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Real-time body temperature monitoring circuit of embedded system

An embedded system and monitoring circuit technology, which is applied in the direction of thermometers, thermometers, and measuring devices that use electrical/magnetic components directly sensitive to heat. and other problems, to achieve the effect of reducing temperature measurement accuracy, low power consumption, and constant AD input voltage

Inactive Publication Date: 2019-01-04
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, since most smart thermometers are powered by button batteries, long-term use of the battery will lead to a decrease in power consumption, which will have a greater impact on the temperature measurement of the thermistor, resulting in a decrease in temperature measurement accuracy

Method used

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  • Real-time body temperature monitoring circuit of embedded system
  • Real-time body temperature monitoring circuit of embedded system
  • Real-time body temperature monitoring circuit of embedded system

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing.

[0014] Such as figure 1 As shown, a real-time body temperature monitoring circuit of an embedded system includes the minimum system circuit part of the Cortex-M0 core nRF51822, and the temperature measurement circuit part of the MF54-503F3950F medical high-precision thermistor. ·

[0015] Cortex-M0 core nRF51822 minimum system circuit includes low-power Bluetooth SoC chip nRF51822, first resistor R1, second resistor R2, third resistor R3, first capacitor C1, second capacitor C2, third capacitor C3, fourth capacitor C4, fifth capacitor C5, sixth capacitor C6, seventh capacitor C7, eighth capacitor C8, ninth capacitor C9, tenth capacitor C10, eleventh capacitor C11, twelfth capacitor C12, thirteenth capacitor C13, Fourteenth capacitor C14, fifteenth capacitor C15, sixteenth capacitor C16, seventeenth capacitor C17, eighteenth capacitor C18, nineteenth capacitor C19, first i...

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Abstract

The invention discloses a real-time body temperature monitoring circuit of an embedded system. The real-time body temperature monitoring circuit comprises a Cortex-M0 core nRF51822 minimum system circuit and an MF54-503F3950F medical high-precision thermistor temperature measuring circuit. Therefore, the application requirement of the real-time body temperature monitoring circuit can be met; the standard of Bluetooth 4.0 is met; the power consumption is low; and the endurance time is prolonged. With the MF54-503F3950F medical high-precision thermistor, the precision reaches + / -0.01 degrees; and with erection of an SGM2032-ADJ voltage regulator circuit, the constant AD input voltage is ensured. A problem of temperature measurement accuracy reduction caused by the voltage reduction for long-time usage of a button cell is solved. Meanwhile, a few of circuit devices are used, so that the smart thermometer module is developed to be small and exquisite.

Description

technical field [0001] The invention belongs to the technical field of embedded systems, and in particular relates to a real-time body temperature monitoring circuit of an embedded system. Background technique [0002] Body temperature measurement has undergone a major evolution from the traditional mercury thermometer manual measurement to the more advanced electronic thermometer measurement and the real-time measurement of the smart thermometer. Traditional mercury thermometers and electronic thermometers can only achieve a single measurement. All-weather real-time monitoring is the key to the birth of smart thermometers, while power consumption, accuracy and volume are important factors restricting the development of smart thermometers. [0003] The commonly used CC2540 on the market is a low-power Bluetooth single-mode chip based on the 8051 core. Although it supports OTA better, the 8051 core cannot achieve particularly low power consumption. In addition, the transmiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/24
CPCG01K7/24
Inventor 孙纯岭高发荣杨波
Owner HANGZHOU DIANZI UNIV
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