IoT(Internet of Things) device control system

Abstract

An IoT device control system is disclosed. The IoT device control system comprises: a plurality of access points (APs) arranged at predetermined intervals to form a WiFi network indoors; a plurality of IoT (Internet of Things) devices connected to the WiFi network indoors through the plurality of access points and measuring the received signal strength for each of the plurality of access points; a user terminal connected to the WiFi network indoors through the plurality of access points and measuring the received signal strength for each of the plurality of access points and recognizing a gesture and a direction of orientation; and a control server connected to the WiFi network through the plurality of access points, which, upon receiving a gesture and a direction of orientation from the user terminal, determines an IoT device desired by the user among the plurality of IoT devices using the received direction of orientation and controls the determined IoT device according to a control command set in the gesture.

Description

Technology Field

[0001] The present invention relates to an IoT device control system. Background Technology

[0002] The term IoT, or the Internet of Things, refers to a common network of connected devices and the technology that facilitates communication between devices, the cloud, and between devices themselves. Thanks to the advent of affordable computer chips and high-bandwidth communication, billions of devices are now connected to the internet. This means that everyday devices such as toothbrushes, vacuum cleaners, cars, and machinery can use sensors to collect data and respond intelligently to users. As these everyday peripherals become smarter, we have been able to enjoy a much more convenient life.

[0003] An IoT network can be used to connect various electronic devices within a home and to remotely control the connected electronic devices. For example, a user can remotely control various objects connected via the IoT network using an electronic device that includes a processor and a communication interface. For instance, the electronic device can control at least one object based on a voice command received from the user.

[0004] Various problems may arise when controlling multiple objects connected through such IoT networks. For example, a single home may contain multiple lights or sound devices that can be connected via an IoT network. In such cases, to control a specific object, the user needs to input a command into the electronic device that is distinct from other objects that are identical or similar in type, name, or function. For instance, when a user's voice command such as "Turn on the light" is received by the electronic device, the device may struggle to determine which of the multiple lights connected to the IoT network should be turned on. In this case, the electronic device may turn on a light different from the user's intention. Furthermore, voice commands may not be recognized depending on the surrounding environment. Prior art literature

[0005] Korean Patent Publication No. 10-1879861 (July 12, 2018) The problem to be solved

[0006] The present invention aims to provide an IoT device control system that accurately controls an IoT device desired by a user among a plurality of IoT (Internet of Things) devices present indoors through indoor location identification and gesture recognition using the WiFi signal strength of a user terminal. means of solving the problem

[0007] According to one aspect of the present invention, an IoT device control system installed indoors is disclosed.

[0008] An IoT device control system according to an embodiment of the present invention comprises: a plurality of access points (APs) arranged at predetermined intervals to form a WiFi network in the indoor space; a plurality of IoT (Internet of Things) devices connected to the WiFi network in the indoor space through the plurality of access points and measuring the signal strength for each of the plurality of access points; a user terminal connected to the WiFi network in the indoor space through the plurality of access points and measuring the signal strength for each of the plurality of access points and recognizing a gesture and a direction of orientation; and a control server connected to the WiFi network through the plurality of access points, which, upon receiving the gesture and the direction of orientation from the user terminal, determines an IoT device desired by the user among the plurality of IoT devices using the received direction of orientation and controls the determined IoT device according to a control command set in the gesture.

[0009] The control server determines the indoor location of the plurality of IoT devices by comparing the received signal strengths for each of the plurality of access points measured by the plurality of IoT devices with a previously stored indoor received signal strength map.

[0010] The above received signal strength map is generated by dividing the indoor space into a plurality of grid areas of a predetermined size using a previously created indoor map, measuring the signal strength received from each access point in each of the divided plurality of grid areas, and mapping the generated received signal strengths for each grid area to each grid area.

[0011] When the user holds the user terminal, performs the gesture, and points toward a desired IoT device among the plurality of IoT devices, the user terminal transmits the recognized gesture and direction of orientation, as well as the received signal strength for each of the plurality of access points measured by the user terminal, to the control server.

[0012] The control server determines the indoor location of the user terminal by comparing the received signal strength of a plurality of access points measured by the user terminal with the previously stored indoor received signal strength map, determines an IoT device located in the direction of orientation based on the determined indoor location of the user terminal as a control target, and controls the IoT device determined as a control target according to the control command set in the gesture. Effects of the invention

[0013] An IoT device control system according to an embodiment of the present invention can accurately control an IoT device desired by a user among a plurality of IoT (Internet of Things) devices present indoors by identifying the indoor location using the WiFi signal strength of a user terminal and recognizing gestures. Brief explanation of the drawing

[0014] FIG. 1 is a diagram schematically illustrating the configuration of an IoT device control system according to an embodiment of the present invention. FIG. 2 is a diagram schematically illustrating the operation concept of an IoT device control system according to an embodiment of the present invention. FIG. 3 is a diagram schematically illustrating a control concept through gesture recognition of an IoT device control system according to an embodiment of the present invention. FIG. 4 is a diagram schematically illustrating a control concept through indoor location identification of an IoT device control system according to an embodiment of the present invention. Specific details for implementing the invention

[0015] As used in this specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "composed" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be excluded, or that additional components or steps may be included. Furthermore, terms such as "...part," "module," etc., as used in the specification refer to a unit that processes at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software.

[0016] Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings.

[0017] FIG. 1 is a diagram schematically illustrating the configuration of an IoT device control system according to an embodiment of the present invention, FIG. 2 is a diagram schematically illustrating the operation concept of an IoT device control system according to an embodiment of the present invention, FIG. 3 is a diagram schematically illustrating the control concept through gesture recognition of an IoT device control system according to an embodiment of the present invention, and FIG. 4 is a diagram schematically illustrating the control concept through indoor location identification of an IoT device control system according to an embodiment of the present invention. Hereinafter, an IoT device control system according to an embodiment of the present invention will be described with reference to FIG. 1, and FIG. 2 to FIG. 4.

[0018] Referring to FIG. 1, an IoT device control system according to an embodiment of the present invention may be configured to include a plurality of access points (AP) (100), a plurality of IoT (Internet of Things) devices (200), a user terminal (300), and a control server (400).

[0019] Multiple access points (100) are arranged at preset intervals to form a WiFi network indoors.

[0020] Multiple IoT devices (200) are connected to a Wi-Fi network indoors through multiple access points (100). For example, the multiple IoT devices (200) may be lighting devices equipped with communication functions such as Wi-Fi and Bluetooth, as shown in FIG. 2.

[0021] In addition, multiple IoT devices (200) can measure the signal strength for each access point (100) as shown in FIG. 2 to determine indoor locations and transmit it to a control server (400) to be described later.

[0022] The user terminal (300) is a user terminal located indoors and is connected to a Wi-Fi network indoors through a plurality of access points (100). For example, the user terminal (300) may be a smartphone equipped with communication functions such as Wi-Fi and Bluetooth, and various sensors such as a gyroscope sensor and an accelerometer sensor.

[0023] And, in order to determine the indoor location, the user terminal (300) can measure the received signal strength for each of the multiple access points (100) as shown in FIG. 2 and transmit it to the control server (400) to be described later.

[0024] In addition, the user terminal (300) can recognize the gesture and orientation direction performed by the user while holding the user terminal (300) and transmit them to the control server (400) to be described later, in order to control the IoT device (200) desired by the user among a plurality of IoT devices (200). Here, the orientation direction is the direction pointing toward the IoT device (200) desired by the user, and a control command for the IoT device (200) may be pre-set in the gesture.

[0025] For example, as illustrated in FIG. 3, the user terminal (300) can recognize the gesture and orientation of the user terminal (300) using a gyroscope sensor and an accelerometer sensor with respect to the IoT device (200) desired by the user.

[0026] The control server (400) is connected to a Wi-Fi network through a plurality of access points (100) and communicates with a plurality of IoT devices (200) and user terminals (300).

[0027] And, when the control server (400) receives a gesture and a direction of orientation from the user terminal (300), it determines the IoT device (200) desired by the user among a plurality of IoT devices (200) using the received direction of orientation, and controls the determined IoT device (200) according to the control command set in the gesture.

[0028] To this end, the control server (400) can determine the indoor location of the multiple IoT devices (200) by comparing the received signal strength of each access point (100) measured by the multiple IoT devices (200) with a previously stored indoor received signal strength map, and can determine the indoor location of the user terminal (300) by comparing the received signal strength of each access point (100) measured by the user terminal (300) with a previously stored indoor received signal strength map.

[0029] Here, the received signal strength map can be generated by dividing the indoor space into a plurality of grid areas of a predetermined size using an indoor map created using SLAM (Simultaneous Localization and Mapping) technology as shown in FIG. 4, and by measuring the signal strength received from each access point (100) in each of the divided plurality of grid areas and mapping the received signal strength for each grid area to each grid area.

[0030] That is, when a user holds the user terminal (300) and performs a gesture as shown in FIG. 3 and points to a desired IoT device (200) among a plurality of IoT devices (200), the user terminal (300) can transmit the gesture and direction of orientation recognized through various sensors and the signal strength received by each of the plurality of access points (100) to the control server (400).

[0031] Accordingly, the control server (400) determines the indoor location of the user terminal (300) by comparing the received signal strength of each access point (100) received as shown in FIG. 4 with a previously stored indoor signal strength map, determines the IoT device (200) located in the direction of the user terminal (300) based on the determined indoor location of the user terminal (300) as a control target, and can control the IoT device (200) determined as a control target according to a control command set in a gesture.

[0032] The embodiments of the present invention described above are disclosed for illustrative purposes only, and those skilled in the art with ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention, and such modifications, changes, and additions should be considered to fall within the scope of the following claims. Explanation of the symbols

[0033] 100: Multiple Access Points (AP) 200: Multiple IoT (Internet of Things) devices 300: User terminal 400: Control Server

Claims

Claim 1 An IoT device control system installed indoors, comprising: a plurality of access points (APs) arranged at predetermined intervals to form a WiFi network in the indoors; a plurality of IoT (Internet of Things) devices connected to the WiFi network in the indoors through the plurality of access points and measuring the signal strength for each of the plurality of access points; and a user terminal connected to the WiFi network in the indoors through the plurality of access points, measuring the signal strength for each of the plurality of access points, and recognizing gestures and orientation directions.The control server is connected to the Wi-Fi network through the plurality of access points and, upon receiving the gesture and the direction of orientation from the user terminal, determines the IoT device desired by the user among the plurality of IoT devices using the received direction of orientation, and controls the determined IoT device according to a control command set in the gesture. The control server determines the indoor location of the plurality of IoT devices by comparing the received signal strengths for each of the plurality of access points measured by the plurality of IoT devices with a previously stored indoor signal strength map. The received signal strength map is generated by dividing the indoor space into a plurality of grid areas of a predetermined size using a previously created indoor map, measuring the signal strength received from each access point in each of the divided plurality of grid areas, and mapping the generated received signal strengths for each grid area to each grid area. When the user holds the user terminal, performs the gesture, and points toward the desired IoT device among the plurality of IoT devices, the user terminal transmits the recognized gesture and direction of orientation and the received signal strengths for each of the plurality of access points measured by the user terminal to the control server. The control server then uses the received signal strengths for each of the plurality of access points measured by the user terminal and the An IoT device control system characterized by determining the indoor location of the user terminal by comparing a stored indoor received signal strength map, determining an IoT device located in the direction based on the determined indoor location of the user terminal as a control target, and controlling the IoT device determined as a control target according to a control command set in the gesture. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete

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