CN106292370A - A kind of wireless sensor node - Google Patents
A kind of wireless sensor node Download PDFInfo
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- CN106292370A CN106292370A CN201610820893.3A CN201610820893A CN106292370A CN 106292370 A CN106292370 A CN 106292370A CN 201610820893 A CN201610820893 A CN 201610820893A CN 106292370 A CN106292370 A CN 106292370A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
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Abstract
nullThis application provides a kind of wireless sensor node，Energy acquisition antenna gathers the second radio-frequency (RF) energy，Described second radio-frequency (RF) energy is converted to electric energy and is stored in described off-chip printing-type electric capacity by radio-frequency (RF) energy Acquisition Circuit，Described off-chip printing-type electric capacity is connected with analog front circuit with described radio frequency，Send described electric energy to described radio frequency and analog front circuit，Described radio frequency and analog front circuit can be described temperature sensor、Described humidity sensor interface circuit、Described EEPROM、Described radio frequency and analog front circuit、Described process circuit and described radio-frequency (RF) energy Acquisition Circuit are powered，Described temperature sensor and described humidity sensor can gather data，It is no longer after communication antenna receives the first radio-frequency (RF) energy，Sensor information could be gathered，Solve the problem that can not actively gather sensor information.
Description
Technical field
The present invention relates to sensor control field, in particular, relate to a kind of wireless sensor node.
Background technology
Passive ultra-high frequency REID has low cost, identifies the advantages such as distance is remote, recognition speed is fast, in recent years by
It is widely used in the fields such as clothing, asset management, logistics, temperature, moisture measurement, applies when temperature, moisture measurement field, will
Passive ultra-high frequency identification label chip and sensor combine, on a single die integrated sensor and passive ultra-high frequency identification
Tag circuit.In work process, after needing antenna to receive the radio-frequency (RF) energy of reader, sensor information and transmitting could be gathered
Radiofrequency signal, it is impossible to actively gather sensor information.Therefore, a kind of device that can actively gather sensor information is needed badly.
Summary of the invention
In view of this, the present invention provides a kind of wireless sensor node, must not actively gather sensor information with solution
Problem.
For solving above-mentioned technical problem, present invention employs following technical scheme:
A kind of wireless sensor node, described wireless sensor node includes:
Communication antenna, energy acquisition antenna, radio frequency and analog front circuit, process circuit, electric erazable programmable is read-only deposits
Reservoir, temperature sensor, humidity sensor, humidity sensor interface circuit, off-chip printing-type electric capacity and radio-frequency (RF) energy gather electricity
Road；Described radio frequency passes with analog front circuit, described process circuit, described EEPROM, described temperature
Sensor, described humidity sensor interface circuit and described radio-frequency (RF) energy Acquisition Circuit are arranged on the same chip, described communication sky
Line, described energy acquisition antenna, described humidity sensor and described off-chip printing-type electric capacity are arranged on label；Described communication sky
Line, described off-chip printing-type electric capacity, described process circuit, described EEPROM, described humidity sensor
Interface circuit, described temperature sensor and described radio-frequency (RF) energy Acquisition Circuit are respectively with described radio frequency with analog front circuit even
Connect；Described radio frequency and analog front circuit, described EEPROM, described temperature sensor and described humidity
Sensor interface circuitry is connected with described process circuit respectively；Described energy acquisition antenna and described off-chip printing-type electric capacity are respectively
It is connected with described radio-frequency (RF) energy Acquisition Circuit；Described humidity sensor is connected with described humidity sensor interface circuit；
Described communication antenna, for receiving the first radio-frequency (RF) energy and radiofrequency signal；
Described energy acquisition antenna, for gathering the second radio-frequency (RF) energy；
Described radio-frequency (RF) energy Acquisition Circuit, for described second radio-frequency (RF) energy is converted to electric energy, and passes described electric energy
It is defeated by described off-chip printing-type electric capacity；
Described off-chip printing-type electric capacity, is used for storing described electric energy, and described electric energy is transferred to described radio frequency and simulation
Front-end circuit；
Described radio frequency and analog front circuit, described in being converted to DC source, utilizing by described first radio-frequency (RF) energy
DC source or described electric energy are described temperature sensor, described humidity sensor interface circuit, described electric erazable programmable
Read memorizer, described radio frequency is powered with analog front circuit, described process circuit and described radio-frequency (RF) energy Acquisition Circuit；By described
Radiofrequency signal is demodulated into low-frequency digital signal and described low-frequency digital signal is sent to described process circuit；Generation clock is believed
Number and reset signal described clock signal and described reset signal are sent to described process circuit；
Described temperature sensor, for measuring the temperature information of label, is converted into digital signal by temperature information, and by institute
State digital signal and be sent to described process circuit；
Described humidity sensor, for being converted into capacitance by the humidity information of label；
Described humidity sensor interface circuit, is used for reading described capacitance, and described capacitance is sent to described place
Reason circuit；
Described process circuit, for the temperature receiving described digital signal and described capacitance, read in described digital signal
Described temperature value and described capacitance are also stored in described EEPROM by angle value；Read described electricity
Described temperature value and described capacitance in EPROM, described capacitance is converted to rh value,
And described rh value and described temperature value are carried out temperature-compensating, the rh value after being corrected and the temperature after correction
Angle value that the rh value after described correction and the temperature value after described correction are stored in described electric erazable programmable is read-only
In memorizer；Receive described low-frequency digital signal and carry out read and write information operating；Receive described clock signal and described reset
Signal；
Described EEPROM, after storing described temperature value, described capacitance, described correction
Temperature value after rh value and described correction.
Preferably, described radio frequency and analog front circuit, including:
Biasing circuit, radio frequency matching network circuit, clock produce circuit, radio frequency rectification circuit and nothing with reseting controling signal
Line data transmit-receive circuit；
Described radio frequency rectification circuit, described wireless data transceiving circuit are connected with described radio frequency matching network circuit respectively；
It is whole that described biasing circuit and described radio frequency matching network circuit, described clock and reseting controling signal produce circuit, described radio frequency
Current circuit, described wireless data transceiving circuit, described EEPROM, described process circuit, described temperature
Sensor, described humidity sensor interface circuit, described radio-frequency (RF) energy Acquisition Circuit connect respectively；Described wireless data transceiving electricity
Road, described clock produce circuit with reseting controling signal and are connected with described process circuit respectively；
Described radio frequency matching network circuit, for being connected with described communication antenna, receives described first radio-frequency (RF) energy and institute
State radiofrequency signal；
Described radio frequency rectification circuit, for receiving described first radio-frequency (RF) energy of described radio frequency matching network circuit output also
Described first radio-frequency (RF) energy is converted into DC source, and gives described biasing circuit by described transmitting DC；
Described biasing circuit, is used for receiving described DC source, and connects for described temperature sensor, described humidity sensor
Mouthful circuit, described EEPROM, described radio frequency and analog front circuit, described process circuit and described penetrate
Frequently energy acquisition circuit is powered；
Described wireless data transceiving circuit, for receive described radio frequency matching network circuit output described radiofrequency signal,
Described radiofrequency signal is demodulated into low-frequency digital signal, and described low-frequency digital signal is sent to described process circuit；
Described clock produces circuit with reseting controling signal, is used for producing clock signal and reset signal, and by time described
Clock signal and described reset signal are sent to described process circuit.
Preferably, described energy acquisition antenna includes that off-chip prints GSM-900 band antenna.
Preferably, described radio-frequency (RF) energy Acquisition Circuit, including:
GSM-900 frequency range radio frequency matching network circuit and rectifier boost charging circuit；Described GSM-900 frequency range radio-frequency match
Lattice network is connected with described rectifier boost charging circuit；
Described GSM-900 frequency range radio frequency matching network circuit, for being connected with off-chip printing GSM-900 band antenna, connects
Receive described second radio-frequency (RF) energy, and be sent to described rectifier boost charging circuit；
Described rectifier boost charging circuit, for being connected with described off-chip printing-type electric capacity, receives described second radio frequency energy
Amount, and described second radio-frequency (RF) energy is converted into electric energy, and described electric energy is sent to described off-chip printing-type electric capacity.
Preferably, described process circuit, it is additionally operable to:
Control described EEPROM, described temperature sensor and described humidity sensor to start.
Preferably, EEPROM described in described processing circuit controls starts, specifically for:
Read memory command or memory write order is sent to described EEPROM.
Preferably, temperature sensor described in described processing circuit controls and described humidity sensor start, specifically for:
Enabling signal is sent to described temperature sensor and described humidity sensor.
Preferably, described process circuit includes digital communication agreement and data processing circuit.
Preferably, described humidity sensor includes off-chip printing-type humidity sensor.
Preferably, described communication antenna includes that off-chip prints SHF communication antenna.
Compared to prior art, the method have the advantages that
The invention provides a kind of wireless sensor node, energy acquisition antenna gathers the second radio-frequency (RF) energy, radio-frequency (RF) energy
Described second radio-frequency (RF) energy is converted to electric energy and is stored in described off-chip printing-type electric capacity, described off-chip printing by Acquisition Circuit
Formula electric capacity is connected with analog front circuit with described radio frequency, and described electric energy sends to described radio frequency and analog front circuit, institute
State radio frequency and analog front circuit can be described temperature sensor, described humidity sensor interface circuit, described electrically erasable can
Program read-only memory, described radio frequency are powered with analog front circuit, described process circuit and described radio-frequency (RF) energy Acquisition Circuit,
Described temperature sensor and described humidity sensor can gather data, are no longer after communication antenna receives the first radio-frequency (RF) energy,
Sensor information could be gathered, solve the problem that can not actively gather sensor information.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
The structural representation of the wireless sensor node that Fig. 1 provides for the embodiment of the present invention one；
The radio frequency that Fig. 2 provides for the present invention and the structural representation of analog front circuit；
The structural representation of the wireless sensor node that Fig. 3 provides for the embodiment of the present invention two.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The invention provides a kind of wireless sensor node, with reference to Fig. 1, wireless sensor node includes:
Communication antenna 106, energy acquisition antenna 107, radio frequency and analog front circuit 105, process circuit 104, electrically erasable
Programmable read only memory 103, temperature sensor 102, humidity sensor 101, humidity sensor interface circuit 110, off-chip print
Brush electric capacity 109 and radio-frequency (RF) energy Acquisition Circuit 108；Radio frequency and analog front circuit 105, process circuit 104, electric erasable and programmable
Journey read only memory 103, temperature sensor 102, humidity sensor interface circuit 110 and radio-frequency (RF) energy Acquisition Circuit 108 are arranged
On same chip 1, communication antenna 106, energy acquisition antenna 107, humidity sensor 101 and off-chip printing-type electric capacity 109 set
Put on label.
It should be noted that the operating frequency of chip 1 and super high frequency radio frequency identification international standard ISO18000-6C and EPC
Class-1Generation-2 phase is compatible.
Communication antenna 106, off-chip printing-type electric capacity 109, process circuit 104, EEPROM 103,
Humidity sensor interface circuit 110, temperature sensor 102 and radio-frequency (RF) energy Acquisition Circuit 108 respectively with radio frequency and AFE (analog front end)
Circuit 105 connects；Radio frequency and analog front circuit 105, EEPROM 103, temperature sensor 102 and wet
Degree sensor interface circuitry 110 is connected with process circuit 104 respectively；Energy acquisition antenna 107 and off-chip printing-type electric capacity 109 points
It is not connected with radio-frequency (RF) energy Acquisition Circuit 108；Humidity sensor 101 is connected with humidity sensor interface circuit 110；
Communication antenna 106, for receiving the first radio-frequency (RF) energy and radiofrequency signal；
It should be noted that communication antenna 106 is connected by the way of flip chip bonding with chip 1, communication antenna 106 receives and reads
Read the first radio-frequency (RF) energy and radiofrequency signal that device sends.
Optionally, in another embodiment of the present invention, communication antenna 106 includes that off-chip prints SHF communication antenna.
Concrete, communication antenna 106 includes printing-type 915MHZ ultra-high frequency antenna.
Energy acquisition antenna 107, for gathering the second radio-frequency (RF) energy；
Optionally, in another embodiment of the present invention, energy acquisition antenna 107 includes that off-chip prints GSM-900 frequency range sky
Line.
Concrete, energy acquisition antenna 107 can gather the radio-frequency (RF) energy that frequency range is GSM-900.Energy acquisition antenna 107
It is connected with chip 1 by the way of flip chip bonding.
Radio-frequency (RF) energy Acquisition Circuit 108, for described second radio-frequency (RF) energy is converted to electric energy, and transmits described electric energy
To off-chip printing-type electric capacity 109；
Off-chip printing-type electric capacity 109, is used for storing described electric energy, and described electric energy is transferred to radio frequency and AFE (analog front end) electricity
Road 105；
It should be noted that off-chip printing-type electric capacity 109 is to be made by printed antenna technique, capacitance can be according to specifically
Demand is processed, and off-chip printing-type electric capacity 109 is connected with chip 1 by the way of flip chip bonding.
Radio frequency and analog front circuit 105, for described first radio-frequency (RF) energy is converted to DC source, utilize described directly
Stream power supply or described electric energy are temperature sensor 102, humidity sensor interface circuit 110, EEPROM
103, radio frequency is powered with analog front circuit 105, process circuit 104 and radio-frequency (RF) energy Acquisition Circuit 108；By described radiofrequency signal
It is demodulated into low-frequency digital signal and is sent to described low-frequency digital signal process circuit 104；Produce clock signal and the letter that resets
Number and described clock signal and described reset signal are sent to process circuit 104；
Temperature sensor 102, for measuring the temperature information of label, is converted into digital signal by temperature information, and by institute
State digital signal to be sent to process circuit 104；
It should be noted that temperature sensor 102 has designed and produced in silicon chip, temperature sensor 102 and place
Reason circuit 104 is attached by interface circuit.
Humidity sensor 101, for being converted into capacitance by the humidity information of label；
Humidity sensor interface circuit 110, is used for reading described capacitance, and is sent to described capacitance process circuit
104；
Optionally, in another embodiment of the present invention, humidity sensor 101 includes off-chip printing-type humidity sensor.
It should be noted that humidity sensor 101 is connected with chip 1 by the way of flip chip bonding, humidity sensor 101 with
Process circuit 104 to be attached by humidity sensor interface circuit 110.Humidity sensor 101 part open, to facilitate air
Circulation, ensures the accuracy of humidity sensor 101 measurement data.
Concrete, humidity sensor 101 is metal interdigital capacitor, and the dielectric layer of humidity sensor 101 is that polyimides is wet
Degree sensitive thin-film material.The change of external environment humidity can change the dielectric constant of dielectric layer, thus changes humidity sensor
The capacitance of 101.
Temperature sensor 102 and humidity sensor 101 include respectively: on print capacitor bottom crown, printing interdigitation electric capacity
Pole plate and polyimides humidity sensitive film dielectric layer.
Process circuit 104, for the temperature receiving described digital signal and described capacitance, read in described digital signal
Described temperature value and described capacitance are also stored in EEPROM 103 by value；Read electric erasable and programmable
Described temperature value and described capacitance in journey read only memory 103, described capacitance is converted to rh value and to institute
State rh value and described temperature value carry out temperature-compensating, the rh value after being corrected and correction after temperature value,
And the rh value after described correction and the temperature value after described correction are stored in EEPROM 103
In；Receive described low-frequency digital signal and carry out read and write information operating；Receive described clock signal and described reset signal；
Optionally, in another embodiment of the present invention, process circuit 104 and include that digital communication agreement processes electricity with data
Road.
It should be noted that process circuit 104 can realize anticollision mechanism.
EEPROM 103, after storing described temperature value, described capacitance, described correction
Temperature value after rh value and described correction.
It should be noted that data can be preserved by EEPROM 103 after a loss of power, in order to avoid
Lose.The demand that the memory capacity of EEPROM 103 is applied according to reality configures.Electric erasable and programmable
Journey read only memory 103 is attached by interface circuit with processing circuit 104.
Wherein, temperature sensor 102, humidity sensor 101 and EEPROM 103 use alternately
Mode is operated, and reduces the loss of chip with this.
In the present embodiment, the work process of each circuit is as follows:
Energy acquisition antenna 107 gathers the second radio-frequency (RF) energy, and radio-frequency (RF) energy Acquisition Circuit 108 is by described second radio-frequency (RF) energy
Being converted to electric energy, and electric energy is transferred to off-chip printing-type electric capacity 109, off-chip printing-type electric capacity 109 stores described electric energy, and will
Described electric energy is transferred to radio frequency and analog front circuit 105.After communication antenna 106 receives the first radio-frequency (RF) energy and radiofrequency signal,
Described first radio-frequency (RF) energy is converted to DC source, utilizes described DC source or described with analog front circuit 105 by radio frequency
Electric energy is temperature sensor 102, described humidity sensor interface circuit 110, EEPROM 103, radio frequency
Power with analog front circuit 105, process circuit 104 and radio-frequency (RF) energy Acquisition Circuit 108；Described radiofrequency signal is demodulated into low
Frequently digital signal and described low-frequency digital signal is sent to process circuit 104；Produce clock signal and reset signal and incite somebody to action
Described clock signal and described reset signal are sent to process circuit 104.
The temperature information of label is measured in temperature sensor 102, and temperature information is converted into digital signal, and by digital signal
It is sent to process circuit 104；Humidity sensor interface circuit 110 reads described capacitance, and described capacitance is sent to place
Reason circuit 104；Process circuit 104 receive described digital signal and described capacitance, the temperature value read in described digital signal,
And described temperature value and described capacitance are stored in EEPROM 103；Read electric erazable programmable
Described temperature value and described capacitance in read only memory 103, described capacitance is converted to rh value and to described
Rh value and described temperature value carry out temperature-compensating, the rh value after being corrected and correction after temperature value and
Rh value after described correction and the temperature value after described correction are stored in EEPROM 103
In；Process circuit 104 to receive described low-frequency digital signal and carry out read and write information operating；Receive described clock letter
Number and described reset signal.
It should be noted that process circuit 104 receive low-frequency digital signal, primarily to read receive information and
Re-send to after write information, on communication antenna 106, be sent to reader by communication antenna 106.Radio frequency and analog front circuit
105 provide clock signal and reset signal for processing circuit 104, it is possible to guarantee processes circuit 104 and normally works.
In the present embodiment, when in off-chip printing-type electric capacity 109, the electric energy of storage enough ensures that chip 1 normally works, excellent
The electric energy of storage in off-chip printing-type electric capacity 109 is first used to be powered, when in off-chip printing-type electric capacity 109 electric energy of storage is not
Can guarantee that when chip 1 normally works, being now also required to the DC source that radio frequency and analog front circuit 105 convert is that chip 1 supplies
Electricity.
In the present embodiment, energy acquisition antenna 107 gathers the second radio-frequency (RF) energy, and radio-frequency (RF) energy Acquisition Circuit 108 is by described
Two radio-frequency (RF) energy are converted to electric energy and are stored in off-chip printing-type electric capacity 109, off-chip printing-type electric capacity 109 and radio frequency and simulation
Front-end circuit 105 connects, and described electric energy sends to radio frequency and analog front circuit 105, and radio frequency and analog front circuit 105 can
Think temperature sensor 102, described humidity sensor interface circuit 110, EEPROM 103, radio frequency with
Analog front circuit 105, process circuit 104 and radio-frequency (RF) energy Acquisition Circuit 108 are powered, temperature sensor 102 and humidity sensor
Device 101 can gather data, is no longer after communication antenna 106 receives the first radio-frequency (RF) energy, could gather sensor information, solves
The problem that can not actively gather sensor information.
Additionally, after the electric energy in off-chip printing-type electric capacity 109 makes the modules work on chip 1, process circuit 104
Can also be sent to needing the information sent on communication antenna 106, and then be transferred on reader, it is achieved actively launch signal
Function.
Optionally, in another embodiment of the present invention, reference Fig. 2, radio frequency and analog front circuit 105, including:
Biasing circuit 1054, radio frequency matching network circuit 1051, clock produce circuit 1055, radio frequency with reseting controling signal
Rectification circuit 1052 and wireless data transceiving circuit 1053；
Radio frequency rectification circuit 1052, wireless data transceiving circuit 1053 are connected with radio frequency matching network circuit 1051 respectively；
Biasing circuit 1054 produces circuit 1055, radio frequency rectified current with radio frequency matching network circuit 1051, clock with reseting controling signal
Road 1052, wireless data transceiving circuit 1053, EEPROM 103, process circuit 104, temperature sensor
102, humidity sensor interface circuit 110 and radio-frequency (RF) energy Acquisition Circuit 108 connect respectively；Wireless data transceiving circuit 1053,
Clock produces circuit 1055 and is connected with process circuit 104 respectively with reseting controling signal；
Radio frequency matching network circuit 1051, for being connected with communication antenna 106, receives described first radio-frequency (RF) energy and described
Radiofrequency signal；
It should be noted that radio frequency matching network circuit 1051 can receive to greatest extent described first radio-frequency (RF) energy and
Described radiofrequency signal.Meanwhile, only radio frequency matching network circuit 1051 receives enough radio-frequency (RF) energy when, chip 1 is
Can start working.
Radio frequency rectification circuit 1052, for receiving described first radio-frequency (RF) energy of radio frequency matching network circuit 1051 output also
Described first radio-frequency (RF) energy is converted into DC source, and by described transmitting DC to biasing circuit 1054；
Biasing circuit 1054, is used for receiving described DC source, and is temperature sensor 102, humidity sensor interface electricity
Road 110, EEPROM 103, radio frequency are adopted with analog front circuit 105, process circuit 104 and radio-frequency (RF) energy
Collector 108 is powered；
It should be noted that the voltage of different circuit work may be different, now it be accomplished by biasing circuit 1054 and enter
Row boosting or reduced pressure operation, meet the requirement of the running voltage of different circuit.
Wireless data transceiving circuit 1053, for receive radio frequency matching network circuit 1051 output described radiofrequency signal,
Described radiofrequency signal is demodulated into low-frequency digital signal, and is sent to described low-frequency digital signal process circuit 104；
Clock produces circuit 1055 with reseting controling signal, is used for producing clock signal and reset signal, and by time described
Clock signal and described reset signal are sent to process circuit 104.
In the present embodiment, the specific works process of each circuit is as follows:
Radio frequency matching network circuit 1051 receives the first radio-frequency (RF) energy and radiofrequency signal, the radio frequency that communication antenna 106 sends
Rectification circuit 1052 receives described first radio-frequency (RF) energy of radio frequency matching network circuit 1051 output and by described first radio frequency energy
Amount is converted into DC source, and by described transmitting DC to biasing circuit 1054；Biasing circuit 1054 receives described direct current
Power supply, and for temperature sensor 102, humidity sensor interface circuit 110, EEPROM 103, radio frequency with
Analog front circuit 105, process circuit 104 and radio-frequency (RF) energy Acquisition Circuit 108 are powered；Wireless data transceiving circuit 1053 receives
Radio frequency matching network circuit 1051 output described radiofrequency signal, described radiofrequency signal is demodulated into low-frequency digital signal, and will
Low-frequency digital signal is sent to process circuit 104.Clock and reseting controling signal produce circuit 1055 and produce clock signal and answer
Position signal, and be sent to described clock signal and described reset signal process circuit 104.
In the present embodiment, receive, by radio frequency matching network circuit 1051, the described radio-frequency (RF) energy that communication antenna 106 sends
With described radiofrequency signal, described radio-frequency (RF) energy is converted into DC source, and passes through biasing circuit by radio frequency rectification circuit 1052
1054 is temperature sensor 102, humidity sensor interface circuit 110, EEPROM 103, radio frequency and mould
Intend front-end circuit 105, process circuit 104 and radio-frequency (RF) energy Acquisition Circuit 108 to power, can accomplish not use battery to supply
Electricity, cost-effective.
Optionally, in another embodiment of the present invention, reference Fig. 3, radio-frequency (RF) energy Acquisition Circuit 108, including:
GSM-900 frequency range radio frequency matching network circuit 1081 and rectifier boost charging circuit 1082；GSM-900 frequency range radio frequency
Matching network circuit 1081 is connected with rectifier boost charging circuit 1082；
GSM-900 frequency range radio frequency matching network circuit 1081, for being connected with off-chip printing GSM-900 band antenna, connects
Receive described second radio-frequency (RF) energy, and be sent to rectifier boost charging circuit 1082；
Rectifier boost charging circuit 1082, for being connected with off-chip printing-type electric capacity 109, receives described second radio frequency energy
Amount, and described second radio-frequency (RF) energy is converted into electric energy, and described electric energy is sent to off-chip printing-type electric capacity 109.
In the present embodiment, the work process of each circuit is as follows:
The described of GSM-900 band antenna transmission is printed outside GSM-900 frequency range radio frequency matching network circuit 1081 receiving sheet
Second radio-frequency (RF) energy, and it is sent to rectifier boost charging circuit 1082, rectifier boost charging circuit 1082 receives described second and penetrates
Frequently energy, and described second radio-frequency (RF) energy is converted into electric energy, and described electric energy is stored in off-chip printing-type electric capacity 109.
In the present embodiment, the second radio-frequency (RF) energy is converted into electric energy by rectifier boost charging circuit 1082, and by described electric energy
It is stored in off-chip printing-type electric capacity 109, when the electricity in off-chip printing-type electric capacity 109 is enough, it is possible to realize actively gathering
Sensor information and the function of transmitting radiofrequency signal.
Optionally, in another embodiment of the present invention, process circuit 104, be additionally operable to:
Control EEPROM 103, temperature sensor 102 and humidity sensor 101 to start.
Process circuit 104 controls EEPROM 103 and starts, specifically for:
Read memory command or memory write order is sent to EEPROM 103.
Concrete, according to the requirement of the timing of EEPROM 103, processing circuit 104 can produce
Read memory command or memory write order, and read memory command or memory write order are sent to electric erazable programmable only
Read memorizer 103.
Process circuit 104 controls temperature sensor 102 and humidity sensor 101 starts, specifically for:
Enabling signal is sent to temperature sensor 102 and humidity sensor 101.
It should be noted that temperature sensor 102 and humidity sensor 101 are complementary metal oxide semiconductors (CMOS) CMOS
Low-power consumption sensor, utilizes the write command can be with start-up temperature sensor 102 and humidity sensor 101, temperature sensor 102 and wet
The first character joint of the user data area that the control word of degree sensor 101 is stored in EEPROM 103
In, the information such as described control word type and certainty of measurement of including the sensor that needs start, when needs start-up temperature sensor
102 and during humidity sensor 101, chip 1 receives write command signal, in EEPROM 103 circuit
User area the second byte in write the data specified, when process circuit 104 receive described write command signal time, to temperature pass
Sensor 102 and humidity sensor 101 send enabling signal, then send control word, control temperature sensor 102 and humidity sensor
Device 101 works.
In the present embodiment, process circuit 104 and can control EEPROM 103, temperature sensor 102
Start with humidity sensor 101, and then control above three circuit is operated.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. a wireless sensor node, it is characterised in that described wireless sensor node includes:
Communication antenna, energy acquisition antenna, radio frequency and analog front circuit, process circuit, EEPROM,
Temperature sensor, humidity sensor, humidity sensor interface circuit, off-chip printing-type electric capacity and radio-frequency (RF) energy Acquisition Circuit；Institute
State radio frequency and analog front circuit, described process circuit, described EEPROM, described temperature sensor,
Described humidity sensor interface circuit and described radio-frequency (RF) energy Acquisition Circuit are arranged on the same chip, described communication antenna, institute
State energy acquisition antenna, described humidity sensor and described off-chip printing-type electric capacity to be arranged on label；Described communication antenna, institute
State off-chip printing-type electric capacity, described process circuit, described EEPROM, described humidity sensor interface electricity
Road, described temperature sensor and described radio-frequency (RF) energy Acquisition Circuit are connected with analog front circuit with described radio frequency respectively；Described
Radio frequency and analog front circuit, described EEPROM, described temperature sensor and described humidity sensor
Interface circuit is connected with described process circuit respectively；Described energy acquisition antenna and described off-chip printing-type electric capacity are respectively with described
Radio-frequency (RF) energy Acquisition Circuit connects；Described humidity sensor is connected with described humidity sensor interface circuit；
Described communication antenna, for receiving the first radio-frequency (RF) energy and radiofrequency signal；
Described energy acquisition antenna, for gathering the second radio-frequency (RF) energy；
Described radio-frequency (RF) energy Acquisition Circuit, for described second radio-frequency (RF) energy is converted to electric energy, and is transferred to described electric energy
Described off-chip printing-type electric capacity；
Described off-chip printing-type electric capacity, is used for storing described electric energy, and described electric energy is transferred to described radio frequency and AFE (analog front end)
Circuit；
Described radio frequency and analog front circuit, for being converted to DC source by described first radio-frequency (RF) energy, utilize described direct current
Power supply or described electric energy are described temperature sensor, described humidity sensor interface circuit, described electric erazable programmable is read-only deposits
Reservoir, described radio frequency are powered with analog front circuit, described process circuit and described radio-frequency (RF) energy Acquisition Circuit；By described radio frequency
Signal is demodulated into low-frequency digital signal and described low-frequency digital signal is sent to described process circuit；Produce clock signal and
Described clock signal and described reset signal are also sent to described process circuit by reset signal；
Described temperature sensor, for measuring the temperature information of label, is converted into digital signal by temperature information, and by described number
Word signal is sent to described process circuit；
Described humidity sensor, for being converted into capacitance by the humidity information of label；
Described humidity sensor interface circuit, is used for reading described capacitance, and described capacitance is sent to described process electricity
Road；
Described process circuit, for receive described digital signal and described capacitance, the temperature value read in described digital signal,
And described temperature value and described capacitance are stored in described EEPROM；Reading described electrically erasable can
Described temperature value and described capacitance in program read-only memory, described capacitance is converted to rh value and to institute
State rh value and described temperature value carry out temperature-compensating, the rh value after being corrected and correction after temperature value,
And the rh value after described correction and the temperature value after described correction are stored in the read-only storage of described electric erazable programmable
In device；Receive described low-frequency digital signal and carry out read and write information operating；Receive described clock signal and described reset letter
Number；
Described EEPROM is relative for store after described temperature value, described capacitance, described correction
Temperature value after humidity value and described correction.
Wireless sensor node the most according to claim 1, it is characterised in that described radio frequency and analog front circuit, bag
Include:
Biasing circuit, radio frequency matching network circuit, clock produce circuit, radio frequency rectification circuit and wireless number with reseting controling signal
According to transmission circuit；
Described radio frequency rectification circuit, described wireless data transceiving circuit are connected with described radio frequency matching network circuit respectively；Described
Biasing circuit produces circuit, described radio frequency rectified current with described radio frequency matching network circuit, described clock with reseting controling signal
Road, described wireless data transceiving circuit, described EEPROM, described process circuit, described temperature sensing
Device, described humidity sensor interface circuit, described radio-frequency (RF) energy Acquisition Circuit connect respectively；Described wireless data transceiving circuit,
Described clock produces circuit with reseting controling signal and is connected with described process circuit respectively；
Described radio frequency matching network circuit, for being connected with described communication antenna, receives described first radio-frequency (RF) energy and described penetrates
Frequently signal；
Described radio frequency rectification circuit, for receiving described first radio-frequency (RF) energy of described radio frequency matching network circuit output and by institute
State the first radio-frequency (RF) energy and be converted into DC source, and give described biasing circuit by described transmitting DC；
Described biasing circuit, is used for receiving described DC source, and is described temperature sensor, described humidity sensor interface electricity
Road, described EEPROM, described radio frequency and analog front circuit, described process circuit and described radio frequency energy
Amount Acquisition Circuit is powered；
Described wireless data transceiving circuit, for receiving the described radiofrequency signal of described radio frequency matching network circuit output, by institute
State radiofrequency signal and be demodulated into low-frequency digital signal, and described low-frequency digital signal is sent to described process circuit；
Described clock produces circuit with reseting controling signal, is used for producing clock signal and reset signal, and is believed by described clock
Number and described reset signal be sent to described process circuit.
Wireless sensor node the most according to claim 1, it is characterised in that described energy acquisition antenna includes that off-chip prints
Brush GSM-900 band antenna.
Wireless sensor node the most according to claim 3, it is characterised in that described radio-frequency (RF) energy Acquisition Circuit, including:
GSM-900 frequency range radio frequency matching network circuit and rectifier boost charging circuit；Described GSM-900 frequency range radio frequency matching network
Circuit is connected with described rectifier boost charging circuit；
Described GSM-900 frequency range radio frequency matching network circuit, for being connected with off-chip printing GSM-900 band antenna, receives institute
State the second radio-frequency (RF) energy, and be sent to described rectifier boost charging circuit；
Described rectifier boost charging circuit, for being connected with described off-chip printing-type electric capacity, receives described second radio-frequency (RF) energy, and
Described second radio-frequency (RF) energy is converted into electric energy, and described electric energy is sent to described off-chip printing-type electric capacity.
Wireless sensor node the most according to claim 1, it is characterised in that described process circuit, is additionally operable to:
Control described EEPROM, described temperature sensor and described humidity sensor to start.
Wireless sensor node the most according to claim 5, it is characterised in that electrically erasable described in described processing circuit controls
Programmable read only memory starts, specifically for:
Read memory command or memory write order is sent to described EEPROM.
Wireless sensor node the most according to claim 5, it is characterised in that temperature described in described processing circuit controls passes
Sensor and described humidity sensor start, specifically for:
Enabling signal is sent to described temperature sensor and described humidity sensor.
Wireless sensor node the most according to claim 1, it is characterised in that described process circuit includes that digital communication is assisted
View and data processing circuit.
Wireless sensor node the most according to claim 1, it is characterised in that described humidity sensor includes off-chip printing
Formula humidity sensor.
Wireless sensor node the most according to claim 1, it is characterised in that described communication antenna includes off-chip printing
SHF communication antenna.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820893.3A CN106292370B (en) | 2016-09-13 | 2016-09-13 | A kind of wireless sensor node |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820893.3A CN106292370B (en) | 2016-09-13 | 2016-09-13 | A kind of wireless sensor node |
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| Publication Number | Publication Date |
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| CN106292370A true CN106292370A (en) | 2017-01-04 |
| CN106292370B CN106292370B (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610820893.3A Expired - Fee Related CN106292370B (en) | 2016-09-13 | 2016-09-13 | A kind of wireless sensor node |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108648430A (en) * | 2018-05-11 | 2018-10-12 | 国网辽宁省电力有限公司电力科学研究院 | A kind of hyperfrequency take can and communication sensing device |
| CN112945348A (en) * | 2021-01-25 | 2021-06-11 | 山东大学 | Wireless intelligent sensor and application thereof |
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| CN204514381U (en) * | 2015-04-15 | 2015-07-29 | 山东万里红信息技术有限公司 | A kind of novel sensor being applicable to Internet of Things |
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| WO2007021908A2 (en) * | 2005-08-17 | 2007-02-22 | Terion, Inc. | Detecting cargo status and load activity |
| US20100051691A1 (en) * | 2008-09-04 | 2010-03-04 | Jason Brooks | System, Program Product and Methods For Retail Activation And Reload Associated With Partial Authorization Transactions |
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| CN108648430A (en) * | 2018-05-11 | 2018-10-12 | 国网辽宁省电力有限公司电力科学研究院 | A kind of hyperfrequency take can and communication sensing device |
| CN112945348A (en) * | 2021-01-25 | 2021-06-11 | 山东大学 | Wireless intelligent sensor and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106292370B (en) | 2018-12-14 |
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