JPH0336097B2 - - Google Patents

Description

Detailed Description of the Invention The present invention provides an electric lock control device that compares an input code from a numeric keypad or the like with a pre-stored code and unlocks the electric lock if they match. This invention relates to an electric lock control device that has extremely high performance and is easy to operate and manage.

Generally, as shown in FIG. 1, an electric lock control device includes a numeric keypad operating section 1, an electric lock 2 provided on the side of a wall W corresponding to a knob N of a door D in response to an output signal from the numeric keypad operation section 1, and an electric lock 2 provided on the side of a wall W corresponding to a knob N of a door D. It is constituted by a control section 3 that is driven. Assuming that the door D is currently locked, the operation is as follows: (a) Operate the numeric keypad 1a to input a code corresponding to the encryption code. (b) Compare the preset code and the input code to find out whether they match or do not match. (c) When they match, an electric lock drive signal is sent to the control unit 3, and the output drives the electric lock 2 to unlock it. (d) Next, turn knob N to open door D and enter the room.

The above is the basic operation for unlocking an electric lock, but the automatic lock type locks when door D is closed.

On the other hand, with the alternating action type, if you enter the code with the numeric keypad 1a, the locked item will be unlocked.
The ones that were supposed to be unlocked are now locked. Conventionally, some electric lock control devices such as electronic locks of this type can change or erase the code, and display when the input code and the code match, but there are measures to prevent code secrecy malfunctions. It was not sufficient in terms of operational convenience, management issues, safety, and reliability.

This invention was developed in view of the above-mentioned problems, and is applicable regardless of the type of electric lock, such as the automatic lock type or the alternating action type. By inserting a code (Dummy Code), you can prevent others from memorizing the code while operating the keys, and when the power is turned on, the initial operation will change the code registration area to the hexadecimal characters A to F that are not on the numeric keypad. By clearing “0,0
...Prevents the electric lock from being unlocked by inputting 0'', and clears the count of the number of malfunctions after a certain period of time after the key is no longer touched.In addition to the number of malfunctions by outsiders, In order to prevent an alarm from going off due to a single erroneous operation by a person, if the circuit is set to registration mode by operating the code registration switch, the stored code will be changed to verification mode after a certain period of time regardless of whether registration is performed or not. By making the signal sent from the operation part to the control part a pulse signal, the electric lock can be activated even though the drive signal is not being output by cutting or shorting the wiring. It prevents the risk of being unlocked, and allows you to turn on and off various operational confirmation sounds and display sounds such as alarm temperature using the numeric keypad, which prevents nuisance caused by neighborhood noise, making it extremely safe. The object of the present invention is to provide an electric lock control device that is excellent in terms of reliability management.

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

In FIG. 2, the operation unit A is shown within the frame of a dashed-dotted line, and the numeric keypad 4 has numeric keys "0" to "9".
“M” used when registering the 10 pieces and the encryption code
key and an "OP" key for starting processing operations. A lamp 5 is arranged around the numeric keypad 4 and displays the result of the operation of the electric lock 2 (FIG. 1). The key data collection unit 6 receives signals 6a, 6b, 6 by input from the numeric keypad 4.
Output c, 6d. The signal 6a is for sounding an alarm indicating that the numeric keypad 4 has been pressed correctly. The signal 6b inputs data to the data buffer section 7. The signal 6c is a start signal for starting the verification or registration operation, and is output when the "OP" key on the numeric keypad 4 is pressed.
The signal 6d is input to the 5-minute timer 8, and the numeric keypad 4
Each time the key is pressed, the 5-minute timer 8 is cleared and starts counting up again from 0. When the 5-minute count up is reached, a signal 8a is sent to the erroneous operation counter 9.
to clear its counter (not shown).

The data buffer section 7 is composed of a shift register (not shown), and when the data is inputted by a signal 6b, the data is serially input to the shift register, and data overflowing from the shift register is sequentially discarded. The signal 7a output from the data buffer section 7 is the contents of the shift register as it is, and is used for writing or reading the encryption code. Another signal 7b output from the data buffer section 7 is address data and is input to the write control section 14. The initial section 10 constitutes a means for clearing the encryption registration area with the hexadecimal characters A to F that are not on the numeric keypad 4 in the initial operation when the power is turned on, and the signal 10b from this initial section 10 is sent to the data buffer section 7 to clear the memory. Entered as data. The collation section 11 is for collating the encryption code with the keyed-in data, and a code consisting of a dummy code and an input code is inputted by the signal 7a, and the encryption code is inputted from the memory section 12 as the signal 12a. A verification start signal 15a is input from the determination section 15, and a signal 11a from the verification section 11 is sent to the memory address control section 13, which sequentially sends out the registered codes. The signal 11b is output when the verification result is ON (yes), and the signal 11d is output when the verification result is NG (no).

A plurality of encryption codes are registered in the memory unit 12. A signal 7a from the data buffer 7 is input as an encryption code, and the encryption code is output as a signal 12a. A signal 13a from the memory address control section 13 controls the memory address of the memory section 12, and a signal 14a from the write control section 14 provides a write pulse when registering the encryption code.

The write control unit 14 constitutes a means for ignoring the hexadecimal characters A to F that are not on the numeric keypad 4 during verification, and has the role of writing the code into the memory unit 12. Write. When the signal 18a is given from the AND circuit 18, the encryption code is written and the initial part 1
When signal 10a is input from 0, a memory clear code is written. An address signal indicating the number of the code to be written is input by the signal 7b.

A write pulse is given to the memory section 12 by a signal 14a from the write control section 14. A memory address control signal is applied to the address control unit 13 by a signal 14b from the write control unit 14, and a buzzer signal is applied by a signal 14c to notify which code has been written.

The initial section 10 is for clearing the memory when the power is turned on, and the clear data (this data is converted into a number in hexadecimal ``15'') is passed through the data buffer section 7 as memory write data. Given. A command to write clear data into the memory is given to the write control section 14 by the signal 10a, and as a result, all "F" codes (hexadecimal) are written into the memory.

The reason for doing this is, for example, if all are cleared to "0" and no code is written, the electric lock 2 will operate when "OP" is input from the numeric keypad 4. Such cases are quite conceivable. When there are multiple encryption codes, for example 3 codes, if the user registers 2 codes but does not register 1 code, this all
The code “0” is also a code and can cause malfunctions.

When the “OP” key is input, the determination unit 15 determines that
It determines whether the work is to be verified or registered and issues each work command. Signal 15a is for verification, and signal 15b is for registration. The signal 15a is sent to the verification unit 11, where the code is verified, and
The code is also sent to the buzzer code verification unit 16, and is verified to see if it matches the buzzer code.

Next, the write control timer 17 will be described. This write control timer 17 constitutes a means for switching to the verification mode after a certain period of time when the encryption code registration switch is operated to set the registration mode. When registering an encryption code, first the encryption code registration switch Bs of the control unit B must be operated.
When this operation signal is input to the write control timer 17 through the signal line Bc, a 5 minute timer is activated, and writing is not possible unless the encryption code is written during this time. The reason for this is that if the encryption code registration switch Bs is left in operation, the encryption code may be broken by mistake. Therefore, writing is not possible after a certain period of time, making the system more secure.

This write inhibition is performed by an AND gate 18. When the encryption code registration switch Bs is operated (OFF) again, the write control timer 17 is cleared.

The buzzer code matching unit 16 checks whether the buzzer code set in advance (memory) matches the code entered using the numeric keypad 4. If they match, a touch confirmation sound on the numeric keypad 4 is heard, Encryption code registered sound and encryption code verification result sound are turned on and off. These controls are performed by an OR gate 19, an AND gate 20, and an OR gate 22, and these gates constitute means for turning on and off various display sounds using encrypted codes. Since this operation is simple, the explanation will be omitted.

The erroneous operation counter 9 counts the number of erroneous codes entered from the numeric keypad 4, and when the number exceeds a certain number, a buzzer Bz sounds to issue an alarm. A signal 11d generated when the input code from the numeric keypad 4 is incorrect is inputted to the erroneous operation counter 9 as an input signal 9a. The input signal 9b input through the OR gate 23 is for clearing the number of the counter, and the output signal 9b is for clearing the number of the counter.
The signal c enters the alarm section 21, where an alarm sound is generated and the buzzer Bz is sounded, at the same time clearing the error counting section 9. In addition to the above conditions, clearing conditions include when the result of the collation unit 11 is OK (yes), and when the numeric keypad 4 is no longer touched for a certain period of time. That is, the alarm unit 21 issues an alarm when counting the number of erroneous operations in which the input code from the numeric keypad 4 is different from the cipher code than a desired number of times, and also means for clearing the counting after a desired period of time after the keys are no longer touched. It consists of

Next, the signal converter 24 will be described. This signal conversion section 24 is configured as a signal conversion means that converts the command signal from the collation section 11 into a pulse signal and sends it to the control section B. When the verification unit 11 confirms OK, the electric lock 2 is driven. However, if the drive signal was transmitted from the operation unit A to the control unit B at a DC level, the electric wire between them would be cut and other OK by shooting with the line
The signal 11b is sent to the control section B by the signal 11b. In order to prevent this danger, the signal from the operation section A is converted into a pulse signal by the signal conversion section 24 and sent.

Next, the operation of this electric lock control device will be explained based on the above configuration.

First, the case of registering a cipher will be described. If you want to register "1234" as the first of three codes that can be registered, press numeric keypad 4.
If you press the keys in the order of 1M1234OP, "1234" will be registered as the No. 1 encryption code. However, registration is only possible if the circuit is in registration mode. Next, to register "573" second, press the keys in the same order as 2M573OP. By doing the same with the third cipher, three types of ciphers can be registered.

Here, you will hear a buzzer to confirm that the registration has been completed correctly. That is, when it is successfully registered as No. 1, the buzzer Bz sounds once with a long tone. When it is successfully registered to No. 2, a long beep will sound twice. When it is successfully registered to No. 3, a long beep will sound three times. If registration is not successful, four short beeps will sound.

When registering the above encryption, a dummy code and encryption code are entered as input code data. All data input is numeric and is imported as hexadecimal. However, from the key are 10 numbers from "0" to "9", 10 to 15 (decimal table)
numbers are not included. These numbers are used as the memory key (M key) OP key and memory clear.

Next, the operation of the shift register (not shown) of the data buffer section 7 will be explained with reference to FIG. This shift register is all cleared to "F" by the signal 10b from the initial section 10 in the initial operation. Here, each numerical data is composed of 4 bits, and "F" is expressed in hexadecimal.

Next, if you press "1", "2", "3", and "4" on the numeric keypad 4, the shift register will become as shown in FIG. 3a.

Next, following the dummy code “5578”, “1234”
When the encryption code is input, the shift register becomes as shown in FIG. 3b.

FIG. 4 shows the state of the cryptographic codes in the memory section 12, where "a" indicates when the code is cleared at the time of initialization, and all become "F". b indicates when the encryption code "1234" is written.

FIG. 5 shows a method of matching the keyed-in code with the stored encryption code. For example, in FIG. The matching is performed in such a way that the same digit as the corresponding digit (FIG. 5b) is ignored. Therefore, in this input code, "5578" is a code that is not verified, that is, a dummy code.

In the above, the number of digits of the encryption code is shown as eight, but it goes without saying that any number of digits may be used.

In addition, the encryption code registration switch Bs is the control unit B.
This is to protect the code being written. This is because it is conceivable that the code stored in memory may be destroyed by operating the encryption code registration switch Bs.

The control unit B receives the pulse signal from the operation unit A through the signal line Ba and drives the electric lock 2, but the result of the operation of the electric lock 2 is transmitted through the signal line Ba.
The signal is sent to the operating section A through Bb, and the lamp 5 indicates that the lock is completed.

In addition, the encryption code registration switch Bs is the control unit B.
This switch is a lock type, and is turned on during registration and turned off during operation, that is, verification.

Next, another embodiment shown in FIG. 6 is one in which an input/output control section (hereinafter referred to as I/O control section) 25 is added to the circuit of the embodiment shown in FIG.
In the figure, the same parts as those in FIG. 2 are given the same reference numerals and the explanation will be omitted.

When using this example at home etc.,
The sequencer incorporates a check procedure that checks whether the door is locked when going out, whether the gas valve has been turned off, or whether lights are turned off before locking the door.

In other words, the ON signal 11b from the matching unit 11
is connected to the I/O control unit 25 so that it is input as an information signal 25a, and each terminal information such as door lock, gas valve electricity, etc. is input to the control unit B as a pulse signal through a signal line Bb. Each piece of information is output to the I/O control section 25 through the signal line Be. An information signal 25 is input from the I/O control unit 25 through the signal line Be.
b is determined and if it is not normal, a signal 25c is output to the control unit B to give a control command to send a drive signal to the terminal that is not normal.

This control signal 25c is a signal for normalizing an abnormality in the terminal. Specifically, for example, if the gas valve is open, the controller B is commanded to close it. When the I/O control unit 25 determines that all the terminals are normal, the I/O control unit 25 sends the signal 25d and the ON signal to the signal conversion unit 24.
A pulse signal is sent from the control unit B to the control unit B to cause the control unit B to send out an electric lock drive signal.

If the terminal is not normal, the control unit B
The information from the signal 25b is checked, and when the answer is YES, a drive signal is sent to the electric lock 2 in the same manner as described above to lock the electric lock 2.

In such a configuration, by combining the yes signal 11g from the verification unit 11 and the function of determining the status of the terminal unit by the I/O control unit 25, it is possible to provide a system that is more secure against locking.

Furthermore, various sensors such as fire and crime prevention sensors can be used together as terminal information.

As another application, if the numeric keypad 4 is used by people from different companies such as Company D, Company E, etc., it may be possible to manage which person has used it.
In the event of damage to a building, it may be necessary to determine who is responsible.

In such cases, a plurality of prepared encryption codes are assigned to each company. Then, information indicating which code was used and whether the verification was OK is outputted from the verification unit 11 as a signal 11g and sent to the signal conversion unit 24.
is input to the controller B as a different pulse signal.
sent to. It is convenient for management if the control unit B prints the clock information on the printer.

In the above, different pulse signals mean that the pulse signal of company D and the pulse signal of company E are different pulse signals, and the electric lock 2 operates even with different pulse signals.

As described above, according to the present invention, when a code code is input from the numeric keypad, a dummy code is input before the code code and is ignored during verification, so that it is kept secret from the memory of the code code by others. Highly secure in terms of retention.

In the initial operation when the power is turned on, the code registration area is cleared with hexadecimal characters A to F that are not on the numeric keypad, so when registering multiple code codes, the code "0, 0,...0" is used. In addition to preventing the lock from being unlocked when entering the
Even if only one code is registered, all other codes are cleared, so it has the same function as before, allowing only one number to be accepted, which is both convenient and highly secure.

Since the count of the number of incorrect operations is configured to be cleared after a certain period of time after the key is no longer touched,
To prevent unnecessary alarms from being issued by preventing the number of erroneous operations by a person concerned from being added to the erroneous operations by outsiders.

If you operate the cipher code registration switch and put the circuit into registration mode, it is configured to go into verification mode after a certain period of time regardless of whether you register or not, so if you turn off the cipher writing switch, It automatically switches to verification mode and prohibits registration mode, which is effective in making the system more secure.

Since the signal sent from the operating section to the control section for driving the electric lock is a pulse signal, the danger of unlocking the electric lock due to disconnection of wiring, short circuit, etc. is prevented.

Touch sound to confirm whether the numeric keypad has been pressed correctly, code code registration confirmation sound, verification result sound ON,
Since the switch is turned off using an encrypted code, it can be turned off using a key switch, making it possible to use a cheaper switch that is superior in terms of installation space and operation, and prevents noise from bothering the neighbors at night. .

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating the entire general electric lock control device, FIGS. 2 to 6 are illustrative of the present invention, and FIG. 2 is a block circuit diagram of one embodiment.
Figures 3a and b are explanatory diagrams of the operation of the shift register of the data buffer, Figures 4a and b are explanatory diagrams showing the initial cleared state of the encryption code in the memory and that the code has been written, and Figure 5. a, b
6 is a diagram illustrating the state of collation between key-in data and an encryption code, and FIG. 6 is a block circuit diagram showing another embodiment. 2... Electric lock, 4... Numeric keypad, 6... Data collection section, 7... Data buffer section, 8... 5 minute timer, 9... Erroneous operation counting section, 10... Initial section, 11... Verification section, 12...Memory section, 13
... Memory address control section, 14 ... Write control section, 15 ... Discrimination section, 16 ... Buzzer code verification section, 17 ... Write control timer, 21 ... Alarm section,
24... Signal converter, 25... Input/output controller, A
...Operation unit, B...Control unit, Bs...Encryption code registration switch.

Claims (1)

[Claims] 1. An operation unit having a numeric keypad and a verification unit that checks whether the input code from the numeric keypad matches a pre-entered and registered cryptographic code;
In an electric lock control device comprising a control unit including a circuit that drives and controls an electric lock according to the match/mismatch signal from the operation unit, the hexadecimal characters A to F that are not on the numeric keypad in the code code are means for ignoring during verification in the verification section; means for clearing the code registration area of the operation section with hexadecimal characters A to F that are not on the numeric keypad with an initial operation when power is turned on; and input from the numeric keypad. means for issuing an alarm when the number of erroneous operations in which a code is input different from the encrypted code exceeds a desired number of times, and for clearing the counting by a timer after a desired time has elapsed after the numeric keypad is no longer touched; and a code provided in the control section. means for switching to verification mode after a certain period of time when the code registration switch is operated to enter registration mode; a signal conversion means to send to the , and turning on various display sounds when operating the numeric keypad of the operation section;
An electric lock control device characterized by comprising means for turning off the lock using an encryption code.