System for Remote Monitoring of Physiological Parameters of an Individual, Method and Computer Program Product Therefor

• US 20090203971A1
• Filed: 06/06/2006
• Published: 08/13/2009
• Est. Priority Date: 06/13/2005
• Status: Abandoned Application

• Current Assignee: Istituto Superiore Mario Boella Sulle Tecnologie Dell'Informazione e Delle Telecomunicazioni, Politecnico di Torino
• Original Assignee: Istituto Superiore Mario Boella Sulle Tecnologie Dell'Informazione e Delle Telecomunicazioni, Politecnico di Torino
• Inventors: Civera, Luigi, Sciarappa, Antonio, Bestente, Giovanni
• Application Number:
  US11/922,027
• Publication Number:
  US 20090203971A1
• Time in Patent Office: Days
• US Class Current: 600/301
• CPC Class Codes: G08B 21/0453 worn on the body to detect health condition by physiological monitoring, e.g. electrocardiogram, temperature, breathing detecting, measuring or recording for diagnostic purposes A61B5/00
• CPC Class Codes: G08B 25/007 Details of data content structure of message packets; data protocols
• CPC Class Codes: G08B 25/016 Personal emergency signalling and security systems emergency non-personal manually actuated alarm activators G08B25/12

Abstract

System for the remote monitoring of physiological parameters of individuals, that includes:

• • a mobile module (11) to detect physiological parameters, that can be associated to an individual, including one or more sensors (24, 25, 32, 33, 34) to detect said physiological parameters and a wireless transceiver module (26) configured at least to transmit data relating to said physiological parameters over a wireless link (14);
  • a base station (12) configured to exchange data and controls over said wireless link (14) with said mobile module (11) to detect physiological parameters;
  • a monitoring centre (13) located remotely and configured to exchange data on at least one communication network (15) with said base station (12).

The mobile module (11) to detect physiological parameters includes a microprocessor control module (30) configured to process the physiological parameters and, in function of the results of said processing of physiological parameters, to command said transmission module (26) to operate between at least two operating conditions including:

• • a first normal operating condition that comprises operating transmission at constant intervals of said data relating to physiological parameters;
  • a second emergency operating condition, commanded by said microprocessor control module (30) should the result of said processing of physiological parameters identify a condition of alarm, comprising a continuous communication phase with said base station (12).

Claims

1. System for the remote monitoring of physiological parameters of an individual, that includes:

at least one mobile module (11) to detect physiological parameters, that can be associated to at least one individual, including one or more sensors (24, 25, 32, 33, 34) to detect said physiological parameters and a wireless transceiver module (26) configured at least to transmit data relating to said physiological parameters over a wireless link (14);

at least one base station (12) configured to exchange data and controls over said wireless link (14) with said mobile module (11) to detect physiological parameters;

a monitoring centre (13) located remotely and configured to exchange data over at least one communication network (15) with said base station (12)

characterised in that

said mobile module (11) to detect physiological parameters includes a microprocessor control module (30) configured to process the physiological parameters and as a function of the results of said processing of the physiological parameters to command said transmission module (26) to operate between at least two operating conditions including;

a first normal operating condition that comprises operating the transmission of said data relating to physiological parameters at constant intervals;

a second emergency operating condition, commanded by said microprocessor control module (30) when the results of said processing of the physiological parameters identifies a condition of alarm, comprising a continuous communication phase with said base station (12).

2. System according to claim 1, characterised in that said at least one mobile module (11) and said at least one base station (12) are configured to co-operate according to a protocol for mobile telecommunications networks that includes a roaming management routine and a multi-user management routine.

3. System according to claim 1, characterised in that said mobile module (11) is configured to perform transceiver functions of the mobile type, said transceiver functions of the mobile type including one of more of the following operations:

search for the closest base station (12), in particular through channel access techniques of the combined FDMA and TDMA type;

open a connection over the wireless link (14);

transmit data packets, subdividing long packets;

manage signals acknowledging reception (ACK) and re-transmit non-received packets;

manage a transmission at higher bit-rate than a bit-rate in normal conditions to send information in emergency conditions;

close the connection on the wireless link (14).

4. System according to claim 1, characterised in that said base station (12) is configured to perform one or more of the following operations:

manage a signalling channel, in particular in TDMA or FDMA mode;

assign a communication channel on the wireless link;

exchange data with one of more mobile modules (11) associated to said base station (12);

release said communication channel;

manage a transmission at high bit-rate to send information in emergency conditions.

5. System according to claim 1, characterised in that in said first normal operating condition, said transmission at constant intervals entails placing said module (26) in a listening mode on a common signalling channel belonging to said wireless link (14) to await an identification signal (BS_ID) distinctive of the base station (12).

6. System according to claim 1, characterised in that said base station (12) is configured to manage a contention phase among a number of mobile modules (11).

7. System according to claim 6, characterised in that said contention phase includes an operation to discretise intervals to send a request signal (REQ), said discrete intervals being in particular regulated on the system'"'"'s maximum propagation round-trip time, that may occur in the system.

8. System according to claim 6, characterised in that said mobile module (11) is also configured such that, on reception of an acknowledge signal (ACK) from the base station (12), it commands said transceiver module (26) to operate in exclusive use on a frequency in said wireless link (14) communicated by said base station (12) and to send data within a guaranteed interval of time.

9. System according to claim 1, characterised in that said module (11) is configured, in said emergency operating condition, to activate said transceiver module (26) and to send, on reception of an identification signal from the base station (BS_ID) a request packet indicating the alarm, at a moment in time preceding to a minimum possible time to send the request (REQ) in the normal condition in order to guarantee that the request frame will surely win the contention phase.

10. System according to claim 9, characterised in that, in said emergency operating condition said base station (12) is configured to associate to itself the mobile module (11) in alarm and to start a polling phase in continuous communication of the data transmitted by said mobile module (11), in said polling phase said one or more sensors (24, 25, 32, 33, 34) of the mobile module (11) sampling the physiological parameters at a higher frequency compared to a frequency used in said normal operating condition.

11. System according to claim 10, characterised in that said polling phase in continuous communication is periodically suspended to enable the base station (12) to send on a common channel of the wireless link (14) a further signal identifying the base station (BS_ID) in order to detect the possible presence of other mobile modules (11) in emergency condition.

12. System according to claim 11, characterised in that it provides for the association to said further signal identifying the base station (BS_ID) of information relating to the presence of a mobile module (11) in emergency condition and that said mobile modules (11) are configured to increase the interval of time to place said mobile module (11) in listening mode on the common channel of the wireless link (14) awaiting an identification signal (BS_ID) distinctive of the base station (12) in order to limit power consumption.

13. System according to claim 10, characterised in that, during the polling phase, in order to maintain the mobility of the mobile modules (11) in alarm said roaming routine implements one or more of the following operations:

dissociate the mobile module (11) from the base station (12) if said mobile module (11) does not receive requests from said base station (12) within a time limit and send said request packet indicating the alarm to a base station (12) that makes itself available through the signal identifying the base station (BS_ID);

dissociate the base station (12) from the mobile module (11) if said base station (12) is unable to contact the mobile module (11) in alarm for a set number of attempts, halt the polling phase and send an alarm maintenance signal to the remote control centre (13).

14. System according to claim 1, characterised in that said one or more sensors (24, 25, 32, 33, 34) comprise one or more from among the following sensors:

an external temperature sensor (25);

a photodiode (24) to check the condition of the external environment;

a body temperature sensor (32);

a movement sensor (34), in particular a two-axis accelerometer;

a sensor to detect cardiac activity (33), in particular a piezoelectric sensor.

15. System according to claim 1, characterised in that said microprocessor control module (30) includes a module to make a pre-analysis of the data acquired by said one or more sensors (24, 25, 32, 33, 34) and a sampling module of said one or more sensors (24, 25, 32, 33, 34).

16. System according to claim 1, characterised in that said module (11) is configured in the form of a wearable wrist-watch.

17. System according to claim 1, characterised in that said control centre (14) is configured to process data transmitted by one or more base stations (12) and generate alarms or messages in one or more of the following cases:

if the mobile module (11) detects a sudden change in the acceleration value, followed by a period of inactivity that exceeds a certain threshold time, correlated to a slow decrease in skin temperature and heart rate;

if the module (11) detects an increase in skin temperature and heart rate for long periods;

if the module (11) detects an increased environmental temperature and decreased physical activity of the user;

if the mobile module (11) detects a stop in the heart beat and a decrease in skin temperature.

18. System according to claim 1, characterised in that it includes processing the cardiac activity signal by applying to a cardiac signal detected by the sensor (34) threshold detection techniques that involve placing at zero signal values detected by the sensor (34) below a prefixed threshold and/or spectral estimation techniques, in order to detect peaks corresponding to heart-beats.

19. System according to claim 1, characterised in that said module (11) includes a call button (28) that can be activated in case of need by the person to send a further alarm.

20. System according to claim 1, characterised in that said telecommunications network (15) is a telephone telecommunications network and/or of the Internet Protocol type.

21. Process for the remote monitoring of physiological parameters of individuals including the operations performed by the monitoring system according to claim 1.

22. Computer programme product directly loadable into the memory of an electronic digital computer and including software code portions to perform the steps of the process according to claim 21.

23. Computer programme product directly loadable into the memory of an electronic digital computer and including software code portions to perform the steps of the process according to the operations of the monitoring system according to claim 1 when the computer programme product is executed on a computer.