CN102457206A - Magneto-electric energy converter and energy management circuit thereof - Google Patents
Magneto-electric energy converter and energy management circuit thereof Download PDFInfo
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- CN102457206A CN102457206A CN2010105194128A CN201010519412A CN102457206A CN 102457206 A CN102457206 A CN 102457206A CN 2010105194128 A CN2010105194128 A CN 2010105194128A CN 201010519412 A CN201010519412 A CN 201010519412A CN 102457206 A CN102457206 A CN 102457206A
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Abstract
The invention discloses a magneto-electric energy converter and an energy management circuit thereof. The invention relates to a double-elastic substrate magneto-electric energy converter and provides the magneto-electric energy converter capable of acquiring the energy of an alternating magnetic field in a wider band and the energy management circuit of the magneto-electric energy converter. The magneto-electric energy converter comprises a wide-band magneto-electric energy converter, an energy receiving management circuit, a wireless sensor transmitting and receiving node and a personal computer (PC) data processor, wherein in the wireless sensor transmitting and receiving node, a low-power-consumption digital sensor SHT11 is employed to measure temperature and humidity parameters; and a measured signal is processed by an analog/digital (A/D) converter inside a wireless sensor and a microprocessor and then transmitted by a micro-power-consumption transmitting and receiving communication chip CC1100; and a receiving end transmits a received digital signal to a PC through a serial port for processing, so that the aim of monitoring environment parameters is fulfilled.
Description
Technical field:
The present invention relates to a kind of pair of elastic substrates magneto-electric transducer, relate in particular to a kind of magneto-electric transducer and energy management circuit thereof.
Background technology:
Development along with wireless sensor network technology; Micro radio sensing device network has been widely used in military affairs, environmental monitoring forecast, health care, Smart Home, large-scale workshop management, and the special occasions in the fields such as safety monitoring of airport, large scale industry garden.Wireless sensor node is the most basic part of wireless sensor network; Its volume is small; The self-contained energy content of battery is limited, can not satisfy the needs of long-term work, and at environment abominable or other human occasions that can't arrive; The replacing of battery very difficulty even maybe, thereby to collect environmental energy and convert electric energy into be that wireless senser power supply becomes an international research focus.The energy acquisition mode of having been reported by Chinese scholars has had multiple, like electromagnetism, static, thermoelectricity, piezoelectricity etc.The collected alternating magnetic field energy of conductor magneto-electric energy acquisition mode wherein is present in each corner of the Nature, is the fine source that energy is provided for wireless sensor node.And the magneto-electric transducer that utilizes giant magnetostrictive material and piezoelectric to make is also reported by Chinese scholars.
Magneto-electric transducer is to be closed to paste by giant magnetostrictive material and piezoelectric material layer to form; Under the effect in magnetic field, magnetostrictive layer produces stress or strain, and this mechanical movement is delivered to piezoelectric layer through adhesive linkage; Piezoelectric layer is owing to inverse piezoelectric effect produces electric field, thus the conversion of realization magnetoelectricity.The phenomenon that magneto-electric transducer has a high resonance magnetoelectricity conversion coefficient is at first by people such as Dong SX report, and they have also carried out theory and experimental study to the resonance magneto-electric response of the magneto-electric transducer of multiple structure subsequently.But these structures only just have higher magnetoelectricity conversion coefficient in very narrow resonance frequency band, and the magnetoelectricity conversion coefficient of these structures is high more, and resonant bandwidth is just narrow more.To this phenomenon, the magneto-electric transducer series/parallel of several different resonance frequencys is got up, widen magneto-electric response frequency band purpose to reach, but the output voltage of its series/parallel is littler than single magneto-electric transducer output voltage.In addition, the alternating magnetic field in the natural environment is faint, so the magneto-electric transducer power output is less, can not directly drive wireless senser work.
Summary of the invention:
The present invention is exactly to the problems referred to above, and a kind of magneto-electric transducer and the energy management circuit thereof that can gather alternating magnetic field energy in the broad frequency band is provided.
For reaching above purpose, the present invention adopts following technical scheme, the present invention includes broadband magneto-electric transducer, energy receiving management circuit, wireless senser transmitting-receiving node, PC data processing; Its structural feature is to adopt in the wireless sensor node low power consumption digital formula transducer SHTll to measure temperature, humidity parameter; The signal of surveying after the processing of inner A/D of wireless senser and microprocessor, receive and dispatch communication chip CCll00 through little power consumption and emit.Receiving terminal is transferred to PC and processing with the digital signal of accepting through serial ports, thereby reaches the purpose of monitoring of environmental parameter.
The beneficial effect of the invention:
Utilize the elastic base plate of two different length to control the magnetoelectricity frequency response of two elastic substrates magneto-electric transducer structures.The three dB bandwidth that experiment showed, the resonance response frequency band of this pair of elastic substrates structure is compared raising 330Hz with the three dB bandwidth of single elastic substrates structure, and its magnetoelectricity changing voltage has also improved 1.5 times.To the load characteristic of wireless senser, designed a kind of energy abrupt release circuit, and analyzed this circuit drives load under different duty cycle of switching and different frequency ability.Analyze according to these, confirmed the parameter of circuit.When the storage capacitor voltage is 0.5V, successfully drive the wireless sensor node operate as normal of maximum power dissipation 75mW.
Description of drawings;
Fig. 1 is a self energizing wireless sensor node structure chart.
Embodiment:
The present invention includes broadband magneto-electric transducer, energy receiving management circuit, wireless senser transmitting-receiving node, PC data processing; Adopt low power consumption digital formula transducer SHTll to measure temperature, humidity parameter in the wireless sensor node; The signal of surveying after the processing of inner A/D of wireless senser and microprocessor, receive and dispatch communication chip CCll00 through little power consumption and emit; Receiving terminal is transferred to PC and processing with the digital signal of accepting through serial ports, thereby reaches the purpose of monitoring of environmental parameter.
Electric power management circuit is made up of impedance matching circuit, AC/DC change-over circuit, energy storage super capacitor, control circuit, DC/DC translation circuit and interim storage capacitor Cl, and wherein, Cs is the energy storage super capacitor; Control circuit is controlled the startup of booster circuit through the voltage at monitoring super capacitor Cs two ends; Regulate the front end inductance of impedance matching circuit, make magneto-electric transducer and impedance matching circuit be in resonance condition; And then the turn ratio of the front and back end inductance through regulating impedance matching circuit, make that the output open circuit voltage K of impedance matching circuit is 2 times of storage capacitor voltage VI; Energy the storing among the storage capacitor Cs that so just makes the magneto-electric transducer generation with maximum power.When control circuit monitoring capacitance voltage reached 0.5V, energy abrupt release circuit start drove wireless senser work.Wireless senser is accomplished a signal emission, and the electric capacity voltage drops to about 0.475V, and magneto-electric transducer continues super capacitor is charged then; So just can make that the super capacitor voltage remains between 0.475～0.5V, magneto-electric transducer charges to super capacitor with higher power.
When switch S was in closure state, electric current increased in the transformer primary coil, and secondary coil induces electric current and flows out from end of the same name; This moment diode D, conducting, and D2 ends; Electric current is through choking-winding L, and energy is stored among the L, when switch breaks off, and the D2 conducting, the energy that is stored in the inductance L is an electric through the D2 loop.
Claims (3)
1. magneto-electric transducer and energy management circuit thereof comprise broadband magneto-electric transducer, energy receiving management circuit, wireless senser transmitting-receiving node, PC data processing; Adopt low power consumption digital formula transducer SHTll to measure temperature, humidity parameter in the wireless sensor node; The signal of surveying after the processing of inner A/D of wireless senser and microprocessor, receive and dispatch communication chip CCll00 through little power consumption and emit; Receiving terminal is transferred to PC and processing with the digital signal of accepting through serial ports, thereby reaches the purpose of monitoring of environmental parameter.
2. according to said a kind of magneto-electric transducer of claim 1 and energy management circuit thereof; It is characterized in that electric power management circuit is made up of impedance matching circuit, AC/DC change-over circuit, energy storage super capacitor, control circuit, DC/DC translation circuit and interim storage capacitor Cl; Wherein, Cs is the energy storage super capacitor; Control circuit is controlled the startup of booster circuit through the voltage at monitoring super capacitor Cs two ends; Regulate the front end inductance of impedance matching circuit, make magneto-electric transducer and impedance matching circuit be in resonance condition; And then the turn ratio of the front and back end inductance through regulating impedance matching circuit, make that the output open circuit voltage K of impedance matching circuit is 2 times of storage capacitor voltage VI; So just make energy that magneto-electric transducer produces with the storing among the storage capacitor Cs of maximum power, when control circuit monitoring capacitance voltage reached 0.5V, energy abrupt release circuit start drove wireless senser work.Wireless senser is accomplished a signal emission, and the electric capacity voltage drops to about 0.475V, and magneto-electric transducer continues super capacitor is charged then; So just can make that the super capacitor voltage remains between 0.475～0.5V, magneto-electric transducer charges to super capacitor with higher power.
3. according to said a kind of magneto-electric transducer of claim 1 and energy management circuit thereof, it is characterized in that when switch S is in closure state that electric current increases in the transformer primary coil, secondary coil induces electric current and flows out from end of the same name.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105194128A CN102457206A (en) | 2010-10-25 | 2010-10-25 | Magneto-electric energy converter and energy management circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105194128A CN102457206A (en) | 2010-10-25 | 2010-10-25 | Magneto-electric energy converter and energy management circuit thereof |
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| CN102457206A true CN102457206A (en) | 2012-05-16 |
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| CN2010105194128A Pending CN102457206A (en) | 2010-10-25 | 2010-10-25 | Magneto-electric energy converter and energy management circuit thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231997A (en) * | 2016-12-22 | 2018-06-29 | 迈来芯保加利亚有限公司 | Include the semiconductor devices of sourceless electromagnetic type transducer architecture |
| CN112821708A (en) * | 2021-02-05 | 2021-05-18 | 南京领通汇智科技有限公司 | Bistable electromagnetic-piezoelectric hybrid vibration energy collector and self-powered sensing system |
| CN114485910A (en) * | 2022-01-14 | 2022-05-13 | 国网江苏省电力有限公司徐州供电分公司 | Autonomous monitoring system and method for vibration state of high-voltage transmission conductor |
-
2010
- 2010-10-25 CN CN2010105194128A patent/CN102457206A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231997A (en) * | 2016-12-22 | 2018-06-29 | 迈来芯保加利亚有限公司 | Include the semiconductor devices of sourceless electromagnetic type transducer architecture |
| CN108231997B (en) * | 2016-12-22 | 2020-12-29 | 迈来芯保加利亚有限公司 | Semiconductor device including passive magnetoelectric transducer structure |
| CN112821708A (en) * | 2021-02-05 | 2021-05-18 | 南京领通汇智科技有限公司 | Bistable electromagnetic-piezoelectric hybrid vibration energy collector and self-powered sensing system |
| CN112821708B (en) * | 2021-02-05 | 2024-05-14 | 南京领通汇智科技有限公司 | Bistable electromagnetic-piezoelectric mixed vibration energy collector and self-powered sensing system |
| CN114485910A (en) * | 2022-01-14 | 2022-05-13 | 国网江苏省电力有限公司徐州供电分公司 | Autonomous monitoring system and method for vibration state of high-voltage transmission conductor |
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Application publication date: 20120516 |