KR101865001B1 - Fire detecting system for P-type receiver - Google Patents

Fire detecting system for P-type receiver Download PDF

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Publication number
KR101865001B1
KR101865001B1 KR1020170132594A KR20170132594A KR101865001B1 KR 101865001 B1 KR101865001 B1 KR 101865001B1 KR 1020170132594 A KR1020170132594 A KR 1020170132594A KR 20170132594 A KR20170132594 A KR 20170132594A KR 101865001 B1 KR101865001 B1 KR 101865001B1
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South Korea
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terminal
resistance
voltage value
primary
circuit
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KR1020170132594A
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Korean (ko)
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황영두
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주식회사 선진기술산업
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
    • G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

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  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire Alarms (AREA)

Abstract

The present invention relates to a P-type receiver fire detection system for precisely grasping the position of a detection sensor by using a change in resistance and a voltage value so that a location where a fire occurs can be accurately grasped.
The P-type receiver fire detection system according to the present invention comprises a P-type receiver having a circuit terminal and a common terminal, and a plurality of P-type receivers connected in parallel to a wire connecting the circuit terminal and the common terminal, A terminal resistor connected in parallel to a wire connecting the circuit terminal and the common terminal, and a terminal resistor connected between the terminal resistor and the common terminal so that the output voltage value can be changed with respect to the input voltage value, A second resistor connected to the terminal of the electric wire connected to the resistor and connected to the ground terminal, and a position detector for measuring the output voltage value during operation of the sensor to detect the activated sensor, And the resistance value of the differential resistance is transmitted to the electric wire.

Figure R1020170132594

Description

FIELD OF THE INVENTION The present invention relates to a P-type receiver fire detection system,

The present invention relates to a P-type receiver fire detection system that accurately detects the position of a sensing sensor by using a change in resistance and a voltage value so that a place where a fire occurs can be accurately grasped.

Generally, a fire detection system (fire protection system) is mainly a P type system and an R type system.

P-type system is a switching circuit structure of ON / OFF contact type. It is a method to detect fire only by simple power supply. R type system incorporates a CPU and communication circuit in each detector, and analog signal is transmitted by communication line to central computer It is a kind of digital method that detects the surrounding fire phenomenon.

When the P type sensor detects fire such as heat or smoke in the P type sensor, the contact switch inside the detector is contacted, the electricity is simply energized, and a buzzer sounds to the transmitter set of the shorted area. At the same time, The fire is displayed.

However, the P-type system can detect whether or not a fire has occurred, but it is impossible to pinpoint the type of the fire detector.

In other words, the P-type system can not accurately track the position of each detector distributed in the transmitter set, instead of being inexpensive, and can not accurately track the location of the fire area in case of an emergency such as a fire, The diffusion path, the evacuation route, etc. can not be predicted in advance, and there is a limitation in the fire response requiring the fastest system as a system which can depend on passive fire place confirmation.

Also, in case of a failure of an installed system, all of the detectors in the entire floor or the entire area of the corresponding floor have to be checked and repaired.

A method for solving such a problem is specifically known in a conventional " P type address type automatic fire detection system (Patent No. 10-1242424) in which a characteristic resistance value is applied to each detector.

However, the conventional " P type address type automatic fire detection system (Patent No. 10-1242424) applying characteristic resistances to each detector has various problems.

As shown in FIG. 1, in the conventional " P type address type automatic fire detection system applying characteristic resistances to detectors " (Patent No. 10-1242424), it is impossible to confirm a short circuit and disconnection because there is no terminal resistance. When adding a resistor, the system can not be maintained because it recognizes the termination resistor itself as a characteristic resistor.

Also, if a fire is detected by one detector, it is possible to identify the detector. However, if a fire is detected simultaneously by various detectors, it is impossible to grasp it. If the D / A converter fails, There is a problem that can not be done.

Korean Patent No. 10-1242424 (March 03, 2013)

SUMMARY OF THE INVENTION An object of the present invention is to provide a P-type receiver fire detection system that accurately detects the position of a sensing sensor by using a change in resistance and a voltage value so that a place where a fire occurs can be accurately grasped.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a P-type receiver fire detection system comprising: a P-type receiver having a circuit terminal and a common terminal; A terminal resistor connected in parallel to an electric wire connecting the circuit terminal and the common terminal, and a terminal resistor connected in parallel to the circuit terminal and the common terminal, A secondary resistance connected to an end of a wire to which a termination resistor and a primary resistance are connected and connected to a ground terminal, and a position determining unit for measuring an output voltage value during operation of the sensing sensor, The resistance value of the connected primary resistor is transmitted to the electric wire.

The present invention has the following various effects.

First, it is possible to grasp whether a circuit is broken or disconnected by applying a terminating resistor.

Second, it is possible to precisely select an activated sensing sensor by measuring the output voltage value by simultaneously applying the primary resistance and the secondary resistance.

Third, since the present invention uses a voltage distribution law to select a sensor, it can be accurately selected even if several sensors are operated at the same time.

Fourth, the present invention is very simple in structure and can be applied to a conventional P-type receiver.

1 is a diagram illustrating a conventional fire detection system.
2 is a view illustrating a P-type receiver fire detection system according to the present invention.
3 is a diagram illustrating a voltage distribution law of a P-type receiver fire detection system according to the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings, and the same reference numerals are given to the background art and the constituent elements of the constitution which have already been described.

In addition, the description of the P type receiver fire detection system of the present invention is not intended to limit the present invention to the preferred embodiments, but may be embodied in various forms, and the shape, size, But it is possible to change variously if the same / similar effect can be realized.

2, a P-type receiver fire detection system according to an embodiment of the present invention includes a P-type receiver 100, a sensing sensor 200, a primary resistance 300, a terminating resistor 400, A differential resistor 500 and a localizer 600.

The P-type receiver 100 includes a main body 110 forming an outer appearance and a common terminal 130 connected to the plurality of circuit terminals 120 and the circuit terminals 120 via a wire C. [

The circuit terminals 120 may be provided in a number of five circuits, such as 25 circuits, and a plurality of detection sensors 200 and a primary resistor 300 may be provided for each circuit.

The sensing sensor 200 and the primary resistance 300 are connected in parallel to the electric line C connecting the circuit terminal 120 and the common terminal 130. The sensing sensor 200 and the primary resistance 300 are connected in parallel, Are provided in a number corresponding to each other. The sensing sensor 200 is disposed in each room of the building to detect an emergency situation such as a fire.

Generally, when the detection sensor 200 operates, an alarm sounds as the current flows, thereby indicating that a fire has occurred.

The present invention is not limited to merely detecting the occurrence of a fire but it is possible to precisely determine which one of the plurality of the sensors 200 has been operated and detect the fire The primary resistance 300 is connected in parallel.

The primary resistors 300 are provided in a number corresponding to the number of the sensing sensors 200, and all the primary resistors 300 have different resistance values so that the sensing sensor 200 can be accurately grasped.

The termination resistor 400 is connected in parallel to an electric wire C connecting the circuit terminal 120 and the common terminal 130 so that a short circuit and a disconnection of the circuit can be confirmed and a voltage change can be detected.

Since the primary resistance 300, the sensing sensor 200, and the terminating resistor 400 are connected in parallel, the voltage value held in the circuit is kept constant. Depending on whether the sensing sensor 200 is operated or not, And the current value are different.

The secondary resistor 500 is connected to the terminating terminal of the wire C connected to the terminating resistor 400 and the primary resistor 300 and is connected to the ground terminal 140. When the sensing sensor 200 is operated, So that the voltage value output by the value of the primary resistance 300 can be changed.

In the absence of the secondary resistance 500, since the primary resistance 300, the sensing sensor 200, and the terminating resistor 400 are all connected in parallel, the voltage value output even if the sensing sensor 200 is operated It is necessary to grasp the detection sensor 200 as a current value.

However, since the current value changes very finely, it is not desirable to precisely detect and grasp it because it is very difficult and unstable.

Therefore, in the present invention, the secondary resistance 500 is additionally provided so as to grasp the activated sensing sensor 200 using the variable voltage value.

The position sensing unit 600 is connected to the end of the electric wire C to measure a variation voltage value during operation of the sensing sensor 200 and compares the voltage variation value with a previously stored voltage value to determine which sensing sensor 200 is operated.

The localizer 600 recognizes the sensing sensor 200 using a voltage distribution law in which an output voltage value changes according to the value of the primary resistance 300. For this purpose, the primary resistance 300 connected to each sensing sensor 200 is provided with a plurality of resistors having different resistance values so as to detect a change in the output voltage value, And has a fixed resistance value.

The position determination unit 600 can measure the fluctuation voltage value using the analog signal as it is, and can also measure the fluctuation voltage value by converting the fine analog signal into the digital value using the A / D converter.

When a fire occurs at a plurality of locations simultaneously, a plurality of detection sensors 200 can operate at the same time. Since the resistance values of the primary resistors 300 connected to the respective sensors 200 are different, It is possible to grasp which sensor 200 is detected.

That is, even if one or more of the plurality of detection sensors 200 operate simultaneously, the position detection unit 600 may output a value of the primary resistance 300 provided to detect the detection sensor 200 All of the variable voltage values having been input in advance are input in advance, and the detected variable voltage value is compared with the input variable voltage value to grasp the operated sensing sensor 200.

Hereinafter, an embodiment of the present invention for determining the position of the sensing sensor 200 using the voltage distribution law will be described with reference to FIGS. 2 and 3. FIG.

As shown in FIG. 3, in the voltage division law, R 1 is connected between V in and Vout, and R 2 is connected between Vout and the ground terminal 140, and the voltage value output by the following equation is calculated .

Figure 112017100356311-pat00001

In general, a 24 V voltage is input in the fire detection system and 10 KΩ is applied as the terminal resistance value (400). In the embodiment of the present invention, a secondary resistor 500 having a resistance of 10 K is applied and two primary resistors 300 having a resistance of 100 and 500 are applied.

Substituting in the above equation,

V in = 24V,

R 1 = active primary resistance + termination resistance (10KΩ),

R 2 = secondary resistance (10KΩ)

.

If the primary sensor 300 is not connected because the detection sensor 200 is not operated, a voltage of 12 V is output when a voltage of 24 V is inputted, thereby indicating that the sensor 200 is not operating have.

When a fire occurs at a position where the first sensing sensor 200 is operated, a primary resistance 300 of 100? Is connected, and a resistance of about 99? Is caught by the front end of the circuit by the parallel resistance calculation.

Since the secondary resistance 500 of 10K? Is connected to the terminal of the circuit, the output voltage of 23.7V is measured by the voltage division law. The output voltage is compared with the input voltage value, It is possible to grasp whether the primary resistance 300 is connected to the secondary winding 200.

In addition, when the second sensing sensor 200 operates and a primary resistance 300 of 500? Is connected, a resistance of about 476? Is applied to the front end of the circuit, and a secondary resistance 500 of 10K? The output voltage value of about 22.91 V is measured.

When the first sensor 200 and the second sensor 200 operate at the same time and a 100 Ω and 500 Ω primary resistor 300 are simultaneously connected, a resistance of about 82.64 Ω is applied to the front end of the circuit. An output voltage value of about 23.8 V is measured by a secondary resistance 500 of 10 K? Connected to the terminal end.

When the output voltage measured by the position detector 600 is 23.7 V when a voltage of 24 V is input, a primary resistance 300 of 100? Is connected and the first detection sensor connected thereto operates.

When a voltage of 24 V is inputted in the same manner, when the output voltage measured by the position sensing unit 600 is 22.91 V, the primary resistance 300 of 500? Is connected and the second sensing sensor connected thereto is operated. 600), the primary resistance 300 of 100? And 500? Is connected simultaneously, and the first and second detection sensors connected thereto are operated at the same time.

For example, in order to facilitate understanding, the primary resistance 300 of 100Ω and 500Ω is taken as an example. However, in actual application, the resistance value of the primary resistance 300 may be variously changed And it is preferable to select the resistance value of the primary resistor 300 so that a redundant resistance value is not outputted even if the secondary resistor 300 operates at the same time.

C: wire 100: P type receiver
110: main body 120: circuit terminal
130: common terminal 140: ground terminal
200: Detection sensor 300: Primary resistance
400: Termination resistance 500: Secondary resistance
600:

Claims (4)

A P-type receiver having a circuit terminal having a plurality of circuits, and a common terminal connected to a plurality of circuit terminals and electric wires;
A plurality of primary resistance and sense sensors connected in parallel to a plurality of electric wires connecting the plurality of circuit terminals and the common terminal,
A terminal resistor connected in parallel to an electric wire connecting the circuit terminal and the common terminal to detect a short circuit or disconnection of the circuit and detect a voltage change;
A secondary resistor connected to an end of a wire to which the termination resistor and the primary resistor are connected so that an output voltage value may vary with respect to an input voltage value when the sensing sensor operates; And
And a position determination unit for measuring an output voltage value in operation of the detection sensor and recognizing the operated detection sensor,
Wherein the plurality of primary resistors have different resistance values so that one or more of the plurality of detection sensors operate simultaneously so that the output voltage value is not duplicated when the resistance value is transmitted to the wire,
Wherein the localization unit stores all voltage values that can be output by a combination of a plurality of primary resistances provided in the localization unit.
The method according to claim 1,
Wherein the plurality of primary resistors have different resistance values and the position determining unit grasps the position of the operated sensor by using a voltage distribution law in which a voltage value varies as a primary resistance is connected, Type receiver fire detection system.
delete 3. The method of claim 2,
Wherein the localization unit is an A / D converter.
KR1020170132594A 2017-10-12 2017-10-12 Fire detecting system for P-type receiver KR101865001B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102076768B1 (en) * 2019-10-10 2020-02-12 (주)그랜드아이테크놀러지 Automatic fire extinguishing system to detect disconnection of gas detector and gas shutoff line
CN113671590A (en) * 2021-07-01 2021-11-19 浙江大华技术股份有限公司 Infrared sensor and infrared sensing system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080079911A (en) * 2007-02-28 2008-09-02 김현우 Fire transmitter dispatching position identification unit
KR100862538B1 (en) * 2008-06-10 2008-10-09 김종훈 Integrated supervisory monitoring system of fire receiver
KR20120046866A (en) * 2010-10-29 2012-05-11 주식회사 케이티 Method for measuring position of fire detector and device for same
KR101242424B1 (en) 2012-10-05 2013-03-12 박난병 P-address type automatic fire detection system for each sensor applied specific resistance

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080079911A (en) * 2007-02-28 2008-09-02 김현우 Fire transmitter dispatching position identification unit
KR100862538B1 (en) * 2008-06-10 2008-10-09 김종훈 Integrated supervisory monitoring system of fire receiver
KR20120046866A (en) * 2010-10-29 2012-05-11 주식회사 케이티 Method for measuring position of fire detector and device for same
KR101242424B1 (en) 2012-10-05 2013-03-12 박난병 P-address type automatic fire detection system for each sensor applied specific resistance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102076768B1 (en) * 2019-10-10 2020-02-12 (주)그랜드아이테크놀러지 Automatic fire extinguishing system to detect disconnection of gas detector and gas shutoff line
CN113671590A (en) * 2021-07-01 2021-11-19 浙江大华技术股份有限公司 Infrared sensor and infrared sensing system
CN113671590B (en) * 2021-07-01 2024-03-26 浙江大华技术股份有限公司 Infrared sensor and infrared sensing system

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