CN108988509A - Ambient radio-frequency energy collection management and wireless environment parameter acquisition devices and method - Google Patents
Ambient radio-frequency energy collection management and wireless environment parameter acquisition devices and method Download PDFInfo
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- CN108988509A CN108988509A CN201810999840.1A CN201810999840A CN108988509A CN 108988509 A CN108988509 A CN 108988509A CN 201810999840 A CN201810999840 A CN 201810999840A CN 108988509 A CN108988509 A CN 108988509A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
- H02J50/27—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves characterised by the type of receiving antennas, e.g. rectennas
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Abstract
The present invention provides ambient radio-frequency energy collection management and wireless environment parameter acquisition devices and method, is related to microwave electron technical field.The present invention collects the radiofrequency signal in link collection environment by ambient radio-frequency energy, radiofrequency signal is converted into faint voltage signal and carries out impedance matching, rectification and 4 times of boostings, the voltage after boosting is divided into wireless sensor system module through energy management section, energy is provided；Then by the microprocessor in wireless sensor system module by the collected ambient parameter data of external sensor by wireless communication module transfer to terminal.The present invention is to provide one kind not to need wired power supply or battery power supply, it is only necessary to which the radiofrequency signal that 2.4G is absorbed from environment can save time and operation link with for acquisition system power supply, easy to use.
Description
Technical field
The invention belongs to microwave electron technical field more particularly to ambient radio-frequency energy collection management and wireless environment parameters
Acquisition device and method.
Background technique
In recent years, economic rapid development leads to that traditional energy is increasingly depleted, environmental problem is further prominent, new energy technology
Development it is extremely urgent, many new energy harvesting modes obtain more and more attention.In the modern life, with wireless interconnected
The extensive use of net, wireless network terminal equipment are widely used, and obtain the electromagnetic wave energy in environment throughout each of life
A corner.This ambient radio-frequency energy is collected and is applied, is a new energy harvesting mode well.Meanwhile it is modern
The fast development of electronic technology and low-power electronic devices makes low-power electronic devices and the power consumption without line device communication device
It is lower and lower, thus independent use environment RF energy it is self-powered and carry out data acquisition be possibly realized.Current environment
Parameter detection method is required power supply or provides power supply using wired mode or powered using battery.The former, which needs to draw, leads
Line, use condition limitation are more；The latter needs to check power conditions in time, and battery is replaced in timing, and use is comparatively laborious.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above shortcomings of the prior art, provide ambient radio-frequency energy collecting pipe
Reason and wireless environment parameter acquisition devices and method do not need wired power supply or battery power supply, save time and operation link,
It is easy to use.
In order to solve the above technical problems, the present invention takes following technical scheme to realize:
On the one hand, the present invention provides ambient radio-frequency energy collection management and wireless environment parameter acquisition devices, including environment
RF energy collection module, energy management module, ambient parameter data acquisition and wireless transport module；
The ambient radio-frequency energy collection module, including receiving antenna module, matching circuit module, voltage doubling rectifing circuit mould
Block；The 2x2 micro-strip antenna array for the high-gain that the receiving antenna module is made of four groups of microband antenna units and two
Quarter wavelength impedance transducer constitutes antenna part, is responsible for collecting RF energy；The matching circuit module, for adjusting
Save overall impedance；The voltage doubling rectifing circuit module is formed using two groups of opposite polarity Greinacher electrical combinations, is used for
By input voltage quadruplication；
The energy management module, including level-one energy storage, boost module, second level energy storage；The level-one energy storage is for storing
Energy, energy are that capacitance voltage value rises to voltage identical with voltage doubling rectifing circuit full of mark；The boost module is used for
It is full whether monitoring level-one energy storage stores up, and energy-transmission channel is completely opened in storage, boosts to the voltage of level-one energy storage output, is lower than one
After determining threshold value, signal can be issued to microprocessor, it is enabled to enter low-power consumption mode to reduce load current, prevented from entering and owe
Pressure condition；The second level energy storage is for providing stable rated operational voltage for wireless sensor system, to ensure that system is stablized
Work；
The ambient parameter data acquisition and wireless transport module, including wireless sensor system module, wireless transmission mould
Block；The wireless sensor system module is made of microprocessor, sensor interface, energy steering circuit three parts；Micro process
Device is the core cell of wireless sensor system module, is controlled for sensor data acquisition, processing and wireless transmission；Sensor
Interface is the physical interface of sensor, for connecting sensor；Energy steering circuit realizes power supply management and the control of system；Institute
State data wireless transmission of the wireless transport module for sensor acquisition；
Receive Anneta module to be connected by SMA interface with multiplication of voltage sorting module；Multiplication of voltage finishing circuit module passes through 2 line conductors
It is connected with level-one energy storage；Level-one energy storage is connected by switch with boost module；Boost module is connected by conducting wire with second level energy storage；
Second level energy storage is connected by conducting wire with microprocessor；Microprocessor is connected by SPI with wireless transport module, and single wire digital is passed through
Interface is connected with Temperature Humidity Sensor, is connected by A D interface with illuminance transducer.
On the other hand, the present invention also provides using the ambient radio-frequency energy collection management and wireless environment parameter acquisition
Device realizes ambient radio-frequency energy collection management and wireless environment parameter collecting method, comprising the following steps:
Step 1: ambient radio-frequency energy collects link；Receive Anneta module and receive radiofrequency signal in environment, and by radio frequency
Signal is converted into faint voltage signal and exports to matching circuit module；By matching circuit module carry out impedance matching after export to
Voltage doubling rectifier module carries out rectification and 4 times of boostings, output to energy management part；
Step 2: energy management part；Voltage doubling rectifing circuit module output voltage is to level-one energy storage；Level-one energy-storage module is received
When collecting enough energy, automatic switch is opened, output voltage to boost module；Boost module is by the output voltage of level-one energy storage
Boost to 3.54 volts of outputs；The voltage of boost module output is stored into second level energy-storage module, by voltage transmission after energy storage
To wireless sensor system module；
Step 3: ambient parameter data acquisition and wireless transmission；Voltage in second level energy storage is wireless sensor system module
Energy is provided, and power supply is managed and is controlled by energy steering circuit, is then acquired external sensor by microprocessor
The ambient parameter data arrived by wireless communication module transfer to terminal.
The beneficial effects of adopting the technical scheme are that a kind of ambient radio-frequency energy provided by the invention is collected
Management and wireless environment parameter collecting method do not need wired power supply or battery power supply, it is only necessary to 2.4G is absorbed from environment
Radiofrequency signal can save time and operation link with for acquisition system power supply, it is easy to use, and wirelessly send out
Receiving end is given, to realize a kind of passive environmental parameter acquisition system powered and be wirelessly transferred.
Detailed description of the invention
Fig. 1 is ambient radio-frequency energy collection management provided in an embodiment of the present invention and wireless environment parameter acquisition devices process
Figure；
Fig. 2 is rectangular microstrip antenna structure chart provided in an embodiment of the present invention；Wherein, 1, feeder line；2, radiation patch；3, ginseng
Examine ground；
Fig. 3 is voltage doubling rectifing circuit figure provided in an embodiment of the present invention；
Fig. 4 is BQ25570 boost module provided in an embodiment of the present invention and component parameter schematic diagram；
Fig. 5 is MSP430F4152 circuit design drawing provided in an embodiment of the present invention；Wherein, (a) is MSP430F4152 electricity
Road site-plan；(b) the power supply filter circuit figure for being MSP430F4152；(c) the reset circuit figure for being MSP430F4152；(d)
For the JTAG debugging interface and serial interface of MSP430F4152；(e) indicator light and key circuit for being MSP430F4152；(f)
For the power interface of MSP430F4152；
Fig. 6 is wireless communication module schematic diagram provided in an embodiment of the present invention；
Fig. 7 is wireless sensor system modular program flow chart provided in an embodiment of the present invention；Wherein, (a) is main program
Flow chart；It (b) is timer interrupt service function flow chart；
Fig. 8 is the inquiry mode flow chart that radio receiving terminal provided in an embodiment of the present invention receives that data use；
Fig. 9 is data provided in an embodiment of the present invention display figure；Wherein, (a) is wireless sensor monitoring platform；(b) it is
The temperature profile of temperature sensor；It (c) is illumination variation figure in optical sensor measuring chamber；It (d) is temperature and humidity variation diagram；
It (e) is wireless sensor monitoring platform data query figure.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
The method of the present embodiment is as described below.
On the one hand, the present invention provides ambient radio-frequency energy collection management and wireless environment parameter acquisition devices, such as Fig. 1 institute
Show, including the acquisition of ambient radio-frequency energy collection module, energy management module, ambient parameter data and wireless transport module；
The ambient radio-frequency energy collection module, including receiving antenna module, matching circuit module, voltage doubling rectifing circuit mould
Block；The 2x2 micro-strip antenna array for the high-gain that the receiving antenna module is made of four groups of microband antenna units and two
Quarter wavelength impedance transducer constitutes antenna part, as shown in Fig. 2, being responsible for collecting RF energy；
Antenna element combination uses the face formation formula of parallelly feeding, and for match circuit and improves efficiency of transmission,
T-type connection is carried out using a quarter impedance transformer and to it, and Parameters Optimal Design has been carried out to this array, is obtained
Highly sensitive receiving antenna array；The array improves the receipts to energy compared with existing RF energy collection system
Collection ability.
The matching circuit module, for adjusting overall impedance；In order to enable efficiency of transmission reaches optimal effect, multiplication of voltage
Addition impedance matching circuit is had between rectification circuit module and receiving antenna module, for high-frequency circuit, microstrip antenna is defeated
Impedance is 50 Ω out, so needing the circuit of an adjusting overall impedance, impedance matching hinders the input of voltage doubling rectifing circuit
Resist for 50 Ω；
The voltage doubling rectifing circuit module；The voltage doubling rectifing circuit that the present embodiment uses uses Greinacher circuit and sets
Thinking is counted, is formed using two groups of opposite polarity Greinacher electrical combinations, is used for input voltage quadruplication；Such as Fig. 3
It is shown；
The energy management module, including level-one energy storage, boost module, second level energy storage；
The level-one energy storage is used for storage energy, although voltage multiplying rectifier output has very high voltage, its electricity exported
It flows very faint, boost chip work can not be supplied directly to, it is therefore desirable to level-one energy storage stores the energy that front end is collected into,
Level-one stores up the voltage that getable ceiling voltage is voltage doubling rectifing circuit output, this voltage value is unable to satisfy electronic component institute work
The voltage rating of work needs to boost to this；It is identical with voltage doubling rectifing circuit that energy full of mark is that capacitance voltage value rises to
Voltage；
The boost module, the present embodiment use BQ25570 chip, as shown in figure 4, level-one energy storage can be exported
120mV voltage value rises to 3.54V, for monitoring whether level-one energy storage stores up full, storage completely opening energy-transmission channel, to level-one storage
The voltage that can be exported boosts, and lower than after certain threshold value, can issue signal to microprocessor and it be enabled to enter low-power consumption mode
To reduce load current, prevent from entering under-voltage condition；
The second level energy storage is for providing stable rated operational voltage for wireless sensor system, to ensure that system is stablized
Work；
As shown in figure 4, VIN is voltage multiplying rectifier input interface in the present embodiment in figure；Left side VIN is that boost module input connects
Mouth is used to test use；JP1 4 is MPPT maximum power point tracking partial pressure setting selection；JP2 is that the work of boost module boost chip makes
It can control, connect the work of GND boost module；6 lowering and stabilizing blood pressure of JP3 makes can control, and connects the work of VSTOR lowering and stabilizing blood pressure module, GND drop
Pressure Voltage stabilizing module work is forbidden, and connects VBAT_OK according to its output and judges whether work；VSTOR is boosting output interface；VBAT
For battery management circuit voltage output；VOUT is decompression conversion module voltage output.
The ambient parameter data acquisition and wireless transport module, including wireless sensor system module, wireless transmission mould
Block；The wireless sensor system module is made of microprocessor, sensor interface, energy steering circuit three parts；Micro process
Device is the core cell of wireless sensor system module, is controlled for sensor data acquisition, processing and wireless transmission；Sensor
Interface is the physical interface of sensor, for connecting sensor；Energy steering circuit realizes power supply management and the control of system；This
Processor chooses core processing list of the MSP430 low-power microprocessor of TI company research and development as wireless sensor in embodiment
Member；Energy steering circuit realizes power supply management and the control of system；
As shown in figure 5, JTAG interface circuit, it is mainly used to program code downloading and in-circuit emulation, in-circuit emulation can be with
The process that real time inspection program executes；LED light is used to refer to working condition, mainly uses in debugging；External key function
Can, for the parameter of wireless sensor system is arranged.
Data wireless transmission of the wireless transport module for sensor acquisition；Wireless transport module selection
NRF24L01 as shown in Figure 6 and attached two analog interfaces, a SPI interface, two single bus interfaces, an I2C connects
Mouth is for various kinds of sensors interface communication；When standby mode, MSP430 enters low-power consumption mode (LPM3), to save energy, energy
Periodically data acquisition and wireless transmission is reached, the design is equipped with analog sensor interface and number in the present embodiment
Sensor interface, using SPI communication agreement, I2Four kinds of C communication protocol, serial communication protocol, monobus lin protocol communications protocol.
Receive Anneta module to be connected by SMA interface with multiplication of voltage sorting module；Multiplication of voltage finishing circuit module passes through 2 line conductors
It is connected with level-one energy storage；Level-one energy storage is connected by switch with boost module；Boost module is connected by conducting wire with second level energy storage；
Second level energy storage is connected by conducting wire with microprocessor；Microprocessor is connected by SPI with wireless transport module, and single wire digital is passed through
Interface is connected with Temperature Humidity Sensor, is connected by A D interface with illuminance transducer.
On the other hand, the present invention also provides using the ambient radio-frequency energy collection management and wireless environment parameter acquisition
Device realizes ambient radio-frequency energy collection management and wireless environment parameter collecting method, comprising the following steps:
Step 1: ambient radio-frequency energy collects link；Receive Anneta module and receive radiofrequency signal in environment, and by radio frequency
Signal is converted into faint voltage signal and exports to matching circuit module；By matching circuit module carry out impedance matching after export to
Voltage doubling rectifier module carries out rectification and 4 times of boostings, output to energy management part；
Step 2: energy management part；Voltage doubling rectifing circuit module output voltage is to level-one energy storage；Level-one energy-storage module is received
When collecting enough energy, automatic switch is opened, output voltage to boost module；Boost module is by the output voltage of level-one energy storage
Boost to 3.54 volts of outputs；The voltage of boost module output is stored into second level energy-storage module, by voltage transmission after energy storage
To wireless sensor system module；
Step 3: ambient parameter data acquisition and wireless transmission；Voltage in second level energy storage is wireless sensor system module
Energy is provided, and power supply is managed and is controlled by energy steering circuit, it is then by microprocessor that sensor is collected
Ambient parameter data by wireless communication module transfer to terminal；
Ambient radio-frequency energy is collected there are two types of the acquisition modes of link: the first is estimation period capacitor recovery time；The
Two kinds are the voltage that capacitor is acquired by AD, due to needing to calculate capacitance voltage automatic recovery time, so in the present embodiment
It first carries out initialization clock, timer, sensor as shown in a figure in Fig. 7 using timer timing mode in program and opens
Qi is always interrupted, and subsequently into low-power consumption mode, chip enters battery saving mode, and power consumption is lower than 33 μ W, during this period of time, radio frequency energy
It measures collection module and collects energy；After energy collection module gets certain energy, when exporting 3.54v voltage value, low-power consumption is exited
Mode, start sensor acquisition data and data transmission, after be again introduced into low-power consumption mode.Timer interrupt service letter
Number, as shown in b figure in Fig. 7, the working method of wireless sensor system is arranged according to key；It is set as triggering a number manually
According to acquisition either according to the time cycle come automatic data collection, terminal is then transferred data to.
As shown in figure 8, radio receiving terminal receive data using inquiry by the way of: initialize system, inquire always whether
There is data transmission, data are received if there are data, receiving Data Labels position is 1, and expression receives new data, then will be counted
According to decoding and computer is transferred data to by serial ports；Upper computer software uses LabVIEW software design system in the present embodiment
Make.
As shown in figure 9, data buffer zone is that the frame data that host computer receives are shown in figure a, the data of middle section
Table is each sensing data storage format；Figure b show the temperature curve variation of temperature sensor, will survey in sensor holding chamber
Temperature is obtained, then by sensor holding chamber external pelivimetry temperature change, final stage is sensor measurement electric iron temperature nearby
Temperature change；Scheming c is illumination variation in optical sensor measuring chamber, and when measuring illumination indoors, measurement data has small wave
It is dynamic.Temperature and humidity variation, the model AM2301 of Temperature Humidity Sensor, with 0.1% measurement accuracy is shown in figure d；It is aobvious to scheme e
What is shown is data query, and the data that the data storage each sensor of essential record is measured in different date and times can be used as
Data analysis is used.
Eventually by experiment, in laboratory under WiFi radiofrequency signal environment, can be realized carry out in 60s data acquisition and
Wireless data transmission, at the same 60s in collect energy be greater than consumed energy, can periodically data acquisition and
Wireless transmission.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment, or some or all of the technical features are equal
Replacement；And these are modified or replaceed, model defined by the claims in the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (2)
1. a kind of ambient radio-frequency energy collection management and wireless environment parameter acquisition devices, it is characterised in that: including ambient radio-frequency
Energy collection module, energy management module, ambient parameter data acquisition and wireless transport module；
The ambient radio-frequency energy collection module, including receiving antenna module, matching circuit module, voltage doubling rectifing circuit module；
The 2x2 micro-strip antenna array for the high-gain that the receiving antenna module is made of four groups of microband antenna units and two four points
One of wavelength impedance transformers constitute antenna part, be responsible for collect RF energy；The matching circuit module, it is whole for adjusting
Body impedance；The voltage doubling rectifing circuit module is formed using two groups of opposite polarity Greinacher electrical combinations, can will be defeated
Enter four times of voltage amplification；
The energy management module, including level-one energy storage, boost module, second level energy storage；The level-one energy storage is used for storage energy,
Energy is that capacitance voltage value rises to voltage identical with voltage doubling rectifing circuit full of mark；The boost module is for monitoring one
It is full whether grade energy storage stores up, and energy-transmission channel is completely opened in storage, boosts to the voltage of level-one energy storage output, is lower than certain threshold value
Later, signal can be issued to microprocessor enables it enter low-power consumption mode to reduce load current, prevents from entering under-voltage condition；
The second level energy storage is for providing stable rated operational voltage for wireless sensor system, to ensure system steady operation；
The ambient parameter data acquisition and wireless transport module, including wireless sensor system module, wireless transport module；Institute
Wireless sensor system module is stated to be made of microprocessor, sensor interface, energy steering circuit three parts；Microprocessor is nothing
The core cell of line sensing system module is controlled for sensor data acquisition, processing and wireless transmission；Sensor interface is
The physical interface of sensor, for connecting sensor；Energy steering circuit realizes power supply management and the control of system；It is described wireless
Data wireless transmission of the transmission module for sensor acquisition；
Receiving antenna module is connected by SMA interface with multiplication of voltage sorting module；Multiplication of voltage finishing circuit module passes through 2 line conductors and one
Grade energy storage is connected；Level-one energy storage is connected by switch with boost module；Boost module is connected by conducting wire with second level energy storage；Second level
Energy storage is connected by conducting wire with microprocessor；Microprocessor is connected by SPI with wireless transport module, and single wire digital interface is passed through
It is connected with Temperature Humidity Sensor, is connected by A D interface with illuminance transducer.
2. realizing that environment is penetrated with wireless environment parameter acquisition devices using ambient radio-frequency energy collection management described in claim 1
The management of frequency collection of energy and wireless environment parameter collecting method, it is characterised in that: the following steps are included:
Step 1: ambient radio-frequency energy collects link；Receiving antenna module receives the radiofrequency signal in environment, and by radiofrequency signal
Faint voltage signal is converted into export to matching circuit module；It exports after carrying out impedance matching by matching circuit module to multiplication of voltage
Rectification module carries out rectification and 4 times of boostings, output to energy management part；
Step 2: energy management part；Voltage doubling rectifing circuit module output voltage is to level-one energy storage；Level-one energy-storage module is collected into
When enough energy, automatic switch is opened, output voltage to boost module；Boost module boosts the output voltage of level-one energy storage
It is exported to 3.54 volts；The voltage of boost module output is stored into second level energy-storage module, by voltage transmission to nothing after energy storage
Line sensing system module；
Step 3: ambient parameter data acquisition and wireless transmission；Voltage in second level energy storage provides for wireless sensor system module
Energy, and power supply is managed and is controlled by energy steering circuit, then by microprocessor by the collected environment of sensor
Supplemental characteristic by wireless communication module transfer to terminal.
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| CN111465056B (en) * | 2020-04-07 | 2023-04-07 | 电子科技大学 | Environment sensing system based on energy-carrying communication technology |
| CN111628576A (en) * | 2020-05-12 | 2020-09-04 | 西安交通大学 | Radio frequency energy collection system |
| CN113381519B (en) * | 2021-04-20 | 2023-11-10 | 中南民族大学 | Low-power-consumption indoor autonomous energy acquisition system |
| CN113381519A (en) * | 2021-04-20 | 2021-09-10 | 中南民族大学 | Low-power-consumption indoor autonomous energy acquisition system |
| CN114189028A (en) * | 2021-12-07 | 2022-03-15 | 四川启睿克科技有限公司 | Internet of things passive block chain data acquisition device and data acquisition method |
| CN114545634A (en) * | 2022-02-24 | 2022-05-27 | 北京京东方技术开发有限公司 | Intelligent glasses |
| CN115412132B (en) * | 2022-07-19 | 2023-08-18 | 四川化工职业技术学院 | Hardware safety type Zigbee terminal based on environment energy supply |
| CN115412132A (en) * | 2022-07-19 | 2022-11-29 | 四川化工职业技术学院 | Hardware safety type Zigbee terminal based on energy supply of environment energy |
| WO2024055532A1 (en) * | 2022-09-13 | 2024-03-21 | 深圳市每开创新科技有限公司 | Passive electronic device, micro-energy acquisition method, and energy storage method |
| CN116528338B (en) * | 2023-03-13 | 2023-10-13 | 山东领能电子科技有限公司 | Energy collection internet of things chip, working method and communication equipment |
| CN116528338A (en) * | 2023-03-13 | 2023-08-01 | 山东领能电子科技有限公司 | Energy collection internet of things chip, working method and communication equipment |
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Application publication date: 20181211 |