CN106711936A - Safety alarm device and power supply system - Google Patents
Safety alarm device and power supply system Download PDFInfo
- Publication number
- CN106711936A CN106711936A CN201710094393.0A CN201710094393A CN106711936A CN 106711936 A CN106711936 A CN 106711936A CN 201710094393 A CN201710094393 A CN 201710094393A CN 106711936 A CN106711936 A CN 106711936A
- Authority
- CN
- China
- Prior art keywords
- alarm
- coil
- transformer
- safety
- shaped iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16547—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies voltage or current in AC supplies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
Abstract
The invention provides a safety alarm device and a power supply system, which relates to the technical field of safety power supply. The safety alarm device can effectively protect an electric transmission line when faults such as overvoltage occur in a power grid, and improves the safety of the electric transmission line. The safety alarm device comprises an induction coil, an alarm chip and an alarm, wherein the induction coil is used for connecting with a primary coil of a transformer in series and generating induction signals; the alarm chip receives the induction signals, and when the induction signals exceed a preset value, the alarm chip outputs alarm starting signals; and the alarm receives the alarm starting signals and sends out alarm according to the alarm starting signals.
Description
Technical field
The present invention relates to safe power supply technical field, more particularly, to a kind of safety alarm device and electric power system.
Background technology
With the development of power technology, industrial-frequency alternating current (i.e. civil power) has spread all over each family and unit, electricity consumption
Security also becomes more and more important.
Current civil power is generally powered by two output lines, wherein one is live wire, another is zero line, live wire and zero line
Between voltage be line voltage.Line voltage between two output lines, is through transformer by the high-tension electricity from power network
Output.Generally by iron core, one-level is wrapped in primary coil and the secondary coil composition on iron core, wherein primary coil to transformer
Two ends connection power network, the two ends of secondary coil connect two output lines.Using between iron core and primary coil, secondary coil
Electromagnetic induction effect, you can the high-tension electricity of power network is converted to the line voltage of low pressure.
But, in actual power supply process, it is impossible to the work in the case where power network locates the rated voltage for carrying stabilization always is completely secured
Make, but an operated within range near rated voltage.If line voltage is higher by the 15% of rated voltage, generally just by
Regard as over-pressed phenomenon.Ageing equipment, technical failure, man-made fault, natural calamity, the power failure reason such as send a telegram here again are likely to lead
Over-pressed phenomenon is caused, overvoltage can be generated heat using electric equipment, puncture, burns out, or even cause fire, therefore it is very to take precautions against over-pressed phenomenon
It is necessary.
At present, for the safeguard procedures of power network overvoltage, overvoltage protector typically is set in ac output end, to civil power
The voltage of outlet line is monitored.When the voltage of outlet line is excessive, using the mode such as air switch or relay disconnection,
The power supply of outlet line is cut off, to realize the protection of circuit and electrical equipment.But, the sensitivity of existing overvoltage protector compared with
It is low, effectively circuit can not be protected when there is overvoltage.
The content of the invention
In view of this, it is an object of the invention to provide a kind of safety alarm device and electric power system, can be in power network
Transmission line of electricity effectively is protected during the failures such as generation overvoltage, the security of transmission line of electricity is improve.
In a first aspect, a kind of safety alarm device is the embodiment of the invention provides, including induction coil, alarm chip and report
Alert device；
The induction coil is used to be connected with the primary coil of transformer, and produces induced signal；
The alarm chip receives the induced signal, when the induced signal exceeds preset value, the alarm chip
Output alarm enabling signal；
The alarm receives the alarm enabling signal, and sends alarm according to the alarm enabling signal.
With reference in a first aspect, the embodiment of the invention provides the first possible implementation method of first aspect, wherein, institute
Stating alarm chip includes comparing unit and trigger element；
The comparing unit receives the induced signal, and the induced signal is compared with the preset value；
When the induced signal exceeds preset value, the trigger element output alarm enabling signal.
With reference in a first aspect, the embodiment of the invention provides second possible implementation method of first aspect, wherein, institute
Stating warning device includes buzzer siren.
With reference in a first aspect, the embodiment of the invention provides the third possible implementation method of first aspect, wherein, institute
Stating also includes visual alarm in warning device.
With reference in a first aspect, the embodiment of the invention provides the 4th kind of possible implementation method of first aspect, wherein, institute
State and be connected with filter capacitor between alarm chip and the induction coil.
Second aspect, the embodiment of the present invention also provides a kind of electric power system, including transformer and above-mentioned security alarm
Device；
The induction coil is connected with the primary coil of the transformer；
The secondary coil connection ac output end of the transformer.
With reference to second aspect, the first possible implementation method of second aspect is the embodiment of the invention provides, wherein, institute
The iron core for stating transformer is E shaped iron cores.
With reference to second aspect, second possible implementation method of second aspect is the embodiment of the invention provides, wherein, institute
The primary coil and secondary coil for stating transformer are respectively wound around the magnetic core at the E shaped iron cores two ends；
Or, two parts of the primary coil of the transformer are respectively wound around the magnetic core at the E shaped iron cores two ends, described
Two parts of the secondary coil of transformer are respectively wound around the magnetic core at the E shaped iron cores two ends.
With reference to second aspect, the third possible implementation method of second aspect is the embodiment of the invention provides, wherein, institute
Stating transformer also includes the tertiary coil and the 4th coil that are used to isolate clutter, and the tertiary coil and the 4th coil are twined
It is wound on the magnetic core in the middle of the E shaped iron cores.
With reference to second aspect, the 4th kind of possible implementation method of second aspect is the embodiment of the invention provides, wherein, institute
State the magnetic core in the middle of E shaped iron cores can extend along direction stretch, to adjust the tertiary coil and the 4th coil in the E
The number of turn wound on magnetic core in the middle of shaped iron core.
The embodiment of the present invention brings following beneficial effect：
In safety alarm device provided in an embodiment of the present invention, including induction coil, alarm chip and alarm.Wherein,
Induction coil is used to be connected with the primary coil of transformer, and produces the sensing letter equal with the electric current of the primary coil of transformer
Number.Alarm chip receives induced signal, when induced signal exceeds preset value, alarm chip output alarm enabling signal.Alarm
Device receives the alarm enabling signal that alarm chip sends, and can send alarm according to the alarm enabling signal.The present invention is implemented
The safety alarm device that example is provided, generates the sensing synchronous with the size of current of the primary coil of transformer and believes using induction coil
Number, and using the size of current (i.e. the size of current of the primary coil of transformer) of the induction coil as the failures such as power network overvoltage
Alert if, therefore, it is possible to improve the sensitivity of circuit protection, more efficient protection transmission line of electricity, so as to improve transmission line of electricity
Security.
Other features and advantages of the present invention will be illustrated in the following description, also, the partly change from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages are in specification, claims
And specifically noted structure is realized and obtained in accompanying drawing.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate more clearly of the specific embodiment of the invention or technical scheme of the prior art, below will be to specific
The accompanying drawing to be used needed for implementation method or description of the prior art is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before creative work is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the safety alarm device that the embodiment of the present invention one is provided；
Fig. 2 is the schematic diagram of alarm chip in the safety alarm device that the embodiment of the present invention one is provided；
Fig. 3 is the schematic diagram of the electric power system that the embodiment of the present invention two is provided；
Fig. 4 is the schematic diagram of transformer in the embodiment of the present invention two；
Fig. 5 is another schematic diagram of transformer in the embodiment of the present invention two.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Technical scheme be clearly and completely described, it is clear that described embodiment is a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
At present, for the safeguard procedures of power network overvoltage, overvoltage protector typically is set in ac output end, to civil power
The voltage of outlet line is monitored.When the voltage of outlet line is excessive, using the mode such as air switch or relay disconnection,
The power supply of outlet line is cut off, to realize the protection of circuit and electrical equipment.But, the sensitivity of existing overvoltage protector compared with
It is low, effectively circuit can not be protected when there is overvoltage.
Based on this, it is an object of the invention to provide a kind of safety alarm device and electric power system, can be sent out in power network
Transmission line of electricity effectively is protected during the failures such as raw overvoltage, so as to improve the security of transmission line of electricity.
Embodiment one：
The embodiment of the present invention provides a kind of safety alarm device, can be applied to the power supply scene such as family, office, factory.Such as
Shown in Fig. 1, the safety alarm device includes induction coil L0, alarm chip and alarm.
Induction coil L0 is used to be connected with the primary coil of transformer, so the electric current of induction coil L0 is first with transformer
The size of current of level coil is synchronous, and using the electric current of induction coil L0 as induced signal.
Alarm chip receives induced signal, when induced signal exceeds preset value, alarm chip output alarm enabling signal.
Alarm receives the alarm enabling signal that alarm chip sends, and sends alarm according to alarm enabling signal.
Safety alarm device provided in an embodiment of the present invention, using induction coil L0 generations and the primary coil of transformer
The synchronous induced signal of size of current, and (i.e. the electric current of the primary coil of transformer is big by the size of current of induction coil L0
It is small) as the alert if of the failures such as power network overvoltage, therefore, it is possible to improve the sensitivity of circuit protection, more efficient protection transmission of electricity
Circuit, so as to improve the security of transmission line of electricity.
In the present embodiment, the two ends of induction coil L0 connect two inputs of alarm chip respectively, connect alarm chip
Receive the induced signal that induction chip is produced.Also, filter capacitor C0 is connected between one end of induction coil L0 and alarm chip,
During preventing the amplitude of induced signal excessive, alarm chip is caused damage.
The warning device that the embodiment of the present invention is used, is a kind of consequence to prevent or preventing caused by the generation of certain event,
The electronic product for sending alarm to remind or warn user to take the precautionary measures.
Used as a preferred scheme, the warning device in the embodiment of the present invention includes buzzer siren.Work as warning device
When receiving the alarm enabling signal that alarm chip sends, buzzer siren will send alarm sound, point out user to take strick precaution
Measure.
Further, visual alarm is also included in the warning device in the embodiment of the present invention.When warning device receives report
During the alarm enabling signal that alert chip sends, buzzer siren will send alarm light, point out user to take the precautionary measures.
As shown in Fig. 2 the alarm chip of the present embodiment includes comparing unit and trigger element.Comparing unit receives sensing
Signal, and induced signal is compared with preset value.When induced signal exceeds preset value, trigger element output alarm starts
Signal.
As a preferred scheme, multistable trigger is provided with trigger element, multistable trigger is also referred to as n stable states
Trigger, is the further development of bistable state tentaculum.If input and remaining output end at different levels of n every one-level of amplifying stage
Between have dc-couple, then n stable state is can obtain under certain bar, and only have one-level to turn in each stable state, and its
Remaining is turned off.In nonbinary counter circuit, the quick sound under various different conditions can be realized using polymorphic trigger
Should, thus than flip and flop generator response speed faster.
By using with highly sensitive comparing unit and trigger element, and in trigger element in the embodiment of the present invention
Middle setting multistable trigger, enables alarm chip to be responded within 0.1 second, is opened so as to send alarm within the extremely short time
Dynamic signal, effectively protection power network and transformer.
Safety alarm device provided in an embodiment of the present invention, using induction coil L0 generations and the primary coil of transformer
The synchronous induced signal of size of current, and by the size of current of induction coil L0, that is, by the primary coil of transformer
Size of current as the failures such as power network overvoltage alert if, therefore, it is possible to improve the sensitivity of circuit protection, more efficient guarantor
Shield transmission line of electricity, so as to improve the security of transmission line of electricity.
Embodiment two：
As shown in figure 3, the embodiment of the present invention also provides a kind of electric power system, including transformer TB and above-described embodiment one
The safety alarm device of offer.Wherein, induction coil L0 connects with the primary coil L1 of transformer TB, the secondary wire of transformer TB
Circle L2 connection ac output ends.The power end of alarm chip is connected to the two ends of primary coil L1, and in primary coil
Between wherein one end of L1 and alarm chip, the filter circuit of filter resistance R1 and filter capacitor C1 compositions is provided with.
Used as a preferred scheme, the iron core of the transformer TB in the embodiment of the present invention is E shaped iron cores.As shown in figure 4, E
Shaped iron core is made up of a horizontal magnetic core and three longitudinal magnetic cores, and one is each provided with the two ends and centre position of horizontal magnetic core
Longitudinal magnetic core.
In the present embodiment, the primary coil L1 and secondary coil L2 of transformer TB are respectively wound around the magnetic at E shaped iron cores two ends
Core.Figure 4, it is seen that the primary coil L1 of transformer TB is wrapped on the magnetic core in left side, the secondary of transformer TB
Coil L2 is wrapped on the magnetic core on right side.
As shown in figure 5, in another embodiment, two parts of the primary coil L1 of this transformer TB are respectively wound around
The magnetic core at E shaped iron cores two ends, two parts of the secondary coil L2 of transformer TB are respectively wound around the magnetic core at E shaped iron cores two ends.
It is further that the transformer TB in the embodiment of the present invention also includes the tertiary coil L3 for isolating clutter and the
Four coil L4, and tertiary coil L3 and the 4th coil L4 are wrapped in the magnetic core in the middle of E shaped iron cores.As shown in Figure 3 and Figure 4, the 3rd
One end of coil L3 and the 4th coil L4 are grounded respectively, and filter capacitor C2 and current limliting electricity are connected between the 4th coil L4 and ground
Resistance R2.
By setting tertiary coil L3 and the 4th coil L4, primary coil L1 first enters with tertiary coil L3, the 4th coil L4
Row electromagnetic induction, then electromagnetic induction is carried out by tertiary coil L3, the 4th coil L4, so that indirectly by electric energy from primary coil L1
Transmit to secondary coil L2.The clutter that can so isolate between primary coil L1 and secondary coil L2, makes the primary of grid side
The clutter produced on coil L1, is unlikely to propagate to secondary coil L2, to ensure the stabilization of ac output end.
In the present embodiment, the magnetic core in the middle of E shaped iron cores can extend along direction and stretch, to adjust tertiary coil L3 and the 4th
The number of turn that coil L4 winds on the magnetic core in the middle of E shaped iron cores.By changing tertiary coil L3 and the 4th coil L4 in centre
Effective turn on magnetic core, can adjust the voltage ratio of primary coil L1 and secondary coil L2, and then adjust ac output end
Output voltage.
The collapsing length of the magnetic core in the middle of E shaped iron cores, can be adjusted manually, it is also possible to be adjusted automatically by setting drive mechanism
Section.
In electric power system provided in an embodiment of the present invention, also including the first relay J1 and the second relay J2.First after
Electrical equipment J1 can be used to connect the protection device of ac output end, such as the output end of protection device is connected into the first relay J1's
Control coil.The output end of the first relay J1 is connected with the control coil of the second relay J2, the output of the second relay J2
Connected with the primary coil L1 of transformer TB at end.
As a preferred scheme, when the first relay J1 is closed type relay, i.e. control coil no power first after
The output of electrical equipment J1 is in closure state.Meanwhile, when the second relay J2 is normal-open type relay, i.e. control coil no power
The output end of the first relay J1 is off.
In the case of electric power system normal power supply, the control coil no power of the first relay J1, the first relay J1
Output in closure state, therefore control power supply can be supplied by the first relay J1 to the control coil of the second relay J2
Electricity.The control coil of the second relay J2 in the case of energization, its output in closure state, to maintain transformer TB's
Primary coil L1L1 continued powers.
When protection device exports power-off signal, the control coil of the first relay J1 is powered, and makes the first relay J1's
Output end disconnects.Because the output end of the first relay J1 disconnects, therefore the control coil of the second relay J2 is powered off, and makes second
The output end of relay J2 disconnects, so that the connection of power network and the primary coil L1 of transformer TB is cut off, to cut off electric power system
Power supply, realize the protection of supply line.
In the present embodiment, the first relay J1 uses closed type relay, the second relay J2 to use normal-open type relay
Have further the advantage that：In actual electric power system, can be in the output end of the first relay J1 with the second relay J2's
The relay of multiple difference purposes of being connected between control coil, such as the relay of relay, overvoltage protection for arc protection
Device, and for the relay of short-circuit protection.These relays also all use closed type relay, and each relay is defeated
Go out control coil of the end all with the second relay J2 connect, then wherein the disconnection of any one relay when, can make second after
The control coil power-off of electrical equipment J2, so as to cut off the power supply of power system.
The electric power system that the embodiment of the present invention two is provided, the safety alarm device provided with above-described embodiment one, with phase
Same technical characteristic, so can also solve identical technical problem, reaches identical technique effect.
In addition, in the description of the embodiment of the present invention, unless otherwise clearly defined and limited, term " installation ", " phase
Company ", " connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can
Being to mechanically connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
Two connections of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", D score, "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify describe, rather than indicate imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying phase
To importance.
Finally it should be noted that：Embodiment described above, specific embodiment only of the invention, is used to illustrate the present invention
Technical scheme, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those within the art that：Any one skilled in the art
The invention discloses technical scope in, it can still modify to the technical scheme described in previous embodiment or can be light
Change is readily conceivable that, or equivalent is carried out to which part technical characteristic；And these modifications, change or replacement, do not make
The essence of appropriate technical solution departs from the spirit and scope of embodiment of the present invention technical scheme, should all cover in protection of the invention
Within the scope of.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of safety alarm device, it is characterised in that including induction coil, alarm chip and alarm；
The induction coil is used to be connected with the primary coil of transformer, and produces induced signal；
The alarm chip receives the induced signal, when the induced signal exceeds preset value, the alarm chip output
Alarm enabling signal；
The alarm receives the alarm enabling signal, and sends alarm according to the alarm enabling signal.
2. safety alarm device according to claim 1, it is characterised in that the alarm chip include comparing unit and
Trigger element；
The comparing unit receives the induced signal, and the induced signal is compared with the preset value；
When the induced signal exceeds preset value, the trigger element output alarm enabling signal.
3. safety alarm device according to claim 1, it is characterised in that the warning device includes that buzzing is alarmed
Device.
4. safety alarm device according to claim 3, it is characterised in that also include light warning in the warning device
Device.
5. safety alarm device according to claim 4, it is characterised in that the alarm chip and the induction coil it
Between be connected with filter capacitor.
6. a kind of electric power system, it is characterised in that the safety report including transformer and as described in any one of claim 1 to 5
Alarm device；
The induction coil is connected with the primary coil of the transformer；
The secondary coil connection ac output end of the transformer.
7. electric power system according to claim 6, it is characterised in that the iron core of the transformer is E shaped iron cores.
8. electric power system according to claim 7, it is characterised in that the primary coil and secondary coil of the transformer point
The magnetic core at the E shaped iron cores two ends is not wrapped in；
Or, two parts of the primary coil of the transformer are respectively wound around the magnetic core at the E shaped iron cores two ends, the transformation
Two parts of the secondary coil of device are respectively wound around the magnetic core at the E shaped iron cores two ends.
9. electric power system according to claim 8, it is characterised in that the transformer also include for isolate clutter the
Three-winding and the 4th coil, and the tertiary coil and the 4th coil are wrapped in the magnetic core in the middle of the E shaped iron cores.
10. electric power system according to claim 9, it is characterised in that the magnetic core in the middle of the E shaped iron cores can be extended along
Direction is stretched, to adjust the number of turn that the tertiary coil and the 4th coil wind on the magnetic core in the middle of the E shaped iron cores.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094393.0A CN106711936A (en) | 2017-02-22 | 2017-02-22 | Safety alarm device and power supply system |
| PCT/CN2017/088122 WO2018152986A1 (en) | 2017-02-22 | 2017-06-13 | Safety alarm apparatus and power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710094393.0A CN106711936A (en) | 2017-02-22 | 2017-02-22 | Safety alarm device and power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106711936A true CN106711936A (en) | 2017-05-24 |
Family
ID=58917330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710094393.0A Pending CN106711936A (en) | 2017-02-22 | 2017-02-22 | Safety alarm device and power supply system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106711936A (en) |
| WO (1) | WO2018152986A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107068370A (en) * | 2017-06-22 | 2017-08-18 | 中领世能（天津）科技有限公司 | E types transformer and safety alarm device |
| CN107086554A (en) * | 2017-05-26 | 2017-08-22 | 中领世能（天津）科技有限公司 | Electric power system and its multi-stage protection device |
| WO2018152986A1 (en) * | 2017-02-22 | 2018-08-30 | 中领世能（天津）科技有限公司 | Safety alarm apparatus and power supply system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4996517A (en) * | 1989-04-06 | 1991-02-26 | Assist, Inc. | Household alarm system |
| CN201867945U (en) * | 2010-12-09 | 2011-06-15 | 曾梓桐 | Alarm |
| CN204243728U (en) * | 2014-12-13 | 2015-04-01 | 广发电器集团有限公司 | Transformer overload protection warning device |
| CN104597313A (en) * | 2015-02-06 | 2015-05-06 | 王岩 | Induction device and electric power system |
| CN206432692U (en) * | 2017-02-22 | 2017-08-22 | 中领世能（天津）科技有限公司 | Safety alarm device and electric power system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711936A (en) * | 2017-02-22 | 2017-05-24 | 中领世能（天津）科技有限公司 | Safety alarm device and power supply system |
-
2017
- 2017-02-22 CN CN201710094393.0A patent/CN106711936A/en active Pending
- 2017-06-13 WO PCT/CN2017/088122 patent/WO2018152986A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4996517A (en) * | 1989-04-06 | 1991-02-26 | Assist, Inc. | Household alarm system |
| CN201867945U (en) * | 2010-12-09 | 2011-06-15 | 曾梓桐 | Alarm |
| CN204243728U (en) * | 2014-12-13 | 2015-04-01 | 广发电器集团有限公司 | Transformer overload protection warning device |
| CN104597313A (en) * | 2015-02-06 | 2015-05-06 | 王岩 | Induction device and electric power system |
| CN206432692U (en) * | 2017-02-22 | 2017-08-22 | 中领世能（天津）科技有限公司 | Safety alarm device and electric power system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018152986A1 (en) * | 2017-02-22 | 2018-08-30 | 中领世能（天津）科技有限公司 | Safety alarm apparatus and power supply system |
| CN107086554A (en) * | 2017-05-26 | 2017-08-22 | 中领世能（天津）科技有限公司 | Electric power system and its multi-stage protection device |
| CN107068370A (en) * | 2017-06-22 | 2017-08-18 | 中领世能（天津）科技有限公司 | E types transformer and safety alarm device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018152986A1 (en) | 2018-08-30 |
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