WO2018097405A1 - Dispositif de détection d'incendie de type adresse utilisant une source de courant commandée en tension commandée par une unité de conversion numérique-analogique, et système de détection d'incendie le comprenant - Google Patents

Dispositif de détection d'incendie de type adresse utilisant une source de courant commandée en tension commandée par une unité de conversion numérique-analogique, et système de détection d'incendie le comprenant Download PDF

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Publication number
WO2018097405A1
WO2018097405A1 PCT/KR2017/001957 KR2017001957W WO2018097405A1 WO 2018097405 A1 WO2018097405 A1 WO 2018097405A1 KR 2017001957 W KR2017001957 W KR 2017001957W WO 2018097405 A1 WO2018097405 A1 WO 2018097405A1
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WO
WIPO (PCT)
Prior art keywords
fire detection
address
voltage
constant current
address code
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PCT/KR2017/001957
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English (en)
Korean (ko)
Inventor
채석
신수용
이말숙
Original Assignee
금오공과대학교 산학협력단
(주)탑이엔씨건축사사무소
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Publication of WO2018097405A1 publication Critical patent/WO2018097405A1/fr

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values
    • 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

Definitions

  • the present invention relates to a fire detection device, and more particularly, to a fire detection system including the address type fire detection device using a voltage controlled current source.
  • the fire detectors include heat detectors and temperature detectors.
  • the addressable automatic fire detection systems developed so far include the use of resistance addressable fire detectors and the use of microcomputer addressable fire detectors. have.
  • FIG. 1 is a block diagram of a conventional resistance-type address fire detection system
  • Figure 2 is a block diagram of a conventional fire detection unit.
  • the existing 'resistance address type fire detection system' is composed of a receiver and a plurality of fire detection unit.
  • the receiver consists of a current-sense resistor, a microcomputer with an analog-to-digital converter (ADC), and a display module.
  • ADC analog-to-digital converter
  • each fire detection unit includes an address setting unit and a fire detection unit
  • the address setting unit includes five address setting switches and five resistors from R1 to R5 connected to each switch. .
  • the advantage is that construction cost is low because only + 24V power line is used instead of communication line.
  • the disadvantage is that it is difficult to adjust the current flowing to the detector proportionally by the operation of the address setting switch. Value of current sense resistor If the equivalent resistance value of the address setting unit is R, the current detection resistance when the fire detector is Current flowing in to be. Change the R value by operating five switch for address setting It is difficult to multiply by. Therefore, this method has difficulty in construction.
  • FIG. 3 is a block diagram of an address type fire detection system using a conventional microcomputer.
  • the conventional "address type fire detection system using a microcomputer” includes a receiver and a plurality of fire detection units.
  • the receiver consists of an input module, a microcomputer, and a display module.
  • the fire detector consists of a fire detector, a microcomputer, and an address setter.
  • the operation principle of the conventional 'address type fire detection system using a microcomputer' is as follows.
  • the microcomputer of the fire detector sends the address of the fire detector operated through the communication line to the microcomputer of the receiver, so that the address of the fire detector operated can be known.
  • the present invention has been proposed to solve the above technical problem, by using a voltage-controlled current source controlled by a digital analog converter, address type fire detection that can operate using only the power line without additional communication line An apparatus and a fire detection system including the same are provided.
  • the address setting unit for generating an address code value corresponding to the electrical connection state of each of the plurality of switches;
  • a digital analog converter for generating a reference voltage having a voltage level corresponding to the address code value;
  • a constant current source circuit unit for driving a fire detection constant current having a current value corresponding to the voltage level of the reference voltage to a power line when the fire detection sensor is activated, according to the control of the reference voltage.
  • the constant current source circuit unit may include at least one NMOS transistor under control of the reference voltage, and is configured as a suction sink circuit driving the fire detection constant current to the power line. .
  • the constant current source circuit unit may include at least one PMOS transistor under the control of the reference voltage, and is configured as a discharge current circuit driving the fire detection constant current to the power line. .
  • the digital analog converter may include: a digital analog converter which receives the address code value and generates an output voltage having a voltage level corresponding to the address code value; And an amplifier amplifying the output voltage and outputting the output voltage as the reference voltage.
  • the digital-to-analog converter may include a microcontroller configured to receive the address code values in parallel and generate the reference voltage having a voltage level corresponding to the address code values.
  • the digital analog converter may include: a microcontroller configured to receive the address code value and generate a PWM output voltage having a pulse width corresponding to the address code value; And a low pass filter receiving the PWM output voltage and removing the ripple signal and outputting the ripple signal as the reference voltage.
  • a plurality of address type fire detection devices each driving a fire detection constant current having a current value corresponding to the plurality of address type fire detection devices; And a fire receiver configured to determine whether the at least one address type fire detection device is operated among the plurality of address type fire detection devices based on a current value flowing through the power line, and to display a location of the fire. This is provided.
  • the constant current source circuit unit may include at least one NMOS transistor under the control of the reference voltage, and is configured as a suction sink circuit driving the fire detection constant current as a line connected in parallel with the power line. It is characterized by.
  • the constant current source circuit unit may include at least one PMOS transistor under the control of the reference voltage, and is configured as a discharge current circuit driving the fire detection constant current as a line connected in parallel with the power line. It is characterized by.
  • the digital analog converter may include: a digital analog converter which receives the address code value and generates an output voltage having a voltage level corresponding to the address code value; And an amplifier amplifying the output voltage and outputting the output voltage as the reference voltage.
  • the digital-to-analog converter may include a microcontroller configured to receive the address code values in parallel and generate the reference voltage having a voltage level corresponding to the address code values.
  • the digital analog converter may include: a microcontroller configured to receive the address code value and generate a PWM output voltage having a pulse width corresponding to the address code value; And a low pass filter receiving the PWM output voltage and removing the ripple signal and outputting the ripple signal as the reference voltage.
  • FIG. 1 is a block diagram of a conventional resistance use address type fire detection system.
  • FIG. 2 is a block diagram of a conventional fire detection unit.
  • Figure 3 is an address type fire detection system using a conventional micom.
  • FIG. 6 is a configuration diagram according to another embodiment of the digital-to-analog converter.
  • FIG. 7 is a configuration diagram according to another embodiment of the digital-to-analog converter.
  • FIG. 8 is a configuration diagram according to another embodiment of the constant current source circuit portion.
  • FIG. 4 is a block diagram of a fire detection system 1 according to an embodiment of the present invention.
  • the fire detection system 1 includes a plurality of address type fire detection devices 100 and a fire receiver 200.
  • the plurality of address type fire detection apparatuses 100 are disposed at different places, respectively, and are configured to detect whether a fire is disposed at a place.
  • each address type fire detection device can be identified by setting the address code values.
  • the plurality of address type fire detection apparatuses 100 are set to different address code values according to the place where they are arranged, and are configured to be connected in parallel to the power line.
  • the plurality of address type fire detection apparatuses 100 respectively drive a fire detection constant current having a current value corresponding to its own address code value when the fire detection sensor assigned thereto is activated.
  • the first address type fire detection device 100-1 When the fire detection sensor of the first address type fire detection device 100-1 becomes active-fire detection state, the first address type fire detection device 100-1 receives a current value corresponding to its own address code value. The first fire detection constant current I1 is driven.
  • the current value of the first fire detection constant current I1 and the current value of the second fire detection constant current I2 are determined by the address code value set in its own address setting section.
  • the fire detection constant current is driven by the constant current source circuit unit, it is possible to easily design such that the current value of the first fire detection constant current I1 and the current value of the second fire detection constant current I2 become integer multiples.
  • the fire receiver 200 determines whether at least one address type fire detection device of the plurality of address type fire detection devices 100 is operated-whether or not the fire is detected-based on the current value flowing through the power line, and then determines the place where the fire occurred. It is configured to be displayed.
  • the fire detection sensors of the plurality of address type fire detection devices 100 when all of the fire detection sensors of the plurality of address type fire detection devices 100 are not active, it is defined as a state where no fire occurs in every place. At this time, since all the plurality of address type fire detection devices 100 do not drive the fire detection constant current, the basic current I normal due to the termination resistor R normal flows through the power line.
  • the fire detection sensor of the first address type fire detection device (100-1) is active-fire detection state-the current value corresponding to the address code value of the first address type fire detection device (100-1) When driving the first fire detection constant current (I1) having a
  • the total current value I flowing through the power line is determined by the basic current I normal and the first fire detection constant current I1. It is defined as the sum.
  • the fire receiver 200 detects the total current value I flowing through the power line, and determines that the first address type fire detection device 100 is active-a fire detection state, and the first address type fire detection device 100. -1) indicates that a fire has occurred in the area where the location is located through the display module.
  • the fire detection sensor of the first address type fire detection device (100-1) is active-fire detection state-the current value corresponding to the address code value of the first address type fire detection device (100-1) Drive the first fire detection constant current (I1) having:
  • the fire detection sensor of the second address type fire detection device 100-2 becomes active-the fire detection state-so that the second address type fire detection device 100-2 has a current value corresponding to its own address code value.
  • I2 the second fire detection constant current
  • the total current value I flowing through the power supply line is determined by the basic current ( I normal ), the first fire detection constant current I1 and the second fire detection constant current I2 are defined as the sum.
  • the fire receiver 200 detects the total current value I flowing through the power line and determines that the first and second address type fire detection devices 100-1 and 100-2 are active-fire detection state.
  • the display module indicates that a fire has occurred in a region where the first and second address type fire detection devices 100-1 and 100-2 are located.
  • the fire receiver 200 determines the total current value I flowing through the power line. By detecting, it is possible to determine whether at least one or more address type fire detection devices of the plurality of address type fire detection devices 100 operate.
  • the fire receiver 200 includes a current detector, an MCU having an analog to digital converter (ADC), and a display module.
  • ADC analog to digital converter
  • each 'address type fire detection device' is an address setting unit, D / A conversion unit, a fire detection sensor, and a constant current source It consists of a circuit part.
  • the address setting part of 'address type fire detection device' sets the address in binary form
  • the D / A converting part converts the address set in binary form into analog voltage and outputs it
  • the constant current source circuit part detects fire
  • the current controlled by the output voltage of the D / A change part flows to the + 24V power line.
  • the current detector in the fire receiver 200 is a current flowing through the + 24V power line. Resistance Detects through and amplifies with amplifier. 'MCU' receives the output voltage of the amplifier through Analog to Digital Coverter (ADC) to find out whether it is in a normal state and the address (ie fire location) of the address type fire detection device that operated and displays the result Module '.
  • the display module is a device that displays the information received from the microcomputer, that is, whether it is in a normal state and the location of the fire.
  • Size is the address value set in the address setting section of 'Address type fire detection device'. The size is determined according to.
  • the current detector of the fire receiver 200 current flowing through the + 24V power line Resistance Voltage And amplify K times with an amplifier.
  • Microcomputer (MCU) is amplified by ADC
  • the voltage is converted into a digital signal, and the CPU receives the converted result and processes the program to find out whether it is in a normal state and the address of the address type fire detection device (that is, the location of the fire).
  • the display module shows the status of normal status and the location of fire.
  • the detection method of fire occurrence address is that the + 24V power line It is a method to find out the address i of the address type fire detection device operated by letting more current flow, so the installation cost is lower than the method using both the communication line and the + 24V power line.
  • FIG. 5 is a configuration diagram of an address type fire detection apparatus 100-1 using a voltage controlled current source included in the fire detection system 1.
  • the address type fire detection apparatus 100-1 includes only a brief configuration for clearly describing the technical idea to be proposed.
  • the address type fire detection apparatus 100-1 includes an address setting unit 110, a digital analog conversion unit 120, and a constant current source circuit unit 130.
  • the address setting unit 110 generates an address code value corresponding to the electrical connection state of each of the plurality of switches. Since eight switches are provided in this embodiment, the (digital) address code values can be set by a combination of turn on and turn off of each switch.
  • the digital analog converter 120 generates a reference voltage VREF having a voltage level corresponding to the address code value.
  • the digital-to-analog converter 120 includes a digital-to-analog converter 121 and an amplifier 122.
  • the digital-to-analog converter 121 receives an address code value and generates an output voltage VO having a voltage level corresponding to the address code value. That is, the voltage level of the output voltage VO output from the digital-to-analog converter 121 is determined by the address code value, which is a digital code value, and the amplifier 122 amplifies the output voltage VO by a predetermined gain. It outputs as the reference voltage VREF.
  • the digital analog converter 120 may not be provided with an amplifier 122 and may be configured to use the output voltage VO output from the digital analog converter 121 as a reference voltage VREF. .
  • the constant current source circuit unit 130 when the fire detection sensor 140 is active, the fire detection constant current (I1) having a current value corresponding to the voltage level of the reference voltage (VREF) under the control of the reference voltage (VREF). Drive to a line connected in parallel with the power line.
  • the constant current source circuit unit 130 includes at least one NMOS transistor under the control of the reference voltage VREF, and a current sink circuit driving the fire detection constant current I1 as a line connected in parallel with the power line. It can be configured as.
  • the comparison unit 131 compares the feedback voltage by the fire detection constant current I1 and the resistance R with the reference voltage VREF, and configures the current driver 132 to output the voltage output by the comparison result. Transfer to the gate stage of the NMOS transistor.
  • the current driver 132 drives the fire detection constant current I1 corresponding to the voltage level of the reference voltage VREF when the switching element SCR is turned on.
  • the switching element SCR Is composed of Silicon Controlled Rectifier (SCR).
  • SCR Silicon Controlled Rectifier
  • the operation principle of the address type fire detection apparatus 100-1 is as follows.
  • the address set by the address setting unit 110 may be treated as an address of a fire detection sensor and may also be treated as an address of an 'address type fire detection device 100-1'.
  • the constant current source circuit unit 130 is configured as a suction type current sink using an npn type transistor, but as shown in FIG. It can also be implemented as a discharge type current source. In this case I i to be.
  • FIG. 6 is a configuration diagram according to another embodiment of the digital-to-analog converter 120A.
  • the digital analog converter 120A includes a microcontroller 121A and an amplifier 122A.
  • the digital-analog converter 120A receives an address code value in parallel and generates a reference voltage VREF having a voltage level corresponding to the address code value.
  • the microcontroller 121A receives an address code value through a parallel port and generates an output voltage VO having a voltage level corresponding to the address code value. That is, the voltage level of the output voltage VO output from the microcontroller 121A is determined by the address code value, which is a digital code value, and the amplifier 122A amplifies the output voltage VO by a preset gain to reference it. Output as voltage VREF.
  • the digital analog converter 120A may not be provided with the amplifier 122A, and may be configured to use the output voltage VO output from the microcontroller 121A as the reference voltage VREF.
  • FIG. 7 is a configuration diagram according to another embodiment of the digital-to-analog converter 120B.
  • the digital-to-analog converter 120B includes a microcontroller 121B and a low pass filter 122B.
  • the digital-to-analog converter 120B receives the address code value in parallel and generates a reference voltage VREF having a voltage level corresponding to the address code value.
  • the microcontroller 121B generates the address code value through the parallel port.
  • PWM Pulse Width Modulation
  • the low pass filter 122B receives the PWM output voltage PWM and removes the ripple signal and outputs the ripple signal as the reference voltage VREF.
  • the pulse width of the PWM output voltage PWM output from the microcontroller 121B is determined by the address code value which is a digital code value, and the low pass filter 122B removes the ripple of the PWM output voltage PWM. After that, it is output as the reference voltage VREF.
  • the constant current source circuit unit 130A detects a fire having a current value corresponding to the voltage level of the reference voltage VREF under the control of the reference voltage VREF when the fire detection sensor 140 is activated.
  • the constant current I1 is driven by a line connected in parallel with the power line.
  • the constant current source circuit unit 130A includes at least one PMOS transistor under the control of the reference voltage VREF, and discharge current current circuit driving the fire detection constant current I1 in a line connected in parallel with the power line. It can be configured as.
  • the constant current source circuit unit 130A includes a comparator 131A, a current driver 132A, and a switching element SCR.
  • the comparison unit 131A compares the feedback voltage by the fire detection constant current I1 and the resistor R with the reference voltage VREF, and configures the current driver 132A to output the voltage output by the comparison result. Transfer to the gate of the PMOS transistor.
  • the current driver 132A drives the fire detection constant current I1 corresponding to the voltage level of the reference voltage VREF when the switching element SCR is turned on.
  • the switching element SCR Is composed of Silicon Controlled Rectifier (SCR).
  • SCR Silicon Controlled Rectifier
  • TURN ON the fire detection signal transmitted from the fire detection sensor (140). Therefore, when SCR (Silicon Controlled Rectifier) is turned on-when a fire is detected-the current driver 132A drives the fire detection constant current (I1) to the line.

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  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

La présente invention concerne un dispositif de détection d'incendie de type adresse utilisant une source de courant commandée en tension commandée par une unité de conversion numérique-analogique comprenant : une unité de définition d'adresse pour générer une valeur de code d'adresse correspondant à un état de connexion électrique de chacun d'une pluralité de commutateurs; une unité de conversion numérique-analogique pour générer une tension de référence ayant un niveau de tension correspondant à la valeur de code d'adresse; et une unité de circuit de source de courant constant pour entraîner, par une ligne d'alimentation, un courant constant de détection d'incendie dont la valeur de courant correspondant à un niveau de tension de la tension de référence en fonction de la commande de la tension de référence, lorsqu'un capteur de détection d'incendie est activé.
PCT/KR2017/001957 2016-11-28 2017-02-22 Dispositif de détection d'incendie de type adresse utilisant une source de courant commandée en tension commandée par une unité de conversion numérique-analogique, et système de détection d'incendie le comprenant WO2018097405A1 (fr)

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KR1020160159384A KR101811402B1 (ko) 2016-11-28 2016-11-28 디지털 아날로그 변환부로 제어되는 전압제어 전류원을 이용한 주소형 화재감지장치 및 이를 포함하는 화재탐지 시스템
KR10-2016-0159384 2016-11-28

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CN111866215A (zh) * 2020-07-31 2020-10-30 珠海市迈卡威超声波技术有限公司 一种电压信号输出方法及装置

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KR102139807B1 (ko) * 2018-04-26 2020-07-30 금오공과대학교 산학협력단 전압제어 전류원을 이용한 주소형 화재감지장치 및 이를 포함하는 화재탐지 시스템
KR102082320B1 (ko) 2018-08-16 2020-02-27 금오공과대학교 산학협력단 전류를 이용한 주소형 화재 감지장치
KR102361499B1 (ko) 2020-05-08 2022-02-09 금오공과대학교 산학협력단 교류전류의 진폭 스펙트럼을 이용한 주소형 화재감지기 및 이를 포함하는 화재감지시스템
KR102361512B1 (ko) 2020-06-01 2022-02-09 금오공과대학교 산학협력단 복수의 주파수 성분을 갖는 교류전류를 생성하는 주소형 화재감지기 및 이를 포함하는 화재감지시스템
KR20230172883A (ko) 2022-06-16 2023-12-26 금오공과대학교 산학협력단 교류신호 기반 화재 감지 시스템의 자동 주소 할당방법

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