CN108063496B - Electric field energy collecting device and passive wireless sensor thereof - Google Patents
Electric field energy collecting device and passive wireless sensor thereof Download PDFInfo
- Publication number
- CN108063496B CN108063496B CN201610976994.XA CN201610976994A CN108063496B CN 108063496 B CN108063496 B CN 108063496B CN 201610976994 A CN201610976994 A CN 201610976994A CN 108063496 B CN108063496 B CN 108063496B
- Authority
- CN
- China
- Prior art keywords
- circuit
- energy storage
- electric field
- capacitor
- voltage
- 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.)
- Active
Links
- 230000005684 electric field Effects 0.000 title claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 49
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 30
- 238000001514 detection method Methods 0.000 claims description 21
- 230000003068 static effect Effects 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000003306 harvesting Methods 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- H02J15/00—Systems for storing electric energy
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses an electric field energy collecting device which comprises a conductive device sleeved outside a moving contact and a fixed contact of a switch loop, wherein the conductive device and the moving contact are respectively connected with the input end of a rectifying circuit, the output end of the rectifying circuit is connected with the input end of an energy storage circuit, the output end of the energy storage circuit is connected with the input end of a voltage conversion circuit, and the output end of the voltage conversion circuit is connected with a load. In addition, the invention also discloses a passive wireless sensor. By adopting the invention, the leakage current is prevented from losing, and the utilization rate of the electric field energy is improved.
Description
Technical Field
The invention relates to an energy collecting device, in particular to an electric field energy collecting device and a passive wireless sensor thereof.
Background
In recent years, with the increasing economic growth speed, power systems are developed towards large capacity, high voltage and intellectualization, and the safe and efficient operation of the power systems is closely related to the healthy development of social economy and the stability of people's life. In an electric power system, a switch cabinet plays an important role in power transmission and distribution, and the safety and reliability of the switch cabinet are of high concern.
In both high-voltage switch cabinets and low-voltage switch cabinets, because of insulation damage of electric appliance circuits or corresponding matching equipment, the electric leakage phenomenon can occur to conductors close to the insulation damage under certain conditions. Once the switch cabinet leaks electricity, the switch cabinet can possibly cause the electric shock of a human body, and in addition, if a large amount of leakage current exists for a long time, the insulation of electrical equipment can be further deteriorated, even the interphase short circuit is caused, and serious accidents such as fire disasters are caused.
At present, a metal sheet is generally disposed on a busbar of a switch cabinet, and the metal sheet is used for guiding or collecting leakage current of the switch cabinet. However, the leakage of the general switch cabinet starts from the movable contact or the fixed contact, and the movable contact and the fixed contact are further away from the busbar by a certain distance, so that the leakage at the positions of the movable contact and the fixed contact cannot be discharged in time. For the switch cabinet, the places of the moving contact and the fixed contact can generate heat due to the increase of current, so that the explosion of the switch cabinet can be caused to a certain extent, and the safety of equipment and people can be harmed.
Disclosure of Invention
The invention aims to provide an electric field energy collecting device and a passive wireless sensor thereof, which can timely collect leakage current at a moving contact and a static contact of a switch cabinet, improve the safety of the switch cabinet and save energy.
To solve the problems of the prior art, the present invention provides an electric field energy collecting apparatus, comprising: the switch circuit comprises a switch loop, a static contact, a conductive device, a rectifier circuit, an energy storage circuit, a voltage conversion circuit and a power supply, wherein the switch loop is provided with a moving contact and a static contact;
the conductive device is used for outputting leakage current at the moving contact and the static contact to the rectifying circuit, the rectifying circuit is used for converting alternating current into direct current and outputting the direct current to the energy storage circuit, and the energy storage circuit is used for storing electric field energy.
In addition, the conductive device is an annular metal sheet.
In addition, the rectification circuit is a bridge rectification circuit.
In addition, the voltage conversion circuit is a voltage boosting circuit or a voltage reducing circuit.
In addition, the energy storage circuit also comprises a protection circuit, wherein the input end of the protection circuit is connected with the output end of the rectifying circuit, and the output end of the protection circuit is connected with the input end of the energy storage circuit; the protection circuit includes a zener diode that disconnects from the tank circuit when the input voltage exceeds the breakdown voltage.
In addition, the energy storage circuit comprises a plurality of energy storage modules, and each energy storage module comprises an energy storage capacitor, voltage detection modules connected to two ends of the energy storage capacitor in parallel, and an electronic switch connected with the voltage detection modules.
In addition, the energy storage circuit comprises a first energy storage module and a second energy storage module, wherein the first energy storage module comprises a first capacitor, a first voltage detection module connected in parallel to two ends of the first capacitor, and a first electronic switch connected with the first voltage detection circuit; the second energy storage module comprises a second capacitor, a second voltage detection module connected in parallel to two ends of the second capacitor, and a second electronic switch connected with the second voltage detection module; the capacity of the second capacitor is larger than that of the first capacitor.
Correspondingly, the invention also discloses a passive wireless sensor which comprises a power supply module, wherein the power supply module is connected with the conductive device of the electric field energy collecting device, collects the electric field energy of the switch loop and supplies power by taking the collected electric field energy as a power supply.
In addition, the power supply module comprises a rectifying circuit, an energy storage circuit and a voltage conversion circuit, wherein the input end of the rectifying circuit is connected with the conductive device and the moving contact of the switch loop, the output end of the rectifying circuit is connected with the input end of the energy storage circuit, the output end of the energy storage circuit is connected with the input end of the voltage conversion circuit, and the output end of the voltage conversion circuit is connected with a load.
In addition, the power supply module further comprises a protection circuit, the input end of the protection circuit is connected with the output end of the rectifying circuit, and the output end of the protection circuit is connected with the input end of the energy storage circuit.
The invention has the beneficial effects that: according to the technical scheme, the conductive devices are arranged at the moving contact and the static contact of the switch loop and are in contact connection in a sleeving manner, so that the connection reliability of the conductive devices and the moving contact and the static contact is improved; and because the moving contact and the static contact are the sources of the leakage of the switch loop, the conductive device is arranged at the position, and the leakage current can be led out from the source of the leakage current, so that on one hand, the safety of the switch loop is enhanced, the damage of the leakage current to the electronic device of the switch loop is avoided, on the other hand, the loss of the leakage current is avoided, and the utilization rate of electric field energy is improved.
Drawings
Fig. 1 is a schematic circuit diagram of a first embodiment of an electric field energy collecting apparatus of the present invention;
FIG. 2 is a schematic diagram of the connection positions of the conductive device with the moving contact and the static contact in the electric field energy collecting apparatus according to the present invention;
fig. 3 is a schematic circuit diagram of a second embodiment of an electric field energy collecting apparatus of the present invention;
FIG. 4 is a schematic view of a first embodiment of a wireless sensor of the present invention;
fig. 5 is a schematic diagram of a second embodiment of a wireless sensor of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1-2, fig. 1 is a schematic circuit diagram of a first embodiment of an electric field energy collecting apparatus of the present invention, comprising: a conductive device 11, a rectifying circuit 12, an energy storage circuit 13, and a voltage conversion circuit 14; the conductive device is sleeved with the moving contact 02 and the static contact 01 of the switch loop, as shown in fig. 2. The conductive device 11 and the moving contact are respectively connected with the input end of the rectifying circuit 12, the output end of the rectifying circuit 12 is connected with the input end of the energy storage circuit 13, the output end of the energy storage circuit 13 is connected with the input end of the voltage conversion module 14, and the output end of the voltage conversion module 14 is connected with a load.
The conductive element 11 may be a functional element made of a material, such as a metal sheet. In order to make good contact between the conductive device and the movable contact and the fixed contact, the conductive device can be selected from an annular metal sheet. The moving contact and the static contact can be conveniently wrapped in the metal sheet in shape, and the metal sheet has good flexibility and is more conformable, so that the contact area and the contact reliability of the conductive device, the moving contact and the static contact can be improved, the conductive device cannot easily fall off, and the conductive reliability is improved.
The rectifier circuit 12 may be a half-wave rectifier circuit or a bridge rectifier circuit. In the technical scheme, the bridge rectifier circuit is adopted, so that the positive half part of the sine wave can be output no matter the input alternating current is the positive half part of the sine wave or the negative half part of the sine wave, and the utilization efficiency of the input sine wave is doubled compared with that of half-wave rectification.
The tank circuit 13 may include a plurality of tank modules. Every energy storage module includes energy storage capacitor, voltage detection circuit and electronic switch three, adopts a plurality of energy storage modules to collect electric field energy among this technical scheme, and energy storage capacitor's effect is the system work power supply, and voltage detection circuit detects the energy storage information of electric capacity, and electronic switch plays the effect of disconnection or closing the load, and the three links the cooperation and uses to accomplish energy-conserving control's efficiency. Therefore, the electric field energy can be effectively collected under the condition that the switch loop is small, and the possibility that leakage current is lost due to insufficient collection is avoided. The number of the energy storage modules which are specifically arranged can be adjusted and set according to the load power and the electricity taking environment.
The voltage conversion module 14 may be a voltage boosting circuit or a voltage reducing circuit, so that the voltage stored in the storage circuit 13 is adjusted to match the voltage required by the load when being output, and therefore, either the voltage needs to be boosted or the voltage needs to be reduced; in particular, the implementation may be a chip.
The present invention will be further described below by taking an example in which the energy storage circuit 13 includes two energy storage units, namely a first energy storage unit and a second energy storage unit.
Referring to fig. 3, the fig. 3 is a circuit diagram of a second embodiment of the electric field energy collecting device of the present invention, which is different from the first embodiment, the present application further includes a protection circuit 15, and the tank circuit 13 further includes a first tank module 131 and a second tank module 132. The output end of the protection circuit 15 is connected with the output end of the rectifying circuit 12, and the output end of the protection circuit 15 is connected with the input end of the energy storage circuit 13.
And the protection circuit 15 is used for protecting the energy storage circuit. It may include a zener diode that functions to prevent overvoltage from damaging the electronic device when the voltage output from the rectifying circuit exceeds the breakdown voltage of the zener diode.
A first energy storage module 131 comprising a first capacitor 1311, a first voltage detection module 1312 and a first electronic switch 1313; two ends of the first capacitor 1311 are connected to the first voltage detection module 1312, and an output end of the first voltage detection module 1312 is connected to the electronic switch 1313; during specific implementation, the first voltage detection module detects the energy stored in the first capacitor and sends detection information to the first electronic switch, and the first electronic switch turns on or off a load according to the received information, so that an energy-saving effect is achieved.
The second energy storage module 132 includes a second capacitor 1321, a second voltage detection module 1322, and a second electronic switch 1321, and the specific working process is the same as that of the first energy storage module, which is not described herein again.
It should be noted that, compared with the second capacitor 1321, the first capacitor 1311 is used as a piezoelectric capacitor to supply power to the system, so that the energy consumption requirement is large; the second capacitor is a detection capacitor, and a large capacitor is not needed, so that the capacity of the first capacitor is larger than that of the second capacitor; in addition, the load in this embodiment may be a sensor or other microprocessor of low voltage electronic components.
Another aspect of the invention is described below.
Referring to fig. 4, fig. 4 is a schematic diagram of a first embodiment of a wireless sensor according to the present invention, which includes a power supply module 41, a microprocessor 42, an acquisition module 43, and a communication module 44; the input end of the power supply module 41 is connected to the conductive device and the moving contact of the electric field energy collecting device, and the conductive device is not described herein again because the above description has been given in detail. In addition, the output end of the power supply module 41 is connected with the input end of the microprocessor 42; the acquisition module 43 is connected with the microprocessor 42, and during specific implementation, the acquisition module 43 transmits acquired information to the microprocessor 42; the communication module 44 is connected to the microprocessor 42, and the microprocessor 42 communicates with the outside through the communication module 44, so that a cable connection is not required.
The electric energy of the power supply module of the technical scheme is derived from the conductive device of the collecting device of the electric field energy, the conductive device transmits the leakage current of the switch loop to the power supply module, and the power supply module supplies power for the wireless sensor after collecting the electric energy, so that the electric field energy of the leakage current is fully utilized, the utilization rate of energy is improved, and the waste of the electric field energy is avoided.
Referring to fig. 5, the diagram is a schematic diagram of a second embodiment of the wireless sensor of the present invention, and includes a protection circuit 51, a rectification circuit 52, a tank circuit 53, and a voltage conversion circuit 54, an input end of the protection circuit 51 is connected to an output end of the rectification circuit 52, an output end of the protection circuit 51 is connected to an input end of the tank circuit 53, an output end of the tank circuit 53 is connected to an input end of the voltage conversion circuit 54, and an output end of the voltage conversion circuit 54 is connected to a load.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. An electric field energy collecting device is characterized by comprising a conductive device sleeved outside a moving contact and a fixed contact of a switch loop, wherein the conductive device and the moving contact are respectively connected with the input end of a rectifying circuit, the output end of the rectifying circuit is connected with the input end of an energy storage circuit, the output end of the energy storage circuit is connected with the input end of a voltage conversion circuit, and the output end of the voltage conversion circuit is connected with a load; the conductive device is an annular metal sheet; the conductive device is in contact connection with the moving contact and the static contact in a sleeving manner;
the conductive device is used for outputting leakage current at the moving contact and the static contact to the rectifying circuit, the rectifying circuit is used for converting alternating current into direct current and outputting the direct current to the energy storage circuit, and the energy storage circuit is used for storing electric field energy.
2. The electric field energy harvesting device of claim 1, wherein the rectifying circuit is a bridge rectifying circuit.
3. The electric field energy harvesting device of claim 1, wherein the voltage conversion circuit is a boost circuit or a buck circuit.
4. The electric field energy harvesting device of claim 1, further comprising a protection circuit, an input of the protection circuit being connected to an output of the rectification circuit, an output of the protection circuit being connected to an input of the tank circuit; the protection circuit includes a zener diode that disconnects from the tank circuit when the input voltage exceeds the breakdown voltage.
5. The electric field energy harvesting device as recited in any of claims 1 to 4, wherein the energy storage circuit comprises a plurality of energy storage modules, the energy storage modules comprising an energy storage capacitor, a voltage detection module connected in parallel across the energy storage capacitor, and an electronic switch connected to the voltage detection module.
6. The electric field energy harvesting device according to any of claims 1 to 4, wherein the tank circuit comprises a first tank module and a second tank module, the first tank module comprises a first capacitor, a first voltage detection module connected in parallel across the first capacitor, a first electronic switch connected to the first voltage detection circuit; the second energy storage module comprises a second capacitor, a second voltage detection module connected in parallel to two ends of the second capacitor, and a second electronic switch connected with the second voltage detection module; the capacity of the second capacitor is larger than that of the first capacitor.
7. A passive wireless sensor comprising a power supply module, wherein the power supply module is connected to the conductive device of claim 1, collects electric field energy of a switching circuit, and supplies power using the collected electric field energy as a power source.
8. The passive wireless sensor according to claim 7, wherein the power supply module comprises a rectifying circuit, a tank circuit, and a voltage converting circuit, wherein an input terminal of the rectifying circuit is connected to the conductive device and the moving contact of the switch circuit, an output terminal of the rectifying circuit is connected to an input terminal of the tank circuit, an output terminal of the tank circuit is connected to an input terminal of the voltage converting circuit, and an output terminal of the voltage converting circuit is connected to a load.
9. The passive wireless sensor of claim 8, wherein the power supply module further comprises a protection circuit, an input of the protection circuit is connected to an output of the rectification circuit, and an output of the protection circuit is connected to an input of the tank circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976994.XA CN108063496B (en) | 2016-11-07 | 2016-11-07 | Electric field energy collecting device and passive wireless sensor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610976994.XA CN108063496B (en) | 2016-11-07 | 2016-11-07 | Electric field energy collecting device and passive wireless sensor thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108063496A CN108063496A (en) | 2018-05-22 |
| CN108063496B true CN108063496B (en) | 2020-06-16 |
Family
ID=62137365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610976994.XA Active CN108063496B (en) | 2016-11-07 | 2016-11-07 | Electric field energy collecting device and passive wireless sensor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108063496B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109766980B (en) | 2019-01-17 | 2022-05-06 | 卓捷创芯科技（深圳）有限公司 | Circuit and method for improving energy collection of passive radio frequency identification tag of temperature sensor |
| CN110635548A (en) * | 2019-09-29 | 2019-12-31 | 杨木林 | Fully-autonomous ultralow-starting-current energy collection intermittent power supply and circuit topology and control method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281837A (en) * | 2007-04-05 | 2008-10-08 | 浙江正泰电器股份有限公司 | Modularization aftercurrent actuating protector |
-
2016
- 2016-11-07 CN CN201610976994.XA patent/CN108063496B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101281837A (en) * | 2007-04-05 | 2008-10-08 | 浙江正泰电器股份有限公司 | Modularization aftercurrent actuating protector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108063496A (en) | 2018-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2012139826A (en) | POWER SUPPLY SYSTEM WITH REDUCED POWER LOSSES, ELECTRONIC DEVICE AND CONTROLLER | |
| CN104135061A (en) | Direct current supply system with leakage protection | |
| CN102914725B (en) | Medium-voltage power distribution network fault monitoring device | |
| CN108063496B (en) | Electric field energy collecting device and passive wireless sensor thereof | |
| CN202197094U (en) | Power transmission line intelligent fault monitoring coupling power supply protective device | |
| CN103187792B (en) | The uninterrupted high frequency switch power of high energy efficiency in ATM | |
| CN104269916A (en) | Method for achieving switching between high-voltage induction power supply and photovoltaic power supply | |
| CN106711922B (en) | Electrical shock protective device and electric power system | |
| CN102638093B (en) | Power off protection device | |
| CN202309541U (en) | Alternating current regulated power supply possessing wide voltage input scope and lightning stroke and surge prevention function | |
| JP6147402B1 (en) | DC power distribution system | |
| CN202550895U (en) | AC stabilized power supply with over-voltage and under-voltage protection function | |
| CN103780076A (en) | High-power switching power source | |
| CN210982598U (en) | High-voltage load monitoring circuit based on current detection | |
| CN203274776U (en) | Electric field energy collecting type wireless sensor | |
| CN203261097U (en) | Small-current power-taking and power-supply system of current transformer | |
| JP6842545B2 (en) | Low emissivity uninterruptible power supply | |
| CN207381975U (en) | A kind of new low-voltage reactive compensation control device | |
| CN206977324U (en) | Power circuit for low-voltage circuit breaker | |
| CN204707028U (en) | Alternating current-direct current adaptive circuit and Medical Devices | |
| CN204089151U (en) | A kind of family with leakage current protection device table case | |
| CN218771259U (en) | Anticreep protection device and system | |
| CN220585976U (en) | Cascade multi-level inverter main control unit for energy storage | |
| CN105680572A (en) | Non-invasive self-powered wireless sensor detection system | |
| CN207442428U (en) | A kind of ground protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Guodong Inventor after: Wang Shisen Inventor after: Wu Xiaobing Inventor before: Wang Shisen Inventor before: Wu Xiaobing Inventor before: Zhao Guodong |