JPH03241180A - Locked state confirming device - Google Patents

Abstract

PURPOSE:To improve the reliability of the above device by installing sensors which are actuated in connection with the engagement and disengagement of locks to each window and door and, at the same time, confirming the locked state of each window and door from the presence/absence of echoes produced by each sensor by reflecting monitoring signals transmitted from a main burglar preventive device. CONSTITUTION:Sensor devices 30A and 30B composed of antenna circuits the switches of which are turned on and off when locks are engaged and disengaged are installed to each window and door. In addition, an antenna 23 which covers the wide entire area of a house and transmits monitoring signals is installed to a main burglar preventive device 20. The locked state of each lock is detected from echoes produced by each sensor by reflecting monitoring signals transmitted from the antenna 23 and the detected results are displayed on the main device 20. Therefore, the reliability of this device which confirms the locked state of each window and door can be improved.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a lock confirmation device for windows and the like.

[Prior Art] Japanese Patent Application Laid-Open No. 1983-1999 discloses a method for checking the locking of a crescent lock for locking a sliding door housed in an opening in a building by engaging a rotary engaging member and a fixed engaging member. It is conceivable to use an electromagnetic coupling communication system as described in Japanese Patent No. 27891.

A lock confirmation device using this electromagnetic coupling communication system is composed of a main device and a sensor device housed in a door separated from the main device. The main device includes a signal generating section that generates a specific monitoring frequency signal, a detecting section that detects the presence or absence of an echo from the sensor device, and transmits the generated signal of the signal generating section to the sensor device by electromagnetic coupling. and a first antenna that receives echoes from the sensor device, a changeover switch that selectively connects the signal generation section and the detection section to the first antenna, and a changeover switch that connects the signal generation section and the detection section at a constant cycle. It is configured to include a control section that switches to each side, and a display section that displays the detection results of the detection section. The sensor device also includes a second antenna that receives the monitoring frequency signal from the signal generator through electromagnetic coupling and transmits an echo resonated with the signal to the main device, and a second antenna that receives the monitoring frequency signal from the main device. A resonant circuit corresponding to the second antenna and a reat switch inserted between the second antenna and the resonant circuit and turned on/off in conjunction with locking and unlocking of the door.

As a result, if the leet switch is turned on in conjunction with the locking of the door, the sensor device will resonate with the monitoring frequency signal received through the second antenna, as the resonance circuit will be closed with the second antenna. The circuit resonates, and echoes due to the resonant current are received by the first antenna through electromagnetic coupling. When the REET switch is off, the second antenna is disconnected and the above-mentioned echo does not occur. Since the echo received via the first antenna is input to the detection section of the main device, the detection section can detect the locked/unlocked state of the door from the presence of this echo.

[Invention or problem to be solved] However, the prior art has the following problem (2).

■The leet switch is turned on/off by magnetically interlocking with the locking/unlocking of the door, and does not rely on the engagement between the fixed engagement member and the rotary engagement member itself to turn on/off.

For this reason, the leet switch may be turned on due to the upward movement of the rotary engagement member, and the reliability of locking confirmation is low.

(2) The second antenna included in the sensor device is only installed in a narrow local area around the reed switch installation part of the door frame material. Therefore, there is a limit to the improvement in the transmission and reception performance of the second antenna, and there are disadvantages such as a limited degree of freedom in selecting the relative installation positions of the main device and the sensor device.

An object of the present invention is to detect the locking/unlocking itself and install an antenna for electromagnetic coupling communication over a wide range of the entire door, thereby easily ensuring the reliability of locking confirmation.

[Means for Solving the Problems] The present invention according to claim 1 includes a main device and an 11
! This locking confirmation device consists of a sensor device installed in a door housed in an opening in a separated building, and locks the door by engagement of two engaging members, the main device is a sensor device installed in a door housed in an opening of a separate building, a signal generating section that generates a frequency signal for use, a detecting section that detects the presence or absence of an echo from the sensor device, and a signal generating section that transmits the generated signal of the signal generating section to the sensor device and receives the echo from the sensor device through electromagnetic coupling. a first antenna, a changeover switch that selectively connects each of the signal generation section and the detection section to the first antenna, and a control section that switches the changeover switch to the respective sides of the signal generation section and the detection section at a constant cycle; The sensor device includes a first fixed engagement part and a first fixed engagement part that constitute a fixed engagement member fixed to the tone and are electrically insulated from each other. a locking switch that enables conduction between the two fixed engagement parts and the movable engagement member in an engaged state between the two fixed engagement parts and the movable engagement member;
Connecting a first fixed engagement part and a second fixed engagement part that are provided along the periphery of the door and constitute a locking switch,
An antenna circuit that constitutes a second antenna that receives the monitoring frequency signal from the main device through electromagnetic coupling; and a resonant circuit that is inserted between the lock switch and the antenna circuit and that corresponds to the monitoring frequency signal from the main device. It is configured to have the following.

According to a second aspect of the present invention, the resonant circuit of the sensor device is an LCX parallel resonant circuit including a second antenna, a capacitor, and a solid-state resonator.

[Function] According to the present invention as set forth in claim 1, there is the following function and effect.

■When the door is locked, when the locking switch is closed by the rotating engagement member completing engagement with the first fixed engagement part and the second fixed engagement part of the fixed engagement member, the second antenna and Since a closed circuit including a resonant circuit is formed, in the sensor device, the resonant circuit resonates due to the monitoring frequency signal received through the second antenna, and an echo due to the resonant current is received by the first antenna due to electromagnetic coupling. be done. When the door is unlocked, the lock switch is open and the second antenna is disconnected, so the echo mentioned above does not occur. In the main device, the echo received via the first antenna is input to the detection section, and the detection section detects the locked state of the door from the presence or absence of this echo. At this time, the locking switch is opened and closed by the engagement between the fixed engagement member and the rotary engagement member, in other words, the locking/unlocking of the lock itself is detected. Therefore, there is no false detection of lock/unlock, and the reliability is high.

Further, the second antenna of the sensor device is provided along the periphery of the door, and the antenna is spread over a wide area facing the inside and outside of the building. Therefore, there are advantages such as easily improving the transmission and reception performance of the second antenna and increasing the degree of freedom in selecting the relative installation positions of the main device and the sensor device.

That is, by detecting the locking/unlocking itself and installing an antenna for electromagnetic coupling communication over a wide range of the entire door, the reliability of lock confirmation can be easily ensured.

According to the present invention as set forth in claim 2, there is the following effect (2).

■By generating an echo for the monitoring frequency signal using the L CX parallel resonant circuit, the echo attenuation becomes gradual, and as a result, the echo level increases after the same amount of time has elapsed, extending the detection distance. It is possible to increase the wireless distance between the device and the sensor device. Therefore, the degree of freedom regarding the location of the main device and the sensor device is increased, and the construction of the lock confirmation device is simplified.

[Example] Fig. 1 is a front view of main parts showing a lock confirmation sensor device, Fig. 2 is a schematic diagram showing a crescent lock, Fig. 3 is a schematic diagram showing a crime prevention and disaster prevention device, and Fig. 4 is a schematic diagram showing a crime prevention and disaster prevention device. Block diagram shown,
FIG. 5 is an electrical circuit diagram showing the crime prevention and disaster prevention device, and FIG. 6 is a schematic diagram showing the construction state of the unit building.

As shown in FIG. 6, the unit building 1 is constructed by connecting a plurality of building units 3 to each other on the upper part of a foundation 2.

The unit building 1 is equipped with a crime prevention and disaster prevention device 10 consisting of an electromagnetic coupling communication system as shown in FIGS. 3 to 5.

The crime prevention and disaster prevention device 10 includes a main device 20 and a plurality of sensor devices 30 (window lock confirmation sensor device 30A, entrance lock confirmation sensor device 30A, door lock confirmation sensor device 30A, door lock confirmation sensor device 30A, door lock confirmation sensor device 30A, etc. Confirmation sensor device 30
B, fire sensor device 30C, etc.).

The main device 20 includes a signal generating section 21, a detecting section 22, and a first
The antenna 23 (interface Ll), a changeover switch 24, a control section 25, and a display section 26 are configured.

The signal generating section 21 generates different frequencies f1.
f2. Monitoring frequency signals f3... are sent out sequentially and cyclically at a predetermined period.

The detection unit 22 takes in signals from each sensor device 30,
The presence or absence of an echo is detected by performing signal amplification. At this time, the detection unit 22 detects the state of each monitoring target (window locked state, entrance locked state, fire occurrence state, etc.) from the presence or absence of echoes and the frequency.

The first antenna 23 is, for example, a loop antenna,
The signal generated by the signal generator 21 is transmitted and the echo is received by electromagnetic coupling.

The changeover switch 24 selectively connects the signal generation section 21 and the detection section 22 to the first antenna 23 .

The control unit 25 controls starting and stopping of the signal generating unit 21, and also controls switching every time the signal generating unit 2■ sends out a frequency signal for monitoring, just before the echo from each sensor device 30 attenuates. Switch 24 is switched to the detection section 22 side.

The display unit 26 displays the detection result of the detection unit 22 by, for example, turning on or off a light emitting element, or by sounding a buzzer.

Each sensor device 30 (30A, 30B, 30C...)
are the second antenna 31 (inductance L2), the capacitor 32 (capacity @C2), the crystal oscillator 33 (X), the sensing switch 34 (window locking switch 34A, entrance locking switch 34B, heat sensing switch 34C, etc.). ).

The second antenna 31 of each sensor device 30 receives the monitoring frequency signals fL, fZ, f3, . Sends a resonant echo.

In each sensor device 30, the second antenna 31, capacitor 32, and crystal oscillator 33 connect the LCX parallel resonant circuit to frequencies f1, f2, f3, etc. of the monitoring frequency signals sent out by the signal generator 21. The values of L2, C2, and X are selected so as to resonate with a specific one of the following.

The sensing switch 34 of each sensor device 30 is connected to the capacitor 3
It is inserted between the parallel circuit of 2 and the crystal oscillator 33 and the second antenna 31, and is turned on/off by detecting a window lock, a door lock, a fire, etc.

Next, the operation of the crime prevention and disaster prevention device 10 will be explained.

In the crime prevention and disaster prevention device 10, monitoring frequency signals of frequencies flf2, f3, . . .
It is sequentially and cyclically oscillated from the antenna 23.

Now, window lock confirmation sensor device 30A resonates at frequency fn
It is assumed that only the window-locked Sui Sochi 34A, which is the subject of monitoring, is closed by locking the window.

At this time, the crime prevention and disaster prevention device 10 performs the following (A) and (B).
It works like this.

(A) Frequencies f1, f2. While the monitoring frequency signal of f 3-f (n-1) is being sent from the signal generator 21, the sensor devices 30 other than the window locking confirmation sensor device 30A operate because their sensing switches 34 are turned off. do not.

■The window locking confirmation sensor device 30A is the window locking switch 34
Since A is on, the I-th antenna 23 and the second antenna 31 are electromagnetically coupled, but no resonance operation is performed.

(B) The monitoring frequency signal of frequency fn is transmitted to the signal generator 21
When the signal is transmitted from the first antenna 27 and oscillated from the selector switch 24 or the signal generator 21 (ll (contact a)
, a current of frequency fn flows from the signal generator 21 to the first antenna 23.

■ Due to the above, magnetic flux is generated from the first antenna 23, and among the sensor devices 30, either the window lock switch 34A or the window lock confirmation sensor device 30A that is in the on state resonates in parallel, and the resonant current flows to the second antenna. It flows to 31.

(2) At a timing synchronized with the end of the oscillation in (2) above, the changeover switch 24 is switched to the detection section 22 side (contact b).

(2) Due to the above (2), the magnetic flux from the first antenna 23 disappears, and an echo (alternating magnetic flux) is generated from the second antenna 31.

■Through the mutual inductance M, the first antenna 23
and the second antenna 31 are electromagnetically coupled, and an induced current flows through the first antenna 23.

■That is, the echo generated in the window lock confirmation sensor device 1j30A in response to the monitoring frequency signal is caused by electromagnetic coupling.
This received signal is input to the detection section 22 through the changeover switch 24, where it is amplified.

■The detection unit 22 checks the assigned lock confirmation sensor device 30A based on the frequency of the input received echo, and displays monitoring information regarding the sensing result (window locking) of the sensor device 30A on the display unit 26. do.

When the signal processing and discrimination processing in the detection section 22 are completed, the control section 25 switches between the changeover switch 24 and the signal generation section 21 (till (contact a)), and also switches the signal generation section 21 to monitor the frequency fl. Send out a frequency signal.

However, because the LCX parallel resonant circuit includes the crystal oscillator 33, the resonant current of the LCX parallel resonant circuit is attenuated more slowly than in the case of the LC parallel resonant circuit, and it takes less time for the resonant current to attenuate to a critical level that can be received. become longer. This means that Dousei 720
This means that the transmission/reception distance between the first antenna 23 of the sensor device f30 and the second antenna 31 of the sensor device f30 can be extended. In addition, since the LCX parallel resonant circuit has a high Q value, the resonance waveform becomes sharp, and the frequency band required to identify received echoes is narrow enough, making it possible to identify multiple echoes in different frequency ranges without interference. It becomes easier.

However, in the above embodiment, the window lock confirmation sensor device 3
Specifically, 0A is a sliding door 42 (right sliding door 4) housed in a window opening frame 41, as shown in FIGS. 1 and 2.
2A and the crescent lock 4 installed on the left sliding door 42B)
It is possible to confirm the locking of item 3, and it is configured as follows. The crescent lock 43 has a rotating engagement member 45 supported by the frame material 44A of the right sliding door 42A and a fixed engagement member 46 fixed to the frame material 44.8 of the left sliding door 42B. It is configured with As a result, Crescent lock 43
The sliding doors 42A, 42B can be locked by engaging the rotary engaging member 45 with the fixed engaging member 46 with both the sliding doors 42A, 42B fully closed. .

Therefore, the window lock confirmation sensor device 30A includes the above-mentioned window lock switch 34A, an antenna circuit 35 forming the second antenna 3, a second antenna 31, and a capacitor 32.
, and the above-mentioned LCX parallel resonant circuit including the crystal resonator 33.

At this time, the window locking switch 34A locks the first fixed engagement part 46A and the second fixed engagement part 46B, which constitute the above-mentioned fixed engagement member 46 and are electrically insulated from each other, into two fixed engagement parts. When the joint portions 46A and 46B are engaged with the rotational engagement member 45, conduction is possible. Both fixed engagement parts 46A and 46B are electrically insulated from each other by an insulating part 46C made of a hard synthetic resin material.

Further, the antenna circuit 35 forming the second antenna 31 is provided on the window glass of the left sliding door 42B along its peripheral edge, and is connected to the first fixed engagement portion 46A forming the window locking switch 34A. The second fixed engagement portion 46B is electrically connected. Note that the antenna circuit 35 is connected to the second antenna 31
It can be easily installed by attaching a plastic film printed in a loop shape to the window glass surface.

The LCX parallel resonant circuit consisting of the second antenna 31, capacitor 32, and crystal resonator 33 is inserted between the window lock switch 34A and the antenna circuit 35, and is used for monitoring from the main device 20 as described above. Corresponds to frequency signals.

Next, the operation of the above embodiment will be explained.

■When the sliding door 42 is locked, the first fixed engagement part 46A of the rotating engagement member 4S or the fixed engagement member 46 and the second fixed engagement part 4
6B and closes the window locking switch 34A, a closed circuit of the antenna circuit 35 including the second antenna 31 and the LCX parallel resonant circuit is formed, so the window locking confirmation sensor device 30A closes. The LCX parallel resonant circuit resonates with the monitoring frequency signal received through the second antenna 31, and is received by the first antenna 23 due to an echo caused by the resonant current or electromagnetic coupling. When the sliding door 42 is unlocked, the window lock switch 34A is closed and the second antenna 31 is disconnected, so the echo described above does not occur. In the main device 20, the echo received via the first antenna 23 is input to the detection unit 22, and
The locked state of the sliding door 42 can be detected from the presence or absence of this echo. At this time, the window lock switch 34A is opened and closed by the engagement between the fixed engagement member 46 and the rotary engagement member 45, and in other words, the locking and unlocking of the crescent lock 43 itself is detected. Therefore, there is no false detection of locking/unlocking, and the reliability is high.

Moreover, the second antenna 31 of the window lock confirmation sensor device 30A
are provided along the periphery of the sliding door 42, and the antenna 31 is spread over a wide area facing the inside and outside of the building. Therefore, the transmission and reception performance of the second antenna 31 can be easily improved, and the main device 20 and the window lock confirmation sensor device 30A can be connected to each other.
This has the advantage of increasing the degree of freedom in selecting the installation location relative to the

That is, by detecting the locking/unlocking of the crescent lock 43 itself and installing the antenna 31 for electromagnetic coupling communication over a wide range of the entire sliding door 42, the reliability of locking confirmation can be easily ensured.

■By generating an echo for the monitoring frequency signal using the LCX parallel resonant circuit, the echo attenuation becomes more gradual, and as a result, the echo level increases after the same amount of time has elapsed, making it possible to extend the detection distance. It is possible to increase the wireless distance between the device 20 and the sensor device 30. Therefore, the main device 20 and the sensor device 30
The degree of freedom regarding the location of the device 10 is increased, and the construction of the crime prevention and disaster prevention device 10 can be simplified.

Note that in implementing the present invention, the resonant circuit that constitutes the sensor device does not necessarily need to be an LCX parallel resonant circuit.

[Effects of the Invention] As described above, according to the present invention, an antenna for detecting locking/unlocking itself and for electromagnetic coupling communication is installed over a wide range of the entire door, thereby easily increasing the reliability of lock confirmation. Can be secured.

[Brief explanation of drawings]

Fig. 1 is a front view of main parts showing a lock confirmation sensor device, Fig. 2 is a schematic diagram showing a crescent lock, Fig. 3 is a schematic diagram showing a crime prevention and disaster prevention device, and Fig. 4 is a block diagram showing the crime prevention and disaster prevention device.
FIG. 5 is an electrical circuit diagram showing the crime prevention and disaster prevention device, and FIG. 6 is a schematic diagram showing the construction state of the unit building. DESCRIPTION OF SYMBOLS 10... Crime prevention and disaster prevention device, 20... Main device, 21... Signal generation part, 22... Detection part, 23... First antenna, 24... Changeover switch, 25... Control unit, 26...Display unit, 30A...Window lock confirmation sensor device, 31...Second antenna, 32...Capacitor, 33...Crystal oscillator, 34A...Window lock switch , 35... Antenna circuit, 41... Window opening frame, 42... Sliding door, 43... Crescent lock, 45... Rotating engagement member, 46... Fixed engagement member, 46A: First fixed engagement portion, 46B: Second fixed engagement portion, 46C: Insulating portion.

Claims (2)

[Claims] (1) A locking confirmation device consisting of a main device and a sensor device installed in a door housed in an opening in a building separated from the main device, and locking the door by engagement of two engaging members. The main device includes a signal generation section that generates a specific monitoring frequency signal, a detection section that detects the presence or absence of an echo from the sensor device, and a signal generation section that transmits the generated signal of the signal generation section to the sensor device through electromagnetic coupling. and a first antenna that receives echoes from the sensor device, a changeover switch that selectively connects each of the signal generation section and the detection section to the first antenna, and a changeover switch that connects the signal generation section and the detection section at a constant cycle. The sensor device comprises a control section that switches to each side of the door, and a display section that displays the detection results of the detection section, and the sensor device constitutes a fixed engagement member fixed to the door side and is electrically insulated from each other. A locking switch that enables conduction between the first fixed engagement part and the second fixed engagement part, which are both fixed engagement parts and the movable engagement member; An antenna configured to connect the first fixed engagement part and the second fixed engagement part constituting the lock switch, and to constitute a second antenna that receives a monitoring frequency signal from the main device by electromagnetic coupling. A lock confirmation device comprising: a circuit; and a resonant circuit that is inserted between a lock switch and an antenna circuit and corresponds to a monitoring frequency signal from a main device. (2) The lock confirmation device according to claim 1, wherein the resonant circuit of the sensor device is an LCX parallel resonant circuit consisting of a second antenna, a capacitor, and a solid resonator.