JPH01192970A - Infrared locking device - Google Patents

Abstract

PURPOSE:To prevent a dishonest unlocking by sending out a first code number, a random number signal from a controlled object and the result obtained by performing arithmetic of a second code number to be memorized for itself by a specific function. CONSTITUTION:An infrared key 2 is equipped with an infrared luminous device 2c emitting a code number inputted from a setting machine 1 as an infrared signal, an infrared light receiving device 2d receiving the infrared signal emitted by a controlled object 3, a CPU and others. Then, the controlled object 3 receives the first code number from the key 2, and when its own code number corresponds with the controlled object 3, a random number signal is sent out to the key 2. The arithmetic of the random number signal and the second code number is performed at the key 2 by a specific function to send out, the controlled object decides the correspondence with its own code number, and an actuator 3b is driven to perform unlocking.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an infrared lock device that unlocks the lock of a vending machine or the like with a key using infrared rays.

[Conventional technology]

In conventional vending machines, such as cola and cigarette vending machines, when collecting charges or replenishing products, the front door is opened using a mechanical key and the charges are taken out from the fare box. Or, it was common to replenish products.

[Problem to be solved by the invention]

However, since the conventional vending machine described above uses a mechanical key, there is a problem in that the door can be easily opened by unauthorized persons and charges and products can be taken out.

In addition, to collect fees and replenish products, workers use mechanical keys to visit vending machines in predetermined areas during working hours. There were also problems in that time management was troublesome and computer management was difficult.

The present invention has been made in view of the problems of the conventional technology, and its purpose is to perform two-way communication between an infrared key and a receiving section of a controlled object. It is an object of the present invention to provide an infrared lock device which prevents unlocking of a lock due to unauthorized operation and which allows a controlled object to be unlocked for a number of operations and a working time set in advance on an infrared key.

[Means to solve the problem]

In order to achieve the above object, the infrared lock device of the present invention sends out a first code number, and calculates a random number signal from a controlled object and a second code number, which will be described later, using a certain predetermined function. and an infrared key that sends out the results.
When the first code number from the infrared key is received and matches the first code number stored by the user, a random number signal is sent, and the second code received by the infrared key and stored by the user receives the calculation result from the infrared key. This is done by a controlled object such as a vending machine that operates an actuator to unlock a cylinder lock when the same occurs.

Further, in the infrared lock device of the present invention, a code number for unlocking and the number of times a controlled object can be operated, which will be described later, are input, and each time the code number is transmitted and the controlled object is unlocked. The actuator is activated when the number of times is subtracted by one and the number of times is reset to O by a reset signal from the controlled object, and the code number from the infrared key matches the code number stored by the infrared key. A cover for a vending machine, etc. that operates to unlock the cylinder lock and sends a signal to subtract one from the number of times, and also sends a signal to reset the number of times to 0 when the code numbers from the infrared key do not match. This is done by the control body.

Further, the infrared lock device of the present invention has an infrared lock device in which a code number for unlocking and a time during which a controlled object, which will be described later, can be operated are input, and the time is reset to 0 by a reset signal from the controlled object. When the code number from the infrared key matches the code number stored by the key, the actuator is operated to unlock the cylinder lock, and
This is done by a controlled object such as a vending machine which sends a signal to reset the time to 0 when the code numbers from the infrared keys do not match.

[For production]

In the infrared lock device of the present invention, a controlled object receives a first code number sent from an infrared key, and sends out a random number signal when the first code number matches its own code number. The infrared key that has received this random number signal calculates the random number signal and the second code number using a predetermined function and sends out the result, and the controlled object that has received this calculation result uses its own code number. If they match, the actuator is driven to release the locking means and open the door. Further, when the lock means is released, the number of operations input to the infrared key is subtracted by one. Furthermore, the operating time is inputted into the infrared key, and if the code number from the infrared key and the code number of the controlled object do not match, a reset signal is sent and the number of times the infrared key is pressed is changed. This resets the time and disables subsequent unlocking operations.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
In the figure, 1 is a setting machine for inputting a code number for unlocking, which is information necessary for the infrared key 2 to be described later, the time at which the code number can be transmitted, and the number of times the lock can be unlocked; 2 is a setting machine for inputting the information necessary for the infrared key 2 Infrared key 3 receives the infrared signal from infrared key 2 and transmits the information as an infrared signal by operating an operation switch. This is a controlled object, such as a vending machine, which unlocks the lock when it mutually communicates with the information and when they match, and also sends a signal to subtract one from the number of times the information is entered on the infrared key.

Next, the configuration of the setting machine 1 described above will be explained in Figs. 1 and 2.
This will be explained with figures. This setting device 1 includes an insertion slot 1a into which an infrared key 2 is inserted, a keyboard lb such as a numeric keypad that is operated when inputting information to the infrared key 2, and a display device that displays information when the keyboard 1b is operated. IC
1 When the infrared key 2 is inserted into the insertion slot la, an output terminal ld, ROMI e, RAMI f, and CPUI g are electrically connected to the input terminal of the infrared key 2.
It houses a microcomputer consisting of: This microcomputer operates as shown in FIG. 5, which will be described in detail later.

Further, the configuration of the above-mentioned infrared key 2 will be explained with reference to FIGS. 1 and 3. The infrared key 2 includes a push-button operation switch 2a, and an input terminal 2b that is electrically connected to the output terminal 1d of the setting device 1 when inserted into the insertion slot la of the setting device 1. Infrared emitter 2C that transmits the code number input from setting device 1 as an infrared signal
and an infrared receiver 2d that receives a coded infrared signal transmitted from the controlled object 3, a ROM 2e, and an RA.
, and a microcomputer consisting of M2fSCPU2g. This microcomputer operates as shown in FIG. 6, which will be described in detail later.

Furthermore, the configuration of the above-mentioned controlled body 3 will be explained with reference to FIGS. 1 and 4. This controlled body 3 includes a control circuit 3
an actuator 3b operated by a signal from a, a cylinder 3d rotated by a mechanical key 3C, an unlocking member 3e that unlocks the locking means by operating the actuator 3b or cylinder 3d, and an unauthorized door of the controlled object 3. a plurality of pry sensors 3r that detect when the pry sensor 3r detects unauthorized pry-opening; a buzzer 3g that issues an alarm when the pry sensor 3r detects unauthorized pry-opening; and a printer 3h that prints the operating status of the control circuit 3a. An infrared receiver 31 receives a coded infrared signal from the infrared emitter 2C of the infrared key 2, and an infrared receiver 31 sends a coded infrared signal from the control circuit 3a to the infrared receiver 2d of the infrared key 2. A light emitter 3j, a power source 3 such as a battery that supplies power to each of the devices, and a ROM 3I that constitutes a control circuit 3a! ,,RAM3m.

A microcomputer consisting of a CPU 3n is housed therein. This microcomputer operates as shown in FIG. 7, which will be described in detail later.

Note that 30 is a registration switch that is operated when inputting the code signal into the RAM 3m of the microcomputer using the infrared key 2.

Next, the operation of each of the above-mentioned devices will be explained with reference to flowcharts shown in FIGS. 5 to 7.

First, the operation of inputting information from the setting device 1 to the infrared key 2 will be explained with reference to FIGS. 5 and 6.

Here, the data input from the setting device 1 to the infrared key 2 is the code number A for unlocking the door of the controlled object 3.
, B, the time T during which the infrared key 2 can be operated, that is, the working time T, and the number of times N corresponding to the number of times the charge is collected from the controlled object 3 and the product is replenished. Furthermore, the reason why the code numbers for unlocking are A and B is to limit the controlled objects 3 that can be unlocked by the infrared key 2. That is, when the controlled object 3 receives the code number A sent from the infrared key 2, the received code number A
and the code number A stored in the controlled body 3, and when they match, a random number is transmitted from the controlled body 3, and this random number is calculated by the function of the code number B. The infrared key 2 that receives this calculates this random number as a function of the code number B and sends it again, and the controlled object 3 that receives the calculated result compares it with the result calculated by itself and opens the door when it matches. It can be unlocked and opened. Through such mutual communication, a specific controlled object 3 can be unlocked only by a specific infrared key 2, so that unauthorized unlocking can be prevented. Furthermore, if the code number A is different from the one stored in the controlled object 3 when the code number A is transmitted from the infrared key 2,
Since the controlled object 3 sends a cancel signal and resets the working time and number of operations stored in the infrared key 2, it becomes impossible to unlock the door by operating the infrared key 2 from then on. This will prevent its use.

In order to obtain the above functions, it is necessary to input data from the setting device 1 to the infrared key 2. Therefore, first, the person operating the setting device 1 inputs the password by operating the keyboard lb (step 501). Then, it is monitored whether this PIN number matches a preset number (step 302), and if it matches, it is monitored whether the A key for inputting the code number A manually is pressed. Step 5O3), input the numerical value of the code number A (
Step 304). Thereafter, it is monitored whether or not the return key is pressed (step 305), and when the key is pressed, the code number A is stored in the RAM 1f (step 5O).
6).

Next, use the setting key to enter the information stored in the setting machine into the infrared key 2 (if nothing is registered in the infrared key 2, set the code numbers A and B, working time and number of times). Step 507 ), if the key is not pressed, the process returns to step SO3. At this point, since the A key has already been operated, proceed to step SO8 and enter the code number B.
It monitors whether the B key for inputting is pressed or not, and inputs the numerical value of the code number B (step 509). Thereafter, it is monitored whether or not the return key is pressed (step 510), and when the key is pressed, the code number B is stored in the RAM 5 (step 5ll).

Next, the process returns to step SO7 to monitor whether or not the setting key has been pressed, and if the key has not been pressed, the process passes through steps SO3 and SO8 and returns to step 312.
-Proceed to S15 and store the number N of operations to be performed in the RAM 1f. Hereinafter, the time T that can be operated by the same steps as described above is set to RA by steps 316 to S19.
Store in M1f.

In this way, after setting the two types of code numbers A and B, the number of times N and the time T that the code numbers can be transmitted is completed, the infrared key 2 is set in the insertion slot 1a of the setting device 1.

Then, the setting machine 1 monitors whether the setting key is pressed (Step 5O7), and when the setting key is pressed, monitors whether the infrared key 2 is set (Step 5).
20).

Here, if the infrared key 2 is not set, an alarm is issued to notify that the infrared key 2 is to be set (step 321). In addition, when the infrared key 2 is set, the two types of code numbers A and B, which are the data stored in the RAM 1f of the setting device 1, the number of times N and the time T that the code number can be transmitted are The transmission of data A, B, N, is started (step 522), and
T is output (step 523).

On the other hand, when the infrared key 2 is set on the setting device 1, it is monitored whether the operation switch 2a is operated or not (step 5).
31) Since the operation switch 2a is not operated because it is data input to the infrared key 2, the process proceeds to step S32, where it is monitored whether or not the setting is to be started. The data A, B, N, and T are input into the RAM 2 f of the infrared key B (step 53).
3), and the data A, B, N, T are output for confirmation (step 534). And this data A,
B, N, and T are input into setting machine 1 (step 524),
Step 525: Monitor whether the data stored in the infrared key 2 matches the data output from the setting device 1.
), if they match, a confirmation signal is output (step 526), and a setting end alarm is activated (step 5).
27).

Then, when the confirmation signal from step S26 is output, the infrared key 2 confirms this (step 535).
), the code numbers A, B, the number of operations N, and the time T are stored (step 536), and a timer time based on the time T is started (step 537).

When the operator confirms this alarm and operates the end key, in step 328 the operator monitors whether or not the end key has been operated, so the process returns to the first step and the setting for the infrared key 2 is completed.

If the end key is not pressed, step 52 monitors whether the setting key to be operated when producing multiple infrared keys 2 with the same data input has been operated.
9) If the setting key is pressed, the process returns to step S20, and the same data as described above is stored in the new infrared key 2 inserted into the insertion hole 1a. If the setting key is not pressed, the process returns to step 32B and waits for the end key to be pressed.

The above is a description of the input from the setting device 1 to the infrared key 2. Next, the initial setting operation of the controlled object 3 will be explained with reference to FIGS. 6 and 7.

First, the cylinder 3d is unlocked using the mechanical key 3c to open the door, and the registration switch 30 is turned on. In this state, the infrared light emitter and light receivers 2c and 2d of the infrared key 2 are made to face the infrared light receiver and light emitters 3i and 3j of the controlled object 3, and the operation switch 2a is operated. Then, in the controlled body 3, it is monitored whether or not the switch 2a is turned on (step 531), so when the switch 2a is operated, the infrared emitter 2c is turned on.
The code number A stored in the RAM 2f is output as an infrared ray (step 341).
After sending out, it is monitored whether the time T and the number of times N are O (steps S42, 43), and if they are not O, the controller enters a state of waiting to receive an infrared signal from the controlled object 3 (steps S42, 43).
Step 544).

On the other hand, the controlled object 3 monitors whether or not the infrared receiver 31 has received the code number A (step 561), and when it detects that this data signal has been input, the cylinder 3d
It monitors whether the door is unlocked (step 562), and if it is unlocked, it monitors whether the door is opened (step 563). If the door is open,
It is monitored whether the registration switch 30 is switched to the registration mode (Step 564). First, the code number A from the infrared key 2 is read and stored in the RAM 2f as the code number A1 (Step 565). After storing this code number A, a random number signal is transmitted as an infrared signal from the infrared emitter 3j (step 566).
It enters a reception standby state (step 567).

On the other hand, since the infrared key 2 is in a reception standby state and monitors whether or not a signal is input (step 545), the random number signal transmitted from the controlled object 3 is received by the infrared receiver 2d. Then, it is determined whether the signal is a reset signal for resetting the number of operations and time described above (step 346), and if it is a random number signal, step S
47, random number calculation is performed (step 34B), and the result is transmitted via the infrared emitter 2C (step 54).
9) and enters the reception standby state again (step 550).
), the next signal input is monitored (step 551).

Then, the result of this random number calculation is received (step 86
8) The controlled object 3 performs back calculation of random numbers (step 569)
, calculate the code number B from the infrared key 2 and store it in RAM3m.
is stored as code number B1 (step S70).

After that, in order to confirm the memorized A1 and B1,
A repeat signal is transmitted (step 571), and a reception standby state is entered (step $72). The infrared key 2 that has received this repeat signal returns to step S41 from step S52 of monitoring whether the signal is for subtracting the number of times N to step S53 of monitoring whether the signal is a repeat signal, and returns to step S41 again. Since the number A is transmitted, the controlled object 3 should receive this code number A (Step 573)
, it is determined whether or not it matches the code number A1 stored last time (step 374), and if it is, it is stored in step 375), and then steps 376 to S69 similar to steps 366 to S69 described above are performed. As a result of performing the operation 878', it is determined whether or not the calculated code signal matches the code number B1 previously stored (step 579); - If the result is unsuccessful, it is memorized (step 580). . If they do not match in steps S75 and S80, an error is displayed (step 581) and an instruction is given to perform the above-described operation from the beginning. Then, when code number B is stored in step S80, a registration completion display is performed (step 582).
, it is monitored whether the registration switch 3o is returned to its original state (step 583), and when it is returned to its original state, it returns to the initial state.

The above is an explanation of the initial code number registration operation to the controlled object 3.Next, the infrared key 2 opens the door of the controlled object 3 and collects a fee or replenishes products such as cola. This will be explained with reference to FIGS. 6 and 7.

First, the operator's password is manually entered into the setting machine 1 using the numeric keypad 1b to put the setting machine 1 into a movable state.

Next, after manually inputting the number of times N and time T to use the infrared key 2, the infrared key 2 is inserted into the insertion slot la of the setting device 1, and the data of the number N and time T are stored in the RAM 2 by operating the registration switch. Store in f.

Note that since the code numbers A and B are stored in advance through the above-described operation, there is no need to register them here.

In this way, the user carries the infrared key 2 in which the code numbers A and B, the number of times N, and the time T are stored, goes near the controlled object 3, and selects the infrared emitter, receiver 2c, and receiver 2c of the infrared key 2.
2d approaches the infrared receiver and emitter 3it3j of the controlled object 3, and operates the operation switch 2a. This results in
The operations of steps S31 and 41 in FIG. 6 described above are performed, and code number A is output.

On the other hand, since the code number A is received in the controlled object 3, the process proceeds to step S62 in FIG. 7 described above. In this step S62, the cylinder 3d is in a locked state, so the process proceeds to step 384, and it is determined whether the code number is A or not. Here, since the code number A has been transmitted from the infrared key 2, a random number signal is transmitted (step 585). After receiving this random number signal, the infrared key 2 transmits the code number A and then proceeds to step 347, so it performs a random number calculation from the received random number signal (step 34B), and then transmits the result (step 54).
9). After transmitting the random number signal, the controlled object 3 calculates the random number and the code number B from the infrared key 2 using a certain predetermined function and stores it in the RAM 3m (step 587), and also enters a reception standby state. (step 588).

When the result of the random number calculation from the infrared key 2 is received, it is monitored whether the calculation result and the result stored in the RAM 3m match (step 589), and if they match, the actuator 3b is driven. Then, the cylinder 3d is unlocked (step 590). At the same time, a signal is sent to subtract one from the number of times N (step 59).
1) Upon receiving this, the infrared key 2 proceeds from step S52 to step 354, and subtracts one from the counter storing the line N.

On the other hand, step S8 in the operation of the controlled body 3 described above
If it is determined in step 4 that the code number is not A, a reset signal is sent to reset the number of operations N and time T stored in the RAM 2f of the infrared key 2 as an unauthorized unlocking operation. (Step 592)
. If this reset signal is determined to be a reset signal in step S46 in the operation of the infrared key 2, the number of times N and time T stored in the operation in the infrared key 2 are reset to 0, and subsequent data transmission is disabled. (step 555).

When the cylinder 3d is unlocked in the above-described operation, the operator collects the coins in the controlled body 3,
and replenish products. After the work is completed and the operator closes the door, the operator operates the operation switch 2a of the infrared key 2. As a result, the controlled object 3 performs step 3 described above.
The process proceeds to steps 61 to S63, and since the door is closed, a code number waiting state occurs in step S93. At this time, the code number A is sent by operating the operation switch 2a, so a locking signal is sent from step S93, and the actuator 3b is operated to lock the cylinder 3d (step 594).

Furthermore, while waiting for the signal in step 393, if the code number A is different from the predetermined code number, that is, if the key is wrong, the reset signal is sent out (step 595). Therefore, the number N and time T of the infrared key 2 are reset to 0 at the same time as the reset signal is sent from step S92.

Such an operation can be performed for the number of times N or the time T stored in the infrared key 2.

〔Effect of the invention〕

As described above, the present invention divides the code number into two,
One code number is not sent by an infrared key alone, and the one code number is sent in a specific form each time by a random number from a controlled object such as a vending machine, so it is extremely difficult to copy an infrared key. Therefore, unlocking due to unauthorized use by a third party can be prevented, and the number of times and time that can be used is input to the infrared key, and the number of times is subtracted each time one controlled object is unlocked. If an attempt is made to unlock a controlled object with a different code number, the number of times and time will be reset to 0, making further unlocking impossible, making it impossible for a third party to pick up the infrared key. Therefore, it is safe even if the infrared key is lost.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the overall configuration, Fig. 2 is a block diagram of the setting machine, Fig. 3 is a block diagram of the infrared key, Fig. 4 is a block diagram of the controlled object, and Fig. 5 is a block diagram of the setting machine. FIG. 6 is a flowchart showing the operation of the infrared key, and FIG. 7 is a flowchart showing the operation of the controlled object. 1... Setting machine, 2... Infrared key, 3... Controlled object, 3b... Actuator, 3d... Cylinder. Patent applicant: Kokusan Metal Industry Co., Ltd. Figure 2 Figure 3

Claims (3)

[Claims] (1) Send out the stored first code number, calculate the random number signal from the controlled object described later and the stored second code number using a certain predetermined function, and send out the result. an infrared key that receives the first code number from the infrared key, and sends out a random number signal when the first code number matches the stored first code number; and a second code that stores the random number; It is composed of a controlled object such as a vending machine that calculates as a function of the number, compares the calculation result from the infrared key with the result calculated by itself, and operates an actuator to open a door etc. when they match. An infrared locking device characterized by: (2) A code number for unlocking and the number of times the controlled object can be operated, which will be described later, are input, and each time the code number is sent and the controlled object is unlocked, the number of times is subtracted by one. , and an infrared key whose number of times is reset to 0 by a reset signal from the controlled object, and when the code number from the infrared key matches the code number stored by itself, the actuator is operated to unlock the cylinder lock. A controlled object such as a vending machine that sends a signal to lock the lock and subtract one from the number of times, and also sends a signal to reset the number of times to zero when the code numbers from the infrared key do not match. An infrared locking device featuring: (3) An infrared key into which a code number for unlocking and a time during which a controlled object, which will be described later, can be operated, is reset to 0 by a reset signal from the controlled object; When the code number from the infrared key matches the code number it stores, it operates the actuator to unlock the cylinder lock, and when the code number from the infrared key does not match, it sends a signal to reset the time to 0. 1. An infrared lock device comprising a controlled object such as a vending machine that sends out data.