JP3887148B2 - Keyless entry device - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention provides a keyless function having a keyless function for consciously operating to lock or unlock a vehicle locking device and a smart entry function for locking the locking device when leaving the vehicle and unlocking when approaching the vehicle. It relates to the improvement of the device.
[0002]
[Prior art]
Conventionally, for a keyless entry device having a smart entry function, the smart entry function has been given priority in consideration of convenience. However, since the smart entry function outputs a lock or unlock signal regardless of the driver's intention, it is uneasy because the driver cannot recognize whether or not the lock has actually been locked.
[0003]
Therefore, another means for notifying the driver of locking / unlocking, for example, a means of flashing a light every time locking or unlocking is performed. However, in such a device, the driver approaches or moves away. Each time it flashes, the light blinks, which consumes a lot of power, and also surprises the people around. Another problem is that when you leave the car in the daytime, you will not be aware of the flashing and will be anxious after leaving the car.
[0004]
Therefore, it is possible to switch between the smart entry function and the keyless entry function, but in this case, there is the trouble of switching each time, and the driver forgets to switch to the keyless entry function. I thought it was an entry function, so I couldn't lock it and get away from the car and get stolen.
[0005]
[Problems to be solved by the invention]
This invention pays attention to the above points, and prioritizes the keyless function while maintaining the smart entry function in consideration of convenience, and makes it possible to lock / unlock operation by the driver's intention, thereby eliminating the driver's anxiety. It was made as.
[0006]
[Means for Solving the Problems]
To achieve the above object, the present invention provides a keyless function for consciously operating and locking or unlocking a locking device of a vehicle, and a smart that locks the locking device when leaving the vehicle and unlocks when approaching the vehicle. in the keyless entry system and a entry function, a transmitter for keyless for transmitting a key code signal, and a transmitter for smart entry for transmitting the ID code when receiving the activation signal, the motor vehicle side, wherein An activation signal generator for transmitting an activation signal; a controller for controlling locking and unlocking of the locking device according to the reception state of the key code signal and the ID code; and a door switch for detecting a door opening / closing operation. , as an operation of getting off from the car, the ignition switch is off and Doasui Chi starts sending valid and start signal generation unit is activated signal smart entry function when it detects the opening operation of the door, becomes invalid smart entry function and operates a transmitter for keyless entry start signal generator is characterized in that the so that to stop transmission of the start signal.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The present invention makes it possible to recognize that the driver has performed the lock / unlock operation and to use the smart entry function as necessary.
[0012]
【Example】
Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram of a keyless entry system according to the present invention. Reference numeral 1 denotes a card key having a smart entry function, which receives an activation signal by electromagnetic induction transmitted from an activation signal generator 2 described later. The accommodated power supply unit (battery) 1d is connected to output an ID code. The card key 1 is usually intended that the driver is in possession, sending the outgoing activation signal from the coil antenna 2a of the start signal generating device 2 in the coil antenna 1b receives activation detection unit 1c or al control section 1a If the transmitted electromagnetic induction is a normal activation signal, the power supply unit 1d supplies a current to the rising control unit 1a. And the ID code memorize | stored in the memory | storage part 1e is transmitted from the transmission circuit 1f. The control unit 1a is activated for 5 seconds. During this period, the power supply is connected and the ID code is transmitted. If the next activation signal is received during that period, the ID code is continuously transmitted. It has become so. That is, the transmission of the ID code is stopped unless an activation signal is received for 5 seconds or longer.
[0013]
Reference numeral 2 denotes an activation signal generator, which is attached to, for example, a center pillar of an automobile and transmits an activation signal by electromagnetic dielectric for activating the card key 1 based on a signal from the controller 4. In response to a command from the controller 4, the activation signal generation unit 2 operates the activation generation circuit unit 2b and transmits an activation signal by electromagnetic dielectric from the coil antenna 2a. The transmission distance of the activation signal is about 1 m, and the card key 1 is activated when the card key 1 approaches within 1 m.
[0014]
Reference numeral 3 denotes a key member with a built-in transmitter. A so-called keyless function that transmits a lock key code signal when the lock operation unit 3a is pressed and transmits an unlock key code signal when the unlock operation unit 3b is operated. It is a key member provided with. The key member 3 is formed with a key pile at the tip, and is inserted into a key hole of a key cylinder (not shown) attached to the door of the automobile and rotated to mechanically lock and unlock the door. A key-only 3c for locking is provided, and an opening 3d for attaching a key ring (not shown) is formed at the rear end.
[0015]
The controller 4 controls each member. The controller 4 instructs the activation signal generation unit 2 to transmit an activation signal to the activation generation circuit unit 2, and the ID code from the card key 1 and the key member 3. The key code signal is received by the receiving circuit 4a and processed by the control unit 4b to output a door lock driving signal for locking or unlocking the door to the door lock relay 4c and blinking the hazard lamp. To do. When the door is opened and the door switch 4f is turned on, the controller 4 issues an activation signal transmission command to the activation signal generator 2. On the other hand, when the key code signal is received from the key member 3, the transmission of the activation signal transmitted from the activation signal generator 2 is stopped. Also, when the ignition switch is on, the transmission of the start signal is stopped.
[0016]
That is, when receiving a key code signal from the key member 3 is activated to stop the transmission of activation signals from the signal generating unit 2, not the ID code from the card key 1 is transmitted, the smart entry function is interrupted And become invalid. Further, in the case to keep a long time (period) vehicle is stopped, by allowed to unlock the key member 3, to stop the transmission of the activation signal from the activation signal generator 2, during which unnecessary power It is possible to prevent battery consumption from being consumed. Further, even when the ignition switch is on, the transmission of the start signal is stopped. In this case, since the power source (battery) 1d of the card key 1 is not connected, the card key No unnecessary power consumption.
[0017]
When the controller 4 receives the regular ID code from the card key 1 or receives the unlock signal from the key member 3, the controller 4 sends a drive signal to unlock the door to the door lock relay 4c. In addition, when the smart entry function is effective and the door lock device is in the unlocked state, it becomes impossible to receive the regular ID code from the card key 1, or when the lock signal is received from the key member 3. The door lock relay 4c is driven by sending a drive signal for locking the door to the door lock relay 4c. When the door is locked in response to the signal, a drive signal is sent to the hazard lamp drive unit 4d to cause the hazard lamp to blink twice, and when unlocked, the hazard lamp is blinked once to Is now informed of whether it is locked or unlocked.
A signal from the door latch portion 5 indicating whether the door is locked or unlocked is input from the door lock detector 4e to the controller 4b.
[0018]
The door latch unit 5 drives the door lock motor 5a according to the direction of the current from the door lock relay of the controller 4 to lock or unlock a lock device (not shown) in the door latch 5. A signal indicating whether the locking device is locked or unlocked is input from the door lock link switch 5b to the door lock detection unit 4e of the controller 4.
[0019]
Next, the operation and control procedure of the apparatus of the present invention will be described based on the flowcharts of FIGS.
[0020]
FIG. 2 is a flowchart showing the operation of the card key 1. In step S1, it is determined whether an activation signal has been received. That is, when the driver holds the card key 1 and approaches the vehicle and reaches a distance of 1 meter or less, the activation signal by electromagnetic induction transmitted from the coil antenna 2a of the activation signal generator 2 on the vehicle side is displayed. The coil antenna 1b is received, the activation detection unit 1c detects the activation signal, activates the control unit 1a for 5 seconds in step S2, activates the power supply unit 1d in step S3, and current is supplied from the power supply unit 1d to the control unit 1a. To be supplied. Then, it is determined whether or not the activation signal received in step S4 is a regular activation signal for transmitting an ID code. If the activation signal is a regular activation signal, the ID code stored in the storage unit 1e is transmitted in step S5. It originates from the circuit 1f. If it is not a regular activation signal, the process returns to step S1. If the activation signal is not received for 5 seconds or more, the power supply unit 1d is cut off and the ID code cannot be transmitted.
[0021]
3 and 4 are flowcharts showing the operation of the control unit 4b of the controller 4 according to the first embodiment of the present invention. FIG. 3 mainly shows the operation of the smart entry function, and FIG. 4 shows the operation of the keyless entry function. ing.
[0022]
First, the operation until the driver stops traveling, turns off the engine, gets off the vehicle, leaves the vehicle, automatically locks by the smart entry function, and then returns to the vehicle and unlocks will be described with reference to FIG.
[0023]
Since the ignition switch 4g is on while the automobile is running, steps S10 to S11 are executed, and the activation signal is stopped. When the automobile is stopped and the ignition switch 4g is turned off, it is determined in step S12 whether the door is open, that is, whether the door switch 4f is on. If the door is not opened just by turning off the ignition switch 4g, the door switch 4f is off, and the process proceeds to step S14. At this time, since the activation signal is stopped, the process returns from step S20 to step S10. Then, step S10, step S12, step S14, and step S20 are implemented, and a loop returning to step S10 is repeatedly executed.
[0024]
Next, when the driver opens the door to get off, it is determined in step S12 that the door switch 4f is turned on, and the process proceeds to step S13 to start from the start signal generating circuit 2b of the start signal generating unit 2 via the coil antenna 2a. A start signal is output at intervals of 3 seconds. Along with this, the card key 1 starts its operation and transmits an ID code from the transmission circuit 1f.
[0025]
When the driver gets off and closes the door, the process proceeds from step S12 to step S14 to determine whether a signal is received. In this state, since the ID code of the card key 1 is received, the process proceeds to step S15, and it is determined whether or not it is a keyless code. At this time, since the received signal is the ID code of the card key 1 and not the keyless code, the process proceeds to step S16, and it is determined whether or not the ID codes match. If the driver possesses a regular card key, the ID codes match, and the process proceeds from step S16 to step S17, where it is determined whether the driver is unlocked. Since the door is unlocked just by closing the door, the process returns to step S10. Then, after that, a loop that executes steps S10 to S12 and steps S14 to S17 and returns to step S10 is repeatedly executed.
[0026]
When the driver leaves the car, the activation signal does not reach the card key 1, and when the card key 1 does not receive the activation signal and more than 5 seconds elapse, the ID code is not transmitted from the card key 1. If it does so, it will progress to step S20 from step S14, and it will be determined whether an activation signal is an output state. Since the activation signal is continuously output, the process proceeds to step S21. In step S21, it is determined whether or not the lock device is in the locked state. Since the lock is initially unlocked, the door is locked in step S22, the hazard lamp blinks twice in step S23, and the process returns to step S10. Next, the process proceeds to step S12, step S14, step S20, and step S21. At this time, since the lock state is set, the process returns from step S21 to step S10, and this loop is repeatedly executed thereafter. The activation signal is continuously output at intervals of 3 seconds.
[0027]
Then, when the driver finishes the use and approaches the automobile and is within 1 m, the card key 1 receives the activation signal and activates to transmit the ID code. As a result, the controller 4 determines that a signal has been received in step S12, and proceeds from step S14 to step S15. In step S15, it is determined whether or not the keyless code is the same as described above, but since it is not a keyless code but a smart ID code, the process proceeds to step S16 to determine whether or not the IDs match. If so, the process proceeds to step S17, and if they do not match, the process returns to step S10. Since the ID codes match at this time, the process proceeds to step S17 to determine whether or not the unlock state is set. At this time, since it is in the locked state, the process proceeds to step S18, unlocked in step S18, the hazard lamp blinks once in step S19, and the process returns to step S10. Next, step S10, step S12 to step S17 are executed, but since this time unlocked, the process returns from step S17 to step S10, and thereafter this loop is repeatedly executed. And since the door is automatically unlocked, the driver can open the door as it is and get on.
[0028]
Next, the keyless entry function will be described. When transmitting the keyless code driver operates the lock operation unit 3a or the unlock operation portion 3b of the key member 3 from the vehicle exterior, it determines that it has received the signal at Step S1 4 in FIG. 3, the process proceeds to step S15. In step S15, the keyless code is determined and the process proceeds to step S30 in FIG. If a keyless code is received during communication with the card key 1 in step S15, the keyless code is prioritized and the process proceeds to step S30.
[0029]
If the lock operation part 3a of the regular key member 3 is operated, the lock codes are matched. Therefore, it is determined that the lock codes are matched in step S30, and steps S31 and S32 are executed to output the lock. Then, the hazard lamp blinks twice, the start output is stopped in step S33, and the process returns to step S10. On the other hand, if the lock operation unit 3b of the key member 3 is operated, the process proceeds from step S30 to step S34, and steps S36 and S37 are executed, unlock output is performed, the hazard lamp blinks once, and the start output is stopped in step S33. And return to step S10. When neither the lock code nor the unlock code matches, for example, when operated by another person's key member, the process returns to step S10 without executing anything from step S30 or step S34.
[0030]
After the lock operation or unlock operation is performed with the regular key member 3, each step is executed, and the transmission of the keyless signal is completed, the process proceeds from step S14 to step S20 to determine whether or not the activation signal is in an output state. Since the activation signal is stopped in step S33, the process returns to step S10, and thereafter, the loop from step S10, S12 S14, S20 to step S10 is repeatedly executed.
[0031]
In this state, since the activation signal is not output even if the user holds the card key 1 and approaches the automobile, the ID code is not transmitted from the card key 1, and the smart entry function is disabled. The key member 3 can be locked or unlocked by a keyless entry function or mechanical operation. In this case, even if you unlock with the keyless entry function, the smart entry function will be disabled, so if you are standing near the car or inspecting, approaching or leaving the car etc. In this case, unnecessary lock / unlock operations are not repeated each time.
[0032]
However, priority can be given to locking them securely. In this case, as indicated by the one-dot chain line in FIG. 4, the activation signal may be output from step S36 to step S37, and the process may return to step S10. As a result, when the keyless entry function is used for unlocking, the smart entry function can be used for locking.
[0033]
FIG. 5 is a flowchart showing the operation of the controller 4b of the controller 4 according to the second embodiment of the present invention. In step S12 of the first embodiment, it is determined whether or not the door switch 4f is turned on. In S12a, it is determined whether or not the ignition switch 4g has been switched from on to off, and an activation signal is output when the ignition switch is switched from on to off.
While the vehicle is running, steps S10 and S11 are repeatedly executed, and the start signal remains stopped. However, when the vehicle is stopped and the ignition switch is turned off, the start signal is output in step S13, and step S10. Return to. Then, when the process proceeds to step S12 next time, it is not turned off from on, but it is off to off, so that the process proceeds to step S14 to determine whether or not a signal is received. When the activation signal is output, the ID code is transmitted from the card key 1, so that it is determined that the signal is received, and the process proceeds to step S15. Since it is not a keyless code, the process proceeds from step S15 to step S16. If the ID codes match, the unlocked state is determined in step S17, and if the ID code is locked, the unlocked state is unlocked. Therefore, it is possible to secure the safety by preventing the door from being inadvertently opened while traveling, and it is very convenient because it is automatically unlocked when getting off. Thereafter, the same operation as in the first embodiment is performed. In the first embodiment, an activation signal is output when the door is opened, whereas in the second embodiment, an activation signal is output when the ignition switch is turned off.
[0034]
【The invention's effect】
As is clear from the above description, the keyless entry device of the present invention is configured so that the smart entry function is disabled when the transmitter for keyless entry is operated, so that the driver is troublesome to switch to the keyless entry function. In addition, the keyless entry function can be used to recognize and recognize the lock / unlock, thus eliminating the driver's anxiety.
[0035]
In addition, to become automatically smart entry function to detect the under car of the operation of the automobile, also forgot to lock operation with keyless entry, the car never meet in locked theft.
[0037]
Furthermore, if to detect the lower car operation to an automobile door switch for detecting the opening and closing operation of the door, it is possible to achieve the object without particular increasing the parts.
[0038]
Similarly, even if the operation of the ignition switch is detected to enable the smart entry function, the object can be achieved without increasing the number of parts.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the overall configuration of a keyless entry device according to the present invention.
FIG. 2 is a flowchart showing a procedure of card key operation in the apparatus.
FIG. 3 is a flowchart mainly showing the operation procedure of the smart entry function in a part of the operation procedure of the first embodiment of the controller of the controller in the apparatus.
FIG. 4 is a flowchart mainly showing the operation procedure of the keyless entry function in a part of the operation procedure of the controller of the controller in the apparatus.
FIG. 5 is a flowchart mainly showing the operation procedure of the smart entry function in a part of the operation procedure of the second embodiment of the controller of the controller in the apparatus.
[Explanation of symbols]
1 Card key 1d Power supply (battery)
3 Key member 4 Controller 4b Control unit 4f Door switch 4g Ignition switch

Claims (1)

A keyless function to consciously operate and lock or unlock the car locking device;
In a keyless entry device with a smart entry function that locks the locking device when leaving the vehicle and unlocks when approaching the vehicle,
A keyless transmitter for transmitting a key code signal;
A smart entry transmitter that transmits an ID code when an activation signal is received,
On the automobile side, an activation signal generator for transmitting the activation signal,
A controller that controls locking and unlocking of the locking device according to the reception state of the key code signal and the ID code;
A door switch for detecting the opening and closing operation of the door,
As the operation of getting off from the automobile, when the ignition switch is off and the door switch detects the opening operation of the door, the smart entry function is activated and the start signal generation unit starts transmitting the start signal,
A keyless entry device characterized in that when a keyless transmitter is operated, the smart entry function is disabled and the activation signal generator stops transmitting the activation signal.

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