CN109462275A - Surface water monitors power supply system power-off intelligent alarm system automatically - Google Patents
Surface water monitors power supply system power-off intelligent alarm system automatically Download PDFInfo
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- CN109462275A CN109462275A CN201811631397.9A CN201811631397A CN109462275A CN 109462275 A CN109462275 A CN 109462275A CN 201811631397 A CN201811631397 A CN 201811631397A CN 109462275 A CN109462275 A CN 109462275A
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- 239000002352 surface water Substances 0.000 title claims abstract description 15
- 241000876443 Varanus salvator Species 0.000 title claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 11
- 239000011521 glass Substances 0.000 claims abstract description 4
- 239000003990 capacitor Substances 0.000 claims description 42
- 230000005669 field effect Effects 0.000 claims description 22
- 210000000031 electric organ Anatomy 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 239000003973 paint Substances 0.000 claims description 3
- 239000005871 repellent Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- H02J9/06—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 with automatic change-over, e.g. UPS systems
- H02J9/061—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 with automatic change-over, e.g. UPS systems for DC powered loads
-
- 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
- H02J9/06—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 with automatic change-over, e.g. UPS systems
- H02J9/08—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 with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to source of early warning technical field, especially surface water to monitor power supply system power-off intelligent alarm system automatically；It includes discharge of river meter, the discharge of river meter is mounted on bracket left end, cement tube is perfused between the bottom periphery of the bracket and riverbank, the bracket left part also welds a root post, the column bottom end is installed by hydroelectric generator, the cradle top is equipped with lithium battery, booster, power change-over switch by bolt and stirrup, is stained with charger and power failure alarm device by glass cement on the shell of the lithium battery；Whole device is fixed on riverbank by cement tube and bracket, equipped with two power supplys of alternating current and hydroelectric generator, it is realized and is automatically switched by power change-over switch, as long as alternating current can be transformed into generating power by water current once powering off, and there is lithium battery as power storage, it can continue to record hydrographic data in the certain time that disaster occurs, there is certain significance of scientific research.
Description
Technical field
The present invention relates to source of early warning technical field, especially surface water to monitor power supply system power-off intelligent alarm system automatically
System.
Background technique
Surface water automated monitor, such as DR-103H discharge of river meter can be used for the water flow prison in the rivers and lakes waters He Haideng
It surveys.Due to such equipment all weather operations, therefore generally do not allow to power off, unless irresistible objective condition must power off, example
Such as flood, earthquake, tsunami natural calamity.Then the prior art loses the chance that monitoring disaster carrys out interim water flow, separately
It is outside that natural calamity causes due to many times powering off, the personnel of monitoring center may not necessarily learn power-off in time, in order to
Subsequent maintenance, the prior art also lack alarm mechanism.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides one kind can still adhere to work one after losing mains-supplied
The surface water fixed time monitors power supply system power-off intelligent alarm system automatically.
The technical solution of the present invention is as follows:
Surface water monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: it includes discharge of river meter, water
Stream electric organ, booster, power change-over switch, charger, lithium battery and power failure alarm device, the discharge of river meter are mounted on
The left end of one T font bracket, the bottom end of the bracket are inserted on riverbank, are filled between the bottom periphery of the bracket and riverbank
It is marked with cement tube, to securely fix entire bracket, the bracket left part also welds a root post, which installs water
Electric organ is flowed, the cradle top is equipped with lithium battery, booster, power change-over switch, the lithium electricity by bolt and stirrup
Charger and power failure alarm device are stained with by glass cement on the shell in pond；
The power input of the power failure alarm device and the first power input of power change-over switch connect jointly
Alternating current, the second source input terminal of the power change-over switch connect 220 volts of output ends of booster, the liter by electric wire
12 volts of input terminals of depressor connect the power output end of hydroelectric generator by electric wire, and the power supply of the power change-over switch is defeated
Outlet connects the power input of charger by electric wire, and the power output end of the charger connects lithium battery by charging cable
Power input, the power output end of the lithium battery passes through the power input that electric wire connects discharge of river meter.
Specifically, the booster, power change-over switch, charger, lithium battery and power failure alarm device appearance are coated with
There is one layer of water-repellent paint, their power supply junction is coated by marine glue and sealed, and prevents rainfall etc. from causing short circuit to it.
Specifically, the hydroelectric generator is fine bourn electric organ, rated generation voltage is 12 volts.
Specifically, the power failure alarm device is wireless terminal formula power-off alarm, convenient for passing through the easy ways such as short message
Notify administrative staff.
Specifically, the bracket bottom end is welded with earth anchor, whole device is further reinforced.
Specifically, the booster includes 12 volts of input terminals, chip, transformer and 220 volts of output ends, 12 volts defeated
Enter end connection fuse first end, fuse second end is separately connected the 15th stitch, the 13rd stitch and the transformer of chip
Second end, the first stitch of chip is separately connected the first end of second resistance and the first end of 3rd resistor, second resistance
Second end connects the first end of first resistor, and the second end of 3rd resistor is separately connected second end, the first capacitor of the 4th resistance
Second end, the second end of the 6th resistance, the second end of the second capacitor, the second end of the 8th resistance, chip the 12nd stitch
And ground connection, first end, the first end of first capacitor, the first end of the 6th resistance, the first end of the second capacitor, of the 4th resistance
The first end of eight resistance be separately connected the second stitch of chip, the 16th stitch of chip, the 6th stitch of chip, the 5th stitch of chip and
Third capacitor second end is connected with the 5th resistance, the second capacitor between the first end of the 4th resistance and the first end of first capacitor
First end and chip the 7th stitch between connect the 7th resistance, third capacitor first end connection chip nine kinds of needles foot,
The second end of first resistor is separately connected the anode of the 4th capacitor and the first end of rectifier bridge, and the other end of the 4th capacitor is grounded,
4th end of the second end connection transformer of rectifier bridge, the third end ground connection of rectifier bridge, the 4th end of rectifier bridge connects transformer
The 5th end, the 11st stitch of chip connects the first end of the 9th resistance, and the second end of the 9th resistance connects the first MOS field effect transistor
Grid, the source electrode of the first MOS field effect transistor is grounded and connects respectively the source electrode of the second MOS field effect transistor, and the drain electrode of the first MOS field effect transistor, which connects, to be become
The first end of depressor, the 14th end of chip connect the first end of the tenth resistance, and the second end of the tenth resistance connects second effect
The grid of pipe, the 5th end of the drain electrode connection transformer of the second MOS field effect transistor, the 4th end of transformer and the 5th end are the 220 of circuit
Volt output end.
Further, the fuse type is 30A, and first resistor resistance value is 390k ohm, and second resistance resistance value is
200k ohm, 3rd resistor, the 4th resistance, the 5th resistance are 5k ohm, and first capacitor specification is 0.1 μ, the 6th resistance
Resistance value is 36k ohm, and the second capacitor specification is 0.01 μ, and the 7th resistance is 47 ohm, and third capacitor specification is 1000P, the
Eight resistances are 20k ohm, and chip is the IC chip that model is CW3525A, and the 9th resistance is 100 ohm, the tenth electricity
Hindering resistance value is 100 ohm, and the first MOS field effect transistor and the second MOS field effect transistor are all made of 2sk851MOS pipe, and the 4th capacitor specification is 10 μ, whole
Stream bridge gauge lattice are 400V 0.5A.
The invention has the benefit that whole device is fixed on riverbank by cement tube and bracket, it is equipped with alternating current and water
Flow two power supplys of electric organ, by power change-over switch realize automatically switch, as long as alternating current once power off can be transformed into water flow hair
Electricity, and have lithium battery as power storage, it can continue to record hydrographic data in the certain time that disaster occurs, have one
Fixed significance of scientific research.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the circuit diagram of booster.
In figure, 1, earth anchor；2, cement tube；3, bracket；4, discharge of river meter；5, column；6, hydroelectric generator；7, it boosts
Device；8, power change-over switch；9, power failure alarm device；10, lithium battery；11, charger.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing:
As shown in Figure 1, surface water monitors power supply system power-off intelligent alarm system automatically, it includes discharge of river meter 4, water
Flow electric organ 6, booster 7, power change-over switch 8, charger 11, lithium battery 10 and power failure alarm device 9, the discharge of river
Meter 4 is mounted on the left end of a T font bracket 3, and the bottom end of the bracket 3 is inserted on riverbank, the bottom periphery of the bracket 3
Cement tube 2 is perfused between riverbank, 3 left part of bracket also welds a root post 5, which installs generating power by water current
Device 6 is equipped with lithium battery 10, booster 7, power change-over switch 8, the lithium electricity by bolt and stirrup at the top of the bracket 3
Charger 11 and power failure alarm device 9 are stained with by glass cement on the shell in pond 10；
The power input of the power failure alarm device 9 and the first power input of power change-over switch 8 connect jointly
Alternating current is connect, the second source input terminal of the power change-over switch 8 connects 220 volts of output ends of booster 7, institute by electric wire
12 volts of input terminals for stating booster 7 connect the power output end of hydroelectric generator 6, the power change-over switch 8 by electric wire
Power output end the power input of charger 11 is connected by electric wire, the power output end of the charger 11 passes through charging
Line connects the power input of lithium battery 10, and the power output end of the lithium battery 10 connects discharge of river meter 4 by electric wire
Power input.
The booster 7, power change-over switch 8, charger 11, lithium battery 10 and 9 appearance of power failure alarm device are coated with
There is one layer of water-repellent paint.
The hydroelectric generator 6 is fine bourn electric organ, and rated generation voltage is 12 volts.
The power failure alarm device 9 is wireless terminal formula power-off alarm.
3 bottom end of bracket is welded with earth anchor 1.
As shown in Fig. 2, the booster 7 includes that 12 volts of input terminals (+12V), chip IC, transformer T and 220 volts are defeated
Outlet, 12 volts of input terminals connect fuse FU first ends, and fuse second end is separately connected the 15th stitch of chip IC, the
The second end of 13 stitch and transformer T, the first stitch of chip IC are separately connected the first end and third electricity of second resistance R2
Hinder the first end of R3, the first end of the second end connection first resistor R1 of second resistance R2, the second end difference of 3rd resistor R3
Connect the second end of the 4th resistance R4, the second end of first capacitor C1, the second end of the 6th resistance R6, the second capacitor C2 second
End, the second end of the 8th resistance R8, the 12nd stitch of chip IC and ground connection, the first end of the 4th resistance R4, first capacitor C1
First end, the first end of the 6th resistance R6, the first end of the second capacitor C2, the first end of the 8th resistance R8 be separately connected chip
The second stitch of IC, the 16th stitch of chip IC, the 6th stitch of chip IC, the 5th stitch of chip IC and third capacitor C3 second end,
The 5th resistance R5, the first end of the second capacitor C2 are connected between the first end of 4th resistance R4 and the first end of first capacitor C1
The 7th resistance R7 is connected between the 7th stitch of chip IC, the first end of third capacitor C3 connects the nine kinds of needles foot of chip IC,
The second end of first resistor R1 is separately connected the anode of the 4th capacitor C4 and the first end of rectifier bridge UR, and the 4th capacitor C4's is another
End ground connection, the 4th end of the second end connection transformer T of rectifier bridge UR, the third end ground connection of rectifier bridge UR, the of rectifier bridge UR
Four ends connect the 5th end of transformer T, and the 11st stitch of chip IC connects the first end of the 9th resistance R9, the 9th resistance R9's
Second end connects the grid of the first MOS field effect transistor VT1, and the source electrode of the first MOS field effect transistor VT1 is grounded and connects respectively the second MOS field effect transistor VT2
Source electrode, the first end of the drain electrode connection transformer T of the first MOS field effect transistor VT1, the 14th end of chip IC connects the tenth resistance R10
First end, the second end of the tenth resistance R10 connects the grid of the second MOS field effect transistor VT2, and the drain electrode of the second MOS field effect transistor VT2, which connects, to be become
The 5th end of depressor T, the 4th end of transformer T and the 5th end are 220 volts of output ends of circuit.
The fuse FU specification is 30A, and first resistor R1 resistance value is 390k ohm, and second resistance R2 resistance value is the Europe 200k
Nurse, 3rd resistor R3, the 4th resistance R4, the 5th resistance R5 resistance value are 5k ohm, and first capacitor C1 specification is 0.1 μ, the 6th electricity
Hindering R6 resistance value is 36k ohm, and the second capacitor C2 specification is 0.01 μ, and the 7th resistance R7 resistance value is 47 ohm, third capacitor C3 specification
For 1000P, the 8th resistance R8 resistance value is 20k ohm, and chip IC is the IC chip that model is CW3525A, the 9th resistance R9 resistance value
It is 100 ohm, the tenth resistance R10 resistance value is 100 ohm, and the first MOS field effect transistor VT1 and the second MOS field effect transistor VT2 are all made of
2sk851MOS pipe, the 4th capacitor C4 specification are 10 μ, and rectifier bridge UR specification is 400V 0.5A.
In the present embodiment:
The DR-103H discharge of river meter that discharge of river meter 4 is manufactured using Hebei De Run Hou Tian instrument manufacturing Co., Ltd；
Hydroelectric generator 6 is filled using VIDN (micro- electricity) generating power by water current of Ningbo City Zhong Can Electronic Science and Technology Co., Ltd. manufacture
It sets；
Power change-over switch 8 is opened using the BYQ1 series double power-supply automatic transferring of Shanghai Bo Yu Electric Applicance Co., Ltd manufacture
It closes；
Charger 11 is using the safe and sound lithium battery special-purpose water-proof charger manufactured with Science and Technology Ltd. in Shenzhen；
Lithium battery 10 is using the safe and sound dedicated lithium battery in open air manufactured with Science and Technology Ltd. in Shenzhen；
Power failure alarm device 9 interacts GSM power alarm using the Yinke of Shenzhen's Yinke interaction Science and Technology Ltd. manufacture
Device.
The above embodiments and description only illustrate the principle of the present invention and most preferred embodiment, is not departing from this
Under the premise of spirit and range, various changes and improvements may be made to the invention, these changes and improvements both fall within requirement and protect
In the scope of the invention of shield.
Claims (7)
1. surface water monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: it includes discharge of river meter, water flow
Electric organ, booster, power change-over switch, charger, lithium battery and power failure alarm device, the discharge of river meter are mounted on one
The left end of a T font bracket, the bottom end of the bracket are inserted on riverbank, are perfused between the bottom periphery of the bracket and riverbank
There is cement tube, to securely fix entire bracket, the bracket left part also welds a root post, which installs water flow
Electric organ, the cradle top are equipped with lithium battery, booster, power change-over switch, the lithium battery by bolt and stirrup
Shell on charger and power failure alarm device be stained with by glass cement；
The power input of the power failure alarm device and the first power input of power change-over switch connect alternating current jointly,
The second source input terminal of the power change-over switch connects 220 volts of output ends of booster, the booster by electric wire
12 volts of input terminals by electric wire connect hydroelectric generator power output end, the power output end of the power change-over switch
The power input of charger is connected by electric wire, the power output end of the charger connects the electricity of lithium battery by charging cable
Source input terminal, the power output end of the lithium battery connect the power input of discharge of river meter by electric wire.
2. surface water according to claim 1 monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: institute
It states booster, power change-over switch, charger, lithium battery and power failure alarm device appearance and is coated with one layer of water-repellent paint, it
Power supply junction pass through marine glue coating sealing.
3. surface water according to claim 2 monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: institute
Stating hydroelectric generator is fine bourn electric organ.
4. surface water according to claim 3 monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: institute
Stating power failure alarm device is wireless terminal formula power-off alarm.
5. surface water according to claim 4 monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: institute
It states bracket bottom end and is welded with earth anchor.
6. surface water according to claim 5 monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: institute
Stating booster includes 12 volts of input terminals, chip, transformer and 220 volts of output ends, 12 volts of input terminals connection fuse the
One end, fuse second end are separately connected the second end of the 15th stitch of chip, the 13rd stitch and transformer, and the of chip
One stitch is separately connected the first end of second resistance and the first end of 3rd resistor, and the second end of second resistance connects first resistor
First end, the second end of 3rd resistor is separately connected the second end of the 4th resistance, the second end of first capacitor, the 6th resistance
Second end, the second end of the second capacitor, the second end of the 8th resistance, the 12nd stitch of chip and ground connection, the of the 4th resistance
One end, the first end of first capacitor, the first end of the 6th resistance, the first end of the second capacitor, the first end of the 8th resistance difference
The second stitch of chip, the 16th stitch of chip, the 6th stitch of chip, the 5th stitch of chip and third capacitor second end are connected, the
It is connected with the 5th resistance between the first end of four resistance and the first end of first capacitor, the of the first end of the second capacitor and chip
The 7th resistance, the nine kinds of needles foot of the first end connection chip of third capacitor, the second end point of first resistor are connected between seven stitch
Not Lian Jie the 4th capacitor anode and rectifier bridge first end, the 4th capacitor the other end ground connection, rectifier bridge second end connection
4th end of transformer, the third end ground connection of rectifier bridge, the 5th end of the 4th end connection transformer of rectifier bridge, the tenth of chip the
One stitch connects the first end of the 9th resistance, and the second end of the 9th resistance connects the grid of the first MOS field effect transistor, the first MOS field effect transistor
Source electrode is grounded and connects respectively the source electrode of the second MOS field effect transistor, and the drain electrode of the first MOS field effect transistor connects the first end of transformer, chip
14th end connects the first end of the tenth resistance, and the second end of the tenth resistance connects the grid of the second MOS field effect transistor, the second MOS field effect transistor
Drain electrode connection transformer the 5th end, the 4th end of transformer and the 5th end are 220 volts of output ends of circuit.
7. surface water according to claim 6 monitors power supply system power-off intelligent alarm system automatically, it is characterised in that: institute
Stating fuse type is 30A, and first resistor resistance value is 390k ohm, and second resistance resistance value is 200k ohm, 3rd resistor, the 4th
Resistance, the 5th resistance are 5k ohm, and first capacitor specification is 0.1 μ, and the 6th resistance is 36k ohm, the second capacitor
Specification is 0.01 μ, and the 7th resistance is 47 ohm, and third capacitor specification is 1000P, and the 8th resistance is 20k ohm, core
Piece is the IC chip that model is CW3525A, and the 9th resistance is 100 ohm, and the tenth resistance is 100 ohm, first
Effect pipe and the second MOS field effect transistor are all made of 2sk851MOS pipe, and the 4th capacitor specification is 10 μ, and rectifier bridge specification is 400V 0.5A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631397.9A CN109462275A (en) | 2018-12-29 | 2018-12-29 | Surface water monitors power supply system power-off intelligent alarm system automatically |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631397.9A CN109462275A (en) | 2018-12-29 | 2018-12-29 | Surface water monitors power supply system power-off intelligent alarm system automatically |
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| Publication Number | Publication Date |
|---|---|
| CN109462275A true CN109462275A (en) | 2019-03-12 |
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| CN201811631397.9A Pending CN109462275A (en) | 2018-12-29 | 2018-12-29 | Surface water monitors power supply system power-off intelligent alarm system automatically |
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|---|---|---|---|---|
| CN102142688A (en) * | 2010-01-29 | 2011-08-03 | 西门子公司 | Electric power grid connecting system as well as electric power transmission system and method |
| US20130057064A1 (en) * | 2011-09-06 | 2013-03-07 | Hon Hai Precision Industry Co., Ltd. | Power supply system for air conditioner of car |
| CN206041629U (en) * | 2016-09-19 | 2017-03-22 | 南方电网科学研究院有限责任公司 | Distribution transformer load recorder with external electric power storage and energy storage equipment |
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