CN102938621A - Vibration energy collecting system - Google Patents
Vibration energy collecting system Download PDFInfo
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- CN102938621A CN102938621A CN201110232429XA CN201110232429A CN102938621A CN 102938621 A CN102938621 A CN 102938621A CN 201110232429X A CN201110232429X A CN 201110232429XA CN 201110232429 A CN201110232429 A CN 201110232429A CN 102938621 A CN102938621 A CN 102938621A
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Abstract
The invention provides a vibration energy collecting system which is composed of a vibration energy collector, an energy management circuit and a protection circuit of the energy management circuit. The vibration energy collector is a piezoelectric type energy collector, and the principle of the vibration energy collector is that vibration energy in the ambient environment is directly converted into electric energy. The energy management circuit is mainly composed of an alternating current (AC)/direct current (DC) switching circuit module, an integrated circuit (IC) control circuit module, a boosting circuit module and the protection circuit. According to the vibration energy collecting system, the vibration energy in the environment can be successfully converted into the electric energy, and the electric energy can be stored in a battery pack or a rechargeable super-capacitor; by means of a maximum power point tracking (MPPT) method, efficiencies of the vibration energy collecting system are improved; and if temperatures of the battery pack are too high or voltage or current of the battery pack is in a saturation state during the process of collecting energy, the IC control circuit module shuts off the charging state of the battery pack.
Description
Technical field
The invention belongs to the micro power field, it is characterized in that the various vibrating machine energy in the environment are gathered, and be that electrical power storage is in energy-storage travelling wave tube with the Conversion of Energy that gathers.Main purpose is for micro radio sensor network and the power supply of other low energy-consumption electronic device, improves the utilance of the energy.
Technical background
In recent years, along with the development of microelectric technique and wireless technology, electronic equipment and wireless senser have entered the epoch small-sized, low power consumption.Generally, these equipment all are to rely on traditional battery that energy is provided, such as Ni-MH battery, lithium polymer battery etc.But there are some shortcomings in conventional batteries, the one, and still larger with respect to its volume of microsensor; The 2nd, the energy supply life-span is limited, needs after use a period of time to change or charging, and for the wireless senser that is placed on awful weather or far zone, this is a very serious restriction condition.At present, from environment, extract the energy resource collecting technology of not utilizing the energy (temperature difference, vibration etc.), just day by day become contention scheme strong in the various applications.Industrial expansion just develops fast towards microelectronics technology, little power consumption, automation aspect, the fast development that this has just caused environmental energy to gather.Embedded type device, embedded equipment, distributed system, wireless senser, the Wireless Telecom Equipment of present various microprocessor controls all develop towards MEMS (microelectromechanical systems).Develop a kind ofly can use for a long time, with little energy source self-collecting and the energy supplying system of various energy conversions in the surrounding environment as electric energy, be that people expect to have broad application prospects the major issue that solves.
On the other hand, although within the time of short-term, little energy resource collecting system can't replace the employed battery of all spectra or electric power system fully, several years, low-power consumption, numerous advantages such as collection and self energizing, environmental protection certainly can be reached but it still relies on it to need not to change battery or duration, user and industrial selection will be become.Therefore, the various vibration energy of environment are converted into the vibration energy acquisition system of electric energy, be that people wish the problem that solves to have widely practical value always.
Summary of the invention
The object of the invention is to have designed a kind of vibration energy acquisition system, thereby has solved the problem of vibration energy resource collecting power supply in the surrounding environment.
The technical solution used in the present invention is as follows:
Vibration energy acquisition system mainly is comprised of vibration energy collector, energy conservation circuit and stored energy element thereof.Wherein said vibration energy collector adopts the piezoelectric type energy collector, and its principle directly is converted into the vibrating machine energy in the surrounding environment device of electric energy.
In the described scheme, vibration energy acquisition system energy conservation main circuit will be comprised of AC/DC change-over circuit module, boost booster circuit module and IC control circuit module.Wherein AC/DC change-over circuit module adopts the rectification circuit of field effect transistor and voltage comparator composition greatly to reduce system power dissipation; Boost booster circuit module adopts field effect transistor as the basic booster circuit module of switch control; IC control circuit module mainly is comprised of the microcontroller of low-power consumption.
In the described scheme, vibration energy acquisition system storage power element is comprised of rechargeable battery pack or chargeable super capacitor.
In the such scheme, vibration energy acquisition system energy acquisition process is as follows:
Vibration energy collector is converted into electric energy with the various vibrating machine energy in the surrounding environment, and the voltage of conversion is through AC/DC rectification circuit module rectification output dc voltage; Direct voltage raises voltage through boost booster circuit module and is stored in the battery pack, IC control circuit module is by the voltage and current of sampling rectification output, by maximal power tracing point method (MPPT) control impuls waveform duty cycle regulation output voltage.
The Whole Work Flow of described vibration energy acquisition system is as follows:
Vibration energy collector is converted into electric energy with the various vibrating machine energy in the surrounding environment, and the voltage of conversion is through AC/DC rectification circuit module rectification output dc voltage; Direct voltage raises voltage through boost booster circuit module and is stored in the battery pack, IC control circuit module is by the voltage and current of sampling rectification output, by maximal power tracing point method (MPPT) control impuls waveform duty cycle regulation output voltage, make output voltage stabilization; The output voltage process filtering capacitance stores of process boost module is in rechargeable battery pack.
Described vibration energy acquisition system also comprises battery voltage signal sampling, and sampled signal is through operational amplifier input IC control circuit module, and IC control circuit module is by the input-signal judging battery pack voltage that whether reaches capacity.The voltage if battery voltage reaches capacity, IC control circuit module produces an interrupt signal charge closing switching circuit, with protection system safety.
Described vibration energy acquisition system also comprises thermistor sampling battery bottom temperature, and the sample temperature signal is through operational amplifier input IC control circuit module, and whether IC control circuit module reaches rated temperature by the input-signal judging battery temperature.If battery temperature reaches the battery rated temperature, IC control circuit module produces an interrupt signal charge closing switching circuit, with protection system safety.
Described vibration energy acquisition system also comprises the battery pack current signal sampling, and sampled signal is through operational amplifier input IC control circuit module, and IC control circuit module is by the input-signal judging battery pack current electric current that whether reaches capacity.The electric current if battery pack current reaches capacity, IC control circuit module produces an interrupt signal charge closing switching circuit, with protection system safety.
The present invention has the following advantages:
(1) reduce cost: vibration energy acquisition system can be converted into the vibrating machine energy in the surrounding environment electrical power storage in rechargeable battery pack or super capacitor, the electric energy of its collection can be the components and parts power supply of low-power consumption, has reduced the cost of traditional laying power line and has changed the required regular maintenance cost of battery.
(2) components and parts low-power consumption: vibration energy acquisition system AC/DC rectification circuit module, IC control circuit module and boost booster circuit module all adopt low energy-consumption electronic device, have reduced system power dissipation.
(3) improve energy conversion efficiency: vibration energy acquisition system adopts MPPT maximum power point tracking method (MPPT) control pwm pulse waveform duty cycle to regulate the boost module output voltage, and the system capacity conversion efficiency is improved greatly.
(4) convenient management: when the energy density of energy-storage travelling wave tube (such as battery) is increased to a certain degree, meeting is similar to the same device of explosive so that it becomes, use the charging problem of low-power consumption microcontroller management energy-storage travelling wave tube, the safety problem of the class of avoiding exploding occurs.
Description of drawings
Fig. 1 is the general structure block diagram that the present invention proposes.
Fig. 2 is the overview flow chart that the present invention proposes.
Embodiment
Fig. 1 is the structured flowchart of vibration energy acquisition system.This vibration energy acquisition system design comprises: vibration energy collector, AC/DC change-over circuit module, boost booster circuit module, IC control circuit module and battery pack etc.
The specific embodiment of the invention as shown in Figure 2, the Whole Work Flow of its vibration energy acquisition system is as described below: vibration energy collector is converted into electric energy with the various vibrating machine energy in the surrounding environment, and the voltage of conversion is through AC/DC rectification circuit module rectification output dc voltage; Direct voltage raises voltage through boost booster circuit module and is stored in the battery pack, IC control circuit module is by the voltage and current of sampling rectification output, by maximal power tracing point method (MPPT) control impuls waveform duty cycle regulation output voltage, make output voltage stabilization; The output voltage process filtering capacitance stores of process boost module is in rechargeable battery pack.
Described vibration energy acquisition system also comprises battery voltage signal sampling, and sampled signal is through operational amplifier input IC control circuit module, and IC control circuit module is by the input-signal judging battery pack voltage that whether reaches capacity.The voltage if battery voltage reaches capacity, IC control circuit module produces an interrupt signal charge closing switching circuit, with protection system safety.
Described vibration energy acquisition system also comprises thermistor sampling battery bottom temperature, and the sample temperature signal is through operational amplifier input IC control circuit module, and whether IC control circuit module reaches rated temperature by the input-signal judging battery temperature.If battery temperature reaches the battery rated temperature, IC control circuit module produces an interrupt signal charge closing switching circuit, with protection system safety.
Described vibration energy acquisition system also comprises the battery pack current signal sampling, and sampled signal is through operational amplifier input IC control circuit module, and IC control circuit module is by the input-signal judging battery pack current electric current that whether reaches capacity.The electric current if battery pack current reaches capacity, IC control circuit module produces an interrupt signal charge closing switching circuit, with protection system safety.
Claims (6)
1. vibration energy acquisition system is characterized in that by vibration energy collector and energy conservation the electric circuit constitute.Described vibration energy collector is to utilize piezoelectric effect to realize the vibrating machine energy to the generator of electric energy conversion, and it can convert vibration mechanical energy to the device of electric energy.Its characteristics are to vibrate energy collector can be converted to electric energy with the vibration mechanical energy in the surrounding environment, therefore theoretically, has avoided the purpose of frequent replacing system power supply, improves energy utilization rate.
2. according to claims 1 described vibration energy acquisition system, it is characterized in that described vibration energy collector and energy conservation the electric circuit constitute.Described energy conservation circuit is characterized in that mainly being comprised of IC control circuit module, AC/DC change-over circuit module, boost booster circuit module and protective circuit.
3. according to claims 2 described vibration energy acquisition systems, it is characterized in that IC control circuit module mainly is comprised of the microcontroller of low-power consumption; AC/DC change-over circuit module mainly forms rectification circuit by low power consumption comparator and field effect transistor; Boost booster circuit module mainly is comprised of the DC/DC voltage up converting circuit, it is characterized in that microcontroller pulse waveform regulated duty cycle adjustment output voltage.
4. according to claims 3 described vibration energy acquisition systems, it is characterized in that AC/DC change-over circuit module mainly forms rectification circuit by low power consumption comparator and field effect transistor, has reduced the starting voltage of field effect transistor power loss and rectification circuit.According to claims 3 described vibration energy acquisition systems, it is characterized in that microcontroller by the input voltage of sampling, electric current, by MPPT maximum power point tracking method (MPPT) pulse waveform regulated duty cycle adjustment output voltage.
5. vibration energy acquisition system is characterized in that various vibrational energies in the environment to be converted into electrical power storage in battery pack or chargeable super capacitor the inside.
6. according to claims 5 described vibration energy acquisition systems, it is characterized in that the energy resource collecting process is as described below: vibration energy collector is converted into electric energy with the various vibrating machine energy in the surrounding environment, and the voltage of conversion is through AC/DC circuit module rectification output dc voltage; Direct voltage is stored in voltage transitions in the battery pack through boost booster circuit module, IC control circuit module is by the voltage and current of sampling rectification output, by maximal power tracing point method (MPPT) control impuls waveform duty cycle regulation output voltage.IC control circuit module will gather the relevant information of vibration energy acquisition system, judge whether system works, if battery voltage reaches the battery rated voltage, IC control circuit module will be interrupted the batteries charging process; If battery temperature reaches specified battery temperature, IC control circuit module also will be interrupted the batteries charging process; If the batteries charging electric current reaches rated current, IC control circuit module also will be interrupted the batteries charging process.
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| CN201110232429XA CN102938621A (en) | 2011-08-15 | 2011-08-15 | Vibration energy collecting system |
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| CN201110232429XA CN102938621A (en) | 2011-08-15 | 2011-08-15 | Vibration energy collecting system |
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| CN102938621A true CN102938621A (en) | 2013-02-20 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767266A (en) * | 2015-03-10 | 2015-07-08 | 西安交通大学 | Power generation backpack based on piezoelectric effect |
| CN105553067A (en) * | 2016-02-04 | 2016-05-04 | 于建新 | Device capable of automatically generating electricity |
| CN105844833A (en) * | 2016-05-20 | 2016-08-10 | 威海广泰空港设备股份有限公司 | Wireless fire detector and fire detection alarm system |
| CN106100447A (en) * | 2016-08-16 | 2016-11-09 | 山东大学 | A kind of wireless senser micro battery based on MEMS vibration energy collector |
| CN106487047A (en) * | 2015-08-26 | 2017-03-08 | 中国电力科学研究院 | Electric power system in conjunction with the low-power consumption on-line monitoring equipment of efficient ultracapacitor |
| CN107317385A (en) * | 2017-08-22 | 2017-11-03 | 姚静洁 | A kind of power-supply system gathered based on vibrational energy |
| CN107332462A (en) * | 2017-07-25 | 2017-11-07 | 中山大学 | The self-powered piezoelectric vibration energy that can track maximum power point extracts circuit |
| CN107576389A (en) * | 2017-09-14 | 2018-01-12 | 浙江海洋大学 | A kind of torsional vibration monitoring device |
| CN109782131A (en) * | 2019-01-28 | 2019-05-21 | 浙江工业大学 | A kind of near-earth formula self-powered overhead transmission line fault detection means |
| CN111130264A (en) * | 2020-01-16 | 2020-05-08 | 湖北蕴盈科技有限公司 | Vehicle-mounted mobile endurance power generation and supply device |
| CN111245192A (en) * | 2020-02-03 | 2020-06-05 | 湖北蕴盈科技有限公司 | Vehicle-mounted mobile damping external power generation and supply device |
| CN111987787A (en) * | 2020-08-28 | 2020-11-24 | 北京航空航天大学 | Power management system of underwater vehicle with recoverable energy |
| CN112003359A (en) * | 2020-07-15 | 2020-11-27 | 宁波大学 | Double-source energy acquisition circuit based on double-stack resonance |
| CN112994199A (en) * | 2019-12-13 | 2021-06-18 | 北京小米移动软件有限公司 | Sound charging equipment, energy storage equipment and electronic equipment |
| CN113572388A (en) * | 2021-07-30 | 2021-10-29 | 浙江理工大学 | Piezoelectric energy collecting device and control method |
| CN113765384A (en) * | 2021-09-27 | 2021-12-07 | 电子科技大学 | Continuous maximum power point tracking method |
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| CN1633008A (en) * | 2005-01-04 | 2005-06-29 | 西安交通大学 | Method of piezoelectric power generation by using vibration energy of road surface, and street lighting luminaire system therefor |
| CN1848589A (en) * | 2006-04-26 | 2006-10-18 | 中南大学 | Piezoelectric energy trapping device capable of efficient trapping energy and energy-storaging |
| CN101783616A (en) * | 2010-01-04 | 2010-07-21 | 武汉理工大学 | Piezoelectric self-generated energy acquisition and illumination device for asphalt concrete pavement |
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| CN1633008A (en) * | 2005-01-04 | 2005-06-29 | 西安交通大学 | Method of piezoelectric power generation by using vibration energy of road surface, and street lighting luminaire system therefor |
| CN1848589A (en) * | 2006-04-26 | 2006-10-18 | 中南大学 | Piezoelectric energy trapping device capable of efficient trapping energy and energy-storaging |
| CN101783616A (en) * | 2010-01-04 | 2010-07-21 | 武汉理工大学 | Piezoelectric self-generated energy acquisition and illumination device for asphalt concrete pavement |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767266A (en) * | 2015-03-10 | 2015-07-08 | 西安交通大学 | Power generation backpack based on piezoelectric effect |
| CN106487047A (en) * | 2015-08-26 | 2017-03-08 | 中国电力科学研究院 | Electric power system in conjunction with the low-power consumption on-line monitoring equipment of efficient ultracapacitor |
| CN105553067A (en) * | 2016-02-04 | 2016-05-04 | 于建新 | Device capable of automatically generating electricity |
| CN105844833A (en) * | 2016-05-20 | 2016-08-10 | 威海广泰空港设备股份有限公司 | Wireless fire detector and fire detection alarm system |
| CN106100447A (en) * | 2016-08-16 | 2016-11-09 | 山东大学 | A kind of wireless senser micro battery based on MEMS vibration energy collector |
| CN106100447B (en) * | 2016-08-16 | 2019-01-25 | 山东大学 | A kind of wireless sensor micro battery based on MEMS vibration energy collector |
| CN107332462A (en) * | 2017-07-25 | 2017-11-07 | 中山大学 | The self-powered piezoelectric vibration energy that can track maximum power point extracts circuit |
| CN107317385A (en) * | 2017-08-22 | 2017-11-03 | 姚静洁 | A kind of power-supply system gathered based on vibrational energy |
| CN107576389A (en) * | 2017-09-14 | 2018-01-12 | 浙江海洋大学 | A kind of torsional vibration monitoring device |
| CN109782131A (en) * | 2019-01-28 | 2019-05-21 | 浙江工业大学 | A kind of near-earth formula self-powered overhead transmission line fault detection means |
| CN112994199A (en) * | 2019-12-13 | 2021-06-18 | 北京小米移动软件有限公司 | Sound charging equipment, energy storage equipment and electronic equipment |
| CN111130264A (en) * | 2020-01-16 | 2020-05-08 | 湖北蕴盈科技有限公司 | Vehicle-mounted mobile endurance power generation and supply device |
| CN111245192A (en) * | 2020-02-03 | 2020-06-05 | 湖北蕴盈科技有限公司 | Vehicle-mounted mobile damping external power generation and supply device |
| CN111245192B (en) * | 2020-02-03 | 2022-02-01 | 湖北蕴盈科技有限公司 | Vehicle-mounted mobile damping external power generation and supply device |
| CN112003359A (en) * | 2020-07-15 | 2020-11-27 | 宁波大学 | Double-source energy acquisition circuit based on double-stack resonance |
| CN112003359B (en) * | 2020-07-15 | 2021-12-14 | 宁波大学 | Double-source energy acquisition circuit based on double-stack resonance |
| CN111987787A (en) * | 2020-08-28 | 2020-11-24 | 北京航空航天大学 | Power management system of underwater vehicle with recoverable energy |
| CN111987787B (en) * | 2020-08-28 | 2022-07-26 | 北京航空航天大学 | Power management system of underwater vehicle with recoverable energy |
| CN113572388A (en) * | 2021-07-30 | 2021-10-29 | 浙江理工大学 | Piezoelectric energy collecting device and control method |
| CN113765384A (en) * | 2021-09-27 | 2021-12-07 | 电子科技大学 | Continuous maximum power point tracking method |
| CN113765384B (en) * | 2021-09-27 | 2023-03-28 | 电子科技大学 | Continuous maximum power point tracking method |
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Application publication date: 20130220 |