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KR-102963214-B1 - Emergency lighting control device according to fire detection

KR102963214B1KR 102963214 B1KR102963214 B1KR 102963214B1KR-102963214-B1

Abstract

The present invention relates to a functional emergency lighting device with a built-in detection function, configured to solve the problem that emergency lights do not turn on unless the external power is cut off in the event of a building fire or collapse by configuring an internal circuit so that the emergency lights operate based on signals detected by fire, smoke, etc. detectors without cutting off the external power. To achieve the above objective, the functional emergency lighting device with a built-in detection function according to the present invention comprises: a power supply unit that supplies stable DC power including an AC-DC power converter SMPS and a step-down circuit; a fire detection unit that detects a fire using a voltage method and outputs the status; a battery unit that supplies DC power when a fire occurs; a control unit that monitors the fire detection status input from the fire detection unit using an MCU to determine the occurrence of a fire and controls the emergency lights on/off via relay control when a fire occurs; a relay output unit that outputs a control signal for the emergency lights according to the on/off control of the control unit; and an emergency lighting unit that turns on the emergency lights according to the output signal of the relay output unit.

Inventors

  • 모은영

Dates

Publication Date
20260511
Application Date
20250516

Claims (7)

  1. A power supply unit (110) that supplies stable DC power including an AC-DC power converter SMPS and a step-down circuit; A fire detection unit (120) that detects a fire using a voltage method and outputs the status; Battery unit (130) that supplies DC power in case of fire; A control unit (140) that monitors the fire detection status input from the fire detection unit (120) using an MCU to determine the occurrence of a fire and controls the emergency lighting on/off by relay control when a fire occurs; A relay output unit (150) that outputs a control signal for the emergency light according to the on/off control of the control unit (140) above; It includes an emergency lighting unit (160) that lights up an emergency light according to the output signal of the relay output unit (150) above, and The above power supply unit (110) is, A fuse (F1) that protects the entire circuit in case of overcurrent; Thermistor (TH1) that mitigates initial surge current upon power-on; Bridge rectifier (D3) that rectifies AC power into DC; High-voltage filter capacitors (EC1, EC2) that smooth the rectified voltage to remove ripple; A PWM controller (U1) that performs high-efficiency DC-DC conversion through switching operation and operates together with a transformer (T1) to regulate the output voltage through high-frequency PWM control; A transformer (T1) that performs insulation and voltage conversion; A high-speed rectifier diode (D7) that controls the direction of the switching voltage to form a DC voltage; Inductor and output filter (L1, C7, C15) for rectifying and smoothing input power; Includes a step-down IC (U6) that converts +24V power to +5V and supplies power to the MCU, The above power supply unit (110) is, When AC power is applied, the fuse (F1) interrupts the circuit if a current exceeding a specified amount flows, and when AC power is applied, the thermistor (TH1) mitigates the surge current and is rectified into DC through the bridge rectifier (D3). The rectified voltage has ripple removed by high-voltage filter capacitors (EC1, EC2), and when the removed voltage is applied to the PWM controller (U1), the output voltage is regulated through PWM control, then converted from high voltage to low voltage through the transformer (T1) and provides primary/secondary isolation, and the direction of the switching voltage is controlled by the high-speed rectifier diode (D7) to form a DC voltage (+24V). The above relay output unit (150) is; Relay (RL1) for turning on/off a high-current load; A transistor (NP1) that amplifies the low-current control signal of the MCU into a relay driving current; Diode (D4) that protects against back EMF generated when the relay coil is cut off; It includes an external output connector (CON1) for connecting external equipment or loads, and A functional emergency lighting device with a built-in detection function, characterized in that when the transistor (NP1) is turned on according to the condition BE voltage > 0.7V, current flows through the relay (RL1) coil and a magnetic field is generated to operate the switch, and an electrically completely isolated input/output path is configured to enable high-voltage circuit isolation control.
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  4. In Article 1, The above control unit (140) is; A microcontroller (U2) that performs relay control, sensor signal detection, and system logic; Terminal connection part (CON2) supporting firmware upload/debugging; It includes a resistor and a white LED (R4, LED1) that indicate the system status, A functional emergency lighting device with a built-in detection function characterized by converting an external analog input value into a digital value via an ADC input, determining a condition, and controlling a relay.
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  6. In Article 1, The above fire detection unit (120) is; Voltage divider resistor and pull-down resistor (R35, 55, 75) for dividing the input voltage; Capacitors (C1, C2) for removing noise from the above voltage; Connector (CON3) for inputting a 24V signal from the outside; A functional emergency lighting device with a built-in detection function, characterized by including an ADC input port (ADC) that sends a fire detection input signal to the control unit (140).
  7. In claim 1, the emergency lighting unit is, A functional emergency lighting device with a built-in detection function, characterized by being installed in a sensor light with a built-in entry/exit detection sensor, an emergency device that operates when the external power is cut off, etc.

Description

Functional emergency lighting control device with built-in detection function The present invention relates to a functional emergency lighting device with a built-in detection function, and more specifically, to a functional emergency lighting device with a built-in detection function configured to solve the problem that the emergency lighting does not turn on unless the external power is cut off in the event of a building fire or collapse by configuring an internal circuit so that the emergency lighting operates based on a signal detected by a detector of fire, smoke, etc., without cutting off the external power. Generally, emergency lighting refers to a lamp that is lit for a certain period of time using a battery built inside the emergency light in the event of an emergency such as a fire or power outage in high-rise buildings, government offices, sports stadiums, and concert halls, so that the direction of entry can be easily found. However, although conventional emergency lighting as described above allows fire safety managers to check the operating status of the equipment in real time, it has limitations in that it is installed near the ceiling, making management via manual switches cumbersome, and it merely serves the function of lighting without enabling active response to emergencies. In particular, conventional emergency lighting devices have an internal battery connected to a power source, and the emergency lights operate only when the power is cut off due to a fire or earthquake. Since they operate in this manner, there was a problem in that the emergency lights would not turn on in the event of a fire or collapse unless the external power was cut off. FIG. 1 is a control block diagram showing a preferred embodiment of a functional emergency lighting device with a built-in detection function according to the present invention, FIG. 2 is a circuit diagram showing an embodiment of FIG. 1, FIG. 3 is a circuit diagram showing in detail an embodiment of the power supply unit of FIG. 1, FIG. 4 is a circuit diagram showing in detail an embodiment of the control unit of FIG. 1, FIG. 5 is a circuit diagram showing in detail an embodiment of the relay output section of FIG. 1. FIG. 6 is a circuit diagram showing in detail an embodiment of the fire detection unit of FIG. 1. The present invention is susceptible to various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each drawing. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and/or" includes a combination of a plurality of related described items or any of a plurality of related described items. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless clearly otherwise indicated in the context. Terms such as “comprising” or “having” in this application are intended to specify the presence of the features, numbers, steps, movements, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, movements, components, parts, or combinations thereof. A preferred embodiment of the present invention will be examined in detail with reference to the attached drawings. FIG. 1 is a control block diagram showing a preferred embodiment of a functional emergency lighting device with a built-in detection function according to the present invention, and FIG. 2 is a circuit diagram showing an embodiment of FIG. 1. As described above, the functional emergency lighting device with a built-in detection function according to the present invention includes a power supply unit (1