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Over-temperature protection circuit and on-site rapid inspection instrument

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

Active Publication Date: 2021-10-19
SHENZHEN GOLDSITE DIAGNOSTICS
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  • 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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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 on-site rapid inspection instruments. The over-temperature protection circuit includes a temperature sensing module, a comparison circuit, a controllable switch, a temperature control circuit and a heating element placed in the temperature control circuit. The output end of the temperature module is connected to the comparison circuit; the output end of the comparison circuit is connected to the controlled end of the controllable switch; the input end of the controllable switch is connected to the power supply, and the output end of the controllable switch is connected to the temperature control circuit. The invention solves the problem that in the POCT instrument, when one or more of the MCU, power converter or temperature sensor fails, the temperature of the heating element in the instrument is too high or too low, which affects the test result and easily damages the instrument.

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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Patent Type & Authority Patents(China)
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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