WO1999036296A1 - Commande a distance situee dans un vehicule - Google Patents
Commande a distance situee dans un vehicule Download PDFInfo
- Publication number
- WO1999036296A1 WO1999036296A1 PCT/JP1999/000101 JP9900101W WO9936296A1 WO 1999036296 A1 WO1999036296 A1 WO 1999036296A1 JP 9900101 W JP9900101 W JP 9900101W WO 9936296 A1 WO9936296 A1 WO 9936296A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vehicle
- request signal
- portable device
- predetermined
- remote control
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/2009—Antitheft state indicator
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
Definitions
- the present invention relates to a vehicle-mounted device remote control device that controls the operation of a vehicle-mounted device such as a door lock based on communication with a portable device.
- interference may occur and sufficient communication may not be performed.
- IDs are sent from multiple mobile devices simultaneously. This Therefore, the vehicle cannot receive the ID, and even if one of the portable devices is the correct portable device, remote control cannot be performed.
- ID requests are sent from both vehicles. Therefore, while responding to an ID request sent from one vehicle, an ID request may be issued from another vehicle. In this case, the mobile device responds to the previous ID request and does not respond to the subsequent ID request. For this reason, if the vehicle that issued the later ID request is a vehicle that corresponds to the portable device, the portable device always responds to the vehicle that issued the ID request earlier, and therefore responds to the latter ID request. Without it, remote control cannot be performed.
- the present invention when a plurality of vehicles and a plurality of portable device is also present, c also an object to provide a vehicle equipment remote operating control device reliable remote control of vehicle equipment performed, invention, illegal
- the purpose is to effectively prevent remote operation by simple communication.
- the present invention is an in-vehicle device remote control device that is mounted on a vehicle and controls the operation of a predetermined in-vehicle device based on communication with the mobile device.
- An ID request signal transmitting device for intermittently transmitting the ID
- an ID receiving unit for receiving an ID signal from the portable device
- a collating unit for collating the ID received by the ID receiving unit with a predetermined correct ID.
- device operation control means for operating the predetermined in-vehicle device when the verification is performed by the verification means, and transmitting the ID request signal when a state in which verification cannot be performed is detected by the verification means. Is controlled in the direction to suppress.
- one portable device receives ID request signals from two vehicles, Returns a response to the ID request signal. If the mobile device is not for the vehicle that returned the response, the ID verification fails. In this case, in the present invention, control is performed to suppress the generation of an ID request signal in a vehicle for which ID verification has failed. As a result, the portable device can respond to the ID request signal from another vehicle, and can remotely control the other vehicle. In addition, since the ID request signal is suppressed, it is possible to limit the number of tries due to unauthorized communication.
- the collating unit includes a comparing unit that compares the received ID with a correct ID from the head of the received ID in association with an operation of receiving the received ID by the ID receiving unit.
- the ID from the portable device is sent in response to the ID request signal from the vehicle. Therefore, the received ID has a known beginning and can be compared with the stored ID in the order in which the received ID is received one bit at a time. Then, when a difference is found by this, communication can be terminated at that point, radio wave traffic can be reduced, and power consumption can be reduced.
- the detection of the state in which the collation cannot be performed by the collation means is performed based on at least a plurality of times that the reception ID is incorrectly detected.
- One discrepancy detection may be based on bursty errors. Therefore, if the transmission of the ID request signal is suppressed immediately, unnecessary delay is likely to occur. Such erroneous determination can be prevented by suppressing the transmission of the ID request signal based on a plurality of differences.
- the ID request signal transmitting means increases the transmission level of the ID request signal when a predetermined manual operation is performed by a user after the transmission of the ID request signal is suppressed. It is.
- the transmission of the ID request signal is suppressed by lowering the transmission level of the ID request signal.
- the portable device can receive another ID request signal.
- ID By stopping the transmission of the request signal, it is possible to limit the attempts due to unauthorized communication.
- the suppression of the transmission of the ID request signal is performed by lengthening a suspension period of the transmission of the intermittent ID request signal. By changing the ID request signal transmission interval, radio wave collision can be easily and reliably resolved.
- the present invention is an in-vehicle device remote control device mounted on a vehicle and controlling an operation of a predetermined in-vehicle device based on communication with the mobile device, wherein the remote control device transmits an ID request signal to the mobile device.
- ID request signal transmitting means for intermittently transmitting at an interval of ID;
- ID receiving means for receiving an ID signal from the portable device; and collating means for collating the ID received by the ID receiving means with a predetermined correct ID.
- device operation control means for operating a predetermined in-vehicle device when the collation by the collation means is successful, wherein the transmission cycle of the ID request signal in the collation means can be individually set. I do.
- the present invention is an in-vehicle device remote control device mounted on a vehicle and controlling an operation of a predetermined in-vehicle device based on communication with the mobile device, wherein the remote control device transmits an ID request signal to the ID request signal transmitting means for intermittently transmitting at an interval of ID; ID receiving means for receiving an ID signal from the portable device; and collating means for collating the ID received by the ID receiving means with a predetermined correct ID. And device operation control means for operating a predetermined in-vehicle device when the verification by the verification means is completed, wherein the transmission cycle of the ID request signal in the verification means is changed by a predetermined method. C By changing the transmission cycle of the ID request signal in this way, it is possible to effectively prevent the ID request signals from a plurality of vehicles from continuously colliding.
- the present invention is an in-vehicle device remote control device mounted on a vehicle and controlling an operation of a predetermined in-vehicle device based on communication with the mobile device, wherein the remote control device transmits an ID request signal to the mobile device.
- ID request signal transmitting means for intermittently transmitting at an interval of ID;
- ID receiving means for receiving an ID signal from the portable device; and collating means for collating the ID received by the ID receiving means with a predetermined correct ID.
- device operation control means for operating a predetermined in-vehicle device when the collation by the collation means is obtained. After the state where D is incorrect is detected a plurality of times, even if the receiving means receives a legitimate ID signal, the operation of the on-vehicle device is prohibited.
- the present invention is mounted on a vehicle, and based on communication with a portable device, a predetermined on-board device
- An on-vehicle device remote control device for controlling the operation of a device comprising: an ID receiving means for receiving an ID signal from the portable device; and a collation for collating the ID received by the ID receiving means with a predetermined correct ID.
- Means, and device operation control means for operating a predetermined in-vehicle device when the collation by the collation means is obtained. Even when an ID signal is received, the operation of the on-vehicle device is prohibited.
- the ID request signal transmitting means transmits a car number determined for each vehicle, and upon receiving a response thereto, transmits an ID request signal which is a challenge code including random numbers,
- the collation means preferably collates a correct ID by including a response code generated in a predetermined manner based on the challenge code in a response to the challenge code from the portable device. It is.
- Communication can be performed by specifying the key of the vehicle, and communication that is difficult to decode can be performed using the challenge code.
- the collation unit collates that a response to the challenge code from the portable device includes a fixed code for identifying the portable device registered in advance.
- the portable device can be identified by the fixed code, and the portable device can be confirmed.
- the control contents of the in-vehicle device can be changed by the portable device.
- the collation unit detects a situation where the fixed code from the portable device is correct and the response code is incorrect, and when this state is detected a plurality of times, it is preferable to determine that collation cannot be performed.
- a display means for displaying a message when the collation is not successful by the collation means.
- FIG. 1 is a block diagram showing the configuration of the device of the first embodiment.
- FIG. 2 is a block diagram showing a configuration of the portable device.
- FIG. 3 is a timing chart showing the ID request signal.
- FIG. 4 is a timing chart showing a response signal from the portable device.
- FIG. 5 is a timing chart showing communication between the vehicle and the portable device.
- FIG. 6 is a flowchart showing the processing on the vehicle side.
- FIG. 7 is a diagram illustrating a situation where two vehicles are adjacent to each other.
- FIG. 8 is a timing chart showing communication between two vehicles and one portable device.
- FIG. 9 is a timing chart showing an example of changing the transmission cycle of the ID request signal.
- FIG. 10 is a timing chart showing another example of changing the transmission cycle of the ID request signal.
- FIG. 11 is a timing chart showing an example of transmitting an ID request signal to a plurality of portable devices.
- FIG. 12 is a timing chart showing another example of transmitting an ID request signal to a plurality of portable devices.
- FIG. 13 is a timing chart showing still another example of transmitting an ID request signal to a plurality of portable devices.
- FIG. 14 is a timing chart showing still another example of transmitting an ID request signal to a plurality of portable devices.
- FIG. 15 is an evening chart showing still another example of transmitting an ID request signal to a plurality of portable devices.
- FIG. 16 is a timing chart showing a communication operation in the second embodiment.
- FIG. 17 is a diagram showing the format of the response code.
- FIG. 18 is a flowchart showing a process for entering the anti-theft mode.
- FIG. 19 is a diagram illustrating a communication area.
- FIG. 20 is a diagram showing a display of an unauthorized attack.
- FIG. 21 is a flowchart showing a process for entering the anti-theft mode.
- FIG. 1 is a block diagram showing the overall configuration of the first embodiment.
- the first transmitting antenna 10 is built in, for example, a door handle provided outside a door of a driver's seat (D seat).
- the first transmitting antenna 10 transmits the ID request signal to the outside of the vehicle by a radio wave having relatively high directivity, for example, a radio wave of 2.45 GHz.
- the first transmission unit 12 performs a process for transmitting the ID request signal from the first transmission antenna 10.
- the second transmitting antenna 14 is provided near the instrument panel inside the vehicle, and transmits an ID request signal toward the inside of the vehicle by, for example, a 2.45 GHz radio wave.
- the second transmitting unit 16 performs a process for transmitting the ID request signal from the second transmitting antenna 14. Note that the first transmission unit 12 and the second transmission unit 16 can be shared by one circuit.
- the receiving antenna 18 is provided in the vehicle interior (for example, near the rearview mirror), and receives a signal transmitted from the portable device.
- the signal from the portable device is, for example, a 300 MHz signal and is a response including an ID to the ID request signal.
- the receiving unit 20 processes a signal received by the receiving antenna 18.
- the first transmitting unit 12, the second transmitting unit 16 and the receiving unit 20 are connected to the ECU 22 and I have.
- the ECU 22 controls the first transmitting unit 12, the second transmitting unit 16, and the receiving unit 20, and performs various other processes.
- the ECU 22 is connected to a door handle operation detection unit 24 and a force detection switch 26.
- This door handle is a handle for opening the D seat door from outside.
- the door handle handle detection unit 24 detects that the door handle of the D seat has been operated.
- the power switch 26 is a switch that is turned on and off when the door is opened and closed. In this case, it indicates the opening and closing of the D seat door. Therefore, the ECU 22 can recognize the operation of the door handle of the D seat door and the opening / closing of the D seat door.
- a memory 28 is connected to the ECU 22.
- This memory 28 stores the data of the ID of the portable device. Therefore, the ECU 22 reads the ID (stored ID) stored in the memory 28 in advance, and compares the read ID with the ID (received ID) received from the portable device to perform ID comparison.
- the memory 28 is preferably a non-volatile memory. For example, if the EEPROM 28 is a cEE PROM, the contents of the memory 28 can be rewritten when necessary. It is also preferable that the ID for door lock / unlock and the ID for releasing the immobilizer / steering lock are stored in the memory 28 as different items.
- a door lock 30, an immobilizer 32, and a steering lock 34 are also connected to the ECU 22.
- the door lock 30 controls the locking and unlocking of the door, and drives the lock mechanism by driving the motor and the like to lock and unlock the door. It is preferable to be able to control the locking and unlocking of all seat doors and individual doors in addition to the lock and unlock of only the D seat door.
- the door lock 30 is controlled according to a response of the portable device to an ID request from the first transmitting antenna 10.
- the immobilizer 32 controls permission / prohibition of starting the engine. Allows the engine to start when it is confirmed that a legitimate portable device is possessed by exchanging the ID with the portable device.
- the steering lock 34 locks the steering wheel, and locks when a legitimate portable device is recognized, like the immobilizer 32. Is released.
- the immobilizer 32 and the steering lock 34 are controlled in accordance with the response of the portable device to the ID request from the second transmission antenna 14.
- FIG. 2 shows the configuration of the portable device.
- the receiving antenna 40 receives the 2.45 GHz radio wave (ID request signal) transmitted from the first and second transmitting antennas 10 and 14 on the vehicle side.
- the reception unit 42 is connected to the reception antenna 40, and performs reception processing of a signal received by the reception antenna 40.
- the ECU 44 is connected to the receiving unit 42, and performs various processes including a signal supplied from the receiving unit 42.
- a memory 46 is connected to the ECU 44, and the memory 46 stores data on ID. For example, two types of IDs for unlocking the door and unlocking the immobilizer and steering lock are stored.
- the memory 46 is formed of, for example, a ROM, but may be formed of an EEPROM or the like and made rewritable.
- a transmission antenna 50 is connected to the ECU 44 via a transmission unit 48, and modulates a predetermined carrier with ID data and transmits the modulated carrier.
- the carrier frequency is, for example, 30 OMHz, and is received by the receiving antenna 18 on the vehicle side.
- an operation unit 52 is connected to the ECU 44. By operating the operation unit 52, the ID can be transmitted even when the ID request signal is not received.
- the vehicle-side device when the door is locked with the engine turned off and the user leaves the vehicle, the vehicle-side device issues an ID request signal at a predetermined time interval. Is transmitted from the first transmitting antenna 10.
- the ID request signal is repeatedly transmitted at 200 ms ec intervals.
- the ID request signal may be a signal that simply maintains the state of “1”.
- the ID request signal according to the present embodiment is a code representing the ID of the ID request signal itself. It consists of an ID request bit, which is a trigger signal, and a response trigger request that keeps the state of “1” following this ID request bit.
- the ID request bit consists of a plurality of bits, and the ID request signal can be used to identify the ID request signal.
- Each mobile device is assigned an ID request bit for itself, and the ID request bit for the self is addressed to the mobile device. Returns a response only to the request signal.
- the response trigger request is a signal indicating that a response from the portable device is being accepted. Therefore, if no response is received within the predetermined time, it is returned to “0”. When a response is received, the status of “1” is maintained while ID comparison is performed.
- the broken line shows an example when the ID verification has failed, and the solid line shows an example when the ID verification has succeeded.
- a predetermined start bit can be added before or after the ID request bit.
- the portable device may store the data on the ID request bit addressed to itself in the memory 46.
- Figure 5 shows a timing chart when the portable device approaches and enters the reception range.
- the ECU 44 reads out its own ID from the memory 46 and transmits this to the transmitting antenna. Transmit as a response from 50.
- This response consists of a start bit and an ID bit, as shown in Figure 4.
- the status bit is simply for notifying that the ID bit is transmitted, and the ID bit is a date based on the information on the ID stored in the portable device.
- the response from the portable device is received by the receiving antenna 18 on the vehicle side. Illustrated example Then, the portable device returns a response to the second ID request signal. As a result, the vehicle continues to transmit the response trigger request.
- the ECU 22 collates the received ID with the ID read from the memory 28 by the ECU 22.
- the response trigger request remains at "1" while the response ID is being matched. If the collation is successful (the ID matches), the response trigger is reset to “0” at that point. If the ID verification fails (ID does not match), the response trigger returns to “0” at that point. Matching of this ID was successful
- the ECU 22 controls the door lock 30 to release the door lock 30.
- the comparison between the received ID and the stored ID on the vehicle side is performed sequentially for each received bit. That is, the portable device receives the ID request bit, and returns a response when it can recognize that the ID request signal is addressed to itself. Therefore, the timing of receiving the response is known on the vehicle side, and the signal from the portable device can be taken in from the start bit. Therefore, ID comparison can be performed sequentially from the first bit.
- the vehicle side performs the synchronization with respect to the received data overnight, but it is also preferable to synchronize in bit units based on the received start bit. Further, the portable device side may transmit synchronously based on the ID request bit.
- the response trigger request is returned to “0” at that point as shown by the broken line in FIG.
- the portable device stops transmitting the ID bit at that point as shown by the broken line in FIG.
- N is greater than or equal to Nmax, which is the maximum number of bits of the ID (S19). If the maximum value has not been reached in this determination, the process returns to S16 and repeats ID matching for each bit. On the other hand, if YES in S19, the IDs are all the same, and the contents of the remote operation such as unlocking of the door are executed (S20).
- the sleep mode of the ID request is provided in S23. Therefore, even when the ID request signals from the two vehicles interfere with each other, the ID can be verified.
- portable device B for vehicle B exists at a position where ID request signals from both vehicles A and B as shown in Fig. 7 can be received. Respond to the ID request signal from both parties (assuming that the relatively simple request ID matches). If the transmission timing of the ID request signal from both vehicles A and B is such that the ID request signal from vehicle A reaches portable device B first, as shown in FIG. Respond to the ID request signal from vehicle A. Therefore, when vehicle B attempts to detect a response from portable device B, portable device B is responding to vehicle A, and vehicle B cannot detect the start bit. On the other hand, in the vehicle A, the response from the portable device B fails to match because of the ID difference.
- the ID request signals of vehicles A and B are always repeated and transmitted at the same evening, and the portable device returns a response to vehicle A at the same timing. Therefore, in vehicle B, collation of ID from portable device B is not performed, and remote operation is not performed in vehicle B.
- a pause period is provided in the vehicle A that has failed in the ID verification after detecting the start bit, and the transmission of the ID request signal is controlled in the suppression direction. Therefore, during this suspension period, the ID request signal from the vehicle B is transmitted, and the portable device B responds to the ID request signal. As a result, ID verification of the vehicle B is successful, and remote control such as release of the door opening is performed.
- step S12 the process returns to step S12 to transmit the ID request signal in S12 after detecting the passage of 200 ms. That is, although the response to the first ID request signal is received in the vehicle B, when the start bit cannot be detected, the vehicle B receives the response in the middle of the response. In such a case, it is determined that communication has not been started normally, and no pause is performed, and an ID request signal is transmitted at a timing after the lapse of 20 ms. Accordingly, at the next timing, the vehicle B can receive the response from the portable device B, and can perform the ID verification.
- the sleep mode is entered only for two or more consecutive errors. This is because an error may occur due to a communication error due to burst noise, even though a legitimate ID is originally received. In other words, in a single determination, the sleep mode is entered in such a case, so that a response delay is likely to occur. However, the ID after the start bit is detected By entering the sleep mode for the first time due to the occurrence of two errors in the collation, it is possible to prevent the communication mode from entering the sleep mode. Further, in the above example, the pause period of the ID request signal transmitted intermittently is lengthened to eliminate the inoperability due to radio wave interference.
- transmission of the request signal may be suppressed by lowering the transmission level of the ID request signal. If the transmission level is lowered, the ID request signal may not reach the portable device or may not reach it at all. This allows another ID request signal to be received by the portable device.
- a door handle handle operation detecting section 24 is provided. Therefore, when an operation is detected by the door handle operation detecting section 24, the ECU 22 controls the first transmitting section 12 to perform the following processing.
- the door handle handle operation detecting section 24 may detect that the door handle has been actually operated, or may detect that the door has been touched or approached.
- the transmission cycle of the ID request signal from the vehicle is fixed, but the transmission cycle is changed in a predetermined manner to prevent the interference of the ID request signal from the two vehicles. Can also.
- multiple slots for assigning ID request signals In this case, prepare A, B, C, and D). Then, the slot for transmitting the ID request signal is changed. As a result, the timing at which the ID request signal is transmitted is randomly changed.
- the ID request signal is generated, for example, every 20 Oms e, and it is assumed that 5 ms e c is required to transmit one ID request signal.
- the ID request signal is generated, for example, every 20 Oms e, and it is assumed that 5 ms e c is required to transmit one ID request signal.
- four slots A, B, C, and D are prepared for the ID request generation period, for a total of 20 ms ec. Then, one of the slots is randomly selected and an ID request signal is transmitted.
- the probability that the next ID request will occur will be 1/4. Therefore, the probability that the timing will match again and again will be very low. If the number of slots is N, the probability of matching at the next timing is 1 / N each time.
- FIG. 10 shows an example in which the measurement start timing of the cycle itself is further changed. That is, when transmission of the ID request signal starts, measurement of the transmission cycle 200 ms e c starts, and when 200 ms e c has elapsed, slot A is allocated.
- the slot D is selected after the slot B is selected, so that the interval between the slots A is 205 msec. Since slot A is selected after slot D, the interval between slots A is 215 ms e. In this way, by sequentially changing the position of slot A, the probability of collision can be further reduced.
- a plurality of transmission periods are prepared, and one of the transmission periods is assigned to the vehicle. If N types of transmission periods are prepared and the transmission periods are sequentially assigned to each vehicle, the probability that the transmission periods of adjacent vehicles match will be reduced to 1 / N. Therefore, the probability that both the ID request bit and this transmission period match is much lower
- a is assigned to the second slot and b is assigned to the third slot.
- b is assigned to the second slot, and so on.
- the ID request bits a and b must always be assigned to different slots.
- the ID request signals a and b were simply sent alternately.
- the vehicle-side device can have a learning function and can send frequently used ID request signals more frequently.
- the ratio of the ID request signal a and b 2: c Yotsute to be set to 1, depending on a usage pattern of the user thus, it is possible to perform more suitable transmission control of the ID request signal.
- the portable device b is provided with an operation unit 52 such as an unlock button. Therefore, by operating the operation unit 52, a command is transmitted from the portable device b, and the vehicle-side device unlocks or the like in response to the command. When such an operation is performed (an event occurs), the transmission of the ID request signal b is resumed thereafter. This makes it possible to control the transmission of the ID request signal appropriately in accordance with the usage pattern of the user.o
- the target that can be operated by the portable device can be changed.
- the second transmitting antenna 14 is provided in the vehicle cabin, thereby controlling permission / inhibition of engine start.
- the door can be unlocked and unlocked on both portable devices a and b, but the engine can be started only on portable device a and not on portable device b. be able to.
- the ID request signal from the first transmitting antenna 10 sends a and b alternately, but the ID request signal from the second transmitting antenna 14 is only a. .
- the engine start permission can be obtained only by the portable device a. It is preferable that the engine start permission is not obtained even by operating the button of the portable device b.
- the control of the door lock and the engine start has been described.
- the same distinction can be made for the control of other devices.
- the portable device such as a portable device a that can perform all operations of the vehicle and a portable device b that cannot open the trunk.
- Such a setting may be recorded in the memory 46. This recording may be performed by a special device, or may be performed only after a predetermined password is input in the vehicle-mounted device. Good.
- the present invention by controlling the transmission of the ID request signal, it is possible to appropriately cope with a communication failure due to radio wave interference.
- the configuration of the device of the second embodiment is basically the same as the device of the first embodiment described above.
- the second embodiment relates to defense against an unauthorized attacker who attempts to perform a remote operation by an unauthorized communication.
- an ID request signal (12 bits) is transmitted from the first transmitting antenna 10 and the receiving unit 20 is turned on at that time. When there is no response, the receiving unit 20 is turned off. If there is no response, repeat this every 300 ms. Note that the ID request signal from the first transmitting antenna is a force pick-up for identifying the vehicle, and only the portable device of the force number responds.
- the portable device If the portable device is within a range where radio waves from the first transmitting antenna 10 can be received, the portable device returns a response.
- This response means that there was a response such as a burst signal May be transmitted to the vehicle.
- an internally generated challenge code 32 bits is transmitted.
- This challenge code is a random number generated by a random number generator, and a different code is used each time.
- the portable device When receiving the challenge code, the portable device performs a predetermined function calculation based on the challenge code and generates a function calculation bit. Then, a response code including this function calculation bit is created and returned.
- This response code has the format shown in Fig. 17 and includes a start bit (10 bits), a fixed ID code (32 bits), and a function calculation bit (32 bits). ), A status bit (5 bits), and a knowledge bit (5 bits).
- the start bit indicates the start of this response code.
- the fixed ID code is a code that identifies a portable device. The power number from the vehicle side specifies the vehicle. If there are multiple portable devices for one vehicle, any of them will respond. The portable device is specified by the fixed ID.
- the function calculation bits are ciphers generated in a certain manner based on the received challenge code as described above.
- the status bit indicates whether the signal is a signal from the smart entry or a lock / unlock signal by pressing a button of the portable device.
- the parity bit is used to check whether the Lesbos code has any errors.
- the vehicle determines that the correct portable device is approaching and releases the door lock.
- the ID request signal is sent periodically and it is easy to intercept it. C. Then, by finding the user who has the portable device and sending the ID request signal to this user, The response of the portable device can be intercepted.
- the vehicle On the other hand, if the response of the portable device is returned to the vehicle, the vehicle generates a challenge code, which can be intercepted.
- the challenge code is a random number and is indefinite.
- the car sends an appropriate challenge code to the user's mobile device, If so, the mobile device returns a response. Therefore, by receiving the response code, the contents of the data portion that does not change, such as the start bit and fixed code, can be grasped.
- a function bit is generated for a challenge code that is a random number, and it is difficult to decipher this function.
- the door lock when entering the anti-theft mode, the door lock is not released even if the correct response code is returned thereafter. Therefore, it is possible to reliably prevent the door lock from being released by the attacker.
- the number of times to enter the anti-theft mode was 10 times for 10 minutes. This means that if a legitimate user is in the communication area, communication errors may occur. Because it is possible.
- the ID request signal from the vehicle can communicate with the portable device, if the area where the portable device can uplink to the vehicle is wide, or if a downlink code communication error occurs Cannot receive the challenge code correctly. Therefore, the code returned by the portable unit matches the fixed ID, and an error occurs in the function calculation code. Therefore, although it is a rare case, it may be possible to enter the anti-theft mode in spite of the correct portable device. Therefore, when an error occurs more than 10 times in 10 minutes, the anti-theft mode is set to prevent the device from entering the anti-theft mode easily.
- the transmission of the ID request signal can be stopped in the same manner as the sleep mode when parking for a long time.
- the following conditions are suitable as the return conditions when the anti-theft mode is entered.
- the wireless code is a signal generated by operating a button of the portable device.
- the basic configuration of this wireless code is the same as the response code shown in FIG.
- a rolling code is inserted in the function calculation bit, and identification data, which is a wireless code, is inserted in the status part.
- the mouth ring code is a code that changes a predetermined value each time the button is pressed, and for example, a change based on a predetermined function is performed on the previous value.
- the vehicle has the previously received rolling code, and if the rolling code received this time is a mouth ring code generated by pressing the button a certain number of times after the previous rolling code, Use a regular mouth ring code. Note that this The function calculation itself can use the same calculation as the function calculation performed on the challenge code.
- a switch or the like may be provided on the door handle to detect that the door handle has been actually operated, and to return from the anti-theft mode at this time.
- the switch may be a mechanical switch, but in a vehicle with a door closer, etc., a switch that can electrically detect that the door has been pulled (PULL) may be used.
- the system has entered anti-theft mode, it is also appropriate to inform the user about this. That is, if the user enters the anti-theft mode and then returns under the above-described return conditions, the user does not know that the user has entered the theft mode. Therefore, it is preferable to notify the user of this by display or by sound. As a result, the user can know the fact that the vehicle was aimed at, and can recognize that the location of the parking lot and time are dangerous.
- this display it is preferable to display the information on the multi-information section in the message indicator section as shown in FIG.
- the attacker transmits a simulated response code in response to an ID request signal generated on the vehicle side.
- an attacker may generate and send a mock wireless code.
- the received data it is considered that the fixed ID is the same but the mouth ring code is different.
- the anti-theft mode when such a situation occurs, for example, 10 times or more in 10 minutes.
- the contents of the anti-theft mode are the same as those described above.
- the in-vehicle device remote control device is mounted on a vehicle and is used as a device for releasing a vehicle door lock by communicating with a portable device carried by a user.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000540028A JP3489564B2 (ja) | 1998-01-14 | 1999-01-14 | 車載機器遠隔制御装置 |
DE1999619128 DE69919128T2 (de) | 1998-01-14 | 1999-01-14 | Im fahrzeug installierte fernsteuerung |
US09/600,307 US6700476B1 (en) | 1998-01-14 | 1999-01-14 | On-Vehicle remote controller |
EP99900311A EP1046558B1 (en) | 1998-01-14 | 1999-01-14 | On-vehicle remote controller |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP569698 | 1998-01-14 | ||
JP10/5696 | 1998-01-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999036296A1 true WO1999036296A1 (fr) | 1999-07-22 |
Family
ID=11618275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/000101 WO1999036296A1 (fr) | 1998-01-14 | 1999-01-14 | Commande a distance situee dans un vehicule |
Country Status (5)
Country | Link |
---|---|
US (1) | US6700476B1 (ja) |
EP (1) | EP1046558B1 (ja) |
JP (1) | JP3489564B2 (ja) |
DE (1) | DE69919128T2 (ja) |
WO (1) | WO1999036296A1 (ja) |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2821809A1 (fr) | 2001-03-09 | 2002-09-13 | Bressane De Travaux Electr Bte | Systeme d'alarme pour vehicule automobile |
JP2003308120A (ja) * | 2002-02-14 | 2003-10-31 | ▲吉▼川 英之 | 遠隔操縦装置 |
JP4532820B2 (ja) * | 2002-02-14 | 2010-08-25 | ▲吉▼川 英之 | 遠隔操縦装置 |
KR102056105B1 (ko) * | 2013-08-16 | 2019-12-16 | 현대모비스 주식회사 | 전류 소모 방지 기능을 갖는 트렁크 자동 열림 제어 장치 및 그 동작 방법 |
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JP2020074627A (ja) * | 2016-02-24 | 2020-05-14 | 株式会社東海理化電機製作所 | 無線通信システム |
JP2020061625A (ja) * | 2018-10-09 | 2020-04-16 | 株式会社東海理化電機製作所 | 不正通信防止システム及び不正通信防止方法 |
Also Published As
Publication number | Publication date |
---|---|
DE69919128T2 (de) | 2005-01-20 |
DE69919128D1 (de) | 2004-09-09 |
EP1046558A4 (en) | 2003-04-23 |
EP1046558B1 (en) | 2004-08-04 |
EP1046558A1 (en) | 2000-10-25 |
US6700476B1 (en) | 2004-03-02 |
JP3489564B2 (ja) | 2004-01-19 |
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