CN208015445U - A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit - Google Patents
A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit Download PDFInfo
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- CN208015445U CN208015445U CN201820240564.6U CN201820240564U CN208015445U CN 208015445 U CN208015445 U CN 208015445U CN 201820240564 U CN201820240564 U CN 201820240564U CN 208015445 U CN208015445 U CN 208015445U
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- lithium battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provide a kind of active and standby electricity of fire alarm control unit automatically switch, detection and protection circuit, including active and standby electric automatic switch-over circuit, short interruption detection circuit and standby electric protection circuit.Active and standby electricity automatic switch-over circuit includes main power source, lithium battery stand-by power supply, power supply switching chip and P-channel metal-oxide-semiconductor, can realize that active and standby electricity automatically switches；Short interruption detection circuit includes main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage collection circuit, can acquire the voltage of the voltage and lithium battery stand-by power supply of main power source, judges whether that short circuit, open circuit fault occurs；Standby electric protection circuit includes lithium battery charging management chip, diode and N-channel MOS pipe, can realize charge and discharge protecting.The utility model switching action is fast, handoff procedure is noiseless, no-voltage falls, increases that compensation circuit, component are at low cost without additional, and greatly improves the job stability of lithium battery stand-by power supply, reliability, safety.
Description
Technical field
The utility model is related to fire alarm control unit fields, and in particular to a kind of active and standby electricity of fire alarm control unit is automatic
Switching, detection and protection circuit.
Background technology
Fire is merciless and harm is huge, can all occur much to play fire every year, cause one and another property by huge
There is huge injures and deaths, the tragedy of many fragmentation chambers in volume loss, personnel.Wherein family fire due to its induce fire it is dangerous because
Element is more, personnel's vigilance is not high, fireproof fire-extinguishing and means of escape are deficient, the originals such as escape inconvenience caused by high-rise even Super High
Cause is usually easier that fire occurs, it is easier to cause huge loss.
Household fire alarm control unit can monitor home environment constantly, and when a fire, controller is receiving detection
After the fire alarm signal that device is sent out, fire alarm acousto-optic indication signal will be sent out at once, to stamp out a fire in time and people
Member's escape tries to gain time precious to one, and can greatly reduce property loss and casualties.
And country formulated and is issued in 2008《Household fire safety evaluating system》The standard of aspect, wherein to household fire
The switch between alternating current and standby battery, the active and standby electric short circuit of detection and the open circuit fault of alarm controller have relevant regulation for electric protection etc..
Although and there is the Switching Power Supply of conventional fire alarm controller the switch between alternating current and standby battery, detection short circuit and open circuit fault and standby electricity to protect
The function of shield, but generally use relay as switching component, thus in handoff procedure have slow motion, have noise,
Voltage has the shortcomings that fall, it is big, of high cost to need additionally to increase compensation circuit, volume and not easy care.
Utility model content
It is slow for the switch between alternating current and standby battery existing for existing fire alarm control unit, have the shortcomings that noise, the utility model carry
A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit have been supplied, can realize active and standby electricity automatic switchover, MOS
The advantages that pipe switching action is fast, handoff procedure is noiseless.
The utility model uses technical solution below：
A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit, including active and standby electricity automatic switchover are electric
Road, short interruption detection circuit and standby electric protection circuit；
Active and standby electricity automatic switch-over circuit includes main power source, lithium battery stand-by power supply, power supply switching chip and P-channel metal-oxide-semiconductor,
Main power source is connected with power supply switching chip, and power supply switching chip is connected with P-channel metal-oxide-semiconductor, and power supply switches chip controls P-channel
Metal-oxide-semiconductor is cut-off, and the lithium battery stand-by power supply is connected with P-channel metal-oxide-semiconductor；
The short interruption detection circuit includes that main power source terminal voltage Acquisition Circuit and lithium battery stand-by power supply terminal voltage are adopted
Collector, main power source terminal voltage Acquisition Circuit are connected on main power source, can acquire the voltage of main power source, lithium battery standby electricity source
Voltage collection circuit is connected on lithium battery stand-by power supply, can acquire the voltage of lithium battery stand-by power supply；
The standby electric protection circuit includes lithium battery charging management chip, diode and N-channel MOS pipe, the main power source
It is connected with lithium battery charging management chip by diode, lithium battery charging management chip is connected with lithium battery stand-by power supply, main
Power supply can be charged by diode and lithium battery charging management chip for lithium battery stand-by power supply, lithium battery charging management chip pipe
The electricity for managing lithium battery stand-by power supply, when lithium battery stand-by power supply is fully charged, lithium battery charging management chip stops main power source
It charges to lithium battery stand-by power supply；
The lithium battery stand-by power supply is connected with N-channel MOS pipe, and N-channel MOS pipe can be in lithium battery stand-by power supply overdischarge
When turn off.
Preferably, the anode of the main power source switches chip with power supply respectively and diode is connected, the lithium battery charging
Managing chip is connected with the anode of lithium battery stand-by power supply, and the cathode of lithium battery stand-by power supply passes through N-channel MOS pipe and main power source
Cathode be connected.
Preferably, the main power source terminal voltage Acquisition Circuit is connected to the positive and negative end of main power source, lithium battery standby electricity
Source voltage terminal Acquisition Circuit is connected to the positive and negative end of lithium battery stand-by power supply；
The main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage collection circuit include concatenated two
A resistance, wherein a resistor in parallel have capacitance.
Preferably, the lithium battery stand-by power supply electric discharge when, if the electricity of lithium battery stand-by power supply put to protection point with
Under, then N-channel MOS pipe turns off.
The utility model has an advantageous effect in that：
The active and standby electricity of the fire alarm control unit automatically switches, detects and protects circuit, and fire alarm control unit is made to realize master
Automatic switchover between power supply, stand-by power supply, and during switching, other works of fire alarm control unit will not be caused
Make the change of state, and can be realized to active and standby electric fault by the AD acquisitions of the terminal voltage to main electric power supply, stand-by power supply
Detection, then overcharging and cross and put to lithium battery stand-by power supply is realized by lithium battery charging management chip and N-channel MOS pipe
Protection.The utility model is not only small, switching action is fast, handoff procedure is noiseless, no-voltage falls, is mended without additional increase
It repays that circuit, component are at low cost, and greatly improves the job stability of lithium battery stand-by power supply, reliability, safety,
Simply it is easy to investigate failure, repair and maintenance additionally, due to operation principle.
Description of the drawings
Fig. 1 is the circuit diagram of a kind of active and standby electricity automatic switchover of fire alarm control unit, detection and protection circuit.
Specific implementation mode
The utility model is specifically described below in conjunction with the accompanying drawings：
In conjunction with Fig. 1, a kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit, including active and standby electricity is certainly
Dynamic switching circuit, short interruption detection circuit and standby electric protection circuit.
Master controller is additionally provided in fire alarm control unit.
Active and standby electricity automatic switch-over circuit includes main power source, lithium battery stand-by power supply, power supply switching chip D1 and P-channel MOS
Pipe V1, main power source are connected with power supply switching chip D1, and power supply switching chip D1 is connected with P-channel metal-oxide-semiconductor V1, and power supply switches chip
D1 control P-channel metal-oxide-semiconductor V1's cut-offs.
Lithium battery stand-by power supply is connected with P-channel metal-oxide-semiconductor V1.
Short interruption detection circuit includes main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage acquisition electricity
Road, main power source terminal voltage Acquisition Circuit are connected on main power source, can acquire the voltage of main power source.
Lithium battery standby electricity source voltage collection circuit is connected on lithium battery stand-by power supply, can acquire lithium battery standby electricity
The voltage in source.
Main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage collection circuit are connected with master controller.
Standby electric protection circuit includes lithium battery charging management chip D2, diode V4 and N-channel MOS pipe V5, and main power source is logical
It crosses diode V4 with lithium battery charging management chip D2 to be connected, lithium battery charging management chip D2 and lithium battery stand-by power supply phase
Even, main power source can be charged by diode and lithium battery charging management chip for lithium battery stand-by power supply, lithium battery Charge Management
The electricity of management of software ic lithium battery stand-by power supply, when lithium battery stand-by power supply is fully charged, lithium battery charging management chip stops
Main power source charges to lithium battery stand-by power supply.
Lithium battery stand-by power supply is connected with N-channel MOS pipe V5, and N-channel MOS pipe V5 can be in lithium battery stand-by power supply overdischarge
When turn off.
Lithium battery charging management chip D2 and N-channel MOS pipe V5 are connected with master controller.
Specifically, the anode of main power source is connected with power supply switching chip D1 and diode V4 respectively, lithium battery Charge Management
Chip D2 is connected with the anode of lithium battery stand-by power supply, and the cathode of lithium battery stand-by power supply passes through N-channel MOS pipe V5 and main power source
Cathode be connected, the cathode of main power source ground connection.
Main power source terminal voltage Acquisition Circuit is connected to the positive and negative end of main power source, lithium battery standby electricity source voltage acquisition
It is electrically connected to the positive and negative end of lithium battery stand-by power supply；
Main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage collection circuit include concatenated two electricity
Resistance, a resistor in parallel has capacitance wherein, is connected with master controller between two resistance, main controller can acquire main power source
The voltage of the voltage and lithium battery standby electricity source at end.
As shown in Figure 1, the anode of main power source is connected with the SENSE pins of power supply switching chip D1, power supply switches chip
SENSE pins are also connected with the source electrode of P-channel metal-oxide-semiconductor, and power supply switches the grid phase of the GATE pins and P-channel metal-oxide-semiconductor of chip
Even, the VIN pins of power supply switching chip are connected with the drain electrode of P-channel metal-oxide-semiconductor, and power supply switches the GND pin and CTL pins of chip
It is grounded.
The anode of lithium battery stand-by power supply is connected with the drain electrode of P-channel metal-oxide-semiconductor, cathode and the N ditches of lithium battery stand-by power supply
Road metal-oxide-semiconductor is connected.
Lithium battery standby electricity source voltage collection circuit includes concatenated resistance R1 and resistance R2, and resistance R1 and lithium battery are standby
It is connected with the anode of power supply, resistance R2 is connected with the cathode of lithium battery stand-by power supply, and capacitance C2 is parallel on resistance R2.
Main power source terminal voltage Acquisition Circuit includes concatenated resistance R11 and R12, and resistance R11 is connected with the anode of main power source,
Resistance R12 is connected with the cathode of main power source, and capacitance C6 is parallel on resistance R12.
The IN pins of lithium battery charging management chip are connected with the cathode of diode V4, and the cathode of diode V4 passes through capacitance
C5 is grounded, and the cathode of diode V4 is connected by resistance R7 with the VBIAS pins of lithium battery charging management chip, lithium battery charging
The VBIAS pins of managing chip are also grounded by resistance R8, and the cathode of diode V4 passes through concatenated resistance R6 and light-emitting diodes
Pipe V3 is connected with the ACOK pins of lithium battery charging management chip, and the cathode of diode V4 passes through concatenated resistance R5 and luminous two
Pole pipe V2 is connected with the CHG pins of lithium battery charging management chip, and light emitting diode V2 is charging indicator light, light emitting diode V3
It is power supply indicator, the working condition of visual indication lithium battery charging management chip；
The EN pins of lithium battery charging management chip are grounded by resistance R10, pass through resistance R9 and direct current 3.3V power supply phases
Even, the BATT pins of lithium battery charging management chip are connected with the anode of lithium battery stand-by power supply, are also grounded by capacitance C3；Lithium
The ISET pins of battery charging management chip are grounded by resistance R3, and the IBF pins of lithium battery charging management chip pass through resistance
R4 is grounded, and the SS pins of lithium battery charging management chip are grounded by capacitance C4, and the GND pin of lithium battery charging management chip connects
Ground.
After load access, capacitance C1 is parallel in load, master controller acquires main power source and lithium battery standby electricity at any time
Source voltage condition, when there is main power source input, power supply switches chip D1 control P-channel metal-oxide-semiconductor V1 shutdowns, and main power source is to load
Power supply, i.e. electric current are flowed out by main power source anode, through overload, are returned main power source cathode, are formed current supply circuit, at this time main electricity
Source powering load；And when dereliction power input, power supply switches chip D1 control P-channel metal-oxide-semiconductor conductings, and lithium battery is standby at this time
With plant-grid connection, electric current is flowed out by lithium battery stand-by power supply anode, by P-channel metal-oxide-semiconductor V1, through overload, using N ditches
Road metal-oxide-semiconductor V5 returns to lithium battery stand-by power supply cathode, forms current supply circuit, that is, is switched to lithium battery stand-by power supply and is supplied to load
Electricity.Which achieves active and standby electricity to automatically switch, and whether power supply switching chip D1 detection main power sources input during this, and then control
P-channel metal-oxide-semiconductor V1 switchings processed.
When having main power source and lithium battery stand-by power supply not enough power supply the case where, electric current is flowed out by main power source anode,
Lithium battery stand-by power supply anode is reached, by lithium battery standby electricity by lithium battery charging management chip D2 by diode V4
Source cathode returns to main power source cathode using N-channel MOS pipe V5, forms charge circuit；When lithium battery stand-by power supply electricity fills
When full, lithium battery charging management chip D2 stops main power source and charges to lithium battery stand-by power supply, to lithium battery stand-by power supply
Realize the function of overcharging protection.
Main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage collection circuit, can acquire main power source terminal voltage
With lithium battery stand-by power supply terminal voltage value, once short circuit, open circuit conditions, master controller occur for main power source or lithium battery stand-by power supply
It can detect and be out of order in time, realize open circuit, short-circuit detecting.
When lithium battery stand-by power supply discharges, electric current is flowed out by lithium battery stand-by power supply anode, by P-channel metal-oxide-semiconductor
V1 returns to lithium battery stand-by power supply cathode, when the electricity of lithium battery stand-by power supply through overload using N-channel MOS pipe V5
It puts to protection point hereinafter, then main controller controls N-channel MOS pipe V5 shutdowns, realize the Cross prevention of lithium battery stand-by power supply.
Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, are also answered
Belong to the scope of protection of the utility model.
Claims (4)
1. a kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit, which is characterized in that certainly including active and standby electricity
Dynamic switching circuit, short interruption detection circuit and standby electric protection circuit；
Active and standby electricity automatic switch-over circuit includes main power source, lithium battery stand-by power supply, power supply switching chip and P-channel metal-oxide-semiconductor, main electricity
Source is connected with power supply switching chip, and power supply switching chip is connected with P-channel metal-oxide-semiconductor, and power supply switches chip controls P-channel metal-oxide-semiconductor
Cut-off, the lithium battery stand-by power supply is connected with P-channel metal-oxide-semiconductor；
The short interruption detection circuit includes main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage acquisition electricity
Road, main power source terminal voltage Acquisition Circuit are connected on main power source, can acquire the voltage of main power source, lithium battery stand-by power supply terminal voltage
Acquisition Circuit is connected on lithium battery stand-by power supply, can acquire the voltage of lithium battery stand-by power supply；
The standby electric protection circuit includes lithium battery charging management chip, diode and N-channel MOS pipe, and the main power source passes through
Diode is connected with lithium battery charging management chip, and lithium battery charging management chip is connected with lithium battery stand-by power supply, main power source
It can be charged for lithium battery stand-by power supply by diode and lithium battery charging management chip, lithium battery charging management chip manages lithium
The electricity of battery backup power source, when lithium battery stand-by power supply is fully charged, lithium battery charging management chip stops main power source to lithium
Battery backup power source charges；
The lithium battery stand-by power supply is connected with N-channel MOS pipe, and N-channel MOS pipe can be closed in lithium battery stand-by power supply overdischarge
It is disconnected.
2. the active and standby electricity of a kind of fire alarm control unit according to claim 1 automatically switches, detects and protects circuit, special
Sign is that the anode of the main power source switches chip with power supply respectively and diode is connected, the lithium battery charging management chip
It is connected with the anode of lithium battery stand-by power supply, the cathode phase that the cathode of lithium battery stand-by power supply passes through N-channel MOS pipe and main power source
Even.
3. the active and standby electricity of a kind of fire alarm control unit according to claim 1 automatically switches, detects and protects circuit, special
Sign is that the main power source terminal voltage Acquisition Circuit is connected to the positive and negative end of main power source, lithium battery stand-by power supply terminal voltage
Acquisition Circuit is connected to the positive and negative end of lithium battery stand-by power supply；
The main power source terminal voltage Acquisition Circuit and lithium battery standby electricity source voltage collection circuit include concatenated two electricity
Resistance, a resistor in parallel has capacitance wherein.
4. the active and standby electricity of a kind of fire alarm control unit according to claim 1 automatically switches, detects and protects circuit, special
Sign is, the lithium battery stand-by power supply in electric discharge, the electricity if lithium battery stand-by power supply put to protection point hereinafter, if N ditches
Road metal-oxide-semiconductor shutdown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820240564.6U CN208015445U (en) | 2018-02-09 | 2018-02-09 | A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820240564.6U CN208015445U (en) | 2018-02-09 | 2018-02-09 | A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208015445U true CN208015445U (en) | 2018-10-26 |
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ID=63886358
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820240564.6U Active CN208015445U (en) | 2018-02-09 | 2018-02-09 | A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633291A (en) * | 2018-12-20 | 2019-04-16 | 兰州空间技术物理研究所 | Bias current master backup switching circuit in a kind of space electric field detection system |
| CN111277039A (en) * | 2020-01-21 | 2020-06-12 | 南京迈瑞生物医疗电子有限公司 | Power management method and power system of operating room equipment, operating lamp and operating table |
| CN113129538A (en) * | 2021-04-20 | 2021-07-16 | 杭州字节信息技术有限公司 | Relay type fire display panel and wireless fire alarm system |
| CN113794613A (en) * | 2021-09-13 | 2021-12-14 | 中车大连机车研究所有限公司 | Direct-current carrier communication module of locomotive fire-fighting controller |
| US11287462B2 (en) | 2019-07-19 | 2022-03-29 | Carrier Corporation | Status detection of alarm sounding parts |
-
2018
- 2018-02-09 CN CN201820240564.6U patent/CN208015445U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109633291A (en) * | 2018-12-20 | 2019-04-16 | 兰州空间技术物理研究所 | Bias current master backup switching circuit in a kind of space electric field detection system |
| CN109633291B (en) * | 2018-12-20 | 2020-11-27 | 兰州空间技术物理研究所 | Bias current main backup switching circuit in space electric field detection system |
| US11287462B2 (en) | 2019-07-19 | 2022-03-29 | Carrier Corporation | Status detection of alarm sounding parts |
| CN111277039A (en) * | 2020-01-21 | 2020-06-12 | 南京迈瑞生物医疗电子有限公司 | Power management method and power system of operating room equipment, operating lamp and operating table |
| CN113129538A (en) * | 2021-04-20 | 2021-07-16 | 杭州字节信息技术有限公司 | Relay type fire display panel and wireless fire alarm system |
| CN113794613A (en) * | 2021-09-13 | 2021-12-14 | 中车大连机车研究所有限公司 | Direct-current carrier communication module of locomotive fire-fighting controller |
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