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Single chip microcomputer power circuit on basis of infrared thermometers

An infrared thermometer and power circuit technology, applied in battery circuit devices, circuit devices, emergency power supply arrangements, etc., can solve problems such as inconvenience in use, and achieve the effects of extending standby time, preventing surges, and filtering out low-frequency noise.

Inactive Publication Date: 2018-03-06
成都元始信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: the present invention provides a single-chip microcomputer power supply circuit based on an infrared thermometer, which solves the problem that the power supply of the existing thermometer is only powered by a general battery, and frequent replacement causes inconvenient use

Method used

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  • Single chip microcomputer power circuit on basis of infrared thermometers
  • Single chip microcomputer power circuit on basis of infrared thermometers

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Embodiment 1

[0019] A single-chip microcomputer power supply circuit based on an infrared thermometer, including a battery circuit, a charging circuit and a single-chip microcomputer; the battery circuit and the charging circuit are electrically connected to the single-chip microcomputer; the charging circuit is connected as follows: the single-chip microcomputer pin Va is connected to the resistor RV1 after the diode D1, and the diode D1 is connected Zener tube D3 is connected to the base of triode Q1 via resistor R1. Zener tube D3 is also connected to the emitter of triode Q1. Zener tube D3 is also connected to Zener tube D4 and then connected to resistor RV1. The other end of resistor RV1 is grounded. Transistor Q1 The collector of the triode Q1 is connected to the positive pole of the battery BT1 after connecting the diode D2, and the positive pole of the battery BT1 is connected to the pin Vb of the single-chip microcomputer. The negative electrode is connected to resistor R13, resisto...

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Abstract

The invention discloses a single chip microcomputer power circuit on the basis of infrared thermometers, and relates to the field of power circuits. The single chip microcomputer power circuit comprises a battery circuit, a charge circuit and a single chip microcomputer. The battery circuit and the charge circuit are electrically connected with the single chip microcomputer. The single chip microcomputer power circuit has the advantages that the single chip microcomputer power circuit is provided with a voltage division power source and the charge circuit, and accordingly the residual capacityof a battery can be displayed; the thermometers can be automatically switched to be powered by a rechargeable battery according to the residual capacity of the common battery, accordingly, the standby time of the thermometers can be prolonged, the problem of inconvenience due to the fact that power sources of existing clinical thermometers are only powered by common batteries and the common batteries need to be frequently changed can be solved, and effects of providing two powering modes and prolonging the standby time of the thermometers can be realized.

Description

technical field [0001] The invention relates to the field of infrared forehead thermometers, in particular to a single-chip microcomputer power supply circuit based on the infrared thermometer. Background technique [0002] A rechargeable battery is a rechargeable battery with a limited number of charges, which is used with a charger; the advantages of a rechargeable battery are economical, environmentally friendly, sufficient power, and suitable for high-power, long-term use of electrical appliances; among them, the lithium battery in the rechargeable battery is divided into Two stages, constant current fast charging stage, the battery voltage is gradually increased to the standard voltage of the battery, and then transferred to the constant voltage stage under the control of the chip, the voltage will not increase to ensure that it will not be overcharged, and the current increases with the battery power. The rise gradually weakens to the set value; because the lithium bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02J7/00
CPCY02B70/30Y04S20/20
Inventor 赵元兵范娟秀
Owner 成都元始信息科技有限公司
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