KR920009672B1 - Lighting control device of function - Google Patents

Abstract

The lighting controller checks operating condition of the commercial line and the emergency generator utilizing switch input terminals so that emergency lighting is executed on commercial line power failure. The controller includes a relay turned on or off according to power condition of commercial line, a relay turned on or off according to power condition of the emergency generator, photo couplers (PH1,PH2) for applying contact states of the relays to the controller, and a switch (3) for selecting power source according to control signal transmitted from a controller.

Description

Lighting control device with power failure monitoring

1 is an example of a lighting control device having a conventional electrostatic terminal.

2 is another example of a lighting control device having a conventional electrostatic terminal.

3 is a circuit diagram of the present invention.

4 is a timing chart of the present invention.

5 is a circuit diagram illustrating an embodiment to which the lighting control terminal of the present invention is applied.

* Explanation of symbols for the main parts of the drawings

1: Commercial power 2: Emergency power

2a: Self-powered plant 3,3a, 3b: Switching machine

4: electrostatic terminal 5: signal converter

6: lighting control system 7: lighting control circuit

8,9: terminal

The present invention relates to a lighting control device having a power failure monitoring function, and in particular, to monitor the power failure of the commercial power in the lighting device equipped with the emergency power by the self-generator in addition to the commercial power source, the emergency power during the operation of the emergency generator without difficulty The main focus was on making it available for supply.

The conventional lighting control circuit having an electrostatic terminal has a switch (3) for selectively switching the commercial power source (1) and the emergency power source (2) as shown in FIG. 1, and the transformers from the commercial power source (1) and the emergency power source (2). (T ₁ , T ₂ ) and an electrostatic terminal (4) consisting of a signal converter (5) is connected to the lighting control system (6), the power selected by the switch (3) to the lighting control system (6) It is to be supplied to. The operation of such a circuit receives commercial power 1 and emergency power 2 from the electrostatic terminal 4, and transmits the state to the lighting control system 6. The power is directly supplied from the electrostatic terminal 4. The transformer T ₁ , T ₂ for monitoring voltage is connected, and a signal converter 5 for converting a commercial power supply into a signal suitable for the lighting control system 6 is connected. However, the electrostatic terminal 4 is required to supply the commercial power and emergency power in front of the switch in the facility, but in fact, due to the problem of the power equipment, by pulling the line from the power line in front of the switch 3, the electrostatic terminal ( 4) There are many problems to connect to and determine whether the emergency generator's ready state can be produced by emergency lighting load even in case of power failure, or whether the switching state of switcher (3) matches the output state of the electrostatic terminal. Difficult problems were followed.

In addition, the lighting control system having a conventional electrostatic terminal currently used to solve the conventional problems as described above, as shown in Figure 2 commercial power (1) and emergency power self-generator (2a) and electrostatic terminal power switch (3a) ) And an illumination load switch 3b, an electrostatic terminal 4, and an illumination control circuit 7 and a load terminal 8 and 9, the electrostatic terminal 4 being a self-generator 2a. By determining the power outage and emergency power state by the power establishment signal of), the power supply for the lighting load operates the switch 3a, 3b and transmits the power failure to the lighting control device. However, such a conventional lighting control device should be provided with a separate switch (3a, 3b) for the lighting load. At the same time, switching devices 3a and 3b must be operated as an electrostatic terminal, which leads to a large wiring connection and a complicated circuit configuration. The present invention is to solve the above-mentioned problems, commercial power and by using any switch input terminal existing in the lighting control device without a separate electrostatic terminal in all the lighting control device including the lighting control equipment The objective is to monitor the operational status of the emergency generator and to enable emergency lighting.

In general, it is inevitable that a large number of contact input terminals, such as switch input and sensor input, are required in a lighting control system. In the present invention, it is possible to monitor the emergency power and commercial power using the input terminal using a photocoupler.

When described according to the accompanying drawings as follows.

As shown in FIG. 3, the emergency power source 2 of the commercial power source 1 and the self-generator 2a is selected by the switch 3 to be supplied to the lighting control device 10 to turn on a lighting lamp, and the commercial power source. On the (1) side, the photo coupler PH ₁ of the lighting control device 10 is turned on by the commercial power identification signal a, and the photo coupler is generated by the emergency power identification signal b of the self-generating facility 2. PH ₂ is turned on so that the lighting control device 10 is operated. The commercial power identification signal (a) is output by the relay contact for detecting commercial power, and the emergency power identification signal (b) is a signal generated by the generator of the self-power generation equipment. The photocouplers PH ₁ and PH ₂ are switched by the recognition signals a and b to detect the state of the power supply.

Referring to the effects of the present invention as follows.

In the present invention, the power monitoring is performed at the same time the monitoring of the commercial power supply and emergency power, the input can be solved by the general switch input terminal by the contact input, depending on the facility emergency power establishment signal (b) or contact output of the generator If there is no signal, a relay can be attached to the power line to generate a signal (a) that can recognize whether the power is interrupted. If the signals (a) and (b) are short in the state where the commercial power source 1 and the emergency power source 2 are established, respectively, the signal a when the commercial power source 1 is normal, the photocoupler PH1 The photocoupler (PH ₁ ) operates because it is grounded at the diode ground point of the power supply, and the supply power (Vcc) flows from the collector of the phototransistor to the emitter. Therefore, the output signal (a ') becomes'high' level. (1) As opposed to the application, the photocoupler PH ₂ is turned off, and thus the output signal a1 becomes 'low' level. Similar self If the emergency power supply is established, the power plant (2) emergency power supply side relay contact pyebang because signal (b) is because the ground to the diode grounding point of the photocoupler (PH ₂₎ by a photocoupler (PH ₂₎ operating the power supply (Vcc ) Flows from the phototransistor collector to the emitter, so the output signal (b`) becomes' high '; if there is no emergency power, the photocoupler (PH ₂ ) is turned off and the output signal (b') is' low 'level. Becomes Therefore, if the signals of the signals (a ', b') can be used to detect the input state of the commercial power source and the emergency power, the emergency power unit (electrostatic unit) can be configured in the lighting control device.

4 is a timing chart of an electrostatic part providing method using the present invention, in which the signal a in FIG. 4 is a state of a commercial power supply having a high power supply normal, and a signal b is an emergency generator having a high power supply normal. In the power supply state, the signals (c) and (d) indicate the normal lighting pattern and the emergency lighting pattern state with the high illuminating state, respectively.

In FIG. 4, when the commercial power supply is out of power (t ₁ ), the power outage is recognized and the routine according to the present invention is carried out. After the power failure, the emergency generator 2a operates (7-8 seconds or 30 depending on the generator). The emergency generator power is established and the emergency generator power establishment signal is provided. The time t ₂ , and thus the time t ₁ -t ₂ , is recognized as a power outage and no power supply, and no illumination occurs. After the time t _{2 at} which the emergency generator power is established, the emergency generator power is supplied to the load side. Therefore, the time from the time t ₂ to the time t ₄ when the commercial power is turned on again may be determined as the power supply period by the generator during the power failure, and the power failure pattern should be supplied therebetween. However, even if the generator power establishment signal is issued, it is generally difficult to be sure that the generator is sufficiently ready to supply power to the lighting load, and it is difficult to judge that the switch 3 of FIG. 3 is in operation at that moment.

In addition, since lighting currents often flow more than 10 times the normal current when the lighting load is turned on, it is difficult to produce an emergency lighting pattern only by the power supply signal of the generator when the emergency lighting load is turned on at the same time. Therefore, in order to enhance the operation of the generator and the switch, the emergency lighting pattern is produced after the allowable time (t ₂ -t ₃ ) longer than a predetermined set time (10 seconds), and the time (t ₃ ) is the emergency lighting pattern before the power failure. Or, the AND value (common part lighting) of the normal pattern and the emergency lighting pattern scheduled at that time.

Now, when the commercial power returns to normal, the generator power stops at about 30-60 seconds depending on the time (t ₄ ) and emergency power generation system, and switches to the commercial power (t ₅ ), at which time flickering is less than about 100 msec. This occurs. However, if the flashing is performed in the normal lighting state, the influence of the inrush current (Rush Current) described above is also increased, and since the normal pattern is always lit a lot more than the emergency lighting pattern, it is not good in terms of series efficiency. Therefore, the return of the normal lighting unit from the emergency lighting unit causes the time (t ₆ ) to be executed after a few seconds (t ₅ ) of the time when the emergency generator power establishment signal disappears, and the emergency lighting unit provided only the common part of the predetermined emergency lighting pattern and the normal pattern. Therefore, only the lighting corresponding to the normal pattern to be added need be realized. Therefore, according to the present invention, it is certain that the emergency lighting pattern can be provided more easily and completely, and the power establishment signal of the emergency generator is recognized only when the power failure of the commercial power source is confirmed. Even normal lighting control is possible.

5 is a view showing an embodiment of the present invention using an extension switch of a lighting control terminal. FIG. 5 shows a configuration of a terminal to which an output circuit can be added as an option. 12 (G), the number of output points by the added option is 4 points (H), the circuit number is 1-16, and the switch (SW _1- SW ₁₆ ) for each lighting.

In general, even in a terminal capable of increasing the number of circuits by an option, a circuit for switch input is often configured, and only the lighting circuit H is added as an option H / W. Therefore, in the present invention, when the option of 16 circuits is added, the entire switch input is used for turning on and off the lighting load, and when only 12 circuits are used, the emergency generator power establishment signal G is used as the remaining switches (SW ₁₃ -SW ₁₆ ). ) And the commercial power status signal 27.

Therefore, according to the present invention, an emergency lighting apparatus in case of power failure can be provided in a more improved manner without requiring a separate device or a special circuit for power failure recognition.

Claims (1)

In the power failure monitoring function of the lighting control device that adds a power failure monitoring function to turn on the lights with an emergency power supply in case of a power failure and to turn on the lighting with a commercial power supply in a normal state, the relay operated according to the power operation on the commercial power source 1 side. The signal is provided by providing a contact signal (a) generated by this contact point and a relay contact operated by an emergency power supply on the side of the self-power generation equipment (2) to provide a signal (b) generated by this contact point. According to the state of (a, b), the light is inputted to the _two photocouplers (PH ₁ , PH ₂ ) in the lighting device, and output with the output signals (a ', b') that are output according to the on / off operation of the photocoupler. Lighting control device having a power failure monitoring function, characterized in that configured to be input to the control unit of the control device.

Images