JP4145015B2 - Electric lock relay device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a relay device for an electric lock.
[0002]
[Prior art]
In general, a lock system using an electric lock includes an electric lock housed in a door and a control device that is installed in a living room, for example, and transmits an operation signal to the electric lock body.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional example, the control signal transmitted and received between the control device and the electric lock varies depending on the manufacturer, and either the control device or the electric lock is exchanged, or the electric lock is replaced by another control means. When trying to perform remote control, there is a problem that it is inferior in expandability and flexibility because it is necessary to select a signal having the same signal format.
[0004]
The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide an electric lock relay device that can be connected to and used with an electric lock regardless of the type of the control device or the extended control device. .
[0005]
[Means for Solving the Problems]
When the electric lock 2 is controlled by the control device 1, whether the electric lock 2 is locked or unlocked in the control device 1 or whether the door is opened or closed (hereinafter referred to as "lock state"). It is necessary to know, and the detection of the lock state in the control device 1 is performed by outputting an inquiry signal from the control device 1 side to the electric lock 2 side and identifying the return value.
[0006]
However, the control signals for the control device 1 and the electric lock 2 are not standardized, and in particular, a technology for connecting the control device 1 with two wires in consideration of wiring workability is adopted. As a result, the types are extremely diverse. In other words, when the control device 1 sends power to the electric lock 2 to the electric lock 2 and exchanges the lock state signal from the electric lock 2 side over two wires, the actuator in the electric lock 2 In general, since the drive signal from the control device 1 is given as a DC signal because it is driven by a DC power source having a predetermined voltage, the difference due to the difference in the control device 1 is small, but the output signal form of the inquiry signal is large. There is a difference, and this difference causes the problems described above.
[0007]
On the other hand, no matter what signal form is used to identify the lock state, the identification target is the electric lock 2 or a switch that is turned ON / OFF by the state transition of the door. When the inquiry signal transmitted by the control device 1 is returned to the control device 1 as it is via the switch, the control device 1 can determine the lock state based on the inquiry signal.
[0008]
The present invention has been made based on the above recognition, and the drive signal generation unit 3 converts the drive signal (power) output from the relay device into the drive signal of the electric lock 2 and converts it into the electric lock 2. Notification is made and the electric lock 2 is driven. A power supply circuit for the electric lock 2 can be incorporated in the drive signal generation unit 3.
[0009]
The inquiry signal output from the control device 1 is directly returned to the control device 1 via the relay switch 4 that is switched based on the lock side state signal output from the electric lock 2, and the control device 1 determines the state of the relay switch 4. The lock state is identified by. By using the mechanical relay switch 4 without using an electronic switch such as a transistor, no change occurs in the nature and state of the inquiry signal. Even in this case, since the identification in the control device 1 can be guaranteed, a lock system with a simple structure and high reliability can be constructed.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the lock system includes a control device 1 and an electric lock 2 accommodated in a door door. The control device 1 includes a power supply unit 6a for the electric lock 2 and a lock / unlock operation button 6b. When the lock / unlock button 6b is operated, a drive signal (s10) for the electric lock 2 is generated. The drive signal (s10) is sent to the drive signal output terminal 1a of the control device 1. The illustrated control device 1 connects the electric lock 2 and a controller 6 installed in a living room or the like with two energizing wires to facilitate wiring work. The control device 1 is connected to the controller 6. In addition, a two-wire conversion adapter 7 is provided for branching a signal output from the controller 6 via the energization line into a signal line and a power supply line.
[0011]
The control device 1 also includes an inquiry signal input / output terminal 1b for detecting the state of the electric lock 2, and sends an inquiry signal (s11) to the electric lock 2 side via the inquiry signal input / output terminal 1b. Then, opening / closing of the detection switches 2a, 2b on the electric lock 2 side is detected. In this embodiment, the control device 1 can detect the unlocked state of the electric lock 2 and the open / closed state of the door door, and the opening LED 6c and the unlocking LED 6d are turned on based on the detection results. Or turn it off.
[0012]
Various methods for detecting the state of the electric lock 2 side have been proposed. For example, a certain type of device has a resonance circuit opened and closed by the detection switches 2a and 2b on the electric lock 2 side on the secondary side. The temporary side of the provided lock-side balanced transformer and the secondary side of the detection balanced transformer constitute a closed loop, and the detection-side balanced transformer is detected as a current value on the primary side when driven at the resonance frequency with respect to the resonance circuit. That is, when the detection switch is closed, the resonance circuit resonates with the frequency signal. As a result, the output impedance of the balanced transformer on the control device 1 side becomes low, while the detection switches 2a and 2b are open. As a result, the current value on the primary side of the detection-side balanced transformer differs, and the state of the detection switch can be detected by the change in the current value.
[0013]
In addition, a certain type of device transmits a detection current to the electric lock 2 side at a predetermined timing, and determines whether the detection switches 2a and 2b are disconnected or connected.
[0014]
On the other hand, the electric lock 2 includes an actuator 8 for driving a deadlock (not shown), and includes locking / unlocking signal input terminals 2d and 2e and a locking / unlocking state signal output terminal in addition to the power supply terminal 2c. When the unlocking drive signal (s10) is input to the unlocking signal input terminal 2e in a state where power (DC power in this embodiment) is supplied to the power supply terminal 2c, the control unit 9 of the electric lock 2 operates as an actuator. The polarity is set so that the motor No. 8 rotates in a direction to immerse the deadlock, and power is supplied to the motor 8 to drive the dead bolt in the immersive direction. When the lock driving signal (s10) is input to the lock signal input terminal 2d, the controller 9 reverses the polarity and drives the dead bolt in the protruding direction.
[0015]
In the illustrated example, the case where the locking / unlocking signal input terminals 2d and 2e are arranged separately is shown. However, they may be configured to be identified by the control unit 9 in common. Further, an electromagnetic solenoid or the like can be used as the actuator 8.
[0016]
Further, the electric lock 2 includes a current deadbolt state, that is, a lock state detection switch 2a indicating whether the electric lock 2 is currently locked or unlocked, and a door state detection switch 2b indicating the door door open state. With. In this embodiment in which two dead bolts are driven by separate motors 8, 8, the lock state detection switch 2 a is arranged for each motor 8.
[0017]
The lock state signals indicated by these detection switches 2a and 2b can be acquired as a response signal to a detection signal from the control unit 9 of the electric lock 2 or a relay device described later. Further, in this embodiment configured to notify the control unit 9 of the locking / unlocking state of the entire electric lock 2, the control unit 9 on the electric lock 2 side includes two pieces provided corresponding to each motor 8. The response signals from the lock state detection switches 2a and 2a are logically calculated, and if any of the lock state detection switches 2a and 2a is in the lock state, a lock state signal is returned.
[0018]
The relay device A interposed between the control device 1 and the electric lock 2 is operated by a commercial AC power source and includes a power supply circuit 10 that supplies power to the electric lock 2 and a control unit 11. The control unit 11 includes a microcomputer 11a, and includes a reset circuit 11b and a clock supply circuit 11c. Further, the power supply circuit 10 performs AD conversion and step-down on the commercial AC power supply, outputs it to the power supply terminal 12, and supplies power to the electric lock 2 via the power supply terminal 12. In this embodiment, the electric lock 2 has an internal power supply 2f such as a battery, and can be operated with the internal power supply 2f by operating a power supply switching unit (not shown).
[0019]
In addition, the relay device A includes a drive signal input unit 13 connected to the drive signal output terminal 1a on the control device 1 side. Since the drive power of the actuator 8 whose polarity is inverted according to the type of the locking / unlocking signal is normally output to the drive signal output terminal 1a of the control device 1, the drive signal input unit 13 converts this into a TTL level signal. The data is converted and supplied to the control unit 11. When there is an input to the drive signal input unit 13, the control unit 11 generates a lock request signal or an unlock request signal to generate a lock request signal output unit 14 or an unlock request signal output unit 15 of the drive signal generation unit 3. And the motor 8 of the electric lock 2 is driven.
[0020]
Further, the relay device A includes a locking / unlocking state signal input unit 16 and a door state signal input unit 17. As described above, the state signal input units 16 and 17 receive the detection results of ON / OFF of the state detection switches 2a and 2b of the electric lock 2 and output them to the control unit 11. Upon receiving these detection signals, the control unit 11 outputs a status signal to the status switching output ports p1 and p2 connected to the lock side status signal generation unit 5, as shown in FIG.
[0021]
As shown in FIG. 2, the lock side state signal generation unit 5 includes a pair of control transistors 5a and 5a whose bases are connected to the mechanical relay switch 4 and the state switching output ports p1 and p2 of the control unit 11, respectively. Consists of. The state switching output ports p1 and p2 of the control unit 11 are output to the state switching output ports p1 and p2, for example, when the lock state detection switch 2a is ON, the locking state switching output port p1 is “H” and the unlocking state switching output. “H” is output exclusively to one side and “L” is output to the other side so that the port p1 ′ becomes “L”, and the collector current selectively flows to one of the control transistors 5a. Set the relay switch to the corresponding position.
[0022]
This state is equivalent to the state in which the state detection switches 2a and 2b of the electric lock 2 are directly connected to the inquiry signal output terminal 1b of the control device 1 when viewed from the control device 1. Even if the detection method of type and method is taken, the control device 1 can detect the lock side state based on the inquiry signal s11 output from the control unit 11.
[0023]
Furthermore, the relay device A includes a mode setting unit 18, a door state display unit 19, and a lock state display unit 20. The door state display unit 19 and the lock state display unit 20 are provided mainly for the convenience of installation work, and the state detection switches 2a and 2b accurately detect the state during construction by displaying the state with LEDs or the like. This can be confirmed without going to the place where the controller 6 is installed. For example, when the drive signal (s10) output from the control unit 11 does not match the operation of the electric lock 2, the mode setting unit 18 outputs the unlock drive signal (s10) from the control unit 11. However, when the electric lock 2 performs the locking operation, the electric lock 2 is provided to match the operation of the electric lock 2 with the drive signal (s10), and is configured by a polarity inversion circuit.
[0024]
The relay apparatus configured as described above operates as follows by a program stored in a ROM (not shown). As shown in FIG. 3, first, after the initial setting is made in the power-on state, the lock state monitoring routine R1 is executed. The lock state monitoring routine R1 is performed by monitoring a change in the lock / unlock state, and is performed by sequentially executing the lock / unlock state detection step S1 and the door open / close state detection step S2. In the locking / unlocking state detection step S1, when the locking / unlocking state is changed, that is, when the lock state detection switch 2a is switched and the input to the locking / unlocking state signal input unit 16 is changed, the control unit 11 determines whether or not it is in the locking state. Execute. In this step, when the input value of the lock / unlock state signal input unit 16 changes, the control unit 11 outputs a confirmation signal to the electric lock 2 again via the lock / unlock state signal input unit 16 to confirm the lock / unlock state. In this method, the bit corresponding to the lock state stored in the memory means (not shown) can be inverted.
[0025]
When the locked state is detected by the above step, as described above, a state signal is output to the unlocked / unlocked state signal generation unit 5 and “locking” data is set in the lock state display unit 20, For example, the LED of the lock state display unit 20 is turned on. In the unlocked state, an unlocked state signal is output, “unlocked” data is set in the locked state display unit 20, and the LED of the locked state display unit 20 is turned off.
[0026]
The door opening / closing state detection step S2 is executed in the same step as the above-described locking / unlocking state detection step S1, and the signal of either “closed state” or “opened state” is sent to the door depending on the state of the door door opening / closing detection switch 2b. The signal is output to the open / close state signal generation unit 5, “open” or “closed” data is set in the door state display unit 19, and the LED of the door display unit 19 is turned on / off.
[0027]
On the other hand, when the drive signal (s10) is input from the control device 1 side as shown in FIG. 4, the control unit 11 executes the lock operation step S3. In the lock operation step S3, first, it is determined whether or not the input drive signal (s10) is a lock request signal. If the drive signal (s10) is a lock request signal, the lock request signal is output to the lock request signal output unit 14 to generate an electric signal. The motor 8 of the lock 2 is rotationally driven in the locking direction. When the request signal is not a lock request signal, the unlock request signal is output to the unlock request signal output unit 15.
[0028]
Further, the lock operation step S3 includes a timing routine R2. The timing routine R2 is executed simultaneously with the output of the request signal to the locking / unlocking request signal output units 14, 15, and is performed by first setting the built-in timer to a predetermined time and then detecting the locking / unlocking state at a predetermined timing. When the desired lock state is entered within the set time, control exits from the timing routine R2 and control is passed to the lock state monitoring routine R1. If the lock state does not shift within a predetermined time, the output to the electric lock 2 is stopped to prevent overload to the motor 8, and the time-out routine R2 is exited. In this case, since the identification in the control unit 11 of the signal from the control device 1 is reversed, or the failure of the electric lock 2 can be considered, an error signal may be output.
[0029]
【The invention's effect】
As is apparent from the above description, according to the present invention, the electric lock can be controlled by an appropriate control device or expansion control device without considering the signal specifications.
[Brief description of the drawings]
FIG. 1 is a block diagram of a locking system to which the present invention is applied.
FIG. 2 is a block diagram illustrating a lock state signal generation unit.
FIG. 3 is a flowchart showing a lock state monitoring routine.
FIG. 4 is a flowchart showing a lock operation step.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Control apparatus 2 Electric lock 3 Drive signal generation part 4 Relay switch 5 Lock side state signal generation part

Claims (1)

An electric lock relay device that relays the operation signal from the control device and transmits the operation signal to the electric lock,
A drive signal generation unit that generates a drive signal of the electric lock based on a drive signal from the control device;
A lock side state signal generation unit including a relay switch that connects and disconnects a signal line connected to an output unit of the lock side state inquiry signal provided in the control device based on the lock side state signal output from the electric lock; Have
An electric lock relay device capable of detecting a state of the electric lock side based on a conduction state of a signal line of the inquiry signal .

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