JP2014099157A - Intrusion detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intrusion detection device capable of easily and accurately operating the expansion of a caution area in the case of using a plurality of intrusion detection sensors, and easily wiring each sensor, and securing waterproofness.SOLUTION: An intrusion detection device includes: a plurality of intrusion detection sensors 1 for detecting the intrusion of an object in a caution area, and for outputting a caution signal; and a bracket 2 having a single device mounting surface 2c and a plurality of sensor mounting surfaces 2d on which the intrusion detection sensors 1 are respectively mounted such that different predetermined angles are held. The bracket 2 has a hollow part for wiring the intrusion detection sensors 1. Also, the intrusion detection sensor 1 includes an optical section 3 having a main unit 3A including a detection element 30 and a unit holder 4 for freely rotatably supporting the main unit 3A. The caution area is adjusted in a variable direction in accordance with the rotation of the main unit 3A.

Description

  The present invention relates to an intrusion detection apparatus having a plurality of intrusion detection sensors for detecting an object such as a human body that has entered a warning area.

  As a general intrusion detection sensor of this type, a passive infrared detection system (PIR) or an active infrared ray including an optical section including a detection element for detecting an object in a warning area and a light collecting section such as a lens. A detection method (AIR) is known.

  In general, in order to expand the alert area, a plurality of intrusion detection sensors are installed according to the size and shape of the site (area) to be alerted. At this time, the plurality of intrusion detection sensors are installed separately, or are arranged side by side or vertically (for example, Patent Document 1). There is also a method in which a general L-shaped angle plate is used, one of the L-shaped plates is fixed to a wall or the like, and two intrusion detection sensors are installed back-to-back on the other surface protruding outward. Conceivable.

JP 2010-146289 A

  However, if a plurality of intrusion detection sensors are installed side by side or vertically, the number of wires to the control panel for controlling the entire apparatus increases, which takes time for construction. In addition, when the L-shaped angles are used to install the sensors back to back, the wiring between the sensors becomes complicated and the wiring is exposed to the outside, so that waterproof equipment for wiring is also required.

  In addition, when the plate surface of the L-shaped angle is used as the sensor mounting surface, the accuracy of the reference surface such as a vertical surface does not necessarily come out on the plate surface, so when mounting the intrusion detection sensor to the L-shaped angle, It is necessary to adjust each time to the mounting state that matches the reference surface, and the construction becomes complicated.

  By the way, there is a case where it is desired not only to expand the warning area but also to change its direction. As shown in FIG. 10A, the intrusion detection sensor 70 includes, for example, a cover 73 provided with a lens (light collection section) 72 on an optical section 71 having a detection element 60, and the detection element 60 is connected to the optical section 71. The direction of the warning area is changed by this horizontal rotation. FIGS. 10B and 10C show variable states of different areas. In this case, since the direction variable setting is performed on the basis of the sensor mounting surface of the intrusion detection sensor 70, if the sensor mounting surface is not accurately held, the setting of the variable direction based on this is also shifted. There is a great need to accurately hold the surface.

  The present invention provides an intrusion detection apparatus capable of easily and accurately constructing a warning area when using a plurality of intrusion detection sensors, as well as easily wiring and securing waterproofness in each sensor. The purpose is that.

  In order to achieve the above object, an intrusion detection device according to the present invention includes a plurality of intrusion detection sensors that detect an intrusion of an object in a warning area and output a warning signal, a single device mounting surface, and each intrusion. A bracket having a plurality of sensor mounting surfaces for mounting the detection sensors so as to hold different predetermined angles, and the bracket has a hollow portion for wiring between the intrusion detection sensors.

  According to this configuration, since the plurality of intrusion detection sensors are attached to the bracket while maintaining different predetermined angles, the warning area can be easily and accurately expanded when the plurality of intrusion detection sensors are used. At the same time, since the bracket has a hollow portion, the wiring between the sensors becomes easy and the wiring is not exposed to the outside, so that the waterproofness related to the wiring can be secured.

  In the present invention, the intrusion detection sensor includes an optical section having a main unit including a detection element and a unit holder that rotatably supports the main unit, and the direction of the warning area can be changed by the rotation of the main unit. It is preferable to adjust to. In this case, since the sensor mounting surface can be set accurately, even if the direction of the warning area is variable, the extension of the warning area can be performed easily and accurately.

  In the present invention, the bracket has a T-shape in a plan view having a head portion and a body portion that protrudes perpendicularly from the head portion, and both side surfaces of the body portion are the sensors. A mounting surface is preferred. Therefore, the warning area can be expanded with a simple configuration.

  Preferably, a separate intermediate box is attached to the tip of the body portion of the bracket, and another intrusion detection sensor that holds a predetermined angle different from each intrusion detection sensor is attached to the intermediate box. In this case, the warning area can be further expanded by adding another intrusion detection sensor.

  Preferably, when the warning signal is transmitted wirelessly, the intrusion detection sensor is attached to the body of the bracket via a wireless battery box, and the upper surface of the battery box is covered with a cap. Yes. In this case, it is possible to obtain an external appearance in which the apparatus main body is integrated.

  Since the intrusion detection device of the present invention is attached with a plurality of intrusion detection sensors being held at different predetermined angles to the bracket, the warning area can be easily and accurately expanded when using a plurality of intrusion detection sensors. . At the same time, since the bracket has a hollow portion, the wiring between the sensors becomes easy and the wiring is not exposed to the outside, so that the waterproofness related to the wiring can be secured.

(A), (B) is a perspective view which shows an example of the intrusion detection apparatus which has the some intrusion detection sensor which concerns on 1st Embodiment of this invention. It is a disassembled perspective view of the same intrusion detection apparatus. (A)-(D) are the partial exploded views of an intrusion detection sensor same as the above. (A), (B) is a front view showing the rotation state of the optical section, (C), (D) are a cross-sectional view taken along line CC of (A), and a cross-sectional view taken along line DD of (B). It is. (A), (B) is the VV sectional view taken on the line of FIG. 1, (C), (D) is a top view which shows the alert area which has several narrow area of (A), (B), respectively. . (A)-(C) are top views which show a warning area. (A) is a perspective view which shows an example of the intrusion detection apparatus which concerns on 2nd Embodiment of this invention, (B) is a top view which shows the alert area. It is a disassembled perspective view of the same intrusion detection apparatus. (A), (B) is a perspective view which shows the modification of an intrusion detection sensor. (A)-(C) are explanatory drawings which show the conventional intrusion detection apparatus.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1A is a perspective view seen from the front side showing an example of an intrusion detection device having a plurality of intrusion detection sensors according to the first embodiment of the present invention, and FIG. 1B is a perspective view seen from the back side. is there. 2 is an exploded perspective view of the intrusion detection device, and FIGS. 3A to 3D are partial exploded views thereof.

  In this example, a wired system that performs power supply and signal transmission in the intrusion detection sensor 1 by wire is used. For example, two intrusion detection sensors 1 and 1 are connected to the bracket 2 as shown in FIG. It is attached to the wall K and the pillar via. The bracket 2 has a T-shape in plan view, which includes a head portion 2a and a body portion 2b that protrudes outward (forward) in the vertical direction Y from the head portion 2a. The back surface of the head 2a is attached to a wall K or the like, and the intrusion detection sensors 1 and 1 are attached to both side surfaces of the trunk 2b.

  The intrusion detection sensor 1 is configured by, for example, a passive infrared detection system (PIR), and a control panel for controlling the entire intrusion detection device is provided indoors (not shown). The microcomputer mounted on the control board in the intrusion detection sensor 1 receives far infrared rays emitted from an object such as a human body illegally entering the alert area W (FIG. 5) by the detection element 30 (FIG. 2). When the electrical signal indicating the amount of received light changes to a certain level or more, a human body detection signal is issued, a warning signal is output, and control is performed so as to be input to the indoor control panel.

  The warning area W is formed by a light collecting section such as the optical section 3 including the detection element 30 in the intrusion detection sensor 1 and the lens 39. As shown in FIG. 3A, the optical section 3 includes a main unit 3A having a detection element 30 and a unit holder 4 that rotatably supports the main unit 3A. In this example, the main unit 3A of the optical section 3 is rotated horizontally, and the lens 39 provided on the cover 40 attached to the optical section 3 is fixed to change the direction of the warning area W. Have.

  As shown in FIG. 2, for example, two PIR sensors 30 and 30 that are detection elements are provided at the upper and lower portions on the front side (front side in the figure) of the main unit 3 </ b> A. The unit holder 4 is fitted with a lens-covered cover 40 integrally formed with a plurality of divided lenses 39 such as a Fresnel lens on the front surface. The unit holder 4 is screwed using a plurality of screw holes 33. In the alert area W, a plurality of narrow areas are formed by the lens 39 divided into a plurality of parts. The lens 39 may be provided separately from the cover 40, or a mirror or the like may be used instead of the lens 39.

  The intrusion detection sensor 1 on the back side in FIG. 2 is configured in the same manner except that it is in the opposite direction. The intrusion detection apparatus in the assembled state is in a form as shown in FIG. 1A, and is supported by a support member such as a wall K or a pillar at an installation location where intrusion warning is to be performed.

  The T-shaped bracket 2 of FIG. 2 has a single device mounting surface 2c on the back side of the head 2a extending in the horizontal direction X and the vertical direction Y, and a plurality of screw holes 32 are used on this surface 2c. Screwed to the wall K. Both side surfaces 2d of the body portion 2b projecting forward at the center portion opposite to the device mounting surface of the head 2a and extending in the vertical direction Y are sensor mounting surfaces for holding the intrusion detection sensors 1 and 1 respectively. Since the sensor mounting surface 2d is accurately set as a reference surface in advance, the intrusion detection sensors 1 and 1 are installed on the sensor mounting surface 2d, for example, back to back. It becomes possible to attach it accurately to the surface 2c).

  The T-shaped bracket 2 has a hollow portion 5 in the head portion 2a and the trunk portion 2b. The head 2a is provided with a plurality of screw holes 32 for attaching the T-shaped bracket 2 to the wall K. The body portion 2 b is provided with storage recesses 6 on both sides of the central hollow portion 5 to store the intrusion detection sensor 1. The hollow portion 5 and the storage recess 6 communicate with each other through a through hole 7. As shown in FIG. 1B, the sensors 1 and 1 are wired in the bracket 2 by the hollow portion 5 of the T-shaped bracket 2 and the internal space S of the through hole 7.

  By using this T-shaped bracket 2, the position (sensor mounting surface) that serves as a reference for each intrusion detection sensor 1 can be accurately maintained as compared with the conventional case where, for example, a general-purpose L-shaped angle is used. Wiring between the detection sensors is facilitated, and each wiring is performed in the bracket 2 so that the wiring is not exposed, so that waterproofing equipment for wiring is not required.

  Next, the rotation structure in the optical section 3 will be described. As shown in FIG. 3A, the main unit 3A has a columnar shape with a half on the back side, and is entirely supported by the unit holder 4 so as to be horizontally rotatable around the rotation shaft 31. . As shown in FIG. 3B, a plurality of guide groove portions 11 are provided along the circumferential direction on the back side of the main unit 3A, and a convex portion 12 is provided at the center of the unit holder 4 in FIG. Is provided. An angle holding portion 15 is configured by the guide groove portion 11 and the convex portion 12 of the main unit 3A. The main unit 3A is held at an arbitrary horizontal rotation angle by manually moving the main unit 3A in the horizontal direction and fitting the convex portion 12 into the predetermined guide groove portion 11.

  As shown in FIG. 3A, rotary bearings 21 and 22 are provided to support the main unit 3 </ b> A rotating around the rotary shaft 31 at the upper and lower portions of the unit holder 4, and the front side of the lower rotary bearing 22 is provided. Is provided with a display unit 23 for displaying the rotation angle of the main unit 3A.

  By the way, when the warning area W is expanded with the plurality of intrusion detection sensors 1 using the T-shaped bracket 2 described above, it is preferable that the warning area W does not contact the wall surface K as shown in FIG. . As shown in FIG. 6B, if the alert area W is in contact with the wall surface K, a malfunction may be caused by the wall surface itself or its temperature change. In the present invention, in order to eliminate this cause of malfunction, a configuration for automatically setting a warning area W, which will be described later, and an area offset of the warning area are provided.

  First, a configuration for automatically setting the alert area W in order to prevent malfunction will be described. The intrusion detection sensor 1 is provided in one of the optical section 3 and the lens 39 that is a light collecting section, and optically adjusts the optical path between the sections 3 and 39 forming the narrow area of the warning area W. An area adjustment unit 35 that is provided on the other side, and a position setting unit 45 that engages with the area adjustment unit 35 and sets the position thereof. The area adjustment unit is a variable shutter 35 that optically blocks (shields) an optical path that forms at least one narrow area, and the position setting unit is a position setting rib 45 that engages with the variable shutter 35 to perform position setting. is there.

  As shown in FIG. 3A, the pair of left and right variable shutters 35, 35 in the optical section 3 includes a shutter piece 35a that blocks a narrow area, and an extended piece 35b that extends partially from the shutter piece 35a. And has an approximately L-shape, and the extended piece 35b is fitted into a groove of a position setting rib 45 to be described later, and its position is set. The variable shutter 35 is provided so as to be slightly swingable in the horizontal (left and right) direction, has a color that is difficult to see from the lens, for example, a transparent color, and has a substantially L shape, and is provided on both sides of the detection element 30. Are provided to be horizontally rotatable. The variable shutter 35 has an upper extension piece 35b fitted to the position setting rib 45, and the lower shutter piece 35a has an original shutter function. In this example, the variable shutter 35 is provided only in the upper detection element 30 among the upper and lower detection elements 30.

  Note that variable shutters may be provided both vertically and below. Moreover, the width of the warning area W can be adjusted by changing the horizontal variable range of the variable shutter.

  On the other hand, as shown in FIG. 3D, the position setting rib (cam) 45 having a plurality of recesses (grooves) juxtaposed along the rotation direction of the main unit 3A is fixed to the cover 40 so as to be detachable. ing. The position setting rib 45 has a different concave shape depending on the rotation angle of the variable shutter 35, and the concave portion of the position setting rib 45 and the extending piece 35b on the upper portion of the L-shaped variable shutter 35 are fitted. . The extension piece 35b is provided outside the lens effective range of the cover 40, and the warning area W can be changed without lowering the lens efficiency.

  As the main unit 3A of the optical section 3 rotates, the position of the variable shutter 35 changes. 4A is a front view when the main unit 3A is at a rotation angle of 0 ° and the detection element 30 faces the front direction, for example, and FIG. 4C is a cross-sectional view taken along the line CC in FIG. ) Is a front view when the main unit 3A is inclined at a rotation angle of about 45 °, and (D) is a DD cross-sectional view thereof.

  As shown in FIGS. 5C and 5D, the warning area W as a whole can be set with a plurality of narrow areas A to N arranged in the horizontal direction corresponding to the divided lenses a to n. Is formed. 5A is a cross-sectional view taken along the line VV in FIG. 1 showing a state in which the variable shutter 35 and the position setting rib 45 of the cover 40 are fitted in the case of FIG. As shown in FIG. 5C, a warning area W composed of narrow areas D to K is formed by the variable shutter 35 in FIG. 5A, for example, for the lenses d to k. The rotation angle of the display unit 23 displays the position D. FIG. 5B is a cross-sectional view taken along the line VV of FIG. 1 showing the state of FIG. As shown in FIG. 5D, a warning area W composed of narrow areas H to N is formed by, for example, the lenses h to n by the variable shutter 35 of FIG. The rotation angle of the display unit 23 displays the position G.

  Each recess of the position setting rib 45 has various different shapes, and has at least one inner surface shape such that the variable shutter 35 is positioned in each recess according to the rotation angle of the main unit 3A. Have. As shown in FIGS. 5A and 5B, the variable shutter 35 is positioned by, for example, the shape of the inner surface of the concave portion of the position setting rib 45 while slightly swinging (freely fitting) left and right. The variable shutter 35 with which the position setting rib 45 fixed to the cover 40 abuts by opening and closing the cover 40 at the rotation position of the main unit 3 </ b> A slightly changes the angle to the left and right to force the specific position setting rib 45. To the position of the recess.

  In the alert area W of FIG. 5C, since there is no malfunction due to contact with the wall K, for example, eight areas with narrow areas D to K are formed over a wide range of 90 ° or more. On the other hand, in the alert area W of FIG. 5D, since the contact with the wall K occurs at the end, one of the narrow areas G at the end is erased. Seven are formed in a narrow range of less than 90 °.

  In this case, an area in which the area in the front direction is offset to the left and right with respect to the front surface of the sensor by arranging a plurality of lenses so as to be in a desired area range corresponding to the setting of the rotation angle of the main unit 3A It has a configuration. In this example, the areas G and H are offset by a predetermined angle (for example, ± 5 to 10 °) to the left and right of the sensor front surface by the lenses g and h. That is, as shown in FIG. The narrow areas G and H are offset so that the narrow area H does not cover the wall K when rotated 45 ° to the right. If it is not offset, an area is formed at the center (front side of the sensor) of the narrow areas G and H. Therefore, when the main unit 3A is rotated, the narrow area on the front side of the sensor is applied to the wall K. become. If the narrow area is erased as a countermeasure against malfunctions, the warning area becomes considerably narrower than 90 °, and the area near the wall disappears, resulting in a warning leak.

  In this offset area configuration, for example, when the main unit 3A is rotated 45 ° to the right, the narrow area G is erased, and a desired warning area W slightly narrower than 90 ° of the narrow areas H to N. Is forming. At this time, as shown in FIG. 5B, the variable shutter 35 is engaged with the position setting rib 45 to block the optical path of the lens g. On the contrary, when the main unit 3A is rotated 45 ° to the left, the narrow area H is erased. In this way, a desired warning area W can be adjusted according to the rotation position of the main unit 3A.

  By combining the area offset of the warning area W, the configuration for automatically setting the area, and the T-shaped bracket, a narrow area where a malfunction occurs (a narrow area inside the wall as shown in FIG. 6C). By erasing G and H) with the variable shutter 35, the warning area W can be adjusted so that no malfunction occurs. In this way, it is possible to easily realize both expansion of the warning area W and reduction of malfunction risk.

  The second embodiment is a wireless system that wirelessly performs power supply and signal transmission in the intrusion detection sensor 1, and as shown in FIG. 7A, the three intrusion detection sensors 1, 1 have T in a plan view. It is attached to a wall or a column via a bracket 2 in the same manner as in the first embodiment. One intrusion detection sensor 1 and one intrusion detection sensor 1 are installed through the battery box 8 on both sides of the body portion 2b of the T-shaped bracket 2, and a separate intermediate is provided at the tip of the body portion 2b. One other intrusion detection sensor 1 is installed via a box 9. By adding another intrusion detection sensor 1, the warning area W can be further expanded. In this case, the through-hole 17 (broken line part of FIG. 8) is provided in the front surface of the trunk | drum 2b, and the cap 19 is provided in the upper part. Therefore, it is possible to obtain an external appearance in which the apparatus main body is integrated.

  FIG. 7B is a plan view showing a warning area by the three intrusion detection sensors. In this example, the bracket 2 is not attached to the tip of the corner of the wall K, but is attached to the wall near the corner. As described above, the entire warning area W can be expanded to an area range of, for example, 270 ° without causing the bracket 2 to largely protrude from the corner portion of the wall K. Also in this case, as described above, the warning area W can be expanded so as not to cause a malfunction by erasing the area covering the wall K by the variable shutter 35.

  In FIG. 8, which is an exploded perspective view of the intrusion detection device in FIG. 7A, the intrusion detection sensor 1 is installed via a battery (battery) box 8 to which a battery (not shown) for supplying power is mounted. Yes. In this example, a transmitter (not shown) is also provided in the battery box 8. When the human body detection signal from the intrusion detection sensor 1 is output to the transmitter, the transmitter wirelessly transmits an alarm signal, and this alarm signal is received by, for example, a receiver (not shown) installed indoors. The

  9A and 9B show a modification of the intrusion detection device. FIG. 9A is a wired system similar to that of the first embodiment, in which three intrusion detection sensors 1 are attached, and FIG. 9B is a wireless system similar to that of the second embodiment. Two sensors 1 are attached.

  As described above, according to the present invention, since a plurality of intrusion detection sensors are attached to the bracket at different predetermined angles, it is possible to easily and accurately construct a warning area when using a plurality of intrusion detection sensors. . At the same time, since the bracket has a hollow portion, the wiring between the sensors becomes easy and the wiring is not exposed to the outside, so that the waterproofness related to the wiring can be secured.

  Also, the risk of malfunction can be reduced by incorporating a configuration for automatically setting a warning area.

  In the above embodiment, the optical section is provided with the variable shutter and the cover is provided with the position setting rib. However, the optical section may be provided with the position setting rib and the cover may be provided with the variable shutter.

  In each of the above embodiments, the passive infrared detection method is applied to the intrusion detection sensor. However, the present invention is not limited to this, and for example, an active infrared detection method can be applied.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily consider various changes and modifications within the obvious scope by looking at the present specification. Accordingly, such changes and modifications are to be construed as within the scope of the invention as defined by the appended claims.

1: Intrusion detection sensor 2: Bracket 2a: Head 2b: Body 2c: Device mounting surface 2d: Sensor mounting surface 3: Optical section 3A: Main unit 4: Unit holder 5: Hollow portion 6: Storage recess 7: Through hole 8: Battery box 9: Intermediate box 15: Angle holding unit 30: PIR sensor (detection element)
35: Variable shutter 39: Condensing section (lens)
40: Cover with lens 45: Position setting rib W: Warning area A to N: Narrow area

Claims (5)

A plurality of intrusion detection sensors that detect the intrusion of an object in a warning area and output a warning signal;
A bracket having a single device mounting surface and a plurality of sensor mounting surfaces for mounting each intrusion detection sensor so as to hold different predetermined angles,
The bracket includes an intrusion detection device having a hollow portion for wiring between the intrusion detection sensors. In claim 1,
The intrusion detection sensor includes an optical section having a main unit including a detection element and a unit holder that rotatably supports the main unit, and the rotation of the main unit adjusts the warning area in a variable direction. Intrusion detection device. In claim 1 or 2,
The bracket has a T-shape in plan view, having a head and a trunk protruding vertically from the head,
An intrusion detection device in which both side surfaces of the body portion of the bracket are the sensor mounting surfaces. In claim 3,
An intrusion detection device in which a separate intermediate box is attached to the tip of the body portion of the bracket, and another intrusion detection sensor that maintains a predetermined angle different from each intrusion detection sensor is attached to the intermediate box. In claim 1 or 2,
When the warning signal is transmitted wirelessly, the intrusion detection sensor is attached to the body portion of the bracket via a wireless battery box, and the upper surface of the battery box is covered with a cap. apparatus.

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