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Over-temperature protection circuit and field rapid inspection instrument

A technology for testing instruments and protecting circuits, which is applied in the direction of emergency protection circuit devices, instruments, circuit devices, etc., and can solve problems such as affecting test results, easily damaged instruments, and high temperature of heating elements

Active Publication Date: 2019-03-26
SHENZHEN GOLDSITE DIAGNOSTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to propose an over-temperature protection circuit and on-site rapid inspection instrument, aiming to solve the current POCT instrument (on-site rapid inspection instrument), due to one or more failures in the MCU, power converter or temperature sensor When the temperature is too high or too low, the temperature of the heating element in the instrument will be too high or too low, which will affect the test results and easily damage the instrument.

Method used

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  • Over-temperature protection circuit and field rapid inspection instrument

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0033]In addition, if there are descriptions involving "first", "second" and s...

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Abstract

The invention discloses an over-temperature protection circuit, which is applied to a field rapid inspection instrument. The over-temperature protection circuit comprises a temperature sensing module,a comparison circuit, a controllable switch, a temperature control loop and a heating element arranged in the temperature control loop. The output terminal of the temperature sensing module is connected to the comparison circuit; the output terminal of the comparison circuit is connected to a controlled terminal of the controllable switch; and the input terminal of the controllable switch is connected to a power supply and the output terminal of the controllable switch is connected to the temperature control loop. Therefore, a problem that the temperature of the heating element in the instrument is too high or too low when one or more of an MCU, a power converter and a temperature sensor in the POCT instrument fails to work and thus the test result is affected and the instrument is easy to damage is solved.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to an over-temperature protection circuit and an on-site rapid inspection instrument. Background technique [0002] POCT instrument (on-site rapid test instrument) is not limited by time and place because of its small size, simple operation, and timely report results. It can detect patients in time and obtain test results quickly. [0003] In the POCT instrument, the constant temperature control system is used to control the constant temperature of the reactants in the test card, so that the activity of the reagent can reach the optimal temperature, so as to realize the accurate analysis of the injected blood sample. The constant temperature control system of the existing POCT instrument usually consists of the following parts: 1. Single-sided or double-sided micro-heater, which contains a temperature sensor; 2. Power converter; 3. MCU control unit. These three parts fo...

Claims

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Application Information

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IPC IPC(8): H05B1/02G05D23/24H02H5/04
CPCG05D23/24H02H5/042H05B1/0202
Inventor 耿丙印陈明峰陈明东李锐
Owner SHENZHEN GOLDSITE DIAGNOSTICS
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