KR20210051720A - Infrared detecting system with laser beam for calibration of infrared sensor - Google Patents

Abstract

The present invention relates to an infrared detection system including a light transmission unit which emits infrared rays and a light reception unit which is installed to face the light transmission unit, and receives infrared rays from the light transmission unit. The light transmission unit and the light reception unit each comprise: a base part provided with a plurality of through-holes and fixed to a wall surface or pole of a building; and a main body coupled to the base part to be able to rotate in left and right directions and including a pair of lenses for emitting or receiving infrared rays. The light transmission unit further includes a laser emission unit which is installed on the main body and emits a laser beam for adjustment of optical axes of the light transmission unit and the light reception unit, separately from the infrared rays emitted from the light transmission unit. The present invention is provided with an additional laser emission unit from which a laser beam is emitted to adjust optical axes of the light transmission unit and the light reception unit of the infrared detection system, and thus, the optical axes of the light transmission unit and the light reception unit can be easily adjusted when the infrared detection system is being installed or repaired and maintained, and accordingly, an operation time can be shortened.

Description

Infrared detection system with laser beam for calibration of infrared sensors {INFRARED DETECTING SYSTEM WITH LASER BEAM FOR CALIBRATION OF INFRARED SENSOR}

The present invention relates to an infrared detection system consisting of a light transmitting unit and a light receiving unit, and more particularly, an infrared sensor in which the optical axis of the infrared sensor can be easily adjusted during installation or maintenance work of an infrared detection system using a laser beam. It relates to an infrared detection system equipped with a laser beam for calibration.

In general, infrared detectors are installed in protected areas such as houses, general buildings, and office factories for the purpose of preventing theft and access control, and they are not stolen by external intruders by warning them in advance when bringing in or taking out unexpected people or items. Or, it is a device that can prevent various accidents in advance.

These infrared detectors consist of a pair of emitters that irradiate infrared rays and a receiver that receives infrared rays from the emitter, and arrange the emitter and the receiver so that they face each other at a certain distance, and when the light between the emitter and the receiver is blocked, an alarm Will occur.

Conventionally, when installing or maintaining an infrared detector, an operator approaches the front door of a management office or the upper part of the fence using a ladder, etc., and then the shape of the opposite sensor (receiver) through the transmission hole of the transmitter is changed into a mirror reflector (view finder). Adjust the emitter in the vertical direction or left and right direction so that it is located in the center of ).

However, controlling the detector on the other side to be accurately positioned at the center of the mirror reflector through the transmission hole of the transmitter installed on one side is uncertain, and it may take a considerable amount of time depending on the skill of the operator.

In addition, the distance between the transmitter and the receiver of the infrared detector may be 30m or more, in some cases, 100m or more. Since it is not easy, there is a difficulty in the installation work of the transmitter and receiver.

In addition, since infrared rays are not visible to the naked eye, a separate measuring tool was needed to measure the voltage intensity of infrared signals in order to check the optical axis alignment of infrared rays during the installation work of the infrared detector.

Conventionally, after operating the emitter so that infrared rays are irradiated from the emitter, it moves to a receiver installed at a certain distance from the emitter, measures the voltage intensity of the infrared signal received by the receiver, and measures the voltage intensity of the infrared signal received by the receiver. Adjust the optical axis of the emitter and receiver so that is received.

At this time, in order to measure the voltage intensity of the infrared signal received by the receiver, it is necessary to connect a tester (voltmeter) to the monitor jack terminal of the receiver and monitor the measured voltage. When adjusting the optical axis of the transmitter and receiver, a considerable amount of hassle was accompanied.

In other words, the conventional method of installing an infrared detector using a mirror reflector relies on the naked eye of the operator, and its accuracy is uncertain, and a separate measuring tool is required to check the alignment of the optical axis of the infrared detector, which is quite cumbersome as well as the operator's skill level. It takes a lot of time and is inefficient.

Republic of Korea Patent Publication No. 10-0556226

The present invention provides a separate laser irradiation unit to which a laser beam is irradiated to adjust the optical axis of the transmitting unit and the receiving unit of the infrared detection system, so that the optical axis of the transmitting unit and the receiving unit is adjusted during installation or maintenance work of the infrared detection system. It is an object of the present invention to provide an infrared detection system equipped with a laser beam for calibrating an infrared sensor, which can shorten the working time due to this ease.

According to an aspect of the present invention, an infrared detection system comprising a light transmitting part for irradiating infrared rays and a light receiving part installed opposite to the light transmitting part to receive infrared rays from the light transmitting part, wherein each of the light transmitting part and the light receiving part has a plurality of through holes. The base portion is formed to be fixed to the wall or pole of the building; And a body which is coupled to the base so as to be rotated in the left and right directions, and is provided with a pair of lenses for irradiating or receiving infrared rays, and the light transmitting part is installed on the main body, but separately from the infrared rays irradiated from the light transmitting part. An infrared detection system equipped with a laser beam for calibrating an infrared sensor may be provided, further comprising a laser irradiation unit for irradiating a laser beam for adjusting an optical axis of the light transmitting unit and the light receiving unit.

The laser irradiation unit laser pointer module; A power supply unit connected to the main body to supply power to the laser pointer module; And a laser driving switch for selectively supplying power to the laser pointer module from the power supply unit.

In addition, the main body includes a lens holder to which the pair of lenses is fixed; And a lens bracket having the lens holder inserted therein and provided to adjust the lens holder in an up-down direction.

In addition, the lens holder is provided with a module mounting groove for mounting the laser pointer module between the pair of lenses, the laser irradiation unit has a shape corresponding to the module mounting groove, the laser pointer module in the module mounting groove It may further include a guide portion for guiding the combination of.

In addition, the light receiving unit may further include a point display unit provided at a position corresponding to a position where the laser pointer module of the light transmitting unit is installed so that the laser beam irradiated from the laser irradiation unit is irradiated to an accurate target point.

In addition, the light-receiving unit LED display unit for displaying the optical axis adjustment state of the light-transmitting unit and the light-receiving unit; And an alarm sound generator for generating different alarm sounds according to the voltage intensity of the infrared signal received by the light receiving unit.

According to another aspect of the present invention, there is provided a method for adjusting an optical axis of an infrared detection system comprising a light transmitting unit for irradiating infrared rays and a light receiving unit installed opposite to the light transmitting unit to receive infrared rays from the light transmitting unit, wherein the transmissive unit is separate from infrared rays. In a state in which a laser is irradiated from, the positions of the light transmitting part and the light receiving part are adjusted so that the laser is irradiated to the light receiving part, and the infrared ray is irradiated from the light transmitting part, the voltage intensity of the infrared signal received by the light receiving part is applied. An optical axis adjustment method of an infrared detection system for finely adjusting the optical axis of the light transmitting unit and the light receiving unit while checking the optical axis alignment state of the light transmitting unit and the light receiving unit through an alarm sound generated accordingly and an LED displayed on the light receiving unit may be provided. have.

The present invention provides a separate laser irradiation unit to which a laser beam is irradiated to adjust the optical axis of the transmitting unit and the receiving unit of the infrared detection system, so that the optical axis of the transmitting unit and the receiving unit can be easily adjusted during installation or maintenance work of the infrared detection system. Time can be shortened.

In addition, the present invention is provided with an LED display for displaying the optical axis alignment state of the light transmitting unit and the light receiving unit by LED, it is possible to easily check the optical axis alignment state of the infrared detection system without a separate voltage measurement tool such as a tester.

In addition, the present invention includes an alarm sound generator that generates a different alarm sound according to the voltage intensity of the infrared signal received by the light receiving unit, so that the operator can check the intensity of the infrared signal received by the light receiving unit through the alarm sound. , Fine adjustment of the optical axis of the light transmitting part and the light receiving part may be possible.

1 is a view showing a light transmitting part of an infrared detection system according to an embodiment of the present invention.
FIG. 2 is a view showing a main part of the light transmitting part shown in FIG. 1 by separating.
FIG. 3 is a view showing a front view, a side surface, and a front view of the light transmitting unit shown in FIG. 1 in a state in which the cover is mounted.
FIG. 4 is a view for explaining the configuration and coupling of the body of the light transmitting unit shown in FIG. 1.
FIG. 5 is a diagram for explaining an arrangement relationship between a main part of a light transmitting part and a cover illustrated in FIG. 1.
6 is a block diagram schematically showing a configuration of a light receiving unit of an infrared detection system according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible, even if they are indicated on different drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, a preferred embodiment of the present invention will be described below, but the technical idea of the present invention is not limited or limited thereto, and may be modified and variously implemented by a person skilled in the art.

1 is a view showing a light transmitting part of an infrared detection system according to an embodiment of the present invention, FIG. 2 is a view showing a main part of the light transmitting part shown in FIG. 1 by separating, and FIG. 3 is a light transmitting part shown in FIG. It is a view showing the front view, the side of the unit, and the front view of the cover in a state, respectively.

In addition, FIG. 4 is a view for explaining the configuration and coupling of the main body of the light transmitting part shown in FIG. 1, and FIG. 5 is a view for explaining an arrangement relationship between the main part of the light transmitting part shown in FIG. 1 and the cover, and FIG. 6 is It is a block diagram schematically showing the configuration of a light receiving unit of an infrared detection system according to an embodiment of the present invention.

1 to 6, the infrared detection system according to an embodiment of the present invention is installed to face the light transmitting unit 100 for irradiating infrared light, the light transmitting unit 100, and transmits infrared rays from the light transmitting unit 100. It consists of a light receiving unit 200 to receive.

The light transmitting part 100 is composed of a base part 110 and a body (not shown), and the body may include a lens holder 130 and a lens bracket 140.

The base unit 110 may be coupled to a body to be described later and fixedly installed on a wall surface of a building, a terminal box, or a pole. As an example, a plurality of through-holes 111 may be formed in the base unit 110 to be bolted to a wall or pole of a building.

The body is provided with an infrared sensor therein to irradiate or receive infrared rays, and a lens holder 130 to which a pair of lenses 121 is fixed, and a lens bracket 140 coupled to surround the outside of the lens holder 130 It may include.

The light transmitting unit 100 having the above configuration may facilitate the operator to adjust the position of the lens holder 130 during the installation work of the infrared detection system.

Specifically, the lens holder 130 is inserted into the interior of the lens bracket 140, provided to be rotated in the vertical direction around the first rotation axis 133, the lens holder 130 and the lens bracket 140 In this coupled state, the main body is coupled to the base unit 110, but the main body may be provided to be rotated in the left and right directions around the second rotation shaft 141.

Accordingly, in the infrared detection system according to an embodiment of the present invention, the operator may easily adjust the position of the lens holder 130 in the vertical and horizontal directions.

In one embodiment, the main body is provided to be rotated about 90 degrees in the left and right directions with respect to the first rotation shaft 112 of the base unit 110, and the lens holder 130 is centered on the first rotation shaft 133 It may be provided to be able to rotate about 10 degrees each in the vertical direction.

In the infrared detection system according to an embodiment of the present invention, in order to adjust the optical axes of the light transmitting unit 100 and the light receiving unit 200, a laser beam is irradiated separately from the infrared rays irradiated from the light transmitting unit 100. A laser irradiation unit 150 may be further provided.

The laser irradiation unit 150 may be provided on any one of the light transmitting unit 100 and the light receiving unit 200, but may be preferably provided on the light transmitting unit 100 for the convenience of a worker.

The laser irradiation unit 150 includes a laser pointer module 151 to which a laser beam is irradiated, and a power supply unit 153 connected to the main body to supply power to the laser pointer module 151.

The laser pointer module 151 may be provided to irradiate a laser beam of visible light so that it can be easily checked with the naked eye, and preferably, an industrial laser pointer capable of irradiating the laser beam to a distance of 100 m or more may be used. .

At this time, the laser pointer module 151 is installed so that the direction of the laser beam irradiated from the laser pointer module 151 is parallel to the direction of the infrared ray irradiated from the infrared sensor of the light transmitting unit 100, It is provided so that the direction can be visually confirmed through the laser beam, and the optical axis alignment of the infrared sensor of the light transmitting unit 100 and the light receiving unit 200 can be easily performed.

That is, it may be preferable that the laser pointer module 151 be provided on one side of the lens holder 130 in which the infrared sensor is provided so that the laser beam can be irradiated in the same direction as the direction of the infrared radiation irradiated from the light transmitting unit 100. have.

In this embodiment, a module mounting groove 135 for mounting the laser pointer module 151 between the pair of lenses 131 is provided in the lens holder 130 of the light transmitting unit 100, and the laser irradiation unit 150 ) May further include a guide part 157 that has a shape corresponding to the module mounting groove 135 and guides the coupling of the laser pointer module 151.

The guide part 157 may be fixed to the module mounting groove 135 while the laser pointer module 151 is inserted into the inner circumferential surface. As an example, the guide part 157 may be forcibly fitted into the module mounting groove 135 to stably support the laser pointer module 151.

In this case, the laser irradiation unit 150 may be provided with a separate laser driving switch 155 to selectively supply power to the laser pointer module 151 from the power supply unit 153.

Referring to FIG. 3, it is shown that the laser driving switch 155 is installed on one side of the base unit 110, but the position of the laser driving switch 155 is not particularly limited, and the position of the laser driving switch 155 is not particularly limited. It may be desirable that the movement of the main body is not limited and is installed so that the operator can easily press it.

The light transmitting part 100 may further include a cover 170 covering the front surface of the main body. The cover 170 may be provided to protect the body in which the infrared sensor is installed from the external environment and to improve the aesthetics. In this case, the cover 170 may be preferably made of a material through which the light of the infrared sensor can pass.

The light-receiving part 200 may be provided in the same manner as a part of the light-transmitting part 100 described above. That is, the light-receiving unit 200, like the light-transmitting unit 100, is composed of a base unit and a main body, and the main body may include a lens holder and a lens bracket, and may further include a cover covering the front surface of the main body. .

In describing the light-receiving unit 200, a detailed description of the same configuration as the light-transmitting unit 100 will be omitted.

At one side of the light-receiving unit 200, preferably at the same position as the position where the laser pointer module 151 of the light-transmitting unit 100 is installed, a point display unit 210 for confirming whether or not the laser beam is irradiated to the correct target point is provided. It can be provided.

A scale, etc., may be displayed on the point display unit 210 to easily identify the position to which the laser beam is to be irradiated or the shape (degree of ellipse) of the laser beam according to the angle at which the laser beam is irradiated in order to adjust the optical axis more accurately. have.

When the infrared sensors of the light transmitting unit 100 and the light receiving unit 200 are aligned with the optical axis, the shape of the ray point beam irradiated to the point display unit 210 may be circular. Conversely, even if the laser beam is accurately irradiated to the point display unit 210, when the optical axis of the infrared sensor is shifted, the shape of the laser beam irradiated to the point display unit may have an elliptical shape.

In this embodiment, the operator can easily check the optical axis alignment state of the light transmitting unit 100 and the light receiving unit 200 by observing the shape of the laser beam irradiated to the point display unit.

In addition, the light-receiving unit 200 may further include a separate sensing means for detecting whether the light-transmitting unit 100 and the light-receiving unit 200 are aligned with each other by detecting the angle of the laser beam or the shape of the laser beam irradiated to the point display unit. I can.

The light-receiving unit 200 is an alarm sound that generates a different alarm sound according to the voltage intensity of the infrared signal received by the LED display unit 220 and the light-receiving unit 200 indicating the optical axis adjustment state of the light-transmitting unit 100 and the light-receiving unit 200 It may further include a generator 230.

The LED display unit 220 is for enabling the operator to easily identify the optical axis alignment state of the light transmitting unit 100 and the light receiving unit 200, and the voltage intensity of the infrared signal received by the light receiving unit 200 is a reference voltage (for example, , 3V) or more, the LED is turned on, and it can be seen that the optical axes of the light transmitting unit 100 and the light receiving unit 200 are aligned.

Meanwhile, the LED display unit 220 may be provided to be displayed in different colors (eg, red and green) according to the voltage intensity of the infrared signal received by the light receiving unit 200.

The alarm sound generator 230 enables the operator to hear the sound and check the voltage intensity of the infrared signal. In the present embodiment, the alarm sound generator 230 generates an alarm sound (for example, a “beep” sound) intermittently with a certain period when the optical axis of the light transmitting unit 100 and the light receiving unit 200 is shifted. can do.

In addition, the alarm sound generator 230 makes the alarm sound generation period shorter as the voltage intensity of the infrared signal increases, and when the voltage intensity of the infrared signal received from the light receiving unit 200 is higher than the reference voltage, a “beep” sound is generated. By continuously transmitting, the operator can recognize that the optical axes of the light transmitting unit 100 and the light receiving unit 200 are aligned.

At this time, the alarm sound generation cycle according to the voltage intensity of the infrared signal is classified into 5 levels as shown in [Table 1] below, and the alarm sound generation period is changed for each step. Through this, you can check the alignment of the optical axis of the infrared sensor.

Voltage strength (V) 3.0~2.6V 2.5~2.0V 1.9~1.3V 1.2~0.6V 0.5V or less Alarm tone cycle continue 0.3 seconds 1 second Alignment state Excelllent Good Fair Realign Poor

In one embodiment, the alarm sound generator 230 may be provided to be operated by a separate operation switch, and the operation switch may be a DIP switch.

Hereinafter, a method of adjusting the optical axis of the infrared detection system using the infrared detection system having the above-described configuration will be briefly described.

First, a laser beam is irradiated through the laser irradiation unit 150 provided in the light transmitting unit 100. At this time, a laser driving switch 155 is provided on one side of the light transmitting unit 100, and the operator can control the laser pointer module 151 to be driven separately from the operation of the infrared sensor through the laser driving switch 155. .

Then, the position of the light-transmitting part 100 is adjusted while rotating the lens holder 130 of the light-transmitting part 100 in the vertical and horizontal directions so that the laser beam is irradiated to the point display part 210 of the light-receiving part 200.

When the infrared sensors of the light transmitting unit 100 and the light receiving unit 200 are aligned with the optical axis, the shape of the ray point beam irradiated to the point display unit 210 may be circular. Conversely, even if the laser beam is accurately irradiated to the point display unit 210, when the optical axis of the infrared sensor is shifted, the shape of the laser beam irradiated to the point display unit 210 may have an ellipse shape.

In a state in which the laser beam is irradiated to the point display unit 210 of the light receiving unit 200, the shape of the laser beam irradiated to the point display unit 210 is observed to facilitate the optical axis alignment of the light transmitting unit 100 and the light receiving unit 200 I can confirm it.

Then, the infrared sensor of the light transmitting unit 100 is operated so that infrared rays are irradiated from the light transmitting unit 100.

In this case, the operator can easily check the optical axis alignment state of the light transmitting unit 100 and the light receiving unit 200 according to an alarm sound and LED display generated according to the voltage intensity of the infrared signal received by the light receiving unit 200.

Accordingly, the operator can rotate the lens holder 130 of the light receiving unit 200 in the vertical and horizontal directions while checking the alarm sound and the LED, and finely adjust the optical axes of the light transmitting unit 100 and the light receiving unit 200. .

The present invention is provided with a separate laser irradiation unit to which a laser beam is irradiated to adjust the optical axis of the transmitting unit and the receiving unit of the infrared detection system, so that it is easy to adjust the optical axis of the transmitting unit and the receiving unit during installation or maintenance work of the infrared detection system. Time can be shortened.

In addition, the present invention is provided with an LED display for displaying the optical axis alignment state of the light transmitting unit and the light receiving unit by LED, it is possible to easily check the alignment of the optical axis of the infrared detection system without a separate voltage measurement tool such as a tester.

In addition, the present invention includes an alarm sound generator that generates a different alarm sound according to the voltage intensity of the infrared signal received by the light receiving unit, so that the operator can check the intensity of the infrared signal received by the light receiving unit through the alarm sound. , Fine adjustment of the optical axis of the light transmitting part and the light receiving part may be possible.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the technical field to which the present invention belongs can make various modifications, changes, and substitutions within the scope not departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings. . The scope of protection of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: light transmitting part 110: base part
111: through hole 130: lens holder
131: lens 133: first rotation axis
135: module mounting groove 140: lens bracket
141: second rotation axis 150: laser irradiation unit
151: laser pointer module 153: power supply
155: laser driving switch 157: coupling guide portion
170: cover 200: light receiving unit
210: point display unit 220: LED display unit
230: alarm sound generator

Claims (7)

An infrared detection system comprising a light transmitting part for irradiating infrared rays and a light receiving part installed opposite to the light transmitting part to receive infrared rays from the light transmitting part,
Each of the light transmitting part and the light receiving part,
A base portion having a plurality of through holes formed therein and fixed to a wall surface or pole of a building; And
It is coupled to the base portion so as to be rotated in the left and right direction, and includes a body provided with a pair of lenses for irradiating or receiving infrared rays,
The light transmitting part,
An infrared detection system equipped with a laser beam for calibrating an infrared sensor, further comprising a laser irradiation unit installed in the main body and configured to irradiate a laser beam for adjusting an optical axis of the light transmitting unit and the light receiving unit separately from the infrared radiation emitted from the light transmitting unit. The method of claim 1,
The laser irradiation unit,
Laser pointer module;
A power supply unit connected to the main body to supply power to the laser pointer module; And
An infrared detection system equipped with a laser beam for calibrating an infrared sensor comprising a laser driving switch for selectively supplying power to the laser pointer module from the power supply unit. The method of claim 2,
The main body,
A lens holder to which the pair of lenses is fixed; And
An infrared detection system equipped with a laser beam for calibrating an infrared sensor including a lens bracket in which the lens holder is inserted and the lens holder can be adjusted in an up-down direction. The method of claim 3,
The lens holder is provided with a module mounting groove for mounting the laser pointer module between the pair of lenses,
The laser irradiation unit,
An infrared detection system equipped with a laser beam for calibrating an infrared sensor, further comprising a guide unit having a shape corresponding to the module mounting groove and guiding coupling of the laser pointer module to the module mounting groove. The method of claim 1,
The light receiving unit,
A laser beam for calibration of an infrared sensor is mounted, further comprising a point display unit provided at a position corresponding to a position where the laser pointer module of the light transmitting unit is installed so that the laser beam irradiated from the laser irradiation unit can be irradiated to an accurate target point. Infrared detection system. The method of claim 1,
The light receiving unit,
An LED display unit for displaying an optical axis adjustment state of the light transmitting unit and the light receiving unit; And
An infrared detection system equipped with a laser beam for calibrating an infrared sensor further comprising an alarm sound generator for generating a different alarm sound according to a voltage intensity of the infrared signal received by the light receiving unit. A method for adjusting an optical axis of an infrared detection system comprising a light transmitting part for irradiating infrared rays and a light receiving part installed opposite to the light transmitting part and receiving infrared rays from the light transmitting part,
Apart from infrared rays, a laser is irradiated from the light transmitting part, and the positions of the light transmitting part and the light receiving part are adjusted so that the laser is irradiated to the light receiving part,
In a state in which infrared rays are irradiated from the light transmitting unit, an alarm sound generated according to the voltage intensity of an infrared signal received from the light receiving unit and an LED displayed on the light receiving unit are used to check the optical axis alignment of the light transmitting unit and the light receiving unit. The optical axis adjustment method of the infrared detection system finely adjusting the optical axes of the light transmitting part and the light receiving part while doing so.

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