CN203415999U - Multi-energy acquisition node power supply for wireless sensor network - Google Patents
Multi-energy acquisition node power supply for wireless sensor network Download PDFInfo
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- CN203415999U CN203415999U CN201320277157.XU CN201320277157U CN203415999U CN 203415999 U CN203415999 U CN 203415999U CN 201320277157 U CN201320277157 U CN 201320277157U CN 203415999 U CN203415999 U CN 203415999U
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a multi-energy acquisition node power supply for a wireless sensor network. The multi-energy acquisition node power supply comprises an energy acquisition module, a control center, a charge and discharge control module and a power supply management module. The energy acquisition module acquires solar energy, wind energy and hydropower from the environment through a reasonable rectification topology structure and transmits the acquired energy to an energy storage cell; the control center adjusts the energy acquisition efficiency and maintains the maximum energy acquisition efficiency; the control center employs a ZigBee wireless micro-processing module Jennic5139 and is powered by the energy storage cell; the charge and discharge control module controls the on/off of a charge and discharge circuit through the control center to prolong the service life of the energy storage cell; and the power supply management module selects reasonable output voltage to provide stable energy supply. The size is small, costs are low, and the node is guaranteed to have stable power supply in different environments.
Description
Technical field
The utility model relates to the wireless sensor network node power supply that a kind of solar energy, wind energy and water can gather.
Background technology
Complex environment data can be collected, process and be issued to wireless sensor network on a large scale, and can automatically configure, and at numerous areas (military affairs, agricultural, industry and environment etc.), has extremely wide application prospect.But each node of wireless sensor network is mostly laid for random addressing, if be very complicated therefore each node adopts electrical network bracing wire power supply, impossible especially for remote districts, and because each node of the reasons such as environment or node motion generally adopts disposable battery power supply, owing to being subject to the impact of the factors such as volume, price, the capacity of battery is not generally very large.And sensor node number is many, cost requirement is cheap, distributed areas are wide, deployment region circumstance complication, some region even personnel can not reach, and it is unpractical by the mode of replacing battery, carrying out the supplementary sensor node energy.But the life span of radio sensing network but requires several years even several months, therefore how for providing energy supply reliablely and stablely, radio sensing network node becomes a bottleneck problem of restriction radio sensing network development.
And utilize energy collection technology from surrounding environment, to gather continuously utilisable energy, for a new direction has been opened up in the solution of this problem.And single energy in environment is unsettled, although the design of system leaves surplus for environmental change, but may there is the situation of depleted of energy.Sensor node environment of living in is different, and the energy that can collect in environment is not identical yet, adopts a certain specific energy acquisition technology to be difficult to guarantee that the wireless sensor network in multiple environment all can obtain institute's energy requirement reliably.The stability of traditional solar energy acquisition node power and for the adaptability of complex environment or not ideal enough, causes the loss of some nodes.
Utility model content
The purpose of this utility model is in order to overcome above-mentioned the deficiencies in the prior art, a kind of wireless sensor network node power supply of many energy acquisitions is provided, this power module volume is little, cost is low, can be for node provides reliable and stable energy supply in different environment.
The technical solution of the utility model is:
A radio sensing network node power supply for energy acquisition, comprises energy acquisition module, discharges and recharges control module, power supply management module and the control core that is connected with above-mentioned three; Energy acquisition module comprises the electricity energy harvester of at least two classes in solar panel, wind-driven generator or hydroelectric generator, a plurality of electricity energy harvesters are in parallel, each electricity energy harvester is connected with switching tube with a storage capacitor, and output is connected to energy-storage battery by a Boost rectification circuit for voltage stabilizing and adjusting energy collecting efficiency; Described storage capacitor is all with voltage sampling circuit, and terminal voltage value passes to the break-make that described control core is controlled described switching tube.
The turn-on and turn-off of the rectification circuit of described energy acquisition module are by control core, to export PWM ripple to control.
The described control module that discharges and recharges, energy-storage battery adopts lithium battery; Lithium battery passes to control centre with voltage sampling circuit, and terminal voltage size determines the charging and discharging state of lithium battery.
Described power supply management module energy source is energy-storage battery, by a stepping-up/stepping-down chopper circuit, makes output voltage stabilization and load matched.
Described control core is the wireless micro treatment module Jennic5139 of the ZigBee of radio sensing network, uses node to carry micro treatment module rather than add in addition a new control chip, and control core is powered by energy-storage battery.
The beneficial effects of the utility model: volume is little, cost is low, can guarantee that node can have stable energy supply under different environmental conditions.
Accompanying drawing explanation
The general structure block diagram of the radio sensing network node power supply of the many energy acquisitions of Fig. 1.
Fig. 2 energy acquisition module principle figure.
Fig. 3 method of perturbation maximal power tracing control strategy.
Fig. 4 Jennic5139ZigBee is wireless micro treatment module control core.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, the radio sensing network node power supply of many energy acquisitions, comprises energy acquisition module, discharges and recharges control module, power supply management module and the control core that is connected with above-mentioned three; Energy acquisition module (as shown in Figure 2) comprises the electricity energy harvester of at least two classes in solar panel, wind-driven generator or hydroelectric generator, a plurality of electricity energy harvesters are in parallel, each electricity energy harvester is connected with switching tube with a storage capacitor, and output is connected to energy-storage battery by a Boost rectification circuit for voltage stabilizing and adjusting energy collecting efficiency; Described storage capacitor is all with voltage sampling circuit, and terminal voltage value passes to the break-make that described control core is controlled described switching tube.
Embodiment
As shown in Figure 4, the utility model control core adopts the wireless micro treatment module Jennic5139 of ZigBee, and the AD modular converter that this module contains 12,4 tunnel and 2 road PWM output modules meet the demand of utility model.
For each input source, by a multiway analog switch, be connected with control core Yi road AD conversion I/O mouth, detect
v ini voltage, pass in control core, when it reaches threshold value, control core allows corresponding switching tube
sW i conducting, control core detects successively
v ini value, when it reaches threshold value, it is open-minded that control core sends signal
sW i , input source i through Boost circuit to energy-storage battery or load supplying, when
v ini be 0 or through one-period after the time, turn-off
sW i , control core detects next voltage
v ini+1 , continue above-mentioned circulation.When a switching tube conducting, other switching tube is in off state, and corresponding input source, to capacitances to supply power, has been avoided energy loss.
Because switching tube only has a conducting at synchronization, therefore only have an energy source to load or energy-storage battery power supply at every turn.Output is with current sampling circuit, with electric current, represent power output, current sample is converted to voltage measurement Jie Yi road AD conversion I/O mouth by an additional small resistor, and control core calculates power output, and and the power output comparison of last time, thereby realize maximal power tracing strategy.
Energy acquisition module output is connected with energy-storage battery, so output voltage is substantially constant, and is known by Boost circuit theory
u in =
u out (1-D), energy acquisition module output voltage and duty ratio are inversely proportional to, and according to the U/I curve of acquisition module output, know by regulating duty ratio, can make power output maintain maximum power, control strategy as shown in Figure 3, regulate duty ratio with regard to indirect regulation voltage.Certainly, above-mentioned control strategy is habitual means for a person skilled in the art, in prior art, can have other mode.
The energy that energy acquisition module collects is transferred in energy-storage battery by intelligent control module, intelligent control module is by detecting battery voltage information, charging when energy-storage battery is since 0 value or is less than particular value, control energy and store in energy-storage battery and go always, until it is saturated to reach battery electric quantity.When even cell voltage has excess energy control unit also can disconnect charging circuit during higher than particular value.Can reduce charging times like this, extend battery.In order to prevent the battery degree of depth from putting a little, reduce useful life, when energy-storage battery voltage drop is stopped power supply during to particular value.
Two of power supply management module by being keyed on two input serial ports of control core, and two button representative voltage increase button and voltage subtracts button.Initial condition is that output voltage maintains 5V, and the comparative voltage of the acquiescence of control core is also 5V, determines the duty ratio of the PWM ripple of output by the ratio of sampling and outputting voltage and comparative voltage, by regulating recently regulated output voltage of duty.When having n voltage to add actuation of keys generation, the comparative voltage of acquiescence becomes 5+n, repeats said process and makes voltage stabilization to required voltage, subtracts button for n time in like manner.
Claims (5)
1. a wireless sensor network node power supply for energy acquisition more than, is characterized in that: it comprises energy acquisition module, discharges and recharges control module, power supply management module and the control core that is connected with above-mentioned three; Energy acquisition module comprises the electricity energy harvester of at least two classes in solar panel, wind-driven generator or hydroelectric generator, a plurality of electricity energy harvesters are in parallel, each electricity energy harvester is connected with switching tube with a storage capacitor, and output is connected to energy-storage battery by a Boost rectification circuit for voltage stabilizing and adjusting energy collecting efficiency; Described storage capacitor is all with voltage sampling circuit, and terminal voltage value passes to the break-make that described control core is controlled described switching tube.
2. the wireless sensor network node power supply of many energy acquisitions as claimed in claim 1, is characterized in that: the turn-on and turn-off of the rectification circuit of described energy acquisition module are by control core, to export PWM ripple to control.
3. the wireless sensor network node power supply of many energy acquisitions as claimed in claim 1, is characterized in that: the described control module that discharges and recharges, and energy-storage battery adopts lithium battery; Lithium battery passes to control centre with voltage sampling circuit, and terminal voltage size determines the charging and discharging state of lithium battery.
4. the wireless sensor network node power supply of many energy acquisitions as claimed in claim 1, is characterized in that: described power supply management module energy source is energy-storage battery, by a stepping-up/stepping-down chopper circuit, makes output voltage stabilization and load matched.
5. the wireless sensor network node power supply of many energy acquisitions as claimed in claim 1, it is characterized in that: the wireless micro treatment module Jennic5139 of ZigBee that described control core is radio sensing network, use node to carry micro treatment module rather than add in addition a new control chip, control core is powered by energy-storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320277157.XU CN203415999U (en) | 2013-05-21 | 2013-05-21 | Multi-energy acquisition node power supply for wireless sensor network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320277157.XU CN203415999U (en) | 2013-05-21 | 2013-05-21 | Multi-energy acquisition node power supply for wireless sensor network |
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| CN203415999U true CN203415999U (en) | 2014-01-29 |
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| CN201320277157.XU Expired - Fee Related CN203415999U (en) | 2013-05-21 | 2013-05-21 | Multi-energy acquisition node power supply for wireless sensor network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712259A (en) * | 2017-02-28 | 2017-05-24 | 淮安信息职业技术学院 | Solar cell system based on wireless sensor network |
| CN108418252A (en) * | 2018-05-17 | 2018-08-17 | 广西大学 | A kind of the mixed tensor collection device and operation method of wireless sensor |
| CN111435794A (en) * | 2019-01-14 | 2020-07-21 | 重庆大学 | Power supply fusion energy storage device and method of multi-source micro-energy collector |
-
2013
- 2013-05-21 CN CN201320277157.XU patent/CN203415999U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106712259A (en) * | 2017-02-28 | 2017-05-24 | 淮安信息职业技术学院 | Solar cell system based on wireless sensor network |
| CN108418252A (en) * | 2018-05-17 | 2018-08-17 | 广西大学 | A kind of the mixed tensor collection device and operation method of wireless sensor |
| CN108418252B (en) * | 2018-05-17 | 2023-08-25 | 广西大学 | Hybrid energy collection device of wireless sensor and operation method |
| CN111435794A (en) * | 2019-01-14 | 2020-07-21 | 重庆大学 | Power supply fusion energy storage device and method of multi-source micro-energy collector |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20140521 |