JP2007018437A - Light module for detecting intrusion - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a part and a method for detecting an intruder intruding in an interval for detecting intrusion. <P>SOLUTION: The light module for detecting intrusion comprises, at least a pair of standing supports integrally formed and placed with a certain space on the basic support 10, as shown in Fig. 3, and is installed at the site for detecting an intruder, by setting a light emission unit 2 on the one of standing support A11 and a light-receiving unit 3 on the other standing support B12 so that the light beam 1 is emitted and accepted by these units, and the light beam is blocked to sense the presence of the intruder as electrical signal blockage, if the intruder intrudes within the light beam of the light module for detecting intruders. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  This is an optical intrusion detection module that detects an intruder or an intruder by using light beam blocking.

  As shown in FIG. 1, conventionally, a light emitter (electro-optical converter) 2 is installed in an intrusion detection space, and a light beam 1 emitted from the light emitter to the intrusion detection space is received at a detection site. (Photoelectric converter) 3 receives light, converts it into an electrical signal, and detects light blocking by ON / OFF. When it is desired to extend the section, a relay amplifier may be used as shown in FIG. See Patent Document 1

  Conventionally, as shown in FIG. 2, an optical collimator lens 5 such as a laser diode (LD) or a light emitting diode (LED) is installed in front of the light emitter 2 to convert it into a parallel light beam, and a half mirror is provided in the optical path of the light beam. 7, the transmitted light is condensed on the surface of the compact disk 7 by the optical collimator lens 5, the reflected light is again guided to the half mirror, and the reflected light of the half mirror is condensed by the optical collimator. It has been put into practical use as a “compact disc pickup” that detects light with a light receiver and converts it into an electrical signal. See Non-Patent Document 1.

Japanese Patent Laid-Open No. 6-6310 "Optical Information Industry and Advanced Technology" Engineering Books 1997

As shown in FIG. 1, a conventionally known intrusion detection system has a light emitter 2 such as a laser installed at a detection site, and a light beam 1 emitted from the light emitter 2 into an intrusion detection space is received by a light receiver 3. The light was received and converted into an electric signal, and the presence or absence of interruption of the light beam 1 in the intrusion detection section was detected by the presence or absence of the electric signal. In such a system, it takes time for the "on-site alignment work" of the light emitter and the light receiver. In addition, these operations were greatly affected by external environment restrictions such as weather and traffic regulations, and the cost was also increased.
In addition, when the site is curved, the light beam goes straight, so it is necessary to individually install the light emitter 2 and the light receiver 3 along the bends. The alignment work increased and the cost increased.

  As shown in FIG. 3, at least one pair of rising support members that integrally form the rising from the basic support tool are provided at intervals, and the light emitter 2 is provided on one of the rising support tools A <b> 11. By installing the light intrusion detection module on the site, the light receiver 3 is installed on the other rising support tool B12, and each is arranged so as to transmit and receive the light beam 1. When an intruder enters the light beam of the detection module, the light beam is interrupted and the presence or absence of the intruder can be detected as an electrical signal interruption.

Advantages of the “light intrusion detection module” of the present invention (1) Conventionally, as shown in FIG. 1, it is necessary to install a light emitter and a light receiver at an intrusion detection site. The light intrusion module of the present invention can be assembled in a factory or the like away from the detection site.
(2) For the above reasons, there is no optical axis alignment work on site, and the influence of the external environment such as weather and road regulations is reduced.

As an effect of the “multi-beam / one-place type light intrusion detection module” of the present invention, (1) since the light emitter and the light receiver can be installed at the same place, the conventional method and the single beam light intrusion detection module of the above (0007) In comparison, installation on site is only required on one side, and only one power source is required, and installation restrictions and economic effects are significant.
(2) By using multiple beams, the detection accuracy is improved in proportion to the number of beams as compared with the conventional method and the single-beam light intrusion detection module of (0007).

As an effect of the multi-beam / opposed light intrusion detection module of the present invention,
(1) By using multiple beams, the detection accuracy is improved in proportion to the number of beams as compared with the conventional method and the single-beam light intrusion detection module of (0007).

  As shown in FIG. 3, at least one pair of start-up supports that form a stand-up integrally with the main support 10 is provided at an interval, and the light emitter 2 is provided on one start-up support A. The light intrusion detection module is characterized in that the light receiver 3 is installed on the other raising support B and is arranged so as to transmit and receive the light beam 1. The light emitter can be either an LD (laser diode) or an LED (light emitting diode), and a lens such as a collimator lens may be installed in front of the light emitter / receiver. Depending on the installation environment, additional equipment such as waterproof, drip-proof and dust-proof is provided.

  As shown in FIG. 4, at least one pair of rising supports that integrally form the rising from the main support 10 is provided at an interval, and the light emitter 2 is provided on one of the rising supports A <b> 11. And the light receiver 3 are spaced apart from each other, the reflecting mirror 14 is disposed on the other rising support B, the light beam 1 from the light emitter 2 is reflected by the reflecting mirror 14, and the light beam is again received by the light receiver 3. 1 is a light intrusion detection module 16 which is installed so as to receive 1.

  As shown in FIG. 5, at least one pair of rising support members that integrally form a rising from the main support 10 is provided at an interval, and the light emitter 2 is provided on one of the rising supports A11. And the reflecting mirror 14 are installed at intervals, the light receiving device 3 and the reflecting mirror 14 are installed at an interval on the other rising support B12, and the light beam (A → B) from the light emitter 2 is The reflected light beam (B → A) is reflected by the reflecting mirror 14 of the rising support tool B11, and the reflected light beam is reflected by the reflecting mirror 14 of the rising support tool A and becomes a reflected light beam (A → B). The light beam 1 is repeatedly reflected between the reflecting mirrors of the rising support tools A11 and B12 so as to go to the reflecting mirror 14 of the rising support tool B12, and finally received by the light receiver 3. Two-beam receiver characterized by being installed An optical unit one point optical intrusion detection module.

  As shown in FIG. 6, at least one pair of rising supports that integrally form a rising from the main support 10 is provided at an interval, and the reflecting mirror 14 is provided on one of the rising supports B12. However, the light emitting device 2, the light receiving device 3, and the reflecting mirror 14 are installed on the other raising support A with a space between them, and the light beam (A → B) from the light emitting device is The light beam (B → A) is reflected by the reflecting mirror 14 of the raising support B12, and the light beam is reflected by the reflecting mirror 14 of the raising support A11 to become a light beam (A → B). As it goes to the reflecting mirror 14 of B12, the light beam is 1, and it is installed so that it is repeatedly reflected between the rising supports A and B, and finally received by the light receiver. Multi-beam / light emitting / receiving type light intrusion detection module A.

  An application example to an automobile will be described using the light intrusion detection module 16 shown in the paragraph 0010 and FIG. As shown in FIG. 7, when the automobiles collide with each other, the light beam 1 of the light intrusion detection module 16 installed at the front portion of the automobile 20 is blocked by the partner automobile, and the light receiver 3 of the light intrusion detection module. The collision detection controller 17 in the vehicle is activated by the electrical signal (collision detection signal) from the vehicle, and the airbag actuation device 18 is activated by the electrical signal 22 for airbag operation from the collision detection controller 17, or the The brake actuation device 19 is actuated by a brake actuation signal 23 from the collision detection controller 17.

  FIG. 8 shows an embodiment. The light intrusion module 16 having a length (L) of 0.5 m and a rising height (H) of 0.1 m is installed, and the 1.3 μm light emitter 2 and the light receiver 3 are attached to the supports A and B. In each case, the intruder 13 having a height and width of 0.2 m was placed on the light intrusion detection module for verification. As a result, the difference in light output level between when the intruder was placed and when it was removed was measured, and the measurement limit was 50 db or more. From this figure, it was confirmed that the system operates normally.

  The light intrusion detection module of the present invention is used to detect intrusion into the train track of the transportation industry, safety devices such as revolving doors and automatic opening / closing shutters of the construction industry, and automobile fenders shown in FIG. 7 and (0014). There is a possibility of use in various fields such as safety devices by wearing.

It is explanatory drawing of the conventional light intrusion detection system. It is an explanatory view of the principle of a known compact disk optical pickup. It is sectional drawing which shows the structure of this invention light intrusion detection module. It is sectional drawing which shows the structure of the 2 beam 1 location type | mold optical intrusion detection module of this invention. It is sectional drawing which shows the multi-beam and light-emitting / receiving device opposing type light intrusion detection module structure of this invention. It is sectional drawing which shows the multi-beam and light-receiving / emitting device one place type | mold optical intrusion detection module structure of this invention. It is explanatory drawing which applies the light intrusion detection module of this invention to a vehicle collision detection method. It is an Example for verifying operation | movement of a light penetration detection system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light beam 2 Light emitter 3 Light receiver 4 Relay amplifier 5 Lens 6 Sheath 7 Half mirror 8 Compact disk 9 Electric wire 10 Core support 11 Launching support A
12 Startup support B
DESCRIPTION OF SYMBOLS 13 Intruder or intruder 14 Reflector 15 Power source for light emitter and light receiver 16 Light intrusion detection module 17 Collision detection device 18 Airbag operation device 19 Brake operation device 20 Car 21 Collision detection signal 22 Airbag operation signal 23 For brake operation signal

Claims (4)

  At least one pair of rising supports that form a rising integrally with the main support is provided at an interval, a light emitter is provided on one of the rising supports A, and the other rising support B is provided. The light intrusion detection module is characterized in that a light receiver is installed in the light source, and the light beam from the light emitter is received by the light receiver.   At least one pair of start-up supports that form a stand-up from the main support is provided at a distance, and a light emitter and a light receiver are installed on one start-up support A at a distance. And the other raising support B is provided with a reflecting mirror, the light beam from the light emitter is reflected by the reflecting mirror, and the light beam is again received by the light receiver. Intrusion detection module.   At least one pair of rising supports that form a rising integrally with the main support is provided at an interval, and one of the rising supports A includes a light emitter and one or more reflectors. A light receiving device and one or more reflecting mirrors are installed at an interval on the other raising support B, and the light beam (A → B) from the light emitter is raised on the raising support B. The reflected light beam (B → A) is reflected by the reflecting mirror, and the reflected light beam (A → B) is reflected by the reflecting mirror of the rising support A to be reflected by the rising support B. The light beam is installed such that the light beam is repeatedly reflected between the reflecting mirrors of the raising supports A and B, and finally received by the light receiver, as it goes to the mirror. Intrusion detection module.   At least one pair of rising supports that form a rising integrally with the main support is provided at an interval, and one or more reflectors are provided on one rising support B on the other. A light emitting device, a light receiving device, and one or more reflecting mirrors are installed on the raising support A at a distance, and the light beam (A → B) from the light emitting device is reflected by the reflecting mirror of the raising support B. The light beam (B → A) is reflected by the reflecting mirror of the rising support A, becomes a light beam (A → B), and goes to the reflecting mirror of the rising support B. The light intrusion detection module is characterized in that it is installed so that reflection is alternately repeated between the rising supports A and B, and finally received by the light receiver.

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