JP2004116261A - Electronic key system for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To avoid the so-called closing or the like of a baggage by surely conducting communication with an electronic key even when the electronic key is placed in a helmet storage space. <P>SOLUTION: In an electronic key system for a vehicle with a control device loaded on an actual vehicle 100 and the electronic key transmitting a response signal on the basis of the reception of a request signal transmitted through a transmission antenna 72 from the control device, the actual vehicle 100 has a freely openable and closeable seat 140 on which a user sits, a seat handle 144 and a locking device locking the seat 140 so as not to be opened until a locking release indication is transmitted. The control device has a means in which the locking release indication is outputted to the locking device when the control device collates the response signal and a requirement from the regular user is determined, and the transmission antenna 72 is installed to the left side face of the seat 140 or the seat handle 144. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, wireless communication is performed between a transmitter / receiver (electronic key) carried by a user and a control device mounted on an actual vehicle, the ID is collated, and a request is issued from an authorized user. In addition, the present invention relates to a vehicular electronic key system for starting an engine and the like, for example, relates to a vehicular electronic key system suitable for use in a motorcycle.
[0002]
[Prior art]
As an electronic key system for a vehicle, for example, there are Patent Literature 1 and Patent Literature 2. In the electronic key systems for vehicles disclosed in Patent Documents 1 and 2, activation means (switches) are installed on door handles and trunk lids of actual vehicles, and when a user operates (activates) these activation means, the electronic key is activated. Communication with the electronic key, the ID transmitted from the electronic key is compared with the ID registered in the control device, and the door lock or the like is released when the ID matching result is obtained. is there.
[0003]
Further, in the above-mentioned Patent Documents 1 and 2, the ignition knob is also provided with a start-up means (switch), and the user operates the ignition knob after getting on the four-wheeled vehicle to communicate with the electronic key again. Is performed, and ID collation for permitting the start of the engine is performed. The engine is started at the stage when the ID matching result is obtained.
[0004]
That is, in a conventional vehicle electronic key system for a four-wheeled vehicle, the electronic key has a function of unlocking a door and permitting start of an engine.
[0005]
Further, as a prior art, an electronic key system has been proposed in which a transmission antenna is provided at each door of a four-wheeled vehicle, and only the door approaching the portable device can be unlocked independently of the other doors of the vehicle. (For example, see Patent Document 3).
[0006]
As described above, in the above-described electronic key system, in communication between the control device mounted on the actual vehicle and the electronic key, the transmittable range from the control device is narrower than the transmittable range from the electronic key. Therefore, in the above-described related art, a plurality of transmission antennas for outputting signals from the control device are provided according to various uses.
[0007]
[Patent Document 1]
JP 2001-349110 A (paragraphs [0026] to [0028])
[Patent Document 2]
JP 2001-349117 A (paragraphs [0022] to [0024])
[Patent Document 3]
JP-A-10-317754 (paragraph [0006])
[0008]
[Problems to be solved by the invention]
By the way, in the case of a motorcycle such as a scooter that can store a helmet in a space provided below the seat, for example, for the purpose of preventing theft, a lock mechanism that locks the opening and closing of the seat is provided, In communication with the electronic key, a method of releasing the locked state of the seat when it is recognized that the user is an authorized user can be considered.
[0009]
In such a case, it is conceivable to use the electronic key in a bag or the like and store it in a helmet storage space. In such a usage, when communication between the control device and the electronic key is interrupted, the locked state of the seat cannot be released, and so-called baggage may be trapped.
[0010]
The present invention has been made in view of such a problem, and even when an electronic key is placed in a helmet storage space, communication with the electronic key can be reliably performed, and so-called baggage lock or the like is avoided. It is an object of the present invention to provide a vehicular electronic key system that can be used.
[0011]
[Means for Solving the Problems]
An electronic key system for a vehicle according to the present invention includes a control device mounted on an actual vehicle, and an electronic key that transmits a response signal based on reception of a request signal transmitted from the control device via a transmission antenna. An electronic key system for use, wherein the actual vehicle includes a seat that can be opened and closed by the user, and a lock device that locks the seat so that the seat is not opened until an unlock instruction is supplied. Means for outputting a lock release instruction to the lock device when the response signal is determined to be a request from a legitimate user, wherein the transmitting antenna is Alternatively, it is provided near the sheet.
[0012]
Thus, the request signal transmitted from the control device is output from the sheet or the vicinity of the sheet. Therefore, it is possible to cover the sheet and its peripheral portion as the transmittable range. As a result, even if the electronic key is placed in the helmet storage space, communication with the electronic key can be reliably performed, and so-called luggage can be avoided.
[0013]
Then, the transmitting antenna may be installed on a left side surface of the seat. Normally, the user operates the seat opening and closing operation while standing on the left side of the actual vehicle.By installing a transmitting antenna on the left side of the seat, communication with the electronic key during opening and closing operation of the seat is ensured. Can be.
[0014]
In the case where at least a seat handle used for manually opening and closing the seat is provided around the rear portion of the seat, the transmitting antenna may be provided on the seat handle.
[0015]
Normally, since the seat handle can be retrofitted to the actual vehicle body, it is not necessary to largely change the shape and wiring route of the vehicle body to provide the transmission antenna. That is, the transmission antenna can be installed with a slight design change, which is advantageous in terms of cost.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which a vehicle electronic key system according to the present invention is applied to, for example, a system for a motorcycle will be described with reference to FIGS.
[0017]
As shown in FIG. 1, an electronic key system 10 according to the present embodiment includes an electronic key 12 carried by a user (user) and a control device 14 mounted on a real vehicle 100 (see FIG. 6). The electronic key 12 has a key shape in which an IC chip is incorporated therein, and a digital key 12 in which a card shape has an IC chip incorporated therein. When applied as a system, the shape of a card is used. In the present embodiment, description will be made assuming an electronic key 12 having a card shape.
[0018]
The electronic key 12 has the shape of a card as described above, and includes a battery 20, a power supply circuit 22, a CPU 24, a reception circuit 26, and a transmission circuit 28 as shown in FIG.
[0019]
The power supply circuit 22 is a circuit that supplies power from the battery 20 to the reception circuit 26, the transmission circuit 28, and the CPU 24. The receiving circuit 26 has a receiving antenna (not shown), receives the request signal Sr and the like transmitted from the control device 14 through the receiving antenna, extracts the request signal Sr from the carrier wave, and demodulates the signal. The demodulated signal is supplied to the CPU 24. The carrier frequency of the request signal Sr is 100 kHz to 300 kHz.
[0020]
The CPU 24 executes at least two computer programs (a request signal matching unit 30 and a response signal generating unit 32). The request signal matching means 30 checks whether the signal supplied from the receiving circuit 26 is the request signal Sr, and if the signal is the request signal Sr, transfers control to the response signal generating means 32. The response signal generating means 32 reads out ID data recorded in a ROM (not shown) based on the request from the request signal collating means 30, adds an attribute indicating a response to the ID data, and generates the transmission data Dt as transmission data Dt. 28. The transmission circuit 28 has a transmission antenna (not shown), modulates the carrier based on the transmission data Dt supplied from the CPU 24, and transmits the modulated signal as a response signal Sa through the transmission antenna. The carrier frequency of this response signal Sa is 200 MHz to 500 MHz.
[0021]
On the other hand, the control device 14 mounted on the actual vehicle 100 is constituted by, for example, a system LSI, and for example, as shown in FIG. 3, a power supply circuit 40, a CPU 42, a reception circuit 44, a transmission circuit 46, an input circuit 48, a first circuit It has a drive circuit 52 (for driving the actuator), a second drive circuit 54 (for driving the main relay), and a third drive circuit 56 (for driving the LED). Around the control device 14, at least a battery 60, a main switch 62, an actuator (drive source of the lock device) 64, a main relay 66, a warning light 68 (LED), an activation switch 70, and a transmission antenna 72 are provided. .
[0022]
The main switch 62 has two fixed contacts 62a and 62b and one movable contact 62c. One fixed contact 62a is connected to the battery 60, and the other fixed contact 62b is connected to the input circuit 48 and the main relay 66. Have been.
[0023]
The input circuit 48 is connected to a start switch 70 in addition to the other fixed contact 62b of the main switch 62. The ON / OFF state of the start switch 70 and the ON / OFF state of the main switch 62 are supplied to the CPU 42 through the input circuit 48.
[0024]
The start switch 70 can be set to, for example, any one of operation switches used to start the engine of the real vehicle 100, to secure during traveling, and to stop the engine of the real vehicle 100. Specifically, as shown in FIG. 4, when the actual vehicle 100 is of a motorcycle type, a lighting dimmer switch 104, a clutch switch 106, a blinker switch 108, a horn switch 110, a front brake switch, Any of the switch 112, the hazard switch 114, and the starter switch 116 can be set as the start switch 70.
[0025]
When the actual vehicle 100 is a scooter type as shown in FIG. 5, the start switch 70 is provided with a lighting dimmer switch 122, a rear brake switch 124, a blinker switch 126, a horn switch 128, It can be set to any of the front brake switch 130, the hazard switch 132, and the starter switch 134.
[0026]
The setting of the activation switch 70 includes, for example, a method in which, when the user purchases the actual vehicle 100, the user determines in advance by, for example, a contract with a dealer, and performs wiring at a factory based on the determined items. For example, wiring for connecting the switch determined as the start switch 70 to the input circuit 148 of the control device 14 is performed at a factory.
[0027]
The start switch 70 may be any of the various switches installed around the handles 102 and 120 as described above. For example, in a scooter, as shown in FIG. May be provided with a start switch 70.
[0028]
As shown in FIG. 7, below the seat 140, there is a space 142 (helmet storage space) in which a helmet (not shown) can be stored. Usually, a helmet is stored in this space 142 when not riding. Further, some users may store luggage such as bags in this space 142.
[0029]
Around the rear portion of the seat 140, there is provided a handle 144 (hereinafter, referred to as a seat handle 144 for distinguishing from the handle 120 steered by the driver) used at least for manually opening and closing the seat 140. I have.
[0030]
Accordingly, the installation position of the activation switch 70 includes the inside of the seat handle 144 and the seat 140. When the activation switch 70 is provided on the seat handle 144, it is preferable that the activation switch 70 is provided on a portion of the seat handle 144 that is gripped by the user when the user opens the seat 140. When the start switch 70 is provided inside the seat 140, when the user opens the seat 140, it is preferable to embed the start switch 70 in a portion corresponding to a portion on which the user places a hand.
[0031]
Accordingly, in order for the user to take out the helmet, the start switch 70 is turned on at the same time as the operation of opening the seat 140, and the operability related to the start of the electronic key system 10 can be improved.
[0032]
Then, the power supply circuit 40 in the control device 14 supplies the power from the battery 60 to the CPU 42, the reception circuit 44, the transmission circuit 46, and the like.
[0033]
The receiving circuit 44 has a receiving antenna (not shown), receives the response signal Sa and the like transmitted from the electronic key 12 through the receiving antenna, extracts the signal from a carrier wave, and demodulates the signal. The demodulated signal is supplied to the CPU 42.
[0034]
The CPU 42 executes at least four programs (a request signal generation unit 80, a response signal comparison unit 82, a monitoring unit 84, and a peripheral instruction unit 86).
[0035]
The request signal generating means 80 reads request data Dr (data that is a source of the request signal Sr) from a ROM (not shown) based on the ON operation of the start switch 70 and the main switch 62 and outputs the request data Dr to the transmission circuit 46. The request signal generating means 80 reads the request data Dr from the ROM at regular intervals after the engine is started and outputs the read request data Dr to the transmission circuit 46. This fixed time is set to any one of 10 to 100 seconds in consideration of the consumption of the battery 20 by the electronic key 12.
[0036]
The transmission circuit 46 modulates a carrier based on the request data Dr supplied from the CPU 42 and transmits the modulated carrier as a request signal Sr through the transmission antenna 72.
[0037]
As shown in FIGS. 8 and 9, the transmittable range of the request signal Sr is a spherical range having a radius of 1 to 1.5 m around the transmitting antenna 72 mounted on the actual vehicle 100 (circle A in FIGS. 8 and 9). ), Which is narrower than the transmittable range of the response signal Sa (a range of several m radius around the electronic key 12).
[0038]
Therefore, as shown in FIGS. 8 and 9, when assuming a scooter in which a helmet storage space 142 (see FIG. 7) is installed under the seat 140 as the actual vehicle 100, the user can communicate with the electronic key 12. In order to reliably perform the operation when the seat 140 is opened and when the electronic key 12 is stored in the helmet storage space 142, for example, the seat 140 of the actual vehicle 100 or the vicinity of the seat 140 Preferably, a transmitting antenna 72 is provided. 8, 9, and 6 show examples in which the transmission antenna 72 is installed on a portion of the left side of the rear portion of the seat 140 that is normally not touched by the user.
[0039]
In addition, as shown in FIG. 7, when a seat handle 144 is provided around the rear portion of the seat 140, the transmitting antenna 72 is installed on the seat handle 144. Also in this case, it is usually preferable to install the transmitting antenna 72 in a portion that the user does not touch.
[0040]
On the other hand, the response signal matching means 82 checks whether the signal supplied from the receiving circuit 44 is the response signal Sa, and furthermore, if the signal is the response signal Sa, the ID data included in the response signal Sa is: It is checked whether it matches the ID data registered in the memory (not shown).
[0041]
The monitoring unit 84 monitors whether or not the response signal Sa has arrived (whether or not an ID match has been detected by the response signal matching unit 82) based on the output of the request signal Sr. The request signal generation unit 80 waits for the input of the response signal Sa from the time when the request data Dr is output, and when the response signal Sa does not arrive within a predetermined time (the ID match is detected by the response signal matching unit 82. If not, the count value is updated by +1. Then, when the count value becomes equal to or more than the predetermined value, the warning signal Se is output to the third drive circuit 56.
[0042]
In particular, if the response signal Sa has not arrived within a predetermined time since the request data Dr was output based on the ON operation of the start switch 70 and the main switch 62, the warning signal Se is sent to the third drive at that stage. Output to the circuit 56.
[0043]
In addition, when the response signal Sa arrives within a predetermined time after the request data Dr is output based on the ON operation of the activation switch 70, the monitoring unit 84 activates the peripheral instruction unit 86. The peripheral instruction means 86 outputs an unlock signal to the first drive circuit 52 based on a request (unlock) from the monitoring means 84, and further outputs an ON signal to the second drive circuit 54.
[0044]
The first drive circuit 52 drives the actuator 64 based on the input of the unlock signal from the CPU 42 to release the locked state of the handle 120 and the seat 140.
[0045]
The second drive circuit 54 is turned on based on the input of the ON signal from the CPU 42, and then, when the main switch 62 is turned on to turn on the main relay 66, the engine is started, The vehicle is ready to run.
[0046]
The third drive circuit 56 drives the warning light 68 based on the input of the warning signal Se from the CPU 42, and the warning light 68 emits light. As the warning light 68, for example, an LED can be used.
[0047]
When the main switch 62 is turned off, the main relay 66 is turned off, and the engine is stopped at the same time. Then, when the locking operation, for example, operating the handle 120 or the seat 140 to the locked state, the collation operation of the response signal Sa in the control device 14 is stopped, and the second drive circuit 54 is turned off.
[0048]
Next, a processing operation of the electronic key system 10 according to the present embodiment will be described with reference to timing charts of FIGS. 10A to 10E. Note that the request signal Sr is a signal having a pulse train based on the request data Dr, and the response signal Sa is a signal having a pulse train based on data including the ID data. , Each signal is described as a one-pulse signal.
[0049]
First, in a normal state, at time t1 in FIG. 10A, when the user operates the start switch 70 while holding the electronic key 12, a request signal Sr is transmitted from the control device 14 as shown in FIG. 10C. At time t2, communication with the electronic key 12 is started.
[0050]
When the user has the electronic key 12, the request signal Sr is received through the receiving circuit 26 (see FIG. 2) of the electronic key 12. The electronic key 12 transmits a response signal Sa based on the reception of the request signal Sr, as shown in FIG. 10D (see time point t3). The response signal Sa is supplied to the CPU 42 through the receiving circuit 44 (see FIG. 3) in the control device 14, and the ID data included in the response signal Sa is collated. If it is determined that the ID data matches, the locked state of the handle 120 and the seat 140 is released (unlocked) through the control device 14 and the first drive circuit 52 as shown in FIG. 10E (time point). t4).
[0051]
By this unlocking, steering with the handle 120 becomes possible, and the seat 140 is lifted slightly upward, so that the user can easily recognize that the locked state of the handle 120 and the seat 140 has been released. At this time, the second drive circuit 54 is turned on.
[0052]
Subsequently, at time t5 in FIG. 10B, when the user operates the main switch 62 while holding the electronic key 12, a request signal Sr is transmitted from the control device 14 as shown in FIG. 10C (see time t6). ), Communication with the electronic key 12 is performed.
[0053]
When the user has the electronic key 12, as described above, the electronic key 12 transmits a response signal Sa based on the reception of the request signal Sr as shown in FIG. 10D (see time point t7). The response signal Sa is supplied to the CPU 42 through the reception circuit 44 of the control device 14, and the ID data included in the response signal Sa is collated. If it is determined that the ID data is the same, the next step, that is, The process shifts to the step of outputting the request signal Sr at regular time intervals τ.
[0054]
From this stage, the user is traveling, for example, with the real vehicle 100, and during this traveling, the control device 14 outputs the request signal Sr at regular time intervals τ. That is, communication with the electronic key 12 is performed at regular time intervals τ, and the electronic key 12 outputs a response signal Sa approximately at regular time intervals τ.
[0055]
The above-described processing operation shows the processing from the time when the user holds the electronic key 12 and gets on the real vehicle 100 to the time when the user drives the real vehicle 100. Next, when the real vehicle 100 is activated, the electronic key 12 is not present. The processing operation when this is detected will be briefly described.
[0056]
First, when the user does not have the electronic key 12 and turns on the start switch 70, a request signal Sr is transmitted from the control device 14. The control device 14 responds to the output request signal Sr. The reception of the signal Sa is not performed. As a result, the warning signal Se is output from the monitoring means 84 to the third drive circuit 56, and the warning lamp 68 is turned on. Of course, in this case, processing such as unlocking of the handle 120 and the seat 140 is not performed.
[0057]
The user notices that the electronic key 12 is not possessed by the lighting of the warning light 68, and can prevent the engine from starting without the electronic key 12 in advance.
[0058]
Next, a brief description will be given of a processing operation when it is detected that the electronic key 12 is not present when the engine of the actual vehicle 100 is started.
[0059]
First, when the user operates the start switch 70 while holding the electronic key 12, a request signal Sr is transmitted from the control device 14, and communication with the electronic key 12 is started. By this communication, the ID data included in the response signal is collated, and if it is determined that the ID data matches, the locked state of the handle 120 and the seat 140 is released.
[0060]
Subsequently, when the user turns on the main switch 62 without noticing, for example, that the electronic key 12 has been dropped, a request signal Sr is transmitted from the control device 14. The control device 14 outputs the request signal Sr. The response signal Sa to the signal Sr is not received. As a result, the warning signal Se is output from the monitoring means 84 to the third drive circuit 56, and the warning lamp 68 is turned on.
[0061]
The user notices that the electronic key 12 has been dropped by turning on the warning light 68, and the loss of the electronic key 12 is avoided in advance.
[0062]
Next, a brief description will be given of a processing operation when it is detected that the electronic key 12 is not present while the actual vehicle 100 is traveling.
[0063]
First, the processing from the ON operation of the start switch 70 to the ON operation of the main switch 62 is the same as the processing from time t1 to time t7 in FIGS. 10A to 10E.
[0064]
When the engine is started based on the ON operation of the main switch 62, the process proceeds to the step of outputting the request signal Sr at regular time intervals τ as described above. From this stage, the user is traveling, for example, with the real vehicle 100, and during this traveling, the control device 14 outputs the request signal Sr at regular time intervals τ.
[0065]
For example, when the electronic key 12 falls during traveling in the actual vehicle 100, the control device 14 does not receive the response signal Sa. The monitoring means 84 updates the count value by +1 when the response signal Sa is not received within a predetermined time from the output of the request data Dr. Then, in the process of sequentially outputting the request signal Sr, when the count value becomes equal to or more than the predetermined value, a warning signal Se is output from the monitoring means 84 to the third drive circuit 56, whereby the warning light 68 is output. Lights up.
[0066]
The user notices that the electronic key 12 has been dropped by turning on the warning light 68, and the loss of the electronic key 12 is avoided in advance.
[0067]
As described above, in the electronic key system 10 according to the present embodiment, the transmitting antenna 72 (transmitting the request signal Sr) of the control device 14 is installed on the seat 140 or the seat handle 144 of the actual vehicle 100. The request signal Sr transmitted from the device 14 is output from the seat 140 or the seat handle 144. Therefore, it is possible to cover the sheet 140 and its peripheral portion as the transmittable range. As a result, even if the electronic key 12 is placed in the helmet storage space 142, communication with the electronic key 12 can be reliably performed, and so-called baggage confinement and the like can be avoided.
[0068]
Normally, the user performs the opening / closing operation of the seat 140 while standing on the left side of the actual vehicle 100. Therefore, by installing the transmission antenna 72 on the left side surface of the seat 140, communication with the electronic key 12 during the opening / closing operation of the seat 140 is performed. Can be performed reliably.
[0069]
In addition, since the seat handle 144 can be usually attached later to the vehicle body of the actual vehicle 100, if the transmission antenna 72 and the start switch 70 are provided on the seat handle 144, the transmission antenna 72 and the start switch 70 Therefore, it is not necessary to largely change the shape of the vehicle body and the wiring route. That is, the transmission antenna 72 and the activation switch 70 can be installed with a slight design change, which is advantageous in cost.
[0070]
Next, two modified examples of the electronic key system 10 according to the present embodiment will be described with reference to FIGS.
[0071]
First, the electronic key system 10a according to the first modified example has substantially the same configuration as the electronic key system 10 according to the above-described first embodiment, but as shown in FIG. Is different in that a transmission unit 160 is provided.
[0072]
As shown in FIG. 12, the transmission unit 160 separates the transmission circuit 46 from the control device 14 constituted by a system LSI to form one electronic component 162, and the electronic component 162 is electrically connected to the transmission antenna 72. It is a unitized.
[0073]
The electronic key system 10b according to the second modification has substantially the same configuration as the electronic key system 10 according to the above-described first embodiment, but as shown in FIG. The difference is that the unit 170 is provided.
[0074]
As shown in FIG. 14, the transmission / reception unit 170 separates the reception circuit 44 and the transmission circuit 46 from the control device 14 constituted by a system LSI, and integrates the reception circuit 44 and the transmission circuit 46. One electronic component 172 is formed by electrically connecting the transmission circuit 46 and the transmission antenna 72 of the electronic component 172 to form a unit.
[0075]
11 and 13 show an example in which the transmission unit 160 and the transmission / reception unit 170 are installed on the left side surface of the seat 140, but the transmission unit 160 and the transmission / reception unit 170 are installed on the seat handle 144 as in FIG. You may make it.
[0076]
Which of the electronic key system 10 according to the present embodiment and the electronic key systems 10a and 10b according to the first and second modifications described above is adopted depends on the size of the actual vehicle 100, the wiring path, the transmission antenna 72, and the like. What is necessary is just to select suitably considering installation space etc.
[0077]
The vehicular electronic key system according to the present invention is not limited to the above-described embodiment, but may adopt various configurations without departing from the gist of the present invention.
[0078]
【The invention's effect】
As described above, according to the vehicular electronic key system according to the present invention, even when the electronic key is placed in the helmet storage space, communication with the electronic key can be reliably performed. Can be avoided.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an electronic key system according to an embodiment.
FIG. 2 is a block diagram illustrating a configuration of an electronic key.
FIG. 3 is a block diagram illustrating a configuration of a control device.
FIG. 4 is an explanatory diagram showing an example of operation switches (switches that can be mentioned as start-up switch candidates) around a steering wheel in a case where the actual vehicle is a motorcycle type.
FIG. 5 is an explanatory diagram showing an example of operation switches (switches that are candidates for start-up switches) around a steering wheel in a scooter type of a real vehicle.
FIG. 6 is an explanatory view showing an example in which a starter switch and a transmitting antenna are installed on a seat or a seat handle in a case where a real vehicle is a scooter type.
FIG. 7 is an enlarged view showing a state where a sheet is opened.
FIG. 8 is a side view showing an example of an installation position of a transmission antenna on an actual vehicle.
FIG. 9 is a plan view showing an example of an installation position of a transmission antenna on an actual vehicle.
FIGS. 10A to 10E are timing charts showing processing operations of the electronic key system according to the present embodiment.
FIG. 11 is an explanatory diagram showing an example in which a transmission unit of an electronic key system according to a first modification is installed in an actual vehicle.
FIG. 12 is a block diagram showing a configuration of a control device and a transmission unit in an electronic key system according to a first modification.
FIG. 13 is an explanatory diagram showing an example in which a transmission / reception unit of an electronic key system according to a second modification is installed in an actual vehicle.
FIG. 14 is a block diagram showing a configuration of a control device and a transmission / reception unit in an electronic key system according to a second modification.
[Explanation of symbols]
10, 10a, 10b: electronic key system 12: electronic key 14, control device 72, transmitting antenna 140, seat 144, seat handle 160, transmitting unit 170, transmitting and receiving unit

Claims (3)

In a vehicle electronic key system having a control device mounted on an actual vehicle and an electronic key that transmits a response signal based on reception of a request signal transmitted from the control device via a transmission antenna,
The real vehicle includes an openable / closable seat on which the user sits, and a lock device for locking the seat so as not to be opened until an unlock instruction is supplied,
The control device has a unit that outputs a lock release instruction to the lock device when the response signal is compared and the request is determined to be a request from a legitimate user,
The electronic key system for a vehicle, wherein the transmitting antenna is installed in the seat or in the vicinity of the seat. The vehicle electronic key system according to claim 1,
The electronic key system for a vehicle, wherein the transmitting antenna is installed on a left side surface of the seat. The vehicle electronic key system according to claim 1,
In the case of having a seat handle used at the time of manually opening and closing the seat at least around the rear portion of the seat,
The electronic key system for a vehicle, wherein the transmitting antenna is installed on the seat handle.

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