KR102294201B1 - Repeater capable of monitoring disconnection and short circuit - Google Patents

Abstract

Disclosed is a repeater which can automatically detect disconnection or short circuit when the disconnection or short circuit occurs on an output line connected to a fire handler installed in an area under jurisdiction. The repeater for firefighting equipment controls the fire handler connected to the output line according to a fire handler operation signal transmitted from a receiver. The repeater comprises: an output unit which transmits the fire handler operation signal to the fire handler through the output line and generates output error information by monitoring the disconnection and the short circuit of the output line; and a central processing unit which reads the fire handler operation signal provided from the receiver, transmits the read signal to the output unit, and transmits the output error information transmitted from the output unit to the receiver. According to the present invention, the disconnection and the short circuit can be detected in an insulated state regardless of an output state to output the output error information, and a circuit introduced to the repeater can be automatically cut off when a short circuit accident occurs.

Description

A repeater for firefighting equipment that can monitor disconnection and short circuit

The present invention relates to a repeater for firefighting equipment capable of monitoring disconnection and short circuit of an output line connecting a fire handler such as an alarm bell or a visual alarm, and more particularly, on an output line connected to a fire handler installed in a jurisdictional area. It relates to a repeater for firefighting equipment that can automatically detect when disconnection or short circuit occurs.

Firefighting equipment means equipment used for all fire prevention activities such as early detection and confirmation of fire, firefighting work, and evacuation.

The alarm system is a facility for promptly notifying the occurrence of a fire, and an automatic fire detection system is a representative alarm system. it is equipment

In addition, when a fire occurs, the alarm system automatically detects the heat or smoke generated by the fire and detects the fact that a fire has occurred. to notify the person in charge of the facility and notify the residents of the facility.

In addition, the alarm facility may help extinguish a fire early by automatically controlling the operation of the fire extinguishing facility and the evacuation facility in conjunction with the fire extinguishing facility and the evacuation facility. In general, firefighting equipment includes automatic fire detection equipment, and automatic fire detection equipment includes a fire receiver, repeater, fire detector, transmitter, indicator light, alarm bell, siren, and the like.

Among these automatic fire detection facilities, the fire receiver receives or directly receives the fire signal transmitted from the fire detector and transmitter, the gas leakage signal transmitted from the gas leak alarm, or other various facility operation signals through a repeater, It is a device that notifies the person concerned with the occurrence of a gas leak or the operation status of the fire extinguishing facility, and plays a pivotal role in the automatic fire detection facility.

These fire receivers can be classified into various types according to the type and function of the fire signal, and are divided into P type (Proprietary type) and R type (Record type) according to the fire signal transmission method. is divided into GP type (Gas Proprietary type) and GR type (Gas-Record type). In addition, the fire receiver is divided into multi-signal type and accumulation type according to function, and in the case of P type and GP type, it can be divided into 1st class and 2nd class according to the number of circuits.

The R-type fire receiver transmits the signals generated from the fire detector and transmitter to the fire receiver through a repeater, and the repeater sends a unique signal for each line in a time-division manner and receives it. It can be used when you want to manage intensively in a location or when it may be necessary to increase the number of lines in the near future. And although the R-type fire receiver is more expensive than the P-type fire receiver, it has various functions such as a self-diagnosis function, firefighting equipment management function, and a screen display function for fire information, as well as facility expansion and maintenance, remote monitoring or Since it has many advantages such as remote control, easy connection with other systems, and high reliability, it is possible to construct and operate an efficient fire system.

However, although it is an R-type fire receiver with such high reliability and many advantages, in the connection between the repeater and the fire receiver, since it is a structure in which multiple repeaters are connected in parallel with one line from the fire receiver, a short circuit accident may occur in one repeater. , when a short circuit accident occurs in one of the repeater lines, the entire repeater line becomes short-circuited due to the short circuit, so all repeaters fall into an inoperable state at once.

In addition, if a disconnection occurs in any one of the repeater lines and power is not supplied, there is also a problem in that repeaters located after the disconnection site cannot be operated.

In addition, since several repeaters are connected in parallel on one line in this way, if an accident that comes into contact with the commercial AC power within the relay circuit occurs, an abnormal voltage due to the commercial AC power is applied to all repeaters, causing a fire as well as all repeaters. There is a problem that even the receiver can fall into a risk of failure.

Therefore, in the R-type fire receiver, if a short-circuit accident occurs in any one of the detection lines connecting the fire receiver and each repeater, or a short-circuit accident occurs in any one of the repeaters, the entire repeater will become inoperable. In case of disconnection in the repeater line, the repeater placed thereafter becomes inoperable, and in the event of an accident in contact with AC commercial power in the repeater circuit, the overvoltage application state spreads to all repeaters. There is a need to develop a technology that can solve the problem.

Republic of Korea Patent Registration No. 10-2134256 (published on July 15, 2020) Republic of Korea Patent Registration No. 10-1101352 (published on Jan. 02, 2012) Republic of Korea Patent Registration No. 10-1841727 (Notice on Aug. 8, 2018) Republic of Korea Patent Registration No. 10-2020356 (published on September 10, 2019)

Therefore, an object of the present invention is to check whether a fire handler such as an alarm bell or a visual alarm is connected on the output line, and to detect the disconnection or short circuit of the output line for firefighting equipment that can inform the manager of the occurrence of an abnormal state. To provide a repeater.

In order to achieve the above object of the present invention, in one embodiment of the present invention, in a repeater for firefighting equipment that controls a fire processor connected to an output line according to a fire processor operation signal transmitted from a receiver, the fire processor operation signal is An output unit that transmits to the fire processor through the output line and generates output error information by monitoring disconnection and short circuit of the output line, and reads the fire processor operation signal provided from the receiver and transmits it to the output unit, It provides a repeater for firefighting equipment including a central processing unit for transmitting the output error information transmitted from the receiver to the receiver.

According to the present invention, even if power is not supplied to the fire handler, output error information can be output by detecting the disconnection of the output line connecting the repeater and the fire detector. It is possible to output error information by detecting a short circuit between the fire handlers.

In addition, the present invention can automatically cut off the overcurrent flowing into the repeater when a short-circuit accident occurs in the boundary area that the repeater is responsible for, thereby preventing the short-circuit accident failure occurring in one repeater from spreading to all repeaters. can

In addition, since the present invention detects the disconnection and short circuit occurring in the output line in real time and outputs the result, the administrator can determine whether the repeater is operating normally without using a separate tester.

1 is a configuration diagram for explaining a repeater according to the present invention.
2 is a block diagram showing an embodiment of a repeater according to the present invention.
3 is a circuit configuration diagram showing an embodiment of an output unit according to the present invention.
4 is a circuit configuration diagram illustrating a power flow of an output unit in a non-output state without disconnection.
5 is a circuit configuration diagram illustrating a power flow of an output unit in a non-output state in which a disconnection occurs.
6 is a circuit configuration diagram illustrating a power flow of an output unit in an output state in which a short circuit occurs.

Hereinafter, a repeater for fire-fighting equipment (hereinafter, abbreviated as 'repeater for fire-fighting equipment') capable of monitoring disconnection and short circuit according to preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram for explaining a repeater according to the present invention, Figure 2 is a block diagram showing an embodiment of the repeater according to the present invention.

1 and 2, the repeater for firefighting equipment according to the present invention controls a fire processor connected to an output line according to a fire processor operation signal transmitted from a receiver, and monitors and outputs the disconnection and short circuit of the output line. It includes an output unit 500 for generating error information, and a central processing unit 200 for transmitting the output error information transmitted from the output unit 500 to a receiver, optionally receiving fire information transmitted from a detector or a transmitter. The input unit 400 provided to the central processing unit 200 and the power supply unit 300 receiving communication power from the receiver through a communication line connected to the receiver and receiving control power from commercial power may be further included.

Hereinafter, each component will be described in more detail with reference to the drawings.

1 and 2 , the repeater for firefighting equipment according to the present invention may further include a communication unit 100 .

The communication unit 100 is connected through a wired/wireless communication network (hereinafter abbreviated as 'communication network') including a receiver and a communication line to receive the fire handler operation signal transmitted from the receiver, and the fire handler operation signal When a control command such as , is received, it is transmitted to the central processing unit 200 . In this case, a control command may be transmitted between the receiver and communication through a polling address type communication using two communication lines. In the communication field, polling is a transmission control method that continuously checks the status of other programs or devices in one program or device, and generally checks whether devices are still connected and whether data transmission is desired. .

In addition, the communication unit 100 may transmit the fire information of the detector and the transmitter collected by the repeater to the receiver.

In addition, when the operation state of the fire processor is collected by the repeater, the communication unit 100 generates operation state information and transmits it to the receiver through a communication network. At this time, the communication unit 100 passes through the polling address method if the repeater's own address is incorrect, and receives the same address if it is the same.

Since the pulse power obtained from the communication line connected between the receiver and the repeater is approximately DC 24V, the communication unit 100 may change the DC 24V power to a constant voltage power of 5V, which is the voltage for the MCU 1 210 to operate. have. To this end, the communication unit 100 is provided with a voltage regulator for changing the DC 24V communication power provided from the receiver through the communication line into a constant voltage power of 5V.

More specifically, when the MCU 1 210 receives the necessary power through the communication line for communication with the receiver, the pulse power input from the receiver through the communication line is converted into direct current (DC) through the bridge diode. After the constant voltage device is used to drive the MCU 1 (210) made of DC 5V constant voltage power supply.

In this case, the diode serves to prevent reverse current, and the constant voltage element serves to convert DC 24V to 5V.

1 and 2 , the repeater for firefighting equipment according to the present invention includes a central processing unit 200 .

The central processing unit 200 has a built-in program for controlling the functions of all components of the repeater to control all components of the repeater. For this purpose, the communication unit 100, the power unit 300, the input unit 400, and the output connected to the unit 500 .

In addition, the central processing unit 200 transmits the fire information collected from the detector and the transmitter through the input unit 400 to the receiver through the communication unit 100 .

In addition, the central processing unit 200 controls the operation of a fire processor such as a fire extinguisher according to the fire processor operation signal received from the receiver. Specifically, the central processing unit 200 reads the fire handler operation signal received through the communication unit 100 and transmits it to the output unit 500 to control the operation of the fire handler, and the fire handler collected from the output unit 500 . of the operation state information is transmitted to the receiver through the communication unit 100 .

As a specific aspect, the central processing unit 200 according to the present invention adversely affects the communication between the receiver and the repeater due to noise introduced from the input unit 400 and the output unit 500 to prevent the communication disconnection. A first microcontroller (hereinafter, abbreviated as 'MCU 1') that manages the overall control of the repeater, and a second microcontroller that is in charge of managing the input unit 400 and the output unit 500 (hereinafter, 'MCU 2') may be abbreviated as ).

The MCU 1 210 controls the entire repeater according to a program installed in the repeater, and includes a second microcontroller and a second microcontroller so that noise input through the input unit 400 and the output unit 500 does not interfere with communication with the receiver. are separated

As necessary, the MCU 1 210 receives communication power from the communication unit 100 . The control power supplied from the commercial power source to the power supply unit 300 is monitored, and when an abnormal condition occurs, a power supply unit check signal is generated and transmitted to the receiver. This is because even if the control power management module of the power supply unit 300 that manages the control power fails due to the control power, the repeater maintains the communication state between the receiver and the repeater using the communication power provided from the receiver, and the power supply unit 300 is checked. This is to transmit the signal to the receiver.

The MCU 2 220 controls the output ON/OFF of power provided to the fire processor through the output unit 500, and outputs a fire processor operation signal or a relay operation signal generated based on the fire processor operation signal to the output unit. (500) is provided.

In addition, MCU 2 220 transmits to the receiver through the communication unit 100 collected by the input unit 400, and when an output command transmitted from the receiver is received, an alarm signal is provided to the fire handler through the output unit 500. can

In addition, when the MCU 2 220 receives a short signal or output error information including a short signal from the output unit 500 , it transmits it to the receiver through the communication unit 100 so that the manager can check it. In this case, when the output error information is received, the MCU 2 220 may output the output error information as a sound or an image through an LED provided therein so that the manager who has checked the repeater can understand it.

Unlike the MCU 1 210 that receives communication power, the MCU 2 220 may be configured to receive control power from the power supply unit 300 .

As such, the power used by the MCU 1 210 and the MCU 2 220 is configured to be separated. This is so that even if power is not supplied from the power supply unit 300 , the MCU 1 210 continues to communicate with the receiver so that the repeater notifies the receiver of a problem due to a power supply failure.

1 and 2 , the repeater for firefighting equipment according to the present invention includes a power supply unit 300 .

The power supply unit 300 provides power supplied from the outside to the communication unit 100 , the input unit 400 , the MCU 2 220 , and the output unit 500 , and functions to stably protect the power and prevent overvoltage and short circuit. provides

The power supply unit 300 may change the DC 24V power supplied from the outside to a constant voltage power of 5V, which is a voltage for the MCU 2 220 of the repeater to operate. To this end, the power supply unit 300 is provided with a voltage regulator for changing the DC 24V control power supplied from the outside to a constant voltage power of 5V.

If necessary, the power supply unit 300 may provide power to a detector and a transmitter connected through the input unit 400 . At this time, if the central processing unit 200 is configured with the MCU 1 210 and the MCU 2 220 , the MCU 2 220 provides power to the detector and the transmitter through the input unit 400 .

1 and 2 , the repeater for firefighting equipment according to the present invention may further include an input unit 400 .

The input unit 400 receives the fire information transmitted from the detector and the transmitter and provides it to the central processing unit 200, and may provide a function of monitoring disconnection of the input line connecting the detector and the transmitter and the repeater.

As described above, when the central processing unit 200 is configured with the MCU 1 210 and the MCU 2 220 , the input unit 400 is connected to the MCU 2 220 .

3 is a circuit configuration diagram showing an embodiment of the output unit 500 according to the present invention.

1 to 3 , the repeater for firefighting equipment according to the present invention includes an output unit 500 .

The output unit 500 receives the fire handler operation signal transmitted through the central processing unit 200 to control the operation of the fire handler such as an alarm bell, an evacuation lamp, a fire shutter, a smoke damper, etc. Power that can operate the fire handler is provided to the fire handler, such as a bell or a visual alarm installed on the output line, so that the building occupants or visitors can check it.

In this way, the output unit 500 controls the operation of the fire processor when a fire occurs, and serves to inform the residents or visitors of the fire occurrence through sound or image.

As a specific aspect, the output unit 500 according to the present invention includes an output driving circuit 510 , an output protection circuit 520 , an output error checking circuit 530 , and an output terminal block 540 , and optionally an output A display circuit 550 may be further included.

The output driving circuit 510 constituting the output unit 500 according to the present invention includes a relay for switching an on-off state of an internal switch according to a fire handler operation signal provided from the central processing unit 200, the relay and the output A protection resistor (R91) installed between the terminal blocks (540) to reduce the voltage and limit the current to prevent the fire handler from operating when the power bypassing the off relay passes through the output terminal block (540) is included.

When the fire handler operation signal is provided from the central processing unit 200, the output driving circuit 510 passes the power supplied from the power supply unit 300 through the relay in which the internal switch is turned on, and then supplies it to the output terminal block 540. and, if the fire handler operation signal is not provided, the internal switch does not pass through the relay switched to the off state, so the relay is bypassed and a protective resistor (as an example, 20kΩ) and then supplied to the output terminal block 540 .

If necessary, an output display circuit 550 may be provided between the central processing unit 200 (or MCU 2 ) and the output driving circuit 510 .

The output display circuit 550 includes a resistor R81 connected to the power terminal Vcc to display the output state of the output unit 500 when a fire processor operation signal is transmitted from the central processing unit 200, and one end It is composed of a light emitting diode (LED21) connected to the resistor (R81) and the other end is connected to the output driving circuit (510).

When the above-described central processing unit 200 receives the fire handler operation signal, the connection port with the output unit 500 maintaining the high level is switched to the low level, and accordingly, the output unit 500 is turned on as a current flows through the coil inside the relay connected to the power terminal (Vcc) and the switch inside the relay is turned on. power is provided. Here, R81 is a protection resistor for protecting the light emitting diode (LED21), and D41 is a protection diode for suppressing the counter electromotive voltage generated in the relay coil when the relay is on and off.

In other words, when the low (0V) signal, which is the fire handler operation signal, is transmitted from the MCU 2 220 to the output unit 500 , the light emitting diode LED21 of the output display circuit 550 is turned on.

The output protection circuit 520 constituting the output unit 500 according to the present invention is between the output driving circuit 510 and the output terminal block 540 in order to block the overcurrent flowing from the output line through the output terminal block 540 . It includes a polySwitch for connecting the circuit by blocking the current for overcurrent and returning the resistance value to the initial state when the temperature is lowered again.

The poly switch is installed between the relay of the output driving circuit 510 and the output terminal block 540 , and is turned off when an overcurrent flows from the output line through the output terminal block 540 .

If necessary, the output protection circuit 520 may include a rectifying diode D51 between the poly switch and the output terminal block 540 . The rectifying diode D51 restricts the current of the circuit to flow in only one direction from the poly switch to the output terminal block 540, and prevents reverse current flowing from the output terminal block 540 to the poly switch.

The output error checking circuit 530 constituting the output unit 500 according to the present invention is installed in the circuit connecting the relay and the protective resistor of the output driving circuit 510, and after passing through the relay, it is a poly switch. When power that does not pass and bypasses is detected, the output error information is generated and the output error information is transmitted to the central processing unit 200, and after passing the protection resistor, the power that does not pass through the output terminal block 540 and bypasses is detected When the output error information is generated, the output error information is transmitted to the central processing unit 200 .

At this time, when an output error signal is provided from the output error check circuit 530 to the MCU 2 220 when the output is off, the MCU 2 220 determines that the disconnection is made. And when an output error signal is provided to the MCU 2 220 from the output error check circuit 530 when the output is on, the MCU 2 220 determines that it is a short circuit.

More specifically, the output error checking circuit 530 transmits the output error information (HIGH signal) to the central processing unit 200 when the power that bypasses the turned-off polyswitch is introduced after passing through the relay, and the protection resistance When power bypassing the output terminal block 540 is supplied after passing through, the port coupler PC1 is included to generate output error information (HIGH signal) and then transmit it to the central processing unit 200 .

In addition, the output error check circuit 530 is installed between the protection resistor R91 and the port coupler PC1, and as a disconnection occurs in the output line, the power flowing from the protection resistor R91 to the port coupler PC1 A Zener diode D31 for dropping the voltage of may be provided. At this time, as the Zener diode D31, it is preferable to use a Zener diode that attenuates the power flowing from the protection resistor R91 to about 12V.

In addition, the output error check circuit 530 is installed on the input side of the port coupler (PC1) to check the disconnection and limit the current, the first resistor (R71), and the port coupler (PC1) is installed on the input side to reduce noise A first capacitor D21 to hold it may be provided. In this case, the first resistor R71 may be formed to have a resistance value of about 20 kΩ.

In addition, the output error check circuit 530 includes a capacitor C31 having one end connected to the photocoupler PC1 on the output side of the photocoupler PC1 to be grounded, and a resistor having one end connected to the photocoupler PC1 and grounded ( R65) may be provided. In this case, the resistor R65 may be formed to have a resistance value of about 200 kΩ.

At this time, when power having a predetermined voltage is not supplied, the photocoupler PC1 generates a normal signal (LOW signal) and transmits it to the central processing unit 200 .

4 is a circuit configuration diagram showing the current flow of the output unit in a non-output state where there is no disconnection, FIG. 5 is a circuit configuration diagram showing the current flow of the output unit in the non-output state in which a disconnection occurs, and FIG. 6 is an output with a short circuit It is a circuit diagram showing the current flow of the output part in the state.

If there is no disconnection in the output line in the non-output state of the output unit 500 in which the fire processor operation signal is not transmitted to the relay, the power supplied to the output unit 500 bypasses the relay RY1 as shown in FIG. A voltage drop and current limit are generated to prevent the fire processor from operating while passing through the protection resistor R91 , and power flows down to GND through the terminating resistor and the load resistor formed in the output terminal block 540 .

As such, if there is no disconnection in the output line, the power passing through the protective resistor (R91) adjacent to the load resistance of the fire handler cannot pass through the Zener diode (D31) because the voltage drops to 12V or less, so the output error checking circuit The port coupler (PC1) of 530 does not operate.

When a disconnection occurs in the output line in the non-output state of the output unit 500 in which the fire handler operation signal is not transmitted to the relay, the power supplied to the output unit 500 bypasses the relay RY1 as shown in FIG. 5 . to pass through the protection resistance (R91), but the load resistance of the fire handler does not affect the protection resistance (R91) due to the disconnection of the output line. Since it does not, the photocoupler PC1 of the output error checking circuit 530 is operated through the Zener diode D31.

When a short circuit occurs in the output line in the output state of the output unit 500 through which the fire processor operation signal is transmitted to the relay, the poly switch of the output protection circuit blocks between the relay and the output terminal block 540 as shown in FIG. Therefore, the power that bypasses the poly switch and passes through the output error checking circuit 530 operates the port coupler PC1 to transmit the output error information to the central processing unit 200 .

Although described above with reference to the preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

100: communication unit 200: central processing unit
210: MCU 1 220: MCU 2
300: power unit 400: input unit
500: output unit 510: output driving circuit
520: output protection circuit 530: output error check circuit
540: output terminal block 550: output display circuit

Claims (5)

A repeater for firefighting equipment that controls a fire handler connected to an output line according to a fire handler operation signal transmitted from a receiver,
an output unit for transmitting the fire processor operation signal to the fire processor through the output line and generating output error information by monitoring disconnection and short circuit of the output line;
a central processing unit that reads the fire processor operation signal provided from the receiver and transmits it to the output unit, and transmits the output error information transmitted from the output unit to the receiver;
an input unit for receiving fire information transmitted from a detector or a transmitter and providing it to a central processing unit; and
Further comprising a power supply receiving communication power from the receiver through a communication line connected to the receiver and receiving control power from commercial power,
The central processing unit receives the control power from the power supply unit and transmits the fire information received through the input unit and the output error information received through the output unit to the receiver, and the noise input through the input unit and the output unit is a receiver. The first microcontroller is separated from the second microcontroller so as not to interfere with the communication and receives the communication power from the power supply unit, monitors the control power supplied to the power supply unit, and generates a power supply unit check signal when an abnormal condition occurs and transmits it to the receiver A repeater for firefighting equipment, characterized in that it consists of a controller. delete The method of claim 1, wherein the output unit
When the relay for switching the on-off state of the internal switch according to the fire processor operation signal provided from the central processing unit and the power supply installed between the relay and the output terminal block to bypass the off relay passes through the output terminal block an output driving circuit including a protective resistor that drops the voltage and limits the current to prevent the fire handler from operating;
An output protection circuit installed between the relay and the output terminal block and including a poly switch that is turned off when an overcurrent flows from an output line through the output terminal block, and
It is installed between the relay and the protection resistor, and after passing through the relay, when power that bypasses the turned-off polyswitch is supplied, the output error information is transmitted to the central processing unit, and after passing through the protection resistance, the output terminal block is connected. A repeater for firefighting equipment, characterized in that it includes an output error check circuit including a port coupler that transmits output error information to the central processing unit when the bypassing power is supplied. The method of claim 3, wherein the output error checking circuit
A repeater for firefighting equipment, characterized in that the zener diode is installed between the protective resistor and the photocoupler and drops the voltage of the power flowing from the protective resistor to the photocoupler when a disconnection occurs in the output line. The method of claim 3, wherein the output error checking circuit
A repeater for firefighting equipment, characterized in that the first resistor installed on the input side of the port coupler to check the disconnection and limit the current, and the first capacitor installed on the input side of the port coupler to catch the noise.

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