CN108548246A - Plasma fresh air system based on internet of things - Google Patents
Plasma fresh air system based on internet of things Download PDFInfo
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- CN108548246A CN108548246A CN201810405663.XA CN201810405663A CN108548246A CN 108548246 A CN108548246 A CN 108548246A CN 201810405663 A CN201810405663 A CN 201810405663A CN 108548246 A CN108548246 A CN 108548246A
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- internet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0016—Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
A kind of plasma fresh air system based on Internet of Things, it includes control subsystem, power supply and plasma processor, the control subsystem control power supply to plasma processor to provide AC energy, plasma processor includes shell and the first electrode plate being arranged along airflow direction being arranged in shell and second electrode plate, setting is in the venthole of rectangular arrangement on first electrode plate and second electrode plate, the M*N spike electrodes in rectangular arrangement are additionally provided on first electrode plate, the M*N annular electrodes in rectangular arrangement are additionally provided on second electrode plate, the M and N is the integer more than or equal to 1.Plasma fresh air system provided by the invention based on Internet of Things utilizes plasma cleaning air, and work efficiency is high.
Description
Technical field
The plasma fresh air system that the present invention relates to a kind of based on Internet of Things more particularly to it is a kind of using plasma except haze
Plasma fresh air system.
Background technology
The time of modern 80~90% is spent indoors, and the seal of modern building increases, various decorations materials
Material, furniture and household chemicals etc. are largely got in, and make indoor pollutant benzene homologues, volatile organic matter（VOC）、PM2.5
Source and type increase.These pernicious gases are retained, are accumulated, and indoor air quality is caused to deteriorate, in outdoor air pollution
On the basis of more aggravated one layer, serious influence is caused on human body health.Lead to leukaemia, lung cancer, nervous system, breathing
System and immune system, the generation of the diseases such as fetal congenital defect.
Invention content
To solve the above problems, the goal of the invention of the present invention is to provide a kind of plasma fresh air system based on Internet of Things,
Work efficiency is high for it.
To realize that the goal of the invention, the present invention provide a kind of plasma fresh air system based on Internet of Things, wrap
Control subsystem, power supply and plasma processor are included, the control subsystem control power supply to plasma processor to provide friendship
Galvanic electricity energy, plasma processor include shell and the first electrode plate being arranged along airflow direction being arranged in shell and the second electricity
Setting is in the venthole of rectangular arrangement on pole plate, first electrode plate and second electrode plate, and M*N is additionally provided on first electrode plate
A spike electrode in rectangular arrangement, be additionally provided on second electrode plate M*N be in rectangular arrangement annular electrode, it is described
M and N is the integer more than or equal to 1.
Preferably, the power supply includes：Controller, rectifier, electric switch and transformer, the inverter are used for photovoltaic
The direct current energy of battery output is converted to AC energy, and the rectifier is used to alternating current being converted to Rectified alternating current；Transformation
Device includes the first primary coil, the second primary coil and secondary coil, and controller controls electric switch to apply Rectified alternating current
It is applied to alternating current on plasma electrode on the first primary coil, and from secondary coil output, which is characterized in that power supply also wraps
Include input voltage detector, output voltage detector, zero cross detection circuit, comparator, shift register, latch, clock letter
Number generator, first with door, second with door and phase inverter, voltage detector is defeated for detecting the voltage for being input to rectifier
Outlet is connected to the reverse side of comparator；Two signals of zero cross detection circuit enter end and are connected to the second primary coil, for detecting
The period of output voltage is to generate the period square wave consistent with the period of output voltage；The input terminal of the phase inverter is connected to
The signal output end of zero-crossing detector, output end be connected to first with the first input end of door and second with it is the first of door defeated
Enter end；The signal output end of squarer be connected to first with the second signal input terminal of door and shift register when
Zhong Duan；The reverse side of comparator is connected to the signal output end of voltage detector, and in-phase end is connected to the second primary coil, output
End is connected to the signal input part of shift register；The signal output end of shift register is connected to the signal input of latch
End；The signal output end of latch is connected to the second signal input terminal of second and door, second with the signal output end of door through driving
Dynamic device is supplied to controller, controller to control the working condition of electric switch according to the signal of input.
Preferably, AC power further includes the second transformer comprising primary coil and secondary coil, the second transformer
First primary coil of primary coil and the first transformer is in parallel, time of the secondary coil of the second transformer and the first transformer
Line coil gives plasma electrode offer electric energy after being in series.
Preferably, control subsystem further includes processor, matrix switch and gas sensor, and the gas sensor is used for
The concentration of the pernicious gas of local environment is detected, and concentration information is supplied to processor, the processor is according to being detected
Concentration information control matrix switch is applied to the electric energy of plasma electrode to control.
Preferably, plasma processor further includes pressure fan and alignment circuit, and the processor has according to local environment
The concentration of evil gas provides control signal to adjust the rotating speed of pressure fan to alignment circuit.
Preferably, plasma processor further includes wind deflector, and wind deflector is arranged along airflow direction the second plasma battery plate
Downstream, the first face of wind deflector is used to plasma treated gas importeding into exhaust outlet, containing smelly in the gas
Oxygen.
Preferably, the side of shell is provided with multiple exhaust outlets, the second face of wind deflector is for being oriented to air-flow
To be discharged from exhaust outlet, the second face is the face opposite with the first face.
Preferably, plasma processor further includes the wind deflector and air draft plate that angle is in the shape of the letter V, wind deflector and second etc. from
Wedge shape cavity is formed between sub- battery plate, plasma treated gas is imported into exhaust outlet, contains ozone in the gas,
The air draft plate is for being oriented to be discharged from exhaust outlet air-flow.
Preferably, the exhaust ports are provided with ozone decomposed device, are used for ozone reduction into oxygen, dry to be formed
Net gas.
Preferably, control subsystem further includes communication unit, and communication unit includes that electricity is offset in transmitter, receiver and leakage
Road, handled device are connected to the control terminal of leakage bucking circuit, and the input terminal for revealing bucking circuit is connected to transmitter, control terminal
It is connected to processor, output end is connected to receiver, and the leakage bucking circuit is generated according to the control signal that processor provides
Offseting signal for the carrier wave for offsetting transmitter.
Compared with prior art, the plasma fresh air system provided by the invention based on Internet of Things utilizes plasma for purification
Air, work efficiency is high.
Description of the drawings
Fig. 1 is plasma air purifying device composition schematic diagram provided by the invention；
Fig. 2 is the stereoscopic schematic diagram of plasma electric pole plate provided by the invention；
Fig. 3 is the composition schematic diagram of the control subsystem of plasma air purifying device provided by the invention；
Fig. 4 is the circuit diagram of plasma electrode and matrix switch provided by the invention；
Fig. 5 is the circuit diagram of power supply provided by the invention；
Fig. 6 is the variation composition schematic diagram of plasma treatment appts provided by the invention；
Fig. 7 is the circuit diagram of communication unit provided by the invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " first ", " second ", " third " etc. are only used for description mesh
, it is not understood to indicate or imply relative importance.
According to an embodiment of the present invention, the plasma air purification system based on Internet of Things includes by network connection
Background server, user terminal, plasma air purifying device and monitoring center, wherein the network be used for user terminal,
It is communicatively coupled between plasma air purifying device, monitoring center and background server.The network is including the use of such as Wi-
Fi, bluetooth, 2.4G, UMTS（General Mobile moves communication system）、ISDN（ISDN）、DSL（Digital subscriber line）、
ATM（Asynchronous transfer mode）, 802.11, Ethernet, the skills such as InfinBand and PCI Express Advanced Switching
The connection of art.Right agreement includes TCP/IP in a network（Transmission control protocol/procotol）、MPLS（Multiprotocol label
It exchanges）、UDP（User Datagram Protocol）、HTTP（Hypertext transfer protocol）、FTP（File Transfer Protocol）、CDMA（Code point is more
Location）、WCDMA（Wideband code division multiple access）、GSM（Global system for mobile communications）、HSDPA（High-speed downlink packet access）Deng.
It includes HTML, XML etc. to exchange the format of data in a network.
Plasma air purifying device is set to each place, and the various polluted gas for place where monitoring contain
Amount, and the content of measured polluted gas packing framing is sent to monitoring by communication module or communication unit through network
Center or user terminal are handled to be purified to air the gas in place place when polluted gas is exceeded.Afterwards
Platform server for network is managed and by plasma air purifying device test result handle and and historical data
It is compared, data can be consulted for user by being formed.
Fig. 1 is plasma air purifying device composition schematic diagram provided by the invention, and Fig. 2 is plasma provided by the invention
The stereoscopic schematic diagram of electrode plate；As shown in Figs. 1-2, plasma air purifying device provided by the invention includes shell 1, control
First face of system and air processing unit, housing sidewall is provided with air inlet 2, and air inlet net is provided at air inlet；With first
The opposite face in face is provided with exhaust outlet 9, and exhaust ports are provided with the exhaust net with multiple gas vents.Air inlet connection air inlet
Room.Air processing unit includes along airflow direction setting primary filter 3, wind turbine 4 and gas treatment equipment, wherein primary mistake
Filter 3 to entering the indoor air of air inlet for tentatively being filtered, to remove the large particulate matter in air.Wind turbine 4 is used for will
It enters the indoor air with pollutant of air inlet and is supplied to gas treatment equipment, the gas treatment equipment is including first etc.
Setting is in square on ion-conductance pole plate 5 and the second plasma electric pole plate 8, the first plasma electric pole plate 5 and the second plasma electric pole plate 8
The venthole of battle array shape arrangement, such as the venthole 5H on the first plasma electric pole plate, it is in square to be additionally provided with M*N on first electrode plate
The spike electrode of battle array shape arrangement, such as 5E, be additionally provided on second electrode plate M*N be in rectangular arrangement annular electrode, the M
It is all higher than with N or equal to 1.Power supply 6, will be into applying electric energy on the first plasma electrode and the second plasma electrode
The air entered to gas treatment equipment is ionized, to form plasma air-flow, when plasma electrode is to air ionization, and oxygen
It is converted into ozone, the ozone can decompose the organic pollution for entering gas treatment equipment.
According to an embodiment of the present invention, air processing unit further includes wind deflector 13, and setting is along airflow direction the
The downstream of two plasma electric plates 8, the first face of wind deflector 8 is used to plasma treated gas importing exhaust outlet 9, described
Contain ozone in gas.It is provided with ozone decomposed device at exhaust outlet 9, is used for ozone reduction at oxygen, to prevent ozone
Secondary pollution is caused to air.Second face of wind deflector 13 is for being oriented to so that clean gas is passed through exhaust outlet air-flow
Air exhausting net discharge at 11, it is preferable that the second face is provided with multiple protrusions 11 with to the air-flow that will be discharged（Wind）Flow-disturbing is carried out,
Second face is that multiple protrusions are arranged in of the invention in the face opposite with the first face on wind deflector 13, the wind for upsetting discharge,
To which it is more soft to make one the wind for feeling to be discharged from purifier.
According to an embodiment of the present invention, it is also set up between the first plasma electric pole plate 5 and the second plasma electric pole plate 8
There is light catalyst element 7 comprising be in the grid of a burst of shape, titanium dioxide granule has been adhered on each network, the present invention provides light
Catalyst component 7 accelerates the decomposition to pollutant.
According to an embodiment of the present invention, it is provided with ozone decomposed device at the exhaust outlet 9, is used for ozone reduction
At oxygen, to form clean gas.Ozone decomposed device includes at least the one or several kinds of following substance：Manganese, titanium dioxide
Manganese, manganese sesquioxide managnic oxide etc..
Fig. 3 is the composition schematic diagram of the control subsystem of plasma air purifying device provided by the invention, such as Fig. 3 institutes
Show, control subsystem includes processor 130, touch display screen 126, communication subsystem（Communication unit）125, VOC gas sense
Device 121, A/D converter 122, WIFI module 127, bluetooth module 128,2.4G modules 129 and air processing unit, wherein use
VOC sensors 121 are used to measure the VOC concentration informations of local environment, and concentration information is converted to power information, are then supplied to
A/D converter 122.The information that VOC sensors provide is converted to digital information and is supplied to processor by A/D converter 122
130.The data that processor 130 is used to provide A/D converter 122 are handled, when the concentration over-standard of VOC, at gas
It manages device and signal is provided, so that gas treatment equipment work is to generate plasma jet to be decomposed to pollutant.Processor
The concentration information of VOC packing framing is then also passed through into communication subsystem 125/WIFI modules/127 bluetooth modules/1282.4G moulds
Block 129 is sent to long-range user terminal and/or monitoring center.
According to one embodiment, gas treatment equipment includes matrix switch 131 and plasma processing apparatus 132, further includes
The normal open switch K1 of relay J1 and its driving circuit, relay J1 is set to the access that power supply 6 provides electric energy to matrix switch
In, the driving circuit of relay J1 includes resistance R1, transistor T1 and diode D1, wherein the first end of resistance R1 is connected to
One output end of processor, second end are connected to the base stage of transistor T1.The emitter of transistor T1 is grounded, collector pass through after
The line packet of electric appliance is connected to the VCC of power supply.The both ends parallel diode D1 of the line packet of relay J1.The ends switch K1 of relay J1
It seals in the power circuit of matrix switch 131, i.e. switch of the plasma processing apparatus 132 through relay J1 is connected to power supply
AC。
According to one embodiment, gas treatment equipment includes matrix switch motor driver 133 and motor M, motor driving
Device 133 provides tach signal according to the instruction that processor provides to motor M.Gas treatment equipment further includes relay J2 and its drive
The normal open switch K2 of dynamic circuit, relay J2 is set in the access that power supply 6 provides electric energy to motor driver 133, relay
The driving circuit of J2 includes resistance R2, transistor T2 and diode D2, wherein the first end of resistance R2 is connected to the one of processor
A output end, second end are connected to the base stage of transistor T2.The emitter of transistor T2 is grounded, line of the collector through relay J2
Packet is connected to the VCC of power supply.The both ends parallel diode D2 of the line packet of relay J2.The ends switch K2 of relay J2 seal in electricity
In the power circuit of machine driver 133, i.e. switch of the motor driver through relay J2 is connected to power supply AC.
Control subsystem provided by the invention further includes ROM123 and RAM124, and the ROM123 is grasped for storage control
Make program, the RAM124 is used to store nonce when 130 course of work of processor, and 130 call operation program of processor is simultaneously
Execute order.Control subsystem further includes touch display screen 126, is connected to processor 130, is referred to for display data and input
It enables.
Fig. 4 is the circuit diagram of plasma electrode and matrix switch provided by the invention, as described in Figure 4, according to the present invention one
A embodiment, the M*N equities on the first plasma electrode plate 5 and the second plasma electrode plate 8 are from plasma electrode by opening
Close M*N pixel switch in matrix is connected to power supply AC, specifically, plasma processing apparatus includes row selector, row
Selector, N column selection line, M row select line, the first power cord LS, LN, M*N pixel switches of second source line and M*N pairs
Plasma electrode, processor 130 provide control signal to select a pixel switch to row selector and column selector, make one
Equity is connected to from electrode connection on the first power cord LS and second source line LN, and AC passes through the first power cord LS and second
Power cord LN provides electric energy to plasma electrode, and each pixel switch includes the first electric switch and the second electric switch, and first establishes by cable
The control terminal of pass is connected to a column selection line LL, and first terminal is connected to a row select line LP, and Second terminal is connected to
The first terminal of the control terminal of two electric switches, the second electric switch is connected to the first direct current supply line, such as common end, and Second terminal connects
It is connected to the line packet through relay and is connected to DC power supply VCC, plasma electrode is connected to the first power supply to the switch through relay
Between line LS and second source line LN, be also associated between the control terminal and first terminal of second switch capacitance for improve second
The job stability of electric switch.For example, the first pixel switch includes the first electric switch T111 and the second electric switch T112, the first electricity
The first terminal that the control terminal of switch T111 is connected to first row selection line LL1, the first electric switch T111 is connected to the first row choosing
Line LP1 is selected, the Second terminal of the first electric switch T111 is connected to the control terminal of the second electric switch T112, the second electric switch T112's
First terminal is connected to ground, and line packet of the Second terminal through relay J11 of the second electric switch T111 be connected to power supply VCC, wait from
Sub-electrode is connected between the first power cord LS and second source line LN the switch K11 through relay J11, by plasma electric
Pole is connected to power supply AC, in this way, when the concentration of the pollutant in air is low, the plasma electrode in partial pixel can be made logical
Electricity and generate plasma, when the concentration of the pollutant in air is high, the plasma electrode in multiple pixels can be made to be powered
And plasma is generated, it so can not only reduce the electric energy used, but also light catalyst element 7 and ozone decomposed device can be increased
Service life.
According to this hair one embodiment, the plasma fresh air system based on Internet of Things includes control subsystem, power supply and edge
The plasma treatment appts of the setting of airflow direction, the control subsystem control power supply to plasma processor to provide exchange
Electric energy, 5 illustrate power supply provided by the invention below in conjunction with the accompanying drawings.
Fig. 5 is the circuit diagram of power supply provided by the invention, as shown in figure 5, the power supply AC6 includes：It is controller 611, whole
Flow device D601, electric switch S6 and transformer T1, wherein the rectifier D601 is used to alternating current being converted to Rectified alternating current；
Transformer packet T2 includes the first primary coil L65, the second primary coil L64 and secondary coil L66, and the control of controller 611 is established by cable
Close S5 Rectified alternating current to be applied on the first primary coil, and from secondary coil output be applied to plasma electrode and/or
Alternating current on motor driver.Power supply further includes input voltage detector 602, output voltage detector and the inspection of output signal period
Slowdown monitoring circuit, the output signal cycle detection circuit include zero cross detection circuit 603, comparator 608, shift register 609, lock
Storage 607, clock signal generator 606, first and door 605, second and door 610 and phase inverter 604, voltage detector 602 are used
It is input to the voltage of rectifier D601 in detection, first input end is connected to electric switch S1 and electric switch S2 phases through inductance L61
The intermediate node of connection, the second input terminal are connected to the intermediate node that electric switch S3 is connected with electric switch S4, output end connection
In the reverse side of comparator 608；Two signals of zero cross detection circuit 603 enter end and are connected to the second primary coil, defeated for detecting
Go out the period of voltage to generate the period square wave consistent with the period of output voltage；The input terminal of the phase inverter 604 connects
In the signal output end of zero-crossing detector 603, output end is connected to first and the first input end of door 605 and second and door
610 first input end；The signal output end of clock signal generator 606 is connected to the second signal of first and door 605
The clock end of input terminal and shift register 609；The reverse side of comparator 609 is connected to the signal output of voltage detector 602
End, in-phase end are connected to the second primary coil, and second mends grade coil as output voltage detector；The output end of comparator 608 connects
It is connected to the signal input part of shift register 609；The signal output end of shift register 609 is connected to the signal of latch 607
Input terminal, 607 preferred d type flip flop of latch；It is defeated with the second signal of door 610 that the signal output end of d type flip flop is connected to second
Enter end, second is supplied to controller 611 with the signal output end of door 610 through driver S5, and controller 611 is according to the signal of input
Control the working condition of electric switch S6.
Power supply further includes the second transformer T2 comprising primary coil L62 and secondary coil L63, the second transformer T2's
First primary coil of primary coil and the first transformer T1 is in parallel, the in-phase end of the primary coil of the second transformer T2 and
The capacitance C602 being in series and diode D602 is set between the first primary coil reverse side of one transformer T1.Second transformer
Secondary coil and the first transformer secondary wire coil be in series after to being provided out electric energy.The primary coil of second transformer T2
In-phase end provide signal to controller 611 through resistance R61, the voltage value of time variant voltage T1 and T2 is input to detection.
The power supply that the present invention is arranged such, as a result of output signal cycle detection circuit, controller 611 is according to output
The make-and-break time for the signal control electric switch S6 that signal period detection circuit provides, to stabilize the output of power supply, further
The stability for improving power supply, to improve the job stability of plasma air purifying device.
Fig. 6 is the variation composition schematic diagram of plasma treatment appts provided by the invention, as the plasma treatment of Fig. 6 fills
Set with plasma processing apparatus shown in FIG. 1 the only difference is that：The setting of wind deflector.In Fig. 6, along airflow direction second
The downstream of plasma electric pole plate 8 is provided with the wind deflector 14 and air draft plate 11 that angle is in the shape of the letter V, wind deflector 14 and the second plasma
Wedge shape cavity is formed between battery plate 8, plasma treated gas is imported into exhaust outlet 9, contains ozone in the gas,
Clean gas is discharged the air draft plate 11 by exhaust outlet 12, it is preferable that multiple protrusions are arranged on air draft plate with to discharge
Gas carry out flow-disturbing, wind deflector and air draft plate is arranged such, when purified gas being made to be discharged, wind-force is more soft, human body
It can feel well.
Fig. 7 is the composition frame chart of communication unit provided by the invention, as described in Figure 7, according to a reality provided by the invention
Example is applied, communication unit includes that transmitter, receiver and leakage bucking circuit, the processor 130 are connected to leakage bucking circuit
Control terminal, the input terminal for revealing bucking circuit is connected to transmitter, and control terminal is connected to processor 130, and output end is connected to
Receiver, the control signal that the leakage bucking circuit is provided according to processor generate the counteracting of the carrier wave for offsetting transmitter
Signal.
According to one embodiment, the leakage bucking circuit includes：Phase shifter 712 and modulator 713, wherein the shifting
The control terminal of phase device 712 is connected to an output end of processor 130, and input terminal is connected to the one of the power splitter 726 of transmitter
A signal output end, the phase control signal for being provided according to processor carry out phase shift 180 degree to the carrier wave of transmitter；It is described
The control terminal of modulator 713 is connected to an output end of processor 130, and input terminal is connected to the output end of phase shifter 712, uses
The signal of the output end of phase shifter 712 is adjusted into line amplitude in the amplitude control signal provided according to processor 130, makes the width
Degree is equal to the amplitude of transmitter leakage carrier wave.The present invention counteracts transmitter leakage due to being provided with leakage bucking circuit
Carrier wave, to improve the sensitivity of receiver.
According to one embodiment, communication unit further includes oscillator 725 and frequency synthesizer 726, and the oscillator 725 is used
In the signal for generating fixed frequency；The frequency synthesizer 726 carries out frequency synthesis to transmitting to frequency caused by oscillator
Device provides carrier signal, and local oscillation signal is provided to receiver.
According to one embodiment, the transmitter originator digital units 729 and originator analogue unit, the originator number list
The member signal to be sent processor carries out message sink coding and information coding into two paths of signals TX-I and TX-Q, is then supplied to hair
Analogue unit, originator analogue unit is held to multiply including the first frequency multiplier 717, the first phase shifter 710, the first multiplier 706 and second
Musical instruments used in a Buddhist or Taoist mass 705, first frequency multiplier 717 are used to carry out frequency multiplication to the signal that frequency synthesizer 726 provides and are supplied to first to multiply
Musical instruments used in a Buddhist or Taoist mass 706, the letter that the first multiplier 706 provides the roads the Q signal Tx-Q for the signal that processor to be sent and the first frequency multiplier 717
It number is multiplied;First phase shifter 710 is used to carry out 90 degree of phase shifts to signal caused by the first frequency multiplier 717 and be supplied to
The letter that second multiplier 705, the roads the I signal Tx-I for the signal that the second multiplier 705 will be sent and the first phase shifter 710 provide
It number is multiplied, the first multiplier 706 is added with the output signal of the second multiplier 705 is then supplied to amplifier.It is excellent
Selection of land, the roads the Q roads the signal Tx-Q and I signal Tx-I that processor 130 provides distinguish low-pass filtered device 708 and low-pass filter
707 provide the mutually orthogonal roads I signal and the roads Q signal to the second multiplier 705 and the first multiplier 706.Preferably, amplifier
Including driving amplifier 704 and power amplifier 703, drive amplification road device 703 is for putting the signal to be sent
Greatly, power amplifier is carried out through power amplifier 703 after, input terminal and straight-through end through directional coupler 702 are supplied to transmitting antenna
707.Coupled end of the high-frequency information of transmitting through the directional coupler 702 leakage signal SL that disappears is supplied to the defeated of directional coupler 728
Enter end.The straight-through end of directional coupler 728 is connected to the input terminal of change-over switch 715, and isolation end connects 50 Ohmic resistances；Conversion
715 1 output ends of switch are connected to receiver through low-noise amplifier 716, another output end is supplied directly to receiver；
The coupled end of directional coupler 728 is connected to the output end of modulator 713, for offsetting leakage letter using offseting signal Sc
Number SL, to which the leakage signal SL that makes to disappear is balanced out and then provides receiver sensitivity.
According to one embodiment, the receiver includes receiving end analogue unit and receiving end digital units 730, the receiving end mould
Quasi-simple member include the second frequency multiplier 727, the second phase shifter 720, third multiplier 722 and the 4th multiplier 717, described second times
Frequency device 727 is used to carry out frequency multiplication to the signal that frequency synthesizer 726 provides and is supplied to third multiplier 722, third multiplier
722 are multiplied received signal with the signal that the second frequency multiplier 727 provides, then 723 low-pass filtering of low-pass filtered device
The roads the Q signal received;Second phase shifter 720 is used to carry out 90 degree of phase shifts simultaneously to signal caused by the second frequency multiplier 727
It is supplied to the 4th multiplier 717, the 4th multiplier 717 that received signal and the signal that the second phase shifter 720 provides are carried out phase
Multiply the roads the I signal that 718 low-pass filtering of low-pass filtered device is received.Preferably, the roads Q signal is through 724 low frequency of low-frequency amplifier
Amplification obtains Rx-Q, is then supplied to receiving end digital units 730；The roads I signal amplifies to obtain Rx- through 719 low frequency of low-frequency amplifier
I is then supplied to receiving end digital units 730.Receiving end digital units 730 are decoded according to the Rx-Q and Rx-I of reception and then carry
Processor 130 is supplied, processing calculates the amplitude and phase of offseting signal Sc caused by bucking circuit according to received signal
Position, to control the phase shifter in low electric eliminating road phase shift and modulator needed for amplitude modulation amount.
Communication unit provided by the invention is as a result of bucking circuit, to improve the sensitivity of communication unit, into
And it improves plasma air purifying device and receives the sensitive of signal.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be to be connected directly, the connection inside two elements can also can also be indirectly connected through an intermediary.For this field
Those of ordinary skill for, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of plasma fresh air system based on Internet of Things comprising control subsystem, AC power and plasma processor,
Control subsystem control AC power to give plasma processor to provide AC energy, plasma processor include shell and
The first electrode plate being arranged along airflow direction and second electrode plate being arranged in shell, on first electrode plate and second electrode plate
Venthole in rectangular arrangement is set, be additionally provided on first electrode plate M*N be in rectangular arrangement spike electrode, second
The M*N annular electrodes in rectangular arrangement are additionally provided on electrode plate, the M and N are the integer more than or equal to 1.
2. the plasma fresh air system according to claim 1 based on Internet of Things, which is characterized in that the AC power packet
It includes：Controller, rectifier, electric switch and transformer, the rectifier are used to alternating current being converted to Rectified alternating current；Transformer
Including the first primary coil, the second primary coil and secondary coil, controller controls electric switch so that Rectified alternating current to be applied to
On first primary coil, and alternating current on plasma electrode is applied to from secondary coil output, which is characterized in that power supply further includes
Input voltage detector, output voltage detector, zero cross detection circuit, comparator, shift register, latch, clock signal
Generator, first and door, second and door and phase inverter, voltage detector are exported for detecting the voltage for being input to rectifier
End is connected to the reverse side of comparator；Two signals of zero cross detection circuit enter end and are connected to the second primary coil, defeated for detecting
Go out the period of voltage to generate the period square wave consistent with the period of output voltage；The input terminal of the phase inverter was connected to
The signal output end of null detector, output end are connected to first and are inputted with the first of door with the first input end of door and second
End；The signal output end of squarer is connected to first and the second signal input terminal of door and the clock of shift register
End；The reverse side of comparator is connected to the signal output end of voltage detector, and in-phase end is connected to the second primary coil, output end
It is connected to the signal input part of shift register；The signal output end of shift register is connected to the signal input part of latch；
The signal output end of latch is connected to the second signal input terminal of second and door, second with the signal output end of door through driver
It is supplied to controller, controller to control the working condition of electric switch according to the signal of input.
3. the plasma fresh air system according to claim 2 based on Internet of Things, which is characterized in that AC power further includes
Second transformer comprising at the beginning of the first of primary coil and secondary coil, the primary coil of the second transformer and the first transformer
Grade coil is in parallel, and the secondary wire coil of the secondary coil of the second transformer and the first transformer carries after being in series to plasma electrode
For electric energy.
4. the plasma fresh air system according to claim 1 based on Internet of Things, which is characterized in that control subsystem is also wrapped
Processor, matrix switch and gas sensor are included, the gas sensor is used to detect the concentration of the pernicious gas of local environment,
And concentration information is supplied to processor, the processor is according to the concentration information control matrix switch detected to which control is applied
It is added on the electric energy of plasma electrode.
5. the plasma fresh air system according to claim 4 based on Internet of Things, which is characterized in that plasma processor is also
Including pressure fan and alignment circuit, the processor provides control according to the concentration of the pernicious gas of local environment to alignment circuit
Signal is to adjust the rotating speed of pressure fan.
6. the plasma fresh air system according to claim 5 based on Internet of Things, which is characterized in that plasma processor is also
Including wind deflector, wind deflector is arranged along the downstream of airflow direction the second plasma battery plate, and the first face of wind deflector is for will
Plasma treated gas imported into exhaust outlet, contains ozone in the gas.
7. the plasma fresh air system according to claim 6 based on Internet of Things, which is characterized in that set in the side of shell
Multiple exhaust outlets are equipped with, for being oriented to air-flow to be discharged from exhaust outlet, the second face is and first in the second face of wind deflector
The opposite face in face.
8. the plasma fresh air system according to claim 5 based on Internet of Things, which is characterized in that plasma processor is also
The wind deflector and air draft plate being in the shape of the letter V including angle, wedge shape cavity is formed between wind deflector and the second plasma battery plate, will
Plasma treated gas imports exhaust outlet, ozone is contained in the gas, the air draft plate is for being oriented to air-flow
To be discharged from exhaust outlet.
9. the plasma fresh air system according to claim 7 or 8 based on Internet of Things, which is characterized in that the exhaust outlet
Place is provided with ozone decomposed device, is used for ozone reduction at oxygen, to form clean gas.
10. the plasma fresh air system according to claim 9 based on Internet of Things, which is characterized in that control subsystem is also
Including communication unit, communication unit includes that transmitter, receiver and leakage bucking circuit, handled device are connected to leakage and offset electricity
The control terminal on road, the input terminal for revealing bucking circuit are connected to transmitter, and control terminal is connected to processor, and output end, which is connected to, to be connect
Device is received, the control signal that the leakage bucking circuit is provided according to processor generates the counteracting letter of the carrier wave for offsetting transmitter
Number.
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| CN108548246B (en) | 2021-02-19 |
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