JPH10138874A - Security device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it impossible to unlock a door lock by providing a valid/ invalid setting means to set valid/invalid of an ID code without eliminating the ID code memorized in an ID code memory means from the ID code memory means. SOLUTION: It is possible to reuse an ID code of a remote controller without changing it by changing an inable bit of the ID code of the remote controller R which is discovered to '1', and even when an outside discovers the lost remote controller and tries to use the remote controller, as the inable bit of the ID code of the lost remote controller R is already changed to '0' at the time, it is impossible for the outsider to inlock a door lock. A valid/invalid setting means to set valid/invalid of the ID code without eliminating the ID code memorized in a memory part 14 as an ID code memory means from the ID memory means is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a remote controller, which transmits an ID code of the remote controller and a signal indicating a predetermined instruction to the security apparatus main body, thereby transmitting the predetermined instruction to the security apparatus main body. A security device to be executed.

[0002]

2. Description of the Related Art A keyless entry device in a conventional security device realizes keyless entry by wirelessly communicating an ID code between a security device main body provided on an automobile and a portable remote controller. The remote controller is provided with a unique ID code in advance and the ID code is stored in the security device body in advance.

When the door lock is unlocked by actually using the keyless entry device, the user presses a door lock unlock button provided on the remote controller. I
The D code is transmitted from the remote controller, and the security device body receives the door unlock signal and the ID code. If it is determined that the received ID code is the same as the ID code stored in advance, the door lock is unlocked according to the door lock unlock signal. The same applies to the case where the door lock is locked. When the ID code received by the security device body is determined to be the same as the ID code stored in advance, the door lock is locked.

In the above-mentioned conventional example, if the remote controller is lost, if the ID code of the lost remote controller is stored in the security device body forever, if the lost remote controller is misused, the vehicle There is a problem that the door lock is unlocked.

[0005] In order to solve this problem, conventionally, after recognizing that a remote controller has been lost, an apparatus which erases an ID code assigned to the lost remote controller from storage in a security device body. Has been proposed. Then, in the proposed device, a new ID is assigned to the new remote controller.
A code is given, the new ID code is stored in the security device main body, and keyless entry is realized through the new ID code.

[0006]

However, according to the above proposed device, the ID code assigned to the lost remote controller is deleted from the storage of the security device body, and a new ID is assigned to the new remote controller. Therefore, when a lost remote controller is found, the old ID code assigned to the found remote controller cannot be used.

[0007] Therefore, according to the proposed device, when a lost remote controller is found, it is necessary to re-register the ID code assigned to the found remote controller. There is a problem that the operation is complicated. Further, since the ID code re-registration work is complicated, there is a problem that the found remote controller is not actually used.

According to the present invention, when a remote controller in a keyless entry device is lost and subsequently found, the ID code of the remote controller can be reused without re-registering, and the lost remote controller is found by another person. It is another object of the present invention to provide a security device that cannot unlock a door lock even if another person attempts to use a remote controller.

[0009]

According to the present invention, an ID code of the remote controller and a signal indicating a predetermined instruction are transmitted from a remote controller to a security device main body, whereby the predetermined instruction is transmitted to the security device. In the security device to be executed by the main unit,
ID for storing the ID code of the remote controller
A code storage unit; and a valid / invalid setting unit that sets validity / invalidity of the ID code without deleting the ID code stored in the ID code storage unit from the ID storage unit. This is a device included in the device main body.

[0010]

FIG. 1 is a diagram showing a security device SS1 according to an embodiment of the present invention.

The security apparatus SS1 executes the predetermined instruction to the security apparatus main body 11 by transmitting an ID code of the remote controller R and a signal indicating a predetermined instruction from the remote controller R to the security apparatus main body 11. Security device.

The security device SS1 includes a security device main body 10 mounted on a vehicle, a remote controller R for performing bidirectional communication with the security device main body 10 by radio waves, light or sound waves, a starter cut relay 21, Siren drive unit 22, headlight drive unit 23, door sensor 24, bonnet sensor 25, radar sensor 26, impact sensor 27
, A glass break sensor 28, a power supply 31, an ignition switch 32, a valley switch 33, and a door lock unit 34.

The remote controller R has a security function on button, a security function off button, buttons for locking (unlocking) and unlocking (unlocking) the doors of the vehicle, and the like (not shown). Also, remote controller R
Has a display unit Ra capable of displaying alphanumeric characters and time for eight characters, a clock Rb, and a counter Rc for counting the number of times the security function on button or the security function off button is pressed.

The security device body 10 includes a control unit 11 composed of a microcomputer, a transmission / reception unit 12 for transmitting and receiving signals to and from the remote controller R, an operation unit 13, a memory unit 14, a clock unit 1
And 5.

The operation unit 13 is provided with various operation switches for operating the car security device.

The memory unit 14 has a ROM storing a program of a flowchart shown in FIG. 2 and a program for realizing functions required as a car security device;
A RAM for storing various data and an EEPROM (Electrically Erasable Program) for registering an ID (Identity) code of the remote controller R and its enable bit.
able ROM).

The clock section 15 is a clock built in the security device main body 10.

The security device body 10 has a vehicle-mounted power supply 31, an ignition switch 32, and a valley (Val).
et) The switch 33 and the door lock unit 34 are connected. The security device body 10 can detect the states of the ignition switch 32 and the valley switch 33. The valley switch 33
Is a switch that is installed in the lower inconspicuous place of the dashboard and is used when the security function is released without the remote controller R. The door lock unit 34 is a device that executes locking and unlocking of the door lock by a signal from the remote controller R.

The starter cut relay 21 prevents the engine starter from rotating when the security device body 10 detects an abnormality. The siren drive unit 22 sounds a siren when the control unit 11 detects an abnormality, and notifies the surroundings of the occurrence of the abnormality. The headlight driving unit 23 blinks the headlight when the control unit 11 detects an abnormality, and notifies the surroundings of the occurrence of the abnormality.

The door sensor 24 is a sensor for detecting opening and closing of the door, and the hood sensor 25 is a sensor for detecting opening and closing of the hood. These sensors 24, 2
Reference numeral 5 denotes an on-off switch, which detects whether the door or the hood is open or closed by turning the switch on or off.

The radar sensor 26 is a sensor for detecting the movement of a vehicle or an object (such as a person) approaching the vehicle by radar waves. The impact sensor 27 is a sensor that detects an impact applied to the vehicle, and the glass break sensor 28 is a sensor that detects the impact applied to the glass by sound. These sensors 26, 27, 28 are sensors that require sensitivity adjustment, and the sensitivity adjustment units 26a, 27a,
8a, it is connected to the control unit 11.

When the security device SS1 presses the security function on button of the remote controller R after the user has pulled out the ignition key and got off the vehicle, the security device main body 10 starts monitoring the state of each sensor, and detects an abnormality. When it is detected, it drives the siren drive unit 22 and the headlight drive unit 23 to notify the surroundings of the occurrence of an abnormality. .

Next, the operation of the above embodiment will be described.

FIG. 2 is a flow chart showing the operation of the above-described embodiment. In particular, FIG. 2 is a diagram showing the operation of setting the ID code of the remote controller R to enable / disable.

First, the operation when starting to use the first remote controller R1 having the same function as the remote controller R will be described.

When the car door is open (S
1) Using the first remote controller R1,
When the key-off switch is turned on / off six times within 10 seconds (S2), the ID code enable mode is set (S2).
3). At this time, the ID is sent from the remote controller R1.
If the lock code is received (S4) and the lock button is not pressed within a predetermined time (S21), the ID code received from the remote controller R1 is replaced with the number of the remote controller R1 (in this case, the first unit). Since it is the remote controller R1, the number of the remote controller R is No. 1) and is stored in the EEPROM (S5). Then, the enable bit corresponding to the received ID code is set to "1" (S6). Thus, the ID code of the first remote controller R1 and its number No. Is stored in the EEPROM, and the enable bit corresponding to the ID code of the first remote controller R1 is set to "1". Thereafter, the security is performed using the first remote controller R1. The apparatus main body 10 can be remotely controlled.

If the door remains open (S
7) Repeat the above operation (steps S4 to S6), store the ID codes and remote controller numbers of the other remote controllers R in the EEPROM, and set the enable bits corresponding to those ID codes to "1". Is done. For simplicity of explanation, it is assumed that only the first remote controller R can be used. Thereafter, the remote controller R remotely controls the security device body 10.

Next, the first remote controller R1
The operation in the case where the device is lost will be described.

In this case, a second remote controller R2 having the same function as the first remote controller R1 but having a different ID code is obtained, and the first remote controller R2 is used by using the second remote controller R2. "0" in the enable bit of the ID code of the remote controller R1
, Thereby disabling the first remote controller R1 and disabling the second remote controller R1.
The enable bit of the ID code of the second remote controller R2 is set to “1”.
Enable

That is, when the door of the automobile is open, the second remote controller R
Without turning on / off the key-off SW 6 times (S
(1, S2) If the bullet switch is turned on / off three times within two seconds (S11), the ID code invalidation mode is set (S12). Then, if the transmission button is turned on within a predetermined time by using the second remote controller R2 (S
13), the enable bit of the ID code in the remote controller R of the number corresponding to the number of times the transmission button is turned on is set to “0” (S14). Here, since it is desired to prevent the first remote controller R1 from being abused by others, the first remote controller R1 should be invalidated. In step S13, the transmission button is pressed within a predetermined time. Turn on once.

In this case, the bullet SW is set within two seconds.
Is turned on briefly (S15), the process returns to step S13,
Steps S13 and S14 are repeated to invalidate the other remote controllers R. To simplify the explanation, the first remote controller R1
I will only disable it.

After setting the enable bit of the ID code in the remote controller R of the number corresponding to the number of times the transmission button is turned on to “0”, the bullet SW is set within two seconds.
Is not turned on for a short time (S15).
If W is turned on three times (S16), the ID code invalidation mode is canceled (S17).

Next, the second remote controller R2
In the case where the first remote controller R1 is found during use of and the user wants to use the first remote controller R1, an operation of activating the first remote controller R1 will be described. .

First, when the car door is open,
When the key-off SW is turned on / off six times within 10 seconds using the second remote controller R2 (S1,
S2) The ID code validation mode is set (S3).
At this time, the ID code is received from the remote controller R2 (S4), and after that, when the lock button provided on the remote controller R2 is pressed within a predetermined time (S21), the number of times the lock button is pressed is Is set to "1" in the ID code of the remote controller R corresponding to "1" (S22).

Here, since it is desired to activate the first remote controller R1, in step S21,
Press the lock button only once. With this configuration, since the first remote controller R1 that has been lost and thus invalidated has been activated, the security device body 10 is remotely controlled via the first remote controller R1. Will be able to do it. And in this case,
ID of the first remote controller R1
The first remote controller R1 can be validated without a complicated operation of re-registering the code in the EEPROM.

In the above embodiment, if the remote controller in the keyless entry device is lost and subsequently discovered, the discovered remote controller R is used to validate the ID code already stored.
It is sufficient to simply change the enable bit of the ID code of the remote controller to "1", so that the remote controller can be reused without changing the ID code of the remote controller. At this time, since the enable bit of the ID code of the lost (already found) remote controller R has already been changed to "0", some people unlock the door lock. Can not do.

In the above embodiment, the ID code stored in the memory unit 14 as the ID code storage means is replaced with the ID code.
There is provided valid / invalid setting means for setting valid / invalid of the ID code without erasing the ID code from the storage means.

The control section 11 is an example of ID code invalidation mode setting means for invalidating an ID code without deleting the ID code stored in the ID code storage means from the ID storage means. It is also an example of an ID code activation mode setting unit that activates an invalidated ID code.

FIG. 3 is a diagram showing a relationship between an ID code and an enable bit in the above embodiment.

In FIG. 3, when the remote controller R1 of the ID code # 1 is lost, the ID code # 1 is lost.
Is changed from "1" to "0". By doing so, even if another person picks up the remote controller R1 with the ID code # 1, the remote controller R1 cannot be misused because the remote controller R1 is invalidated. Thereafter, when the authorized owner finds the remote controller R1, the remote controller R1 can be used only by changing the enable bit corresponding to the remote controller R1 from “0” to “1”.

[0041]

According to the present invention, when a remote controller R in a keyless entry device is lost and subsequently found, the ID code of the remote controller R can be reused without re-registering the remote controller R. Even if another person discovers the remote controller R and tries to use the remote controller R, the door lock cannot be unlocked.

[Brief description of the drawings]

FIG. 1 shows a security device SS according to an embodiment of the present invention.
FIG.

FIG. 2 is a flowchart showing an operation of the embodiment, and particularly shows an operation of setting enable / disable for an ID code of a remote controller R;

FIG. 3 is a diagram illustrating a relationship between an ID code and an enable bit in the embodiment.

[Explanation of symbols]

 SS1: security device, R: remote controller, 10: security device body, 11: control unit, 14: memory unit.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G08B 25/04 G08B 25/04 G

Claims (2)

[Claims] 1. By transmitting an ID code of the remote controller and a signal indicating a predetermined instruction from the remote controller to the security device main body,
In the security device for causing the security device main body to execute the predetermined instruction, the security device main body may store an ID code of the remote controller.
Code storage means, and valid / invalid setting means for setting validity / invalidity of the ID code without erasing the ID code stored in the ID code storage means from the ID storage means. A security device characterized by the above-mentioned. 2. By transmitting an ID code of the remote controller and a signal indicating a predetermined instruction from the remote controller to the security device main body,
In the security device for causing the security device main body to execute the predetermined instruction, the security device main body may store an ID code of the remote controller.
Code storage means; ID code invalidation mode setting means for invalidating the ID code without deleting the ID code stored in the ID code storage means from the ID storage means; ID code activation mode setting means for validating the set ID code.