KR20080081390A - Apparatus and method for detecting street lamp fault - Google Patents

Abstract

An apparatus and a method for detecting a street lamp fault are provided to extend a lifetime of a street lamp by individually and sequentially turning on or off the street lamp according to the fault in a situation room. An apparatus(30) for detecting a street lamp fault includes a detection unit(33), a processor(34), an interruption unit(35), and a communication unit(36). The detection unit measures a voltage applied to commercial power for supplying power, a consumption current flowing in a street lamp ballast and a lamp(10), and a leakage current. The processor determines defaults of the lamp and the ballast by calculating active power consumed in the lamp from the voltage, the consumption current, and the leakage current measured from the detection unit and determining an overcurrent and an electric leakage. The interruption unit interrupts power supply to the ballast by receiving control order from the processor when the processor determines the fault of the lamp or the ballast. The communication unit transmits details of detection of detection unit and details of calculation, determination, and control of the processor to a situation room(40) in real time.

Description

Apparatus and method for detecting street lamp fault}

1 is a schematic block diagram of a streetlight failure detection system according to the present invention.

2 is an internal configuration diagram of a streetlight failure detection apparatus according to the present invention.

3 is a flowchart illustrating a streetlight failure detection method according to the present invention.

** Description of symbols for the main parts of the drawing **

10: lamp 20: ballast

30: streetlight failure detection device 31: power supply

32: filter 33: detector

34: processor 35: blocking

36: communication unit 37: power saving control unit

40: situation room

The present invention relates to an apparatus and method for detecting a street lamp failure, and more particularly, when an abnormality occurs in a street lamp composed of a lamp and a ballast, the power supply to the street lamp is automatically cut off, and the failure state is located in a remote room. The present invention relates to an apparatus and a method for quickly recovering by real time transmission.

Street lamps are installed along the streets for street lighting, traffic safety, or aesthetics. They are installed on highways, main roads in the city, commercial district roads, and residential district roads. can do.

Conventionally, in checking the failure of such a street light, visual or non-communication electronic devices have been used. However, in this way, when the street light does not light up or a failure occurs due to a short circuit, the exact cause of the failure is not known. Therefore, inaccurate repairs have been made based on the past experience of most workers. Until the worker arrives at the site, they have no choice but to be exposed to the risk of fire due to a short circuit.In many cases, measures are taken only after an accident has occurred. There was no problem in that human and economic losses were caused by checking the state of numerous street lights.

The present invention was devised to solve the above problems of the prior art, by accurately diagnosing each relay element and dangerous elements detected in the street lamp and transmitting them to the situation room by remote communication in real time, thereby reducing the risks arising from the failure of the street lamp and a short circuit accident. An object of the present invention is to provide an apparatus and method for detecting streetlight failures that can be quickly coped with.

Street lamp failure detection apparatus according to the present invention for achieving the above object, the street light is connected in series with the lamp and the lamp to transmit the status information of the street lamp composed of a ballast for driving the lamp in real time to the remote control room in real time A failure detection apparatus, comprising: a detection unit for measuring a voltage applied to a commercial power supply for supplying power, a current consumption flowing in a street lamp ballast and a lamp, and a leakage current leaking to the outside; A processor configured to calculate an active power consumed by the lamp from the voltage, the current consumption, and the leakage current measured by the detection unit, and determine whether the lamp and the ballast are broken by determining an overcurrent and a short circuit; A blocking unit which cuts off the power supply to the ballast by receiving a control command from the processor when the processor determines that the lamp or ballast has failed; And a communication unit for transmitting the detection details of the detection unit and the calculation, determination, and control details of the processor to the situation room in real time. Characterized in that comprises a.

Here, the processor is to determine that the lamp failure when the active power does not occur, and if the overcurrent and undercurrent lasts for a predetermined time, the ballast is determined to be a failure, the data communication between the processor and the situation room is RS485 And Polling method.

In addition, when the surge signal input from the commercial power source is cut off, a filter for supplying power to the power supply unit and the ballast of the apparatus for detecting a street lamp failure, and when the effective power calculated by the processor is determined to be stable for a predetermined time, a control command from the processor. It is desirable to further include a power saving control unit for receiving the power saving function.

Hereinafter, the configuration and operation of a streetlight failure detection apparatus according to the present invention will be described with reference to the accompanying drawings.

1 is a schematic block diagram of a streetlight failure detection system according to the present invention.

As shown in FIG. 1, the streetlight failure detection system according to the present invention includes a lamp 10, a ballast 20 connected to the lamp 10 in series to drive the lamp 10, and the ballast 20. Is connected to the street light failure detection device 30 to detect a failure of the street light, a commercial power supply to supply power to the street light failure detection device 30, and the street light failure detection device 30 through a communication network It consists of a situation room 40 to observe the state of.

The communication network transmits various data generated from the street light failure detection device 30, and the situation room 40 may analyze various measurement elements of the received street light and a failure determination result to analyze a dangerous situation before an accident. As a result, you can take prompt action. Preferably, a separate computer system may be constructed in the situation room 40 so that the data may be displayed on a computer monitor, the data may be stored in a database, and the situation room 40 may control a failure detection apparatus through a communication network. .

1 shows that one streetlight failure detection device 30 is connected to the situation room 40, but in practice, several streetlight failure detection devices 30 may be connected to the situation room 40 at one point. In this case, a unique identification number is assigned to each street light, and when the streetlight failure detection device 30 transmits data to the situation room 40, the streetlights controlled by the situation room 40 are transmitted by transmitting the identification number of the corresponding street light together. Make sure you know the status accurately and conveniently.

In this way, since each of the street lamps in the situation room 40 can be individually and sequentially turned on according to their failure, surges generated when all the street lamps are turned on at the same time can be minimized. Extending and preventing malfunction of the electronic controller installed near the lamp. In addition, it is possible to quickly determine the location of the broken street lamp in the situation room by the unique identification number of the street lamp and quickly take necessary measures such as replacing the lamp. In addition, when the action according to the failure is completed, the situation room 40 to restart the streetlight through the communication network.

2 is an internal configuration diagram of a streetlight failure detection apparatus according to the present invention.

As shown in FIG. 2, the streetlight failure detection device 30 according to the present invention includes a power supply unit 31 for supplying power required for driving the streetlight failure detection device from a commercial power supply, and a surge signal input from the commercial power supply. The filter 32, the detector 33 for measuring all relay elements of the street lamp, the processor 34 for determining whether the street lamp is abnormal based on the results measured by the detector, and the power supply to the ballast when the abnormality of the street lamp is determined. Cut-off unit 35 to cut off the supply, communication unit 36 for real-time transmission of the measurement details and determination details of the processor to the situation room, power saving control unit 37 to enter the streetlight power saving mode when no abnormality is found in the streetlight It is configured as.

The filter 32 supplies power to which the surge signal is blocked to the power supply unit 31, and also supplies power to the lamp and the ballast through the power saving control unit 37.

The detector 33 reads a voltage applied to a commercial power source and a current flowing in a street lamp ballast and a lamp and transmits it to the processor 34. It also reads the image current leaked from the street light and obtains the resistive leakage current (Igr current) from it.

In the method for obtaining the resistive leakage current (Igr current) from the image current, first, the product of the instantaneous value v of the voltage and the instantaneous value Io of the image current is accumulated and averaged by the integration number n, as shown in Equation 1, and the Igr component. After obtaining the active power value of Igr (W), and as shown in equation (2) by dividing this value by the effective value of the voltage to obtain the resistive leakage current Igr (mA).

A current sensor for measuring the consumption current flowing through the ballast and the lamp and a current sensor for detecting the leakage current are installed at the portion indicated by circles in FIG. 2, and the current consumption and the leakage current are measured and transmitted to the detection unit.

The processor 34 determines the state of the street lamp from the relay elements received from the detector 33. For example, the active power consumed by the lamp is calculated based on the detected voltage and the current consumption, and the overcurrent and the leakage current are determined from the detected leakage current. In general, when the lamp is broken, only the ballast is supplied with power, so only pure current is supplied and no active power is generated. Therefore, if only current is supplied and active power does not flow, it is determined as a lamp failure, and if overcurrent and undercurrent last for a certain time, it is regarded as ballast failure.

The blocking unit 35 receives a control command from the processor 34 when the processor 34 determines that the measured elements have exceeded a predetermined limit, a failure occurs, or an overcurrent or an electric leakage occurs. Shut off the power supply to the furnace. Therefore, the power to the street lamp is automatically cut off before the danger of the street lamp failure, such as a fire due to a short circuit or an overload, can minimize the risk of an accident. In addition, when the ballast fails, power is not applied to the lamp, so that the life of the lamp is not shortened due to the failure of the ballast. After the power supply is cut off, a proper maintenance for the street lamp may be made to remotely restart the command room 40.

The communication unit 36 transmits the data measured by the detection unit 33 and the determination and control details of the processor 34 to the situation room 40 through a communication network in real time. In the present invention, the communication between the streetlight failure detection device 30 and the situation room 40 uses RS485, Polling method. The situation room 40 continuously checks the state in which the plurality of connected streetlight failure detection devices 30 are in a state, and continues communication by checking whether they are connected and whether data transmission is desired.

When it is determined that the effective power calculated by the processor 34 has been stabilized for a predetermined time, the power saving controller 37 receives a control command from the processor 34 to enable the street lamp to operate in a power saving state.

Next, the fault detection method in the present invention will be described step by step.

3 is a flowchart illustrating a streetlight failure detection method according to the present invention.

First, initialize the system and initialize the control output.

Next, the voltage applied to the commercial power supply, the current consumption of the street lamp stabilizer and lamp, image current, resistive leakage current (Igr current), and active power are measured.

Next, the controller checks the abnormality of the ballast from the measured data, and cuts off the control output if it is not normal.

Next, the controller checks whether the lamp is abnormal from the measured data, and cuts off the control output if it is not normal.

Next, if it is determined that the effective power is stable for a predetermined time, the power saving operation is executed, and if it is determined otherwise, the power is entered again to check whether there is an abnormality of the ballast. It is suitable that the fixed time is 1 minute.

On the other hand, the overcurrent and the current leakage state is determined from the measured data to cut off the control output during the current or the current leakage.

Meanwhile, the measured data is converted into digital signals by A / D conversion.

Next, the voltage, current consumption, image current, resistive leakage current (Igr current), and active power measurement elements converted into the digital signal are accumulated for a predetermined period. In this case, it is appropriate to set the constant cycle to 6 cycles.

Next, when the accumulation of data for the predetermined period is completed, the average of the accumulated data is calculated and converted into measurement data.

Next, the blocking information and the converted data are transmitted in real time to the situation room at a remote location by remote communication.

Street lamp failure detection apparatus and method according to the present invention as described above can be turned on or off individually and sequentially according to the failure of each street lamp in the situation room, it is possible to extend the life of the street lamp lamp, The location of the broken streetlight can be easily determined in the situation room by the identification number, and when the measures for the failure are completed, the streetlight can be conveniently restarted in the situation room.

In addition, by transmitting the measurement elements of the street lamp to the situation room in real time, it is possible to quickly grasp the dangerous situation in the situation room and take action to prevent the spread of accidents and failures, and to know the details of the specific failures so that corrective actions are possible. Do.

In addition, when the risk is detected by the power supply cut-off function provided in the streetlight failure detection device itself, power is not supplied to the streetlight, thereby preventing the risk of a fire accident due to short-circuit before the action of the judgment of the situation room.

Claims (8)

A streetlight failure detection device for transmitting in real time the status information of a street lamp composed of a lamp and a ballast connected to the lamp in series to drive the lamp to a situation room at a remote location, A detector for measuring a voltage applied to a commercial power supply for supplying power, a current consumption flowing in the street lamp ballast and a lamp, and a leakage current leaking to the outside; A processor configured to calculate an active power consumed by the lamp from the voltage, the current consumption, and the leakage current measured by the detection unit, and determine whether the lamp and the ballast are broken by determining an overcurrent and a short circuit; A blocking unit which cuts off the power supply to the ballast by receiving a control command from the processor when the processor determines that the lamp or ballast has failed; And A communication unit for transmitting the detection details of the detection unit and the calculation, determination, and control details of the processor to the situation room in real time; Characterized in that comprises a, streetlight failure detection device. The apparatus of claim 1, wherein the leakage current measured by the detector is an image current leaking outside and a resistive leakage current (Igr current). The apparatus of claim 1, wherein the processor determines that the lamp has failed when no active power is generated, and that the ballast determines that the ballast has failed when the overcurrent and undercurrent continue for a predetermined time. The apparatus of claim 1, wherein data communication between the processor and the situation room is performed by RS485 and polling methods. The apparatus of claim 1, further comprising a filter for blocking a surge signal input from the commercial power supply to supply power to the power supply unit and the ballast of the apparatus for detecting a streetlight failure. . The apparatus of claim 1, further comprising a power saving control unit configured to receive a control command from the processor to operate a power saving function when it is determined that the effective power calculated by the processor is stable for a predetermined time. Street light failure detection device, characterized in that. A streetlight failure detection method using a streetlight failure detection device that transmits in real time the status information of a streetlight, comprising a lamp and a ballast connected to the lamp in series, to a situation room at a remote location. Initializing the system and the control output (s1); Measuring a voltage applied to a commercial power source, a current consumption of a street lamp ballast and a lamp, an image current, a resistive leakage current (Igr current), and an active power (s2); Checking whether there is an abnormality between the ballast and the lamp using the measured data, and blocking the control output if it is not normal (s3); If it is determined that the active power is stable for a predetermined time, the power saving operation is executed; Judging an overcurrent and an electric leakage state based on the measured data independently of the steps s3 to s4, and blocking the control output when an overcurrent or an electric leakage is performed (s5); Data accumulated after converting the measured data into a digital signal independently of the steps s3 to s5 and accumulating voltage, current consumption, image current, resistive leakage current (Igr current), and active power measurement elements for a predetermined period. Obtaining the average of the transformed data into measurement data (s6); (S7) transmitting, in real time, the state information of the street lamp generated in the steps s2 to s6 to a situation room at a remote location; Street light failure detection method comprising a. The method of claim 2 or 7, wherein the resistive leakage current (Igr current) is obtained by accumulating the product of the instantaneous value of the voltage and the instantaneous value of the image current by a predetermined integration number, and dividing it by the effective value of the voltage. Streetlight failure detection device or method.

Images