Wearable body temperature sensor, manufacturing method thereof and measuring method thereof

Abstract

The invention relates to a wearable body temperature sensor, a manufacturing method thereof and a measuring method thereof. By the novel wearable body temperature sensor, influences of outside environment temperature on measuring accuracy can be avoided and measuring accuracy can be effectively improved. The wearable body temperature sensor comprises an upper PDMS (polydimethylsiloxane) base layer and a lower PDMS base layer arranged below the upper PDMS base layer, environment temperature sensors are packaged in the upper PDMS base layer, leads of the environment temperature sensors extend out of the outer portion the upper PDMS base layer, skin temperature sensors are packaged in the lower PDMS base layer, and leads of the skin temperature sensors extend out from the lower PDMS base layer to the outer portion of the upper PDMS base layer.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a wearable body temperature sensor, a manufacturing method and a measuring method thereof. Background technique [0002] With the development of wireless sensing technology, it is an important trend in the development of medical technology to monitor various physiological indicators of the human body and cooperate with wireless networks for data transmission. Among them, the temperature sensor for human body temperature detection is an important part of this wearable sensor. However, at present, the measurement of temperature sensors is mainly concentrated in the armpit, anus or brain. Placing sensors in these parts will greatly reduce the wearer's comfort and affect the wearer's activities, thus limiting the use of wearable sensors. How to find a comfortable and high-precision body temperature measurement method is an important problem that wearable sensors ...

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Problems solved by technology

[0004] Van Marken et al. (W.V.M. Lichtenbelt, H. Daanen, L. Wouters, R. Fronczek, R. Raymann, N. Severens, and E.V. Someren, "Evaluation of Wireless Determination of Skin Temperature using iButtons," Physiology and Behavior, no. 88, pp.489–497, Apr.2006.) reported the use of mexim's iButtons products for skin temperature measurement; J.Sarabia et al. also use the same technology (J.Sarabia, M.Rol, P.Mendiola, and J.Madrid, "Circadian Rhythm of Wrist Temperature in Normal-living Subjects: a Candidate of New Index of the Circadian System," Physiology and Behavior, vol. 2008, no. 95, pp. 570–580, Aug. 2008) Making Wrist Temperature Measurements Sensors; these technologies use mexim’s DS1921 single-wire sensor. Although the measurement accuracy is high and the integration is simple, the iButtons product size is still slightly large, and its data is mainly stored on the on-chip memory, which lacks real-time performance; Boano et al. ( C. A. Boano, M. Lasagni, K. and T.Lange.Accurate Temperature Measurements for Medical Research using Body Sensor Networks.In Proc.of the2nd SORT Workshop,March 2011) directly use NTC thermistor for measurement, and build a peripheral power supply circuit and wireless module, compared with the aforementioned system , the real-time performance has been improved, but the above-mentioned several systems, although the accuracy of the system measurement temperature is very high, but the biggest problem is that the influence of the external environment temperature on the skin temperature measurement cannot be eliminated. As Boano’s article introduces, when the wearer goes outdoors , the change in temperature is detected immediately

Compared with foreign research, there are also relevant domestic institutions researching wearable flexible temperature sensors, such as Che Lufeng from the Institute of Microsystems, Chinese Academy of Sciences, etc. (a method for making a flexible temperature sensor, patent number: 200710042881. methylsiloxane) as a sacrificial layer to make a temperature sensor on a polyimide substrate, but this design only solves the problem of flexible substrates, and does not really solve the problems of measurement accuracy and environmental noise

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