CN106950889A - A kind of natural electric field wireless senser and automatically descend pollution monitor system - Google Patents
A kind of natural electric field wireless senser and automatically descend pollution monitor system Download PDFInfo
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- CN106950889A CN106950889A CN201710287965.7A CN201710287965A CN106950889A CN 106950889 A CN106950889 A CN 106950889A CN 201710287965 A CN201710287965 A CN 201710287965A CN 106950889 A CN106950889 A CN 106950889A
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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
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0428—Safety, monitoring
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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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
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Abstract
The present invention a kind of natural electric field wireless senser and automatically descend pollution monitor system, wherein, natural electric field wireless senser include microprocessor, signal input module, power module, wireless communication module and selectable satellite positioning module.Battery module is connected by a kind of natural electric field wireless senser of the present invention by optical coupled switch with DC DC converting units, and microprocessor is connected with optical coupled switch, so that the break-make to control optical coupled switch using microprocessor, to change battery module as signal input module power supply state, when using, when it is in monitoring, then microprocessor controls optical coupled switch connection to provide operating voltage for DC DC converting units, when natural electric field wireless senser is in holding state, microprocessor control optical coupled switch disconnects, voltage is provided to cut off battery module as signal input module, it is at energy saver mode, so as to reduce system energy consumption, improve its stand-by time, suitable for field long term monitoring.
Description
Technical field
The present invention relates to ground electromagnetic nature field of measuring technique, more particularly, to a kind of natural electric field wireless sensing
Device and automatically descend pollution monitor system.
Background technology
In recent years, with the economic development and improvement of people's living standards, people are more next to the environment for existence of living
More pay attention to, and soil and groundwater also becomes the object that people focus on concern as the basis of various biomass.
However, because the shallow earth's surface pollution such as soil and underground water is with disguised and hysteresis quality, also with cumulative effect and
Extended residual influence property, administers extremely difficult, therefore, and the diffusion of the instant control pollution sources of detection immediately is soil protection and underground
Water is not contaminated or lacks contaminated positive method.At present, obtaining soil and the polluted information mode of underground water mainly has tradition
Borehole test, periodic sampling analysis and and the geophysical method that is increasingly taken seriously.In many geophysical methods
In, natural electric field method is a kind of passive source method, without field source, and to a variety of seepage flow motions with contamination association, oxygen
Change reduction and microbial activities etc. all quite sensitive, and have quick facility, efficiency high, cost low in its External Observation out of office
Advantage, therefore be widely used in the long term monitoring of underground pollution thing.
However, being generally using conventional electrical measuring instrument, such as electric method meter in the observation of existing natural electric field
Carry out.This quasi-instrument is integrated with the function of a variety of geophysical exploration methods mostly, rather than is observed specifically designed for natural electric field
Design, equipment cost is high, also relatively heavy.And due to its phase can not be realized between this traditional single step form prospecting instrument
Mutual communication, accordingly, it would be desirable to which pointwise is surveyed, monitoring time cost is high, and labor intensity is big, and is difficult to required monitoring
Polluted area carry out large area multiple spot observe simultaneously.On the other hand due to such as signal input module of the circuit in the said equipment,
Even if microprocessor etc. is not at working condition there is still a need for power module provides voltage for it, so as to cause power consumption
Greatly, its needs is caused often to change battery, so as to make them unsuitable for long-term field monitoring operation.
The content of the invention
The present invention provide a kind of low energy consumption, long service life and suitable for large-scale distributed while multiple spot monitoring contaminated area
Natural electric field wireless senser, to solve above-mentioned existing natural electric field monitoring device high cost, high energy consumption and can not carry out simultaneously
The technical problem of multiple spot monitoring.
According to an aspect of the present invention there is provided a kind of natural electric field wireless senser, including the input of microprocessor, signal
Module, power module and wireless communication module, the signal input module pass through AD conversion unit and microprocessor electricity
Property be connected, the wireless communication module is electrical connected with the microprocessor, and the power module include order electric connection
Battery module, Voltage stabilizing module, optical coupled switch and DC-DC converting units, the output end of the Voltage stabilizing module respectively with micro- place
Reason device and wireless communication module are electrical connected to provide operating voltage, and the negative electrode of the optical coupled switch and the microprocessor are electrical
It is connected to control being switched in or out for the signal input module, the output end and the signal of the DC-DC converting units are defeated
Enter module to be electrical connected as its power supply.
On the basis of such scheme preferably, the signal input module includes impedance matching module and fixed gain amplification mould
Block, the output end of the impedance matching module is electrical connected by the fixed gain amplification module and the microprocessor, with reality
Existing common mode disturbances suppress and fixed gain amplification.
On the basis of such scheme preferably, the impedance matching module is solid including operational amplifier, variable resistor and first
Determine resistance, the input of the operational amplifier is connected by the variable resistor with the earth, the adjustable end of the variable resistor and
The input in the same direction of the operational amplifier is connected, and the reverse input end of the operational amplifier by described first with fixing
Resistance is connected with the output end of the operational amplifier.
On the basis of such scheme preferably, the fixed gain amplification module includes integrated amplifier, the second adjustable resistance
With the second fixed resistance, the input in the same direction of the integrated amplifier is connected with the output end of the operational amplifier, and the collection
Reverse input end into amplifier is connected by the second fixed resistance with the earth, and two Rg ends of the integrated amplifier pass through institute
State the second adjustable resistance to be connected, the output end of the integrated amplifier is connected with the microprocessor.
On the basis of such scheme preferably, the battery module includes silicon photocell group and lithium battery group, described silicon light
Battery pack is in parallel with the lithium battery group.
On the basis of such scheme preferably, the Voltage stabilizing module includes the low voltage difference voltage stabilizing connected with the battery module
Device.
On the basis of such scheme preferably, the anode of the optical coupled switch is steady by the 3rd fixed resistance and the low voltage difference
The output end of depressor is connected, and the colelctor electrode of the optical coupled switch is connected with the output end of the low-dropout regulator；The light
The negative electrode of coupled switch is connected with the microprocessor, and the emitter stage of the optical coupled switch is connected with the DC-DC modular converters.
On the basis of such scheme preferably, the DC-DC modular converters include DC booster and electric pressure converter, described
DC booster is electrical connected with the optical coupled switch, the output end of the DC booster and described electric pressure converter phase
Even.
On the basis of such scheme preferably, it is described also including the satellite positioning module being electrically connected with the microprocessor
The output end of Voltage stabilizing module is electrical connected with the satellite positioning module.
On the basis of such scheme preferably, the also memory including being electrically connected with the microprocessor.
Pollution monitor system is automatically descended present invention also offers a kind of, including control main frame and several are as described above
Natural electric field wireless senser, the natural electric field wireless senser is separately positioned on the diverse location in region to be monitored,
And the natural electric field wireless senser is connected with the control main frame wireless telecommunications.
A kind of natural electric field wireless senser of the present invention, optical coupled switch and DC-DC converting units are passed through by battery module
It is connected, and microprocessor is connected with optical coupled switch, so that the break-make to control optical coupled switch using microprocessor, to change electricity
Pond module is signal input module power supply state, in use, microprocessor can according to current state, such as when it, which is in, monitors,
Then microprocessor controls optical coupled switch connection to provide operating voltage for DC-DC converting units, at natural electric field wireless senser
When holding state, then microprocessor control optical coupled switch is disconnected, and voltage is provided to cut off battery module as signal input module,
Energy saver mode is at, so as to reduce system energy consumption, its stand-by time is improved, suitable for field long term monitoring.Satellite fix
Module and wireless communication module can also be switched on and off by microprocessor according to working condition, further reduction system energy
Consumption.
As another object of the present invention is to signal input module of the invention employs impedance matching module and fixation
Gain amplification module is constituted, and will make collected data-signal using impedance matching module with maximum power output, simultaneously
Coordinate fixed gain amplification module, the data-signal collected carried out after common mode disturbances suppression processing, carry out gain amplification,
So as to accurately be transmitted with guaranteeing the faint data-signal that will be collected, it is ensured that the accuracy of gathered data.
Further, it is of the invention to employ satellite positioning module and wireless communication module, can using satellite positioning module
Accurately know the monitoring position residing for current natural electric field wireless senser, coordinate wireless communication module, natural electric field can be achieved
Information exchange between wireless senser and control room is multiple different so as to be laid in the difference of Polluted area to be monitored
The natural wireless senser of the present invention, row information is entered by control room from the wireless communication module of different natural wireless sensers
Interactive controlling, to obtain the data message of the soil of difference or underground water in Polluted area to be monitored simultaneously, realizes that multiple spot is same
When data acquisition, reduction monitoring labor intensity, realize in real time monitoring, using more convenient.
Brief description of the drawings
Fig. 1 is the structured flowchart of the natural electric field wireless senser of the present invention；
Fig. 2 is the circuit diagram of the power module of the present invention；
Fig. 3 is the circuit diagram of the signal input module of the present invention；
Fig. 4 is microprocessor of the invention and satellite positioning module and the annexation figure of wireless communication module；
Fig. 5 is the first mode of operation flow chart of the natural electric field wireless senser of the present invention；
Fig. 6 is second of mode of operation flow chart of the natural electric field wireless senser of the present invention；
Fig. 7 is the structured flowchart for automatically descending pollution monitor system of the invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Referring to Fig. 1, and with reference to shown in Fig. 2, the invention provides a kind of natural electric field wireless senser, including microprocessor
Device 10, signal input module 20, power module 40 and wireless communication module 50, signal input module 20 pass through AD conversion unit
30 are electrical connected with microprocessor 10, and wireless communication module 50 is electrical connected with the microprocessor 10, and power module 40 includes
Battery module 41, Voltage stabilizing module 42, optical coupled switch 43 and DC-DC converting units 44 that order is electrically connected with, Voltage stabilizing module 42
Output end to be electrical connected with microprocessor 10 and wireless communication module 50 provide operating voltage for it respectively, and by the microprocessor
10 are electrical connected with the negative electrode of optical coupled switch 43, and the output end and the electrical phase of signal input module 20 of DC-DC converting units 44
Even.
A kind of natural electric field wireless senser of the present invention, battery module 41 is changed by optical coupled switch 43 and DC-DC
Unit 44 is connected, and microprocessor 10 is connected with optical coupled switch 43, so as to control optical coupled switch 43 using microprocessor 10
Break-make, to change battery module 41 for the power supply state of signal input module 20, in use, microprocessor 10 can be according to current shape
State, such as when it is in monitoring, then microprocessor 10 controls the connection of optical coupled switch 43 to provide work electricity for DC-DC converting units 44
Pressure, when natural electric field wireless senser 100 is in holding state, then the control of microprocessor 10 optical coupled switch 43 disconnects, to cut
Disconnected battery module 41 is that signal input module 20 provides voltage, is at energy saver mode, so as to reduce system energy consumption, improve
Its stand-by time, suitable for field long term monitoring.
As another preferred embodiment of the present invention, battery module 41 of the invention includes silicon photocell group 411 and lithium electricity
Pond group 412, the battery pack to form an output 3.7V in parallel with lithium battery group 412 of silicon photocell group 411, and in silicon photocell
A diode D1 is set to realize between silicon photocell group 411 and lithium battery group 412 between group 411 and lithium battery group 412
Isolation, connect with to realize silicon photocell with lithium battery and is that it charges, and prevents lithium battery for silicon photocell reverse power supply.This hair
Bright utilization silicon photocell group 411 is stored solar energy, so as to further to improve its field long-term work time, use
When, from charging from silicon photocell group 411 to system power supply and to lithium battery group 412 under light conditions, and in no light situation
Under, then powered by lithium battery group 412, to realize either cloudy day or night, natural electric field wireless senser 100 of the invention
The purpose normally monitored can be realized, to reach the effect monitored in real time.
In another preferred embodiment of the present invention, Voltage stabilizing module 42 of the invention is low including what is connected with battery module 41
Pressure difference voltage-stablizer.What low-dropout regulator was preferred to use is model ADP3338 accurate low-dropout regulator, and the low voltage difference is steady
The input of depressor is connected with the positive pole of silicon photocell group 411, the earth terminal of low-dropout regulator and bearing for silicon photocell group 411
Extremely it is connected, and the output end of the ground pressure difference voltage-stablizer is connected with optical coupled switch 43.The present invention utilizes low-dropout regulator by electricity
The 3.7V direct currents that pond module 41 is exported are converted to stable 3.3V direct currents, are microprocessor 10 and wireless communication module 50
Operating voltage is provided.It is preferred that, the present invention also connects between the input of low-dropout regulator and the negative pole of silicon photocell group 411
An electric capacity C1 is connected to, and is connected between the output end of low-dropout regulator and the negative pole of silicon photocell group 411 an electric capacity C3,
To filter the further stable DC voltage output of AC coupled.
In another preferred embodiment of the present invention, the anode of optical coupled switch 43 of the present invention by the 3rd fixed resistance R1 with
The output end of low-dropout regulator is connected, and the colelctor electrode of optical coupled switch 43 is connected with the output end of low-dropout regulator；Optocoupler
The negative electrode of combination switch is connected with microprocessor 10, and the emitter stage of optical coupled switch 43 is connected with DC-DC modular converters.Need explanation
It is that the optical coupled switch 43 that the present invention relates to is four pins, its input side is light emitting diode, the anode of light emitting diode
For the anode of optical coupled switch 43, the negative electrode of light emitting diode is the negative electrode of optical coupled switch 43.The outlet side of optical coupled switch 43 is light
Quick triode, the colelctor electrode of the current collection extremely optical coupled switch 43 of phototriode, the transmitting extremely optical coupled switch of phototriode
43 emitter stage.
In use, the output end of low-dropout regulator is electrical connected with microprocessor 10 and wireless communication module 50, it is it
Operating voltage is provided respectively, and the negative electrode of optical coupled switch 43 is connected with the control interface of microprocessor 10, microprocessor 10 can
By controlling the negative electrode of optical coupled switch 43, to control the opening and closing of optical coupled switch 43, so as to control DC-DC modular converters and power supply mould
The break-make of block 40, to reach the power supply control to power module 40 to signal input module 20.During use, when the present invention's
When natural electric field wireless senser 100 is not at monitoring state, microprocessor 10 is in by controlling the negative electrode of optical coupled switch 43
High level, so that optical coupled switch 43 is off, module of cutting off the electricity supply 40 and the connection of DC-DC modular converters are real
Existing power module 40 and the disconnecting of signal input module 20, to reduce the energy consumption of natural electric field, improve its service life；Instead
When natural electric field wireless senser 100 is in monitoring state, at negative electrode of the microprocessor 10 by controlling optical coupled switch 43
In low level, so that optical coupled switch 43 is connected, power module 40 is connected with signal input module 20 and powered for it, with true
Protect the normal work of signal input module 20.
Further, DC-DC modular converters of the invention include DC booster 441 and electric pressure converter 442, wherein,
DC booster 441 is electrical connected with optical coupled switch 43, and the output end of DC booster 441 is connected with electric pressure converter 442.It is excellent
Choosing, the model TPS61032 of DC booster 441 of the invention, and the model LM2662 of electric pressure converter 442, make
Used time, by DC booster 441 arrange in pairs or groups the 3.3V voltage conversions that export Voltage stabilizing module 42 of electric pressure converter 442 for+5V and-
5V power supplys are powered for signal input module 20.
In another preferred embodiment of the present invention, a kind of natural electric field wireless senser of the invention also includes and micro- place
The satellite positioning module 60 that device 10 is electrically connected with is managed, is wirelessly passed with the natural electric field for obtaining the present invention using satellite positioning module 60
The positional information of sensor 100, meanwhile, the output end of the Voltage stabilizing module 42 of the present invention is electrical connected with satellite positioning module 60,
Normal work for satellite positioning module 60 provides operating voltage.What deserves to be explained is in the satellite positioning module 60 of the present invention certainly
Band controlling switch, the satellite positioning module 60 is electrical connected by controlling switch and the output end of Voltage stabilizing module 42, works as the present invention
Natural electric field wireless senser 100 when being not at working condition, microprocessor 10 can be by controlling in satellite positioning module 60
Controlling switch, to cut off the connection between Voltage stabilizing module 42 and satellite positioning module 60, so as to reduce its energy consumption, improve its wild
The outer working time.
It should be noted that the satellite positioning module 60 of the present invention uses low-power consumption multimodal satellite navigation chip
AT6558, microprocessor 10 uses MSP430F449 single-chip microcomputers.During low-power consumption multimodal satellite navigation chip AT6558 is supported
State Big Dipper BDS, GPS of America and dual system joint satellite fix.Peripheral circuit is simple, it is only necessary to crystal oscillator and antenna impedance
Match somebody with somebody, easily can be connected by 4 line spi bus with MSP430F449 single-chip microcomputers.In addition, low-power consumption multimodal satellite navigation chip
AT6558 has ON/OFF mouthfuls of special switch port, can directly by the opening and closing of MSP430F449 singlechip control chips,
So as to reach the Access Control to the out-put supply of Voltage stabilizing module 42.
And the MSP430F449 single-chip microcomputers used of the present invention have super low-power consumption, service behaviour is steady under severe conditions
It is fixed, therefore the job stability of natural electric field wireless senser 100 of the present invention can be effectively improved.Wherein, MSP430F449 monolithics
The clock frequency of machine is 8M, and word length is 16, and using 16 reduced instruction set computers, piece includes 2 16 Bit Timing Control devices, therefore,
The MSP430F449 single-chip microcomputers can fully meet the processing control function required for sensor node.The present invention's
60KFlash memories and 2KRAM memories are integrated with MSP430F449 single-chip microcomputers, biography can be just met without piece external expansion
The program and data storage function of sensor node.Quick 12 ADC of multichannel are particularly also integrated with its piece, without extra configuration
AD devices can just realize the AD conversion of natural electric field signal.In piece ADC obtain from A0 mouthfuls by signal input module 20 from
Right electric field simulation signal input, completes AD conversion under program.Two SPI ports of the MSP430F449 single-chip microcomputers can be with
The data of satellite positioning module 60 are easily received respectively and data exchange are carried out with wireless communication module, and concrete structure please
Refering to shown in Fig. 4.
In another preferred embodiment of the present invention, please continue to refer to shown in Fig. 3, signal input module 20 of the invention is wrapped
Impedance matching module 21 and fixed gain amplification module 22 are included, the output end of impedance matching module 21 is amplified by the fixed gain
Module 22 is electrical connected with microprocessor 10.Because in actual monitoring, the signal accessed by signal input module 20 compares
It is faint and with certain interference signal, if being directly passed to microprocessor 10, the accurate of information gathering can be influenceed
Property, therefore the present invention will make collected data-signal with maximum power output using impedance matching module 21, while coordinating solid
Determine gain amplification module 22, the data-signal collected is carried out after common mode disturbances suppression processing, carry out gain amplification, so that
Accurately transmitted with guaranteeing the faint data-signal that will be collected, it is ensured that the accuracy of gathered data.
Further, impedance matching module 21 of the invention includes operational amplifier 211, variable resistor VR1212 and first
Fixed resistance R2213, the input of the operational amplifier 211 is grounded by variable resistor VR1212, variable resistor VR1212's
Adjustable end is connected with the input in the same direction of operational amplifier 211, and the reverse input end of operational amplifier 211 by first with consolidating
The output end for determining resistance R2213 with operational amplifier 211 is connected.The present invention utilizes variable resistor VR1212 and operational amplifier
Achievable 1M~256M the input impedance of 211 combination is adjustable, is actually needed with meeting.
In another preferred embodiment of the present invention, due to natural electric field signal general range less, therefore, this hair
Bright use fixed gain mode.Wherein, fixed gain amplification module 22 of the invention is variable including integrated amplifier 221, second
The fixed resistance 223 of resistance 222 and second, the input in the same direction of integrated amplifier 221 and the output end phase of operational amplifier 211
Connect, and the reverse input end of the integrated amplifier 221 is grounded by the second fixed resistance 223, and the two of the integrated amplifier 221
Individual Rg ends are connected by the second adjustable resistance 222, and the output end of integrated amplifier 221 is connected with microprocessor 10.Using integrated
Amplifier 221 carrys out suppression common mode interference, carries out 5 times of gains.Natural electric field signal passes through microprocessor by signal input module 20
Device 10MSP430F449 ADC input end of analog signal A0 oral instructions are handed in microprocessor 10.
In order to which the localization for realizing Monitoring Data is stored, a kind of natural electric field wireless senser of the invention also include with it is micro-
The memory 80 that processor 10 is electrically connected with.
It should be noted that wireless communication module 50 of the present invention uses model CC2420 RF cores
Piece, working band is the 2.4GHz frequency ranges for exempting to authorize, using DSSS mode, supports 16 communication channels, using O-
QPSK modulation systems.The wireless communication module 50 has super low-power consumption, meets the MAC layer of IEEE 802.15.4 code requirements, can
Support automatic frame format generation, synchronous insertion and detection, CRC check, power detecting, automatic MAC layer safeguard protection etc..RF chips
CC2420 only needs to few peripheral circuits such as crystal oscillator clock, radio frequency input/output matching, can be very square by 4 line spi bus
Just couple (see Fig. 4) with MSP430 single-chip microcomputers, realize data exchange and programme-control.Therefore, its is low in energy consumption, can further improve
A kind of use time of natural electric field wireless senser of the present invention, makes it adaptive to the ring that field is independently monitored automatically
Border.
A kind of natural electric field wireless senser of the present invention, compared with usual electricity instrument, it has production cost low
It is honest and clean, it is easy to extensive arrangement, carries out large-scale pollution monitoring.And the natural electric field wireless senser 100 largely arranged can be real
While existing area natural electric field observation, the real-time transmission that wireless network ensures Monitoring Data is also constituted, field is improved and sees
The adaptivity of survey.
Further, it is of the invention it is a kind of automatically descend pollution monitor system, have two kinds of mode of operations, be respectively timing
Drainage pattern and order drainage pattern.Wherein, timing mode is mainly by the observation cycle being previously set (according to monitoring need
Ask, such as every observation in 12 hours once) data acquisition is carried out, each node of natural electric field wireless senser 100 is in data acquisition
Stage opens each functional module gathered data and by network transmission data to control main frame 80 simultaneously, in acquisition interval period pass
Close most of functional module and carry out energy-conservation, idiographic flow is shown in Fig. 5.Order drainage pattern, then need the communication module one of each node
Straight work, waits network instruction to open the corresponding function module and carries out data acquisition and transmission, idiographic flow is shown in Fig. 6.It is specific to use
Which kind of mode of operation can be determined according to specific monitoring task demand.
Please continue to refer to shown in Fig. 7, pollution monitor system, including control master are automatically descended present invention also offers a kind of
Machine 80 and several natural electric field wireless sensers 100 as described above, natural electric field wireless senser 100, which is separately positioned on, to be treated
Diverse location in monitored area, and natural electric field wireless senser 100 is connected with the wireless telecommunications of control main frame 80.
In use, using the present invention natural electric field wireless senser satellite positioning module 60 can accurately know it is current from
Monitoring position residing for right electric field wireless senser 100, coordinates wireless communication module 50, natural electric field wireless senser can be achieved
Information exchange between 100 and control room, so as to lay multiple different present invention in the difference of Polluted area to be monitored
Natural wireless senser, the wireless communication module 50 for passing through control room and different natural wireless sensers carries out information exchange
Control, to obtain the data message of the soil of difference or underground water in Polluted area to be monitored simultaneously, realizes multiple spot number simultaneously
According to collection, reduction monitoring labor intensity realizes monitoring in real time, using more convenient.
Finally, the present processes are only preferably embodiment, are not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modifications, equivalent substitutions and improvements made etc. should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of natural electric field wireless senser, it is characterised in that including microprocessor, signal input module, power module and
Wireless communication module, the signal input module is electrical connected by AD conversion unit with the microprocessor, described wireless
Communication module is electrical connected with the microprocessor, and the power module includes battery module, the voltage stabilizing mould that order is electrically connected with
Block, optical coupled switch and DC-DC converting units, the output end of the Voltage stabilizing module respectively with the microprocessor and wireless telecommunications mould
Block is electrical connected, and the negative electrode of the microprocessor and the optical coupled switch is electrical connected to control the access of the signal input module
Or disconnect, output end and the signal input module of the DC-DC converting units are electrical connected.
2. a kind of natural electric field wireless senser as claimed in claim 1, it is characterised in that the signal input module includes
Impedance matching module and fixed gain amplification module, the output end of the impedance matching module pass through the fixed gain amplification module
It is electrical connected with the microprocessor, to realize that common mode disturbances suppress and fixed gain is amplified.
3. a kind of natural electric field wireless senser as claimed in claim 2, it is characterised in that the impedance matching module includes
Operational amplifier, variable resistor and the first fixed resistance, the output end of the operational amplifier pass through the variable resistor and the earth
It is connected, the adjustable end of the variable resistor is connected with the input in the same direction of the operational amplifier, and the operational amplifier
Reverse input end is connected with by first fixed resistance with the output end of the operational amplifier.
4. a kind of natural electric field wireless senser as claimed in claim 3, it is characterised in that the fixed gain amplification module
Including integrated amplifier, the second adjustable resistance and the second fixed resistance, the input in the same direction of the integrated amplifier and the fortune
The output end for calculating amplifier is connected, and the reverse input end of the integrated amplifier is connected by the second fixed resistance with the earth, and
Two Rg ends of the integrated amplifier by the second adjustable resistance be connected, the output end of the integrated amplifier with it is described micro-
Processor is connected.
5. a kind of natural electric field wireless senser as claimed in claim 1, it is characterised in that the battery module includes silicon light
Battery pack and lithium battery group, described silicon photocell group are in parallel with the lithium battery group.
6. a kind of natural electric field wireless senser as claimed in claim 5, it is characterised in that the Voltage stabilizing module includes and institute
State the low-dropout regulator of battery module series connection.
7. a kind of natural electric field wireless senser as claimed in claim 6, it is characterised in that the anode of the optical coupled switch leads to
The 3rd fixed resistance is crossed with the output end of the low-dropout regulator to be connected, and the colelctor electrode of the optical coupled switch and the low pressure
The output end of poor voltage-stablizer is connected；The negative electrode of the optocoupler combination switch is connected with the microprocessor, the hair of the optical coupled switch
Emitter-base bandgap grading is connected with the DC-DC modular converters.
8. a kind of natural electric field wireless senser as claimed in claim 7, it is characterised in that the DC-DC modular converters bag
DC booster and electric pressure converter are included, the DC booster is electrical connected with the optical coupled switch, the DC booster
Output end be connected with described electric pressure converter.
9. a kind of natural electric field wireless senser as claimed in claim 1, it is characterised in that also including with the microprocessor
The satellite positioning module of electric connection, the output end of the Voltage stabilizing module is electrical connected with the satellite positioning module.
10. a kind of automatically descend pollution monitor system, it is characterised in that including control main frame and several such as claims 1
Described natural electric field wireless senser, the natural electric field wireless senser is separately positioned on the different positions in region to be monitored
Put, and the natural electric field wireless senser is connected with the control main frame wireless telecommunications.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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