mutual authentication and the instruction to shift to the emergency mode F4 in a state where the wireless mutual authentication is not established can be executed by a single switch. This eliminates the need to provide a dedicated switch, mechanism, or the like for shifting to the emergency mode F4, and thus can avoid an increase in the number of components and complication of the mechanism, thereby reducing the cost. Further, since the establishment state of the wireless mutual authentication and the transition state to the emergency mode F4 can be confirmed by the indicator 19a, a mutual authentication system that is easy to operate and convenient for the user can be obtained.

The form of the operation mode of the mutual authentication system, the transition condition between the operation modes, the structure and form of the handle lock module, the form of the CPU, and the like are not limited to the above-described embodiments, and the various time settings shown in the time chart, the drive form of the notification means such as the turn signal flash, the buzzer, and the like are not limited to the above-described embodiments, and various modifications are possible. For example, the indicator as the vehicle body side display means may be a display on a liquid crystal screen, in addition to the LED light source. The drive source of the vehicle may be a motor. In this case, the start switch may be pressed after the main switch is turned on, so that the vehicle can run. In the mutual authentication based on the code number input, if the code number includes a plurality of digits "0", the number of digits can be easily increased to improve the theft prevention property, and the operation of the code input can be easily performed.

In the above-described embodiment, it is assumed that the handle lock mechanism is a mechanical type in which the handle lock pin is projected by rotating the dial switch, but the handle lock mechanism may be driven by a solenoid. In the case where the handle lock pin is solenoid-driven, the handle lock may be automatically released in response to completion of mutual authentication based on the code number input, for example, and the engine may be started without rotating the dial switch as the engine startable state. Further, the engine can be started by releasing the handle lock in accordance with completion of the mutual authentication based on the code number input, and by operating the brake and the start switch simultaneously as the engine startable state. The vehicle mutual authentication system according to the present invention is not limited to a motorcycle, and can be applied to various vehicles such as a straddle-type three-or four-wheeled vehicle. In addition, the present system can complete mutual recognition by a single operation switch even in an emergency, and therefore has high operability.

Claims

1. A mutual authentication system of a vehicle, having: a vehicle body side control unit (200) that performs wireless mutual authentication with the portable key (150); a vehicle body side switch (21c) that instructs the start of the wireless mutual authentication; and a vehicle body side display means (19a) for displaying the state of the wireless mutual authentication,

the mutual authentication system of the vehicle is characterized in that,

when the wireless mutual authentication started in accordance with the operation of the vehicle-body-side switch (21c) is established, the vehicle-body-side control unit (200) reports that the wireless mutual authentication is established via the vehicle-body-side display means (19a),

on the other hand, when the vehicle-body-side switch (21c) is continuously operated for a predetermined time (T3) in a state where the wireless mutual authentication is not established, the vehicle-body-side control unit (200) shifts the operation mode of the mutual authentication system to an emergency mode (F4) in which mutual authentication different from the wireless mutual authentication is possible, and reports the shift to the emergency mode (F4) by the vehicle-body-side display means (19a),

the emergency mode (F4) is an input waiting mode for a code number for establishing the mutual authentication,

the vehicle-body-side control unit (200) recognizes the code number based on the number of operations of the vehicle-body-side switch (21c),

the code number is composed of a number of multiple bits,

the vehicle-body-side control unit (200) switches the display of the vehicle-body-side display unit (19a) each time the position where the input of the code number is waiting shifts to the next position,

the vehicle-body-side control unit (200) sets a predetermined time (T6) each time the vehicle-body-side switch (21c) is operated to input the code number,

when the vehicle-body-side switch (21c) is operated before the predetermined time (T6) elapses, the value of the code number is increased and the predetermined time (T6) is newly set, and when the predetermined time (T6) elapses, the value of the code number is held and the bit on which the input is waiting is shifted to the next bit and the predetermined time (T6) is newly set.

2. The mutual authentication system of a vehicle according to claim 1,

when the wireless mutual authentication is established, the vehicle-body-side control unit (200) notifies that the wireless mutual authentication is established by lighting the vehicle-body-side display means (19a),

on the other hand, when the wireless mutual authentication is not established, the vehicle-body-side control unit (200) maintains the turning-off state of the vehicle-body-side display means (19 a).

3. The mutual authentication system of vehicles according to claim 1 or 2,

the mutual authentication system of the vehicle is provided with a vehicle body side buzzer (24),

the vehicle-body-side control unit (200) reports, by means of the vehicle-body-side buzzer (24), the transition to the emergency mode (F4) and the completion of mutual authentication based on the input of the code number, respectively.

4. The mutual authentication system of vehicles according to claim 1 or 2,

the vehicle body side switch (21c) also serves as a start switch for starting a drive source (P) of the vehicle.