JPH01295976A - Keyless unlocker - Google Patents

Abstract

PURPOSE:To unlock a door immediately after releasing an input prohibitive state by a method in which a given number input during operation of an inhibitor is compared with a prohibition releasing number, and when both the numbers are matched, the prohibiting means is forcibly released by a releasing means provided. CONSTITUTION:A recitation number stored in a memory 1 is compared with a recitation number input by a key operator 2 in a comparator 3. When both the numbers are matched, an unlocker 4 is actuated, and when they are not matched, a prohibitor 5 is actuated, where no comparing action is made. When a given number is input by a key operator 2 during operation of the prohibitor 5, it is compared with a prohibition releasing number stored in a memory 2. When both the numbers are matched, a releasing means 6 is actuated to forcibly release the prohibitor 5 and a comparator 3 is actuated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a keyless unlocking device for unlocking a door of an automobile or the like without using a key.

[Prior art and the problem to be solved by the invention] Conventionally, this type of device allows the door to be unlocked by inputting a pre-registered 4- to 7-digit password using a numeric keypad. There is something.

In this device, if the password does not match a pre-registered password, input using the numeric keypad is prohibited for a predetermined period of time, and the lock cannot be unlocked even if a regular (pre-registered) password is entered.

This predetermined time is set to, for example, 10 minutes or 1 hour, and during this time the lock cannot be unlocked even if the regular password is entered as described above.

Therefore, if an authorized person accidentally enters a PIN number that does not match, or if an unauthorized person enters a PIN number that does not match, even if the authorized person wants to unlock the door immediately, the door will be unlocked. There is a problem with not being able to lock it.

Therefore, the present invention provides a keyless unlocking device that can forcibly cancel the prohibition even if a password that does not match a pre-registered password is input and the input of the password is prohibited for a predetermined period of time. This is the issue.

[Means to solve the problem]

In order to solve the above-mentioned problems, the keyless unlocking device according to the present invention has a keyless unlocking device that is inputted using a predetermined password stored in a storage means 1 and a key operation means 2, as shown in the basic configuration diagram of FIG. The comparing means 3 compares the password with the password entered by the key operating means 2, and when the two passwords match, the unlocking means 4 is activated, and when they do not match, the inhibiting means 5 is activated, regardless of the password from the key operation means 2. In the device in which the comparison operation of the comparison means 3 is not performed for a predetermined period of time, a predetermined prohibition release number is stored in the storage means 1, and the key operation means 2 is operated while the prohibition means 5 is in operation.
The present invention is characterized in that a canceling means 6 is provided which inputs a predetermined number from the computer, compares the number with the prohibition cancellation number in the comparison means 3, and forcibly cancels the prohibition means 5 when both numbers match. do.

[For production]

With the above configuration, the comparison means 3 compares the predetermined password stored in the storage means l with the password input from the key operation means 2, and when the two numbers match, the unlocking means 4 is activated. At least it will be unlocked. Further, if they do not match, the inhibiting means 5 is activated, and even if the password is inputted through the key operation means 2, the comparison means 3 is prevented from comparing the password with the password stored in the storage means 1 for a predetermined period of time.

On the other hand, when the prohibition means 5 is in operation, when a predetermined number is input through the key operation means 2, the comparison means 3 compares it with the prohibition release number stored in advance in the storage means 2, and if both numbers match, the release means 6 to forcefully release the inhibiting means 5. As a result, when a password is entered from the key operation means 2 thereafter, the comparison means 3 compares it with the password stored in the storage means 1, and if they match, the unlocking means 4 is activated.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing an embodiment of the keyless unlocking device according to the present invention. In the figure, 10 indicates when unlocking, for example 4
A key operation section 11 consists of a numeric keypad for inputting a digit PIN number, and 11 is a read-only memory that stores a predetermined 4-digit PIN number and a 4-digit prohibition release number, as well as a control program ( RoM), 12 is ROM
11 is a microprocessor (CPU) that operates according to a control program stored therein; 13 is a buzzer that sounds for a predetermined period of time when the number input using the key operation unit 10 is different from the password; 14 is a key operation unit 1
This is an electric lock that is driven to be unlocked when the numbers input sequentially starting with 0 match all the numbers in the corresponding digits of the password stored in the ROM 11.

The CPU 12 is a timer counter (not shown).

It has registers, etc., and operates as shown in the flow chart of FIG.

That is, the CPU 12 starts operation when the power is turned on.
In the first step S1, the registers R and R' in the CPU 12 are cleared, and then in step S2, when any key of the key operation section 10 that has a key input from the key operation section 10 is operated, the step S2 Judgment is YES
Therefore, the process proceeds to step S3, where the register R is incremented by 1.

Next, the process advances to step S4, where the number entered by the numeric keypad operation is stored in the RAM specified by the contents of register R.
It is stored at position Di in the middle, that is, the position corresponding to the first digit. Next, in step S5, it is determined whether the value of the register R is 4, and if NO (R<4), that is, if the numeric keypad operation is 4 times or less, the process returns to step S2, and the key input by the next numeric keypad operation is performed. wait. Thereafter, steps 82 to S5 are repeated.

If the numeric keypad is operated four times in step S5 and the determination is YES, step 36. Proceed to S7.

Step S6. In S7, the four numbers entered using the numeric keypad and stored in the RAM are compared with the corresponding digits of the password stored in the ROM, and if the two numbers match, the process proceeds to step S8, and electricity is removed from the output boat. Lock 1
After supplying an unlocking signal to 5 and driving the electric lock 15 to unlock,
The error counter C is cleared in step S9 and the process returns to step S1.

If the determination in step S7 is NO1, that is, the two numbers do not match, the process proceeds to step 310, where the error counter C is incremented by one. Next, the process proceeds to step 311, and it is determined whether the content of the counter C is 1, that is, whether the password input using the numeric keypad does not match the password in the ROM for the first time. If this determination is YES, the process proceeds to step 312 to start a timer counter, then in step 313 a buzzer is sounded, and in step S14 it is determined whether one minute has elapsed on the timer counter. If this determination is NO, the process returns to step 313, and if the determination in step S14 is YE.
Steps S13 and 314 are repeated until S(!:), and the buzzer continues to sound for 1 minute. When 1 minute has passed and the determination in step 314 becomes YES, the process returns to step S1.
Clear register R1R'.

When the determination in step 311 is NO, that is, when the count value of the error counter C is 1 or more, the process proceeds to step S15, where it is determined whether or not the error is the second error. If this determination is YES, the process proceeds to step 516, where the timer counter is started, and then the process proceeds to step 317, where the buzzer sounds. Next, the process advances to step 318, and it is determined whether 10 minutes have elapsed by counting the time on the counter. If this determination is NO, the process proceeds to step 319, and it is determined whether or not a number has been input using the numeric keypad of the key operation section 10. If this determination is NO, the process returns to step 317, and if YES, register R' is set to + in step S20.
1, and then the process proceeds to step 321, where the digit D' input by operating the numeric keypad is stored in the position DR' in the RAM indicated by the contents of the register R', that is, the position corresponding to the first digit.

Next, the process proceeds to step S22, where it is determined whether the contents of register R' are 4 or more, that is, whether the numeric keypad has been operated four times and the number corresponding to the 4-digit prohibition release number has been input. . The determination in step S22 is N.
When the answer is O, the process returns to step S19 and waits for the next key input by operating the numeric keypad. Thereafter, steps 319 to S22 are repeated, and numeric keystrokes are performed four times, resulting in step 322.
If the determination is YES, the process advances to step 323.

In step 323, the four numbers entered by operating the numeric keypad and stored in the RAM are compared with the corresponding digit number of the prohibition release number stored in the ROM, and then the process proceeds to step 324 to judge the comparison result. . If this determination is YES, the error counter C is cleared in steps 325 and 326, the buzzer stops sounding, and then the process returns to step S1. Further, when the determination in step 324 is NO, the process returns to the buzzer sounding process in step S17.

If 10 minutes have elapsed in step 318, the process returns to step 311.

If the determination in step S15 is No, that is, if this is the third error, the process proceeds to step S27, where a timer counter is started, and then the process proceeds to step 328.

Step 328 sounds a buzzer, then step 3
The process proceeds to step 29, where it is determined whether one hour has elapsed by counting the time on the counter.

If this determination is No, the process advances to step 330, where it is determined whether a number has been input using the numeric keypad, and the same processes as steps 320 to s26 are performed through steps 831 to 338. If they match, the error counter C is cleared and the buzzer is stopped in steps 337 and 338, and the process returns to step S1.

In addition, if the above numbers do not match or are not input, steps 328 and 329 are repeated until the determination in step S29 becomes YES, and the buzzer continues to sound for one hour. After that, the process returns to step S1 and waits for the next start key input. .

FIG. 4 shows a flowchart according to a second embodiment of the present invention, and its configuration is the same as that of FIG. 2.

That is, the CPU 12 starts its operation when the power is turned on, and waits for a key input from the key operation section 10 in the first step S1. When any key on the key operation unit 10 is operated, the determination in step S1 becomes YES, and the process proceeds to step S2, where the number of digits of the password in the ROMII indicated by the number input here and the value of register D is entered. Compare with. Thereafter, the process proceeds to step S3, where it is determined whether or not the results of the comparison in step S2 match.

If the number entered by the key operation of the key operation unit 10 matches the number of the corresponding digit of the password, step S3
If the determination is YES, the process advances to step S4, where the contents of register D are incremented by 1.

The process then proceeds to step S5, where it is determined whether the contents of register D are 5 or more. The determination in step S5 is to check whether a predetermined number of digits have been input using the key operation unit 10. If the determination is NO, the process returns to step S1 and waits for the next key input.

When the next key input is made and the determination in step S1 is YES, the process proceeds to step S2 described above, where the next digit of the password is compared with the number input this time. If the two match as a result of this comparison, the determination in step S3 is YE.
S, the process advances to step S5 via step S4, and the above-described operation is repeated.

If the same number of digits as the number of digits of the password are input and each number matches the corresponding digit of the password, the determination in step S5 is YES, and the process proceeds to step S7.

In step S7, an unlocking signal is output to the electric lock 14 to drive the electric lock 14 to unlock. This allows the user to open the car door and enter the car.

The above operation is performed when an authorized operator who knows the PIN operates the keys on the key operation unit 10 and inputs the PIN; however, in the case of unauthorized operation by an operator who does not know the PIN, The above case works differently.

That is, when an unauthorized operator operates a key on the key operation unit 10, steps S1 and S2 are executed in the same manner as in the case of an authorized operator; Since it is impossible to input the same number as the eye number, the determination in step S3 is NO.
Proceed to step S8a. In step 8a, the error counter C is incremented by 1, and then the process proceeds to step 8b, where it is determined whether the count value of the error counter C is 3 or more,
If the determination is NO, that is, if it is the first erroneous input, the process advances to step S9, where a timer counter is started.

Thereafter, the process proceeds to step 310, where it is determined whether 10 seconds have elapsed since the timer counter started in step S9. If the determination in step 310 is NO, the process advances to step Sll, where it is determined whether there is a next key input. If there is no key input and the determination in step 311 is NO, the process returns to step SlO. Steps S10 and 31
1 accepts key input for 10 seconds, and if there is a key input during this time and the determination in step Sll is YES, the process advances to step S12, where 1 is set in register D, and the process returns to step S5. Note that if there is no key input within 10 seconds, the determination in step SIO becomes YES, and the process proceeds to step S13, which will be described later.

In other words, the first key input was incorrect, and then 10
If there is a key input within seconds, the process returns to step S2 via step S12, the first digit of the password is again compared with the key input number, and the result is determined in step S3. If the second key input also does not match, step S
The process proceeds to step 8b via step 8a, where it is determined whether or not the erroneous input has been made twice or more. Since this is the second erroneous input, the determination in step S8 is NO, and the process returns to step S.
Go to step 9 and repeat the above operation.

If there is a third key input within 10 seconds from the previous key input, the process returns to step S2, where the number of the third key input and the first digit of the password are compared again. 3
If the second key input matches the password, the determination in step S3 is YES, and steps S4 and 35
The process returns to step S1 and waits for the next fourth key input.

There is a fourth key input, and the judgment in step Sl is YES.
If so, the process advances to step S2, where the key-input number is compared with the second digit of the password. The result of this comparison is determined in the next step S3, but generally they do not match due to key operations by an unauthorized operator, so the determination in step S3 is NO, and the process proceeds to step S8b via step S8a. Due to this fourth key input, the mismatch occurs for the third time, and the determination in step S8 becomes YES, and the process proceeds to step S313.

In step S13, a timer counter is started, and in the next step 314, it is determined whether or not one hour has passed since the timer counter started in step 313.

If this determination is NO, the process advances to step S17, and it is determined whether a number has been input by operating the numeric keypad. As a result of this determination, if no number has been input, the process advances to step 315. If it has been input, the process advances to step 318 to clear the register R', and in step S19 register R' is incremented by 1.Then, the process advances to step S20 to indicate the number D' input by operating the numeric keypad with the contents of the register R'. It is stored in the position DR' in the RAM, that is, the position corresponding to the first digit.

Next, the process proceeds to step S2I, where it is determined whether the contents of register R' are 4 or more, that is, whether the numeric keypad has been operated four times and the number corresponding to the 4-digit prohibition release number has been input. . The determination in step 321 is N.
When the answer is O, the process returns to step S17 and waits for the next key input by operating the numeric keypad. Thereafter, steps 317 to 521 are repeated, and the numeric keypad is operated four times, resulting in step S21.
If the determination becomes YES, the process advances to step S22.

In step 822, the four numbers entered by operating the numeric keypad and stored in the RAM are compared with the corresponding digits of the prohibition release number stored in the ROM, and then the process proceeds to step 323 to determine the comparison result. . If this determination is YES, step S24. After clearing the error counter C in S25 and stopping the buzzer, the process returns to step S1. Further, when the determination in step S23 is NO, the process proceeds to step 315, and it is determined whether or not the count value has elapsed for 10 minutes. If this judgment is No, step 5
16, the buzzer sounds and the process returns to step 314.

If NO in step 315, step 31
Proceed to step 4. After one hour has passed, the determination in step S14 is Y.
When it becomes ES, the process returns to step S1 and the next key input is accepted. In other words, if incorrect input is made three times due to unauthorized operation, a buzzer will sound for 10 minutes and no key input will be accepted for 1 hour.During this prohibition period, if a number is entered using the numeric keypad, the prohibition will be lifted. If the number matches, the process forcibly returns to step S1 and moves to unlocking processing.

Then, after one hour, there is a key input again, and if the key input is not performed correctly, the determination in step S3 is No.
Then, the process proceeds to step 313 via steps S8a and 8b, and key input is prohibited again for one hour. In other words, if a key entry is made incorrectly even once, only one key entry will be accepted per hour for each incorrect entry. Therefore, unless a prohibition release number is input, unlocking by unauthorized operation is virtually impossible.

Although the flowchart of FIG. 3 does not show the step of resetting the count value of erroneous input, the count value of erroneous input is set to 1 in register D in step S7 after outputting the unlock signal in step S6. You can do this at the same time when setting.

Furthermore, in the above embodiment, the timer counter is started when the input digit does not match the corresponding digit of the PIN due to each key input operation. Regardless, a timer counter may be started every ten key input operations, and when the next key input operation is not within a certain period of time, the process may proceed to step S13.

FIG. 5 shows a block diagram according to the third embodiment of the present invention, in which numeral 10 indicates a numeric keypad for inputting a password when unlocking, and a start key (ST), which is operated at the start of inputting the password. ), and 11 is a lead storing a predetermined, for example, four-digit password, a predetermined input timing time for this password, a four-digit prohibition release number, and a control program. On-memory (
ROM), 12 is a microprocessor (CPU) that operates according to the control program stored in ROMII.
, 13 is a display for displaying a time as a guideline for timing when inputting a password using the numeric keys of the key operation unit 10, and 14 is a display unit in which the PIN number and input timing input using the numeric keys of the key operation unit 10 are predetermined. 15 is the key operation unit 10, which is a buzzer that sounds when the
This is an electric lock that is unlocked when the password and input timing entered using the numeric keypad match a predetermined value.

The CPU 12 has a timer counter, a register, etc. (not shown), and operates as shown in the flowchart of FIG.

That is, the CPU 12 starts its operation when the power is turned on, and waits for a start key (ST) input from the key operation section 10 in the first step S1. Key operation unit 10
When the start key (ST) is operated, step S1
If the determination is YES, the process proceeds to step S2, where registers R and R' are cleared, a timer counter is started, and the timed contents are outputted to the display 13 to display the time after the start key operation.

The process then proceeds to step S3, where it waits for a key input by operating the ten keys on the key operation section 10. If there is a numeric key operation and the determination in step S3 is YES, the process advances to step S4, where the register R is incremented by one. Next step S5
The number entered using the numeric keypad is moved to the location DI% in the RAM indicated by the contents of register R.
That is, it is stored in the position corresponding to the first digit, and the contents T of the timer counter at the time of the numeric key operation are stored in the position TR in the RAM indicated by the contents of the register R.

The process then proceeds to step S6, where it is determined whether the contents of the register R are 4 or more, that is, whether the numeric keypad has been operated four times and the number corresponding to the four-digit password has been entered. If the determination in step S6 is NO, the process returns to step S3 and waits for the next key input by operating the numeric keypad. Thereafter, steps 83 to 36 are repeated, and if the numeric keypad operation is performed four times and the determination in step S6 becomes YES, the process proceeds to step S7.

In step S7, the four numbers entered using the numeric keypad and stored in the RAM are compared with the corresponding digits of the PIN stored in the ROM, and the numbers stored in the RAM at each time the numeric keypad is operated are compared. time and R
Step S8 is performed to compare the input timing time of the PIN stored in the OM, and then determine the comparison result.
Proceed to.

The input timing time stored in the ROM is, if the password is 2678, the first digit is 2 for 1 to 2 seconds after the start key is pressed, the second digit is 6 for 3 to 4 seconds, This stipulates that the third digit, 7, must be input between 6 and 7 seconds, and the fourth digit, 8, must be input between 8 and 9 seconds, and a legitimate operator must remember these timing times. Then, when operating the numeric keypad, each digit can be input at a predetermined input timing by referring to the elapsed time after the start key operation, which is displayed on the display 13. Therefore, when an authorized operator operates the numeric keypad, the password and input timing match those stored in advance in the ROM, and the determination in step S8 becomes YES. However, if an unauthorized operator performs the operation, the comparison result in step S7 generally does not match both the password and the input timing time, and the determination in step S8 becomes NO.

When the determination in step S8 is YES, the process proceeds to step S9, where an unlocking signal is supplied to the electric lock 15 from the output port to drive the electric lock 15 to unlock, and after clearing the error counter C in step S10. Return to step S1.

If the determination in step S8 is NO, the process proceeds to step S11, where the error counter C is incremented by one.

Thereafter, the process advances to step 312, and it is determined based on the count value of the error counter C whether or not this is the first error. If it is the first error, the process advances to step 513, where a timer counter is started to start measuring time. The process then proceeds to step S14.
After sounding the buzzer, the process advances to step S15. In step 315, the timer counter started in step 513 determines whether one minute has elapsed.

If this determination is No, a key input is determined in step S22, and if there is a key input, the following steps 822 to 329
Performs comparison processing with the prohibition release number.

If the numeric keypad inputs do not match or have not been input, the process returns to step 314, and steps 314 and 315 are repeated until the determination in step S15 becomes YES, and the buzzer continues to sound for one minute. When one minute has elapsed and the determination in step 315 becomes YES, the process returns to step S1 and waits for the next start key input. If they match in step 327, the process returns to step S1.

When the determination in step 312 is No, that is, when the count value of the error counter C is 1 or more, step S1
The process proceeds to step 6, where it is determined whether or not the error is the second. If the determination in step S17 is YES, the process proceeds to step S17, where a timer counter is started, and then the process proceeds to step 31g. In step S18, the buzzer sounds, and then the process proceeds to step 519, where it is determined whether 10 minutes have elapsed by counting the time on the counter. If this determination is NO, perform the prohibition release number input and comparison process in steps 330 to 337, and if there is a mismatch or no input, return to step 318, and repeat steps 318 and S19 until the determination in step 319 becomes YES. The buzzer continues to sound for 10 minutes, and then returns to step S1 and waits for the next start key input. If they match, the process returns to step S1.

If the determination in step 316 is No, that is, if there are three or more erroneous inputs, the process proceeds to step 320;
After starting the timer counter here, step S21
Proceed to. In step 321, it is determined whether one hour has elapsed using the timer counter started in step 320, and step S21 is repeated until the determination in step S21 becomes YES. One hour has passed and step S2
If the determination in step 1 is YES, the process returns to step S1 and waits for the next start key input. In other words, if the incorrect input is made three or more times, step S will not be executed even if the correct prohibition release number is input.
I'm trying not to go back to 1.

As described above, in the above-mentioned embodiment, the numbers input by operating the numeric keys after operating the start key and the time of operating the numeric keys after operating the start key are set to RA for each numeric key operation.
When a predetermined number of numbers are entered using the numeric keypad, the number entered using the numeric keypad and the time are compared with the password and input timing time stored in the ROM, respectively. Since the electric lock 15 is unlocked only when both match,
Compared to systems that determine whether or not to unlock by comparing only passwords, it is extremely difficult for an unauthorized person to unlock the lock, and theft prevention is improved.

Moreover, in the illustrated embodiment, if there is a mismatch three or more times, even if the start key is operated for a certain period of time and the numeric keypad is operated, the numbers entered by the numeric keypad operation will not be accepted at all. Even if you repeatedly try to enter various number strings, the lock is frequently interrupted, making it virtually impossible to unlock the lock illegally, further improving theft prevention.

In the above-described embodiment, the elapsed time after the start key operation is used as the input timing time, but the input timing time may be the time between each key operation. In this case, the work performed by the CPU 12 can be done by inserting step S5a indicated by a dotted line between steps S5 and 86 in the flowchart of FIG. 3, and starting the timer counter here. Then, the time measured by the timer counter, that is, the elapsed time from each numeric keypad operation may be displayed on the display 13, and this may be used as a guide for the timing of each numeric keypad operation. Of course, if you do this,
The input timing time stored in the ROM along with the password is also the key operation interval time, for example, the time from the start key to the first digit on the numeric keypad is 1 to 2 seconds, the time from the first digit to the second digit is 3 to 4 seconds, etc. must be.

Further, in the above-described embodiment, the start key is the key operation unit 10.
However, this is not necessary. However, if there is no start key, the timer counter can only be started by the first numeric key operation, so the input timing time is the input time for the second and subsequent digits.

Furthermore, in the above description, input timing times for all keys are specified, but only input timing times for specific digits or input timing times between specific digits may be specified.

In addition, in each of the above embodiments, the password and the prohibition release number may have the same value.

〔effect〕

As described above, according to the present invention, even if input is prohibited due to input of an incorrect PIN, the prohibited state can be forcibly canceled by inputting the prohibition release number. , an authorized person can unlock the door immediately after the input is prohibited.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of the present invention, FIG. 2 is a block diagram showing an embodiment of the present invention, FIGS. 3 and 4 are flowcharts showing the processing performed by the CPU in FIG. 2, respectively. FIG. 5 is a block diagram showing another embodiment of the present invention, and FIG. 6 is a flowchart showing the processing performed by the CPU of FIG. DESCRIPTION OF SYMBOLS 1... Storage means, 2... Key operation means, 3... Comparison means, 4... Unlocking means, 5... Prohibiting means, 6...
・Release means, 10...key operation unit, 11...ROM
, 12...CPU. 13...Display device, 15...Electric lock. Figure 1

Claims (1)

[Claims] A predetermined password stored in a storage means;
The comparison means compares the password entered by the key operation means, and when the two passwords match, the unlocking means is activated, and when they do not match, the inhibiting means is activated, regardless of the password input from the key operation means. In a keyless unlocking device in which the comparing means does not perform a comparison operation for a predetermined period of time, a predetermined prohibition release number is stored in the storage means, and the predetermined number is inputted from the key operation means while the prohibition means is in operation. A keyless unlocking device, characterized in that a comparison means compares the number and a prohibition release number, and a release means for forcibly canceling the prohibition means when both numbers match.