KR100897607B1 - Lamp lookout and control system in both directions and its method - Google Patents

Abstract

The present invention relates to a two-way lamp monitoring and control system and a method for monitoring and controlling the same. It is a system that monitors fault condition, overcurrent monitoring of ballasts and lamps, and leakage, short circuit / short circuit using safety voltage. The present invention includes a gateway unit and a controller, and the communication between the gateway unit and the controller uses a domain broadcast message method based on a power line. The main function of the present invention is not only to search for the earth leakage detection section (line and lamp) by using the switching of the commercial power supply and safety voltage, but also is configured to cut off the vehicle by embedding the earth leakage blocking function in the lamp control unit. In addition, it is possible to control the flashing lights, monitor overcurrent and leakage, detect faults due to various errors, and notify them. And when the state value on the power line is changed, it can transmit data by event driven method, and it is a bi-directional automatic monitoring and control system that can prevent the human accident due to electric shock by detecting the short circuit and blocking function.

Bidirectional, Gateway, Earth Leakage, Multi Voltage

Description

Lamp lookout and control system in both directions and its method}

The present invention uses the 220V voltage and 30V multi-voltage to monitor the leakage and overcurrent state of the line and lamp including the voltage state of the distribution box, as well as the point / light control, pattern and group control of individual and whole lines and lamps, A bidirectional lamp monitoring and control system capable of schedule control and a method for monitoring and controlling the same.

Existing street light control system was installed and operated by controlling the time off automatically by equipped with timer function by sunrise time. This means that the street light within a certain group needs to be turned off. There was a difficulty.

Recently, methods using wired power line communication, local area network (LAN), and wireless CDMA have been attempted to operate as a system that can control not only the overall control but also individual street lights.

Street light control system using power line communication does not need to establish a separate communication line, and there is an advantage to reduce the communication cost in the street light control system, but the power of frostbite from the outdoor distribution box to the control center where the control system is located There is an inconvenience that the cable must be installed.

Street light control system using the LAN method has the disadvantage that the communication cable must be installed separately from the power line, there is an inconvenience of high installation cost, management operation cost, maintenance cost.

Like the power line communication, the street light control system using CDMA does not need to install a separate communication cable and also has the advantage of not having to install a power cable to the control system. However, the CDMA communication method is inconvenient to pay for the packet use.

In addition, there is a continuous demand for electric shock persons due to the occurrence of short circuits in street lamps and security of roads, and various methods for monitoring and controlling the status values inside the street lamp system by controlling different specifications such as street lamps and security with the same controller. Is required.

The present invention solves the inconvenience of installation and maintenance by using a bidirectional gateway to convert heterogeneous protocols to solve the problems of the prior art as described above bidirectional lamp monitoring and control system and its monitoring and The purpose is to provide a control method.

In order to solve the problems of the prior art as described above, a built-in circuit breaker and a lamp control unit have a built-in circuit breaker so that a separate circuit breaker is not used to monitor and control a lamp efficiently. An object of the present invention is to provide a system and a method for monitoring and controlling the same.

In order to achieve the above object, in the bidirectional lamp monitoring and control system of the present invention and the monitoring and control method thereof, one or more lamps and lines can be easily transmitted by converting heterogeneous protocols through a gateway to enable bidirectional data transmission. Monitor and control.

In the present invention is connected to the Internet network includes a gateway for converting the protocol of the signal transmitted and received in the control system and the signal transmitted and received by the control unit, and is connected to the gateway and the power line, the short circuit of the lamp and the line It is preferred to include a control unit for monitoring over current and faults.

In the present invention, the control unit is connected to the gate way and includes a line monitoring unit for monitoring the short circuit and overcurrent of the line, and controls the entire line and automatically cuts the line in the event of a short circuit, one end is connected to the line monitoring unit Independently connected to the gate portion, the other end is connected to the lamp unit to monitor the short circuit and overcurrent of the lamp unit to automatically cut off the lamp unit when a short circuit, and includes a lamp control unit for controlling one or more lamp unit individually or totally It is preferable.

In the present invention, it is preferable to further include a state control unit for setting the ID of the line monitoring unit and the lamp control unit and control by subdividing one or more lamps.

In the present invention, it is preferable that the state controller controls the extinction control and the change of the reference setting value for each line and for each lamp using the ID.

In the present invention, the state control unit preferably represents the state values of the line monitoring unit and the lamp control unit.

In the present invention, the lamp preferably includes a street lamp and a security lamp.

The present invention includes a line control method for measuring a short circuit and an overcurrent according to a change in current value of a line when a power supply crosses 30V and 220V, and detects a failure of a relay, a ballast, and a lamp by using a current consumption value of the lamp, and then surrounds the lamp. It is desirable to include a lamp control method for monitoring current and leakage current.

According to the present invention, it is possible to configure a gateway for converting heterogeneous protocols to be compatible with LAN / XML / SOAP and CDMA, so that bi-directional data transmission is possible. When changing the transmission medium, a separate system needs to be constructed. There is no effect of improving user convenience and cost.

In addition, it operates the system with multi-voltage of 220V and 30V, and monitors the aging of power line, leakage of line section and leakage current of lamp in real time, and prevents human accidents due to electric shock due to built-in shut-off function. It works.

In addition, there is an effect that can monitor and control the lamp and the line in the field as well as remotely using a separate state control unit.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings. In adding reference numerals to components of the following drawings, it is determined that the same components have the same reference numerals as much as possible even if displayed on different drawings, and it is determined that they may unnecessarily obscure the subject matter of the present invention. Detailed descriptions of well-known functions and configurations will be omitted.

1 is a block diagram of a bidirectional lamp monitoring and control system according to an embodiment of the present invention.

Referring to FIG. 1, the control system 100, a repeater 110, an internet network 120, a gateway 130, a controller 140, and a lamp unit 150 are included.

The control system 100 monitors the lamp unit 150 by accessing the Internet network 120 or by connecting the line monitoring unit 142 and the lamp control unit 144 using a CDMA method through the repeater 110. And control.

The control system 100 transmits a voltage control command (220V / 30V) to the gateway unit on an individual line or the entire line, and the gateway sets a domain ID and a line ID to be controlled to transmit a 220V / 30V control command to monitor the line. After receiving the voltage control command, the unit controls the individual or the entire line by controlling the MC (Magnetic Contact) of the corresponding voltage if the line ID of the received control command is correct.

The gateway 130 is connected to the control system 100 to convert heterogeneous protocols.

The control unit 140 is connected to the gate way and is connected to the line monitoring unit and the line monitoring unit and the line monitoring unit for monitoring the short circuit and overcurrent of the line, and control the entire line and automatically cuts the line when the short circuit It is independently connected to the way part, and consists of a lamp control unit 144 that individually or globally controls one or more lamps.

Detailed description of the control system 100, the repeater 110, the Internet network 120, the gateway unit 130, the control unit 140 and the lamp unit 150 is shown in Figures 2, 3 and 4 below. See.

2 is a diagram illustrating a connection between a gate part and a line monitoring unit according to an exemplary embodiment.

Referring to FIG. 2, the gateway 200 includes a gateway 210 for converting heterogeneous protocols, a serial communication unit 220 for RS232 serial communication, a CDMA modem 230 for CDMA wireless communication, and a wireless relay. It consists of an antenna 240.

The gate wave 200 is composed of the serial communication unit 220 connecting between the gateway 210 and the CDMA modem to enable communication with the control system and to monitor and control the occurrence of events. Rather, it sends a heart beat signal at regular intervals to check for failure.

The gateway 200 converts the power line communication protocol transmitted and received in the control system and the CDMA protocol transmitted and received by the controller. The power line communication protocol transmitted / received by the control system and the XML / SOAP protocol of LAN method transmitted / received by the controller are converted to each other and connected to the control system via an internet network or a repeater.

In addition, the gateway 210 of the gateway unit 200 uses a domain broadcast message method based on the line monitoring unit and the LonTalk power line communication protocol, and is composed of a network variable which is an input / output variable.

The network variable consists of 1 byte of line ID, 2 bytes of CT setting reference value, ZCT setting reference value, and message transmission time of 1 byte each, and can monitor and control individual line, whole line, and corresponding line by using line ID of line monitoring unit. Can be.

Meanwhile, the line monitoring unit 300 includes a power supply unit 310, a coupling unit 320, a power line communication unit 330, a central processing unit 340, a power detection unit 350, a digital output unit 360, and a voltage detection unit. The unit 370, the display unit 380, and the sensor unit 390 are included.

The power line communication unit 330 communicates with a power line, the coupling unit 320 connects the communication signal on the power line with the power line communication unit 330, and the power supply unit 300 is a central processing unit and the power line communication unit 330 To the power supply.

The central processing unit 340 has a plurality of analog input and digital output ports to control the operation according to the communication state, the power detector 350 detects the ON / OFF state of the power on the line.

The digital output unit 360 drives the MC by switching voltages of 220V and 30V from the central processing unit 340, and the voltage detector 350 measures the voltage driven from the MC.

The sensor unit 390 converts an analog value from ZCT and CT into a voltage to be amplified and input to the central processing unit, and the display unit 380 shows the current state information as an LED.

The distribution box in which the line monitoring unit 300 is located includes an earth leakage breaker 301, a voltage converter 302 converting 220V and 30V voltages, a 220V driving MC 303a, a 30V driving MC 303b, and A CT 305, which is a current transformer for detecting current values at both ends of a single-phase cable, and a ZCT 304, which is an image current transformer for detecting leakage current values.

Referring to FIG. 2, in order to operate the multi power supply using the line monitoring unit 300, a method using 220V voltage mainly responsible for the point / light control and the leakage current section detection and the leakage of the street light can be cut off when a short circuit occurs. There is a method using a 30V voltage, and in order to solve the safety problem of the power supply, it is configured to output only a single voltage by switching two voltages.

In addition, when the power is tripped through the earth leakage breaker, the data detected by the power detection unit 350 is recognized by the central processing unit 340 and transmits a power cutoff message to the gateway, and transmits to the control system through the gateway. .

The line overcurrent monitoring, which is another function of the line monitoring unit 300, measures an electric current value of a line through CT and transmits an overcurrent message to the gateway when the current exceeds a predetermined reference value. The line monitoring unit ( By operating the warning light of the LED 300) can provide the convenience of the diagnosis and maintenance of the fault condition.

The leakage current monitoring and control criteria of the line monitoring unit 300 are within 30 mA of the rated sensitivity current of the Electrical Equipment Technical Standards (Article 245 (4)), and within 0.03 seconds of operating time. It is set to more than 15mA to less than 25mA, when the leakage current reference value is more than 25mA transmits a "leakage warning" message to the gateway unit and cuts the power of the line monitoring unit 300.

In addition, by separately setting the leakage current value of 15mA and 25mA, the operator not only helps to determine the state value of the line, but also enables preliminary measures according to the state value, and the power of the line monitoring unit 300 at 25mA. By blocking the circuit breaker before the circuit breaker is tripped, the line monitoring unit 300 can be remotely restarted after completion of maintenance of the circuit section.

By using 30V voltage, it is possible to monitor and control the state of the line by checking the current and leakage current values of the line even when the lamps such as street lamps and security lamps are not turned on.

In addition, the status data can be transmitted only when the amount of change in the data becomes larger than the interval setting value in the message information transmission in the line state, so that the current amount and the leakage current amount, which are analog values, can be prevented from being transmitted by the event-driven method. have.

This configuration is configured to prevent operator's confusion by ignoring the small amount of change or insignificant change value, and also saves the fee due to infinite packet transmission during CDMA transmission from the gateway to the control system.

The line power supply control method according to the present invention applies a 30V voltage after 220V OFF to prevent a circuit failure due to the instantaneous voltage fluctuation of the circuit during the control of 30V and 220V power supply, and on the contrary, applies a 220V voltage after 30V OFF, The line overcurrent monitoring method sends a line overcurrent generation message by shutting down the power of the line when the line current measurement value exceeds the line overcurrent reference value.

The line leakage detection method is to transmit an earth leakage warning / warning message when the line leakage current measurement value exceeds the earth leakage warning / warning reference value, to transmit a status value in case of a short circuit warning, and to block the MC of the line monitoring unit. Is to measure the current value of the line and transmit the state value when the current value of previous line, previous line leakage current value and overcurrent generation value is larger than the change value of certain standard of previous line.

3 is a diagram illustrating a connection between a gate part and a lamp controller according to an exemplary embodiment.

Referring to FIG. 3, the gate part 200 uses power line communication with the lamp control part 400, and the lamp control part 400 includes a ZCT 410, a power supply part 420, a coupling part 430, The power line communication unit 440, the central processing unit 450, the relays 460a and 460b, the signal protection unit 480, the sensor unit 490, and the CTs 470a and 470b are included.

The ZCT 410 detects a leakage current amount, the power line communication unit 440 communicates with a power line, and the coupling unit 430 connects the power line communication unit 440 with a communication signal on a power line.

The power supply unit 420 is composed of a relay 460a capable of receiving 0V or 30V input power and a relay 460b capable of receiving 30V input power via the relay 460a, and a 30V power circuit connected to the relay 460b. Is connected.

In the connection configuration of the relay 460a, the 30V line is connected to the NC (Normal Close) contact, the 220V line is connected to the NO (Normal Open) contact, and the relay 460a is connected to the 30V and 220V lines in common. Becomes

At this time, when 220V is input to the input line, the relay 460a may be driven, and 220V may be momentarily driven to the relay 460b that may receive a 30V input. In this case, since the components of the 30V line may be shocked, the internal voltages of all the components must be increased to 220V. Therefore, in order to prevent this, a delay using a half-wave delay rectifying circuit between the relays 460a and 460b is prevented. By not allowing the relay 460b to drive for a period of time, you can protect components on the 30V line.

The central processing unit 450 is responsible for the operation control according to the communication state, the relays (460a, 460b) to turn on or off the voltage of 220V or 30V to supply power to the street lamp, CT (470a, 470b) ) Detects the amount of current input to the lamp unit.

The sensor unit 490 detects an overcurrent by receiving a 220V or 30V power supply, measures a leakage current, and designs a 30V sensor processing circuit and a 220V sensor processing circuit in one ZCT 410 through AC / DC. The central processing unit 450 reads and processes data.

The two sensor processing circuits are converted to a value that can be read by the central processing unit 450 regardless of the 30V voltage or 220V voltage, and the central processing unit checks whether the current power source is 220V or 30V and then 30V voltage. In this case, data output from the 30V sensor processing circuit is used.

At 220V, the leakage current is detected using the data output from the 220V sensor processing circuit, and the low pressure sensor processing circuit converts the signal input from the ZCT to the same value as when 220V is applied.

The signal protection unit 480 matches the impedance of the ballast via the relays 460a and 460b and prevents signal attenuation by matching impedance of power lines.

The lamp control unit 400 is connected to the lamp unit, a plurality of lamp control unit 400 may be connected to one gateway unit, the one lamp control unit 400 is connected to one lamp unit, one lamp The department monitors and controls street lights and security lights.

{ZCT (1) to ZCT (N)} 410 connected to the power input to the lamp control unit 400 is installed at the lower end of the lamp and becomes the input of the lamp control unit 400 of the next line. In addition, a plurality of ZCT 410 is connected to a plurality of the lamp control unit 400.

The lamp controller 400 includes a line ID of 1 byte and a column ID of 1 byte. When the line monitoring unit is not used, the lamp control unit 400 processes the line ID as 0.

In addition, the lamp control unit 400 sets an overcurrent reference value of 2 bytes for each lamp and street lamp of the lamp unit, and sets the leakage current value of the lamp unit in the same manner as the line monitoring unit with a 'leakage warning' of less than 15 mA and less than 25 mA, and an earth leakage warning of more than 25 mA. The measured and monitored data divided by 'is transmitted to the gateway part when the state changes, and at the same time, the LED warning light in the lamp controller 400 is turned on.

The lamp control unit selectively monitors and controls street lamps (1 lamp) / security lamps (2 lamps) / lamp lamps, individual and total control, constant group control, ballast / relay / light failure monitoring, and 220V / 30V voltage. It monitors over current and leakage current of lamp by using and automatically cuts off when the reference leakage value is over.

The current and leakage current monitoring method of the lamp according to the present invention turns off the lamp relay when the current consumption value exceeds the streetlight overcurrent reference value, transmits a streetlight overcurrent occurrence message, and when the security lamp exceeds the security lamp overcurrent reference value as well. Turn OFF the security lamp lamp relay and transmit the security lamp overcurrent occurrence message.

Lamp leakage detection method is to send a leakage warning / warning message when the leakage current measurement value of lamp such as street lamp and security lamp exceeds the leakage warning / warning threshold value, and to block the street lamp or security lamp and send the corresponding status message in case of a short circuit warning. , Lamp failure monitoring method is to detect the failure of relay, ballast and lamp by using current consumption value.

4 is a diagram illustrating a connection between a plurality of line monitoring units and a plurality of lamp control units according to another exemplary embodiment of the present invention. The system may be configured by three methods.

First, when the system is configured using the line monitoring unit 300, the point / light control and the state monitoring of the entire line are configured using 220V power, while the lamp unit 150 is not turned on. Also monitor the short circuit condition by line section using 30V voltage (weekly).

In addition, the state of the circuit breaker 301 is monitored to notify the gateway unit 200 of the ON / OFF state, and is displayed as an LED using the display unit 380.

Second, when configuring the system using the lamp control unit 400 can be driven by a multi-power source using a power supply of 220V and a voltage of 30V, the point / lights out control of the lamp unit 150, gap and tripod lamp, etc. 220V input must be received for group control including control, and overcurrent and leakage current value can be monitored and shut off including 220 / OFF control.

The leakage current value detection of the lamp unit 150 is divided into a 'leakage warning' and a 'leakage alarm', and when the 'leakage alarm' is notified of the state value and displayed by an LED and a relay of the lamp control unit 400 ( 460a and 460b are automatically shut off to prevent power from being supplied to the lamp unit 150.

Third, referring to FIG. 4, when the system is configured using the line monitoring unit 300 and the lamp control unit 400 at the same time, the line ID of the line monitoring unit 300 and the lamp ID of the lamp control unit 400. The individual lines and the individual lamps 150 may be arbitrarily controlled by using, and an electric leakage state of each line and each lamp may be detected, and may be blocked when a “leakage occurs”.

In addition, a plurality of line monitoring units 300 may be connected to one distribution box, and a plurality of lamp control units 400 may be connected to one line monitoring unit 300, and may be connected to one line monitoring unit 300. The reference of the lamp control unit 400 is configured so as not to exceed the capacity of 30A per one line on which one line monitoring unit 300 is placed, not the quantity of the lamp control unit 400.

In addition, the line monitoring unit 300 and the lamp control unit 400 does not necessarily need to be connected in common, and can be used independently according to the method of building the system and the necessary functions.

Common to all three operation methods, the leakage current value of the line monitoring unit 300 and the lamp control unit 400 is 15 mA or more and less than 25 mA, and is set to 25 mA or more. It is configured to be changeable by the operator's selection of the control system 100 within 30mA. The leakage tolerance is also set to ± 3mA.

When driving with 30V voltage, all functions except for dot / off are the same as for 220V, and the earth leakage detection and overcurrent detection algorithms are compatible with 220V power.

5 is a block diagram illustrating a lamp control unit and a lamp unit according to another embodiment of the present invention.

Referring to FIG. 3 of the configuration of the lamp control unit 400, the lamp unit 150 includes two ballasts 152a and 152b, a street lamp 154, and a security lamp 156.

When 220V or 30V voltage is switched to one line and applied to the power supply unit 420, the communication signal of the power line is connected to the central processing unit 450 through the coupling unit 430 and the power line communication unit 440.

The central processing unit 450 includes a sensor unit 490 that converts the analog values of the CTs 470a and 470b and the {ZCT (1)} 410 into voltages and amplifies the signals. do.

In addition, when connected to the ballasts 452a and 152b of the lamp unit 150, the signal protection unit 480 is used to perform impedance matching to prevent signal attenuation due to impedance mismatch.

The one lamp control unit 400 is connected to the lamp 150 via the ballast 152a of the lamp unit 150 or connected to the security lamp 156 via another ballast 152b, respectively, and configured for the first lamp. Not only can be used as a street lamp 154-street light 154, street lamp 154-security light 156, security light 156-security light 156 can be configured for two lights, and connected, Lamp control unit 400 is connected to the plurality of lamp unit 150 as shown in FIG.

6 is a block diagram showing the internal configuration of the state control unit and the connection of the two-way lamp monitoring and control system according to an embodiment of the present invention.

Referring to FIG. 6, the state controller 500 includes a power supply unit 510, a power line communication unit 520, a coupling unit 530, a control input key 540, a central processing unit 550, and a display unit 560. Include.

The power line communication unit 520 communicates with a power line, and is in charge of operation control according to the communication state of the central processing unit 550. The power unit 510 receives 220V input signals and controls 220V and 30V voltages to control the power line. Power is supplied to the communication unit 520 and the central processing unit 550.

The coupling unit 530 connects the communication signal on the power line with the power line communication unit 520, and the control input key 540 inputs operation control of the central processing unit 550 using a button.

The display unit 560 outputs the operation state of the central processing unit 550 or the state values of the line monitoring unit and the lamp control unit to be displayed on the LCD.

The state control unit 500 is connected to the power line to enable the ID setting of the line monitoring unit 300 and the lamp control unit 400, subdivided into 1 light / 2 light / double light, and various setting reference values to enable extinction control Change it.

In order to operate the line monitoring unit 300 and the lamp control unit 400 using the state control unit 500, the line monitoring unit 300 and the lamp control unit present in power line communication using the state controller 500. Set the ID using the switch pin of (400). The ID setting separately configures the ID of the line monitoring unit 300 and the ID of the lamp control unit 400.

The data at this time is also transmitted to the gateway 200 located on the power line, using the ID of the line monitoring unit 300 and the ID of the lamp control unit 400 and the line monitoring unit 300 and the lamp control unit 400. Independent and total control of the lamp unit 150 connected with is possible, and can be changed by checking the overcurrent and leakage current value, the reference value of the fault condition.

The state control unit 500 does not need to be directly connected to the line monitoring unit 300 and the lamp control unit 400, and when connected to the same power line, the state control unit 500 may be configured so as not to be restricted by a place. The 500 may control the plurality of line monitoring units 300 and the plurality of lamp control units 400.

The state control unit 500 is configured to install the state control unit 500 on the power line connected to the lamp control unit 400 and the line monitoring unit 300 for confirmation and maintenance at the time of system construction separately from the system always operating.

The system configured as described above inputs the line monitoring unit 300 ID and the lamp control unit 400 ID using the control input key 540, and the input ID is received by the street light controller and the line monitoring controller through the power line. Subsequently, control of a street lamp (1 lamp), a security lamp (2 lamp), a lamp, etc. using the ID of the corresponding device may be performed, and setting of a sensor reference value and an error reference value for determining a failure may be changed.

As described above, it has been described with reference to the preferred embodiment of the present invention, but those skilled in the art will be variously modified and modified within the scope of the present invention without departing from the spirit and scope of the present invention described in the claims below. It will be appreciated that it can be changed.

1 is a block diagram of a bidirectional lamp monitoring and control system according to an embodiment of the present invention.

Figure 2 is a block diagram showing the connection of the gate way and the line monitoring unit according to an embodiment of the present invention.

3 is a block diagram showing the connection of the gate portion and the lamp control unit according to an embodiment of the present invention.

4 is a block diagram showing the connection of a plurality of line monitoring unit and a plurality of lamp control unit according to another embodiment of the present invention.

5 is a block diagram showing a lamp control unit and a lamp unit according to another embodiment of the present invention.

6 is a block diagram showing the internal configuration of the state control unit and the connection of the two-way lamp monitoring and control system according to an embodiment of the present invention.

            <Description of the symbols for the main parts of the drawings>

100: control system 110: repeater

120: Internet network 130, 200: gateway part

140: control unit 142, 300: track monitoring unit

144, 400: lamp control unit 150: lamp unit

152a, 152b: ballast 154: street light

156: security light 210: gateway

220: serial communication unit 230: CDMA modem

240: wireless relay antenna 301: earth leakage breaker

302: voltage conversion unit 303a: 220V driving MC

303b: MC 304 for driving 30V, 410: ZCT

305, 470a, 470b: CT (current transformer) 310, 420, 510: power supply

320, 430, 530: coupling unit 330, 440, 520: power line communication unit

340, 450, 550: central processing unit 350: power detection unit

360: digital output unit 370: voltage detection unit

380, 560: display unit 390, 490: sensor unit

460a, 460b: relay 480: signal protection unit

500: state control unit 540: control input key

Claims (7)

delete A gateway unit connected to the Internet network to convert protocols of signals transmitted and received by the control system and protocols of signals transmitted and received by the controller; A line monitoring unit connected to the gate way unit and a power line to monitor a short circuit and an overcurrent of a line, control an entire line, and automatically cut a line when a short circuit occurs; And One end is connected to the line monitoring unit or independently of the gate way unit, the other end is connected to the lamp unit to monitor the short circuit and overcurrent of the lamp unit to automatically shut off the lamp unit when the short circuit, at least one lamp unit Bidirectional lamp monitoring and control system comprising a lamp control unit for controlling individually or as a whole. The method of claim 2, And a state control unit for setting IDs of the line monitoring unit and the lamp control unit and subdividing and controlling one or more lamps. The method of claim 3, wherein And the state control unit controls the extinguishing control and the change of the reference set value for each line and for each lamp by using an ID. The method of claim 3, wherein And the state control unit indicates the state values of the line monitoring unit and the lamp control unit. The method of claim 2, The lamp unit bidirectional lamp monitoring and control system comprising a ballast, a street lamp and a security lamp. delete

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