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Temperature acquisition circuit based on single chip microcomputer

A technology of collecting circuits and single-chip microcomputers, applied in thermometers, thermometer components, computer control and other directions, can solve the problems of low reliability, complex circuits, high power consumption, etc., to reduce the cost of raw materials, simple circuit design, and reduce the overall The effect of power consumption

Inactive Publication Date: 2020-02-04
ZHEJIANG WEIXING INTELLIGENT METER STOCK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of large power consumption, complex circuit and low reliability in current mainstream solutions, the present invention provides a single-chip microcomputer-based temperature acquisition circuit

Method used

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  • Temperature acquisition circuit based on single chip microcomputer
  • Temperature acquisition circuit based on single chip microcomputer
  • Temperature acquisition circuit based on single chip microcomputer

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Embodiment Construction

[0014] In order to describe the technical content, structural features, and achieved effects of the present invention in detail, the following describes in detail in conjunction with the embodiments and accompanying drawings.

[0015] Such as figure 1 As shown, a temperature acquisition circuit based on a single-chip microcomputer includes a single-chip microcomputer U2, a crystal oscillator X1, an anti-reverse connection diode D1, a voltage regulator U1, a first resistor R1, a second resistor R2, a first filter capacitor C1, and a second filter capacitor C2, the third filter capacitor C3, the fourth filter capacitor C4, the fifth filter capacitor C5, the sixth filter capacitor C6, the seventh filter capacitor C7, the temperature sensor interface P2 and the power supply P1.

[0016] The positive pole of the anti-reverse diode D1 is connected to the positive pole (pin 1) of the power supply P1, and the second pin of the power supply P1 is grounded; the negative pole of the anti...

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Abstract

The invention discloses a temperature acquisition circuit based on a single chip microcomputer. A power supply of the invention provides a 6V power supply, and a voltage stabilizer chip outputs VCC (3.3V). After the single chip microcomputer starts to work, a first control pin of a single chip microcomputer U2 is set to output high level and keeps for 108 milliseconds, and meanwhile, a second pinof the single chip microcomputer U2 detects a pulse signal sent by a temperature sensor and calculates a temperature value by metering the pulse number. The circuit of the invention is simple in design, the area of the PCB is saved, and the miniaturization of equipment is convenient, and the cost of raw materials is reduced; the detection time is short, and the ambient temperature can be detectedwithin 108 milliseconds at most; the sampling time is extremely short, so that the overall power consumption of the equipment is reduced, and the service time of the instrument of the disposable powersupply can be prolonged by 30%; the detection does not need to increase an additional standby power supply and has high detection accuracy.

Description

technical field [0001] The invention belongs to the technical field of instrument intelligent control, and relates to a temperature acquisition circuit based on a single-chip microcomputer. Background technique [0002] With the parallel development of microprocessor and artificial intelligence technology, this has created opportunities for the instrumentation industry to develop intelligently. The improvement of intelligence level will make people's life easier. [0003] The working environment of instrument electronic products is usually harsh, and the main control board of the instrument is usually required to detect changes in the external environment in time, such as temperature and pressure, so that the instrument can adjust its measurement accuracy according to the environment. [0004] At present, the country does not have a unified standard for the instrument industry. Gas companies and instrument companies in various regions do not have a unified solution, and var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042G01K1/02
CPCG05B19/0423G01K1/02G05B2219/24215
Inventor 赵涛
Owner ZHEJIANG WEIXING INTELLIGENT METER STOCK
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