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Four-footed scale, and pressure sensing circuit and weighing method thereof

A technology of induction circuit and four-legged scales, which is applied in the field of four-legged scales, can solve the problem of high consistency requirements of four-legged scales, achieve the effect of reducing consistency requirements, lowering requirements, and saving eccentric load detection stations

Pending Publication Date: 2018-12-25
SHENZHEN UNIQUE SCALES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Another object of the present invention is to provide a four-legged scale to solve the technical problem that the existing four-legged scale has high requirements for the consistency of the output characteristics of the strain gauge

Method used

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  • Four-footed scale, and pressure sensing circuit and weighing method thereof
  • Four-footed scale, and pressure sensing circuit and weighing method thereof
  • Four-footed scale, and pressure sensing circuit and weighing method thereof

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] For the convenience of description, the four half-bridge strain gauges are referred to as the first half-bridge strain gauge, the second half-bridge strain gauge, the third half-bridge strain gauge and the fourth half-bridge strain gauge in the following. The four output terminals are respectively called the first output terminal, the second output terminal, the third output terminal and the fourth output terminal. It should be pointed out that the first, second, third, and fourth in this application document do not indicate the order or priority.

[0025] Please refer to figure 1 , Figure 4 , the pressure sensing circuit of the preferred embodiment four-leg scale comprises: the first half-bridge strain gauge 21, the second half-bridge strain gauge 22, the third half-bridge strain gauge 23 and the fourth half-bridge strain gauge 24, It also i...

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Abstract

The invention relates to the field of electronic apparatus testing, and provides an electronic apparatus testing device and an electronic apparatus to solve the problem of how to simplify the installation and removal process when testing an electronic apparatus. The electronic apparatus testing device comprises a base plate, a fixing device and at least one first sliding fixing device, wherein thefirst sliding fixing device and the fixing device are matched to form a clamping structure, so that the objects that the electronic apparatus can be rapidly removed when testing and the testing device can be recycled are achieved, and the installation and removal process in the testing is simplified. In addition, the electronic apparatus testing is started by connecting the PINs of the to-be-detected electronic apparatus to the row pins and inserting to the row rings in the testing, so that wiring is convenient, the testing flow is simplified, and the testing device is suitable for modularized electronic apparatus.

Description

technical field [0001] The invention relates to a four-legged scale, in particular to a pressure sensing circuit of the four-legged scale, a four-legged scale using the pressure sensing circuit, and a weighing method. Background technique [0002] The current four-leg scales of production, including human body scales, kitchen scales, baby scales, etc., use four half-bridge strain gauges 21-24 to be installed on four corners of the electronic scale 1 (such as figure 1 shown). Such as figure 2 As shown, the equivalent circuit of the half-bridge strain gauge is a circuit composed of resistors R1 and R2 with equal resistance in series, and the half-bridge strain gauge has two ends and a midpoint. Such as image 3 As shown, the pressure sensing circuit of the current four-leg scale is to connect four half-bridge strain gauges 21-24 in series and connect them end to end, and use the midpoint of the two half-bridge strain gauges as the input terminal to connect the DC power sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G3/14G01G3/142G01G3/18
CPCG01G3/1414G01G3/1418G01G3/142G01G3/18
Inventor 于化云
Owner SHENZHEN UNIQUE SCALES CO LTD
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