• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device for controlling a probe for measuring the pressure of a flow; the probe comprising an internal volume; the device comprising: • an acoustic transmitter and receiver, • connection means for connecting the device to the probe, for the transmitter to emit an acoustic signal in the internal volume and for the receiver to pick up an acoustic signal in the internal volume. The device also comprises an electronic module (54) comprising: an audio transmission and reception function (55), connected to the transmitter and the receiver by an analog link (57), a non-erasable memory comprising a key of digital encryption (58), • an erasable read only memory (59), • a digital communication interface (56), configured to transmit or receive digital signals between the outside of the device and the audio function (55), the non-volatile memory erasable and erasable ROM (59).
    公开号:FR3018359A1
    申请号:FR1400533
    申请日:2014-03-04
    公开日:2015-09-11
    发明作者:Francois Robert
    申请人:Thales SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to a device for controlling a probe for measuring the pressure of a flow, and more particularly to a device comprising an electronic module capable of communicating by a digital link with an external processing unit. The invention finds particular utility in the field of pressure probes implemented in the aeronautical field. The piloting of any aircraft requires knowing its relative speed with respect to the air, that is to say to the relative wind. This speed is determined using probes for measuring the static pressure Ps and the total pressure Pt. The total pressures Pt and static Ps provide the modulus of this velocity vector. In known manner, the measurement of the total pressure Pt can be performed using a so-called Pitot tube. It is an open tube at one end and obstructed at the other. The open end of the tube substantially faces the flow. The airstream located upstream of the tube is progressively slowed down to almost zero speed at the tube inlet. Slowing down the speed of this air stream increases its pressure. This increased pressure forms the total pressure Pt of the air flow.
    [0002] The principle of a probe for measuring total pressure is recalled in FIG. 1. The probe 10 is intended to be fixed through an opening 11 made in the skin 12 of an aircraft. The probe 10 comprises an outer portion 13 to the skin 12 and formed by a pitot tube 14 carried by a mat 15. The probe 10 also comprises an inner portion 16 essentially comprising an electrical connector 17 and a pneumatic connector 18. The connector 17 allows to electrically connect the probe 10 to the aircraft, for example to connect heating means for defrosting the probe 10. The connector 18 allows pneumatic connection of the pitot tube 14 to a pressure sensor or other measuring device located inside the skin 12 of the aircraft. The probe 10 is positioned on the skin 12 of the aircraft so that the pitot tube 14 is oriented substantially along a longitudinal axis of the aircraft, excluding the boundary layer, so that the direction of the flow, materialized by a arrow 19, substantially faces an inlet port 20 located at a first end 21 of the pitot tube 14. In the example shown, the pitot tube 14 is fixed relative to the skin 12 of the aircraft. It is of course possible to mount the pitot tube 14 on a mobile mat such as for example a pallet that can be oriented in the axis of the flow as for example described in the patent published under No. FR 2,665,539. In practice, the airflow can convey solid or liquid particles, such as cloud water, which can enter the pitot tube and accumulate in the tube at the obstructed end. . To prevent such accumulation from disturbing the pressure measurement, it is generally provided one or more purge holes and water traps, to avoid any risk of obstruction of the pipes responsible for transmitting the total pressure to the sensors. pressure located inside the skin of the aircraft or instruments of the dashboard of the aircraft. As shown in FIG. 2, the pitot tube 14 thus comprises, near an end 22, a bleed hole 23 making it possible to discharge particles capable of penetrating inside the tube 14. Again at the level of the 22 end of the tube, a pneumatic channel 24 opens into the tube 14 to form a pressure tap 40 at which one seeks to measure the air pressure. The pressure tap 40 is generally constructed to avoid the ingestion of water in the tube 14 and thus form a water trap. The channel 24 is for example connected to a pressure sensor not shown in FIG. 2. The pressure sensor 25 makes it possible effectively to measure the pressure of the air prevailing inside the tube 14 at its end 22. Apart from or the purge holes 23, whose sections are small relative to that of the tube 14, the tube is closed at its end 22. The pressure measured at this end therefore represents the total pressure Pt of the air flow. The purge holes make it possible to evacuate liquids and any particles that may enter the tube. The slowing of the air in the tube is not complete and the total pressure measurement Pt is altered. More specifically, the more we try to avoid the accumulation of water or large particles, the more we alter the measurement of total pressure by increasing the size or number of purge holes. Conversely, the more one seeks to improve the measurement of total pressure Pt by decreasing the size or the number of purge holes, the greater the risk of accumulation of water or particles increases. With a pitot tube, it is therefore necessary to make a compromise between the quality of the total pressure measurement Pt and the risk of disturbance of the measurement due to the penetration of water, and particles carried by the air flow. where the measurement is made. In the operational life of aircraft, purge holes can be polluted by ingestion of dust, insects, plant residues or other foreign matter. Because of their size and the position of the Pitot tubes on the fuselage of an aircraft, the periodic check of the integrity of the purge holes is difficult. Verification of Pitot tube bleed holes is usually done visually. The aircraft maintenance operator inspects the bleed hole (s) with a small lamp. If foreign objects are observed, the sensor is disassembled and its pneumatic circuits cleaned. This operation is all the more difficult as the aircraft is large. Access to the probe and purge holes generally less than 1 mm in diameter is difficult. The Applicant is also known to have a control device intended to be temporarily connected to the pressure measuring probe, and making it possible to control, using an acoustic transmitter and receiver, the non-obstruction of the internal cavities. and purge holes 25 of the probe. The principle of such a device is described in particular by the patent published under the reference FR 2 959 822. It is also recalled in Figure 2 of the present application. The control device 25 comprises a transmitter 26 and a receiver 27 to be connected to an internal volume 30 of the probe, formed by the inside of the tube 14, the bleed hole (s) 23 and the channel 24. transmitter transmits an acoustic signal propagating in the internal volume 30 and the receiver is configured to receive an acoustic signal observed in the internal volume 30. The device also comprises processing means 28 making it possible to compare the acoustic signal observed in the internal volume with a reference acoustic signal measured on a non-fouled probe, for the purpose of establishing the presence of particles in the internal volume. As shown in FIG. 2, the processing means 28 are integrated in the control device of the probe. When the difference between the observed signal and the reference signal exceeds a predefined threshold, the processing means alert the user, for example by means of an indicator 29 mounted on the device. This approach, however, has limitations. In fact, in order to improve the reliability of the diagnosis of fouling of the probe, more complex processing algorithms are envisaged than simply comparing a signal deviation with a threshold. These more complex algorithms may in particular require various interactions with an operator. The integration of the processing means in the device connected to the probe mounted on the fuselage of the aircraft makes it difficult these interactions between the operator and the device. It is therefore desirable to have equipment for controlling a pressure measuring probe in a reliable, secure and simple manner for a maintenance operator present near the aircraft equipped with the probe to be tested. For this purpose, the subject of the invention is a device for controlling a flow measurement probe; the probe comprising an internal volume and at least one communication orifice with the outside of the volume; the device comprising: - an acoustic transmitter and receiver, - connection means for connecting the device to the probe, so that the transmitter emits an acoustic signal propagating in the internal volume and so that that the receiver picks up an acoustic signal observed in the internal volume. The device further comprises an electronic module comprising: an audio transmission and reception function, connected to the transmitter and to the receiver by an analog link, a non-erasable memory comprising a digital encryption key, an erasable read only memory a digital communication interface, configured to transmit or receive digital signals between the exterior of the device and the audio function, the non-erasable memory and the erasable ROM.
    [0003] Advantageously, the electronic module further comprises a sensor capable of measuring a temperature near the transmitter; the digital communication interface is configured to transmit the temperature measured by the sensor to the outside of the device.
    [0004] Advantageously, the audio function has a sampling frequency greater than or equal to 22 kHz. Advantageously, the digital communication interface is a USB port. Advantageously, the device is intended to carry out the control of a total pressure, static pressure, Pitot / static or totally or partially pneumatic impact probe.
    [0005] The invention also relates to a control equipment for a flow pressure measurement probe, comprising: a control device having the characteristics described above, a processing unit comprising a digital communication interface, digital link means between the digital communication interfaces of the control device and the processing unit.
    [0006] Advantageously, the processing unit is a computer, a tablet or a smartphone. Advantageously, the digital communication interfaces are two USB ports, and the digital link means are a USB cable.
    [0007] In an advantageous implementation, the processing unit comprises means for: controlling, via the audio function, the emission of an acoustic signal propagating in the internal volume of the probe; receiving and analyzing an acoustic signal observed in the internal volume, picked up by the receiver and transmitted by the audio function. Advantageously, the processing unit further comprises means for receiving and analyzing the temperature measured by the sensor. Advantageously, the processing unit further comprises means for receiving and analyzing the encryption key stored in the device, and allowing the analysis of the acoustic signal transmitted by the audio function. Advantageously, the processing unit further comprises means for delivering a diagnostic operation of the pressure measuring probe, based on the analysis of the acoustic signal transmitted by the audio function. The invention will be better understood and other advantages will become apparent upon reading the detailed description of the embodiments given by way of example in the following figures. FIG. 1, already presented, shows a probe for measuring total pressure according to the state of the art, FIG. 2, already presented, represents a partial view of the probe of FIG. 1, in the vicinity of which is disposed a 3. The control device according to the state of the art, Figure 3 shows a control equipment of a pressure sensor. For the sake of clarity, the same elements bear the same references in the different figures. The general idea of the present invention is to distribute the processing means between the control device and an external processing unit. The control device is intended to be temporarily connected to a pressure measurement probe during an aircraft maintenance operation. The processing unit comprises means for exchanging information with the device, means for exchanging information with a maintenance operator, and software for controlling the control operation of the probe, by analyzing the information received from the operator. device and the operator, in order to diagnose and report any fouling of the probe. The invention relates both to the control device as such, and to the equipment formed by this device and the processing unit. In the following, the invention is described in relation to a total pressure measurement probe, similar to that described above in FIG. 1. It is of course possible to implement it for a static pressure measuring probe, for a pitot / static probe or for a totally or partially pneumatic incidence probe. In general, the device according to the invention is intended for controlling a probe comprising an internal volume and at least one orifice communicating with the outside of the volume. In the case of the total pressure probe previously described, the internal volume of the probe comprises the inside of the pitot tube 14, the bleed hole or holes 23 and the channel 24, for example connected to a pressure sensor. In a widespread architecture, the probe comprises two purge holes arranged opposite one another in the Pitot tube. FIG. 3 represents an equipment for controlling a pressure measuring probe according to the invention. The control equipment 50 comprises a control device 51 and a processing unit 52 that can be interconnected by a link 53. The control device 51 comprises elements common to the device described in the preamble and shown in FIG. 2. The control device 50 comprises in particular: an acoustic transmitter 26 and an acoustic receiver 27, connection means (not shown in FIG. 3) intended to connect the device 50 to the probe 10, so that the Transmitter 26 emits an acoustic signal propagating in the internal volume 30 of the probe and in such a way that the receiver 27 picks up an acoustic signal observed in this internal volume 30. The control device 50 also comprises an electronic module 54 in which which is implemented an audio transmission and reception function 55, connected to the transmitter 26 and to the receiver 27 via an analog link 57. The electro module Figure 54 is provided with an interface 56 configured to transmit or receive digital signals between the exterior of the device and the audio function. In the manner of a sound card, the audio function 55 is made by means of an audio control electronics, configured to: receive a digital signal from the interface 56, transform this digital signal into an analog signal, and transmit this signal analog to the transmitter 26 by the analog link 57, receive an analog signal from the receiver 27 by the analog link 57, transform this analog signal into a digital signal, and transmit this digital signal to the interface 56. The device 51 can be connected to the processing unit 52 by the digital link 53, for example USB type, for the acronym Universal Serial Bus, and through digital communication interfaces, for example USB ports, the device and the unit treatment.
    [0008] The processing unit comprises a human-machine interface, or HMI, for displaying information to a maintenance operator and in return for receiving instructions from it for the control of the maintenance operation. In the processing unit is implemented the software for controlling the control operation of the probe, and in particular the diagnosis of a possible fouling of the probe. Thus, the processing unit comprises means for: - receiving and analyzing instructions from a maintenance operator, - controlling the device for controlling the probe, and in particular controlling, via the audio function, the transmitting an acoustic signal propagating in the internal volume of the probe, receiving and analyzing an acoustic signal observed in the internal volume, picked up by the receiver and transmitted by the audio function, signaling to the maintenance operator a fouling of the probe.
    [0009] This particular configuration distributing the control and processing means between the device connected to the probe and the processing unit handled by the operator has many advantages. The processing unit implemented is generic, it is for example a computer, a tablet or a smartphone (or "smartphone" in English terminology). The processing unit can thus be used for other purposes than the probe control operation. Various applications use PC or tablet computer-type processing units equipped with a USB port during maintenance operations of an aircraft. These devices can be used for the control operation, after installation of a software dedicated to the control device. The cost of the device is therefore significantly reduced. Note that the processing units, such as a PC for example laptop, or a tablet or a smartphone ("smartphone" in the English terminology), are generally equipped with a sound card, similar to the audio function, and capable of managing a microphone and a speaker or a speaker. However, these sound cards usually include input filters, known by the English terminology AGC for Automatic Gain Control, specific to each model of computer or tablet. The response acquired by the audio function is therefore variable according to the models. This dispersion makes the analysis of the acoustic signal by means of the sound card of the treatment unit particularly delicate, and the accuracy of a diagnosis of fouling limited. In addition, the use of an audio function implemented in the processing unit involves connecting by an analog link the device connected to the probe mounted on the fuselage of the aircraft, to the processing unit manipulated by the operator on the tarmac. This solution involves a significant length of cable, and therefore additional noise recovered on the cable providing the analog link which also degrades the accuracy of the diagnosis of fouling.
    [0010] Note also that the choice of a USB connection between the device and the processing unit also has advantages. The electronic module of the device is powered electrically only through the USB port. It is not necessary to connect the device to a power source, limiting the number of cables required. The alternative solution implementing a wireless link, for example according to the Wi-Fi protocol, frees itself from the physical link to exchange with the processing unit but requires a power supply. The electromagnetic field generated by the Wi-Fi solution also represents a disturbance that is to be avoided in the immediate environment of the aircraft.35 Thus, the product consists of a control device and a right to control. use, by means of software hosted by any processing unit. The product manufactured and offered for sale relates to the value-added components (control device, software), and uses solutions that are available and widely used for the other constituents (computer, tablet). The control device which integrates a digital part ensuring the generation and reception of analog signals and their conversion into digital remains copiable. To secure the simultaneous use of the two components of the equipment, i.e. the device and the software, this includes means for preventing the use of the software with a non-conforming control device. Thus, the device comprises a non-erasable memory, commonly called ROM for the acronym Read-Only Memory, comprising a digital encryption key 58. The software 15 implemented in the processing unit comprises means for receiving and analyzing the key. digital encryption 58, so as to recognize the device connected to the processing unit and if necessary allow the use of the software, or more specifically means for analyzing the acoustic signal transmitted by the device and warning of fouling of the probe. In other words, the processing unit comprises means for authenticating the device connected to the processing unit, based on a reading of the digital encryption key. The control device also comprises an electrically erasable and programmable read-only memory 59, commonly known as EEPROM for the acronym Electrically Erasable Programmable Read Only Memory, allowing data to be saved in the control device, such as the technical characteristics of the sleeve, a history of use, a right of use, or a date of next maintenance of the device. The data saved in the device's read-only memory is accessible to the processing unit. The processing unit may also write information to the ROM. In a preferred embodiment of the invention, the device also comprises a temperature sensor 60, configured to measure a temperature in the vicinity of the transmitter 26. The temperature sensor 60 is connected to the digital communication interface 56 of the device. The digital communication interface is configured to transmit the temperature measured by the sensor to the outside of the device. It is interesting to know the temperature in the environment of the acoustic transmitter. The characteristics of the loudspeaker are impacted by the temperature; the behavior of the speaker diaphragm being dependent on the temperature. To improve the accuracy of the sensor fouling diagnosis, the algorithms for processing the acoustic signal observed in the internal volume take into account, for example in the form of a correction curve, temperature variations. In other words, the processing unit further comprises means for receiving and analyzing the temperature measured by the sensor. In summary, the invention relates to equipment comprising on the one hand a control device intended to be connected to the pressure sensor mounted on the fuselage of an aircraft, and on the other hand a handling unit handled. by a maintenance operator positioned near the aircraft. The control device comprises an audio part, typically comprising a loudspeaker (generally associated with an amplifier for generating the necessary power) and a microphone (generally associated with a preamplifier before sampling) and an electronic module responsible in particular for providing digital conversion of the analog signals of the audio part. The processing unit on its side includes an HMI for dialogue with the operator. It also includes software capable of digitally exchanging information and commands with the device. To secure the simultaneous use of the software and the control device, a digital encryption key is stored permanently on a non-erasable memory of the electronic module. The software is then configured to authenticate the device connected to the processing unit by comparing the encryption key stored in the device with an encryption key known to the software. A read-only memory also makes it possible to store in the device various information specific to the device and its history.
    [0011] The invention therefore relates to the device comprising the audio part and the electronic module. It also relates to the equipment formed by the device and the processing unit hosting a processing software adapted to the device. The software comprises a set of means for processing the digital signals transmitted by the device. In a particular commercial form, the software intended to be installed on any processing unit is stored on a computer medium such as a CD-ROM or a USB key. The invention then relates to the equipment comprising the device and the computer medium comprising code instructions forming the digital signal processing means transmitted by the device.
    权利要求:
    Claims (12)
    [0001]
    REVENDICATIONS1. Device for controlling a probe for measuring the pressure of a flow; the probe comprising an internal volume (30) and at least one orifice (20, 33) communicating with the outside of the volume (30); the device comprising: - an acoustic transmitter (26) and a receiver (27), - connection means for connecting the device to the probe (10), so that the transmitter (26) emits a signal acoustic signal propagating in the internal volume (30) and so that the receiver 10 (27) picks up an acoustic signal observed in the internal volume (30), characterized in that it further comprises an electronic module (54) comprising: - an audio transmission and reception function (55), connected to the transmitter (26) and to the receiver (27) via an analog link (57), - a non-erasable memory (ROM) comprising a key of digital encryption (58), - an erasable read only memory (59), - a digital communication interface (56), configured to transmit or receive digital signals between the outside of the device and the audio function (55), the memory non-erasable and erasable ROM (59).
    [0002]
    The apparatus of claim 1, wherein the electronic module (54) further comprises a sensor (60) capable of measuring a temperature near the emitter (26); the digital communication interface (56) being configured to transmit the temperature measured by the sensor (60) to the outside of the device.
    [0003]
    3. Device according to claim 1 or 2, whose audio function (55) 30 has a sampling frequency greater than or equal to 22 kHz.
    [0004]
    4. Device according to one of the preceding claims, wherein the digital communication interface (56) is a USB port.
    [0005]
    5. Device according to one of the preceding claims, characterized in that it is intended to achieve the control of a total pressure sensor (10), static pressure, Pitot / static or totally or partially pneumatic impact .
    [0006]
    6. Equipment for controlling a flow pressure measurement probe, characterized in that it comprises: - a control device (54) according to one of claims 1 to 5, - a processing unit ( 52) comprising a digital communication interface; - digital link means (53) between the digital communication interfaces of the control device (54) and the processing unit (52).
    [0007]
    7. Equipment according to claim 6, wherein the processing unit (52) is a computer, a tablet or a smartphone.
    [0008]
    8. Equipment according to one of claims 6 or 7, whose digital communication interfaces are two USB ports, and whose digital link means (53) are a USB cable.
    [0009]
    9. Equipment according to one of claims 6 to 8, the processing unit (52) comprises means for: - controlling via the audio function (55), the emission of an acoustic signal propagating in the internal volume (30) of the probe, - receiving and analyzing an acoustic signal observed in the internal volume (30), picked up by the receiver (27) and transmitted by the audio function (55). 30
    [0010]
    10. Equipment according to claim 9, comprising a device according to claim 2, and the processing unit (52) further comprises means for receiving and analyzing the temperature measured by the sensor (60). 35
    [0011]
    11. Equipment according to one of claims 9 or 10, the processing unit further comprises means for receiving and analyzing the key decryption (58) stored in the device (51), and allow the analysis of the acoustic signal transmitted by the audio function (55).
    [0012]
    12. Equipment according to one of claims 9 to 11, the processing unit (52) further comprises means for delivering a diagnostic operation of the pressure measuring probe, based on the analysis of the acoustic signal. transmitted by the audio function (55).
    类似技术:
    公开号 | 公开日 | 专利标题
    FR3018359A1|2015-09-11|DEVICE FOR MONITORING A PRESSURE MEASURING PROBE OF A FLOW
    EP2385377B1|2013-11-27|Device for controlling a probe for measuring the pressure of a flow and probe including the device
    CA2622216C|2015-07-21|System for monitoring anemobaroclinometric parameters for aircraft
    FR3035209A1|2016-10-21|MULTIFUNCTION PROBE FOR PRIMARY REFERENCES FOR AIRCRAFT, MEASUREMENT SYSTEM, AIRCRAFT AND METHOD FOR OBTAINING PHYSICAL SIZES
    FR2988480A1|2013-09-27|IMPACT PROBE BLOCK DETECTION SYSTEM FOR AN AIRCRAFT.
    FR2993976A1|2014-01-31|SYSTEM FOR ESTIMATING INDIVIDUAL WATER CONSUMPTION
    EP3032553A1|2016-06-15|Diagnostic device for immersed electrical transformer and electrical transformer comprising such a device
    EP3304022B1|2021-11-03|Pressure-measuring device with improved reliability and associated calibration method
    EP1277034A1|2003-01-22|Method and installation for detecting and locating a source of noises and vibrations
    EP2310815B1|2015-01-21|Acoustic impedance sensor designed to measure the input acoustic impedance of a waveguide
    EP2878959B1|2016-09-21|Device and method for controlling a probe for measuring the pressure of a flow
    EP2878960B1|2016-07-27|Device for controlling a probe for measuring the pressure of a flow
    EP2878961B1|2016-07-06|Method for controlling a probe for measuring the pressure of a flow
    EP3182287A1|2017-06-21|A method and a system for monitoring the reliability of at least one piece of electronic equipment installed in an aircraft
    EP3781952A1|2021-02-24|Ultrasonic anemometer
    FR2932881A1|2009-12-25|METHOD OF DETECTING FAILURE OF AN ANALOGUE SENSOR AND DETECTION DEVICE FOR CARRYING OUT SAID METHOD
    FR3051442A1|2017-11-24|ONBOARD SYSTEM FOR EVALUATING THE SEVERITY OF A CROSSING
    EP3771649B1|2022-01-19|System for evaluating the clogging of a filter equipping an aircraft, aircraft comprising such an evaluation system and associated method
    EP3336510A1|2018-06-20|A method of analyzing variations of at least one indicator of the behavior of a mechanism fitted to an aircraft
    FR3022671A1|2015-12-25|METHOD FOR DETECTION BY A TERMINAL OF A PRESENCE SIGNAL, SYSTEM AND DEVICE THEREFOR
    FR3081049A1|2019-11-15|PIEZOELECTRIC FLOWMETER
    FR3000793A1|2014-07-11|METER DISPLAY DEVICE AND METHOD
    FR3002517A1|2014-08-29|Assembly for analyzing air penetrating in e.g. plane, has pipe with upstream end connected to air conditioner and downstream end connected to aircraft, and acquisition system acquiring physical data relating to air penetrating in aircraft
    FR2724226A1|1996-03-08|Fluid flow discharge measurement device esp. for air discharged from pipe
    FR2885420A1|2006-11-10|Precipitation or hydrometeor e.g. snow, measuring method for e.g. desert, involves retransmitting sound by remote microphones and receiving sound at place of original transmission of sound to measure spatial distribution of precipitations
    同族专利:
    公开号 | 公开日
    FR3018359B1|2016-04-15|
    US9574963B2|2017-02-21|
    US20150308913A1|2015-10-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2000062081A1|1999-04-08|2000-10-19|Interactive Technologies, Inc.|Flow condition detector for a fluid flow system|
    US20070280046A1|2006-05-31|2007-12-06|The Boeing Company|Feedback protection of pressure measurement devices|
    EP2015082A2|2007-06-18|2009-01-14|General Electric Company|Anemometer calibration method and wind turbine|
    FR2959822A1|2010-05-07|2011-11-11|Thales Sa|DEVICE FOR MONITORING A PRESSURE MEASURING PROBE OF A FLOW AND PROBE COMPRISING THE DEVICE|
    US20110283766A1|2010-05-24|2011-11-24|Cummings David S|Apparatus and Calibration Method for Cup Anemometers having Non-Removable Cupsets|
    US20130204544A1|2012-02-03|2013-08-08|Gulfstream Aerospace Corporation|Methods and systems for determining airspeed of an aircraft|CN105841876A|2016-05-06|2016-08-10|上海燃气浦东销售有限公司|Pressure regulator pressure automatic monitoring handheld equipment|US3788140A|1972-02-25|1974-01-29|Gen Signal Corp|Electroacoustical flow metering apparatus|
    US4227407A|1978-11-30|1980-10-14|Cornell Research Foundation, Inc.|Volume flow measurement system|
    US4928534A|1986-07-10|1990-05-29|Kaijo Denki Co. Ltd.|Socket structure for mounting ultrasonic gas flow measuring device with respect to gas flow pipe|
    FR2665539B1|1990-08-03|1992-11-27|Sextant Avionique|AIRCRAFT PROBE FOR MEASURING AERODYNAMIC PARAMETERS OF AMBIENT FLOW.|
    AUPN606095A0|1995-10-19|1995-11-09|AGL Consultancy Pty. Limited|Digital speed determination in ultrasonic flow measurements|
    US6178827B1|1999-04-22|2001-01-30|Murray F. Feller|Ultrasonic flow sensor|
    US7591165B2|2006-03-29|2009-09-22|Tekscan Incorporated|Control circuit for sensor array and related methods|
    US20080236297A1|2007-01-23|2008-10-02|Geoff Van Fleet|Acoustically compatible insert for an ultrasonic probe|
    FR3014204B1|2013-11-29|2015-12-25|Thales Sa|DEVICE FOR MONITORING A PRESSURE MEASURING PROBE OF A FLOW|US10048103B2|2016-09-23|2018-08-14|Bell Helicopter Textron Inc.|Adjustable position pitot probe mount|
    DE102017205838A1|2017-04-05|2018-10-11|Robert Bosch Gmbh|Sensor element for detecting at least one property of a fluid medium|
    US10323997B2|2017-07-03|2019-06-18|The Boeing Company|Systems and methods for correcting acoustic error in pressure sensors|
    法律状态:
    2015-03-09| PLFP| Fee payment|Year of fee payment: 2 |
    2016-02-23| PLFP| Fee payment|Year of fee payment: 3 |
    2017-02-27| PLFP| Fee payment|Year of fee payment: 4 |
    2018-02-27| PLFP| Fee payment|Year of fee payment: 5 |
    2020-02-27| PLFP| Fee payment|Year of fee payment: 7 |
    2021-02-25| PLFP| Fee payment|Year of fee payment: 8 |
    2022-02-21| PLFP| Fee payment|Year of fee payment: 9 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1400533A|FR3018359B1|2014-03-04|2014-03-04|DEVICE FOR MONITORING A PRESSURE MEASURING PROBE OF A FLOW|FR1400533A| FR3018359B1|2014-03-04|2014-03-04|DEVICE FOR MONITORING A PRESSURE MEASURING PROBE OF A FLOW|
    US14/638,623| US9574963B2|2014-03-04|2015-03-04|Device for monitoring a probe for measuring the pressure of a flow|
    [返回顶部]