Temperature measurement device and system for determining a deep internal temperature of a human being
A measurement device may be wound around the arm of a wearer. The measurement device includes: —on a first, internal, face at least three skin temperature sensors extending over at least one portion of a peripheral line of the measurement device, in a first zone (Z 33 ) of the device; —on a second, external, face, in a second zone (Z 34 ) of the device, at least one cavitary temperature sensor for measuring a temperature in or close to the armpit. Zones (Z 33 , Z 34 ) are arranged at least partly opposite one another or are substantially adjacent.
1 . A measurement device for measuring a plurality of temperatures with an aim of determining a core internal temperature of a human being wearing said measurement device, the measurement device comprising: a first face and a second face opposite the first face and being configured to be able to be in a worn configuration in which the measurement device is at least partially wound over itself and forms at least one cylindrical portion having an axis (Z); the first face being turned towards the axis (Z); the measurement device, in the worn configuration, being intended to at least partially encircle an arm of the human being wearing said measurement device, in a vicinity of a corresponding armpit of the body of the human being, so that the axis (Z) of the measurement device is substantially merged with an axis of said arm; the first face of the measurement device then being in contact with a skin of the arm of the human being;
at least three skin temperature sensors configured to measure a skin temperature of the human being, the skin temperature sensors being positioned on the first face of the measurement device, in a first zone of the measurement device, and extending substantially over at least part of a peripheral line of the measurement device in the worn configuration;
at least one cavity temperature sensor configured to measure a temperature in said armpit of the human being, the cavity temperature sensor being arranged on the second face of the measurement device, in a second zone of the measurement device, said at least one cavity temperature sensor being linearly displaced from said at least three skin temperature sensors and physically connected to said skin temperature sensors by said measurement device; and
said first zone of the skin temperature sensors and said second zone of the at least one cavity temperature sensor being arranged at least partly facing each other or being substantially adjacent, projecting in a plane orthogonal to said first and second faces; the measurement device being configured to be able to be in an unworn configuration in which the measurement device is flat;
the measurement device also comprising at least one proximal temperature sensor configured to measure a surrounding temperature in an immediate vicinity of the arm of the human being, the proximal temperature sensor being arranged on or near the second face of the device, said at least one proximal temperature sensor being linearly displaced from said at least three skin temperature sensors and physically connected to said skin temperature sensors by said measurement device; and
the measurement device being in the form of an elongated band having, in the unworn configuration, a distance on said device between a skin temperature sensor and the at least one proximal temperature sensor greater than 10 cm.
2 . The measurement device according to claim 1 , characterized in that the number of at least one cavity temperature sensor is less than the number of skin temperature sensors.
3 . The measurement device according to claim 1 , characterized in that:
the first face of the measurement device is arranged to be in direct contact with the skin of the arm of the human being without an intermediate layer between the first face and the skin of the arm of the human being, and the at least three skin temperature sensors are situated on this first face, wherein the at least three skin temperature sensors are oriented towards an exterior of the device, and
the second face of the measurement device is arranged to be in direct contact with the armpit of the human being without an intermediate layer between the second face and the armpit of the human being, and the at least one cavity temperature sensor is situated on the second face, wherein the at least one cavity temperature sensor is oriented towards the exterior of the device.
4 . The measurement device according to claim 1 , characterized in that, in the worn configuration, the measurement device extends angularly over at least 90°.
5 . The measurement device according to claim 1 , characterized in that the measurement device is flexible and configured to be able to be deformed, by winding, between an unworn configuration and the worn configuration.
6 . The measurement device according to claim 1 , characterized in that the at least one proximal temperature sensor is angularly offset with respect to the at least one cavity temperature sensor, in the worn configuration of the measurement device, by at least 90°.
7 . The measurement device according to claim 1 , characterized in that the measurement device also comprises at least one additional physicochemical data sensor.
8 . The measurement device according to claim 1 , characterized in that said first zone, in which the skin temperature sensors are arranged, is elongated and extends in a longitudinal direction of the measurement device, the skin temperature sensors being arranged in an aligned manner or staggered in said first zone.
9 . The measurement device according to claim 8 , characterized in that the at least one cavity temperature sensor is arranged facing said first zone of the skin temperature sensors in the longitudinal direction.
10 . The measurement device according to claim 1 , characterized in that the measurement device is in the form of the band elongated in a longitudinal direction (X) which, in the worn configuration, substantially corresponds to a peripheral line of the measurement device, the band having:
a length (L), in the longitudinal direction (X), greater than 12 cm;
a width, in a direction which is substantially parallel to the axis (Z) of the at least one cylindrical portion in the worn configuration, of less than 6 cm;
and the band having a longitudinal central axis, a transverse central axis, an upper edge and a lower edge.
11 . The measurement device according to claim 10 , characterized in that the skin temperature sensors and/or the at least one cavity temperature sensor are arranged substantially along the longitudinal central axis of the band.
12 . The measurement device according to claim 10 , characterized in that the skin temperature sensors and/or the at least one cavity temperature sensor are offset in a direction of the upper edge with respect to the longitudinal central axis of the band.
13 . The measurement device according to claim 10 , characterized in that the measurement device comprises:
an elongated tape bearing the skin temperature sensors and the at least one cavity temperature sensor;
a case containing an electronic board and a battery connected to the elongated tape, the case bearing at least one proximal temperature sensor and/or bearing at least one additional physicochemical data sensor;
the case and the elongated tape are covered in a flexible material.
14 . The measurement device according to claim 1 , characterized in that the measurement device comprises:
a first set of sensors containing:
the at least three skin temperature sensors, which are positioned on or near the second face of the measurement device, in a first zone of the first set of sensors, and which extend over a first length;
the at least one cavity temperature sensor, which is arranged on or near the second face of the measurement device, in a second zone of the first set of sensors of the measurement device which is at least partly facing the first zone of the first set of sensors, or substantially adjacent to the first zone of the first set of sensors, projecting in a plane orthogonal to said first and second faces;
a second set of sensors containing:
at least three additional skin temperature sensors, which are positioned on or near the second face of the measurement device, in a first zone of the second set of sensors, and which extend over a second length different from the first length;
at least one additional cavity temperature sensor, which is arranged on or near the first face of the measurement device, in a second zone of the second set of sensors of the measurement device which is at least partly facing the first zone of the second set of sensors, or substantially adjacent to the first zone of the second set of sensors, projecting in a plane orthogonal to said first and second faces
the device being arranged to use or activate a single set of sensors at once from the first set of sensors and the second set of sensors.
15 . The measurement device according to claim 14 , characterized in that:
the number of the at least one cavity temperature sensor of the first set of sensors is less than the number of skin temperature sensors of the first set of sensors, and
the number of the at least one cavity temperature sensor of the second set of sensors is less than the number of skin temperature sensors of the second set of sensors.
16 . An assembly containing the measurement device according to claim 1 , comprising, moreover, a flexible sheath, intended to receive the measurement device, the sheath having a window facing each of the skin temperature or cavity temperature sensors of the measurement device, the flexible sheath having, on its face intended to be in contact with the arm of the human being, at least one adhesive portion intended to be stuck on the arm of the human being.
17 . The assembly according to claim 16 , characterized in that the adhesive portion comprises an adhesive layer covered by at least one band that can be peeled off before a first use.
18 . A system for determining a core internal temperature of a human being, characterized in that the system comprises:
the device for measuring the plurality of temperatures according to claim 1 ;
a processing unit configured and/or programmed to determine the core internal temperature of the human being of the measurement device, based on temperature data measured by said measurement device.
19 . A method for determining a core internal temperature of a human being, implemented by means of the system according to claim 18 , the method comprising the following steps:
a) measuring at least one skin temperature at a time t or over a period of time p, by the at least three skin temperature sensors of the determination system;
b) measuring at least one cavity temperature at the time t or over the period of time p, by the at least one cavity temperature sensor of the measurement device of the measurement and determination system;
c) the measurement device sends the temperature data measured in steps a), b), through a transmitter, to a receiver equipping the processing unit of the measurement and determination system according to the invention;
d) the receiver of the processing unit receives the temperature data and transmits the temperature data to a memory of the processing unit, which stores the temperature data;
the processing unit compares the temperature data for each skin temperature and cavity temperature sensor and determines the skin temperature of the human being for each sensor for the time t or the period p;
the processing unit compares, for the at least one cavity temperature sensor, and determines, for each skin temperature and cavity temperature sensor, the cavity temperature for the time t or the period p; and
e) based on the item of the temperature data retained for each skin temperature sensor and for each cavity temperature sensor, for the time t or over at least one of the period p, the processing unit determines the core internal temperature of the human being, using the temperature data for each skin temperature and cavity temperature sensor for the time t or the period p, or a set of data corresponding to the temperature data for each skin temperature and cavity temperature sensor collected during a rolling observation period P.
20 . The method according to claim 19 , also comprising the following steps:
after step a), a step a′) of determining a single skin temperature value;
after step b), a step b′) of determining a single cavity temperature value; and
based on the single skin temperature value determined in step a′ and the single cavity temperature value determined in step b′, the processing unit determines the core internal temperature of the human being.
21 . The method according to claim 20 , also comprising the following steps:
a step FFF of measuring at least one proximal temperature at the time t or over the period of time p, by the at least one proximal temperature sensor;
a step FFF′ of determining a single proximal temperature value; and
based on the single skin temperature value determined in step a′, the single cavity temperature value determined in step b′ and the single proximal temperature value determined in step FFF′, the processing unit determines the core internal temperature of the human being.