WO2020067598A1 - Optical sensing device for noise reduction and explosives-detection system comprising same - Google Patents

Abstract

An optical sensing device comprises a light source supply module, a mounting portion, a light source measurement module, a light source controlling and signal processing module, first, second and third constant voltage supply modules and first and second batteries. The light source supply module irradiates first light in response to a light source control signal. The mounting portion comprises a light-emitting material which emits second light in response to the first light. The light source measurement module generates an optical sensing signal in response to the second light. The light source controlling and signal processing module generates a light source control signal and generates a detection signal for detecting whether or not explosive particles are present in the air, in response to the optical sensing signal. The first constant voltage supply module supplies a first driving voltage to the light source supply module in response to a first power supply voltage. The second constant voltage supply module supplies a second driving voltage to the light source measurement module in response to the first power supply voltage. The third constant voltage supply module supplies a third driving voltage to the light source controlling and signal processing module in response to a second power supply voltage. The first battery supplies the first power supply voltage. The second battery supplies the second power supply voltage and is completely electrically separated from the first battery.

Description

Optical sensing device for noise reduction and explosives detection system including the same

The present invention relates to explosives detection, and more particularly, to an optical sensing device for detecting explosives and an explosives detection system including the optical sensing device.

Typical compounds used as explosives include nitro aromatic chemicals such as trinitrotoluene (TNT) or dinitrotoluene (DNT), and various methods for detecting such chemicals have been developed. have. Methods for detecting chemicals contained in explosives using ion mobility spectroscopy or neutron detectors have been researched and developed, but there are disadvantages in that detection time is relatively long and expensive, compared to biosensors. . Recently, many sensors using nanoparticles absorbing or changing fluorescence have been developed. This can be easily implemented as a measuring device, and the reaction time is short, so it is highly applicable as a real-time explosive sensor.

On the other hand, looking at the synthesis process of TNT or the decomposition process of TNT, it can be seen that DNT is also present in some explosives. Therefore, TNT and DNT are representative chemicals present in explosives, and the explosive detection device (sensor) mainly functions to detect these two substances. However, since TNT and DNT exist as a solid and the vapor pressure is very low, the development of a receptor with a high sensitivity and selectivity and a stable structure in the gas phase is required to detect TNT and DNT present in the air while being vaporized in a solid explosive state. It can be the core of explosive detection sensor development.

Recently, studies on receptors capable of selectively binding to TNT and DNT with high sensitivity have been conducted steadily, whereas detection devices capable of effectively utilizing them are still incomplete.

One object of the present invention is to provide an optical sensing device capable of improving explosive detection performance by reducing electrical noise.

Another object of the present invention is to provide an explosives detection system that can improve explosives detection performance by including the optical sensing device.

In order to achieve the above object, the optical sensing device according to embodiments of the present invention includes a light source supply module, a seating unit, a light source measurement module, a light source control and signal processing module, a first constant voltage supply module, a second constant voltage supply module, It includes a third constant voltage supply module, a first battery and a second battery. The light source supply module irradiates the first light in response to the light source control signal and controls the intensity of the first light. The seating portion includes a light emitting material that emits second light in response to the first light. The light source measurement module receives the second light and generates a light sensing signal in response to the second light. The light source control and signal processing module generates the light source control signal to control the operation of the light source supply module, and generates a detection signal to detect whether explosive particles are present in the air in response to the light sensing signal. The first constant voltage supply module supplies a first driving voltage to the light source supply module in response to the first power voltage. The second constant voltage supply module supplies a second driving voltage to the light source measurement module in response to the first power voltage. The third constant voltage supply module supplies a third driving voltage to the light source control and signal processing module in response to a second power voltage different from the first power voltage. The first battery supplies the first power voltage to the first constant voltage supply module and the second constant voltage supply module. The second battery supplies the second power voltage to the third constant voltage supply module, and is completely electrically separated from the first battery.

In one embodiment, the optical sensing device may further include a first digital insulation module and a second digital insulation module. The first digital insulation module is disposed between the light source supply module and the light source control and signal processing module, a first circuit electrically connected to the light source control and signal processing module to receive the light source control signal electrically, and It may include a second circuit electrically connected to the light source supply module and providing a first control signal corresponding to the light source control signal to the light source supply module and electrically insulated from the first circuit. The second digital insulation module is disposed between the light source measurement module and the light source control and signal processing module, a third circuit electrically connected to the light source measurement module to electrically receive the light sensing signal, and the light source control And a fourth circuit electrically connected to the signal processing module and providing a first sensing signal corresponding to the light sensing signal to the light source control and signal processing module and electrically insulated from the third circuit. .

In one embodiment, the first circuit of the first digital insulation module operates in response to the third driving voltage generated from the third constant voltage supply module, and the second circuit of the first digital insulation module is the It may operate in response to the first driving voltage generated from the first constant voltage supply module.

In one embodiment, the first ground connected to the first circuit of the first digital insulation module and the second ground connected to the second circuit of the first digital insulation module may be completely electrically separated.

In one embodiment, the third circuit of the second digital insulation module operates in response to the second driving voltage generated from the second constant voltage supply module, and the fourth circuit of the second digital insulation module is the It may operate in response to the third driving voltage generated from the third constant voltage supply module.

In one embodiment, a third ground connected to the third circuit of the second digital insulation module and a fourth ground connected to the fourth circuit of the second digital insulation module may be completely electrically separated.

In one embodiment, the first constant voltage supply module and the second constant voltage supply module are linear regulators, and the third constant voltage supply module may be a nonlinear regulator or a nonlinear regulator.

To achieve the other object, the explosives detection system according to embodiments of the present invention includes a suction nozzle, a discharge nozzle, a light sensing device, a first guide tube, a suction force generator, a second guide tube and a controller. The suction nozzle is formed with an inlet through which air containing explosive particles is introduced at one end. The discharge nozzle is formed with an outlet through which the air is discharged at one end. The light sensing device detects the explosive particles in the air using light and generates a detection signal. The first guide tube is connected to the other end of the suction nozzle, and guides the air flowing through the suction nozzle to the optical sensing device. The suction force generating unit is formed at the other end of the discharge nozzle and is connected to the discharge nozzle, and provides suction power for sucking air in the light sensing device and discharging it to the discharge port while allowing the air to be sucked through the suction port. The second guide tube is formed between the light sensing device and the suction force generator to discharge air introduced into the light sensing device by the suction force generated by the suction force generator to the outlet of the discharge nozzle. The controller determines whether the explosive particles are present in the air using the detection signal. The light sensing device includes a light source supply module, a seating unit, a light source measurement module, a light source control and signal processing module, a first constant voltage supply module, a second constant voltage supply module, a third constant voltage supply module, a first battery and a second battery do. The light source supply module irradiates the first light in response to the light source control signal and controls the intensity of the first light. The seating portion includes a light emitting material that emits second light in response to the first light. The light source measurement module receives the second light and generates a light sensing signal in response to the second light. The light source control and signal processing module generates the light source control signal to control the operation of the light source supply module, and generates the detection signal in response to the light sensing signal. The first constant voltage supply module supplies a first driving voltage to the light source supply module in response to the first power voltage. The second constant voltage supply module supplies a second driving voltage to the light source measurement module in response to the first power voltage. The third constant voltage supply module supplies a third driving voltage to the light source control and signal processing module in response to a second power voltage different from the first power voltage. The first battery supplies the first power voltage to the first constant voltage supply module and the second constant voltage supply module. The second battery supplies the second power voltage to the third constant voltage supply module, and is completely electrically separated from the first battery.

In the light sensing device and the explosives detection system including the same according to the embodiments of the present invention as described above, by using a light emitting material that changes at least one of the intensity and wavelength of the light emitted when the explosive particles are seated, explosive particles Can be effectively detected.

In addition, the first battery for supplying power to the light source supply module and the light source measurement module and the second battery for supplying power to the light source control and signal processing module are separately configured, together with the light source supply module and the light source measurement module and the light source control and By configuring the signal processing module to be completely electrically isolated / independent, it is possible to secure the power supply stability of the light source supply module and the light source measurement module and reduce noise to improve the detection accuracy of explosive particles.

1 is a block diagram illustrating an explosives detection system according to embodiments of the present invention.

2 is a block diagram illustrating an optical sensing device according to embodiments of the present invention.

3 and 4 are block diagrams showing examples of first and second digital isolation modules included in the optical sensing device according to the embodiments of the present invention.

5 to 9 are circuit diagrams showing an example of concretely implementing an optical sensing device according to embodiments of the present invention.

With respect to the embodiments of the present invention disclosed in the text, specific structural or functional descriptions are exemplified only for the purpose of illustrating the embodiments of the present invention, and the embodiments of the present invention can be implemented in various forms and the text It should not be construed as being limited to the embodiments described in.

The present invention can be variously changed and may have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosure form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from other components. For example, the first component may be referred to as the second component without departing from the scope of the present invention, and similarly, the second component may also be referred to as the first component.

When an element is said to be "connected" or "connected" to another component, it is understood that other components may be directly connected to or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is said to be "directly connected" or "directly connected" to another component, it should be understood that no other component exists in the middle. Other expressions describing the relationship between the components, such as "between" and "immediately between" or "adjacent to" and "directly neighboring to," should be interpreted similarly.

The terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "include" or "have" are intended to indicate that a feature, number, step, action, component, part, or combination thereof described is present, and one or more other features or numbers. It should be understood that it does not preclude the presence or addition possibilities of, steps, actions, components, parts or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. .

On the other hand, when an embodiment can be implemented differently, functions or operations specified in a specific block may occur differently from the order specified in the flowchart. For example, two consecutive blocks may actually be executed substantially simultaneously, or the blocks may be performed upside down depending on the related function or operation.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted.

1 is a block diagram illustrating an explosives detection system according to embodiments of the present invention.

Referring to FIG. 1, the explosive detection system includes a suction nozzle 100, a first guide tube 106, a second guide tube 110, a suction force generating unit 114, a discharge nozzle 116, a controller 130 and It includes a light sensing device 200. The explosives detection system includes a speed sensor 102, a temperature and humidity sensor 104, a connecting nozzle 112, a first connecting tube 118, a second connecting tube 120, a first light blocking unit 150, and A second light blocking unit 160 may be further included.

The suction nozzle 100 is formed with an inlet 10 through which air containing explosive particles flows at one end. The first guide tube 106 may be connected to the other end of the suction nozzle 100.

The discharge nozzle 116 has an outlet 20 through which the air is discharged at one end. A suction force generating unit 114 may be connected to the other end of the discharge nozzle 116.

The suction nozzle 100 sucks the air by the suction force generated by the suction force generator 114 installed on the discharge nozzle 116. For example, a fan can be used to generate the suction force. The air sucked in this way may be discharged to the first guide tube 106 connected to the other end of the suction nozzle 100.

The first guide tube 106 has one end connected to the suction nozzle 100 and the other end connected to one side of the first connector 118 connected to the light sensing device 200 of the sensor unit 108. .

In one embodiment, the diameter of the other end of the first guide tube 106 may be formed smaller than the diameter of one end. The air introduced through this may be accelerated through the first guide tube 106 to be introduced into the optical sensing device 200 through the first connection tube 118.

In one embodiment, the first guide tube 106 may be arranged in a zigzag shape to have a width greater than the height of the light sensing device 200 to be connected to the first connector 118. Through the structure of the first guide tube 106, light introduced from the outside by the first guide tube 106 may be blocked from entering the optical sensing device 200.

The first light blocking unit 150 may be disposed between the suction nozzle 100 and the light sensing device 200 and block light flowing from the outside. For example, the first guide tube 106 is formed through the first light blocking portion 150 and may have a zigzag shape. The first guide tube 106 having a zigzag shape can not only prevent the air introduced into the light sensing device 200 from exiting toward the suction nozzle 100, but also the air introduced into the first guide tube 106. It can be compressed to remove moisture in the air.

The light sensing device 200 detects the explosive particles in the air using light and generates a detection signal. One side of the optical sensing device 200 may be connected to the first connector 118, and the other side may be connected to the second connector 120. The detailed structure and operation of the optical sensing device 200 will be described later in detail with reference to FIG. 2 and the like.

One side of the second connector 120 may be connected to the light sensing device 200, and the other side may be connected to the second guide tube 110.

The second guide tube 110 may have one side connected to the second connection pipe 120 and the other side connected to the end of the connection nozzle 112 connected to the suction force generating unit 114.

Through this structure, the air introduced into the optical sensing device 200 by the suction force generated by the suction force generator 114 is connected to the nozzle 112 through the second connector 120 and the second guide tube 110 ), And the air guided by the connecting nozzle 112 may be discharged to the outside through the outlet 20 formed at the end of the discharge nozzle 116.

In one embodiment, a diameter of a portion of the second guide tube 110, that is, a portion connected to the second connection pipe 120 may be formed smaller than a diameter of a portion connected to the other side, that is, a connection nozzle 112. . Accordingly, the air flowing into the optical sensing device 200 may be discharged through the outlet 20 due to a slow flow rate.

In one embodiment, the second guide tube 110 may be arranged in a zigzag shape to have a width greater than the height of the light sensing device 200 to be connected to the second connector 120. Through the structure of the second guide tube 110, light flowing from the outside by the second guide tube 110 may be prevented from entering the light sensing device 200.

The second light blocking unit 160 may be disposed between the light sensing device 200 and the suction force generating unit 114, and block external light flowing through the suction force generating unit 114 and the outlet 20. In this case, the second guide tube 110 is formed through the second light blocking portion 160 and may have a zigzag shape.

The suction force generator 114 may operate under the control of the controller 130 to generate the suction force to allow the air to be sucked through the suction port 10. For example, the suction force generating unit 114 may include a fan.

A speed sensor 102 for measuring the speed of the air and a temperature and humidity sensor 104 for measuring the temperature and humidity of the air may be installed on the suction nozzle 100. The speed measurement signal sensed by the speed sensor 102 and the temperature and humidity measurement signal sensed by the temperature and humidity sensor 104 may be input to the controller 130.

The controller 130 determines whether the explosive particles are present in the air using the detection signal generated by the light sensing device 200. The controller 130 is a central processing unit for controlling the overall function of the explosives detection system, and may control the operating states of the light sensing device 200 and the suction force generating unit 114. The details are as follows.

First, the controller 130 may control the suction force of the air flowing through the suction force generating unit 114 and the suction port 10 based on the signal measured from the speed sensor 102. Specifically, the controller 130 obtains the flow rate information of the air flowing through the intake port 10 based on the speed measurement signal sensed by the speed sensor 102, and then the obtained flow rate is a preset threshold value In the following case, the suction force generated by the suction force generator 114 may be increased. For example, when the suction force generating unit 114 includes a fan, the suction force may be increased by increasing the operation speed of the fan.

In addition, the controller 130 obtains the humidity information in the air based on the temperature and humidity measurement signal sensed by the temperature and humidity sensor 104, and based on the acquired humidity information, the suction power generation unit 114 It is possible to control the suction force generated by. Specifically, when the humidity of the air flowing into the suction nozzle 100 through the suction port 10 is greater than or equal to a predetermined threshold, the controller 130 controls the suction force generating unit 114 to lower the flow rate of the air. You can. For example, when the suction force generator 114 includes a fan, the suction force may be reduced by reducing the operation speed of the fan.

On the other hand, although not shown, the explosives detection system may further include a power supply for supplying power to the suction power generating unit 114, the controller 130, the optical sensing device 200, and the like. For example, batteries included in the optical sensing device 200 (eg, 280 and 290 of FIG. 2) may correspond to the power supply unit.

The process of operating the explosives detection system according to the embodiments of the present invention described above is as follows.

First, the controller 130 may control the suction force generating unit 114 to generate a predetermined suction force.

The suction force generated accordingly is the connection nozzle 112, the second guide tube 110, the second connector 120, the light sensing device 200, the first connector 118 and the first guide tube 106 It is provided to the suction nozzle 100 through, and the suction nozzle 100 inhales air containing explosive particles through the suction port 10 according to the suction force and flows into the first guide tube 106.

The first guide pipe 106 provides the introduced air to the first connecting pipe 118, wherein the air introduced through the suction nozzle 100 due to the zigzag shape may be compressed to some extent. Through this compression, the air introduced into the first guide tube 106 is removed to some extent, and then the flow rate is increased by the outlet having a smaller diameter than the inlet of the first guide tube 106, so that the first connecting tube 118 Through it may be discharged to the optical sensing device 200.

The air introduced into the light sensing device 200 will stay to some extent by the shape of the second guide tube 110. Specifically, the zigzag shape of the second guide tube 110 and the flow rate of air flowing into the second guide tube 110 is reduced by the inlet of the narrowed second guide tube 110, so that the light sensing device 200 The air introduced in the air is slowly introduced into the connection nozzle 112 through the second guide tube 110 connected to the second connection tube 120 after staying for a certain period of time, and then the discharge port 20 of the discharge nozzle 116 It can be discharged through.

On the other hand, explosive particles in the air introduced into the light sensing device 200 are detected by the light sensing device 200, which will be described later.

2 is a block diagram illustrating an optical sensing device according to embodiments of the present invention.

2, the light sensing device 200 includes a light source supply module 210, a seating unit 220, a light source measurement module 230, a light source control and signal processing module 240, a first constant voltage supply module 250 ), A second constant voltage supply module 260, a third constant voltage supply module 270, a first battery 280 and a second battery 290. The optical sensing device 200 may further include a third connector 201, a first digital insulation module 310 and a second digital insulation module 320.

The third connector 201 may connect the first connector 118 and the second connector 120. The air introduced into the optical sensing device 200 through the first connector 118 may be discharged through the second connector 120 after staying in the third connector 201 for a certain time.

In one embodiment, as shown in Figure 2, the diameter of the third connector 201 may be formed to be smaller than the diameter of the first connector 118 and the second connector 120. In other embodiments, although not illustrated, the diameters of the third connection pipe 201 may be larger than the diameters of the first connection pipe 118 and the second connection pipe 120.

The light source supply module 210 irradiates the first light LS1 in response to the light source control signal CS (eg, in response to the first control signal CS 'corresponding to the light source control signal CS). And controls the intensity of the first light LS1. For example, the light source supply module 210 may include a light source that generates the first light LS1, such as a light emitting diode. For example, the first light LS1 may be ultraviolet light.

The seating unit 220 includes a light emitting material that emits the second light LS2 in response to the first light LS1. The seating portion 220 may be disposed in the third connector 201. For example, the seating portion 220 is made of a material for detection that can be combined with explosives particles, for example, nitro aromatic explosives (particles), to cause fluorescence changes, for example, luminescence and extinction state changes (Quartz). It may include.

In one embodiment, the luminescent material or the substance for detection maintains a fluorescence (light emission) state by the first light LS1 and then changes from the light emission state to the extinction state by the first light LS1 as the explosive particles are settled. Can be changed. In other words, when the luminescent material reacts with the explosive particles, the intensity of the second light LS2 may be changed (eg, reduced).

In another embodiment, the luminescent material or detection material emits light of a first wavelength by the first light LS1 and then differs from the first wavelength by the first light LS1 as the explosive particles are settled. It can emit light of a second wavelength. In other words, when the luminescent material reacts with the explosive particles, the wavelength of the second light LS2 may be changed.

In one embodiment, the luminescent material or detection material is 1,1-disubstituted 4,5,8,9-bis (trypsin, represented by [Formula 1] below) that can react with nitro aromatic explosive particles ) It may include an organic semiconductor compound made of a metal lafloorene compound.

[Formula 1]

In the above [Formula 1], M is Si or Ge, R1 and R2 are H, C1 ~ C18 alkyl group, C2 ~ C18 alkenyl group, C2 ~ C18 alkynyl group, C5 ~ C14 substituted or aromatic ring C3 ~ C10 containing a compound, a hetero atom (-NH-, -S-, -O-) or an aromatic cyclic compound or a halogen atom, the substituents of R1 and R2 are each the same or not the same You can.

In one embodiment, a predetermined adhesive coating material may be coated on the upper portion of the seating portion 220 so that explosive particles in the air flowing in the third connector 201 can be easily adhered.

Although only one seating portion 220 is illustrated in FIG. 2, according to an embodiment, the light sensing device 200 may include two or more seating portions, and in particular, have different lengths (eg, sequentially in height). May be lowered).

The light source measurement module 230 receives the second light LS2 and generates a light sensing signal SS in response to the second light LS2. For example, the light source measurement module 230 may include a light receiving unit that receives the second light LS2, such as a photodiode.

The light source control and signal processing module 240 generates the light source control signal CS to control the operation of the light source supply module 210 and responds to the light sensing signal SS (eg, the light sensing signal SS ) In response to a first sensing signal (SS ') corresponding to) generates a detection signal DS that detects the presence of explosive particles in the air. Depending on the embodiment, the light source control and signal processing module 240 and the controller 130 may be implemented by integrating them into a single module, and the light source control and signal processing module 240 and the controller 130 are two separate modules. It may be implemented as.

The first constant voltage supply module 250 supplies the first driving voltage VD1 to the light source supply module 210 in response to the first power voltage PWR1. The second constant voltage supply module 260 supplies the second driving voltage VD2 to the light source measurement module 230 in response to the first power voltage PWR1. The third constant voltage supply module 270 supplies the third driving voltage VD3 to the light source control and signal processing module 240 in response to the second power voltage PWR2 different from the first power voltage PWR1.

In one embodiment, the first constant voltage supply module 250 and the second constant voltage supply module 260 may each be linear regulators. By configuring each linear regulator with very little current and no self-oscillation, stable power can be supplied to the light source supply module 210 and the light source measurement module 230.

In one embodiment, the third constant voltage supply module 270 may be a nonlinear or switching regulator.

The first battery 280 supplies the first power voltage PWR1 to the first constant voltage supply module 250 and the second constant voltage supply module 260. The second battery 290 supplies the second power voltage PWR2 to the third constant voltage supply module 270. Since the first battery 280 and the second battery 290 are completely electrically separated and driven independently, noise can be effectively reduced.

Although not illustrated, the light sensing device 200 may further include a shutter for blocking the incidence of light, and a shutter sensor for sensing the operating state of the shutter.

The optical sensing device 200 according to embodiments of the present invention sucks air and identifies explosive particles in the air using the energy of the light source and a very fine photodiode current signal, so that electrical noise detects explosive particles Has a great effect on Accordingly, power stability of the light source supply module 210 and the light source measurement module 230 is very important, and separate constant voltage supply modules 250 and 260 are provided for each of the light source supply module 210 and the light source measurement module 230. Constructed and electrically isolated / independently used, one battery 280 is used.

The light source control and signal processing module 240 controls ON / OFF and intensity of the light source in the light source supply module 210, and collects signals that electronically amplify changes in light sensed by the light source measurement module 230, Various information necessary for the detection environment, such as a temperature and humidity sensor, is sensed. In addition, the light source control and signal processing module 240 processes the collected various information into a digital signal and transmits it to the controller 130 for analysis based on an explosive recognition algorithm. The light source control and signal processing module 240 performing such a function includes various circuits for high frequency signal processing, and has a more fluctuating power state than the light source supply module 210 and the light source measurement module 230. , A separate constant voltage supply module 270 is configured for the light source control and signal processing module 240, and the second battery 290 completely separated / independently electrically from the first battery 280 is used.

Meanwhile, the second battery 290 may supply power for driving the controller 130 and the suction force generator 114, and although not shown, various configurations that may be included in the explosives detection system according to embodiments of the present invention Elements, for example, GPS for obtaining location information, communication module for accessing a WIFI network, various types of operating systems (e.g., Android, etc.) and memory and processor for storing and driving applications, explosives detection system The display for displaying status information, detection result information, control information, etc., the main board, a camera for shooting external images, a distance sensor, an antenna for receiving an RFID key for recognizing a specific RFID, and an explosives detection system. A status check unit capable of controlling a plurality of LED elements and buttons for displaying a status, and a fan control for controlling the operation of the fan It is possible to supply power for driving the unit.

The process of detecting the explosive particles by the light sensing device 200 according to the above-described embodiments of the present invention will be described below.

First, in a state in which air does not flow into the light sensing device 200 or in a state in which air containing no explosive particles enters the light sensing device 200, the seating unit 220 responds to the first light LS1 To emit the second light LS2.

In this case, the light source measurement module 230 receives the second light LS2 according to the light emission of the seating unit 220 and then generates a light sensing signal SS corresponding to the light source control and signal processing module 240 ) Generates and outputs a detection signal DS indicating that no explosive particles are present in response to the light sensing signal SS.

Then, when the air containing the explosive particles flows into the light sensing device 200, the explosive particles are seated on a predetermined portion of the seating portion 220. Accordingly, at least one of the intensity and wavelength of the second light LS2 emitted from the seating portion 220 is changed by the first light LS1.

The light source measurement module 230 receives the second light LS2 in which at least one of the intensity and wavelength is changed, and then generates a light sensing signal SS corresponding thereto, and the light source control and signal processing module 240 has light sensing In response to the signal SS, a detection signal DS indicating that an explosive particle is present is generated and output.

In one embodiment, the light source supply module 210 and the light source measurement module 230 and the light source control and signal processing module 240 are electrically based on the first digital insulation module 310 and the second digital insulation module 320. Can be separated more completely.

The first digital insulation module 310 is disposed between the light source supply module 210 and the light source control and signal processing module 240, and receives the light source control signal CS and corresponds to the first control signal CS ' Can output The second digital insulation module 320 is disposed between the light source measurement module 230 and the light source control and signal processing module 240, and receives the light sensing signal SS and corresponds to the first sensing signal SS ' Can output

The first digital isolation module 310 and the second digital isolation module 320 ensure signal transmission and reception, but may be implemented based on digital isolation technology designed by separating line connections and separating power grounds. It will be described later with reference to FIGS. 3 and 4.

3 and 4 are block diagrams showing examples of first and second digital isolation modules included in the optical sensing device according to the embodiments of the present invention.

2 and 3, the first digital isolation module 310 may include a first circuit 312 and a second circuit 314.

The first circuit 312 is electrically connected to the light source control and signal processing module 240 to electrically receive the light source control signal CS. The first circuit 312 may operate in response to the third driving voltage VD3 generated from the third constant voltage supply module 270.

The second circuit 314 may be electrically connected to the light source supply module 210 and electrically provide the first control signal CS 'corresponding to the light source control signal CS to the light source supply module 210. The second circuit 314 may operate in response to the first driving voltage VD1 generated from the first constant voltage supply module 250.

In one embodiment, the first circuit 312 and the second circuit 314 may be completely electrically isolated and isolated. Specifically, the first ground GD1 connected to the first circuit 312 and the second ground GD2 connected to the second circuit 314 may be completely electrically separated. Further, the output pad 312a included in the first circuit 312 and outputs a signal corresponding to the light source control signal CS and the second control circuit 314 and output pad 312a corresponding to the first control signal CS ' Signal transmission between the input pads 314a for receiving signals is not an electrical signal transmission, and may be implemented in any way to implement electrical separation while ensuring transmission and reception of signals, such as optical transmission and ultrasonic transmission.

2 and 4, the second digital isolation module 320 may include a third circuit 322 and a fourth circuit 324. The second digital isolation module 320 may have a structure substantially the same as the first digital isolation module 310.

The third circuit 322 may be electrically connected to the light source measurement module 230 to electrically receive the light sensing signal SS. The third circuit 322 may operate in response to the second driving voltage VD2 generated from the second constant voltage supply module 260.

The fourth circuit 324 is electrically connected to the light source control and signal processing module 240, and the first sensing signal SS 'corresponding to the light sensing signal SS is electrically connected to the light source control and signal processing module 240. Can be provided. The fourth circuit 324 may operate in response to the third driving voltage VD3 generated from the third constant voltage supply module 270.

In one embodiment, the third circuit 322 and the fourth circuit 324 may be completely electrically isolated and isolated. Specifically, the third ground GD3 connected to the third circuit 322 and the fourth ground GD4 connected to the fourth circuit 324 may be completely electrically separated. The third ground GD3 may be the same as or different from the second ground GD2 of FIG. 3. The fourth ground GD4 may be the same as the first ground GD1 of FIG. 3. Also, an output pad 322a included in the third circuit 312 and outputting a signal corresponding to the light sensing signal SS and a fourth circuit 324 and corresponding to the first sensing signal SS ' Signal transmission between the input pads 324a for receiving signals is not an electrical signal transmission, and may be implemented in any way to implement electrical separation while ensuring transmission and reception of signals, such as optical transmission and ultrasonic transmission.

As described above, the light source supply module 210 and the light source control and signal processing module 240 are completely electronically separated by the first digital insulation module 310, and the light source measurement module is determined by the second digital insulation module 320. By separating the 230 and the light source control and signal processing module 240 completely electronically and designing based on digital insulation technology so as not to affect the power line, signal line, and ground, electrical noise that is essentially generated in digital signal processing It can be designed so that it does not affect the measurement of changes in the amount of microscopic light, that is, it excludes electrical interference.

5 to 9 are circuit diagrams showing an example of concretely implementing an optical sensing device according to embodiments of the present invention.

Referring to FIG. 5, an example of the second constant voltage supply module 260 of FIG. 2 is illustrated. Some of the components of Figure 5 (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, Q1, L1, DP1, D1, D2, R1, R2) (C7, C8, C9, C10, C11, C12, D1, D2, R1, R2) may correspond to the second constant voltage supply module 260.

The component Q1 of FIG. 5 is a “NCP1117LPST50T3G” device including GND, VOUT, and VIN terminals, and the component DP1 includes “DUAL POWER1 including -Vin, + Vin, -Vo, Com, + Vo terminals. TSM0505D "device.

Referring to FIG. 6, an example of the light source supply module 210, the first constant voltage supply module 250, and the first digital insulation module 310 of FIG. 2 is illustrated. Components of Figure 6 (C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, Q2, L2, U1, U2, U3, R2 ', Among the Q3A, R3, R4, R5, Q4, LED), some components (C13, C14, C15, C16, C17, Q2, L2) correspond to the first constant voltage supply module 250, and some other components (C18, C19, C20, C23, C24, C25, C26, C27, U3, R2 ', Q3A, R3, R4, R5, Q4, LED) correspond to the light source supply module 210, and components (U1 , U2) may correspond to the first digital isolation module 310.

The component Q2 in FIG. 6 is a “MIC5201-5.0YS” element including IN, OUT, and GND terminals, and the components U1 and U2 are VDD1, V-IA, V-IB, GND1, and GND2, respectively. , "ADUM1200BRZ" element including V-OB, V-OA, VDD2 terminals, component U3 is "MCP4822-E" including VCC, CS, SCK, SDI, LDAC, / SHON, GND, VOUT terminals / SN "device, and the components Q3A and Q4 may be" MCP6071-E / OT "and" MMBT3904 "devices, respectively. The component LED may be a light emitting diode included in the light source supply module 210.

7A and 7B, examples of the light source measurement module 230 and the second digital isolation module 320 of FIG. 2 are illustrated. Components of FIGS. 7A and 7B (C29, C30, C31, C32, C33, C34, C35, C36, C37, C38, C39, C40, C41, C42, C43, C44, C45, C46, C47, C48, R6 , R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, PD, Q6A, Q7A, REFA, U4, U5, U6A) Some components (C29, C30, C31, C32, C33, C34, C35, C36, C37, C38, C39, C40, C41, C42, C43, C44, C45, C46, R6, R7, R8, R9, R10 , R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, PD, Q6A, Q7A, REFA, U6A) correspond to the light source measurement module 230, some other The components U4 and U5 may correspond to the second digital isolation module 320. The circuits of FIGS. 7A and 7B may be connected to each other through a node NO1.

The components Q6A and Q7A of FIG. 7A are “LTC6240HVCS5 # TRMPBF” and “LT6200CS6-5 # TRMPBF” devices, respectively, and the component REFA of FIG. 7B includes Vbias, GND, EN, VCC, and Vref terminals. Is a "REF2041AIDDCT" element, and the component U6A is a "MCP3301-BI / SN" element including Vref, IN +, IN-, GND, / CS, Dout, CLK, and VDD terminals, and the components U4, U5) may be a “ADUM1201CRZ” device including VDD1, V-OA, V-IB, GND1, GND2, V-OB, V-IA, and VDD2 terminals, respectively. The component PD may be a photodiode included in the light source measurement module 230.

Referring to FIG. 8, an example of the third constant voltage supply module 270 of FIG. 2 is illustrated. Components of Figure 8 (C52, C53, C54, C55, C56, C57, C58, C59, R51, R52, R53, R54, R55, R56, R57, R58, R59, D56, ZD51, U51, Q51, Q52 ) May correspond to the third constant voltage supply module 270.

The component ZD51 of FIG. 8 is a “MMBZ5229BLT1G” device, and the component U51 may be a “LMZ14203HTZX” device including VIN, RON, EN, GND, SS, FB, VOUT, and PAD terminals. It can operate in response to "PowerSW" and "VCC2Enable" signals.

Referring to FIG. 9, an example of the light source control and signal processing module 240 of FIG. 2 is illustrated. The components (C60, C61, C62, C63, C64, C65, C66, C67, C70, R60, R61, R62, R63, U55) of FIG. 9 may all correspond to the light source control and signal processing module 240 . The circuits of FIGS. 8 and 9 may be connected to each other through a node ND2.

The component U55 of FIG. 9 includes various signals 304MCLR, AdcMAINbat, AdcLDPDbat, STemp, SHumid, SDistance, KeySW, EnLDPDpower, EnLDPDbat, EncoINT, EncoDATA, EncoSW, LED21, LED22, LED23, PwrSW_Pushed, SCK1, SDI1, SDO1 , SS1, SCK2, SDI2, SDO2, SS2, 304PGEC1, 304PGED1, DetectSW, OFFsignal, FSPctrl, Power_RFID, SCL1_EEPROM, SDA1_EEPROM, WPC_EEPROM, FANenable) receiving terminals (VCC, / MCLR RA5, ADC0 / RA1, ADC0 / RA0, ADC1 , ADC6 / RC0, ADC10 / RB14, ADC12 / RB12, ADC14 / RA3, ADC15 / RB4, RA7 ENPoLDPD, RA4 ENADCPower, RB7 / PWM1 / INT0, RB5 Encoder Data, RB6 Encoder SW, RA11, RC1, RC2, RA1, RB11 / SCK1, RB10 / SDI1, RB13SDO1, RB15 / SS1, RC5 / SCK2, RC3 / SDI2, RC4 / SDO2, RA9 / SS2, RC6 / RX1, RC7 / TX1, RB1 / RX2, RB0 / TX2, RC9, RA8, RC8 / PWM2, RA10 / PWM3, RB8 / I2C / SCL1, RB9 / SDA1, RB3 / I2C / SCL2, RB2 / SDA2, GND, Vcap) may be "PIC24FV32KA304-I / PT" devices.

5 to 9, the voltage VCC corresponds to the first driving voltage VD1, the voltages + V1 and -V1 correspond to the second driving voltage VD2, and the voltage VCC2 is the third The driving voltage VD3 may correspond to the signals SCK1, SDO1, and SS1 corresponding to the light source control signal CS, and the signals SCK2, SDI2, and SS2 may correspond to the first sensing signal SS '. have. In addition, the grounds illustrated in FIGS. 5, 6, 7a, and 7b correspond to the ground, the second ground (GD2), and the third ground (GD3) of the first battery 280, and the grounds illustrated in FIGS. 8 and 9 are The second battery 290 may correspond to the ground, the first ground GD1, and the fourth ground GD4. The capacitance, inductance and resistance values of the passive elements can be set appropriately.

Embodiments of the present invention can be useful in explosives detection systems and various electronic devices and systems operating in conjunction therewith. For example, embodiments of the present invention include a mobile phone, a smart phone, a tablet personal computer (PC), a laptop computer, a personal digital assistant (PDA), Portable multimedia player (PMP), digital camera, portable game console, navigation device, wearable device, internet of things (IoT) device, It can be usefully used in connection with various electronic devices such as an Internet of everything (IoE) device, a virtual reality (VR) device, and an augmented reality (AR) device.

Although described above with reference to the preferred embodiment of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can.

<Description of code>

100: suction nozzle, 106: first guide tube, 110: second guide tube, 114: suction force generating unit

116: discharge nozzle, 130: controller, 200: light sensing device

210: light source supply module, 220: seating portion, 230: light source measurement module,

240: light source control and signal processing module, 250: the first constant voltage supply module,

260: second constant voltage supply module, 270: third constant voltage supply module,

280: first battery, 290: second battery

Claims (8)

1. A light source supply module that irradiates a first light in response to a light source control signal and controls the intensity of the first light;

   A seating portion including a light emitting material emitting a second light in response to the first light;

   A light source measurement module that receives the second light and generates a light sensing signal in response to the second light;

   A light source control and signal processing module that generates the light source control signal to control the operation of the light source supply module, and generates a detection signal to detect whether explosive particles are present in the air in response to the light sensing signal;

   A first constant voltage supply module supplying a first driving voltage to the light source supply module in response to a first power supply voltage;

   A second constant voltage supply module supplying a second driving voltage to the light source measurement module in response to the first power supply voltage;

   A third constant voltage supply module supplying a third driving voltage to the light source control and signal processing module in response to a second power voltage different from the first power voltage;

   A first battery supplying the first power voltage to the first constant voltage supply module and the second constant voltage supply module; And

   And a second battery that supplies the second power voltage to the third constant voltage supply module and is electrically completely separated from the first battery.
2. According to claim 1,

   A first circuit disposed between the light source supply module and the light source control and signal processing module, and electrically connected to the light source control and signal processing module to receive the light source control signal electrically, and electrically to the light source supply module A first digital isolation module comprising a second circuit connected and electrically providing a first control signal corresponding to the light source control signal to the light source supply module and electrically insulated from the first circuit; And

   A third circuit is disposed between the light source measurement module and the light source control and signal processing module, and is electrically connected to the light source measurement module to electrically receive the light sensing signal, and electrically to the light source control and signal processing module. A second digital isolation module further comprising a fourth circuit connected and electrically providing a first sensing signal corresponding to the optical sensing signal to the light source control and signal processing module and including a fourth circuit electrically isolated from the third circuit. Optical sensing device, characterized in that.
3. According to claim 2,

   The first circuit of the first digital isolation module operates in response to the third driving voltage generated from the third constant voltage supply module,

   And the second circuit of the first digital insulation module operates in response to the first driving voltage generated from the first constant voltage supply module.
4. The method of claim 3,

   And a first ground connected to the first circuit of the first digital insulation module and a second ground connected to the second circuit of the first digital insulation module.
5. According to claim 2,

   The third circuit of the second digital isolation module operates in response to the second driving voltage generated from the second constant voltage supply module,

   And the fourth circuit of the second digital isolation module operates in response to the third driving voltage generated from the third constant voltage supply module.
6. The method of claim 5,

   And a third ground connected to the third circuit of the second digital insulation module and a fourth ground connected to the fourth circuit of the second digital insulation module are completely electrically separated.
7. According to claim 1,

   The first constant voltage supply module and the second constant voltage supply module is a linear regulator, and the third constant voltage supply module is a non-linear or switching regulator.
8. A suction nozzle at one end of which a suction port through which air containing explosive particles flows is formed;

   A discharge nozzle at one end of which an outlet through which the air is discharged is formed;

   An optical sensing device that detects the explosive particles in the air using light and generates a detection signal;

   A first guide tube connected to the other end of the suction nozzle and guiding the air flowing through the suction nozzle to the optical sensing device;

   A suction force generation unit formed at the other end of the discharge nozzle to be connected to the discharge nozzle, and to provide suction power to suck air in the light sensing device and discharge it to the discharge port while allowing the air to be sucked through the suction port;

   A second guide tube formed between the light sensing device and the suction force generating part to discharge air introduced into the light sensing device by the suction force generated by the suction force generating part to an outlet of the discharge nozzle; And

   And a controller that determines whether the explosive particles are present in the air using the detection signal.

   The optical sensing device,

   A light source supply module that irradiates a first light in response to a light source control signal and controls the intensity of the first light;

   A seating portion including a light emitting material emitting a second light in response to the first light;

   A light source measurement module that receives the second light and generates a light sensing signal in response to the second light;

   A light source control and signal processing module generating the light source control signal to control the operation of the light source supply module, and generating the detection signal in response to the light sensing signal;

   A first constant voltage supply module supplying a first driving voltage to the light source supply module in response to a first power supply voltage;

   A second constant voltage supply module supplying a second driving voltage to the light source measurement module in response to the first power supply voltage;

   A third constant voltage supply module supplying a third driving voltage to the light source control and signal processing module in response to a second power voltage different from the first power voltage;

   A first battery supplying the first power voltage to the first constant voltage supply module and the second constant voltage supply module; And

   An explosives detection system including a second battery that supplies the second power voltage to the third constant voltage supply module and is electrically completely separated from the first battery.

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