System, device, and method for coupled hub and sensor node on-body acquisition of sensor information

• US 10,673,280 B2
• Filed: 02/21/2017
• Issued: 06/02/2020
• Est. Priority Date: 02/22/2016
• Status: Active Grant

• Current Assignee: Medidata Solutions Incorporated (Dassault Systemes SA)
• Original Assignee: MC10, Inc.
• Inventors: Raj, Milan, McGrane, Bryan, Fuchs, Donald
• Primary Examiner(s): Nwugo, Ojiako K
• Application Number:
  US15/437,967
• Publication Number:
  US 20170244285A1
• Time in Patent Office: 1,197 Days
• Field of Search: 34087031, 34084031
• CPC Class Codes: A61B 5/0024 for multiple sensor units attached to the patient, e.g. using a body or personal area network
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04Q 2209/43 using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee
• CPC Class Codes: H04Q 2209/88 Providing power supply at the sub-station
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

An on-body sensor system includes a hub configured to be attached to a surface of a user. The hub being further configured to transmit electrical power and data signals into the surface and to receive response data signals from the surface. The system further including at least one sensor node configured to be attached to the surface or just below the skin. The system further including at least one sensor node being further configured to receive the electrical power and data signals from the hub through the surface and to transmit the response data signals into the surface. The electrical power from the hub powers the at least one sensor node and causes the at least one sensor node to generate sensor information that is transmitted back to the hub within the response data signals.

Claims

1. An interchangeable sensor system comprising:

a hub configured to be attached to a body of a user and to be selectively coupled to one or more sensor nodes, the hub being further configured to transmit electrical power and operational data wirelessly to the one or more sensor nodes; and

at least one sensor node configured to be attached to the body of the user and configured to be selectively coupled to the hub and to receive the electrical power and the operational data wirelessly, the at least one sensor node including at least one sensor configured to generate sensor data responsive to the electrical power transmitted from the hub, the at least one sensor node being further configured to transmit the sensor data wirelessly to the hub for processing, aggregation, and/or transmission to an off-body computer device{circumflex over ( 

)} wherein the at least one sensor node is a plurality of sensor nodes, each sensor node of the plurality of sensor nodes including an application-specific sensor having a different sensing modality among the plurality of application-specific sensors, and the hub is configured to be selectively coupled to the sensor nodes of the plurality of sensor nodes one at a time.

2. The system of claim 1, wherein the hub includes a hub coil configured to transmit the electrical power and the operational data wirelessly, and the at least one sensor node includes a sensor node coil configured to receive the electrical power and the operational data and to transmit the sensor data.

3. The system of claim 2, wherein the hub and the at least one sensor are configured such that the hub coil and the sensor node coil are co-located when the at least one sensor node is coupled to the hub.

4. The system of claim 3, wherein the hub coil and sensor node coil are concentric when the at least one sensor node is coupled to the hub.

5. The system of claim 1, wherein the hub further includes a power source, and all electrical power required by the at least one sensor node for generating the sensor data is provided by the power source through the hub coil.

6. The system of claim 5, wherein the electrical power is transferred from the hub coil to the sensor node coil by induction.

7. The system of claim 6, wherein the hub further includes an inductive charging circuit configured to charge the power source based on an external power source by induction through the hub coil.

8. The system of claim 1, wherein the processor is configured to demodulate the electrical power to obtain the operational data.

9. The system of claim 1, wherein the hub includes memory configured to aggregate the sensor data from the at least one sensor node.

10. The system of claim 1, wherein the hub includes a processor, and the processor is configured to execute one or more application-specific algorithms based on the at least one sensor node currently coupled to the hub.

11. A method of acquiring sensor information, the method comprising:

transmitting, by a hub, electrical power and operational data to at least one sensor node, the at least one sensor node being coupled to the hub, and the hub and the at least one sensor node being attached to a body of a user;

receiving, by the at least one sensor node, the electrical power and the operational data transmitted by the hub;

generating, by at least one sensor of the at least one senor node, sensor information associated with the body;

transmitting, by the at least one sensor node, the sensor information to the hub; and

aggregating, processing, and/or analyzing, by the hub, the sensor information received from the at least one sensor node, wherein the electrical power, the operational data, or a combination thereof are transmitted to the at least one sensor node continuously, periodically, or semi-periodically by the hub for acquiring the sensor information associated with the body, wherein only the electrical power is transmitted to the at least one sensor node continuously with the at least one sensor node coupled to the hub;

recording, by the at least one sensor node, the sensor information in on-board memory prior to transmitting the sensor information to the hub; and

executing, by the at least one sensor node, one or more location-specific algorithms based on the electrical power, the operational data, or a combination thereof to process and/or analyze the sensor information prior to transmitting the sensor information to the hub.

12. The method of claim 11, wherein the electrical power and the operational data are transmitted to the at least one sensor node continuously with the at least one sensor node coupled to the hub.

13. The method of claim 11, wherein only the operational data is transmitted to the at least one sensor node continuously with the at least one sensor node coupled to the hub.

14. The method of claim 11, wherein the hub includes a hub coil and the at least one sensor node includes a senor node coil.

15. The system of claim 14, wherein the hub and the at least one sensor node are configured such that the hub coil and the sensor node coil are co-located when the at least one sensor node is coupled to the hub.

16. The system of claim 15, wherein the hub coil and the sensor node coil are concentric when the at least one sensor node is coupled to the hub.

17. The method of claim 14, wherein the electrical power and the operational data are communicated to the at least one sensor node based on near field communication protocols.

18. The method of claim 11, further comprising:

modulating, by the hub, the electrical power with the operational data prior to transmitting the electrical power and the operational data; and

demodulating, by the at least one sensor node, the operational data from the electrical power to extract the operational data.

19. The method of claim 11, further comprising:

transmitting, by the hub, the sensor information to an off-body computer device after aggregating, processing, and/or analyzing the sensor information by the hub.

20. A method of acquiring sensor information, the method comprising:

modulating, by a hub, electrical power with operational data prior to transmitting the electrical power and the operational data;

transmitting, by the hub, the electrical power and the operational data to at least one sensor node, the at least one sensor node being coupled to the hub, and the hub and the at least one sensor node being attached to a body of a user;

receiving, by the at least one sensor node, the electrical power and the operational data transmitted by the hub;

demodulating, by the at least one sensor node, the operational data from the electrical power to extract the operational data;

generating, by at least one sensor of the at least one senor node, sensor information associated with the body;

transmitting, by the at least one sensor node, the sensor information to the hub; and

aggregating, processing, and/or analyzing, by the hub, the sensor information received from the at least one sensor node,

wherein the electrical power, the operational data, or a combination thereof are transmitted to the at least one sensor node continuously, periodically, or semi-periodically by the hub for acquiring the sensor information associated with the body.

21. The method of claim 20, further comprising:

transmitting, by the hub, the sensor information to an off-body computer device after aggregating, processing, and/or analyzing the sensor information by the hub.