CN107300725A - A kind of flexible sleet sensor of magnetic hysteresis and icing thickness detecting method - Google Patents

A kind of flexible sleet sensor of magnetic hysteresis and icing thickness detecting method Download PDF

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Publication number
CN107300725A
CN107300725A CN201610231076.4A CN201610231076A CN107300725A CN 107300725 A CN107300725 A CN 107300725A CN 201610231076 A CN201610231076 A CN 201610231076A CN 107300725 A CN107300725 A CN 107300725A
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China
Prior art keywords
magnetic hysteresis
flexible probe
frequency
sleet
flexible
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CN201610231076.4A
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CN107300725B (en
Inventor
李旭光
刘钧
刘俊杰
张弛
张淇海
张彬彬
杨毕宣
王亚静
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HUAYUN SOUNDING (BEIJING) METEOROLOGICAL TECHNOLOGY Corp
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HUAYUN SOUNDING (BEIJING) METEOROLOGICAL TECHNOLOGY Corp
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance

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  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The invention discloses a kind of flexible sleet sensor of magnetic hysteresis, including：The flexible probe of magnetic hysteresis；Housing, cavity is provided with the housing, the flexible probe segment of the magnetic hysteresis is extended in the cavity, the flexible probe of the magnetic hysteresis is connected with the housing, and the part that the flexible probe of the magnetic hysteresis is located in the cavity, which is provided between driving coil and induction coil and the driving coil and induction coil, is provided with magnetic shield；Heater, the sleet for melting the flexible detecting head surface of the magnetic hysteresis；Circuit is controlled, it is connected with the driving coil, the induction coil and heater.The present invention can interpolate that the generation of sleet, detects sleet thickness equivalent, is conducive to meteorological INTEGRATED SIGHT and prevents and reduces natural disasters.

Description

A kind of flexible sleet sensor of magnetic hysteresis and icing thickness detecting method
Technical field
The present invention relates to meteorological detection technique field, and in particular to a kind of flexible sleet sensing of magnetic hysteresis Device and icing thickness detecting method.
Background technology
Sleet is made up of mixture of ice and water, and the object collision with temperature less than 0 DEG C freezes immediately Precipitation, a kind of diastrous weather that the time at the beginning of being early winter or last month of spring in winter is seen.Less than 0 DEG C Raindrop can keep supercooled state in the air that temperature is slightly below 0 DEG C, and its outward appearance is with general rain Drop is identical, and when it is fallen on the object that temperature is less than 0 DEG C, smooth in appearance is frozen at once And transparent ice sheet, referred to as glaze.Serious glaze can break trees, electric pole, make communication, Power supply stops, and hinders highway and railway traffic, threatens the flight safety of aircraft.
Observation station to the observation of sleet by the condensation phenomenon that is immediately seen on earth's surface object come It is determined that, it is impossible to observed by weather radar, doppler instrument or other traditional observation methods；But Come the possibility of indirect estimated sleet formation can have much by radar.The reflection of radar signal Intensity is relevant with the radius of the form of precipitation.Although it is more stronger than the signal for reflection of snowing to rain, Because the radius ratio snowflake of raindrop is much smaller, therefore the rain come from snow melt unlike avenging before Signal is how many by force.
The content of the invention
For defect present in prior art, stretched it is an object of the invention to provide a kind of magnetic hysteresis Contracting sleet sensor and icing thickness detecting method, can interpolate that the generation of sleet, detect sleet Thickness equivalent, is conducive to meteorological INTEGRATED SIGHT and prevents and reduces natural disasters.
To achieve the above objectives, the present invention is adopted the technical scheme that：
A kind of flexible sleet sensor of magnetic hysteresis, including：
The flexible probe of magnetic hysteresis；
Cavity is provided with housing, the housing, the flexible probe segment of the magnetic hysteresis extends to described In cavity, the flexible probe of the magnetic hysteresis is connected with the housing, and the flexible probe of the magnetic hysteresis is located at Part in the cavity is provided with driving coil and induction coil and the driving coil and sense Answer and magnetic shield is provided between coil；
Heater, the sleet for melting the flexible detecting head surface of the magnetic hysteresis；
Circuit is controlled, it is connected with the driving coil, the induction coil and heater.
On the basis of above-mentioned technical proposal, the heater includes heating rod, the heating Rod is installed on the cavity close to the side of the flexible probe of the magnetic hysteresis, and the heating rod is upper End is extended in the flexible probe of the magnetic hysteresis.
On the basis of above-mentioned technical proposal, it is provided with the housing under spring, the spring End is provided with spring mountings, and the upper end of the spring is provided with heating rod fixture, the spring Upper end supports the fixed heating rod fixture, and the heating rod fixture fixes the heating Rod.
On the basis of above-mentioned technical proposal, temperature sensor is provided with the inner chamber of the housing, The temperature sensor is used for the temperature for testing the housing.
On the basis of above-mentioned technical proposal, the housing includes upper shell, lower house and base, The lower end of the upper shell and the junction of the lower house are provided with upper sealing ring, the lower house Lower seal is provided with the junction of the base；The flexible probe segment of the magnetic hysteresis extends to institute State in upper shell, and the flexible probe of the magnetic hysteresis is connected with the upper end of the upper shell.
On the basis of above-mentioned technical proposal, the intracavity diameter of the upper shell is less than the lower casing The intracavity diameter of body, the interior of the lower house is provided with circuit supporting plate, and the control circuit is installed In the circuit supporting plate.
On the basis of above-mentioned technical proposal, the control circuit includes heating control circuit, driven Dynamic circuit, receiving circuit and microprocessor, the heating control circuit connect the heater And microprocessor, the drive circuit connects the driving coil and the microprocessor, described Receiving circuit connects the induction coil and the microprocessor.
On the basis of above-mentioned technical proposal, comprise the following steps：
Step 1, the original resonance frequency f of the flexible sleet sensor of magnetic hysteresis under Light Condition is set, Maximum measurement thickness is hmax, the ratio between ice rain amounts of thickness variation and resonant frequency variable quantity Coefficient k；
Step 2, gradually simultaneously linear change is applied in driving coil in a measurement period The frequency f of drive signaln, while recording the frequency f of each drive signalnCorresponding induction coil Induced voltage Un；
Step 3, the induced voltage U of induction coil record is comparedn, and find out maximum induced voltage UnxCorresponding resonant frequency fnx；
Step 4, according to the maximum induced voltage U of step 3nxCorresponding resonant frequency fnx, Calculate icing thickness h=(f-f on the flexible probe of current magnetic hysteresisnx)/k。
On the basis of above-mentioned technical proposal, wherein, step 2 is comprised the following steps that：
If driving signal frequency fnValue be：fn=f1+(n-1)Δf
Wherein, f1For default original frequency, Δ f is increase driving signal frequency every time, and n is Drive signal is applied to the number of times of driving coil,
By driving signal frequency fn=f1+ (n-1) Δ f is applied to driving coil, records each driving letter Number frequency fnThe induced voltage U of corresponding induction coiln；By driving signal frequency fnWith it is first Beginning, resonant frequency f made comparisons,
If fn=f, then into step 3；
If fn≠ f, then gradually increase n value, wherein n is >=1 natural number, until fn=f, Into step 3.
On the basis of above-mentioned technical proposal, wherein, default original frequency f1=f-k*h.
Compared with prior art, the advantage of the invention is that：
(1) a kind of flexible sleet sensor of magnetic hysteresis of the invention includes the flexible probe of magnetic hysteresis, shell Body, heater and control circuit, the flexible probe of magnetic hysteresis are used to sense sleet, are installed on housing Interior driving coil and induction coil are used for encouraging the flexible probe of magnetic hysteresis and detect signal, Ke Yijin One step detects the thickness of sleet, and measurement result is accurate；In order to avoid the flexible probe length of magnetic hysteresis Time icing condition, melts the frost of the flexible detecting head surface of magnetic hysteresis by heater so that survey Measure result more accurate, can be effective by measurement result and many key element weather stations use in conjunction Make weather observations situation, be antifreeze, take precautions against natural calamities and the preparation of abundance is done with mitigation.
(2) it is additionally provided with temperature in a kind of housing of the flexible sleet sensor of magnetic hysteresis in the present invention Sensor, temperature sensor is used for the temperature for detecting surface of shell, effectively prevents heater mistake Degree heating, is further ensured that the accuracy of measurement result.
(3) a kind of housing of the flexible sleet sensor of magnetic hysteresis of the invention is provided with spring and spring Fixture, because sensor and contacting rain water need to have preferably sealing, spring of the invention It is used to heating rod is fixedly mounted with spring mountings, it is to avoid the globality of destruction housing is installed in punching And sealing, prevent sensor from crossing water, the situation that internal wiring is burnt out occurs；Simultaneously spring and The structure of spring mountings is relatively simple, is easy to combination to install, good fixing effect.
(4) a kind of magnetic hysteresis of the invention stretches sleet sensor using the flexible principle progress of magnetic hysteresis Icing Thickness sensitivity, constantly changes the driving letter for putting on driving coil in a measurement period Number frequency, and record the size of corresponding induced voltage, maximum sensing gone out by multilevel iudge The corresponding frequency of voltage is how many, and this frequency is exactly the resonant frequency of the flexible probe of magnetic hysteresis, and then Calculate sleet thickness.The icing thickness detecting method of the present invention, with very high sensitivity, Influence of the steam to measurement result can be avoided based on the flexible principle detection sleet of magnetic hysteresis, improve and survey The accurate fixed and reliability of amount.
Brief description of the drawings
Fig. 1 is overall structure diagram in the embodiment of the present invention.
The A-A sectional views that Fig. 2 is Fig. 1 in the present invention.
Fig. 3 is the sectional view of the embodiment of the present invention.
Fig. 4 is Fig. 3 of the present invention H partial enlarged drawing.
Fig. 5 is schematic block circuit diagram of the invention.
In figure：The flexible probe of 10- magnetic hysteresis, 11- driving coils, 12- induction coils, 13- chokes Circle, 14- heating rods, 15- springs, 16- spring mountings, 17- heating rod fixtures, 18- electricity Road supporting plate, 20- housings, 21- upper shells, 22- lower houses, 23- bases, the upper sealing rings of 24-, 25- lower seals.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Referring to shown in Fig. 1 to Fig. 5, the embodiment of the present invention provides a kind of magnetic hysteresis flexible sleet sensing Device, including：
Housing 20, it includes upper shell 21, lower house 22 and base 23, the He of upper shell 21 Lower house 22 is cylindrical, and diameter of the diameter less than lower house 22 of upper shell 21, The lower end of upper shell 21 is provided with upper sealing ring 24, lower house 22 with the junction of lower house 22 Lower seal 25 is provided with the junction of base 23, base 23 is offered for being fastened with boat The mounting hole of blind plug.
The flexible probe 10 of magnetic hysteresis, it is made up of Fe-Ni alloy Magnetostrictive material, and magnetic hysteresis is stretched Contracting probe 10 is cylindric empty provided with lower ending opening in the flexible probe 10 of magnetic hysteresis in cylindrical shape Chamber, the flexible probe 10 of magnetic hysteresis is extended partially into upper shell 21, and the flexible probe 10 of magnetic hysteresis Outer surface be connected with the upper end of upper shell 21.
Lower house 22 is equipped with the inner chamber of cylindrical shape, the inner chamber of upper shell 21 with upper shell 21 Diameter is less than the intracavity diameter of lower house 22, and inner chamber and the upper shell 21 of lower house 22 Inner chamber forms the cavity run through to UNICOM.The lower end of the flexible probe 10 of magnetic hysteresis extends to upper shell In 21, and now inner chamber, the inner chamber of upper shell 21 and the lower house of the flexible probe 10 of magnetic hysteresis 22 inner chamber is coaxial.
The outer surface of the flexible probe 10 of magnetic hysteresis in the inner chamber of upper shell 21 is provided with to magnetic hysteresis Flexible probe 10 carries out the driving coil 11 of excitation, the magnetic characteristic to the flexible probe 10 of magnetic hysteresis The induction coil 12 that is detected of change and for separating driving coil 11 and induction coil 12 choke coil 13, induction coil 12 is close to the upper end of the flexible probe 10 of magnetic hysteresis, drives line Circle 11 is had a contest the lower end of the flexible probe 10 of magnetic hysteresis, and choke coil 13 is located at induction coil 12 and driven Between moving winding 11.
Heater, it includes heating rod 14, and heating rod 14 is installed on the interior of upper shell 21 In the chamber and upper end of heating rod 14 is upwardly into the inner chamber of the flexible probe 10 of magnetic hysteresis, upper shell Spring 15 is provided with 21 inner chamber, one end of the inner chamber of lower house 22 is provided with spring mountings 16, spring mountings 16 fix the lower end of spring 15, and the upper end of spring 15 is provided with heating rod Fixture 17, the upper end of spring 15 supports fixed heating rod fixture 17, heating rod fixture 17 fix heating rod 14.
Temperature sensor is provided with the inner chamber of housing 20, temperature sensor is used to test housing 20 Temperature.
Control to be provided with circuit supporting plate 18, circuit supporting plate in circuit, the inner chamber of lower house 22 18 are used to install control circuit.Control circuit includes heating control circuit, drive circuit, connect Receive circuit, memory, voltage monitoring house dog, microprocessor and interface board, computer heating control electricity Road connects heating rod 14 and microprocessor, drive circuit connection driving coil 11 and microprocessor, Receiving circuit connects induction coil 12 and microprocessor, and memory connects microprocessor by bus Device, voltage monitoring house dog is connected with microprocessor, interface board connection microprocessor, and is each Circuit provides power supply
The works such as frequency calibration parameter, the heatingization ice time parameter of sensor are stored in memory Make parameter, voltage monitoring house dog ensures microprocessor because being caused program fleet by strong jamming After can recover in time.
Drive circuit is made up of DDS digital signal generators, DAC, high speed amplifier amplifier, Microprocessor controls DDS digital signal generators and DAC chip produces sine wave signal, then By operational amplifier drive the driving coil of rear end after power amplification.
Receiving circuit is made up of amplifying circuit, ADC analog to digital conversion circuits, and instrument amplifier will The faint voltage signal that induction coil is received is filtered amplification, the voltage signal after amplification Data signal is converted into high-speed ADC, then microprocessor is transferred to by spi bus, Microprocessor carries out a series of processing such as Fourier transformation to the data received and obtained after calculating Go out the thickness data that freezes.
Use the icing thickness detecting method of the flexible sleet sensor of above-mentioned magnetic hysteresis, including following step Suddenly：
Step 1, the original resonance frequency f of the flexible sleet sensor of magnetic hysteresis under Light Condition is set, Maximum measurement thickness is hmax, the ratio between ice rain amounts of thickness variation and resonant frequency variable quantity Coefficient k；
Step 2, the drive signal being applied in driving coil is gradually changed in a measurement period Frequency fn, while recording the frequency f of each drive signalnThe induced electricity of corresponding induction coil Press Un, comprise the following steps that：
If driving signal frequency fnValue be：fn=f1+(n-1)Δf
Wherein, f1For default original frequency, and f1=f-k*h, Δ f are increase driving letter every time Number frequency, n is the number of times that drive signal is applied to driving coil,
By driving signal frequency fn=f1+ (n-1) Δ f is applied to driving coil, records each driving letter Number frequency fnThe induced voltage U of corresponding induction coiln；By driving signal frequency fnWith it is first Beginning, resonant frequency f made comparisons,
If fn=f, then into step 3；
If fn≠ f, then gradually increase n value, wherein n is >=1 natural number, until fn=f, Into step 3；
Step 3, the induced voltage U of induction coil record is comparedn, and find out maximum induced voltage UnxCorresponding resonant frequency fnx；
Step 4, according to the maximum induced voltage U of step 3nxCorresponding resonant frequency fnx, Calculate icing thickness h=(f-f on the flexible probe of current magnetic hysteresisnx)/k。
The present invention is not limited to the above-described embodiments, for those skilled in the art For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, These improvements and modifications are also considered as within protection scope of the present invention.Do not make in this specification in detail The content of description belongs to prior art known to professional and technical personnel in the field.

Claims (10)

  1. The sleet sensor 1. a kind of magnetic hysteresis is stretched, it is characterised in that including：
    The flexible probe (10) of magnetic hysteresis；
    Cavity, the flexible probe (10) of the magnetic hysteresis are provided with housing (20), the housing (20) Extend partially into the cavity, the flexible probe (10) of the magnetic hysteresis and the housing (20) It is connected, the part that the flexible probe (10) of the magnetic hysteresis is located in the cavity is provided with drives line Enclose (11) and induction coil (12) and the driving coil (11) and induction coil (12) Between be provided with magnetic shield；
    Heater, the sleet for melting flexible probe (10) surface of the magnetic hysteresis；
    Control circuit, it is with the driving coil (11), the induction coil (12) and plus Thermal is connected.
  2. The sleet sensor 2. a kind of magnetic hysteresis as claimed in claim 1 is stretched, it is characterised in that： The heater includes heating rod (14), and the heating rod (14) is installed on the cavity Close to the side of the flexible probe (10) of the magnetic hysteresis, and the upper end of the heating rod (14) is prolonged Extend in the flexible probe (10) of the magnetic hysteresis.
  3. The sleet sensor 3. a kind of magnetic hysteresis as claimed in claim 2 is stretched, it is characterised in that： Spring (15) is provided with the housing (20), the lower end of the spring (15) is provided with spring Fixture (16), the upper end of the spring (15) is provided with heating rod fixture (17), described The upper end of spring (15) supports the fixed heating rod fixture (17), and the heating rod is consolidated Determine the fixed heating rod (14) of part (17).
  4. The sleet sensor 4. a kind of magnetic hysteresis as claimed in claim 1 is stretched, it is characterised in that： Temperature sensor is provided with the inner chamber of the housing (20), the temperature sensor is used to test The temperature of the housing (20).
  5. The sleet sensor 5. a kind of magnetic hysteresis as claimed in claim 1 is stretched, it is characterised in that： The housing (20) includes upper shell (21), lower house (22) and base (23), described The lower end of upper shell (21) is provided with upper sealing ring (24) with the junction of the lower house (22), The lower house (22) and the junction of the base (23) are provided with lower seal (25)； The flexible probe (10) of the magnetic hysteresis is extended partially into the upper shell (21), and the magnetic Stagnant flexible probe (10) is connected with the upper end of the upper shell (21).
  6. The sleet sensor 6. a kind of magnetic hysteresis as claimed in claim 5 is stretched, it is characterised in that： The intracavity diameter of the upper shell (21) is less than the intracavity diameter of the lower house (22), institute State the interior of lower house (22) and be provided with circuit supporting plate (18), control circuit (30) peace Loaded on the circuit supporting plate (18).
  7. The sleet sensor 7. a kind of magnetic hysteresis as claimed in claim 1 is stretched, it is characterised in that： The control circuit includes heating control circuit, drive circuit, receiving circuit and microprocessor, The heating control circuit connects the heater and microprocessor, the drive circuit connection The driving coil and the microprocessor, the receiving circuit connect the induction coil and institute State microprocessor.
  8. 8. the icing thickness for the sleet sensor that stretched using a kind of magnetic hysteresis as claimed in claim 1 Spend detection method, it is characterised in that comprise the following steps：
    Step 1, the original resonance frequency f of the flexible sleet sensor of magnetic hysteresis under Light Condition is set, Maximum measurement thickness is hmax, the ratio between ice rain amounts of thickness variation and resonant frequency variable quantity Coefficient k；
    Step 2, gradually simultaneously linear change is applied in driving coil in a measurement period The frequency f of drive signaln, while recording the frequency f of each drive signalnCorresponding induction coil Induced voltage Un；
    Step 3, the induced voltage U of induction coil record is comparedn, and find out maximum induced voltage UnxCorresponding resonant frequency fnx；
    Step 4, according to the maximum induced voltage U of step 3nxCorresponding resonant frequency fnx, Calculate icing thickness h=(f-f on the flexible probe of current magnetic hysteresisnx)/k。
  9. 9. icing thickness detecting method as claimed in claim 8, it is characterised in that wherein, Step 2 is comprised the following steps that：
    If driving signal frequency fnValue be：fn=f1+(n-1)Δf
    Wherein, f1For default original frequency, Δ f is increase driving signal frequency every time, and n is Drive signal is applied to the number of times of driving coil,
    By driving signal frequency fn=f1+ (n-1) Δ f is applied to driving coil, records each driving letter Number frequency fnThe induced voltage U of corresponding induction coiln；By driving signal frequency fnWith it is first Beginning, resonant frequency f made comparisons,
    If fn=f, then into step 3；
    If fn≠ f, then gradually increase n value, wherein n is >=1 natural number, until fn=f, Into step 3.
  10. 10. icing thickness detecting method as claimed in claim 9, it is characterised in that：Wherein, F in step 21=f-k*h.
CN201610231076.4A 2016-04-14 2016-04-14 A kind of magnetic hysteresis is stretched sleet sensor and icing thickness detecting method Active CN107300725B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211082A (en) * 2018-09-14 2019-01-15 佛山市艾芯智能科技有限公司 A kind of detection method and detector of metal sheet thickness

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745804A (en) * 1986-12-08 1988-05-24 Dataproducts New England, Inc. Accretion type ice detector
CN2128729Y (en) * 1992-05-23 1993-03-24 王新平 Portable pachymeter
CN2160884Y (en) * 1993-03-04 1994-04-06 石油大学(华东) Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre
CN1448689A (en) * 2003-05-13 2003-10-15 大连理工大学 Contact type automatic ice and snow depth measuring method
CN201697603U (en) * 2010-04-22 2011-01-05 哈尔滨市东北汽车电子工程技术研究开发中心 Ice sensor adopting vibration tube principle
CN202368791U (en) * 2011-11-18 2012-08-08 武汉航空仪表有限责任公司 Bushing type icing sensitive vibration component

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4745804A (en) * 1986-12-08 1988-05-24 Dataproducts New England, Inc. Accretion type ice detector
CN2128729Y (en) * 1992-05-23 1993-03-24 王新平 Portable pachymeter
CN2160884Y (en) * 1993-03-04 1994-04-06 石油大学(华东) Magnetoelectric parallel type non-magnetic sensor for coating gaugemetre
CN1448689A (en) * 2003-05-13 2003-10-15 大连理工大学 Contact type automatic ice and snow depth measuring method
CN201697603U (en) * 2010-04-22 2011-01-05 哈尔滨市东北汽车电子工程技术研究开发中心 Ice sensor adopting vibration tube principle
CN202368791U (en) * 2011-11-18 2012-08-08 武汉航空仪表有限责任公司 Bushing type icing sensitive vibration component

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211082A (en) * 2018-09-14 2019-01-15 佛山市艾芯智能科技有限公司 A kind of detection method and detector of metal sheet thickness
CN109211082B (en) * 2018-09-14 2020-09-01 佛山市艾芯智能科技有限公司 Detection method and detector for thickness of metal sheet

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