Feedback protection of pressure measurement devices
First Claim
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1. An apparatus for measuring a pressure of an environment, comprising:
- a pressure measuring device coupled to a first end portion of an elongated channel, the elongated channel having an exit aperture spaced apart from the pressure measuring device and coupled to the environment; and
an obstruction detection assembly, including;
a transmitter configured to transmit a transmission signal along the elongated channel;
a receiver configured to receive a reflection signal propagating back along the elongated channel; and
an obstruction detection module operatively coupled to the receiver and being configured to analyze the reflection signal to determine if an obstruction exists in the channel.
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Abstract
Systems and methods for feedback protection of pressure measurement devices are disclosed. In one embodiment, a transmitter inside a pressure measurement device transmits a transmission signal directly or indirectly toward an ambient opening of the pressure measurement device. A reflection of the transmission signal is then received at a receiver and data associated with the transmission signal and the reflection of the transmission signal are examined to determine if an obstruction exists in the pressure measurement device.
13 Citations
19 Claims
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1. An apparatus for measuring a pressure of an environment, comprising:
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a pressure measuring device coupled to a first end portion of an elongated channel, the elongated channel having an exit aperture spaced apart from the pressure measuring device and coupled to the environment; and an obstruction detection assembly, including; a transmitter configured to transmit a transmission signal along the elongated channel; a receiver configured to receive a reflection signal propagating back along the elongated channel; and an obstruction detection module operatively coupled to the receiver and being configured to analyze the reflection signal to determine if an obstruction exists in the channel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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transmitting a transmission signal from inside a pressure measurement device at an ambient opening of the pressure measurement device; receiving a reflection of the transmission signal; and using a processor to examine data associated with the transmission signal against data associated with the reflection of the transmission signal to determine if an obstruction exists in the pressure measurement device. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of feedback protection of a pitot static system comprising:
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transmitting a transmission signal from inside a pressure measurement device of the pitot static system, at an ambient opening of the pressure measurement device; receiving a reflection of the transmission signal within a tube of the pitot static system; and examining data associated with the transmission signal against data associated with the reflection of the transmission signal the tube of the pitot static system to determine if an obstruction exists in the pressure measurement device.
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17. A pressure measurement system comprising:
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a Pitot probe having an internal passageway that terminates at an ambient opening; a transmitter and receiver placed within and integrated with the Pitot probe for transmitting acoustic energy toward the ambient opening, detecting reflected energy, and generating a signal representing the detected energy; and a processor programmed to process the signal to provide feedback about any obstruction in the internal passageway and the ambient opening. - View Dependent Claims (18, 19)
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Specification