JP3927269B2 - Lock confirmation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a locking confirmation device for confirming locking of a building at a remote place.
[0002]
[Prior art]
For example, in a building such as a building containing a plurality of tenants, various people enter and exit through a common entrance. And in a building with this kind of common doorway, the locked state of the common doorway is monitored remotely, for example, so that the common doorway of the fence that is originally locked is unlocked and people do not inadvertently enter. The lock confirmation device shown in FIGS. 4 and 5 is employed for crime prevention and security.
[0003]
The lock confirmation device shown in FIG. 4 has the most specifications, and detects the protrusion of the ridge by a mechanical switch. The mechanical switch 51 is provided in a door frame 54 formed with a receiving hole 53 into which the flange 52 is inserted, and an actuator 55 that moves when the flange 52 protrudes, and a micro switch that turns on and off as the actuator 55 moves. 56. A lamp 57 as a display device disposed in a remote place (for example, a management room or a security center) is connected to the micro switch 56 via a power source 58.
[0004]
In this locking confirmation device, when the flange 52 protrudes and fits into the receiving hole 53 by the locking operation, the actuator 55 is pushed by the flange 52. When the micro switch 56 is turned on by the movement of the actuator 55, the circuit is closed and power is supplied to the lamp 57. As a result, the lamp 57 is turned on, and locking can be confirmed.
[0005]
The locking confirmation device of FIG. 5 is one of the improved examples of the locking confirmation device of FIG. 4 and detects the protrusion of the ridge by a reed switch. In addition, the same number is attached | subjected and demonstrated to the same component as the locking confirmation apparatus of FIG.
[0006]
A magnet 61 is provided on the distal end surface of the collar 52 of the lock confirmation device. A reed switch 62 is provided facing the magnet 61 in the door frame 54 in which the receiving hole 53 into which the flange 52 is inserted is formed. The reed switch 62 is connected to a lamp 57 as a display device disposed in a remote place (for example, a management room or a security center) via a power source 58.
[0007]
In this locking confirmation device, when the collar 52 protrudes and fits into the receiving hole 53 by the locking operation, the magnet 61 provided on the distal end surface of the collar 52 approaches the reed switch 62. When the contact of the reed switch 62 is closed by the magnetism of the magnet 61, the circuit is closed and power is supplied to the lamp 57. As a result, the lamp 57 is turned on, and locking can be confirmed.
[0008]
[Problems to be solved by the invention]
However, in the locking confirmation device shown in FIG. 4, since the protrusion detection of the collar 52 is performed only under completely mechanical conditions, the collar 52 and the foreign object cannot be distinguished. For example, even when paper, resin, wood, metal, or the like presses the actuator 55, it is recognized as a hook 52, and there is a possibility that a foreign object other than the hook 52 may be mistaken for locking.
[0009]
Further, in the locking confirmation device of FIG. 5, it is possible to prevent misidentification due to a foreign matter made of a non-magnetic material such as paper, resin, wood or the like, but when a magnetic foreign matter other than the hook 52 approaches the reed switch 62, In response to the foreign matter, the contact of the reed switch 62 is closed and recognized as a flaw, which may be mistaken for locking.
[0010]
As described above, in any of the conventional lock confirmation devices shown in FIGS. 4 and 5, since the lock state due to the protrusion of the lock collar 52 is detected based on the mechanical condition, an object other than the collar 52 is recognized as the collar 52. There was a risk of mistaking it as a lock. Therefore, it was not possible to surely confirm important locks for crime prevention and security.
[0011]
By the way, when centrally managing the lock states of a plurality of rooms in a management room as in a hotel or the like, for example, the lock confirmation device shown in FIG. 4 or FIG. 5 described above is adopted for each lock. Wiring is performed from the lock to the management room.
[0012]
However, in the above configuration, the number of lines corresponding to the number of locks is required, and one line must be wired for each lock, resulting in a problem that the construction cost increases as a whole.
[0013]
In configurations other than the above, a plurality of circuit boards, each assigned an address, are daisy-chain connected to a monitoring board composed of a microcomputer, and each circuit board is connected to a switch strike (microswitch or reed switch) on the lock side. What is connected to is known. In this configuration, by specifying the address from the monitoring panel to each circuit board and performing data communication, the lock of each lock can be collectively confirmed by the monitoring panel, but the problem is that the product is large and expensive. there were.
[0014]
Accordingly, the present invention has been made in view of the above problems, and provides a locking confirmation device that can reliably perform locking confirmation at a remote place and can perform locking confirmation of a plurality of locks with a single system of wiring. The purpose is to do.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 includes a resonance circuit incorporated in a lock jar and resonating at a specific frequency;
A coil that is provided facing the receiving hole into which the flange is inserted, and that is electromagnetically coupled to the resonance circuit when the flange is inserted into the receiving hole;
A pulse generation circuit for supplying a pulse signal to the coil;
The hook is inserted into the receiving hole, the resonance circuit is electromagnetically coupled with the coil, and receives a frequency signal specific to the resonance circuit generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off. Sometimes a discriminating circuit that outputs a signal indicating that it is locked,
And a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit.
[0016]
The invention of claim 2 includes a plurality of resonance circuits that are built in the locks of each lock and resonate at different frequencies,
Corresponding to each of the resonance circuits, it is connected to two transmission lines in a state facing the receiving hole into which the flange is inserted, and when the flange is inserted into the receiving hole, electromagnetic waves are generated between the resonance circuit and the resonance circuit. A plurality of coils to be combined;
A pulse generation circuit for supplying a pulse signal to each of the plurality of coils;
The hook is inserted into the receiving hole, the resonance circuit is electromagnetically coupled with the coil, and receives a frequency signal specific to the resonance circuit generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off. Sometimes a discriminating circuit that outputs a signal indicating that it is locked,
And a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit.
[0017]
The invention of claim 3 includes a first coil, a diode forward-connected to the first coil, and a capacitor and a second coil connected in parallel to the first coil via the diode. A resonant circuit that is built into the lock cage and resonates at a specific frequency;
A third coil provided facing the receiving hole into which the flange is inserted, and electromagnetically coupled with the first coil of the resonance circuit when the flange is inserted into the receiving hole;
A pulse generation circuit for supplying a pulse signal to the third coil;
Resonance generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off when the flange is inserted into the receiving hole and the first coil of the resonance circuit is electromagnetically coupled to the third coil. When receiving a frequency signal specific to the circuit, a discriminating circuit that outputs a signal indicating that it is locked,
And a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit.
[0018]
The invention of claim 4 includes a first coil, a diode forward-connected to the first coil, and a capacitor and a second coil connected in parallel to the first coil via the diode. A plurality of resonant circuits that are built into the lock for each lock and resonate at different frequencies,
The first coil of the resonance circuit is connected to two transmission lines in a state of facing the receiving hole into which the flange is inserted corresponding to each of the resonance circuits, and when the flange is inserted into the receiving hole. A plurality of third coils electromagnetically coupled to each other;
A pulse generation circuit for supplying a pulse signal to each of the third coils;
Resonance generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off when the flange is inserted into the receiving hole and the first coil of the resonance circuit is electromagnetically coupled to the third coil. When receiving a frequency signal specific to the circuit, a discriminating circuit that outputs a signal indicating that it is locked,
And a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit.
[0019]
In the present invention, a resonance circuit that resonates at a different frequency is built in the lock for each lock, and a pulse provided as electric energy from an external pulse generation circuit is applied to the coil provided facing the receiving hole into which the lock is inserted. A signal is given, and the hook is inserted into the receiving hole, and the coil and the resonance circuit are electromagnetically coupled. Every time the pulse signal from the pulse generation circuit is cut off, the frequency signal specific to the resonance circuit generated from the resonance circuit is received. When this occurs, a signal indicating that the lock has been obtained is output, and the indicator is turned on in accordance with the signal indicating that the lock has been achieved, thereby confirming the lock.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a block diagram showing an embodiment of the lock confirmation device according to the present invention.
[0021]
A resonance circuit 3 is built in the heel 2 provided on the lock door 1. The resonance circuit 3 includes a coil (first coil) L1, a diode D, a capacitor C, and a coil (second coil) L2.
[0022]
More specifically, one end of each of the coil L1 and the coil L2 is connected, and the anode of the diode D is connected to the other end of the coil L1. The cathode of the diode D is connected to the other end of the coil L2, and the capacitor C is connected in parallel to the coil L2. The resonance frequency f of the resonance circuit 3 is determined by the coil L2 and the capacitor C.
[0023]
The hook 2 protrudes by an actuator (not shown) at the time of locking, and is inserted into a strike receiving hole 5 attached to the door frame 4.
[0024]
In the door frame 4 facing the receiving hole 5 into which the flange 2 is inserted, a coil (third coil) L3 is disposed opposite to the coil L1 of the resonance circuit 3. A remote display panel 8 is connected to both ends of the coil L3 via a single transmission line 6, 7 composed of two pairs.
[0025]
The remote display panel 8 is disposed at a position (for example, a management room, a security center, etc.) away from the lock to be locked, and includes a pulse generation circuit 9, a discrimination circuit 10, and a display 11.
[0026]
The pulse generation circuit 9 is connected to both ends of the coil L3 via transmission lines 6 and 7, and supplies a pulse signal as electrical energy to the coil L3 via the transmission lines 6 and 7.
[0027]
The discriminating circuit 10 is connected to the transmission lines 6 and 7, and the flange 2 is inserted into the receiving hole 5, the coils L1 and L3 are electromagnetically coupled, and the pulse signal from the pulse generating circuit 9 to the coil L3 is disconnected. When the coil L3 receives and inputs a frequency signal specific to the resonance circuit 3 generated from the resonance circuit 3 every time it is struck, it outputs a status signal indicating “locked”. On the other hand, when a frequency signal specific to the resonance circuit 3 is not received, a state signal indicating “unlocked” is output.
[0028]
The display device 11 is connected to the output of the discrimination circuit 10 and is composed of, for example, a lamp. When the status signal indicating “locked” is input from the determination circuit 10, the indicator 11 lights up to indicate that the display 11 is locked. The indicator 11 is not limited to the lamp lighting display but may be a character display or the like as long as the lock can be confirmed from the outside.
[0029]
Next, the operation of the locking confirmation device according to the first embodiment configured as described above will be described. A resonance circuit 3 is built in the lock basket 2 and a pulse signal is supplied from the pulse generation circuit 9 to each coil L3. In this state, when the collar 2 is inserted into the receiving hole 5 by the locking operation and the coil L1 of the resonance circuit 3 approaches the coil L3 connected to the transmission lines 6 and 7, the coils L1 and L3 are electromagnetically coupled. Thereby, energy by the pulse signal is supplied to the coil L2 and the capacitor C through the coil L3, the coil L1, and the diode D.
[0030]
Then, as shown in FIG. 2 (a), whenever the energy by the pulse signal from the coil L3 is cut off, the back electromotive force of the coil L2 resonates with the coil L2 and the capacitor C as shown in FIG. 2 (b). Cause vibration. At this time, the coil L1 and the coil L2 in the resonance circuit 3 are separated by the diode D, and the resonance Q of the coil L2 and the capacitor C does not decrease. Thereby, the vibration level generated from the resonance circuit 3 can be set high.
[0031]
When the frequency signal of the resonance circuit 3 is input to the discrimination circuit 10 through the coils L1 and L3 in a state where the coils L1 and L3 are electromagnetically coupled, the discrimination circuit 10 indicates a status signal indicating “locking”. Is output to the display 11. When the status signal indicating “locking” is input from the determination circuit 10, the display 11 turns on a display indicating locking, for example, a lamp. Thereby, locking can be confirmed.
[0032]
On the other hand, when an object other than the collar 2 approaches or fits into the receiving hole 5, the coil L1 of the resonance circuit 3 built in the collar 2 is connected to the pulse generation circuit 9 via the transmission lines 6 and 7. Since the coil L3 is not electromagnetically coupled and there is no response to the pulse signal from the pulse generation circuit 9, no status signal indicating "locked" is output from the discrimination circuit 10. Therefore, a lock that is not in a locked state is not mistaken for a lock by a foreign object other than the hook 2.
[0033]
Next, FIG. 3 is a figure which shows 2nd Embodiment of the locking confirmation apparatus by this invention. In addition, the same number is attached | subjected to the component same as 1st Embodiment mentioned above, and detailed description is abbreviate | omitted.
[0034]
The lock confirmation device according to the second embodiment is for confirming the lock of a plurality of locks by one system of wiring. Resonance circuits 3 (3 _{1 to} 3 _n ) having the above-described configuration are built in the locks 2 (2 ₁ to 2 _n ) of the locks to be locked. The resonance frequency f ₁ ~f _n of each resonant circuit 3 ₁ to 3 _n, the coil L2 (L2 ₁ ~L2 _n), is determined by the capacitor C (C ₁ ~C _n), it is set to different resonant frequencies, respectively.
[0035]
A plurality of coils L3 are connected in series to the two transmission lines 6 and 7 configured as a pair. Coils L3 are provided for the number of locks to be locked. Each coil L3 ₁ to L3 _n is the door frame 41 _to face the receiving holes 5 ₁ to 5 _n to obex 2 ₁ to 2 _n is fitted to correspond to the resonant circuit 3 ₁ to 3 _n of each tablet _n .
[0036]
A remote display panel 18 is connected to both ends of one line of transmission lines 6 and 7 to which a plurality of coils L3 _{1 to} L3 _n are connected. The remote display panel 18 is disposed at a position (for example, a management room, a security center, etc.) away from the lock to be locked, and includes a pulse generation circuit 9, a pass filter 12, a discrimination circuit 10, and a display 11. Composed.
[0037]
The pulse generation circuit 9 is connected to both ends of the transmission lines 6 and 7 and supplies a pulse signal as electrical energy to the coils L3 _{1 to} L3 _n via the transmission lines 6 and 7.
[0038]
Pass filter 12, only a few minutes of tablets the locking confirmation of the target is connected to the transmission line 6 and 7, the resonant frequency signal induced in the coil L3 ₁ to L3 _n from each resonant circuit 3 ₁ to 3 _n The circuits 3 _{1 to} 3 _n are separately passed for each resonance frequency. That is, each of the pass filters 12 _{1 to} 12 _n has a different set frequency of the signal to be passed, and each set frequency corresponds to each resonance frequency f _{1 to} f _n of the resonance circuit 3 in a 1: 1 ratio. Yes.
[0039]
In each of the pass filters 12 _{1 to} 12 _n , each time the flange 2 is inserted into the receiving hole 5, the coil L 1 and the coil L 3 are electromagnetically coupled, and the pulse signal from the pulse generation circuit 9 to the coil L 3 is cut off. When the coil L3 receives the frequency signal specific to the resonance circuit 3 generated from the signal 3, only the signal of the set frequency is passed.
[0040]
The discrimination circuit 10 is connected to the outputs of the respective pass filters 12 _{1 to} 12 _n , and outputs a status signal indicating “locked” when a frequency signal is input from the pass filter 12. On the other hand, when no frequency signal is input, a status signal indicating “unlocked” is output.
[0041]
Display 11 is connected to the output of each of the discriminating circuit 10 ₁ to 10 _n, for example, is composed of a lamp or the like, when the state signal indicating "lock" from the discrimination circuit 10 is input, confirmation of locking Turn on the lamp so that
[0042]
In the lock confirmation device according to the second embodiment, the resonance circuits 3 _{1 to} 3 _n are incorporated in the ridges 2 ₁ to 2 _n for each lock, and a pulse signal is sent from the pulse generation circuit 9 to the coils L 3 _{1 to} L 3 _n. Supply. In this state, when the collar 2 is inserted into the receiving hole 5 by the locking operation and the coil L1 of the resonance circuit 3 approaches the coil L3 connected to the transmission lines 6 and 7, the coils L1 and L3 are electromagnetically coupled. Thereby, energy by the pulse signal is supplied to the coil L2 and the capacitor C through the coil L3, the coil L1, and the diode D. This energy is supplied only to the lock in which the collar 2 is inserted into the receiving hole 5 by the locking operation.
[0043]
And whenever the energy by the pulse signal from the coil L3 is cut | disconnected, the counter electromotive force of the coil L2 raise | generates the vibration which resonated with the coil L2 and the capacitor | condenser C. FIG. The frequency signal of the resonance circuit 3 is input to the pass filter 12 via the electromagnetically coupled coils L1 and L3. The pass filter 12 separates the frequency signal from the resonance circuit 3 for each resonance frequency, and each pass filter 12 passes only the frequency signal that matches the set frequency.
[0044]
Then, the determination circuit 10 determines the presence or absence of the frequency signal separated by the pass filter 12, and when the signal is input from the pass filter 12, the determination circuit 10 sends a status signal indicating "locked" to the display unit 11. Output. When the status signal indicating “locking” is input from the determination circuit 10, the display 11 turns on a display indicating locking, for example, a lamp.
[0045]
As described above, in the lock confirmation device according to the second embodiment, the frequency signal input to the remote display panel 18 as the response of the pulse signal from each lock is separated by the pass filter 12 for each resonance frequency of the resonance circuit 3. . The presence / absence of the separated frequency signal is discriminated by the discriminating circuit 10, and the indicator 11 is lit and displayed with a status signal indicating "locked" from the discriminating circuit 10, whereby each lock corresponding to the resonance frequency is displayed. The lock is confirmed by a single line of wiring.
[0046]
Therefore, according to the locking confirmation device of each of the above embodiments, when the collar 2 is inserted into the receiving hole 5, the energy generated by the pulse signal from the external pulse generation circuit 9 with respect to the resonance circuit 3 built in the collar 2 Is provided via electromagnetic coupling between the coils L1 and L3. When the frequency signal specific to the resonance circuit 3 generated from the resonance circuit 3 is received every time the energy is cut off, it is determined as being locked and a display indicating locking is displayed, and when it is not received, it is determined as unlocking. As a result, the locked state (including the unlocked state) of the lock when the hook 2 is put in and out of the receiving hole 5 can be reliably confirmed even in a remote place without being mistaken as locked by a foreign object other than the hook 2 as in the past. can do.
[0047]
And the said lock | rock confirmation apparatus receives the discrimination | determination signal which shows locking or unlocking with the entrance / exit of the cage | basket 2 to the receiving hole 5 as an electrical signal in a remote place, and this electrical signal is displayed on the indicator 11 or a security device. It can be used as a signal input for driving the camera, and can be applied to a device for crime prevention.
[0048]
By the way, in the second embodiment, a case where a plurality of coils L3 (L3 _{1 to} L3 _n ) arranged for each lock is connected in series to a pair of two transmission lines 6 and 7 is illustrated. However, even if a plurality of L3 (L3 _{1 to} L3 _n ) coils are connected in parallel to the pair of transmission lines 6 and 7, the same effect can be obtained.
[0049]
【The invention's effect】
As is clear from the above description, according to the present invention, as in the prior art, the locked state by inserting the hook into the receiving hole is surely confirmed even in a remote place without being misidentified as locked by a foreign object other than the hook. be able to. In addition, locking confirmation of a plurality of locks can be performed with one system of wiring.
[Brief description of the drawings]
FIG. 1 is a block configuration diagram showing a first embodiment of a locking confirmation device according to the present invention. FIGS. 2 (a) and (b) are diagrams showing a relationship between a pulse signal and a resonance frequency in the locking confirmation device. 3 is a block diagram showing a second embodiment of the lock confirmation device according to the present invention. FIG. 4 is a schematic diagram of a conventional lock confirmation device using a mechanical switch. FIG. 5 is a diagram showing a conventional lock using a reed switch. Schematic configuration diagram of confirmation device [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Door, 2 ... 閂, 3 ... Resonance circuit, 4 ... Door frame, 5 ... Receiving hole, 6, 7 ... Transmission line, 8, 18 ... Remote display board, 9 ... Pulse generation circuit, 10 ... Discrimination circuit, 11 ... Display, 12 ... Pass filter, L1 ... first coil, D ... diode, C ... capacitor, L2 ... first coil, L3 ... third coil.

Claims (4)

A resonant circuit that is built into the lock cage and resonates at a specific frequency;
A coil that is provided facing the receiving hole into which the flange is inserted, and that is electromagnetically coupled to the resonance circuit when the flange is inserted into the receiving hole;
A pulse generation circuit for supplying a pulse signal to the coil;
The hook is inserted into the receiving hole, the resonance circuit is electromagnetically coupled with the coil, and receives a frequency signal specific to the resonance circuit generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off. Sometimes a discriminating circuit that outputs a signal indicating that it is locked,
A lock confirmation device comprising: a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit. A plurality of resonance circuits that are built into the bag for each lock and resonate at different frequencies,
Corresponding to each of the resonance circuits, it is connected to two transmission lines in a state facing the receiving hole into which the flange is inserted, and when the flange is inserted into the receiving hole, electromagnetic waves are generated between the resonance circuit and the resonance circuit. A plurality of coils to be combined;
A pulse generation circuit for supplying a pulse signal to each of the plurality of coils;
The hook is inserted into the receiving hole, the resonance circuit is electromagnetically coupled with the coil, and receives a frequency signal specific to the resonance circuit generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off. Sometimes a discriminating circuit that outputs a signal indicating that it is locked,
A lock confirmation device comprising: a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit. Built in a lock jar comprising a first coil, a diode forward-connected to the first coil, a capacitor and a second coil connected in parallel to the first coil via the diode A resonant circuit that resonates at a specific frequency;
A third coil provided facing the receiving hole into which the flange is inserted, and electromagnetically coupled with the first coil of the resonance circuit when the flange is inserted into the receiving hole;
A pulse generation circuit for supplying a pulse signal to the third coil;
Resonance generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off when the flange is inserted into the receiving hole and the first coil of the resonance circuit is electromagnetically coupled to the third coil. When receiving a frequency signal specific to the circuit, a discriminating circuit that outputs a signal indicating that it is locked,
A lock confirmation device comprising: a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit. A first coil, a diode forward-connected to the first coil, a capacitor and a second coil connected in parallel to the first coil through the diode, and a lock for each lock A plurality of resonant circuits that resonate at different frequencies,
The first coil of the resonance circuit is connected to two transmission lines in a state of facing the receiving hole into which the flange is inserted corresponding to each of the resonance circuits, and when the flange is inserted into the receiving hole. A plurality of third coils electromagnetically coupled to each other;
A pulse generation circuit for supplying a pulse signal to each of the third coils;
Resonance generated from the resonance circuit every time the pulse signal from the pulse generation circuit is cut off when the flange is inserted into the receiving hole and the first coil of the resonance circuit is electromagnetically coupled to the third coil. When receiving a frequency signal specific to the circuit, a discriminating circuit that outputs a signal indicating that it is locked,
A lock confirmation device comprising: a display for displaying a lock according to a signal indicating that the lock is received from the discrimination circuit.

Images