Detection method, apparatus and system for sampling circuit precision of thermometer board card

A sampling circuit and detection device technology, which is applied in thermometer testing/calibration, thermometers, measuring devices, etc., can solve the problems of dismantling damage, unusability, and high maintenance costs of the whole machine, so as to avoid dismantling Effects of Repair, Cost Reduction, Cost Reduction, and Verification Complexity

Inactive Publication Date: 2016-12-21
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Abstract
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Problems solved by technology

[0005] 2: Repair and check the complete machine with poor precision, the operation is too complicated
[0006] 3: The maintenance cost of the whole machine is too high. If the reason for poor accuracy and accuracy of the thermometer is the bad sampling circuit of the

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  • Detection method, apparatus and system for sampling circuit precision of thermometer board card
  • Detection method, apparatus and system for sampling circuit precision of thermometer board card
  • Detection method, apparatus and system for sampling circuit precision of thermometer board card

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] figure 1 It is a schematic flow chart of the detection method of the accuracy of the thermometer board sampling circuit of an embodiment; as figure 1 As shown, the detection method of the accuracy of the thermometer board sampling circuit in this embodiment includes steps:

[0027] S11, controlling the detection device connected to the thermometer board to be detected, which can select the resistance value, to switch to different resistance values ​​successively, so that the NTC temperature sensing interface of the sampling circuit in the thermometer board is successively connected to resis...

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Abstract

The invention relates to a detection method, device and system for the accuracy of a thermometer board sampling circuit. The method includes: controlling the detection device connected to the thermometer board to be detected and having a selectable resistance value to switch successively to different resistance values, so that the NTC temperature sensing interface of the sampling circuit in the thermometer board is successively connected to different resistance values. Obtain the measured value of each resistance of the thermometer board; determine whether the accuracy of the sampling circuit in the thermometer board meets the preset measurement requirements according to the measured value and the corresponding actual resistance value. The solution of the invention can verify the accuracy of the sampling circuit of the board during the programming of the board, avoids dismantling and maintenance, and is beneficial to reduce the cost.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a detection method, device and system for the accuracy of a sampling circuit of a thermometer board. Background technique [0002] Before the electronic thermometer leaves the factory, it is necessary to test and verify the measurement accuracy and accuracy of the thermometer. Most electronic thermometers on the market use NTC temperature sensors as temperature measuring elements (under a certain measurement power, the resistance value of the NTC thermistor decreases rapidly as the temperature rises; using this feature, the NTC thermistor can be measured by measuring its resistance value To determine the corresponding temperature, so as to achieve the purpose of detecting and controlling temperature). The sampling circuit using NTC temperature sensor, MCU, battery and other board circuits and plastic structural parts are combined into a complete electronic thermomete...

Claims

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Application Information

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IPC IPC(8): G01K15/00G01R27/02
CPCG01K15/00G01R27/02
Inventor 蒲周平杨莲科梁军
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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