JPS61246481A - Electromechanical type operation apparatus controlled by cord - Google Patents

Abstract

The invention relates to an electromechanical operating device controlled by a code modifiable remotely and intended for controlling an access-monitoring appliance. The electromechanical device comprises a control unit arranged in the vicinity of the appliance to be controlled and possessing a code input interface (1, 2) connected to a comparator (3), itself connected to a memory (4) containing an actuating code and controlling an electrical actuating device (5), and a coding unit comprising a remote-coding device and connected to the control unit. The control unit also possesses a selector device (12, 15) controlled by the coding unit and transmitting selectively to the memory (4) a code supplied by the input interface (1, 2) or transmitted by the coding unit. The invention is used particularly for controlling the doors of hotel rooms or any other premises, of which the accesses to be protected must or can be monitored by means of a code which has to be modified frequently for security reasons. <IMAGE>

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is activated by a code and controls the entry of electric locks, door opening motors, etc. so that only a specific person who knows the code can enter. It relates to electronic operating devices that issue commands to devices.

BACKGROUND OF THE INVENTION In general, the above-mentioned electronic operating device includes a control unit disposed near a controlled device to confirm a code entered by a user and issue a command signal to an electrical operating device if the code is correct; and a monitoring unit located at a remote location to control and/or manage the access.

Problems to be Solved by the Invention The device described above has a lock which is controlled by a code to control the opening and closing of a room in a hotel or a motel, and a remote location from the door to be controlled, such as in an office of a hotel. and a code unit consisting of a remote code device connected to a control unit.

Such electric locks are described in particular in French Patent No. 2,224°62.
No. 9, the door opening code for each door can be changed as desired from the hotel office using a remote code device. Therefore, each guest has to code his or her room door at the hotel reception, which is conversely restrictive, especially in the case of motils. Additionally, guests are often forced to create their own codes in the presence of hotel staff, leaving them concerned about whether their codes are truly confidential.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an electromechanical control device commanded by a remotely changeable code of the above type, which can be coded "in the field" by the user. In the case of a hotel, this allows a guest to enter a code from the sky that opens a door known only to him or her for the duration of his or her stay, and hotel staff can receive the above code at the end of the guest's stay. be informed.

Means for Solving the Problems An electromechanical operating device according to the invention selectively supplies a memory with codes inputted via an input interface or sent via a code unit and is controlled by a remote code unit. The control unit is characterized in that the control unit further includes a selection device. The control unit consists of a multiplexer receiving the output of the input interface and the code sent via the code unit, the output of this multiplexer being sent to the write input of the memory. This multiplexer receives instructions from a remote code unit.

Another feature of the invention is that the control unit includes an OR logic circuit that receives a signal indicating that a code digit has been provided via the input interface and a remote code command, the output of which is connected to the write command port of the memory. The point is that

Yet another feature of the invention is that the central unit includes a counting device for the code digits supplied via the input interface, the output of the counting device being The input is at the point where the digits are connected to a limiter for the number of digits in the code that resets to zero on the device. The output of the limiter is connected to an input code counting device and a standby circuit, the instruction unit including an AND logic circuit receiving the output of the standby circuit and a signal corresponding to the number of codes;
The output of the logic circuit issues a false code alarm.

Embodiment The control unit of the electric lock shown in FIG. 1 includes, for example, a key input device and an optical, magnetic or infrared code reader 1.
The output of the binary coder 2 following this input interface is sent to one of the inputs of the comparator 3. The contents of the memory 4 are sent to the other input of this comparator. The output of the comparator 3 commands the electric device 5 to open the electric lock via the comparison logic described below.

The electric lock further includes a remotely located code unit which sends remote code commands via inlet 6 and code pulses via line 7. These two lines are connected to the input port of the AND logic circuit 8. This AND logic circuit 8 controls a clock 9 following which the contents of the counter 11 are sent to the write entry port of the memory 4.

In the present invention, the control unit has a selector controlled by the code unit, and this selector selects between the code sent from the coder 2 branched from the output of the interface and the code supplied from the counter 11. can be sent to memory 4. This selection device basically consists of a multiplexer 12 which receives instructions from the code unit via line 13; this multiplexer receives the output of the code unit 2 and the output of the counter 11; sent to the input port. The OR logic circuit 14 combines the signal corresponding to the remote code device, ie the output of the logic circuit 8, and the signal corresponding to the code device of the key input bag M1, ie the code device @
2. The output of this OR logic circuit 14 is sent to the private instruction port of the memory 4.

The output of the logic circuit 8 is also sent to an input interval number counter 10, and the output of this counter is sent to a multiplexer 15. An input digit counter 16 branches off from the output of the code device 2 and the output of this counter is sent to a code digit number limiting circuit 17 and to a second input of the multiplexer 15.

The command to reset this counter 16 to zero is the limiter 1
Sent from 7.

The comparison logic commanded by the comparator 3 is constituted by a number of correct numbers counter 18, to which a comparator 19 between the number of correct numbers and the number of the number limiter 17 is connected. The output of this comparator 19 issues a command to a so-called electric lock via an OR logic circuit 20. O above]
Also sent to the logic circuit 20 via line 21 is an open command supplied from the code unit. In this case, the signal on line 21 is an AND1! between the signal from any switch or button fixed near the key input device and the valid state of the code unit. can be made functional. This function allows the electromechanical arrangement 5 to be operated without having to supply a code to the comparator 3.

The key input device 1 has a zero reset key R, which activates the temporary switch 22 of the lamp 23 of the key input device and resets the number of input digits counter 16 and the number of correct digits counter 18 to zero. do.

FIG. 2 shows one embodiment of a number limiting circuit such as circuit 17. Number of input numbers counter 1 shown in this figure
6 has an output port corresponding to 4 bits of the binary code, and these 4 bits are sent to multiplexer 15. In order to limit the number of input digits, either send two of the outputs of the counter 16 to the AND logic circuit 34, or send one of the above outputs to the two inputs of the AND circuit 34; is sent to the zero reset port of the counter 16 via the AND logic circuit 35 of the counter 16. The AND circuit 35 is further sent a signal corresponding to the above from a circuit that resets to zero when the zero reset button of the key input device 1 is pressed, that is, an arbitrary code reader. In the illustrated example, the A N D' circuit is actually a NAND circuit. This circuit 34 allows 1 bit or 2 pits to become 1
All binary or decimal numbers equal to 1°2
．． 3.4.5.6.8.9.10.The number of input digits can be limited to 12 and 16.

One feature of the present invention is that, when a predetermined number of incorrect codes are entered using the key input device 1, a device is provided which can issue an alarm indicating that the code is "wrong". This device includes a standby device 24 and an input code counter 25.
The drive of the standby device 24 is commanded by the code number limit circuit 17, and its output pulses are counted by the counter 25. The outputs of the standby bag@24 and the input code counter 25 are sent to an AND logic gate 26 and constitute a signal indicating that this output is an incorrect code. The error code counter 25 is reset to zero at the end of the standby signal provided by the standby device 24, and the standby bag W124 is inhibited by the open electromagnetism command signal provided by the OR logic circuit 20.

The operation of the above electric formula will be explained below.

A user who knows the code to open the electrical system first presses the zero reset button R of the key input device 1.

As a result, the illumination lamp 23 of the key input device lights up. Pressing this button R also resets the input digit counter 16 to zero, thereby allowing the system to start. Furthermore, the correct number counter 18 is also reset. Each time the user presses a code number on the key input device, that number is binarized in the code device 2 and a comparator 3 compares this number with the number supplied from the memory 4. Each time these two numbers match, the comparator 3 commands the counter 18 so that the number of correct numbers in the series counted by this counter 18 is equal to the number given in the limiter 19, i.e. the number of digits in the code. Correspondingly, this limiting circuit commands energization of the electrical system 5 via the OR gate 20. If the two numbers sent to comparator 3 are not equal, the output of comparator 3 commands, for example via inverter gate 27, to reset the counter of the correct number to zero. OR logic gate 20 provides a valid signal only when all of the digits of the code are combined sequentially in a predetermined order.

If the code stored in the memory 4 is to be changed remotely, a series of remote commands are sent via line 6 and an interval signal of varying width is sent via line 7. When this interval signal matches the code command of the remote command, A
Pulses are sent from the clock 9 via the ND gate 8 to the counter 11, which counts the pulses and sends the corresponding number to the multiplexer 12. A remote code signal supplied via line 13 instructs the multiplexer to write said number into memory 4.

Interval counter 10 counts the intervals sent over line 7, ie the code digits sent. The output of this counter is sent to multiplexer 15 and on line 1
A remote code instruction supplied via 3 acts on this multiplexer 15, causing the multiplexer 15 to
The address of the memory 4 is changed according to the number of intervals counted by zero.

If you want to encode the memory 4 using the key input device 1, that is, if you want to enable the user to register a code of his or her own choice without having to go to a remote location for encoding, the following steps are taken: A signal is sent to internal coded command line 13.

Both multiplexers 12 , 15 are then ready to pass each of the binary digits supplied by the coding device 2 and the number of input digits supplied by the counter 16 to the memory 4 . The procedure for changing the memory 4 and its addresses is carried out in the same manner as for remote encoding in Section L. In either case, the write command to memory is sent to logic gate 8
This is carried out by an OR logic circuit 14 which receives pulses corresponding to the encoding level sent by line 7 supplied via H2 or signals representative of numeric input by key input device @1 supplied via coding device H2. .

According to the invention, the opening code can be registered in the memory 4 via lines 6.7.13 and 21 independently from the key input device or from the remote code unit. Coding at a remote location or in the field takes place in each case under the control of a coding unit which sends the corresponding commands.

Another important feature of the present invention is that if a certain number of incorrect codes are entered from the key input device within a predetermined period of time, an alarm signal indicating an incorrect code is issued. This is accomplished as follows. That is, each time the number of input digits limiting circuit 17 records a number of input digits equal to the number of code digits, it not only resets the input digit counter 16 to zero, but also issues a command to the waiting circuit 24 to e.g. 30
Causes a wait equal to seconds. Once the limiting circuit 17 has counted a predetermined number of input codes, it also pulses an input code counter 25 which supplies a signal to an AND logic circuit 26. For example, if one of the input ports of the AND circuit 26 is connected to the output of the counter 25 corresponding to a bit of higher weight, a signal is output to the AND circuit 26 every time the counter 25 counts eight input codes. . This AND circuit receives a standby signal supplied from the standby device 24, and if a predetermined number of codes continue during the standby signal period, a code error alarm signal is obtained at the output of the AND circuit 26, and this signal is recorded. can be sent to a remote code unit. Preferably, this warning is done in a covert manner so that only persons at the remote code unit are informed of an attempt to open the door. In order to prevent a code error signal from being output when a correct user enters the correct code immediately after someone else who tried multiple codes to open the lock, the open signal issued from the OR circuit 20 is connected to a standby circuit. 24 standby signals are blocked. This circuit can also reset the false code alarm device to zero after a valid person opens the door. At the end of the standby signal, the standby circuit 24 resets the counter 25 to zero.

Another possibility of the invention is that the detection of an error code causes the insertion member, in this case the key input device, to be shut off for a predetermined time. The above time can be doubled each time another error code is detected. That is, for example,
After entering an error code, the key input device is blocked for 10 seconds, then for 20 seconds in the case of a second error code, and 40 seconds in the case of a third error code. This increases the time required for an unauthorized person to try the code multiple times very quickly, and in practice there is no chance that the circuit will be entered so many times that the correct code will be obtained by chance.

It is also possible to issue an alarm when an attempt is made to open the door (impact or pulling out of the key input device or door).

The above-described embodiments are merely illustrative and are not limited thereto, and changes or modifications can be made without departing from the scope of the present invention. In particular, the components in the conceptual diagram of FIG. 1 can be replaced with other components having the same function.
(optical code reader, magnetic stripe, infrared, high frequency code reader).

The field signal that must be conveyed to the code unit has active safety and is normally in a stop logic state when there is no alarm. Therefore, a break in the communication cable will generate an alarm.

Examples of the alarm signal include an alarm caused by forced input and an alarm caused by an attempt to open the door by applying an external voltage to the electrical equipment configuration.

Although the memory 4 is of the parallel input type, a non-volatile memory that can hold the code when the supply voltage drops so that the door can be opened even if the voltage is not held can be used. In this case, it becomes a serial input memory instead of a parallel input memory.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an electric lock according to the present invention, Fig. 2 is a block diagram showing an electric lock according to the invention;
The figure is a detailed diagram of the block diagram of FIG. 1. 1... code reader, 2... coder, 3.19
...Comparator, 4...Memory, 5...Electrical device, 6
,7゜13.21... line, 8.26.34.35
・-AND logic circuit, 9 ...ri o y 'y, 10
．． 11,16°18.25...Counter, 12.15
...Multiplexer, 14.20...OR logic circuit, 17...Limiter, 22...Switch, 23...
Lamp, 24...standby device, 27...inverter gate. Patent Applicant

Claims (9)

[Claims] (1) a controlled device having a code input interface (1, 2) connected to a comparator (3) for storing an operating code and connected to a memory (4) and issuing commands to an electronic operating device (5); an electromechanical system comprising a control unit located in the vicinity of the control unit and a coding unit connected to this control unit and having a remote coding device, which can be changed remotely and is controlled by a code controlling the device controlling the access. In the operating device, a selection device controlled by the encoding unit so that the control unit further selectively supplies codes supplied from the input interfaces (1, 2) or codes sent from the encoding unit to the memory (4); An electromechanical operating device characterized by comprising (12, 15). (2) The control unit has an input interface (1,
2) and a multiplexer (12) fed with the code sent from the encoding unit, the output of said multiplexer (12) being sent out via the write input (line 13) of the memory (4). An electromechanical operating device according to claim 1. (3) The control unit has interfaces (1, 2)
comprising an OR logic circuit (14) to which is supplied a signal representing the supply of a code digit by , and a remotely encoded command, the output of which is connected to the write command port of the memory (4); An electromechanical operating device according to claim 1 or 2, characterized in that: (4) The control unit has an input interface (1, 2
), the output of which is connected to a limiting circuit (17) for the number of code digits supplied from the input interface (1, Claims 1 to 3, characterized in that the input digit counting device (16) is reset to zero for a predetermined number of code digits supplied from 2).
An electromechanical operating device according to any one of paragraphs. (5) The output of the limiting circuit (17) is connected to a standby circuit (24) and an input code counter (25), and the control unit further comprises an AND logic circuit (26),
The logic circuit is connected to the output of the counter (25) so as to issue an error code alarm signal when a predetermined number of incorrect codes are input to the interface (1, 2) during a period corresponding to the standby of the standby circuit (24). 5. The electromechanical operating device according to claim 4, wherein a standby signal is supplied from a standby circuit (24). (6) The electric machine according to claim 5, wherein the standby circuit (24) resets the input code counter (25) to zero when the standby signal supplied by the standby circuit disappears. expression operating device. (7) The comparator includes a number-to-number comparator (3), a correct code number counter (18), and a predetermined number comparator (19) corresponding to the number of numbers in the door opening code. An electromechanical operating device according to any one of claims 1 to 6, characterized in that it consists of: (8) The interfaces (1, 2) turn on the illumination (23) of the key input device and control each counter (23) of the control unit.
16, 18) to zero
R) The electromechanical operating device according to any one of claims 1 to 7. (9) Claims characterized in that the device includes an error code detection device that shuts off the input interface for a predetermined period after inputting an error code, and the period doubles each time a new incorrect code is input. The electromechanical operating device according to any one of items 1 to 8.