KR20230147437A - Object-reactive energy IoT system and method for operating the same - Google Patents

Abstract

The present invention includes a sensing unit that generates an FMCW radar signal in a predetermined detection area and then outputs a reflected signal for the FMCW radar signal, and a program for generating object detection information using the reflected signal output from the sensing unit. It includes an IoT sensor device having a control unit that transmits object detection information to an external server, and an energy storage device that is charged with power using renewable energy and supplies the charged power to the IoT sensor device. An object-responsive energy IoT system can be provided.
This project (result) is the result of a local innovation project based on local government-university cooperation conducted in 2021 with the support of the National Research Foundation of Korea with funds from the Ministry of Education. (1345341782)
This results was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea(NRF) funded by the Ministry of Education(MOE)(1345341782)

Description

Object-reactive energy IoT system and method for operating the same}

The present invention relates to an IoT system that operates in response to objects and a method of operating the same.

IoT (Internet of Things) is a technology that connects various objects to the Internet by embedding sensors and communication functions. In other words, it refers to a technology that connects various objects through wireless communication. Here, objects can refer to various embedded systems such as home appliances, mobile equipment, and wearable devices.

Sensors using the Internet of Things (hereinafter referred to as 'IoT sensors') are currently being used in various fields such as mountainous areas, rural areas, and transportation.

For example, IoT sensors can be used to send out warning broadcasts when a visitor enters an access control area, or can be used for pedestrian recognition smart traffic lights domestically and internationally as a related technology in the transportation field.

However, in order for IoT sensors to be applied, power supply to the IoT sensors must be smoothly provided. To this end, wiring for power supply is essential in order to apply IoT sensors to a location, which causes difficulties in work, and when using batteries, the battery must be properly supplied. There is a problem in that replacement costs increase due to rapid consumption.

Additionally, in the case of smart traffic lights equipped with detection sensors to identify passers-by based on video analysis, there are problems with rapid battery consumption and the need for additional manpower due to inaccurate detection sensors.

Republic of Korea Patent No. 10-2069094 (registered on January 16, 2020)

The present invention implements an IoT sensor to detect objects using FMCW radar signals, and provides an object-responsive energy IoT system and method of operating the same that use renewable energy as the power required for the operation of the IoT sensor.

In addition, the present invention provides an object-responsive energy IoT system and a method of operating the same, including a communication interface capable of transmitting object information about an FMCW radar signal received upon detection of an object to an external server.

As a technical means for achieving the above-described technical problem, the object-responsive energy IoT system according to an embodiment of the present invention generates an FMCW radar signal in a predetermined detection area and then outputs a reflected signal for the FMCW radar signal. An IoT sensor device including a control unit with a program for generating object detection information using a reflected signal output from the sensing unit, and a communication unit for transmitting object detection information to an external server, and renewable energy It may be charged with power and may include an energy storage device for supplying the charged power to an IoT sensor device.

According to an embodiment of the present invention, the object-responsive energy IoT system includes a switching unit installed between the IoT sensor device and the energy storage device to control the connection between the energy storage device and the IoT sensor device based on a switching control signal. The control unit may further include a power control module that applies the switching control signal to the switching unit based on a preset power control policy.

According to an embodiment of the present invention, the program collects charge/discharge status information for the energy storage device along with the object detection information and transmits it to a server through the communication unit, and the server collects the object detection information and charge/discharge status information. After creating a power control policy using the information, it can be transmitted and set to the IoT sensor device through a communication network.

According to an embodiment of the present invention, the program stores charging and discharging state information of the energy storage device in a memory along with object detection information, and when transmission of data stored in the memory is necessary, it sends the information to the communication unit to activate the communication unit. A switching control signal can be applied to the switching unit so that power is supplied.

As a technical means for achieving the above-described technical problem, the method of operating an object-responsive energy IoT system according to an embodiment of the present invention includes the characteristic value of the sensing unit and the specification information of the structure where the IoT sensor device is installed in the server. calculating the installation angle of the IoT sensor device using the server, collecting object detection information generated through the IoT sensor device installed according to the installation angle and charging/discharging state information of the energy storage device in the server; , Generating a power control policy based on the collected object detection information and charging/discharging state information and then transmitting and setting it to the IoT sensor device, and setting the energy storage device and the IoT based on the power control policy. The connection between sensor devices is controlled so that the IoT sensor device can receive power from the energy storage device.

According to an embodiment of the present invention, the method of operating the object-responsive energy IoT system stores the object detection information in a program in the IoT sensor device as well as the charging and discharging state information of the energy storage device in memory, and the object detection It further includes the step of checking charging and discharging status information of the energy storage device and storing it in the memory when information is generated a preset number of times, wherein the collecting step involves transmitting data stored in the memory from the IoT sensor device. Data can be received and collected from the IoT sensor device based on the required time.

According to an embodiment of the present invention, the point at which transmission of the data is necessary may be when the amount of data stored in the memory is greater than or equal to a preset data amount or when the number of generated object detection information is greater than or equal to a preset number.

According to the above-described embodiment of the present invention, the accuracy of object detection can be improved by implementing an IoT sensor to detect objects using FMCW radar signals.

In addition, according to the above-described embodiment of the present invention, by using renewable energy as the power required for the operation of the IoT sensor, not only is it possible to supply stable power to the IoT sensor, but it is also possible to supply power to the IoT sensor without a separate power facility. .

In addition, according to the above-described embodiment of the present invention, it is possible to collect big data related to the object by providing a communication interface that can transmit object information about the FMCW radar signal received according to the detection of the object to an external server.

Figure 1 is a diagram showing the overall configuration of an object-responsive energy IoT system according to an embodiment of the present invention.
Figure 2 is a diagram for explaining the configuration of an IoT sensor device according to an embodiment of the present invention.
Figure 3 is a flowchart showing the operation process of an object-responsive IoT energy system according to an embodiment of the present invention.
Figure 4 is a flowchart showing the operation process of an object-responsive IoT energy system according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The detailed description below is provided to provide a comprehensive understanding of the methods, devices and/or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, if it is determined that a detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification. The terminology used in the detailed description is merely for describing embodiments of the present invention and should in no way be limiting. Unless explicitly stated otherwise, singular forms include plural meanings. In this description, expressions such as “comprising” or “comprising” are intended to indicate certain features, numbers, steps, operations, elements, parts or combinations thereof, and one or more than those described. It should not be construed to exclude the existence or possibility of any other characteristic, number, step, operation, element, or part or combination thereof.

Hereinafter, an object-responsive energy IoT system and its operating method according to an embodiment of the present invention will be described with reference to the attached drawings.

In the case of the embodiment of the present invention, for convenience of explanation, the object will be described using a person as an example.

In addition, the embodiments of the present invention are described using solar energy as an energy source, but are not limited thereto. In other words, renewable energy for charging power to an energy storage device can be achieved through a combination of solar energy, wind power, etc.

FIG. 1 is a diagram illustrating the overall configuration of an object-responsive energy IoT system according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating the configuration of an IoT sensor device according to an embodiment of the present invention.

As shown in Figures 1 and 2, the object-responsive energy IoT system includes a solar panel 10, an energy storage device 20 in which power produced by the solar panel 10 is stored, and a person as an object. It may be composed of an IoT sensor device 100 for sensing, a web server 200 connected to the IoT sensor device 100 through a communication network 30, etc.

The energy storage device 20 according to an embodiment of the present invention is an ESS (Energy Storage System), which is connected to a solar panel 10 that converts renewable energy, such as solar energy, into electrical energy and outputs direct current power. It can be supplied and recharged.

Additionally, the energy storage device 20 may supply charged power to the IoT sensor device 100 to operate the IoT sensor device 100.

In addition, the energy storage device 20 may be equipped with an EMS (Energy Management System) that manages information about the state of charged power and the discharge state of the charged power, and charges at preset time intervals using the EMS. Discharge status information may be provided to the IoT sensor device 100.

The IoT sensor device 100 according to an embodiment of the present invention is a device that uses an FMCW radar signal, and can generate object detection information as an object is detected and then transmit it to the web server 200 connected through the communication network 30. there is.

To this end, the IoT sensor device 100 according to an embodiment of the present invention may include a sensing unit 110, a control unit 120, a communication unit 130, etc., as shown in FIG. 2.

The sensing unit 110 may irradiate the FMCW radar signal to the detection area and then receive a reflected signal therefrom. That is, the sensing unit 110 may be comprised of a transmission module 112 that generates an FMCW radar signal and a reception module 114 that receives a reflected signal reflected by an object.

As the reflected signal is received through the receiving module 114, the sensing unit 110 may provide it to the control unit 120.

As the reflected signal is received through the receiving module 114, the control unit 120 may generate object detection information by analyzing the reflected signal. Here, the object detection information may be generated by a program (not shown) stored in a memory (not shown) in a form executable by at least one processor (not shown) in the control unit 120. In other words, as the reflected signal is received, the program can analyze it to generate object detection information and then store it in memory.

In particular, the program in the control unit 120 according to an embodiment of the present invention is implemented using a library and API, and applies filtering and a digital filter algorithm based on analysis of the characteristics of reflected signals (i.e., radar raw data) to achieve maximum range of 14m. It may be possible to simultaneously measure object responses and at least five or more objects within a distance of above (i.e., a 14m radius from the structure where the IoT sensor device 100 is installed). Specifically, the program receives radar raw data, which is a reflected signal, determines whether an object is detected through peak point analysis, generates object detection information, and stores matching data that matches the object detection information and the time information at which the object is detected. You can save it.

Additionally, the control unit 120 may transmit the object detection information stored in the memory to the communication network 30 through the communication unit 130 at a preset period and transmit it to the external web server 200.

In addition, the control unit 120 periodically checks the amount of data of object detection information stored in the memory, and when it is determined as a result of the check that data corresponding to object detection information larger than a preset size is stored in the memory, it activates the communication unit 130 Object detection information stored in memory can be transmitted to an external web server 200. Here, activation of the communication unit 130 may be achieved through power supply.

Additionally, the program in the control unit 120 can be activated by supplying power to the IoT sensor device 100 based on a power control policy set by the web server 200, for example, operation cycle information.

That is, the control unit 120 of the IoT sensor device 100 according to an embodiment of the present invention may further include a power control module 122 to control power supply or selectively activate the communication unit 130 based on the operation cycle. You can.

The power control module 122 may generate a switching control signal to control the switching unit 140 installed between the energy storage device 20 and the IoT sensor device 100. That is, the power control module 122 may generate a switching control signal to selectively control the supply of power stored in the energy storage device 20 to the IoT sensor device 100.

For example, when the IoT sensor device 100 operates based on an operation cycle, the power control module 122 receives power from the energy storage device 20 when it is determined that the operation cycle has been reached through a time check. By applying a switching control signal to the switching unit 140, the power stored in the energy storage device 20 can be supplied to the IoT sensor device 100 to operate the IoT sensor device 100.

In addition, the power control module 122 determines when transmission of object detection information stored in the memory is necessary, that is, when the amount of data stored in the memory is greater than a preset amount through monitoring of the memory, it determines when transmission is necessary, and determines when transmission is necessary, and the communication unit 130 ) A switching control signal can be applied to the switching unit 140 so that power is supplied.

The communication unit 130 is a communication interface for connecting the IoT sensor device 100 to the communication network 30 consisting of a wired or wireless network. For example, it is a communication interface that allows access to WiFi, LTE, 5G, the Internet, etc. You can.

This communication unit 130 operates by selectively receiving power from the energy storage device 20 by the power control module 122, and according to its operation, object detection information stored in the memory is sent to a web server connected through the communication network 30. It can be sent to (200).

The IoT sensor device 100 according to the embodiment of the present invention as described above may be installed in a specific structure, and the installation angle may be determined based on the characteristic value of the sensing unit 110 and installed in the specific structure. That is, after determining the installation angle by considering the horizontal and vertical field of view (FoV) of the sensing unit 110 and the response characteristics of the antenna, the IoT sensor device 100 can be installed in a specific structure based on this. To this end, the web server 200 according to an embodiment of the present invention has a function for setting the installation angle of the IoT sensor device 100, that is, inputting characteristic values of the sensing unit 110 in the IoT sensor device 100. It provides an interface that can be installed, and can be equipped with a function that can provide optimal installation angle information based on characteristic values input through the interface.

In addition, the web server 200 according to an embodiment of the present invention receives object detection information from the IoT sensor device 100, and provides an object response cycle of the IoT sensor device 100 in the area where the IoT sensor device 100 is installed, Big data such as the number of responses per time period is collected, and based on the collected big data, information related to the operation cycle of the IoT sensor device 100 (hereinafter referred to as 'operation cycle information') is sent to the IoT sensor device 100. You can set it by sending it. Accordingly, the IoT sensor device 100 may be activated based on operation cycle information to generate object detection information.

Meanwhile, the control unit 120 of the IoT sensor device 100 according to an embodiment of the present invention sends charging and discharging state information corresponding to the energy charging and discharging states of the energy storage device 20 to the EMS of the energy storage device 20. It is provided from and stored in memory, and charge/discharge status information along with object detection information can also be transmitted to the web server 200. Accordingly, the web server 200 can check whether stable operation of the IoT sensor device 100 is possible by collecting charge/discharge status information of the energy storage device 20.

That is, the web server 200 checks the operating time of the IoT sensor device 100 based on the charging state information for each time zone, and checks the power usage of the IoT sensor device 100 based on the discharge state information for each time zone. It may be determined whether power required for operation of the IoT sensor device 100 is available.

In addition, the web server 200 generates a power control policy including operation cycle information of the IoT sensor device 100 through collection of object detection information with matching charging and discharging status information and time information for each time zone, and then sends it to the IoT sensor device. You can set it by sending it to (100). In this case, the control unit 120 of the IoT sensor device 100 may control power supply to the IoT sensor device 100 based on the power control policy.

Hereinafter, the operation process of the object-responsive IoT energy system according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4.

Figure 3 is a flowchart showing the operation process of an object-responsive IoT energy system according to an embodiment of the present invention.

As shown in FIG. 3, as the characteristic value for the sensing unit 110 of the IoT sensor device 100 is input (S300) through the interface provided by the web server 200, the web server 200 generates a specific structure. Information on the installation angle of the IoT sensor device 100 is calculated and provided (S302). At this time, not only the characteristic values of the sensing unit 110 but also specification information (eg, size information) for a specific structure can be input through the interface.

Accordingly, the IoT sensor device 100 is installed in a specific structure (S304).

Thereafter, the IoT sensor device 100 generates charge/discharge status information of power in the energy storage device 20 along with object detection information and transmits this to the web server 200 (S306).

Accordingly, the web server 200 collects object detection information and charge/discharge status information for a preset period, creates a power control policy based on the collected object detection information and charge/discharge status information, and then sends it to the IoT sensor device ( 100) and set it (S308). Here, the power control policy may be information corresponding to the time required to activate the IoT sensor device 100, that is, the operation cycle.

Afterwards, the power control module 122 of the IoT sensor device 100 performs power supply control to the IoT sensor device 100 based on the power control policy (S310). That is, the power control module 122 can control the connection between the energy storage device 20 and the IoT sensor device 100 by generating a switching control signal to the switching unit 140 based on the power control policy.

Figure 4 is a flowchart showing the operation process of an object-responsive IoT energy system according to another embodiment of the present invention.

As shown in FIG. 4, the control unit 120 of the IoT sensor device 100 drives a program as a reflected signal is received (S400) through the receiving module 114 of the sensing unit 110 (S402).

Accordingly, the program of the control unit 120 generates object detection information through analysis of the reflected signal, for example, peak point analysis using the waveform of radar raw data corresponding to the reflected signal, and stores it in the memory (S404). At this time, the program may check not only the object detection information but also the charge/discharge status information of the energy storage device 20 and store them in the memory.

Afterwards, the program of the control unit 120 determines whether transmission of data stored in the memory is necessary (S406). At this time, a determination as to whether data transmission is necessary can be made by checking whether the amount of data stored in the memory is more than a preset data amount, by the number of object detection information generated, or by a set time. When determining whether data transmission is necessary based on the set time, it can be done based on time information in the IoT sensor device 100, and when determining whether data transmission is necessary based on the number of object detection information generated, object detection information is generated. Whenever possible, it can be done based on the counter value obtained through counting.

As a result of the determination in S406, if data transmission is necessary, the program of the control unit 120 activates the communication unit 130 by supplying power to the communication unit 130 through the power control module 122 (S408), and the communication unit 130 Data stored in the memory is transmitted to the web server 200 through activation (S410).

Meanwhile, combinations of each block in the attached block diagram and each step in the flow diagram may be performed by computer program instructions. Since these computer program instructions can be mounted on the processor of a general-purpose computer, special-purpose computer, or other programmable data processing equipment, the instructions performed through the processor of the computer or other programmable data processing equipment are described in each block of the block diagram. It creates the means to perform functions.

These computer program instructions can be stored in a computer-readable or computer-readable recording medium (or memory) that can be directed to a computer or other programmable data processing equipment to implement a function in a specific way, so that the computer can be used. Alternatively, instructions stored in a computer-readable recording medium (or memory) can produce manufactured items containing instruction means that perform the functions described in each block of the block diagram.

In addition, computer program instructions can be mounted on a computer or other programmable data processing equipment, so a series of operation steps are performed on the computer or other programmable data processing equipment to create a process that is executed by the computer and run on the computer or other program. Instructions that perform possible data processing equipment may also provide steps for executing the functions described in each block of the block diagram.

Additionally, each block may represent a module, segment, or portion of code that includes at least one or more executable instructions for executing specified logical function(s). Additionally, it should be noted that in some alternative embodiments it is possible for the functions mentioned in the blocks to occur out of order. For example, it is possible for two blocks shown in succession to be performed substantially at the same time, or it is possible for the blocks to be performed in reverse order depending on the corresponding function.

10: solar panel
20: Energy storage device
30: communication network
100: IoT sensor device
200: web server

Claims (6)

A sensing unit that generates an FMCW radar signal in a predetermined detection area and then outputs a reflected signal for the FMCW radar signal, a control unit including a program for generating object detection information using the reflected signal output from the sensing unit, and An IoT sensor device including a communication unit for transmitting object detection information to an external server,
An object-responsive energy IoT system that is charged with power using renewable energy and includes an energy storage device for supplying the charged power to an IoT sensor device.
According to paragraph 1,
The object-responsive energy IoT system is,
It further includes a switching unit installed between the IoT sensor device and the energy storage device to control the connection between the energy storage device and the IoT sensor device based on a switching control signal,
The control unit,
An object-responsive energy IoT system further comprising a power control module that applies the switching control signal to the switching unit based on a preset power control policy.
According to paragraph 2,
The above program is,
In addition to the object detection information, charge/discharge status information for the energy storage device is collected and transmitted to the server through the communication unit,
The server is,
An object-responsive energy IoT system that creates a power control policy using the object detection information and charge/discharge status information and then transmits and sets it to the IoT sensor device through a communication network.
According to paragraph 2,
The program stores charging and discharging status information of the energy storage device in a memory along with object detection information, and when transmission of data stored in the memory is necessary, the program switches to the switching unit to supply power to the communication unit to activate the communication unit. An object-responsive energy IoT system that applies switching control signals.
A sensing unit that generates an FMCW radar signal in a predetermined detection area and then outputs a reflected signal for the FMCW radar signal, a control unit including a program for generating object detection information using the reflected signal output from the sensing unit, and In the method of operating an object-responsive energy IoT system including an IoT sensor device having a communication unit for transmitting object detection information to an external server and an energy storage device for supplying power to the IoT sensor device,
Calculating an installation angle of the IoT sensor device in the server using characteristic values of the sensing unit and specification information of a structure in which the IoT sensor device is installed;
Collecting object detection information generated through the IoT sensor device installed according to the installation angle and charge/discharge status information of the energy storage device at the server;
It includes creating a power control policy based on the collected object detection information and charging/discharging state information and then transmitting and setting it to the IoT sensor device,
A method of operating an object-responsive energy IoT system in which the connection between an energy storage device and the IoT sensor device is controlled based on the power control policy, and the IoT sensor device receives power from the energy storage device.
According to clause 5,
The method of operating the object-responsive energy IoT system is,
In the IoT sensor device, the program stores the object detection information and the charge/discharge status information of the energy storage device in memory, and when the object detection information is generated a preset number of times, the charge/discharge status information of the energy storage device is stored in the memory. Further comprising the step of checking and storing in the memory,
The collecting step is,
A method of operating an object-responsive energy IoT system that receives and collects data from the IoT sensor device based on the time when the IoT sensor device needs to transmit data stored in the memory.

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