JPH03144085A - Remote control master key system - Google Patents

Abstract

PURPOSE:To provide a master key system operated by means of electromagnetic waves serving as a medium by a method wherein electromagnetic waves emitted from a master key and a subkey and containing respective key codes are received by a plurality of look devices, and unlocking is effected on block and individually. CONSTITUTION:A master key to generate electromagnetic waves containing a master key cord and a subkey to generate electromagnetic waves containing a subkey code are provided. A detecting means for the two electromagnetic waves, a memory means, and a comparing means are mounted to a plurality of lock devices. Electromagnetic waves are emitted to a specified lock device from the corresponding subkey, and the lock device is unlocked by using a comparing control means. Further, electromagnetic waves are emitted to other lock devices from the master key, and the lock devices are unlocked on block by using the comparing control means. This constitution effects remote control of the lock device by using electromagnetic waves, e.g. infrared rays.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a remote control locking system, in particular, a master key is used to remotely operate a plurality of locking devices, while subkeys are used to remotely operate a specific door. Relating to a remote master key system that operates a locking device.

For example, as shown in Japanese Patent Publication No. 63-11509, a remote control lock control device that unlocks a lock device using infrared rays containing a predetermined code number is known. This remote control lock control device includes a transmitting device including a manually operated switch, and receives infrared rays emitted from the transmitting device when the switch is pressed, and detects a predetermined code number included in the infrared rays. and a receiving device that supplies an unlock signal to the lock device. This remote control opening control device can unlock the lock device by emitting infrared rays from a position approximately 1 m or more away from the sensor section of the light receiving device. Therefore, there is an advantage that the unlocking operation by pressing the switch of the transmitting device can be simplified and accelerated.

On the other hand, master key systems are used in hotels or coin lockers. The master key system is a system in which multiple lock devices can be unlocked using subkeys with different codes, and all lock devices can be unlocked with a master key having one code. like this,
In mechanical tumbler locks, a master key system is constructed by forming multiple shear lines on the tumbler or giving the disk a specific shape.

However, a master key system that can be applied to a remote-controlled lock device that remotely controls the lock device using electromagnetic waves such as radio waves or infrared rays has not yet been proposed.
Recently, in the hospitality industry such as hotels that manage a large number of lock devices, there has been a strong demand for lock devices that use infrared rays. Therefore, there is an urgent need to develop a master key system that can be applied to a remote control lock device that remotely controls the lock device using electromagnetic waves.

SUMMARY OF THE INVENTION Therefore, the present invention solves the above problems and provides a remote control master key system that can unlock all lock devices with one master key when the corresponding lock devices are activated by remote control using different subkeys. With the goal.

A remote control master key system according to the present invention includes a master key that generates electromagnetic waves including a master key code, a subkey that generates electromagnetic waves including a subkey code,
It consists of a plurality of locking devices arranged at different positions.

Each lock device includes a receiving means for receiving electromagnetic waves including a master key code and a sub-key code, and a master key code storage means for storing the same master key code.
A subkey code storage means for storing different subkey codes and a signal included in the electromagnetic waves received by the receiving means is compared with the master key code stored in the master key code storage means and the subkey code stored in the subkey code storage means. , and comparison means that generates an unlocking signal when these match. The comparison means of each lock device includes a master key code comparison means and a sub key code comparison means.

When an electromagnetic wave is emitted from a subkey corresponding to one of the plurality of locking devices, the locking device receives the emitted electromagnetic wave, and the comparison means compares the received electromagnetic wave with the subkey code stored in the subkey code storage means. The unlock signal is generated by comparing the received signal with the unlocked signal. However, even if electromagnetic waves are generated from an incompatible subkey, the locking device will not be unlocked. When the locking device generates electromagnetic waves from the master key, the locking device receives the electromagnetic waves, and the comparison means compares the received signal with the master key code stored in the master key code storage means to generate an unlocking signal. . It is possible to unlock other lock devices by emitting electromagnetic waves containing the master key code from the master key.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An infrared remote control master key code 11 according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

First, FIG. 1 shows a circuit diagram of a transmitting device. The remote control transmitter l is a one-chip microcomputer (CP
4B control circuit 10 consisting of U) and the transmission control circuit 10
ROM connected to (, Read On], y Me
26, a switch 12 having one end connected to the input port 1 of the transmission control circuit 10 via a capacitor 11, and a power supply connected in parallel between the other end of the switch 12 and the ground. Smoothing capacitor 14
, a chattering prevention capacitor 15 connected between one end of the switch 12 and the ground, and a capacitor 1↓
It has a pulse shaping resistor L6 and a diode 17 connected in parallel between one end and the ground, a base connected to the output port 01 of the transmission control circuit IO via a resistor 18, and an emitter connected to the ROM 26. A transistor 19, a diode 20 and a resistor 21 for emitting infrared radiation, which are electromagnetic waves, are connected in series between the collector of the transistor 19 and the ground, and are connected in series between the output port 02 of the transmission control circuit 10 and the ROM 26. resistance 2
2 and a light emitting diode 23, a resistor 24 connected between the other end of the capacitor 11 and the ground, and an oscillation resistor 25 connected to the input port I2 of the oscillation control circuit 10. The capacitor 11 is connected to the ROM 26, and the other end of the switch 12 is connected to the output port O3 of the transmission control circuit 10.

The capacitor 15 is connected to the manual boat I7 of the transmission control circuit 10. When using the remote control transmitting device 1 as a master key, the master key code is stored in the ROM 26, and when using it as a sub key, the master key code is stored in the ROM 2.
A subkey code is stored in 6.

In the above configuration, when the switch 12 is turned on manually, the voltage of the resistor 24 increases, and a reset pulse is applied to the input port (2) via the capacitor 11 and the resistor 16. Therefore, the transmission control circuit 10 is operated according to a predetermined sequence.

For example, when a reset pulse is applied to the input port I, the master key code or sub key code is read from the ROM 26, and corresponding to the read code, the 1 transmission control circuit 10 is A code signal is generated that includes a second leader code followed by a specific code signal. The transistor ↓9 repeats on and off a predetermined number of times according to the output from the output port O. The on/off operation of transistor 19 corresponds to an infrared signal indicating a predetermined code symbol. By turning on and off the transistor L9, the diode 20 repeatedly blinks in an operation to display a predetermined code signal. Since the blinking of the diode 20 cannot be discerned with the naked eye, the light emitting diode 23, which generates visible light, lights up for a short time when the diode 20 is activated. The master key code and subkey code generally include a leader code and a fixed code following the leader code. The fixed code has a structure in which a plurality of pulse trains forming a key code are arranged in time series. At the point when the transistor 19 is turned off, an output is generated from the output port 02 and the light emitting diode 23 is lit for 0.05 seconds. However, when a pulse train including a large number of pulses is emitted from the diode 20, the light emitting diode 23 repeats on and off, but visually the light emitting diode 23 appears to be continuously lit.

FIG. 2 shows a circuit diagram of a receiving device 2 constituting a locking device installed at different positions. 4, and a lock control circuit 42 operated by the output of the reception control circuit 41. The sensor circuit 40 includes a one-chip light receiving circuit 50 and a light receiving circuit 5.
It has an amplifier circuit 51 that amplifies the infrared signal received at 0 and supplies it to the reception control circuit 41. Amplification circuit 51 has two transistors 52 and 53. The positive line 54 of the sensor circuit 40 is connected to the output port 01 of the reception control circuit 41, and the negative line 55 of the sensor circuit 40 is grounded. Smoothing capacitors 56 and 57 are connected in parallel to the positive line 54 and the negative line 55. Further, the positive line 54 is connected to the output port 02 of the reception control circuit 41 via a display light emitting diode 58 and a resistor 59.

The emitter of the transistor 52 is connected to the positive line 54°, the base is connected to the light receiving circuit 50, and the collector is connected to the base of the transistor 53. The emitter and collector of the transistor 53 are connected to the input port I□ of the reception control circuit 41 via the diode 60, and to the base of the transistor 62 via the diode 6↓. The emitter of the transistor 62 is connected to the power supply, and the collector is connected to the input port I7 of the reception control circuit 4↓ via the reset circuit 63. The reset circuit 63 includes a resistor 64 connected between the collector of the transistor 62 and the ground, a capacitor 65 connected between the collector of the transistor 62 and the input port, and an input port
It has a resistor 66 and a diode 67 connected in parallel between 7 and ground.

The reception control circuit 41 is a CPU composed of a one-chip microcomputer. A ROM 68 is connected to input ports I2 to I2 of the reception control circuit 41. ROM68
A specific subkey code and master keycode number are stored in . Output port O3 of reception control circuit 41
and ○ indicate transistors 70 and 7 as driver circuits.
1 are connected through resistors 72 and 73, respectively.

The collector of the transistor 70 is connected to the coil 75 of the relay 74.
The emitter is connected to the power supply through the emitter and grounded. Similarly, the collector of transistor 71 is connected to the power supply via coil 77 of relay 76, and the emitter is grounded.

Among the three contacts of relays 74 and 76, contacts 74a and 76
a is connected to a power source.

Contacts 74b and 76b are grounded. Contacts 74c and 760
are connected to both terminals of a motor 80 that drives a locking device on the driver's seat side. The motor 80 has a controller 8 for preventing back electromotive force.
1 is connected. Input ports I and 6 of the reception control circuit 41 are connected to a state detection device 82 that detects the locked state and unlocked state of the locking device. The state detection device 82 has a switch (not shown), and this switch is switched when the locking device is operated to lock or unlock. Output port ◯ is connected to a plurality of motors 83 that drive lock devices other than those on the driver's seat side. The motor 80 constitutes a 1-alloc device, and the plurality of motors 83 constitute a power window device and a blower device.

Further, an ignition switch 84 is connected to the input port I of the reception control circuit 41. An alarm device 85 is connected to the output port O4 of the reception control circuit 41.

In the above configuration, the receiving device 2 is operated according to the operation sequence shown in FIG. The infrared rays generated from the infrared ray emitting diode 20 when the switch 12 of the remote control transmitter 1 is activated are transmitted through step 101 in FIG.
The light is received by the light receiving circuit 50. That is, the process proceeds from the start of step OO to step 10↓, where the light receiving circuit 50 determines whether or not an infrared signal has been received. When the light receiving circuit 50 receives an infrared signal, the signal generated by the light receiving circuit 50 is transmitted to the reception control circuit 41 via the amplifier circuit 51.
is supplied to the input port. At the same time, when the amplifier circuit 51 is turned on, the transistor 62 is turned on. Therefore, the reception control circuit 4
A trigger signal is applied to input port r7 of No. 1, and reception control circuit 41 is activated. Therefore, the reception control circuit 41 is switched from the standby mode to the operation mode, and the storage means stores the light reception signal supplied to the input port I8.

At the same time or after this, the reception control circuit 41
The master key code and sub key code stored in
ory) or the like.

Here, the comparison means provided in the reception control circuit 41 compares the code confirmation included in the signal from the remote control transmitter 1 supplied through the light reception circuit 50 and the subkey code stored in the ROM 68. (Step 10
3). If the received code signal 8- and the read code signal do not match, the process proceeds to step 104, where the received code signal and the master key code stored in the RAM 68 are compared. When the received code signal and the master key code do not match, the process proceeds to step 105, where the reception control circuit 41 is switched from the operating mode to the standby mode, and then proceeds to stop in step 106.

When the received code signal matches the sub-key code stored in step 103 or matches the master key code stored in step 104, the output of the state detection device 82 locks or unlocks the lock y:i in step 107. A condition is detected. Step 1
When the state detection device r1182 detects the locked state in step 107, it generates an unlock signal from the output port 04 of the reception control circuit 41 (step 108) and turns on the 1-range staff 1. Therefore, the motor 80 is operated in the first direction in reverse (step 127). The door lock device is operated in the unlock direction.

When the driver's door is unlocked in step ↓07, one output is generated from the advance output port 06, and the alarm 143 is activated once. Next, step 109
A lock signal is generated from the output port 03 of the reception control circuit 41 to turn on the transistor 70. Therefore, the motor 80 serving as a door locking device is operated in the locking direction. In this way, when the signal received by the sensor circuit 40 matches a predetermined code signal, an output is generated from the output port 03 or 04.

The reception control circuit 4 shown in FIG. 2 can be constructed by discrete circuits instead of program control. For example, in the reception control "1st path 41, the sensor circuit 4
o and a subkey code storage circuit 121 (
subkey code storage means) and reader code detection circuit 1
A master key code storage circuit 122 (master key code storage means) that outputs a signal including a master key code in response to a trigger signal of 20, and a reader code detection circuit 12.
0 trigger signal, the code signal received by the sensor circuit 40 and the signal including the subkey code output from the subkey code storage circuit 121 are compared, and when they match, the subkey code comparator 123 (subkey code comparison) generates an output. Compares the code signal received by the sensor circuit 40 with the trigger signal of the reader code detection circuit 120 and the signal containing the master key code output from the master key code storage circuit 122, and generates an output when these match. Master key code comparator 123
(master key code comparison means), an OR gate 125 that provides an output to the one-shot multivibrator 126 when either the output of the sub-key code comparator 123 or the master key code comparator 124 is generated, and the one-shot multivibrator AND gates 128 and 12 each having one input terminal receiving the output of 126
9. A switch constituting the state detection device 82 is connected to the other input terminals of the AND gates 128 and 129. The output terminals of AND gates 128 and 129 constitute output ports O1 and 04, respectively. Therefore,
AND gates 128 and 129 selectively generate a lock signal 9 or an unlock signal, respectively, corresponding to the on state or off state of the switch constituting the state detection device 82 when the output of the one-shot multivibrator 126 is generated. do.

Further modifications to the above embodiments of the invention are possible.

For example, although infrared rays are used to communicate between the remote control transmitting device 1 and the receiving device 2, any number of electromagnetic waves other than infrared rays, such as normal visible light and radio waves, can be used. Also,
In the above-described embodiment, the present invention is applied to a locking device for an automobile, but it is clear that the invention can also be used in other fields such as locking devices for buildings other than automobiles, such as controlling the number of people or opening/closing.

A1 According to the present invention, there is an effect that a master key system can be obtained which can control a locking device by remote control using electromagnetic waves.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a transmitting device used in the remote control device according to the present invention, FIG. 2 is a circuit diagram of a receiving device used in the remote control device according to the present invention, and FIG. 3 is a circuit diagram of the receiving device used in the remote control device according to the present invention. A flowchart showing the operation, and FIG. 4 is a circuit diagram showing another embodiment of the reception control circuit. 166 transmitting device (master key or subkey), 20.
Receiving device (lock device), 10. , transmission control circuit, 12
0. switch, 130. Power supply, 40 degrees, Sensor circuit (receiving means), 12L, Subkey code storage circuit (subkey code storage means), 1221. Master key code storage circuit (master key code storage means), 123. , subkey code comparator (subkey code comparison means), 12
4. . Master key code comparator (master key code comparison means). Figure 1 Figure

Claims (2)

[Claims] (1) Consisting of a master key that generates electromagnetic waves containing a master key code, a subkey that generates electromagnetic waves containing a subkey code, and multiple locking devices arranged at different positions, each locking device has a master key code and A receiving means for receiving electromagnetic waves including a sub-key code, a master key-code storing means for storing the same master key code, a sub-key code storing means for storing a different sub-key code for each lock device, and an electromagnetic wave received by the receiving means. Comparing means compares the signal contained in the master key code stored in the master key code storage means and the sub key code stored in the sub key code storage means and generates an unlocking signal when these match. A remote control master key system. (2) Claim (2) wherein the comparison means of each locking device comprises a master key code comparison means and a sub key code comparison means (
The remote control master key system described in 1).