KR102200611B1 - Street light smart control system - Google Patents

Abstract

The present invention checks a power state input from a street light distribution panel and a power state input to an LED lighting device in real time with respect to an existing or newly built LED street light, transmits an operation state of a street light along with location information (GPS information) to a smart control server by using LoRa that is an IoT communication method, stores (DB) content thereof, and analyzes the content to control abnormal operation of a street light, a deterioration state of a lighting device, location and the like in real time through a smart control screen. A system of the present invention comprises: a LoRa client that is installed on a street light and collects a state of the street light and location information to transmit information by using LoRa; a LoRa gateway that organizes information collected from a plurality of street lights and transmits the same to a server for smart control; and a smart control server that stores and treats the collected information to visualize the same, and if necessary, remotely controls power of the street lights. The visualization of the smart control server is manufactured in a responsive web (HTML5) and enables smart control through various devices (PC, tablet, smartphone, etc.).

Description

Street light smart control system {STREET LIGHT SMART CONTROL SYSTEM}

The following embodiments relate to a technology capable of real-time control of the abnormal operation of LED streetlights, lighting device deterioration status, and location through a smart control screen.

As a prior art related to the embodiments, Korean Patent Publication No. 10-2089005 B1 discloses a street light control device. Specifically, the prior literature is installed on the street light, a supply power measuring device for measuring the supply power when the lighting device is operating, and a database storing information on the supply power measured by the supply power measuring device ( DB), and a control device for deriving an output of the lighting device using the power supplied measured from the power supply measuring device, wherein the control device measures the supply power when the lighting device is first operated Disclosed is a street light control device for deriving the output of the lighting device from the power measured from the device, predicting the rated output of the lighting device based on the derived output, and storing the predicted rated output in the database. .

Through this, prior literature provides a technology that can easily derive the rated output of a street light lighting device from information on the power supply when the lighting device first operates, without the need for a manager to go to the site and manually input it. have.

In addition, Korean Patent Publication No. 10-2078841 B1 discloses a control system and method for a smart street light. Specifically, the preceding literature describes the road situation by updating the preset road lighting rating during the design or construction of the road to a new road lighting rating according to the road condition while using the road, and controlling the dimming value of the streetlight according to the new road lighting rating. Disclosed is a system and method capable of improving energy efficiency by minimizing unnecessary energy waste while implementing an optimal road environment, since it is possible to control the illumination of the road accordingly.

However, prior literature does not disclose a method or system that transmits streetlight information to a smart control server using the IoT communication method, LoRa, stores the contents (DB), analyzes, and provides real-time control through the smart control screen. Does not. In addition, the prior literature is based on the operation state information collected in real time according to the voltage and current according to the power supplied to each streetlight and the voltage and current according to the power supplied to the LED lighting device of each streetlight, and the current ZCT of the streetlight. A method or system for analyzing information on whether an abnormality occurs and deterioration status of each street light by synthesizing the measured leakage current information is not disclosed. Further, prior literature discloses a method or system for determining the number of defective LED modules among LED modules included in the street lighting device by using the difference between the rated current of the street light and the actual current supplied to the lighting device of the street light. I never do that.

Accordingly, it is required to implement a technology that transmits streetlight information to a smart control server using LoRa, an IoT communication method, stores the contents (DB), analyzes, and provides real-time control through the smart control screen. In addition, the voltage and current according to the power supplied to each street light and the voltage and current according to the power supplied to the LED lighting device of each street light are collected in real time, and the operating state information, and the leakage measured through the current ZCT of the street light It is required to implement a technology that synthesizes current information and analyzes information on whether an abnormality occurs and deterioration status of each streetlight. Further, there is a need to implement a technology for determining the number of defective LED modules among LED modules included in the street lighting device by using the difference between the rated current of the street light and the actual current supplied to the lighting device of the street light.

Republic of Korea Patent Publication 10-2089005 B1 Republic of Korea Patent Publication 10-2078841 B1 Republic of Korea Patent Publication 10-2073589 B1 Republic of Korea Patent Publication 10-1940907 B1

The embodiments are intended to provide a method or system for transmitting streetlight information to a smart control server using LoRa, an IoT communication method, storing (DB) and analyzing the contents, and providing real-time control through a smart control screen. .

Examples are the voltage and current according to the power supplied to each street light, the voltage and current according to the power supplied to the LED lighting device of each street light, collected in real time, operation state information, and the current measured through ZCT of the street light. It is intended to provide a method or system for analyzing information on whether an abnormality occurs and deterioration status of each street light by synthesizing leakage current information.

The embodiments are intended to provide a method or system for determining the number of defective LED modules among LED modules included in a street lighting device by using a difference between the rated current of a street light and the actual current supplied to the lighting device of the street light. .

Further, the embodiments are intended to provide a method and system for solving the problems mentioned in the background art and the problems of the relevant technical field disclosed in the present specification.

The street light control system according to an embodiment is installed on a street light having an LED lighting device including a plurality of LED modules, and the street light from a street light distribution panel or another street light electrically connected to the street light distribution panel to check the presence or absence of power abnormalities. The voltage and current according to the power supplied to the street light and the operation state information collected in real time according to the voltage and current according to the power supplied to the LED lighting device of the street light, measured through the current ZCT of the street light to measure the effect on harmonics A LoRa Client for wirelessly transmitting street light information including information about a leakage current and location information of a street light to a LoRa gateway using LoRa; It is installed in the street light distribution board, and each street light information transmitted wirelessly through LoRa is obtained from each LoRa Client installed on each street light connected to the street light distribution board, and the information on each street light is smart LoRa Gateway transmitting to the control server; And storing the information on each street light transmitted from the LoRa Gateway, based on a predefined analysis method, based on the operation status information and leakage current information of each street light, whether an abnormality occurs and a deterioration status of each street light. And a smart control server that provides a visual output including whether the abnormality has occurred and the deterioration state information to a web page to which the responsive web is applied.

In the street light control system according to an embodiment, each of the LoRa Clients includes a voltage and a current according to power supplied to each street light from the street light distribution panel or another street light electrically connected to the street light distribution panel, and each street light. Each operating state information collected in real time by voltage and current according to the power supplied to the LED lighting device of, each leakage current information measured through the current ZCT of each street light, and each position of each street light Each street light information including information is transmitted to the LoRa Gateway through wireless transmission using LoRa, and the LoRa Gateway acquires each street light information wirelessly transmitted from each of the LoRa clients, and a smart control server And the smart control server stores the streetlight information obtained from the LoRa Gateway, and based on the predefined analysis method, based on the operation state information and the leakage current information Analyzing the occurrence of an abnormality and deterioration state information of each of the street lights, including the occurrence of each abnormality, the information of each deterioration state, and the location information of each of the street lights in the visual output, and the visual output If the web page to which the responsive web is applied is provided, and the web page to which the responsive web is applied is accessible to a user terminal, and the user terminal accesses the web page to which the responsive web is applied, the monitor of the user terminal is A smart control screen including a visual output is displayed, the smart control screen includes a smart control UI, and the smart control UI includes a power control command UI corresponding to each of the street lights, and the respective power When a user's input is detected in any one of the control command UIs, power control is performed on the street light corresponding to the power control command UI in which the input is detected, and the smart control server analyzes the deterioration state information Silver, when driving a street light, analyze the change trend of the current according to the power supplied to the LED lighting device of the street light, apply the analyzed change trend to a predefined discrimination condition to derive the deterioration state of the street light, and determine the deterioration state of the street light. Accordingly, it includes an operation of determining whether any one or more of the plurality of LED modules included in the LED lighting device of the street light has a failure or deterioration, and the smart control server is based on the respective deterioration state information and the respective leakage current information. By evaluating the function of each of the street lights, the evaluation can be included in the visual output.

According to an embodiment, whether or not an abnormality occurs in each of the streetlights may include whether the respective streetlights are turned off and whether there is a short circuit.

According to an embodiment, the information on the deterioration state of each street light includes whether there is a harmonic effect according to the leakage current of each street light, and the number of LED modules in a fault state among a plurality of LED modules of the LED lighting device included in each street light. , And the number of LED modules that are degraded in performance.

According to an embodiment, the smart control server classifies a first street light corresponding to a predetermined determination condition in which the deterioration state information is determined, obtains a street light rated current of the first street light, and from the street light information of the first street light Obtaining a current supplied to the LED lighting device of the first street light, obtaining a current consumption of one LED module of the LED lighting device included in the first street light, and obtaining a rated current of the first street light and the first street light A value obtained by dividing the difference in current supplied to the LED lighting device by the current consumption of one LED module may be determined by the number of LED modules that are the failure of the first street light.

According to an embodiment, the smart control server acquires the number of a plurality of LED modules of the LED lighting device included in the first street light, and supplies the rated current of the first street light and the LED lighting device of the first street light. A value obtained by dividing the difference in current by the consumption current of one LED module is defined as the number of LED module failure candidates of the first street light, and based on the ratio of the number of failure candidates and the number of LED modules, When the estimated noise of the current supplied to the LED lighting device is calculated, and the error range of the measured noise of the current supplied to the LED lighting device of the first street light and the expected noise is within a predefined error range, the number of failure candidates Is determined by the number of LED modules that are the failure of the first street light, and when the error range exceeds a predefined error range, an integer obtained by rounding the value obtained by dividing the error range by a predefined unit error is used as the failure candidate. A value subtracted from the number may be determined as the number of LED modules that are the failure of the first street light, and twice as much as the integer may be determined as the number of LED modules that are the performance degradation of the first street light.

Embodiments can provide a method or system that transmits streetlight information to a smart control server using LoRa, an IoT communication method, stores the contents (DB), analyzes, and provides real-time control through a smart control screen. have.

Examples are the voltage and current according to the power supplied to each street light, the voltage and current according to the power supplied to the LED lighting device of each street light, collected in real time, operation state information, and the current measured through ZCT of the street light. By synthesizing leakage current information, it is possible to provide a method or system for analyzing information on whether an abnormality occurs and deterioration state of each street light.

The embodiments may provide a method or system for determining the number of defective LED modules among LED modules included in a street lighting device by using a difference between the rated current of a street light and an actual current supplied to the lighting device of the street light. have.

On the other hand, the effects according to the embodiments are not limited to those mentioned above, and other effects that are not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

1 is an exemplary diagram of a configuration of a system according to an embodiment.
2 is a diagram illustrating an operation of a system according to an embodiment.
3 is an exemplary diagram of a configuration of an apparatus according to an embodiment.
4 is a flowchart illustrating an operation of determining the number of failures of an LED module according to an embodiment.
5 is a flowchart illustrating an operation of determining the number of LED module failures and the number of deteriorated LED modules according to an embodiment.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the rights of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes to the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only, and may be changed in various forms and implemented. Accordingly, the embodiments are not limited to a specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical idea.

Although terms such as first or second may be used to describe various components, these terms should be interpreted only for the purpose of distinguishing one component from other components. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

When a component is referred to as being "connected" to another component, it is to be understood that it may be directly connected or connected to the other component, but other components may exist in the middle.

The terms used in the examples are used for illustrative purposes only and should not be interpreted as limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" 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.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc., as shown in the figure It can be used to easily describe the correlation between a component and other components. Spatially relative terms should be understood as terms including different directions of components during use or operation in addition to the directions shown in the drawings. For example, if a component shown in a drawing is turned over, a component described as "below" or "beneath" of another component will be placed "above" the other component. I can. Accordingly, the exemplary term “below” may include both directions below and above. Components may be oriented in other directions, and thus spatially relative terms may be interpreted according to orientation.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the embodiments, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the embodiments, the detailed description thereof will be omitted.

1 is an exemplary diagram of a configuration of a system according to an embodiment.

A system according to an embodiment includes a LoRa Client 1110; LoRa Gateway 120; And it may include a smart control server 100.

The LoRa Client 1110 may be installed on the street light 1100. The street light 1100 may include an LED lighting device 1120. The LED lighting device 1120 may include a plurality of LED modules 1121-1126. For example, as shown in FIG. 1, the LED lighting device 1120 of the street light 1100 may include six LED modules 1121-1126. The number of LED modules of the LED lighting device 1120 may vary depending on the embodiment.

The street light 1100 may be electrically connected to the street light distribution board 20. The street light distribution board 20 may be electrically connected to a plurality of street lights including the street light 1100 shown in FIG. 1 through a power line 1130.

The street light 1100 may be electrically connected to a street light distribution panel 20 or another street light electrically connected to the street light distribution panel 20 through the power line 1130. The street light 1100 may receive power from the street light distribution panel 20 or another street light electrically connected to the street light distribution panel 20 through the power line 1130. That is, the street light 1100 may receive voltage and current from the street light distribution panel 20 or another street light electrically connected to the street light distribution panel 20 through the power line 1130. The power line 1130 may be electrically connected to another street light electrically connected to the street light distribution panel 20 via the street light 1100. Through this, a plurality of streetlights electrically connected to the streetlight distribution panel 20 may receive power.

The LoRa Client 1110 may collect information on the operation state of the street light 1100. The operation state information of the street light 1100 includes voltage and current according to the power supplied to the street light 1100 from the street light distribution panel 20 or another street light electrically connected to the street light distribution panel 20 in order to check whether or not the power is abnormal. It may include a voltage and current according to power supplied to the LED lighting device 1120 of the street light 1100. In order to collect operation status information, the LoRa Client 1110 collects in real time voltage and current according to the power supplied to the street light 1100 from the street light distribution panel 20 or other street light electrically connected to the street light distribution panel 20. I can. In addition, the LoRa Client 1110 may collect voltage and current according to the power supplied to the LED lighting device 1120 of the street light 1100 in real time.

Further, although not shown in FIG. 1, the street light 1100 may include a current zero-phase current transformer (ZCT). The LoRa Client 1110 may collect leakage current information measured through the current ZCT of the street light 1100 in order to measure the effect on harmonics.

In addition, although not shown in FIG. 1, the LoRa Client 1110 may include a GPS module. The GPS module is connected to the body of the LoRa Client (1110) with a cable and can be installed at the top (3m) of the street light. The LoRa Client 1110 may collect location information of the street light 1100 through a GPS module.

Hereinafter, the operation state information, leakage current information, and location information of the street light 1100 collected by the LoRa Client 1110 are collectively referred to as street light information.

The LoRa Client 1110 may include a LoRa antenna 1111. The LoRa antenna 1111 may be connected to the main body of the LoRa Client 1110 with a cable and installed at the top (3m) of the street light. The LoRa Client 1110 may wirelessly transmit streetlight information to the LoRa Gateway 120 through the LoRa antenna 1111 through the LoRa(1) method, which is an IoT communication method.

LoRa(1) is an abbreviation of Long Range and is a word made by combining Lo of Long and Ra of Range. LoRa(1) is a method that was devised because it was difficult to apply to the IoT field with the existing communication equipment as the IoT developed. LoRa(1) is characterized by excellent security and long-distance communication with low power. In other words, LoRa(1) basically provides AES128 security function to configure private network. A module using LoRa(1) can be designed to last up to 10 years with one battery. Also, LoRa(1) has a communication range of about 16KM or more.

The LoRa Gateway 120 may be installed in the street light distribution board 20. The LoRa Gateway 120 can acquire each street light information wirelessly transmitted through LoRa 1 from each LoRa Client (1110, etc.) installed in each street light (1100, etc.) connected to the street light distribution panel 20. have. The LoRa Gateway 120 may transmit information on each street light to the smart control server 100 through wired or wireless.

The smart control server 100 may be its own server owned by a person or organization that manages the streetlight smart control system; May be a cloud server; It may be a peer-to-peer (p2p) set of distributed nodes. The smart control server 100 includes an operation function of a conventional computer; Save/reference function; Input/output function; And it may be configured to perform all or part of the control function. The smart control server 100 may include at least one artificial neural network that performs an inference function. The smart control server 100 may be linked with a web page 130 to which a responsive web is applied. The smart control server 100 may be configured to communicate with the LoRa Gateway 120 by wired or wirelessly.

The smart control server 100 may store each streetlight information transmitted from the LoRa Gateway 120. Each street light information may include operation state information, leakage current information, and location information of each street light as street light information.

The smart control server 100 may analyze whether an abnormality occurs and a deterioration state of each street light based on the operation state information and the leakage current information of each street light based on a predefined analysis method. Whether an abnormality occurs in each streetlight may include whether each streetlight is turned off and whether there is a short circuit. The information on the deterioration state of each street light includes whether or not harmonics are affected by the leakage current of each street light, the number of LED modules in failure among the plurality of LED modules of the LED lighting device included in each street light, and the number of LED modules that are deteriorating performance. May include a number.

The smart control server 100 may provide a visual output including information on whether or not an abnormality of at least one streetlight has occurred and deterioration status information on the web page 130 to which the responsive web is applied. The web page 130 to which the responsive web is applied can be accessed through a user terminal. The web page 130 to which the responsive web is applied may visually display the state of each street light so that users of the user terminal can check it, and may include a control command UI, etc. to cut off the power supplied to the street light where an abnormality has occurred. have.

2 is a diagram illustrating an operation of a system according to an embodiment.

The street light distribution panel 20 may be electrically connected to a plurality of street lights. For example, as shown in FIG. 2, the street light distribution panel 20 may be electrically connected to a plurality of street lights including the first street light 1100, the second street light 1200, and the third street light 1300. The LoRa Gateway 120 may be installed in the street light distribution board 20. The LoRa Client may be installed on each street light electrically connected to the street light distribution panel 20.

It is possible to collect voltage and current according to the power supplied to each street light from each LoRa Client street light distribution panel 20 or another street light electrically connected to the street light distribution panel 20. Each LoRa Client can collect the voltage and current according to the power supplied to the LED lighting device of each street light in real time. Each LoRa Client is a voltage and current according to the power supplied to each street light from the street light distribution panel 20 or other street lights electrically connected to the street light distribution panel 20, and the voltage according to the power supplied to the LED lighting device of each street light. The overcurrent can be collected as information on the operating state of each streetlight.

In addition, each LoRa Client can collect information on each leakage current measured through the current ZCT of each street light. In addition, each LoRa Client may collect location information of each and each street light.

Each LoRa Client may collect information on the operation state of each streetlight, information on leakage current of each streetlight, and location information of each streetlight into streetlight information of each streetlight. Each LoRa Client may transmit street light information of each street light to the LoRa Gateway 120 through wireless transmission using LoRa (1).

The LoRa Gateway 120 may acquire information about each street light wirelessly transmitted from each LoRa Client. LoRa Gateway 120 may transmit each street light information received from each LoRa Client to the smart control server 100.

The smart control server 100 may store each street light information acquired from the LoRa Gateway 120. The smart control server 100 may analyze whether or not an abnormality occurs and deterioration state information of each street light based on each operation state information and each leakage current information, based on a predefined analysis method.

Whether an abnormality occurs in each streetlight may include whether each streetlight is turned off and whether there is a short circuit. The information on the deterioration state of each street light includes whether or not harmonics are affected by the leakage current of each street light, the number of LED modules in failure among the plurality of LED modules of the LED lighting device included in each street light, and the number of LED modules that are deteriorating performance. May include a number.

The predefined analysis method may include a method of analyzing information on a deterioration state of a street light. More specifically, the operation of the smart control server 100 to analyze the deterioration state information may include the following. First, the smart control server 100 may analyze a change trend of current according to power supplied to the LED lighting device of the street light when driving the street light. Subsequently, the smart control server 100 may derive the deterioration state of the streetlight by applying the analyzed change trend to a predefined determination condition. The predefined discrimination condition is that the change in current according to the power supplied to the LED lighting device of the street light when driving the street light, failure or performance degradation in any one or more of the plurality of LED modules included in the LED lighting device of the street light in the past. If it is similar to any one of the current change trends according to the power supplied to the LED lighting device of the streetlights actually generated within a predefined error range, it may be a condition for determining that there is an abnormality according to the deterioration state. Thereafter, the smart control server 100 may determine whether or not any one or more of the plurality of LED modules included in the LED lighting device of the street light has a failure or performance degradation according to the deterioration state of the street light.

The smart control server 100 may include each abnormal occurrence, each deterioration state information, and location information of each street light in the visual output. Furthermore, the smart control server 100 may evaluate the function of each streetlight based on each deterioration state information and each leakage current information, and include the evaluation result in the visual output. The smart control server 100 may provide a visual output to the web page 130 to which the responsive web is applied.

The web page 130 to which the responsive web is applied can be accessed through the user terminal 130. The user terminals 131-133 may be a desktop computer, a laptop computer, a tablet, a smart phone, or the like. For example, as shown in FIG. 2, the first user terminal 111 may be a smartphone; The second user terminal 112 may be a desktop; The third user terminal 113 may be a notebook computer. The type of user terminal may be differently employed according to embodiments. The user terminals 131-133 include arithmetic functions of a typical computer; Save/reference function; Input/output function; And it may be configured to perform all or part of the control function. The user terminals 131-133 may communicate with the server 100 by wire or wirelessly through the web page 130 to which the responsive web is applied.

When the user terminal 131-133 accesses the web page 130 to which the responsive web is applied, the monitor of the user terminal 131-133 may display a smart control screen including a visual output. The smart control screen may provide monitoring results for the state of each street light. In addition, the smart control screen may include a smart control UI for inputting control for each street light.

Specifically, the smart control UI may include each power control command UI corresponding to each street light. The user of the user terminal 131-133 may apply an input for operating a power control command UI corresponding to the corresponding streetlight in order to control power as necessary when an abnormal situation of a specific streetlight occurs. When a user's input is detected in any one of each of the power control command UIs, power control for a street light corresponding to the power control command UI in which the input is sensed may be performed. The control command is from the user terminal (131-133) to the web page 130 to which the responsive web is applied, from the web page 130 to which the responsive web is applied to the smart control server 100, and from the smart control server 100 to LoRa. The gateway 120 is a LoRa Client installed on a street light corresponding to the power control command UI detected by the LoRa Gateway 120, and may be transmitted from the LoRa Client to the street light.

3 is an exemplary diagram of a configuration of an apparatus according to an embodiment.

The LoRa Client 1110 may include a power block, a sensing block, a processing unit (CPU block), and a LoRa communication unit (LoRA block).

The sensing unit may include an ammeter and a voltmeter. The ammeter and voltmeter may measure in real time a voltage and a current according to power supplied to the street light 1100 from the street light distribution panel 20 or another street light electrically connected to the street light distribution panel 20. The ammeter and voltmeter may measure voltage and current according to the power supplied to the LED lighting device 1120 of the street light 1100 in real time. The ammeter can collect leakage current information measured through the current ZCT.

The sensing unit may include a GPS module. The GPS module may measure location information of the street light 1100.

The LoRa communication unit may include a LoRa antenna 1111. The LoRa Client 1110 may wirelessly transmit streetlight information to the LoRa Gateway 120 through the LoRa antenna 1111 through the LoRa(1) method, which is an IoT communication method.

LoRa Client (1110) is an IP67 product and can be completely dustproof/waterproof. LoRa Client (1110) can be installed 1:1 replacement with an existing circuit breaker. The LoRa Client 1110 can be composed of 2 boards in a case. The LoRa antenna 1111 of the LoRa Client 1110 and the GPS module may be connected to the body by a cable and installed at the top of the street light (3m). The LoRa Client 1110 may have a Windows configuration (using a BP switch) to enable a street light control field test.

The LoRa Gateway 120 may include a power block, a sensing block, a processing unit (CPU block), and a LoRa communication unit (LoRA block).

The LoRa communication unit may include a LoRa antenna. The LoRa Gateway 120 may wirelessly acquire street light information of each street light collected by LoRa Clients installed on each street light including the LoRa Client 1110 through a LoRa antenna in a LoRa (1) method. The LoRa communication unit may be configured so that the LoRa Gateway 120 can communicate with the smart control server 100 through wired or wireless communication methods such as Ethernet, TVWS, LTE, and 3GPP.

The LoRa Gateway 120 sensing unit may include an analog sensor and a digital sensor. The analog sensor and digital sensor may collect environmental information on which a plurality of streetlights electrically connected to the streetlight distribution panel 20 such as wind direction, wind speed, fine dust, temperature, and humidity are placed.

LoRa Gateway (120) can be installed in a street light distribution panel or by using a waterproof case. The LoRa Gateway 120 may include various I/O configurations for building an IoT system. The LoRa Gateway 120 is connected to RJ-45 Ethernet, and IP-based sensors can be connected. The LoRa Gateway 120 may have an Analog 2 port as an analog sensor input. The LoRa Gateway 120 may have various sensor inputs supporting RS-485.

The smart control server 100 may include a GIS server, a DB server, a web server, an application server, and the like. The smart control server 100 may include a visualization module capable of providing a visual output.

The smart control server 100 may store each street light information obtained from the LoRa Client 1110. The smart control server 100 may analyze whether or not an abnormality occurs and deterioration state information of each street light based on each operation state information and each leakage current information, based on a predefined analysis method.

Whether an abnormality occurs in each streetlight may include whether each streetlight is turned off and whether there is a short circuit. The information on the deterioration state of each street light includes whether or not harmonics are affected by the leakage current of each street light, the number of LED modules in failure among the plurality of LED modules of the LED lighting device included in each street light, and the number of LED modules that are deteriorating performance. May include a number.

The predefined analysis method may include a method of analyzing information on a deterioration state of a street light. More specifically, the operation of the smart control server 100 to analyze the deterioration state information may include the following. First, the smart control server 100 may analyze a change trend of current according to power supplied to the LED lighting device of the street light when driving the street light. Subsequently, the smart control server 100 may derive the deterioration state of the streetlight by applying the analyzed change trend to a predefined determination condition. The predefined discrimination condition is that the change in current according to the power supplied to the LED lighting device of the street light when driving the street light, failure or performance degradation in any one or more of the plurality of LED modules included in the LED lighting device of the street light in the past. If it is similar to any one of the current change trends according to the power supplied to the LED lighting device of the streetlights actually generated within a predefined error range, it may be a condition for determining that there is an abnormality according to the deterioration state. Thereafter, the smart control server 100 may determine whether or not any one or more of the plurality of LED modules included in the LED lighting device of the street light has a failure or performance degradation according to the deterioration state of the street light.

The smart control server 100 may include information on whether an abnormality occurs in each streetlight, information on a deterioration state, and information on a location in the visual output. Furthermore, the smart control server 100 may evaluate the function of each streetlight based on each deterioration state information and each leakage current information, and include the evaluation result in the visual output. The smart control server 100 may provide a visual output to the web page 130 to which the responsive web is applied.

When the user terminal 131-133 accesses the web page 130 to which the responsive web is applied, the monitor of the user terminal 131-133 may display a smart control screen including a visual output. The smart control screen may provide monitoring results for the state of each street light. In addition, the smart control screen may include a smart control UI for inputting control for each street light.

Specifically, the smart control UI may include each power control command UI corresponding to each street light. The user of the user terminal 131-133 may apply an input for operating a power control command UI corresponding to the corresponding streetlight in order to control power as necessary when an abnormal situation of a specific streetlight occurs. When a user's input is detected in any one of each of the power control command UIs, power control for a street light corresponding to the power control command UI in which the input is sensed may be performed. The control command is from the user terminal (131-133) to the web page 130 to which the responsive web is applied, from the web page 130 to which the responsive web is applied to the smart control server 100, and from the smart control server 100 to LoRa. The gateway 120 is a LoRa Client installed on a street light corresponding to the power control command UI detected by the LoRa Gateway 120, and may be transmitted from the LoRa Client to the street light.

The system according to an embodiment includes the LoRa Client 1110 as described above; LoRa Gateway 120; It may include a smart control server 100. The system according to an embodiment detects and analyzes current, voltage, and leakage current of incoming and outgoing relays centered on a relay, and based on this, accurately determines the state of a streetlight and notifies in real time when an abnormal situation occurs.

Specifically, it is possible to check whether or not the power drawn from the street light distribution board is abnormal by measuring the relay input voltage and current. By measuring the relay output voltage and current, you can check if there is any abnormality in streetlight LEDs. By measuring the leakage current, it is possible to diagnose the possibility of an abnormality in the SMPS and the street light itself. Monitoring results can be displayed on the smart control screen in real time. When a failure situation occurs, it may be notified through the web page 130 to which the responsive web is applied.

The LoRa Client 1110 of the system according to an embodiment may measure the current at the relay output terminal to diagnose the abnormality of the LED module constituting the street light in detail, monitor it, and utilize it for maintenance.

The smart control server 100 may visualize the monitoring result in real time. The visualized result may be transmitted to the user terminal or may be output through an output means connected to the server. The server may perform notification through a web page or application when a failure situation occurs.

4 is a flowchart illustrating an operation of determining the number of failures of an LED module according to an embodiment.

First, the smart control server 100 may classify a first street light corresponding to a pre-defined condition for determining the deterioration state information (410).

The smart control server 100 may analyze a change trend of current according to power supplied to the LED lighting device of the street light when driving the street light. Subsequently, the smart control server 100 may derive the deterioration state of the streetlight by applying the analyzed change trend to a predefined determination condition. The predefined discrimination condition is that the change in current according to the power supplied to the LED lighting device of the street light when driving the street light, failure or performance degradation in any one or more of the plurality of LED modules included in the LED lighting device of the street light in the past. If it is similar to any one of the current change trends according to the power supplied to the LED lighting device of the streetlights actually generated within a predefined error range, it may be a condition for determining that there is an abnormality according to the deterioration state. The smart control server 100 may define streetlights corresponding to a predefined determination condition as first streetlights.

Next, the smart control server 100 may obtain the street light rated current of the first street light (420).

The rated current means the current consumed by the first street light during normal operation. The smart control server 100 may have a database of standard information of streetlights in advance. The smart control server 100 may obtain the rated current of the first street light from the database.

Subsequently, the smart control server 100 may obtain a current supplied to the LED lighting device of the first street light from street light information of the first street light (430).

The street light information of the first street light includes information on the operation state of the first street light, information on leakage current, and location information. The operation state information includes a voltage and current according to power supplied to the first street light from a street light distribution panel or another street light electrically connected to the street light distribution panel, and a voltage and current according to power supplied to the LED lighting device of the first street light. The smart control server 100 may refer to the operation state information from the street light information of the first street light, and refer to the current supplied to the LED lighting device of the first street light from the operation state information.

In the following order, the smart control server 100 may acquire current consumption of one LED module of the LED lighting device included in the first street light (440).

The consumption current refers to the current consumed by one LED module of the LED lighting device included in the first street light during normal operation. The smart control server 100 may have a database of standard information of streetlights in advance. The smart control server 100 may acquire current consumption of one LED module of the LED lighting device included in the first street light from the database.

Thereafter, the smart control server 100 divides the difference between the rated current of the first street light and the current supplied to the LED lighting device of the first street light by the current consumption of one LED module as the number of LED modules that are the failure of the first street light. Can be determined (450).

For example, a street light of “100W 4LED module” can be assumed. The streetlight rated current may be 50mA. The current consumption of the LED module may be 12.5mA.

If the current supplied to the LED lighting device of the first street light is 50mA, the smart control server 100 may determine that the entire module is in normal operation. If the current supplied to the LED lighting device of the first street light is 37.5mA, the smart control server 100 may determine that one module is broken. If the current supplied to the LED lighting device of the first streetlight is 25mA, the smart control server 100 may determine that two modules are faulty. If the current supplied to the LED lighting device of the first street light is 12.5mA, the smart control server 100 may determine that three modules are faulty. If the current supplied to the LED lighting device of the first street light is 0A, the smart control server 100 may determine that four modules are faulty.

The smart control server 100 may include a monitoring result in real time in a visual output. The smart control server 100 may provide a visual output to the web page 130 to which the responsive web is applied. The user terminals 131-133 may access the web page 130 to which the responsive web is applied, and check the monitoring result of the state of each street light on the smart control screen. Specifically, users of the user terminals 131 to 133 can check the number of LED modules in a state of failure of each street light. Meanwhile, the smart control server 100 may perform notification through the web page 130 to which the responsive web is applied when a failure situation occurs.

Alternatively, a street light of "200W 6LED module" can be assumed. The street light rated current may be 90mA. The current consumption per module may be 15mA.

When the current supplied to the LED lighting device of the first street light is 90mA, the smart control server 100 may determine that the entire module is in normal operation. If the current supplied to the LED lighting device of the first street light is 75mA, the smart control server 100 may determine that one module is broken. If the current supplied to the LED lighting device of the first street light is 60mA, the smart control server 100 may determine that two modules are faulty. If the current supplied to the LED lighting device of the first street light is 45mA, the smart control server 100 may determine that three modules are faulty. If the current supplied to the LED lighting device of the first street light is 30mA, the smart control server 100 may determine that four modules are faulty. If the current supplied to the LED lighting device of the first streetlight is 15mA, the smart control server 100 may determine that 5 modules are defective. If the current supplied to the LED lighting device of the first street light is 0A, the smart control server 100 may determine that 6 modules are broken.

Through the above, the smart control server 100 analyzes the current measured by each LoRa Client installed on each street light and provides a visual output, so that it is possible to visually diagnose the presence or absence of an LED module constituting each street light. have. Users can monitor each street light based on the visual output and use it for maintenance or control the street light determined to be faulty.

5 is a flowchart illustrating an operation of determining the number of LED module failures and the number of deteriorated LED modules according to an embodiment.

First, the smart control server 100 may acquire the number of a plurality of LED modules of the LED lighting device included in the first street light (510).

The smart control server 100 may have a database of standard information of streetlights in advance. The smart control server 100 may obtain the number of LED modules included in the LED lighting device included in the first street light from the database.

Next, the smart control server 100 divides the difference between the rated current of the first street light and the current supplied to the LED lighting device of the first street light by the current consumption of one LED module to the LED of the LED lighting device of the first street light. It can be defined as the number of module failure candidates (520).

The smart control server 100 divides the difference between the rated current of the first street light and the current supplied to the LED lighting device of the first street light by the current consumption of one LED module, and the operation described with reference to FIG. 4 may be the same. have. The smart control server 100 does not determine the value obtained through the above calculation as the number of LED modules that are the failure of the first street light in order to distinguish between the failed LED module and the LED module that is not malfunctioning but causes performance degradation. It can be defined as the number of LED module failure candidates. Based on the number of LED module failure candidates of the first street light, the smart control server 100 can determine the number of LED modules that are the failure of the first street light and the number of LED modules that are the performance degradation of the first street light through the following detailed operations. have.

To this end, the smart control server 100 calculates the predicted noise of the current supplied to the LED lighting device of the first street light based on the ratio of the number of LED module failure candidates of the LED lighting device of the first street light and the number of LED modules. Can do it (530).

When a part of the LED module fails in the LED lighting device of the first street light, a disconnection or a high resistance region outside the circuit design of the original LED lighting device occurs. Such disconnection or high resistance causes impedance disturbance of the detailed area of the original LED lighting device, and accordingly, noise of the current supplied to the LED lighting device of the first street light is generated. The more LED modules that have failed in the LED lighting device, the more impedance disturbance regions that generate current noise. In short, as the number of LED module failure candidates of the first street light increases from the number of LED modules of the first street light, not only the size of the current supplied to the LED lighting device decreases, but also the noise of the current supplied to the LED lighting device increases. Is done.

The smart control server 100 may determine what percentage the number of LED module failure candidates occupies with respect to the number of LED modules of the LED lighting device of the first street light. Based on this ratio, the smart control server 100 may calculate the expected noise of the current supplied to the LED lighting device of the first street light. The expected noise can be calculated by referring to the current noise data according to the number of defective LED modules compared to the number of LED modules for each LED lighting device previously databased.

In the following order, the smart control server 100 determines the number of possible failures when the error between the measured noise and the predicted noise of the current supplied to the LED lighting device of the first street light is within a predefined error range. It can be determined by the number of LED modules (540).

Specifically, the smart control server 100 may obtain measurement noise of the current supplied to the LED lighting device of the first street light through street light information of the first street light. The smart control server 100 may calculate whether the measurement noise is within a predefined error range. The predefined error range may be differently employed according to embodiments. When the error between the measurement noise and the expected noise is within a predefined error range, the smart control server 100 is similar to the current noise according to the number of faulty LED modules compared to the number of LED modules for each LED lighting device previously databased. , The number of LED modules that are the failure of the first street light can be determined as it is as the number of LED module failure candidates of the LED lighting device of the first street light.

On the other hand, the smart control server 100 is a value obtained by dividing the error by a predefined unit error when the error between the measured noise and the expected noise of the current supplied to the LED lighting device of the first street light exceeds a predefined error range. A value obtained by subtracting an integer rounded from the number of failure candidates may be determined as the number of LED modules that are the failure of the first street light (550).

In the case of including an LED module that has not yet failed, but shows a performance degradation in the LED lighting device, the LED module shows a malfunction rather than a non-operation, and consumes current and voltage irregularly or differently from the original design of the LED lighting device. Therefore, when the LED lighting device includes an LED module showing a deterioration in performance, impedance disturbance occurs more severely than when the LED lighting device includes a faulty LED module. Therefore, if the measurement noise of the current supplied to the LED lighting device of the first street light exceeds a predefined error range than the expected noise, it is reasonable to estimate the LED module performance degradation rather than the LED module failure.

On the other hand, when the LED module causes performance degradation, unlike the case of a failure, the LED module does not correspond to the case of a disconnection, and thus a predetermined current flows through the LED module. Therefore, if the current supplied to the LED lighting device of the first street light when n LED modules fail and the current supplied to the LED lighting device of the first street light when the LED module shows m performance degradation are the same, at least m> The relationship of n is established.

When the error between the measured noise and the predicted noise of the current supplied to the LED lighting device of the first street light exceeds a predefined error range, the smart control server 100 rounds the error by dividing the error by a predefined unit error. You can get an integer. The predefined unit error may be the noise of the current supplied to the LED lighting device when one LED module fails compared to the total number of LED modules.

The smart control server 100 may determine the number of LED modules that are the failure of the first street light by subtracting the integer number from the number of candidate failures.

In addition, the smart control server 100 may determine twice as much as the number of LED modules, which is the deterioration of the performance of the first street light (560).

For example, a street light of “100W 4LED module” can be assumed. The streetlight rated current may be 50mA. The current consumption of the LED module may be 12.5mA.

If the current supplied to the LED lighting device of the first street light is 50mA, the smart control server 100 may determine that the entire module is in normal operation.

If the current supplied to the LED lighting device of the first street lamp is 37.5mA, the smart control server 100 may define one fault candidate module as one. The smart control server 100 may calculate the predicted noise of the current supplied to the LED lighting device of the first street light based on the ratio of the number of LED module failure candidates (1 piece) and the number of LED modules (4 pieces).

The smart control server 100 may calculate whether an error between the measured noise and the expected noise exceeds a predefined error range. When the error between the measured noise and the predicted noise is out of a predefined error range, the smart control server 100 may obtain an integer obtained by rounding a value obtained by dividing the error by a predefined unit error. The integer value may be 1, for example. The predefined unit error may be the noise of the current supplied to the LED lighting device when one LED module fails in the LED lighting device composed of a total of 4 LED modules.

When the error between the measured noise and the predicted noise is within a predefined error range, the smart control server 100 may determine the number of LED modules that are the failure of the first street light as one.

When the error between the measured noise and the predicted noise is out of a predefined error range, the smart control server 100 sets “0”, which is a value minus the number of failure candidates, by subtracting the integer as much as the above integer from the number of possible failures. It can be determined by the number of faulty LED modules.

In addition, the smart control server 100 may determine "2", which is twice as much as the integer obtained above, as the number of LED modules, which is the decrease in performance of the first street light.

Through the above, the smart control server 100 can distinguish and determine whether the LED module failure or performance degradation of the LED lighting device supplied with a current less than the rated current. Through this, the smart control server 100 may provide different visual outputs for the case where the LED modules of the LED lighting device of each street light are defective and the performance is degraded. Through this, users of the user terminals 131-133 who are provided with the smart control screen through the web page 130 to which the responsive web is applied may be provided with more accurate monitoring of each street light. Through this, a more suitable control command or management can be performed for each street light.

The embodiments described above may be implemented as a hardware component, a software component, and/or a combination of a hardware component and a software component. For example, the devices, methods, and components described in the embodiments include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate (FPGA). array), programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions, such as one or more general purpose computers or special purpose computers. The processing device may execute an operating system (OS) and one or more software applications executed on the operating system. In addition, the processing device may access, store, manipulate, process, and generate data in response to the execution of software. For the convenience of understanding, although it is sometimes described that one processing device is used, one of ordinary skill in the art, the processing device is a plurality of processing elements and/or a plurality of types of processing elements. It can be seen that it may include. For example, the processing device may include a plurality of processors or one processor and one controller. In addition, other processing configurations are possible, such as a parallel processor.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -A hardware device specially configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of the program instructions include not only machine language codes such as those produced by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the operation of the embodiment, and vice versa.

The software may include a computer program, code, instructions, or a combination of one or more of these, configuring the processing unit to behave as desired or processed independently or collectively. You can command the device. Software and/or data may be interpreted by a processing device or to provide instructions or data to a processing device, of any type of machine, component, physical device, virtual equipment, computer storage medium or device. , Or may be permanently or temporarily embodyed in a transmitted signal wave. The software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored on one or more computer-readable recording media.

As described above, although the embodiments have been described by the limited drawings, a person of ordinary skill in the art can apply various technical modifications and variations based on this. For example, the described techniques are performed in a different order from the described method, and/or components such as a system, structure, device, circuit, etc. described are combined or combined in a form different from the described method, or other components Alternatively, even if substituted or substituted by an equivalent, an appropriate result can be achieved.

Therefore, other implementations, other embodiments and claims and equivalents fall within the scope of the following claims.

Claims (5)

It is installed on a street light having an LED lighting device including a plurality of LED modules, and voltage and current according to the power supplied to the street light from a street light distribution board or another street light electrically connected to the street light distribution board to check the presence or absence of power abnormalities And operation state information collected in real time by voltage and current according to the power supplied to the LED lighting device of the street light, leakage current information measured through the current ZCT of the street light to measure the influence on harmonics, and the location of the street light. LoRa Client for transmitting streetlight information including information to a LoRa Gateway wirelessly using LoRa;
It is installed in the street light distribution board, and each street light information transmitted wirelessly through LoRa from each LoRa Client installed on each street light connected to the street light distribution board is obtained, and each street light information is smart LoRa Gateway transmitting to the control server; And
It stores the information on each street light transmitted from the LoRa Gateway, and based on the operation state information and leakage current information of each street light, based on a predefined analysis method, whether an abnormality occurs and a deterioration state of each street light is determined. A smart control server that analyzes and provides a visual output including information on the occurrence of the abnormality and the deterioration status on a web page to which a responsive web is applied
In the street light smart control system comprising a,
Each of the above LoRa Clients,
Collecting in real time voltage and current according to the power supplied to each street light from the street light distribution board or other street light electrically connected to the street light distribution board and according to the power supplied to the LED lighting device of each street light Each street light information including each operation state information, each leakage current information measured through the current ZCT of each street light, and each location information of each street light is transmitted to the LoRa through wireless transmission using LoRa. To the gateway,
The LoRa Gateway,
Acquires each street light information wirelessly transmitted from each of the LoRa Clients and transmits it to a smart control server,
The smart control server,
Stores each street light information obtained from the LoRa Gateway, and based on the predefined analysis method, based on the respective operation state information and the respective leakage current information, whether or not each street light is abnormal and deteriorated Analyzes state information, includes each abnormality occurrence, each deterioration state information, and location information of each street light in the visual output, and provides the visual output to a web page to which the responsive web is applied and,
The web page to which the responsive web is applied can be accessed by a user terminal, and when the user terminal accesses the web page to which the responsive web is applied, the monitor of the user terminal displays a smart control screen including the visual output, The smart control screen includes a smart control UI, the smart control UI includes each power control command UI corresponding to each street light, and a user's input is detected in any one of the respective power control command UIs. When the input is sensed, power control for the street light corresponding to the power control command UI is performed,
The operation of analyzing the deterioration state information by the smart control server includes analyzing the change trend of the current according to the power supplied to the LED lighting device of the street light when driving the street light, and applying the analyzed change trend to a predefined determination condition. Deriving a deterioration state of the street light, and determining whether any one or more of the plurality of LED modules included in the LED lighting device of the street light is defective or deteriorated according to the deterioration state of the street light,
The smart control server evaluates the function of each street light based on the respective deterioration state information and the respective leakage current information, and includes the evaluation in the visual output,
The smart control server,
Classify the first street light corresponding to the predetermined determination condition, the deterioration state information,
Obtaining the street light rated current of the first street light,
Obtaining a current supplied to the LED lighting device of the first street light from the street light information of the first street light,
Acquiring current consumption of one LED module of the LED lighting device included in the first street light,
Dividing the difference between the rated current of the first street light and the current supplied to the LED lighting device of the first street light by the current consumed by one of the LED modules to determine the number of LED modules that are faults of the first street light,
Streetlight smart control system.
The method of claim 1,
Whether or not an abnormality occurs in each of the streetlights includes whether the respective streetlights are off and whether there is a short circuit
Streetlight smart control system.
The method of claim 1,
The information on the deterioration state of each street light includes whether there is a harmonic effect according to the leakage current of each street light, the number of LED modules in a faulty state among a plurality of LED modules of the LED lighting device included in each street light, and performance degradation. Including the number of LED modules
Streetlight smart control system.


delete The method of claim 1,
The smart control server
Acquiring the number of a plurality of LED modules of the LED lighting device included in the first street light,
A value obtained by dividing the difference between the rated current of the first street light and the current supplied to the LED lighting device of the first street light by the current consumption of one LED module is defined as the number of LED module failure candidates of the first street light,
Based on the ratio of the number of failure candidates and the number of LED modules, calculate the expected noise of the current supplied to the LED lighting device of the first street light,
When the error between the measurement noise of the current supplied to the LED lighting device of the first street light and the expected noise is within a predefined error range,
The number of candidate failures is determined by the number of LED modules that are failures of the first street light,
If the error exceeds the predefined error range,
A value obtained by subtracting an integer value obtained by dividing the error by a predetermined unit error from the number of failure candidates is determined as the number of LED modules that are the failure of the first street light,
To determine twice the integer as the number of LED modules, which is the degradation of the first street light
Streetlight smart control system.

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