JPH04296998A - Wireless window opening closing detecting system - Google Patents

Abstract

PURPOSE:To realize a centralized monitoring the locking and unlocking detection of plural windows. CONSTITUTION:This system is equipped with a signal generating means A to generate the signal of plural different frequencies and successively transmit them with the prescribed period, a loop antenna 3 to transmit/receive the signal, plural returning means B equipped with a resonator with large Q to generate the reflecting signal in correspondence to the transmission signal from the signal generating means A with the inherent frequency disposed respectively at the frame of plural windows and set for each window by the locking of respective windows, a locking detecting displaying means C to detect the reflecting signal from the returning means B and display the position of the window transmitted by the frequency of the reflecting signal, and a change-over switch 10 to match with the prescribed period and switch the signal generating means A and the locking detecting displaying means C for each frequency, be connected to the loop antenna 3 and form alternately the transmission circuit and the reception circuit. When the window is unlocked for the system, the unlocking detecting displaying is performed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless window opening/closing detection system capable of wirelessly centrally detecting and displaying the opening/closing of windows in accordance with the locking or unlocking of a plurality of windows.

0002

[Prior Art] A conventional window opening/closing detection system used for security monitoring, as shown in Utility Model Application No. 56-130568, detects electric wires by turning on/off an opening/closing detection switch provided at each window. Generally, display is performed through In addition, some wireless window opening/closing detection systems have been put into practical use, as shown in Japanese Patent Application Laid-Open No. 62-27891.

0003

[Problems to be Solved by the Invention] However, in the conventional example, since the opening/closing of the window is indicated by the current flowing through the electric wire as described above, each window and the control panel are connected by electric wires, and when opening/closing is detected, In order to conduct current, wiring work is difficult and safety measures are required, and if the wire breaks midway, it will not function, and repairing it is very time-consuming and requires a lot of work, including installation. There were various problems, including the high cost of maintaining the system itself.

[0004] Furthermore, in the case of a wireless opening/closing detection system, the distance at which opening/closing can be detected is very short, and the frequency resonance selectivity is also low, so it is difficult to detect the opening/closing of a large number of windows in a concentrated manner. there were.

The present invention was made in order to solve the problems of the conventional example as described above, and provides a wireless window that can accurately detect and display the opening and closing of a large number of windows wirelessly, and that is easy to install and maintain. The purpose is to provide an open/close detection system.

[0006]

[Means for Solving the Problem] Therefore, the wireless window opening/closing detection system according to the present invention includes a signal generating means for generating signals of a plurality of different frequencies and sequentially transmitting the signals at a predetermined period, and and a loop antenna for reception, which is arranged in each frame of a plurality of windows, and generates a reflected signal in response to the transmitted signal from the signal generating means at a unique frequency set for each window by locking each window. a plurality of reply means each having a resonator with a large generated Q; a lock detection display means for detecting a reflected signal from the reply means and displaying the position of the window emitted based on the frequency of the reflected signal; and the predetermined period. The reply means includes a changeover switch that switches the signal generation means and the lock detection display means for each frequency according to the frequency and connects to the loop antenna to alternately form a transmitting circuit and a receiving circuit.
A loop antenna that also serves as a coil formed by the frame of the window and a lock having a switch function, a capacitor and the resonator, further comprising a signal generating means for generating and transmitting a signal of a predetermined frequency. , a loop antenna for transmitting and receiving signals, and a high-Q resonator disposed in each frame of a plurality of windows and generating a reflected signal in response to transmission from the signal generating means when the window is unlocked. a plurality of reply means equipped with a plurality of reply means, an unlock detection display means for detecting the reflected signal from the reply means and displaying a notification that the window is unlocked;
The above object is achieved by comprising a changeover switch that switches the unlock detection display means and the signal generation means at a predetermined timing and connects to the loop antenna to alternately form a transmitting circuit and a receiving circuit. This is what I am trying to do.

[0007]

[Operation] The wireless window opening/closing detection system according to the present invention configured as described above generates signals at different unique frequencies depending on whether each window is locked, from the reply means arranged in each frame of a plurality of windows. The locking detection display means accurately detects the locking of each window based on the reflected signal and displays the position of the locked window. This allows the location of locked windows to be centrally displayed and the locking of multiple windows to be accurately monitored.Furthermore, when any of the multiple windows is unlocked, it is automatically Since a notification is displayed by the detection display means, abnormal unlocking after all windows are locked can be intensively monitored.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

(Configuration) FIG. 1 is an explanatory diagram of the main part configuration of a wireless window opening/closing detection system showing an embodiment of the present invention, FIG. 2 is a control circuit block diagram of the window opening/closing detection system of the above embodiment, and FIG. Similarly, FIG. 4 is a front view of the structure of a window to which the lock of the above embodiment is attached, FIG. 4 is a perspective view of the structure of the main part showing the structure of the lock of the above embodiment, and FIG. , FIG. 6 is the same circuit diagram. In FIGS. 1 to 6, 1 is a window opening/closing detection system (hereinafter referred to as a detection system), and 2 is a signal generating means A that generates signals of a plurality of different frequencies and sequentially transmits them at a predetermined period. In the signal transmitting unit, 3 is a loop antenna (hereinafter referred to as a first antenna) disposed on the ceiling or the like, 3A is an antenna formed by the inner frame 4a of the window 4 (hereinafter referred to as a second antenna), Contacts c, h and d, i at both ends
It is equipped with 4b is a window glass, 5 is a lock provided on the outer frame 4c of the window and locks the inner frames 4a, 4a, and this lock 5 includes a U-shaped conductive lock portion (hereinafter referred to as a lock portion) 5a, A lever 5b is pivoted on a support shaft d which is a fulcrum of rotation, and is inserted into a lock hole 4d provided on the bottom of the inner frame 4a by sliding the lock portion 5a up and down to lock the lever 5b. It is composed of a handle 5c that can be rotated up and down as a fulcrum, and when the lock part 5a is inserted into the lock hole 4d and locked, the contacts c and d at the end of the second antenna 3A formed by the inner frames 4a and 4a. are configured to form a circuit through contact conduction. 6a is
Resonators with high Q such as crystal resonators and ceramic resonators 6
u, capacitor 6v, lock 5 and second antenna 3
When the window 4 is closed, the contacts e and g of the second antenna come into contact with the contacts h and i, and when the door is locked and the contacts c and d come into contact, a loop antenna that also serves as a coil is formed. A locking sensor (hereinafter referred to as a sensor) which is reply means B, 7 is a signal receiving unit that receives reflected signals generated by the locking sensors 6a to 6n, and 8 is a detection unit that detects the position of the window 4 transmitted by the received signal. A display section 9 displays the position of the window 4 based on the detection result of the detection section 8. 10 is a changeover switch equipped with contacts a and b that alternately switches between the signal sending section 2 and the signal receiving section 7 for each frequency in accordance with a predetermined cycle to form a transmitting/receiving circuit, and f1 to fn each have a different frequency. Signals r1 to rn are signals sent out sequentially from the signal sending unit 2 at a predetermined period, signals returned by reflected signals from the sensors 6a to 6n, so-called echoes, 11 is a control unit that controls the detection system 1, and 12 is a control unit that controls the detection system 1. Power switch, P is control panel. Then, in each window, a frequency is selected corresponding to the transmission of a different frequency f1 to fn, and an echo r
Sensors 6a to 6n that return 1 to rn are respectively provided. A is the control section 11 and the signal sending section 2
c is a locking detection display means composed of a signal receiving section 7, a detecting section 8, a display section 9, and a control section 11.

(Operation) The operation will be explained based on the above configuration. First, when the power switch 12 of the control panel P is turned on, n types of signals of different frequencies are sequentially output from the signal sending unit 2 at a predetermined period via the changeover switch 10 to the contact a.
The connection causes the first antenna 3 to output.

When a signal current with a frequency f1 flows through the first antenna 3, a magnetic flux with a frequency f1 is generated by this signal current, and at this time, the lock 5 of the sensor 6a, which has a unique frequency selection characteristic that resonates with the frequency f1, is activated. When the lock is locked, the contacts c and d, the contacts e and h, and the contacts g and i are connected, and the second antenna 3A is formed into a closed circuit, that is, the circuit of the sensor 6a is formed into a loop antenna shape. As a result, a current is generated in the second antenna 3A due to electromagnetic induction of the signal current flowing in the first antenna 3.

At this time, contact a of the changeover switch 10 is switched to b at a predetermined timing. This allows the first
The magnetic flux from the second antenna 3A disappears, and the second antenna 3A
An echo r1 arises from. A signal current is generated in the first antenna 3 due to the electromagnetic induction of this echo r1, this signal current is received by the signal receiving section 7, and the position of the window having this frequency as a unique frequency is detected by the detecting section 8. The number of the window position on the display section 9 is displayed by lighting.

The changeover switch 10 is then switched from the contact b to the contact a, and the signal current of the frequency f2 flows from the signal sending part 2 to the first antenna 3, and thereafter, the signal current is repeated in the same manner one after another up to the frequency fn. Signal currents of different frequencies are passed through the first antenna 3, and at this time, the positions of all locked windows are displayed on the display section 9. Then, signal currents having frequencies from f1 to fn are repeatedly sent to the antenna 3 again at a predetermined period, and the same operation is performed.

Next, FIGS. 7 and 8 show locks of different shapes used in this embodiment. FIG. 7 shows the lock portion 5a of the above lock 5.
A lock 5A formed on a single blade 5d instead of
A lock groove 4d into which the blade 5d is inserted and locked is provided in the inner frames 4a, 4a. Figure 8 shows the inner frames 4a, 4a.
After the inner frame 4a is closed, a through lock hole 4e is provided at the bottom corner of the inner frame 4a to pass through the inner frame 4a in the width direction,
By inserting the conductive pin 5e constituting the lock 5B into the through-lock hole 4e, the window 4 is locked and at the same time a closed circuit of the sensors 6a to 6n is formed. 5f is a string that ties the conductive pin 5e to the inner frame 4a. The operation of locking the locks 5A and 5B is exactly the same as in the above embodiment, so detailed explanation will be omitted.

It should be noted that the shape and structure of the lock is not limited to the above-mentioned embodiment, but a crescent lock is combined with a reed switch or a microswitch and connected to the second antenna 3A with a lead wire w, so that when the lock is locked, the sensors 6a to 6n are activated. It is sufficient to use a lock with a structure that allows a closed circuit to be formed when the lock is locked, such as a structure in which the circuit is a closed circuit.

Further, another embodiment of the present invention will be explained based on FIGS. 9 to 11. FIG. 9 is a control circuit block diagram showing another embodiment, FIG. 10 is a side view of the main part configuration of another embodiment in which a crescent lock and a reed switch are combined, and FIG. 11 is a control circuit block diagram showing another embodiment in which a crescent lock and a microswitch are combined. FIG. 2 is a side view of the main part configuration of the embodiment.

Note that the same or corresponding parts as in the above embodiment are denoted by the same reference numerals. In FIGS. 9 to 11, 1A is a wireless window opening/closing detection system, and 2A is a signal generation means A1.
9A is a display section that constitutes the unlocking detection display means C1. 5c is the crescent lock (hereinafter referred to as the lock), 5g is the locking lever of the crescent lock 5c, 5h
is a locking angle, 5i is a permanent magnet that is a magnetic generation element M, 3a is a reed switch that is a magnetic detection element Ms that is connected to both ends of the second antenna 3A with a lead wire w, and turns on and off the circuit. As shown in FIG. 10(a), the lock 5c
The reed switch 3a is configured to be turned off when the door is locked and turned on when the door is unlocked. Reference numeral 6p denotes an unlocking sensor which is a reply means B1 consisting of an antenna 3A, a lock 5c, and a capacitor and a resonator (not shown). Also,
13 is a microswitch, and this microswitch 13 is connected to both ends of the antenna 3A with lead wires w.
As shown in FIG. 11(a), when the lock 5c is locked, it is turned off, and when it is unlocked, it is turned on.

The operation of the above configuration will be explained.

In FIG. 9, first, when the power switch (not shown) of the wireless window opening/closing detection system 1A is turned on, the signal sending section 2A generates a signal current of a predetermined frequency f to turn on a changeover switch (hereinafter referred to as a switch). Send on 10. At this time, at a predetermined timing, the contact a of the switch 10
is connected, a signal current is passed through the first antenna 3, and a magnetic field is formed by this signal current of frequency f. At this time, when one of the locks 5c among the plurality of windows 4 is unlocked, the unlock sensor 6p of that window is activated by the reed switch 3a being turned on by the action of the permanent magnet 5i provided on the lock 5c. A loop-shaped closed circuit is formed, and a current is generated in the second antenna 3A by electromagnetic induction from the first antenna 3.

[0020] Then, at a predetermined timing, the switch 10 is turned on.
When the contact point a is switched to the contact point b, the sending signal current to the antenna 3 disappears and the magnetic flux disappears, and an echo r is generated from the second antenna 3A. A signal current is generated in the first antenna 3 due to the electromagnetic induction of this echo r, and this signal current is received by the signal receiving section 7 and detected by the detecting section 8, indicating that there is an unlocked window on the display section 9A. to be displayed. This allows the supervisor to immediately recognize that the window has been unlocked and take prompt action. If an alarm is issued at the same time as the unlocking is displayed, abnormal intrusion can be accurately prevented by the alarm sound.

Since the operation of the combination of the crescent lock 5c and the microswitch 13 shown in FIG. 11 is exactly the same, detailed explanation will be omitted.

As described above, in the wireless window opening/closing detection system of the present invention, a resonant circuit is constructed using a large Q crystal oscillator, ceramic resonator, etc. for the locking and unlocking sensor. Compared to the resonant circuit formed by Not only does the distance increase significantly, but the resonant frequency band becomes extremely narrow, making it easy to increase the number of controllable channels, making it possible to control a large number of lock sensors with one control panel. Furthermore, since locking and unlocking are detected using electromagnetic induction, a battery is not required in the locking and unlocking sensor sections, and the sensor section is composed only of passive components, resulting in an extremely simple structure. As a result, the cost including the installation cost of the window opening/closing detection system is significantly reduced, and a wireless window opening/closing detection system that not only makes the system extremely easy to maintain and manage but also has excellent safety features is obtained. Furthermore, the locking/unlocking sensor is small and compactly arranged in the window frame, resulting in a good appearance.

Note that the present invention is not limited to the above-mentioned embodiments, and the antenna may be constructed of an outer frame depending on the structure of the window. Further, an electric wire may be arranged within the window frame instead of the window frame, and the antenna may be configured with this electric wire.

[0024]

Effects of the Invention As explained above, according to the present invention, a reply means using a resonator with a large Q is arranged for each of a plurality of windows to detect whether the window is locked or unlocked. Detecting and displaying a reflected signal generated by locking a window from a replying means having a unique frequency selectivity corresponding to the transmitted signal in response to transmission from a signal generating means that transmits a signal at a predetermined period; Furthermore, in response to the transmission of a predetermined frequency, a reflected signal generated from the reply means when one of the plurality of windows is unlocked displays a display to notify that the window has been unlocked. Compared to conventional systems that use a resonant circuit formed by a coil and a capacitor, the attenuation of the reflected signal is gentler, and the level of the reflected signal is higher when the switch is switched from transmit mode to receive mode, making it easier to detect the reflected signal. In addition, the detection distance for reflected signals is significantly extended, and
Since the width of the resonant frequency band becomes very narrow, it becomes easy to increase the number of channels that can be controlled, and it becomes possible to centrally detect the opening and closing of many windows using one control panel.

Furthermore, since locking and unlocking are detected using electromagnetic induction, batteries are not required for locking and unlocking detection.
The detection part can be composed entirely of passive components, making the structure extremely simple. This significantly reduces the cost, including the installation cost, of the detection system, and provides a wireless window opening/closing detection system that is not only extremely easy to maintain and manage, but also extremely safe. Furthermore, since the reply means is very small and unobtrusive, it can also have a good appearance.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a main part configuration of a wireless window opening/closing detection system showing an embodiment of the present invention.

FIG. 2 is a control circuit block diagram of the window opening/closing detection system according to the embodiment.

FIG. 3 is a front view of the structure of a window to which a lock of the embodiment is attached.

FIG. 4 is a perspective explanatory view showing the structure of the lock of the embodiment.

FIG. 5 is an explanatory diagram of the main part configuration of the locking sensor of the embodiment.

FIG. 6 is a circuit diagram of a lock sensor according to an embodiment.

FIG. 7 is a perspective view showing the structure of a main part of a lock having a different shape according to an embodiment.

8A and 8B are a perspective view and a plan view showing the structure of a main part of a lock having a different shape according to an embodiment. FIG.

FIG. 9 is a control circuit block diagram of a wireless window opening/closing detection system showing another embodiment of the present invention.

FIG. 10 is a side view showing the structure and operation of the crescent lock used in the above other embodiment.

FIG. 11 is a side view showing the configuration and operation of a different crescent lock according to another embodiment of the present invention.

[Explanation of symbols]

1,1A Wireless window opening/closing detection system 4 Window 4a Inner frame of window 4c Window outer frame 5, 5A, 5B, 5C tablet 10 Selector switch A, A1 Signal generation means B, B1 Reply method C Lock detection display means D　Unlock detection display means In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (2)

[Claims] Claim 1: A signal generating means for generating signals of a plurality of different frequencies and sequentially transmitting the signals at a predetermined period; a loop antenna for transmitting and receiving signals; and a loop antenna disposed in each of the frames of a plurality of windows. a plurality of reply means including a resonator with a large Q that generates a reflected signal in response to a transmission signal from the signal generation means at a unique frequency set for each window by locking each window; lock detection display means for detecting a reflected signal from the means and displaying the position of the window transmitted by the frequency of the reflected signal; the signal generating means and the lock detection display means for each frequency in accordance with the predetermined period; and a changeover switch that connects to the loop antenna to alternately form a transmitting circuit and a receiving circuit, and the replying means includes a coil-doubling switch formed by the window frame and a lock having a switch function. A wireless window opening/closing detection system comprising a loop antenna, a capacitor, and the resonator. 2. A signal generating means for generating and transmitting a signal of a predetermined frequency; a loop antenna for transmitting and receiving signals; and a loop antenna for transmitting and receiving signals, each of which is disposed in the frame of a plurality of windows. A plurality of reply means each including a resonator with a large Q that generates a reflected signal in response to the transmission from the signal generation means, and an unlocking means that detects the reflected signal from the reply means and displays a notification indicating that the window is unlocked. a detection display means, a changeover switch that switches between the unlock detection display means and the signal generation means at a predetermined timing and connects to the loop antenna to alternately form a transmitting circuit and a receiving circuit; A wireless window opening/closing detection system characterized in that the means comprises a loop antenna that also serves as a coil formed by the frame of the window and a lock having a switch function, a capacitor, and the resonator.