KR200310502Y1 - Light bulb short circuit of street lamp and course current sensing instrument - Google Patents

Abstract

The present invention detects damage or inability to light a bulb, or detects a condition in which an overcurrent flows, and cuts off the power supply to the ballast and informs the outside to prevent shortening of the ballast. It relates to a detection device.

The factors that destabilize the lifespan of a street lamp bulb in the related art may cause contact failure due to socket detachment due to vibration, contact failure of the output line, loosening or detachment of the terminal, and insulation failure. These elements operate the ignition device unnecessarily, and continue the high voltage oscillation of 1500V or more even when there is no discharge accumulation and heat generation as well as the discharge lamp, thereby acting as a surge element in the semiconductor element of the lighting circuit of the ballast itself. There was a problem of breaking the ballast significantly shortening the life of the ballast.

Therefore, the present invention rectifies and drops the voltage at the power supply unit that is supplied with AC 220V power through the line to supply the operating power.

When power is normally supplied through the power supply unit, the power display unit notifies to the outside,

A current detecting converter is installed on the power line to detect the voltage value according to the current difference between the two lines while the power is supplied.

The overcurrent detection driver, which receives the operating power and receives the voltage value corresponding to the current difference from the current detection converter, turns on the thyristor while turning on the thyristor when the voltage value is greater than the reference voltage to generate the overcurrent. At the same time to drive the relay to turn off the relay contacts to cut off the power supply,

In the short-circuit detection driver that receives the operating power and receives the voltage value according to the current difference from the current detection converter, when the voltage value is smaller than the reference voltage, the thyristor is delayed by the PUT and the time constant element after a predetermined time delay. By turning on the LED for short-circuit display while turning on, the lamp short circuit is notified to the outside, and the relay is driven to cut off the supply of power while turning off the relay contact to prevent shortening of the ballast life.

Description

Light bulb short circuit of street lamp and course current sensing instrument

The present invention relates to a short-circuit bulb and an overcurrent detection device of the street lamp, in particular to detect the damage or inability to light bulbs or to detect the state of the inflow of the current to cut off the power supply to the ballast and to inform the outside of the ballast The present invention relates to a light bulb short circuit and an overcurrent detection device of a street lamp to prevent shortening of life.

It is a pure consumable that has a certain lifespan as a discharge lamp. It is repeatedly turned on when it reaches the end of its life.

In addition, the factors that destabilize the life of the bulb may cause contact failure due to vibration socket detachment, contact failure of the output line, loosening or detachment of terminals, and insulation failure. By operating the device unnecessarily, it continues to accumulate fatigue in the driving part and the resulting heat generation as well as to continue the high-voltage oscillation of 1500V or more even when there is no discharge light. There was a problem of significantly shortening the life.

Accordingly, Utility Model Registration No. 20-2002-0011438 dated April 16, 2002 (a failure detection and display device for street lamps) was proposed.

It includes a primary voltage monitor connected to both ends of the primary circuit breaker to monitor whether power is supplied from the main power source,

A secondary voltage monitor connected to both ends of the earth leakage breaker to monitor whether power is supplied to a rear end of the earth leakage breaker;

A secondary current monitoring unit coupled to one end of the secondary line to monitor whether or not the lamp is turned off by monitoring whether or not current flows through the rear end of the earth leakage circuit breaker;

A power supply unit for supplying power for controlling and operating the monitoring device;

A central processing unit for controlling overall functions of the monitoring device;

It consists of display units that indicate whether the bulb is broken under the control of the central processing unit. When the lamp is turned on at night, the voltage applied to the lamp circuit and the amount of current flowing in the lamp for the lamp are measured to determine whether the lamp is disconnected or not. After checking the circuit leakage and remembering it, the facility manager can easily check the broken street lamp by displaying the fault status of the broken street lamp and the number of the street lamp in text and color on the display attached to Jeonju. In addition, the cause of the fault can be quickly identified and repaired immediately.

However, the fault detection and display device of the conventional street lamp as described above can only know whether the bulb of the street lamp is short-circuited but has a problem that cannot be coped with in the inflow of overcurrent.

Therefore, the present invention was devised to solve the problems as described above, to detect the damage or inability to light bulb of the bulb or to detect the state in which the overcurrent flows to cut off the power supplied to the ballast and at the same time to inform the outside It is an object of the present invention to provide a device for short-circuit and overcurrent detection of a street lamp to prevent shortening of the ballast.

Light bulb short circuit and overcurrent detection device of the street lamp according to the present invention for achieving the above object is to rectify and supply voltage to the operating power supply in the power supply unit is supplied with AC 220V power through the line,

When power is normally supplied through the power supply unit, the power display unit notifies to the outside,

A current detecting converter is installed on the power line to detect the voltage value according to the current difference between the two lines while the power is supplied.

The overcurrent detection driver, which receives the operating power and receives the voltage value corresponding to the current difference from the current detection converter, turns on the thyristor while turning on the thyristor when the voltage value is greater than the reference voltage to generate the overcurrent. At the same time to drive the relay to turn off the relay contacts to cut off the power supply,

In the short-circuit detection driver that receives the operating power and receives the voltage value according to the current difference from the current detection converter, when the voltage value is smaller than the reference voltage, the thyristor is delayed by the PUT and the time constant element after a predetermined time delay. It is configured to prevent the shortening of the ballast by turning on the LED for short-circuit display and informing the outside of the bulb by turning on the power supply, and turning off the relay contact to turn off the relay contact.

1 is a circuit diagram showing a configuration according to an embodiment of the present invention,

2 is a circuit diagram showing a configuration according to another embodiment of the present invention,

Explanation of symbols on the main parts of the drawings

1, 2: Line 3: Power supply

4: power display unit 5: current detection converter

6: overcurrent detection drive unit 7: relay

8: Short circuit detection drive unit

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

1 is a configuration diagram according to an embodiment of the present invention,

In the power supply unit 3, which receives AC 220V power through the lines 1 and 2, through the capacitor C1 and the resistor R1, the rectifier is rectified by the bridge diodes BD1, BD2, and BD4. While the constant voltage diodes (ZD1) (ZD2) via the transistor (TR1) to the operating power supply voltage drop is supplied,

While the power is supplied through the power supply unit 3, the power supply display unit 4 turns on the power supply display light emitting diode LED1,

The current difference between the two lines is supplied to the bridge diodes BD5 and BD6 while power is supplied by installing a current transformer ZCT of the current detection converter 5 on the load side, which is a light bulb for the street lamps of the lines 1 and 2. BD7) (BD8) to detect the voltage value,

In the overcurrent detection driver 6 which receives a voltage value corresponding to the current difference from the current transformer ZCT of the current detection converter 5 while receiving the operation power, the current detection converter 5 passes through a resistor R13 in the comparator ( The trigger voltage is applied to the gate of the thyristor SCR2 when the voltage value input to the non-inverting input terminal (+) of IC2 is greater than the reference voltage input to the inverting input terminal (-) through the split resistors R17 and R18. By turning on the overcurrent display light emitting diode (LED3) to inform the outside of the occurrence of overcurrent, and driving the relay (7) to turn off the relay contact (7a) to cut off the power supply.

In the short-circuit detection driver 8 which receives a voltage value corresponding to the current difference from the current transformer ZCT of the current detection converter 5 while receiving the operation power, the current detection converter 5 passes through a resistor R13 in a comparator ( PUT (PUT) and resistor R7 (R8) when the voltage value input to the inverting input terminal (-) of IC1 is smaller than the reference voltage input to the non-inverting input terminal (+) through the split resistors R17 and R18. ) And a time constant element of the capacitors C4 and C5. After a predetermined time delay, a short-circuit light-emitting diode LED2 is turned on while applying a trigger voltage to the gate of the thyristor SCR1 to turn off the short circuit of the bulb. At the same time, the relay 7 is driven to turn off the relay contact 7a and the supply of power is interrupted.

The light bulb short circuit and overcurrent detection device of the street lamp according to the present invention configured as described above has a bridge diode in the power supply unit 3 receiving AC 220V power through the lines 1 and 2 through the capacitor C1 and the resistor R1. The operating power is rectified by the BD1, the BD2, the BD3, and the BD4 and supplied with a voltage drop while passing through the constant voltage diodes ZD1, ZD2, and the transistor TR1.

While power is supplied through the power supply unit 3, the power supply display unit 4 turns on the power supply display LED 1.

The current difference between the two lines is supplied to the bridge diodes BD5 and BD6 while power is supplied by installing a current transformer ZCT of the current detection converter 5 on the load side, which is a light bulb for the street lamps of the lines 1 and 2. It detects as a voltage value through BD7) (BD8).

In the overcurrent detection driver 6 which receives a voltage value corresponding to the current difference from the current transformer ZCT of the current detection converter 5 while receiving the operation power, the current detection converter 5 passes through a resistor R13 in the comparator ( The trigger voltage is applied to the gate of the thyristor SCR2 when the voltage value input to the non-inverting input terminal (+) of IC2 is greater than the reference voltage input to the inverting input terminal (-) through the split resistors R17 and R18. By turning on the overcurrent display LED3 to notify the outside of the occurrence of overcurrent, and driving the relay 7 to cut off the supply of power while turning off the relay contact 7a.

On the other hand, in the short-circuit detection driver 8 which receives a voltage value corresponding to the current difference from the current transformer ZCT of the current detection converter 5 while receiving the operation power, the current detection converter 5 passes through the resistor R13. PUT (PUT) and resistor R7 when the voltage value input to the inverting input terminal (-) of the comparator IC1 is smaller than the reference voltage input to the non-inverting input terminal (+) through the split resistors R17 and R18. After delaying a certain time by the time constant elements of the R8 and the capacitors C4 and C5, the short-circuit light-emitting diode LED2 is turned on while applying a trigger voltage to the gate of the thyristor SCR1 to turn on the light bulb. The short circuit is notified to the outside, and the relay 7 is driven to turn off the relay contact 7a to cut off the supply of power.

When the short circuit of the overcurrent bulb is eliminated by the overcurrent detection driver 6 and the short circuit detection driver 8, the comparator IC2 IC1 recognizes a state in which the short circuit is eliminated. The driving of 7) is stopped so that power can be normally supplied through the relay contact 7a.

2 shows a configuration according to another embodiment of the present invention, and the same configuration as the above embodiment uses the same reference numeral.

In the power supply unit 3, which receives AC 220V power through the lines 1 and 2, through the capacitor C1 and the resistor R1, the rectifier is rectified by the bridge diodes BD1, BD2, and BD4. An operating power source having a voltage drop is supplied through the transistor TR1 via the constant voltage diodes ZD1 and ZD2.

While power is being supplied through the power supply unit 3, the power display unit 4 turns on the power supply display LED 1 and simultaneously applies trigger power to the trigger 10 to turn on the triac 10a. While supplying power to the load normally.

The current difference between the two lines is supplied to the bridge diodes BD5 and BD6 while power is supplied by installing a current transformer ZCT of the current detection converter 5 on the load side, which is a light bulb for the street lamps of the lines 1 and 2. It detects as a voltage value through BD7) (BD8).

In the overcurrent detection driver 6 which receives a voltage value corresponding to the current difference from the current transformer ZCT of the current detection converter 5 while receiving the operation power, the current detection converter 5 passes through a resistor R13 in the comparator ( The trigger voltage is applied to the gate of the thyristor SCR2 when the voltage value input to the non-inverting input terminal (+) of IC2 is greater than the reference voltage input to the inverting input terminal (-) through the split resistors R17 and R18. And turn on the overcurrent display LED3 to notify the outside of the occurrence of overcurrent, and to prevent the power supply from being supplied to the power display unit 4 so that the trigger power is not applied to the trigger 10. 10a) is off to prevent power supply to the load.

In the short-circuit detection driver 8 which receives a voltage value corresponding to the current difference from the current transformer ZCT of the current detection converter 5 while receiving the operation power, the current transformer ZCT passes through a resistor R13 in the comparator IC1. PUT (PUT) and resistors R7 (R8) and RUT when the detected value input to the inverting input terminal (-) of the input signal is smaller than the reference voltage input to the non-inverting input terminal (+) through the split resistors R17 After delaying a certain time by the time constant element of the capacitors C4 and C5, a short voltage is turned on by applying a trigger voltage to the gate of the thyristor SCR1 to turn on the LED for short-circuit display. At the same time, the power is not supplied to the power display unit 4 so that the trigger power is not applied to the trigger 10 so that the triac 10a is turned off so that power is not supplied to the load.

As described above, the bulb short circuit and overcurrent detection device of the present invention street lamp detects damage or inability to light the bulb, or detects a state in which an overcurrent flows, so that the power supply to the ballast is cut off and notified to the outside. There is an effect such that it can prevent the life cycle of the ballast.

Claims (2)

In the power supply unit 3 that receives AC 220V power through the lines 1 and 2 through the capacitor C1 and the resistor R1, the bridge diodes BD1, BD2, BD3, BD4 and the constant voltage diode To supply the operating voltages through the (ZD1) (ZD2) and the transistor (TR1), While the power is supplied through the power supply unit 3, the power supply display unit 4 turns on the power supply display light emitting diode LED1, The current difference between the two lines is supplied to the bridge diodes BD5 and BD6 while power is supplied by installing a current transformer ZCT of the current detection converter 5 on the load side, which is a light bulb for the street lamps of the lines 1 and 2. BD7) (BD8) to detect the voltage value, In the overcurrent detection driver 6 which receives the operating power and receives the voltage value according to the current difference from the current transformer ZCT of the current detection converter 5, the comparator IC2 passes through the resistor R13 in the current transformer ZCT. The trigger voltage is applied to the gate of the thyristor SCR2 when the detected value input to the non-inverting input terminal (+) of the signal is greater than the reference voltage input to the inverting input terminal (-) through the division resistors R17 and R18. While the light emitting diode (LED3) for the overcurrent display is turned on to inform the outside of the occurrence of the overcurrent, the relay (7) is driven to turn off the relay contact (7a), In the short-circuit detection driver 8 which receives a voltage value corresponding to the current difference from the current transformer ZCT of the current detection converter 5 while receiving the operation power, the current transformer ZCT passes through a resistor R13 in the comparator IC1. PUT (PUT) and resistors R7 (R8) and RUT when the detected value inputted to the inverting input terminal (-) is smaller than the reference voltage input to the non-inverting input terminal (+) through the division resistors R17 and R18. After delaying a certain time by the time constant element of the capacitors C4 and C5, a short voltage is turned on by applying a trigger voltage to the gate of the thyristor SCR1 to turn on the LED for short-circuit display. And short-circuit and overcurrent detection device for a street lamp, characterized in that configured to turn off the relay contact (7a) by driving the relay (7) at the same time. The method of claim 1, While power is being supplied through the power supply unit 3, the power display unit 4 turns on the power supply display LED 1 and simultaneously applies trigger power to the trigger 10 to turn on the triac 10a. While supplying power to the load normally. In the overcurrent detection driver 6 which receives the operating power and receives the voltage value according to the current difference from the current transformer ZCT of the current detection converter 5, the comparator IC2 passes through the resistor R13 in the current transformer ZCT. The trigger voltage is applied to the gate of the thyristor SCR2 when the detected value input to the non-inverting input terminal (+) of the signal is greater than the reference voltage input to the inverting input terminal (-) through the division resistors R17 and R18. While the over-current display LED 3 is turned on, the occurrence of the overcurrent is notified to the outside, and the power is not supplied to the power display unit 4 so that the trigger power is not applied to the trigger 10. Thus, the triac 10a Off, In the short-circuit detection driver 8 that receives a voltage value corresponding to a current difference from the current transformer ZCT of the current detection converter 5 while receiving the above operation power, the inverting input terminal (-) is passed through the resistor R13 at the current transformer ZCT. PUT (PUT), resistor (R7) (R8) and capacitor (C4) (when the detected value is smaller than the reference voltage input to the non-inverting input terminal (+) through split resistors R17 and R18). After delaying a certain time by the time constant element of C5), while applying a trigger voltage to the gate of the thyristor SCR1, the short-circuit light-emitting diode LED2 is turned on to notify the outside of the bulb, A lamp short circuit and an overcurrent detection device of a street lamp for preventing power supply to the display unit 4 so that the trigger power is not applied to the trigger 10 so that the triac 10a is turned off.