JP2002030838A - Wireless lock system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless lock system capable of unlocking or locking a single door by plural keys mutually different in transmission data and capable of unlocking or locking plural doors by a single key. SOLUTION: In this wireless lock system for unlocking or locking the doors by outputting a signal to a driving part of a lock when coinciding with a preregistered signal value by receiving transmission data on the door lock side by transmitting the data from the key side by a beam of light or a radio wave, plural signal values are registered on the door lock side so as to be capable of checking up with the transmission data transmitted from the plural keys and different with every key, and when the data transmitted from the keys coincides with one of the registered plural signal values, the doors are unlocked or locked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a wireless lock system.

[0002]

2. Description of the Related Art In recent years, wireless lock systems have been widely used. This system transmits data by light or radio waves from the key side, and receives the transmitted data on the door lock side and outputs a signal to the lock drive unit if it matches the signal value registered in advance, and outputs the signal to the door. It unlocks or locks.

However, in this conventional lock system, only one signal value (digital signal value) is registered on the door lock side. Therefore, unless the key has one key or exactly the same transmission data. The door could not be unlocked and locked. For this reason, if an attempt is made to use this type of lock system for a door such as an auto lock which has recently been used for a common entrance of an apartment or the like, a resident of the apartment will not only have a key for each room but also a common entrance. Had to have a key for it, which was very inconvenient. In addition, in the condominiums and the like, a manager or the like owns a lock key for each room.
Only one signal value is registered on the door lock side, and the registered signal values of each room are naturally different. Therefore, the manager must have a duplicate key for each room and manage the duplicate key. Was sometimes complicated.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention
An object of the present invention is to provide a wireless lock system in which one door can be unlocked or locked by a plurality of keys having different transmission data from each other, and a plurality of doors can be unlocked or locked by one key. It is.

[0005]

That is, according to the first aspect of the present invention, data is transmitted by light or radio waves from the key side, and the transmitted data is received by the door lock side and coincides with the signal value registered in advance. Then, a signal is output to the drive unit of the lock to unlock or lock the door, and the door lock side can collate with different transmission data for each key transmitted from a plurality of keys. Multiple signal values are registered,
The present invention relates to a wireless lock system which unlocks or locks a door when data transmitted from a key matches one of a plurality of registered signal values.

According to a second aspect of the present invention, in the first aspect, the transmission data from the key side is composed of a user number and an encryption code, and the encryption code is a user number, an encryption number, and a synchronization counter. Is encrypted by an encryption algorithm.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram showing a mechanism on a key side which is a transmitting side showing an embodiment of the present invention, FIG. 2 is a block diagram showing a mechanism on a door lock side which is also a receiving side, and FIG. 3 is a storage device in FIG. FIG. 4 is a diagram showing an example of a method of creating transmission data, FIG. 5 is a diagram showing an example of transmission data, FIG. 6 is a diagram showing an embodiment of the present invention, and FIG. It is a figure showing a use mode.

As can be seen from the block diagram on the key side in FIG. 1 and the block diagram on the door lock side in FIG. 2, according to the present invention, data is transmitted from the key side by light or radio waves, and the door lock side receives the transmitted data. If the signal value coincides with a signal value registered in advance, a signal is output to the drive unit of the lock to unlock or lock the door.

That is, on the key side of FIG. 1, a storage device (EEPRO) in which data such as a predetermined password (number) is previously input as a transmission data format by an input device.
M), a control unit composed of a microcomputer and the like, a power supply (here, a 3V lithium battery), and a necessary booster / alarm / reset unit are arranged. By pressing a button on the key operation unit, the predetermined password (number) ) Is transmitted as modulated light or radio waves from the transmission unit.

On the door lock side in FIG. 2, similarly to the above, a storage device (EEPROM), a microcomputer or the like in which data such as a predetermined password (number) is previously input as a reception data format (signal value) by an input device. A control unit, a power supply (commercial power supply in this case), and a drive unit for opening and closing the lock are arranged. The reception unit demodulates and converts the light or radio wave transmitted from the key side into a digital signal. If the received data format matches the received data format of the storage device, the drive unit is operated to unlock or lock.

The data transmission medium may be light or radio waves. In particular, light and radio waves are mixed for each data or each character of data, such as light-radio-radio-light. You may. In this case, the transmission section on the key side and the reception section on the door lock side respectively have a modulation section for light and a radio wave,
Although a demodulation unit is required, it is extremely effective in making decoding difficult and preventing copying.

According to the present invention, in the above-described wireless lock system, a plurality of signal values are registered on the door lock side so as to be able to collate with different transmission data for each key transmitted from the plurality of keys, The door is unlocked or locked if the data transmitted from the key matches one of the registered signal values.

As shown in FIG. 3, the storage device (EEPROM) on the door lock side according to the present invention has a plurality of data storage areas. Also, different signal values can be registered and deleted in each data storage area. Then, the signal values of a plurality of keys are registered in advance in each data storage area of the storage device by the input device, and when the transmission data from the key side is received, the control unit of the door lock side,
It is checked whether the transmission data matches one of a plurality of signal values registered in the storage device, and if they match, the driving unit is operated. Thus, the door can be unlocked and locked with a plurality of keys having different transmission data. Note that the number of data storage areas in the storage device may be appropriately determined according to the usage mode and the like, and the number of signal values registered in each data storage area in advance may be appropriately determined.

In this embodiment, as shown in FIG. 4, the transmission data from the key side is composed of a user number and an encryption code set for each key. The encryption code is formed by encrypting a user number, an encryption number set for each key, and a synchronization counter with an encryption algorithm. A specific example will be described with reference to FIGS. Here, the transmission data is composed of a user number having a 32-bit numerical value and an encryption code having the same 32-bit numerical value.

The encryption code of this embodiment is created by the following algorithm. First, a predetermined encryption number is divided by a predetermined user number, and the quotient and remainder are each set to a 16-bit numerical value. Next, 1
A 16-bit numerical value is created by adding a synchronous counter consisting of an extra 16-bit numerical value represented by 6 bits.
A 32-bit encryption code is created together with a quotient consisting of a 6-bit numerical value. Then, a total of 64 bits of data in which the encryption code and the user number are linked are created, and this is transmitted as light or radio waves from the transmission unit. The above-mentioned synchronization counter is a counter which is incremented by one each time a button on the key operation unit is pressed, and is provided on the door lock side, and is incremented by one each time transmission data is received from the key. This is to be compared with a counter.

On the door lock side, when the receiving section receives the transmission data, first, the user number of the data is checked to determine which of the registered signal values corresponds to which signal value. . Next, the encryption code is checked. In checking the encryption code, first, the encryption code is decrypted, and the encryption number is checked. After that, the synchronization counter is checked. Here, first, the counter value of the transmission data matches the counter value of the door lock side or +16.
Check if it is within the range, and if this is the case, the control unit rewrites the counter value of the door lock side to the counter value of the transmission data by 1 and saves it, and then sends the unlocking or locking signal to the drive unit. Output. If the counter value of the transmission data does not match the counter value on the door lock side or is not within +16, it is checked whether the counter value is within the range of the 32K window. Temporarily stores the counter value of the transmission data and outputs an unlocking or locking signal to the driving unit. And
Next time, if the counter value of the data transmitted from the key matches the counter value temporarily stored on the door lock side or is within +16, the counter value is used as the door lock side counter value. Officially rewrite and save.

As described above, by making the transmission data include the encryption code, it becomes impossible or extremely difficult to decrypt the key data, which is very preferable in terms of security. The data format and algorithm of the transmission data and the signal value are not limited to those described above.
Any appropriate one may be used, and various conventionally known ones may be applied.

The present invention can be used in various modes as illustrated in FIGS. In the mode shown in FIG. 6, the common entrance of an apartment or the like and each room can be unlocked and locked with one key. That is, transmission data a, b, and c are stored in keys A, B, and C held by the resident of each room, respectively.
2, 3 have signal values a, a corresponding to the keys A, B, C, respectively.
b and c are registered. In addition, door 4 of common entrance,
The signal values a, b, and c of the keys A, B, and C are all registered. Therefore, the keys A, B, and C can not only unlock and lock the doors 1, 2, and 3 of their own rooms, but also unlock and lock the door 4 of the common entrance.

The mode shown in FIG. 7 is a case where a manager or the like in an apartment or the like has a key D as a master key for each room. That is, the transmission data e, f, and g are stored in the keys E, F, and G held by the resident of each room, respectively, and the master key D held by the manager is also stored.
Stores transmission data d. Signal values e, f, and g corresponding to the keys E, F, and G of the own room are registered in the doors 4, 5, and 6 of each room, respectively.
The signal value d of the master key D is registered. Therefore, each room can be unlocked and locked by using a master key in addition to the key of its own room, and the manager can open the doors of all the rooms if he has one master key.

Further, the storage devices (EE) on the key side and the door lock side
Since the PROM can be erased and rewritten, the transmission data on the key side and the signal value on the door lock side can be easily changed. Thus, even when the resident of the apartment or the like is changed, the information of the key that can easily unlock and lock the door can be changed without replacing the cylinder or the like. It is also possible for the contractor to create a key that can be used only during the construction period.

It should be noted that the wireless lock system of the present invention, in addition to the above, unlocks a plurality of doors with one key.
It can be used for locking and unlocking and locking one door with a plurality of keys.

[0022]

As shown and described above, according to the wireless lock system of the present invention, a plurality of keys are transmitted to the door lock side so as to be able to collate with different transmission data for each key transmitted from the plurality of keys. Since the signal value is registered, one door can be unlocked or locked with a plurality of keys having different transmission data from each other, and a plurality of doors can be unlocked or locked with one key. . Therefore, if this wireless lock system is applied to a common entrance of an apartment or the like, or a master key of a manager or the like, it is not necessary to carry many keys, which is very convenient.

Further, if data having a complicated encryption code is transmitted as a signal for unlocking and locking as in claim 2, it is impossible or impossible to copy the data by decryption or training, and security is improved. A high wireless lock system can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a mechanism on a key side, which is a transmitting side, showing an embodiment of the present invention.

FIG. 2 is a block diagram showing a mechanism on a door lock side which is also a receiving side.

FIG. 3 is a block diagram illustrating details of a storage device in FIG. 2;

FIG. 4 is a diagram illustrating an example of a method of creating transmission data.

FIG. 5 is a diagram illustrating an example of transmission data.

FIG. 6 is a diagram showing one use mode of the present invention.

FIG. 7 is a diagram showing another use mode.

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Claims (2)

[Claims] 1. The key side transmits data by light beam or radio wave, and the door lock side receives the transmitted data and outputs a signal to a lock driving section if the signal value matches a signal value registered in advance. In the door lock side, a plurality of signal values are registered so that each key transmitted from a plurality of keys can be compared with different transmission data, and the key is transmitted from the key. A wireless lock system for unlocking or locking a door if the registered data matches one of a plurality of registered signal values. 2. The transmission data from the key side is composed of a user number and an encryption code, and the encryption code is
2. The wireless lock system according to claim 1, wherein the system comprises a user number, an encryption number, and a synchronization counter encrypted by an encryption algorithm.