CN109573056A - Ice detection and application based on the excitation of radio frequency sharp discharge plasma - Google Patents
Ice detection and application based on the excitation of radio frequency sharp discharge plasma Download PDFInfo
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
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- MOWMLACGTDMJRV-UHFFFAOYSA-N nickel tungsten Chemical compound [Ni].[W] MOWMLACGTDMJRV-UHFFFAOYSA-N 0.000 claims description 6
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims description 5
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910001053 Nickel-zinc ferrite Inorganic materials 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- HPNSNYBUADCFDR-UHFFFAOYSA-N chromafenozide Chemical compound CC1=CC(C)=CC(C(=O)N(NC(=O)C=2C(=C3CCCOC3=CC=2)C)C(C)(C)C)=C1 HPNSNYBUADCFDR-UHFFFAOYSA-N 0.000 claims description 4
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- 229920001721 polyimide Polymers 0.000 claims description 4
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- CIOAGBVUUVVLOB-NJFSPNSNSA-N Strontium-90 Chemical compound [90Sr] CIOAGBVUUVVLOB-NJFSPNSNSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
- B64D15/20—Means for detecting icing or initiating de-icing
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Plasma Technology (AREA)
Abstract
The present invention relates to plasma potential sensing technologies, disclose it is a kind of based on radio frequency sharp discharge plasma excitation ice detection and application, device includes the sharp discharge sensor for being installed on aircraft easily icing portion faces, for the radio-frequency power supply of sharp discharge sensor power supply, and it is connected to the detection device of sharp discharge sensor, sharp discharge sensor includes stacking gradually the upper electrode pasted, insulating medium layer and lower electrode, lower electrode is covered on aircraft and easily freezes position, upper electrode and lower electrode are strip electrode, and one end tip triangular in shape, the triangular tip direction of upper electrode and lower electrode is oppositely arranged, and two top of the tip be located at perpendicular in the same plane of sharp discharge sensor.Plasma is generated on a sensor by the electric discharge of radio frequency sharp, and when ice sheet generates covering channel, sharp discharge sensor both end voltage can become smaller with channel narrows, thus whether quickly judgement freezes.
Description
Technical field
The present invention relates to plasma potential field of sensing technologies, more particularly to one kind to be based on radio frequency sharp plasma discharging
The ice detection of body excitation and application.
Background technique
For aircraft under the conditions of icing meteorology when flight, the super-cooling waterdrop in air hits aircraft surface, easily wing,
The parts surfaces such as tail-rotor, air intake duct, antenna house freeze, this will increase the weight of aircraft, and destroy the aerodynamic configuration of aircraft,
Its aerodynamic characteristics is influenced, flight safety is seriously affected, even can lead to fatal crass under extreme condition.Therefore, it is necessary to
In aircraft wing install icing detection sensor, quickly learn icing whether and ice layer thickness, to take corresponding measure deicing,
The generation that causes the accident because of icing is reduced, guarantees flight safety.
Common icing detection method includes: radiation line technology sensing, hot swapping senses, harmonic technology senses, and
Optical fiber type sensing.The radiation work that line technology sensing utilizes radioactive element strontium 90 is radiated, has pollution to environment；Hot swapping
It senses and rate is heated by measurement one firm power heat source heat sensitive element heating, determine ice layer thickness, exist centainly
Error rate；Harmonic technology sensing makes sensor elastic sensing element generate mechanical resonant using coil electromagnetism excitation, therefore, inspection
It is also larger to survey error.
The patent of invention of Publication No. CN104875894A discloses a kind of applicating medium barrier discharge plasma anti-caking
Ice production apparatus and method use the superposition of multilayer polyimide adhesive tape to paste as insulating layer, and top electrode and lower electrode are along insulating layer
Two sides dislocation is pasted, and top electrode parallel connection is connect with plasma electrical source anode, lower electrode parallel connection and plasma electrical source cathode
Connection, insulating layer are fixed in aircraft skin surface groove, realize the efficient anti-icing of aircraft surface.The patent of invention discloses
The Fibre Optical Sensor response time it is short, anti-icing effect is good, still, foregoing invention disclose technical solution be mainly used in deicing neck
Domain, and can not achieve the detecting function of icing.
Summary of the invention
To solve the above-mentioned problems, the first object of the present invention is to provide a kind of based on radio frequency sharp discharge plasma
The ice detection of excitation, the voltage change after plasma can be generated according to sharp discharge sensor judge aircraft etc.
Whether there is or not icings for easy ice field.
Ice detection provided by the invention based on the excitation of radio frequency sharp discharge plasma is by following technology
What scheme was realized:
Including being installed on the sharp discharge sensor for generating plasma of aircraft easily icing portion faces, being described
The radio-frequency power supply of sharp discharge sensor power supply, and be connected to the sharp discharge sensor and passed with detecting the sharp electric discharge
The detection device of voltage between sensor both ends, the sharp discharge sensor include stacking gradually the upper electrode pasted, insulation Jie
Matter layer and lower electrode, the lower electrode easily freeze position away from the aircraft that is covered on one side of insulating medium layer, the upper layer
Electrode and the lower electrode are strip electrode, and one end tip triangular in shape, and the upper electrode is far from triangular tip
A termination radio-frequency power supply anode, the termination radio-frequency power supply of the lower electrode far from triangular tip it is negative
The triangular tip direction of pole, the upper electrode and the lower electrode is oppositely arranged, and two top of the tips be located at perpendicular to
In the same plane of the sharp discharge sensor.
By using above-mentioned technical proposal, radio-frequency power supply is the power supply of sharp discharge sensor, is passing the electric discharge of radio frequency sharp
Plasma is generated on sensor, when ice sheet generate covering channel when, sharp discharge sensor both end voltage can with channel narrows and
Become smaller, whether according to the data variation of detection device to quickly judge to freeze.
It in some embodiments, further include the resistance being connected between the sharp discharge sensor and the radio-frequency power supply
Anti- match circuit, the output end of the radio-frequency power supply are connected to the primary side of the impedance matching circuit, the impedance matching electricity
The secondary end on road is connected to the anode of the sharp discharge sensor, the negativing ending grounding of the sharp discharge sensor.
By using above-mentioned technical proposal, impedance matching circuit not only can reduce the feedback power loss of radio-frequency power supply,
The on-load voltage that can be used for increasing radio-frequency power supply electrode both ends simultaneously, to realize the radio frequency discharge under different air pressures.
In some embodiments, the impedance matching circuit includes high frequency transformation coil and capacitor, the radio-frequency power supply
Anode be connected with after the capacitance connection with the anode of the primary side of the high frequency transformation coil, at the beginning of the high frequency transformation coil
The negative terminal at grade end is connected with the negative terminal of the radio-frequency power supply；The anode of the high frequency transformation coil secondary end and the sharp are discharged
The anode of sensor is connected, the negativing ending grounding of the high frequency transformation coil secondary end.
By using above-mentioned technical proposal, high frequency transformation coil is used to increase the on-load voltage at radio-frequency power supply electrode both ends,
To realize the radio frequency discharge under different air pressures.
In some embodiments, the high frequency transformation iron-core coil material is selected from nickel-zinc ferrite or manganese-zinc ferrite,
Its magnetic conductivity is 500-1500, and the coil ratio of the high frequency transformation coil is 1:3-1:10；The range of the capacitor is
10pF-50pF。
By using above-mentioned technical proposal, the core material of selection should guarantee the secondary coil sense in high frequency transformation coil
High voltage should be gone out, guarantee that the energy lost in high frequency transformation coil is smaller again, meanwhile, pass through the liter of high frequency transformation coil
Pressure realizes high voltage output so that the voltage at RF excited device both ends improves 3 to 10 times.
In some embodiments, the radio-frequency power supply is made of signal generating circuit and power amplification circuit, described to penetrate
The working frequency and output signal power of frequency power are continuously adjustable.
By using above-mentioned technical proposal, by adjusting the working frequency and output signal power of radio-frequency power supply, so that institute
It states radio-frequency power supply, the impedance matching circuit and the sharp discharge sensor and is in resonant state, freeze to reach detection
The purpose of situation.
In some embodiments, the insulating medium layer is made of polyimides or ceramic matric composite, described
Insulating medium layer is strip thin slice, and the length is 100mm-150mm, width 30mm-50mm, thickness 0.15mm-10mm.
By using above-mentioned technical proposal, guarantee dielectric not by high electrical breakdown.
In some embodiments, the lower electrode using copper, copper is tin plating or tungsten nickel plating is made, and the length is
30mm-50mm, width 5mm-10mm, with a thickness of 10 μm -100 μm.
By using above-mentioned technical proposal, avoid dimensional effect and near wall effect to guarantee flowing field stability, not by
Exogenous influence.
In some embodiments, the upper electrode using copper, copper is tin plating or tungsten nickel plating is made, and the length is
30mm-50mm, width 5mm-10mm, with a thickness of 10 μm -100 μm.
By using above-mentioned technical proposal, avoid dimensional effect and near wall effect to guarantee flowing field stability, not by
Exogenous influence.
The second object of the present invention is to provide a kind of icing detection dress based on the excitation of radio frequency sharp discharge plasma
The application set is used to be installed on aircraft and easily freezes position, and to judge aircraft etc., easily whether there is or not icings for ice field.
It is provided by the invention based on radio frequency sharp discharge plasma excitation ice detection application be by with
What lower technical solution was realized:
The following steps are included:
S1: being installed on aircraft for the sharp discharge sensor and easily freeze position, make the upper electrode away from it is described absolutely
The one side of edge dielectric layer is concordant with aircraft easily icing portion faces；
S2: the radio frequency electrical of 500V-3000V is applied at the both ends of the sharp discharge sensor by the radio-frequency power supply
Pressure, adjusts the radio-frequency power supply, and the radio-frequency power supply, the impedance matching circuit and the sharp discharge sensor is made to be in humorous
Vibration state.
By using above-mentioned technical proposal,
In some embodiments in S2 radio-frequency power supply method of adjustment are as follows:
S21: keep the working frequency, pulse width and pulse period of the radio-frequency power supply in certain value, in 0~1500W
In the range of change the output power of the radio-frequency power supply, select optimal output power；
S22: being kept for output power, pulse width and the pulse period of the radio-frequency power supply in certain value, 2kHz~
Change the working frequency of the radio-frequency power supply in the range of 10MHz, selects optimum working frequency；
S23: the output power and working frequency for keeping the radio-frequency power supply change in the range of 1-500 μ s in certain value
Become the pulse width of the radio-frequency power supply, and change the pulse period of the radio-frequency power supply in the range of 1-50ms, selects
Optimal pulse width and optimal pulse period.
By using above-mentioned technical proposal, plasma is generated by the electric discharge of radio frequency sharp on a sensor, when ice sheet produces
When raw covering channel, sharp discharge sensor both end voltage can become smaller with channel narrows, thus whether quickly judgement freezes；And
Ice layer thickness is determined by voltage change, and at radio-frequency power supply, the impedance matching circuit and the sharp discharge sensor
When resonant state, sensing effect is best.
In conclusion the ice detection of present disclosure motivated based on radio frequency sharp discharge plasma and application
It has the advantage that compared with prior art
1. generating plasma on a sensor by the electric discharge of radio frequency sharp, when ice sheet generates covering channel, sharp is put
Electric transducer both end voltage can become smaller with channel narrows, thus whether quickly judgement freezes；And ice is determined by voltage change
Thickness degree；
2. the ice detection provided by the invention based on the excitation of radio frequency sharp discharge plasma, Mechanical Reliability
By force, movement-less part, in addition to wing, applying also for air intake duct, tail-rotor, antenna house etc. has similar to there is anti-deicing demand, needs
Judge whether the position to freeze, in addition, this method has many advantages, such as that reaction speed is fast, small in size, in aircraft icing sensing side
Mask has wide practical use.
Detailed description of the invention
Fig. 1 is the circuit theory of the ice detection provided by the invention based on the excitation of radio frequency sharp discharge plasma
Figure；
Fig. 2 is the structure half section schematic of sharp discharge sensor shown in FIG. 1；
Fig. 3 is structural schematic diagram when sharp discharge sensor shown in Fig. 1 is arranged on aircraft wing；
Fig. 4 is the enlarged drawing in Fig. 3 at A.
In figure: 1, sharp discharge sensor；10, wing；101, radio-frequency power supply；102, impedance matching circuit；103, it detects
Device；11, upper electrode；12, insulating medium layer；13, lower electrode；201, high frequency transformation coil；202, capacitor.
Specific embodiment
It is motivated to provided by the invention based on radio frequency sharp discharge plasma below in conjunction with the drawings and the specific embodiments
Ice detection be described in further details.
It is easy for detecting aircraft the present invention discloses the ice detection motivated based on radio frequency sharp discharge plasma
The ice condition at icing position, aircraft easily icing position includes the positions such as wing, air intake duct, tail slurry, antenna house, the present invention this
In embodiment, it is illustrated for being installed on 10 position of aircraft wing.
Embodiment 1:
As shown in Figure 1, the ice detection based on the excitation of radio frequency sharp discharge plasma of present disclosure includes
It is installed on the sharp discharge sensor 1 for being used to generate plasma of 10 leading edge uper side surface of aircraft wing.As shown in Fig. 2, sharp
Sharp discharge sensor 1 includes stacking gradually the bar shaped upper electrode 11, bar shaped insulating medium layer 12 and bar shaped lower electrode pasted
13.Wherein, upper electrode 11 is made of tungsten nickel plating, and its length is set to 30mm, and width is set to 5mm, and thickness is set to 35 μm；Absolutely
Edge dielectric layer 12 selects polyimides to be made, and its length is set to 100mm, and width is set to 30mm, and thickness is set to 0.18mm；Lower layer
Electrode 13 selects copper product to be made, and its length is set to 30mm, and width is set to 5mm, and thickness is set to 35 μm, select above-mentioned material and
Upper electrode 11, insulating medium layer 12 and the lower electrode 13 of size prevent simultaneously to avoid dimensional effect and near wall effect
By high electrical breakdown, to guarantee flowing field stability.As shown in Fig. 2, wherein one end is distinguished for upper electrode 11 and lower electrode 13
Tip triangular in shape, and upper electrode 11 and the triangular tip direction of lower electrode 13 are oppositely arranged, and two top of the tip positions
In the same plane perpendicular to sharp discharge sensor 1.As shown in Figure 3 and Figure 4, lower electrode 13 deviates from insulating medium layer 12
Be covered on aircraft wing 10 on one side, i.e., as shown in Figure 3 and Figure 4, offer and be used in 10 leading edge uper side surface of aircraft wing
The groove of sharp discharge sensor 1 is installed, the length direction of groove is along 10 leading edge edge contour direction of aircraft wing, and sharp is put
After the length direction of electric transducer 1 is arranged along groove length direction, and sharp discharge sensor 1 is installed in groove, upper layer
Electrode 11 is flushed with 10 surface of aircraft wing, guarantees 10 surfacing of wing without protrusion.
As shown in Figure 1, the ice detection based on the excitation of radio frequency sharp discharge plasma of present disclosure also wraps
Include the radio-frequency power supply 101 powered for sharp discharge sensor 1, and be connected to radio-frequency power supply 101 and sharp discharge sensor 1 it
Between impedance matching circuit 102.Radio-frequency power supply 101 is made of signal generating circuit and power amplification circuit, radio-frequency power supply 101
Working frequency and output signal power are continuously adjustable, and in this embodiment of the invention, operational frequency bandwidth is 2kHz~6MHz,
But it is not limited to the bandwidth range, other working frequencies, such as 10kHz~10MHz, output letter can be used in other embodiments
Number power bracket is 0~500W, but is not limited to the power bracket, in other embodiments can be according to air pressure, electrode gap
Etc. conditions use other output power ranges, such as 0~1500W, the purpose is to make radio-frequency power supply 101, impedance matching circuit 102
And sharp discharge sensor 1 is in resonant state.The parameters such as working frequency, the output power of radio-frequency power supply 101 can pass through serial ports
Or other means adjusted in real time, in one particular embodiment of the present invention, radio-frequency power supply 101 can be used the U.S. T&C public affairs
The AG1024 type radio-frequency power amplifier of department, specific structure are no longer described in detail；Impedance matching circuit 102 includes high frequency transformation coil
201 and capacitor 202, anode with the primary side of high frequency transformation coil 201 after the anode of radio-frequency power supply 101 is connect with capacitor 202
It is connected, the negative terminal of 201 primary side of high frequency transformation coil is connected with the negative terminal of radio-frequency power supply 101,201 secondary end of high frequency transformation coil
Anode be connected with the anode (i.e. the one end of upper electrode 11 far from triangular tip) of sharp discharge sensor 1, high frequency transformation
The negative terminal of 201 secondary end of coil and the negative terminal (i.e. the one end of lower electrode 13 far from triangular tip) of sharp discharge sensor 1
It is connected, while the negativing ending grounding of 201 secondary end of high frequency transformation coil.In this embodiment of the invention, high frequency transformation coil 201
The optional cylindricality of shape, I-shaped or hat, 201 iron core material of high frequency transformation coil are selected from nickel-zinc ferrite or manganese-zinc ferrite
(being illustrated for selecting nickel-zinc ferrite in this embodiment of the invention), magnetic conductivity 500-1500, high frequency becomes
The coil ratio of crimping circle 201 is 1:3-1:10；The range of capacitor 202 is 10pF-50pF, in this embodiment of the invention
With optimal value, i.e. magnetic conductivity is 200, and the turn ratio of coil is 1:5, and the value of capacitor 202 is 20pF.Impedance matching circuit 102
Actual functional capability is not limited in reducing the feedback power loss of radio-frequency power supply 101, moreover it can be used to increase 101 electrode two of radio-frequency power supply
The on-load voltage at end, to realize the radio frequency discharge under different air pressures.
As shown in Figure 1, the ice detection based on the excitation of radio frequency sharp discharge plasma of present disclosure also wraps
It includes and is connected to sharp discharge sensor 1 to detect the detection device 103 of voltage between 1 both ends of sharp discharge sensor, in the present invention
In this embodiment, detection device 103 visits voltage using voltage between voltage detector detection 1 both ends of sharp discharge sensor
Needle is connected to the positive and negative terminal both ends of sharp discharge sensor 1.
Therefore, the ice detection based on the excitation of radio frequency sharp discharge plasma of present disclosure is put by radio frequency
Electric hand section generates plasma on sharp discharge sensor 1, and when 10 aerofoil of wing freezes, plasma discharge channels are hindered
Plug a part, 1 both end voltage of sharp discharge sensor become smaller, and the variation of the voltage detected according to detection device 103 is to judge
Whether there is or not icings for the easy ice field such as wing 10, and quickly show aerofoil icing thickness according to voltage change amplitude.
Embodiment 2
The ice detection based on the excitation of radio frequency sharp discharge plasma of present disclosure, structure and embodiment
It is essentially identical in 1, the difference is that:
In the embodiment of the present invention 2, upper electrode 11 is made of copper, and its length is set to 50mm, and width is set to 10mm,
Thickness is set to 10 μm；Insulating medium layer 12 is strip thin slice made of ceramic matric composite, and its length is set to 150mm, wide
Degree is set to 50mm, and thickness is set to 10mm；Lower electrode 13 is made of copper is tin plating, and its length is set to 50mm, and width is set to
10mm, thickness are set to 10 μm.
In addition, 201 iron core material of high frequency transformation coil is selected from manganese-zinc ferrite, magnetic conductivity in the embodiment of the present invention 2
It is 500, coil ratio 1:3；The range of capacitor 202 is 10pF.
Embodiment 3
The ice detection based on the excitation of radio frequency sharp discharge plasma of present disclosure, structure and embodiment
It is essentially identical in 1, the difference is that:
In the embodiment of the present invention 3, upper electrode 11 is made of copper is tin plating, and its length is set to 40mm, and width is set to
8mm, thickness are set to 100 μm；Insulating medium layer 12 is strip thin slice made of ceramic matric composite, and its length is set to
120mm, width are set to 40mm, and thickness is set to 0.15mm；Lower electrode 13 is made of tungsten nickel plating, and its length is set to 40mm,
Width is set to 8mm, and thickness is set to 100 μm.
Table 1 shows the dielectric strength of the sharp discharge sensor into embodiment 3 of implementation 1:
Table 1: the dielectric strength table of comparisons of sharp discharge sensor
As it can be seen from table 1 using the technical solution for being the offer of embodiment 1, the dielectric strength of sharp discharge sensor
Highest, therefore, anti-breakdown are best.
In addition, 201 iron core material of high frequency transformation coil is selected from manganese-zinc ferrite, magnetic conductivity in the embodiment of the present invention 3
It is 500, coil ratio 1:3；The range of capacitor 202 is 10pF.
Invention further discloses the application of the above-mentioned ice detection based on the excitation of radio frequency sharp discharge plasma, tools
Body the following steps are included:
S1: being installed on aircraft for sharp discharge sensor 1 and easily freeze position, makes upper electrode 11 away from insulating medium layer 12
One side it is concordant with aircraft easily icing portion faces；
S2: connection circuit applies penetrating for 500V-3000V at the both ends of sharp discharge sensor 1 by radio-frequency power supply 101
Frequency voltage adjusts radio-frequency power supply 101, radio-frequency power supply 101, impedance matching circuit 102 and sharp discharge sensor 1 is made to be in resonance
State, specifically, the voltage that radio-frequency power supply 101 is applied to 1 both ends of sharp discharge sensor is in this embodiment of the invention
2000V adjusts radio-frequency power supply 101 under this voltage:
S21: kept for working frequency, pulse width and the pulse period of radio-frequency power supply 101 in certain value, 0~1500W's
Change the output power of radio-frequency power supply 101, observation voltage and ice layer thickness non-linear relation figure in range, voltage can be reached by finding
Output power corresponding to codomain；
S22: being kept for output power, pulse width and the pulse period of radio-frequency power supply 101 in certain value, 2kHz~
Change the working frequency of radio-frequency power supply 101, observation voltage and ice layer thickness non-linear relation figure in the range of 10MHz, finds energy
Reach working frequency corresponding to voltage domain；
S23: the output power and working frequency for keeping radio-frequency power supply 101 change in the range of 1-500 μ s in certain value
The pulse width of radio-frequency power supply 101, and in the range of 1-50ms change radio-frequency power supply 101 pulse period, observe voltage
With ice layer thickness non-linear relation figure, the pulse period corresponding to voltage domain can be reached by finding.
Obtaining optimal output power by the above method is 300W, optimum working frequency 1.20MHz, optimal pulse width
For 500 μ s and optimal pulse period 5ms, resonance frequency is about 1.20MHz, and the step-up ratio of impedance matching circuit 102 is 1:4.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. the ice detection based on the excitation of radio frequency sharp discharge plasma, which is characterized in that easy including being installed on aircraft
The sharp discharge sensor (1) for generating plasma of icing portion faces is powered for the sharp discharge sensor (1)
Radio-frequency power supply (101), and be connected to the sharp discharge sensor (1) to detect the sharp discharge sensor (1) two
The detection device (103) of voltage between end, the sharp discharge sensor (1) include stack gradually the upper electrode (11) pasted,
Insulating medium layer (12) and lower electrode (13), the lower electrode (13) are winged away from being covered on one side for insulating medium layer (12)
Machine easily freezes position, and the upper electrode (11) and the lower electrode (13) are strip electrode, and one end point triangular in shape
End, the anode of the termination radio-frequency power supply (101) of the upper electrode (11) far from triangular tip, the lower electrode
(13) cathode of the termination radio-frequency power supply (101) far from triangular tip, the upper electrode (11) and the lower layer
The triangular tip direction of electrode (13) is oppositely arranged, and two top of the tips are located at perpendicular to the sharp discharge sensor (1)
Same plane in.
2. the ice detection according to claim 1 based on the excitation of radio frequency sharp discharge plasma, feature exist
In further including the impedance matching circuit being connected between the sharp discharge sensor (1) and the radio-frequency power supply (101)
(102), the output end of the radio-frequency power supply (101) is connected to the primary side of the impedance matching circuit (102), the impedance
Secondary end with circuit (102) is connected to the anode of the sharp discharge sensor (1), the sharp discharge sensor (1)
Negativing ending grounding.
3. the ice detection according to claim 2 based on the excitation of radio frequency sharp discharge plasma, feature exist
In, the impedance matching circuit (102) include high frequency transformation coil (201) and capacitor (202), the radio-frequency power supply (101)
Anode is connected after connecting with the capacitor (202) with the anode of the primary side of the high frequency transformation coil (201), and the high frequency becomes
The negative terminal of crimping circle (201) primary side is connected with the negative terminal of the radio-frequency power supply (101)；The high frequency transformation coil (201) is secondary
The anode at grade end is connected with the anode of the sharp discharge sensor (1), and high frequency transformation coil (201) secondary end is born
End ground connection.
4. the ice detection according to claim 3 based on the excitation of radio frequency sharp discharge plasma, feature exist
In high frequency transformation coil (201) the iron core material is selected from nickel-zinc ferrite or manganese-zinc ferrite, magnetic conductivity 500-
1500, the coil ratio of the high frequency transformation coil (201) is 1:3-1:10；The range of the capacitor (202) is 10pF-
50pF。
5. the ice detection according to claim 1 based on the excitation of radio frequency sharp discharge plasma, feature exist
In the radio-frequency power supply (101) is made of signal generating circuit and power amplification circuit, the work of the radio-frequency power supply (101)
Frequency and output signal power are continuously adjustable.
6. the ice detection according to claim 1 based on the excitation of radio frequency sharp discharge plasma, feature exist
In the insulating medium layer (12) is made of polyimides or ceramic matric composite, and the insulating medium layer (12) is item
Shape thin slice, and the length is 100mm-150mm, width 30mm-50mm, thickness 0.15mm-10mm.
7. the ice detection according to claim 1 based on the excitation of radio frequency sharp discharge plasma, feature exist
In, the lower electrode (13) using copper, copper is tin plating or tungsten nickel plating is made, and the length is 30mm-50mm, width 5mm-
10mm, with a thickness of 10 μm -100 μm.
8. the ice detection according to claim 1 based on the excitation of radio frequency sharp discharge plasma, feature exist
In, the upper electrode (11) using copper, copper is tin plating or tungsten nickel plating is made, and the length is 30mm-50mm, width 5mm-
10mm, with a thickness of 10 μm -100 μm.
9. the application of the ice detection as claimed in claim 3 based on the excitation of radio frequency sharp discharge plasma, feature
It is, comprising the following steps:
S1: being installed on aircraft for the sharp discharge sensor (1) and easily freeze position, makes the upper electrode (11) away from described
The one side of insulating medium layer (12) is concordant with aircraft easily icing portion faces；
S2: the radio frequency of 500V-3000V is applied at the both ends of the sharp discharge sensor (1) by the radio-frequency power supply (101)
Voltage adjusts the radio-frequency power supply (101), makes the radio-frequency power supply (101), the impedance matching circuit (102) and the point
Sharp discharge sensor (1) is in resonant state.
10. the application of the ice detection according to claim 9 based on the excitation of radio frequency sharp discharge plasma,
It is characterized in that, the method for adjustment of radio-frequency power supply (101) in S2 are as follows:
S21: keep the working frequency, pulse width and pulse period of the radio-frequency power supply (101) in certain value, in 0~1500W
In the range of change the output powers of the radio-frequency power supply (101), select optimal output power；
S22: being kept for output power, pulse width and the pulse period of the radio-frequency power supply (101) in certain value, 2kHz~
Change the working frequency of the radio-frequency power supply (101) in the range of 10MHz, selects optimum working frequency；
S23: the output power and working frequency for keeping the radio-frequency power supply (101) change in the range of 1-500 μ s in certain value
Become the pulse width of the radio-frequency power supply (101), and changes the pulse of the radio-frequency power supply (101) in the range of 1-50ms
Period selects optimal pulse width and optimal pulse period.
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