CN207869408U - A kind of Rechargeable wireless sensor network nodes - Google Patents
A kind of Rechargeable wireless sensor network nodes Download PDFInfo
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- CN207869408U CN207869408U CN201820279555.8U CN201820279555U CN207869408U CN 207869408 U CN207869408 U CN 207869408U CN 201820279555 U CN201820279555 U CN 201820279555U CN 207869408 U CN207869408 U CN 207869408U
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- wireless sensor
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Abstract
A kind of Rechargeable wireless sensor network nodes, including antenna, modulator, demodulator, energy harvesting module, power management module, rechargable power supplies and controller.The network node obtains energy by antenna from space, and is supplied to energy harvesting module；Energy harvesting module provides DC voltage for power management module；Device provides operating voltage and provides charging voltage for rechargable power supplies power management module in order to control.The utility model uses energy harvesting module and rechargeable battery to provide energy jointly for wireless sensor network node, uses battery powered wireless sensor network node compared to existing, has longer service life；Compared to existing passive wireless sensor network node, there is longer operating distance and stronger noise robustness.
Description
Technical field
The utility model is related to a kind of Rechargeable wireless sensor network nodes, belong to electronic radio communication technical field.
Background technology
Wireless sensor network is exactly to be formed by being deployed in a large amount of cheap microsensor node in monitoring region, is passed through
The network system of the self-organizing for the multi-hop that communication is formed, the purpose is to collaboratively perceive, acquire and handle net
It is perceived the information of object in network overlay area, and is sent to observer.Wireless sensor network technology is technology of Internet of things
The design of main composition part, wherein wireless sensor node is the core technology of Design of Wireless Sensor Network technology.
Existing wireless sensor network node mostly uses greatly internal battery power supply, is conducive to obtain longer transmission range
With stronger signal handling capacity, but it is limited to battery life, the working life of this wireless sensor network node is generally
1-3.In many wireless sensor network application fields, such as concrete health monitoring, soil environment monitoring, intelligent grid shaft tower
The wireless sensor network node of monitoring etc., these fields arrangement is not easy to replace battery or to replace cost needed for battery very high, because
This is suitble to the design of wireless sensor network node technology of long term monitoring to be the emphasis of the following wireless sensor technology research.It is passive
Wireless sensor network node is especially suitable for long term monitoring, but the work capacity of this wireless sensor places one's entire reliance upon outside acquisition
Boundary's wireless energy signal, operating distance is short, and noise robustness is poor.
Invention content
The purpose of this utility model is, in order to solve existing wireless sensor network node in chronicity and operating distance etc.
Bottleneck problem existing for aspect proposes a kind of Rechargeable wireless sensor network nodes.
Technical solution of the utility model is as follows, a kind of Rechargeable wireless sensor network nodes, including antenna,
Modulator, demodulator, energy harvesting module, power management module, rechargable power supplies and controller.The input of the antenna terminates
The output end of modulator, the input terminal of an output termination energy harvesting module of antenna, another output termination demodulation of antenna
The input terminal of device；One input terminal of the output termination controller of demodulator；One of the input termination controller of modulator is defeated
Outlet；The input terminal of the output termination power management module of energy harvesting module；One input termination control of power management module
One output end of device；Another input of power management module terminates rechargable power supplies output end；One output end of power management module
Connect one input terminal of controller, the input terminal of another output termination rechargable power supplies.
The network node obtains energy by antenna from space, and is supplied to energy harvesting module；Energy harvesting module
DC voltage is provided for power management module；Device provides operating voltage and is provided for rechargable power supplies power management module in order to control
Charging voltage.
The antenna, the communication of the modulator and demodulator for completing wireless sensor network node, and obtained for energy
Modulus block provides input energy.
The modulator is believed for the output digit signals of controller to be converted to the radio-frequency modulations needed for wireless communication
Number.
The demodulator, for antenna reception radiofrequency signal to be converted to the demodulated base band signal needed for wireless communication.
The energy harvesting module, for providing DC voltage for power management module.
The rechargable power supplies, for storing rechargeable electrical energy and providing discharge voltage for power management module.
The controller meets corresponding communication protocol and control power supply pipe for controlling wireless sensor network node work
It manages module and completes respective inner power distribution.
The power management module has three kinds of charging communication pattern, hybrid power supply communication pattern and charge mode work shapes
State.
When the power management module is in charging communication pattern, when energy management module output voltage is greater than or equal in advance
If when high level, wireless sensor network node is in communications status, and rechargable power supplies are in charged state.
When the power management module is in hybrid power supply communication pattern, preset when energy management module output voltage is less than
High level and when more than or equal to default low level, wireless sensor network node is in communications status, and at rechargable power supplies
In discharge condition.
When the power management module is in charge mode, when energy management output voltage is less than default low level, nothing
Line sensor network nodes communication close function, and rechargable power supplies are in charged state.
Compared with prior art, the beneficial effects of the utility model are, the utility model using energy harvesting module and
Rechargeable battery provides energy for wireless sensor network node jointly, and battery powered wireless sensing is used compared to existing
Device network node has longer service life；Compared to existing passive wireless sensor network node, there is longer work
Make distance and stronger noise robustness.
Description of the drawings
Fig. 1 is the system construction drawing of the utility model；
Fig. 2 is the power management fundamental diagram of the utility model；
Fig. 3 is specific embodiment of the utility model figure.
Specific implementation mode
Specific embodiment of the present utility model is as shown in Figure 3.
As shown in figure 3, a kind of Rechargeable wireless sensor network nodes of the present embodiment include antenna, matching network, times
Voltage rectifier, power switch, reference voltage source, regulator circuit, super capacitor, amplitude shift keying (ASK) modulator, ASK demodulation
Device and micro-control unit (MCU) are constituted.
Corresponding with Tthe utility model system structure chart 1, modulator is ASK modulators, and demodulator is ASK demodulators, control
Device processed is MCU, and rechargable power supplies are super capacitor, and energy harvesting module includes matching network and voltage doubling rectifing circuit, power supply pipe
It includes reference voltage source, power switch and regulator circuit to manage module.
The antenna, the communication of the ASK modulator and demodulators for completing wireless sensor network node, and be matching
Network provides input radio frequency signal.
The matching network is used to complete the power match of antenna and other intermodules, to complete the best of radiofrequency signal
Power receives.
The radiofrequency signal that matching network receives for being pressurized and being converted into subsequent conditioning circuit work by the voltage doubling rectifing circuit
Required DC voltage VR.
The reference voltage source is used to generate the high level VH (2V) and low level VL (1V) needed for power management module, such as
Shown in Fig. 2.
The regulator circuit is used to being converted to power management module output voltage VS into the stable DC electricity needed for MCU work
Press VDD (2V).
The super capacitor is for storing charging voltage VC and release discharge voltage VD.Compared to conventional rechargeable cells and electricity
Hold, ultracapacitor have many advantages, such as stored energy capacitance is big, charge and discharge number up to it is tens thousand of it is secondary, charge and discharge are rapid.
The ASK modulators are transmitted for being converted to the MCU digital signals exported needed for wireless sensor network node
Rf modulated signal；Using backscattered modulation, antenna is directly received into signal reflex and generates modulated signal, there is structure letter
The advantages of list, low-power consumption.
The ASK demodulators are used to for the radiofrequency signal that matching network receives to be converted into the baseband signal needed for MCU controls；
Using non-coherent demodulation (envelope detection method), the advantage is that need not extract carrier information, and circuit is simple, can less examine
Consider channel estimation even to omit, processing complexity reduces, and realizes relatively simple.
The MCU meets corresponding communication protocol ISO18000-6C and control for controlling wireless sensor network node work
Power switch processed completes the selection and combination of different voltages.ISO18000-6C consensus standards can read multiple sensors simultaneously
Node, feature are that speed is fast, and for data rate up to 40kbps~640kbps, function is strong, have a variety of write-protect modes,
High safety.
The power switch is by MCU output VS controls, selection and combination for completing different voltages.When meeting VR >=VH
When condition, voltage VS and charging voltage VC is generated, wireless sensor node completes communication and super capacitor charge function；Work as satisfaction
VH>When VR >=VL conditions, voltage VS and discharge voltage VD is generated, wireless sensor node completes communication and super capacitor electric discharge work(
Energy；When meeting VL>When VR conditions, charging voltage VC is generated, wireless sensor node communication close function and super capacitor are completed
Charge function.
Claims (5)
1. a kind of Rechargeable wireless sensor network nodes, including antenna, modulator, demodulator, energy harvesting module, power supply
Management module, rechargable power supplies and controller, which is characterized in that the input of the antenna terminates the output end of the modulator,
One output of the antenna terminates the input terminal of the energy harvesting module, and another output of the antenna terminates the demodulation
The input terminal of device；The output of the demodulator terminates an input terminal of the controller；The input of the modulator terminates institute
State an output end of controller；The output of the energy harvesting module terminates the input terminal of the power management module；It is described
One input of power management module terminates one output end of controller；Described in another input termination of the power management module
Rechargable power supplies output end；One output of the power management module terminates one input terminal of controller, another output termination
The input terminal of the rechargable power supplies；The network node obtains energy by antenna from space, and the energy is supplied to obtain
Modulus block；The energy harvesting module provides DC voltage for the power management module；The power management module is described
Controller provides operating voltage and provides charging voltage for the rechargable power supplies.
2. a kind of Rechargeable wireless sensor network nodes according to claim 1, which is characterized in that the power supply pipe
Managing module has three kinds of charging communication pattern, hybrid power supply communication pattern and charge mode working conditions.
3. a kind of Rechargeable wireless sensor network nodes according to claim 2, which is characterized in that the power supply pipe
When managing module in charging communication pattern, when the energy harvesting module output voltage is greater than or equal to default high level, nothing
Line sensor network nodes are in communications status, and the rechargable power supplies are in charged state.
4. a kind of Rechargeable wireless sensor network nodes according to claim 2, which is characterized in that the power supply pipe
Reason module is when be in hybrid power supply communication pattern, when the energy harvesting module output voltage be less than preset high level and be more than or
When equal to default low level, wireless sensor network node is in communications status, and the rechargable power supplies are in discharge condition.
5. a kind of Rechargeable wireless sensor network nodes according to claim 2, which is characterized in that the power supply pipe
When reason module is in charge mode, when energy management output voltage is less than default low level, wireless sensor network node closes
Communication function is closed, and rechargable power supplies are in charged state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820279555.8U CN207869408U (en) | 2018-02-28 | 2018-02-28 | A kind of Rechargeable wireless sensor network nodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820279555.8U CN207869408U (en) | 2018-02-28 | 2018-02-28 | A kind of Rechargeable wireless sensor network nodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207869408U true CN207869408U (en) | 2018-09-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820279555.8U Expired - Fee Related CN207869408U (en) | 2018-02-28 | 2018-02-28 | A kind of Rechargeable wireless sensor network nodes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108337722A (en) * | 2018-02-28 | 2018-07-27 | 华东交通大学 | A kind of Rechargeable wireless sensor network nodes |
| CN111224453A (en) * | 2020-04-16 | 2020-06-02 | 锐迪科微电子（上海）有限公司 | Communication method based on charging wire, charging device, intelligent device and storage medium |
-
2018
- 2018-02-28 CN CN201820279555.8U patent/CN207869408U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108337722A (en) * | 2018-02-28 | 2018-07-27 | 华东交通大学 | A kind of Rechargeable wireless sensor network nodes |
| CN108337722B (en) * | 2018-02-28 | 2024-05-17 | 华东交通大学 | Chargeable formula wireless sensor network node |
| CN111224453A (en) * | 2020-04-16 | 2020-06-02 | 锐迪科微电子（上海）有限公司 | Communication method based on charging wire, charging device, intelligent device and storage medium |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |