JPH09296638A - Electric lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric lock device capable of simply controlling locking and unlocking and reducing power consumption on a reception side to the utmost in a lock device using a battery as power. SOLUTION: A human body sensor 10 of a pyroelectricity type infrared-ray sensor is provided to a receiving device 3, and when the human body sensor detects a person 29, a transistor 18 is turned ON to make a controlling circuit 16 and a receiving circuit 15 in a state of power, and they are in a state capable of being received. The controlling circuit 16 holds the transistor 18 in a state of ON with a self-latch circuit 21. When a signal transmitted from a transmitter 25 is received by the receiving circuit 15, the controlling circuit 16 refers the receiving signal to a discrimination code stored in advance, and when they coincide with each other, a solenoid 5 of an electric lock 4 is driven through a load driving circuit 17 to unlock, and it is automatically locked within 30 seconds after the unlocking.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery-powered electric lock device.

[0002]

In recent years, in the field of automobiles, there are many systems called wireless door locks that enable the doors of vehicles to be locked and unlocked by remote control using radio waves. These systems have come to be used, and there is an increasing need for such a system for residential use because of its convenience. However, in the case of construction in a house, particularly when a commercial power source is used as the power source, there is a problem that electric wiring and construction are complicated because construction on site is required.

Therefore, if the battery is used as a power source and the electric lock and the receiving circuit are attached to, for example, a door of a house, the above problem can be solved. However, in the case of using radio waves, there is a problem in that the power consumption is large and the life of the battery is very short because it is necessary to constantly energize the receiving circuit to keep it in a state where it can receive the electric wave.

A so-called ten-key system has been put into practical use as a household electric lock device using a battery as a power source. However, in the case of this, when locking and unlocking, it is always necessary to operate the key according to the personal identification number, and there is a problem that the operation is troublesome.

The present invention has been made in view of the above circumstances. An object of the present invention is to use a battery as a power source, the operation of locking and unlocking is easy, and the power consumption on the receiving side can be minimized. To provide an electric lock device.

[0006]

The electric lock device of the present invention comprises:
In order to achieve the above object, an electric lock for locking and unlocking a door in a building, a receiving circuit for receiving an airborne signal transmitted from a portable transmitter, and a receiving signal received by this receiving circuit are provided. A control circuit that drives the electric lock when it matches a preset specific code, a person sensor that detects a person by using a battery as a power source, and the power from the battery when the person sensor detects a person It is characterized in that it is provided with a power supply control means for supplying power to the receiving circuit.

In the above structure, when the human sensor detects a person, the electric power supply control means supplies the electric power from the battery to the receiving circuit so that the receiving circuit can receive the electric power. In this state, when the airborne signal is transmitted from the portable transmitter and the receiving circuit receives the signal, the control circuit collates the received signal received by the receiving circuit with a preset specific code, and it is Drive the electric lock when they match. As a result, the door can be locked and unlocked.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. First, in FIGS. 3 and 4, a receiving device 3 including a case 2 is attached to a front door 1 of a building, for example, a house. The case 2 is provided with an electric lock 4 for locking and unlocking the door 1. The electric lock 4 includes a solenoid 5 and a locking deadbolt 6 that is moved back and forth by the solenoid 5. The solenoid 5 is configured to move the dead bolt 6 to a locked position and an unlocked position by energization, and hold the dead bolt 6 at the moved position in a disconnected state.

Further, in the case 2, a wiring board 7 provided with a circuit to be described later, a battery 8 as a power source, and a receiving antenna 9 are arranged. A human sensor 10 including a pyroelectric infrared sensor is arranged on the wiring board 7. As shown in FIG. 1, the human sensor 10 is configured by connecting a pyroelectric element 11 and a CMOS circuit 12, and detects a person by detecting a temperature change due to infrared rays by the pyroelectric element 11. Is made. As shown in FIG. 4, the detection area 13 of the human sensor 10 is set to face the outdoor side of the door 1 and has a detection distance L of about 3 m or less and a detection angle of 90 degrees or more. Has been done. The power input terminal of the human sensor 10 is connected to the output terminal of the 5V regulator 14 connected to the battery 8.

The wiring board 7 is provided with a receiving circuit 15 connected to the antenna 9, a control circuit 16 including a microcomputer, and a load drive circuit 17 connected to the solenoid 5. Of these, the power supply input terminals of the receiving circuit 15 and the control circuit 16 are connected to the collector terminal of the transistor 18 that constitutes the power supply control means. The emitter terminal of this transistor 18 is 5
It is connected to the output terminal of the V regulator 14, and the base terminal is connected to the output terminal of the CMOS circuit 12 of the human sensor 10 via the resistor 19 and the diode 20 of the polarity shown.

A self-latch circuit 21 is connected between a common connection point of the resistor 19 and the diode 20 and the control circuit 16. The self-latch circuit 21 includes a diode 22 having the illustrated polarity, a transistor 23 having a collector terminal connected to the cathode terminal of the diode 22, and a resistor 24 connected between the base terminal of the transistor 23 and the control circuit 16. It is configured. The emitter terminal of the transistor 23 is grounded.

The power input terminal of the load drive circuit 17 is connected to the positive terminal of the battery 8. In addition, the receiving circuit 15
And the control circuit 16, and between the control circuit 16 and the load drive circuit 17 are electrically connected. Control circuit 16
Has a function of controlling the transistor 23 based on the output of the transistor 18 and a signal from the receiving circuit 15 and controlling the solenoid 5 of the electric lock 4 via the load driving circuit 17, as will be described later. .

On the other hand, the portable transmitter 25 includes a transmission switch 26, a transmission circuit 27, an antenna 28, and a battery (not shown) as a power source.
Based on the operation of, the control signal is transmitted via the antenna 28 by radio waves that are air propagation signals.

Next, the operation of the above structure will be described with reference to FIG. In the normal standby state, the human sensor 10 has 5
Electric power is constantly supplied via the V regulator 14. When the human sensor 10 is not detecting a person, the CM
The output of the OS circuit 12 is "high", and the transistor 18 as the power supply control means is in the off state. In this state, the receiving circuit 15 and the control circuit 16 are in the power-off state. Further, although the load driving circuit 17 is directly connected to the battery 8, no current flows except when driving the solenoid 5, which is a load. The electric lock 4 is in a locked state.

When the person 29 enters the detection area 13 of the human sensor 10 in this state, the pyroelectric element 11 in the human sensor 10 detects a change in infrared rays generated by the person 29.
Then, the output of the CMOS circuit 12 becomes "low", and the transistor 18 is turned on for about 0.5 seconds (by the timer in the CMOS circuit 12).

When the transistor 18 is turned on, electric power is supplied from the 5V regulator 14 to the control circuit 16 and the receiving circuit 15, and they are turned on.
Then, the control circuit 16 turns on the transistor 23 of the self-latch circuit 21 to turn on the transistor 18.
It keeps the ON state of the
Even when the output of the circuit 12 becomes “high”, the energized state of the control circuit 16 and the receiving circuit 15 is maintained. When the receiving circuit 15 is energized, it becomes ready for reception.

The control circuit 16 holds the transistor 18 in the ON state by the self-latch circuit 21 for, for example, 30 seconds after the human sensor 10 detects a person (after the control circuit 16 itself is energized). Then, the energized states of the control circuit 16 and the receiving circuit 15 are held, but if no receiving signal is input from the receiving circuit 15 even after 30 seconds, the transistor 23 is turned off and the transistor 18 is turned off. The control circuit 16 and the receiving circuit 15 are turned off.

During 30 seconds after the human sensor 10 detects a person, a control signal is transmitted from the antenna 28 based on the operation of the transmission switch 26 of the transmitter 25, and the control signal is transmitted to the receiving device 3. Antenna 9 and receiving circuit 1
When the signal is received via 5, the received signal is sent to the control circuit 16. In the control circuit 16, the received signal is collated with an identification code which is a preset specific code, and when the code coincides, the solenoid 5 is energized via the load drive circuit 17 and the dead bolt 6 is turned on. The electric lock 4 is unlocked by moving it from the locked position to the unlocked position.

Then, 30 seconds after the unlocking, the control circuit 16 energizes the solenoid 5 to move the dead bolt 6 from the unlocked position to the locked position, thereby causing the electric lock 4 to move.
Is automatically locked, and the transistor 23 of the self-latch circuit 21 is turned off to turn off the transistor 18, thereby returning to the normal standby state.

According to the above-described embodiment, in the normal standby state, only the human sensor 10 is energized, and the control circuit 16 and the receiving circuit 15 are in the power-off state. Compared to the case of always energized, the power consumption can be greatly reduced and the service life of the battery 8 can be extended. In this case, in particular, the pyroelectric infrared sensor used as the human sensor 10 has high impedance, consumes less power, and uses the CMOS circuit 12 as a logic circuit.
Since the current consumption is about 20 μA, the power consumption can be further reduced.

Further, since the electric lock 4 can be remotely operated by using the transmitter 25, the operation of locking and unlocking is easier than in the case of the so-called ten-key system.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. Instead of automatically locking the electric lock 4 after unlocking, the electric lock 4 is operated based on the operation of the transmission switch 26 of the transmitter 25.
It can also be controlled such that if is locked, it is unlocked, and if it is unlocked, it is locked. Two transmission switches 26 may be provided, one for locking and one for unlocking. In the electric lock 4, a motor may be used instead of the solenoid 5.

It is also possible to provide a switch interlocking with the knob 1a of the door 1 (see FIG. 4), and to perform the following control based on this switch. That is, if the knob 1a is operated within 30 seconds after unlocking by the transmitter 25, the transistor 18 is turned off at that time. In this case, it is not automatically locked.

Further, it is preferable that the voltage of the battery 8 is detected and the decrease in the voltage is notified by a notification means such as a light emitting diode. Further, by providing a solar battery with the battery 8, the life of the battery 8 can be further improved. It becomes possible to make it longer.

After the human sensor 10 detects a person, the receiving circuit 15 intermittently energizes the electric power instead of continuously energizing the electric power, so that the power consumption can be further reduced.

[0026]

According to the first aspect of the present invention, the human sensor is provided, and when the human sensor detects a person, the receiving circuit is energized so that the person can receive the signal. The power consumption on the receiving side can be minimized and the battery life can be extended. Moreover, since the electric lock can be remotely controlled using the transmitter, the locking and unlocking operations can be easily performed.

According to the second aspect of the present invention, by using the pyroelectric infrared sensor as the human sensor, the power consumption on the receiving side can be further reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention and showing an overall electrical configuration.

FIG. 2 is a time chart showing the operation or state of each part

FIG. 3 is a perspective view showing each part of the receiving device in a perspective manner.

FIG. 4 is a perspective view of a door portion.

[Explanation of symbols]

1 is a door, 3 is a receiving device, 4 is an electric lock, 5 is a solenoid, 8 is a battery, 10 is a human sensor (pyroelectric infrared sensor), 15 is a receiving circuit, 16 is a control circuit, 18 is a transistor (power supply). Control means), 21 is a self-latch circuit,
25 is a transmitter and 29 is a person.

Claims (2)

[Claims] 1. An electric lock for locking and unlocking a door in a building, a receiving circuit for receiving an airborne signal transmitted from a portable transmitter, and a receiving signal received by this receiving circuit are preset. A control circuit that drives the electric lock when it matches a specific code, a person sensor that detects a person by using a battery as a power source, and a power supply from the battery to the receiving circuit when the person sensor detects a person An electric lock device, comprising: 2. The electric lock device according to claim 1, wherein the human sensor is a pyroelectric infrared sensor.