Acoustic modem for fluid monitoring in medical and industrial applications
First Claim
1. A method for receiving information from a fluid container in fluid communication with a fluid conduit, the method comprising:
- receiving at a first device on or in the fluid container a first acoustic signal from a second device acoustically coupled to the fluid conduit;
transducing the received first acoustic signal into an electrical signal;
recognizing an acoustic activation signal in the transduced electrical signal;
transmitting from the first device a second acoustic signal into a fluid disposed within the fluid container and the fluid conduit in response to recognizing the acoustic activation signal;
receiving the second acoustic signal at the second device acoustically coupled to the fluid conduit; and
taking an action in the second device based on the received second acoustic signal.
1 Assignment
0 Petitions
Accused Products
Abstract
The various embodiments provide systems, devices, and methods which include an acoustic tag configured to transmit an acoustic signal through a contact medium that may be received by an acoustic modem, with the acoustic signal configured to transmit information. By modulating sound traveling through an acoustic connection between the fluid container and a pump, meter or valve, information such as an identifier of the fluid or container may be transmitted without risk of confusion with other fluid containers in the vicinity. In a medical embodiment, IV fluid and the IV drip tube provide a fluid and plastic acoustic connection to an IV pumping or metering device and an IV bag through which sound may be transmitted. The transmission of identification information through this physical connection may insure that the pumping or metering device only communicates with the IV bag coupled to the pump. Acoustic tags may be active or passive.
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Citations
64 Claims
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1. A method for receiving information from a fluid container in fluid communication with a fluid conduit, the method comprising:
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receiving at a first device on or in the fluid container a first acoustic signal from a second device acoustically coupled to the fluid conduit; transducing the received first acoustic signal into an electrical signal; recognizing an acoustic activation signal in the transduced electrical signal; transmitting from the first device a second acoustic signal into a fluid disposed within the fluid container and the fluid conduit in response to recognizing the acoustic activation signal; receiving the second acoustic signal at the second device acoustically coupled to the fluid conduit; and taking an action in the second device based on the received second acoustic signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for receiving information from a fluid container in fluid communication with a fluid conduit, the method comprising:
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transmitting from a first device an acoustic activation signal into a fluid disposed within the fluid container and the fluid conduit; receiving the acoustic activation signal in a second device positioned on or in the fluid container; transducing at the second device the acoustic activation signal into an electrical signal; recognizing at the second device the acoustic activation signal in the transduced electrical signal; transmitting a radio frequency (RF) signal from the second device to the first device in response to recognizing the acoustic activation signal, the RF signal encoding information; receiving the RF signal at the first device; decoding the information from the received RF signal; and taking an action in the first device based on the received RF signal.
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10. A method for receiving information from a fluid container in fluid communication with a fluid conduit, the method comprising:
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transmitting a first acoustic signal from a device acoustically coupled to the fluid conduit; reflecting the first acoustic signal into the fluid disposed within the fluid container in a manner that changes an attribute of the first acoustic signal thereby creating a second acoustic signal with harmonic properties different than the first acoustic signal; receiving the second acoustic signal at the device; and taking an action in the device based on the second acoustic signal. - View Dependent Claims (11, 12, 13)
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14. An acoustic tag configured to be attached to or positioned within a fluid container, the acoustic tag comprising:
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a power source; a controller coupled to the power source; a pulse generator coupled to the controller and configured to produce electrical pulses in response to signals from the controller; a first transducer coupled to the pulse generator, the first transducer configured to transmit an acoustic signal into a fluid disposed in the fluid container in response to electrical pulses produced by the pulse generator and to generate electrical signals in response to received acoustic signals; a signal modifying circuit configured to modify electrical signals received from the first transducer; an analog to digital converter coupled to the signal modifying circuit and to the controller and configured to convert modified electrical signals received from the signal modifying circuit into corresponding digital signals provided to the controller; and wherein the controller is configured with processor-executable instructions to perform operations comprising; recognizing an acoustic activation signal in digital signals received from the analog to digital converter; and activating the pulse generator to cause the first transducer to transmit the acoustic signal transmitted into the fluid disposed in the fluid container in response to recognizing an acoustic activation signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. An acoustic tag configured to be attached to a fluid container, the acoustic tag comprising:
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a power source; a controller coupled to the power source; a transducer configured to generate electrical signals in response to received acoustic signals; an signal modifying circuit configured to modify electrical signals received from the transducer and provide modified signals to the controller; an antenna; and a radio frequency (RF) transmitter coupled to the antenna and to the controller; wherein the controller is configured with processor-executable instructions to perform operations comprising; recognizing an activation signal in signals received from the analog to digital converter; and activating the RF transmitter to cause the antenna to transmit an RF signal from the acoustic tag in response to recognizing the activation signal. - View Dependent Claims (23)
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24. An apparatus, comprising:
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a first transducer configured to generate electrical signals in response to received acoustic signals; a controller; a signal modifying circuit configured to receive electrical signals from the first transducer and provide modified signals to the controller; wherein the controller is configured with processor-executable instructions to perform operations comprising; recognizing a first acoustic signal in the signals received from the signal modifying circuit; and directing a device to take an action in response to recognizing the first acoustic signal; a pulse generator coupled to the controller and configured to produce electrical pulses in response to signals from the controller; and a second transducer configured to transmit an acoustic activation signal into a fluid disposed in a fluid conduit in response to electrical pulses produced by the pulse generator. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A system for dispensing a fluid, comprising:
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a fluid container having a fluid disposed therein; a fluid dispenser device; a fluid conduit disposed between the fluid container and the fluid dispenser; and an acoustic tag, on or in the fluid container, comprising; a power source; a first controller coupled to the power source; a first pulse generator coupled to the first controller and configured to produce electrical pulses in response to signals from the first controller; a first transducer coupled to the first pulse generator, the first transducer configured to transmit a first acoustic signal into a fluid disposed in the fluid container in response to electrical pulses produced by the first pulse generator and to generate electrical signals in response to received acoustic signals, wherein the fluid dispenser device comprises; a second controller; a second transducer configured to receive acoustic signals from the fluid conduit and generate electrical signals in response to received acoustic signals; and a first signal modifying circuit configured to receive electrical signals from the second transducer and provide modified signals to the second controller, wherein the second controller is configured with processor-executable instructions to perform operations comprising; recognizing the first acoustic signal in the signals received from the first signal modifying circuit; and causing the fluid dispenser device to take an action in response to recognizing the first acoustic signal, the action taken selected from the group including dispensing fluid, not dispensing fluid, displaying an identity of the fluid, and sounding an alarm, wherein the acoustic tag further comprises a second signal modifying circuit configured to receive electrical signals from the first transducer and provide modified signals to the first controller, and wherein the first controller is configured with processor-executable instructions to perform operations further comprising; recognizing an acoustic activation signal in signals received from the second signal modifying circuit; and activating the first pulse generator to cause the first transducer to transmit the first acoustic signal into the fluid disposed in the fluid container in response to recognizing the acoustic activation signal, wherein the fluid dispenser device further comprises second pulse generator coupled to the second controller and configured to produce electrical pulses in response to signals from the second controller, and wherein the second transducer is further configured to transmit the acoustic activation signal into the fluid disposed in the fluid conduit in response to electrical pulses produced by the second pulse generator. - View Dependent Claims (31, 32, 33, 34)
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35. A system for dispensing a fluid, comprising:
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a fluid container having a fluid disposed therein; a fluid dispenser device; a fluid conduit disposed between the fluid container and the fluid dispenser; and an acoustic tag, on or in a fluid container, comprising; a power source; a first controller coupled to the power source; a first transducer configured to generate electrical signals in response to received acoustic signals; a first signal modifying circuit configured to modify electrical signals received from the first transducer and provide modified signals to the first controller; a first antenna; and a radio frequency (RF) transmitter coupled to the first antenna and to the first controller, wherein the first controller is configured with processor-executable instructions to perform operations comprising; recognizing an acoustic activation signal in signals received from the first signal modifying circuit; and activating the RF transmitter to cause the first antenna to transmit an RF signal from the acoustic tag in response to recognizing the acoustic activation signal; and wherein the fluid dispenser device comprises; a second controller; a first pulse generator coupled to the second controller and configured to produce electrical pulses in response to signals from the second controller; a second transducer configured to transmit the acoustic activation signal into the fluid disposed in the fluid conduit in response to electrical pulses produced by the first pulse generator; a second antenna; and a radio frequency (RF) receiver coupled to the second antenna and to the second controller, wherein the second controller is configured with processor-executable instructions to perform operations comprising; receiving the RF signal via the RF receiver; and causing the fluid dispenser device to take an action in response to recognizing the first acoustic signal, the action taken selected from the group including dispensing fluid, not dispensing fluid, displaying an identity of the fluid, and sounding an alarm. - View Dependent Claims (36)
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37. A system, comprising:
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means for receiving at a first device on or in the fluid container a first acoustic signal from a second device acoustically coupled to the fluid conduit; means for transducing at the first device the first acoustic signal into an electrical signal; means for recognizing at the first device an acoustic activation signal in the transduced electrical signal; means for transmitting from the first device a second acoustic signal into a fluid disposed within the fluid container and a fluid conduit in response to recognizing the acoustic activation signal; means for receiving the second acoustic signal at the second device acoustically coupled to the fluid conduit; and means for taking an action in the second device based on the received second acoustic signal. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. A system, comprising:
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means for transmitting from a first device an acoustic activation signal into a fluid disposed within a fluid container and a fluid conduit; means for receiving the acoustic activation signal in a second device positioned on or in the fluid container; means for transducing at the second device the acoustic activation signal into an electrical signal; means for recognizing at the second device an acoustic activation signal in the transduced electrical signal; means for transmitting an RF signal encoding information from the second device to the first device in response to recognizing the acoustic activation signal; means for receiving the RF signal at the first device; and means for taking an action in the first device based on the received RF signal.
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46. A system, comprising:
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a fluid container having a fluid disposed therein; a fluid conduit fluidically coupled to the fluid container; means for transmitting a first acoustic signal from a device acoustically coupled to the fluid within the fluid conduit; means for reflecting the first acoustic signal into the fluid disposed within the fluid container in a manner that changes an attribute of the first acoustic signal thereby creating a second acoustic signal with properties different from the first acoustic signal; means for receiving the second acoustic signal at the device; and means for taking an action based on the second acoustic signal. - View Dependent Claims (47, 48, 49)
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50. An acoustic tag configured to be attached to or positioned within a fluid container, the acoustic tag comprising:
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means for transducing an acoustic signal received from the fluid container into an electrical signal; means for recognizing an activation signal in the transduced electrical signal; and means for transmitting an acoustic signal into a fluid disposed in the fluid container in response to recognizing the activation signal. - View Dependent Claims (51, 52)
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53. An acoustic tag configured to be attached to or positioned within a fluid container, the acoustic tag comprising:
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means for transducing an acoustic signal received from the fluid container into an electrical signal; means for recognizing an acoustic activation signal in the transduced electrical signal; and means for transmitting a radio frequency (RF) signal in response to recognizing the acoustic activation signal. - View Dependent Claims (54)
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55. A non-transitory processor-readable medium having stored thereon processor-executable instructions configured to cause an acoustic tag processor to perform operations comprising:
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processing received signals to recognize an activation signal in the received signals; and transmitting an acoustic signal into a fluid disposed in the fluid container in response to recognizing the activation signal. - View Dependent Claims (56, 57, 58)
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59. A non-transitory processor-readable medium having stored thereon processor-executable instructions configured to cause an acoustic tag processor to perform operations comprising:
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transducing an acoustic activation signal received from the fluid medium into an electrical signal; recognizing the acoustic activation signal in the electrical signal; and transmitting a radio frequency (RF) signal in response to recognizing the acoustic activation signal.
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60. A method for receiving information from a fluid container, the method comprising:
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transmitting an acoustic signal into a fluid disposed within the fluid container; receiving a reflected acoustic signals from the fluid; and detecting a particular change in an attribute of the received reflected acoustic signal. - View Dependent Claims (61)
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62. An acoustic tag, comprising:
an acoustic reflector assembly configured to reflect a first acoustic signal into a fluid disposed within a fluid container in a manner that changes an attribute of the first acoustic signal thereby creating a second acoustic signal with acoustic properties recognizably different from the first acoustic signal. - View Dependent Claims (63, 64)
Specification