CN208386945U - A kind of wake-up circuit for acquiring RF energy for wireless sensor node - Google Patents
A kind of wake-up circuit for acquiring RF energy for wireless sensor node Download PDFInfo
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- CN208386945U CN208386945U CN201820770027.2U CN201820770027U CN208386945U CN 208386945 U CN208386945 U CN 208386945U CN 201820770027 U CN201820770027 U CN 201820770027U CN 208386945 U CN208386945 U CN 208386945U
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Abstract
A kind of wake-up circuit for acquiring RF energy for wireless sensor node, including wireless sensor node main circuit, energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module and wake-up signal processing circuit；The energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module and wake-up signal processing circuit are sequentially connected, and the wake-up signal processing circuit is connect with wireless sensor node main circuit.The energy consumption of wireless sensor node is effectively reduced in the utility model.The wireless charging that itself can be realized in conjunction with the wake-up circuit of RF energy acquisition technique, avoids the consumption limited energy of wireless sensor node, and the utility model can greatly extend the service life of wireless sensor node.
Description
Technical field
The utility model belongs to wireless sense network field, and in particular to a kind of to penetrate for acquiring for wireless sensor node
The wake-up circuit of frequency energy.
Background technique
Wireless sense network (Wireless Sensor Network, referred to as WSN) is based on the overall background of Internet of Things (IoT)
Under, it is widely used in the multiple fields such as military affairs, traffic, environmental monitoring, health care, smart home in recent years.Due to wireless
Sensor node shape is small, the advantages that facilitating arrangement, is at low cost, is often used in some complicated or dangerous environment.It utilizes
Wireless device self-organizing forms communication network, completes the ambient enviroment such as to be monitored work.
However, the energy deficiency problem of wireless sensor devices becomes an important factor for limiting its development.Work as wireless sensing
After device node is arranged in environment, the size of node volume limits the capacity of cells, due to environment and number of nodes
Lamp factor, the cost for replacing battery are sufficiently expensive.Therefore, the life cycle for extending wireless sensor is to influence wireless sensor network
The critical issue of development.
The introducing of sleep awakening mechanism allows wireless sensor node to enter when no data transmission demand or battery can be lower
Sleep pattern can be effectively reduced the power consumption of node.But general wake-up circuit also needs to consume certain energy, combining wireless
The wake-up circuit of energy acquisition directly from the acquisition energy in environment, power for it by the power supply without sensor node, thus into
One step reduces the energy consumption of node, extends the service life of node.
Utility model content
In order to overcome the problems, such as that wireless sensor node cells finite energy limits its service life, the utility model
A kind of wake-up circuit for acquiring RF energy for wireless sensor node is provided.
The utility model adopts the following technical solution:
A kind of wake-up circuit for acquiring RF energy for wireless sensor node, including wireless sensor node master
Circuit further includes energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module and wake-up signal processing circuit；
The energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module and wake-up signal processing circuit are successively
Connection, the wake-up signal processing circuit are connect with wireless sensor node main circuit.
The wireless sensor node main circuit includes sensor, master controller, data transmission antenna and radio communication mold
Block, the master controller are connect with wake-up signal processing circuit and wireless communication module respectively, data transmission antenna and channel radio
Believe module connection.
The energy-storage module is made of super capacitor or rechargeable battery.
The wake-up signal processing circuit includes envelope detector, amplifier, comparator, MCU and interrupts generator, inquiry
Instruction passes sequentially through envelope detector, amplifier and comparator and enters MCU, and MCU outputs signals to interruption generator, further defeated
Interrupt signal out.
The concrete model of the MCU is MSP430.
The utility model has the beneficial effects that
The utility model wake-up signal processing circuit can wake up the main electricity of sensor node according to wake-up period or inquiry instruction
Work is completed on road, is entered sleep pattern in the main functional module of no data transmission demand wireless sensor node, can effectively be dropped
The energy consumption of low wireless sensor node.
The wireless charging that itself can be realized in conjunction with the wake-up circuit of RF energy acquisition technique avoids consumption wireless sensor
The limited energy of node.
Detailed description of the invention
Fig. 1 is structural schematic diagram described in the utility model；
Fig. 2 is the structural schematic diagram of the utility model wake-up signal processing circuit.
Specific embodiment
Below with reference to examples and drawings, the utility model is described in further detail, but the reality of the utility model
It is without being limited thereto to apply mode.
Embodiment
As shown in Figure 1, a kind of wake-up circuit for acquiring RF energy for wireless sensor node, including wirelessly pass
Sensor node main circuit, energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module, wake-up signal processing circuit.
The energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module and wake-up signal processing circuit are successively
Connection, the wake-up signal processing circuit are connect with wireless sensor node main circuit.
The wake-up signal processing circuit is connected with each other with energy-storage module and wireless sensor node main circuit respectively.
The wireless sensor node main circuit includes sensor, master controller, data transmission antenna, power supply and channel radio
Believe module, the sensor connect with master controller and power supply respectively, the master controller respectively with wake-up signal processing circuit
And wireless communication module connection, the data transmission antenna are connect with wireless communication module.
The wake-up signal processing circuit includes envelope detector, amplifier, comparator, super low-power consumption MCU and middle stopping pregnancy
Raw device, the super low-power consumption MCU is respectively at interruption generator and comparator connection, the comparator, amplifier and envelope detection
Device is sequentially connected, the model MSP430 of super low-power consumption MCU.
The energy acceptance antenna is responsible for collecting the RF energy in environment, and match circuit is responsible for completing energy acceptance antenna
With the impedance matching of subsequent conditioning circuit, energy caused by reducing because of impedance mismatch reflects.
Rectification amplifying circuit will carry out rectification amplification from the electromagnetic wave that energy acceptance antenna is passed to, so as to by electromagnetic wave energy
Memory module is stored, while being energized for wake-up signal processing circuit.
The wake-up signal processing circuit is responsible for waking up sensor node main circuit according to wake-up period or inquiry instruction, makes
It switches to working condition, the work such as data acquisition, transmission data, wireless communication from sleep state.
As shown in Fig. 2, wake-up signal processing circuit specific workflow is as follows: the inquiry that wireless communication module will receive
Instruction input wake-up signal processing circuit, inquiry instruction are surpassed by envelope detector, amplifier, comparator and super low-power consumption MCU
Low-power consumption MCU interrupts generator and generates interrupt signal according to inquiry instruction, control, and interrupt signal can pass to master controller, by it
It is waken up from sleep state.In the process, energy-storage module is the power supply of wake-up signal processing circuit always.
The course of work of the utility model:
After energy acceptance antenna collects the RF energy of special frequency channel in environment, rectified amplifying circuit is passed to
Energy-storage module.The RF energy that can be collected into super capacitor or rechargeable battery storage in energy-storage module.It is deposited in energy-storage module
The energy stored up can power for wake-up signal processing circuit.Wake-up circuit can wake up sensor according to wake-up period or inquiry instruction
Node main circuit completes work, enters sleep pattern in the main functional module of no data transmission demand wireless sensor node,
To which the energy consumption of wireless sensor node be effectively reduced.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by described
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (5)
1. a kind of wake-up circuit for acquiring RF energy for wireless sensor node, including the main electricity of wireless sensor node
Road, which is characterized in that further include energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module and wake-up signal processing
Circuit；
The energy acceptance antenna, match circuit, rectification amplifying circuit, energy-storage module and wake-up signal processing circuit successively connect
It connects, the wake-up signal processing circuit is connect with wireless sensor node main circuit.
2. wake-up circuit according to claim 1, which is characterized in that the wireless sensor node main circuit includes sensing
Device, master controller, data transmission antenna and wireless communication module, the master controller respectively with wake-up signal processing circuit and nothing
The connection of line communication module, data transmission antenna are connect with wireless communication module.
3. wake-up circuit according to claim 1, which is characterized in that the energy-storage module is by super capacitor or chargeable electricity
Pond is constituted.
4. wake-up circuit according to claim 1, which is characterized in that the wake-up signal processing circuit includes envelope detection
Device, amplifier, comparator, MCU and interrupt generator, inquiry instruction pass sequentially through envelope detector, amplifier and comparator into
Enter MCU, MCU outputs signals to interruption generator, further exports interrupt signal.
5. wake-up circuit according to claim 4, which is characterized in that the concrete model of the MCU is MSP430.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820770027.2U CN208386945U (en) | 2018-05-23 | 2018-05-23 | A kind of wake-up circuit for acquiring RF energy for wireless sensor node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820770027.2U CN208386945U (en) | 2018-05-23 | 2018-05-23 | A kind of wake-up circuit for acquiring RF energy for wireless sensor node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208386945U true CN208386945U (en) | 2019-01-15 |
Family
ID=64971448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820770027.2U Expired - Fee Related CN208386945U (en) | 2018-05-23 | 2018-05-23 | A kind of wake-up circuit for acquiring RF energy for wireless sensor node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208386945U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351816A (en) * | 2019-05-29 | 2019-10-18 | 郑州大学 | A kind of Internet of things node wakes up reception device and its awakening method |
| CN113490175A (en) * | 2021-07-19 | 2021-10-08 | 哈尔滨工业大学 | Wireless sensing system based on unmanned aerial vehicle awakening and data acquisition and operation method thereof |
-
2018
- 2018-05-23 CN CN201820770027.2U patent/CN208386945U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351816A (en) * | 2019-05-29 | 2019-10-18 | 郑州大学 | A kind of Internet of things node wakes up reception device and its awakening method |
| CN110351816B (en) * | 2019-05-29 | 2021-10-22 | 郑州大学 | Internet of things node awakening receiving device and awakening method thereof |
| CN113490175A (en) * | 2021-07-19 | 2021-10-08 | 哈尔滨工业大学 | Wireless sensing system based on unmanned aerial vehicle awakening and data acquisition and operation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190115 Termination date: 20200523 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |