CN109816916A - Fire display panel circuit - Google Patents
Fire display panel circuit Download PDFInfo
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- CN109816916A CN109816916A CN201910214471.5A CN201910214471A CN109816916A CN 109816916 A CN109816916 A CN 109816916A CN 201910214471 A CN201910214471 A CN 201910214471A CN 109816916 A CN109816916 A CN 109816916A
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Abstract
The present invention relates to fire control field of circuit technology, it is intended to provide fire display panel circuit, its key points of the technical solution are that including the second power supply module and converting unit, the converting unit is for converting analog signals into digital signal and exporting, second power supply module is used to provide operating voltage and reference voltage for the converting unit, the input terminal of the converting unit is connected with the acquisition module of the analog signal for acquiring scene of fire, the output end of the converting unit is connected with the control module for regulating and controlling fire display panel, the control module is connected with the display panel module of the address read module for reading fire point coded address and the real-time data situations for showing scene of fire.The present invention is suitable for the information received and real-time display alarm controller transmits.
Description
Technical field
The present invention relates to fire control field of circuit technology, more specifically, it relates to fire display panel circuit.
Background technique
Fire display panel is mounted in the fire alarm display device in floor or independent fire district, itself is not connected to any
The linkages such as detector and module, monitoring and fire alarm for showing This floor or each detector of this fire compartment are warned feelings
Condition, and have auditory tone cues or alarm.It is connected by bus with fire alarm control unit, handles and display controller transmitted
The data come.
Specific work process is: when fire occurs, the fire alarm control unit of fire protection control center generates alarm, while handle
Alarm signal is transferred on the fire display panel in the area that catches fire, and display panel shows the detector number and relevant information of alarm
Come, be simultaneously emitted by alarm signal, to notify area personnel of catching fire.
Fire display panel apply in general to hotel, restaurant, office building, teaching building, computer room, communication machine room, bank,
Warehouse, library, archive office and other fire-prones place, intuitive and convenient can show the detailed description of alarm point,
But there are delay display data in existing fire display panel, be unfavorable for duty personnel and quickly confirm fire dangerous situation simultaneously
Take fire protection.
Summary of the invention
The object of the present invention is to provide fire display panel circuit, receive what simultaneously real-time display alarm controller transmitted
Information is conducive to duty personnel more to show real-time condition that This floor or each detector of this fire compartment and fire alarm are warned in time
Fire dangerous situation is confirmed fastly and takes fire protection.
Above-mentioned technical purpose of the invention has the technical scheme that fire display panel circuit, including
Second power supply module and converting unit, the converting unit is for converting analog signals into digital signal and export, and described the
Two power supply modules are used to provide operating voltage and reference voltage for the converting unit, and the input terminal of the converting unit is connected with
For acquiring the acquisition module of the analog signal of scene of fire, the output end of the converting unit is connected with aobvious for regulating and controlling fire
Show the control module of disk, the control module is connected with address read module for reading fire point coded address and for showing
Show the display panel module of the real-time data situations of scene of fire.
By using above-mentioned technical proposal, the second power supply module provides operating voltage and reference voltage for converting unit, makes
Converting unit is in running order；When fire occurs, the analog signal input conversion that acquisition module acquires scene of fire is single
In member, converting unit receives input signal and to control module input feedback signal, after control module receives feedback signal, ground
Location read module is read inside fire point coded address and input control module, and control module is by the real time data feelings of scene of fire
Condition input panel inside modules simultaneously show on the screen of display panel module, and then fire display panel circuit receives and real
When show information that alarm controller transmits, to show that This floor or each detector of this fire compartment and fire alarm are warned in time
Real-time condition, fire dangerous situation is preferably confirmed conducive to duty personnel and takes fire protection.
Preferably, the control module is single-chip microcontroller LPC1752, and the control module, which is connected with, is used for transmission scene of fire
Real-time data situations communication module and the internal data for storing single-chip microcontroller LPC1752 memory module.
By using above-mentioned technical proposal, single-chip microcontroller LPC1752 is for the highly integrated insertion with low-power consumption of processing requirement
Formula application, operating frequency have 3 level production lines and Harvard structure up to 100MHz, and peripheral component includes up to 512KB
Flash memory, the data storage of 64KB, orthogonal encoder interface and up to 70 general purpose I/O pipe etc., function is strong
Greatly, control is simple, meets the performance requirement of fire acousto-optic alarm, conducive to the design for simplifying report device circuit.
Preferably, the control module is also connected with the light emitting module for generating visual alarm in fire.
By using above-mentioned technical proposal, control module controls light emitting module movement, makes light emitting module generation in fire
Visual alarm plays a warning role staff, preferably finds fire dangerous situation conducive to duty personnel.
Preferably, the control module is connected with for providing the first power supply module of operating voltage for it.
By using above-mentioned technical proposal, the first power supply module provides operating voltage for control module, enables control module
It is enough to work normally, and then it is conducive to the normal work of fire display panel circuit.
Preferably, first power supply module is connected with the acoustic element for issuing acoustic alarm signal, the sound member
One end of part is passed through for driving the driving part of the acoustic element work to connect with the control module.
By using above-mentioned technical proposal, control module controls acoustic element work, makes acoustic element generation in fire
Acoustic alarm signal plays a warning role staff, preferably finds fire dangerous situation conducive to duty personnel, meanwhile, driving portion
Part drives acoustic element work, avoids the occurrence of too low the case where acoustic element can not being driven the to work appearance of power of control module.
Preferably, first power supply module is connected with the acoustic alarm signal issued for eliminating the acoustic element manually
Noise reduction key module.
By using above-mentioned technical proposal, noise reduction key module for eliminating the acoustic alarm letter that acoustic element issues manually
Number, acoustic element sounding, flexible operation mode are controlled using various ways.
Preferably, the output end of the converting unit passes through coupling element and the institute for electrical isolation input terminal and output end
State control module connection.
By using above-mentioned technical proposal, coupling element plays the role of electrical isolation to converting unit and control module,
Strong antijamming capability, the operation is stable is contactless, long service life, and efficiency of transmission is high, plays a protective role to control module.
Preferably, first power supply module includes the linear voltage-stablizer U2 of rectifier bridge DR1, voltage stabilizing chip U1 and three, institute
The cathode output end for stating rectifier bridge DR1 is connect with the input terminal of the voltage stabilizing chip U1, the output end of the voltage stabilizing chip U1 with
The input terminal of the three linear voltage-stablizer U2 connects, and the output end of the three linear voltage-stablizer U2 and the control module connect
It connects, the output end of the voltage stabilizing chip U1 is connect with the acoustic element, the output end of the three linear voltage-stablizer U2 and institute
State the connection of noise reduction key module.
By using above-mentioned technical proposal, 24V alternating current is converted to direct current by rectifier bridge DR1, and step by step through pressure stabilizing core
The linear voltage-stablizer U2 output stable DC electricity of piece U1 and three, to be provided for control module, acoustic element and noise reduction key module
Suitable operating voltage, the first power supply module can export stable DC, and strong antijamming capability is conducive to entire fire display panel
The normal work of circuit.
Preferably, the cathode output end of the rectifier bridge DR1 is grounded through oppositely arranged Transient Suppression Diode, described whole
The cathode output end of stream bridge DR1 is connect through capacitor C1 with the cathode of the Transient Suppression Diode.
By using above-mentioned technical proposal, Transient Suppression Diode plays filter action to the output voltage of rectifier bridge DR1,
With by the voltage clamping at Transient Suppression Diode both ends one it is scheduled numerically export again, be effectively protected subsequent circuit
For element not by the destruction of high voltage transient spike, the voltage regulation result of the first power supply module is more preferable.
Preferably, the cathode output end of the rectifier bridge DR1 is grounded through the electrolytic capacitor of forward direction setting, the electrolytic capacitor
Anode connect with the input terminal of the voltage stabilizing chip U1.
By using above-mentioned technical proposal, electrolytic capacitor plays filter action, rectifier bridge to the output voltage of rectifier bridge DR1
The output voltage of DR1 is handled again, so that the output voltage of the first power supply module more meets the requirements.
In conclusion the invention has the following advantages:
Second power supply module provides operating voltage and reference voltage for converting unit, keeps converting unit in running order, and first
Power supply module provides operating voltage for control module, keeps control module in running order.
When fire occurs, in the analog signal input converting unit that acquisition module acquires scene of fire, converting unit
Input signal and coupled element are received to control module input feedback signal.
After control module receives feedback signal, address read module reads fire point coded address and input control module
Inside, control module is by the real-time data situations input panel inside modules of scene of fire and on the screen of display panel module
It shows.
Meanwhile control module controls light emitting module and sound element manipulation, and light emitting module is made to generate visual alarm, the sound
Element generates acoustic alarm signal.
The acoustic alarm signal of acoustic element sending can be eliminated manually by noise reduction key module.
And then the information that fire display panel circuit receives and real-time display alarm controller transmits, to show this in time
The real-time condition that floor or each detector of this fire compartment and fire alarm are warned is conducive to duty personnel and preferably confirms fire dangerous situation simultaneously
Take fire protection.
Detailed description of the invention
Fig. 1 is the circuit connection diagram of buzzer S1 and the first power supply module；
Fig. 2 is the circuit connection diagram of the second power supply module, converting unit, acquisition module, communication module and memory module；
Fig. 3 is that the circuit connection of address read module, display panel module, light emitting module, noise reduction key module and control module is shown
It is intended to；
Fig. 4 is the pin function schematic diagram of control module.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
It referring to Fig.1, is fire display panel circuit disclosed by the invention, including the confession for converting alternating current to direct current
Electric module, power supply module include rectifier bridge DR1, the model MB10F of rectifier bridge DR1, rectifier bridge DR1 there are two input terminal, just
One of input terminal of pole output end and cathode output end, rectifier bridge DR1 is connect through fuse F1 with bus 24V-, rectifier bridge
The cathode output end of DR1 is grounded through oppositely arranged diode TV1, and the cathode output end of rectifier bridge DR1 is through capacitor C1 and two poles
Pipe TV1 connection, the cathode output end ground connection of rectifier bridge DR1.
Diode TV1 be Transient Suppression Diode and its model SMAJ36A, have high current ducting capacity, its two
When pole is by reversed transient state high energy impact events, the high impedance of its two interpolar is become by Low ESR with flank speed, to absorb one
Instantaneous large-current, the voltage clamping at the both ends diode TV1 one it is scheduled numerically, to be effectively protected subsequent circuit
Element is not by the destruction of high voltage transient spike.
Fuse F1 is resistance value and lower-powered resistance, if circuit has short trouble, by blowout F1, to rise
The purpose that other elements will not be damaged on to protection circuit.
The cathode output end of rectifier bridge DR1 is connected with voltage stabilizing chip U1, the model of voltage stabilizing chip U1 through resistance R1
MC34063, the controllable oscillator of pedestal generator, comparator with temperature self-compensation function, duty ratio, R-S touching
Device and High-current output switching circuit etc. are sent out, cheap, the one end of resistance R1 far from voltage stabilizing chip U1 is grounded through capacitor C2, electricity
Appearance C2 is electrolytic capacitor, and the anode of capacitor C2 is connect with resistance R1 far from one end of voltage stabilizing chip U1.
Voltage stabilizing chip U1 shares C1 pin, IS pin, IN pin, REF pin, C2 pin, E2 pin, CAP pin, GND
Totally 8 pins, the anode of IS pin, C1 pin and the C2 pin of resistance R1 connection voltage stabilizing chip U1, rectifier bridge DR1 export pin
End is connect with the IN pin of voltage stabilizing chip U1, and the E2 pin of voltage stabilizing chip U1 is connected with 5V power supply, voltage stabilizing chip U1 through inductance L1
E2 pin be grounded through oppositely arranged diode D1, the REF pin of voltage stabilizing chip U1 is grounded through resistance R2, voltage stabilizing chip U1's
One end of E2 pin of the REF pin through resistance R3 connection inductance L1 far from voltage stabilizing chip U1, the CAP pin of voltage stabilizing chip U1 is through electricity
Hold C3 ground connection, the GND pin ground connection of voltage stabilizing chip U1.
One end of E2 pin of the inductance L1 far from voltage stabilizing chip U1 is connected with three linear voltage-stablizer U2, three linear pressure stabilizings
The model SPX1117M3 of device U2, three linear voltage-stablizer U2 share Vin pin, Vout pin and adj/com pin three draw
One end of foot, E2 pin of the Vin pin of three linear voltage-stablizer U2 with inductance L1 far from voltage stabilizing chip U1 is connect, and three is linear
The Vin of voltage-stablizer U2 draws foot meridian capacitor C4 ground connection, the adj/com pin ground connection of three linear voltage-stablizer U2, three linear pressure stabilizings
The Vout of device U2 draws foot meridian capacitor C5, capacitor C6 and capacitor C7 ground connection, and capacitor C5 is electrolytic capacitor, anode and three ends of capacitor C5
The Vout pin of linear voltage regulator U2 connects, and the Vout pin of three linear voltage-stablizer U2 connects 3.3V power supply and connects through capacitor C8
Ground, connects 3.3V power supply between capacitor C6 and capacitor C7, the Vin pin of three linear voltage-stablizer U2 is connected with buzzer S1, bee
Ring device S1 is acoustic element, with for issuing acoustic alarm signal, buzzer S1 has both ends and is respectively connected to the two-port of socket S2
Interior, the model 2CON_1 of socket S2, one end of buzzer S1 is connect with the Vin pin of three linear voltage-stablizer U2, the other end
It is connected with triode Q1, triode Q1 is driving part, for driving buzzer S1 work, the collector of triode Q1 and bee
The port connection of ring device S1, the emitter ground connection of triode Q1, the base stage of triode Q1 are connected with resistance R4.
Rectifier bridge DR1, voltage stabilizing chip U1, three linear voltage-stablizer U2 form the first power supply module, by 24- to 24+'s
Alternating current is converted to 5V operating voltage and the output of 3.3V operating voltage, and wherein 5V operating voltage is buzzer S1 power supply, 3.3V work
Making voltage is that control module and noise reduction key module are powered.
Two input terminals of rectifier bridge DR1 are separately connected the plug-in unit JP1 and plug-in unit JP2 for being provided with alternating current, plug-in unit JP1 and
The model of plug-in unit JP2 is that 4CON_1, plug-in unit JP1 and plug-in unit JP2 have 4 ports and be correspondingly connected between each other, fuse
F1 is connect with the port 24V- of plug-in unit JP2, and an input terminal of rectifier bridge DR1 is connect with the port 24V+ of plug-in unit JP2, plug-in unit
3 ports and 4 ports of JP2 are connected with rectifier bridge DR2, two input terminals of rectifier bridge DR2 respectively with 3 ports of plug-in unit JP2 and 4
Port connection, the end 24V+ of plug-in unit JP2 are connect through diode TV2 with one of input terminal of rectifier bridge DR2, rectifier bridge DR2
Cathode output end ground connection, the cathode output end of rectifier bridge DR2 is grounded through diode TV3.
Diode TV2 be Transient Suppression Diode and its model P6KE36CA, have high current ducting capacity, its two
When pole is by reversed transient state high energy impact events, subsequent circuit element is protected to efficiency not broken by high voltage transient spike
It is bad.
Diode TV3 be Transient Suppression Diode and its model SMAJ36A, have high current ducting capacity, its two
When pole is by reversed transient state high energy impact events, subsequent circuit element is protected to efficiency not broken by high voltage transient spike
It is bad.
Referring to Figures 1 and 2, the cathode output end of rectifier bridge DR2 is connected with resistance R5 and triode Q2 through diode D2, and two
Pole pipe D2 is grounded through capacitor C9, and capacitor C9 and resistance R5 are parallel with capacitor C10 and capacitor C11, capacitor C10 and capacitor at both ends
C11 is in parallel, and capacitor C10 is electrolytic capacitor, and the anode of capacitor C10 is connect with resistance R5, the collector and resistance R5 of triode Q2
Connection, the base stage of triode Q2 are grounded through diode W1, and diode W1 is zener diode and its model 5V6, triode Q2
Base stage and triode Q2 collector between be connected with resistance R6, the emitting stage of triode Q2 is connected with capacitor C12 and capacitor
C13, capacitor C12 and capacitor C13 are arranged in parallel and one end is connect with the emitting stage of triode Q2, and the other end connects diode W1.
Plug-in unit JP1, plug-in unit JP2, rectifier bridge DR2, resistance R5 and triode Q2 form the second power supply module, by L- to L+
Alternating current be converted to 5V direct current electricity output.
One end of E2 pin of the inductance L1 far from voltage stabilizing chip U1 is grounded through capacitor C14, and capacitor C14 is electrolytic capacitor, electricity
The one end for holding E2 pin of the anode of C14 with inductance L1 far from voltage stabilizing chip U1 is connect, and capacitor C14 is through two pole of capacitor C15 connection
One end of base stage of the pipe W1 far from triode Q2.
The cathode output end of rectifier bridge DR2 is grounded through resistance R7 and resistance R8, and the both ends of resistance R8 are parallel with capacitor C16,
The cathode output end of rectifier bridge DR2 is grounded through triode Q3 and resistance R9, and resistance R9 is connect with the emitting stage of triode Q3, three poles
The current collection grade of pipe Q3 is connect with the cathode output end of rectifier bridge DR2, and the base stage of triode Q3 is grounded through capacitor C17.
Microcontroller U3 is connected between resistance R7 and resistance R8, microcontroller U3 is 8 feet of model PIC12F675-I
8 dual-in-line PIC series monolithics, microcontroller U3 share VDD pin, VSS pin, GP0 pin, GP1 pin, GP2
8 pin, GP3 pin, GP4 pin and GP5 pin pins, the GP1 pin of microcontroller U3 are connected to resistance R7 through resistance R10
Between resistance R8, the GP0 pin of microcontroller U3 is connected between the base stage of triode Q3 and capacitor C17 through resistance R11, micro-
The GP2 pin of controller U3 is connected between the base stage of triode Q3 and capacitor C17 through resistance R12, and the VSS of microcontroller U3 draws
The VDD pin of foot ground connection, microcontroller U3 connects 5V power supply, and 5V power supply is grounded through capacitor C18.
5V power supply is connected with plug-in unit JP3 through resistance R13, and the model CON6 of plug-in unit JP3, plug-in unit JP3 have 6 ports, electricity
Resistance R13 is connect with 2 ports of plug-in unit JP3, and 1 port of plug-in unit JP3 is connect with the VDD pin of microcontroller U3, microcontroller U3
GP3 pin connect with 2 ports of plug-in unit JP3,6 ports of plug-in unit JP3 ground connection.
Plug-in unit JP3 is acquisition module, with the real time data for acquiring scene of fire and input control module.
Microcontroller U3 is converting unit, and plug-in unit JP3 collected analog signal MCLR, ISPCLK and PL1 are converted
For in digital signal and input control module.
3.3V power supply is connected with microcontroller U4, the model SST25VF064C of microcontroller U4, micro-control through resistance R14
Device U4 processed is shared/and CE pin, SO pin ,/WP pin, VSS pin, VDD pin ,/RS pin, SCK pin and SI pin 8 draw
Foot, microcontroller U4 /CE pin connects resistance R14, microcontroller U4 /WP pin is connected with resistance R15, microcontroller U4
VSS pin ground connection, the VDD pin of microcontroller U4 and/RS pin connect 3.3V power supply, and the VDD pin of microcontroller U4 passes through
Capacitor C19 ground connection
3.3V power supply is also connected with memory U5, the model 24LC16B of memory U5, is a 16K electric erasables
PROM, memory U5 share A0 pin, A1 pin, A2 pin, GND pin, Vcc pin, WP pin, SCL pin and SDA pin
8 pins, the Vcc pin of memory U5 connect 3.3V power supply, the WP pin of memory U5 through resistance R16 connection 3.3V power supply,
The A0 of memory U5 draws foot meridian capacitor C20 connection 3.3V power supply, A0 pin, A1 pin, A2 pin and the GND pin of memory U5
Ground connection, the SCL pin of memory U5 connect 3.3V power supply through resistance R17, resistance R18 respectively with SDA pin.
Microcontroller U4, memory U5 are memory module, for storage the data in control module.
3.3V power supply is also connected with transceiver U6, the model MAX3485 of transceiver U6, is the low of realization full-duplex communication
Power consumption transceiver, transceiver U6 share RO pin ,/RE pin, DE pin, DI pin, VCC pin, B pin, A pin and GND
The VCC pin of 8 pins of pin, transceiver U6 connects 3.3V power supply, and the VCC pin of transceiver U6 is grounded through capacitor C21, receives and dispatches
Device U6 /RE pin and DE pin pass through resistance R19 and be grounded, the GND pin ground connection of transceiver U6, the B pin of transceiver U6
It is connected separately with plug-in unit JP4 with A pin, there are two port, the B of transceiver U6 by the model 2CON_1 of plug-in unit JP4, plug-in unit JP4
Pin is grounded through resistance R20, and the A pin of transceiver U6 is through resistance R21 connection 3.3V power supply, the one end resistance R21 ground connection.
Transceiver U6 is communication module, to be used for transmission the data in control module.
It further include plug-in unit U7, i.e., address read module, the model 16CON_2 of plug-in unit U7, plug-in unit U7 have 16 referring to Fig. 3
A port, wherein 1 to 8 port is used for exports coding address, 9 to 16 ports ground connection is used to carry out address to each monitoring region
Coding, and by occur fire area address code input control module in, for control module identify.
It further include plug-in unit X3, plug-in unit X3 has 12 ports, wherein 1 to 3 port connect with 5V voltage and connects through capacitor C22
Ground, capacitor C22 are electrolytic capacitor, and anode is connect with plug-in unit X3, wherein 5 to 6 ports are respectively through resistance R23, resistance R22 and control
The connection of molding block, wherein 8 to 12 ports are grounded, plug-in unit X3 is display panel module, for reading and in display control module
The address code of fire real time data and fire point shows what This floor or each detector of this fire compartment and fire alarm were warned in time
Real-time condition preferably confirms fire dangerous situation conducive to duty personnel and takes fire protection.
It further include K1 button, K2 button, K3 button and K4 button, the model of button is SW-PB, one end warp of K1 button
Resistance R26 connection 3.3V voltage, other end ground connection, through resistance R27 connection 3.3V voltage, the other end is grounded for one end of K2 button,
One end of K3 button is through resistance R28 connection 3.3V voltage, and other end ground connection, one end of K4 button is through resistance R29 connection 3.3V electricity
Pressure, other end ground connection, K1 button, K2 button, K3 button and K4 button form noise reduction key module, to be used for manual elimination sound report
Alert signal, so that buzzer S1 is mute, until there is new fire alarming value input.
It further include light emitting diode E1, light emitting diode E2, light emitting diode E3 and light emitting diode E4, light emitting diode
The anode of E1 is connect through resistance R30 with control module, and the cathode ground connection of light emitting diode E1, the anode of light emitting diode E2 is through electricity
Resistance R31 is connect with control module, the cathode ground connection of light emitting diode E2,
The anode of light emitting diode E3 is connect through resistance R32 with control module, the cathode ground connection of light emitting diode E3,
The anode of light emitting diode E4 is connect through resistance R33 with control module, the cathode ground connection of light emitting diode E4,
Light emitting diode E1, light emitting diode E2, light emitting diode E3 and light emitting diode E4 form light emitting module, in fire
When generate visual alarm, serve as warning.
The GP5 pin of microcontroller U3 is connected with photo-coupler U8, the model 817 of photo-coupler U8, light through resistance R36
Coupler U8 includes photophore and light-receiving device, and the Single port connection of resistance R36 and photophore, the another port of photophore is connected with
5V power supply, the another port of photophore connect the GP5 pin of microcontroller U3 through resistance R35 with light emitting diode E6, and luminous two
The anode of pole pipe E6 is connect with resistance R35, one end ground connection of light-receiving device, the other end link control module of light-receiving device, light-receiving device
The other end through resistance R34 connect 3.3V power supply.
The GP4 pin of microcontroller U3 is connected with photo-coupler U9, the model 817 of photo-coupler U9, photo-coupler U9
Including photophore and light-receiving device, one end of light-receiving device is grounded, the GP4 pin of the other end connection microcontroller U3 of light-receiving device, by
The other end of light device through resistance R37 connection 5V power supply, one end of photophore through resistance R39 link control module, photophore it is another
One end connects 3.3V power supply, and the other end of photophore is through resistance R38 and light emitting diode E5 link control module, light emitting diode
The anode of E5 is connect with resistance R38.
Photo-coupler U8, photo-coupler U9 are coupling element, for electrical isolation control module and microcontroller U3.
Referring to Fig. 4, control module is single-chip microcontroller LPC1752, and control module is connected with button S1, the model of button S1
2 ports of CON, button S1 are grounded through resistance R24 connection 3.3V power supply, 2 ports of button S1 through capacitor C23,1 end of button S1
Mouth ground connection.
Control module is connected with button K5, and 1 port of the model SW-PB of button K5, button K5 are grounded, and the 2 of button K5
Through resistance R25 connection 3.3V power supply, 2 ports of button K5 are grounded through capacitor C24 for port.
The implementation principle of the present embodiment are as follows:
Rectifier bridge DR1, voltage stabilizing chip U1, three linear voltage-stablizer U2 by the alternating current of 24- to 24+ be converted to 5V operating voltage and
3.3V operating voltage output, to provide operating voltage for single-chip microcontroller LPC1752, buzzer S1, noise reduction key module.
It is straight that the alternating current of L- to L+ is converted to 5V by plug-in unit JP1, plug-in unit JP2, rectifier bridge DR2, resistance R5 and triode Q2
Galvanic electricity output, provides operating voltage and reference voltage for microcontroller U3.
When fire occurs, the analog signal of plug-in unit JP3 acquisition scene of fire is simultaneously inputted in microcontroller U3, microcontroller
U3 receives input signal and through photo-coupler U8, photo-coupler U9 to single-chip microcontroller LPC1752 coupling input feedback signal.
After single-chip microcontroller LPC1752 receives feedback signal, plug-in unit U7 reads fire point coded address and inputs single-chip microcontroller
Inside LPC1752, single-chip microcontroller LPC1752 will be inside the real-time data situations input plug-in unit X3 of scene of fire and in the screen of plug-in unit X3
It is shown on curtain.
Meanwhile single-chip microcontroller LPC1752 is to light emitting diode E1, light emitting diode E2, light emitting diode E3, light emitting diode
E4 and buzzer S1 output control signal, light emitting diode E1, light emitting diode E2, light emitting diode E3, light emitting diode E4
It shines, generates visual alarm；Buzzer S1 buzzing generates acoustic alarm signal.
Duty personnel can make manually buzzer S1 mute after finding fire dangerous situation by noise reduction key module, until going out again
Existing fire alarm signal.
And then the information that fire display panel circuit receives and real-time display alarm controller transmits, to show this in time
The real-time condition that floor or each detector of this fire compartment and fire alarm are warned is conducive to duty personnel and preferably confirms fire dangerous situation simultaneously
Take fire protection.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this
Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it
It is interior.
Claims (10)
1. fire display panel circuit, it is characterized in that: including the second power supply module and converting unit, the converting unit is used for mould
Quasi- signal is converted to digital signal and exports, and second power supply module is used to provide operating voltage and ginseng for the converting unit
Examine voltage, the input terminal of the converting unit is connected with the acquisition module of the analog signal for acquiring scene of fire, and described turn
The output end for changing unit is connected with control module for regulating and controlling fire display panel, and the control module is connected with for reading fire
The address read module of calamity point coded address and the display panel module of the real-time data situations for showing scene of fire.
2. fire display panel circuit according to claim 1, it is characterized in that: the control module is single-chip microcontroller LPC1752,
The control module is connected with the communication module for being used for transmission the real-time data situations of scene of fire and for storing single-chip microcontroller
The memory module of the internal data of LPC1752.
3. fire display panel circuit according to claim 1, it is characterized in that: the control module is also connected in fire
The light emitting module of visual alarm is generated when calamity.
4. fire display panel circuit according to claim 1, it is characterized in that: the control module is connected with for mentioning for it
For the first power supply module of operating voltage.
5. fire display panel circuit according to claim 4, it is characterized in that: first power supply module is connected with for sending out
The acoustic element of acoustic alarm signal out, one end of the acoustic element pass through the driving part for driving the acoustic element work
It is connect with the control module.
6. fire display panel circuit according to claim 5, it is characterized in that: first power supply module is connected with for hand
The dynamic noise reduction key module for eliminating the acoustic alarm signal that the acoustic element issues.
7. fire display panel circuit according to claim 1, it is characterized in that: the output end of the converting unit is passed through for electricity
Air bound is connect from the coupling element of input terminal and output end with the control module.
8. fire display panel circuit according to claim 6, it is characterized in that: first power supply module includes rectifier bridge
The linear voltage-stablizer U2 of DR1, voltage stabilizing chip U1 and three, the cathode output end of the rectifier bridge DR1 and the voltage stabilizing chip U1's
Input terminal connection, the output end of the voltage stabilizing chip U1 are connect with the input terminal of described three linear voltage-stablizer U2, three end
The output end of linear voltage regulator U2 is connect with the control module, and the output end and the acoustic element of the voltage stabilizing chip U1 connects
It connects, the output end of the three linear voltage-stablizer U2 is connect with the noise reduction key module.
9. fire display panel circuit according to claim 8, it is characterized in that: the cathode output end of the rectifier bridge DR1 passes through
Oppositely arranged Transient Suppression Diode ground connection, the cathode output end of the rectifier bridge DR1 inhibit through capacitor C1 and the transient state
The cathode of diode connects.
10. fire display panel circuit according to claim 8, it is characterized in that: the cathode output end of the rectifier bridge DR1 passes through
The electrolytic capacitor ground connection of forward direction setting, the anode of the electrolytic capacitor are connect with the input terminal of the voltage stabilizing chip U1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910214471.5A CN109816916A (en) | 2019-03-20 | 2019-03-20 | Fire display panel circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910214471.5A CN109816916A (en) | 2019-03-20 | 2019-03-20 | Fire display panel circuit |
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| CN109816916A true CN109816916A (en) | 2019-05-28 |
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