JP2002168018A - Remote control device for vehicle-mounted equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that another person can open a door for invasion during the presence of a possessor of a portable machine in a position enabling communication with vehicle-mounted equipment because the operating state of the vehicle-mounted equipment is changed when verification is conducted even without operations by the possessor of the portable machine in a conventional remote control device for the vehicle-mounted equipment. SOLUTION: A vehicle-mounted machine 10 is constituted so as to control the operating state of the vehicle-mounted equipment after transmitting a code request signal to the portable machine 50 and verifying a response code returned from the portable machine 50. The machine 10, which receives a test ordering signal transmitted from the portable machine 50 to the machine 10, transmits a test signal for checking on the reception state of the portable machine 50 to the portable machine 50, which is constituted so as to prohibit the operation state being controlled by the machine 10 during the reception of the test signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle device remote control device for performing code collation by communication with a portable device and controlling the on-vehicle device based on the collation result.

[0002]

2. Description of the Related Art Conventionally, in addition to a remote control function of operating / operating an operation unit of a portable device to lock / unlock a door of a vehicle, a transmission request signal from a vehicle is provided without operating the operation unit. There is a smart entry system that locks / unlocks a door by returning a return code signal to a user and checking the code. For example, Japanese Patent Application Laid-Open No. 5-106376 discloses that when a call signal is received by a first receiving means, a portable wireless device having a first transmitting means for transmitting a response signal and a predetermined signal from a second transmitting means. When the response signal transmitted after receiving the call signal transmitted at the time interval is received by the second receiving means, a signal for unlocking the door of the vehicle is output, and the response signal must be received. For example, there is described a system including a vehicle wireless device including control means for outputting a signal for locking a door of a vehicle after a predetermined time has elapsed.

Conventionally, a return code signal is returned in response to a transmission request signal from the vehicle side, and the codes are collated to unlock the steering lock mechanism and release the engine start prohibition device. There is a smart start system that enables an engine start operation without using a key. For example, Japanese Unexamined Patent Publication No. 63-1765 discloses that a calling signal is transmitted to a portable wireless device, a password code signal from the portable wireless device is received and collated with an internal code. A system is described that comprises means for permitting operation, switching operation of an ignition switch, and switching operation of an accessory switch, respectively.

[0004]

The name of a system combining the above two systems is hereinafter referred to as a smart entry / start system. In the smart entry / start system, both convenience and security are issues. (1) In the smart entry / start system, the operation state (for example, locking / unlocking of the door) of the in-vehicle device changes if the collation is confirmed without the operation of the portable device holder. No change in operating state must be prohibited. When the owner of the portable device is at a position where communication with the vehicle-mounted device is possible, another person can open the door and invade. (2) Since the remote control can normally be operated at a distance of several meters, there is a risk that another person may enter the door between the time when the door is unlocked and the time when the user gets on the vehicle. (3) When the owner of the portable device needs to go out of the vehicle with the engine running (for example, when it is necessary to operate the air conditioner or check the condition of the engine), carelessly during that time There is a concern that the vehicle may move and may be stolen. (4) If the portable device is left in the vehicle, a person who is not a legitimate portable device holder can operate the vehicle, and it is necessary to prevent the portable device from being left behind.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has improved security without impairing convenience and controlling on-vehicle equipment according to code collation by communication with a portable device. It is an object of the present invention to obtain an in-vehicle device remote control device capable of performing the operation.

[0006]

According to the present invention, there is provided an on-vehicle device remote control device for transmitting a remote control signal for remotely controlling an on-vehicle device, and transmitting a code request signal to the portable device. Controls the operation of the in-vehicle device according to the response code returned from the device, and transmits a confirmation signal to the portable device to confirm whether the portable device can receive the signal based on a specific remote control signal transmitted from the portable device. The portable device includes an in-vehicle device, and is configured to prohibit the control of the operation of the in-vehicle device by the in-vehicle device when the confirmation signal is received.

A portable unit having an operation switch for forming a remote operation signal for remotely controlling the vehicle-mounted device and transmitting a remote operation signal formed by operating the operation switch, and a code request signal to the portable unit And send
The mobile device controls the operation of the in-vehicle device according to the response code returned from the mobile device, and sends a confirmation signal to the mobile device based on a specific remote control signal transmitted from the mobile device to confirm whether the mobile device can receive the signal. The portable device is provided with a transmitting on-vehicle device, and when the confirmation signal is received, the operation switch is operated to prohibit the control of the operation of the on-vehicle device by the on-vehicle device.

The specific remote control signal transmitted by the portable device is a door lock operation signal for instructing a door lock. Further, the portable device notifies the reception of the confirmation signal transmitted from the vehicle-mounted device.

Also, a portable device for transmitting a remote control signal for remotely controlling an on-vehicle device for locking and unlocking, and transmitting a code request signal to the portable device when receiving a remote control signal for unlocking from the portable device. And controls the locking and unlocking of the in-vehicle device according to the response code returned from the portable device.

Further, position determining means for determining the location of the portable device, engine operation determining means for determining whether the engine is operating, and shift lock release permitting means for permitting release of the transmission gear shift lock of the vehicle. When the communication start switch is operated, the in-vehicle device disables the transmission gear shift lock release by the shift lock release permission means when the portable device is outside the vehicle and the engine is operating. Is what you do. Also, an on-vehicle device having position determining means for determining the location of the portable device, engine operation determining means for determining whether the engine is operating, and shift lock release permitting means for permitting transmission gear shift lock release of the vehicle. The on-vehicle device disables transmission gear shift lock release by the shift lock release permission means when the portable device is outside the vehicle and the engine is operating.

The vehicle-mounted device includes a lock detecting means for detecting a locked state of the door and a position determining means for determining a position of the portable device. If the communication start switch is operated within a predetermined time after the transition is detected and the portable device is in the vehicle, an alarm is issued.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a block diagram showing a vehicle-mounted device of a vehicle-mounted device remote control device according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 10 denotes a vehicle-mounted device. Hereinafter, the configuration of the vehicle-mounted device 10 will be described. 1
Reference numeral 1 denotes a vehicle-mounted transmitting antenna, 11a denotes a first vehicle transmitting antenna, and 11b denotes a second vehicle transmitting antenna. 1
Reference numeral 2 denotes an external transmitting antenna for vehicles, and reference numerals 12a to 12d denote first to fourth external transmitting antennas. Six transmitting antennas are provided as described above. As shown in FIG. 3, which will be described later, the in-vehicle transmission antenna 11a is installed on a center console in the vehicle interior, and the in-vehicle transmission antenna 11b is installed near the lower part of the rear seat. On the other hand, the transmitting antennas 12a to 12
12d is provided on, for example, a door handle of a vehicle (four-wheeled vehicle). Reference numeral 17 denotes a transmitting unit to which each antenna is connected, 18 denotes a receiving antenna, and 19 denotes a receiving unit to which the receiving antenna 18 is connected. 20 is a transmitting unit 17 and a receiving unit 1
Reference numeral 9 denotes a connected ECU (electronic control device), which controls the vehicle-mounted device 10.

The ECU 20 supplies the transmission section 17 with a transmission code and a signal designating one of the in-vehicle transmission antenna 11 and the out-of-vehicle transmission antenna 12, and modulates the transmission code with a code request signal of a frequency, for example, 134 kHz. Is transmitted from the designated transmitting antenna to the portable device. The vehicle has a receiving antenna 1
The signal of a frequency of, for example, 300 MHz from the portable device received by the receiving antenna 18 is demodulated by the receiving unit 19 and supplied to the ECU 20. Reference numeral 21 denotes a memory built in the ECU 20, which is constituted by a non-volatile memory such as an EEPROM that retains its stored contents even when the power is cut off. The memory 21 has a first question code and a third question code for door lock. , A plurality of different encryption keys corresponding to a second question code for starting the engine, an ID code for the transponder, and the like. 2
Reference numeral 2 denotes an operation detection unit that detects various switch operations by the user, for example, a start switch (a communication start switch that is a signal source for starting transmission of a code request signal) installed on each outer door handle, and an engine start operation. Of the start switch and the ignition switch (start, ignition on, accessory on, off, lock, etc.) for detecting the position of the vehicle, and supplies the operation detection signal to the ECU 20. Reference numeral 23 denotes a door opening / closing detecting unit which detects the individual opening / closing of all the doors and the locked / unlocked state of all the doors and supplies a detection signal to the ECU 20. Reference numeral 24 denotes a sensor group including various sensors for detecting a vehicle speed and an engine operating state, and detection signals from these various sensors are supplied to the ECU 20.

Reference numeral 25 denotes an answer-back device for turning on or off a vehicle horn as a so-called answer-back when the door is locked / unlocked, an alarm device for sounding a buzzer for various alarms, and a status display. Is a notification unit including the display device. Reference numeral 30 denotes an engine control unit connected to the ECU 20, which controls the start of the engine using a starter motor and also controls the stop of the driving of the engine. Reference numeral 32 denotes a steering lock unit having a mechanism for mechanically prohibiting steering operation. Reference numeral 34 denotes an immobilizer unit having a mechanism for inhibiting fuel supply to the engine and an ignition operation; 36, a door lock unit having a mechanism for locking / unlocking all doors; In a shift lock unit configured by a lock device that prohibits shifting to the range, a signal of permission / non-permission of unlocking is output from the ECU 20. Steering lock 3
2. The immobilizer unit 34, the door lock unit 36, the shift lock unit 38, and the notification unit 25 are connected to the ECU 20. 40 is an engine.

FIG. 2 is a block diagram showing a portable device of the on-vehicle device remote control device according to the first embodiment of the present invention.
In FIG. 2, reference numeral 50 denotes a portable device, the configuration of which will be described below. 52 is the ECU of the portable device 50, 53 is the ECU 5
In the memory 53, a plurality of different encryption keys for door lock and engine start, which are stored in the memory 21 of the vehicle-mounted device 10 if they are normal, are stored in the memory 53. ing. 54 is a transmitting antenna, 5
Reference numeral 5 denotes a transmitting unit to which the transmitting antenna 54 is connected, 56 denotes a receiving antenna, and 57 denotes a receiving unit to which the receiving antenna 56 is connected. The transmission unit 55 and the reception unit 57 are connected to the ECU 52. 58 is a notification unit connected to the ECU 52;
Denotes an operation detection unit that detects a switch operation by a user and notifies the ECU 52 of the operation.

Onboard unit 10 received by receiving antenna 56
The interrogation signal having a frequency of, for example, 134 kHz is demodulated by the receiving unit 57 and supplied to the ECU 52. ECU 52
Reads the encryption key corresponding to the interrogation signal from the memory 53, encrypts the interrogation code in the interrogation signal, creates a response signal, supplies the response signal to the transmission unit 55, and modulates the frequency modulated by the transmission unit 55, for example, 300 MHz. The signal is transmitted from the transmission antenna 54 to the vehicle-mounted device 10 as a signal. In addition, the portable device 50 is provided with a LOCK key / UNLO for remotely operating lock / unlock of a door as a keyless entry function.
These signals are input to the ECU 52 from the operation detection unit 59.

FIG. 3 is a schematic diagram showing communication between the vehicle-mounted antenna and the portable device of the vehicle-mounted device remote control device according to the first embodiment of the present invention. FIG. 3A shows a case where the portable device 50 is outside the vehicle. FIG. 3B shows a case where the portable device 50 is inside the vehicle. In FIG. 3, 11a, 11b, 12a-
12d and 18 are the same as those in FIG. 1, and 50 is the same as that in FIG.

Next, communication between each antenna of the vehicle-mounted device 10 and the portable device 50 will be described with reference to FIG. A so-called challenge-response method (secret key encryption-based authentication method) will be described as an example of a method (an authentication method) for checking whether a portable device is an authorized registration machine. A frequency 134 is transmitted from each of the transmitting antennas 11 and 12 of the vehicle-mounted device 10.
When a code request signal of kHz is transmitted and the portable device 50 receives the code request signal = interrogation signal, the portable device 50 modulates a response code (ciphertext) created from the encryption key and the inquiry code (plaintext) corresponding to the received interrogation signal. Frequency 300MHz
Is returned. Receiving antenna 18 of vehicle-mounted device 10
The signal having the frequency of 300 MHz received by the
Is demodulated and supplied to the ECU 20, and the ECU 20 receives the response signal. The in-vehicle device 10 checks whether or not the portable device 50 is a legitimate registration device by comparing the received response code with the encrypted text created with the encryption key corresponding to the transmitted question code (plaintext). Each transmitting antenna 11 mounted on the vehicle,
The low frequency (hereinafter abbreviated as LF) is used for the communication from the mobile device 12 to the portable device 50 because the strength of the electromagnetic wave is set to the cube of the distance in the electromagnetic wave so that the position of the portable device 50 can be easily confirmed. Because the inversely proportional magnetic field component is used, the normal communication distance is 1 m
Before and after. On the other hand, the communication from the portable device 50 to the on-vehicle receiving antenna 18 uses the UHF band, which is normally a communication distance of 5 to 20 m.

FIG. 4 is a diagram showing communication signals of the onboard equipment remote control device according to the first embodiment of the present invention. FIG.
FIG. 3 is a state transition diagram showing control performed by the ECU of the on-vehicle device of the on-vehicle device remote control device according to Embodiment 1 of the present invention;
2 shows a basic operation of the first embodiment. FIG. 6 is a flowchart showing the control performed by the ECU of the portable device of the in-vehicle device remote control device according to the first embodiment of the present invention, and shows the basic operation of the first embodiment.

Next, control executed by the ECU of the vehicle-mounted device will be described with reference to FIG. The control state of the ECU 20 is set to a state 100 based on the determination result of the position of the portable device 50.
(Outside the LF communication range), state 160 (outside the LF communication range),
There are a state 180 (LF communication area) and a state 140 (LF communication area) as the sum of the state 160 and the state 180. The route (arrow line) and the branch point (open circle 170 in FIG. 5) are in the middle of the transition between the control states, and do not stay there. The transition between the state and the branch point is performed when the condition (input) at the upper left of / described on the route is satisfied, and the transition is executed on the route (hereinafter, the transition is executed on the route). In this case, the item (output) at the lower right of / is executed during the migration of the route (if there is no input or output, there is no description).

A microcomputer (hereinafter abbreviated as “microcomputer”) built in the ECU 20 starts a program start state from a state 100. In state 100, when the activation switch detected by the operation detection unit 22 changes from off to on, the path 101 is executed, and the first interrogation signal is transmitted from the antenna outside the vehicle. In this case, the start switch and the outside transmitting antennas 12a to 12d attached near each outer door handle correspond to each other, and are transmitted from the outside transmitting antenna 12 attached to the same door as the start switch turned on from off. . When the portable device is located in the LF communication area and the response code is correct, the route 102 is executed, the door is unlocked, and the process proceeds to the state 160 (the state is also the state 140). Next, when the door is opened / closed for boarding, the door opening / closing detection unit 23 detects the opening / closing of the door, the path 141 is executed, and the second interrogation signal is transmitted to the first in-vehicle antenna 1.
1a. If the second response signal from the portable device 50 is correct, the path 161 is executed and the state 180 is executed.
Move to

In the state 180, when entering the state 180, the ECU 20 outputs a steering lock release signal to the steering lock unit 32 and controls the immobilizer unit 34 to release the prohibition of fuel supply to the engine 40. At the same time, in this state, the ignition switch is also enabled, and the engine 40 can be started by turning the ignition switch. However, the period during which the immobilizer unit 34 releases the prohibition of fuel supply to the engine 40 for ensuring security is a predetermined time (for example, 5 minutes) after entering the state 180, and thereafter expires. As means for re-enabling, for example, a start switch is provided, which is a mechanism for rotating by pushing an ignition switch and outputting a signal when pushed. When the start switch is turned on, the path 141 is executed, and if the second interrogation signal is transmitted from the in-vehicle transmitting antenna 12 and the corresponding correct second response signal is received, the path 161 or the path 182 is executed and the state 180 is entered. The ECU 20 controls the immobilizer unit 34 to release the prohibition of fuel supply to the engine 40.

When the door is opened / closed in the state 180, the door opening / closing detector 23 detects the opening / closing of the door, the path 141 is executed, and the second interrogation signal is transmitted from the first in-vehicle antenna 11. You. When a correct second response signal is received from the portable device 50, such as when the door is opened and closed by the portable device holder, the path 182 is executed and the state does not change. On the other hand, when the correct second response signal cannot be received from the portable device, such as when the portable device holder gets off the vehicle, the route 181 is executed, and the third interrogation signal is transmitted from the outside transmitting antenna attached to the opened / closed door. Is transmitted, and the state changes to the state 160. Although not shown in FIG. 5 at the time of execution of the shift to the path 181, if the ignition switch is returned to the lock position, the ECU 20 controls the immobilizer unit 34 to prohibit the supply of fuel to the engine 40. When the ignition switch is set to the lock position, the steering lock is mechanically operated by the steering lock mechanism.

In state 160, if a correct third response signal is received from the portable device, path 162 is executed and the state does not change at 160. On the other hand, when the correct third response signal is not received from the portable device 50, the path 142 is executed, and the notification unit 25 issues an alarm that the door lock has been forgotten.
Move to state 100. In state 160, the portable device holder operates the start switch to lock the door after getting off the vehicle. When the start switch detected by the operation detection unit 22 changes from off to on, the path 143 is executed, and the start switch is executed. The first interrogation signal is transmitted from the external antenna corresponding to. When the correct first response signal is received from the portable device 50, the path 163 is executed, and the branch point 170 is reached.
At the branch point 170, if all the doors are closed and the ignition switch is in the lock position, the path 171 is executed, a lock is output to the door lock unit 36, and an answer that informs the portable device holder that the door is correctly locked is provided. If the back signal is output from the notification unit 25, on the other hand, if all the doors are not closed or the ignition switch is not in the lock position at the branch point 170, the path 172 is executed, and the notification unit 25 issues an alarm that the door is open and cannot be locked. Output. In either case, the state transitions to state 100. On the other hand, a remote operation signal (LOCK signal / UNLOCK) from the portable device 50 which is a conventional keyless entry function.
5), the door is locked / unlocked irrespective of the above state, although not shown in FIG.

The first to third interrogation signals and the corresponding first
FIG. 4 shows an example of the configuration of the response signals # 3 to # 3. FIG. 4A shows the structure of an interrogation signal, which includes a preamble (for example, 16 bits), a fixed ID code (for example, 20 bits) composed of fixed-length ID information, an additional code including information such as a question number,
It is composed of a plain text (for example, 32 bits) question code that is randomly generated every time, a fixed ID code, an additional code (for example, 8 bits), and a parity code generated from the question code. FIG. 4 (b) shows the structure of the response signal, which is a fixed I consisting of preamble and fixed length ID information.
D code, an additional code including information such as a question number, a response code that is an encrypted text obtained by encrypting a question code received with an encryption key corresponding to the question number, and a fixed ID code, an additional code, and a response code. It is composed of a parity code.

When a keyless entry for controlling locking / unlocking of a vehicle door is performed by pressing a button provided on the portable device 50, a remote control signal is as follows:
As shown in FIG. 4C, a rolling code is set instead of the response code. The rolling code is the portable device 50
Is a value that is counted up every time a radio wave is transmitted,
The in-vehicle device 10 stores the rolling code included in the predetermined code received from the portable device 50 last time, and the rolling code included in the predetermined code received this time is within a predetermined range from the value of the previous rolling code. , The current rolling code is determined to be correct,
It is determined that the received predetermined code matches the specific code. This additional code includes identification information of the response signal and the remote control signal.

Next, the operation of the portable device 50 will be described with reference to the flowchart of FIG. ECU 52 for battery replacement, etc.
Is started from the reset state, the process starts from START (step 500), the initialization of the ECU 52 is performed in step 501, and the process waits for step 502. In step 503, if there is a LOCK key input, WAKE U
P (step 504), LOCK which is a remote control signal
A signal is transmitted (step 505). After the transmission is completed, the process returns to step 502. If there is no LOCK key input in step 503, the process proceeds to step 506. Step 506
If there is UNLOCK key input, WAKE UP
(Step 507), and UNLO which is a remote control signal
A CK signal is transmitted (step 508). After sending,
Return to step 502. UNLOCK at step 506
If there is no key input, go to step 509. Step 5
In step 09, if there is a reception (LF reception) from the onboard unit, WA
KE UP (step 510) and a response signal are transmitted (step 511). After the transmission is completed, the process returns to step 502. If no interrogation signal is received in step 509, the process proceeds to step 502.

As described above, only when the start switch is operated or when the door is opened and closed, the fixed I
The D code is arranged, the in-vehicle device transmits a modulated signal of an interrogation signal including the interrogation code, and the portable device, when the interrogation signal is received, modulates the modulated signal of the response signal including the response code corresponding to the interrogation signal. The mobile device receives the response signal and checks the response code in the response signal against the question code sent by the mobile device and the encryption code created from the corresponding encryption key, and determines that the mobile device is a legitimate mobile device. , The security can be maintained and the power saving of both the in-vehicle device and the portable device can be achieved. If the fixed ID at the beginning of each signal of the question and the response does not match its own ID, it is preferable that both the portable device and the on-vehicle device do not shift from the low power consumption mode to the normal power consumption mode. Becomes The above is the basic operation of the in-vehicle device remote control device according to the first embodiment.

By the way, when the parking place of the vehicle is relatively close to the place where the portable device is placed, there is a problem that the door unlocking is operated when another person who does not possess the portable device operates the start switch. . The solution to this problem is a smart entry function prohibition process using a test signal (confirmation signal) described below. FIG. 7 is a diagram showing the EC of the on-vehicle device of the on-vehicle device remote control device according to Embodiment 1 of the present invention.
FIG. 10 is a state transition diagram showing control performed by U, and relates to a smart entry function prohibition process. FIG. 8 is a flowchart showing the control performed by the ECU of the portable device of the in-vehicle device remote control device according to Embodiment 1 of the present invention, and relates to the smart entry function prohibition process.

In FIG. 7, the state of the on-vehicle unit is in a state 100 after getting off the vehicle and ending the door lock operation. When the portable device holder wants to confirm whether or not the portable device 50 is in an area where the LF communication can be performed with the in-vehicle device 10, a push button switch (operation switch) for instructing remote control of operation means of the portable device 50, for example, door lock By operating (), a test request signal is transmitted from the transmission antenna 54. Others
The description is omitted because it is the same as the description of FIG. 5 described above. The configuration of the test request signal is, for example, a LOCK signal which is a normal remote control signal as shown in FIG. When the in-vehicle device receives the test request signal (LOCK signal), the path 103 is executed, and a test signal (confirmation signal) for confirming the reception state of the portable device is sequentially transmitted from the external antennas 12a to 12d. The configuration of this test signal is, for example, the configuration shown in FIG. 4A, in which the additional code includes information identifying the test signal.

Referring to FIG. 8, in step 509, the ECU 52 of the portable device receives the LF and wakes up (step 510), and if the prohibition flag is cleared in step 601, in step 602, whether the received signal is an interrogation signal or a test signal. Is determined, and if the signal is a test signal, the process proceeds to step 603, and the notifying unit 58 notifies that the signal can be received. If the prohibition flag is set in step 601, it means that the smart entry function has been stopped, and the process returns to the standby mode (step 502). The portable device holder that has confirmed the reception status in step 603 turns on the LOCK key and the UNLOCK key simultaneously for a predetermined period of time (5 seconds or more in this example) to temporarily stop the smart entry function. In this case, in the flowchart of FIG.
At 05, it is confirmed that the LOCK key and the UNLOCK key are simultaneously turned on, and the process proceeds to step 606. If the two keys are continuously pressed for 5 seconds or more at step 606, a prohibition flag is set at step 607. In this example, the prohibition flag is cleared when only the UNLOCK key is pressed. This is the processing of step 604. The other steps in FIG. 8 (500th steps) are the same as those in FIG.

FIG. 9 is a flowchart showing another control performed by the ECU of the portable device of the on-vehicle device remote control device according to the first embodiment of the present invention, and relates to the smart entry function prohibition process. In FIG. 8, the prohibition flag is set by a special operation of the switch (simultaneously turning on the lock and the unlock key), but FIG. 9 shows an example in which this is automatically performed. In FIG. 9, when the signal received in step 602 is a test signal, a prohibition flag is set in step 603. 8 and 9,
This prohibition flag is cleared in step 604 when the unlock key is operated, but may be cleared after a predetermined time (for example, one hour) has elapsed from the flag setting. In FIG. 7, the condition for executing the route 103 is simply a remote signal. However, a special combination of remote signals may be used. For example, it is assumed that a plurality of LOCK signals are received within a predetermined time (for example, 5 seconds). This is preferable because it can be distinguished from normal operation.

According to the first embodiment, means for transmitting a test signal for confirming a reception state of a portable device in response to a remote control signal from the portable device, and an operation state based on code collation when a test signal can be received. Since the means for prohibiting control is provided, the communication area of the portable device can be confirmed, and if necessary, control of the operating state by code collation can be prohibited, and security can be improved. Also,
Since the test request signal is a normal door lock signal, the test request signal can be executed without adding a special operation key for transmitting the test request signal and without increasing the kinds of codes, and the door lock operation and the LF reception state can be performed. The convenience that confirmation can be performed by one operation can be improved.

Further, a notifying means for notifying the receiving state of the test signal is provided, and when the test signal can be received, it is possible to notify the holder when the test signal can be received. The owner can select whether to implement the prohibition means or move to a position where reception is not possible without prohibition, thereby improving convenience.

Embodiment 2 In the first embodiment, upon receiving the UNLOCK signal of the remote control signal from the portable device, the on-vehicle device immediately unlocks all the doors.
This poses a problem that the portable device holder may be intruded by another person before reaching the target door. The solution to this problem is the cooperative operation of keyless entry and smart entry described below.

FIG. 10 is a state transition diagram showing control performed by the ECU of the vehicle-mounted device of the vehicle-mounted device remote control device according to the second embodiment of the present invention, and relates to the cooperative operation performed by the ECU 20. In FIG. 10, when the unlock signal of the remote control signal is received from the portable device 50 in the state 100, the path 194 is executed, and thereafter the path 194 is performed for a predetermined time (for example, 5 minutes) or at a constant cycle until the state 100 is not reached ( An interrogation signal is transmitted from the outside transmitting antenna 12 (for example, every 0.3 seconds). If the portable device holder approaches the door and approaches the distance where the interrogator can receive the interrogation signal, a response signal is returned, and if the verification is successful, only the door with the out-of-vehicle transmitting antenna that was transmitted immediately before, or that door , Two doors on the same side (right or left) or all doors are unlocked. Other details are the same as those described with reference to FIG.

According to the second embodiment, when the remote control signal for unlocking the door is received, the transmission of the code request signal is started, so that the door is held until the portable device holder approaches the door. The door is locked and security can be improved, and by transmitting an unlock signal of the remote operation signal in advance, the door is unlocked without operating the start switch, thereby improving convenience.
Moreover, compared to a system that constantly transmits a code request signal from an onboard unit without using a start switch, the code request signal is transmitted periodically only when necessary,
There is an advantage of power saving.

Embodiment 3 In the second embodiment, when going out of the vehicle with the engine running, there is a problem that the movement of the vehicle due to careless operation of a child in the vehicle compartment cannot be prohibited. In order to solve this problem, a release non-permission setting process of a lock mechanism that is locked so as not to shift from a P (parking) position of a transmission gear to another position described below (hereinafter simply referred to as shift lock release) This is described as a non-permission setting process).

FIG. 11 is a state transition diagram showing the control performed by the ECU of the on-vehicle device of the on-vehicle device remote control device according to the third embodiment of the present invention. . A case will be described in which the portable device holder goes out of the vehicle with the engine running from the driver's seat and operates the start switch to perform shift lock release non-permission setting processing. In FIG. 11, starting from the state 180, the path 141 is implemented by opening and closing the door, and the second interrogation signal is transmitted from the in-vehicle transmitting antenna 11,
Since the portable device holder is outside the vehicle, the second response signal is not received (the position of the portable device is determined by the position determining means), so that the route 181 is implemented, and the third interrogation signal is transmitted from the external transmitting antenna 12. , To the state 160. In the state 160, since the third response signal is received, the path 16
2 is performed and remains in this state.

After a while, the start switch is operated.
When the path 143 is executed, the first interrogation signal is transmitted from the out-of-vehicle transmitting antenna 12, and the correct first response signal is received, the path 163 is executed to reach the branch point 170. At the junction 170, if the ignition switch is in the lock position and all doors are closed, the path 171 is executed,
The door is locked, and the state 100 is entered. On the other hand, if the ignition switch position is other than locked, it is determined that the engine is running (the engine operation determining means determines that the engine is operating), the path 172 is executed, and the shift lock of the transmission gear is not released. The state is permitted (shift lock release is not permitted by the shift lock release permission means), an alarm is issued, and the state shifts to state 100. If the ignition switch is in the lock position and all doors are not closed, the path 173 is executed,
It issues an alarm and moves to state 100. Others are the same as those described with reference to FIG.

According to the third embodiment, when it is determined that the portable device is outside the vehicle compartment, when it is determined that the engine is operating, and when the start switch is operated, release of the transmission gear shift lock is not permitted. As a result, the vehicle can be prevented from moving even when the engine is running, and the convenience and security can be improved.

Embodiment 4 In the third embodiment, the shift lock release non-permission setting process is performed when the start switch is operated, but it is also assumed that the start switch is not operated. In the fourth embodiment, even if the start switch is not operated, the shift lock release non-permission setting process is performed.

FIG. 12 is a state transition diagram showing control performed by the ECU of the vehicle-mounted device of the vehicle-mounted device remote control device according to the fourth embodiment of the present invention. . The shift lock release non-permission setting process when it is determined that the portable device holder has left the vehicle with the engine running from the driver's seat will be described. FIG.
, Starting from the state 180, when the door is opened → closed, the path 141 is executed, and the second interrogation signal is transmitted from the in-vehicle transmitting antenna 11, but since the portable device holder is outside the vehicle, the second response signal is received. Is not performed (the position of the portable device is determined by the position determining means), so that the route 181 is implemented,
The third interrogation signal is transmitted from the transmitting antenna 12 outside the vehicle, and reaches the branch point 190. If the ignition switch position is other than locked at the branch point 190, it is determined that the engine is running (it is determined that the engine is operating by the engine operation determining means), the route 191 is executed, and the transmission gear shift lock release disabling process (shift) The shift release is prohibited by the lock release permission means), and the state 160
To reach. If the ignition switch position is locked, a path 192 that does nothing is executed, and the state 160
To reach. After that, it is the same as the description of FIG.

According to the fourth embodiment, when it is determined that the portable device is located outside the vehicle compartment and the engine is determined to be operating, the transmission gear shift lock release is not permitted. The vehicle can be prevented from moving even if it is left, and convenience and security can be improved.

Embodiment 5 FIG. In the fourth embodiment, when the user leaves the vehicle with the portable device left inside the vehicle, the problem is that the warning of leaving the vehicle inside the vehicle has not been issued. A solution to this problem is a vehicle interior misplacement warning process according to a fifth embodiment described below.

FIG. 13 is a state transition diagram showing the control performed by the ECU of the vehicle-mounted device of the vehicle-mounted device remote control device according to the fifth embodiment of the present invention. . A description will be given of a process of issuing a warning of leaving the vehicle in the vehicle compartment when the portable device holder leaves the vehicle with the portable device in the vehicle compartment from the driver's seat. FIG.
3, starting from the state 180, the path 141 is implemented by opening and closing the door (detected by the lock detecting means),
Although the second interrogation signal is transmitted from the in-vehicle transmission antenna 11, the portable device is in the vehicle interior, so the second response signal is received (the position of the portable device is determined by the position determination means), and the route 186 is performed. Then, a branch point 185 is reached. Junction 1
In step 85, it is detected whether or not the start switch of the door corresponding to the predetermined time (for example, within 10 seconds) after the door is opened and closed is turned on. If the switch is turned on, it is determined that the portable device is left in the vehicle compartment. Then, an alarm is issued and the process returns to the state 180. If the activation switch of the corresponding door is not turned on at the branch point 185, the path 187 is executed, and the state returns to the state 180 without any output. Other details are the same as those described with reference to FIG.

According to the fifth embodiment, when it is determined that the position of the portable device is in the vehicle compartment and the operation of the start switch is detected, the portable device is warned of being left in the vehicle compartment, thereby improving security. be able to.

[0048]

Since the present invention is configured as described above, it has the following effects. A portable device that transmits a remote control signal for remotely controlling the in-vehicle device, a code request signal is transmitted to the portable device, and the operation of the in-vehicle device is controlled according to a response code returned from the portable device; An in-vehicle device that transmits a confirmation signal to the portable device based on a specific remote control signal transmitted to confirm whether or not the portable device can receive the portable device. Since the control of the operation of the mobile device is prohibited, the control of the operation of the vehicle-mounted device by the vehicle-mounted device can be prohibited by the communication area of the portable device, and the security can be improved.

Further, a portable device having an operation switch for forming a remote operation signal for remotely controlling the vehicle-mounted device and transmitting a remote operation signal formed by operating the operation switch, a code request signal to the portable device And send
The mobile device controls the operation of the in-vehicle device according to the response code returned from the mobile device, and sends a confirmation signal to the mobile device based on a specific remote control signal transmitted from the mobile device to confirm whether the mobile device can receive the signal. The mobile device is provided with a transmitting on-vehicle device. When the mobile device receives the confirmation signal, the operation switch is operated to prohibit the control of the operation of the on-vehicle device by the on-vehicle device. By confirming the area, the control of the operation of the in-vehicle device by the in-vehicle device can be prohibited, and the security can be improved.

Since the specific remote control signal transmitted by the portable device is a door lock control signal for instructing a door lock, it is not necessary to increase the number of operation keys and codes for forming the specific remote control signal. Furthermore, since the portable device notifies the reception of the confirmation signal transmitted from the vehicle-mounted device, the holder can confirm the communication area of the portable device.

Also, a portable device for transmitting a remote control signal for remotely controlling an on-vehicle device for locking and unlocking, and transmitting a code request signal to the portable device when receiving a remote control signal for unlocking from the portable device. The on-board unit that controls locking and unlocking of the on-board device according to the response code returned from the portable device is provided, so unlocking by remote control is performed according to the response from the portable device, Performance can be improved.

Further, position determining means for determining the location of the portable device, engine operation determining means for determining whether or not the engine is operating, and shift lock release permitting means for permitting release of the transmission gear shift lock of the vehicle. When the communication start switch is operated, the in-vehicle device disables the transmission gear shift lock release by the shift lock release permission means when the portable device is outside the vehicle and the engine is operating. Therefore, the vehicle can be prevented from moving even when the engine is running.

Further, position determining means for determining the location of the portable device, engine operation determining means for determining whether or not the engine is operating, and shift lock release permitting means for permitting release of the transmission gear shift lock of the vehicle. When the portable device is outside the vehicle and the engine is operating, the vehicle-mounted device disables the transmission gear shift lock release by the shift lock release permission means, so even if the engine is running, The movement of the vehicle can be prevented.

Further, the vehicle includes an on-vehicle device having lock detecting means for detecting the locked state of the door and position determining means for determining the position of the portable device, wherein the on-vehicle device switches from the unlocked state of the door to the locked state. If the communication start switch is operated within a predetermined time after the detection of the shift and the portable device is in the vehicle, an alarm is issued, so that an alarm that the portable device is left in the vehicle can be issued.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a vehicle-mounted device of a vehicle-mounted device remote control device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a portable device of the in-vehicle device remote control device according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram showing communication between an in-vehicle antenna and a portable device of the in-vehicle device remote control device according to the first embodiment of the present invention.

FIG. 4 is a diagram showing communication signals of the on-vehicle device remote control device according to the first embodiment of the present invention.

FIG. 5 is a state transition diagram showing control performed by the ECU of the vehicle-mounted device of the vehicle-mounted device remote control device according to the first embodiment of the present invention.

FIG. 6 is a flowchart showing control performed by the ECU of the portable device of the on-vehicle device remote control device according to the first embodiment of the present invention.

FIG. 7 is a state transition diagram showing control performed by the ECU of the vehicle-mounted device of the vehicle-mounted device remote control device according to the first embodiment of the present invention.

FIG. 8 is a flowchart showing control performed by the ECU of the portable device of the on-board device remote control device according to the first embodiment of the present invention.

FIG. 9 is a flowchart showing another control performed by the ECU of the portable device of the in-vehicle device remote control device according to the first embodiment of the present invention.

FIG. 10 is a state transition diagram showing control performed by the ECU of the on-vehicle device of the on-vehicle device remote control device according to the second embodiment of the present invention.

FIG. 11 is a state transition diagram showing control performed by an ECU of an in-vehicle device of the in-vehicle device remote control device according to Embodiment 3 of the present invention.

FIG. 12 is a state transition diagram showing control performed by an ECU of an in-vehicle device of the in-vehicle device remote control device according to Embodiment 4 of the present invention.

FIG. 13 is a state transition diagram showing control performed by the ECU of the in-vehicle device of the in-vehicle device remote control device according to the fifth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Onboard equipment, 11 In-vehicle transmitting antenna, 12 Out-vehicle transmitting antenna, 18 Receiving antenna, 19 Receiving part, 20
ECU, 21 memory, 22 operation detection unit, 23 door open / close detection unit, 24 sensor group, 25 notification unit, 30
Engine control unit, 32 Steering lock unit, 34
Immobilizer, 36 door lock, 38 shift lock, 40 engine, 50 portable, 52 EC
U, 53 memory, 54 transmission antenna, 55 transmission unit, 56 reception antenna, 57 reception unit, 58 notification unit, 59 operation detection unit.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E250 AA21 BB08 BB12 CC18 CC24 CC27 CC28 DD06 EE02 FF24 FF27 FF36 HH01 JJ01 KK03 LL00 LL01 LL18 QQ02 SS01 SS02 SS04 SS05 SS08 SS09 UU02 UU03 VV00

Claims (8)

[Claims] 1. A portable device for transmitting a remote control signal for remotely controlling an in-vehicle device, transmitting a code request signal to the portable device, and controlling the operation of the on-vehicle device in accordance with a response code returned from the portable device. In addition, based on a specific remote control signal transmitted from the portable device, a vehicle-mounted device that transmits a confirmation signal to the portable device to confirm whether the portable device can receive, the portable device, the portable device, the confirmation signal And receiving control signal from the in-vehicle device to prohibit the operation of the in-vehicle device. 2. A portable device having an operation switch for forming a remote operation signal for remotely controlling an on-vehicle device and transmitting a remote operation signal formed by operating the operation switch, a code request signal for the portable device. And controls the operation of the in-vehicle device according to the response code returned from the portable device, and confirms whether the portable device can receive based on a specific remote control signal transmitted from the portable device. The portable device includes a vehicle-mounted device that transmits a confirmation signal to the portable device. When the portable device receives the confirmation signal, the operation switch is operated to prohibit the operation of the vehicle-mounted device from being controlled by the vehicle-mounted device. An in-vehicle device remote control device characterized in that it is configured to: 3. The on-vehicle device remote control device according to claim 1, wherein the specific remote control signal transmitted by the portable device is a door lock operation signal for instructing a door lock. 4. The on-vehicle device remote control device according to claim 1, wherein the portable device notifies the reception of the confirmation signal transmitted from the on-vehicle device. 5. A portable device for transmitting a remote control signal for remotely controlling an in-vehicle device for locking and unlocking, and when receiving a remote control signal for unlocking from the portable device, transmitting a code request signal to the portable device. And a vehicle-mounted device that controls locking and unlocking of the vehicle-mounted device according to a response code returned from the portable device. 6. An in-vehicle device that starts communication by operating a communication start switch and a portable device with which the in-vehicle device communicates, wherein the in-vehicle device operates the communication start switch. By transmitting a code request signal to the portable device and controlling the operation of the on-vehicle device according to the response code returned from the portable device, the in-vehicle device remote control device determines the location of the portable device. The vehicle-mounted device includes: a position determination unit that determines whether the engine is operating; an engine operation determination unit that determines whether the engine is operating; and a shift lock release permission unit that permits release of a transmission gear shift lock of the vehicle. When the communication start switch is operated and the portable device is outside the vehicle and the engine is operating, the transmission gear shift by the shift lock release permitting means is performed. An in-vehicle device remote control device characterized in that unlocking is not permitted. 7. An on-vehicle device remote control device including a portable device and a vehicle-mounted device that transmits a code request signal to the mobile device and controls the operation of the vehicle-mounted device according to a response code returned from the portable device. An on-vehicle device having position determining means for determining the location of the portable device, engine operation determining means for determining whether the engine is operating, and shift lock release permitting means for permitting transmission gear shift lock release of the vehicle. The above-mentioned in-vehicle device, the above-mentioned portable device is outside the car,
An on-vehicle device remote control device, wherein when the engine is operating, the transmission gear shift lock release by the shift lock release permission means is not permitted. 8. An in-vehicle device that starts communication by operating a communication start switch and a portable device with which the in-vehicle device communicates, wherein the in-vehicle device operates the communication start switch. By transmitting a code request signal to the portable device and detecting the locked state of the door in the on-vehicle device remote control device configured to control the operation of the on-vehicle device according to the response code returned from the portable device An on-vehicle device having lock detection means and position determination means for determining the location of the portable device, wherein the on-vehicle device is provided within a predetermined time after the transition of the door from the unlocked state to the locked state is detected. The communication start switch is operated,
An on-vehicle device remote control device that issues an alarm when the portable device is in a vehicle.