Digital temperature measurement instrument

A digital temperature and measuring instrument technology, applied in the field of measurement, can solve the problems of reducing the accuracy of temperature measurement, inconvenient measurement, easy reading and increasing human error, etc., to achieve the goal of improving competitiveness, fast testing and display, and reducing labor intensity Effect

Inactive Publication Date: 2014-12-03
蒙凯
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current temperature measurement mostly uses a thermometer, which requires manual reading of the value. This measurement method is not only inconvenient to measure, but also easily increases human error during the reading process and reduces the accuracy of temperature measurement.

Method used

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Embodiment

[0020] The digital temperature measuring instrument is composed of single-chip microcomputer as the core of control, combined with peripheral circuits;

[0021] Described single-chip microcomputer adopts ATmega16 single-chip microcomputer, and encapsulation mode is the PDIP of 40 pins; The minimum system of described ATMEGA16 single-chip microcomputer is provided with reset circuit and crystal oscillator circuit; The specific way of described reset circuit is to connect a pull-up resistor R0 to VCC outside, Use 10K for the pull-up resistor; add a 10uF capacitor to eliminate clutter and interference; use the button mode to reset; the crystal oscillator circuit uses an external oscillator circuit to provide the oscillation frequency for the microcontroller; the download method of the ATmega16 microcontroller adopts the ISP download method ; The minimum system of the ATmega16 adopts the stabilized power supply of the three-terminal voltage regulator chip, adopts the Lm7805 integra...

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Abstract

The invention discloses a digital temperature measurement instrument which is formed with a single-chip microcomputer being as the core and a peripheral circuit being combined. The single-chip microcomputer adopts an ATmega16 single-chip microcomputer; a minimum system of the single-chip microcomputer is provided with a reset circuit and a crystal oscillator circuit; the downloading mode of the ATmega16 single-chip microcomputer adopts an ISP downloading mode; and a power source adopts an Lm7805 integrated voltage stabilization chip. The peripheral circuit comprises a temperature sensor circuit, a digital display circuit and a buzzer circuit, wherein the temperature sensor circuit adopts a DS18B20 sensor and adopts an external power supply mode; the digital display circuit adopts four common-anode Nixie tubes and adopts dynamic display; and the buzzer circuit is formed by a buzzer, a triode and a base electrode pull-up resistor, and adopts a low level drive mode, wherein the triode is used as a switch. The temperature measurement instrument in the invention can test and display the temperature data accurately, conveniently and quickly; and temperature measurement instrument is simple circuit, and low in cost, and has market competitiveness.

Description

technical field [0001] The invention relates to measurement, in particular to a digital temperature measuring instrument. Background technique [0002] As an important parameter, temperature plays a very critical role in industrial control, daily life and other fields. With the development of single-chip microcomputer technology, intelligence and automation have become the mainstream of today's social development, and at the same time promote the development of society. In industrial control, for the collection of temperature, the traditional method of using thermometers not only has low accuracy and poor real-time performance, but also wastes labor. It is not only labor-intensive for operators, but also for some fields. will pose a threat. Moreover, one of the biggest shortcomings of traditional temperature measurement is that it is not intuitive, and it is very inconvenient to obtain temperature information in daily life. With the development of microprocessor techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K7/00
Inventor 蒙凯罗毅
Owner 蒙凯
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