KR100549815B1 - Impedance terminator by street lamp control inning - Google Patents

Abstract

The present invention has a built-in impedance terminator in the high-pressure ballast of the street lamp that is provided with a plurality of column monitoring flashers installed in one distribution box to receive the status information and control signals together with the power supply so that the attenuation of the status information and control signals does not occur. An impedance terminator of a streetlight control circuit for efficiently managing a plurality of streetlights in a distribution box of a.

In the present invention described above, since 1 to 50 street lamps are connected to a branch circuit coupled in parallel through a power line to a power distribution box, a control signal transmitted simultaneously with power to a power line is a PLC slave built in a high voltage ballast of each street light. After passing through the impedance terminator and ballast circuit, it is supplied to the next street light.

The PLC slave in the high voltage ballast recognizes a control signal transmitted simultaneously with the power through the power line to turn on or off the lamp of the street lamp.

The impedance terminator in the high voltage ballast prevents a control signal from moving to the ballast circuit, prevents attenuation of the signal, and transmits the signal to the high voltage ballast of the next street light. To help.

In the ballast circuit in the high voltage ballast, the lamp is turned on or off while being controlled by a PLC slave receiving the control signal while receiving a separate power supply.

Impedance, Terminator, Distribution Box, Column Monitoring Flasher, High Voltage Stabilizer, PLC Slave

Description

Impedance terminator by street lamp control inning

1 is a block diagram showing the overall configuration of a street lamp control circuit according to the present invention.

Figure 2 is a schematic diagram showing a state in which each street lamp is installed in the street lamp control circuit according to the present invention.

Figure 3 is a schematic diagram showing the internal configuration of the high pressure ballast of the streetlight control circuit according to the present invention.

Explanation of symbols on the main parts of the drawings

3: distribution box 4: branch circuit

5: street light 10: power line

11: high pressure ballast 12: PLC slave

13 impedance terminator 14 ballast circuit

The present invention relates to an impedance terminator of a street light control circuit, and in particular, the impedance information is controlled by embedding an impedance terminator in a high-pressure ballast such as a horizontal which is installed in a single distribution box and receives state information and control signals together with power. The present invention relates to an impedance terminator of a street light control circuit for efficiently managing a plurality of street lights in one distribution box by preventing attenuation of a signal.

In general, dozens or hundreds of street lamps around the road are installed to control the power supply in one place, and it is necessary to periodically check each street lamp for abnormalities.

However, according to the conventional general method for checking the street lamps, the work had to be inspected for failures after arriving at each pole, so there was a disadvantage in that a lot of inspection time was required.

In addition, to check the abnormality of the street lamp and repair it, a large number of lamps and stabilizers were loaded on the maintenance vehicle, and each street lamp was visited, resulting in a traffic jam caused by the maintenance vehicle.

Patent Application No. 20-2000-0036172 dated December 22, 2000 (detector for failure information of a lamp circuit using a power line) has been proposed to detect and display a failure state of a conventional lamp circuit.

This is the lighting circuit

A terminal device for detecting fault information of the lamp circuit;

It includes a central unit that receives and collects fault information and delivers it to a remotely located host.

The central unit receives the predetermined control signal from the host and processes it.

Although the status information and control signals are transmitted between the central device and the host through a power line for supplying power to the failure information detecting device of the lamp, at the time when there is no light load on the lamp circuit power line, that is, when the lamp does not light up, Since a power line to which an AC voltage is not applied is used as a communication line to transmit and receive information between the host and the central device, there is a problem in that it cannot be recognized at all at night.

And it sends status information and control signal to power applied to each street light through power line at the same time, and it is supplied to the first high voltage ballast for supplying power to the first street lamp and went through internal slave controller and ballast circuit. After that, it is supplied to the second high voltage ballast to supply power to the next lamp for street lamps, and it passes through the PLC slave and ballast circuit inside, so the status information and control signal transmitted through the power line are signaled from the capacitor of the ballast circuit in the high voltage ballast. The attenuation phenomenon occurs a lot, so the distance for communication becomes very short. Of course, when a plurality of street lights are installed in one distribution box, the control signal is not transmitted to the rear street lamp or the status information is distributed. Can't be passed to the controller There are problems such as being unable to control.

Accordingly, the present invention has been made to solve the problems described above, by embedding an impedance terminator in the high-pressure ballast of the street lamp that is installed in a plurality of distribution boxes and receives the status information and control signals with a power source It is an object of the present invention to provide an impedance terminator of a street light control circuit for efficiently managing a plurality of street lights in one distribution box by preventing attenuation of state information and control signals.

Impedance terminator of the street lamp control circuit according to the present invention for achieving the above object is 1 to 50 street lights are connected to the branch circuit coupled in parallel through the power line in one distribution box, so that the power line is simultaneously delivered to the power line The control signal is supplied to the next street light after passing through PLC slave, impedance terminator and ballast circuit built in the high voltage ballast of each street light.

The PLC slave in the high voltage ballast recognizes a control signal transmitted simultaneously with the power through the power line to turn on or off the lamp of the street lamp.

The impedance terminator in the high voltage ballast prevents a control signal from moving to the ballast circuit, prevents attenuation of the signal, and transmits the signal to the high voltage ballast of the next street light. To help.

The ballast circuit in the high-pressure ballast is characterized in that it is configured to turn on or off the lamp while being supplied with a separate power control signal under the control of the PLC slave receiving the control signal.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

1 schematically shows the overall configuration of a streetlight control circuit according to the present invention,

The street lamp distribution box 3 that is controlled and controlled while connected to the central control system 1 through the wired / wireless communication network 2 is configured to manage a plurality of street lamps 5 with a PLC master embedded therein.

1 to 20 branch circuits 4 are coupled to each of the distribution boxes 3 in parallel via a power line 10, and one branch circuit 4 includes a PLC slave built-in or externally, respectively. ) 1 to 50 are connected so that 80 to 100 street lights 5 are managed by one distribution box 3.

In addition, one or two lamps 6 may be installed in the one street lamp 5 to determine the state and abnormality of each street lamp 5 in one distribution box 3 by request of a management program. The function of transmitting the status of each street light, detecting and blocking short circuits, and performing overall control, branch control, and individual control functions for each street light.

Figure 2 schematically shows a state in which each street lamp is installed in the street lamp control circuit according to the present invention,

The central control system 1 manages a plurality of street lamps 5 in a branch circuit 4 receiving control signals through a PLC master embedded in the street lamp distribution box 3 and simultaneously displays status information of each street lamp 5. To be delivered to,

In the branch circuit 4 coupled to the one distribution box 3 in parallel via the power line 10, since 1 to 50 street lamps 5 are connected, a control signal transmitted simultaneously with the power to the power line is each street light. After passing through the PLC slave 12, the impedance terminator 13, and the ballast circuit 14 built in the high voltage ballast 11 of (5) to be supplied to the next second street light (5a).

The PLC slave 12 in the high voltage stabilizer 11 recognizes a control signal transmitted simultaneously with the power through the power line 10 to turn on or turn off the lamp 6 of the street light 5.

The impedance terminator 13 in the high voltage ballast 11 is connected in parallel to the ballast circuit 14 input of the PLC slave 12 so that the control signal is moved to the next ballast circuit 14. It is possible to stably control the plurality of street lights 5 by preventing the signal from being attenuated while being transmitted to the high pressure ballast 11a of the next street lamp 5a.

The ballast circuit 14 in the high pressure ballast 11 turns on or turns off the lamp 6 while being supplied with a separate power control signal while being controlled by the PLC slave 12 receiving the control signal.

Figure 3 schematically shows the internal configuration of the high pressure ballast of the streetlight control circuit according to the present invention,

The power supply including the control signal from the above-described branch circuit 4 is supplied through the power line 10 and the control signal is the smoothing circuit of the inductance L1, L2, L3, L4 and the capacitor C1. 21 is supplied to the high pressure ballast 11 of the street light (5).

The PLC slave 12 of the high voltage stabilizer 11 recognizes a control signal transmitted simultaneously with the power through the power line 10 to perform a control to turn on or turn off the lamp 6 of the street lamp 5.

The impedance terminator 13 composed of the capacitor C2 in the high voltage stabilizer 11 prevents the control signal from moving to the next ballast circuit 14 while preventing the attenuation of the signal and at the same time the smoothing circuit described above. By passing the inductance (L1) (L2) (L3) (L4) and the condenser (C1) of (21) to the high pressure ballast (11a) of the next street light (5a) to control a plurality of street lights (5) stably. To help.

As described above, since the impedance terminator of the street lamp control circuit of the present invention is connected to one branch box in parallel through a power line, 1 to 50 street lamps are connected to each other. The signal is supplied to the next streetlight after passing through the PLC slave, impedance terminator and ballast circuit built in the high voltage ballast of each streetlight.

The PLC slave in the high voltage ballast recognizes a control signal transmitted simultaneously with the power through the power line to turn on or off the lamp of the street lamp.

In the impedance terminator in the high voltage ballast, it is possible to stably control a plurality of street lights by preventing the control signal from moving to the ballast circuit while preventing the attenuation of the signal and transmitting the signal to the high voltage ballast of the next street light.

Claims (2)

The control signal transmitted simultaneously with the power to the power line in the state in which 1 to 50 street lights 5 are connected to the branch circuit 4 coupled in parallel through the power line 10 to one distribution box 3 is connected to each street light ( In the impedance terminator of the street light control circuit for supplying to the next street light (5a) after passing through the PLC slave 12 and the ballast circuit (14) built in the high voltage ballast (11) of 5), The impedance terminator 13 in the high voltage stabilizer 11 is connected in parallel to the input of the ballast circuit 14 of the PLC slave 12 in the high voltage stabilizer 11 to block impedance mismatch and signal attenuation inside the ballast. Impedance terminator of the streetlight control circuit, characterized in that. The method of claim 1, An impedance terminator of a street lamp control circuit in which the impedance terminator (13) is formed of a capacitor.

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