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Body scale and circuit capable of improving weighing repeatability and method thereof

A body scale and repeatability technology, applied in the field of body scales, can solve the problems of poor repeatability, unable to provide weighing repeatability body scales, etc., and achieve the effect of improving weighing repeatability

Pending Publication Date: 2019-02-22
CHIPSEA TECH SHENZHEN CO LTD
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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 to provide a human body scale, circuit and method that can improve the repeatability of weighing, aiming at solving the problem of poor repeatability when weighing in the prior art, and it is impossible to provide an effective weighing repeatability. sexual body scale

Method used

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  • Body scale and circuit capable of improving weighing repeatability and method thereof
  • Body scale and circuit capable of improving weighing repeatability and method thereof
  • Body scale and circuit capable of improving weighing repeatability and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] figure 1 The structure of the human body scale provided by Embodiment 1 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:

[0034] The human body scale provided by the embodiment of the present invention includes a body 1 and a load-bearing plate (not shown in the figure), a weighing measuring device 2 arranged on the body 1, and the weighing measuring device 2 includes a plurality of load cells arranged on the body 1 ;

[0035] Such as figure 2 As shown, a plurality of load cells include a first load cell S1 disposed at the northeast corner of the body 1, a second load cell S2 disposed at the northwest corner of the body 1, and a third load cell disposed at the southwest corner of the body 1 S3 and the fourth load cell S4 arranged at the southeast corner of the body 1, to measure the weight borne by different positions on the bearing plat...

Embodiment 2

[0040] image 3 It is the circuit for improving the weighing repeatability of the human body scale provided by the second embodiment of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:

[0041] It includes a plurality of load cells, an analog-to-digital conversion chip U1, and a reference circuit 4. The multiple load cells include a first load cell S1 disposed at the northeast corner of the body 1, and a second load cell S2 disposed at the northwest corner of the body 1. , the third load cell S3 arranged in the southwest corner of the body 1 and the fourth load cell S4 arranged in the southeast corner of the body 1, to measure the weight borne by the four corners of the scale;

[0042] Both the first ends of the first load cell S1 and the second load cell S2 are connected to the positive pole of the power supply, the second end of the first load cell S1 is con...

Embodiment 3

[0046] Figure 4 It is the implementation process of the method for improving weighing repeatability provided by Embodiment 3 of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown, including:

[0047] In step S401, the first load cell, the second load cell, the third load cell, the fourth load cell and the reference circuit are connected in pairs to form a plurality of differential pairs.

[0048] In the embodiment of the present invention, the measurement signals output by the first load cell and the third load cell are set as the first differential pair, and the measurement signals output by the third load cell and the second load cell are set as For the second differential pair, set the measurement signals output by the second load cell and the fourth load cell as the third differential pair, and set the measurement signal output by the fourth load cell and the reference output by the refere...

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Abstract

The invention is applicable to the technical field of body scales and provides a body scale and circuit capable of improving weighing repeatability and a method thereof. The body scale comprises a body and a bearing plate. The body is provided with a weighing and measuring device, the weighing and measuring device comprises a plurality of weighing sensors set on the body and multiple analog-to-digital conversion chips connected to the weighing sensors. The bearing plate is located above weighing ends of the plurality of weighing sensors. The weighing and measuring device is connected to a microprocessor which is arranged on the body and is used for calculating a total weight of a human body by using differential AD values of the multiple weight sensors in different states according to thedifferential AD values of the multiple weighing sensors in different states outputted by the analog-to-digital conversion chips, therefore, the weighing repeatability of the body scale is improved, and the simplified and convenient body scale is provided for a user.

Description

technical field [0001] The invention belongs to the technical field of human scales, and in particular relates to a human scale capable of improving weighing repeatability, a circuit and a method. Background technique [0002] In the application field of traditional household human body scales, one of the pain points in the application process of human body scales is that the repeatability of weighing is poor. A large difference will seriously affect the user's weighing experience; the reason for this phenomenon is that in the design of the scale body, the sensor measuring end theoretically requires the linearity of the four half-bridge sensors to be completely consistent in order to accurately reflect the actual weight; But in reality, due to differences in key materials such as elastic bodies and resistance strain gauges of electronic load cells, as well as errors in manufacturing and installation, the absolute sensitivity of each sensor will be different, resulting in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G19/44
CPCG01G19/44
Inventor 马帅李晓
Owner CHIPSEA TECH SHENZHEN CO LTD