KR20190034055A - Mobile terminal and operation method of the same - Google Patents

Abstract

Disclosed are a mobile terminal and an operating method thereof. According to an embodiment of the present invention, the mobile terminal comprises: a display unit having a front window; a terminal body having an inner frame having a hole configured to allow light to pass through the front window; and a dust sensor including a light emitting portion emitting the light through the hole, and a light receiving portion, wherein the emitted laser light is irradiated by a dust particle in the air to detect scattering light entering through the hole to generate a signal.

Description

[0001] MOBILE TERMINAL AND OPERATION METHOD OF THE SAME [0002]

The present invention relates to a mobile terminal having a dust sensor and a control method thereof.

A mobile terminal can be divided into a mobile terminal and a stationary terminal according to whether the terminal can be moved or not. In addition, the mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal depending on whether the user can directly carry the mobile terminal.

The terminal has various functions according to the development of the technology. The terminal may be implemented in the form of a multimedia player having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game, broadcasting, etc. In order to increase the function of the terminal, It may be considered to improve the part and / or the software part.

2. Description of the Related Art [0002] Recently, various functions related to providing information to a user by using information about the state of a surrounding environment have been developed and studied as functions of a mobile terminal have diversified. Particularly, interest in air pollution such as fine dust increases rapidly, and there is a need of the user to grasp the present air quality state and utilize it variously. However, if a sensor for meeting such needs is additionally mounted inside the terminal, it may interfere with the bezel design trend of recent terminals and the implementation of a thin product.

Accordingly, it is an object of the present invention to provide a mobile terminal capable of detecting a concentration of dust in the air by installing a miniaturized sensor having a structure suitable for a bezelless design trend of a terminal without requiring an additional internal storage space, Method.

Another object of the present invention is to provide a mobile terminal capable of adjusting a dust detection period according to a detected dust concentration and an operation mode of a terminal without adding hardware, and an operation method thereof.

It is another object of the present invention to provide a mobile terminal capable of performing functions of other sensors without collision using a single miniaturized sensor mounted and variously utilizing the detected dust concentration, and an operation method thereof .

To this end, a mobile terminal according to an exemplary embodiment of the present invention includes a display unit having a front window; A terminal body on which the display unit is mounted, the terminal body having an inner frame on which holes are formed to allow light to pass through the front window; A light emitting unit disposed adjacent to the inner frame and emitting light through the hole and a light receiving unit irradiating dust particles in the air with the emitted laser light to generate a signal by sensing scattered light entering through the hole And a dust sensor.

Further, in one embodiment, the mobile terminal further includes a control unit for controlling a blinking period of the light emitting unit and detecting dust using the generated signal, and the control unit may control the blinking period of the light emitting unit Wherein the size, number, and movement speed of the dust are determined using the width, number, and time difference of the pulse output signal. .

Further, in one embodiment, the dust sensor is embedded in the cover window and a position corresponding to the hole formed at the upper end of the inner frame, and the light passing through the hole and the cover window from the light emitting portion is emitted in a straight line .

According to an embodiment of the present invention, the control unit changes the blinking period of the light emitting unit according to the size, the number, and the moving speed of the dust, and detects dust with a detection cycle corresponding to the changed blinking cycle.

Also, in one embodiment, the control unit senses the entry of a predetermined operation mode while sensing the dust through the dust sensor, and controls to detect whether the object is close to the object through the dust sensor in the predetermined operation mode .

Further, in one embodiment, the control unit calculates the moving speed of the dust passing through the dust detecting section matched with the hole in the structure using the signal generated in real time, and calculates the moving speed of the dust The detection time is variably applied to detect dust within the extended reference range.

Also, in one embodiment, the control unit controls the flashing period of the light emitting unit to be slower as the dust detecting time matching the calculated dust moving speed becomes longer.

In one embodiment, the control unit is configured to determine a dust concentration level corresponding to the detected dust, and to change the dust detection time such that the extended reference range varies according to the determined dust concentration level .

Further, in one embodiment, the control unit increases the dust detection time such that the extended reference range increases as the determined dust concentration level increases.

According to an embodiment of the present invention, the control unit controls to perform a second operation of sensing proximity of an object through the dust sensor in response to a detection state of dust exceeding a critical size.

Further, in one embodiment, the control unit may include a first operation for stopping the second operation and detecting dust through the dust sensor in response to the detection state being no longer detected or a preset time has elapsed To be performed.

Further, in one embodiment, the terminal body further includes an illuminance sensor for sensing a low-illuminance state, and in response to the detection of a low illuminance state below a threshold value during the detection of dust through the dust sensor, And the operation mode is switched to an operation mode for detecting proximity of an object through the dust sensor.

According to an embodiment of the present invention, the terminal body includes a wireless communication unit that transmits a wireless signal, and the controller displays dust information corresponding to the detected dust on the display unit, And transmits a signal corresponding to the displayed dust information to the external terminal through the wireless communication unit.

Also, in one embodiment, the wireless communication unit includes a position information module for detecting position information of the main body of the mobile terminal, and the controller detects an entry into a designated place by using the detected position information, And transmits dust information corresponding to the dust detected through the dust sensor to an external terminal matching the designated contact upon entry.

Also, in one embodiment, a map screen displaying first dust information corresponding to dust detected through the dust sensor is displayed on the display unit, and the control unit may display a second dust The display unit controls the display unit to display information on a corresponding position of the map screen, and when the second dust information is selected, the sharing history of the second dust information received from the corresponding position is output to the display unit.

Also, in one embodiment, a graphic object representing a dust concentration level corresponding to the first and second dust information is displayed on the map screen, and the graphic object is changed in real time as the dust concentration level is updated .

Also, in one embodiment, an indicator that continuously displays time information is output to one area of the display unit, and an image indicating dust concentration level of dust detected in real time through the dust sensor is further displayed on the indicator do.

Also, in one embodiment, the control unit compares the dust concentration level of the dust detected during the selected section with a predetermined reference value, and uses the log data collected in the corresponding interval to transmit the environmental analysis data according to the comparison to the display unit And outputs the output signal.

As described above, according to the mobile terminal and its operation method according to the embodiment of the present invention, by mounting the miniaturized dust sensor which does not need to provide a chamber for introducing air or a path for controlling light path, A thin thickness can be maintained. Further, according to the straight structure of the mounted dust sensor, the hole size exposed to the outside can be considerably reduced, and a bezelless design can be realized.

 In addition, according to the mobile terminal and the operation method thereof according to the embodiment of the present invention, even if the actual dust detection area is narrowed according to the reduction of the hole size of the dust sensor, By adjusting the detection time and the detection period, it is possible to change the dust detection area of the dust sensor without adding or changing the hardware configuration.

Further, according to the mobile terminal and the operation method thereof, the function of the proximity sensor can be replaced without collision through the dust sensor, and the detected dust information is shared with the third party and updated in real time, The air quality of the searched place can be confirmed quickly and intuitively.

1A is a block diagram illustrating a mobile terminal according to the present invention.
FIGS. 1B and 1C are conceptual diagrams illustrating an example of a mobile terminal according to the present invention in different directions.
2A and 2B are illustrations for explaining a structure of a dust sensor included in a mobile terminal according to the present invention.
FIGS. 3A, 3B and 3C are explanatory diagrams for explaining another structure example of the dust sensor provided in the mobile terminal according to the present invention. FIG.
4 is a conceptual diagram illustrating a software implementation operation for extending a dust detection interval according to the structure of a dust sensor provided in a mobile terminal according to the present invention.
5A and 5B are views for explaining a method of detecting the size and the number of dust particles in a mobile terminal according to the present invention.
FIGS. 6A, 6B, and 6C are conceptual diagrams for explaining an implementation operation for changing a dust detection interval in software in a mobile terminal related to the present invention.
FIGS. 7A, 7B, and 7C are exemplary conceptual diagrams illustrating a different application of the optical blink period and the dust detection time according to the moving speed of the detected dust particles in the mobile terminal according to the present invention.
8A, 8B and 9 are different flowcharts for explaining an operation method for replacing a dust sensor of a mobile terminal with a proximity sensor according to the present invention.
16A, 16B, 14C, 15A, 15B, 15C, 16A, 16B, 16A, 16B, 16A, 16B, 16A, 16B, 16A, 16B, 16C, 16D, 17A, 17B, 17C, 17D, 18A, 18B, 18C, 19A and 19B show the dust information detected by the dust sensor of the mobile terminal according to the present invention Which are related to various embodiments of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix " module " and " part " for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. In addition, it should be noted that the attached drawings are only for easy understanding of the embodiments disclosed in the present specification, and should not be construed as limiting the technical idea disclosed in the present specification by the attached drawings.

It is also to be understood that when an element such as a layer, region or substrate is referred to as being present on another element "on," it is understood that it may be directly on the other element or there may be an intermediate element in between There will be.

1A is a block diagram for explaining a terminal 100 related to the present invention.

The terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, . ≪ / RTI > The components shown in FIG. 1 are not essential to the implementation of the terminal 100, so that the terminal 100 described herein may have more or fewer components than the components listed above.

The wireless communication unit 110 may be configured to perform wireless communication between the terminal 100 and the wireless communication system or between the terminal 100 and another mobile terminal or between the terminal 100 and an external server Lt; RTI ID = 0.0 > and / or < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114, and a location information module 115 .

The input unit 120 includes a camera 121 or an image input unit for inputting a video signal, a microphone 122 for inputting an audio signal, an audio input unit, a user input unit 123 for receiving information from a user A touch key, a mechanical key, and the like). The voice data or image data collected by the input unit 120 may be analyzed and processed by a user's control command.

The sensing unit 140 may include one or more sensors for sensing at least one of the information in the terminal 100, the surrounding environment information surrounding the terminal 100, and the user information. For example, the sensing unit 140 may include a proximity sensor, an illumination sensor, a touch sensor, an acceleration sensor, a magnetic sensor, a gravity sensor A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone, a battery gauge, an environmental sensor (e.g., a barometer, a hygrometer, a thermometer, a radiation detection sensor, a thermal sensor A sensor, a gas sensing sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

Also, in the present invention, the sensing unit 140 further includes a dust sensor 143 for detecting dust around the terminal. In addition, the dust sensor 143 may serve as a proximity sensor when necessary. In this case, it is possible to remove the hardware proximity sensor.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen functions as a user input unit 123 that provides an input interface between the terminal 100 and a user and can provide an output interface between the terminal 100 and a user.

The interface unit 160 serves as a path for communication with various types of external devices connected to the terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the terminal 100. The memory 170 may store a plurality of application programs or applications that are driven by the terminal 100, data for operation of the terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least some of these application programs may reside on the terminal 100 from the time of departure for the basic functions (e.g., call incoming, outgoing, message receiving, originating functions) of the terminal 100. The application program may be stored in the memory 170 and may be installed on the terminal 100 and may be operated by the controller 180 to perform the operation (or function) of the terminal 100.

The control unit 180 typically controls the overall operation of the terminal 100, in addition to the operations associated with the application program. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1A in order to drive an application program stored in the memory 170. FIG. In addition, the controller 180 can operate at least two of the components included in the terminal 100 in combination with each other for driving the application program.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to the components included in the terminal 100. The power supply unit 190 includes a battery, which may be an internal battery or a replaceable battery.

At least some of the components may operate in cooperation with one another to implement the method of operation, control, or control of the terminal 100 according to the various embodiments described below. Also, the operation, control, or control method of the terminal 100 may be implemented on the mobile terminal by driving at least one application program stored in the memory 170.

Hereinafter, the components listed above will be described in more detail with reference to FIG. 1, before explaining various embodiments implemented through the terminal 100 as described above.

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. More than one such broadcast receiving module may be provided to the terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The mobile communication module 112 may be a mobile communication module or a mobile communication module such as a mobile communication module or a mobile communication module that uses technology standards or a communication method (e.g., Global System for Mobile communication (GSM), Code Division Multi Access (CDMA), Code Division Multi Access 2000 (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution And an external terminal, or a server on a mobile communication network established according to a long term evolution (AR), a long term evolution (AR), or the like.

The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the terminal 100. The wireless Internet module 113 is configured to transmit and receive a wireless signal in a communication network according to wireless Internet technologies.

Wireless Internet technologies include, for example, wireless LAN (WLAN), wireless fidelity (Wi-Fi), wireless fidelity (Wi-Fi) Direct, DLNA (Digital Living Network Alliance), WiBro Interoperability for Microwave Access, High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE) and Long Term Evolution-Advanced (LTE-A) 113 transmit and receive data according to at least one wireless Internet technology, including Internet technologies not listed above.

The wireless Internet module 113 for performing a wireless Internet connection through the mobile communication network can be used for wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE or LTE- May be understood as a kind of the mobile communication module 112.

The short-range communication module 114 is for short-range communication, and includes Bluetooth ™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB) (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technology. The short-range communication module 114 may communicate with the terminal 100 through a wireless communication network, between the terminal 100 and another mobile terminal, or between the terminal 100 and another mobile terminal Or an external server) may be supported. The short-range wireless communication network may be a short-range wireless personal area network.

Herein, another mobile terminal may be a wearable device (e.g., a smart watch, a smart glass, etc.) capable of interchanging data with the terminal 100 according to the present invention ), Head mounted display (HMD)). The short-range communication module 114 may detect (or recognize) a wearable device capable of communicating with the terminal 100, around the terminal 100. If the detected wearable device is a device authenticated to communicate with the terminal 100 according to the present invention, the control unit 180 may transmit at least a part of data processed in the terminal 100 to the short- To the wearable device. Therefore, the user of the wearable device can use the data processed by the terminal 100 through the wearable device. For example, the user can make a phone call through the wearable device when a phone call is received in the terminal 100, or transmit the received message via the wearable device when a message is received in the terminal 100 It is possible to confirm.

The position information module 115 is a module for obtaining the position (or current position) of the terminal 100, and representative examples thereof include a Global Positioning System (GPS) module or a Wireless Fidelity (WiFi) module. For example, when the terminal 100 utilizes a GPS module, it can acquire the position of the terminal 100 using a signal transmitted from the GPS satellite. As another example, when the terminal 100 utilizes a Wi-Fi module, it acquires the position of the terminal 100 based on information of a wireless access point (AP) that transmits or receives a wireless signal with the Wi-Fi module can do. Optionally, the location information module 115 may replace or, in addition, perform at least one of the other modules of the wireless communication unit 110 to obtain data regarding the location of the terminal 100. The position information module 115 is a module used to obtain the position (or the current position) of the terminal 100, and is not limited to a module that directly calculates or acquires the position of the terminal 100. [

The input unit 120 is for inputting image information (or signal), audio information (or signal), data, or information input from a user. For inputting image information, A plurality of cameras 121 may be provided. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. [ A plurality of cameras 121 provided in the terminal 100 may be arranged to have a matrix structure and a plurality of cameras 121 having various angles or foci may be provided to the terminal 100 through the camera 121 having a matrix structure, Can be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure so as to acquire a left image and a right image for realizing a stereoscopic image.

The microphone 122 processes the external acoustic signal into electrical voice data. The processed voice data can be utilized variously according to a function (or an application program being executed) being performed in the terminal 100. Meanwhile, the microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 123 is for receiving information from a user. When information is inputted through the user input unit 123, the controller 180 can control the operation of the terminal 100 to correspond to the input information. The user input unit 123 may include a mechanical input unit (or a mechanical key such as a button located on the front or rear or side of the terminal 100, a dome switch, a jog wheel, Etc.) and touch-type input means. For example, the touch-type input means may comprise a virtual key, a soft key or a visual key displayed on the touch screen through software processing, And a touch key disposed on the touch panel. Meanwhile, the virtual key or the visual key can be displayed on a touch screen having various forms, for example, a graphic, a text, an icon, a video, As shown in FIG.

Meanwhile, the sensing unit 140 senses at least one of information in the terminal 100, surrounding environment information surrounding the terminal 100, and user information, and generates a corresponding sensing signal. The control unit 180 may control the driving or operation of the terminal 100 or may perform data processing, function or operation related to the application program installed in the terminal 100 based on the sensing signal. Representative sensors among various sensors that may be included in the sensing unit 140 will be described in more detail.

The dust sensor 143 is a sensor for detecting the number of minute dust particles or condensation nucleus floating around the terminal 100. Examples of the detection method of the dust sensor 143 include a side scattering type, a near infrared scattering type, a piezo equilibrium type, and an Owens dust type. Of these, the side scattering method and the near-infrared scattering method, which are optical detection methods, detect the scattered light amount by detecting the scattered light amount according to the particle size when the light is irradiated on the dust particles, thereby detecting the number of dusts .

1B, the dust sensor 143 may be arranged adjacent to the illuminance sensor 142 in parallel to the bezel upper end of the mobile terminal 100. [

Meanwhile, the dust sensor 143 may replace the proximity sensor or perform the role of the proximity sensor. A proximity sensor (not shown) refers to a sensor that detects the presence of an object approaching a predetermined detection surface, or the presence of an object in the vicinity of the detection surface, without mechanical contact by using electromagnetic force or infrared rays. Such a proximity sensor may be additionally disposed in the inner area of the terminal 100 wrapped by the touch screen as described above or near the touch screen, or may be replaced by the dust sensor 143 as described above. This will be described in more detail below.

Examples of the proximity sensor 141 include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. In the case where the touch screen is electrostatic, the proximity sensor 141 can be configured to detect the proximity of the object with a change of the electric field along the proximity of the object having conductivity. In this case, the touch screen (or touch sensor) itself may be classified as a proximity sensor.

On the other hand, for convenience of explanation, the act of recognizing that the object is located on the touch screen in proximity with no object touching the touch screen is referred to as " proximity touch & The act of actually touching an object on the screen is called a " contact touch. &Quot; The position at which the object is closely touched on the touch screen means a position where the object corresponds to the touch screen vertically when the object is touched. The proximity sensor 141 can detect a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, have. Meanwhile, the control unit 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141 as described above, and further provides visual information corresponding to the processed data It can be output on the touch screen. Furthermore, the control unit 180 may control the terminal 100 so that different operations or data (or information) are processed according to whether the touch to the same point on the touch screen is a proximity touch or a contact touch.

The touch sensor senses a touch (or touch input) applied to the touch screen (or the display unit 151) by using at least one of various touch methods such as a resistance film type, a capacitive type, an infrared type, an ultrasonic type, do.

For example, the touch sensor may be configured to convert a change in a pressure applied to a specific portion of the touch screen or a capacitance generated at a specific portion into an electrical input signal. The touch sensor may be configured to detect a position, an area, a pressure at the time of touch, a capacitance at the time of touch, and the like where a touch object touching the touch screen is touched on the touch sensor. Here, the touch object may be a finger, a touch pen, a stylus pen, a pointer, or the like as an object to which a touch is applied to the touch sensor.

Thus, when there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like. Here, the touch controller may be a separate component from the control unit 180, and may be the control unit 180 itself.

On the other hand, the control unit 180 may perform different controls or perform the same control according to the type of the touch object touching the touch screen (or a touch key provided on the touch screen). Whether to perform different controls or to perform the same control depending on the type of the touch object can be determined according to the current state of the terminal 100 or an application program being executed.

On the other hand, the touch sensors and the proximity sensors discussed above can be used independently or in combination to provide a short touch (touch), a long touch, a multi touch, a drag touch ), Flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, and the like. Touch can be sensed.

The ultrasonic sensor can recognize the position information of the object to be sensed by using ultrasonic waves. Meanwhile, the controller 180 can calculate the position of the wave generating source through the information sensed by the optical sensor and the plurality of ultrasonic sensors. The position of the wave source can be calculated using the fact that the light is much faster than the ultrasonic wave, that is, the time when the light reaches the optical sensor is much faster than the time the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generating source can be calculated using the time difference with the time when the ultrasonic wave reaches the reference signal.

The camera 121 includes at least one of a camera sensor (for example, a CCD, a CMOS, etc.), a photo sensor (or an image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to sense a touch of the sensing object with respect to the three-dimensional stereoscopic image. The photosensor may be laminated to the display element, which is configured to scan the movement of the object proximate the touch screen. More specifically, the photosensor mounts photo diodes and TRs (Transistors) in a row / column and scans the contents loaded on the photosensor using an electrical signal that varies according to the amount of light applied to the photo diode. That is, the photo sensor performs coordinate calculation of the object to be sensed according to the amount of change of light, and position information of the object to be sensed can be obtained through the calculation.

The display unit 151 displays (outputs) information to be processed by the terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the terminal 100, or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information.

In addition, the display unit 151 may be configured as a stereoscopic display unit for displaying a stereoscopic image.

In the stereoscopic display unit, a three-dimensional display system such as a stereoscopic system (glasses system), an autostereoscopic system (no-glasses system), and a projection system (holographic system) can be applied.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output unit 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, and the like) performed in the terminal 100. [ The audio output unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated in the haptic module 153 can be controlled by the user's selection or the setting of the control unit. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output the vibrations.

In addition to vibration, the haptic module 153 includes a pin arrangement vertically moving with respect to the contacted skin surface, a spraying force or suction force of the air through the injection port or the suction port, a touch on the skin surface, contact of an electrode, And various effects of tactile effect such as effect of reproducing the cold sensation using the heat absorbing or heatable element can be generated.

The haptic module 153 can transmit the tactile effect through the direct contact, and the tactile effect can be felt by the user through the muscles of the finger or arm. At least two haptic modules 153 may be provided according to the configuration of the terminal 100.

The light output unit 154 outputs a signal for notifying the occurrence of an event using the light of the light source of the terminal 100. Examples of events that occur in the terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, email reception, information reception through an application, and the like.

The signal output by the light output unit 154 is implemented as the terminal 100 emits light of a single color or a plurality of colors to the front or rear surface. The signal output may be terminated by the terminal 100 detecting the event confirmation of the user.

The interface unit 160 serves as a path for communication with all external devices connected to the terminal 100. The interface unit 160 receives data from an external device or supplies power to each component in the terminal 100 or transmits data to the external device in the terminal 100. For example, a port for connecting a device equipped with a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, an audio I / O port, a video I / O port, an earphone port, and the like may be included in the interface unit 160.

The identification module is a chip for storing various information for authenticating the usage right of the terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM) a universal subscriber identity module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the interface unit 160. [

When the terminal 100 is connected to an external cradle, the interface unit 160 may be a path through which the power from the cradle is supplied to the terminal 100, A command signal may be transmitted to the terminal 100. Various command signals input from the cradle or the power source can be operated with a signal for recognizing that the terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 170 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 170 may be a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), a multimedia card micro type ), Card type memory (e.g., SD or XD memory), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read memory, a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and / or an optical disk. The terminal 100 may operate in association with a web storage that performs the storage function of the memory 170 on the Internet.

Meanwhile, as described above, the control unit 180 controls the operations related to the application program and the general operation of the terminal 100. [ For example, when the state of the terminal 100 satisfies a set condition, the controller 180 can execute or release a lock state for restricting input of a user's control command to applications.

In addition, the control unit 180 performs control and processing related to voice communication, data communication, video call, or the like, or performs pattern recognition processing to recognize handwriting input or drawing input performed on the touch screen as characters and images, respectively . Further, the controller 180 may control any one or a plurality of the above-described components in order to implement various embodiments described below on the terminal 100 according to the present invention.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components. The power supply unit 190 includes a battery, the battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like.

Also, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of the interface unit 160 to which an external charger for supplying power for charging the battery is electrically connected.

As another example, the power supply unit 190 may be configured to charge the battery in a wireless manner without using the connection port. In this case, the power supply unit 190 may use at least one of an inductive coupling method based on a magnetic induction phenomenon from an external wireless power transmission apparatus and a magnetic resonance coupling method based on an electromagnetic resonance phenomenon Power can be delivered.

In the following, various embodiments may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

Hereinafter, a structure of a terminal 100 or a terminal in which the above-described components are arranged according to an embodiment of the present invention shown in FIG. 1A will be described with reference to FIG. 1B and FIG. 1C.

Referring to FIGS. 1B and 1C, the disclosed terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . The following discussion will be related to a particular type of mobile terminal, but a description of a particular type of mobile terminal is generally applicable to other types of mobile terminals.

Here, the terminal body can be understood as a concept of referring to the terminal 100 as at least one aggregate.

The terminal 100 includes a case (for example, a main body, a frame, a housing, a cover, etc.) which forms an appearance. As shown, the terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in the inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on a front surface of the terminal body to output information. The window 151a of the display unit 151 may be mounted on the front case 101 to form a front surface of the terminal body together with the front case 101. [

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 300 during the coupling. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

These cases 101, 102, and 103 may be formed by injection molding of synthetic resin or may be formed of metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

The terminal 100 may be configured such that one case provides the internal space, unlike the above example where a plurality of cases provide an internal space for accommodating various electronic components. In this case, a unibody terminal 100 in which a synthetic resin or metal is connected from the side to the rear can be realized.

Meanwhile, the terminal 100 may include a waterproof portion (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, an illuminance sensor 142, a dust sensor 143, a light output unit 154, First and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

1B and 1C, a display unit 151, a first sound output unit 152a, an illuminance sensor 142, a dust sensor 143, and an optical output unit (not shown) A first camera 121a and a first operation unit 123a are arranged on a side of the terminal body and a second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, The second sound output unit 152b and the second camera 121b are disposed on the rear side of the terminal 100. [

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

The display unit 151 displays (outputs) information to be processed by the terminal 100. For example, the display unit 151 may display execution screen information of an application program driven by the terminal 100, or UI (User Interface) and GUI (Graphic User Interface) information according to the execution screen information.

The display unit 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, a 3D display, and an e-ink display.

In addition, the display unit 151 may exist in two or more depending on the embodiment of the terminal 100. In this case, a plurality of display units may be spaced apart from each other on the one surface of the terminal 100, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a character or a number, an instruction in various modes, or a menu item that can be designated.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as a user input unit 123 (see FIG. 1A). In some cases, the touch screen may replace at least some functions of the first operation unit 123a. Hereinafter, for convenience of explanation, the display unit (display module) for outputting the image and the touch sensor are collectively referred to as a touch screen.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the terminal 100 can be made more simple because the holes that are formed independently for the apparent acoustic output are hidden or hidden.

The optical output unit 154 is configured to output light for notifying the occurrence of an event. Examples of the event include a message reception, a call signal reception, a missed call, an alarm, a schedule notification, an email reception, and reception of information through an application. The control unit 180 may control the light output unit 154 to terminate the light output when the event confirmation of the user is detected.

The first camera 121a processes an image frame of a still image or a moving image obtained by the image sensor in the photographing mode or the video communication mode. The processed image frame can be displayed on the display unit 151 and can be stored in the memory 170. [

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of the user input portion 123 operated to receive a command for controlling the operation of the terminal 100 . The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to input a command for controlling the operation of the terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

The rear input unit may be disposed so as to overlap with the front display unit 151 in the thickness direction of the terminal body. For example, the rear input unit may be disposed at the rear upper end of the terminal body such that when the user holds the terminal body with one hand, the rear input unit can be easily operated using the index finger. However, the present invention is not limited thereto, and the position of the rear input unit may be changed.

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 may be configured as a larger screen.

Meanwhile, the terminal 100 may be provided with a fingerprint recognition sensor for recognizing the fingerprint of the user, and the controller 180 may use the fingerprint information sensed through the fingerprint recognition sensor as authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive the user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (for example, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port Port, a wireless LAN port, etc.), or a power supply terminal for supplying power to the terminal 100. The interface unit 160 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

And a second camera 121b may be disposed on a rear surface of the terminal body. In this case, the second camera 121b has a photographing direction which is substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix form. Such a camera can be named an 'array camera'. When the second camera 121b is configured as an array camera, images can be taken in various ways using a plurality of lenses, and a better quality image can be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 shines light toward the subject when the subject is photographed by the second camera 121b.

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1A) may be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 300, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1A) for supplying power to the terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to be wirelessly chargeable through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

The rear cover 103 is configured to be coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 300 may be detachably coupled to the rear case 102.

The terminal 100 may be provided with an accessory that protects the appearance or supports or extends the function of the terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the terminal 100. The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the terminal 100. [ Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

Hereinafter, the mobile terminal of the terminal 100 described above will be described. 2a and 2b are exploded views illustrating a dust sensor included in the mobile terminal 100 according to the present invention.

2A, a space is formed inside the mobile terminal 100 by a front case 101 and a rear case 102, and a rear cover 103 is coupled to a rear case 102. [ A storage space for mounting the battery 191 may be formed on one side of the rear case 102. Further, the rear cover 103 may be mounted on the rear case 102 so as to cover the battery 191.

An inner frame 104 is disposed inside the rear case 102. A display unit 151 is coupled to one side of the inner frame 104 and a circuit board 181 is provided at the other side of the inner frame 104. The circuit board 181 may be formed so as not to overlap with the battery 191. On the circuit board 181, a plurality of electronic devices (not shown) including a driving chip (not shown) may be disposed.

An inner frame 104 is mounted between the front case 101 and the rear case 102. The dust sensor 143 described above is mounted on the upper end of the inner frame 104, and a storage space is provided in the inner frame 104 for this purpose. A hole is provided in the upper end of the inner frame 104 at a position of the inner frame 104 corresponding to the dust sensor 143 so that light can pass through the hole of the window 151a . Here, holes are means for light to pass therethrough, and do not mean spaces or passages for the inflow of air.

The dust sensor 143 communicates with the circuit board 181 located on the back surface of the inner frame 104, and the sensed signal is transmitted through the dust sensor 143. The circuit board 181 can detect dust using the transmitted signal.

2B is an enlarged view of an upper part of an exploded view of the mobile terminal 100. [ 2B, the mobile terminal 100 includes a front window 151a, an inner frame 104, and a circuit board 181 of the front case 101 so as to detect dust floating around the terminal, A hole through which light passes in a straight line can be formed, and they are connected to each other in a straight line.

At this time, the hole is merely a means for transmitting light, and does not form an air passage or an internal space for inflow. That is, in the present invention, there is no need to design a chamber through which air flows or a passage for adjusting the path of light. In addition, in the present invention, dust particles can be detected without adjusting the path of scattered light returning from the laser beam and the dust particles to be emitted, and no rotating / moving structure is added to make the density of light and the measurement region.

The dust sensor 143 according to the present invention emits light emitted from a light source, for example, a rare-earth light, through a hole H to the outside of the front window. The emitted laser light is scattered when the dust particles meet, and the dust particles are detected as the reflected scattered light is received by the dust sensor 143 through the hole H. [ Information on the size, distance, and number of dust particles is recognized according to the analysis of signals corresponding to the scattered light.

2B, the hole H1 located at the upper end of the front window 151a communicates with the hole H2 disposed at the upper end of the inner frame 104. [ Further, the dust sensor 143 is mounted adjacent to the hole H2 of the inner frame. At this time, no space is formed between the holes H1 and H2, and between the holes H1 and H2 and the dust sensor 143, or any passage for changing the light path. Therefore, even if the dust sensor 143 is mounted, the thickness and size of the product do not increase.

Specifically, the light emitting portion that emits light through the hole and the emitted light are irradiated to the dust particles floating in the air and then the scattered light that comes in through the hole is detected at the upper end of the inner frame 104, A dust sensor 143 having a light receiving portion for generating a light is mounted. The dust sensor 143 may be mounted on a separate middle frame (not shown) or packaged in an FPCB configuration according to the set structure, in order to prevent damage to the internal parts of the terminal.

Further, the dust sensor 143 can be mounted at a position where the existing proximity sensor is disposed. Further, in the present invention, it is possible to implement the dust sensor 143 that performs the role of the proximity sensor through software control without adding or changing the optical design of the front window. Accordingly, not only the manufacturing cost of the terminal is reduced, but also the size of the hole can be reduced, thereby realizing the product of the bezelless design.

Meanwhile, the light emitting unit and the light receiving unit of the dust sensor 143 may be composed of, for example, a single laser diode and a single lens. That is, after the laser light emitted from one laser photodiode is emitted outside the window through the lens, the light scattered by the dust particles again passes through the hole and the lens and is received by the same photodiode (laser) And the like.

In addition, the dust sensor according to the present invention has a structure in which the laser light, the lens, and the front window are arranged side-by-side in a straight line, since no additional space is required for introducing air or adjusting the optical path. At this time, the problem that the dust detection section is relatively narrowed can be solved by adjusting the range of FOV (Field Of View) by software as will be described in more detail below.

The signal corresponding to the scattered light received by the dust sensor 143 is transmitted to the circuit board 181 shown in FIG. 2B, and the controller 180 senses dust using the transmitted signal. Further, the controller 180 can control the dust detection time or the detection period by controlling the blinking period of the light emitting portion of the dust sensor 143.

3A, 3B, and 3C are views for explaining an example structure related to a dust sensor included in a mobile terminal according to the present invention.

FIG. 3A is an illustration of an embodiment implemented by deleting an existing IR coating film that was deposited at the hole position corresponding to the dust sensor in the front window. In the conventional mobile terminal 100, an IR coating film is deposited on the back surface of the upper end of the bezel where the proximity sensor and the illuminance sensor 142 are located, that is, the front window. However, since the dust sensor 143 applied to the mobile terminal 100 according to the present invention uses a laser beam of about 850 nm band close to the visible light band and is not directly used for human iris, It is not against international standards.

Therefore, in the present invention, the IR coating film is removed at the hole position through which the light emitted from the dust sensor 143 or received by the dust sensor 143 passes, or the dust sensor 143 and the adjacent The IR coating film may be removed in the position where the illuminance sensor 142 is mounted. In the latter case, since the transmittance of the visible light ray increases (by about 20%) as the IR coating film is removed, the sensitivity of the illuminance sensor 142 can be further improved.

As another example, Figures 3b and 3c illustrate the implementation of the dust sensor in detachable sub-body or module form. 3B shows a PCB-based middle frame with an interposer between the main PCB and the sensor unit, and FIG. 3C shows the FPCB structure according to the set structure.

3B and 3C, a substrate 145 is deposited on a flexible PCB / FPCB 144 and a dust sensor 143 having a laser photodiode 143a is deposited on the substrate 145 Or the like. This modular implementation facilitates high-level design and packaging for the bezel.

As described above, the dust sensor 143 applied to the mobile terminal 100 according to the present invention is embedded in a position corresponding to the hole formed at the top of the front window 151a and the inner frame 104 adjacent thereto. In addition, the laser light emitted from the light emitting portion, for example, the laser light diode 143a, provided on the dust sensor 143 may be linearly emitted without changing the path, Are arranged in a straight line.

4 is a conceptual diagram for explaining a software implementation operation for extending a dust detection interval in a dust sensor having such a structure.

4, the structure of the dust sensor according to the present invention includes a light source unit (e.g., Laser + PD 143a) for emitting light, a lens 143b for condensing light, and an outer cover window The size / number / moving speed of dust particles existing in a certain range outside the terminal can be detected on the basis of the intensity, quantity of light, and number of scattered light returned and reflected by the emitted laser beam.

In this regard, a method for detecting the size and the number of dust particles in the mobile terminal according to the present invention will be described in detail based on the pulse output signals shown in FIGS. 5A and 5B.

A pulse output signal is generated by detecting the scattered light coming from the laser beam emitted from the light source 143a and coming in contact with the dust particles. The control unit 180 determines the size, number, and movement speed of the dust using the width, number, and time difference of the pulse output signal generated in real time. For example, when the scattered light is incident on the light source 143a, the controller 180 can recognize the boundary and size of the dust particles according to the intensity and intensity of the scattered light. In this regard, Figure 5a is intended to illustrate the detection of a single dust particle and Figure 5b to illustrate the detection of multiple dust particles.

In the pulse output signal of FIG. 5A, when no dust particles are detected, a high voltage of about 4.5 V is output. A low voltage of 0.7 V is output. At this time, the timing periods t1 to t2 when the dust particles are detected correspond to the size and velocity of the detected dust particles. In the pulse output signal graph of Fig. 5B, the number of pulses in the X direction (A) corresponds to the number of detected dust particles, and the pulse width in the Y direction (B) corresponds to the size of the detected dust particles.

Referring again to FIG. 4, in the present invention, since only the dust passing through the a region is detected using the linearity of the laser light, it is not necessary to use a conventional refractive lens (for example, uMirror). Accordingly, it is possible to realize a miniaturized dust sensor, and it is not necessary to provide additional space inside the mobile terminal 100, and since the diameter of the hole a is also sufficient as the size of the hole a, ) Is implemented. Further, the front window 151a is usually used when a light source is used, and corresponds to a fixed structure for making a light density and a measurement area, so that no additional design is required.

Accordingly, there is a disadvantage in that the thickness and size of the parts are reduced and the bezelless design can be realized, while the dust detection section (or range) is also narrowed accordingly.

4, the laser light emitted from the light emitting portion 143a of the dust sensor 143 is condensed through the lens 143b, and then is emitted to the outside through the hole H of the window 151a. Therefore, the actual detection period in which dust particles floating in the air are detected is very narrow as the 'a' region. In such a case, the accuracy of dust concentration detection for judging the degree of comfort of the air deteriorates.

In order to solve this problem, the controller 180 of the mobile terminal 100 according to the present invention changes the optical blink period of the light source 143a according to the size, number, and movement speed of the detected dust, It is possible to extend the dust detection range. For example, although the actual dust detection period is limited to the 'a' region, a software design such as detecting dust within the expanded FOV range by adjusting the dust detection time and / or detection period for the 'a' region It becomes possible.

Specifically, software design changes with a wide FOV range are possible by increasing the dust detection time for the 'a' region. In other words, the controller 180 may adjust the driving time of the dust sensor 143 to adjust the size of the detection interval. At this time, a condition for adjusting an appropriate driving time can be preset or changed. To this end, the control unit 180 may operate to set a plurality of dust concentration levels in advance, calculate a dust concentration level that matches the detected dusts, and determine a driving time corresponding thereto. At this time, the dust concentration level can be set proportional to the number and size of the detected dust particles.

In addition, the controller 180 may increase the dust detection time such that the extended reference range, that is, the FOV range, increases as the determined dust concentration level increases.

For example, FIG. 6A shows a case where the dust sensor 143 is driven for about 3 seconds when the dust concentration level is 1 ('good', about 0 to 12 ug / m 3) can do. 6B shows a case in which the dust sensor 143 is driven continuously for about 5 seconds when the dust concentration level is 2 ('normal', about 12.1 to 35.4 ug / m 3) to detect dust in the FOV 30 ° range A2 . 6C shows a case in which the dust sensor 143 is driven continuously for about 7 seconds in the case where the dust concentration level is 3 ('bad', about 35.5 to 55.4 ug / m3) to detect dust in the FOV 45˚ range A3 .

When the dust concentration level is low, the driving time of the dust sensor 143 is shortened and the detection period is long, so that the consumption current due to the driving (light emission) of the dust sensor 143 can be reduced. On the other hand, if the dust concentration level is high, the driving time of the dust sensor 143 is increased and the detection period is made shorter, so that the accuracy of dust concentration detection can be improved.

For example, when the size of the dust is large and the dust concentration level is high, the control unit 180 can shorten the light blinking period of the dust sensor 143 and shorten the detection period so as to correspond thereto.

The driving time and the detection period of the dust sensor are set so that the dust concentration level and the optimum driving time (and the detection period) corresponding to them are balanced so that the conflicting needs of the dust concentration detection accuracy and the consumption current reduction can be balanced And can be stored in advance in the memory 170 in the form of a table. The values stored in the memory 170 may be changed or initialized through user input.

In the present invention, whether to adjust the dust detection time and the detection cycle using the fixed reference FOV range or to adjust the dust detection time and the detection cycle to have the variable FOV range according to the situation may be selectively applied through the software implementation .

In one embodiment, the extension of the FOV range is not necessarily proportional to the performance of the dust detection, and the more the FOV range is increased, the higher the consumption current. Therefore, in order to reduce the battery consumption current, the dust detection time and the detection period can be varied based on the fixed reference FOV range.

Specifically, the control unit 180 calculates the moving speed of the dust passing through the dust detecting section by using a signal (for example, a pulse output signal) generated in real time through the dust sensor 143 at first, The detection time can be variably applied according to the moving speed of the dust calculated to detect the dust in the reference FOV range (i.e., the reference FOV range).

As described above, by applying the optimized dust detection time corresponding to the moving speed of the dust particles, it is possible to realize the operation of the dust sensor with minimized consumption current while satisfying the dust concentration detection performance.

For example, FIGS. 7A, 7B, and 7C are exemplary conceptual diagrams for explaining application of the optical blink period and the dust detection time differently according to the moving speed of the detected dust particles in the mobile terminal related to the present invention. In Fig. 7A, suppose that there are dust particles 602 that pass quickly through the area a and dust particles 601 that pass more slowly.

In this case, the moving speed of the dust particles passing through the a region is determined by the difference between the arrival time difference of the scattered light reflected by the dust particles and the size and distance information of the dust particles according to the light intensity, The speed can be calculated. Next, a fixed FOV (for example, 45 degrees) can be implemented by adjusting the light blink period (or optical wavelength period) and the detection time of the light source portion of the dust sensor through a known algorithm according to the calculated traveling speed.

For example, in the case of the dust particles 602 passing quickly through the area a, as shown in FIG. 7B, the wavelength period 611 (that is, the light blink period) of the laser light emitted from the dust sensor 143 Change the dust detection time shortly. Accordingly, the dust particles 602 can be detected in the fixed FOV range (e.g., 45 degrees).

On the other hand, in the case of the dust particles 601 passing slowly through the area a, the wavelength period 612 of the laser light emitted from the dust sensor 143 shown in FIG. 7C (that is, the light blink period) Change the dust detection time longer. As a result, the dust particles 601 can be detected in the fixed FOV range (e.g., 45 degrees) as in Fig. 7B, and the consumption current can be reduced.

Also, since the battery consumption current is also increased as the dust detection time matching the dust moving speed is longer, the controller 180 controls the light blinking period of the dust sensor 143 to be slowed down to reduce the battery consumption current . For this purpose, the controller 180 sets the maximum value of the dust detection time in advance, and when the dust detection time exceeding the maximum value of the comparison result is calculated, the control unit 180 can adjust the light blinking period, which is emitted from the dust sensor 143, have.

In another embodiment, the dust detection time and the detection period may be adjusted to have a variable FOV range in consideration of the remaining battery capacity of the mobile terminal 100. [ An implementation method related to this is similar to that described above with reference to Figs. 6A to 6C.

For example, if the remaining battery capacity is less than the reference value, the dust detection time is reduced and the detection period is made slow, so that the amount of current consumed by driving the dust sensor 143 can be minimized. As another example, when the remaining battery capacity is sufficient, the dust detection time and the detection period are adjusted differently so that the dust within the variable FOV range is detected according to the dust concentration level, so that more accurate dust concentration detection can be performed in an environment having a high dust concentration level have.

Another example is to allow selection of normal measurement mode and fine measurement mode, to perform a general measurement mode in response to user feedback, or to detect dust in the extended FOV range by increasing the dust detection time even if the battery consumption increases. The precision measurement mode may be selectively activated. However, as the FOV range increases, the performance of the dust concentration detection is not improved in proportion, so the maximum value of the FOV range can be set in advance.

8A, 8B, and 9 are different flowcharts for describing an operation method for replacing a dust sensor of a mobile terminal with a proximity sensor according to the present invention. In the present invention, the conventional hardware proximity sensor can be removed and the proximity sensor can be replaced through the dust sensor 143 as described above. It is necessary to implement an operation for preventing a function collision between the proximity sensor and the dust sensor 143.

In this regard, referring to FIG. 8A, a step S801 in which the dust sensor is activated by the control signal generated by the control unit 180 is started. Here, the control signal may be generated through a user input or may be generated in conjunction with the operation of a specific function. In the latter case, the dust sensor can be activated in conjunction with the operation of turning on the display unit 151 as an example.

The dust around the mobile terminal is detected in real time according to the activation of the dust sensor (S802). While the dust is being detected, the controller 180 of the mobile terminal 100 may recognize whether an object exceeding the threshold size is detected (S803). In response to the detection state, the dust sensor operates in the proximity mode (S804). Here, the proximity mode means that an operation of detecting the proximity of an object through the dust sensor (hereinafter referred to as a 'second operation') is performed.

Subsequently, in response to the determination that dust detection within the critical distance is possible during the second operation mode, or whether or not a predetermined time has elapsed (S805), the controller 180 stops the second operation And performs an operation mode (hereinafter referred to as a 'first operation') for detecting dust again through the dust sensor. Here, the predetermined time means a time that elapses so that the proximity of the object in the operation mode is no longer required to be detected or can be seen as the release of the proximity state of the object. With this implementation, it is possible to perform the function without collision between the dust sensor and the proximity sensor.

8B, when the dust sensor 143 of the mobile terminal 100 is activated (S811), dust is detected in real time (S812). While detecting the dust, the controller 180 may sense that the mobile terminal 100 enters a predetermined operation mode (S813). In operation S814, a second operation mode is performed to detect proximity of an object through the dust sensor as the entry into the predetermined operation mode is detected.

Here, the predetermined operation mode may include, for example, a case in which a call is performed, a case in which a user is carrying a mobile terminal through a proximity acceleration sensor or the like, and an operation mode requiring another proximity sensing is executed .

If it is determined that the predetermined operation mode has been terminated (S815), the process returns to step S812 to perform a first operation mode for detecting dust in real time again.

In addition, although not shown, the optical flicker period and the sensing period of the dust sensor may be changed to be different from the previous one in order to prevent the collision between the first operation mode and the second operation mode.

As another example, referring to the operation implementation of FIG. 9, a default setting or a fixed proximity mode is performed (S901), and it is determined whether to enter the dust detection mode according to the dust concentration level detected during the close mode (S902). If the dust concentration level is found to be higher than the reference level, a first operation mode for detecting real-time dust can be performed (S903). At this time, the first operation mode can be performed in a precise measurement mode according to the level of the dust concentration level detected during the proximity mode, that is, the dust detection time is increased beyond the reference value and the detection period is shortened. Alternatively, it is possible to detect dust detected through the dust sensor at a predetermined detection period during a predetermined dust detection time.

If it is determined that the dust detection measurement is completed (S904), the flow returns to step S901 to perform the proximity mode operation. On the other hand, if an interrupt has occurred during dust detection (S905), it may be detected whether the predetermined operation mode has been entered (S906). Here, the interrupt is a state detection that is difficult to perform the first operation mode, and can mean the interruption of the first operation mode. As an example, this may be the case when the above-mentioned predetermined operation mode is entered, or when proximity of an object exceeding the threshold size is detected or a call is performed.

As a result of the determination in step S906, if the occurrence of the interrupt does not correspond to the entry into the predetermined operation mode, the illumination sensor 142 provided in the mobile terminal is activated (S907) to detect a low illumination state below the reference value (S908) . Here, the low-illuminance state corresponds to a case where an illuminance value lower than the reference value is detected. For example, if the terminal is placed in a position (e.g., in the back of the terminal), in a state (e.g., a hole in the dust sensor), or in such a place May be included.

If it is not in the low-illuminance state, the first operation mode (S903, S904) that has been interrupted is executed. On the other hand, if the low-illuminance state is detected, the process returns to step S901 to perform the proximity mode operation (S901).

In the above, the structure of the dust sensor applied to the mobile terminal 100 according to the present invention, the software implementation for extending / changing the dust detection interval in this structure, and the implementation for preventing the collision between the dust sensor and the proximity sensor function I looked at the behavior. Hereinafter, various embodiments utilizing environmental information such as detected dust concentration will be described in detail.

16A, 16B, 14C, 15A, 15B, 15C, 16A, 16B, 16A, 16B, 16A, 16B, 16A, 16B, 16A, 16B, 16C, 16D, 17A, 17B, 17C, 17D, 18A, 18B, 18C, 19A and 19B show the dust information detected by the dust sensor of the mobile terminal according to the present invention It shows various UI / UX used.

10A to 13 illustrate embodiments related to a method of sharing dust information detected by a dust sensor with a third party. Here, the dust information means a dust concentration level or a detected dust concentration value.

10A is a setting screen 1001 related to transmitting detected dust information to a specific person, and 10B is a setting screen 1002 related to receiving dust information from a third party. The control unit 180 of the mobile terminal 100 according to the present invention can control the display unit 151 to display the dust information detected through the dust sensor 143 having the above-described structure. In response to receiving the sharing request signal, the control unit 180 may transmit a signal corresponding to the dust information displayed on the display unit 151 to the external terminal through the wireless communication unit 110. [

The setting for the shared sending / receiving of dust information can be turned on or off through the operation of the first item 1011 in the setting screens 1001 and 1002 of FIGS. 10A and 10B. The user can disable unnecessary sharing of data by normally disabling the shared sending / receiving of dust information. In addition, the GPS information sharing step can be set based on the touch input to the second item 1012. Here, the GPS information sharing can be divided into, for example, the first to the fourth steps. By setting the GPS information sharing step differently, personal privacy can be protected. The set GPS information sharing can be displayed in icon form 1010, 1020.

Next, third party information sharing the dust information can be confirmed through the shared send / receive list, which is the third item 1013. The user can select Add Address Book at the bottom of the third item 1013 to add a new contact to the shared send / receive list. Specifically, when the user selects Add Address Book in Fig. 10B, the contact list of the other party, which is enabled to receive the sharing of the dust information from the contacts stored in the mobile terminal, is selectably displayed. When a specific contact is selected, a popup notification for confirming whether or not the sharing request is approved is outputted to the counterpart terminal, and the shared send / receive list is updated based on the feedback response received from the counterpart. Thus, by monitoring the dust information around a specific person in real time, air quality information of various places can be confirmed more quickly and accurately.

FIGS. 11A and 11B show a condition setting screen for utilizing dust information more effectively by restricting, for example, a specific place or a specific time period, rather than sharing all the dust information detected by a specific person.

In this regard, the control unit 180 of the mobile terminal 100 according to the present invention detects the entry into the designated place using the location information detected through the location information module 111. [ In addition, the control unit 180 transmits dust information corresponding to the dust detected through the dust sensor 143 to an external terminal matching the designated contact. In other words, the condition is imposed that the dust information detected in real time is not transmitted or received in real time, but only the dust information detected in the designated place is shared. At this time, the duplicated shared information is ignored or updated based on the latest time.

The setting screen 1101 shown in FIG. 11A includes a send / receive item 1111 of dust information, sharing options 1111b and 1112b for the set places 1111a and 1112a, and a sharing target list 1111c and 1112c A shared place listing item 1112 may be displayed. Further, a place addition button 1113 may be provided at the lower end of the setting screen 1101. [ On the other hand, when the sharing option 1111b or 1112b is selected on the setting screen 1101, a numerical value for considering the data to be overlapped with the setting for the shareable environmental information (for example, VOC, discomfort index, temperature and humidity concentration, Settings can be performed. Further, it is also possible to set a collection time interval (e.g., 60 minutes) of environment information.

On the other hand, the option items displayed on the sharing option screen 1102 shown in FIG. 11B may vary depending on the type and current status of the sensors installed in the mobile terminal 100 or the terminal of the third party. If the shared data is a value within the range set on the sharing option screen 1102 of FIG. 11B, the data is regarded as redundant data and is ignored. If the data is out of the set range, the shared data is updated.

12A to 12D show an example of a setting screen and a notification screen for sharing environment information with a sharing target device connected to the same WiFi when entering a specified specific place. It is possible to share environment information with a sharing target device connected to the same Wifi or BT by a designated place (e.g., house, car, etc.) through the setting screen 1201 of FIG. 12A.

When the smart setting item is selected on the setting screen 1201 in Fig. 12A, an application (e.g., air conditioner, air purifier control application, etc.) to be automatically executed at the time of Wifi connection at home can be set through the screen 1202 in Fig. 12B . Alternatively, an application and an operation mode (e.g., navigation, A / C mode, etc.) to be automatically executed when BT is connected to the vehicle can be set as shown in screen 1203 in Fig. 12C. 12D shows an example in which the notification information 1204 is output by comparing the external environment information received through the GPS sharing information with the dust concentration measured in the room.

13 shows an example of a setting screen 1301 for sharing environmental information among a plurality of users who have set environmental information sharing in a public place (e.g., restaurant, subway, bus, public institution, etc.). As shown in the figure, the sending / receiving of environment information in a public place can be set differently, and the type of data to be shared and the update time interval can be set separately.

Hereinafter, Figs. 14A to 15C show various examples in which the shared dust concentration and / or environmental information is displayed on the display unit 151. Fig.

Specifically, a map screen displaying the first dust information corresponding to the dust detected through the dust sensor 143 of the mobile terminal 100 is displayed on the display unit 151 first. The control unit 180 controls the display unit 151 to display the second dust information received within a predetermined time from the external terminal, that is, the shared dust information at the corresponding position on the map screen. At this time, if the shared dust information is selected on the map screen, a sharing history of the second dust information received from the corresponding location may be provided.

As an example, an environment information map can be confirmed between sharers of screen information as shown in FIG. 14A. When the environment information option is selected in the environmental information map, the information of the public place in which the environmental information is shared can be confirmed on the map screen 1402 as shown in FIG. 14B. At this time, in the map screen 1402, environmental information can be displayed separately for each type of business shown in FIG. 14A, and color objects or imagery-like graphic objects (for example, 1411, 1412, 1413). For example, the place where the graphic object 1411 of a dark color is displayed may be intuitive that the dust concentration level is higher than the place where the graphic object 1412 or 1413 is displayed. Also, the graphics objects 1411, 1412, 1413 can be changed differently depending on the set time interval of the shots or as the dust concentration level is updated in real time.

When one of the displayed graphic objects 1413 is selected, a screen 1403 for confirming the shared history 1423 of the dust concentration level or environmental information shared in the place 1420 is provided as shown in FIG. 14C do.

FIGS. 15A to 15C are examples of providing real-time monitoring results of environmental information (air quality, gas, dust, etc.) that are shared when using public transportation such as subway, bus, etc. through the display unit 151. FIG. Specifically, the environment information shared by each sub-space of the subway is collected and displayed in the form of color image objects 1512 and 1513 indicating pleasant space information 1511 and air quality for each space, as shown in a screen 1501 shown in FIG. 15A. You can display it. Alternatively, as shown in the screen 1502 shown in FIG. 15B, environmental information shared by each subway exit is collected and displayed in the form of pleasant exit information 1521 and color icons 1522 and 1523 indicating air quality for each exit position have. Alternatively, a color representing the air quality may be outputted for each of the images 1531 and 1532 of the bus close to the stop, such as the screen 1503 shown in FIG. 15C. Thus, information on air quality can be visually immediately confirmed.

In another embodiment, FIGS. 16A-D illustrate examples relating to displaying detected dust information in an Always On Display (AOD) mode of operation, such as time information or weather information.

First, an address for confirming the dust concentration or a position of a specific person can be set by the AOD alarm through the setting screen 1601 shown in FIG. 16A. As a result, as shown in FIG. 16B, the dust concentration value at the position 'Kim' set to the address 'P group' and 'card 2' set to 'card 1' on the setting screen 1601 in FIG. And in the center of the screen, the dust concentration value of the place where the current terminal is located can be displayed. Also, the type and number of cards to be displayed on the AOD screen 1602 can be changed through the setting screen 1601 of FIG. 16A.

In addition, the AOD screen 1602 may display information about the air quality received through a network service such as a weather station or may be displayed as data compared with the current area.

On the other hand, an indicator in which time information is continuously displayed can be output to one area of the display unit 151. Further, the indicator may further display an image indicating the dust concentration level of the dust detected in real time through the dust sensor 143. [ FIG. 16C shows environmental information on a second screen located at the top of the display unit, and the dust concentration level can be expressed by the color of the LED light adjacent to the second screen. Alternatively, as shown in FIG. 16D, the current dust concentration level along with the time information on the edge screen located on the side of the display unit 151 may be represented by various background colors 1611, 1612, 1613 of the edge screen . At this time, if the detected dust concentration level exceeds the reference value, a notification icon 1614 similar to the event notification may be popped up.

17A to 17D show examples related to a method of providing a behavior guide according to the detected dust concentration level. First, referring to FIG. 17A, there is shown a screen for setting the type of notification to be provided when the detected dust concentration level or environmental information (e.g., hazardous gas, temperature, etc.) indicates an abnormal value.

When the reference value setting item is selected on the screen 1701 in FIG. 17A, the option screen 1702 for setting the measurement reference value differently for various environmental information (for example, VOC, unpleasantness index, temperature and humidity, / RTI > 17A, when a pop-up setting item is selected on the screen 1701 of Fig. 17A, a password setting for releasing a notice generated upon detection of an abnormal value and an addition for editing a list of specific persons to which a message of an abnormal situation is to be transmitted An option screen 1703 is provided.

If an abnormal value is detected after the setting of the additional option as described above, the abnormal value is output to the display unit 151 until a password having an anomaly value, a user's action guide, and a notification screen 1704 indicating confirmation of execution of action is input, do. At the same time, a message indicating the abnormal situation is transmitted to the designated specific person.

As another example, when a multi-cell gas sensor is added as an environmental sensor, it can be checked whether there is a gas leak by selectively measuring harmful carbon monoxide, butane, propane, etc. in the case of drinking, and a proximity sensor, a light sensor, a microphone, If it is judged that a fire has occurred through additional sensing through the fire department, it is possible to execute the automatic report reception to the nearest fire department.

18A to 19B are examples of UI / UX related to a method of recognizing and analyzing a behavior pattern of a user based on monitored environment information and log data collected in a specific section.

The control unit 180 compares the dust concentration level of the dust detected during the selected section with a predetermined reference value and outputs the environmental analysis data according to the comparison to the display unit 151 using the log data collected in the selected section .

For example, based on various touch gestures (eg, pinch in / out, flicking, double touch, touch and drag, etc.) applied to the full range screen 1801 in which the log data shown in FIG. Can be selected. 18B, when a menu 1810 of analyzing on the selected section screen 1801 'is selected, as shown in FIG. 18C, an analysis screen of log data and environmental information collected from the mobile terminal 100 during the selected section 1802).

The analysis screen 1802 is provided with environmental analysis data by location (eg, vehicle, house, company, etc.) and / or user behavior (eg sleeping environment, indoor exercise, etc.) (An abnormal numerical threshold value), setting, and the like can be further provided.

When the setting item of the additional option 1812 is selected, the setting screen 1901 shown in Fig. 19A is output. Using the output setting screen 1901, the user can set a detailed action guide for a specific place or a specific action, for example, a ventilation time.

Also, when the alarm item of the additional option 1812 is selected, an alarm setting screen 1902 is output upon detection of an abnormal numerical value of the environmental analysis data as shown in FIG. 19B. The user can use the output notification setting screen 1902 to adjust the notification method and strength to be output when an abnormal value is detected at a specific place.

As described above, according to the mobile terminal and the operation method thereof according to the embodiment of the present invention, by mounting a miniaturized dust sensor which does not need to provide a chamber for introducing air or a passage for controlling a light path , It is possible to maintain a thin thickness of the terminal product. Further, according to the straight structure of the mounted dust sensor, the hole size exposed to the outside can be considerably reduced, and a bezelless design can be realized. Even if the actual dust detection area is narrowed due to the reduction in the hole size of the dust sensor, the detection time and the detection period are adjusted first in accordance with the increase of the concentration value or the battery shortage, The dust detection area of the dust sensor can be changed. Further, the function of the proximity sensor of the terminal can be replaced through the mounted dust sensor without collision, and the detected dust information can be shared with the third party and updated in real time, so that the air quality for the searched place can be confirmed quickly and intuitively .

The present invention described above can be embodied as computer-readable codes on a medium on which a program is recorded. The computer readable medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of the computer readable medium include a hard disk drive (HDD), a solid state disk (SSD), a silicon disk drive (SDD), a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, , And may also be implemented in the form of a carrier wave (e.g., transmission over the Internet). Also, the computer may include a control unit 180 of the terminal. Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

Claims (18)

A display unit having a front window;
A terminal body on which the display unit is mounted, the terminal body having an inner frame on which holes are formed to allow light to pass through the front window; And
A light emitting unit disposed adjacent to the inner frame and emitting light through the hole and a light receiving unit irradiating dust particles in the air with the emitted laser light to generate a signal by sensing scattered light entering through the hole And a dust sensor. The method according to claim 1,
Further comprising a control unit for controlling a blinking period of the light emitting unit and detecting dust using the generated signal,
Wherein,
Wherein the size, number, and speed of the dust are determined using the width, number, and time difference of the pulse output signal generated in real time through the dust sensor. The method according to claim 1,
In the dust sensor,
Wherein the light emitting unit is installed at a position corresponding to the hole formed at the top of the front window and the inner frame, and the light passing through the hole and the front window is linearly emitted from the light emitting unit. 3. The method of claim 2,
Wherein,
Wherein the blinking period of the light emitting unit is changed according to the size, the number, and the moving speed of the dust, and the dust is detected with the detection cycle corresponding to the changed blinking cycle. 5. The method of claim 4,
Wherein,
The moving speed of the dust passing through the dust detecting section matched with the hole is calculated using the signal generated in real time and the dust detecting time is variably applied according to the calculated moving speed of the dust to detect the dust within the extended reference range And detects the mobile terminal. 6. The method of claim 5,
Wherein,
And controls the blinking period of the light emitting unit to be slow as the dust detection time matching the calculated moving speed of the dust increases. The method according to claim 6,
Wherein,
Determines a dust concentration level corresponding to the detected dust, and changes the dust detection time such that the extended reference range is changed according to the determined dust concentration level. 8. The method of claim 7,
Wherein,
And increases the dust detection time such that the extended reference range increases as the determined dust concentration level increases. 3. The method of claim 2,
Wherein,
Wherein the control unit detects the entry of a predetermined operation mode while detecting the dust through the dust sensor and controls the proximity of the object through the dust sensor in the predetermined operation mode. 3. The method of claim 2,
Wherein,
And to perform a second operation for detecting proximity of an object through the dust sensor in response to a detection state of dust exceeding a critical size. 11. The method of claim 10,
Wherein,
Wherein the controller controls to perform a first operation to stop the second operation and to detect dust through the dust sensor in response to the detection state being no longer detected or a predetermined time has elapsed . 3. The method of claim 2,
The terminal body further includes a light intensity sensor for detecting a low light level state,
Wherein,
And switches to an operation mode for detecting proximity of an object through the dust sensor in response to detection of a low-illuminance state below a threshold value while detecting dust through the dust sensor. 3. The method of claim 2,
And a wireless communication unit for transmitting a wireless signal,
Wherein,
Displaying dust information corresponding to the detected dust on the display unit,
And transmits a signal corresponding to the displayed dust information to the external terminal through the wireless communication unit in response to the sharing request signal. 14. The method of claim 13,
Wherein the wireless communication unit includes a location information module for detecting location information of the terminal main body,
Wherein,
And transmits the dust information corresponding to the dust detected through the dust sensor to an external terminal matched with the designated contact when detecting the entry into the designated place using the detected location information. . 3. The method of claim 2,
A map screen displaying first dust information corresponding to the dust detected through the dust sensor is displayed on the display unit,
Wherein,
Controlling the display unit to display second dust information received from an external terminal within a predetermined time at a corresponding position on the map screen,
And when the second dust information is selected, a sharing history of the second dust information received from the corresponding position is output to the display unit. 16. The method of claim 15,
Wherein the graphical object representing the dust concentration level corresponding to the first and second dust information is displayed on the map screen, and the graphical object is changed in real time as the dust concentration level is updated. The method according to claim 1,
Wherein an indicator for continuously displaying time information is output to one area of the display unit and an image indicating dust concentration level of dust detected in real time through the dust sensor is further displayed on the indicator. 3. The method of claim 2,
Wherein,
Compares the dust concentration level of the dust detected during the selected section with a predetermined reference value, and outputs the environmental analysis data according to the comparison to the display section using the log data collected in the corresponding section.

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