CN105929326A - Switch carrier isolation monitoring device and emergency power supply - Google Patents
Switch carrier isolation monitoring device and emergency power supply Download PDFInfo
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- CN105929326A CN105929326A CN201610429897.9A CN201610429897A CN105929326A CN 105929326 A CN105929326 A CN 105929326A CN 201610429897 A CN201610429897 A CN 201610429897A CN 105929326 A CN105929326 A CN 105929326A
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- carrier signal
- outfan
- switch
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- signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
- G01R31/3278—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches of relays, solenoids or reed switches
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuits Of Receivers In General (AREA)
- Alarm Systems (AREA)
Abstract
The invention provides a switch carrier isolation monitoring device and an emergency power supply. The switch carrier isolation monitoring device provided by the invention comprises a carrier signal modulating unit, a carrier signal isolation unit and a carrier signal demodulation unit. The input end of the carrier signal isolation unit is connected with a switch. The output end is connected with the first input end of the carrier signal modulating unit. The carrier signal isolation unit is used for isolating an input signal and outputting the signal through an output end. The second input end of the carrier signal modulating unit is used for receiving a digital carrier signal. The carrier signal modulating unit is used for mixing the digital carrier signal and the signal output by the carrier signal isolation unit, and outputting an acquired carrier modulation signal through an output end. The carrier signal demodulation unit is used for outputting a switch monitoring signal demodulated from the carrier modulation signal. According to the switch carrier isolation monitoring device and the emergency power supply, a digital carrier technology is used to monitor the switch signal, and the reliability and the security of switch monitoring are improved.
Description
Technical field
The present invention relates to a kind of switch carrier wave isolation monitoring device and emergency power supply.
Background technology
Existing emergency power supply hand control switch is typically connected separately to mains isolation rectification be filtered by transformator
On low-voltage control circuit after ripple, for ease of management and use, the normal switch and manually of controlling of emergency power supply
Control switch and be typically mounted at together, owing to hand control switch is weak electric signal, if being arranged on one with forceful electric power
Rise and be vulnerable to forceful electric power interference and make mistakes, and then affect the reliability of product.
Summary of the invention
For defect of the prior art, the switch carrier wave that the present invention provides is isolated monitoring device and answers urgent telegram
Source, utilizes digital carrier technology to realize the monitoring of switching signal, improves reliability and the safety of switch monitors
Property.
First aspect, the switch carrier wave isolation monitoring device that the present invention provides includes: carrier signal modulating unit,
Carrier signal isolated location and carrier signal demodulating unit；The input of described carrier signal isolated location is used for
Connecting valve, the outfan of described carrier signal isolated location connects the first of described carrier signal modulating unit
Input, described carrier signal isolated location is for by defeated by outfan after the signal isolation processing of input
Go out；Second input of described carrier signal modulating unit is used for receiving digital carrier signal, and described carrier wave is believed
Number outfan of modulating unit is connected with the input of described carrier signal demodulating unit, and described carrier signal is adjusted
Unit processed, for mixing described digital carrier signal and the signal of described carrier signal isolated location output, obtains
Exported by outfan after carrier (boc) modulated signals；Described carrier signal demodulating unit is for from described carrier modulation
Signal demodulates switch monitors signal, and is exported by the outfan of described carrier signal demodulating unit.
As shown from the above technical solution, the switch carrier wave isolation monitoring device that the present invention provides, utilize numeral to carry
Wave technology realizes the monitoring of switching signal, improves reliability and the safety of switch monitors.
Alternatively, described carrier signal isolated location includes voltage isolated converter, described voltage isolated variable
The input of device is the input of described carrier signal isolated location, the outfan of described voltage isolated converter
Outfan for described carrier signal isolated location；Described carrier signal modulating unit includes a field effect transistor
With a resistance, the drain electrode of described field effect transistor is connected with the outfan of described carrier signal isolated location, institute
State the grid of field effect transistor for receiving described digital carrier signal, described resistance one end and described field effect transistor
Source electrode connect, the other end ground connection of described resistance；Described carrier signal demodulating unit include RC circuit and
One audion, the input of described RC circuit is connected with the source electrode of described field effect transistor, described RC circuit
Outfan be connected with the base stage of described audion, the grounded emitter of described audion, described audion
The outfan of current collection the most described carrier signal demodulating unit.
Alternatively, described carrier signal isolated location also includes the controlled detecting circuit of current limliting, and described current limliting is controlled
Detecting circuit for the high-tension electricity of switch being converted to the electric current that is suitable for and carrying out detection, the controlled inspection of described current limliting
Wave circuit input is connected with described switch, the outfan of the controlled detecting circuit of described current limliting and described voltage every
Input from changer connects.
Second aspect, the emergency power supply that the present invention provides includes: emergency button, power control, switch
Carrier wave isolation monitoring device and backup battery group；Described switch carrier wave isolation monitoring device, is used for monitoring described
The break-make situation of emergency button, is sent to power supply control by digital carrier signal modulation and demodulation by monitoring result
Device processed；Described power control, is used for monitoring civil power situation, and according to civil power situation and the prison of switch
Survey result to judge whether to use described backup battery group；The isolation monitoring of described emergency button, described switch carrier wave
Device is sequentially connected with described power control；Described power control and described backup battery group phase
Even.
As shown from the above technical solution, the emergency power supply that the present invention provides, utilizing digital carrier technology to realize should
The monitoring of anxious switching signal, improves reliability and the safety of switch monitors.
Alternatively, described switch carrier wave isolation monitoring device includes: carrier signal modulating unit, carrier signal
Isolated location and carrier signal demodulating unit；The input of described carrier signal isolated location is used for connecting described
Emergency button, the outfan of described carrier signal isolated location connects the first of described carrier signal modulating unit
Input, described carrier signal isolated location is for by defeated by outfan after the signal isolation processing of input
Go out；Second input of described carrier signal modulating unit is used for receiving digital carrier signal, and described carrier wave is believed
Number outfan of modulating unit is connected with the input of described carrier signal demodulating unit, and described carrier signal is adjusted
Unit processed, for mixing described digital carrier signal and the signal of described carrier signal isolated location output, obtains
Exported by outfan after carrier (boc) modulated signals；Described carrier signal demodulating unit is for from described carrier modulation
Signal demodulates switch monitors signal, and is exported by the outfan of described carrier signal demodulating unit.
Alternatively, described carrier signal isolated location includes voltage isolated converter, described voltage isolated variable
The input of device is the input of described carrier signal isolated location, the outfan of described voltage isolated converter
Outfan for described carrier signal isolated location；Described carrier signal modulating unit includes a field effect transistor
With a resistance, the drain electrode of described field effect transistor is connected with the outfan of described carrier signal isolated location, institute
State the grid of field effect transistor for receiving the digital carrier signal that described power control sends, described resistance
One end is connected with the source electrode of described field effect transistor, the other end ground connection of described resistance；Described carrier signal demodulates
Unit includes RC circuit and an audion, the input of described RC circuit and the source electrode of described field effect transistor
Connecting, the outfan of described RC circuit is connected with the base stage of described audion, the emitter stage of described audion
Ground connection, the outfan of the current collection the most described carrier signal demodulating unit of described audion.
The third aspect, the emergency power supply that the present invention provides, including: power control, switch carrier wave isolation
Monitoring device and backup battery group；Described switch carrier wave isolation monitoring device is for monitoring the break-make of urban electric power switch
Situation, is sent to power control by digital carrier signal modulation and demodulation by monitoring result；Described electricity
Source control device, is used for monitoring civil power situation, and judges whether according to the monitoring result of civil power situation and switch
Use described backup battery group；Described switch carrier wave isolation monitoring device and described power control successively phase
Even；Described power control is connected with described backup battery group.
As shown from the above technical solution, the emergency power supply that the present invention provides, utilize digital carrier technology to realize city
The monitoring of electric switch signal, improves reliability and the safety of switch monitors, and by urban electric power switch with emergent
Switch unites two into one, convenient installation.
Alternatively, described switch carrier wave isolation monitoring device includes: carrier signal modulating unit, carrier signal
Isolated location and carrier signal demodulating unit；The input of described carrier signal isolated location is used for connecting civil power
Switch, the outfan of described carrier signal isolated location connects the first input of described carrier signal modulating unit
End, described carrier signal isolated location is for exporting by outfan after the signal isolation processing of input；Institute
State the second input of carrier signal modulating unit for receiving digital carrier signal, described carrier signal modulation
The outfan of unit is connected with the input of described carrier signal demodulating unit, described carrier signal modulating unit
For mixing described digital carrier signal and the signal of described carrier signal isolated location output, obtain carrier wave and adjust
Exported by outfan after signal processed；Described carrier signal demodulating unit is for from described carrier (boc) modulated signals
Demodulate switch monitors signal, and exported by the outfan of described carrier signal demodulating unit.
Alternatively, described carrier signal isolated location includes voltage isolated converter and current limliting controlled detection electricity
Road, the controlled detecting circuit of described current limliting for being converted to the electric current that is suitable for and examining by the high-tension electricity of switch
Ripple, described current limliting controlled detecting circuit input is connected with described urban electric power switch, described current limliting controlled detection electricity
The outfan on road is connected with the input of described voltage isolated converter, the output of described voltage isolated converter
End connects described carrier signal modulating unit；
Described carrier signal modulating unit includes a field effect transistor and a resistance, the leakage of described field effect transistor
Pole is connected with the outfan of described carrier signal isolated location, and the grid of described field effect transistor is used for receiving described
The digital carrier signal that power control sends, described resistance one end connects with the source electrode of described field effect transistor
Connect, the other end ground connection of described resistance；
Described carrier signal demodulating unit includes RC circuit and an audion, the input of described RC circuit
Being connected with the source electrode of described field effect transistor, the outfan of described RC circuit is connected with the base stage of described audion,
The grounded emitter of described audion, the current collection the most described carrier signal demodulating unit of described audion defeated
Go out end.
Accompanying drawing explanation
A kind of circuit diagram switching carrier wave isolation monitoring device that Fig. 1 is provided by the embodiment of the present invention；
The structured flowchart of a kind of emergency power supply that Fig. 2 is provided by the embodiment of the present invention；
The structured flowchart of a kind of emergency power supply that Fig. 3 is provided by the embodiment of the present invention.
Reference:
1-switch carrier wave isolation monitoring device；2-power control；3-backup battery group；4-is emergent to be opened
Close；5-urban electric power switch；6-load equipment；
11-carrier signal isolated location；12-carrier signal modulating unit；13-carrier signal demodulating unit.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of technical solution of the present invention is described in detail.Following example
It is only used for clearly illustrating technical scheme, is therefore intended only as example, and can not come with this
Limit the scope of the invention.
It should be noted that except as otherwise noted, technical term used in this application or scientific terminology should
The ordinary meaning understood by those skilled in the art of the invention.
As it is shown in figure 1, the switch carrier wave isolation monitoring device 1 that the embodiment of the present invention provides includes: carrier wave is believed
Number modulating unit 12, carrier signal isolated location 11 and carrier signal demodulating unit 13；Carrier signal is isolated
The input of unit 11 is used for connecting valve, and the outfan of carrier signal isolated location 11 connects carrier signal
The first input end of modulating unit 12, carrier signal isolated location 11 is for the signal isolation processing by input
Exported by outfan afterwards；Second input of carrier signal modulating unit 12 is used for receiving digital carrier letter
Number, the outfan of carrier signal modulating unit 12 is connected with the input of carrier signal demodulating unit 13, carries
Ripple signal modulating unit 12 is for hybrid digital carrier signal and the letter of carrier signal isolated location 11 output
Number, exported by outfan after obtaining carrier (boc) modulated signals；Carrier signal demodulating unit 13 is for from carrier wave
Modulated signal demodulates switch monitors signal, and is exported by the outfan of carrier signal demodulating unit 13.
The switch carrier wave isolation monitoring device that the embodiment of the present invention provides, utilizes digital carrier technology to realize switch
The monitoring of signal, improves reliability and the safety of switch monitors, be widely used in industrial and mineral, petrochemical industry, machine room,
The buildings such as storehouse etc. require higher or more special place.
The implementation of above-mentioned carrier signal isolated location 11 has multiple, as it is shown in figure 1, the present invention implements
Example provides a kind of preferably implementation:
Carrier signal isolated location 11 includes voltage isolated converter T1 and the controlled detecting circuit of current limliting.Voltage
Isolated converter T1 plays isolation two end signals and the effect of voltage transformation.As it is shown in figure 1, current limliting is controlled
Detecting circuit is by diode D2, diode D3, IGCT Q2, resistance R4, resistance R5, critesistor
RT1 is constituted, and D2 two ends connect two joints of voltage isolated converter T1 input, voltage isolated variable
Two ports of the outfan of device T1 two ends with diode D1 respectively are connected, and diode D1 negative pole connects
Power supply VCC, power supply VCC pass through filter capacitor C1 ground connection.For convenience of describing, D3 positive pole is defined as SW2,
RT1 outfan is defined as SW1, and the input of carrier signal isolated location 11 is SW1 and SW2, output
End is TC end.Install switch carrier wave isolation monitoring device 1 time, monitored switch ends respectively with SW1
Connect with SW2.The high pressure civil power of 220V or 380V can be limited in suitable operating current by current-limiting circuit
In the range of, for follow-up detection, the addition of the controlled detecting circuit of current limliting makes carrier signal isolated location
11 can compatible urban electric power switch, therefore this device can directly be connected on two ends, urban electric power switch and use, and uses simpler
Convenient.If this device independent switch in observation circuit certainly, it is also possible to select to save current limliting controlled
Detecting circuit, now two inputs of voltage isolated converter T1 are respectively as carrier signal isolated location 11
Input SW1 and SW2.
Carrier signal modulating unit 12 includes field effect transistor Q1 and resistance R6, the drain electrode of field effect transistor Q1 with
The outfan TC of carrier signal isolated location 11 connects, the grid of field effect transistor Q1 and one end of resistance R2
Connecting, the other end of resistance R2 connects the other end ground connection of resistance R1, resistance R1, resistance R6 one end with
The source electrode of field effect transistor Q1 connects, the other end ground connection of resistance R6.For convenience of describing resistance R1 and electricity
Resistance R2 connects end and is defined as TXD, with resistance R6, the source electrode of field effect transistor Q1 is connected end and is defined as RA.
The first input end that drain electrode is carrier signal modulating unit 12 of field effect transistor Q1, connects carrier signal isolation
The outfan TC of unit 11；TXD is the second input of carrier signal modulating unit 12, is used for receiving number
Word carrier signal；RA is the outfan of carrier signal modulating unit 12.
Carrier signal demodulating unit 13 includes RC circuit and audion Q3, RC electricity routing resistance R3 and electric capacity
C2 forms, and the input of RC circuit is connected with the outfan RA for carrier signal modulating unit 12, RC electricity
The outfan on road is connected with the base stage of audion Q3, the emitter grounding of audion Q3, the collection of audion Q3
Electrode is the outfan of carrier signal demodulating unit 13, is defined as RXD.
The operation principle of above-mentioned switch carrier wave isolation monitoring device 1 is described below in conjunction with Fig. 1.
SW1 and SW2 is connected on the two ends of monitored switch respectively, and TXD end receives digital carrier signal.Field effect
Should pipe Q1 under the control of digital carrier signal, be on, disconnect state alternately, the signal of RA end
For the signal after digital carrier signal and voltage isolated converter T1 induced signal are modulated；When monitored
When switching off, owing to the input of voltage isolated converter T1 does not has current sensing signal, so TC
The voltage that voltage is GND, RA end of end is also GND, and after RC circuit, signal voltage is unable to reach three
The conduction threshold of pole pipe Q3, RXD end output high level.When monitored switch conduction, current signal leads to
After overvoltage isolated converter T1, the voltage of TC end raises；When field effect transistor Q1 turns on, RA end
Voltage also can raise, and after RC circuit, signal voltage reaches the conduction threshold of audion Q3, audion
Q3 turns on, RXD end output low level；When field effect transistor Q1 disconnects, the voltage of RA end is GND, three
Pole pipe Q3 disconnects, RXD end output high level；Therefore, the voltage of RXD end output is digital carrier signal
Inversion signal.Therefore, even if high-tension circuit creates interference to testing circuit, by the signal that demodulates with
Digital carrier signal carries out verification and gets final product filtering interfering, it addition, the RC in carrier signal demodulating unit 13
High-frequency Interference is also functioned to certain filter effect by circuit.
Use the emergency power supply of the hand switch of non-isolated, owing to single on-off control must be used, for just
In management and operation, hand control switch and normal illumination switch are installed together use, due to cabling requirement
Gao Xu producer sends technician to assist to install (if wrong line easily causes security incident), occasional during use
There is damaging the I/O mouth situation of micro controller unit, and then make system malfunctions cisco unity malfunction.For
Solution the problems referred to above embodiments provide following two emergency power supply.
As in figure 2 it is shown, the emergency power supply that the embodiment of the present invention provides includes: emergency button 4, power supply control
Device 2, switch carrier wave isolation monitoring device 1 and backup battery group 3；Switch carrier wave isolation monitoring device 1,
For monitoring the break-make situation of emergency button, by digital carrier signal modulation and demodulation, monitoring result is sent
To power control；Power control 2, is used for monitoring civil power situation, and according to civil power situation with open
The monitoring result closed judges whether to use described backup battery group；Emergency button 4, switch carrier wave isolation monitoring
Device 1 is sequentially connected with power control 2；Power control 2 is connected with backup battery group 3.
Wherein, switch carrier wave isolation monitoring device, to describe in detail before, does not repeats them here.
The internal module having monitoring civil power situation of power control 2, monitoring in real time is with or without civil power input and city
Piezoelectric voltage height；Power control 2 constantly sends digital carrier letter to switch carrier wave isolation monitoring device 1
Number, and accept to switch the monitoring result of the switch that carrier wave isolation monitoring device 1 returns.When there being civil power the most defeated
Fashionable, power control 2 supplies electricity to load equipment 6 by city and powers；When no matter civil power breaks down moment
Emergency button 4 why state, power control 2 all keeps standby, until the most again pressing emergent opening
Closing 4, it is conducting state that switch carrier wave isolation monitoring device 1 monitors emergency button 4, and is sent by signal
To power control 2, then power control 2 powers to load equipment 6 by backup battery group 3.
As the emergency lighting system of certain power plant's machine room is due to apart from office space farther out, according to automatic emergency system
System, etc. staff when being on the scene reserve battery electric energy will consume and most affect staff's operation, therefore
The emergency power supply that the embodiment of the present invention provides uses the emergency button 4 of Non-follow control, when waiting staff to arrive in
Restart emergency lighting system.
The emergency power supply that the embodiment of the present invention provides, utilizes digital carrier technology to realize the prison of emergency button signal
Survey, improve reliability and the safety of switch monitors, be widely used in industrial and mineral, petrochemical industry, machine room, storehouse etc.
Buildings etc. require higher or more special place.
As it is shown on figure 3, the embodiment of the present invention additionally provides alternative emergency power supply, including: power supply controls
Device 2, switch carrier wave isolation monitoring device 1 and backup battery group 3；Switch carrier wave isolation monitoring device 1
For monitoring the break-make situation of urban electric power switch 5, by digital carrier signal modulation and demodulation, monitoring result is sent out
Give power control 2；Power control 2, is used for monitoring civil power situation, and according to civil power situation
Judge whether to use backup battery group 3 with the monitoring result of switch；Switch carrier wave isolation monitoring device 1 and electricity
Source control device 2 is sequentially connected；Power control 2 is connected with backup battery group 3.
Wherein, switch carrier wave isolation monitoring device 1 describes in detail before, does not repeats them here.
The internal module having monitoring civil power situation of power control 2, monitoring in real time is with or without civil power input and city
Piezoelectric voltage height；Power control 2 constantly sends digital carrier letter to switch carrier wave isolation monitoring device 1
Number, and accept to switch the monitoring result of the switch that carrier wave isolation monitoring device 1 returns.When there being civil power the most defeated
Fashionable, power control 2 supplies electricity to load equipment 6 by city and powers；When no matter civil power breaks down moment
Urban electric power switch why state, power control 2 all keeps standby, until manually again pressing urban electric power switch
5, it is conducting state that switch carrier wave isolation monitoring device 1 monitors urban electric power switch 5, and sends a signal to
Power control 2, then power control 2 powers to load equipment 6 by backup battery group 3.
The emergency power supply that the embodiment of the present invention provides, utilizes digital carrier technology to realize the prison of urban electric power switch signal
Survey, improve reliability and the safety of switch monitors, and urban electric power switch and emergency button are united two into one,
Convenient installation, is widely used in the buildings such as industrial and mineral, petrochemical industry, machine room, storehouse etc. and requires higher or more special field
Institute.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than to it
Limit；Although the present invention being described in detail with reference to foregoing embodiments, the ordinary skill of this area
Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or
The most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, do not make phase
The essence answering technical scheme departs from the scope of various embodiments of the present invention technical scheme, and it all should be contained in the present invention
Claim and description scope in the middle of.
Claims (9)
1. a switch carrier wave isolation monitoring device, it is characterised in that including: carrier signal modulating unit,
Carrier signal isolated location and carrier signal demodulating unit；
The input of described carrier signal isolated location is used for connecting valve, described carrier signal isolated location
Outfan connects the first input end of described carrier signal modulating unit, and described carrier signal isolated location is used for
Exported by outfan after the signal isolation processing of input；
Second input of described carrier signal modulating unit is used for receiving digital carrier signal, and described carrier wave is believed
Number outfan of modulating unit is connected with the input of described carrier signal demodulating unit, and described carrier signal is adjusted
Unit processed, for mixing described digital carrier signal and the signal of described carrier signal isolated location output, obtains
Exported by outfan after carrier (boc) modulated signals；
Described carrier signal demodulating unit is used for demodulating switch monitors signal from described carrier (boc) modulated signals,
And exported by the outfan of described carrier signal demodulating unit.
Switch carrier wave the most according to claim 1 isolation monitoring device, it is characterised in that
Described carrier signal isolated location includes voltage isolated converter, the input of described voltage isolated converter
End is the input of described carrier signal isolated location, and the outfan of described voltage isolated converter is described load
The outfan of ripple signal isolated location；
Described carrier signal modulating unit includes a field effect transistor and a resistance, the leakage of described field effect transistor
Pole is connected with the outfan of described carrier signal isolated location, and the grid of described field effect transistor is used for receiving described
Digital carrier signal, described resistance one end is connected with the source electrode of described field effect transistor, the other end of described resistance
Ground connection；
Described carrier signal demodulating unit includes RC circuit and an audion, the input of described RC circuit
Being connected with the source electrode of described field effect transistor, the outfan of described RC circuit is connected with the base stage of described audion,
The grounded emitter of described audion, the current collection the most described carrier signal demodulating unit of described audion defeated
Go out end.
Switch carrier wave the most according to claim 2 isolation monitoring device, it is characterised in that described carrier wave
Signal isolated location also includes the controlled detecting circuit of current limliting, and the controlled detecting circuit of described current limliting is for by switch
High-tension electricity is converted to the electric current that is suitable for and carries out detection, and described current limliting controlled detecting circuit input is opened with described
Closing and connect, the outfan of the controlled detecting circuit of described current limliting is connected with the input of described voltage isolated converter.
4. an emergency power supply, it is characterised in that including: emergency button, power control, switch carry
Ripple isolation monitoring device and backup battery group；
Described switch carrier wave isolation monitoring device, for monitoring the break-make situation of described emergency button, by number
Monitoring result is sent to power control by word carrier signal modulation and demodulation；
Described power control, is used for monitoring civil power situation, and ties according to the monitoring of civil power situation and switch
Fruit judges whether to use described backup battery group；
Described emergency button, described switch carrier wave isolation monitoring device is sequentially connected with described power control；
Described power control is connected with described backup battery group.
Emergency power supply the most according to claim 4, it is characterised in that described switch carrier wave isolation monitoring
Device includes: carrier signal modulating unit, carrier signal isolated location and carrier signal demodulating unit；
The input of described carrier signal isolated location is used for connecting described emergency button, described carrier signal every
Outfan from unit connects the first input end of described carrier signal modulating unit, and described carrier signal is isolated
Unit is for exporting by outfan after the signal isolation processing of input；
Second input of described carrier signal modulating unit is used for receiving digital carrier signal, and described carrier wave is believed
Number outfan of modulating unit is connected with the input of described carrier signal demodulating unit, and described carrier signal is adjusted
Unit processed, for mixing described digital carrier signal and the signal of described carrier signal isolated location output, obtains
Exported by outfan after carrier (boc) modulated signals；
Described carrier signal demodulating unit is used for demodulating switch monitors signal from described carrier (boc) modulated signals,
And exported by the outfan of described carrier signal demodulating unit.
Emergency power supply the most according to claim 5, it is characterised in that
Described carrier signal isolated location includes voltage isolated converter, the input of described voltage isolated converter
End is the input of described carrier signal isolated location, and the outfan of described voltage isolated converter is described load
The outfan of ripple signal isolated location；
Described carrier signal modulating unit includes a field effect transistor and a resistance, the leakage of described field effect transistor
Pole is connected with the outfan of described carrier signal isolated location, and the grid of described field effect transistor is used for receiving described
The digital carrier signal that power control sends, described resistance one end is connected with the source electrode of described field effect transistor,
The other end ground connection of described resistance；
Described carrier signal demodulating unit includes RC circuit and an audion, the input of described RC circuit
Being connected with the source electrode of described field effect transistor, the outfan of described RC circuit is connected with the base stage of described audion,
The grounded emitter of described audion, the current collection the most described carrier signal demodulating unit of described audion defeated
Go out end.
7. an emergency power supply, it is characterised in that including: power control, switch carrier wave isolation monitoring
Device and backup battery group；
Described switch carrier wave isolation monitoring device, for monitoring the break-make situation of urban electric power switch, passes through digital carrier
Monitoring result is sent to power control by signal modulation and demodulation；
Described power control, is used for monitoring civil power situation, and ties according to the monitoring of civil power situation and switch
Fruit judges whether to use described backup battery group；
Described switch carrier wave isolation monitoring device is sequentially connected with described power control；Described power supply controls
Device is connected with described backup battery group.
Emergency power supply the most according to claim 7, it is characterised in that described switch carrier wave isolation monitoring
Device includes: carrier signal modulating unit, carrier signal isolated location and carrier signal demodulating unit；
The input of described carrier signal isolated location is used for connecting urban electric power switch, and the isolation of described carrier signal is single
The outfan of unit connects the first input end of described carrier signal modulating unit, described carrier signal isolated location
For being exported by outfan after the signal isolation processing of input；
Second input of described carrier signal modulating unit is used for receiving digital carrier signal, and described carrier wave is believed
Number outfan of modulating unit is connected with the input of described carrier signal demodulating unit, and described carrier signal is adjusted
Unit processed, for mixing described digital carrier signal and the signal of described carrier signal isolated location output, obtains
Exported by outfan after carrier (boc) modulated signals；
Described carrier signal demodulating unit is used for demodulating switch monitors signal from described carrier (boc) modulated signals,
And exported by the outfan of described carrier signal demodulating unit.
Emergency power supply the most according to claim 8, it is characterised in that
Described carrier signal isolated location includes voltage isolated converter and the controlled detecting circuit of current limliting, described limit
Flow controlled detecting circuit and for the electric current being converted to be suitable for by the high-tension electricity of switch and carry out detection, described current limliting
Controlled detecting circuit input is connected with described urban electric power switch, the outfan of the controlled detecting circuit of described current limliting with
The input of described voltage isolated converter connects, and the outfan of described voltage isolated converter connects described load
Ripple signal modulating unit；
Described carrier signal modulating unit includes a field effect transistor and a resistance, the leakage of described field effect transistor
Pole is connected with the outfan of described carrier signal isolated location, and the grid of described field effect transistor is used for receiving described
The digital carrier signal that power control sends, described resistance one end is connected with the source electrode of described field effect transistor,
The other end ground connection of described resistance；
Described carrier signal demodulating unit includes RC circuit and an audion, the input of described RC circuit
Being connected with the source electrode of described field effect transistor, the outfan of described RC circuit is connected with the base stage of described audion,
The grounded emitter of described audion, the current collection the most described carrier signal demodulating unit of described audion defeated
Go out end.
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| CN105929326B (en) | 2019-01-29 |
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