CN203400136U

CN203400136U - Wearable body temperature sensor

Info

Publication number: CN203400136U
Application number: CN201320378217.7U
Authority: CN
Inventors: 丁福如; 毛思强; 陈翔
Original assignee: NEW DEVELOPMENT GROUP Co Ltd
Current assignee: NEW DEVELOPMENT GROUP Co Ltd
Priority date: 2013-06-28
Filing date: 2013-06-28
Publication date: 2014-01-22
Anticipated expiration: 2023-06-28

Abstract

The utility model relates to a wearable body temperature sensor. The objective is to provide the novel wearable body temperature sensor which can avoid the influence of the temperature of the outer environment on the measuring accuracy and can effectively improve the measuring accuracy. The wearable body temperature sensor comprises an upper PDMS (polydimethylsiloxane) base and a lower PDMS base. An environment temperature sensor is packaged in the upper PDMS base, and a lead of the environment temperature sensor stretches out of the upper PDMS base. The lower PDMS base is arranged below the upper PDMS base. A skin temperature sensor is packaged in the lower PDMS base. A lead of the skin temperature sensor stretches out of the upper PDMS base from the lower PDMS base.

Description

A kind of Wearable body temperature trans

Technical field

This utility model belongs to technical field of medical instruments, specifically, relates to a kind of Wearable body temperature trans.

Background technology

Along with the development of wireless sensor technology, the every physical signs of human body is monitored and coordinated wireless network to carry out the important trend that transfer of data is medical skill development.The temperature sensor wherein detecting for human temperature is the pith of this Wearable sensor.Yet the measurement of temperature sensor at present mainly concentrates on oxter, anus or brain, sensor is placed at these positions can reduce wearer's comfort level greatly, affects wearer's activity, thereby has limited the use of Wearable sensor.How finding a kind of comfortable, high-precision measurement of bldy temperature mode is the major issue that current Wearable sensor need to solve.

Sensor is placed on skin, and the Wearable measurement of bldy temperature sensor that is made into wrist formula or other modes is the research direction of novel body temperature trans.This novel sensor mainly meets following requirement: 1) main body is flexible material, to increase contacting and laminating degree of sensor and skin, the precision of raising comfort and measurement; 2) high-precision measurement; 3) error of avoiding environment and circadian rhythm to bring.

(the W.V.M.Lichtenbelt such as Van Marken, 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.) report is used the iButtons product of mexim company to carry out measured skin temperature, J.Sarabia etc. are also used identical 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) makes wrist formula measurement of bldy temperature sensor, these technology are all to use the DS1921 single-line type sensor of mexim company, although certainty of measurement is high, integrated simple, it is larger that iButtons product size still shows slightly, and its data are to be mainly stored on on-chip memory, lack real-time, (C.A.Boano, M.Lasagni, the K. such as Boano

and T.Lange.Accurate Temperature Measurements for Medical Research using Body Sensor Networks.In Proc.of the2nd SORT Workshop, March2011) directly use NTC critesistor to measure, and peripheral power supply circuits and wireless module have been built, compare aforementioned system, real-time is improved, but above-mentioned several systems, although the precision of systematic survey temperature is very high, but greatest problem is to eliminate the impact of ambient temperature on skin measurement temperature, as the article introduction of Boano, when wearer goes to open air, the variation of temperature just detected at once.Than external research, domestic also have associated mechanisms to study Worn type flexibility temperature sensor, as above extra large Chinese Academy of Sciences micro-system (a kind of manufacture methods of flexibility temperature sensor such as Che Lufeng, the patent No.: 200710042881.3) introduce and use PDMS(polydimethylsiloxane) as sacrifice layer, make the temperature sensor of polyimide substrate, yet this design has only solved the problem of flexible substrate, the inreal problem that solves certainty of measurement and environmental noise.

Utility model content

The purpose of this utility model is to overcome weak point of the prior art, and a kind of novel Wearable body temperature trans is provided, and can avoid the impact of ambient temperature on certainty of measurement, effectively improves the degree of accuracy of measuring.

The purpose of this utility model is achieved in that

A body temperature trans, comprising: upper PDMS(polydimethylsiloxane) basic unit, in it, be packaged with environment temperature sensor, and it is outside that the lead-in wire of described environment temperature sensor stretches out PDMS basic unit; Lower PDMS basic unit, is located at PDMS basic unit below, is packaged with skin temperature transducer in it, extend out to PDMS basic unit outside in the lead-in wire Cong Xia PDMS basic unit of described skin temperature transducer.

Wherein, the thickness of described upper PDMS basic unit is concordant with the upper surface of described environment temperature sensor; The thickness of described lower PDMS basic unit is no more than 1cm for the upper surface higher than described skin temperature transducer; Described skin temperature transducer is thermocouple, platinum resistance, critesistor or the thermal resistance prepared by micro-processing method; Described environment temperature sensor is thermocouple, platinum resistance, critesistor or the thermal resistance prepared by micro-processing method.

This utility model, owing to having adopted technique scheme, compared with prior art has following beneficial effect: this utility model Wearable body temperature trans is used polymeric material PDMS(polydimethylsiloxane) as encapsulating material, temperature sensor is encapsulated.The features such as PDMS is the conventional encapsulation of current micro-processing and makes material have the processing of being relatively easy to, and human compatibility is good, and its thermal capacitance that compares is large, heat radiation is slow, can for the temperature sensor of encapsulation, manufacture the thermal environment of a relative closure, can measure more accurately skin temperature, PDMS material also has breathability and good pliability, and the sensor of making can well be fitted with skin, be conducive to increase wearer comfort and and the accuracy of thermometric, this utility model is used double temperature sensor to be encapsulated in PDMS, a sensor is to press close to skin, another sensor is contact external environment, PDMS material between the two, because the thickness of PDMS material can strictly be controlled in the course of processing, its material properties is also known, therefore by analog simulation, calculate and actual measurement can obtain at varying environment temperature ambient temperature to being encapsulated into the impact of measuring the sensor of skin temperature in PDMS, during each measurement, by two sensors, measure ambient temperature and skin temperature simultaneously, after being compensated, can obtain real skin measurement temperature.

Accompanying drawing explanation

By following embodiment of the present utility model description taken together with the accompanying drawings, other advantage of the present utility model and feature are shown, this embodiment provides with the form of example, but is not limited to this, wherein:

Fig. 1 is the structural representation of this utility model Wearable body temperature trans;

Fig. 2 is the schematic diagram of state one in the manufacture process of this utility model Wearable body temperature trans;

Fig. 3 is the schematic diagram of the manufacture process state two of this utility model Wearable body temperature trans;

Fig. 4 is the schematic diagram of the manufacture process state three of this utility model Wearable body temperature trans;

Fig. 5 is the schematic diagram of the manufacture process state four of this utility model Wearable body temperature trans.

The specific embodiment

As shown in Figure 1, a kind of Wearable body temperature trans, comprising: upper PDMS(polydimethylsiloxane) basic unit 1, in it, be packaged with environment temperature sensor 2, and the lead-in wire 3 of environment temperature sensor 2 stretches out the outside of PDMS basic unit 1; Lower PDMS basic unit 4, is located at the below of PDMS basic unit 1, is packaged with skin temperature transducer 5 in it, in the lead-in wire 6 Cong Xia PDMS basic units 4 of skin temperature transducer 5, extend out to PDMS basic unit 1 outside.

Wherein the thickness of ，Shang PDMS basic unit 1 is concordant with the upper surface of environment temperature sensor 2; The thickness of lower PDMS basic unit 4 is no more than 1cm for the upper surface higher than skin temperature transducer 5; Environment temperature sensor 2 and skin temperature transducer 5 can be respectively thermocouple, platinum resistance, critesistor or the thermal resistance of preparing by micro-processing method.

The manufacture method of a kind of Wearable body temperature trans of this utility model as shown in Figure 2-5, comprises the following steps:

(1) prepare a smooth substrate 7, skin temperature transducer 5 is placed on substrate 7;

(2) prepare PDMS(polydimethylsiloxane), by PDMS performed polymer and firming agent, it according to mass ratio, is the ratio mixing of 5: 1～20: 1, fully stir also evacuation and process to remove bubble, in the present embodiment, that adopt is the PDMS of the product sygard184 by name of Dow Corning Corporation, it is sold product and comprises performed polymer and firming agent, also can adopt the PDMS of the GE company product RTV615 trade mark by name, and it is sold product and comprises performed polymer and firming agent;

(3) PDMS is slowly poured on the substrate 7 that is placed with skin temperature transducer 5 in step (1), with tweezers, the lead-in wire of skin temperature transducer 56 is pulled out, make lower PDMS basic unit 4;

(4) be placed in baking oven and solidify PDMS, environment temperature sensor 2 is placed on to the upper surface of step (3) resulting materials after it solidifies;

(5) PDMS is slowly poured in step (4) and is placed with on the material of environment temperature sensor 2, with tweezers, the lead-in wire of environment temperature sensor 23 is pulled out, make PDMS basic unit 1;

(6) be placed on curing PDMS in baking oven;

(7) remove substrate 7, obtain this utility model Wearable body temperature trans.

Wherein, the skin temperature transducer in described step (1) 5 is thermocouple, platinum resistance, critesistor or the thermal resistance prepared by micro-processing method; Environment temperature sensor in described step (3) 2 is thermocouple, platinum resistance, critesistor or the thermal resistance prepared by micro-processing method; Substrate 7 is silicon chip or sheet glass.

Preferably, the thickness of PDMS is no more than 1cm for the upper surface higher than described skin temperature sensing 2 devices in described step (3); In described step (5), the thickness of PDMS is concordant with the upper surface of described environment temperature sensor 2.

Claims

1. a Wearable body temperature trans, is characterized in that, comprising:

Upper PDMS(polydimethylsiloxane) basic unit, is packaged with environment temperature sensor in it, and it is outside that the lead-in wire of described environment temperature sensor stretches out PDMS basic unit;

Lower PDMS basic unit, is located at PDMS basic unit below, is packaged with skin temperature transducer in it, extend out to PDMS basic unit outside in the lead-in wire Cong Xia PDMS basic unit of described skin temperature transducer.

2. Wearable body temperature trans as claimed in claim 1, is characterized in that: the thickness of described upper PDMS basic unit is concordant with the upper surface of described environment temperature sensor.

3. Wearable body temperature trans as claimed in claim 1, is characterized in that: the thickness of described lower PDMS basic unit is no more than 1cm for the upper surface higher than described skin temperature transducer.

4. Wearable body temperature trans as claimed in claim 1, is characterized in that: described skin temperature transducer is thermocouple, platinum resistance, critesistor or the thermal resistance prepared by micro-processing method; Described environment temperature sensor is thermocouple, platinum resistance, critesistor or the thermal resistance prepared by micro-processing method.