Nir and swir band detection sensors

Abstract

The present invention relates to a near-infrared and short-wave infrared band detection sensor capable of preventing various accidents such as theft by external intruders, and in particular, minimizing malfunctions caused by weather changes and enabling easy adjustment of vertical and horizontal angles to ensure accurate reception. The sensor comprises, broadly, a light-emitting unit including a near-infrared light source that irradiates near-infrared (NIR) and a short-wave infrared light source that irradiates short-wave infrared (SWIR); a light-receiving unit including a near-infrared receiver that receives near-infrared from the near-infrared light source and a short-wave infrared receiver that receives short-wave infrared from the short-wave infrared light source; and an alarm-generating unit that generates an alarm. It is characterized by comprising a control unit that controls either or both of the near-infrared light source and the short-wave infrared light source based on collected weather data, and controls the alarm generating unit according to whether the near-infrared receiver receives a near-infrared signal and whether the short-wave infrared receiver receives a short-wave infrared signal.

Description

Technology Field

[0001] The present invention relates to a near-infrared and short-wave infrared band detection sensor that can prevent various accidents such as theft by external intruders, minimize malfunctions caused by weather changes, and further enable easy adjustment of up, down, left, and right angles to ensure accurate reception. Background Technology

[0003] Generally, infrared detectors are devices installed in protected areas such as homes, general buildings, offices, and factories for purposes such as theft prevention and access control. By providing advance warnings of the unexpected entry or exit of people or items, they enable the prevention of theft or various accidents caused by external intruders.

[0004] In relation to such infrared detectors, an infrared detection device equipped with external sensor voltage measurement terminals and transmitters to facilitate maintenance has been proposed in Public Utility Model Publication No. 20-2023-0001235.

[0005] The adjustment work of the above-mentioned Utility Model Publication No. 20-2023-0001235 involves removing the cover, adjusting the sensors of the transmitter and receiver up, down, left, and right while measuring the voltage of the receiver's monitor jack, matching the point where the monitor voltage is highest, and closing the cover to complete the installation.

[0006] However, if the beam axis of the transmitter and receiver is misaligned due to vibration or the like when the above cover is installed, there is a problem in that it is not possible to check or adjust whether the beam axis is accurately aligned from the outside after the cover is installed.

[0007] In addition, there is a problem where detection performance is degraded due to vulnerability to weather changes such as fog and yellow dust. Prior art literature

[0009] Published Utility Model Publication No. 20-2023-0001235 The problem to be solved

[0010] The present invention was created to solve the aforementioned problems and aims to provide a near-infrared and short-wave infrared band detection sensor that can prevent various accidents, such as theft by external intruders, and, in particular, minimize malfunctions caused by weather changes, and furthermore, allows for easy adjustment of the up, down, left, and right angles to enable accurate reception. means of solving the problem

[0012] The present invention, for achieving the above-mentioned purpose, provides a near-infrared and short-wave infrared band detection sensor characterized by comprising: a light-emitting unit including a near-infrared light source that irradiates near-infrared (NIR) and a short-wave infrared light source that irradiates short-wave infrared (SWIR); a light-receiving unit including a near-infrared receiver that receives near-infrared from the near-infrared light source and a short-wave infrared receiver that receives short-wave infrared from the short-wave infrared light source; an alarm-generating unit that generates an alarm; and a control unit that controls either or both of the near-infrared light source and the short-wave infrared light source based on collected weather data, and controls the alarm-generating unit according to whether the near-infrared receiver receives a near-infrared signal and whether the short-wave infrared receiver receives a short-wave infrared signal.

[0014] Here, the light-emitting unit preferably includes a light-emitting device package equipped with one near-infrared light source and another light-emitting device package equipped with one short-wave infrared light source, and the light-receiving unit preferably includes a light-receiving device package equipped with one near-infrared receiver and another light-receiving device package equipped with one short-wave infrared receiver.

[0016] Alternatively, the light-emitting unit preferably includes a plurality of light-emitting element packages, each having one near-infrared light source and one short-wave infrared light source formed as a pair, and the light-receiving unit preferably includes a plurality of light-receiving element packages, each having one near-infrared receiver and one short-wave infrared receiver formed as a pair.

[0018] In addition, it is preferable that the control unit controls the near-infrared light source among the near-infrared light source and the short-wave infrared light source to an ON state when the collected weather data is in a clear environment, controls the short-wave infrared light source among the near-infrared light source and the short-wave infrared light source to an ON state when the collected weather data is in a foggy environment and the fog density value of the collected weather data is compared with a threshold value and the fog density value is greater than or equal to the threshold value compared with the fog density value, and controls the short-wave infrared light source among the near-infrared light source and the short-wave infrared light source to an ON state when the collected weather data is in a yellow dust environment.

[0020] In addition, it is preferable that the control unit controls either or both of the near-infrared light source and the short-wave infrared light source based on the illumination environment.

[0022] Here, it is preferable that the control unit controls both the near-infrared light source and the short-wave infrared light source to the ON state when the illumination environment is nighttime, and controls the near-infrared light source to the ON state among the near-infrared light source and the short-wave infrared light source when the illumination environment is daytime.

[0024] Furthermore, it is preferable that the control unit compares the near-infrared signal reception intensity of the near-infrared receiver and the short-wave infrared signal reception intensity of the short-wave infrared receiver with a threshold value, and if the near-infrared signal reception intensity value and the short-wave infrared signal reception intensity value are less than or equal to the corresponding threshold value compared with the near-infrared signal reception intensity value and the short-wave infrared signal reception intensity value, respectively, amplify the near-infrared signal received by the near-infrared receiver and the short-wave infrared signal received by the short-wave infrared receiver.

[0026] In addition, when the battery saving mode is ON, it is preferable for the control unit to control the near-infrared light source to the ON state among the near-infrared light source and the short-wave infrared light source.

[0028] In addition, a rotating bracket; an angle adjustment bracket in which the upper part is received inside the rotating bracket with the upper part pivotally coupled to the inner center of the rotating bracket, and the one side and the other side rotate in place together with the one side and the other side of the rotating bracket, respectively, with respect to the upper part to adjust the left and right angles; and a reflector in which the one side center and the other side center are received inside the angle adjustment bracket with the one side center and the other side center of the inner surface of the angle adjustment bracket, respectively, and the upper part and the lower part rotate in the up and down direction of the angle adjustment bracket with respect to the one side center and the other side center, respectively, to adjust the up and down angles, and the one side and the other side rotate together with the one side and the other side of the angle adjustment bracket to adjust the left and right angles. It is preferable that the above-mentioned reflector is provided on the front side of the above-mentioned reflector, and the light-emitting part or the light-receiving part is provided on the inner side so as to face the above-mentioned reflector in an oblique direction, and for angle adjustment of either one or both of the light-emitting part and the light-receiving part, the upper and lower parts are rotated together with the upper and lower parts of the above-mentioned reflector to adjust the vertical angle, and one side and the other side are rotated together with the one side and the other side of the above-mentioned reflector to adjust the horizontal angle, and one or both of the near-infrared rays and short-wave infrared rays of the light-emitting part are transmitted; and the angle adjustment part comprises a left-right angle adjustment member that adjusts the horizontal angles of the one side and the other side of the rotating bracket, the one side and the other side of the angle adjustment bracket, the one side and the other side of the above-mentioned reflector, and the one side and the other side of the cover plate, and an vertical angle adjustment member that adjusts the vertical angles of the upper and lower parts of the above-mentioned reflector and the upper and lower parts of the cover plate.

[0030] Here, the left and right angle adjustment member comprises: a first front plate formed extending a certain length in the downward direction of the rotating bracket on the other side of the front lower surface of the rotating bracket; and a first rear plate formed protruding a certain length in the inward direction of the angle adjustment bracket on the other side of the upper inner circumference of the angle adjustment bracket so as to be positioned in the rear direction of the first front plate while facing the first front plate; It is configured to include a left-right angle adjustment bolt that adjusts the left-right angles of one side and the other of the rotating bracket, one side and the other of the angle adjustment bracket, one side and the other of the reflector, and one side and the other of the cover plate, by being fastened to the first front plate and the first rear plate respectively while penetrating the first front plate and the first rear plate; and the upper-lower angle adjustment member comprises a second front plate formed to protrude a certain length inwardly toward the angle adjustment bracket on one side of the upper front of the angle adjustment bracket; and a second rear plate formed to protrude a certain length upwardly toward the reflector on one side of the upper of the reflector so as to be positioned in the rearward direction of the second front plate while facing the second front plate; It is preferable that the device be configured to include an up-and-down angle adjustment bolt that adjusts the up-and-down angles of the upper and lower parts of the reflector and the upper and lower parts of the cover plate, with the front and rear parts respectively fastened to the second front plate and the second rear plate while penetrating the second front plate and the second rear plate. Effects of the invention

[0032] The present invention can prevent various accidents, such as theft by external intruders, in advance through the near-infrared light source and short-wave infrared light source of the light-emitting unit. In particular, since the short-wave infrared (SWIR) emitted by the short-wave infrared light source has a longer wavelength than the near-infrared (NIR) emitted by the near-infrared light source, scattering can be minimized in weather environments such as fog and yellow dust, thereby minimizing malfunctions caused by weather changes. Furthermore, the invention has the effect of easily adjusting the up-down-left-right angles of the light-emitting unit and the light-receiving unit, respectively, so that the near-infrared light source and the short-wave infrared light source of the light-emitting unit can be accurately received by the near-infrared receiver and the short-wave infrared receiver of the light-receiving unit. Brief explanation of the drawing

[0034] FIG. 1 is a cross-sectional view schematically showing the arrangement of the light-emitting part and the light-receiving part of a near-infrared and short-wave infrared band detection sensor, which is an embodiment of the present invention. FIG. 2 is a front view schematically showing an example of the installation of a near-infrared light source, a short-wave infrared light source, a near-infrared receiver, and a short-wave infrared receiver. FIG. 3 is a front view schematically showing another installation example of a near-infrared light source, a short-wave infrared light source, a near-infrared receiver, and a short-wave infrared receiver. Figure 4 is a block diagram schematically showing the control state of the control unit. Figure 5 is a flowchart schematically showing the operation process of the light-emitting unit according to the collected weather data. FIG. 6 is a bottom perspective view schematically showing a rotating bracket, an angle adjustment bracket, a reflector, a cover plate, and an angle adjustment part. Fig. 7 is a separated bottom perspective view of Fig. 6. Figure 8 is a cross-sectional view along line A-A of Figure 6 schematically showing the left and right angle adjustment state of the angle adjustment bracket. Figure 9 is a cross-sectional view taken along line B-B of Figure 6, schematically showing the vertical angle adjustment state of the reflector. Specific details for implementing the invention

[0035] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. Of course, the scope of the present invention is not limited to the following embodiments, and various modifications can be made by those skilled in the art within the scope of the technical essence of the present invention.

[0037] FIG. 1 is a cross-sectional view schematically showing the arrangement of the light-emitting part and the light-receiving part of a near-infrared and short-wave infrared band detection sensor, which is an embodiment of the present invention.

[0039] A near-infrared and short-wave infrared band detection sensor, which is an embodiment of the present invention, is largely composed of a light-emitting unit (10), a light-receiving unit (20), an alarm-generating unit, and a control unit, as shown in FIG. 1.

[0040] First, the light-emitting unit (10) is intended to irradiate either or both of near-infrared (NIR) and short-wave infrared (SWIR) to the light-receiving unit (20).

[0042] FIG. 2 is a front view schematically showing an example of the installation of a near-infrared light source, a short-wave infrared light source, a near-infrared receiver, and a short-wave infrared receiver.

[0044] As shown in FIG. 2, the above-mentioned light-emitting unit (10) may be configured to include a near-infrared light source (110) that emits near-infrared rays (NIR) and a short-wave infrared light source (120) that emits short-wave infrared rays (SWIR).

[0045] The above near-infrared light source (110) can be made of various types, such as near-infrared (NIR) LED chips.

[0046] The above short-wave infrared light source (120) can be made of various types of short-wave infrared (SWIR) LED chips.

[0047] The light-emitting unit (10) may be configured to further include, for example, a light-emitting device package (131) equipped with one near-infrared light source (110) and another light-emitting device package (132) equipped with one short-wave infrared light source (120), as seen in FIG. 2 a) and b).

[0048] One near-infrared light source (110) may be mounted in the center of the front of the light-emitting element package (131), or one near-infrared light source (110) may be mounted eccentrically on the front of the light-emitting element package (131).

[0049] One short-wave infrared light source (120) may be mounted in the center of the front of another light-emitting element package (132), or one short-wave infrared light source (120) may be mounted eccentrically on the front of another light-emitting element package (132).

[0050] Next, the light receiving unit (20) is for receiving either or both of near-infrared (NIR) and short-wave infrared (SWIR) from the light transmitting unit (10).

[0051] The above-mentioned light receiving unit (20) may be largely configured to include a near-infrared receiving unit (210) that receives near-infrared (NIR) from the near-infrared light source (110), and a short-wave infrared receiving unit (220) that receives short-wave infrared (SWIR) from the short-wave infrared light source (120).

[0052] The above near-infrared receiver (210) can be made of various types, such as a silicon pin photodiode.

[0053] The above short-wave infrared receiver (220) can be made of various types, such as an InGaAs PIN PHOTODIODE.

[0054] The light receiving unit (20) may be configured to further include, for example, a light receiving element package (231) equipped with one of the near-infrared receivers (210) as shown in FIG. 2 a) and b), and another light receiving element package (232) equipped with one of the short-wave infrared receivers (220).

[0055] One near-infrared receiver (210) may be mounted in the center of the front of the light receiving element package (231), or one near-infrared receiver (210) may be mounted eccentrically on the front of the light receiving element package (231).

[0056] One short-wave infrared receiver (220) may be mounted in the center of the front of another light-receiving element package (232), or one short-wave infrared receiver (220) may be mounted eccentrically on the front of another light-receiving element package (232).

[0058] FIG. 3 is a front view schematically showing another installation example of a near-infrared light source, a short-wave infrared light source, a near-infrared receiver, and a short-wave infrared receiver.

[0060] Meanwhile, as another example, the light-emitting unit (10) may be configured to further include a plurality of light-emitting element packages (133), and as shown in FIG. 3 a) and b), each of the plurality of light-emitting element packages (133) may be equipped with one near-infrared light source (110) and one short-wave infrared light source (120) forming a set.

[0061] This is intended to simplify the circuit of the plurality of light-emitting element packages (133) and improve the response speed for circuit processing of one near-infrared light source (110) and one short-wave infrared light source (120), as well as to simplify the installation space and structure of one near-infrared light source (110) and one short-wave infrared light source (120).

[0062] One near-infrared light source (110) and one short-wave infrared light source (120), forming a set in each of the front middle portions of the plurality of light-emitting element packages (133), can be mounted at regular intervals in the vertical direction of each of the plurality of light-emitting element packages (133).

[0063] In addition, as another example, the light receiving unit (20) may be configured to further include a plurality of light receiving element packages (233), wherein each of the plurality of light receiving element packages (233) may be equipped with one near-infrared receiver (210) and one short-wave infrared receiver (220) forming a pair.

[0064] This is intended to simplify the circuit of the plurality of photodetector packages (233) and improve the response speed for circuit processing of one near-infrared receiver (210) and one short-wave infrared receiver (220), as well as to simplify the installation space and structure of one near-infrared receiver (210) and one short-wave infrared receiver (220).

[0066] Figure 4 is a block diagram schematically showing the control state of the control unit.

[0068] Next, the alarm generating unit (30) is intended to notify the manager, etc., of the occurrence of various accidents, such as theft by an external intruder.

[0069] The above alarm generating unit (30) may be composed of either or both of a speaker that outputs an alarm sound such as a siren sound or a light-emitting member such as an LED that emits light.

[0070] Next, the control unit (40) controls either or both of the near-infrared light source (110) and the short-wave infrared light source (120) based on the collected weather data as seen in FIG. 4, and also controls the alarm generation unit (30) according to whether the near-infrared (NIR) signal is received by the near-infrared receiver (210) and whether the short-wave infrared signal is received by the short-wave infrared receiver (220).

[0071] For example, although not shown in the drawing, a weather server may be provided to collect weather data of various types, such as weather condition information from the Korea Meteorological Administration, visibility distance obtained through a visibility meter, and weather information collected from an Automatic Weather System (AWS).

[0073] Figure 5 is a flowchart schematically showing the operation process of the light-emitting unit according to the collected weather data.

[0075] When the weather data collected from the above weather server is a clear environment where there are no clouds in the sky and no fog, yellow dust, etc. occur, as shown in FIG. 5, the near-infrared light source (110) among the near-infrared light source (110) and the short-wave infrared light source (120) can be operated in an ON state by receiving power from a power supply unit (41) which can be made of various types such as a battery, under the control of the control unit (40).

[0076] At this time, the near-infrared receiver (210) can receive near-infrared (NIR) from the near-infrared light source (110).

[0077] When near-infrared rays (NIR) are continuously received by the near-infrared receiver (210), the alarm generating unit (30) may be stopped from operating in an OFF state by the control of the control unit (40).

[0078] Here, for example, when near-infrared (NIR) irradiated from the near-infrared light source (110) to the near-infrared receiver (210) is blocked, the control unit (40) can control the alarm generating unit (30) by comparing the near-infrared (NIR) blocking time with the reference blocking time set in the control unit (40).

[0079] If the near-infrared (NIR) shielding time to the above near-infrared receiver (210) exceeds the reference shielding time, the control unit (40) determines that the near-infrared (NIR) is shielded by an external intruder, and that there is a high likelihood of various accidents such as theft by an external intruder occurring. In order to prevent this, the alarm generating unit (30) can be controlled to operate in an ON state by receiving power from the power supply unit (41).

[0080] If the near-infrared (NIR) shading time to the near-infrared receiver (210) is less than or equal to the reference shading time, the control unit (40) determines that the near-infrared (NIR) to the near-infrared receiver (210) is temporarily blocked by various types of foreign substances such as falling leaves and tree branches, and can control the alarm generating unit (30) to stop operating in an OFF state.

[0081] Next, when the weather data collected from the weather server is in a foggy environment, as shown in FIG. 5, the control unit (40) can compare the fog density value of the collected weather data with a threshold value set in the control unit (40) and control the short-wave infrared light source (120) among the near-infrared light source (110) to an ON state.

[0082] In the case of near-infrared rays (NIR) irradiated by the above near-infrared light source (110), there is a problem in that the detection performance of the near-infrared ray receiver (210) receiving and detecting the near-infrared rays (NIR) is reduced due to the light being blocked by weather changes such as fog, yellow dust, and snow.

[0083] On the other hand, the short-wave infrared (SWIR) irradiated by the short-wave infrared light source (120) has a longer wavelength than the near-infrared (NIR) irradiated by the near-infrared light source (110), so it has high transmittance in weather environments such as fog, yellow dust, and snow. Therefore, compared to near-infrared (NIR), it is not easily affected by fine particles in weather environments such as fog, yellow dust, and snow, and scattering in weather environments such as fog and yellow dust can be minimized, which has the advantage of minimizing malfunctions caused by shading due to weather changes such as fog, yellow dust, and snow.

[0084] If the fog density value of the collected weather data is less than the corresponding threshold value compared with the fog density value, the near-infrared light source (110) among the near-infrared light source (110) and the short-wave infrared light source (120) can be operated in an ON state by the control of the control unit (40).

[0085] If the fog density value of the collected weather data is greater than or equal to the corresponding threshold value compared with the fog density value, the short-wave infrared light source (120) among the near-infrared light source (110) and the short-wave infrared light source (120) can be operated in an ON state by the control of the control unit (40).

[0086] When short-wave infrared (SWIR) is continuously received by the short-wave infrared receiver (220), the alarm generating unit (30) may be stopped from operating in an OFF state by the control of the control unit (40).

[0087] Here, for example, when the short-wave infrared (SWIR) irradiated from the short-wave infrared light source (120) to the short-wave infrared receiver (220) is blocked, the control unit (40) can control the alarm generating unit (30) by comparing the blocking time of the short-wave infrared (SWIR) with the reference blocking time set in the control unit (40).

[0088] If the short-wave infrared (SWIR) shielding time to the short-wave infrared receiver (220) exceeds the standard shielding time, the control unit (40) determines that the short-wave infrared (SWIR) is shielded by an external intruder, and that there is a high likelihood of various accidents such as theft by an external intruder occurring. In order to prevent this, the alarm generating unit (30) can be controlled to operate in an ON state by receiving power from the power supply unit (41).

[0089] When the short-wave infrared (SWIR) shielding time to the short-wave infrared receiver (220) is less than or equal to the reference shielding time, the control unit (40) determines that the short-wave infrared (SWIR) to the short-wave infrared receiver (220) is temporarily blocked by various types of foreign substances such as falling leaves and tree branches, and can control the alarm generating unit (30) to stop operating in an OFF state.

[0090] Next, when the weather data collected from the weather server is in a yellow dust environment, as shown in FIG. 5, the control unit (40) can control the short-wave infrared light source (120) among the near-infrared light source (110) and the short-wave infrared light source (120) to an ON state. At this time, since the operation method of the alarm generating unit (30) is the same as the operation method of the alarm generating unit (30) in the foggy environment described above, a repetitive explanation will be omitted below.

[0091] And, although not illustrated in the drawing, when the weather data collected from the weather server is in a snowy environment, the control unit (40) can control the short-wave infrared light source (120) among the near-infrared light source (110) and the short-wave infrared light source (120) to an ON state. At this time, since the operation method of the alarm generating unit (30) is the same as the operation method of the alarm generating unit (30) in the foggy environment and yellow dust environment described above, a repetitive explanation will be omitted below.

[0092] Next, based on the illuminance environment of the weather data collected from the weather server or the illuminance environment measured through a separate illuminance sensor, the control unit (40) can control either or both of the near-infrared light source (110) and the short-wave infrared light source (120).

[0093] When the external illumination environment around the light-emitting unit (10) and the light-receiving unit (20) is nighttime, as shown in FIG. 5, both the near-infrared light source (110) and the short-wave infrared light source (120) can be controlled to operate in the ON state by the control of the control unit (40).

[0094] At night, as solar interference disappears, the signal-to-noise ratio (SNR) of the detection signal relative to the background infrared (Background IR) signal improves.

[0095] Accordingly, the near-infrared receiver (210) can detect minute near-infrared (NIR) changes more accurately, and the short-wave infrared receiver (220) can detect minute short-wave infrared (SWIR) changes more easily.

[0096] Furthermore, external intruders tend to be active primarily at night, and since the Short Wave Infrared (SWIR) band offers excellent detection performance even in environments such as fog and haze, simultaneously activating Near Infrared (NIR) and Short Wave Infrared (SWIR) can not only maximize the reliability of nighttime intruder detection but also improve intrusion detection performance compared to existing systems and enhance security by minimizing false alarms.

[0097] When the external illumination environment around the light-emitting unit (10) and the light-receiving unit (20) is daytime, the near-infrared light source (110) among the near-infrared light source (110) and the short-wave infrared light source (120) can be controlled to operate in an ON state by the control of the control unit (40).

[0098] During the day, the broadband near-infrared (NIR) component contained in sunlight is strongly present, so there is a possibility that the receiver (photodiode) of a general detector may become saturated due to the influence of sunlight.

[0099] However, the near-infrared (NIR) LED chip capable of forming the above near-infrared light source (110) and the short-wave infrared (SWIR) LED chip capable of forming the above short-wave infrared light source (120) have the advantage of maintaining a constant intensity of the detection signal, as they have a higher light output and a relatively lower cost compared to general LEDs.

[0100] Accordingly, during the day, the near-infrared light source (110) is controlled to operate in an ON state by the control of the control unit (40), and signal modulation (e.g., frequency modulation or pulse modulation) is applied so that it can be easily distinguished from a continuous signal (DC component) such as sunlight.

[0101] This allows for maintaining detection reliability while minimizing solar interference.

[0102] Next, in order to prevent a decrease in the near-infrared (NIR) reception efficiency of the near-infrared receiver (210) and the short-wave infrared (SWIR) reception efficiency of the short-wave infrared receiver (220), the control unit (40) can compare the near-infrared (NIR) signal reception strength of the near-infrared receiver (120) and the short-wave infrared (SWIR) signal reception strength of the short-wave infrared receiver (220), as shown in FIG. 5, with the corresponding threshold value set in the control unit.

[0103] Here, although not shown in the drawing, an amplification unit may be provided to amplify the near-infrared (NIR) pulse waveform received by the near-infrared receiver (210) and the short-wave infrared (SWIR) pulse waveform received by the short-wave infrared receiver (220).

[0104] When the near-infrared (NIR) signal reception intensity value of the near-infrared receiver (210) is less than or equal to the corresponding threshold value compared with the near-infrared (NIR) signal reception intensity value of the near-infrared receiver (210), the amplification unit can amplify the near-infrared (NIR) signal pulse waveform received by the near-infrared receiver (210) under the control of the control unit (40).

[0105] If the near-infrared (NIR) signal reception intensity value of the near-infrared receiver (210) exceeds a corresponding threshold value compared with the near-infrared (NIR) signal reception intensity value of the near-infrared receiver (210), the amplification unit may not amplify the near-infrared (NIR) signal pulse waveform received by the near-infrared receiver (210) under the control of the control unit (40).

[0106] When the short-wave infrared (SWIR) signal reception strength value of the short-wave infrared receiver (220) is less than or equal to the corresponding threshold value compared with the short-wave infrared (SWIR) reception strength value of the short-wave infrared receiver (220), the amplification unit can amplify the short-wave infrared (SWIR) signal pulse waveform received by the short-wave infrared receiver (220) under the control of the control unit (40).

[0107] If the short-wave infrared (SWIR) signal reception strength value of the short-wave infrared receiver (220) exceeds the corresponding threshold value compared with the short-wave infrared (SWIR) signal reception strength value of the short-wave infrared receiver (220), the amplification unit may not amplify the short-wave infrared (SWIR) signal pulse waveform received by the short-wave infrared receiver (220) under the control of the control unit (40).

[0108] Next, although not shown in the drawing, a battery saving switch for switching the battery that can form the power supply unit (41) to an ON or OFF state in a battery saving mode or a battery voltage detection unit for detecting the remaining voltage value of the battery that can form the power supply unit (41) may be further provided.

[0109] The control unit (40) can control the battery saving mode to ON and OFF states by comparing the output signal of the battery saving switch or the remaining battery voltage value detected by the battery voltage detection unit with the reference voltage value set in the control unit (40).

[0110] The battery saving switch can be provided in various ways, such as a push button or a dial button, on the control unit (40).

[0111] When an output signal is output from the battery saving switch to turn on the battery that can form the power supply unit (41) into a battery saving mode, or when the remaining voltage value of the battery detected by the battery voltage detection unit is less than or equal to the reference voltage value, the battery saving mode can be set to an ON state by the control of the control unit (40).

[0112] When the battery saving mode is set to ON, the control unit (40) can control the near-infrared light source (110) among the near-infrared light source (110) and the short-wave infrared light source (120) to ON in order to optimize battery power so that the voltage usage time of the battery that can form the power supply unit (41) can be extended.

[0113] When an output signal to turn off the battery saving mode is output from the battery saving switch or when the remaining battery voltage value detected by the battery voltage detection unit exceeds the reference voltage value, the battery saving mode may be released to the OFF state by the control unit (40) DMJL control.

[0114] When the battery saving mode is set to OFF, the control unit (40) can control either or both of the near-infrared light source (110) and the short-wave infrared light source (120) based on weather data collected through the weather server.

[0115] As described above, the present invention has the advantage of preventing various accidents, such as theft by external intruders, through the near-infrared light source (110) and short-wave infrared light source (120) of the light-emitting unit (10).

[0117] FIG. 6 is a bottom perspective view schematically showing a rotating bracket, an angle adjustment bracket, a reflector, a cover plate, and an angle adjustment part, and FIG. 7 is an exploded bottom perspective view of FIG. 6.

[0119] Next, in order to easily adjust the up-down-left-right angles of the light-emitting unit and the light-receiving unit so that the near-infrared light source and the short-wave infrared light source of the light-emitting unit can be accurately received by the near-infrared receiver and the short-wave infrared receiver of the light-receiving unit, respectively, a rotating bracket (11), an angle adjustment bracket (12), a reflector (13), a cover plate (14), and an angle adjustment unit (15) may be provided as shown in FIGS. 6 and 7.

[0120] First, two base sections (5) consisting of one base section (5) and another base section (5) can be installed at a certain height on a wall of a building, a terminal box, or a pole, etc., while facing each other.

[0121] In the middle portions of the two base portions (5), housings (7) that protrude forward in the direction of the base portions (5) can be provided in various ways, such as by bolt fixing, so that they face each other.

[0122] The above housing (7) may be equipped with the alarm generating unit (30) and the control unit (40).

[0123] The center of the rotating bracket (11) can be axially coupled to the lower center of the housing (7) so that the rotating bracket (11) can rotate in place with respect to the center of the rotating bracket (11).

[0124] The upper part of the angle adjustment bracket (12) can be received inside the rotation bracket (11) while the upper part of the angle adjustment bracket (12) is axially coupled to the inner part of the rotation bracket (11).

[0125] The lower center of the angle adjustment bracket (12) can be axially coupled to the lower front middle part of the base part (5).

[0126] Based on the upper center and lower center of the angle adjustment bracket (12), one side and the other side of the angle adjustment bracket (12) can be rotated clockwise and counterclockwise, respectively, together with one side and the other side of the rotation bracket (11), thereby allowing left and right angle adjustment.

[0127] The reflector (13) can be accommodated inside the angle adjustment bracket (12) in a state where the center of one side and the center of the other side of the reflector (13) are respectively pivotally coupled to the center of one side and the center of the other side of the inner surface of the angle adjustment bracket (12).

[0128] The upper and lower parts of the reflector (13) can be rotated and moved in the up and down direction of the angle adjustment bracket (12) respectively, based on the center of one side and the center of the other side of the reflector (13), thereby allowing the up and down angle to be adjusted.

[0129] And, one side and the other side of the reflector (13) can be rotated clockwise and counterclockwise, respectively, together with one side and the other side of the angle adjustment bracket (12), so that the left and right angles can be adjusted.

[0130] The front side of the above reflector (13) can be opened.

[0131] The above cover plate (14) can be provided in various ways, such as by bolt fixing, while closing the front side of the reflector (13) located in the lower direction of the housing (7) of one base part (5) and the front side of the reflector located in the lower direction of the housing (7) of another base part (5).

[0132] The above cover plate (14) may, for example, be made of an acrylic material having transparency that allows either or both of near-infrared (NIR) and short-wave infrared (SWIR) to pass through, but is not necessarily limited thereto, and any material that allows near-infrared (NIR) and short-wave infrared (SWIR) to pass through can be used.

[0133] The cover plate (14), which is in a closed state with the front side of the reflector (13) located in the lower direction of the housing (7) of one base part (5) and the front side of the reflector located in the lower direction of the housing (7) of another base part (5), can face each other along one base part (5) and another base part (5) as seen in FIG. 1.

[0134] In the inner middle portion of the cover plate (14), which is in a closed state with the front side of the reflector (13) located in the lower direction of the housing (7) of one base part (5), a light-emitting part (10) of one example or a light-emitting part (10) of another example may be provided at regular intervals in the upper and lower direction of one base part (5).

[0135] One example of a light-emitting part (10) or another example of a light-emitting part (10) provided at regular intervals in the upper and lower directions in the inner middle part of the cover plate (14), which is in a closed state with the front side of the reflector (13) located in the lower direction of the housing (7) of one of the base parts (5), may be provided at a certain angle in a diagonal direction, alternately facing the upper direction of the inner surface of the reflector (13) and the lower direction of the inner surface of the reflector (13), so that the upper and lower inner surfaces of the reflector (13) can face each other.

[0136] In the inner middle portion of the cover plate (14), which is in a closed state with the front side of the reflector (13) located in the lower direction of the housing (7) of another base part (5) facing one base part (5), a plurality of light receiving parts (20) of one example or another example may be provided at regular intervals in the upper and lower direction of the other base part (5).

[0137] One example of a light receiving part (20) or another example of a light receiving part (20) provided at regular intervals in the vertical direction in the inner middle part of the cover plate (14), which is in a closed state with the front side of the reflector (13) located in the lower direction of the housing (7) of another base part (5), may be provided at a certain angle in the diagonal direction, alternately facing the upper direction of the inner surface of the reflector (13) and the lower direction of the inner surface of the reflector (13), so that the upper and lower inner surfaces of the reflector (13) can face each other.

[0138] The near-infrared (NIR) and short-wave infrared (SWIR) rays of the light-emitting unit (10) can be reflected by the reflector (13) and irradiated to the light-receiving unit (20).

[0139] In order to adjust the vertical angle of either or both of the light-emitting part (10) and the light-receiving part (20), the upper and lower parts of the cover plate (14) can be rotated together with the upper and lower parts of the reflector (13) to adjust the vertical angle.

[0140] In order to adjust the left and right angles of either one or both of the light-emitting part (10) and the light-receiving part (20), one side and the other side of the cover plate (14) can be rotated together with one side and the other side of the reflector (13) to adjust the left and right angles.

[0141] As shown in FIG. 7, the angle adjustment unit (15) can be configured to include a left-right angle adjustment member (151) and an up-down angle adjustment member (152).

[0142] The above left and right angle adjustment member (151) can adjust the left and right angles of one side and the other side of the rotating bracket (11), one side and the other side of the angle adjustment bracket (12), one side and the other side of the reflector (13), and one side and the other side of the cover plate (14).

[0143] To this end, the left and right angle adjustment member (151) may be configured to include, for example, a first front plate (151a), a first rear plate (151b), and a left and right angle adjustment bolt (151c).

[0144] The first front plate (151a) can be formed to extend a certain length in the downward direction of the rotating bracket (11) from the other side of the front lower surface opposite to one side of the front lower surface of the rotating bracket (11).

[0145] The first rear plate (151b) may be formed to protrude a certain length in the inner direction of the angle adjustment bracket (12) on the other side of the upper inner surface opposite to one side of the first front plate (151a) so as to be positioned in the rear direction opposite to the front side of the first front plate (151a) while facing the first front plate (151a).

[0146] The left and right angle adjustment bolt (151c) can sequentially penetrate the center of the first front plate (151a) and the center of the first rear plate (151b), respectively. At this time, the front side of the left and right angle adjustment bolt (151c) can be fastened in a screw-coupled state to the center of the first front plate (151a), and the rear side of the left and right angle adjustment bolt (151c) can penetrate the center of the first rear plate (151b).

[0147] In order to prevent the left and right angle adjustment bolt (151c) from detaching from the first front plate (151a) and the first rear plate (151b), the left and right angle adjustment member (151) may further include a first nut (151d) that is screw-coupled to the rear side of the left and right angle adjustment bolt (151c) which is in a state of penetrating the center of the first rear plate (151b).

[0149] Figure 8 is a cross-sectional view along line A-A of Figure 6 schematically showing the left and right angle adjustment state of the angle adjustment bracket.

[0151] For example, when a worker rotates the left and right angle adjustment bolt (151c) in a clockwise direction in place using a tool such as a screwdriver together with the first nut (151d), the first front plate (151a) moves backward toward the rear of the left and right angle adjustment bolt (151c), and one side and the other side of the rotating bracket (11) can gradually rotate and move clockwise (see solid arrow in FIG. 8) as shown in FIG. 8.

[0152] And, as the left and right angle adjustment bolt (151c) and the front and rear sides are each gradually rotated clockwise, the left and right angle adjustment bolt (151c) can be tilted, and at the same time, as the rear side of the left and right angle adjustment bolt (151c) presses the first rear plate (151b) clockwise, one side and the other side of the angle adjustment bracket (12) together with the first rear plate (151b) can gradually rotate clockwise.

[0153] When the worker rotates the left and right angle adjustment bolt (151c) in place using a tool such as a screwdriver together with the first nut (151d), the first front plate (151a) advances in the front direction of the left and right angle adjustment bolt (151c), and the one side and the other side of the rotation bracket (11) can gradually rotate in a counterclockwise direction (see dotted arrow in FIG. 8).

[0154] And, the front and rear sides of the left and right angle adjustment bolt (151c) can also be gradually rotated counterclockwise, causing the left and right angle adjustment bolt (151c) to tilt, and at the same time, the rear side of the left and right angle adjustment bolt (151c) presses the first rear plate (151b) counterclockwise, causing one side and the other side of the angle adjustment bracket (12) to gradually rotate counterclockwise together with the first rear plate (151b).

[0155] The above-described upper and lower angle adjustment member (152) can adjust the upper and lower angles of the upper and lower parts of the reflector (13) and the upper and lower parts of the cover plate (14).

[0156] To this end, the above-described vertical angle adjustment member (152) may be configured to include, for example, a second front plate (152a), a second rear plate (152b), and a vertical angle adjustment bolt (152c), as shown in FIG. 7.

[0157] The second front plate (152a) can be formed to protrude a certain length inwardly from one side of the upper front side of the angle adjustment bracket (12) toward the angle adjustment bracket (12).

[0158] A through hole (152f) may be formed in the central part of the second front plate (152a), or a slit extending a certain length in the vertical direction of the second front plate (152) may be formed.

[0159] The second rear plate (152b) may be formed to protrude a certain length in the upward direction of the reflector (13) from one side of the upper outer surface of the reflector (13) so that the front side of the second front plate (152a) is positioned in the rear direction, which is the opposite side, while facing the second front plate (152a).

[0160] A through hole (152g) may be formed in the middle portion of the second rear plate (152b) above.

[0161] In the rear middle portion of the second rear plate (152b), a guide groove (152e) communicating with the through hole (152g) of the second rear plate (152b) may be formed extending a certain length in the vertical direction of the second rear plate (152b).

[0162] The upper and lower parts of the above guide groove (152e) can be opened.

[0163] The above-described vertical angle adjustment bolt (152c) can sequentially penetrate the through hole (152f) of the second front plate (152a) and the through hole (152g) of the second rear plate (152b), and at this time, the inner diameter of the through hole (152f) of the second front plate (152a) can be formed larger than the outer diameter of the vertical angle adjustment bolt (152c), and the rear side of the vertical angle adjustment bolt (152c) can be fastened in a screw-coupled state to the through hole (152g) of the second rear plate (152b).

[0165] Figure 9 is a cross-sectional view taken along line B-B of Figure 6, schematically showing the vertical angle adjustment state of the reflector.

[0167] In order to prevent the upper / lower angle adjustment bolt (152c) from detaching from the second front plate (152a) and the second rear plate (152b), the upper / lower angle adjustment member (152) may further include a second nut (152d) which is screw-coupled to the rear side of the upper / lower angle adjustment bolt (152c) that has passed through the through hole (152g) of the second rear plate (152b) and is received in the guide groove (152e) of the second rear plate (152b).

[0168] One side and the other side of the second nut (152d) may each come into surface contact with the inner surface of one side and the inner surface of the other side of the guide groove (152e) of the second rear plate (152b).

[0169] The second nut (152d) can be positioned in a state where it is moved in the up-and-down direction of the guide groove (152e) during the process of moving back and forth along the second rear plate (152b).

[0170] For example, when the worker rotates the upper / lower angle adjustment bolt (152c) in a counterclockwise direction in place using a tool such as a screwdriver, the second rear plate (152b) is advanced in the front direction of the upper / lower angle adjustment bolt (152c) together with the second nut (152d), and the upper and lower parts of the reflector (13) are rotated and moved in a counterclockwise direction (see solid arrow in FIG. 9), thereby allowing the upper and lower angles to be adjusted.

[0171] During the process in which the upper and lower parts of the above-mentioned reflector (13) are each rotated counterclockwise, the front and rear parts of the above-mentioned angle adjustment bolt (152c) are also each rotated counterclockwise by a certain angle, and the above-mentioned angle adjustment bolt (152c) may be tilted.

[0172] When the operator rotates the upper / lower angle adjustment bolt (152c) in a clockwise direction in place using a tool such as a screwdriver, the second rear plate (152b) moves backward along with the second nut (152d) in the rearward direction of the upper / lower angle adjustment bolt (152c), and the upper and lower parts of the reflector (13) are rotated clockwise (see dotted arrow in FIG. 9) respectively, thereby allowing the upper and lower angles to be adjusted.

[0173] During the process in which the upper and lower parts of the above-mentioned reflector (13) are each rotated clockwise, the front and rear parts of the above-mentioned angle adjustment bolt (152c) are also each rotated clockwise by a certain angle, and the above-mentioned angle adjustment bolt (152c) may be tilted.

[0174] The rotating bracket (11), the angle adjustment bracket (12), the reflector (13), the cover plate (14), and the angle adjustment part (15) may also be provided in the upper direction of the housing (7).

[0175] At this time, the rotating bracket (11), the angle adjustment bracket (12), the reflector (13), the cover plate (14), and the angle adjustment part (15) provided in the lower direction of the housing (7), and the rotating bracket (11), the angle adjustment bracket (12), the reflector (13), the cover plate (14), and the angle adjustment part (15) provided in the upper direction of the housing (7) can be point-symmetric.

[0176] Additionally, a cover frame (16) may be further provided to protect the base part (5), the housing (7), the rotating bracket (11), the angle adjustment bracket (12), the reflector (13), the cover plate (14), and the angle adjustment part (15) while covering them.

[0177] The above cover frame (16) can be formed to extend vertically along the base part (5) for a certain length.

[0178] The rear side of the cover frame (16) may be open, and the base part (5), the housing (7), the rotating bracket (11), the angle adjustment bracket (12), the reflector (13), the cover plate (14), and the angle adjustment part (15) may be accommodated inside the cover frame (16), and the edge portion of the base part (5) may be accommodated in various ways, such as by press-fit fixation, inside the edge of the cover frame (16).

[0179] Alternatively, the edge portion of the base portion (5) can be secured in various ways, such as by bolt fastening, while being received on the inner edge of the cover frame (16).

[0180] The above cover frame (16) may, for example, be made of an acrylic material having transparency that allows one or both of near-infrared (NIR) and short-wave infrared (SWIR) to pass through, but is not necessarily limited thereto, and any material that allows near-infrared (NIR) and short-wave infrared (SWIR) to pass through can be used. Explanation of the symbols

[0182] 10; light-transmitting part, 20; light receiving unit, 30; Alarm generating unit, 40; control unit.

Claims

Claim 1 A near-infrared and short-wave infrared band detection sensor characterized by comprising: a light-emitting unit including a near-infrared light source that emits near-infrared (NIR) and a short-wave infrared light source that emits short-wave infrared (SWIR); a light-receiving unit including a near-infrared receiver that receives near-infrared from the near-infrared light source and a short-wave infrared receiver that receives short-wave infrared from the short-wave infrared light source; an alarm-generating unit that generates an alarm; and a control unit that controls either or both of the near-infrared light source and the short-wave infrared light source based on collected weather data, and controls the alarm-generating unit according to whether the near-infrared receiver receives a near-infrared signal and whether the short-wave infrared receiver receives a short-wave infrared signal. Claim 2 A near-infrared and short-wave infrared band sensing sensor according to claim 1, wherein the light-emitting unit comprises a light-emitting element package equipped with one near-infrared light source and another light-emitting element package equipped with one short-wave infrared light source, and the light-receiving unit comprises a light-receiving element package equipped with one near-infrared receiver and another light-receiving element package equipped with one short-wave infrared receiver. Claim 3 A near-infrared and short-wave infrared band sensing sensor according to claim 1, wherein the light-emitting unit comprises a plurality of light-emitting element packages each having one near-infrared light source and one short-wave infrared light source formed as a pair, and the light-receiving unit comprises a plurality of light-receiving element packages each having one near-infrared receiver and one short-wave infrared receiver formed as a pair. Claim 4 A near-infrared and short-wave infrared band detection sensor according to claim 1, wherein the control unit controls the near-infrared light source among the near-infrared light source and the short-wave infrared light source to an ON state when the collected weather data is in a clear environment, and controls the short-wave infrared light source among the near-infrared light source and the short-wave infrared light source to an ON state when the collected weather data is in a foggy environment and the fog density value of the collected weather data is compared with a threshold value and the fog density value is greater than or equal to the threshold value compared with the fog density value, and controls the short-wave infrared light source among the near-infrared light source and the short-wave infrared light source to an ON state when the collected weather data is in a yellow dust environment. Claim 5 A near-infrared and short-wave infrared band sensing sensor according to claim 1, wherein the control unit controls either or both of the near-infrared light source and the short-wave infrared light source based on an illumination environment. Claim 6 A near-infrared and short-wave infrared band detection sensor according to claim 7, wherein the control unit controls both the near-infrared light source and the short-wave infrared light source to an ON state when the illumination environment is nighttime, and controls the near-infrared light source among the near-infrared light source and the short-wave infrared light source to an ON state when the illumination environment is daytime. Claim 7 A near-infrared and short-wave infrared band detection sensor according to claim 1, wherein the control unit compares the near-infrared signal reception strength of the near-infrared receiver and the short-wave infrared signal reception strength of the short-wave infrared receiver with a threshold value, and if the near-infrared signal reception strength value and the short-wave infrared signal reception strength value are less than or equal to the threshold value compared with the near-infrared signal reception strength value and the short-wave infrared signal reception strength value, respectively, amplifies the near-infrared signal received by the near-infrared receiver and the short-wave infrared signal received by the short-wave infrared receiver. Claim 8 A near-infrared and short-wave infrared band detection sensor according to claim 1, wherein the control unit controls the near-infrared light source to the ON state among the near-infrared light source and the short-wave infrared light source when the battery saving mode is in the ON state. Claim 9 In claim 1, a rotating bracket; an angle adjustment bracket in which the upper part is received inside the rotating bracket with the upper part pivotally coupled to the inner center of the rotating bracket, and the one side and the other side rotate in place together with the one side and the other side of the rotating bracket, respectively, with respect to the upper center, thereby adjusting the left and right angles; a reflector in which the one side center and the other side center are received inside the angle adjustment bracket with the one side center and the other side center of the inner surface of the angle adjustment bracket, respectively, and the upper and lower parts rotate in the up and down direction of the angle adjustment bracket with respect to the one side center and the other side center, respectively, thereby adjusting the up and down angles, and the one side and the other side rotate together with the one side and the other side of the angle adjustment bracket, thereby adjusting the left and right angles; and a light-emitting part or a light-receiving part provided on the front side of the reflector, and the light-emitting part or the light-receiving part is provided on the inner side so as to face the reflector, inclined in a diagonal direction, and the upper and lower parts respectively for angle adjustment of either one or both of the light-emitting part and the light-receiving part. A near-infrared and short-wave infrared band detection sensor characterized by comprising: a cover plate that rotates together with the upper and lower parts of the reflector to adjust the vertical angle, and rotates together with the one side and the other side of the reflector to adjust the horizontal angle, and transmits either one or both of the near-infrared and short-wave infrared rays of the light-emitting part; a left-right angle adjustment member that adjusts the horizontal angles of the one side and the other side of the rotating bracket, the one side and the other side of the angle adjustment bracket, the one side and the other side of the reflector, and the one side and the other side of the cover plate, and an vertical angle adjustment member that adjusts the vertical angles of the upper and lower parts of the reflector and the upper and lower parts of the cover plate. Claim 10 In claim 9, the left and right angle adjustment member comprises: a first front plate formed extending a certain length in the downward direction of the rotating bracket on the other side of the front lower surface of the rotating bracket; a first rear plate formed protruding a certain length in the inward direction of the angle adjustment bracket on the other side of the upper inner circumference of the angle adjustment bracket so as to be positioned in the rearward direction of the first front plate while facing the first front plate; and a left and right angle adjustment bolt that adjusts the left and right angles of one side and the other of the rotating bracket, one side and the other of the angle adjustment bracket, one side and the other of the reflector, and one side and the other of the cover plate, wherein the front and rear sides are respectively fastened to the first front plate and the first rear plate while penetrating the first front plate and the first rear plate, and the upper and lower angle adjustment member is formed in the inward direction of the angle adjustment bracket on the upper front side of the angle adjustment bracket A near-infrared and short-wave infrared band detection sensor characterized by comprising: a second front plate formed to protrude by a certain length; a second rear plate formed to protrude by a certain length in the upward direction of the reflector on one side of the upper portion of the reflector so as to be positioned in the rear direction of the second front plate while facing the second front plate; and an up-and-down angle adjustment bolt that is fastened to the front and rear portions of the second front plate and the second rear plate, respectively, while penetrating the second front plate and the second rear plate, thereby adjusting the up-and-down angles of the upper and lower portions of the reflector and the upper and lower portions of the cover plate.

Images