KR100635843B1 - intrusion detection sensor - Google Patents

Abstract

It is an object of the present invention to provide a sensor for intrusion detection, in which an intruder is hard to be noticed while making the appearance and appearance of the building good by matching the light-receiving devices 1 and 2 with a simple structure.

In order to solve the said subject, the front and side surfaces of the transmitter 1 which transmits the infrared detection wave A for intrusion detection, or the receiver 2 which receives the irradiated detection wave A are a detection wave ( A) is covered by an inner cover 3 which transmits light and blocks external light, and this inner cover 3 is covered by an outer cover 4 to cover the outer cover 4. At the side surface portion, a side opening portion 41 is formed which exposes a passage portion of the detection wave A in the inner cover 3.

Description

Intrusion detection sensor

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows an example of the use condition of the intrusion detection sensor of 1st Embodiment of this invention.

2 is a front view of the sensor.

3 is a right side view of the sensor.

4 is a side cross-sectional view taken along the line IV-IV of FIG. 2.

5 is a cross-sectional view taken along line V-V of FIG. 4.

Fig. 6 is a plan sectional view showing an outer cover of the intrusion detection sensor of the second embodiment.

7 is a horizontal sectional view showing an outer cover of the intrusion detection sensor of the third embodiment.

Fig. 8 is a horizontal sectional view showing an outer cover of the intrusion detection sensor of the fourth embodiment.

* Description of the symbols for the main parts of the drawings *

DESCRIPTION OF SYMBOLS 1 Floodlight 10 Floodlight element

2: receiver 20: receiver

3: inner cover 4: outer cover

41, 41A: side opening 46: front opening

47: shutter 9: knockout part

A: infrared detector wave

The present invention relates to an intrusion detection sensor used to detect illegal intruders into a building or site.

Conventionally, such a sensor is composed of a light emitter and a light receiver which are mounted on a wall surface of a building, a window, a door pillar, or the like in an opposite shape. This light projector is provided with a light transmitting element for irradiating an infrared detection wave such as a beam-shaped near infrared ray, a base member to which it is mounted, and a cover covering and protecting the front and side surfaces of the light emitting element. The light receiver has a light receiving element for receiving a detection wave from the light transmitting element, a base member on which it is mounted, and a cover for covering and protecting the front and side surfaces of the light receiving element. When the detection wave irradiated from the light transmitting element toward the light receiving element is blocked or attenuated by the illegal intruder, the lamp is turned on or flashes or an alarm buzzer or siren is sounded based on the electric signal output from the light receiver side. An alarm may be issued, or the electrical signal may be used to notify the security company.

The above sensors are hardly affected by temperature, wind, etc., and in addition, since the intrusion detection zone can be set in a long range, they are frequently used in the boundary of the security object outdoors or around. However, when the above-mentioned light-receiving device is mounted outdoors, the light-receiving element of this light-receiver receives disturbance light, such as sunlight, other than the detection pie irradiated from the light-transmitting element. For this reason, accurate signal output cannot be performed under the influence of the disturbance light, and malfunction is likely to occur. Therefore, in order to prevent malfunction, the whole cover or a part thereof is formed of a filter material which transmits infrared detection waves and blocks or attenuates disturbance light in the other wavelength range. As this filter material, what colored resin, such as polycarbonate and acryl, in the color which interrupts external light is used. At this time, the colored cover is dark red or purple when transmitted to the sun, but the outer surface is black when the receiver is mounted on a wall or the like.

However, since the wall of a building is often painted white, when a black transmitter / receiver is mounted on the wall, not only will the appearance of the building deteriorate, but illegal intruders will be more likely to notice. Therefore, except for the passing portion of the detection wave of the cover, the other outer surface is painted in a color harmonizing with the building, but during this coating, it is necessary to mask the passing portion of the detection wave of the cover. It takes time and the workload becomes heavy. At this time, if a part of the detection wave passing portion of the cover is painted, the transmission of the detection wave is disturbed, so that a normal boundary cannot be obtained. As the material of the cover, acrylic or polycarbonate resin (PC) having excellent permeability to near infrared rays is used, and among these, PC having excellent mechanical strength and weather resistance is used more often. However, this PC cover is difficult to coat due to the characteristics of the material, so it is difficult to cope with painting.

It is therefore an object of the present invention to provide a sensor for intrusion detection, in which a transmitter / receiver can be harmonized with the color of a building with a simple configuration, making the appearance of the building good, and hardly noticed by intruders.

In order to achieve the above object, the intrusion detection sensor of the present invention, the front and side of at least one of the transmitter and the receiver receiving the irradiated detection wave irradiated infrared detection wave for intrusion detection, the detection wave Is covered by an inner cover that transmits light and blocks external light, and the inner cover is covered by an outer cover, and a side opening portion is formed in a side portion of the outer cover to expose a passage portion of the detection wave in the inner cover. It is. Here, the passing portion is a portion through which the detection wave exchanged between the transmitter and the receiver passes, and does not include a portion through which the detection wave passes in the direction not to be transmitted and received between the transmitter and the receiver.

The above-described detection sensor is mounted on a wall surface of a building or the like so that side surfaces of the transmitter / receiver face each other. Then, the illegally intruder is detected by transmitting and receiving the infrared detection wave through the side opening formed on the side surface of the outer cover of the transmitter / receiver. At this time, since most of the inner cover excluding the side opening is covered and covered by the outer cover, the exposed portion of the inner cover becomes small, making it difficult to see from the outside. Therefore, even if the inner cover is colored in a black color to prevent disturbance light, and the wall of the building is painted in white color, the outer cover is colored or painted in a color that matches the color of the building. The appearance is also good. In addition, by covering the inner cover with the outer cover, there is no need to apply a partly cumbersome coating to the cover as in the prior art, and furthermore, even if the inner cover is made of a PC made of excellent mechanical strength, In addition, it is possible to provide a sensor that is easy to paint and has a high mechanical strength by making a material having high mechanical strength.

In a preferred embodiment of the present invention, a knockout portion that can be punched by an external force is formed in the front portion of the outer cover, and the punching portion of the outer cover exposes the passage portion of the detection wave in the inner cover. An opening is formed. According to this structure, the freedom degree at the time of providing the said detection sensor can be improved, and versatility becomes rich. In other words, the detection sensor using the above-mentioned light-receiving light receiver is hardly influenced by temperature, wind, etc., and the beam-shaped detection wave is irradiated from the light-emitting light, and the intrusion detection zone can be set in a long range. . For this reason, although it is frequently used for the boundary of the guard object in the outdoors and surroundings, the positional relationship of the said transmitter / receiver is not necessarily constant, The light emission and the light reception angle of these transmitter / receivers are changed, for example, In some cases, the front of the transmitter and receiver may be opposed to each other. In such a case, it is possible to easily cope by punching the knockout part to form an opening in the front side of the outer cover, and transmitting and receiving light through the front opening part.

Moreover, in another preferable embodiment, the front opening part which exposes the passage part of the said detection wave in an inner cover is formed in the front part of the said outer cover, Moreover, at least the front opening part of this front opening part and the said side opening part is provided. The shutter which opens and closes is formed. This configuration also increases the degree of freedom when the intrusion detection sensor is provided, resulting in rich versatility. In other words, when the irradiation and the light receiving angle of the transmitter / receiver are changed, and the transmitter / receiver is installed opposite to each other, the shutters open and close the opposite openings in the front and side openings with the detector to transmit / receive the detection wave. The inner cover can be hidden to the maximum by closing the openings not facing each other with the shutter.

In the preferred embodiment, the inner cover is colored black and the outer cover is colored white. In this manner, by making the inner cover black, disturbance light such as solar light other than the infrared detection wave transmitted and received between the light receiving element and the light transmitting element is prevented from entering the inside through the inner cover. Therefore, malfunctions influenced by disturbance light can be prevented. In addition, since the wall surface of a building is often painted white, the exterior cover is made white so that the emitter / receiver harmonizes with the color of the building, so that the appearance of the building is good, and illegal intruders are notified. Becomes difficult.

Moreover, in a preferred embodiment, the outer cover has a symmetrical shape with respect to the central portion in the longitudinal direction. In this way, one of the transmissive and light-receiving receivers facing each other inverts the outer cover, so that it can be commonly used in the other.
Embodiment of the Invention

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EMBODIMENT OF THE INVENTION Hereinafter, embodiment of the intrusion detection sensor which concerns on this invention is described based on drawing. 1 shows an example of a method of using the intrusion detection sensor of the first embodiment. The intrusion detection sensor includes a light projector 1 incorporating a light transmitting element 10 for transmitting infrared detection waves A such as near infrared rays and visible light, and a light receiving element for receiving the detection waves A emitted therefrom. A light receiver 2 having a built-in 20 is provided. These light-transmitters 1 and light-receivers 2 have their longitudinal directions coincident with each other in the vertical direction, and are separated by a predetermined distance, and the side surfaces are opposed to each other and mounted on a wall surface of a building, and the like. When the detection wave A projected toward 20 is cut off or attenuated by the illegal intruder B, the lamp is turned on or flashes based on an electrical signal output from the light receiver 2 side, or the alarm unit Either me or a siren will sound and an alarm will be given to the security company. The said light-receiving devices 1 and 2 may be arrange | positioned so that front may oppose each other so that it may mention later.

2 is a front view of the light receivers 1 and 2, and FIG. 3 is a right side view thereof. In addition, these light-receiving devices 1 and 2 differ in whether a light-transmitting element or a light-receiving element is formed inside, and since the other structure is substantially the same, it demonstrates using common drawing.

The light-receiving devices 1 and 2 include an inner cover 3 that covers each component such as a light-receiving element and an outer cover 4 that covers the inner cover 3. The inner cover 3 is closed at the top and bottom, the cross section is substantially semi-circular, and the rear side thereof is opened (FIG. 5). In addition, the inner cover 3 transmits the infrared detection wave A irradiated from the light transmitting element as a whole, and blocks external light such as sunlight in other wavelength ranges, for example, black or the like. It is colored with the color of black system, such as dark gray or dark brown. As the inner cover 3, one made of resin such as acryl is used, and one made of PC which is particularly preferable in mechanical strength and weather resistance is used.

The outer cover 4 has a long circular shape that is vertically symmetrical with respect to the middle part of the vertical direction in the longitudinal direction as viewed from the front in order to be common to all of the light-receiving devices 1 and 2. Formed. In addition, similarly to the case of the inner cover 3, the top and bottom are closed, the cross section is substantially semi-circular, and the rear side thereof is opened (Fig. 5). Moreover, the side opening part 41 which passes the detection wave A which permeate | transmits and receives between the light-receiving receivers 1 and 2 is formed in the right part as seen from the front of the said outer cover 4. As shown in FIG. In addition, since the wall surface of the building is often painted white, the light-receiving devices 1 and 2 are harmonized with the color of the building to improve the appearance of the building, and the illegal intruder B notices it. For the sake of difficulty, the outer cover 4 is colored white in series with the wall of the building. As this outer cover 4, resin thing, such as ABS and AES, is used.

As described above, by forming the outer cover 4 on the outer circumferential surface of the inner cover 3, most of the inner cover 3 excluding the side opening 41 is covered and covered, and the outside of the inner cover 3 is covered. The exposed part of the furnace becomes smaller and harder to see. In other words, when the transmitters / receivers 1 and 2 are mounted on the wall surface of a building or the like so as to face each other as shown in Fig. 1, the inner cover 3 is largely obscured by the outer cover 4 when viewed from the front. Therefore, even if the inner cover 3 is colored in a black system to prevent disturbance light, and the wall surface of the building is painted in a white system, the outer cover 4 is colored in a color that matches the color of the building. By painting or painting, the appearance of the building becomes good, and the illegal intruder (B) becomes difficult to notice. In addition, by covering the inner cover 3 using the outer cover 4, there is no need to apply a partly troublesome coating to the cover as in the prior art.

4 is a side cross-sectional view taken along line IV-IV of FIG. 2, and FIG. 5 is a horizontal cross-sectional view taken along line V-V of FIG. 4. The base member 5 is formed inside the transceivers 1 and 2 shown in FIG. 4, and it supports the 1st board | substrate 6 with which the terminal 61 of an external connection line, etc. were attached. In addition, the upper and lower portions of the base member 5 are provided with two support pieces 51 integrally protruding in parallel, and the upper and lower parts are closed through the rotation shafts 52 extending in the vertical direction between the support pieces 51. The substantially cylindrical casing 7 (FIG. 5) is supported so that rotation angle is adjustable. As this case 7, resin thing, such as acrylic and polycarbonate which permeate | transmits the said detection wave (A), is used.

Inside the case 7, a second substrate 8 provided with two upper and lower light transmitting elements 10 or light receiving elements 20, an electric circuit, and the like are disposed. As the light transmitting element 10, for example, an infrared LED or the like that irradiates beam-shaped infrared rays is used. As the light receiving element 20, for example, a photo transistor or a photodiode that receives infrared rays is used. When the detection wave A irradiated from the two light emitting elements 10 is received by the two light receiving elements 20, the received amount thereof is electrically compared with the level amount set by the level setter, and the illegal infiltrator B is When the detection wave A is blocked or partially blocked, an alarm is issued from the light receiver 2 side when the received light amount is attenuated to zero or a predetermined amount or less.

On the opposing portion of the case 7 with the light-receiving elements 10 and 20, two upper and lower lens portions 71 such as a Fresnel lens or a convex lens for collecting and exiting the detection wave A are formed. These lens portions 71 are opposed to the side opening portions 41 of the outer cover 4. As the means for condensing the detection wave A, another optical system, for example, a reflection mirror, may be used instead of the lens.

In FIG. 4, in order to make a structure easy to understand, although the transmissive-light-receiving elements 10 and 20 are shown facing the front side (left direction of FIG. 4), the transverse-receiving receivers 1 and 2 oppose each other. In this embodiment, as shown in FIG. 5, the transmission / receiving elements 10 and 20 actually perform the side opening 41, and the detection wave A is passed through the side opening 41. ) Or emit light.

On the outer circumferential surface of the base member 5, a mounting groove 53 for mounting the opening side of the inner cover 3 is formed, and the inner cover 3 is fitted therein through a waterproof packing 54 such as rubber. I put it and attach it. Moreover, the upper part of the said base member 5 protrudes and installs the latch click 55 extended upward for hooking the upper side of the outer cover 4, and the lower side of the outer cover 4 below. The thread part 56 by the insert nut etc. for fixing is formed. On the other hand, near the opening side in the upper inner surface of the outer cover 4, a first engagement groove 42 engaging with the engaging click 55 is formed, and the screw portion at the lower opening side of the outer cover 4 is formed. A first through hole 43 facing the 56 is formed. When the outer cover 4 is attached, the outer cover 4 is rotated downwardly about the locking click 55 while the first engagement groove 42 is locked to the locking click 55. While making the first through hole 43 face the threaded portion 56 and twisting the set screw 57 from the through hole 43 to the threaded portion 56, the base cover 4 is attached to the base member. Fix to (5).

On the lower side of the outer cover 4, a second engaging groove 44 is formed in a shape opposite to the first engaging groove 42, and on the upper side of the outer cover 4, a first through hole 43. At the same position as that, a thin knockout portion 45 for forming the second through hole 43A is provided. In this way, the outer cover 4 can be commonly used for both the light-receiving devices 1 and 2.

In other words, the light-receiving devices 1 and 2 are provided such that the side openings 41 of the respective outer covers 4 face each other, as shown in Fig. 1, so that the angles of the light-receiving devices 1 and 2 are different. The outer cover 4 needs to be in the left and right opposite directions. At this time, for example, the outer cover 4 is mounted on the side of the transmitter 1 in the posture as shown in FIG. 4, and on the side of the receiver 2 facing the projector 1, the outer cover 4 is mounted. ) In the upside down position. The second locking groove 44 inverted to the upper side is hooked to the locking click 55 of the base member 5, and the knockout portion 45 inverted to the lower side is punched out by the addition of an external force to form the second through hole ( 43A is formed, and a fixing screw 57 is inserted into the threaded portion 56 of the base member 5 from the third through hole 43A to fix the outer cover 4.

In this way, the same outer cover 4 is attached to both of the light receiving and receiving receivers 1 and 2 such that the side openings 41 face each other. By the side opening 41, the passage portion of the detection wave A in the inner cover 3, in other words, as shown in FIG. 5, the light-transmitting element 10 or the light receiving element of the inner cover 3 is included. The part 30 through which the detection wave A transmitted and received between the element 10 and the light-receiving element 20 or the light-transmitting element 10 of the counterpart located next to this is exposed.

Moreover, in this embodiment, the mounting plate 11 is fixed to the back side of the said base member 5 by the some fixing screw 12, and the said light-receiving apparatus 1 is fixed through this mounting plate 11. In addition, in FIG. , 2) is mounted on the wall of the building with fixing screws (not shown).

In addition, in the circular front part of the outer cover 4 shown in FIG. 2, the knockout part 9 which can be punched by the addition of an external force is formed, and the outer cover 4 is punched out by punching out this knockout part 9. ), The front opening 46 can be formed to be continuous to the side opening 41. As shown in Fig. 5, the knockout portion 9 is formed by a thin portion 91 which is recessed from the outer surface of the outer cover 4 and extends continuously from the side opening 41 to the front portion. It is. From the said thin part 91 to the outer surface of the outer cover 4, the taper surface 92 is formed so that the angle part which appears on this outer surface may be acute, and the external appearance after punching this thin part 91 will be favorable. It is meant to be built. In addition, as shown in Figs. 2 and 3, a plurality of grooves are extended in the horizontal direction, that is, in the direction orthogonal to the longitudinal direction of the cover 4, above and below the side opening 41 in the outer cover 4. 41 A of side opening parts are formed, and these also form the knockout part 9 used as the thin part recessed from the outer surface of a cover.

In 2nd Embodiment shown in FIG. 6, the said thin part 91 is formed in the outer surface side of the outer cover 4, and this thin part 91 is used as the knockout part 9. As shown in FIG. In this way, the knockout part 9 becomes invisible from the outside.

In the third embodiment shown in FIG. 7, the front opening 46 continuous to the side opening 41 is formed in advance on the front portion of the outer cover 4, and elastic deformation is performed on the inner surface side of the front opening 46. The shutter 47 which consists of resin plates which are possible is arrange | positioned. Further, on the inner surface side of the outer cover 4, a guide 48 is formed along the front opening 46 to extend continuously to guide both sides of the shutter 47, and along the guide 48 the shutter ( The front opening 46 can be selectively opened and closed by moving 47) while elastically deforming with a finger. At both ends of the guide 48, stoppers 71 and 72 are formed to contact one end and the other end of the shutter 47 to position the shutter 47 at an open position and a closed position shown in the drawing. have.

In the fourth embodiment shown in FIG. 8, similarly to the case of the third embodiment, the front opening 46 continuous to the side opening 41 is formed in advance on the front portion of the outer cover 4. Unlike the third embodiment, the shutter 47 made of an elastically deformable resin sheet that is moved from the inner surface side of the side opening 41 to the inner surface side of the front opening 46 is disposed. Further, on the inner surface side of the outer cover 4, a guide 48 extending in a continuous shape along the side opening portion 41 and the front opening portion 46 is formed, and the shutter 47 is placed along the guide 48. By moving elastically with a finger, the side opening part 41 and the front opening part 46 can be opened and closed selectively. At both ends of the guide 48, the first and second openings of the side surface portion 41 of the shutter 47 are opened in contact with the respective ends of one end and the other end of the shutter 47, and the front opening 46 ), Stoppers 71 and 72 are positioned to position the second position to open.

As mentioned above, by forming the knockout part 9 or forming the front opening part 46 in advance and forming the shutter 47, the freedom when installing an intrusion detection sensor becomes high, and it becomes rich in versatility. In other words, when the intrusion detection sensor is used outdoors or around the security object, the projection angles and the reception angles of the transmitters and receivers 1 and 2 are changed, so that the front of the receivers and receivers 1 and 2 are changed. In the case where the first and second embodiments shown in Figs. 5 and 6 are installed when facing each other, the knockout portion 9 is punched to form the front opening 46 so that the inner cover 3 can be formed. The passage portion 30A of the detection wave A is exposed, and at the same time, the case 7 is rotated about the rotation shaft 52 to direct the light transmitting and receiving elements 10 and 20 thereinto, In this state, the illegal invader B is detected. In the third embodiment of FIG. 7, the shutter 47 is moved along the guide 48 to the side opposite to the side opening 41 and the front opening 46 is opened. In this way, illegally invading particles in the arrangement in which the front and rear surfaces of the light-receiving devices 1 and 2 are opposed to each other by performing light-receiving by the light-receiving elements 10 and 20 through the front opening 46. Detection of (B) becomes possible.

As described above, according to the intrusion detecting sensor of the present invention, the transmitter / receiver can be harmonized with the color of the building with a simple configuration, and the appearance of the building can be improved, making it difficult to be noticed by the intruder.

Claims (6)

At least one of the front and side surfaces of a light emitter for irradiating infrared detection waves for intrusion detection and a light receiver for receiving the irradiated detection waves transmits the detection waves, thereby preventing extraneous light. Covered by an inner cover that blocks The inner cover is covered by an outer cover, An intrusion detection sensor, characterized in that a side opening is formed at a side portion of the outer cover to expose a passage portion of the detection wave in the inner cover. The front opening portion of claim 1, wherein a knockout portion that can be punched by an external force is formed on the front portion of the outer cover, and the front opening portion that exposes a passage portion of the detection wave in the inner cover is formed by punching the knockout portion. Intrusion detection sensor, characterized in that formed. 2. The front opening portion of claim 1, wherein a front opening portion is formed at a front portion of the outer cover to expose a passage portion of the detection wave in the inner cover. Intrusion detection sensor, characterized in that the shutter for opening and closing at least the front opening of the front opening and the side opening. The intrusion detecting sensor according to any one of claims 1 to 3, wherein the inner cover is colored in a black color, and the outer cover is colored in a white color. The intrusion detecting sensor according to any one of claims 1 to 3, wherein the outer cover has a symmetrical shape with respect to the central portion in the longitudinal direction. The intrusion detecting sensor according to claim 4, wherein the outer cover has a symmetrical shape with respect to the central portion in the longitudinal direction.

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