JPH06251280A - Wireless security system - Google Patents

Abstract

PURPOSE:To make possible the wide-range application of the locking of various opening parts, and the detection and monitoring of remote control information, security information, etc., by arranging controller part antennas of the system in vertically upper and lower layers. CONSTITUTION:Plural loop antennas are arranged as the antenna 4 of a controller part 1 in the vertical upper and lower layers and connected in in-phase relation, and the antenna A of a sensor part 6 is made nondirectional. Consequently, the magnetic flux of a magnetic field is substantially constant and intense, specially, between both the loops. Consequently, the height-directional communication range can be widened and control over plural controlled equipments such as the opening and closing of sliding doors and turning-ON/OFF operation for lighting can accurately be performed through remote operation without considering, specially, directivity in three dimensions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless security system for wirelessly monitoring security / disaster prevention information regarding a plurality of openings such as windows and doors of a building.

[0002]

2. Description of the Related Art An example of a conventional security system of this type is disclosed in, for example, Japanese Patent Laid-Open No. 62-27819.
A crime prevention device as shown in FIGS. 5 and 6 has been proposed and disclosed. FIG. 5 is a front view thereof, and FIG. 6 is a circuit diagram.

In FIG. 5, reference numeral 11 shows the entire system. 12 is a glass window frame, 13a and 13b are a pair of sliding glass doors, 14a and 14b are vertical stiles of each glass door, 15 is a crescent lock, and 15a and 15b.
Shows a rotation lever and an engaging claw for locking. 20 is an oscillator composed of Colpitts oscillator circuit, 17 is a coil on the door side,
Reference numeral 21 is a main controller (master unit) that controls monitoring / control of information signals, and 24 and 27 are transmission lines.

Further, in FIG. 6, 23 is a coil of the Colpitts oscillation circuit of the oscillator 20, 24 is a signal line, and 25 is
A movable glass door-side circuit portion arranged in the upper space of the vertical stile 14b, which has a coil 17 and is connected to a reed switch 26 through a signal line 27.

Next, the operation of the above configuration will be described. When the glass door 13a is opened and the coil 23 on the oscillator 20 side and the coil 17 on the glass door 13a side are not in the facing positional relationship, the oscillator 20 oscillates at the first oscillation frequency. Further, the glass door 13a is closed, and both coils 2
Although 3 and 17 are in the facing positional relationship, when the turning lever 15a and the engaging claw 15b are not engaged with each other in the unlocked state,
The coil 17 is short-circuited by the reed switch 26 and oscillates at a second oscillation frequency different from the first frequency.

Further, when the turning lever 15a and the engaging claw 15b are engaged and locked in this state, the main controller 21 oscillates at a third different oscillation frequency, thereby causing the main controller 21 to move to the glass door 13a. It is configured so that it can be identified / monitored whether it is opened / closed or locked.

As described above, the transmission line for transmitting the monitoring information by the interaction of electromagnetic induction can be made wireless, but if the required transmission distance between the movable side circuit section 25 and the oscillator 20 becomes large, the coil 23 side will be. There is a problem that the location of the oscillator 20 is restricted because the reception level is significantly attenuated.

Therefore, for example, as a signal transmitting means for this kind of induced magnetic field, a constant magnetic field strength is obtained in a plane (X and Y directions) to widen the communication range, and for example, even in a trackless or unmanned vehicle. An applicable induction magnetic field type transporting device is disclosed in Japanese Patent Laid-Open No. 164817/1985.

[0009]

However, the above-mentioned proposal example is a means for obtaining a substantially constant magnetic field strength in the XY plane, so that this type of wireless security system is used. When applied to, for example, a sliding door like the above-mentioned conventional example, it can be applied, but for example, remote control information such as rotary doors or other types of general opening locks, fire information, etc. Transmission, etc. X-
When a communication range in the vertical height Z direction of the Y plane is required, its application range is limited.
The purpose is to provide a means for expanding the communication range in the height direction by obtaining a strong magnetic field that is substantially constant in the direction or outward from the center.

[0010]

Therefore, in the present invention, a wireless security system of this type is
(1) A transmitter, a receiver, a controller, a display, and a control unit including a plurality of magnetic field transmitting / receiving antennas, and a sensor unit including a magnetic field transmitting / receiving antenna, a resonator, and a switch, and (2) The plurality of magnetic field transmitting / receiving antennas are arranged in a vertically upper and lower hierarchical form, and (3) the plurality of magnetic field transmitting / receiving antennas are connected to either in-phase or anti-phase, respectively, and (4) the sensor unit magnetic field. It is intended to achieve the above-mentioned object by making the transmitting and receiving antennas non-directional.

[0011]

With the above-described structure of the present invention, a strong magnetic field region that is substantially constant in the vertical direction of the antenna wire on the controller side or outward from the center thereof can be obtained, so that the communication range in the height direction can be expanded. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A control system using an induction magnetic field transmitting / receiving antenna according to the present invention will be described below based on embodiments. FIG. 1 is a schematic configuration diagram of an embodiment of the control system,
FIG. 2 shows a wiring diagram of a main part of the remote control unit.

(Structure) In FIGS. 1 and 2, reference numeral 1 denotes an induction magnetic field transmission / reception control system (controller) for, for example, a lighting fixture. Reference numeral 2 is a signal generator for generating a plurality of signals having different frequencies and sequentially transmitting the signals at a predetermined cycle. Reference numeral 3 is a changeover switch for switching between transmission and reception at a predetermined cycle. A loop antenna formed by printing on a printed circuit board or the like for transmitting a signal sent from the signal generator 2 to the space and receiving a reply (echo) from a remote control unit (hereinafter, abbreviated as “remote control”) 5. Reference numeral 6 denotes a sensor part, and 6a and 6b are arranged in the remote controller 5, and two coils are arranged in positions close to each other and orthogonal to each other, that is, in a T shape, and mutual inductance is substantially zero. , 6c is a capacitor, 6
Reference numeral d is a crystal oscillator, and reference numeral 7 is a switch for turning on / off the lighting equipment.

The coils 6a and 6b constitute an induction magnetic field transmitting / receiving antenna A capable of transmitting and receiving magnetic waves in all directions on the XY plane. The coils 6a and 6b, the capacitor 6c, and the crystal unit 6d. The remote controller 5 is composed of the switch 7 and the switch 7. 2A and 2B show two circuit examples in which the coils 6a and 6b are orthogonally connected in parallel and in series. Reference numeral 8 is a detection unit for the received signal sent from the changeover switch 3, 9 is a processing unit for this detection signal, and 10 is for controlling the turning on / off of the lighting equipment by turning on / off the switch 7 of the remote controller 5. Is a control unit of.

Further, f _{1 to} f _n are signals of a plurality of frequencies generated and transmitted by the signal generator 2, and r _n is transmitted from the loop antenna 4 in a predetermined cycle in response to the changeover of the changeover switch 3. A signal that is returned from the sensor unit 6 in response to the transmission signal of the frequency f _n is a so-called echo, and P indicates a control panel of the controller 1.

The feature of this embodiment is that, as the antenna 4 of the controller section 1, a plurality of loop antennas 4a and 4b are arranged in vertical vertical layers as shown in FIG. The loop antennas 4a and 4b are connected in phase, and the antenna A of the sensor unit 6 is omnidirectional. For this reason, as shown in FIG. 3B, the magnetic flux F of the magnetic field is substantially constant, especially between both loops, as compared with the case of the single loop antenna 4, and a strong magnetic velocity F _0.
Can be obtained.

(Operation) Next, the operation of the configuration will be described. First, when a power switch (not shown) of the control panel P of the controller 1 is turned on, the signal generator 2 sequentially outputs n different frequencies at a predetermined cycle. The signal outputs of f _{1 to} f _n are transmitted from the loop antenna 4 connected in the same phase by connecting the contact a through the changeover switch 3.

Now, assuming that the frequency f _n is a frequency for lighting control, a signal current having a frequency f _n flows through the loop antenna 4 at a predetermined cycle, and the signal current causes the frequency f _n to flow.
A magnetic flux of _n is generated, and at this time, the sensor unit 6 for lighting control has a unique frequency selection characteristic that resonates at the frequency f _n .
Resonates when the switch 7 is turned on. At this time, when the contact a of the changeover switch 3 is switched to b at a predetermined timing, the magnetic flux from the loop antenna 4 disappears by this, and the echo r _n from the coils 6a and 6b also serving as the antenna A.
Occurs. A signal current is generated in the loop antenna 4 of the controller 1 by the electromagnetic induction of the echo r _n , the signal current is received by the detecting unit 8, and the processing unit 9 controls the controlled device, that is, the illumination that has the frequency f _n as a unique frequency. Power is turned on / off. The change-over switch 3 is subsequently switched from the contact b to the contact a, the signal current of the frequency of f ₁ flows again from the signal generator 2 to the loop antenna 4, and the same is repeated again until the frequency of f _n. A signal current having a frequency is passed through the loop antenna 4, and ON / OFF control of a plurality of controlled devices controlled by a unique control frequency can be performed.

As described above, according to this embodiment, it is possible to generate a substantially constant magnetic field in the vertical direction of the loop antenna 4 on the controller 1 side, so that the communication range in the height direction is expanded. It is possible to accurately control a plurality of controlled devices, for example, opening / closing of shutters, turning on / off lights, etc. by remote control without the need to consider the directivity in the three-dimensional directions. Become.

(Other Embodiment) Next, another embodiment of the arrangement of the loop antenna 4 according to the present invention is shown in FIG. In this embodiment, the loop antennas 4a and 4b arranged in the upper and lower layers of the controller unit 1 are connected in phase with each other in the above embodiment, whereas the loop antennas 4a and 4b are connected in opposite phase, and the other cases are exactly the same. As shown in FIG. 4, the magnetic flux distribution can expand the communication range in the antenna height direction by generating a strong magnetic field outward from the center in the vertical direction of the antenna wire on the controller 1 side. The same effect as in the above embodiment can be obtained.

[0021]

As described above, according to the present invention, since the controller section antennas of the wireless security system are arranged in the vertical upper and lower layers, the communication range in the height direction of the antenna wire can be widened. It has become possible to apply a wide range of applications such as locking various openings, remote control information, and disaster prevention information detection / monitoring.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a control system according to an embodiment.

[Fig. 2] Fig. 1 Wiring diagram of main parts of remote control unit

[Fig. 3] Fig. 1 Antenna configuration / operation explanatory diagram of controller unit

FIG. 4 is a view corresponding to FIG. 3A of another embodiment.

FIG. 5 is a front view of an example of a conventional crime prevention system.

FIG. 6 is a circuit block diagram thereof.

[Explanation of symbols]

 1 Controller 2 Signal Generator 4, 4a, 4b Loop Antenna 5 Remote Controller A Antenna 6 Sensor 6a, 6b Coil 6d Crystal Resonator 7 Switch 8 Detector 9 Processor 10 Controller

Claims (4)

[Claims] 1. A wireless system comprising: a control unit including a transmitter, a receiver, a controller, an indicator, and a plurality of magnetic field transmitting / receiving antennas, and a sensor unit including a magnetic field transmitting / receiving antenna, a resonator, and a switch. Security system. 2. The wireless security system according to claim 1, wherein the plurality of magnetic field transmitting / receiving antennas are vertically arranged in a hierarchical structure. 3. The wireless security system according to claim 2, wherein each of the plurality of magnetic field transmitting / receiving antennas is connected in either in-phase or anti-phase. 4. The wireless security system according to claim 3, wherein the sensor magnetic field transmitting / receiving antenna is omnidirectional.