WO2020230927A1

WO2020230927A1 - Wearable device and control method therefor

Info

Publication number: WO2020230927A1
Application number: PCT/KR2019/005843
Authority: WO
Inventors: 장승진; 전찬훈
Original assignee: 엘지전자 주식회사
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-11-19

Abstract

The present invention relates to a wearable device and a control method therefor, and the purpose of the present invention is to perform control so that a sensing unit senses a user behavior for a predetermined time, generate first user behavior information on the basis of the sensed user behavior, set a fall detection sensitivity to be different according to the generated first user behavior information, perform control so that the sensing unit senses the user behavior at each predetermined period, generate second user behavior information on the basis of the sensed user behavior, and determine, on the basis of the generated second user behavior information, whether to adjust the fall detection sensitivity.

Description

Wearable device and its control method

The present invention relates to a wearable device and a method of controlling the same, and more specifically, a wearable device capable of minimizing false detection by generating user behavior information by analyzing user behavior, and setting a fall detection sensitivity differently according to user behavior information And a control method thereof.

With the recent development of IT technology, wearable devices are emerging as a big issue in everyday life. In particular, wearable devices are used as communication tools that perform essential functions in everyday life in connection with various applications.

Statistically, approximately one-third of the elderly over 65 years of age in the United States each year suffer falls, and in Korea, 21% of all elderly people experience falls within the last year. Because of this, 75.7% of the elderly are usually afraid of falls. In the US alone, there is a report that about 30 trillion won was spent on medical expenses related to falls as of 2010. When a fall occurs, hip and hip fractures are reported as the most serious injuries caused by a fall, and in 2010 alone, 260,000 people in the United States have become a social problem enough to be hospitalized.

In addition, in the UK, 60% of falls of seniors aged 65 and over are treated in hospitals, which is about 10% of all emergency ambulance services. In addition, idiopathic/sporadic Parkinson's disease is the second most common neurodegenerative disease after Alzheimer's disease, and about 60,000 new patients are diagnosed every year in the United States, and there are 1.5 million cumulative patients, and their fall rate is 68.3%. It is very high compared to about 30% of the general elderly fall. In particular, the more elderly people are, the more likely they are to be in an emergency situation, and because it is difficult to take appropriate measures for the emergency situation on their own, it is likely to lead to personal injury.

However, in the case of the prior art, a fall detection algorithm is mounted and an emergency call service is provided to the user. However, an erroneous emergency call occurs due to false detection, which makes it inconvenient for the user to use it.

An embodiment of the present invention is a wearable device that senses a user's behavior, sets the fall detection sensitivity differently according to the user behavior information, and periodically generates the user behavior again, and adjusts the fall detection sensitivity based on the user behavior information. And to provide a control method thereof.

Another embodiment of the present invention recognizes that the user is a Parkinson's disease patient based on the user's hand shake, periodically monitors the user's hand shake pattern, and when a fall occurs, a standard corresponding to the fall detection sensitivity is generalized. An object of the present invention is to provide a wearable device capable of detecting a fall of a Parkinson's disease patient by setting differently from the mode and a control method thereof.

Another embodiment of the present invention provides a wearable device and a control method for setting a fall detection sensitivity based on a user's walking speed, and adjusting an impulse amount and a static period corresponding to the fall detection sensitivity as the walking speed changes. It aims to provide.

The technical problem to be achieved in the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. .

According to an embodiment of the present invention, a wearable device includes: a sensing unit for sensing a user behavior; A communication unit for transmitting and receiving data with an external device connected to the wearable device; Controls the sensing unit to sense the user behavior for a predetermined time, generates first user behavior information based on the sensed user behavior, sets a fall detection sensitivity differently according to the generated first user behavior information, and Controls the sensing unit to sense user behavior at predetermined intervals, generates second user behavior information based on the sensed user behavior, and determines whether to adjust the fall detection sensitivity based on the generated second user behavior information It includes a control unit.

According to another embodiment of the present invention, a method of controlling a wearable device includes: controlling a sensing unit to sense a user action for a predetermined time; Generating first user behavior information based on the sensed user behavior; Setting a fall detection sensitivity differently according to the generated first user behavior information; Controlling the sensing unit to sense a user action at a predetermined periodic interval; Generating second user behavior information based on the sensed user behavior; And determining whether to adjust the fall detection sensitivity based on the generated second user behavior information.

According to an embodiment of the present invention, by sensing a user behavior, setting the fall detection sensitivity differently according to the user behavior information, and periodically generating the user behavior again, adjusting the fall detection sensitivity based on the user behavior information, As it can reduce the occurrence of false fall detection, user convenience can be improved.

According to another embodiment of the present invention, based on the user's hand shake, the user is identified as a Parkinson's disease patient, periodically monitors the user's hand shake pattern, and when a fall occurs, a criterion corresponding to the fall detection sensitivity is determined. By setting differently from the normal mode, it is possible to detect a fall even when the user is a Parkinson's disease patient, so user convenience can be improved.

According to another embodiment of the present invention, the fall detection sensitivity is set based on the user's walking speed, and as the walking speed changes, the amount of impulse corresponding to the fall detection sensitivity and the static period are adjusted to reduce the occurrence of false fall detection. It can improve user convenience.

The effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those of ordinary skill in the art from the following description. will be.

1A is a block diagram illustrating a mobile terminal related to the present invention.

1B and 1C are conceptual diagrams of an example of a mobile terminal according to the present invention viewed from different directions.

2 is a conceptual diagram illustrating another example of a deformable mobile terminal according to the present invention.

3 is a perspective view showing an example of a watch type mobile terminal related to another embodiment of the present invention.

4 is a perspective view illustrating an example of a glass-type mobile terminal related to another embodiment of the present invention.

5 is a configuration diagram of a wearable device according to an embodiment of the present invention.

6 is a diagram illustrating a hardware and software configuration of a wearable device according to an exemplary embodiment of the present invention.

7 is a flowchart of a method of controlling a wearable device according to an embodiment of the present invention.

8 is a diagram illustrating that a malfunction occurs in the prior art according to an embodiment of the present invention.

9 is a diagram illustrating prevention of occurrence of false fall detection using a wear detection sensor according to an embodiment of the present invention.

10 is a diagram illustrating a fall occurrence event and an acceleration magnitude analysis by time according to an embodiment of the present invention.

11 is a diagram illustrating a fall occurrence probability for each walking speed group according to an embodiment of the present invention.

12 is a diagram illustrating types of user behavior information for setting a fall detection sensitivity according to an embodiment of the present invention.

13 is a flowchart illustrating a method of controlling a wearable device according to an embodiment of the present invention.

14 is a diagram illustrating adjustment of a fall detection sensitivity when a user is a hand tremor patient according to an embodiment of the present invention.

15 is a flowchart illustrating a method of controlling a wearable device when a user is a hand tremor patient according to an embodiment of the present invention.

16 is a diagram illustrating an acceleration signal during a static period when a user is a hand tremor patient according to an embodiment of the present invention.

17 is a diagram illustrating a case where a user is a Parkinson's disease patient according to an embodiment of the present invention.

18 is a diagram illustrating a type of hand tremor in case of Parkinson's disease patient according to an embodiment of the present invention.

19 is a diagram illustrating a hand shaking pattern of a hand shaking patient according to an embodiment of the present invention.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves.

In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description will be omitted.

In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all modifications included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Mobile terminals described in this specification include mobile phones, smart phones, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), navigation systems, and slate PCs. , Tablet PC (tablet PC), ultrabook (ultrabook), wearable device (wearable device, for example, smartwatch, glass-type terminal (smart glass), HMD (head mounted display)), etc. may be included. have.

However, it will be readily apparent to those skilled in the art that the configuration according to the embodiment described in the present specification may also be applied to fixed terminals such as digital TVs, desktop computers, and digital signage, except when applicable only to mobile terminals. will be.

1A to 1C, FIG. 1A is a block diagram illustrating a mobile terminal related to the present invention, and FIGS. 1B and 1C are conceptual diagrams of an example of a mobile terminal related to the present invention viewed from different directions.

The mobile 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, and a power supply unit 190. ), etc. The components shown in FIG. 1A are not essential for implementing the mobile terminal, and thus, the mobile terminal described in the present specification may have more or fewer components than those listed above.

More specifically, among the components, the wireless communication unit 110 may be configured between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 and an external server. It may include one or more modules that enable wireless communication between. In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

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

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

The sensing unit 140 may include one or more sensors for sensing at least one of information in the mobile terminal, information on surrounding environments surrounding the mobile terminal, and user information. For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor (ultrasonic sensor) , Optical sensor (for example, camera (see 121)), microphone (microphone, see 122), battery gauge, environmental sensor (for example, barometer, hygrometer, thermometer, radiation detection sensor, It may include at least one of a heat sensor, a gas sensor, etc.), and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of the display unit 151, the sound output unit 152, the hap tip module 153, and the light output unit 154 can do. The display unit 151 may implement a touch screen by forming a layer structure or integrally with the touch sensor. Such a touch screen can function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user, and can provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a passage between various types of external devices connected to the mobile terminal 100. The interface unit 160 connects a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and a device equipped with an identification module. It may include at least one of a port, an audio input/output (I/O) port, an input/output (video I/O) port, and an earphone port. The mobile terminal 100 may perform appropriate control related to the connected external device in response to the connection of the external device to the interface unit 160.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications driven by the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of delivery for basic functions of the mobile terminal 100 (eg, incoming calls, outgoing functions, message reception, and outgoing functions). Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and driven by the controller 180 to perform an operation (or function) of the mobile terminal.

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the mobile terminal 100. The controller 180 may provide or process appropriate information or functions to a user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

Also, in order to drive an application program stored in the memory 170, the controller 180 may control at least some of the components examined together with FIG. 1A. Furthermore, in order to drive the application program, the controller 180 may operate by combining at least two or more of the components included in the mobile terminal 100 with each other.

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

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

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

First, referring to the wireless communication unit 110, the broadcast reception module 111 of the wireless communication unit 110 receives a broadcast signal 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. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching of at least two broadcast channels.

The broadcast management server may mean a server that generates and transmits a broadcast signal and/or broadcast-related information, or a server that receives and transmits a previously-generated broadcast signal and/or broadcast-related information to a terminal. The broadcast signal may include not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal in a form in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast signal may be encoded according to at least one of technical standards (or a broadcast method, for example, ISO, IEC, DVB, ATSC, etc.) for transmission and reception of digital broadcast signals, and the broadcast reception module 111 The digital broadcast signal can be received using a method suitable for the technical standards set by technical standards.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may exist in various forms, such as an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or an Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H). The broadcast signal and/or broadcast related information received through the broadcast reception module 111 may be stored in the memory 160.

The mobile communication module 112 includes technical standards or communication methods for mobile communication (eg, GSM (Global System for Mobile communication), CDMA (Code Division Multi Access), CDMA2000 (Code Division Multi Access 2000)), EV -DO (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), WCDMA (Wideband CDMA), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc.), transmits and receives radio signals with at least one of a base station, an external terminal, and a server on a mobile communication network.

The wireless signal may include a voice call signal, a video call signal, or various types of data according to transmission/reception of text/multimedia messages.

The wireless Internet module 113 refers to a module for wireless Internet access, and may be built-in or external to the mobile terminal 100. The wireless Internet module 113 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

Examples of wireless Internet technologies include WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc., and the wireless Internet module ( 113) transmits and receives data according to at least one wireless Internet technology in a range including Internet technologies not listed above.

From the point of view that wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless Internet module 113 performs wireless Internet access through the mobile communication network. ) 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), ZigBee, and NFC (Near NFC). Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless Universal Serial Bus (USB) technologies may be used to support short-range communication. , Between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 and another mobile terminal 100, or through a wireless area network (Wireless Area Networks) An external server) may support wireless communication between networks in which the local area wireless communication network is located, which may be a wireless personal area network.

Here, the other mobile terminal 100 is a wearable device capable of exchanging (or interlocking with) data with the mobile terminal 100 according to the present invention, for example, a smartwatch, a smart glasses. (smart glass), HMD (head mounted display)). The short-range communication module 114 may detect (or recognize) a wearable device capable of communicating with the mobile terminal 100 around the mobile terminal 100. Furthermore, when the sensed wearable device is a device that is authenticated to communicate with the mobile terminal 100 according to the present invention, the controller 180 transmits at least part of the data processed by the mobile terminal 100 to the short-range communication module ( 114) can be transmitted to the wearable device. Accordingly, a user of the wearable device can use data processed by the mobile terminal 100 through the wearable device. For example, according to this, when a call is received by the mobile terminal 100, the user performs a phone call through the wearable device, or when a message is received by the mobile terminal 100, the user receives the received call through the wearable device. It is possible to check the message.

The location information module 115 is a module for obtaining a location (or current location) of a mobile terminal, and representative examples thereof include a GPS (Global Positioning System) module or a WiFi (Wireless Fidelity) module. For example, if the mobile terminal utilizes the GPS module, it can acquire the location of the mobile terminal by using a signal transmitted from a GPS satellite. As another example, if the mobile terminal utilizes the Wi-Fi module, the mobile terminal may acquire the location of the mobile terminal based on information of the Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 115 may perform any function among other modules of the wireless communication unit 110 in order to obtain data on the location of the mobile terminal as a substitute or additionally. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

Next, 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, the mobile terminal 100 Alternatively, a plurality of cameras 121 may be provided. The camera 121 processes an image frame such as a still image or a video obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. On the other hand, a plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the camera 121 forming a matrix structure as described above, various angles or focal points are applied to the mobile terminal 100. A plurality of image information may be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to obtain a left image and a right image for implementing a stereoscopic image.

The microphone 122 processes an external sound signal into electrical voice data. The processed voice data may be variously utilized according to a function (or an application program being executed) being executed by the mobile terminal 100. Meanwhile, the microphone 122 may be implemented with various noise removal algorithms for removing noise generated in a process of receiving an external sound signal.

The user input unit 123 is for receiving information from the user, and when information is input through the user input unit 123, the controller 180 can control the operation of the mobile terminal 100 to correspond to the input information. . Such, the user input unit 123 is a mechanical (mechanical) input means (or a mechanical key, for example, a button located on the front, rear or side of the mobile terminal 100, a dome switch (dome switch), a jog wheel, Jog switch, etc.) and a touch-type input means. As an example, the touch-type input means comprises a virtual key, a soft key, or a visual key displayed on a touch screen through software processing, or a portion other than the touch screen On the other hand, the virtual key or the visual key may be made of a touch key disposed on the touch screen, while having various forms, and may be displayed on the touch screen, for example, graphic, text ), icon, video, or a combination thereof.

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

First, the proximity sensor 141 refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object existing in the vicinity using the force of an electromagnetic field or infrared rays without mechanical contact. In the proximity sensor 141, the proximity sensor 141 may be disposed in an inner area of the mobile terminal surrounded by the touch screen as described above or near the touch screen.

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 type proximity sensor, a magnetic type proximity sensor, an infrared proximity sensor, and the like. When the touch screen is a capacitive type, the proximity sensor 141 may be configured to detect the proximity of the object by a change in the electric field according to the proximity of the conductive object. 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 action of allowing an object to be recognized as being positioned on the touch screen by being approached without contacting an object on the touch screen is called "proximity touch", and the touch The act of actually touching an object on the screen is referred to as "contact touch". A position at which an object is touched in proximity on the touch screen means a position at which the object is vertically corresponding to the touch screen when the object is touched in proximity. The proximity sensor 141 may detect a proximity touch and a proximity touch pattern (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.). have. Meanwhile, as above, the controller 180 processes data (or information) corresponding to the proximity touch operation and the proximity touch pattern sensed through the proximity sensor 141, and further, provides visual information corresponding to the processed data. It can be output on the touch screen. Furthermore, the controller 180 may control the mobile terminal 100 to process different operations or data (or information) according to whether a touch to the same point on the touch screen is a proximity touch or a touch touch. .

The touch sensor applies a touch (or touch input) to the touch screen (or display unit 151) using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method. To detect.

As an example, the touch sensor may be configured to convert a pressure applied to a specific portion of the touch screen or a change in capacitance generated at a specific portion of the touch screen into an electrical input signal. The touch sensor may be configured to detect a location, an area, a pressure upon touch, a capacitance upon touch, and the like at which a touch object applying a touch on the touch screen is touched on the touch sensor. Here, the touch object is an object that applies a touch to the touch sensor, and may be, for example, a finger, a touch pen, a stylus pen, or a pointer.

In this way, when there is a touch input to the touch sensor, the signal(s) corresponding thereto is transmitted to the touch controller. The touch controller processes the signal(s) and then transmits the corresponding data to the controller 180. As a result, the controller 180 can know whether an area of the display unit 151 is touched. Here, the touch controller may be a separate component from the controller 180 or may be the controller 180 itself.

Meanwhile, the controller 180 may perform different controls or perform the same control according to the type of the touch object by touching the touch screen (or a touch key provided in addition to the touch screen). Whether to perform different controls or to perform the same control according to the type of the touch object may be determined according to an operating state of the mobile terminal 100 or an application program being executed.

Meanwhile, the touch sensor and the proximity sensor described above are independently or in combination, and a short (or tap) touch, a long touch, a multi touch, and a drag touch on the touch screen. ), flick touch, pinch-in touch, pinch-out touch, swipe touch, hovering touch, etc. You can sense the touch.

The ultrasonic sensor may recognize location information of a sensing target by using ultrasonic waves. Meanwhile, the controller 180 may calculate the location of the wave generator through information sensed from the optical sensor and the plurality of ultrasonic sensors. The location of the wave generator may be calculated by using a property that the light is much faster than the ultrasonic wave, that is, the time that the light reaches the optical sensor is much faster than the time that the ultrasonic wave reaches the ultrasonic sensor. More specifically, the position of the wave generator may be calculated using a time difference between a time when the ultrasonic wave arrives using light as a reference signal.

On the other hand, the camera 121, viewed as the configuration of the input unit 120, includes at least one of a camera sensor (eg, CCD, CMOS, etc.), a photo sensor (or image sensor), and a laser sensor.

The camera 121 and the laser sensor may be combined with each other to detect a touch of a sensing target for a 3D stereoscopic image. The photosensor may be stacked on the display device, and the photosensor is configured to scan a motion of a sensing object close to the touch screen. More specifically, the photo sensor scans the contents placed on the photo sensor by mounting a photo diode and a transistor (TR) in a row/column and using an electrical signal that changes according to the amount of light applied to the photo diode. That is, the photosensor calculates the coordinates of the sensing target according to the amount of light change, and through this, the location information of the sensing target may be obtained.

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

In addition, the display unit 151 may be configured as a three-dimensional display unit that displays a three-dimensional image.

A three-dimensional display method such as a stereoscopic method (glasses method), an auto stereoscopic method (no glasses method), and a projection method (holographic method) may be applied to the stereoscopic display unit.

In general, a 3D stereoscopic image is composed of a left image (an image for the left eye) and a right image (an image for the right eye). Depending on how the left and right images are combined into a 3D stereoscopic image, a top-down method in which left and right images are arranged up and down in one frame, and left and right images are left and right within one frame. L-to-R (left-to-right, side by side) method, a checker board method in which pieces of left and right images are arranged in a tile form, and left and right images are arranged in columns Alternatively, it is divided into an interlaced method in which the image is alternately arranged in row units, and a time sequential (frame by frame) method in which the left image and the right image are alternately displayed by time.

In addition, the 3D thumbnail image may generate a left image thumbnail and a right image thumbnail from the left image and the right image of the original image frame, respectively, and may be generated as one image as they are combined. In general, a thumbnail refers to a reduced image or a reduced still image. The left image thumbnail and the right image thumbnail generated in this way are displayed with a left and right distance difference on the screen as much as a depth corresponding to the parallax between the left image and the right image, thereby representing a three-dimensional sense of space.

The left image and the right image required for realizing the 3D stereoscopic image may be displayed on the stereoscopic display unit by the stereoscopic processing unit. The 3D processing unit receives a 3D image (an image at a reference point of view and an image at an extended point of view) and sets a left image and a right image therefrom, or receives a 2D image and converts it into a left image and a right image.

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, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output unit 152 also outputs sound signals related to functions (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output unit 152 may include a receiver, a speaker, and a buzzer.

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

In addition to vibration, the haptic module 153 is used for stimulation such as an arrangement of pins that move vertically with respect to the contact skin surface, blowing force or suction force of air through the injection or inlet, grazing against the skin surface, contact of electrodes, and electrostatic force. It can generate various tactile effects, such as the effect by the effect and the effect by reproducing the feeling of cooling and warming using an endothermic or heat generating element.

The haptic module 153 may not only deliver a tactile effect through direct contact, but may also be implemented so that a user can feel the tactile effect through muscle sensations such as a finger or an arm. Two or more haptic modules 153 may be provided depending on the configuration aspect of the mobile terminal 100.

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

The signal output from the light output unit 154 is implemented as the mobile terminal emits a single color or multiple colors of light to the front or rear. The signal output may be terminated when the mobile terminal detects the user's event confirmation.

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

Meanwhile, the identification module is a chip that stores various types of information for authenticating the right to use the mobile terminal 100, and includes a user identification module (UIM), a subscriber identity module (SIM), and universal user authentication. It may include a module (universal subscriber identity module; USIM). A device equipped with an identification module (hereinafter,'identification device') may be manufactured in the form of a smart card. Accordingly, the identification device may be connected to the terminal 100 through the interface unit 160.

In addition, the interface unit 160 serves as a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or is input from the cradle by a user. It may be a path through which various command signals are transmitted to the mobile terminal 100. Various command signals or the power input from the cradle may be operated as signals for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The memory 170 may store a program for the operation of the controller 180 and may temporarily store input/output data (eg, a phone book, a message, a still image, a video, etc.). The memory 170 may store data on vibrations and sounds of various patterns output when a touch input on the touch screen is performed.

The memory 170 is a flash memory type, a hard disk type, a solid state disk type, an SDD 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 (EEPROM) -only memory), programmable read-only memory (PROM), magnetic memory, magnetic disk, and optical disk. The mobile terminal 100 may be operated in connection with a web storage that performs a storage function of the memory 170 over the Internet.

Meanwhile, as described above, the controller 180 controls an operation related to an application program and, in general, an overall operation of the mobile terminal 100. For example, when the state of the mobile terminal satisfies a set condition, the controller 180 may execute or release a lock state limiting input of a user's control command for applications.

In addition, the controller 180 performs control and processing related to voice calls, data communication, video calls, etc., or performs pattern recognition processing capable of recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively. I can. Furthermore, in order to implement various embodiments described below on the mobile terminal 100 according to the present invention, the controller 180 may control any one or a combination of a plurality of components described above.

The power supply unit 190 receives external power and internal power under the control of the controller 180 to supply power necessary for the operation of each component. The power supply unit 190 includes a battery, and the battery may be a built-in battery configured to be rechargeable, and may be detachably coupled to a terminal body for charging or the like.

Further, the power supply unit 190 may include a connection port, and the connection port may be configured as an example of an interface 160 to which an external charger supplying power for charging a 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 uses at least one of an inductive coupling method based on a magnetic induction phenomenon or a magnetic resonance coupling method based on an electromagnetic resonance phenomenon from an external wireless power transmitter. Power can be delivered.

Meanwhile, hereinafter, various embodiments may be implemented in a recording medium that can be read by a computer or a similar device using, for example, software, hardware, or a combination thereof.

1B and 1C, the disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and may be applied to various structures such as a watch type, a clip type, a glass type, or a folder type in which two or more bodies are relatively movably coupled, a flip type, a slide type, a swing type, and a swivel type. . Although it will relate to a specific type of mobile terminal, the description of a specific type of mobile terminal may be generally applied to other types of mobile terminals.

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

The mobile terminal 100 includes a case (for example, a frame, a housing, a cover, etc.) forming an exterior. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in an 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 the front of the terminal body to output information. As illustrated, the window 151a of the display unit 151 may be mounted on the front case 101 to form the front surface of the terminal body together with the front case 101.

In some cases, electronic components may be mounted on the rear case 102 as well. Electronic components that can be mounted on the rear case 102 include a removable battery, an identification module, and a memory card. In this case, a rear cover 103 for covering the mounted electronic component may be detachably coupled to the rear case 102. Accordingly, when the rear cover 103 is separated from the rear case 102, the electronic components 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 part of the side surface of the rear case 102 may be exposed. In some cases, when the rear case 102 is combined, the rear case 102 may be completely covered by the rear cover 103. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b or the sound output unit 152b to the outside.

These

cases

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

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

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) that prevents water from permeating into the terminal body. For example, the waterproof unit 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 the combination thereof It may include a waterproof member for sealing the inner space.

The mobile terminal 100 includes a display unit 151, first and second

sound output units

152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, and first and second sound output units. Cameras 121a and 121b, first and

second operation units

123a and 123b, microphone 122, interface unit 160, and the like may be provided.

In the following, as shown in FIGS. 1B and 1C, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, and a light output unit ( 154), a first camera 121a and a first operation unit 123a are disposed, a second operation unit 123b, a microphone 122, and an interface unit 160 are disposed on the side of the terminal body, and the terminal body The mobile terminal 100 in which the second sound output unit 152b and the second camera 121b are disposed on the rear surface of will be described as an example.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as necessary, or may be disposed on different sides. 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 of the terminal body rather than on the rear surface of the terminal body.

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

In addition, two or more display units 151 may exist depending on the implementation type of the mobile terminal 100. In this case, the mobile terminal 100 may have a plurality of display units spaced apart or integrally disposed on one surface, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 may be configured to generate a control command corresponding to the touch based on this. Content input by the touch method may be letters or numbers, or menu items that can be indicated or designated in various modes.

On the other hand, the touch sensor is configured in the form of a film having a touch pattern and is disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or a metal wire patterned directly on the rear surface of the window 151a. May be. Alternatively, the touch sensor may be integrally formed with the display. For example, the touch sensor may be disposed on a substrate of the display or may be provided inside the display.

As such, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may 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 manipulation unit 123a.

The first sound output unit 152a may be implemented as a receiver that transmits a call sound to the user's ear, and the second sound output unit 152b is a loud speaker that outputs various alarm sounds or multimedia playback sounds. ) Can be implemented.

A sound hole for emitting sound generated from the first sound output unit 152a may be formed in the window 151a of the display unit 151. However, the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between structures (eg, a gap between the window 151a and the front case 101). In this case, the externally formed hole for sound output is not visible or hidden, so that the appearance of the mobile terminal 100 may be more simple.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event include message reception, call signal reception, missed call, alarm, schedule notification, e-mail reception, and information reception through an application. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to terminate the light output.

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

The first and

second manipulation units

123a and 123b are an example of a user input unit 123 that is manipulated to receive a command for controlling the operation of the mobile terminal 100, and may also be collectively referred to as a manipulating portion. have. The first and

second operation units

123a and 123b may be employed in any manner as long as the user operates while receiving a tactile feeling such as touch, push, and scroll. In addition, the first and

second manipulation units

123a and 123b may also be employed in a manner in which the first and

second manipulation units

123a and 123b are operated without a user's tactile feeling through proximity touch, hovering touch, or the like.

In this drawing, the first manipulation unit 123a is illustrated as being a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a push key (mechanical key) or may be configured as a combination of a touch key and a push key.

Contents input by the first and

second manipulation units

123a and 123b may be variously set. For example, the first operation unit 123a receives commands such as menu, home key, cancel, search, etc., and the second operation unit 123b is output from the first or second

sound output units

152a, 152b. Commands such as adjusting the volume of sound and switching to the touch recognition mode of the display unit 151 may be input.

Meanwhile, as another example of the user input unit 123, a rear input unit (not shown) may be provided on the rear surface of the terminal body. This rear input unit is manipulated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on/off, start, end, scroll, etc., control the volume of sound output from the first and second

sound output units

152a and 152b, and touch recognition mode of the display unit 151 You can receive commands such as conversion of. The rear input unit may be implemented in a form capable of inputting by a touch input, a push input, or a combination thereof.

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

When the rear input unit is provided on the rear surface of the terminal body, a new type of user interface can be implemented using the rear input unit. In addition, when the touch screen or the rear input unit described above replaces at least some functions of the first operation unit 123a provided on the front of the terminal body, and the first operation unit 123a is not disposed on the front of the terminal body, The display unit 151 may be configured with a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an 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 a user's voice and other sounds. The microphone 122 may be provided in a plurality of locations and configured to receive stereo sound.

The interface unit 160 becomes a passage through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with other devices (eg, earphones, external speakers), a port for short-range communication (eg, an infrared port (IrDA Port), a Bluetooth port (Bluetooth Port), a wireless LAN port, etc.], or at least one of a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented in the form of a socket for accommodating an external card such as a subscriber identification module (SIM) or a user identity module (UIM), or a memory card for storing information.

A second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction 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 format. Such a camera may be referred to as an'array camera'. When the second camera 121b is configured as an array camera, an image may be photographed in various ways using a plurality of lenses, and an image of better quality may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 illuminates light toward the subject when photographing the subject with the second camera 121b.

A second sound output unit 152b may be additionally disposed on 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 to implement a speakerphone mode during a call.

At least one antenna for wireless communication may be provided in the terminal body. The antenna may be embedded in the terminal body or may be formed in a case. For example, an antenna forming a part of the broadcast receiving module 111 (refer to FIG. 1A) may be configured to be retractable from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

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 enable wireless charging through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

On the other hand, in this drawing, the rear cover 103 is coupled to the rear case 102 so as to cover the battery 191 to limit the separation of the battery 191, and to protect the battery 191 from external shock and foreign substances. It is illustrated. When the battery 191 is configured to be detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

An accessory that protects the exterior of the mobile terminal 100 or assists or expands the function of the mobile terminal 100 may be added to the mobile terminal 100. An example of such an accessory may be a cover or a pouch that covers or accommodates at least one surface of the mobile terminal 100. The cover or pouch may be configured to interlock with the display unit 151 to expand functions of the mobile terminal 100. Another example of an accessory may be a touch pen for assisting or extending a touch input to a touch screen.

Meanwhile, in the present invention, information processed by a mobile terminal can be displayed using a flexible display. Hereinafter, based on the accompanying drawings, this will be described in more detail.

2 is a conceptual diagram illustrating another example of a deformable mobile terminal 200 according to the present invention.

As shown, the display unit 251 may be configured to be deformable by an external force. The deformation may be at least one of bending, bending, folding, twisting, and curling of the display unit 251. Such a deformable display unit 251 may be referred to as a'flexible display unit'. Here, the flexible display unit 251 may include all of a general flexible display, an e-paper, and a combination thereof. In general, the mobile terminal 200 may include features of the mobile terminal 100 of FIGS. 1A to 1C or similar features.

A general flexible display refers to a light and sturdy display that is not easily broken because it is manufactured on a thin and flexible substrate that can be bent, bent, folded, twisted or rolled like paper while maintaining the characteristics of a conventional flat panel display.

In addition, electronic paper is a display technology to which the characteristics of general ink are applied, and the point of using reflected light may be different from the conventional flat panel display. Electronic paper can change information using a twist ball or electrophoresis using a capsule.

In a state in which the flexible display unit 251 is not deformed (eg, a state having an infinite radius of curvature, hereinafter referred to as a first state), the display area of the flexible display unit 251 becomes a flat surface. In a state deformed by an external force in the first state (eg, a state having a finite radius of curvature, hereinafter referred to as a second state), the display area may be a curved surface. As shown, information displayed in the second state may be visual information output on a curved surface. This visual information is implemented by independently controlling light emission of sub-pixels arranged in a matrix form. The unit pixel means a minimum unit for implementing one color.

In the first state, the flexible display unit 251 may be placed in a curved state (eg, a vertically or horizontally curved state) rather than a flat state. In this case, when an external force is applied to the flexible display unit 251, the flexible display unit 251 may be deformed into a flat state (or a less curved state) or a more curved state.

Meanwhile, the flexible display unit 251 may be combined with a touch sensor to implement a flexible touch screen. When a touch is made to the flexible touch screen, the controller 180 (refer to FIG. 1A) may perform a control corresponding to such a touch input. The flexible touch screen may be configured to sense a touch input not only in the first state but also in the second state.

Meanwhile, the mobile terminal 200 according to the present modified example may be provided with a deformation detecting means capable of detecting deformation of the flexible display unit 251. Such deformation detecting means may be included in the sensing unit 140 (see FIG. 1A).

The deformation detecting means may be provided in the flexible display unit 251 or the case 201 and may detect information related to deformation of the flexible display unit 251. Here, the information related to the deformation may include a direction in which the flexible display unit 251 is deformed, a deformed degree, a deformed position, a deformed time, and an acceleration at which the deformed flexible display unit 251 is restored, and the like, In addition, it may be various pieces of information that can be detected due to the bending of the flexible display unit 251.

In addition, the controller 180 may change information displayed on the flexible display unit 251 or change the information displayed on the flexible display unit 251 based on information related to the deformation of the flexible display unit 251 detected by the deformation detecting means. It is possible to generate a control signal to control the function of.

Meanwhile, the mobile terminal 200 according to the present modified example may include a case 201 accommodating the flexible display unit 251. The case 201 may be configured to be deformable together with the flexible display unit 251 by an external force in consideration of the characteristics of the flexible display unit 251.

In addition, a battery (not shown) provided in the mobile terminal 200 may also be configured to be deformable together with the flexible display unit 251 by an external force in consideration of the characteristics of the flexible display unit 251. In order to implement the battery, a stack and folding method in which battery cells are stacked on top may be applied.

The state transformation of the flexible display unit 251 is not limited to being caused by an external force. For example, when the flexible display unit 251 has the first state, it may be transformed into the second state by a command of a user or an application.

On the other hand, the mobile terminal can be extended to a wearable device that can be worn on the body beyond the dimension that the user mainly holds and uses in the hand. Such wearable devices include smart watch, smart glass, and head mounted display (HMD). Hereinafter, examples of mobile terminals extended to wearable devices will be described.

The wearable device may be configured to exchange (or interlock) data with another mobile terminal 100. The short-range communication module 114 may detect (or recognize) a wearable device capable of communicating around the mobile terminal 100. Furthermore, when the detected wearable device is a device that is authenticated to communicate with the mobile terminal 100, the controller 180 transmits at least part of the data processed by the mobile terminal 100 to the wearable device through the short-range communication module 114. Can be transferred to. Accordingly, the user can use data processed by the mobile terminal 100 through the wearable device. For example, when a call is received from the mobile terminal 100, it is possible to perform a phone call through the wearable device, or when a message is received by the mobile terminal 100, the received message may be checked through the wearable device. .

3 is a perspective view showing an example of a watch type mobile terminal 300 related to another embodiment of the present invention.

Referring to FIG. 3, a watch-type mobile terminal 300 includes a main body 301 having a display unit 351 and a band 302 connected to the main body 301 and configured to be worn on a wrist. In general, the mobile terminal 300 may include features of the mobile terminal 100 of FIGS. 1A to 1C or similar features.

The main body 301 includes a case forming an exterior. As illustrated, the case may include a first case 301a and a second case 301b providing an inner space for accommodating various electronic components. However, the present invention is not limited thereto, and a single case may be configured to provide the inner space so that the unibody mobile terminal 300 may be implemented.

The watch-type mobile terminal 300 is configured to enable wireless communication, and an antenna for the wireless communication may be installed in the main body 301. On the other hand, the antenna can extend its performance by using a case. For example, a case including a conductive material may be configured to be electrically connected to an antenna to expand a ground region or a radiation region.

A display unit 351 may be disposed on the front surface of the main body 301 to output information, and a touch sensor may be provided on the display unit 351 to be implemented as a touch screen. As shown, the window 351a of the display unit 351 may be mounted on the first case 301a to form the front surface of the terminal body together with the first case 301a.

The main body 301 may include an audio output unit 352, a camera 321, a microphone 322, a user input unit 323, and the like. When the display unit 351 is implemented as a touch screen, it may function as a user input unit 323, and accordingly, a separate key may not be provided on the main body 301.

The band 302 is worn on the wrist to wrap around the wrist, and may be formed of a flexible material to facilitate wearing. As such an example, the band 302 may be formed of leather, rubber, silicone, synthetic resin material, or the like. In addition, the band 302 may be configured to be detachable from the main body 301, and may be configured to be replaced with various types of bands according to a user's taste.

Meanwhile, the band 302 may be used to expand the performance of the antenna. For example, a ground extension unit (not shown) that is electrically connected to an antenna and expands a ground area may be incorporated in the band.

The band 302 may be provided with a fastener 302a. The fastener 302a may be implemented by a buckle, a hook structure capable of snap-fit, or velcro (trade name), and may include an elastic section or material. . In this drawing, an example in which the fastener 302a is implemented in the form of a buckle is shown.

4 is a perspective view showing an example of a glass type mobile terminal 400 according to another embodiment of the present invention.

The glass-type mobile terminal 400 is configured to be worn on the head of the human body, and may include a frame portion (case, housing, etc.) for this. The frame portion may be formed of a flexible material to facilitate wearing. In this drawing, it is illustrated that the frame portion includes a first frame 401 and a second frame 402 made of different materials. In general, the mobile terminal 400 may include features of the mobile terminal 100 of FIGS. 1A to 1C or similar features.

The frame portion is supported on the head and provides a space in which various parts are mounted. As shown, electronic components such as the control module 480 and the sound output module 452 may be mounted on the frame part. In addition, a lens 403 covering at least one of the left eye and the right eye may be detachably mounted on the frame portion.

The control module 480 is configured to control various electronic components provided in the mobile terminal 400. The control module 480 may be understood as a configuration corresponding to the control unit 180 described above. In this drawing, it is illustrated that the control module 480 is installed in the frame on one side of the head. However, the location of the control module 480 is not limited thereto.

The display unit 451 may be implemented in the form of a head mounted display (HMD). The HMD type refers to a display method that is mounted on the head and displays an image directly in front of the user's eyes. When the user wears the glass-type mobile terminal 400, the display unit 451 may be disposed to correspond to at least one of the left eye and the right eye so that an image can be directly provided in front of the user's eyes. In this drawing, it is illustrated that the display unit 451 is positioned at a portion corresponding to the right eye so that an image can be output toward the user's right eye.

The display unit 451 may project an image to the user's eyes using a prism. In addition, the prism may be formed to be light-transmitting so that the user can see the projected image and the general field of view (a range that the user sees through the eyes) together.

In this way, the image output through the display unit 451 may be viewed by overlapping with the general view. The mobile terminal 400 may provide an Augmented Reality (AR) that displays a single image by superimposing a virtual image on a real image or a background by using the characteristics of the display.

The camera 421 is disposed adjacent to at least one of the left eye and the right eye, and is formed to capture a front image. Since the camera 421 is located adjacent to the eye, the camera 421 may acquire a scene viewed by the user as an image.

In this drawing, although the camera 421 is provided in the control module 480, it is not necessarily limited thereto. The camera 421 may be installed in the frame unit, or a plurality of cameras 421 may be provided to obtain a stereoscopic image.

The glass-type mobile terminal 400 may include

user input units

423a and 423b that are operated to receive a control command. The

user input units

423a and 423b may be any method as long as it is a tactile manner, such as a touch or a push. In this drawing, it is exemplified that the frame unit and the control module 480 are provided with

user input units

423a and 423b of a push and touch input method, respectively.

In addition, the glass-type mobile terminal 400 may be provided with a microphone (not shown) that receives sound and processes it as electrical voice data, and a sound output module 452 that outputs sound. The sound output module 452 may be configured to transmit sound through a general sound output method or a bone conduction method. When the sound output module 452 is implemented in a bone conduction method, when the user wears the mobile terminal 400, the sound output module 452 is in close contact with the head and vibrates the skull to transmit sound.

Next, a communication system that can be implemented through the mobile terminal 100 according to the present invention will be described.

First, the communication system may use different air interfaces and/or physical layers. For example, the radio interfaces usable by the communication system include Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), and Code Division Multiple Access (CDMA). ), Universal Mobile Telecommunications Systems (UMTS) (particularly, LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced)), Global System for Mobile Communications (GSM), etc. May be included.

Hereinafter, for convenience of description, the description will be limited to CDMA. However, it is apparent that the present invention can be applied to all communication systems including an Orthogonal Frequency Division Multiplexing (OFDM) wireless communication system as well as a CDMA wireless communication system.

The CDMA wireless communication system includes at least one terminal 100, at least one base station (Base Station, BS (may also be referred to as Node B or Evolved Node B)), and at least one base station controllers (BSCs). ), may include a Mobile Switching Center (MSC). The MSC is configured to be connected to a public switched telephone network (PSTN) and BSCs. The BSCs may be paired and connected with the BS through a backhaul line. The backhaul line may be provided according to at least one of E1/T1, ATM, IP, PPP, Frame Relay, HDSL, ADSL, or xDSL. Thus, a plurality of BSCs can be included in a CDMA wireless communication system.

Each of the plurality of BSs may include at least one sector, and each sector may include an omni-directional antenna or an antenna pointing in a specific direction radially from the BS. In addition, each sector may include two or more antennas of various types. Each BS may be configured to support a plurality of frequency allocations, and each of the plurality of frequency allocations may have a specific spectrum (eg, 1.25 MHz, 5 MHz, etc.).

The intersection of sector and frequency allocation can be referred to as a CDMA channel. The BS may be referred to as Base Station Transceiver Subsystem (BTS). In this case, one BSC and at least one BS may be combined to be referred to as a cycle. The base station may also represent a "cell site". Alternatively, each of the plurality of sectors for a specific BS may be referred to as a plurality of cell sites.

A broadcasting transmitter (BT) transmits a broadcast signal to terminals 100 operating in the system. The broadcast receiving module 111 shown in FIG. 1A is provided in the terminal 100 to receive a broadcast signal transmitted by BT.

In addition, a global positioning system (GPS) for checking the location of the mobile terminal 100 may be linked to the CDMA wireless communication system. The satellite 300 helps to determine the location of the mobile terminal 100. Useful location information may be obtained by two or fewer or more satellites. Here, the location of the mobile terminal 100 may be tracked using not only GPS tracking technology but also all technologies capable of tracking the location. Further, at least one of the GPS satellites may optionally or additionally be responsible for satellite DMB transmission.

The location information module 115 provided in the mobile terminal is for detecting, calculating, or identifying the location of the mobile terminal, and representative examples may include a Global Position System (GPS) module and a Wireless Fidelity (WiFi) module. If necessary, the location information module 115 may perform any function among other modules of the wireless communication unit 110 in order to obtain data on the location of the mobile terminal as a substitute or additionally.

The GPS module 115 calculates distance information and accurate time information from three or more satellites, and then accurately calculates three-dimensional current location information according to latitude, longitude, and altitude by applying a trigonometry to the calculated information. can do. Currently, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 may calculate speed information by continuously calculating the current location in real time. However, it is difficult to accurately measure the location of a mobile terminal using a GPS module in a shaded area of a satellite signal, such as indoors. Accordingly, in order to compensate for positioning of the GPS method, a WiFi Positioning System (WPS) may be used.

The Wi-Fi positioning system (WPS: WiFi Positioning System) uses a WiFi module provided in the mobile terminal 100 and a wireless access point (AP) that transmits or receives a wireless signal with the WiFi module. As a technology for tracking the location of a device, it refers to a location positioning technology based on WLAN (Wireless Local Area Network) using WiFi.

The Wi-Fi location tracking system may include a Wi-Fi location positioning server, a mobile terminal 100, a wireless AP connected to the mobile terminal 100, and a database in which information about a wireless AP is stored.

The mobile terminal 100 connected to the wireless AP may transmit a location information request message to a Wi-Fi location location server.

The Wi-Fi location server extracts information on a wireless AP connected to the mobile terminal 100 based on the location information request message (or signal) of the mobile terminal 100. The information on the wireless AP connected to the mobile terminal 100 may be transmitted to the Wi-Fi location server through the mobile terminal 100 or from the wireless AP to the Wi-Fi location server.

Based on the location information request message of the mobile terminal 100, the extracted wireless AP information is MAC Address, Service Set IDentification (SSID), Received Signal Strength Indicator (RSSI), Reference Signal Received Power (RSRP), and RSRQ ( Reference Signal Received Quality), channel information, Privacy, Network Type, Signal Strength, and Noise Strength.

As described above, the Wi-Fi location server may receive information on a wireless AP connected to the mobile terminal 100 and extract wireless AP information corresponding to a wireless AP to which the mobile terminal is connected from a database built in advance. At this time, the information of random wireless APs stored in the database includes MAC Address, SSID, channel information, Privacy, Network Type, latitude and longitude coordinates of the wireless AP, the building name where the wireless AP is located, the number of floors, and detailed indoor location information (GPS coordinates). Available), the AP owner's address, phone number, etc. In this case, in order to remove wireless APs provided using mobile APs or illegal MAC addresses during the positioning process, the Wi-Fi location positioning server may extract only a predetermined number of wireless AP information in the order of the highest RSSI.

Thereafter, the Wi-Fi location server may extract (or analyze) the location information of the mobile terminal 100 by using at least one wireless AP information extracted from the database. By comparing the included information with the received wireless AP information, location information of the mobile terminal 100 is extracted (or analyzed).

As a method for extracting (or analyzing) the location information of the mobile terminal 100, a Cell-ID method, a finger print method, a triangulation method, a landmark method, and the like may be used.

The Cell-ID method is a method of determining a location of a wireless AP having the strongest signal strength among surrounding wireless AP information collected by the mobile terminal as the location of the mobile terminal. It is simple to implement, does not incur additional costs, and has the advantage of being able to obtain location information quickly, but has a disadvantage in that the positioning accuracy is lowered when the installation density of the wireless AP is low.

The fingerprint method is a method of selecting a reference location in a service area, collecting signal strength information, and estimating a location through signal strength information transmitted from a mobile terminal based on the collected information. In order to use the fingerprint method, it is necessary to make a database of propagation characteristics in advance.

The triangulation method is a method of calculating a location of a mobile terminal based on coordinates of at least three wireless APs and a distance between the mobile terminals. In order to measure the distance between the mobile terminal and the wireless AP, the signal strength is converted into distance information, the time at which the wireless signal is transmitted (Time of Arrival, ToA), the time difference in which the signal is transmitted (Time Difference of Arrival, TDoA) , The angle at which the signal is transmitted (Angle of Arrival, AoA), etc. may be used.

The landmark method is a method of measuring the location of a mobile terminal using a landmark transmitter that knows the location.

In addition to the listed methods, various algorithms may be used as a method for extracting (or analyzing) the location information of the mobile terminal.

The location information of the mobile terminal 100 extracted in this way is transmitted to the mobile terminal 100 through the Wi-Fi location positioning server, so that the mobile terminal 100 can obtain the location information.

The mobile terminal 100 may obtain location information by being connected to at least one wireless AP. In this case, the number of wireless APs required to obtain location information of the mobile terminal 100 may be variously changed according to a wireless communication environment in which the mobile terminal 100 is located.

1A, the mobile terminal according to the present invention includes Bluetooth ^TM , Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and NFC (Near Field Communication), Wireless Universal Serial Bus (USB), and other short-range communication technologies can be applied.

Among them, the NFC module provided in the mobile terminal supports contactless short-range wireless communication between terminals at a distance of about 10 cm. The NFC module can operate in any one of a card mode, a reader mode, and a P2P mode. In order to operate the NFC module in the card mode, the mobile terminal 100 may further include a security module for storing card information. Here, the security module may be a physical medium such as UICC (Universal Integrated Circuit Card) (e.g., SIM (Subscriber Identification Module) or USIM (Universal SIM)), Secure micro SD, and a sticker, or a logical medium embedded in the mobile terminal ( For example, it may be an embeded SE (Secure element). Data exchange based on Single Wire Protocol (SWP) may be performed between the NFC module and the security module.

When the NFC module is operated in the card mode, the mobile terminal can transmit card information stored like a traditional IC card to the outside.

Specifically, when a mobile terminal that stores card information of a payment card such as a credit card or a bus card is brought close to the payment machine, mobile short-range payment can be processed, and the mobile terminal that stores the card information of the card for access is approved. Upon approaching the flag, the access authorization process can begin. Cards such as credit cards, transportation cards, and access cards are mounted on a security module in the form of an applet, and the security module may store card information on the mounted card.

Here, the card information of the payment card may be at least one of a card number, balance, and usage history, and the card information of the access card may be at least one of the user's name, number (eg, the user's student number or employee number), and access details It can be one.

When the NFC module is operated in the reader mode, the mobile terminal can read data from an external tag. In this case, the data received from the tag by the mobile terminal may be coded in the NFC Data Exchange Format determined by the NFC forum. In addition, the NFC forum defines four record types. Specifically, the NFC Forum defines four RTDs (Record Type Definition), such as Smart Poster, Text, Uniform Resource Identifier (URI), and General Control. When the data received from the tag is a smart poster type, the controller may execute a browser (eg, an Internet browser), and when the data received from the tag is a text type, the controller may execute a text viewer. When the data received from the tag is a URI type, the control unit executes a browser or makes a phone call, and when the data received from the tag is a general control type, an appropriate operation may be performed according to the control contents.

When the NFC module is operated in a peer-to-peer (P2P) mode, the mobile terminal can perform P2P communication with other mobile terminals. At this time, LLCP (Logical Link Control Protocol) may be applied to P2P communication. For P2P communication, a connection may be created between a mobile terminal and another mobile terminal. In this case, the generated connection may be divided into a connectionless mode in which one packet is exchanged and terminated, and a connection-oriented mode in which packets are continuously exchanged. Through P2P communication, data such as electronic business cards, contact information, digital photos, and URLs, and setup parameters for Bluetooth and Wi-Fi connection may be exchanged. However, since the usable distance of NFC communication is short, the P2P mode can be effectively utilized for exchanging small sized data.

Hereinafter, embodiments related to a control method that can be implemented in a mobile terminal configured as described above will be described with reference to the accompanying drawings. It is obvious to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

In addition, embodiments of the present invention describe the case where the mobile terminal is the mobile terminal 100 of FIGS. 1A to 1C as an example, but according to the embodiment, the mobile terminal 200 of FIG. 2 and the mobile terminal of FIG. 3 ( 300) and the mobile terminal 400 of FIG. 4 may be any one.

5 is a configuration diagram of a wearable device according to an embodiment of the present invention. Referring to FIG. 5, the wearable device 100 includes a communication unit 110, a sensing unit 140, a memory 170, and a control unit 180.

The wireless communication unit 110 transmits and receives data to and from an external device connected to the wearable device 100.

The sensing unit 140 senses user behavior. The sensing unit 140 senses a user's gait or gait. ,

The display 151 displays a graphic image according to a control command from the controller 180.

The memory 170 stores user behavior information according to a control command from the controller 180.

The controller 180 controls the sensing unit 140 to sense the user's behavior for a predetermined time, generates first user behavior information based on the sensed user behavior, and detects a fall according to the generated first user behavior information. Is set differently, the sensing unit 140 controls to sense the user behavior at predetermined periodic intervals, generates second user behavior information based on the sensed user behavior, and generates second user behavior information based on the generated second user behavior information. It is determined whether to adjust the fall detection sensitivity.

Referring to FIG. 6, first, a software configuration will be described. The software configuration includes an application 610, an OS 620, a network 630, and a storage 640.

Next, the hardware configuration will be described. The wearable device 100 includes a wireless communication unit 110, a controller 180, and a sensing unit 140.

The sensing unit 140 includes a wearing detection sensor 142, an inertial sensor 143, and a GPS sensor 144.

The wear detection sensor 142 includes an illuminance sensor, a hall sensor, a voltage measurement sensor, and an optical pulse sensor. The controller 150 determines whether the user wears the wearable device 100 based on the physical quantity sensed by the wearing detection sensor 142.

The illuminance sensor will be described. In the case of a wearable device equipped with an illuminance sensor, if the amount of light sensed by the illuminance sensor is less than a predetermined range, the control unit 150 determines that the user wears the wearable device, and the amount of light sensed by the illuminance sensor exceeds a predetermined range. If so, it is determined that the user does not wear the wearable device.

The Hall sensor will be described. In the case of a wearable device equipped with a Hall sensor, if a permanent magnet is placed in the first row and a Hall sensor (magnetic sensor) is placed in the second row and fastened, the magnetic force increases due to the permanent magnet, so that it is recognized that the Hall sensor is worn. When the fastening is released, the hall sensor detects a weakened magnetic force and recognizes that the wearing has been released.

If the magnetic force sensed by the Hall sensor is more than a predetermined range, the controller 150 determines that the user wears the wearable device, and if the magnetic force sensed by the Hall sensor is less than the predetermined range, it determines that the wearable device is not worn.

Next, a voltage measurement sensor will be described. In the case of a wearable device equipped with a voltage measurement sensor, a material having high conductivity is used for the first row and the second row opposite to each other. A certain level of voltage is measured, and it is determined that the user is wearing a wearable device. If the voltage is not measured, it is determined that the user is not wearing a wearable device. If the voltage sensed by the voltage measurement sensor is more than a predetermined range, the control unit 150 determines that the user wears the wearable device, and if the voltage sensed by the voltage measurement sensor is less than the predetermined range, it is determined that the wearable device is not worn. do.

Next, an optical pulse sensor will be described. In the case of a wearable device equipped with an optical pulse sensor, it is determined whether to wear it by sensing a measurable pulse wave from a blood vessel located in a shallow skin.

When the optical pulse sensor senses a pulse wave of a predetermined shape and a predetermined period, the controller 150 recognizes that the user is wearing a wearable device. When the optical pulse sensor senses a signal in the form of noise, the controller 150 determines that the user does not wear the wearable device.

The inertial sensor 143 includes an acceleration sensor, an angular velocity sensor, and a geomagnetic sensor. In addition, the inertial sensor 143 includes an inclination sensor, an altitude sensor, and a pressure sensor.

The controller 180 may be an application processor (AP). The application processor is a non-memory semiconductor used in smart phones and digital TVs, and functions like the central processing unit (CPU) of a general computer. As the most technologically intensive component of smartphone semiconductors, SP, mobile DRAM, and flash memory are mounted on an AP chip that is only 14 mm in width and 1.4 mm in thickness.

7 is a flowchart of a method of controlling a wearable device according to an embodiment of the present invention. The present invention is implemented by the controller 180.

Referring to FIG. 7, the sensing unit 140 controls the user behavior to be sensed for a predetermined time (S710).

First user behavior information is generated based on the sensed user behavior (S720).

The fall detection sensitivity is set differently according to the generated first user behavior information (S730).

The sensing unit 140 controls the user behavior to be sensed at predetermined periodic intervals (S740).

Second user behavior information is generated based on the sensed user behavior (S750).

It is determined whether to adjust the fall detection sensitivity based on the generated second user behavior information (S760).

8 is a diagram illustrating that a malfunction occurs in the prior art according to an embodiment of the present invention. 8 includes FIGS. 8(a) and 8(b).

8(a) is a diagram illustrating that a user falls while skiing.

Referring to FIG. 8(a), a user may fall while skiing. For example, if the user does not move for more than 60 seconds, the wearable device 100 automatically transmits a call signal to the emergency call center. By the way, in the case of emergency call center centers, about 10 to 12 calls come in within a week, but only one person fell in need of medical help, and the rest were called false detection calls.

8(b) is an image showing a bulletin board text showing a user's dissatisfaction with the erroneous detection.

Referring to FIG. 8B, the user sat down on a sofa at home, and the wearable device 100 transmitted a fall detection signal to the user. Even though the user did not receive any shock, the wearable device worn by the user malfunctioned, and a fall was erroneously detected.

9 is a diagram illustrating prevention of occurrence of false fall detection using a wear detection sensor according to an embodiment of the present invention. 9 includes FIGS. 9(a) and 9(b).

9A is a diagram illustrating a wearable device 100 in the form of a watch. Referring to FIG. 9A, the illuminance sensor 141 may be mounted on the back side of the wearable device 100.

9(b) is a diagram showing the wearable device 100 in the form of a band. Referring to FIG. 9B, the illuminance sensor 141 may be mounted on the back side of the wearable device 100.

The sensing unit 140 includes an illuminance sensor 141, a voltage measurement sensor, a magnetic field sensor, an optical sensor, and a light volume pulse wave sensor.

For example, if the amount of light sensed by the illuminance sensor 141 is within a predetermined range, the controller 180 determines that the user is wearing the wearable device 100, and the amount of light sensed by the illuminance sensor 141 is within a predetermined range. If so, it is determined that the user does not wear the wearable device 100.

The controller 180 determines that the wearable device 100 is worn, and executes the fall detection algorithm only in this case.

According to the present invention, it is possible to check whether the user is wearing a wear based on the illuminance sensor, and only when the user wears a wearable device, a fall detection algorithm is executed to prevent false detection of a fall that occurs when the user is not wearing it. I can.

10 is a diagram illustrating a fall occurrence event and an acceleration magnitude analysis by time according to an embodiment of the present invention. FIG. 10 includes FIGS. 10(a) and 10(b).

10(a) is a diagram showing a fall occurrence event. Referring to FIG. 10(a), as time passes, the user falls while walking.

First, the user walks (S1010).

Next, the user loses the balance while walking (S1020).

Then, the user falls (S1030). At this time, a strong and large impact occurs on the ground.

When a predetermined time elapses after the user falls, an alarm may be generated automatically in the wearable device 100 or the user may manually press a help button mounted on the wearable device 100 (S1040). When the help button is pressed, the controller 180 of the wearable device 100 automatically transmits a call signal to an external device.

Here, the condition in which the automatic alarm occurs means that the user remains lying on the ground without moving for a predetermined time. When the condition for generating the automatic alarm is met, the controller 180 of the wearable device 100 automatically transmits a call signal to an external device. For example, the external device may be a server of an emergency call center.

10(b) is a diagram showing an acceleration signal analysis for each time. Referring to FIG. 10B, the x-axis means time, and the y-axis means the magnitude of acceleration sensed by the sensing unit 140. Time can be a unit time. For example, the unit time may be ms. The magnitude of the acceleration can be an integer multiple of the gravitational acceleration.

When explaining the change of the acceleration magnitude for each time period, in the case of the step S1010 of the user walking, the acceleration magnitude is maintained within a predetermined range.

Next, in the case of the user losing the balance (S1020), the magnitude of the acceleration is changed. In the free fall step 10, the magnitude of the acceleration is minimized.

Next, in the case of the step S1030 in which the user falls, a fall occurs, and the magnitude of the acceleration increases rapidly for a short period of time, and then returns to the original position. In the impact stage 20, the magnitude of the acceleration is maximized.

Next, in the case of the step (S1040) when the user enters the stabilizer, the user loses consciousness after turning his body slightly due to a fall shock, and cannot move. In this case, the magnitude of the acceleration is maintained constant. In the ballast phase 30, the magnitude of the gravitational acceleration initially changes and remains constant after a certain period of time.

After the fall occurs, if the user's movement is not detected during a static period, the controller 180 determines that a fall occurs. For example, if the magnitude of the acceleration sensed by the sensing unit 140 is kept constant during a static period, it is determined that a fall occurs.

After the fall occurs, if the user's movement is sensed during a static period, the controller 180 determines that the fall does not occur.

Next, a case where the user is a patient with hand tremor will be described. Here, the shaking hands include Parkinson's disease patients. First, when the user is a general person, the controller 180 determines that a fall occurs if the user's movement is not detected during a static period after the fall occurs. For example, if the magnitude of the acceleration sensed by the sensing unit 140 is kept constant during a static period, it is determined that a fall occurs.

However, when the user is a hand-shake patient, the user's motion is detected during a static period due to hand-shake. Accordingly, after the user's fall occurs, the controller 180 detects the user's movement during a static period and determines that the fall does not occur.

However, in reality, there is a problem that the user cannot move due to an impact after a fall. Therefore, when the user is a hand tremor patient, it is necessary to apply different criteria than when the user is a normal person, which will be described later in FIG. 15.

Referring to FIG. 11, the x-axis represents a group divided by walking speed, and the y-axis represents the number of falls per year.

Groups classified by walking speed may be a first group, a second group, a third group, and a fourth group.

The first group (Slow) is a group whose walking speed is very slow. The walking speed of the first group is less than 0.6 m/s. In the first group, all falls occur about 1.25 times a year, indoor falls occur 0.75 times a year, and outdoor falls occur about 0.16 times a year. The first group is in poor health, so indoor falls are more common than outdoor falls.

The second group (Midly abnormal) is a group with a slightly slow walking speed. The walking speed of the second group is 0.6 m/s or more and less than 1.0 m/s. In the second group, all falls occur about 0.90 times a year, indoor falls occur 0.40 times a year, and outdoor falls occur about 0.30 times a year.

The third group (Normal) is a group whose walking speed is normal. The walking speed of the third group is 1.0 m/s or more and less than 1.3 m/s. In the third group, all falls occur about 0.80 times a year, indoor falls occur 0.30 times a year, and outdoor falls occur about 0.40 times a year.

The fourth group (Fast) is a group having a high walking speed. The fourth group is a group of very energetic and energetic young people. The walking speed of the fourth group is over 1.3 m/s. In the fourth group, all falls occur about 1.75 times a year, indoor falls occur 0.40 times a year, and outdoor falls occur about 1.00 times a year. The fourth group is in good health, so outdoor falls are more common than indoor falls.

In addition, the first to fourth groups may be classified according to the health status of the user. The first group is a group having a very poor health condition, the second group is a group having a slightly poor health condition, the third group is a group whose health status is normal, and the fourth group is a group having a very good health condition.

According to an embodiment of the present invention, the walking speed has a close correlation with the fall detection probability. For example, if the walking speed is abnormally slow, the incidence of falls increases. In other words, the likelihood of indoor falls increases.

In addition, even when the walking speed is faster than normal, the frequency of occurrence of falls increases. In other words, the likelihood of an outdoor fall increases.

In the present invention, a customized fall threshold is set by designing an algorithm based on the above contents.

For example, NWS (Normal walking speed) refers to a normal walking speed, and FWS (Fast walking speed) refers to the fastest possible walking speed.

The controller 180 calculates and groups the walking speed based on the NWS and FWS. It can be grouped into a first group, a second group, a third group, and a fourth group.

The controller 180 sets an optimized impulse intensity and a silence period for each group. For example, in the case of the first group, the controller 180 reduces the impulse threshold value and decreases the static period threshold value. In the case of the fourth group, the controller 180 increases the impulse threshold value and increases the static period threshold value.

According to the present invention, it is possible to reduce the occurrence of false fall detection by setting a fall detection threshold according to the attribute of each group.

12 is a diagram illustrating types of user behavior information for setting a fall detection sensitivity according to an embodiment of the present invention. 12 includes FIGS. 12(a) and 12(b).

FIG. 12(a) is a diagram showing user behavior information input for setting a fall detection sensitivity. Referring to FIG. 12A, the controller 180 analyzes a user's behavior in order to set the fall detection sensitivity and sets the fall detection sensitivity.

In the case of the gait test 1210, when an input for selecting a gait test icon is received from a user, the controller 180 of the wearable device 100 displays a text message. The text message includes a message saying that when you are standing and beeping, take 30 steps as usual.

The gait test 1210 includes normal walking, fast walking, and running.

In the case of the posture conversion test 1220, when an input for selecting a posture conversion test icon is received from a user, the controller 180 of the wearable device 100 displays a text message. The text message includes standing and lying in bed when you hear a beep.

The posture conversion test 1220 includes a standing to lying behavior and a standing to sitting behavior. It also includes sitting and standing or walking (Timed Up and Go: TUG) or walking and turning at an arbitrary angle (usually 180/90 degrees).

In the case of the balance test 1230, when an input for selecting a balance test icon is received from a user, the controller 180 of the wearable device 100 displays a text message. The text message includes the content of standing and holding one leg up when you hear a beep.

The balance test 1230 includes raising one leg and walking with eyes closed.

In the case of the quickness test 1240, when an input for selecting the quickness test icon is received from the user, the controller 180 of the wearable device 100 displays a text message. The text message includes the content of press the button when you hear a beep with your arm down.

The wits test 1240 includes various agility test actions.

In the gait test 1210, in the case of walking information i) the controller 180 may request the user to perform the corresponding information, and ii) the controller 180 automatically recognizes the walking pattern, collects the corresponding information, and analyzes You may.

In addition, in the case of other actions such as posture change, balance, and quickness, the information request message is required as above, since the user must perform the corresponding action to collect information.

The user behavior information includes walking speed information, and includes at least one of posture change information, balance information, and quickness information.

According to an embodiment of the present invention, weights of user behavior information may be set differently.

The controller 180 sets different weights of walking speed information, posture conversion information, the balance information, and the quickness information.

For example, the weight of the walking speed information may be 4, the weight of the posture transformation information may be 3, the weight of the balance information may be 2, and the weight of the net strength information may be 1.

Also, the controller 180 may set the weight of the walking speed information to the highest. This is because, when determining a fall, walking speed information is the most important among user behavior information because it is possible to collect information on a daily basis without special user action.

Fig. 12(b) is a diagram showing adjustment of the fall detection sensitivity with a walking speed and a walking pattern. Referring to FIG. 12B, the controller 180 analyzes a user's walking speed and walking pattern to set the fall detection sensitivity, and sets the fall detection sensitivity.

13 is a flowchart illustrating a method of controlling a wearable device according to an embodiment of the present invention. The present invention is implemented by the controller 180.

Referring to Fig. 13, first, setting of the initial fall detection sensitivity will be described.

First, walking information for detecting walking speed is collected (S1310). The controller 180 turns on the inertial sensor.

Next, the average walking speed is measured (S1320).

The control unit 180 sets the fall detection sensitivity differently according to the walking speed.

When the walking speed is less than the first speed, the controller 180 sets the fall detection sensitivity to the first sensitivity (S1322).

For example, the first speed is 0.6 m/s. In the case of the first sensitivity, the impulse intensity is 5 g, and the silence period is 15 seconds. That is, if the walking speed is less than the first speed, the controller 180 classifies the user into the first group and sets the fall detection sensitivity to the first sensitivity. When the user falls, an impulse of more than 5g occurs, and if the user does not move for more than 15 seconds, it is judged as a fall. Here, g means gravitational acceleration of 9.8 m/s2.

When the walking speed is greater than or equal to the first speed and less than the second speed, the controller 180 sets the fall detection sensitivity to the second sensitivity (S1324),

For example, the first speed is 0.6 m/s and the second speed is 1 m/s. In the case of the second sensitivity, the impulse intensity is 7 g and the silence period is 20 seconds. That is, if the walking speed is greater than or equal to the first speed and less than the second speed, the controller 180 classifies the user into the second group and sets the second sensitivity to the fall detection sensitivity. When the user falls, an impulse of 7 g or more occurs, and if the user does not move for more than 20 seconds, it is judged as a fall.

When the walking speed is greater than or equal to the second speed and less than the third speed, the controller 180 sets the fall detection sensitivity to a third sensitivity (S1326),

For example, the second speed is 1.0 m/s and the third speed is 1.3 m/s. In the case of the third sensitivity, the impulse intensity is 9 g and the silence period is 25 seconds. That is, if the walking speed is greater than or equal to the second speed and less than the third speed, the controller 180 classifies the user into the third group and sets the fall detection sensitivity to the third sensitivity. When the user falls, an impulse of 9 g or more occurs, and if the user does not move for more than 25 seconds, the controller 180 determines that a fall has occurred.

When the walking speed is greater than or equal to the third speed, the controller 180 sets the fall detection sensitivity to the fourth sensitivity (S1328),

For example, the third speed is 1.3 m/s. In the case of the fourth sensitivity, the impulse intensity is 11 g, and the silence period is 30 seconds. That is, if the walking speed is equal to or greater than the third speed, the controller 180 classifies the user into the third group and sets the fall detection sensitivity to the fourth sensitivity. When the user falls, an impulse of 11 g or more occurs, and if the user does not move for more than 30 seconds, it is judged as a fall.

The following describes the adjustment of the amount of impulse and the static period according to the speed of the walking speed.

First, a case where the walking speed is high will be described.

The controller 180 sets a larger amount of an impulse corresponding to the fall detection sensitivity as the walking speed increases, and sets a longer silence period corresponding to the fall detection sensitivity as the walking speed increases.

If the walking speed is fast, the person's health is better. Therefore, it is necessary to set a large amount of impact corresponding to the fall detection sensitivity and set a longer static period corresponding to the fall detection intensity to enable more accurate fall detection and to detect a fall. Can be prevented.

Next, a case where the walking speed is slow will be described.

The controller 180 sets a smaller amount of impact corresponding to the fall detection sensitivity as the walking speed is slower, and sets a shorter silence period corresponding to the fall detection sensitivity as the walking speed is slower.

If the walking speed is slow, since it is closely related to harmful health conditions such as walking disability, falls, hospitalization, admission to a shelter, and death, the amount of impulse corresponding to the fall detection sensitivity is set small, and the amount of shock corresponding to the fall detection intensity is set to be static. Fall detection can be performed more accurately and quickly when the period is set to be small.

Next, automatic adjustment of the fall detection sensitivity will be described.

Walking information for adjusting the fall detection sensitivity is collected (S1330).

The fall detection error rate is periodically calculated (S1340). Here, the period may be set by the user and may be several days to several months.

The fall detection error rate will be described. The fall detection error rate is the fall detection incidence rate (the probability of falling or not matching the fall when a fall actually occurs, that is, the fall detection incidence rate is divided into a fall detection success and a fall detection failure). It means the sum of error rates for the probability of misrecognizing. Specifically, the controller 180 calculates the fall detection error rate based on a normal walking speed, an activity score, and a fall detection frequency. If you hit a fall (successful fall detection), 1, 2, 3 points are awarded. It is calculated in a weighted manner: 1 point is awarded for the first fall occurrence, 2 points are awarded for two consecutive matches, and 3 points are awarded for 3 consecutive times. On the other hand, if the fall detection fails despite the actual fall occurrence (fall detection failure), the sensitivity is immediately adjusted according to the intensity of the fall occurrence. This is because the discomfort felt when a fall cannot be detected despite the occurrence of a fall is the greatest than any other case.

Conversely, if a fall is falsely detected, -1 to -10 points are given. When a fall is detected for the first time, -1 point is given, if it occurs twice in a row, -5 points are given, and if it occurs three times in a row, -10 points are given.

In addition, according to the experiment of the present invention, people think that if fall erroneous detection occurs less than 2 times a day, the error frequency is tolerated, and if fall erroneous detection occurs 3 or more times a day, it is uncomfortable.

Next, the error rate adjustment will be described.

The current periodic fall detection error rate is compared with the previous fall detection error rate, and according to the result, it is determined whether to maintain the current fall detection sensitivity or adjust the fall detection sensitivity.

If the absolute value of the difference between the current period fall detection sensitivity error rate and the previous period fall detection sensitivity error rate is equal to or greater than the first error rate threshold (S1350), the controller 180 adjusts the current fall detection sensitivity (S1360).

If the absolute value of the difference between the current period fall detection sensitivity error rate and the previous period fall detection sensitivity error rate is less than the first error rate threshold (S1360), the controller 180 maintains the current fall detection sensitivity (S1370).

The error rate threshold will be described. The error rate threshold is set to a level at which the user's feedback is reflected as much as possible when changing from the existing fall detection group to another fall detection group.

In the case of false fall detection, if less than three times a day occurs, the user does not feel uncomfortable. However, if the fall detection fails even once, the user immediately feels uncomfortable. The success of false fall detection, which means that it is not a fall even though it is not a fall, is a function of a basic algorithm, so no additional points are added or subtracted. Therefore, the fall detection sensitivity is adjusted in a direction in which fall detection must be matched while minimizing fall false detection. In the present invention, the error rate threshold is set to 10% or a specific threshold, which is only an example, and the scope of the present invention is not limited thereto.

First, an embodiment of maintaining the current fall detection sensitivity will be described.

For example, groups classified by walking speed may be a first group, a second group, a third group, and a fourth group. The first group refers to a group with a very poor health condition with exercise or gait disorder due to various causes, the second group refers to a group with a slightly poor health condition, and the third group refers to a group with a normal health condition. And, the 4th group means a group with very good health.

If the current user's walking speed is in the third group (normal group), the current periodic fall detection error rate is 35%, and the previous fall error rate is 30%, the absolute value of the difference between the current periodic fall detection error rate and the previous fall error rate is 5 Becomes %. Since 5% of the absolute value of the difference in error rate is less than 10% of the error rate threshold, the controller 180 maintains the current fall detection sensitivity.

For example, if the current periodic fall detection error rate is 25% and the previous fall error rate is 30%, the absolute value of the difference between the current periodic fall detection error rate and the previous fall error rate is 5%. Since 5% of the absolute value of the difference in error rate is less than 10% of the error rate threshold, the controller 180 maintains the current fall detection sensitivity.

Next, an embodiment of adjusting the current fall detection sensitivity will be described.

For example, if the current user's walking speed is in the third group (normal group), the current periodic fall detection error rate is 45%, and the previous fall error rate is 30%, the difference between the current periodic fall detection error rate and the previous fall error rate is It becomes a plus 15%, and the absolute value of the error rate is 15%. An absolute value of 15% of the difference in error rate is greater than the error rate threshold value of 10%, and the sign of the difference is positive, so the controller 180 adjusts the current fall detection sensitivity upward.

In this case, the controller 180 adjusts the fall detection sensitivity from the third sensitivity to the fourth sensitivity.

This is because, if a normal person frequently detects a fall, it is necessary to change the criteria to reduce the occurrence of a fall. That is, the fall detection sensitivity should be adjusted from the sensitivity of a normal person to that of a very healthy person to reduce false fall detection.

Next, a case where a normal person suddenly broke his leg and put a cast on his leg will be described. In this case, the walking speed becomes slower than the previous walking speed.

For example, if the current user's walking speed is in the third group (normal group), the current period fall detection error rate is 15%, and the previous period fall error rate is 30%, the current period fall detection error rate and the previous period fall error rate The difference is minus 15%, and the absolute value of the error rate is 15%. An absolute value of 15% of the error rate difference is greater than an error rate threshold of 10%, and the sign of the difference is negative, so the controller 180 adjusts the current fall detection sensitivity downward.

In this case, the controller 180 adjusts the fall detection sensitivity from the third sensitivity to the second sensitivity.

This is because, if the fall detection error rate for a normal person decreases significantly, the fall detection success rate can be increased only when the standard is changed to a high fall detection sensitivity. That is, the fall detection sensitivity should be adjusted from the sensitivity of a normal person to that of a slightly sick person to increase the fall detection without affecting false fall detection.

The posture conversion test, balance test, and quickness test are also configured similarly to the flowchart of FIG. 13. However, in the case of the gait test, the difference from other tests is that the user does not recognize it after the initial test and collects gait information on a normal basis.

Referring to FIG. 14, the controller 180 displays a text message confirming whether the user is a shaking hand.

When the user is a Parkinson's disease patient, when a selection input of the Yes icon 10 is received from the user, the controller 180 executes the second mode.

When the user is normal, when a selection input of the No icon 20 is received from the user, the controller 180 executes the first mode. Here, the first mode refers to a normal mode in which the user is a normal person, and the second mode refers to a mode in which the user is a shaker patient.

15 is a flowchart illustrating a method of controlling a wearable device when a user is a hand tremor patient according to an embodiment of the present invention. The present invention is implemented by the controller 180.

Referring to FIG. 15, first, a hand shake pattern is periodically monitored.

When the user's hand shake measured by the sensing unit 140 includes a specific pattern (S1510), the mode of the wearable device is changed from a first mode meaning a general mode to a second mode indicating that the user is suffering from a specific disease. Change (S1520).

Specifically, the controller 180 of the wearable device detects the user's hand shake through the sensing unit 140, and when the user's hand shake continues for a predetermined time or longer in a specific hand shake pattern, it determines the user as a hand shake patient, and automatically 2 Run mode.

Here, the first mode means a general mode, and the second mode means a mode that means that the user suffers from a specific disease.

If the user's hand shake does not include a specific pattern (S1510), a first mode indicating a general mode is applied (S1530).

When a fall occurs and the amount of shock sensed by the sensing unit 140 exceeds a preset amount of shock (S1540), a reference corresponding to the fall detection sensitivity is set differently from the reference of the first mode (S1550). Specifically, the controller 180 sets the acceleration signal of the second mode to be different from the acceleration signal of the first mode. A detailed description of this will be described later in FIG. 16.

Next, when the user is a Parkinson's disease patient, adjustment of the fall detection sensitivity will be described.

Parkinson's disease mainly refers to a disorder in which movement disorders, such as tremors, muscle stiffness, and slow movements, appear. In particular, the rate at which the symptoms of Parkinson's disease worsen varies from person to person, but it usually progresses very slowly. Therefore, tremor with limb spasm is a common symptom in most patients. I can.

The controller 180 determines the degree of vibration caused by the basic tremor and sets an appropriate amount of impact in a static period so that a fall can be detected.

The controller 180 sets the fall detection sensitivity differently according to the walking speed of the Parkinson's disease patient.

When the walking speed is less than the first speed, the controller 180 sets the fall detection sensitivity to the first sensitivity.

For example, the first speed is 0.6 m/s. In the case of the first sensitivity, the impulse intensity is 4 g and the silence period is 15 seconds. That is, if the walking speed is less than the first speed, the controller 180 classifies the user into the first group and sets the fall detection sensitivity to the first sensitivity. When the user falls, an impulse of more than 4g occurs, and if the user does not move for more than 15 seconds, it is judged as a fall. Here, g means gravitational acceleration of 9.8 m/s2.

When the walking speed is greater than or equal to the first speed and less than the second speed, the controller 180 sets the fall detection sensitivity to the second sensitivity.

16 is a diagram illustrating an acceleration signal during a static period when a user is a hand tremor patient according to an embodiment of the present invention. Fig. 16 includes Figs. 16(a) and 16(b).

16(a) is a diagram showing an acceleration signal when the user is a general person. Referring to FIG. 16A, since a linear acceleration signal is generated during a silent period after a fall, the controller 180 determines the user's state as a fall.

16(b) is a diagram showing an acceleration signal when the user is a patient with hand tremor. Referring to FIG. 16(b), during a silent period after a fall, an acceleration signal of a predetermined period is generated. That is, even when the user is unable to move during a static period after a fall, an acceleration signal of a predetermined period is generated. When the user is a patient with hand tremor, and when an acceleration signal of a predetermined period is generated, the controller 180 determines the state of the user. Is determined as a fall, and an emergency call is transmitted to an external device.

The controller 180 sets an acceleration signal during a static period for a Parkinson's disease user differently from an acceleration signal during a static period for a normal user. Specifically, the controller 180 sets the acceleration signal during the static period of the second mode to be different from the acceleration signal during the static period of the first mode.

In the prior art, when the user is a shaking hand, the first mode is applied to determine the user's state as normal because a periodic signal is generated during a static period after the user falls. However, the user unknowingly drops his hand and looks like that, and a fall actually occurs and the user cannot move.

On the contrary, in the case of the present invention, when the user is a hand tremor patient, the second mode is applied to determine the user's condition as a fall even if a periodic signal occurs during a static period after a fall, and an emergency call to an external device. send.

17 is a diagram illustrating a case where a user is a Parkinson's disease patient according to an embodiment of the present invention. Fig. 17 includes Figs. 17(a) and 17(b).

Fig. 17(a) is a diagram explaining the symptoms of Parkinson's disease patients. Parkinson's disease refers to a chronic progressive degenerative disease of the nervous system caused by the loss of dopamine neurons.

Parkinson's disease patients are at high risk of falls due to muscle stiffness, slow movements, and convulsions.

Referring to Figure 17 (a), 37% of Parkinson patients feel tired.

30% of Parkinson's patients find it difficult to write handwriting.

42% of Parkinson's patients have difficulty walking.

72% of Parkinson's patients feel shaking hands.

Fig. 17(b) is a diagram showing a Parkinson's disease patient walking. Referring to FIG. 17(b), when a Parkinson's disease patient walks, i) repeatedly curling the fingers occurs, ii) the hand shakes continuously, and iii) the gait is not constant, and the stride length occurs. This small phenomenon occurs.

In Parkinson's disease patients, tremors, tremors, and tremors occur involuntarily even in a resting state, and a general wearable device 100 senses the occurrence of vibration after a fall, and a false detection that determines this as a normal state occurs. .

Referring to FIG. 18, in the case of Parkinson's disease patients, the types of hand tremors may be type 1, type 2, and type 3.

In Type 1, when the user is in a resting state, the frequency range is 4-6 Hz, and when the user is in a standing, kinetic state, the frequency range is 4-6 Hz. In this case, the frequency difference between the static state and the motion state is less than 1.5 Hz.

In Type 2, when the user is in a resting state, the frequency range is 4-6 Hz, and when the user is in a standing state or kinetic state, the frequency range is 4-9 Hz. In this case, the frequency difference between the sperm state and the motion state becomes 1.5 Hz or more.

In Type 3, when the user is in a resting state, there is no present, and when the user is in a standing state or kinetic state, the frequency range is 4-9 Hz. In this case, only the user is in a standing state and an exercise state.

That is, when the user is a Parkinson's disease patient, vibration due to tremor unconsciously occurs even in a resting state.

19 is a diagram illustrating a hand shaking pattern of a hand shaking patient according to an embodiment of the present invention. 19 includes FIGS. 19(a), 19(b), 19(c), and 19(d).

Hand-shake The patient's hand-shake pattern is shown separately according to acceleration.

FIG. 19(a) is a diagram illustrating a hand shake pattern when the acceleration is 20 m/s2.

19(b) is a diagram showing a hand shake pattern when the acceleration is 5 m/s2.

19(c) is a diagram showing a hand shake pattern when the acceleration is 0.1 m/s2.

FIG. 19(d) is a diagram illustrating a hand shake pattern when the acceleration is 0.1 m/s2.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains, various modifications and variations can be made without departing from the essential characteristics of the present invention. Accordingly, the embodiments expressed in the present invention are not intended to limit the technical idea of the present invention, but to illustrate, and the scope of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas equivalent to or within the scope of the present invention should be construed as being included in the scope of the present invention.

Various embodiments have been described in the best mode for carrying out the present invention.

The present invention is used in a related field of a mobile device in which user behavior is analyzed, user behavior information is generated, and initiation detection kendo is set differently according to user behavior information.

It is apparent to those skilled in the art that various changes and modifications are possible in the present invention without departing from the spirit or scope of the present invention. Accordingly, the present invention is intended to cover modifications and variations of the present invention provided within the appended claims and their equivalents.

Claims

In the wearable device,

A sensing unit for sensing user behavior;

A communication unit for transmitting and receiving data with an external device connected to the wearable device;

Controls the sensing unit to sense the user behavior for a predetermined time,

Generates first user behavior information based on the sensed user behavior,

Differently set the fall detection sensitivity according to the generated first user behavior information,

Controls the sensing unit to sense user actions at predetermined periodic intervals,

Generates second user behavior information based on the sensed user behavior,

A control unit that determines whether to adjust the fall detection sensitivity based on the generated second user behavior information

Wearable device comprising a.
The method of claim 1, wherein the first user behavior information includes walking speed information, and includes at least one of posture conversion information, balance information, and quickness information.

Wearable device.
The method of claim 2, wherein the control unit

Differently setting weights of the walking speed information, the posture conversion information, the balance information, and the quickness information

Wearable device.
The method of claim 2, wherein the control unit

When the walking speed is less than the first speed, the fall detection sensitivity is set to the first sensitivity,

When the walking speed is greater than or equal to the first speed and less than the second speed, the fall detection sensitivity is set to a second sensitivity,

When the walking speed is more than the second speed and less than the third speed, the fall detection sensitivity is set to a third sensitivity,

When the user's walking speed is greater than or equal to the third speed, setting the fall detection sensitivity to a fourth sensitivity,

Wearable device.
The method of claim 1, wherein the control unit

The faster the walking speed, the larger the magnitude of the impact amount corresponding to the fall detection sensitivity is set,

Setting a longer static period corresponding to the fall detection sensitivity as the walking speed increases,

Wearable device.
The method of claim 1, wherein the control unit

The slower the walking speed, the smaller the size of the impact amount corresponding to the fall detection sensitivity is set,

The slower the walking speed is, the shorter the static period corresponding to the fall detection sensitivity is set,

Wearable device.
The method of claim 1, wherein the controller 180

If the absolute value of the difference between the current period fall detection sensitivity error rate and the previous period fall detection sensitivity error rate is more than the first error rate threshold, adjust the current fall detection sensitivity,

If the absolute value of the difference between the current period fall detection sensitivity error rate and the previous period fall detection sensitivity error rate is less than a first error rate threshold value, maintaining the current fall detection sensitivity,

Wearable device.
The method of claim 1, wherein the control unit

If the user's hand shake measured by the sensing unit includes a specific pattern, the mode of the wearable device is changed from a first mode meaning a general mode to a second mode indicating that the user has a specific disease,

When the amount of impact sensed by the sensing unit exceeds a preset amount of impact, setting a criterion corresponding to the fall detection sensitivity different from the criterion of the first mode,

Wearable device.
The method of claim 8, wherein the control unit

Setting the acceleration signal of the second mode to be different from the acceleration signal of the first mode,

Wearable device.
The method of claim 1,

The sensing unit includes a wearing detection sensor,

The control unit,

If the physical quantity sensed by the wearing detection sensor is within a predetermined range, it is determined that the user wears the wearable device,

If the physical quantity sensed by the wearing detection sensor is more than a predetermined range, determining that the user does not wear the wearable device,

Wearable device.
In the control method of a wearable device,

Controlling a sensing unit to sense a user's behavior for a predetermined time;

Generating first user behavior information based on the sensed user behavior;

Setting a fall detection sensitivity differently according to the generated first user behavior information;

Controlling the sensing unit to sense a user action at a predetermined periodic interval;

Generating second user behavior information based on the sensed user behavior; And

Determining whether to adjust the fall detection sensitivity based on the generated second user behavior information

Control method of a wearable device comprising a.
The method of claim 11, wherein the first user behavior information includes walking speed information, and includes at least one of posture conversion information, balance information, and quickness information.

Control method of wearable device.
The method of claim 12,

Further comprising differently setting weights of the walking speed information, the posture conversion information, the balance information, and the quickness information,

Control method of wearable device.
The method of claim 12,

If the walking speed is less than the first speed, setting the fall detection sensitivity to the first sensitivity;

When the walking speed is greater than or equal to the first speed and less than the second speed, setting the fall detection sensitivity to a second sensitivity;

Setting the fall detection sensitivity to a third sensitivity when the walking speed is greater than or equal to the second speed and less than the third speed; And

When the user's walking speed is greater than or equal to the third speed, further comprising the step of setting the fall detection sensitivity to a fourth sensitivity,

Control method of wearable device.
The method of claim 11,

Setting a magnitude of an impulse corresponding to the fall detection sensitivity as the walking speed increases; And

The step of setting a longer static period corresponding to the fall detection sensitivity as the walking speed increases,

Control method of wearable device.
The method of claim 11,

Setting the size of the amount of impact corresponding to the fall detection sensitivity to be smaller as the walking speed is slower; And

The slower the walking speed, the shorter the static period corresponding to the fall detection sensitivity is set.

Control method of wearable device.
The method of claim 11,

If the absolute value of the difference between the current period fall detection sensitivity error rate and the previous period fall detection sensitivity error rate is greater than or equal to the first error rate threshold value, adjusting the current fall detection sensitivity; And

If the absolute value of the difference between the current period fall detection sensitivity error rate and the previous period fall detection sensitivity error rate is less than a first error rate threshold, maintaining the current fall detection sensitivity,

Control method of wearable device.
The method of claim 11,

If the user's hand shake measured by the sensing unit includes a specific pattern, changing a mode of the wearable device from a first mode indicating a general mode to a second mode indicating that the user has a specific disease; And

If the amount of impact sensed by the sensing unit exceeds a preset amount of impact, further comprising setting a criterion corresponding to the fall detection sensitivity different from the criterion of the first mode,

Control method of wearable device.
The method of claim 18,

Further comprising setting the acceleration signal of the second mode to be different from the acceleration signal of the first mode,

Control method of wearable device.
The method of claim 11,

Determining that the user wears the wearable device if the physical quantity sensed by the wearing detection sensor is within a predetermined range; And

If the physical quantity sensed by the wearing detection sensor is greater than or equal to a predetermined range, determining that the user does not wear the wearable device,

Control method of wearable device.